CN109599618A - The temperature control method and humidity control system of on-vehicle battery - Google Patents

The temperature control method and humidity control system of on-vehicle battery Download PDF

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Publication number
CN109599618A
CN109599618A CN201710923038.XA CN201710923038A CN109599618A CN 109599618 A CN109599618 A CN 109599618A CN 201710923038 A CN201710923038 A CN 201710923038A CN 109599618 A CN109599618 A CN 109599618A
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China
Prior art keywords
battery
temperature
power
heat exchange
cooling
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Granted
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CN201710923038.XA
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CN109599618B (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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    • 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
    • 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
    • H01M10/62—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
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H01M10/6564—Gases with forced flow, e.g. by blowers using compressed gas
    • 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
    • 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
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • 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
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6572—Peltier elements or thermoelectric devices
    • 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 system of on-vehicle battery, including compressor, heat exchangers；Compressor, compressor are connect with heat exchanger；The condenser being connected with compressor；Battery thermal management module connect to form heat exchange flow path with heat exchanger；Semiconductor heat exchange module, including colling end, fire end and heat exchange blower fan, the one of them of colling end or fire end is connect with heat exchanger, for being heat exchanger heating power/refrigeration work consumption, heat exchange blower fan is connected with the another one of colling end or fire end, and heat exchange blower fan is to the air draft to outside compartment；Controller, controller are connect with semiconductor heat exchange module, compressor and battery thermal road module respectively.The system can be adjusted battery temperature when on-vehicle battery is too high or too low for temperature, and 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.

Description

The temperature control method and humidity control 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, it for the area of climatic environment sweltering heat, needs to increase battery cooling system in electric car, with Its temperature is reduced when the temperature is excessively high in on-vehicle battery；For the area of climatic environment cold, need to increase electricity in electric car Pond heating system, to increase its temperature when on-vehicle battery temperature is too low.
However, hot, winter and cold area for summer, the above method, which cannot be considered in terms of, solves on-vehicle battery temperature mistake The high and too low problem of temperature, and it is more coarse to the adjusting method of on-vehicle battery temperature, it can not be according to the reality of on-vehicle battery Situation accurately controls its heating power and cooling power, thus the temperature that not can guarantee on-vehicle battery maintain it is default In range.
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 too high or too low, battery temperature is adjusted, so that the temperature of on-vehicle battery is maintained preset range, avoids There is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
In order to achieve the above objectives, the embodiment of the present invention proposes a kind of humidity control system of on-vehicle battery, comprising: changes Hot device；Compressor, the compressor are connect with the heat exchanger；The condenser being connected with compressor；Battery thermal management module, The battery thermal management module connect to form heat exchange flow path with the heat exchanger；Semiconductor heat exchange module, the semiconductor heat exchange Module includes colling end, fire end and heat exchange blower fan, and the one of them of the colling end or fire end is connect with the heat exchanger, For for the heat exchanger heating power/refrigeration work consumption, the another one phase of the heat exchange blower fan and the colling end or fire end Even, the heat exchange blower fan is to the air draft to outside compartment；Controller, the controller respectively with the semiconductor heat exchange module, institute Compressor is stated to connect with battery thermal road 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, root 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, avoids sending out The case where raw influence on-vehicle battery performance excessively high due to temperature.
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 The embodiment of attached drawing 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, the system include: battery thermal management module 1, heat exchanger 2, with 2 semiconductor heat exchange module 3 of heat exchanger, On-board air conditioner and controller (being specifically illustrated 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 and heat exchanger 2 connect It connects to form heat exchange flow path.Semiconductor heat exchange module 3 include colling end, fire end fire end and heat exchange blower fan 501, fire end and The one of them of colling end is connected with heat exchanger 2, to provide heating power/cooling power, the corresponding cooling of heat exchange blower fan 501 The setting of the other of end or fire end.Controller respectively with semiconductor heat exchange module 3, battery thermal management module 1 and vehicle-mounted sky Connection is adjusted, controller is used to obtain the temperature regulatory demand power P 1 of battery 4 and temperature adjusts actual power P2, and according to temperature It spends regulatory demand power P 1 and temperature adjusts actual power P2 and carries out to the power of semiconductor heat exchange module and/or on-board air conditioner It adjusts.
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 illustrated in figures 2 a-2b, semiconductor heat exchange module 3 can also be connected on and change Between hot 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, heat exchange Blower 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 control semiconductor changes Thermal modules 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, cooling termination Enter cooling pipe, colling end starts to freeze, to cool down to the medium in cooling pipe, to cool down to battery 4, together When heat exchange blower fan 301 heat of fire end fire end is blowed 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 heating mode, and 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 1 b, fire end access cooling pipe, and fire end is begun to warm up, to cold But the medium in pipeline is heated, and 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 is that semiconductor heat exchange module 3 is positive Power supply, 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 adjust actual power P2 i.e. currently to battery into When trip temperature is adjusted, the actual temperature regulation power that battery 4 obtains, target temperature and object time are setting value, can basis The actual conditions of on-vehicle battery are preset, for example, target temperature can be set at 35 DEG C or so when cooling down to battery, 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 be with 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 target Interior completion temperature is adjusted, and the temperature of on-vehicle battery is made to maintain preset range, avoids occurring due to shadow too high or too low for temperature The case where ringing 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 in the first air duct 100 and first blower 501 corresponding with heat exchanger 2 are set, the first blower 501 is used Refrigeration work consumption is provided in heat exchanging device 2.
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, for heat exchanger 2 Cooling power is provided, and then the medium exchanged in hot flowpath is cooled down, and achievees the purpose that cooling battery 4.Controller can also be with Opening or turning off for the first regulating valve 51 is controlled, and the aperture of the first regulating valve 51 can be adjusted.First blower 501 by controller control, and wind speed is adjustable.Controller can be by adjusting the aperture regulation of the first regulating valve 51 for cooling down The cooling power of battery.
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, control Device controls the second regulating valve 52 and opens, and the second blower 502 work, the second blower 502 can blow to the cooling wind of air-conditioner air outlet 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 heat exchange flow path on pump 12, the first temperature sensor 14, second temperature sensor 15 and flow sensor 16, pump 12, First temperature sensor 14, second temperature sensor 15 and flow sensor 16 are connect with controller；Wherein: pump 12 is for mentioning For 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.
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 practical function according to the density of the specific heat capacity of medium, medium Rate 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 mould Block 3 and heat exchange blower fan 301 are controlled.Battery manager can be managed battery 4, the voltage of acquisition battery 4, Electric current and temperature information, and according to the specific heat capacity C of the target temperature of battery, object time t and battery, battery mass M, The internal resistance R of battery, to calculate temperature regulatory demand power P 1.On-board air conditioner controller and the first regulating valve 51, the second regulating valve 52, the 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, the first wind The refrigeration work consumption of the revolving speed and on-board air conditioner of machine 501 and the second blower 502 is controlled.On-board air conditioner controller and battery Manager and battery thermal management device carry out CAN communication, with the temperature regulatory demand power P 1 and electricity obtained according to battery manager The temperature that pond thermal management controller obtains adjusts actual power P2 to the wind speed of the first blower 501, the second blower 502 and to the The aperture of one regulating valve 51 and the second regulating valve 52 is adjusted.Semiconductor control and battery manager and battery thermal management Device carries out CAN communication, is obtained with the temperature regulatory demand power P 1 and battery thermal management controller that are obtained according to battery manager Temperature adjust actual power P2 the power supply direction of semiconductor heat exchange module and power are controlled.
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 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 Two temperature thresholds.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, first 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 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, humidity control system enters refrigerating mode, on-board air conditioner Controller control the first regulating valve 51 of control is opened, and the cooling wind of on-board air conditioner is blowed to heat exchanger 2 by the first blower 501, with right Medium in heat exchanger 2 in cooling pipe is cooled down, and medium again cools down battery 4 through battery thermal management module 1.When When cooling down to battery, the first regulating valve 51 is opened, and cooling airflow is to are as follows: the first regulating valve 51-the of air-conditioner air outlet- One 501-heat exchanger of blower 2.The cooling branch of car are as follows: air-conditioner air outlet-the second regulating valve 502-vehicle of the 52-the second blower Compartment.
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-half Conductor 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 exchangers 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 controls Device keeps the first regulating valve 51 to be in close state, in scheme shown in Fig. 1 b, medium flow direction are as follows: 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-semiconductor heat exchange modules (fire end fire end)-heater 11 (unlatching).In scheme shown in Fig. 2 b, medium flow direction Are as follows: 2-semiconductor of heat exchanger heat exchange module, 3 (fire end)-heater 11 (unlatching)-the 12-the first temperature sensor of pump 14-battery 4-second 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 section of flow path Product.
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 in preset time Interior average current I, and according to the second temperature regulatory demand power of formula (2) calculating battery 4.Then, battery manager root According to battery 4 the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 (i.e. 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 control Device processed obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains flow sensor The flow rate information of 16 detections adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.Finally, controller device root It is adjusted according to P1, P2 of battery 4 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.
