CN109599631A - The temperature system of on-vehicle battery - Google Patents

The temperature system of on-vehicle battery Download PDF

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Publication number
CN109599631A
CN109599631A CN201710945009.3A CN201710945009A CN109599631A CN 109599631 A CN109599631 A CN 109599631A CN 201710945009 A CN201710945009 A CN 201710945009A CN 109599631 A CN109599631 A CN 109599631A
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CN
China
Prior art keywords
battery
temperature
power
heat exchange
cooling
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Granted
Application number
CN201710945009.3A
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Chinese (zh)
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CN109599631B (en
Inventor
伍星驰
谈际刚
王洪军
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BYD Co Ltd
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BYD Co Ltd
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Publication of CN109599631A publication Critical patent/CN109599631A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention discloses a kind of humidity control systems of on-vehicle battery, comprising: compressor；The condenser being connected with compressor；The cooling branch of the car being connected with compressor and the cooling branch of battery, wherein the cooling branch of battery includes heat exchanger, and cooling branch includes evaporator in institute；Semiconductor heat exchange module, including colling end, fire end, the colling end of semiconductor heat exchange module are connected with heat exchanger, and semiconductor heat exchange module provides cooling power to state heat exchanger；Battery thermal management module, battery thermal management module connect to form heat exchange flow path with heat exchanger；Controller, the controller are connect respectively at the semiconductor heat exchange module, the battery thermal management module.The system can on-vehicle battery when the temperature is excessively high, battery temperature is adjusted, the temperature of on-vehicle battery is made to maintain preset range, avoids that there is a situation where due to the excessively high influence on-vehicle battery performance of temperature.

Description

The temperature system of on-vehicle battery
Technical field
The present invention relates to automobile technical field, in particular to a kind of humidity control system of on-vehicle battery.
Background technique
Currently, the performance climate environment of the on-vehicle battery of electric car is affected, environment temperature is excessively high or too low Will influence on-vehicle battery performance, it is therefore desirable to the temperature of on-vehicle battery is adjusted so that its temperature maintain it is default In range.
In the related technology, more coarse to the adjusting method of on-vehicle battery temperature, it can not be according to the practical shape of on-vehicle battery Condition accurately controls its heating power and cooling power, so that the temperature that not can guarantee on-vehicle battery maintains preset range It is interior.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the system can be vehicle-mounted it is an object of the invention to propose a kind of humidity control system of on-vehicle battery When battery temperature is excessively high, battery temperature is adjusted, the temperature of on-vehicle battery is made to maintain preset range, avoid occur due to The case where temperature excessively high influence on-vehicle battery performance.
In order to achieve the above objectives, the embodiment of the present invention proposes a kind of humidity control system of on-vehicle battery, including pressure Contracting machine；The condenser being connected with the compressor；The cooling branch of the car being connected with the compressor and the cooling branch of battery, In, the cooling branch of the battery includes heat exchanger, and the interior cooling branch includes evaporator, and the compressor is changed with described Hot device is associated with evaporator；Semiconductor heat exchange module, the semiconductor heat exchange module include colling end, fire end, and described half The colling end of conductor heat exchange module is connected with the heat exchanger, and the semiconductor heat exchange module is cold to provide for the heat exchanger But power；Battery thermal management module, the battery thermal management module connect to form heat exchange flow path with the heat exchanger；Controller, The controller is connect respectively at the semiconductor heat exchange module, the battery thermal management module.
The humidity control system of on-vehicle battery according to an embodiment of the present invention, can on-vehicle battery when the temperature is excessively high, it is right Battery temperature is adjusted, and the temperature of on-vehicle battery is made to maintain preset range, avoids occurring to influence since temperature is excessively high vehicle-mounted The case where battery performance.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, wherein
Fig. 1 a-1b is the structural schematic diagram of the humidity control system of the on-vehicle battery of one embodiment according to the present invention；
Fig. 2 a-2b is the structural schematic diagram of the humidity control system of the on-vehicle battery of second embodiment according to the present invention；
Fig. 3 is the control topological diagram of the humidity control system of on-vehicle battery according to an embodiment of the invention；
Fig. 4 a-4b is the structural schematic diagram of the humidity control system of the on-vehicle battery of third embodiment according to the present invention；
Fig. 5 is the structural schematic diagram of the humidity control system of the on-vehicle battery of the 4th embodiment according to the present invention；
Fig. 6 is the flow chart of the temperature control method of the load battery of one embodiment according to the present invention；
Fig. 7 is the structural schematic diagram of the humidity control system of the on-vehicle battery of the 5th embodiment according to the present invention；
Fig. 8 a-8b is the structural schematic diagram of the humidity control system of the on-vehicle battery of the 6th embodiment according to the present invention；
Fig. 9 is the control topological diagram of the humidity control system of on-vehicle battery in accordance with another embodiment of the present invention；
Figure 10 is the flow chart of the temperature control method of the load battery of the 5th embodiment according to the present invention；
Figure 11 a-11b is the structural representation of the humidity control system of the on-vehicle battery of the 7th embodiment according to the present invention Figure；
Figure 12 a-12b is the structural representation of the humidity control system of the on-vehicle battery of the 8th embodiment according to the present invention Figure；
Figure 13 is the flow chart of the temperature control method of the load battery of the 7th embodiment according to the present invention；
Figure 14 is the structural schematic diagram of the humidity control system of the on-vehicle battery of the 9th embodiment according to the present invention；
Figure 15 a-15b is the structural representation of the humidity control system of the on-vehicle battery of the tenth embodiment according to the present invention Figure；
Figure 16 is the flow chart of the temperature control method of the load battery of the 9th embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the temperature control method and temperature to describe the on-vehicle battery that the embodiment of the present invention proposes are adjusted System.
Fig. 1 a-1b is the structural schematic diagram of the humidity control system of the on-vehicle battery of one embodiment according to the present invention. As shown in Fig. 1 a-1b, which includes: battery thermal management module 1, heat exchanger 2 and 2 semiconductor heat exchange module 3 of heat exchanger, vehicle Carry air-conditioning and controller (specifically illustrating in figure).
Wherein, on-board air conditioner has air-conditioner air outlet, and the first air duct 100 is formed between air-conditioner air outlet and heat exchanger 2, On-board air conditioner is that heat exchanger 2 provides refrigeration work consumption by first air duct 100.Battery thermal management module 1 is connect with heat exchanger 2 Form heat exchange flow path.Semiconductor heat exchange module 3 includes colling end, fire end fire end and heat exchange blower fan 501, fire end and cooling The one of them at end is connected with heat exchanger 2, and to provide heating power/cooling power, heat exchange blower fan 501 corresponds to colling end or adds The setting of the other of hot end.Controller is connect with semiconductor heat exchange module 3, battery thermal management module 1 and on-board air conditioner respectively, Controller is used to obtain the temperature regulatory demand power P 1 of battery 4 and temperature adjusts actual power P2, and adjusts need according to temperature It asks power P 1 and temperature to adjust actual power P2 the power of semiconductor heat exchange module and/or on-board air conditioner is adjusted.
Further, in an embodiment of the present invention, as shown in Fig. 1 a-1b, semiconductor heat exchange module 3 can be with heat exchanger 2 and the colling end fire end fire end in parallel of battery 4；As shown in Fig. 2 a-ab, semiconductor heat exchange module 3 can also be connected on heat exchange Between device 2 and battery 4.Semiconductor heat exchange module 3 further includes the heat exchange blower fan 301 being connected with colling end or fire end, and exchange heat wind Machine 301 is to the air draft to outside compartment.
It is appreciated that the finger of battery 4 is installed on vehicle, power output is provided for vehicle and be other electricity consumptions on vehicle Equipment provides the energy storage device of electricity, can be repeatedly charged.
Specifically, semiconductor mold changing block 3 has fire end fire end and colling end, after power supply reversal connection, fire end Fire end and colling end place-exchange.The fire end fire end or colling end of semiconductor heat exchange module 3 are equipped with heat exchange blower fan 301, to the air draft to outside compartment.
As shown in Fig. 1 a-1b, when semiconductor heat exchange module 3 is with heat exchanger 2 and battery 4 in parallel, if working as the temperature of battery 4 When higher, such as when higher than 40 DEG C, the humidity control system of on-vehicle battery enters refrigerating mode, and controller controls semiconductor heat exchange Module 3 and battery thermal management module 1 are started to work, the positive power supply of semiconductor heat exchange module 3, as shown in Figure 1a, colling end access Cooling pipe, colling end start to freeze, and to cool down to the medium in cooling pipe, to cool down to battery 4, change simultaneously Air-heater 301 blows to the heat of fire end fire end outside vehicle.And if the temperature of battery is lower, such as less than 0 DEG C, vehicle mounted electric The humidity control system in pond enters heating mode, and semiconductor heat exchange module 3 and battery thermal management module 1 are started to work, semiconductor 3 reverse power supply of heat exchange module, as shown in Figure 1 b, fire end access cooling pipe, and fire end is begun to warm up, in cooling pipe Medium heated, to heat to battery 4, while heat exchange blower fan 301 blows to the refrigerating capacity of colling end outside vehicle.
As illustrated in figures 2 a-2b, when semiconductor heat exchange module 3 is connected between heat exchanger 2 and battery 4, pass through control half The power supply direction of conductor heat exchange module 3, can be completed the cooling/heating to battery.Fig. 2 a, which is that semiconductor heat exchange module 3 is positive, to be supplied Electricity, Fig. 2 b are 3 reverse power supply of semiconductor heat exchange module.
In carrying out cooling/or heating process to battery, controller also obtains the temperature regulatory demand power of battery in real time P1 and temperature adjust actual power P2, wherein temperature regulatory demand power P 1 is to adjust the temperature of battery within the object time To the target temperature of setting, it is desirable to provide to the power of battery 4, battery temperature adjusts actual power P2 and currently carries out to battery When temperature is adjusted, the actual temperature regulation power that battery 4 obtains, target temperature and object time are setting value, can be according to vehicle The actual conditions for carrying battery are preset, for example, when cooling down to battery, target temperature be can be set at 35 DEG C or so, when When heating to battery, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Controller can root It is adjusted according to power of the P1 and P2 to semiconductor heat exchange module 3 and/or on-board air conditioner, so that battery 4 can be in the object time Interior completion temperature is adjusted, and the temperature of on-vehicle battery is made to maintain preset range, avoids occurring due to influence too high or too low for temperature The case where on-vehicle battery performance.
Further, according to one embodiment of present invention, as shown in Fig. 1 a-1b and Fig. 2 a-2b, on-board air conditioner includes setting The first regulating valve 501 and first blower 501 corresponding with heat exchanger 2, the first blower 501 set in the first air duct 100 are used for Heat exchanging device 2 provides refrigeration work consumption.
Specifically, except can pass through semiconductor heat exchange module 3 for battery cooling refrigeration work consumption is provided, on-board air conditioner can also be passed through Cooling power is provided for battery, the cooling wind of air-conditioner air outlet can be blowed to heat exchanger 2 by the first blower 501, to mention for heat exchanger 2 For cooling power, and then the medium exchanged in hot flowpath is cooled down, and achievees the purpose that cooling battery 4.Controller can also be controlled Opening or turning off for the first regulating valve 51 is made, and the aperture of the first regulating valve 51 can be adjusted.First blower 501 by The control of controller, and wind speed is adjustable.Controller can be by adjusting the aperture regulation of the first regulating valve 51 for cooling down battery Cooling power.
Further, according to one embodiment of present invention, as shown in Fig. 1 a-1b and Fig. 2 a-2b, air-conditioner air outlet and vehicle The second air duct 200 is formed between compartment, on-board air conditioner further includes the second regulating valve 52 being arranged in the second air duct and the second wind Machine 502, the second blower 502 is for freezing to compartment.
On-board air conditioner is that heat exchanger 2 provides refrigeration work consumption by the first air duct 100, and on-board air conditioner passes through the second air duct 200 Refrigeration work consumption is provided for compartment.
Specifically, controller also can control opening or turning off for the second regulating valve 52, and can be to the second regulating valve 52 aperture is adjusted.Second blower 502 is by the control of controller, and wind speed is adjustable.When compartment needs to freeze, controller The unlatching of the second regulating valve 52, the work of the second blower 502 are controlled, the cooling wind of air-conditioner air outlet can be blowed to vehicle by the second blower 502 Compartment, to freeze to compartment.
In an embodiment of the present invention, as shown in Fig. 1 a-1b and Fig. 2 a-2b, battery thermal management module 1 may include: to set Set pump 12, the first temperature sensor 14, second temperature sensor 15 and the flow sensor 16 on heat exchange flow path, pump 12, the One temperature sensor 14, second temperature sensor 15 and flow sensor 16 are connect with controller；Wherein: pump 12 is dynamic for providing Power so that heat exchange flow path in media flow；First temperature sensor 14 is used to detect the entrance temperature for the medium for flowing into on-vehicle battery Degree；Second temperature sensor 15 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 16 is for detecting The flow velocity of medium in heat exchange flow path.
Further, battery thermal management module 1 can also include the media Containers 13 being arranged on heat exchange flow path, and medium holds Device 13 is for storing and providing medium to heat exchange flow path.Battery thermal management module 1 can also include: heater 11, heater 11 It is connect with controller, for heating the medium in heat exchange flow path.
Heater 11 can (Positive Temperature Coefficient, positive temperature coefficient refer to for PTC Positive temperature coefficient very big semiconductor material or component) heater, to carry out CAN communication with battery thermal management controller, There is provided heating power for the humidity control system of on-vehicle battery, controlled by battery thermal management controller, heater 11 it is not direct with Battery 4 contacts, safety with higher, dependable with function.
As shown in figure 3, controller may include battery manager, battery thermal management controller and semiconductor control, vehicle Carry air-conditioner controller, battery thermal management controller and the first temperature sensor 14, second temperature sensor 15 and flow sensor 16 electrical connections carry out CAN communication with pump 12, to obtain temperature and adjust actual power according to the density of the specific heat capacity of medium, medium P2 simultaneously controls the revolving speed of pump 31 and monitors medium temperature and velocity of medium.Semiconductor control can be to semiconductor heat exchange module 3 It is controlled with heat exchange blower fan 301.Battery manager can be managed battery 4, obtain voltage, the electric current of battery 4 And temperature information, and according to the specific heat capacity C of the target temperature of battery, object time t and battery, the mass M of battery, battery Internal resistance R, to calculate temperature regulatory demand power P 1.On-board air conditioner controller and the first regulating valve 51, the second regulating valve 52, first Blower 501 and the second blower 502 electrically connect, and to the opening and closing of the first regulating valve 51, the second regulating valve 52,501 and of the first blower The revolving speed of second blower 502 and the refrigeration work consumption of on-board air conditioner are controlled.On-board air conditioner controller and battery manager and Battery thermal management device carries out CAN communication, with the temperature regulatory demand power P 1 and battery thermal management obtained according to battery manager The temperature that controller obtains adjusts actual power P2 to the wind speed of the first blower 501, the second blower 502 and to the first regulating valve 51 It is adjusted with the aperture of the second regulating valve 52.It is logical that semiconductor control and battery manager and battery thermal management device carry out CAN Letter is adjusted real with the temperature that the temperature regulatory demand power P 1 and battery thermal management controller that are obtained according to battery manager obtain Border power P 2 controls the power supply direction of semiconductor heat exchange module and power.
According to one embodiment of present invention, controller is also used to obtain the temperature of battery, and judges that the temperature of battery is It is no to be greater than the first temperature threshold or be less than second temperature threshold value, wherein when the temperature of battery is greater than the first temperature threshold, into Enter refrigerating mode；When the temperature of battery is less than second temperature threshold value, into heating mode, the first temperature threshold is greater than the second temperature Spend threshold value.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the first temperature Threshold value can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, battery manager obtains the temperature of battery in real time, and is sent to on-board air conditioner controller And judged, the temperature information of battery can also be transmitted to battery thermal management controller by on-board air conditioner controller.
If it is determined that the temperature of battery is higher than 40 DEG C, illustrate that the temperature of the battery 4 at this time is excessively high, to avoid high temperature to the electricity The performance in pond 4 has an impact, and needs to carry out battery 4 cooling processing, and humidity control system enters refrigerating mode, on-board air conditioner control Device control the first regulating valve 51 of control processed is opened, and the cooling wind of on-board air conditioner is blowed to heat exchanger 2 by the first blower 501, with exchange Medium in hot device 2 in cooling pipe is cooled down, and medium again cools down battery 4 through battery thermal management module 1.When to electricity When pond is cooled down, the first regulating valve 51 is opened, and cooling airflow is to are as follows: air-conditioner air outlet-the 51-the first blower of the first regulating valve 501-heat exchangers 2.The cooling branch of car are as follows: 502-compartment of air-conditioner air outlet-the 52-the second blower of the second regulating valve.
There are two the cooling branches of battery in shown in Fig. 1 a, and the cooling duplexure 1 of battery: 2-heater of heat exchanger 11 (closes Close)-the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15 of pump-16-medium of flow sensor appearance 13-heat exchanger of device 2；Battery cools down duplexure 2: semiconductor heat exchange module (colling end)-heater 11 (closing)-pump 12-the first 16-media Containers of temperature sensor 14-battery, 4-second temperature sensor, 15-flow sensor 13-partly lead Body heat exchange module (colling end).
There is the cooling branch of a battery: 2-semiconductor of heat exchanger heat exchange module 3 (colling end)-heating in shown in Fig. 2 a Device 11 (closing)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16- 13-heat exchanger of media Containers 2.
And if the temperature of battery 4 is lower than 0 DEG C, illustrate that the temperature of battery 4 at this time is too low, to avoid low temperature to battery 4 Performance has an impact, and needs to carry out battery 4 heating treatment, and humidity control system enters heating mode, battery thermal management control Device controls heater 11 and opens, and semiconductor control controls 3 reverse power supply of semiconductor heat exchange module, while on-board air conditioner controller The first regulating valve 51 is kept to be in close state, in scheme shown in Fig. 1 b, medium flow direction are as follows: heater 11 (unlatching)-pump 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-16-media Containers of flow sensor 13-half Conductor heat exchange module (fire end fire end)-heater 11 (unlatching).In scheme shown in Fig. 2 b, medium flow direction are as follows: heat exchanger 2-semiconductor heat exchange module, 3 (fire end)-heater 11 (unlatching)-12-the first 14-battery of temperature sensor 4-the of pump Two temperature sensor-15-16-media Containers of flow sensor, 13-heat exchanger 2.
In an embodiment of the present invention, the humidity control system of on-vehicle battery further include: for detecting the electricity of on-vehicle battery The battery status detection module of stream, controller are also connected with battery status detection module.
The temperature regulatory demand power P 1 of battery how is obtained below with reference to specific embodiment description and temperature is adjusted in fact Border power P 2.
According to one embodiment of present invention, controller can be used for obtaining first when battery opening temperature is adjusted respectively Parameter, and according to the first parameter generate battery the first temperature regulatory demand power, and obtain battery temperature adjust when Second parameter, and according to the second temperature regulatory demand power of the second parameter generation battery, and according to the first temperature tune of battery Save the temperature regulatory demand power P 1 of the second temperature regulatory demand power generation battery of demand power and battery.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 4 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature are obtained between initial temperature and target temperature The first temperature difference Δ T1, and according to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, battery thermal management module 1 generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 4 Specific heat capacity, M are the quality of battery 4.
Second parameter is the average current I of battery 4 within a preset time, and battery thermal management module 1 passes through following formula (2) Generate second temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 4.
Specifically, the charging and discharging currents parameter of battery 4 can be detected by current Hall sensor, battery manager can root According to the current parameters of battery 4 in a period of time, the average current of battery 4 is estimated.
When being cooled down to battery 4, P1=Δ T1*C*M/t+I2*R；When being heated to battery 4, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, the inlet temperature and that controller is detected also according to the first temperature sensor 14 The outlet temperature of two temperature sensors 15 detection generates second temperature difference Δ T2, and according to the second temperature difference Δ T of each battery2 Actual power P2 is adjusted with the flow velocity v that flow sensor 16 the detects temperature for generating battery.
Further, according to one embodiment of present invention, temperature is generated by following formula (3) adjust actual power P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
Specifically, after vehicle powers on, battery manager judges whether battery 4 needs to carry out temperature tune according to battery temperature Section then sends opening temperature to on-board air conditioner controller by CAN communication and adjusts function if it is determined that battery 4 needs temperature to adjust The information of energy, on-board air conditioner controller forward this information to battery thermal management controller, battery thermal management controller control pump 12 to default revolving speed (such as slow-speed of revolution) start-up operation.
Then, battery manager obtains the initial temperature (i.e. Current Temperatures) of battery 4, target temperature and reaches from initial temperature To the object time t of target temperature, wherein target temperature and object time t can be preset according to the actual situation, and according to Formula (1) calculates the first temperature regulatory demand power of battery 4.Meanwhile battery manager obtains battery 4 within a preset time Average current I, and according to formula (2) calculate battery 4 second temperature regulatory demand power.Then, battery manager according to The the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 of battery 4 (i.e. will The temperature of battery 4 is adjusted to the demand power of target temperature within the object time), wherein when being cooled down to battery 4, P1 =Δ T1*C*M/t+I2* R, when being heated to battery 4, P1=Δ T1*C*M/t-I2*R.Also, battery thermal management controls Device obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains the inspection of flow sensor 16 The flow rate information of survey adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.Finally, controller device is according to battery 4 P1, P2 is adjusted by the power of control semiconductor heat exchange module 3 or heater 11 or on-board air conditioner accurately to control Heating power/refrigeration work consumption of battery 4 processed.
As can be seen from the above embodiments, P1 consists of two parts, when battery 4 needs cooling, if the initial temperature of battery 4 Be 45 DEG C, target temperature is 35 DEG C, then battery 4 drop to from 45 DEG C 35 DEG C need the heat that distributes be it is fixed, pass through formula (1) That is Δ T1* C*M/t is directly calculated and can be obtained.Meanwhile battery 4 is in cooling procedure, there are electric discharge and charging process, this processes Heat can be generated, the heat of this part can also be directly obtained by detecting the average current I of battery 4, i.e. by formula (3) I2* R directly calculates the heating power of present battery 4, i.e. second temperature regulatory demand power.When cooling of the invention is completed Between be set based on object time t (t can according to user demand either vehicle actual design situation change).It is determining After object time t required for cooling completion, so that it may estimate out the temperature regulatory demand power of 4 cooling requirement of present battery P1, P1=Δ T1*C*M/t+I2*R.And start if it is heating function, then temperature regulatory demand power P 1=Δ T1*C*M/t- I2* R, i.e., battery 4 during heating, the electric discharge of battery 4 or charging current are bigger, required heating power, that is, temperature Regulatory demand power P 1 is smaller.
The cooling time of battery 4 is influenced by cooling efficiency, since cooling efficiency is current by ambient temperature and battery 4 The influence of temperature, during battery 4 is cooling, the efficiency of humidity control system be also it is continually changing, so cooling efficiency Be unlikely to be 100%, thus only according to P1 be can not accurate regulating cell 4 cooling time, it is necessary to detect battery 4 Temperature adjusts actual power P2.In the present invention, the temperature of battery 4, which adjusts actual power P2, can pass through formula (3) i.e. Δ T2* C*m is calculated.P2 can also can also be calculated by the practical cooling power P2 of battery by formula (4) i.e. Δ T3*C*m1 It obtains, wherein Δ T3 is the temperature change of battery 4 in a certain period of time, and C is the specific heat capacity of battery 4, and m1 is the matter of battery 4 Amount.But since the quality of general battery is larger, so temperature change is unobvious in the unit time, need the long period that can just examine The temperature difference is measured, requirement of real-time is not met, so calculating P2 power generally according to formula (3).
It being influenced by cooling efficiency, P2 is difficult to be equal to P1, in order to enable the cooling object time t of battery 4 is more acurrate, It needs to be adjusted according to P1 and P2 in real time, to ensure the temperature regulatory demand power P 1 of battery 4 and the temperature adjusting reality of battery Border power P 2 is equal.
It is how real according to temperature regulatory demand power P 1 and temperature adjusting that controller is described below with reference to specific embodiment The power of semiconductor heat exchange module and/or on-board air conditioner is adjusted in border power P 2.
According to one embodiment of present invention, when for refrigerating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, And increase the refrigeration work consumption of semiconductor heat exchange module 3 and/or on-board air conditioner according to difference power, and in temperature regulatory demand power When P1 is less than or equal to temperature and adjusts actual power P2, reduce semiconductor heat exchange module 3 and/or on-board air conditioner refrigeration work consumption or Keep the refrigeration work consumption of semiconductor heat exchange module 3 and/or on-board air conditioner constant.
Further, controller is greater than temperature adjusting actual power P2, and battery in the temperature regulatory demand power P 1 Temperature be greater than the first preset temperature threshold when, control semiconductor heat exchange module 3 with full refrigeration work consumption operation.Wherein, first is pre- If temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.