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) i.e. 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 Process can generate heat, and the heat of this part can also be directly obtained by detecting the average current I of battery 4, pass through formula (3) i.e. I2* R directly calculates the heating power of present battery 4, i.e. second temperature regulatory demand power.Cooling of the invention Deadline is that (t can change according to user demand either vehicle actual design situation) is set based on object time t. After object time t required for cooling complete has been determined, so that it may which the temperature for estimating out 4 cooling requirement of present battery is adjusted Demand power 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 adjust 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 pass through formula (4) i.e. Δ T3*C*m1 by the practical cooling power P2 of battery It is calculated, 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 battery 4 Quality.But since the quality of general battery is larger, so temperature change is unobvious in the unit time, the long period is needed It can detecte out the temperature difference, do not meet requirement of real-time, 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 function When rate P1 is less than or equal to temperature adjusting actual power P2, reduce the refrigeration function of semiconductor heat exchange module 3 and/or on-board air conditioner Rate keeps 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 Battery manager send battery temperature regulatory demand power P 1, and the information be transmitted to battery thermal management controller and Semiconductor control.In battery cooling procedure, on-board air conditioner controller controls the first regulating valve 51 and the second regulating valve 52 is opened It opens, while controlling the first blower 501 and the start-up operation of the second blower 502.On-board air conditioner controller receives battery thermal management control The temperature of water temperature information and battery that device is sent adjusts actual power P2, and the information is transmitted to battery manager and is partly led Body changer controller.In battery cooling procedure, the temperature regulatory demand power P 1 and battery of on-board air conditioner controller control cell Temperature actual power P2 information, if temperature regulatory demand power P 1 be greater than temperature actual power P2, judge the temperature of battery Whether degree reaches 45 DEG C (higher temperatures), if the temperature of battery reaches 45 DEG C, on-board air conditioner controller reduces second and adjusts The aperture of valve 52 increases the aperture of the first regulating valve 61, reduces interior cooling wind flow, increases the cooling of the cooling branch of battery Wind flow, to adjust the cooling and interior cooling refrigerating capacity distribution of battery, meanwhile, semiconductor control controls semiconductor heat exchange Module 3 is run with the operation of full refrigeration work consumption, i.e., maximum refrigeration work consumption, reduces caused vehicle to alleviate interior cooling coolant quantity The influence that interior cooling effect reduces, and heat exchange blower fan is controlled 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, on-board air conditioner controller reduces by the second regulating valve 602 aperture increases the aperture of the first regulating valve 601, excellent if the temperature in compartment does not reach air-conditioning set temperature First 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 3.In battery refrigerating function opening process, on-board air conditioner controller is real When monitor the real-time cooling power information of battery pack practical cooling power and semiconductor heat exchange module, and according to the cooling function of car Rate demand and battery pack cooling power demand information, determine the aperture between the first regulating valve 51 and the second regulating valve 52, so as to The cooling air quantity distribution of the cooling and interior cooling circuit of regulating cell, so that the battery cooling wind circuit that on-board air conditioner provides Refrigeration work consumption is equal to the temperature regulatory demand power P 1 of battery plus the cooling power of semiconductor heat exchange module 3.It is cooling in battery In the process, 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, 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 When P2, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling function in compartment Rate is sufficient, and reaches 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 function between the temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained Rate is poor, and is increased according to difference power for heating the heater 11 of battery and/or the power of semiconductor heat exchange module 3, Yi Ji When temperature regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, heater 11 and/or semiconductor heat exchange are kept The power of module 3 is constant.
Specifically, when work is in heating mode, controller obtains the P1 and P2 of battery 4, and is judged.If electric The P1 in pond 4 is greater than P2, illustrates if can not complete the heating of battery 4 within the object time according to current heating power, control Device obtains the difference power between the P1 and P2 of battery 4, and increases heater 11 and/or semiconductor heat exchange module 3 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, with The temperature of battery 4 is set to be 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 semiconductor heat exchange module 3 heating power to save electric energy, or keep 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, battery management Device sends the information of closing temperature regulatory function by CAN communication to battery thermal management controller, to control the stopping of heater 11 It is heated.If the temperature of battery 4 is still after humidity control system enters the heating mode long period, such as after 2 hours Lower than 10 DEG C, then battery thermal management controller suitably increases the power of heater 11 and/or semiconductor heat exchange module 3, so that electric Heating is completed as early as possible in pond 4.
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 It is constant.And if the P1 of battery 4 is greater than P2, except control air conditioner refrigerating power increases, the increase of the aperture of the first regulating valve 61, half Outside the power of conductor heat exchange module 3 or heater 11 increases, the revolving speed that can also control pump 12 is improved, when increasing unit It is interior to flow through the mass of medium of cooling flowing path cross-sectional area, so that the temperature for improving battery 4 adjusts actual power P2, in mesh It marks and realizes that temperature is adjusted in time t.
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.The cooling branch of car Cooling power 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 simultaneously The aperture of regulating valve, 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, and car is cooling Branch 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 Aperture, 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.Such as Fruit determines that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably the cooling function of interior offer Rate, compressor are run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is run according to the cooling power P 3 of maximum, are mentioned simultaneously High heat exchange blower fan revolving speed.Increase the aperture of the second regulating valve, improve the revolving speed of the second blower, so that interior cooling branch is cold But power 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 has reached set temperature, then preferentially meets the cooling power of battery.It can also improve in battery cooling circuit simultaneously Revolution speed, 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 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, and semiconductor takes a breath module according to the cooling operation of power P 3 of maximum.Or compressor is pressed It is run according to the cooling power P 7 of maximum, 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, semiconductor changes The cooling power of thermal modules increases Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is not Become.Or compressor cooling power increases 0.5*Pc, semiconductor heat exchange module cooling power increases 0.5Pc.Or according to The ratio of the maximum cooling power of compressor and semiconductor heat exchange module respectively proportionally increases cooling power.Increase simultaneously The aperture of first regulating valve improves the revolving speed of the first blower, heat exchange blower fan and pump, so that the cooling power of the cooling branch of battery Increase 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 Module 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 Being preferably that battery is cooling provides cooling power, and compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to most Big cooling power P3 operation, while improving rotation speed of fan.Increase the aperture of the first regulating valve, improves the revolving speed of the first blower, make The cooling power for obtaining the cooling branch of battery is P1+Pc, reduces the aperture of the second regulating valve, improves the revolving speed of the second blower, so that Cooling branch power=the P7+P3-P1-Pc of car, while revolution speed raising is controlled, heat exchange blower fan revolving speed improves, so that battery is cold But the cooling power of branch increases Pc.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature also not up to sets temperature Degree, then be preferably it is interior cooling power is provided, compressor is run according to maximum refrigeration work consumption P7, semiconductor heat exchange module according to The cooling power P 3 of maximum is run, while improving heat exchange blower fan revolving speed.Increase the aperture of the second regulating valve, improves the second blower Revolving speed reduces the aperture of the first regulating valve so that the cooling power of interior cooling branch is P6, so that the cooling branch of battery Cooling power=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 under the cooling power of the cooling duplexure of battery Pc drops.
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 pump and turns 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 Power P c, 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 according to Maximum heating power P 5 provides heating power for battery, and semiconductor heat exchange module increases heating power Pc.It or is heater Heating power is constant, and the heating power of semiconductor heat exchange module increases Pc.Or heater heating power increases Pc, partly leads The heating power of body heat exchange module is constant.Or ptc heater heating power increases 0.5*Pc, semiconductor heat exchange module adds Thermal power increases 0.5Pc, or respectively according to the ratio of ptc heater and the maximum heating power of semiconductor heat exchange module Proportionally increase heating power.Heat exchange blower fan revolving speed is improved simultaneously, and battery thermal management heat exchange module improves revolution speed, to mention High heat exchange power, so that battery heating power increases Pc.
If P1 > P2, Pc=P1-P2, and P1+Pc > P5+P4, then ptc heater is according to maximum heating power P 5 Battery provides heating power, while semiconductor heat exchange module provides heating power according to maximum heating power P 4 for battery, simultaneously Heat exchange blower fan revolving speed is improved, 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 It is lower, 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 different to be semiconductor heat exchange module 3 and heat exchanger 2 for 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 has air-conditioner air outlet, empty It recalls and is formed with the first air duct between air port and heat exchanger；Semiconductor heat exchange module, semiconductor heat exchange module include colling end, The one of them of fire end fire end and heat exchange blower fan, fire end and colling end is connected with heat exchanger, to provide heating function Rate/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 of on-vehicle battery Spend adjusting 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 of battery according to the first parameter Power.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand of battery according to the second parameter Power.The temperature of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Spend regulatory demand power P 1.
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 battery The inlet temperature and outlet temperature of flow path generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2It is raw with flow velocity v Actual power P2 is adjusted at temperature.
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 section of flow path Product.
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 illustrated in figures 2 a-2b, semiconductor heat exchange module can also go 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 right Medium in heat exchange flow path is cooled down, and to cool down to battery, while heat exchange blower fan blows the heat of fire end fire end 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 heating mode, Semiconductor heat exchange module and battery thermal management module are started to work, and semiconductor heat exchange module reverse power supply adds as shown in Figure 1 b Cooling pipe is accessed in hot end, 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.
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 practical feelings of on-vehicle battery Condition is preset, for example, target temperature can be set at 35 DEG C or so, heat when to battery when cooling down to battery When, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Then, semiconductor is changed according to P1 and P2 The power of thermal modules 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.
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 wind being connected with the first regulating valve Machine, the first blower freeze 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 blow to heat exchanger, cooled down with the medium in cooling pipe in heat exchanging device, medium is again through battery thermal management mould Block cools down battery.The cooling power of battery can be used to cool down by adjusting the aperture regulation of the first valve.In cooling procedure In be 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, So that the temperature of on-vehicle battery is maintained preset range, avoids occurring due to influence on-vehicle battery performance too high or too low for temperature Situation.
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, and second Blower 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 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, 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 cooling mould Formula；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 Heat exchanger is blowed to, 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, It is cooled down with the medium exchanged in hot flowpath, 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 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 power of semiconductor heat exchange module and/or on-board air conditioner；If temperature regulatory demand power P 1 is less than or equal to temperature tune Actual power P2 is saved, then reduces the refrigeration work consumption of semiconductor heat exchange module and/or on-board air conditioner, or keeps semiconductor heat exchange mould The refrigeration work consumption of block and/or 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 specifically includes according to the power that difference power increases semiconductor heat exchange module: being adjusted in fact when temperature regulatory demand power P 1 is greater than temperature Border power P 2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module and transported with full refrigeration work consumption Row.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, Increase 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 cold But refrigerating capacity distribution, while controlling semiconductor heat exchange module and being run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, with Alleviate interior cooling coolant quantity and reduce the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high revolving speed work Make.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, The aperture of the second regulating valve is reduced, the aperture of the first regulating valve is increased, if the temperature in compartment does not reach air-conditioning setting temperature Degree, then preferential to meet interior refrigeration capacity requirement, temperature regulatory demand power P 1 and temperature are adjusted between actual power P2 at this time Difference portion cooling power, provided by semiconductor heat exchange module.In battery refrigerating function opening process, on-board air conditioner is real When monitor the real-time cooling power information of battery pack practical cooling power and semiconductor heat exchange module, and according to the cooling function of car Rate demand and battery pack cooling power demand information, determine the aperture between the first regulating valve and the second regulating valve, to adjust The cooling air quantity distribution of the cooling and interior cooling circuit of battery, so that the refrigeration function in the battery cooling wind circuit that on-board air conditioner provides Rate is equal to the temperature regulatory demand power P 1 of battery plus the cooling power of semiconductor heat exchange module.In battery cooling procedure, If the temperature of battery reaches 35 DEG C, 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 When P2, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling function in compartment Rate is sufficient, and reaches 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 Whether P1, which is greater than temperature, adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, The difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, and is used for according to difference power increase The heating power of semiconductor heat exchange module；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, Then keep the heating power of semiconductor heat exchange module 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 used for detection stream Enter 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 Degree；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 P 1 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 refrigeration work consumption of control on-board air conditioner, the aperture increase of the first regulating valve, semiconductor heat exchange module or heater Outside power, 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, Actual power P2 is adjusted to improve the temperature of battery, 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 Target temperature is increased in t.And if P1 is less than or equal to P2, can reduce heater and/or semiconductor heat exchange module plus Thermal 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 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.
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, the temperature of on-vehicle battery is made to maintain preset range, Avoid 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 Battery temperature is adjusted in the actual state of on-vehicle battery, and the temperature of on-vehicle battery is made to maintain preset range, avoids occurring The case where influence on-vehicle battery performance excessively high due to temperature.
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 101, evaporator 12, battery thermal management module 1, heat exchanger 2 and semiconductor heat exchange module 3 With controller (in figure not specifically illustrated).
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 101.Battery thermal management module 1 is connected with battery 4.Heat exchanger 2 and battery thermal It manages module 1 to be connected, heat exchanger 2 is correspondingly arranged by the first regulating valve 51 and the first blower 501 with air-conditioner wind air outlet.Partly lead Body heat exchange module 3 is used to freeze for evaporator 12.Battery thermal management module 1 connect formation heat exchange flow path with heat exchanger 2.Partly lead Body heat exchange module 3 includes colling end and fire end, and colling end is connect with evaporator 12, for freezing for evaporator 12.Controller Actual power P2 is adjusted for obtaining the temperature regulatory demand power P 1 for stating battery and temperature, and according to temperature regulatory demand power P1 and temperature adjust actual power P2 and the refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 101 are 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 The even entrance of colling end, 12 entrance of evaporator connects the outlet of colling end, as shown in Figure 8 a-8b, conductor heat exchange module 3 it is cold But holding 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 may be used also To include 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 101 and semiconductor heat exchange module 3 provide, wherein compression mechanism cold loop are as follows: the 13-the first electricity of 101-condenser of compressor 12-compressor of sub- valve 15-evaporator of the 14-the first expansion valve 101, after refrigerant flows through evaporator 12, at a temperature of evaporator 12 Drop, refrigerant temperature rise.Semiconductor heat exchange module refrigerating circuit are as follows: semiconductor heat exchange module 3 (colling end)-evaporator 12- Semiconductor heat exchange module (colling end), after refrigerant flows through evaporator 12, temperature is increased, semiconductor heat exchange module it is cold But it holds after the cooling of part refrigerant, flows anew through evaporator 12, 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.
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 is connected between the first expansion valve 15 and evaporator 12, the colling end of semiconductor heat exchange module 3 is directly connected to coolant loop In, after refrigerant first passes through colling end cooling, temperature decline, using evaporator 12, so that the cooling function of compression mechanism cold loop Rate is higher.As shown in Figure 8 b, semiconductor heat exchange module 3 can also be between concatenated evaporator 12 and compressor 101, and colling end is straight It being linked into coolant loop, refrigerant first passes through evaporator 12, so that refrigerant temperature increases, colling end then is being flowed through, so that Refrigerant temperature 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 tune to battery When section, the actual power that battery 4 obtains, target temperature and object time are setting value, can be according to the practical feelings of on-vehicle battery Condition is preset, for example, target temperature can be set at 35 DEG C or so, and the object time can set when cooling down to battery It is 1 hour.Controller can be adjusted according to power of the P1 and P2 to semiconductor heat exchange module 3 and/or compressor 101, with So that battery 4 is completed temperature adjusting within the object time, so that the temperature of on-vehicle battery is maintained preset range, avoid occurring The case where influence on-vehicle battery performance excessively high due to temperature.
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 that the second air duct 200 includes and the second blower being connected with the second regulating valve 52 502, the 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 After evaporator 12, temperature reduces air, and cooling wind blows to air-conditioner air outlet by third blower 503, then by the first blower 501 blow to heat exchanger 2, to cool down to the medium changed in hot flowpath, to cool down to battery 4, while heat exchange blower fan 301 blow to the heat of fire end outside vehicle.When needing to freeze in compartment, the second regulating valve 52 is opened, and the second blower 502 will The cooling wind of air-conditioner 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, pump 12, first 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 for the medium for flowing into on-vehicle battery Temperature；Second temperature sensor 15 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 16 is for examining Survey the flow velocity of the 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.
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 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 Two temperature thresholds.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, first Temperature threshold 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, humidity control system enters refrigerating mode, on-board air conditioner Controller control the first regulating valve 51 of control is opened, the medium flow direction to exchange heat in flow path are as follows: 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；
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 velocity and passes Sensor 16-media Containers, 13-heat exchanger 2-heater 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 section of flow path Product.
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 in preset time Interior average current I, and according to the second temperature regulatory demand power of formula (2) calculating battery 4.Then, battery manager root According to battery 4 the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 (i.e. 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 control Device processed obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains flow sensor The flow rate information of 16 detections adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.Finally, controller can be with Pass through control semiconductor heat exchange module 3 or the power of heater 11 or on-board air conditioner (compressor) according to P1, P2 of battery 4 It is adjusted 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 Difference power between actual power P2, and according to difference power increase semiconductor heat exchange module 3 and/or the refrigeration function of compressor 101 Rate, and when temperature regulatory demand power P 1 is less than or equal to temperature and adjusts actual power P2, reduce semiconductor heat exchange module 3 and/or compressor 101 refrigeration work consumption, or keep the refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 101 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 For scheme shown in Fig. 7, if on-board air conditioner controller receives the battery refrigerating function starting information of battery manager transmission, Then battery refrigerating function starts, on-board air conditioner controller send battery refrigerating function starting information to battery thermal management controller and Semiconductor control.On-board air conditioner controller receives the temperature regulatory demand power P 1 for the battery that battery manager is sent, and handle The information is transmitted to battery thermal management controller and semiconductor changer controller while controlling the first regulating valve 51 and opens.It is cold in battery But during, on-board air conditioner controller receives the water temperature information that battery thermal management controller is sent and the temperature of battery adjusts reality Power P 2, and the information is transmitted to battery manager and semiconductor control.In battery cooling procedure, on-board air conditioner control The temperature regulatory demand power P 1 of device control cell processed and the temperature actual power P2 information of battery, if temperature regulatory demand Power P 1 is greater than temperature actual power P2, then judges whether the temperature of battery reaches 45 DEG C (higher temperatures), if the temperature of battery Degree 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 wind flow increases the cooling wind flow of the cooling branch of battery, to adjust the cooling and interior cooling refrigerating capacity point of battery Match, meanwhile, semiconductor control controls semiconductor heat exchange module 3 with the operation of full refrigeration work consumption, i.e., maximum refrigeration work consumption is run, The influence that caused interior cooling effect reduces is reduced to alleviate interior cooling coolant quantity, 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, such as Fruit reaches, then on-board air conditioner controller reduces the aperture of the second regulating valve 52, increases the aperture of the first regulating valve 51, if vehicle Temperature in compartment does not reach air-conditioning set temperature, then preferential to meet interior refrigeration capacity requirement, at this time temperature regulatory demand function Rate P1 and temperature adjust the difference portion cooling power between actual power P2, are provided by semiconductor heat exchange module 3.In battery In refrigerating function opening process, on-board air conditioner controller monitors the practical cooling power of battery pack and semiconductor heat exchange module in real time Real-time cooling power information determine the first tune and according to interior cooling power demand and battery pack cooling power demand information The aperture between valve 51 and the second regulating valve 52 is saved, so that regulating cell is cooling and the cooling air quantity distribution of the cooling branch of car, So that the refrigeration work consumption in the battery cooling wind circuit that on-board air conditioner provides is equal to plus the cooling power of semiconductor heat exchange module 3 The temperature regulatory demand power P 1 of battery.In battery cooling procedure, if on-board air conditioner receives battery manager transmission Battery is cooling to complete information, i.e. the temperature of battery reaches 35 DEG C, then on-board air conditioner controller forwarding battery it is cooling complete information to Battery thermal 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 When P2, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling function in compartment Rate is sufficient, and reaches 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 not Become.
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 in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, 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 electric The P1 in pond 4 is greater than P2, illustrates if can not complete the heating of battery 4, battery within the object time according to current heating power Thermal 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, In, the difference power of P1 and P2 are bigger, and the power increase of heater 11 is more, so that the temperature of battery 4 rises in preset time t Up to target 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 protect The power for holding heater 11 is constant.When the temperature of battery reaches the second set temperature, such as at 10 DEG C, then battery 4 has heated At the control stopping of heater 11 is heated.After if humidity control system enters the heating mode long period, such as 2 hours Afterwards, the temperature of battery 4 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 electricity The P1 in pond 4 is greater than P2, and the revolving speed that can also control pump 12 improves, and cooling flowing path cross-sectional area is flowed through in the unit time to increase Mass of medium, thus improve battery 4 temperature adjust actual power P2, in object time t realize temperature adjust.