And if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2, and the temperature of battery is pre- less than first If temperature threshold, controller temperature also in compartment increases the refrigeration of semiconductor heat exchange module 3 when being not up to air-conditioning set temperature Power.
It is greater than temperature in temperature regulatory demand power P 1 and adjusts practical function P2, and the temperature of battery is greater than the first preset temperature When threshold value, controller also increases the aperture of first regulating valve 51, while reducing the aperture of the second regulating valve 52.
Specifically, after the starting of battery refrigerating function (humidity control system enters refrigerating mode), on-board air conditioner controller Battery refrigerating function starting information is sent to battery thermal management controller and semiconductor control.On-board air conditioner controller receives electricity The temperature regulatory demand power P 1 for the battery that pool manager is sent, and the information is transmitted to battery thermal management controller and is partly led Body controller.In battery cooling procedure, on-board air conditioner controller controls the first regulating valve 51 and the second regulating valve 52 is opened, together When control the first blower 501 and the second blower 502 and start to work.On-board air conditioner controller receives battery thermal management controller and sends Water temperature information and the temperature of battery adjust actual power P2, and the information is transmitted to battery manager and semiconductor changes control Device.In battery cooling procedure, the temperature regulatory demand power P 1 of on-board air conditioner controller control cell and the temperature of battery are real Power P 2 information in border judges whether the temperature of battery reaches if temperature regulatory demand power P 1 is greater than temperature actual power P2 To 45 DEG C (higher temperature), if the temperature of battery reaches 45 DEG C, on-board air conditioner controller reduces opening for the second regulating valve 52 Degree increases the aperture of the first regulating valve 61, reduces interior cooling wind flow, increases the cooling wind flow of the cooling branch of battery, with The cooling and interior cooling refrigerating capacity distribution of battery is adjusted, meanwhile, semiconductor control controls semiconductor heat exchange module 3 to make entirely Cold Power operation, i.e., maximum refrigeration work consumption are run, and reduce caused interior cooling effect drop to alleviate interior cooling coolant quantity Low influence, and heat exchange blower fan is controlled with high rotary speed working.If the temperature of battery is not higher than 45 DEG C, the temperature in compartment is judged Whether degree reaches air-conditioning set temperature, if reached, on-board air conditioner controller reduces the aperture of the second regulating valve 602, increases The aperture of first regulating valve 601, it is preferential to meet interior refrigeration if the temperature in compartment does not reach air-conditioning set temperature Amount demand, temperature regulatory demand power P 1 and temperature adjust the difference portion cooling power between actual power P2 at this time, by half Conductor heat exchange module 3 provides.In battery refrigerating function opening process, it is actually cold that on-board air conditioner controller monitors battery pack in real time But the real-time cooling power information of power and semiconductor heat exchange module, and according to interior cooling power demand and the cooling function of battery pack Rate demand information determines the aperture between the first regulating valve 51 and the second regulating valve 52, so that regulating cell is cooling and car is cold But the cooling air quantity distribution in circuit, so that the refrigeration work consumption in the battery cooling wind circuit that on-board air conditioner provides exchanges heat plus semiconductor The cooling power of module 3 is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if on-board air conditioner receives The battery sent to battery manager is cooling to complete information, i.e. the temperature of battery reaches 35 DEG C, then on-board air conditioner controller forwards The cooling information of completing of battery gives battery thermal management controller, and battery is cooling to be completed.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, on-board air conditioner preferentially meets the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2 When, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, the refrigeration work consumption of on-board air conditioner can be reduced, opening for the first regulating valve is reduced Degree, or reduce the refrigeration work consumption reduction of semiconductor heat exchange module 3, to save electric energy, or keep the refrigeration function of on-board air conditioner Rate, the first control valve opening are constant, and the refrigeration work consumption of semiconductor heat exchange module 3 is constant.
It is appreciated that the second regulating valve 51 is closed if interior cooling is not opened, the second blower 502 does not work.
Further, battery thermal management module further includes heater, and heater is used to heat the medium in heat exchange flow path, When for heating mode, battery 4 is heated by semiconductor heating module 3 and heater 11.
According to one embodiment of present invention, when for heating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the power between the temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained Difference, and increased according to difference power for heating the heater 11 of battery and/or the power of semiconductor heat exchange module 3, and in temperature When spending regulatory demand power P 1 less than or equal to temperature adjusting actual power P2, heater 11 and/or semiconductor heat exchange mould are kept The power of block 3 is constant.
Specifically, when work is in heating mode, controller obtains the P1 and P2 of battery 4, and is judged.If battery 4 P1 is greater than P2, illustrates if can not complete the heating of battery 4, controller within the object time according to current heating power The difference power between the P1 and P2 of battery 4 is obtained, and heater 11 and/or semiconductor heat exchange module 3 are increased according to difference power Power, wherein the difference power of P1 and P2 is bigger, and the power increase of heater 11 and/or semiconductor heat exchange module 3 is more, so that The temperature of battery 4 is increased to target temperature in preset time t.And if P1 is less than or equal to P2, it can reduce heater 11 And/or the heating power of semiconductor heat exchange module 3 to be to save electric energy, or keeps heater 11 and/or semiconductor heat exchange module 3 Power is constant.When the temperature of battery reaches the second set temperature, such as at 10 DEG C, then the heating of battery 4 is completed, and battery manager is logical The information that CAN communication sends closing temperature regulatory function to battery thermal management controller is crossed, stops carrying out to control heater 11 Heating.If the temperature of battery 4 still is below 10 after humidity control system enters the heating mode long period, such as after 2 hours DEG C, then battery thermal management controller suitably increases the power of heater 11 and/or semiconductor heat exchange module 3, so that battery 4 is as early as possible Complete heating.
In an embodiment of the present invention, controller is also greater than temperature adjusting actual power P2 in temperature regulatory demand power P 1 When, increase the revolving speed of heat exchange blower fan.
Further, according to one embodiment of present invention, controller be also used to be less than in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, the revolving speed of reduction pump 12 or the revolving speed of holding pump 12 are constant, and adjusting in temperature need to When power P 1 being asked to be greater than temperature adjusting actual power P2, the revolving speed of pump 12 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery 4 is less than or waits It is reduced in the revolving speed that P2 and/or semiconductor heat exchange module 3 then control pump 12, to save electric energy, or keeps the revolving speed of pump 12 not Become.And if the P1 of battery 4 is greater than P2, except control air conditioner refrigerating power increases, the aperture of the first regulating valve 61 increases, semiconductor Outside the power of heat exchange module 3 or heater 11 increases, the revolving speed that can also control pump 12 is improved, and is flowed with increasing in the unit time Mass of medium through cooling flowing path cross-sectional area, so that the temperature for improving battery 4 adjusts actual power P2, in object time t Interior realization temperature is adjusted.
The adjustment process of system shown in figure Fig. 1 a-1b and 2a-2b is described below with reference to specific example.
1, when cooling to battery 4:
When battery refrigerating function is opened, the power supply of semiconductor heat exchange module forward direction, the access of semiconductor heat exchange module colling end Battery cooling circuit.
The cooling power of the cooling branch of battery is the cooling function that the air-conditioning cooling wind of heat exchanger 2 is blown over by the first regulating valve Rate adds the cooling power for flowing through semiconductor heat exchange module colling end and coolant temperature being reduced.Car cools down the cold of branch But power is the cooling power that the air-conditioning cooling wind in compartment is blowed to by the second regulating valve.
(1) battery is cooling distributes with interior cooling initial power:
If battery cooling requirement power is P1, the practical cooling power of battery is P2, and P3 is the maximum of semiconductor heat exchange module Cooling power, P6 are interior cooling power, and P7 is compressor maximum cooling power.
When the sum of power of battery cooling requirement power P 1 and interior cooling requirement power P 6≤cooling function of compressor maximum Rate P7, i.e. P1+P6≤P7, and P1 < P7, P6 < P7, then compressor is run according to P1+P6 refrigeration work consumption.Control second is adjusted simultaneously The aperture of valve is saved, so that interior cooling power is P6.The aperture of the first regulating valve is controlled, so that battery cooling power is P1.
As P7 < P1+P6≤P7+P3, Pe=P1+P6-P7, Pf=P1+P6-P3, then compressor is according to maximum refrigeration work consumption P7 operation, semiconductor heat exchange module are run according to cooling power Pe.The cooling power of the cooling branch of battery is P1, the cooling branch of car Road power=P6.The aperture of the second regulating valve is controlled simultaneously, so that interior cooling power is P6, the first regulating valve of control is opened Degree, so that battery cooling power is P1.
As P1+P6 > P7+P3, then judge whether battery temperature is greater than 45 DEG C, is then preferably that battery is cold if it is greater than 45 DEG C But cooling power is provided, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to the cooling power P 3 of maximum Operation, while improving heat exchange blower fan revolving speed.Increase the aperture of the first regulating valve, the revolving speed of the first blower is improved, so that battery is cold But the cooling power of branch is P1, reduces the aperture of the second regulating valve, so that interior cooling branch power=P7+P3-P1.If Determine that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, is then preferably interior offer cooling power, pressure Contracting machine is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange Rotation speed of fan.Increase the aperture of the second regulating valve, improve the revolving speed of the second blower, so that the cooling power of interior cooling branch is P6 reduces the aperture of the second regulating valve, so that cooling power=P7+P3-P6 of the cooling branch of battery.If vehicle interior temperature is Reach set temperature, then preferentially meets the cooling power of battery.The revolution speed in battery cooling circuit can also be improved simultaneously, mentioned High heat exchange power.
(2) power distribution in battery cooling procedure:
If P1 > P2, and Pc=P1-P2, P1+P6+Pc < P7, then compressor increases refrigeration work consumption Pc, while increasing the The aperture of one regulating valve improves the revolving speed of the first blower, heat exchange blower fan and pump, to improve battery cooling power.
If P1 > P2, and Pc=P1-P2, P7 < P1+P6+Pc≤P7+P3, Pg=P1+P6+Pc-P7, Ph=P1+P6+ Pc-P3, then compressor is run according to maximum refrigeration work consumption P7, and semiconductor takes a breath module according to cooling power Pg operation.Or pressure Contracting machine is run according to refrigeration work consumption Ph, and semiconductor takes a breath module according to the cooling operation of power P 3 of maximum.Or compressor according to The cooling power P 7 of maximum is run, and semiconductor heat exchange module increases cooling power Pc.Or compressor increases cooling power Pc, partly Conductor heat exchange module is run according to the cooling power P 3 of maximum.Or be that compressor cooling power is constant, semiconductor heat exchange module Cooling power increase Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is constant.And or Person's compressor cooling power increases 0.5*Pc, and semiconductor heat exchange module cooling power increases 0.5Pc.Or according to compressor and The ratio of the maximum cooling power of semiconductor heat exchange module respectively proportionally increases cooling power.Increase the first regulating valve simultaneously Aperture, the revolving speed of the first blower, heat exchange blower fan and pump is improved, so that the cooling power of the cooling branch of battery increases Pc.
If P1 > P2, Pc=P1-P2, and P1+P6+Pc > P7+P3, then compressor is transported according to the cooling power P 7 of maximum Row, while semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving rotation speed of fan, battery thermal management heat exchange mould Block improves revolution speed, to improve heat exchange power.At this point, judging whether battery temperature is greater than 45 DEG C, if it is greater than 45 DEG C, then preferentially Cooling power is provided for battery cooling, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to maximum cold But power P 3 is run, while improving rotation speed of fan.Increase the aperture of the first regulating valve, the revolving speed of the first blower is improved, so that electric The cooling power of the cooling branch in pond is P1+Pc, reduces the aperture of the second regulating valve, the revolving speed of the second blower is improved, so that interior Cooling branch power=P7+P3-P1-Pc, while revolution speed raising is controlled, heat exchange blower fan revolving speed improves, so that the cooling branch of battery The cooling power on road increases Pc.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then excellent Cooling power first is provided for car, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is cooling according to maximum Power P 3 is run, while improving heat exchange blower fan revolving speed.Increase the aperture of the second regulating valve, improves the revolving speed of the second blower, so that The cooling power of the cooling branch of car is P6, reduces the aperture of the first regulating valve, so that the cooling power of the cooling branch of battery= P7+P3-P6.If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery.
If P1≤P2, and Pc=P2-P1 then maintain compressor refrigeration power constant, semiconductor refrigerating power is maintained not Become, or reduce the refrigeration work consumption of compressor, reduces the cooling power of semiconductor heat exchange module, or reduce by the first regulating valve Aperture, or the revolving speed of the first blower, heat exchange blower fan and pump is reduced, so that the cooling power decline of the cooling duplexure of battery Pc。
2, when being heated to battery:
When battery heating function is opened, semiconductor heat exchange module reverse power supply, the heating of semiconductor heat exchange module fire end It terminates into battery heating circuit.
The heating power of battery heating circuit adds the raised heating power of coolant temperature On flow through semiconductor heat exchange module fire end fire end and make the raised heating power of coolant temperature.
(1) set battery demand for heat power as P1, the practical heating power of battery is P2, P4 be semiconductor heat exchange module most Big heating power, P5 are the maximum heating power of ptc heater.
If P1≤P5, ptc heater provides heating power according to heating power P1 for battery.
If P1 > P5, and P1≤P5+P4, P1-P5=Pd, then ptc heater is battery according to maximum heating power P 5 Heating power is provided, while semiconductor heat exchange module provides heating power according to heating power Pd for battery, while improving heat exchange Rotation speed of fan, battery thermal management heat exchange module improves revolution speed, to improve heat exchange power.If P1 > P5, and P1 > P5+P4, Then ptc heater provides heating power according to maximum heating power P 5 for battery, while semiconductor heat exchange module is according to most greatly Thermal power P3 provides heating power for battery, while improving heat exchange blower fan revolving speed, and battery thermal management heat exchange module improves revolution speed, To improve heat exchange power.
(2) in heating process, if P1≤P2, and Pc=P2-P1, then semiconductor heat exchange module reduces heating power Pc, It reduces heat exchange blower fan revolving speed or ptc heater heating power reduces Pc, while battery thermal management heat exchange module reduces pump and turns Speed, to save electric energy.Or keep current heating power constant.
During heating, if when P1 > P2, Pc=P1-P2, and P1+Pc≤P5, then ptc heater increases heating function Rate Pc, while battery thermal management module control revolution speed improves, to improve battery heating power.
If P1 > P2, Pc=P1-P2, and P5 < P1+Pc≤P5+P4, Pi=P1+Pc-P5, Pj=P1+Pc-P4, then Ptc heater is run according to maximum heating power P 5, and semiconductor heat exchange module is run according to heating power Pi.Or PTC heating Device is run according to heating power Pj, and semiconductor heat exchange module is run according to maximum heating power P 4.Or ptc heater is according to most Big heating power P5 provides heating power for battery, and semiconductor heat exchange module increases heating power Pc.It or is that heater adds Thermal power is constant, and the heating power of semiconductor heat exchange module increases Pc.Or heater heating power increases Pc, semiconductor changes The heating power of thermal modules is constant.Or ptc heater heating power increases 0.5*Pc, semiconductor heat exchange module heating power Increase 0.5Pc, or respectively proportionally according to the ratio of ptc heater and the maximum heating power of semiconductor heat exchange module Increase heating power.Heat exchange blower fan revolving speed is improved simultaneously, and battery thermal management heat exchange module improves revolution speed, to improve heat exchange function Rate, so that battery heating power increases Pc.
If P1 > P2, Pc=P1-P2, and P1+Pc > P5+P4, then ptc heater is electricity according to maximum heating power P 5 Pond provides heating power, while semiconductor heat exchange module provides heating power according to maximum heating power P 4 for battery, mentions simultaneously High heat exchange blower fan revolving speed, battery thermal management heat exchange module improves revolution speed, to improve heat exchange power.
Scheme shown in Fig. 4 a-4b is the structural schematic diagram of the humidity control system of battery when on-board air conditioner is not opened. In Fig. 4 a, battery cooling power is supplied by semiconductor heat exchange module 3, this scheme is generally used for that interior temperature is lower, and air-conditioning is not opened It opens, but battery pack needs under cooling operating condition.Because ambient temperature is lower, battery temperature regulatory demand power compared with It is low, it is cooled down by semiconductor heat exchange module 3, advantageously reduces air conditioning energy consumption.The difference in scheme and Fig. 4 a in Fig. 4 b It is semiconductor heat exchange module 3 and heat exchanger 2 is series relationship.
Fig. 5 is another battery thermal management system, and compared with Fig. 1 a-1b, maximum difference is that on-board air conditioner and semiconductor change Thermal modules 3 do not work.When this scheme is lower suitable for car/vehicle external environment temperature, cooled external air passes through second The 51-the first blower of blower the 52-the first regulating valve of the 502-the second regulating valve 501 is blown on heat exchanger 2, is provided for battery cooling Cooling wind.This scheme can make full use of ambient air outside, can save electricity without being additionally provided refrigeration work consumption.
The humidity control system of on-vehicle battery according to an embodiment of the present invention, by the temperature regulatory demand function for obtaining battery Rate and temperature adjust actual power, and adjust actual power to semiconductor heat exchange mould according to temperature regulatory demand power and temperature The power of block/or on-board air conditioner is adjusted.Thus, it is possible to when on-vehicle battery is too high or too low for temperature, according to on-vehicle battery Actual state battery temperature is adjusted, so that the temperature of on-vehicle battery is maintained preset range, avoid occur due to temperature The case where too high or too low influence on-vehicle battery performance.
Fig. 6 is the flow chart of the temperature control method of the on-vehicle battery of one embodiment according to the present invention.Wherein, as schemed Shown in 1a-1b, on-vehicle battery humidity control system includes heat exchanger；On-board air conditioner, on-board air conditioner have air-conditioner air outlet, air-conditioning The first air duct is formed between air outlet and heat exchanger；Semiconductor heat exchange module, semiconductor heat exchange module include colling end, heating The one of them of end fire end and heat exchange blower fan, fire end and colling end is connected with heat exchanger, to provide heating power/cooling Power, heat exchange blower fan correspond to the setting of the other of colling end or fire end；As shown in fig. 6, the temperature adjusting side of on-vehicle battery Method the following steps are included:
S1 obtains the temperature regulatory demand power P 1 of battery.
Further, according to one embodiment of present invention, the temperature regulatory demand power P 1 for obtaining battery specifically includes: The first parameter when the opening temperature adjusting of battery is obtained, and generates the first temperature regulatory demand function of battery according to the first parameter Rate.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand function of battery according to the second parameter Rate.The temperature tune of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Save demand power P1.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate battery according to the first parameter The first temperature regulatory demand power specifically include: obtain the first temperature difference Δ T between initial temperature and target temperature1.Root According to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, is passed through The second temperature regulatory demand power of following formula (2) generation battery:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
Wherein, when being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C*M/t-I2*R。
S2, the temperature for obtaining battery adjust actual power P2.
According to one embodiment of present invention, the temperature for obtaining battery adjusts actual power P2 and specifically includes: acquisition is used for The inlet temperature and outlet temperature of the flow path of regulating cell temperature, and obtain the flow velocity v that medium flow field enters flow path.According to the stream of battery The inlet temperature and outlet temperature on road generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2Temperature is generated with flow velocity v Degree adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
S3, according to temperature regulatory demand power P 1 and temperature adjust actual power P2 to semiconductor heat exchange module and/vehicle Air-conditioning power is carried to be adjusted.
Further, in an embodiment of the present invention, as shown in Fig. 1 a-1b, semiconductor heat exchange module include colling end and Fire end, semiconductor heat exchange module are in parallel with heat exchanger and battery；As shown in Fig. 2 a-ab, semiconductor heat exchange module can also be gone here and there It is associated between heat exchanger and battery.Semiconductor heat exchange module further includes the heat exchange blower fan being connected with colling end or fire end, heat exchange Blower is to the air draft to outside compartment.
Specifically, semiconductor mold changing block has fire end fire end and colling end, and after power supply reversal connection, fire end adds Hot end and colling end place-exchange.The fire end fire end or colling end of semiconductor heat exchange module are equipped with heat exchange blower fan, to The air draft to outside compartment.
When semiconductor heat exchange module is with heat exchanger and battery in parallel, if when the temperature of battery is higher, such as higher than 40 DEG C when, the humidity control system of on-vehicle battery enters refrigerating mode, and semiconductor heat exchange module and battery thermal management module start work Make, the power supply of semiconductor heat exchange module forward direction, as shown in Figure 1a, colling end access heat exchange flow path, colling end starts to freeze, with exchange Medium in hot flowpath is cooled down, and to cool down to battery, while heat exchange blower fan blows to the heat of fire end fire end Outside vehicle.And if the temperature of battery is lower, such as less than 0 DEG C, the humidity control system of on-vehicle battery enters heating mode, partly leads Body heat exchange module and battery thermal management module are started to work, semiconductor heat exchange module reverse power supply, as shown in Figure 1 b, heating termination Enter cooling pipe, fire end is begun to warm up, to heat to the medium in cooling pipe, to heat to battery, simultaneously Heat exchange blower fan blows to the refrigerating capacity of colling end outside vehicle.
As illustrated in figures 2 a-2b, when semiconductor heat exchange module is connected between heat exchanger and battery, by controlling semiconductor The power supply direction of heat exchange module, can be completed the cooling/heating to battery.Fig. 2 a is the power supply of semiconductor heat exchange module forward direction, figure 2b is semiconductor heat exchange module reverse power supply.
In carrying out cooling/or heating process to battery, the temperature regulatory demand power P 1 and temperature of battery are also obtained in real time Degree adjusts actual power P2, wherein the temperature of battery is adjusted to setting within the object time by temperature regulatory demand power P 1 Target temperature, it is desirable to provide to the power of battery, battery temperature adjusts actual power P2 and currently carries out temperature tune to battery When section, the actual power that battery obtains, target temperature and object time are setting value, can be according to the actual conditions of on-vehicle battery It is preset, for example, target temperature can be set at 35 DEG C or so when cooling down to battery, when being heated to battery, Target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Then, according to P1 and P2 to semiconductor heat exchange mould The power of block is adjusted, so that battery can complete temperature adjusting within the object time, maintains the temperature of on-vehicle battery Preset range, avoids that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
Further, according to one embodiment of present invention, as shown in Fig. 1 a-1b and Fig. 2 a-2b, on-vehicle battery temperature tune Section system can also include the first regulating valve 51 being connected with air-conditioner air outlet and the first blower being connected with the first regulating valve, First blower freezes for heat exchanging device.
Specifically, except can pass through semiconductor heat exchange module for battery cooling refrigeration work consumption is provided, on-board air conditioner can also be passed through Cooling power is provided for battery.When cooling down to battery, the first regulating valve of control is opened, and the first blower is by on-board air conditioner Cooling wind blows to heat exchanger, is cooled down with the medium in cooling pipe in heat exchanging device, medium is again through battery thermal management module Battery is cooled down.The cooling power of battery can be used to cool down by adjusting the aperture regulation of the first valve.In cooling procedure It is adjusted also according to power of the P1 and P2 to on-board air conditioner.So that battery can complete temperature adjusting within the object time, make The temperature of on-vehicle battery maintains preset range, avoids occurring due to the feelings too high or too low for temperature for influencing on-vehicle battery performance Condition.
Further, according to one embodiment of present invention, as shown in Fig. 1 a-1b and Fig. 2 a-2b, on-vehicle battery temperature tune Section system further includes the second regulating valve being connected with air-conditioner air outlet and the second blower for being connected with the second regulating valve, the second wind Machine is for freezing to compartment.
Specifically, when compartment needs to freeze, the second regulating valve of control is opened, and the second blower work, the second blower can incite somebody to action The cooling wind of air-conditioner air outlet blows to compartment, to freeze to compartment.
In an embodiment of the present invention, as shown in Fig. 1 a-1b and Fig. 2 a-2b, battery thermal management module includes being serially connected Heater, pump and media Containers, wherein pump be connected between the first end of heat exchanger and the first end of battery, media Containers It is connected between the second end of heat exchanger and the second end of battery, battery thermal management module further includes that the first end of battery is arranged in The first temperature sensor, and the second temperature sensor and flow sensor of the second end of battery are set.
Specifically, medium is heated except semiconductor heat exchange module can be passed through, medium can be also carried out by heater Heating, to carry out temperature adjusting to battery when battery temperature is lower.Heater can be ptc heater, provide and add for battery Thermal power, heater is not direct to be contacted with battery, safety with higher, dependable with function.Pump is mainly used for providing Power, media Containers are mainly used for storage medium and receive the medium added to humidity control system, as Jie in cooling pipe When matter is reduced, the medium in media Containers can be automatically replenished.First temperature sensor is to detect cell flow entrance medium Temperature, temperature of the second temperature sensor to detect cell flow outlet medium.Flow sensor is adjusted to detect temperature The flow rate information of pipeline internal medium in system.