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 simultaneously The aperture of regulating valve, 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, and car is cooling Branch power=P6.Or semiconductor heat exchange module is run according to the cooling power P 3 of maximum, compressor is according to cooling power Pf Operation.The aperture of the second regulating valve is controlled simultaneously, so that interior cooling power is P6, controls the aperture of the first regulating valve, 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.Such as Fruit determines that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably the cooling function of interior offer Rate, compressor are run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is run according to the cooling power P 3 of maximum, are mentioned simultaneously High heat exchange blower fan revolving speed.Increase the aperture of the second regulating valve, improve the revolving speed of the second blower, so that interior cooling branch is cold But power 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 has reached set temperature, then preferentially meets the cooling power of battery.It can also improve in battery cooling circuit simultaneously Revolution speed, 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 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, and semiconductor takes a breath module according to the cooling operation of power P 3 of maximum.Or compressor is pressed It is run according to the cooling power P 7 of maximum, 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, semiconductor changes The cooling power of thermal modules increases Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is not Become.Or compressor cooling power increases 0.5*Pc, semiconductor heat exchange module cooling power increases 0.5Pc.Or according to The ratio of the maximum cooling power of compressor and semiconductor heat exchange module respectively proportionally increases cooling power.Increase simultaneously The aperture of first regulating valve improves the revolving speed of the first blower, heat exchange blower fan and pump, so that the cooling power of the cooling branch of battery Increase 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 Module 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 Being preferably that battery is cooling provides cooling power, and compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to most Big cooling power P3 operation, while improving rotation speed of fan.Increase the aperture of the first regulating valve, improves the revolving speed of the first blower, make The cooling power for obtaining the cooling branch of battery is P1+Pc, reduces the aperture of the second regulating valve, improves the revolving speed of the second blower, so that Cooling branch power=the P7+P3-P1-Pc of car, while revolution speed raising is controlled, heat exchange blower fan revolving speed improves, so that battery is cold But the cooling power of branch increases Pc.If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature also not up to sets temperature Degree, then be preferably it is interior cooling power is provided, compressor is run according to maximum refrigeration work consumption P7, semiconductor heat exchange module according to The cooling power P 3 of maximum is run, while improving heat exchange blower fan revolving speed.Increase the aperture of the second regulating valve, improves the second blower Revolving speed reduces the aperture of the first regulating valve so that the cooling power of interior cooling branch is P6, so that the cooling branch of battery Cooling power=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 under the cooling power of the cooling duplexure of battery Pc drops.
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, simultaneously Battery thermal 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 Power P c, 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, 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 to semiconductor according to temperature regulatory demand power and temperature The power of heat exchange module 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 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 influence on-vehicle battery performance too high or too low for temperature the case where.
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 include with Lower 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 of battery according to the first parameter Power.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand of battery according to the second parameter Power.The temperature of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Spend regulatory demand power P 1.
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 battery The inlet temperature and outlet temperature of flow path generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2It is raw with flow velocity v Actual power P2 is adjusted at temperature.
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 section of flow path Product.
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 changing of being connected with fire end Air-heater, 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 is flowed anew through after the cooling of part refrigerant Evaporator, 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 the wind that exchanges heat Machine blows to the heat of fire end outside vehicle.When battery refrigerating function does not start, the first regulating valve is closed.When the cooling function of battery The first regulating valve is opened when can start.First expansion valve can be used for controlling the flow for flowing into the refrigerant of evaporator, the first electronic valve It can be used for controlling the opening and closing of 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 electricity when currently carrying out temperature adjusting to battery that battery temperature, which adjusts actual power P2, The actual power that pond obtains, target temperature and object time are setting value, can be carried out according to the actual conditions of on-vehicle battery pre- If 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. It is then possible to be adjusted according to power of the P1 and P2 to semiconductor heat exchange module and/or compressor, so that battery can be Temperature is completed in object time to adjust, and so that the temperature of on-vehicle battery is maintained preset range, is avoided occurring due to the excessively high shadow of temperature The case where ringing on-vehicle 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 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 is used Freeze in 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 After evaporator, temperature is reduced, and cooling wind blows to air-conditioner air outlet by third blower, then blows to heat exchange by the first blower Device, to cool down to the medium in cooling pipe, to cool down to battery 4, while heat exchange blower fan is by the heat of fire end Amount blows to outside vehicle.When needing to freeze in compartment, the second regulating valve is opened, and the second blower is by the cooling wind of air-conditioner air outlet 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 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, Two temperature sensors 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 vehicle Carry the outlet temperature of the medium of battery；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.
In one embodiment of the invention, the semiconductor heat exchange module and heat exchanger are connected in the battery heat in parallel Management module is connect on the heat exchange flow path to be formed with the heat exchanger, wherein evaporator outlet connects entering for the colling end Mouthful, the evaporator inlet connects the outlet of the colling end.Alternatively, the colling end of semiconductor heat exchange module and evaporator string Connection connection, specifically, the entrance of the colling end of semiconductor heat exchange module is connected with the outlet of the first expansion valve, the semiconductor The outlet of the colling end of heat exchange module is connected with the entrance of the evaporator, alternatively, the colling end of the semiconductor heat exchange module Entrance be connected with the outlet of evaporator, the outlet of the colling end of the semiconductor heat exchange module and the battery thermal management mould The entrance of block is connected.
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 with higher, reliability And practicability.Pump is mainly used for providing power, and media Containers are mainly used for storage medium and receive to add to humidity control system Medium, when the medium in cooling pipe is reduced, the medium in media Containers can be automatically replenished.First temperature sensor is used To detect the temperature of cell flow entrance medium, temperature of the second temperature sensor to detect cell flow outlet medium.Stream Flow rate information of the fast sensor 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 cooling mould Formula；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 Heat exchanger is blowed to, is cooled down with the medium in cooling pipe in heat exchanging device, medium is again through battery thermal management module to battery It is cooled down.
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 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 compressor；It is adjusted in fact if temperature regulatory demand power P 1 is less than or equal to temperature Border 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 specifically includes according to the power that difference power increases semiconductor heat exchange module: being adjusted in fact when temperature regulatory demand power P 1 is greater than temperature Border power P 2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module and transported with full refrigeration work consumption Row.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, Increase 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, reduce interior cooling wind flow, increase the cooling wind flow of the cooling branch of battery, it is cooling and interior to adjust battery Cooling refrigerating capacity distribution, while controlling semiconductor heat exchange module and being run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, The influence that caused interior cooling effect reduces is reduced to alleviate interior cooling coolant quantity, and controls heat exchange blower fan and is turned with height Speed work.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, reduce the aperture of the second regulating valve, increases the aperture of the first regulating 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 actual power at this time Difference portion cooling power between P2, is provided by semiconductor heat exchange module.In battery refrigerating function opening process, in real time The real-time cooling power information of battery pack practical cooling power and semiconductor heat exchange module is monitored, and according to interior cooling power Demand and battery pack cooling power demand information, determine the aperture between the first regulating valve and the second regulating valve, to adjust electricity The cooling air quantity distribution of the cooling and interior cooling circuit in pond, so that the refrigeration function in the battery cooling wind circuit that on-board air conditioner provides Rate is equal to the temperature regulatory demand power P 1 of battery plus the cooling power of semiconductor heat exchange module.In battery cooling procedure, If the temperature of battery reaches 35 DEG C, 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 less than When P2, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling function in compartment Rate is sufficient, and reaches 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 tune Save actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, temperature regulatory demand is obtained Power P 1 and temperature adjust the difference power between actual power P2, and are increased according to difference power for semiconductor heat exchange module Heating power；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2, semiconductor is kept to exchange heat The heating power of module 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, It can reduce the heating power of heater then to save electric energy, or keep heater power constant.When the temperature of battery reaches Two set temperatures, such as at 10 DEG C, then battery heating is completed, control heater stopping is heated.If humidity control system Into after 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, 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 processed increases, the aperture of the first regulating valve increases, semiconductor heat exchange module or heater Outside power, 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, Actual power P2 is adjusted to improve the temperature of battery, 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.As a result, this method can it is excessively high in on-vehicle battery temperature or When too low, battery temperature is adjusted according to the actual state of on-vehicle battery, the temperature of on-vehicle battery is made to maintain default model It encloses, avoids 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 include: heat exchanger 2, compressor 101, condenser 13, Battery thermal management module 1, semiconductor heat exchange module 3, controller (not specifically illustrated in figure).
Wherein, compressor 101 is connect with heat exchanger 2.Condenser 13 is connected with compressor 101.Battery thermal management module 1 Formation heat exchange flow path is connect with heat exchanger 2.Semiconductor heat exchange module 3 includes colling end, fire end and heat exchange blower fan 301, cooling The one of them of end or fire end is connect with heat exchanger, for being the heat exchanger heating power/refrigeration work consumption, heat exchange blower fan 301 are connected with the another one of colling end or fire end, and heat exchange blower fan 301 is to the air draft to outside compartment.Control controller respectively and half Conductor heat exchange module 3, compressor 101 and battery thermal road module 1 connect, for obtaining the temperature regulatory demand power of battery 4 P1 and temperature adjust actual power P2, and adjust actual power P2 to semiconductor according to temperature regulatory demand power P 1 and temperature The power of heat exchange module and/or 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, and colling end/fire end entrance of semiconductor heat exchange module 3 is connected with the first end of heat exchanger 2, and semiconductor changes Colling end/fire end outlet of thermal modules 3 is connected with the second end of heat exchanger 2.As shown in Figure 12 a-12b, semiconductor heat exchange Module 3 can also be connected between heat exchanger 2 and battery thermal management module 1, colling end/fire end of semiconductor heat exchange module 3 It is connected in series with heat exchanger 2, wherein colling end/fire end entrance of semiconductor heat exchange module 3 and the second end of heat exchanger 2 It is connected, colling end/fire end outlet of semiconductor heat exchange module 3 is connected with the entrance of battery thermal management module 1.
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, Colling end 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 It is in parallel with heat exchanger 2 and battery 4, as shown in Figure 12b, fire end can also be connected on heat exchanger 2 and battery thermal management module 1 it Between.
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 compartment outlet Wind.Heat exchanger 2 can be plate heat exchanger, and as shown in Figure 11 a-11b and 12a-12b, heat exchanger 2 has there are two road, wherein the One pipeline is connected with compressor 101, and second pipe is connected with battery thermal management module 1, and what is flowed in first pipe is refrigerant, the What is flowed in two pipelines 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 Thermal management module 1 and on-board air conditioner are started to work, and the positive power supply (Figure 11 a) of semiconductor heat exchange module 3, wherein battery cools back The cooling power on road mainly has 2 sources, one of them is the compressor 101 of on-board air conditioner, and 101 refrigerant of compressor, which flows into, to be changed Hot device 2 provides cooling power for heat exchanger 2, and medium flow field is after heat exchanger 2 in cooling pipe, medium temperature decline；It is another A is semiconductor heat exchange module 3, and the positive power supply of semiconductor heat exchange module 3, colling end accesses cooling pipe, directly to medium into Row cooling provides cooling power for battery cooling, 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, such as Figure 11 b institute Show, fire end accesses cooling pipe, and fire end is begun to warm up, to heat to the medium in cooling pipe, to battery 4 It is heated, 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 adjust actual power P2 i.e. currently to battery into When trip 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 preset, for example, target temperature can be set at 35 DEG C or so, when to battery when cooling down to battery When being heated, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Controller can according to P1 and The power of semiconductor heat exchange module 3 and/or compressor 101 is adjusted in P2, 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 since influence too high or too low for temperature is vehicle-mounted The case where battery performance.
Compressor 101 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 101, and the cooling branch 20 of car includes evaporator 21, evaporator 21 It is connected with compressor 101.
Specifically, compressor 101 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 Main to provide refrigeration work consumption by evaporator 12 for the space in compartment, it is battery that the cooling branch of battery, which mainly passes through heat exchanger 2, 4 provide refrigeration work consumption.Wherein the cooling power of the cooling branch of battery mainly has 2 sources, one of them is compressor 101 Refrigerant flows 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 provides cooling power for the cooling branch of battery.
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 cold But 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 101-12-compressors of condenser the 13-the second electronic valve 25-evaporator of the 24-the second expansion valve 101；Battery cools down branch 30 are as follows: 101-condenser of compressor the 13-the first electronic valve 15-heat exchanger of the 14-the first expansion valve, 2-compressor 101.When When battery refrigerating 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 It opens.If car does not need to freeze at this time, the second electronic valve 24 is closed.
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 For detecting the flow velocity of the 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 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 It spends regulating system and heating power is provided, controlled by battery thermal management controller, heater 11 is not direct to be contacted with battery 4, is had Higher safety, dependable with function.Pump 12 is mainly used for providing power, and media Containers 13 are mainly used for storage medium The medium added with receiving to humidity control system, Jie when the medium in humidity control system is reduced, in media Containers 13 Matter can be 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 sensor 16 is to detect pipeline internal medium in humidity control system Flow rate 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 section of flow path Product.
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 opened with defaulting 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 in preset time Interior average current I, and according to the second temperature regulatory demand power of formula (2) calculating battery 4.Then, battery manager root According to battery 4 the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 (i.e. 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 control Device processed obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains flow sensor The flow rate information of 16 detections adjusts actual power P2 according to the temperature that formula (3) calculates battery 4.Finally, controller according to P1, P2 of battery 4 pass through control semiconductor heat exchange module 3 or the power and expansion valve of heater 11 or compressor 101 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 open.When cooling down to battery, the first electronic valve is opened, cold coal flow direction are as follows: 101-condenser of compressor 13-the One 2-compressor of electronic valve 15-heat exchanger of the 14-the first expansion valve 101；Medium flow field is respectively as follows: and changes to being 2 in Figure 11 a Hot 2-heater of device 11 (closing)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-stream 13-heat exchanger of fast 16-media Containers of sensor 2；Colling end-2-heater of heat exchanger 11 (closing)-pump 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16-media Containers, 13-colling end.Figure Medium flow field is to being one in 12a, it may be assumed that heat exchanger 2 --- colling end-heater 11 (closing)-pumps the 12-the first temperature sensing 14-battery of device, 4-second temperature sensor-15-16-media Containers of flow sensor, 13-heat exchanger 2.Pass through heat exchange Medium in 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 11 b intermediary Mass flow is respectively as follows: 2-heater of heat exchanger 11 (unlatching)-pump, 12-the first 14-battery of temperature sensor 4-to being 2 13-heat exchanger of second temperature sensor-15-flow sensor, 16-media Containers 2；Fire end-heat exchanger 2-heating Device 11 (Guan Kaiqi)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16-13-fire ends of media Containers.Medium flow field is to being one in Figure 12 b, it may be assumed that heat exchanger 2 --- fire end-heater 11 (unlatching)-pumps the 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-flow sensor 16-and is situated between 13-heat exchanger of matter container 2.By the medium in heater 11 and fire end heating-cooling coil road so that medium and battery 4 into Row heat exchange, the temperature for completing battery are 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 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 101 according to difference power, and small in temperature regulatory demand power P 1 When temperature adjusts actual power P2, reduce the power of semiconductor heat exchange module 3 and/compressor 101, or keep partly The power of conductor heat exchange module 3 and/compressor 101 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 function of semiconductor heat exchange module 3 when being not up to air-conditioning set temperature Rate.
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 Semiconductor control.On-board air conditioner controller receives the temperature regulatory demand power P 1 for the battery that battery manager is sent, and handle The information is transmitted to battery thermal management controller and semiconductor control.In battery cooling procedure, on-board air conditioner controller control Make the unlatching of the first electronic valve 14.On-board air conditioner controller receives the water temperature information and battery that battery thermal management controller is sent Temperature adjusts actual power P2, and the information is transmitted to battery manager and semiconductor control.In battery cooling procedure In, the temperature regulatory demand power P 1 of on-board air conditioner controller control cell and the temperature actual power P2 information of battery, if Temperature regulatory demand power P 1 is greater than temperature actual power P2, then judges whether the temperature of battery reaches 45 DEG C (higher temperatures), If the temperature of battery reaches 45 DEG C, on-board air conditioner controller reduces the aperture of the second expansion valve 15, increases the first expansion valve 25 aperture increases the cold medium flux of the cooling branch of battery to reduce interior cold medium flux, cooling and interior to adjust battery Cooling refrigerating capacity distribution, meanwhile, 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 influence that interior cooling effect caused by interior cooling coolant quantity reduction reduces, and is controlled and is changed Air-heater is 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 and set Determine temperature, if reached, on-board air conditioner controller reduces the aperture of the second expansion valve 25, increases opening for the first expansion valve 15 Degree preferentially meets interior refrigeration capacity requirement, at this time temperature if the temperature in compartment does not reach air-conditioning set temperature Regulatory demand power P 1 and temperature adjust the difference portion cooling power between actual power P2, are mentioned by semiconductor heat exchange module 3 For.In battery refrigerating function opening process, on-board air conditioner controller monitors the practical cooling power of battery pack and semiconductor in real time The real-time cooling power information of heat exchange module, and according to interior cooling power demand and battery pack cooling power demand information, really Aperture between fixed first expansion valve 15 and the second expansion valve 25, so as to the refrigerant of the cooling and interior cooling circuit of regulating cell Distribution, so that the refrigeration work consumption for the cooling branch of battery that on-board air conditioner provides adds the refrigeration function that semiconductor heat exchange module 3 provides Rate is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if on-board air conditioner controller receives battery The battery that manager is sent is cooling to complete information, i.e. the temperature of battery reaches 35 DEG C, then on-board air conditioner controller forwarding battery is cold But it completes information and gives battery thermal 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 When P2, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling function in compartment Rate is sufficient, and reaches 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 101, reduces or partly leads Body heat exchange module 3 reduces refrigeration work consumption, to save electric energy, or keeps the refrigeration of compressor 101 and semiconductor heat exchange module 3 Power 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 function between the temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained Rate is poor, and increases the power for heating the heater 11 of battery according to difference power, and small 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 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 be with Reduce the heating power of heater 11 and/or semiconductor heat exchange module 3 to save electric energy, or keeps heater 11 and/or partly lead The power of body heat exchange module 3 is constant.When the temperature of battery reaches the second set temperature, such as at 10 DEG C, then battery 4 has heated At 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 is below 10 DEG C, then battery thermal management controller suitably increases the power of heater 11, so that battery 4 is complete as early as possible At 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 controller then controls pump 12 is reduced, and to save electric energy, or keeps the revolving speed of pump 12 constant.And if electricity The P1 in pond 4 is greater than P2, except control compressor of air conditioner cooling power increases, the aperture of the first expansion valve 15 increases, semiconductor heat exchange Outside the power of module 3 or heater 11 increases, the revolving speed that can also control pump 12 is improved, and is flowed through with increasing in the unit time The mass of medium of cooling flowing path cross-sectional area, so that the temperature for improving battery 4 adjusts actual power P2, in object time t Realize that temperature 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 Evaporator is flowed through for the refrigerant by the second expansion valve, air blows to the cooling function of the air-conditioning cooling wind in compartment by evaporator Rate.