According to one embodiment of present invention, above-mentioned temperature control method can also include: the temperature for obtaining battery, sentence Whether the temperature in power-off pond is greater than the first temperature threshold；When the temperature of battery is greater than the first temperature threshold, into refrigerating mode； When the temperature of battery is less than or equal to the first temperature threshold, continue to judge whether the temperature of battery is less than second temperature threshold value； When the temperature of battery is less than second temperature threshold value, into heating mode, wherein the first temperature threshold is greater than second temperature threshold Value.
Specifically, after vehicle powers on, the temperature of battery is obtained in real time, and is judged.If it is determined that the temperature of battery is high In 40 DEG C, illustrate that 4 temperature of battery is excessively high at this time, to avoid high temperature from having an impact the performance of the battery, need to battery into Row cooling processing, into refrigerating mode, control the first regulating valve 51 of control is opened, and the first blower is by the cooling wind of on-board air conditioner It to heat exchanger, is cooled down with the medium in cooling pipe in heat exchanging device, and controls the power supply of semiconductor heat exchange module forward direction, with Medium in exchange hot flowpath is cooled down, and medium again cools down battery through battery thermal management module.
And if the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery at this time is too low, to avoid low temperature to the performance of electricity 4 It has an impact, needs to carry out heating treatment to battery, into heating mode, control heater 11 and open, semiconductor heat exchange module Reverse power supply, while on-board air conditioner keeps the first regulating valve to be in close state.
According to one embodiment of present invention, when for refrigerating mode, according to temperature regulatory demand power P 1 and temperature tune The power of semiconductor heat exchange module and/or on-board air conditioner, which is adjusted, in section actual power P2 specifically includes: judging that temperature is adjusted Whether demand power P1, which is greater than temperature, adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts practical function Rate P2 then obtains the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and is increased according to difference power Add the power of semiconductor heat exchange module and/or on-board air conditioner；If temperature regulatory demand power P 1 is adjusted less than or equal to temperature Actual power P2 then reduces the refrigeration work consumption of semiconductor heat exchange module and/or on-board air conditioner, or keeps semiconductor heat exchange module And/or the refrigeration work consumption of on-board air conditioner is constant.
Further, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and root are obtained It is specifically included according to the power that difference power increases semiconductor heat exchange module: adjusting reality when temperature regulatory demand power P 1 is greater than temperature Power P 2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module and run with full refrigeration work consumption. Wherein, the first preset temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.
Actual power P2 is adjusted when temperature regulatory demand power P 1 is greater than temperature, and the temperature of battery is less than the first default temperature When spending threshold value, further judge whether temperature reaches air-conditioning set temperature in compartment；If not up to air-conditioning set temperature, increases Add the refrigeration work consumption of semiconductor heat exchange module and the revolving speed of heat exchange blower fan.
It is greater than temperature in temperature regulatory demand power P 1 and adjusts practical function P2, and the temperature of battery is greater than the first preset temperature When threshold value, also increase the aperture of first regulating valve, while reducing the aperture of the second regulating valve.
Specifically, in battery cooling procedure, the temperature regulatory demand power P 1 of control cell and the temperature of battery are practical 2 information of power P judges whether the temperature of battery reaches if temperature regulatory demand power P 1 is greater than temperature actual power P2 45 DEG C (higher temperature), if the temperature of battery reaches 45 DEG C, the aperture of the second regulating valve is reduced, increases the first regulating valve Aperture reduces interior cooling wind flow, increases the cooling wind flow of the cooling branch of battery, and to adjust, battery is cooling and car is cooling Refrigerating capacity distribution, while controlling semiconductor heat exchange module and run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, with alleviation The cooling coolant quantity of car reduces the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high rotary speed working. If the temperature of battery is not higher than 45 DEG C, judge whether the temperature in compartment reaches air-conditioning set temperature, if reached, reduces The aperture of second regulating valve increases the aperture of the first regulating valve, if the temperature in compartment does not reach air-conditioning set temperature, Preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 and temperature adjust the difference between actual power P2 at this time Part cooling power is provided by semiconductor heat exchange module.In battery refrigerating function opening process, on-board air conditioner real time monitoring electricity The real-time cooling power information of the practical cooling power of pond group and semiconductor heat exchange module, and according to interior cooling power demand and electricity Pond group cooling power demand information, determines the aperture between the first regulating valve and the second regulating valve, so that regulating cell is cooling and The cooling air quantity of interior cooling circuit distributes, and partly leads so that the refrigeration work consumption in the battery cooling wind circuit that on-board air conditioner provides adds The cooling power of body heat exchange module is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if battery Temperature reaches 35 DEG C, then battery is cooling completes.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, on-board air conditioner preferentially meets the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2 When, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, it can reduce the refrigeration work consumption of on-board air conditioner, the system of semiconductor heat exchange module Cold power to save electric energy, or keeps refrigeration work consumption, the refrigeration work consumption of semiconductor heat exchange module of on-board air conditioner constant.
It is appreciated that the second regulating valve is closed if interior cooling is not opened, the second blower does not work.
According to one embodiment of present invention, when for heating mode, according to temperature regulatory demand power and the temperature The heating power of semiconductor heat exchange module, which is adjusted, in adjusting actual power specifically includes: judging temperature regulatory demand power P 1 Whether it is greater than temperature and adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, obtain It takes temperature regulatory demand power P 1 and temperature to adjust the difference power between actual power P2, and is increased according to difference power for partly leading The heating power of body heat exchange module；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, protect The heating power for holding semiconductor heat exchange module is constant.
According to one embodiment of present invention, battery thermal management module includes the pump being arranged on heat exchange flow path, the first temperature Sensor, second temperature sensor and flow sensor are spent, pump, the first temperature sensor, second temperature sensor and flow velocity pass Sensor is connect with controller；Wherein: pumping for making the media flow in heat exchange flow path；First temperature sensor is flowed into for detecting The inlet temperature of the medium of on-vehicle battery；Second temperature sensor is used to detect the outlet temperature of the medium of outflow on-vehicle battery； Flow sensor is used to detect the flow velocity of the medium in heat exchange flow path, the method also includes: if temperature regulatory demand power P1 is greater than temperature and adjusts actual power P2, then the revolving speed of increasing pump.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery is less than or waits In P2, then the revolving speed for controlling pump reduces, and to save electric energy, or keeps the revolving speed of pump constant.And if the P1 of battery is greater than P2, Except the power of the refrigeration work consumption of control on-board air conditioner, the aperture increase of the first regulating valve, semiconductor heat exchange module or heater Outside, the revolving speed that can also control pump improves, to increase the mass of medium for flowing through cooling flowing path cross-sectional area in the unit time, thus The temperature for improving battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
Further, as shown in Fig. 1 a-1b and Fig. 2 a-2b, battery thermal management module further includes heater, and heater is used for Medium in heating heat exchange flow path carries out battery 4 by semiconductor heating module 3 and heater 11 when for heating mode Heating.
Specifically, when working in heating mode, the P1 and P2 of battery are obtained, and judged.If the P1 of battery is big In P2, illustrate to obtain if the heating of battery can not be completed within the object time according to current heating power battery P1 and Difference power between P2, and according to difference power increase heater and/or the power of semiconductor heat exchange module, wherein P1's and P2 Difference power is bigger, and the power increase of heater and/or semiconductor heat exchange module is more, so that the temperature of battery 4 is in preset time t Inside it is increased to target temperature.And if P1 is less than or equal to P2, it can reduce the heating of heater and/or semiconductor heat exchange module Power is to save electric energy, or keeps the power of heater and/or semiconductor heat exchange module constant.When the temperature of battery reaches second Set temperature, such as at 10 DEG C, then battery heating is completed, control heater stopping is heated.If humidity control system into After entering the heating mode long period, such as after 2 hours, the temperature of battery still is below 10 DEG C, then suitably increases the function of heater Rate, so that battery is completed to heat up as early as possible.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, by the temperature regulatory demand function for obtaining battery Rate, then the temperature adjusting actual power of battery is obtained, actual power pair is finally adjusted according to temperature regulatory demand power and temperature The power of semiconductor heat exchange module and/or on-board air conditioner is adjusted.This method can be excessively high in on-vehicle battery temperature as a result, When, battery temperature is adjusted according to the actual state of on-vehicle battery, so that the temperature of on-vehicle battery is maintained preset range, keeps away Exempt from that there is a situation where due to the excessively high influence on-vehicle battery performance of temperature.
The invention also provides a kind of non-transitorycomputer readable storage mediums, are stored thereon with computer program, should Above-mentioned temperature control method is realized when program is executed by processor.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, by the temperature regulatory demand function for obtaining battery Rate, then the temperature adjusting actual power of battery is obtained, actual power pair is finally adjusted according to temperature regulatory demand power and temperature The power of semiconductor heat exchange module and/or on-board air conditioner is adjusted, so as to on-vehicle battery when the temperature is excessively high, according to vehicle Carry battery actual state battery temperature is adjusted, so that the temperature of on-vehicle battery is maintained preset range, avoid occur by In the temperature excessively high influence on-vehicle battery performance the case where.
Fig. 7 is the structural schematic diagram of the humidity control system of the on-vehicle battery of the 5th embodiment according to the present invention.Such as Fig. 7 Shown, which includes: compressor 11, evaporator 12,3 and of battery thermal management module 1, heat exchanger 2 and semiconductor heat exchange module Controller (not specifically illustrated in figure).
Wherein, there is the first air duct 100, the first air duct 100 includes the first regulating valve between heat exchanger 2 and air-conditioner air outlet 51 and first blower 501.
Evaporator 12 is connected with compressor 11.Battery thermal management module 1 is connected with battery 4.Heat exchanger 2 and battery thermal management Module 1 is connected, and heat exchanger 2 is correspondingly arranged by the first regulating valve 51 and the first blower 501 with air-conditioner wind air outlet.Semiconductor changes Thermal modules 3 are used to freeze for evaporator 12.Battery thermal management module 1 connect formation heat exchange flow path with heat exchanger 2.Semiconductor heat exchange Module 3 includes colling end and fire end, and colling end is connect with evaporator 12, for freezing for evaporator 12.Controller is for obtaining The temperature regulatory demand power P 1 and temperature for stating battery adjust actual power P2, and according to temperature regulatory demand power P 1 and temperature Actual power P2 is adjusted the refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 11 is adjusted.
As shown in fig. 7,3 colling end of conductor heat exchange module is connected by pipeline and evaporator 12, evaporator 12 is exported Even the entrance of colling end, 12 entrance of evaporator connect the outlet of colling end, as shown in Figure 8 a-8b, 3 cooling of conductor heat exchange module End can also connect with evaporator 12.
As shown in Fig. 7 and Fig. 8 a-8b, on-vehicle battery humidity control system further includes the third being correspondingly arranged with evaporator 12 Blower 503 has third air duct 300 between third blower 503 and air-conditioner air outlet.On-vehicle battery humidity control system can be with Including the heat exchange blower fan 301 being connected with the fire end of semiconductor heat exchange module, the air draft to outside compartment of heat exchange blower fan 301.
Specifically, semiconductor mold changing block 3 has fire end and colling end, and the fire end of semiconductor heat exchange module 3 is equipped with Heat exchange blower fan 301, to the air draft to outside compartment.
As shown in fig. 7, on-board air conditioner refrigeration work consumption source is mainly by compressing when colling end is arranged on evaporator 12 Machine 11 and semiconductor heat exchange module 3 provide, wherein compression mechanism cold loop are as follows: the 13-the first electronic valve of 11-condenser of compressor 14-the first 15-evaporator of expansion valve, 12-compressor 11, after refrigerant flows through evaporator 12, the decline of 12 temperature of evaporator, refrigerant Temperature rises.Semiconductor heat exchange module refrigerating circuit are as follows: semiconductor heat exchange module 3 (colling end)-12-semiconductor of evaporator changes Thermal modules (colling end), after refrigerant flows through evaporator 12, temperature is increased, and the colling end of semiconductor heat exchange module is by part After refrigerant is cooling, evaporator 12 is flowed anew through, so that 12 temperature of evaporator declines.
After evaporator 12, temperature reduces in-vehicle air, and cooling wind blows to air-conditioner air outlet by third blower 503, Heat exchanger 2 is blowed to by the first blower 501 again, to be cooled down to the medium in cooling pipe, so that battery 4 is cooled down, Heat exchange blower fan 301 blows to the heat of fire end outside vehicle simultaneously.When battery refrigerating function does not start, the first regulating valve 51 is closed It closes.When the starting of battery refrigerating function, the first regulating valve 51 is opened.First expansion valve 15, which can be used for controlling, flows into the cold of evaporator The flow of matchmaker, the first electronic valve 14 can be used for controlling the opening and closing of compression mechanism cold loop.
In one embodiment of the invention, the colling end of semiconductor heat exchange module and the heat exchanger are connected in institute in parallel State the cooling branch road of battery, wherein the evaporator outlet connects the entrance of the colling end, and the evaporator inlet connects institute State the outlet of colling end.The cooling branch road of the battery is connected in series in the colling end of semiconductor heat exchange module and the heat exchanger, Wherein, the entrance of the colling end of the semiconductor heat exchange module is connected with the outlet of the first expansion valve, the semiconductor heat exchange mould The outlet of the colling end of block is connected with the entrance of the evaporator, alternatively, the entrance of the colling end of the semiconductor heat exchange module It is connected with the outlet of evaporator, the outlet of the colling end of the semiconductor heat exchange module is connected with the entrance of the compressor.
As shown in Figure 8 a-8b, when colling end is connected with evaporator 12, as shown in Figure 8 a, semiconductor heat exchange module 3 can be with It being connected between the first expansion valve 15 and evaporator 12, the colling end of semiconductor heat exchange module 3 is directly connected in coolant loop, After refrigerant first passes through colling end cooling, temperature decline, using evaporator 12, so that the cooling power of compression mechanism cold loop is more It is high.As shown in Figure 8 b, semiconductor heat exchange module 3 can also be between concatenated evaporator 12 and compressor 11, and colling end is directly accessed Into coolant loop, refrigerant first passes through evaporator 12, so that refrigerant temperature increases, then colling end is being flowed through, so that refrigerant temperature Degree decline, improves the refrigeration work consumption of air-conditioning system.
It is carried out in cooling procedure to battery, controller also obtains the temperature regulatory demand power P 1 and temperature of battery in real time Adjust actual power P2, wherein the temperature of battery is adjusted to setting within the object time by temperature regulatory demand power P 1 Target temperature, it is desirable to provide to the power of battery 4, battery temperature adjusts actual power P2 and currently carries out temperature adjusting to battery When, the actual power that battery 4 obtains, target temperature and object time are setting value, can be according to the actual conditions of on-vehicle battery It is preset, for example, target temperature can be set at 35 DEG C or so, and the object time can be set as 1 when cooling down to battery Hour.Controller can be adjusted according to power of the P1 and P2 to semiconductor heat exchange module 3 and/or compressor 11, so that battery 4 can complete temperature adjusting within the object time, so that the temperature of on-vehicle battery is maintained preset range, avoid occurring due to temperature The case where excessively high influence on-vehicle battery performance.
On-board air conditioner and semiconductor heat exchange module 3 can also be provided except that can provide refrigeration work consumption for battery cooling for compartment Refrigeration work consumption.
According to one embodiment of present invention, specific between air-conditioner wind air outlet and compartment as shown in Fig. 7 and Fig. 8 a-8b Second air duct 200, the second regulating valve 52 and the second blower 502 being connected with the second regulating valve 52 that the second air duct 200 includes, Second blower 502 is for freezing to compartment.
Specifically, the first regulating valve 51 can be used for controlling the cooling intake of the cooling branch of battery.Second regulating valve 52 can For controlling the cooling intake of interior cooling branch.When the starting of battery refrigerating function, the first regulating valve 51 is opened, interior empty After evaporator 12, temperature reduces gas, and cooling wind blows to air-conditioner air outlet by third blower 503, then by the first blower 501 Heat exchanger 2 is blowed to, to cool down to the medium changed in hot flowpath, to cool down to battery 4, while heat exchange blower fan 301 The heat of fire end is blowed to outside vehicle.When needing to freeze in compartment, the second regulating valve 52 is opened, and the second blower 502 is by air-conditioning The cooling wind of air outlet blows to compartment, to provide refrigeration work consumption for compartment.
In an embodiment of the present invention, as shown in Fig. 7 and Fig. 8 a-8b, battery thermal management module 1 may include: that setting exists Pump 12, the first temperature sensor 14, second temperature sensor 15 and the flow sensor 16 to exchange heat on flow path, the 12, first temperature of pump Degree sensor 14, second temperature sensor 15 and flow sensor 16 are connect with controller；Wherein: pump 12 be used to provide power with Make the media flow in heat exchange flow path；First temperature sensor 14 is used to detect the inlet temperature for the medium for flowing into on-vehicle battery； Second temperature sensor 15 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 16 is for detecting heat exchange The flow velocity of medium in flow path.
Further, battery thermal management module 1 can also include the media Containers 13 being arranged on heat exchange flow path, and medium holds Device 13 is for storing and providing medium to heat exchange flow path.Battery thermal management module 1 can also include: heater 11, heater 11 It is connect with controller, for heating the medium in heat exchange flow path.
Heater 11 can (Positive Temperature Coefficient, positive temperature coefficient refer to for PTC Positive temperature coefficient very big semiconductor material or component) heater, to carry out CAN communication with battery thermal management controller, There is provided heating power for the humidity control system of on-vehicle battery, controlled by battery thermal management controller, heater 11 it is not direct with Battery 4 contacts, safety with higher, dependable with function.
According to one embodiment of present invention, controller is also used to obtain the temperature of battery, and judges that the temperature of battery is It is no to be greater than the first temperature threshold or be less than second temperature threshold value, wherein when the temperature of battery is greater than the first temperature threshold, into Enter refrigerating mode；When the temperature of battery is less than second temperature threshold value, into heating mode, the first temperature threshold is greater than the second temperature Spend threshold value.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the first temperature Threshold value can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
After vehicle powers on, battery manager obtains the temperature of battery in real time, and is sent to on-board air conditioner controller and carries out The temperature information of battery can also be transmitted to battery thermal management controller by judgement, on-board air conditioner controller.
If it is determined that the temperature of battery is higher than 40 DEG C, illustrate that the temperature of the battery 4 at this time is excessively high, to avoid high temperature to the electricity The performance in pond 4 has an impact, and needs to carry out battery 4 cooling processing, and humidity control system enters refrigerating mode, on-board air conditioner control Device control the first regulating valve 51 of control processed is opened, the medium flow direction to exchange heat in flow path are as follows: 2-heater of heat exchanger 11 (closing)- Pump the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-16-media Containers of flow sensor 13- Heat exchanger 2；
And if the temperature of battery 4 is lower than 0 DEG C, illustrate that the temperature of battery 4 at this time is too low, to avoid low temperature to battery 4 Performance has an impact, and needs to carry out battery 4 heating treatment, and humidity control system enters heating mode, battery thermal management control Device controls heater 11 and opens, while on-board air conditioner controller keeps the first regulating valve 51 to be in close state, medium flow direction are as follows: Heater 11 (unlatching)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16-13-heat exchanger of media Containers, 2-heaters 11 (unlatching).
The temperature regulatory demand power P 1 and temperature how controller obtains battery are described below with reference to specific embodiment Adjust actual power P2.
According to one embodiment of present invention, controller can be used for obtaining the first ginseng when battery opening temperature is adjusted Number, and the first temperature regulatory demand power of battery is generated according to the first parameter, and obtain the of battery when temperature is adjusted Two parameters, and adjusted according to the second temperature regulatory demand power of the second parameter generation battery, and according to the first temperature of battery The temperature regulatory demand power P 1 of the second temperature regulatory demand power of demand power and battery generation battery.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 4 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature are obtained between initial temperature and target temperature The first temperature difference Δ T1, and according to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, the first temperature regulatory demand power is generated by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 4 Specific heat capacity, M are the quality of battery 4.
Second parameter is the average current I of battery 4 within a preset time, and battery thermal management module 1 passes through following formula (2) Generate second temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 4.
Specifically, can by current Hall sensor detect battery 4 charging and discharging currents parameter battery manager can root According to the current parameters of battery 4 in a period of time, the average current of battery 4 is estimated.
When being cooled down to battery 4, P1=Δ T1*C*M/t+I2*R；When being heated to battery 4, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, the inlet temperature and that controller is detected also according to the first temperature sensor 14 The outlet temperature of two temperature sensors 15 detection generates second temperature difference Δ T2, and according to the second temperature difference Δ T of each battery2 Actual power P2 is adjusted with the flow velocity v that flow sensor 16 the detects temperature for generating battery.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
Specifically, after vehicle powers on, battery manager judges whether battery 4 needs to carry out temperature tune according to battery temperature Section then sends opening temperature by the gas that CAN communication goes into operation to on-board air conditioner and adjusts if it is determined that battery 4 needs temperature to adjust The information of function, on-board air conditioner controller forward this information to battery thermal management controller, the control of battery thermal management controller Pump 12 is to default revolving speed (such as slow-speed of revolution) start-up operation.
Then, battery manager obtains the initial temperature (i.e. Current Temperatures) of battery 4, target temperature and reaches from initial temperature To the object time t of target temperature, wherein target temperature and object time t can be preset according to the actual situation, and according to Formula (1) calculates the first temperature regulatory demand power of battery 4.Meanwhile battery manager obtains battery 4 within a preset time Average current I, and according to formula (2) calculate battery 4 second temperature regulatory demand power.Then, battery manager according to The the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 of battery 4 (i.e. will The temperature of battery 4 is adjusted to the demand power of target temperature within the object time), wherein when being cooled down to battery 4, P1 =Δ T1*C*M/t+I2* R, when being heated to battery 4, P1=Δ T1*C*M/t-I2*R.Also, battery thermal management controls Device obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains the inspection of flow sensor 16 The flow rate information of survey adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.Finally, controller can be according to electricity P1, the P2 in pond 4 are adjusted by the power of control semiconductor heat exchange module 3 or heater 11 or on-board air conditioner (compressor) It saves accurately to control heating power/refrigeration work consumption of battery 4.
It is appreciated that as shown in figure 9, on-board air conditioner controller also with compression mechatronics, to control compressor, Also, on-board air conditioner controller can be to first to third blower 501-503 revolving speed, each regulating valve, electronic valve and expansion valve It is controlled.
Below with reference to specific embodiment description how according to temperature regulatory demand power P 1 and temperature adjusting actual power The power of semiconductor heat exchange module and/or compressor is adjusted in P2.
According to one embodiment of present invention, according to one embodiment of present invention, when for refrigerating mode, controller exists When temperature regulatory demand power P 1 is greater than temperature adjusting actual power P2, obtains temperature regulatory demand power P 1 and temperature is adjusted in fact Difference power between border power P 2, and increase according to difference power the refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 11, And temperature regulatory demand power P 1 be less than or equal to temperature adjust actual power P2 when, reduce semiconductor heat exchange module 3 and/ Or the refrigeration work consumption of compressor 11, or keep the refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 11 constant.
Further, controller is greater than temperature adjusting actual power P2, and battery in the temperature regulatory demand power P 1 Temperature be greater than the first preset temperature threshold when, control semiconductor heat exchange module 3 with full refrigeration work consumption operation.Wherein, first is pre- If temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.And if temperature regulatory demand power P 1 is big Actual power P2 is adjusted in temperature, and the temperature of battery is less than the first preset temperature threshold, temperature is not also in compartment for controller Increase by 3 refrigeration work consumption of semiconductor heat exchange module when reaching air-conditioning set temperature.