(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 simultaneously The aperture of expansion 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, and car is cooling Branch power=P6.Or semiconductor heat exchange module is run according to the cooling power P 3 of maximum, compressor is according to cooling power Pf Operation.The aperture of the second expansion valve is controlled simultaneously, so that interior cooling power is P6, controls the aperture of the first expansion valve, 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 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 little In 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, and compressor is made according to maximum Cold power P 7 is run, and semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange blower fan revolving speed.Increase The aperture of second expansion valve reduces the aperture of the second expansion valve, so that electric so that the cooling power of interior cooling branch is P6 Cooling power=P7+P3-P6 of the cooling branch in pond.If vehicle interior temperature has reached set temperature, preferentially meet battery Cooling power.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 Compressor 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 is pressed It is run according to the cooling power P 7 of maximum, 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, semiconductor changes The cooling power of thermal modules increases Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is not Become.Or compressor cooling power increases 0.5*Pc, semiconductor heat exchange module cooling power increases 0.5Pc.Or according to The ratio of the maximum cooling power of compressor and semiconductor heat exchange module respectively proportionally increases cooling power.Increase simultaneously The aperture of first expansion valve improves the revolving speed of heat exchange blower fan and pump, 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 Module 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 Being preferably that battery is cooling provides cooling power, and compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to most Big cooling power P3 operation, while improving rotation speed of fan.Increase the aperture of the first expansion valve, so that the cooling branch of battery is cold But power is P1+Pc, reduces the aperture of the second expansion valve, so that interior cooling branch power=P7+P3-P1-Pc, same to time control Revolution speed processed improves, and 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, and compressor is pressed It is run according to maximum refrigeration work consumption P7, semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while being improved heat exchange blower fan and being turned Speed.Increase the aperture of the second expansion valve, so that the cooling power of interior cooling branch is P6, reduce the aperture of the first expansion valve, So that cooling power=P7+P3-P6 of the cooling branch of battery.It is preferential to meet if vehicle interior temperature has reached set temperature 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 pump and turns 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 Power P c, 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 according to Maximum heating power P 5 provides heating power for battery, and semiconductor heat exchange module increases heating power Pc.It or is heater Heating power is constant, and the heating power of semiconductor heat exchange module increases Pc.Or heater heating power increases Pc, partly leads The heating power of body heat exchange module is constant.Or ptc heater heating power increases 0.5*Pc, semiconductor heat exchange module adds Thermal power increases 0.5Pc, or respectively according to the ratio of ptc heater and the maximum heating power of semiconductor heat exchange module Proportionally increase heating power.Heat exchange blower fan revolving speed is improved simultaneously, and battery thermal management heat exchange module improves revolution speed, to mention High heat exchange power, so that battery heating power increases Pc.
If P1 > P2, Pc=P1-P2, and P1+Pc > P5+P4, then ptc heater is according to maximum heating power P 5 Battery provides heating power, while semiconductor heat exchange module provides heating power according to maximum heating power P 4 for battery, simultaneously Heat exchange blower fan revolving speed is improved, 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 to semiconductor according to temperature regulatory demand power and temperature The power of heat exchange module 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 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 influence on-vehicle battery performance too high or too low for temperature the case where.
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 pressure The connected condenser of contracting machine；Battery thermal management module, battery thermal management module connect to form heat exchange flow path with heat exchanger；Partly lead Body heat exchange module, semiconductor heat exchange module include colling end, fire end and heat exchange blower fan, and wherein the one of colling end or fire end Person connect with heat exchanger, for being heat exchanger heating power/refrigeration work consumption, heat exchange blower fan and colling end or fire end it is another Person is connected, and institute's air-heater is to the air draft to outside compartment；As shown in figure 13, the temperature control method of on-vehicle battery includes following step It is rapid:
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 of battery according to the first parameter Power.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand of battery according to the second parameter Power.The temperature of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Spend regulatory demand power P 1.
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 battery The inlet temperature and outlet temperature of flow path generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2It is raw with flow velocity v Actual power P2 is adjusted at temperature.
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 section of flow path Product.
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 exchange Device can be plate heat exchanger, as shown in Figure 11 a-11b and 12a-12b, heat exchanger tool there are two road, wherein first pipe with Compressor is connected, and second pipe is connected with battery thermal management module, and what is flowed in first pipe is refrigerant, flows in second pipe It is medium.
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 The compressor of on-board air conditioner, compressor refrigerant flow into heat exchanger, provide cooling power, medium in cooling pipe for heat exchanger After flowing through heat exchanger, medium temperature decline；The other is semiconductor heat exchange module, the power supply of semiconductor heat exchange module forward direction is cooling It terminates into cooling pipe, directly medium is cooled down, provide cooling power for battery is cooling, while heat exchange blower fan will heat The heat at end 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 Heating mode, semiconductor heat exchange module and battery thermal management module are started to work, semiconductor heat exchange module reverse power supply, are such as schemed Shown in 11b, fire end accesses cooling pipe, and fire end is begun to warm up, to heat to the medium in cooling pipe, with right Battery is heated, 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, complete to add refrigeration work consumption/heating power to provide At 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 practical feelings of on-vehicle battery Condition is preset, for example, target temperature can be set at 35 DEG C or so, heat when to battery when cooling down to battery When, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Then, semiconductor is changed according to P1 and P2 The power of thermal modules 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.
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 practical feelings Condition 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 heat exchanger Cooling power is provided, the other is the colling end of semiconductor heat exchange module, which carries out refrigeration, provides cooling for the cooling branch of battery Power.
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 that battery is arranged in First temperature sensor of one 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, Temperature of the second temperature sensor to detect cell flow outlet medium.Flow sensor is to detect in humidity control system The flow rate information of pipeline internal medium.
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 cooling mould Formula；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, need to battery into Row cooling processing, into refrigerating mode.Control the first electronic valve of control is opened, the power supply of semiconductor heat exchange module forward direction, colling end Access cooling pipe.When cooling down to battery, the first electronic valve is opened, by heat exchanger and colling end cooling pipe Medium 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, by adding Medium in hot device and fire end heating-cooling coil road completes the temperature tune of battery so that medium and battery 4 carry out heat exchange Section.
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 Whether P1, which is greater than temperature, adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, The difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, and is partly led according to difference power increase The power of body heat exchange module and/or compressor；If temperature regulatory demand power P 1, which is less than or equal to temperature, adjusts actual power P2 then reduces the power of semiconductor heat exchange module and/or compressor, or keeps the function of semiconductor heat exchange module and/or compressor Rate is constant.
Further, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and root are obtained It specifically includes according to the power that difference power increases semiconductor heat exchange module: being adjusted in fact when temperature regulatory demand power P 1 is greater than temperature Border power P 2, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module and transported with full refrigeration work consumption Row.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, Increase 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 increase the cold medium flux of the cooling branch of battery to reduce interior cold medium flux, to adjust, battery is cooling and car is cold But refrigerating capacity distribution, meanwhile, control semiconductor heat exchange module is run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, with Alleviate interior cooling coolant quantity and reduce the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high revolving speed work Make.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, The aperture of the second expansion valve is then reduced, the aperture of the first expansion valve is increased, if the temperature in compartment does not reach air-conditioning setting Temperature, then it is preferential to meet interior refrigeration capacity requirement, at this time temperature regulatory demand power P 1 and temperature adjust actual power P2 it Between difference portion cooling power, provided by semiconductor heat exchange module.In battery refrigerating function opening process, real time monitoring The real-time cooling power information of the practical cooling power of battery pack and semiconductor heat exchange module, and according to interior cooling power demand With battery pack cooling power demand information, the aperture between the first expansion valve and the second expansion valve is determined, so that regulating cell is cold But it is distributed with the refrigerant of interior cooling circuit, so that the refrigeration work consumption for the cooling branch of battery that on-board air conditioner provides adds semiconductor The refrigeration work consumption that heat exchange module provides is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if battery Temperature reach 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 has been filled Foot, 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.
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 compressor of air conditioner according to difference power Cooling 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 compressor of air conditioner cooling power it is 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: judging that temperature regulatory demand power P 1 is The no temperature that is greater than adjusts actual power P2；If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, obtain Temperature regulatory demand power P 1 and temperature adjust the difference power between actual power P2, and are 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.
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, can reduce heater and/or semiconductor heat exchange module plus Thermal 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 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 of air conditioner processed 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, Actual power P2 is adjusted to improve the temperature of battery, 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 according to temperature regulatory demand power and temperature and exchange heat to semiconductor The power of module and/or compressor is adjusted, and temperature to be adjusted when on-vehicle battery is too high or too low for temperature, makes 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 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: compressor 101, condenser 13, the cooling branch 20 of car and battery being connected with compressor 101 Cooling branch 30, semiconductor heat exchange module 3, controller (not specifically illustrated in figure).
Wherein, condenser 13 is connected with compressor 101.The cooling branch 30 of battery includes heat exchanger 2, the cooling branch of car 20 include evaporator 21, and compressor 101 is connected with institute heat exchanger 2 and evaporator 21.Semiconductor heat exchange module 3 includes cold But end, fire end state the colling end of semiconductor heat exchange module 3 and are connected with heat exchanger 2, and semiconductor heat exchange module 3 is to exchange heat Device 2 provides cooling power.Battery thermal management module 1 connect formation heat exchange flow path with heat exchanger 2.Controller respectively at partly lead Body heat exchange module 3, battery thermal management module 1 and compressor 101 connect, and controller is used to obtain the temperature regulatory demand of battery Power P 1 and temperature adjust actual power P2, and adjust actual power P2 to half according to temperature regulatory demand power P 1 and temperature The refrigeration work consumption of conductor heat exchange module 3 and/or compressor 101 is adjusted.
Further, in an embodiment of the present invention, as shown in figure 14, the colling end of semiconductor heat exchange module 3 can be with Heat exchanger is in parallel；As shown in Figure 15 a-15b, the colling end of semiconductor heat exchange module 3 can also connect with heat exchanger 2.Partly lead Body heat exchange module 3 further includes the connected heat exchange blower fan 301 of fire end, and heat exchange blower fan 301 is to the air draft to outside compartment.
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 changed as shown in Figure 14 and 15a-15b for plate heat exchanger There are two roads for the hot tool of device 2, and wherein first pipe is connected with compressor 101, and second pipe is connected with battery thermal management module 1, the What is flowed in one pipeline is refrigerant, and what is flowed in second pipe is medium.
Compressor 101 and condenser 12 constitute air conditioner refrigerating branch 10, evaporator 12, the second expansion valve 25, the second electronics Valve 24 constitutes 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 2 He of heat exchanger Between compressor 101.
(compressor 101) 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 mainly provided by evaporator 12 for the space in compartment Refrigeration work consumption, it is that battery 4 provides refrigeration work consumption that the cooling branch of battery, which mainly passes through heat exchanger 2,.Wherein the cooling branch of battery is cold But power mainly has 2 sources, one of them is that the refrigerant of compressor 101 flows into heat exchanger 2, provides cooling for heat exchanger 2 Power, 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 and second electronic valve 24 be respectively used to opening and closing for the cooling branch 30 of control battery and interior cooling branch 20.First Expansion valve 15 and the second expansion valve 25 can be respectively used to the cooling branch 30 of control battery and interior cooling branch 20 and refrigerant stream Amount, 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 101-12-compressors of condenser the 13-the second electronic valve 25-evaporator of the 24-the second expansion valve 101；In Figure 14, battery is cold But branch 30 are as follows: 101-condenser of compressor the 13-the first electronic valve the 14-the first expansion valve 15-heat exchanger, 2-compressor 101.Refrigerant is after heat exchanger 2, temperature decline, and after battery medium flows through heat exchanger 2, temperature decline provides for battery cooling Cooling power.Meanwhile colling end may be that battery provides cooling power, the flow direction of refrigerant in the cooling branch of semiconductor are as follows: cold But end-2-colling end of heat exchanger.After refrigerant flows through heat exchanger 2,2 temperature of heat exchanger decline, refrigerant temperature is increased, Semiconductor heat exchange module 3 flows anew through heat exchanger 2, so that 2 temperature of heat exchanger for after the higher refrigerant cooling of portion temperature Decline, when battery medium flows through heat exchanger 2, medium temperature decline.It is possible thereby to which to improve battery cold for semiconductor heat exchange module But the refrigeration work consumption in circuit.
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, temperature Decline, 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 function of air-conditioning system Rate alleviates 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 adjust actual power P2 i.e. currently to battery into When trip 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 preset, for example, target temperature can be set at 35 DEG C or so, when to battery when cooling down to battery When being heated, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Controller can according to P1 and The refrigeration work consumption of semiconductor heat exchange module 3 and/or compressor 101 is adjusted in P2, 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 the excessively high influence vehicle mounted electric of temperature The case where pond performance.
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 dynamic for providing Power so that heat exchange flow path in media flow；First temperature sensor 14 is used to detect the entrance for the medium for flowing into on-vehicle battery Temperature；Second temperature sensor 15 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 16 is for examining Survey the flow velocity of the 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 heat for PTC Device provides heating power to carry out CAN communication with battery thermal management controller for the humidity control system of on-vehicle battery, by The control of battery thermal management controller, heater 11 is not direct to be contacted with battery 4, safety with higher, reliability and practical Property.Pump 12 is mainly used for providing power, and media Containers 13 are mainly used for storage medium and receive to humidity control system addition Medium, when the medium in humidity control system is reduced, the medium in media Containers 13 can be automatically replenished.First temperature sensing Temperature of the device 14 to detect cell flow entrance medium, second temperature sensor 15 is to detect cell flow outlet medium Temperature.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 section of flow path Product.
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 in preset time Interior average current I, and according to the second temperature regulatory demand power of formula (2) calculating battery 4.Then, battery manager root According to battery 4 the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 (i.e. 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 control Device processed obtains the first temperature sensor 14 respectively and second temperature sensor 15 detects temperature information, and obtains flow sensor The flow rate information of 16 detections 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 electricity of control Sub- valve 14 is opened.The flow direction of medium in Figure 14 and Figure 15 a-15b are as follows: 2-heater of heat exchanger 11 (closing)-pump 12-the first 14-battery of temperature sensor, 4-second temperature sensor-15-16-media Containers of flow sensor, 13-heat exchanger 2. The temperature of battery is completed so that medium and battery 4 carry out heat exchange by the medium in heat exchanger 2 and colling end cooling pipe It adjusts.
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 function When rate P1 is less than or equal to temperature adjusting actual power P2, reduce the refrigeration function of semiconductor heat exchange module 3 and/or on-board air conditioner Rate, 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, with The refrigeration work consumption of interior cooling branch 20 is reduced, 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 to battery thermal management controller and semiconductor Heat exchange module 3.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 heat exchange module 3.In battery cooling procedure, on-board air conditioner controller Control the unlatching of the first electronic valve 14.On-board air conditioner controller receives the water temperature information and battery that battery thermal management controller is sent Temperature adjust actual power P2, and the information is transmitted to battery manager and semiconductor control.In battery cooling procedure In, the temperature regulatory demand power P 1 of on-board air conditioner controller control cell and the temperature actual power P2 information of battery, if Temperature regulatory demand power P 1 is greater than temperature actual power P2, then judges whether the temperature of battery reaches 45 DEG C (higher temperatures), If the temperature of battery reaches 45 DEG C, on-board air conditioner reduces the aperture of the second expansion valve 15, increases opening for the first expansion valve 25 Degree, 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, semiconductor control controls semiconductor heat exchange module 3 with the operation of full refrigeration work consumption, i.e., maximum refrigeration function Rate operation to alleviate the influence that interior cooling effect caused by interior cooling coolant quantity reduction 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 setting temperature Degree, if reached, on-board air conditioner controller reduces the aperture of the second expansion valve 25, increases the aperture of the first expansion valve 15, such as Temperature in fruit compartment does not reach air-conditioning set temperature, then preferential to meet interior refrigeration capacity requirement, and temperature, which is adjusted, at this time needs It asks power P 1 and temperature to adjust the difference portion cooling power between actual power P2, is provided by semiconductor heat exchange module 3.? In battery refrigerating function opening process, on-board air conditioner controller monitors the practical cooling power of battery pack and semiconductor heat exchange in real time The real-time cooling power information of module, and according to interior cooling power demand and battery pack cooling power demand information, determine Aperture between one expansion valve 15 and the second expansion valve 25, so that the refrigerant of the cooling and interior cooling circuit of regulating cell distributes, So that the refrigeration work consumption that the refrigeration work consumption for the cooling branch of battery that on-board air conditioner provides is provided plus semiconductor heat exchange module 3 is equal to The temperature regulatory demand power P 1 of battery.In battery cooling procedure, if on-board air conditioner receives battery manager transmission Battery is cooling to complete information, i.e. the temperature of battery reaches 35 DEG C, then the cooling information of completing of on-board air conditioner 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 When P2, if battery temperature is no more than 45 DEG C, the refrigeration capacity requirement in still preferential compartment, if the cooling function in compartment Rate is sufficient, and reaches balance, then on-board air conditioner increases battery cooling power again.And if P1 is less than or equal to P2, vehicle Carrying air-conditioning can reduce the cooling power or the reduction refrigeration work consumption of semiconductor heat exchange module 3 of compressor, to save electric energy, or Person keeps the refrigeration work consumption of compressor and semiconductor heat exchange module 3 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 in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, 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 when default Between be increased to target temperature in t.And if P1 is less than or equal to P2, it can reduce the heating power of heater 11 to save electricity Can, 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 Heating is completed, and battery manager sends the information of closing temperature regulatory function by CAN communication to battery thermal management controller, It is heated with controlling the stopping of heater 11.After if humidity control system enters the heating mode long period, such as 2 hours Afterwards, the temperature of battery 4 still is below 10 DEG C, then battery thermal management controller suitably increases the power of heater 11, so that battery 4 complete heating as early as possible.
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 aperture of the first expansion valve 15 increases, Outside the power of semiconductor heat exchange module 3 or heater 11, the revolving speed that can also control pump 12 is improved, to increase the unit time The mass of medium of cooling flowing path cross-sectional area is inside flowed through, so that the temperature for improving battery 4 adjusts actual power P2, in target Realize that temperature is adjusted in time t.
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 simultaneously The aperture of expansion 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, and car is cooling Branch power=P6.Or semiconductor heat exchange module is run according to the cooling power P 3 of maximum, compressor is according to cooling power Pf Operation.The aperture of the second expansion valve is controlled simultaneously, so that interior cooling power is P6, controls the aperture of the first expansion valve, 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 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 little In 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, and compressor is made according to maximum Cold power P 7 is run, and semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while improving heat exchange blower fan revolving speed.Increase The aperture of second expansion valve reduces the aperture of the second expansion valve, so that electric so that the cooling power of interior cooling branch is P6 Cooling power=P7+P3-P6 of the cooling branch in pond.If vehicle interior temperature has reached set temperature, preferentially meet battery Cooling power.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 Compressor 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 is pressed It is run according to the cooling power P 7 of maximum, 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, semiconductor changes The cooling power of thermal modules increases Pc.Or compressor cooling power increases Pc, the cooling power of semiconductor heat exchange module is not Become.Or compressor cooling power increases 0.5*Pc, semiconductor heat exchange module cooling power increases 0.5Pc.Or according to The ratio of the maximum cooling power of compressor and semiconductor heat exchange module respectively proportionally increases cooling power.Increase simultaneously The aperture of first expansion valve improves the revolving speed of heat exchange blower fan and pump, 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 Module 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 Being preferably that battery is cooling provides cooling power, and compressor is run according to maximum refrigeration work consumption P7, and semiconductor heat exchange module is according to most Big cooling power P3 operation, while improving rotation speed of fan.Increase the aperture of the first expansion valve, so that the cooling branch of battery is cold But power is P1+Pc, reduces the aperture of the second expansion valve, so that interior cooling branch power=P7+P3-P1-Pc, same to time control Revolution speed processed improves, and 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, and compressor is pressed It is run according to maximum refrigeration work consumption P7, semiconductor heat exchange module is run according to the cooling power P 3 of maximum, while being improved heat exchange blower fan and being turned Speed.Increase the aperture of the second expansion valve, so that the cooling power of interior cooling branch is P6, reduce the aperture of the first expansion valve, So that cooling power=P7+P3-P6 of the cooling branch of battery.It is preferential to meet if vehicle interior temperature has reached set temperature 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, simultaneously Battery thermal 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, 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 obtains battery by battery thermal management module Temperature regulatory demand power and temperature adjust actual power, and adjust actual power according to temperature regulatory demand power and temperature The heats power of refrigeration work consumption or heater to semiconductor heat exchange module is adjusted.Thus, it is possible in on-vehicle battery temperature When too high or too low, battery temperature is adjusted according to the actual state of on-vehicle battery, 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.