It is greater than temperature in temperature regulatory demand power P 1 and adjusts practical function P2, and the temperature of battery is greater than the first preset temperature When threshold value, controller also increases the aperture of the first regulating valve 51, while reducing the aperture of the second regulating valve 52.Specifically, with Fig. 7 Shown in for scheme, if on-board air conditioner controller receives the battery refrigerating function starting information of battery manager transmission, The starting of battery refrigerating function, on-board air conditioner controller send battery refrigerating function starting information to battery thermal management controller and half Conductor controller.On-board air conditioner controller receives the temperature regulatory demand power P 1 for the battery that battery manager is sent, and this Information is transmitted to battery thermal management controller and semiconductor changer controller while controlling the first regulating valve 51 and opens.It is cooling in battery In the process, the temperature that on-board air conditioner controller receives water temperature information and battery that battery thermal management controller is sent adjusts practical function Rate P2, and the information is transmitted to battery manager and semiconductor control.In battery cooling procedure, on-board air conditioner controller The temperature regulatory demand power P 1 of control cell and the temperature actual power P2 information of battery, if temperature regulatory demand power P 1 Greater than temperature actual power P2, then judge whether the temperature of battery reaches 45 DEG C (higher temperatures), if the temperature of battery reaches 45 DEG C, then on-board air conditioner reduces the aperture of the second regulating valve 52, increases the aperture of the first regulating valve 61, reduces interior cooling airflow Amount increases the cooling wind flow of the cooling branch of battery, to adjust the cooling and interior cooling refrigerating capacity distribution of battery, meanwhile, half Conductor controller controls semiconductor heat exchange module 3 with the operation of full refrigeration work consumption, i.e., maximum refrigeration work consumption operation is interior cold to alleviate But coolant quantity reduces the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high rotary speed working.If The temperature of battery is not higher than 45 DEG C, then judges whether the temperature in compartment reaches air-conditioning set temperature, if reached, vehicle-mounted sky It adjusts controller to reduce the aperture of the second regulating valve 52, increases the aperture of the first regulating valve 51, if the temperature in compartment does not reach To air-conditioning set temperature, then preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 and temperature are adjusted real at this time Difference portion cooling power between border power P 2, is provided by semiconductor heat exchange module 3.In battery refrigerating function opening process In, on-board air conditioner controller monitors the real-time cooling power letter of the practical cooling power of battery pack and semiconductor heat exchange module in real time Breath, and according to interior cooling power demand and battery pack cooling power demand information, determine that the first regulating valve 51 and second is adjusted Aperture between valve 52, so as to the cooling air quantity distribution of the cooling and interior cooling branch of regulating cell, so that on-board air conditioner provides Battery cooling wind circuit refrigeration work consumption plus semiconductor heat exchange module 3 cooling power be equal to battery temperature regulatory demand Power P 1.In battery cooling procedure, if on-board air conditioner receives the cooling completion information of battery of battery manager transmission, i.e., The temperature of battery reaches 35 DEG C, then the cooling information of completing of on-board air conditioner controller forwarding battery gives battery thermal management controller, electricity Pond is cooling to complete.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, on-board air conditioner preferentially meets the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2 When, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, on-board air conditioner can reduce the cooling power of compressor or semiconductor changes Thermal modules 3 reduce refrigeration work consumption, to save electric energy, or keep the refrigeration work consumption of compressor and semiconductor heat exchange module 3 constant.
According to one embodiment of present invention, when for heating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, And the power for heating the heater 11 of battery is increased according to difference power, and be less than or wait in temperature regulatory demand power P 1 When temperature adjusts actual power P2, keep the power of heater 11 constant.
Further, when for heating mode, battery 4 is heated by heater 11.
Specifically, when work is in heating mode, controller obtains the P1 and P2 of battery 4, and is judged.If battery 4 P1 is greater than P2, illustrates if can not complete the heating of battery 4 within the object time according to current heating power, battery heat Management module 1 obtains the difference power between the P1 and P2 of battery 4, and increases the power of heater 11 according to difference power, wherein P1 Bigger with the difference power of P2, the power increase of heater 11 is more, so that the temperature of battery 4 is increased to mesh in preset time t Mark temperature.And if P1 is less than or equal to P2, it can reduce the heating power of heater 11 to save electric energy, or keep heater 11 power is constant.When the temperature of battery reaches the second set temperature, such as at 10 DEG C, then the heating of battery 4 is completed, control heating The stopping of device 11 is heated.After if humidity control system entered the heating mode long period, such as after 2 hours, the temperature of battery 4 Degree still is below 10 DEG C, then suitably increases the power of heater 11, so that battery 4 completes heating as early as possible.
Further, according to one embodiment of present invention, controller be also used to be less than in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, the revolving speed of reduction pump 12 or the revolving speed of holding pump 12 are constant, and adjusting in temperature need to When power P 1 being asked to be greater than temperature adjusting actual power P2, the revolving speed of pump 12 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery 4 is less than or waits In P2, the revolving speed that controller then controls pump 12 is reduced, and to save electric energy, or keeps the revolving speed of pump 12 constant.And if battery 4 P1 be greater than P2, can also control pump 12 revolving speed improve, to increase Jie for flowing through cooling flowing path cross-sectional area in the unit time Matter quality, so that the temperature for improving battery 4 adjusts actual power P2, to realize that temperature is adjusted in object time t.
Specifically adjusting for the battery temperature of system shown in Fig. 7 and Fig. 8 a-8b is described below with reference to specifically embodiment Journey.
1, when cooling when being cooled down to battery
The cooling power that the cooling power and semiconductor heat exchange module that cooling power is provided by compressor of air conditioner provide.Pressure By cooling down to refrigerant, refrigerant declines evaporator temperature after evaporator for contracting machine and semiconductor heat exchange module, and Air-conditioning is cooled down into wind into heat exchanger 2 or compartment by third blower, battery and compartment are cooled down respectively.
The cooling power of the cooling branch of battery is the cooling function that the air-conditioning cooling wind of heat exchanger 2 is blown over by the first regulating valve The cooling power of rate, the cooling branch of car is that the cooling power of the air-conditioning cooling wind in compartment is blowed to by the second regulating valve.
(1) battery is cooling distributes with interior cooling initial power
If battery cooling requirement power is P1, the practical cooling power of battery is P2, and P3 is the maximum of semiconductor heat exchange module Cooling power, P6 are interior cooling power, and P7 is compressor maximum cooling power.
When the sum of power of battery cooling requirement power P 1 and interior cooling requirement power P 6≤cooling function of compressor maximum Rate P7, i.e. P1+P6≤P7, and P1 < P7, P6 < P7, then compressor is run according to P1+P6 refrigeration work consumption.Control second is adjusted simultaneously The aperture of valve is saved, so that interior cooling power is P6.The aperture of the first regulating valve is controlled, so that battery cooling power is P1.
As P7 < P1+P6≤P7+P3, Pe=P1+P6-P7, Pf=P1+P6-P3, then compressor is according to maximum refrigeration work consumption P7 operation, semiconductor heat exchange module are run according to cooling power Pe.The cooling power of the cooling branch of battery is P1, the cooling branch of car Road power=P6.Or semiconductor heat exchange module is run according to the cooling power P 3 of maximum, compressor is transported according to cooling power Pf Row.The aperture of the second regulating valve is controlled simultaneously, so that interior cooling power is P6, the aperture of the first regulating valve is controlled, so that electric Pond cooling power is P1.
As P1+P6 > P7+P3, then judge whether battery temperature is greater than 45 DEG C, is then preferably that battery is cold if it is greater than 45 DEG C But cooling power is provided, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to the cooling power P 3 of maximum Operation, while improving heat exchange blower fan revolving speed.Increase the aperture of the first regulating valve, the revolving speed of the first blower is improved, so that battery is cold But the cooling power of branch is P1, reduces the aperture of the second regulating valve, so that interior cooling branch power=P7+P3-P1.If Determine that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, is then preferably interior offer cooling power, pressure Contracting machine is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange Rotation speed of fan.Increase the aperture of the second regulating valve, improve the revolving speed of the second blower, so that the cooling power of interior cooling branch is P6 reduces the aperture of the second regulating valve, so that cooling power=P7+P3-P6 of the cooling branch of battery.If vehicle interior temperature is Reach set temperature, then preferentially meets the cooling power of battery.The revolution speed in battery cooling circuit can also be improved simultaneously, mentioned High heat exchange power.
(2) power distribution in battery cooling procedure
If P1 > P2, and Pc=P1-P2, P1+P6+Pc < P7, then compressor increases refrigeration work consumption Pc, while increasing the The aperture of one regulating valve improves the revolving speed of the first blower, heat exchange blower fan and pump, to improve battery cooling power.
If P1 > P2, and Pc=P1-P2, P7 < P1+P6+Pc≤P7+P3, Pg=P1+P6+Pc-P7, Ph=
P1+P6+Pc-P3, then compressor is run according to maximum refrigeration work consumption P7, and semiconductor takes a breath module according to cooling power Pg operation.Or compressor is run according to refrigeration work consumption Ph, semiconductor takes a breath module according to the cooling operation of power P 3 of maximum.And or Person's compressor is run according to the cooling power P 7 of maximum, and semiconductor heat exchange module increases cooling power Pc.Or compressor increases Cooling power Pc, semiconductor heat exchange module are run according to the cooling power P 3 of maximum.Or be that compressor cooling power is constant, half The cooling power of conductor heat exchange module increases Pc.Or compressor cooling power increases Pc, the cooling of semiconductor heat exchange module Power is constant.Or compressor cooling power increases 0.5*Pc, semiconductor heat exchange module cooling power increases 0.5Pc.And or Person respectively proportionally increases cooling power according to the ratio of the maximum cooling power of compressor and semiconductor heat exchange module.Simultaneously Increase the aperture of the first regulating valve, improve the revolving speed of the first blower, heat exchange blower fan and pump, so that the cooling function of the cooling branch of battery Rate increases Pc.
If P1 > P2, Pc=P1-P2, and P1+P6+Pc > P7+P3, then compressor is transported according to the cooling power P 7 of maximum Row, while semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving rotation speed of fan, battery thermal management heat exchange mould Block improves revolution speed, to improve heat exchange power.At this point, judging whether battery temperature is greater than 45 DEG C, if it is greater than 45 DEG C, then preferentially Cooling power is provided for battery cooling, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to maximum cold But power P 3 is run, while improving rotation speed of fan.Increase the aperture of the first regulating valve, the revolving speed of the first blower is improved, so that electric The cooling power of the cooling branch in pond is P1+Pc, reduces the aperture of the second regulating valve, the revolving speed of the second blower is improved, so that interior Cooling branch power=P7+P3-P1-Pc, while revolution speed raising is controlled, heat exchange blower fan revolving speed improves, so that the cooling branch of battery The cooling power on road increases Pc.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then excellent Cooling power first is provided for car, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is cooling according to maximum Power P 3 is run, while improving heat exchange blower fan revolving speed.Increase the aperture of the second regulating valve, improves the revolving speed of the second blower, so that The cooling power of the cooling branch of car is P6, reduces the aperture of the first regulating valve, so that the cooling power of the cooling branch of battery= P7+P3-P6.If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery.
If P1≤P2, and Pc=P2-P1 then maintain compressor refrigeration power constant, semiconductor refrigerating power is maintained not Become, or reduce the refrigeration work consumption of compressor, reduces the cooling power of semiconductor heat exchange module, or reduce by the first regulating valve Aperture, or the revolving speed of the first blower, heat exchange blower fan and pump is reduced, so that the cooling power decline of the cooling duplexure of battery Pc。
2, when being heated to battery
When battery heating function is opened, semiconductor heat exchange module does not work.
The heating power of battery heating circuit is by flowing through ptc heater and making the raised heating function of medium temperature Rate.
(1) set battery demand for heat power as P1, the practical heating power of battery is P2, P5 be ptc heater most greatly Thermal power.
If P1≤P5, ptc heater provides heating power according to heating power P1 for battery.
If P1 > P5, ptc heater provides heating power, while battery heat according to maximum heating power P 5 for battery It manages heat exchange module and improves revolution speed, to improve heat exchange power.
(2) in heating process, if P1≤P2, and Pc=P2-P1, then ptc heater heating power reduces Pc, while electricity Pond heat management heat exchange module reduces revolution speed, to save electric energy, or keeps current heating power constant.
During heating, if when P1 > P2, Pc=P1-P2, and P1+Pc≤P5, then ptc heater increases heating function Rate Pc, while battery thermal management module control revolution speed improves, to improve battery heating power.
If P1 > P2, Pc=P1-P2, and P5 < P1+Pc, then ptc heater is run according to maximum heating power P 5, electricity Pond heat management heat exchange module improves revolution speed, to improve heat exchange power.
The humidity control system of on-vehicle battery according to an embodiment of the present invention is adjusted by the temperature that controller obtains battery Demand power and temperature adjust actual power, and adjust actual power according to temperature regulatory demand power and temperature and change semiconductor The power of thermal modules and/or compressor is adjusted.Thus, it is possible to when on-vehicle battery is too high or too low for temperature, according to vehicle-mounted Battery temperature is adjusted in the actual state of battery, and the temperature of on-vehicle battery is made to maintain preset range, avoid occur due to The case where influence on-vehicle battery performance too high or too low for temperature.
Figure 10 is the flow chart of the temperature control method of the on-vehicle battery of the 5th embodiment according to the present invention.Wherein, such as Shown in Fig. 7, on-vehicle battery humidity control system includes heat exchanger, has the first air duct between heat exchanger and air-conditioner air outlet, the One air duct includes the first regulating valve and the first blower；Battery thermal management module；Battery thermal management module connect to be formed with heat exchanger Exchange heat flow path；Compressor and evaporator；Semiconductor heat exchange module, the semiconductor heat exchange module include colling end and fire end, Colling end is connect with evaporator, for being evaporator refrigeration；As shown in Figure 10, the temperature control method of on-vehicle battery includes following Step:
S1 ' obtains the temperature regulatory demand power P 1 of battery.
Further, according to one embodiment of present invention, the temperature regulatory demand power P 1 for obtaining battery specifically includes: The first parameter when the opening temperature adjusting of battery is obtained, and generates the first temperature regulatory demand function of battery according to the first parameter Rate.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand function of battery according to the second parameter Rate.The temperature tune of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Save demand power P1.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate battery according to the first parameter The first temperature regulatory demand power specifically include: obtain the first temperature difference Δ T between initial temperature and target temperature1.Root According to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, is passed through The second temperature regulatory demand power of following formula (2) generation battery:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
Wherein, when being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C*M/t-I2*R。
S2 ', the temperature for obtaining battery adjust actual power P2.
According to one embodiment of present invention, the temperature for obtaining battery adjusts actual power P2 and specifically includes: acquisition is used for The inlet temperature and outlet temperature of the flow path of regulating cell temperature, and obtain the flow velocity v that medium flow field enters flow path.According to the stream of battery The inlet temperature and outlet temperature on road generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2Temperature is generated with flow velocity v Degree adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
S3 ' adjusts actual power P2 to semiconductor heat exchange module and/or pressure according to temperature regulatory demand power P 1 and temperature The power of contracting machine is adjusted.
Further, in an embodiment of the present invention, as shown in fig. 7, semiconductor heat exchange module includes colling end and heating End, colling end are arranged on evaporator, and as shown in Figure 8 a-8b, colling end can also be with evaporator series.
As shown in Fig. 7 and Fig. 8 a-8b, on-vehicle battery humidity control system further includes the third blower being connected with evaporator, Third blower is arranged in air-conditioner wind air outlet.On-vehicle battery humidity control system can also include the heat exchange being connected with fire end Blower, heat exchange blower fan air draft to outside compartment.
Specifically, semiconductor mold changing block has fire end and colling end.The fire end of semiconductor heat exchange module, which is equipped with, to be changed Air-heater, to the air draft to outside compartment.
As shown in fig. 7, on-board air conditioner refrigeration work consumption source is mainly by compressor when colling end is arranged on evaporator It is provided with semiconductor heat exchange module, wherein compression mechanism cold loop are as follows: the first electronic valve-the first of compressor-condenser-is swollen Swollen valve-evaporator-compressor, after refrigerant flows through evaporator, evaporator temperature decline, refrigerant temperature rises.Semiconductor heat exchange Modular refrigeration circuit are as follows: semiconductor heat exchange module (colling end)-evaporator-semiconductor heat exchange module (colling end), refrigerant stream After pervaporation device, temperature is increased, and the colling end of semiconductor heat exchange module flows anew through steaming for after the cooling of part refrigerant Device is sent out, so that evaporator temperature declines.
After evaporator, temperature reduces in-vehicle air, and cooling wind blows to air-conditioner air outlet by third blower, then by the One blower blows to heat exchanger, to cool down to the medium in cooling pipe, to cool down to battery, while heat exchange blower fan The heat of fire end is blowed to outside vehicle.When battery refrigerating function does not start, the first regulating valve is closed.When battery refrigerating function opens First regulating valve is opened when dynamic.First expansion valve can be used for controlling the flow for flowing into the refrigerant of evaporator, and the first electronic valve is available In the opening and closing of control compression mechanism cold loop.
As shown in Figure 8 a-8b, when colling end and evaporator series, as shown in Figure 8 a, semiconductor heat exchange module can be gone here and there It is associated between the first expansion valve and evaporator, the colling end of semiconductor heat exchange module is directly connected in coolant loop, and refrigerant is first After colling end is cooling, temperature decline, using evaporator, so that the cooling power of compression mechanism cold loop is higher.Such as figure Shown in 8b, semiconductor heat exchange module can also be between concatenated evaporator and compressor, and colling end is directly connected in coolant loop, Refrigerant first passes through evaporator, so that refrigerant temperature increases, is then flowing through colling end, so that refrigerant temperature declines, improves sky The refrigeration work consumption of adjusting system.
It is carried out in cooling procedure to battery, the temperature regulatory demand power P 1 and temperature for also obtaining battery in real time adjust real Border power P 2, wherein temperature regulatory demand power P 1 is that the temperature of battery is adjusted to the target temperature of setting within the object time Degree, it is desirable to provide to the power of battery, it is battery when currently carrying out temperature adjusting to battery that battery temperature, which adjusts actual power P2, Obtained actual power, target temperature and object time are setting value, can be preset according to the actual conditions of on-vehicle battery, For example, target temperature can be set at 35 DEG C or so, and the object time can be set as 1 hour when cooling down to battery.So Afterwards, it can be adjusted according to power of the P1 and P2 to semiconductor heat exchange module and/or compressor, so that battery can be in target Temperature is completed in time to adjust, and so that the temperature of on-vehicle battery is maintained preset range, is avoided occurring due to the excessively high influence vehicle of temperature The case where carrying battery performance.
On-board air conditioner and semiconductor heat exchange module can also provide system except that can provide refrigeration work consumption for battery cooling for compartment Cold power.
According to one embodiment of present invention, as shown in Fig. 7 and Fig. 8 a-8b, on-vehicle battery humidity control system can be with It is used for including the second regulating valve being connected with air-conditioner wind air outlet and the second blower being connected with the second regulating valve, the second blower Freeze to compartment.
Specifically, the first regulating valve can be used for controlling the cooling intake of the cooling branch of battery.Second regulating valve 52 can be used In the cooling intake of the interior cooling branch of control.When the starting of battery refrigerating function, the first regulating valve is opened, in-vehicle air warp After pervaporation device, temperature is reduced, and cooling wind blows to air-conditioner air outlet by third blower, then blows to heat exchanger by the first blower, To be cooled down to the medium in cooling pipe, to be cooled down to battery 4, while heat exchange blower fan blows the heat of fire end To outside vehicle.When needing to freeze in compartment, the second regulating valve is opened, and the cooling wind of air-conditioner air outlet is blowed to vehicle by the second blower Compartment, to provide refrigeration work consumption for compartment.
In an embodiment of the present invention, as shown in Fig. 7 and Fig. 8 a-8b, battery thermal management module includes that setting is changed described Pump, the first temperature sensor, second temperature sensor and flow sensor on hot flowpath, pump, the first temperature sensor, second Temperature sensor and flow sensor are connect with controller；Wherein: pumping for making the media flow in heat exchange flow path；First temperature Sensor is used to detect the inlet temperature for the medium for flowing into on-vehicle battery；Second temperature sensor is for detecting outflow on-vehicle battery Medium outlet temperature；Flow sensor is used to detect the flow velocity of the medium in heat exchange flow path.
Further, battery thermal management module can also include that the media Containers being arranged on heat exchange flow path state media Containers For storing and providing medium to heat exchange flow path.Battery thermal management module can also include heater, for heating heat exchange flow path In medium.
Specifically, shown in shown in Fig. 7 and Fig. 8 a-8b, medium is cooled down except semiconductor heat exchange module can be passed through, may be used also Medium is heated by heater, to carry out temperature adjusting to battery when battery temperature is lower.Heater can be PTC Heater provides heating power for battery, and heater is not direct to be contacted with battery, safety, reliability and reality with higher The property used.Pump is mainly used for providing power, and media Containers are mainly used for storage medium and receive Jie added to humidity control system Matter, when the medium in cooling pipe is reduced, the medium in media Containers can be automatically replenished.First temperature sensor is to detect The temperature of cell flow entrance medium, temperature of the second temperature sensor to detect cell flow outlet medium.Flow-velocity sensing Flow rate information of the device to detect pipeline internal medium in humidity control system.
According to one embodiment of present invention, above-mentioned temperature control method can also include: the temperature for obtaining battery, sentence Whether the temperature in power-off pond is greater than the first temperature threshold；When the temperature of battery is greater than the first temperature threshold, into refrigerating mode； When the temperature of battery is less than or equal to the first temperature threshold, continue to judge whether the temperature of battery is less than second temperature threshold value； When the temperature of battery is less than second temperature threshold value, into heating mode, wherein the first temperature threshold is greater than second temperature threshold Value.
Specifically, after vehicle powers on, the temperature of battery is obtained in real time, and is judged.If it is determined that the temperature of battery is high In 40 DEG C, illustrate that 4 temperature of battery is excessively high at this time, to avoid high temperature from having an impact the performance of the battery, need to battery into Row cooling processing, into refrigerating mode, control the first regulating valve 51 of control is opened, and the first blower is by the cooling wind of on-board air conditioner To heat exchanger, cooled down with the medium in cooling pipe in heat exchanging device, medium again through battery thermal management module to battery into Row cooling.
And if the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery at this time is too low, to avoid low temperature to the performance of electricity 4 It has an impact, needs to carry out heating treatment to battery, into heating mode, control heater 11 and open, while on-board air conditioner is protected The first regulating valve is held to be in close state.
According to one embodiment of present invention, when for refrigerating mode, according to temperature regulatory demand power P 1 and temperature tune The power of semiconductor heat exchange module and/or compressor, which is adjusted, in section actual power P2 specifically includes: judging that temperature is adjusted needs It asks power P 1 whether to be greater than temperature and adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2 then obtains the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and is increased according to difference power The power of semiconductor heat exchange module and/or compressor；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts reality Power P 2 then reduces the power of semiconductor heat exchange module and/or compressor or keeps semiconductor heat exchange module and/or compressor Power it is constant.
Further, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and root are obtained It is specifically included according to the power that difference power increases semiconductor heat exchange module: adjusting reality when temperature regulatory demand power P 1 is greater than temperature Power P 2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module and run with full refrigeration work consumption. Wherein, the first preset temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.
Actual power P2 is adjusted when temperature regulatory demand power P 1 is greater than temperature, and the temperature of battery is less than the first default temperature When spending threshold value, further judge whether temperature reaches air-conditioning set temperature in compartment；If not up to air-conditioning set temperature, increases Add the refrigeration work consumption of semiconductor heat exchange module.
As shown in Fig. 7 and Fig. 8 a-8b, between air-conditioner wind air outlet and compartment specific second air duct, and the second air duct includes the Two regulating valves and the second blower being connected with the second regulating valve, the second blower is for freezing to compartment, and the method is also It include: to be greater than temperature in temperature regulatory demand power P 1 to adjust actual power P2, and the temperature of battery is greater than the first preset temperature When threshold value, also increase the aperture of the first regulating valve, while reducing the aperture of the second regulating valve.
Specifically, in battery cooling procedure, the temperature regulatory demand power P 1 of control cell and the temperature of battery are practical 2 information of power P judges whether the temperature of battery reaches if temperature regulatory demand power P 1 is greater than temperature actual power P2 45 DEG C (higher temperature), if the temperature of battery reaches 45 DEG C, the aperture of the second regulating valve is reduced, increases the first regulating valve Aperture reduces interior cooling wind flow, increases the cooling wind flow of the cooling branch of battery, and to adjust, battery is cooling and car is cooling Refrigerating capacity distribution, while controlling semiconductor heat exchange module and run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, with alleviation The cooling coolant quantity of car reduces the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high rotary speed working. If the temperature of battery is not higher than 45 DEG C, judge whether the temperature in compartment reaches air-conditioning set temperature, if reached, reduces The aperture of second regulating valve increases the aperture of the first regulating valve, if the temperature in compartment does not reach air-conditioning set temperature, Preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 and temperature adjust the difference between actual power P2 at this time Part cooling power is provided by semiconductor heat exchange module.In battery refrigerating function opening process, real time monitoring battery pack is practical The real-time cooling power information of cooling power and semiconductor heat exchange module, and it is cooling according to interior cooling power demand and battery pack Power requirement information determines the aperture between the first regulating valve and the second regulating valve, so that regulating cell is cooling and car is cooling The cooling air quantity in circuit distributes, so that the refrigeration work consumption in the battery cooling wind circuit that on-board air conditioner provides is plus semiconductor heat exchange mould The cooling power of block is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if the temperature of battery reaches 35 DEG C, then battery is cooling completes.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, on-board air conditioner preferentially meets the cooling refrigeration capacity requirement of battery.In addition, when P1 is less than P2 When, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, it can reduce the refrigeration work consumption of semiconductor heat exchange module, to save electric energy, or Person keeps the refrigeration work consumption of semiconductor heat exchange module constant.
It is appreciated that the second regulating valve is closed if interior cooling is not opened, the second blower does not work.
According to one embodiment of present invention, actual power is adjusted half-and-half according to temperature regulatory demand power and the temperature The heating power of conductor heat exchange module, which is adjusted, to be specifically included: judging whether temperature regulatory demand power P 1 is greater than temperature and adjusts Actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, temperature regulatory demand function is obtained Rate P1 and temperature adjust the difference power between actual power P2, and increase the heating for being used for semiconductor heat exchange module according to difference power Power；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, semiconductor heat exchange module is kept Heating power it is constant.
Further, battery thermal management module includes heater, for heating the medium in heat exchange flow path, when for heated mould When formula, when for heating mode, battery is heated by semiconductor heating module and heater.
Specifically, when working in heating mode, the P1 and P2 of battery are obtained, and judged.If the P1 of battery is big In P2, illustrate to obtain if the heating of battery can not be completed within the object time according to current heating power battery P1 and Difference power between P2, and according to the power of difference power increase heater, wherein the difference power of P1 and P2 is bigger, heater Power increase is more, so that the temperature of battery 4 is increased to target temperature in preset time t.And if P1 is less than or equal to P2, The heating power of heater be can reduce to save electric energy, or keep heater power constant.When the temperature of battery reaches second Set temperature, such as at 10 DEG C, then battery heating is completed, control heater stopping is heated.If humidity control system into After entering the heating mode long period, such as after 2 hours, the temperature of battery still is below 10 DEG C, then suitably increases the function of heater Rate, so that battery is completed to heat up as early as possible.
In an embodiment of the present invention, when temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2, increase The revolving speed of heat exchange blower fan.
When humidity control system enters heating mode or refrigerating mode, if the P1 of battery is less than or equal to P2, The revolving speed of control pump reduces, and to save electric energy, or keeps the revolving speed of pump constant.And if the P1 of battery is greater than P2, except control Vehicle-mounted air conditioner compressor cooling power increases, the aperture of the first regulating valve increases, the function of semiconductor heat exchange module or heater Outside rate, the revolving speed that can also control pump is improved, to increase the mass of medium for flowing through cooling flowing path cross-sectional area in the unit time, from And the temperature for improving battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
The temperature control method of on-vehicle battery according to an embodiment of the present invention obtains the temperature regulatory demand function of battery first Rate, then the temperature adjusting actual power of battery is obtained, actual power pair is finally adjusted according to temperature regulatory demand power and temperature The power of semiconductor heat exchange module and/or compressor is adjusted.This method can or mistake excessively high in on-vehicle battery temperature as a result, When low, battery temperature is adjusted according to the actual state of on-vehicle battery, the temperature of on-vehicle battery is made to maintain preset range, Avoid that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
In addition, the present invention also proposes a kind of non-transitorycomputer readable storage medium, it is stored thereon with computer program, The program realizes above-mentioned temperature control method when being executed by processor.
The non-transitorycomputer readable storage medium of the embodiment of the present invention obtains the temperature regulatory demand function of battery first Rate, then the temperature adjusting actual power of battery is obtained, actual power pair is finally adjusted according to temperature regulatory demand power and temperature The power of the power of semiconductor heat exchange module and/or compressor is adjusted, so as to so that the temperature of on-vehicle battery maintains Preset range, avoids that there is a situation where due to the excessively high influence on-vehicle battery performance of temperature.
Figure 11 a-11b is the structural representation of the humidity control system of the on-vehicle battery of the 7th embodiment according to the present invention Figure.As shown in Figure 11 a-11b, the humidity control system of the on-vehicle battery includes: heat exchanger 2, compressor 11, condenser 13, electricity Pond thermal management module 1, semiconductor heat exchange module 3, controller (not specifically illustrated in figure).
Wherein, compressor 11 is connect with heat exchanger 2.Condenser 13 is connected with compressor 11.Battery thermal management module 1 with change The hot connection of device 2 forms heat exchange flow path.Semiconductor heat exchange module 3 include colling end, fire end and heat exchange blower fan 301, colling end or The one of them of fire end is connect with heat exchanger, for be the heat exchanger heating power/refrigeration work consumption, heat exchange blower fan 301 with The another one of colling end or fire end is connected, and heat exchange blower fan 301 is to the air draft to outside compartment.Control controller is changed with semiconductor respectively Thermal modules 3, compressor 11 and battery thermal road module 1 connect, for obtaining the temperature regulatory demand power P 1 and temperature of battery 4 Actual power P2 is adjusted, and actual power P2 is adjusted to semiconductor heat exchange module according to temperature regulatory demand power P 1 and temperature And/or the power of compressor is adjusted.
Further, in an embodiment of the present invention, as shown in Figure 11 a-11b, semiconductor heat exchange module 3 can with change Hot device is in parallel；As shown in Figure 12 a-1ab, semiconductor heat exchange module 3 can also be connected on heat exchanger 2 and battery thermal management module 1 Between.Semiconductor heat exchange module 3 further includes the heat exchange blower fan 301 being connected with colling end or fire end.
When cooling down to battery, as shown in fig. 11a, colling end can be in parallel with heat exchanger 2, as figure 12 a shows, cold But holding can also be connected between heat exchanger 2 and battery 4.When heating to battery, as shown in figure 11b, fire end can be with Heat exchanger 2 and battery 4 are in parallel, and as shown in Figure 12b, fire end can also be connected between heat exchanger 2 and battery thermal management module 1.
Specifically, semiconductor mold changing block 3 has fire end and colling end, after power supply reversal connection, fire end and cooling End position exchange.The fire end or colling end of semiconductor heat exchange module 3 are equipped with heat exchange blower fan 301, to the air draft to outside compartment. Heat exchanger 2 can be plate heat exchanger, and as shown in Figure 11 a-11b and 12a-12b, there are two roads for the tool of heat exchanger 2, wherein the first pipe Road is connected with compressor 11, and second pipe is connected with battery thermal management module 1, and what is flowed in first pipe is refrigerant, second pipe Middle stream is medium.
As shown in Figure 11 a-11b, when semiconductor heat exchange module 3 is in parallel with heat exchanger 2, if when battery 4 temperature compared with Gao Shi, such as when higher than 40 DEG C, the humidity control system of on-vehicle battery enters refrigerating mode, semiconductor heat exchange module 3, battery heat Management module 1 and on-board air conditioner are started to work, the positive power supply (Figure 11 a) of semiconductor heat exchange module 3, wherein battery cooling circuit Cooling power mainly has 2 sources, one of them is the compressor 11 of on-board air conditioner, and 11 refrigerant of compressor flows into heat exchanger 2, is Heat exchanger 2 provides cooling power, and medium flow field is after heat exchanger 2 in cooling pipe, medium temperature decline；The other is semiconductor Heat exchange module 3, the positive power supply of semiconductor heat exchange module 3, colling end accesses cooling pipe, directly cools down to medium, for electricity Pond is cooling to provide cooling power, while heat exchange blower fan 301 blows to the heat of fire end outside vehicle.
And if the temperature of battery is lower, such as less than 0 DEG C, the humidity control system of on-vehicle battery enters heating mode, Semiconductor heat exchange module 3 and battery thermal management module 1 are started to work, 3 reverse power supply of semiconductor heat exchange module, as shown in figure 11b, Fire end accesses cooling pipe, and fire end is begun to warm up, to heat to the medium in cooling pipe, to carry out to battery 4 Heating, while heat exchange blower fan 301 blows to the refrigerating capacity of colling end outside vehicle.
Such as Figure 12 a-12b, semiconductor heat exchange module 3 can also be connected between heat exchanger 2 and battery 4, pass through control half The power supply direction of conductor heat exchange module 3, can be completed the cooling/heating to medium, to add refrigeration work consumption/heating function to provide Rate completes the cooling/heating of battery.
In carrying out cooling/or heating process to battery, controller also obtains the temperature regulatory demand power of battery in real time P1 and temperature adjust actual power P2, wherein temperature regulatory demand power P 1 is to adjust the temperature of battery within the object time To the target temperature of setting, it is desirable to provide to the power of battery 4, battery temperature adjusts actual power P2 and currently carries out to battery When temperature is adjusted, the actual power that battery 4 obtains, target temperature and object time are setting value, can be according to on-vehicle battery Actual conditions are preset, for example, when cooling down to battery, target temperature be can be set at 35 DEG C or so, when to battery into When row heating, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Controller can be according to P1 and P2 The power of semiconductor heat exchange module 3 and/or compressor 11 is adjusted, so that battery 4 can complete temperature within the object time Degree is adjusted, and the temperature of on-vehicle battery is made to maintain preset range, avoids occurring due to influence on-vehicle battery too high or too low for temperature The case where performance.
Compressor 11 can also provide refrigeration work consumption except that can provide cooling power for battery 4 for compartment.
According to one embodiment of present invention, as shown in Figure 11 a-11b and Figure 12 a-12b, on-vehicle battery temperature adjusts system System further includes the cooling branch 20 of car being connected with compressor 11, and the cooling branch 20 of car includes evaporator 21, evaporator 21 with Compressor 11 is connected.
Specifically, compressor 11 and condenser 12 constitute air conditioner refrigerating branch 10.It is opened inside on-board air conditioner from condenser 12 Beginning is divided into 2 independent cooling branches, respectively interior cooling branch 20 and the cooling branch 30 of battery.The cooling branch 20 of car is main Refrigeration work consumption is provided for the space in compartment by evaporator 12, it is that battery 4 mentions that the cooling branch of battery, which mainly passes through heat exchanger 2, For refrigeration work consumption.Wherein the cooling power of the cooling branch of battery mainly has 2 sources, one of them is the refrigerant stream of compressor 11 Into heat exchanger 2, cooling power is provided for heat exchanger 2, the other is the colling end of semiconductor heat exchange module 3 carries out refrigeration as electricity The cooling branch in pond provides cooling power.
First electronic valve 14 and the second electronic valve 24 are respectively used to the cooling branch 30 of control battery and interior cooling branch 20 Open and close.First expansion valve 15 and the second expansion valve 25 can be respectively used to the cooling branch 30 of control battery and car is cooling Branch 20 and cold medium flux, to control the cooling power of the cooling branch 30 of battery and interior cooling branch 20 respectively.
When the starting of the refrigerating function of battery 4, there are 2 flow directions, the cooling branches 20 of car are as follows: compressor for refrigerant 11-12-compressors of condenser the 13-the second electronic valve 25-evaporator of the 24-the second expansion valve 11；Battery cools down branch 30 Are as follows: 11-condenser of compressor the 13-the first electronic valve 15-heat exchanger of the 14-the first expansion valve, 2-compressor 11.When battery is cold But when function does not start, the first electronic valve 14 is closed.When the starting of battery refrigerating function, the first electronic valve 14 is opened.If this When car do not need to freeze, then the second electronic valve 24 close.
In an embodiment of the present invention, as shown in Figure 11 a-11b and Figure 12 a-12b, battery thermal management module 1 be can wrap It includes: pump 12, the first temperature sensor 14, second temperature sensor 15 and flow sensor 16 on heat exchange flow path, pump is set 12, the first temperature sensor 14, second temperature sensor 15 and flow sensor 16 are connect with controller；Wherein: pump 12 is used for There is provided power so that heat exchange flow path in media flow；First temperature sensor 14 is used to detect the medium for flowing into on-vehicle battery Inlet temperature；Second temperature sensor 15 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 16 is used The flow velocity of medium in detection heat exchange flow path.
Further, battery thermal management module 1 can also include the media Containers 13 being arranged on heat exchange flow path, and medium holds Device 13 is for storing and providing medium to heat exchange flow path.Battery thermal management module 1 can also include: heater 11, heater 11 It is connect with controller, for heating the medium in heat exchange flow path.
It is appreciated that the humidity control system of on-vehicle battery is except can be by the fire end of semiconductor heat exchange module 3 to medium It is heated, medium can also be heated by heater 11, to carry out temperature tune to battery 4 when battery temperature is lower Section.Heater 11 can be ptc heater, be the temperature of on-vehicle battery to carry out CAN communication with battery thermal management controller Regulating system provide heating power, control by battery thermal management controller, heater 11 is not direct to be contacted with battery 4, with compared with High safety, dependable with function.Pump 12 is mainly used for providing power, and media Containers 13 are mainly used for storage medium and connect By the medium added to humidity control system, when the medium in humidity control system is reduced, the medium in media Containers 13 can It is automatically replenished.Temperature of first temperature sensor 14 to detect cell flow entrance medium, second temperature sensor 15 to Detect the temperature of cell flow outlet medium.Flow velocity of the flow sensor 16 to detect pipeline internal medium in humidity control system Information.
The temperature regulatory demand power P 1 and temperature tune how controller obtains battery 4 are described below with reference to specific example Save actual power P2.
According to one embodiment of present invention, controller can be used for obtaining the first ginseng when battery opening temperature is adjusted Number, and the first temperature regulatory demand power of battery is generated according to the first parameter, and obtain the of battery when temperature is adjusted Two parameters, and adjusted according to the second temperature regulatory demand power of the second parameter generation battery, and according to the first temperature of battery The temperature regulatory demand power P 1 of the second temperature regulatory demand power of demand power and battery generation battery.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 4 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature are obtained between initial temperature and target temperature The first temperature difference Δ T1, and according to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 4 Specific heat capacity, M are the quality of battery 4.
Second parameter is the average current I of battery 4 within a preset time, and battery thermal management module 1 passes through following formula (2) Generate second temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 4.
Specifically, can by current Hall sensor detect battery 4 charging and discharging currents parameter battery manager can root According to the current parameters of battery 4 in a period of time, the average current of battery 4 is estimated.
When being cooled down to battery 4, P1=Δ T1*C*M/t+I2*R；When being heated to battery 4, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, the inlet temperature and that controller is detected also according to the first temperature sensor 14 The outlet temperature of two temperature sensors 15 detection generates second temperature difference Δ T2, and according to the second temperature difference Δ T of each battery2 Actual power P2 is adjusted with the flow velocity v that flow sensor 16 the detects temperature for generating battery.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
Specifically, after vehicle powers on, battery manager judges whether battery 4 needs to carry out temperature tune according to battery temperature Section, if it is determined that battery 4 needs temperature to adjust, battery thermal management controller control pump 12 is to default revolving speed (such as slow-speed of revolution) beginning Work.
Then, battery manager obtains the initial temperature (i.e. Current Temperatures) of battery 4, target temperature and reaches from initial temperature To the object time t of target temperature, wherein target temperature and object time t can be preset according to the actual situation, and according to Formula (1) calculates the first temperature regulatory demand power of battery 4.Meanwhile battery manager obtains battery 4 within a preset time Average current I, and according to formula (2) calculate battery 4 second temperature regulatory demand power.Then, battery manager according to The the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 of battery 4 (i.e. will The temperature of battery 4 is adjusted to the demand power of target temperature within the object time), wherein when being cooled down to battery 4, P1 =Δ T1*C*M/t+I2* R, when being heated to battery 4, P1=Δ T1*C*M/t-I2*R.Also, battery thermal management controls Device obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains the inspection of flow sensor 16 The flow rate information of survey adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.Finally, controller is according to battery 4 P1, P2 by control semiconductor heat exchange module 3 or heater 11 or compressor 11 power and expansion valve aperture Accurately to control heating power/refrigeration work consumption of battery 4.
According to one embodiment of present invention, controller can be also used for obtaining the temperature of battery, and judge the temperature of battery Whether degree is greater than the first temperature threshold or is less than second temperature threshold value, wherein when the temperature of battery is greater than the first temperature threshold When, into refrigerating mode；When the temperature of battery is less than second temperature threshold value, into heating mode, the first temperature threshold is greater than Second temperature threshold value.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the One temperature threshold can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, battery manager obtains the temperature of battery in real time, and is judged.If battery Temperature is higher than 40 DEG C, illustrates that the temperature of the battery 4 at this time is excessively high, to avoid high temperature from having an impact the performance of the battery 4, needs Cooling processing is carried out to battery 4, humidity control system enters refrigerating mode, and on-board air conditioner controller controls the first electronic valve 14 and opens It opens.When cooling down to battery, the first electronic valve is opened, cold coal flow direction are as follows: the 13-the first electronics of 11-condenser of compressor 2-compressor of valve 15-heat exchanger of the 14-the first expansion valve 11；Medium flow field is respectively as follows: heat exchanger 2-and adds to being 2 in Figure 11 a Hot device 11 (closing)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16-13-heat exchangers of media Containers 2；Colling end-2-heater of heat exchanger 11 (closing)-pumps the 12-the first temperature sensor 14-battery 4-second temperature sensor-15-flow sensor 16-media Containers, 13-colling end.Medium flow field in Figure 12 a To being one, it may be assumed that heat exchanger 2 --- colling end-heater 11 (closing)-pumps 12-the first 14-battery of temperature sensor 4-second temperature sensor-15-16-media Containers of flow sensor, 13-heat exchanger 2.Pass through heat exchanger 2 and colling end Medium in cooling pipe, so that medium and battery 4 carry out heat exchange, the temperature for completing battery is adjusted.
And if the temperature of battery 4 is lower than 0 DEG C, illustrate that the temperature of battery 4 at this time is too low, to avoid low temperature to battery 4 Performance has an impact, and needs to carry out battery 4 heating treatment, and humidity control system enters heating mode, battery thermal management control Device controls heater 11 and opens, while on-board air conditioner controller keeps the first electronic valve 14 to be in close state, medium in Figure 11 b Flow direction is 2, is respectively as follows: 2-heater of heat exchanger 11 (unlatching)-and pumps 12-the first 14-battery of temperature sensor 4-the second 13-heat exchanger of temperature sensor-15-flow sensor, 16-media Containers 2；Fire end-2-heater of heat exchanger 11 (Guan Kaiqi)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16-and is situated between Matter 13-fire end of container.Medium flow field is to being one in Figure 12 b, it may be assumed that heat exchanger 2 --- fire end-heater 11 (unlatching)- Pump the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-16-media Containers of flow sensor 13- Heat exchanger 2.By the medium in heater 11 and fire end heating-cooling coil road, so that medium and battery 4 carry out heat exchange, it is complete It is adjusted at the temperature of battery.
It is how real according to temperature regulatory demand power P 1 and temperature adjusting that controller is described below with reference to specific embodiment The power of semiconductor heat exchange module and/or compressor is adjusted in border power P 2.
According to one embodiment of present invention, when for refrigerating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, And increase the power of semiconductor heat exchange module 3 and/compressor 11 according to difference power, and be less than in temperature regulatory demand power P 1 Or when being equal to temperature adjusting actual power P2, reduce the power of semiconductor heat exchange module 3 and/compressor 11, or keep semiconductor The power of heat exchange module 3 and/compressor 11 is constant.
Further, controller is greater than temperature adjusting actual power P2, and battery in the temperature regulatory demand power P 1 Temperature be greater than the first preset temperature threshold when, control semiconductor heat exchange module 3 with full refrigeration work consumption operation.Wherein, first is pre- If temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.
And if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2, and the temperature of battery is pre- less than first If temperature threshold, controller temperature also in compartment increases the power of semiconductor heat exchange module 3 when being not up to air-conditioning set temperature.
It is greater than temperature in temperature regulatory demand power P 1 and adjusts practical function P2, and the temperature of battery is greater than the first preset temperature When threshold value, controller also increases the aperture of first expansion valve 15, while reducing the aperture of the second expansion valve 25.
Specifically, if on-board air conditioner controller receives the battery refrigerating function starting information of battery manager transmission, The starting of battery refrigerating function, on-board air conditioner controller send battery refrigerating function starting information to battery thermal management controller and half Conductor controller.On-board air conditioner controller receives the temperature regulatory demand power P 1 for the battery that battery manager is sent, and this Information is transmitted to battery thermal management controller and semiconductor control.In battery cooling procedure, the control of on-board air conditioner controller First electronic valve 14 is opened.On-board air conditioner controller receives the temperature of the water temperature information that battery thermal management controller is sent and battery Actual power P2 is adjusted, and the information is transmitted to battery manager and semiconductor control.It is vehicle-mounted in battery cooling procedure The temperature regulatory demand power P 1 of air-conditioner controller control cell and the temperature actual power P2 information of battery, if temperature is adjusted Demand power P1 is greater than temperature actual power P2, then judges whether the temperature of battery reaches 45 DEG C (higher temperatures), if battery Temperature reach 45 DEG C, then on-board air conditioner controller reduce the second expansion valve 15 aperture, increase the first expansion valve 25 aperture, To reduce interior cold medium flux, increase the cold medium flux of the cooling branch of battery, to adjust the cooling and interior cooling refrigeration of battery Amount distribution, meanwhile, semiconductor control controls semiconductor heat exchange module 3 with the operation of full refrigeration work consumption, i.e., maximum refrigeration work consumption fortune Row to alleviate the influence that interior cooling effect caused by interior cooling coolant quantity reduction reduces, and controls heat exchange blower fan with height Rotary speed working.If the temperature of battery is not higher than 45 DEG C, judge whether the temperature in compartment reaches air-conditioning set temperature, if Reach, then on-board air conditioner controller reduces the aperture of the second expansion valve 25, increases the aperture of the first expansion valve 15, if in compartment Temperature do not reach air-conditioning set temperature, then preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 at this time And temperature adjusts the difference portion cooling power between actual power P2, is provided by semiconductor heat exchange module 3.In the cooling function of battery In energy opening process, on-board air conditioner controller monitors the real-time cooling of battery pack practical cooling power and semiconductor heat exchange module in real time But power information, and according to interior cooling power demand and battery pack cooling power demand information, determine 15 He of the first expansion valve Aperture between second expansion valve 25, so as to the refrigerant distribution of the cooling and interior cooling circuit of regulating cell, so that on-board air conditioner The refrigeration work consumption of the cooling branch of the battery of offer is equal to the temperature tune of battery plus the refrigeration work consumption that semiconductor heat exchange module 3 provides Save demand power P1.In battery cooling procedure, if the battery that on-board air conditioner controller receives battery manager transmission is cold But information is completed, i.e. the temperature of battery reaches 35 DEG C, then the cooling information of completing of on-board air conditioner controller forwarding battery gives battery heat Management Controller, battery is cooling to be completed.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, on-board air conditioner preferentially meets the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2 When, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, controller can reduce the cooling power of compressor 11, reduces or partly leads Body heat exchange module 3 reduces refrigeration work consumption, to save electric energy, or keeps the refrigeration function of compressor 11 and semiconductor heat exchange module 3 Rate is constant.
It is appreciated that the second regulating valve 51 is closed if interior cooling is not opened, the second blower 502 does not work.
According to one embodiment of present invention, when for heating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the power between the temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained Difference, and the power for heating the heater 11 of battery is increased according to difference power, and be less than in temperature regulatory demand power P 1 Or when being equal to temperature adjusting actual power P2, keep the power of heater 11 constant.
Further, when for heating mode, battery 4 is heated by semiconductor heating module 3 and heater 11.
Specifically, when work is in heating mode, battery thermal management module 1 obtains the P1 and P2 of battery 4, and is sentenced It is disconnected.If the P1 of battery 4 is greater than P2, illustrate if battery 4 can not be completed within the object time according to current heating power Heating, controller obtains the difference power between the P1 and P2 of battery 4, and increases heater 11 and/or semiconductor according to difference power The power of heat exchange module 3, wherein the difference power of P1 and P2 is bigger, and the power of heater 11 and/or semiconductor heat exchange module 3 increases Add it is more so that the temperature of battery 4 is increased to target temperature in preset time t.And if P1 is less than or equal to P2, it can subtract The heating power of small heater 11 and/or semiconductor heat exchange module 3 is to save electric energy, or keeps heater 11 and/or semiconductor The power of heat exchange module 3 is constant.When the temperature of battery reaches the second set temperature, such as at 10 DEG C, then the heating of battery 4 is completed, Battery manager sends the information of closing temperature regulatory function by CAN communication to battery thermal management controller, to control heating The stopping of device 11 is heated.After if humidity control system entered the heating mode long period, such as after 2 hours, the temperature of battery 4 Degree still is below 10 DEG C, then battery thermal management controller suitably increases the power of heater 11, so that battery 4 is completed to rise as early as possible Temperature.
In an embodiment of the present invention, controller is also greater than temperature adjusting actual power P2 in temperature regulatory demand power P 1 When, increase the revolving speed of heat exchange blower fan.
Further, according to one embodiment of present invention, controller be also used to be less than in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, the revolving speed of reduction pump 12 or the revolving speed of holding pump 12 are constant, and adjusting in temperature need to When power P 1 being asked to be greater than temperature adjusting actual power P2, the revolving speed of pump 12 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery 4 is less than or waits In P2, the revolving speed that controller then controls pump 12 is reduced, and to save electric energy, or keeps the revolving speed of pump 12 constant.And if battery 4 P1 be greater than P2, except control compressor of air conditioner cooling power increases, the aperture of the first expansion valve 15 increases, semiconductor heat exchange module 3 or the power of heater 11 increase outer, the revolving speed that can also control pump 12 improves, and cooling stream is flowed through in the unit time to increase The mass of medium of road cross-sectional area, so that the temperature for improving battery 4 adjusts actual power P2, to realize temperature in object time t Degree is adjusted.
It is adjusted below with reference to the battery temperature that specific embodiment describes system shown in Figure 11 a-11b and Figure 12 a-12b Detailed process.
1, when battery refrigerating function is opened, the power supply of semiconductor heat exchange module forward direction, the cooling termination of semiconductor heat exchange module Enter battery cooling circuit.
The cooling power of the cooling branch of battery is that the cooling power for the refrigerant for flowing through heat exchanger 2 by the first expansion valve adds The cooling power for flowing through semiconductor heat exchange module colling end and medium temperature being reduced.The cooling power of the cooling branch of car is Evaporator is flowed through by the refrigerant of the second expansion valve, air blows to the cooling power of the air-conditioning cooling wind in compartment by evaporator.
(1) battery is cooling distributes with interior cooling initial power
If battery cooling requirement power is P1, the practical cooling power of battery is P2, and P3 is the maximum of semiconductor heat exchange module Cooling power, P6 are interior cooling power, and P7 is compressor maximum cooling power.
When the sum of power of battery cooling requirement power P 1 and interior cooling requirement power P 6≤cooling function of compressor maximum Rate P7, i.e. P1+P6≤P7, and P1 < P7, P6 < P7, then compressor is run according to P1+P6 refrigeration work consumption.Control second is swollen simultaneously The aperture of swollen valve, so that interior cooling power is P6.The aperture of the first expansion valve is controlled, so that battery cooling power is P1.
As P7 < P1+P6≤P7+P3, Pe=P1+P6-P7, Pf=P1+P6-P3, then compressor is according to maximum refrigeration work consumption P7 operation, semiconductor heat exchange module are run according to cooling power Pe.The cooling power of the cooling branch of battery is P1, the cooling branch of car Road power=P6.Or semiconductor heat exchange module is run according to the cooling power P 3 of maximum, compressor is transported according to cooling power Pf Row.The aperture of the second expansion valve is controlled simultaneously, so that interior cooling power is P6, the aperture of the first expansion valve is controlled, so that electric Pond cooling power is P1.
As P1+P6 > P7+P3, then judge whether battery temperature is greater than 45 DEG C, is then preferably that battery is cold if it is greater than 45 DEG C But cooling power is provided, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to the cooling power P 3 of maximum Operation, while improving heat exchange blower fan revolving speed.Increase the aperture of the first expansion valve, so that the cooling power of the cooling branch of battery is P1 reduces the aperture of the second expansion valve, so that interior cooling branch power=P7+P3-P1.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, compressor is according to maximum refrigeration function Rate P7 operation, semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange blower fan revolving speed.It is swollen to increase second The aperture of swollen valve reduces the aperture of the second expansion valve so that the cooling power of interior cooling branch is P6, so that the cooling branch of battery Cooling power=the P7+P3-P6 on road.If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery. The revolution speed in battery cooling circuit can also be improved simultaneously, improve heat exchange power.
(2) power distribution in battery cooling procedure
If P1 > P2, and Pc=P1-P2, P1+P6+Pc < P7, then compressor increases refrigeration work consumption Pc, while increasing the The aperture of one expansion valve improves the revolving speed of heat exchange blower fan and pump, to improve battery cooling power.
If P1 > P2, and Pc=P1-P2, P7 < P1+P6+Pc≤P7+P3, Pg=P1+P6+Pc-P7, Ph=P1+P6+ Pc-P3, then compressor is run according to maximum refrigeration work consumption P7, and semiconductor takes a breath module according to cooling power Pg operation.Or pressure Contracting machine is run according to refrigeration work consumption Ph, and semiconductor takes a breath module according to the cooling operation of power P 3 of maximum.Or compressor according to The cooling power P 7 of maximum is run, and semiconductor heat exchange module increases cooling power Pc.Or compressor increases cooling power Pc, partly Conductor heat exchange module is run according to the cooling power P 3 of maximum.Or be that compressor cooling power is constant, semiconductor heat exchange module Cooling power increase Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is constant.And or Person's compressor cooling power increases 0.5*Pc, and semiconductor heat exchange module cooling power increases 0.5Pc.Or according to compressor and The ratio of the maximum cooling power of semiconductor heat exchange module respectively proportionally increases cooling power.Increase the first expansion valve simultaneously Aperture, the revolving speed of heat exchange blower fan and pump is improved, so that the cooling power of the cooling branch of battery increases Pc.
If P1 > P2, Pc=P1-P2, and P1+P6+Pc > P7+P3, then compressor is transported according to the cooling power P 7 of maximum Row, while semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving rotation speed of fan, battery thermal management heat exchange mould Block improves revolution speed, to improve heat exchange power.At this point, judging whether battery temperature is greater than 45 DEG C, if it is greater than 45 DEG C, then preferentially Cooling power is provided for battery cooling, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to maximum cold But power P 3 is run, while improving rotation speed of fan.Increase the aperture of the first expansion valve, so that the cooling power of the cooling branch of battery For P1+Pc, the aperture of the second expansion valve is reduced, so that interior cooling branch power=P7+P3-P1-Pc, while controlling revolution speed It improves, heat exchange blower fan revolving speed improves, so that the cooling power of the cooling branch of battery increases Pc.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, compressor is according to maximum refrigeration function Rate P7 operation, semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange blower fan revolving speed.It is swollen to increase second The aperture of swollen valve reduces the aperture of the first expansion valve so that the cooling power of interior cooling branch is P6, so that the cooling branch of battery Cooling power=the P7+P3-P6 on road.If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery.
If P1≤P2, and Pc=P2-P1 then maintain compressor refrigeration power constant, semiconductor refrigerating power is maintained not Become, or reduce the refrigeration work consumption of compressor, reduces the cooling power of semiconductor heat exchange module, or reduce by the first expansion valve Aperture, or the revolving speed of heat exchange blower fan and pump is reduced, so that the cooling power of the cooling duplexure of battery declines Pc.
2 when battery heating function is opened, semiconductor heat exchange module reverse power supply, the access of semiconductor heat exchange module fire end Battery heating circuit.
The heating power of battery heating circuit adds the raised heating power of medium temperature It flows through semiconductor heat exchange module fire end and makes the raised heating power of medium temperature.
(1) set battery demand for heat power as P1, the practical heating power of battery is P2, P4 be semiconductor heat exchange module most Big heating power, P5 are the maximum heating power of ptc heater.
If P1≤P5, ptc heater provides heating power according to heating power P1 for battery.
If P1 > P5, and P1≤P5+P4, P1-P5=Pd, then ptc heater is battery according to maximum heating power P 5 Heating power is provided, while semiconductor heat exchange module provides heating power according to heating power Pd for battery, while improving heat exchange Rotation speed of fan, battery thermal management heat exchange module improves revolution speed, to improve heat exchange power.If P1 > P5, and P1 > P5+P4, Then ptc heater provides heating power according to maximum heating power P 5 for battery, while semiconductor heat exchange module is according to most greatly Thermal power P3 provides heating power for battery, while improving heat exchange blower fan revolving speed, and battery thermal management heat exchange module improves revolution speed, To improve heat exchange power.
(2) in heating process, if P1≤P2, and Pc=P2-P1, then semiconductor heat exchange module reduces heating power Pc, It reduces heat exchange blower fan revolving speed or ptc heater heating power reduces Pc, while battery thermal management heat exchange module reduces pump and turns Speed, to save electric energy.Or keep current heating power constant.
During heating, if when P1 > P2, Pc=P1-P2, and P1+Pc≤P5, then ptc heater increases heating function Rate Pc, while battery thermal management module control revolution speed improves, to improve battery heating power.
If P1 > P2, Pc=P1-P2, and P5 < P1+Pc≤P5+P4, Pi=P1+Pc-P5, Pj=P1+Pc-P4, then Ptc heater is run according to maximum heating power P 5, and semiconductor heat exchange module is run according to heating power Pi.Or PTC heating Device is run according to heating power Pj, and semiconductor heat exchange module is run according to maximum heating power P 4.Or ptc heater is according to most Big heating power P5 provides heating power for battery, and semiconductor heat exchange module increases heating power Pc.It or is that heater adds Thermal power is constant, and the heating power of semiconductor heat exchange module increases Pc.Or heater heating power increases Pc, semiconductor changes The heating power of thermal modules is constant.Or ptc heater heating power increases 0.5*Pc, semiconductor heat exchange module heating power Increase 0.5Pc, or respectively proportionally according to the ratio of ptc heater and the maximum heating power of semiconductor heat exchange module Increase heating power.Heat exchange blower fan revolving speed is improved simultaneously, and battery thermal management heat exchange module improves revolution speed, to improve heat exchange function Rate, so that battery heating power increases Pc.
If P1 > P2, Pc=P1-P2, and P1+Pc > P5+P4, then ptc heater is electricity according to maximum heating power P 5 Pond provides heating power, while semiconductor heat exchange module provides heating power according to maximum heating power P 4 for battery, mentions simultaneously High heat exchange blower fan revolving speed, battery thermal management heat exchange module improves revolution speed, to improve heat exchange power.
The humidity control system of on-vehicle battery according to an embodiment of the present invention is adjusted by the temperature that controller obtains battery Demand power and temperature adjust actual power, and adjust actual power according to temperature regulatory demand power and temperature and change semiconductor The power of thermal modules and/or compressor is adjusted.Thus, it is possible to when on-vehicle battery is too high or too low for temperature, according to vehicle-mounted Battery temperature is adjusted in the actual state of battery, and the temperature of on-vehicle battery is made to maintain preset range, avoid occur due to The case where influence on-vehicle battery performance too high or too low for temperature.
Figure 13 is the flow chart of the temperature control method of the on-vehicle battery of the 7th embodiment according to the present invention.Wherein, such as Shown in Figure 11 a-11b, on-vehicle battery humidity control system includes heat exchanger；Compressor, compressor are connect with heat exchanger；With compression The connected condenser of machine；Battery thermal management module, battery thermal management module connect to form heat exchange flow path with heat exchanger；Semiconductor changes Thermal modules, semiconductor heat exchange module include colling end, fire end and heat exchange blower fan, the one of them of colling end or fire end with change Hot device connection, is used to be heat exchanger heating power/refrigeration work consumption, and heat exchange blower fan is connected with the another one of colling end or fire end, Institute's air-heater is to the air draft to outside compartment；As shown in figure 13, on-vehicle battery temperature control method the following steps are included:
S1 " obtains the temperature regulatory demand power P 1 of battery.
Further, according to one embodiment of present invention, the temperature regulatory demand power P 1 for obtaining battery specifically includes: The first parameter when the opening temperature adjusting of battery is obtained, and generates the first temperature regulatory demand function of battery according to the first parameter Rate.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand function of battery according to the second parameter Rate.The temperature tune of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Save demand power P1.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate battery according to the first parameter The first temperature regulatory demand power specifically include: obtain the first temperature difference Δ T between initial temperature and target temperature1.Root According to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, is passed through The second temperature regulatory demand power of following formula (2) generation battery:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
Wherein, when being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C*M/t-I2*R。
S2 ", the temperature for obtaining battery adjust actual power P2.
According to one embodiment of present invention, the temperature for obtaining battery adjusts actual power P2 and specifically includes: acquisition is used for The inlet temperature and outlet temperature of the flow path of regulating cell temperature, and obtain the flow velocity v that medium flow field enters flow path.According to the stream of battery The inlet temperature and outlet temperature on road generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2Temperature is generated with flow velocity v Degree adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
S3 " adjusts actual power P2 to semiconductor heat exchange module and/or pressure according to temperature regulatory demand power P 1 and temperature The power of contracting machine is adjusted.
Specifically, when cooling down to battery, as shown in fig. 11a, colling end can be in parallel with heat exchanger and battery, such as Shown in Figure 12 a, colling end can also be connected between heat exchanger and battery.When being heated to battery, as shown in figure 11b, add Hot end can be in parallel with heat exchanger and battery, and as shown in Figure 12b, fire end can also be connected between heat exchanger and battery.
Specifically, semiconductor mold changing block has fire end and colling end, after power supply reversal connection, fire end and colling end Place-exchange.The fire end or colling end of semiconductor heat exchange module are equipped with heat exchange blower fan, to the air draft to outside compartment.Heat exchanger It can be plate heat exchanger, as shown in Figure 11 a-11b and 12a-12b, there are two road, wherein first pipe and compressions for heat exchanger tool Machine is connected, and second pipe is connected with battery thermal management module, and what is flowed in first pipe is refrigerant, and what is flowed in second pipe is to be situated between Matter.
As shown in Figure 11 a-11b, when semiconductor heat exchange module is in parallel with heat exchanger, if the temperature when battery is higher When, such as when higher than 40 DEG C, the humidity control system of on-vehicle battery enters refrigerating mode, semiconductor heat exchange module, battery thermal It manages module and on-board air conditioner is started to work, wherein the cooling power of battery cooling circuit mainly has 2 sources, one of them is vehicle The compressor of air-conditioning is carried, compressor refrigerant flows into heat exchanger, provides cooling power for heat exchanger, and medium flow field passes through in cooling pipe After heat exchanger, medium temperature decline；The other is semiconductor heat exchange module, the power supply of semiconductor heat exchange module forward direction, cooling termination Enter cooling pipe, directly medium is cooled down, provide cooling power for battery is cooling, while heat exchange blower fan is by the heat of fire end Amount blows to outside vehicle.And if the temperature of battery is lower, such as less than 0 DEG C, the humidity control system of on-vehicle battery enters heated mould Formula, semiconductor heat exchange module and battery thermal management module are started to work, semiconductor heat exchange module reverse power supply, as shown in figure 11b, Fire end accesses cooling pipe, and fire end is begun to warm up, to heat to the medium in cooling pipe, to add to battery Heat, while heat exchange blower fan blows to the refrigerating capacity of colling end outside vehicle.
Such as Figure 12 a-12b, semiconductor heat exchange module can also be connected between heat exchanger and battery, by controlling semiconductor The power supply direction of heat exchange module, can be completed the cooling/heating to medium, to add refrigeration work consumption/heating power to provide, complete The cooling/heating of battery.
In carrying out cooling/or heating process to battery, the temperature regulatory demand power P 1 and temperature of battery are also obtained in real time Degree adjusts actual power P2, wherein the temperature of battery is adjusted to setting within the object time by temperature regulatory demand power P 1 Target temperature, it is desirable to provide to the power of battery, battery temperature adjusts actual power P2 and currently carries out temperature tune to battery When section, the actual power that battery obtains, target temperature and object time are setting value, can be according to the actual conditions of on-vehicle battery It is preset, for example, target temperature can be set at 35 DEG C or so when cooling down to battery, when being heated to battery, Target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Then, according to P1 and P2 to semiconductor heat exchange mould The power of block is adjusted, so that battery can complete temperature adjusting within the object time, maintains the temperature of on-vehicle battery Preset range, avoids that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
Compressor can also provide refrigeration work consumption except that can provide cooling power for battery for compartment.
According to one embodiment of present invention, as shown in Figure 11 a-11b and Figure 12 a-12b, on-vehicle battery temperature adjusts system System further includes the cooling branch of car being connected with compressor.Actual power is adjusted when temperature regulatory demand power P 1 is greater than temperature P2, and when the mean temperature of battery is greater than the first preset temperature threshold, above-mentioned method further include: reduce interior cooling branch Refrigeration work consumption, while increasing the refrigeration work consumption aperture of the cooling branch of battery.First preset temperature threshold can be according to the actual situation It is preset, such as can be 45 DEG C.
Specifically, compressor and condenser constitute air conditioner refrigerating branch.It is divided into 2 inside on-board air conditioner since condenser Independent cooling branch, respectively interior cooling branch and the cooling branch of battery.Car cools down branch Space in compartment provides refrigeration work consumption, and the cooling branch of battery mainly passes through heat exchanger and provides refrigeration work consumption for battery.It is wherein electric The cooling power of the cooling branch in pond mainly has 2 sources, one of them is that the refrigerant of compressor flows into heat exchanger, is mentioned for heat exchanger Cooling power is supplied, the other is the colling end of semiconductor heat exchange module, which carries out refrigeration, provides cooling function for the cooling branch of battery Rate.
First electronic valve and the second electronic valve be respectively used to the cooling branch of control battery and interior cooling branch open and It closes.First expansion valve and the second expansion can be respectively used to the cooling branch of control battery and interior cooling branch and cold medium flux, To control the cooling power of the cooling branch of battery and interior cooling branch respectively.
When the starting of the refrigerating function of battery, there is a flow direction, the cooling branch of car are as follows: compressor-condensation in refrigerant The second electronic valve of device-- the second expansion valve-evaporator-compressor；Battery cools down branch 30 are as follows: compressor-condenser- First electronic valve-the first expansion valve-heat exchanger-compressor.When battery refrigerating function does not start, the first electronic valve is closed It closes.When the starting of battery refrigerating function, the first electronic valve is opened.If car does not need to freeze at this time, the second electronic valve is closed It closes.
In an embodiment of the present invention, as shown in Figure 11 a-11b and Figure 12 a-12b, battery thermal management module includes mutual Concatenated heater, pump and media Containers, wherein be connected between the first end of heat exchanger and the first end of battery, medium holds Device is connected between the second end of heat exchanger and the second end of battery, and battery thermal management module further includes first that battery is arranged in First temperature sensor at end, and the second temperature sensor and flow sensor of the second end of battery are set.
Specifically, the humidity control system of on-vehicle battery except can by the fire end of semiconductor heat exchange module 3 to medium into Row heating, can also heat medium by heater, to carry out temperature adjusting to battery 4 when battery temperature is lower.With Temperature adjusting is carried out to battery when battery temperature is lower.Heater can be ptc heater, provide heating power for battery, Heater is not direct to be contacted with battery, safety with higher, dependable with function.Pump is mainly used for providing power, is situated between Matter container is mainly used for storage medium and receives the medium added to humidity control system, when the medium in cooling pipe is reduced When, the medium in media Containers can be automatically replenished.Temperature of first temperature sensor to detect cell flow entrance medium, the Temperature of two temperature sensors to detect cell flow outlet medium.Flow sensor is managed to detect in humidity control system The flow rate information of medium in road.
According to one embodiment of present invention, above-mentioned temperature control method can also include: the temperature for obtaining battery, sentence Whether the temperature in power-off pond is greater than the first temperature threshold；When the temperature of battery is greater than the first temperature threshold, into refrigerating mode； When the temperature of battery is less than or equal to the first temperature threshold, continue to judge whether the temperature of battery is less than second temperature threshold value； When the temperature of battery is less than second temperature threshold value, into heating mode, wherein the first temperature threshold is greater than second temperature threshold Value.
Specifically, after vehicle powers on, the temperature of battery is obtained in real time, and is judged.If it is determined that the temperature of battery is high In 40 DEG C, illustrate that the battery temperature is excessively high at this time, to avoid high temperature from having an impact the performance of the battery, needs to carry out battery Cooling processing, into refrigerating mode.Control the first electronic valve of control is opened, the power supply of semiconductor heat exchange module forward direction, cooling termination Enter cooling pipe.When cooling down to battery, the first electronic valve is opened, and passes through Jie in heat exchanger and colling end cooling pipe Matter, so that medium and battery carry out heat exchange, the temperature for completing battery is adjusted.
And if the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery at this time is too low, to avoid low temperature to the performance of battery It has an impact, needs to carry out battery heating treatment, humidity control system enters heating mode, and control heater is opened, partly led Body heat exchange module reverse power supply, fire end accesses cooling pipe, while the first electronic valve being kept to be in close state, and passes through heating Medium in device and fire end heating-cooling coil road, so that medium and battery 4 carry out heat exchange, the temperature for completing battery is adjusted.
According to one embodiment of present invention, when for refrigerating mode, according to temperature regulatory demand power P 1 and temperature tune The refrigeration work consumption of semiconductor heat exchange module, which is adjusted, in section actual power P2 specifically includes: judging temperature regulatory demand power P 1 Whether it is greater than temperature and adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, obtain It takes temperature regulatory demand power P 1 and temperature to adjust the difference power between actual power P2, and semiconductor is increased according to difference power and is changed The power of thermal modules and/or compressor；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, Reduce the power of semiconductor heat exchange module and/or compressor, or keeps the power of semiconductor heat exchange module and/or compressor not Become.
Further, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and root are obtained It is specifically included according to the power that difference power increases semiconductor heat exchange module: adjusting reality when temperature regulatory demand power P 1 is greater than temperature Power P 2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module and run with full refrigeration work consumption. Wherein, the first preset temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.
Actual power P2 is adjusted when temperature regulatory demand power P 1 is greater than temperature, and the temperature of battery is less than the first default temperature When spending threshold value, further judge whether temperature reaches air-conditioning set temperature in compartment；If not up to air-conditioning set temperature, increases Add the refrigeration work consumption of semiconductor heat exchange module.
It is greater than temperature in temperature regulatory demand power P 1 and adjusts practical function P2, and the temperature of battery is greater than the first preset temperature When threshold value, also increase the aperture of first expansion valve, while reducing the aperture of the second expansion valve.
Specifically, in battery cooling procedure, the temperature regulatory demand power P 1 of control cell and the temperature of battery are practical 2 information of power P judges whether the temperature of battery reaches if temperature regulatory demand power P 1 is greater than temperature actual power P2 45 DEG C (higher temperature), if the temperature of battery reaches 45 DEG C, the aperture of the second expansion valve is reduced, increases the first expansion valve Aperture, to reduce interior cold medium flux, the cold medium flux of the cooling branch of increase battery, to adjust the cooling and interior cooling of battery Refrigerating capacity distribution, meanwhile, control semiconductor heat exchange module is run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, to alleviate The cooling coolant quantity of car reduces the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high rotary speed working. If the temperature of battery is not higher than 45 DEG C, judges whether the temperature in compartment reaches air-conditioning set temperature, if reached, subtract The aperture of few second expansion valve, increases the aperture of the first expansion valve, if the temperature in compartment does not reach air-conditioning set temperature, Then preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 and temperature adjust the difference between actual power P2 at this time Value part cooling power is provided by semiconductor heat exchange module.In battery refrigerating function opening process, real time monitoring battery pack is real The real-time cooling power information of border cooling power and semiconductor heat exchange module, and it is cold according to interior cooling power demand and battery pack But power requirement information determines the aperture between the first expansion valve and the second expansion valve, so that regulating cell is cooling and car is cold But the refrigerant distribution in circuit, so that the refrigeration work consumption for the cooling branch of battery that on-board air conditioner provides is mentioned plus semiconductor heat exchange module The refrigeration work consumption of confession is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if the temperature of battery reaches 35 DEG C, then battery is cooling completes.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, preferentially meet the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2, if Battery temperature is no more than 45 DEG C, then the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is sufficient, And reaching balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, it can reduce the refrigeration work consumption of semiconductor heat exchange module, to save electric energy, or Person keeps the refrigeration work consumption of semiconductor heat exchange module constant.
According to one embodiment of present invention, in battery cooling procedure, judge whether temperature regulatory demand power P 1 is big Actual power P2 is adjusted in temperature；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, temperature is obtained Regulatory demand power P 1 and temperature adjust the difference power between actual power P2, and increase the cold of compressor of air conditioner according to difference power But power；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, compressor of air conditioner is reduced Cooling power, or keep the cooling power of compressor of air conditioner constant.
According to one embodiment of present invention, it when for heating mode, is adjusted according to temperature regulatory demand power and temperature Actual power is adjusted the heating power of semiconductor heat exchange module and specifically includes: whether judging temperature regulatory demand power P 1 Actual power P2 is adjusted greater than temperature；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, temperature is obtained The difference power between regulatory demand power P 1 and temperature adjusting actual power P2 is spent, and is increased according to difference power and is changed for semiconductor The heating power of thermal modules；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, half is kept The heating power of conductor heat exchange module is constant.
Further, when for heating mode, battery is heated by semiconductor heating module and heater.
Specifically, when working in heating mode, the P1 and P2 of battery are obtained, and judged.If the P1 of battery is big In P2, illustrate to obtain if the heating of battery can not be completed within the object time according to current heating power battery P1 and Difference power between P2, and according to difference power increase heater and/or the power of semiconductor heat exchange module, wherein P1's and P2 Difference power is bigger, and the power increase of heater and/or semiconductor heat exchange module is more, so that the temperature of battery is in preset time t Inside it is increased to target temperature.And if P1 is less than or equal to P2, it can reduce the heating of heater and/or semiconductor heat exchange module Power is to save electric energy, or keeps the power of heater and/or semiconductor heat exchange module constant.When the temperature of battery reaches second Set temperature, such as at 10 DEG C, then battery heating is completed, control heater stopping is heated.If humidity control system into After entering the heating mode long period, such as after 2 hours, the temperature of battery still is below 10 DEG C, then suitably increases the function of heater Rate, so that battery is completed to heat up as early as possible.
In an embodiment of the present invention, semiconductor heat exchange module is also greater than temperature in temperature regulatory demand power P 1 and adjusts in fact When the power P 2 of border, increase the revolving speed of heat exchange blower fan.
When humidity control system enters heating mode or refrigerating mode, if the P1 of battery is less than or equal to P2, The revolving speed of control pump reduces, and to save electric energy, or keeps the revolving speed of pump constant.And if the P1 of battery is greater than P2, except control The cooling power of compressor of air conditioner increases, the aperture of the first regulating valve increases, the power of semiconductor heat exchange module or heater Outside, the revolving speed that can also control pump improves, to increase the mass of medium for flowing through cooling flowing path cross-sectional area in the unit time, thus The temperature for improving battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, can be according to the virtual condition essence of each battery The heating power and cooling power for really controlling each battery, adjust temperature when battery temperature is excessively high or when too low Section, so that the temperature of battery is maintained preset range, avoid occur due to temperature influence on-vehicle battery performance.
In addition, the present invention also proposes a kind of non-transitorycomputer readable storage medium, it is stored thereon with computer program, The program realizes above-mentioned temperature control method when being executed by processor.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, the temperature regulatory demand function of available battery Rate and temperature adjust actual power, then adjust actual power to semiconductor heat exchange mould according to temperature regulatory demand power and temperature The power of block and/or compressor is adjusted, and temperature to be adjusted when on-vehicle battery is too high or too low for temperature, makes vehicle-mounted The temperature of battery maintains preset range, avoids that there is a situation where due to the excessively high influence on-vehicle battery performance of temperature.
Figure 14 is the block diagram of the humidity control system of the on-vehicle battery of the 9th embodiment according to the present invention.Such as figure Shown in 14, which includes: that compressor 11, condenser 13, the cooling branch 20 of car being connected with compressor 11 and battery are cooling Branch 30, semiconductor heat exchange module 3, controller (not specifically illustrated in figure).
Wherein, condenser 13 is connected with compressor 11.The cooling branch 30 of battery includes heat exchanger 2, the cooling branch 20 of car Including evaporator 21, and compressor 11 is connected with institute heat exchanger 2 and evaporator 21.Semiconductor heat exchange module 3 include colling end, The colling end that fire end states semiconductor heat exchange module 3 is connected with heat exchanger 2, and semiconductor heat exchange module 3 for heat exchanger 2 to provide Cooling power.Battery thermal management module 1 connect formation heat exchange flow path with heat exchanger 2.Controller respectively at semiconductor exchange heat mould Block 3, battery thermal management module 1 and compressor 11 connect, and controller is used to obtain the temperature regulatory demand power P 1 and temperature of battery Degree adjusts actual power P2, and adjusts actual power P2 to semiconductor heat exchange module according to temperature regulatory demand power P 1 and temperature 3 and/or the refrigeration work consumption of compressor 11 be adjusted.
Further, in an embodiment of the present invention, as shown in figure 14, the colling end and heat exchanger of semiconductor heat exchange module 2 are connected in parallel on the cooling branch 30 of battery, wherein the entrance of cold end is connected with the first end of heat exchanger 2, the outlet of colling end It is connected with the second end of heat exchanger 2；As shown in Figure 15 a-15b, the colling end and heat exchanger 2 of semiconductor heat exchange module 3, which are connected, to be connected It connects on the cooling branch 30 of battery, wherein the outlet phase of the entrance of the colling end of semiconductor heat exchange module 3 and the first expansion valve 15 Even, the outlet of the colling end of semiconductor heat exchange module 3 is connected with the second end of heat exchanger, alternatively, semiconductor heat exchange module 3 is cold But the entrance held is connected with the first end of heat exchanger 2, the outlet of the colling end of semiconductor heat exchange module and the entrance of compressor 11 It is connected.
Semiconductor heat exchange module 3 further includes the connected heat exchange blower fan 301 of fire end, and heat exchange blower fan 301 is to outside compartment Air draft.
Specifically, semiconductor mold changing block 3 has fire end and colling end.The fire end of semiconductor heat exchange module 3 is equipped with Heat exchange blower fan 301, to the air draft to outside compartment.Heat exchanger 2 can be plate heat exchanger, as shown in Figure 14 and 15a-15b, heat exchange There are two roads for the tool of device 2, and wherein first pipe is connected with compressor 11, and second pipe is connected with battery thermal management module 1, the first pipe What is flowed in road is refrigerant, and what is flowed in second pipe is medium.
Compressor 11 and condenser 12 constitute air conditioner refrigerating branch 10, evaporator 12, the second expansion valve 25, the second electronic valve 24 constitute interior cooling branch 20, and heat exchanger 2, the first expansion valve 15, the first electronic valve 14 constitute the cooling branch 30 of battery.
When cooling down to battery, as shown in figure 14, colling end can be in parallel with heat exchanger, as shown in fig. 15 a, cooling End can also be connected between heat exchanger 2 and the first expansion valve 15, and as illustrated in fig. 15b, colling end can also be connected on heat exchanger 2 and pressure Between contracting machine 11.
(compressor 11) is divided into 2 independent cooling branches since condenser 12 inside on-board air conditioner, respectively interior Cooling branch 20 and the cooling branch 30 of battery.The cooling branch 20 of car is main to provide system by evaporator 12 for the space in compartment Cold power, it is that battery 4 provides refrigeration work consumption that the cooling branch of battery, which mainly passes through heat exchanger 2,.The wherein cooling of the cooling branch of battery Power mainly has 2 sources, one of them is that the refrigerant of compressor 11 flows into heat exchanger 2, provides cooling function for heat exchanger 2 Rate, the other is it is that heat exchanger 2 provides cooling power that the colling end of semiconductor heat exchange module 3, which carries out refrigeration,.First electronic valve 14 Opening and closing for the cooling branch 30 of control battery and interior cooling branch 20 is respectively used to the second electronic valve 24.First expansion Valve 15 and the second expansion valve 25 can be respectively used to control the cooling branch 30 of battery and interior cooling branch 20 and cold medium flux, to divide It Kong Zhi not the cooling branch 30 of battery and the interior cooling power for cooling down branch 20.
When the starting of the refrigerating function of battery 4, there are 2 flow directions, the cooling branches 20 of car are as follows: compressor for refrigerant 11-12-compressors of condenser the 13-the second electronic valve 25-evaporator of the 24-the second expansion valve 11；In Figure 14, battery is cooling Branch 30 are as follows: 11-condenser of compressor the 13-the first electronic valve 15-heat exchanger of the 14-the first expansion valve, 2-compressor 11.It is cold Matchmaker is after heat exchanger 2, temperature decline, and after battery medium flows through heat exchanger 2, temperature decline provides cooling function for battery cooling Rate.Meanwhile colling end may be that battery provides cooling power, the flow direction of refrigerant in the cooling branch of semiconductor are as follows: colling end- 2-colling end of heat exchanger.After refrigerant flows through heat exchanger 2,2 temperature of heat exchanger decline, refrigerant temperature is increased, and semiconductor changes Thermal modules 3 flow anew through heat exchanger 2 for after the higher refrigerant cooling of portion temperature, so that 2 temperature of heat exchanger declines, battery When medium flows through heat exchanger 2, medium temperature decline.It is possible thereby to which semiconductor heat exchange module improves the system of battery cooling circuit Cold power.
And scheme shown in Figure 15 a-15b is to be directly accessed colling end in the cooling branch 30 of battery, and semiconductor changes Thermal modules 3 and heat exchanger 2 are to be connected in series.In Figure 15 a, after refrigerant first passes through the colling end of semiconductor heat exchange module 3, at a temperature of Drop, using heat exchanger 2, so that the cooling power of the cooling branch 30 of battery is higher.In Figure 15 b, refrigerant first passes through heat exchanger 2, So that refrigerant temperature increases, colling end then is being flowed through, so that refrigerant temperature declines, is improving the refrigeration work consumption of air-conditioning system, Alleviate the refrigeration burden of on-board air conditioner.
In carrying out cooling/or heating process to battery, controller also obtains the temperature regulatory demand power of battery in real time P1 and temperature adjust actual power P2, wherein temperature regulatory demand power P 1 is to adjust the temperature of battery within the object time To the target temperature of setting, it is desirable to provide to the power of battery 4, battery temperature adjusts actual power P2 and currently carries out to battery When temperature is adjusted, the actual power that battery 4 obtains, target temperature and object time are setting value, can be according to on-vehicle battery Actual conditions are preset, for example, when cooling down to battery, target temperature be can be set at 35 DEG C or so, when to battery into When row heating, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Controller can be according to P1 and P2 The refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 11 is adjusted, so that battery 4 can be complete within the object time It is adjusted at temperature, the temperature of on-vehicle battery is made to maintain preset range, avoid occurring due to the excessively high influence on-vehicle battery of temperature The case where energy.
In an embodiment of the present invention, as shown in Figure 14 and Figure 15 a-15b, battery thermal management module 1 may include: setting Pump 12, the first temperature sensor 14, second temperature sensor 15 and flow sensor 16 on heat exchange flow path, pump 12, first Temperature sensor 14, second temperature sensor 15 and flow sensor 16 are connect with controller；Wherein: pump 12 is used to provide power So that the media flow in heat exchange flow path；First temperature sensor 14 is used to detect the entrance temperature for the medium for flowing into on-vehicle battery Degree；Second temperature sensor 15 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 16 is for detecting The flow velocity of medium in heat exchange flow path.
Further, battery thermal management module 1 can also include the media Containers 13 being arranged on heat exchange flow path, and medium holds Device 13 is for storing and providing medium to heat exchange flow path.Battery thermal management module 1 can also include: heater 11, heater 11 It is connect with controller, for heating the medium in heat exchange flow path.
It is appreciated that the humidity control system of on-vehicle battery, which is removed, can pass through heater 11 as shown in Figure 14 and Figure 15 a-15b Medium is heated, to carry out temperature adjusting to battery 4 when battery temperature is lower.Heater 11 can be ptc heater, To carry out CAN communication with battery thermal management controller, heating power is provided for the humidity control system of on-vehicle battery, by battery Thermal management controller control, heater 11 is not direct to be contacted with battery 4, safety with higher, dependable with function.Pump 12 are mainly used for providing power, and media Containers 13 are mainly used for storage medium and receive the medium added to humidity control system, When the medium in humidity control system is reduced, the medium in media Containers 13 can be automatically replenished.First temperature sensor 14 is used To detect the temperature of cell flow entrance medium, temperature of the second temperature sensor 15 to detect cell flow outlet medium. Flow rate information of the flow sensor 16 to detect pipeline internal medium in humidity control system.
The temperature regulatory demand power P 1 and temperature tune how controller obtains battery 4 are described below with reference to specific example Save actual power P2.
According to one embodiment of present invention, controller can be used for obtaining first when battery opening temperature is adjusted respectively Parameter, and according to the first parameter generate battery the first temperature regulatory demand power, and obtain battery temperature adjust when Second parameter, and according to the second temperature regulatory demand power of the second parameter generation battery, and according to the first temperature tune of battery Save the temperature regulatory demand power P 1 of the second temperature regulatory demand power generation battery of demand power and battery.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 4 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature are obtained between initial temperature and target temperature The first temperature difference Δ T1, and according to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 4 Specific heat capacity, M are the quality of battery 4.
Second parameter is the average current I of battery 4 within a preset time, and battery thermal management module 1 passes through following formula (2) Generate second temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 4.
Specifically, can by current Hall sensor detect battery 4 charging and discharging currents parameter battery manager can root According to the current parameters of battery 4 in a period of time, the average current of battery 4 is estimated.
When being cooled down to battery 4, P1=Δ T1*C*M/t+I2*R；When being heated to battery 4, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, the inlet temperature and that controller is detected also according to the first temperature sensor 14 The outlet temperature of two temperature sensors 15 detection generates second temperature difference Δ T2, and according to the second temperature difference Δ T of each battery2 Actual power P2 is adjusted with the flow velocity v that flow sensor 16 the detects temperature for generating battery.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
Specifically, after vehicle powers on, battery manager judges whether battery 4 needs to carry out temperature tune according to battery temperature Section then sends opening temperature to on-board air conditioner controller by CAN communication and adjusts function if it is determined that battery 4 needs temperature to adjust The information of energy, on-board air conditioner controller forward this information to battery thermal management controller, battery thermal management controller control pump 12 to default revolving speed (such as slow-speed of revolution) start-up operation.
Then, battery manager obtains the initial temperature (i.e. Current Temperatures) of battery 4, target temperature and reaches from initial temperature To the object time t of target temperature, wherein target temperature and object time t can be preset according to the actual situation, and according to Formula (1) calculates the first temperature regulatory demand power of battery 4.Meanwhile battery manager obtains battery 4 within a preset time Average current I, and according to formula (2) calculate battery 4 second temperature regulatory demand power.Then, battery manager according to The the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 of battery 4 (i.e. will The temperature of battery 4 is adjusted to the demand power of target temperature within the object time), wherein when being cooled down to battery 4, P1 =Δ T1*C*M/t+I2* R, when being heated to battery 4, P1=Δ T1*C*M/t-I2*R.Also, battery thermal management controls Device obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains the inspection of flow sensor 16 The flow rate information of survey adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.
According to one embodiment of present invention, controller can be also used for obtaining the temperature of battery, and judge the temperature of battery Whether degree is greater than the first temperature threshold or is less than second temperature threshold value, wherein when the temperature of battery is greater than the first temperature threshold When, into refrigerating mode；When the temperature of battery is less than second temperature threshold value, into heating mode, the first temperature threshold is greater than Second temperature threshold value.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the One temperature threshold can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, battery manager obtains the temperature of battery in real time, and is judged.If battery Temperature is higher than 40 DEG C, illustrates that the temperature of the battery 4 at this time is excessively high, to avoid high temperature from having an impact the performance of the battery 4, needs Cooling processing is carried out to battery 4, humidity control system enters refrigerating mode, on-board air conditioner controller control the first electronic valve of control 14 open.The flow direction of medium in Figure 14 and Figure 15 a-15b are as follows: 2-heater of heat exchanger 11 (closing)-pumps the 12-the first temperature 14-battery of sensor, 4-second temperature sensor-15-16-media Containers of flow sensor, 13-heat exchanger 2.By changing Medium in hot device 2 and colling end cooling pipe, so that medium and battery 4 carry out heat exchange, the temperature for completing battery is adjusted.
And if the temperature of battery 4 is lower than 0 DEG C, illustrate that the temperature of battery 4 at this time is too low, to avoid low temperature to battery 4 Performance has an impact, and needs to carry out battery 4 heating treatment, and humidity control system enters heating mode, battery thermal management control Device controls heater 11 and opens, while on-board air conditioner controller keeps the first electronic valve 14 to be in close state, Figure 14 and figure 15a-15b medium flow direction are as follows: 12-the first 14-battery of temperature sensor of heat exchanger 2 --- heater 11 (unlatching)-pump 4- 13-heat exchanger of second temperature sensor-15-flow sensor, 16-media Containers 2.Pass through 11 heating-cooling coil of heater Medium in road, so that medium and battery 4 carry out heat exchange, the temperature for completing battery is adjusted.
It is how real according to temperature regulatory demand power P 1 and temperature adjusting that controller is described below with reference to specific embodiment The refrigeration work consumption of semiconductor heat exchange module and/or on-board air conditioner is adjusted in border power P 2.
According to one embodiment of present invention, when for refrigerating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, And increase the refrigeration work consumption of semiconductor heat exchange module 3 and/or on-board air conditioner according to difference power, and in temperature regulatory demand power When P1 is less than or equal to temperature adjusting actual power P2, reduce the refrigeration work consumption of semiconductor heat exchange module 3 and/or on-board air conditioner, Or keep the refrigeration work consumption of semiconductor heat exchange module 3 and/or on-board air conditioner constant.
Further, controller is greater than temperature adjusting actual power P2, and the temperature of battery in temperature regulatory demand power P 1 When degree is greater than the first preset temperature threshold, semiconductor heat exchange module 3 is controlled with the operation of full refrigeration work consumption.Wherein, the first default temperature Degree threshold value can be preset according to the actual situation, such as can be 45 DEG C.
And if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2, and the temperature of battery is pre- less than first If temperature threshold, controller temperature also in compartment increases the refrigeration of semiconductor heat exchange module 3 when being not up to air-conditioning set temperature Power.
It is greater than temperature in temperature regulatory demand power P 1 and adjusts practical function P2, and the temperature of battery is greater than the first preset temperature When threshold value, on-board air conditioner controller also increases the aperture of the first expansion valve 15, while reducing the aperture of the second expansion valve 25, to subtract The refrigeration work consumption of few interior cooling branch 20, while increasing the refrigeration work consumption aperture of the cooling branch 30 of battery.
Specifically, if on-board air conditioner controller receives the battery refrigerating function starting information of battery manager transmission, The starting of battery refrigerating function, on-board air conditioner send battery refrigerating function starting information and change to battery thermal management controller and semiconductor Thermal modules 3.On-board air conditioner controller receives the temperature regulatory demand power P 1 for the battery that battery manager is sent, and the information It is transmitted to battery thermal management controller and semiconductor heat exchange module 3.In battery cooling procedure, on-board air conditioner controller control the One electronic valve 14 is opened.On-board air conditioner controller receives the temperature tune of the water temperature information that battery thermal management controller is sent and battery Actual power P2 is saved, and the information is transmitted to battery manager and semiconductor control.In battery cooling procedure, vehicle-mounted sky The temperature regulatory demand power P 1 of controller control cell and the temperature actual power P2 information of battery are adjusted, if temperature, which is adjusted, to be needed It asks power P 1 to be greater than temperature actual power P2, then judges whether the temperature of battery reaches 45 DEG C (higher temperatures), if battery Temperature reaches 45 DEG C, then on-board air conditioner reduces the aperture of the second expansion valve 15, increases the aperture of the first expansion valve 25, to reduce vehicle Interior cold medium flux increases the cold medium flux of the cooling branch of battery, to adjust the cooling and interior cooling refrigerating capacity distribution of battery, together When, semiconductor control controls semiconductor heat exchange module 3 with the operation of full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, to alleviate The cooling coolant quantity of car reduces the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high rotary speed working. If the temperature of battery is not higher than 45 DEG C, judge whether the temperature in compartment reaches air-conditioning set temperature, if reached, vehicle The aperture that air-conditioner controller reduces by the second expansion valve 25 is carried, increases the aperture of the first expansion valve 15, if the temperature in compartment does not have Have and reach air-conditioning set temperature, then the preferential refrigeration capacity requirement for meeting car, at this time temperature regulatory demand power P 1 and temperature tune The difference portion cooling power between actual power P2 is saved, is provided by semiconductor heat exchange module 3.It was opened in battery refrigerating function Cheng Zhong, on-board air conditioner controller monitor the real-time cooling power letter of the practical cooling power of battery pack and semiconductor heat exchange module in real time Breath, and according to interior cooling power demand and battery pack cooling power demand information, determine the first expansion valve 15 and the second expansion Aperture between valve 25, so as to the refrigerant distribution of the cooling and interior cooling circuit of regulating cell, so that the electricity that on-board air conditioner provides The refrigeration work consumption of the cooling branch in pond is equal to the temperature regulatory demand function of battery plus the refrigeration work consumption that semiconductor heat exchange module 3 provides Rate P1.It is if on-board air conditioner receives the cooling completion information of battery of battery manager transmission, i.e., electric in battery cooling procedure The temperature in pond reaches 35 DEG C, then the cooling information of completing of on-board air conditioner forwarding battery gives battery thermal management controller, and battery has cooled down At.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, on-board air conditioner preferentially meets the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2 When, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then on-board air conditioner increases battery cooling power again.And if P1 is less than or equal to P2, vehicle-mounted sky The cooling power that can reduce compressor or semiconductor heat exchange module 3 is adjusted to reduce refrigeration work consumption, to save electric energy, Huo Zhebao The refrigeration work consumption for holding compressor and semiconductor heat exchange module 3 is constant.
It is appreciated that the second regulating valve 51 is closed if interior cooling is not opened, the second blower 502 does not work.
According to one embodiment of present invention, when for heating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, And the power for heating the heater 11 of battery is increased according to difference power, and be less than or wait in temperature regulatory demand power P 1 When temperature adjusts actual power P2, keep the power of heater 11 constant.
Specifically, when work is in heating mode, battery thermal management module 1 obtains the P1 and P2 of battery 4, and is sentenced It is disconnected.If the P1 of battery 4 is greater than P2, illustrate if battery 4 can not be completed within the object time according to current heating power Heating, battery thermal management module 1 obtains the difference power between the P1 and P2 of battery 4, and increases heater 11 according to difference power Power, wherein the difference power of P1 and P2 is bigger, and the power increase of heater 11 is more, so that the temperature of battery 4 is in preset time Target temperature is increased in t.And if P1 is less than or equal to P2, it can reduce the heating power of heater 11 to save electric energy, Or keep the power of heater 11 constant.When the temperature of battery reaches the second set temperature, such as at 10 DEG C, then battery 4 heats It completes, battery manager sends the information of closing temperature regulatory function by CAN communication to battery thermal management controller, with control The stopping of heater 11 is heated.After if humidity control system entered the heating mode long period, such as after 2 hours, battery 4 Temperature still be below 10 DEG C, then battery thermal management controller suitably increases the power of heater 11, so that battery 4 is completed as early as possible Heating.
In an embodiment of the present invention, controller is also greater than temperature adjusting actual power P2 in temperature regulatory demand power P 1 When, increase the revolving speed of heat exchange blower fan.
Further, according to one embodiment of present invention, controller be also used to be less than in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, the revolving speed of reduction pump 12 or the revolving speed of holding pump 12 are constant, and adjusting in temperature need to When power P 1 being asked to be greater than temperature adjusting actual power P2, the revolving speed of pump 12 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery 4 is less than or waits In P2, the revolving speed that battery thermal management module 1 then controls pump 12 is reduced, and to save electric energy, or keeps the revolving speed of pump 12 constant.And If the P1 of battery 4 is greater than P2, except the cooling power of control compressor of air conditioner increases, the increase of the aperture of the first expansion valve 15, half Outside the power of conductor heat exchange module 3 or heater 11, the revolving speed that can also control pump 12 is improved, and is flowed with increasing in the unit time Mass of medium through cooling flowing path cross-sectional area, so that the temperature for improving battery 4 adjusts actual power P2, in object time t Interior realization temperature is adjusted.
It is adjusted below with reference to the battery temperature that specifically embodiment describes system shown in Figure 14 and Figure 15 a-15b specific Process.
1, battery is cooled down, the cooling power and semiconductor heat exchange module that cooling power is provided by compressor of air conditioner The cooling power of offer.Compressor and semiconductor heat exchange module are by cooling down refrigerant.Refrigerant to change by heat exchanger Hot device temperature decline.
The medium of battery cooling circuit temperature after heat exchanger declines, and provides cooling power for battery.
(1) battery is cooling distributes with interior cooling initial power
If battery cooling requirement power is P1, the practical cooling power of battery is P2, and P3 is the maximum of semiconductor heat exchange module Cooling power, P6 are interior cooling power, and P7 is compressor maximum cooling power.
When the sum of power of battery cooling requirement power P 1 and interior cooling requirement power P 6≤cooling function of compressor maximum Rate P7, i.e. P1+P6≤P7, and P1 < P7, P6 < P7, then compressor is run according to P1+P6 refrigeration work consumption.Control second is swollen simultaneously The aperture of swollen valve, so that interior cooling power is P6.The aperture of the first expansion valve is controlled, so that battery cooling power is P1.
As P7 < P1+P6≤P7+P3, Pe=P1+P6-P7, Pf=P1+P6-P3, then compressor is according to maximum refrigeration work consumption P7 operation, semiconductor heat exchange module are run according to cooling power Pe.The cooling power of the cooling branch of battery is P1, the cooling branch of car Road power=P6.Or semiconductor heat exchange module is run according to the cooling power P 3 of maximum, compressor is transported according to cooling power Pf Row.The aperture of the second expansion valve is controlled simultaneously, so that interior cooling power is P6, the aperture of the first expansion valve is controlled, so that electric Pond cooling power is P1.
As P1+P6 > P7+P3, then judge whether battery temperature is greater than 45 DEG C, is then preferably that battery is cold if it is greater than 45 DEG C But cooling power is provided, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to the cooling power P 3 of maximum Operation, while improving heat exchange blower fan revolving speed.Increase the aperture of the first expansion valve, so that the cooling power of the cooling branch of battery is P1 reduces the aperture of the second expansion valve, so that interior cooling branch power=P7+P3-P1.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, compressor is according to maximum refrigeration function Rate P7 operation, semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange blower fan revolving speed.It is swollen to increase second The aperture of swollen valve reduces the aperture of the second expansion valve so that the cooling power of interior cooling branch is P6, so that the cooling branch of battery Cooling power=the P7+P3-P6 on road.If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery. The revolution speed in battery cooling circuit can also be improved simultaneously, improve heat exchange power.
(2) power distribution in battery cooling procedure
If P1 > P2, and Pc=P1-P2, P1+P6+Pc < P7, then compressor increases refrigeration work consumption Pc, while increasing the The aperture of one expansion valve improves the revolving speed of heat exchange blower fan and pump, to improve battery cooling power.
If P1 > P2, and Pc=P1-P2, P7 < P1+P6+Pc≤P7+P3, Pg=P1+P6+Pc-P7, Ph=P1+P6+ Pc-P3, then compressor is run according to maximum refrigeration work consumption P7, and semiconductor takes a breath module according to cooling power Pg operation.Or pressure Contracting machine is run according to refrigeration work consumption Ph, and semiconductor takes a breath module according to the cooling operation of power P 3 of maximum.Or compressor according to The cooling power P 7 of maximum is run, and semiconductor heat exchange module increases cooling power Pc.Or compressor increases cooling power Pc, partly Conductor heat exchange module is run according to the cooling power P 3 of maximum.Or be that compressor cooling power is constant, semiconductor heat exchange module Cooling power increase Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is constant.And or Person's compressor cooling power increases 0.5*Pc, and semiconductor heat exchange module cooling power increases 0.5Pc.Or according to compressor and The ratio of the maximum cooling power of semiconductor heat exchange module respectively proportionally increases cooling power.Increase the first expansion valve simultaneously Aperture, the revolving speed of heat exchange blower fan and pump is improved, so that the cooling power of the cooling branch of battery increases Pc.
If P1 > P2, Pc=P1-P2, and P1+P6+Pc > P7+P3, then compressor is transported according to the cooling power P 7 of maximum Row, while semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving rotation speed of fan, battery thermal management heat exchange mould Block improves revolution speed, to improve heat exchange power.At this point, judging whether battery temperature is greater than 45 DEG C, if it is greater than 45 DEG C, then preferentially Cooling power is provided for battery cooling, compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to maximum cold But power P 3 is run, while improving rotation speed of fan.Increase the aperture of the first expansion valve, so that the cooling power of the cooling branch of battery For P1+Pc, the aperture of the second expansion valve is reduced, so that interior cooling branch power=P7+P3-P1-Pc, while controlling revolution speed It improves, heat exchange blower fan revolving speed improves, so that the cooling power of the cooling branch of battery increases Pc.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, compressor is according to maximum refrigeration function Rate P7 operation, semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange blower fan revolving speed.It is swollen to increase second The aperture of swollen valve reduces the aperture of the first expansion valve so that the cooling power of interior cooling branch is P6, so that the cooling branch of battery Cooling power=the P7+P3-P6 on road.If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery.
If P1≤P2, and Pc=P2-P1 then maintain compressor refrigeration power constant, semiconductor refrigerating power is maintained not Become, or reduce the refrigeration work consumption of compressor, reduces the cooling power of semiconductor heat exchange module, or reduce by the first expansion valve Aperture, or the revolving speed of heat exchange blower fan and pump is reduced, so that the cooling power of the cooling duplexure of battery declines Pc.
2, when battery heating function is opened, semiconductor heat exchange module does not work.
The heating power of battery heating circuit is by flowing through ptc heater and making the raised heating function of medium temperature Rate.
(1) set battery demand for heat power as P1, the practical heating power of battery is P2, P5 be ptc heater most greatly Thermal power.
If P1≤P5, ptc heater provides heating power according to heating power P1 for battery.
If P1 > P5, ptc heater provides heating power, while battery heat according to maximum heating power P 5 for battery It manages heat exchange module and improves revolution speed, to improve heat exchange power.
(2) in heating process, if P1≤P2, and Pc=P2-P1, then ptc heater heating power reduces Pc, while electricity Pond heat management heat exchange module reduces revolution speed, to save electric energy, or keeps current heating power constant.
During heating, if when P1 > P2, Pc=P1-P2, and P1+Pc≤P5, then ptc heater increases heating function Rate Pc, while battery thermal management module control revolution speed improves, to improve battery heating power.
If P1 > P2, Pc=P1-P2, and P5 < P1+Pc, then ptc heater is run according to maximum heating power P 5, electricity Pond heat management heat exchange module improves revolution speed, to improve heat exchange power.
The humidity control system of on-vehicle battery according to an embodiment of the present invention obtains battery by battery thermal management module Temperature regulatory demand power and temperature adjust actual power, and adjust actual power pair according to temperature regulatory demand power and temperature The refrigeration work consumption of semiconductor heat exchange module or the heats power of heater are adjusted.Thus, it is possible in on-vehicle battery temperature mistake When high or too low, battery temperature is adjusted according to the actual state of on-vehicle battery, maintains the temperature of on-vehicle battery pre- If range, avoid that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
Figure 16 is the flow chart of the temperature control method of the on-vehicle battery of the 9th embodiment according to the present invention.Wherein, such as Shown in Figure 14, on-vehicle battery humidity control system includes compressor；The condenser being connected with compressor；The vehicle being connected with compressor Interior cooling branch and the cooling branch of battery, wherein the cooling branch of battery includes heat exchanger, and the cooling branch of car includes evaporator； Semiconductor heat exchange module, semiconductor heat exchange module include colling end, fire end, the colling end and heat exchanger of semiconductor heat exchange module It is connected, semiconductor heat exchange module is to provide cooling power for heat exchanger；Battery thermal management module, battery thermal management module with change Hot device connects to form heat exchange flow path.As shown in figure 16, on-vehicle battery temperature control method the following steps are included:
S1 " ' obtains the temperature regulatory demand power P 1 of battery.
Further, according to one embodiment of present invention, the temperature regulatory demand power P 1 for obtaining battery specifically includes: The first parameter when the opening temperature adjusting of battery is obtained, and generates the first temperature regulatory demand function of battery according to the first parameter Rate.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand function of battery according to the second parameter Rate.The temperature tune of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Save demand power P1.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate battery according to the first parameter The first temperature regulatory demand power specifically include: obtain the first temperature difference Δ T between initial temperature and target temperature1.Root According to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, is passed through The second temperature regulatory demand power of following formula (2) generation battery:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
Wherein, when being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C*M/t-I2*R。
S2 " ', the temperature for obtaining battery adjust actual power P2.
According to one embodiment of present invention, the temperature for obtaining battery adjusts actual power P2 and specifically includes: acquisition is used for The inlet temperature and outlet temperature of the flow path of regulating cell temperature, and obtain the flow velocity v that medium flow field enters flow path.According to the stream of battery The inlet temperature and outlet temperature on road generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2Temperature is generated with flow velocity v Degree adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is the cross that flow path is flowed through in the unit time The mass of medium of sectional area, wherein m=v* ρ * s, v are the flow velocity of medium, and ρ is the density of medium, and s is the cross-sectional area of flow path.
S3 " ', according to temperature regulatory demand power P 1 and temperature adjust actual power P2 to semiconductor heat exchange module and/or The refrigeration work consumption of compressor is adjusted.
Further, in an embodiment of the present invention, as shown in figure 14, semiconductor heat exchange module 3 includes colling end and adds The colling end in hot end, semiconductor heat exchange module can be in parallel with heat exchanger；As shown in Figure 15 a-15b, semiconductor heat exchange module It can connect with heat exchanger.Semiconductor heat exchange module further includes the heat exchange blower fan 301 being connected with colling end or fire end, and exchange heat wind Machine is to the air draft to outside compartment.
Specifically, semiconductor mold changing block has fire end and colling end.The fire end or colling end of semiconductor heat exchange module Heat exchange blower fan is installed, to the air draft to outside compartment.Heat exchanger can be changed as shown in Figure 14 and 15a-15b for plate heat exchanger There are two roads for hot utensil, and wherein first pipe is connected with compressor, and second pipe is connected with battery thermal management module, first pipe Middle stream is refrigerant, and what is flowed in second pipe is medium.
Compressor and condenser constitute air conditioner refrigerating branch, and evaporator, the second expansion valve, the second electronic valve constitute interior cold But branch, heat exchanger, the first expansion valve, the first electronic valve constitute the cooling branch of battery.
When cooling down to battery, as shown in figure 14, colling end can be in parallel with heat exchanger, as shown in fig. 15 a, cooling End can also be connected between heat exchanger and the first expansion valve, and as illustrated in fig. 15b, colling end can also be connected on heat exchanger and compressor Between.
It is divided into 2 independent cooling branches inside on-board air conditioner since condenser, respectively interior cooling branch and electricity Pond cools down branch.The cooling branch of car mainly passes through evaporator and provides refrigeration work consumption, the cooling branch of battery for the space in compartment Mainly refrigeration work consumption is provided for battery by heat exchanger.Wherein the cooling power of the cooling branch of battery mainly has 2 sources, wherein One is that the refrigerant of compressor flows into heat exchanger, provides cooling power for heat exchanger, the other is semiconductor heat exchange module It is heat exchanger 2 for cooling power that colling end, which carries out refrigeration,.It is cooling that first electronic valve and the second electronic valve are respectively used to control battery Branch being opened and closing with interior cooling branch.First expansion valve and the second expansion valve can be respectively used to the cooling branch of control battery Road and interior cooling branch and cold medium flux, to control the cooling power of the cooling branch of battery and interior cooling branch respectively.
When the starting of the refrigerating function of battery, there is a flow direction, the cooling branch of car are as follows: compressor-condensation in refrigerant The second electronic valve of device-- the second expansion valve-evaporator-compressor；In Figure 14, the cooling branch of battery are as follows: compressor-condensation The first electronic valve of device-- the first expansion valve-heat exchanger-compressor.Refrigerant is after heat exchanger, temperature decline, battery medium After flowing through heat exchanger, temperature decline provides cooling power for battery cooling.Meanwhile colling end may be that battery provides cooling Power, semiconductor cool down the flow direction of refrigerant in branch are as follows: colling end-heat exchanger-colling end.After refrigerant flows through heat exchanger, Heat exchange temperature decline, refrigerant temperature are increased, after semiconductor heat exchange module cools down the higher refrigerant of portion temperature, weight Heat exchanger newly is flowed through, so that heat exchange temperature declines, when battery medium flows through heat exchanger, medium temperature decline.It is possible thereby to half Conductor heat exchange module improves the refrigeration work consumption of battery cooling circuit.
And scheme shown in Figure 15 a-15b is to be directly accessed colling end in the cooling branch of battery, and semiconductor exchanges heat Module and heat exchanger 2 are to be connected in series.In Figure 15 a, after refrigerant first passes through the colling end of semiconductor heat exchange module, temperature decline, Using heat exchanger, so that the cooling power of the cooling branch of battery is higher.In Figure 15 b, refrigerant first passes through heat exchanger, so that refrigerant Temperature increases, and is then flowing through colling end, so that refrigerant temperature declines, improves the refrigeration work consumption of air-conditioning system, alleviates vehicle Carry the refrigeration burden of air-conditioning.
In carrying out cooling/or heating process to battery, the temperature regulatory demand power P 1 and temperature of battery are also obtained in real time Degree adjusts actual power P2, wherein the temperature of battery is adjusted to setting within the object time by temperature regulatory demand power P 1 Target temperature, it is desirable to provide to the power of battery, battery temperature adjusts actual power P2 and currently carries out temperature tune to battery When section, the actual power that battery obtains, target temperature and object time are setting value, can be according to the actual conditions of on-vehicle battery It is preset, for example, target temperature can be set at 35 DEG C or so when cooling down to battery, when being heated to battery, Target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Then, according to P1 and P2 to semiconductor heat exchange mould The refrigeration work consumption of block is adjusted, so that battery can complete temperature adjusting within the object time, ties up the temperature of on-vehicle battery It holds in preset range, avoids that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
According to one embodiment of present invention, above-mentioned temperature control method can also include: the temperature for obtaining battery, sentence Whether the temperature in power-off pond is greater than the first temperature threshold；When the temperature of battery is greater than the first temperature threshold, into refrigerating mode； When the temperature of battery is less than or equal to the first temperature threshold, continue to judge whether the temperature of battery is less than second temperature threshold value； When the temperature of battery is less than second temperature threshold value, into heating mode.Wherein, the first temperature threshold is greater than second temperature threshold Value.
Specifically, after vehicle powers on, the temperature of battery is obtained in real time, and is judged.If it is determined that the temperature of battery is high In 40 DEG C, illustrate that the battery temperature is excessively high at this time, to avoid high temperature from having an impact the performance of the battery, needs to carry out battery Cooling processing, into refrigerating mode.Control the first electronic valve of control is opened, and the power supply of semiconductor refrigerating module forward direction passes through cooling End cools down the refrigerant for flowing through heat exchanger.When cooling down to battery, the first electronic valve is opened, cooling by heat exchanger Medium in pipeline, so that medium and battery carry out heat exchange, the temperature for completing battery is adjusted.
And if the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery at this time is too low, to avoid low temperature to the performance of battery It has an impact, needs to carry out battery heating treatment, humidity control system enters heating mode, and control heater is opened, simultaneously The first electronic valve is kept to be in close state, by the medium in heater heating-cooling coil road, so that medium and battery carry out Heat exchange, the temperature for completing battery are adjusted.
According to one embodiment of present invention, when for refrigerating mode, according to temperature regulatory demand power P 1 and temperature tune The refrigeration work consumption of semiconductor heat exchange module and/or compressor, which is adjusted, in section actual power P2 specifically includes: judging temperature tune Whether section demand power P1, which is greater than temperature, adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts reality Power P 2 then obtains the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and according to difference power Increase the refrigeration work consumption of semiconductor heat exchange module and/or compressor；If temperature regulatory demand power P 1 is less than or equal to temperature Actual power P2 is adjusted, then reduces the refrigeration work consumption of semiconductor heat exchange module and/or compressor, or keep semiconductor heat exchange module And/or the refrigeration work consumption of compressor is constant.
Further, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and root are obtained It is specifically included according to the refrigeration work consumption that difference power increases semiconductor heat exchange module: when temperature regulatory demand power P 1 is adjusted greater than temperature Actual power P2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module with full refrigeration work consumption Operation.Wherein, the first preset temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.
Actual power P2 is adjusted when temperature regulatory demand power P 1 is greater than temperature, and the temperature of battery is less than the first default temperature When spending threshold value, further judge whether temperature reaches air-conditioning set temperature in compartment；If not up to air-conditioning set temperature, increases Add the refrigeration work consumption of semiconductor heat exchange module.
Actual power P2 is adjusted when temperature regulatory demand power P 1 is greater than temperature, and the mean temperature of battery is greater than first in advance If when temperature threshold, above-mentioned method further include: reduce the refrigeration work consumption of interior cooling branch, while increasing the cooling branch of battery Refrigeration work consumption aperture.First preset temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.It can lead to The aperture for increasing the first expansion valve is crossed, while reducing the aperture of the second expansion valve to reduce the refrigeration work consumption of interior cooling branch, Increase the refrigeration work consumption aperture of the cooling branch of battery simultaneously.
Specifically, in battery cooling procedure, the temperature regulatory demand power P 1 of control cell and the temperature of battery are practical 2 information of power P judges whether the temperature of battery reaches if temperature regulatory demand power P 1 is greater than temperature actual power P2 45 DEG C (higher temperature), if the temperature of battery reaches 45 DEG C, the aperture of the second expansion valve is reduced, increases the first expansion valve Aperture, to reduce interior cold medium flux, the cold medium flux of the cooling branch of increase battery, to adjust the cooling and interior cooling of battery Refrigerating capacity distribution, meanwhile, control semiconductor heat exchange module is run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, to alleviate The cooling coolant quantity of car reduces the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high rotary speed working. If the temperature of battery is not higher than 45 DEG C, judges whether the temperature in compartment reaches air-conditioning set temperature, if reached, subtract The aperture of few second expansion valve, increases the aperture of the first expansion valve, if the temperature in compartment does not reach air-conditioning set temperature, Then preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 and temperature adjust the difference between actual power P2 at this time Value part cooling power is provided by semiconductor heat exchange module.In battery refrigerating function opening process, real time monitoring battery pack is real The real-time cooling power information of border cooling power and semiconductor heat exchange module, and it is cold according to interior cooling power demand and battery pack But power requirement information determines the aperture between the first expansion valve and the second expansion valve, so that regulating cell is cooling and car is cold But the refrigerant distribution in circuit, so that the refrigeration work consumption for the cooling branch of battery that on-board air conditioner provides is mentioned plus semiconductor heat exchange module The refrigeration work consumption of confession is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if the temperature of battery reaches 35 DEG C, then battery is cooling completes.
Battery mean temperature has been done herein and has been handled by different level, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature reaches 35 DEG C, then battery is cooling is completed, and works as electricity When pond temperature reaches 45 DEG C of higher temperatures, preferentially meet the cooling refrigeration capacity requirement of battery.In addition, when P1 is greater than P2, if Battery temperature is no more than 45 DEG C, then the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is sufficient, And reaching balance, then on-board air conditioner increases battery cooling power again.
And if P1 is less than or equal to P2, it can reduce the refrigeration work consumption of semiconductor heat exchange module, to save electric energy, or Person keeps the refrigeration work consumption of semiconductor heat exchange module constant.
According to one embodiment of present invention, in battery cooling procedure, judge whether temperature regulatory demand power P 1 is big Actual power P2 is adjusted in temperature；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, temperature is obtained Regulatory demand power P 1 and temperature adjust the difference power between actual power P2, and increase the cold of compressor of air conditioner according to difference power But power；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, compressor of air conditioner is reduced Cooling power, or keep the cooling power of compressor of air conditioner constant.
According to one embodiment of present invention, as shown in Figure 14 and 15a-15b, battery thermal management module includes heater, For heating the medium in heat exchange flow path.When for heating mode, carried out by the medium that control heater is exchanged in hot flowpath Heating.
When for heating mode, actual power is adjusted to semiconductor heat exchange module according to temperature regulatory demand power and temperature Heating power be adjusted and specifically include: judge whether temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2； If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, temperature regulatory demand power P 1 and temperature tune are obtained The difference power between actual power P2 is saved, and increases the heating power for being used for heater according to difference power；If temperature, which is adjusted, to be needed It asks power P 1 to be less than or equal to temperature and adjusts actual power P2, then keep the heating power of heater constant.
Specifically, when working in heating mode, the P1 and P2 of battery are obtained, and judged.If the P1 of battery is big In P2, illustrate to obtain if the heating of battery can not be completed within the object time according to current heating power battery P1 and Difference power between P2, and according to the power of difference power increase heater, wherein the difference power of P1 and P2 is bigger, heater Power increase is more, so that the temperature of battery is increased to target temperature in preset time t.And if P1 is less than or equal to P2, The heating power of heater sum be can reduce to save electric energy, or keep the power of heater constant.When the temperature of battery reaches Second set temperature, such as at 10 DEG C, then battery heating is completed, control heater stopping is heated.If temperature adjusts system After system enters the heating mode long period, such as after 2 hours, the temperature of battery still is below 10 DEG C, then suitably increases heater Power so that battery is completed to heat up as early as possible.
In an embodiment of the present invention, semiconductor heat exchange module is also greater than temperature in temperature regulatory demand power P 1 and adjusts in fact When the power P 2 of border, increase the revolving speed of heat exchange blower fan.
When humidity control system enters heating mode or refrigerating mode, if the P1 of battery is less than or equal to P2, The revolving speed of control pump reduces, and to save electric energy, or keeps the revolving speed of pump constant.And if the P1 of battery is greater than P2, except control The cooling power of compressor increases, the aperture of the first regulating valve increases, outside the power of semiconductor heat exchange module or heater, also The revolving speed that can control pump improves, to increase the mass of medium for flowing through cooling flowing path cross-sectional area in the unit time, to improve The temperature of battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, can be according to the virtual condition essence of each battery The heating power and cooling power for really controlling each battery, adjust temperature when battery temperature is excessively high or when too low Section, so that the temperature of battery is maintained preset range, avoid occur due to temperature influence on-vehicle battery performance.
In addition, the present invention also proposes a kind of non-transitorycomputer readable storage medium, it is stored thereon with computer program, The program realizes above-mentioned temperature control method when being executed by processor.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, the temperature regulatory demand function of available battery Rate and temperature adjust actual power, then adjust actual power to semiconductor heat exchange mould according to temperature regulatory demand power and temperature The refrigeration work consumption of block and/or compressor is controlled, and temperature to be adjusted when the temperature is excessively high in on-vehicle battery, makes vehicle mounted electric The temperature in pond maintains preset range, avoids that there is a situation where due to the excessively high influence on-vehicle battery performance of temperature.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (10)

1. a kind of humidity control system of on-vehicle battery characterized by comprising
Compressor；
The condenser being connected with the compressor；
The cooling branch of the car being connected with the compressor and the cooling branch of battery, wherein the cooling branch of the battery includes changing Hot device, the interior cooling branch includes evaporator, and the compressor is connected with the heat exchanger and evaporator；
Semiconductor heat exchange module, the semiconductor heat exchange module include colling end, fire end, the semiconductor heat exchange module it is cold But end is connected with the heat exchanger, and the semiconductor heat exchange module is to provide cooling power for the heat exchanger；
Battery thermal management module, the battery thermal management module connect to form heat exchange flow path with the heat exchanger；
Controller, the controller are connect respectively at the semiconductor heat exchange module, the battery thermal management module.
2. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the semiconductor heat exchange module Colling end and the heat exchanger are connected in the cooling branch road of the battery in parallel, wherein the entrance of the cold end and the heat exchange The first end of device is connected, and the outlet of the colling end is connected with the second end of the heat exchanger.
3. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the semiconductor heat exchange module The cooling branch road of the battery is connected in series in colling end and the heat exchanger, wherein the colling end of the semiconductor heat exchange module Entrance be connected with the outlet of the first expansion valve, the outlet of the colling end of the semiconductor heat exchange module and the of the heat exchanger Two ends are connected, alternatively, the entrance of colling end of the semiconductor heat exchange module is connected with the first end of heat exchanger, the semiconductor The outlet of the colling end of heat exchange module is connected with the entrance of the compressor.
4. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the semiconductor heat exchange module is also Including the heat exchange blower fan being connected with institute fire end, the heat exchange blower fan is to the air draft to outside compartment.
5. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the cooling branch packet of the battery It includes: with concatenated first electronic valve of the heat exchanger and expansion valve.
6. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the interior cooling branch also wraps It includes: the second expansion valve and the second electronic valve with the evaporator series.
7. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the battery thermal management module packet It includes and pump, the first temperature sensor, second temperature sensor and the flow sensor to exchange heat on flow path is set, the pump, First temperature sensor, second temperature sensor and flow sensor are connect with the controller；Wherein:
The pump is for making the media flow in the heat exchange flow path；
First temperature sensor is used to detect the inlet temperature for the medium for flowing into the on-vehicle battery；
The second temperature sensor is used to detect the outlet temperature for the medium for flowing out the on-vehicle battery；
The flow sensor is used to detect the flow velocity of the medium in the heat exchange flow path.
8. the humidity control system of on-vehicle battery as claimed in claim 7, which is characterized in that the battery thermal management module is also Including the media Containers being arranged on the heat exchange flow path, the media Containers are for storing and providing Jie to the heat exchange flow path Matter.
9. the humidity control system of on-vehicle battery as claimed in claim 7, which is characterized in that the battery thermal management module is also Including heater, the heater is connect with the controller, for heating the medium in the heat exchange flow path.
10. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that further include described for detecting The battery status detection module of the electric current of on-vehicle battery, the controller are also connected with the battery status detection module.
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Publication number Priority date Publication date Assignee Title
US20070022772A1 (en) * 2005-07-26 2007-02-01 Ford Global Technologies, Llc A cooling system and method for cooling a battery in a vehicle
CN201332111Y (en) * 2009-01-09 2009-10-21 东莞市一信通信科技有限公司 Heat preserving battery cabinet
CN202076386U (en) * 2010-12-31 2011-12-14 比亚迪股份有限公司 Battery temperature management system and automobile
CN103496319A (en) * 2013-10-14 2014-01-08 上海交通大学 Temperature regulating device of new energy automobile power storage battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070022772A1 (en) * 2005-07-26 2007-02-01 Ford Global Technologies, Llc A cooling system and method for cooling a battery in a vehicle
CN201332111Y (en) * 2009-01-09 2009-10-21 东莞市一信通信科技有限公司 Heat preserving battery cabinet
CN202076386U (en) * 2010-12-31 2011-12-14 比亚迪股份有限公司 Battery temperature management system and automobile
CN103496319A (en) * 2013-10-14 2014-01-08 上海交通大学 Temperature regulating device of new energy automobile power storage battery

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