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；It is connected with compressor The cooling branch of car and the cooling branch of battery, wherein the cooling branch of battery includes heat exchanger, and the cooling branch of car includes evaporation Device；Semiconductor heat exchange module, semiconductor heat exchange module include colling end, fire end, the colling end of semiconductor heat exchange module with change Hot device is connected, and semiconductor heat exchange module is to provide cooling power for heat exchanger；Battery thermal management module, battery thermal management mould Block connect to form heat exchange flow path with heat exchanger.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 of battery according to the first parameter Power.Second parameter of the battery when temperature is adjusted is obtained, and generates the second temperature regulatory demand of battery according to the second parameter Power.The temperature of battery is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of battery and battery Spend regulatory demand power P 1.
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 battery The inlet temperature and outlet temperature of flow path generates second temperature difference Δ T2.According to the second temperature difference Δ T of battery2It is raw with flow velocity v Actual power P2 is adjusted at temperature.
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 section of flow path Product.
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, heat exchange Blower 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 plate heat exchanger, as shown in Figure 14 and 15a-15b, There are two roads for heat exchanger tool, and wherein first pipe is connected with compressor, and second pipe is connected with battery thermal management module, and first What is flowed in pipeline 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 compression Between machine.
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, In one be that the refrigerant of compressor flows into heat exchanger, cooling power is provided for heat exchanger, the other is semiconductor heat exchange module Colling end carry out refrigeration be heat exchanger 2 for cooling power.It is cold that first electronic valve and the second electronic valve are respectively used to control battery But branch and car cool down opening and closing for branch.It is cold that first expansion valve and the second expansion valve can be respectively used to control battery But branch and interior cooling branch and cold medium flux, to control the cooling function of the cooling branch of battery and interior cooling branch respectively Rate.
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-is cold The first electronic valve of condenser-- the first expansion valve-heat exchanger-compressor.Refrigerant is after heat exchanger, temperature decline, battery After medium flows 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.Refrigerant flows through heat exchanger Later, heat exchange temperature declines, and refrigerant temperature is increased, and semiconductor heat exchange module is cooling by the higher refrigerant of portion temperature Later, heat exchanger is flowed anew through, so that heat exchange temperature declines, when battery medium flows through heat exchanger, medium temperature decline.By This can be with semiconductor 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 cold Matchmaker's temperature increases, and is then flowing through colling end, so that refrigerant temperature declines, improves the refrigeration work consumption of air-conditioning system, alleviates The refrigeration of on-board air conditioner is born.
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 practical feelings of on-vehicle battery Condition is preset, for example, target temperature can be set at 35 DEG C or so, heat when to battery when cooling down to battery When, target temperature can be set to 10 DEG C, and the object time can be set as 1 hour.Then, semiconductor is changed according to P1 and P2 The refrigeration work consumption of thermal modules is adjusted, so that battery can complete temperature adjusting within the object time, makes the temperature of on-vehicle battery Degree maintains 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 cooling mould Formula；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, need to battery into Row cooling processing, into refrigerating mode.Control the first electronic valve of control is opened, semiconductor refrigerating module forward direction power supply, by cold But it holds and the refrigerant for flowing through heat exchanger is cooled down.When cooling down to battery, the first electronic valve is opened, and passes through heat exchanger Medium in cooling pipe, 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；It is adjusted in fact if temperature regulatory demand power P 1 is greater than temperature Border power P 2 then obtains the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2, and according to power Difference increases 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 Degree adjusts actual power P2, then reduces the refrigeration work consumption of semiconductor heat exchange module and/or compressor, or keeps semiconductor heat exchange The refrigeration work consumption of module and/or 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 greater than temperature tune Actual power P2 is saved, and the temperature of battery is greater than the first preset temperature threshold, then controls semiconductor heat exchange module with the function that freezes entirely Rate 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, Increase 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 The refrigeration work consumption aperture on road.First preset temperature threshold can be preset according to the actual situation, such as can be 45 DEG C.It can To pass through the aperture for increasing the first expansion valve, while reducing the aperture of the second expansion valve to reduce the refrigeration of interior cooling branch Power, while increasing the refrigeration work consumption aperture of the cooling branch of battery.
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 increase the cold medium flux of the cooling branch of battery to reduce interior cold medium flux, to adjust, battery is cooling and car is cold But refrigerating capacity distribution, meanwhile, control semiconductor heat exchange module is run with full refrigeration work consumption, i.e., maximum refrigeration work consumption operation, with Alleviate interior cooling coolant quantity and reduce the influence that caused interior cooling effect reduces, and controls heat exchange blower fan with high revolving speed work Make.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, The aperture of the second expansion valve is then reduced, the aperture of the first expansion valve is increased, if the temperature in compartment does not reach air-conditioning setting Temperature, then it is preferential to meet interior refrigeration capacity requirement, at this time temperature regulatory demand power P 1 and temperature adjust actual power P2 it Between difference portion cooling power, provided by semiconductor heat exchange module.In battery refrigerating function opening process, real time monitoring The real-time cooling power information of the practical cooling power of battery pack and semiconductor heat exchange module, and according to interior cooling power demand With battery pack cooling power demand information, the aperture between the first expansion valve and the second expansion valve is determined, so that regulating cell is cold But it is distributed with the refrigerant of interior cooling circuit, so that the refrigeration work consumption for the cooling branch of battery that on-board air conditioner provides adds semiconductor The refrigeration work consumption that heat exchange module provides is equal to the temperature regulatory demand power P 1 of battery.In battery cooling procedure, if battery Temperature reach 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 has been filled Foot, 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.
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 compressor of air conditioner according to difference power Cooling 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 compressor of air conditioner cooling power it is 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 are obtained The difference power between actual power P2 is adjusted, and increases the heating power for being used for heater according to difference power；If temperature is adjusted Demand power P1 is less than or equal to temperature and adjusts actual power P2, then keeps 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 processed increases, the aperture of the first regulating valve increases, outside the power of semiconductor heat exchange module or heater, The revolving speed that pump can also be controlled improves, to increase the mass of medium for flowing through cooling flowing path cross-sectional area in the unit time, to mention The temperature of high 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 according to temperature regulatory demand power and temperature and exchange heat to semiconductor The refrigeration work consumption of module and/or compressor is controlled, and temperature to be adjusted when the temperature is excessively high in on-vehicle battery, makes vehicle The temperature for carrying battery 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 " is orientation based on the figure Or positional relationship, it 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 It must have a particular 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 Person implicitly includes at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, Three 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 machinery Connection, is also possible to be electrically connected；It can be directly connected, two elements can also be can be indirectly connected through an intermediary The interaction relationship of internal connection or two elements, unless otherwise restricted clearly.For the ordinary skill people of this field For member, 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 But fisrt feature is directly above or diagonally above the second feature above the second feature " above ", " above " and " above ", or only table Show that first feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " Fisrt 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, this field Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples Combination and combination.
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 (9)

1. a kind of humidity control system of on-vehicle battery characterized by comprising
Heat exchanger；
Compressor, the compressor are connect with the heat exchanger；
The condenser being connected with the compressor；
Battery thermal management module, the battery thermal management module connect to form heat exchange flow path with the heat exchanger；
Semiconductor heat exchange module, the semiconductor heat exchange module include colling end, fire end and heat exchange blower fan, the colling end or The one of them of fire end is connect with the heat exchanger, for being the heat exchanger heating power/refrigeration work consumption, the heat exchange wind Machine is connected with the another one of the colling end or fire end, and the heat exchange blower fan is to the air draft to outside compartment；
Controller, the controller respectively with the semiconductor heat exchange module, the compressor and battery thermal road module Connection.
2. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the semiconductor heat exchange module with Heat exchanger is connected in the battery thermal management module in parallel and connect on the heat exchange flow path to be formed with the heat exchanger, wherein partly leads Colling end/fire end entrance of body heat exchange module is connected with the first end of the heat exchanger, the semiconductor heat exchange module The outlet of colling end/fire 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 Colling end/fire end and the heat exchanger are connected in series, wherein colling end/fire end of the semiconductor heat exchange module enters Mouth is connected with the second end of the heat exchanger, colling end/fire end outlet of the semiconductor heat exchange module and the battery The entrance of thermal management module is connected.
4. the humidity control system of the on-vehicle battery as described in right wants 1, which is characterized in that the on-vehicle battery temperature adjusts system System further includes the cooling branch of car being connected with the compressor.
5. the humidity control system of the on-vehicle battery as described in right wants 4, which is characterized in that the interior cooling branch includes steaming Device is sent out, the evaporator is connected with the compressor.
6. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that
The battery thermal management module includes that the pump, the first temperature sensor, second temperature being arranged on the heat exchange flow path pass Sensor and flow sensor, the pump, the first temperature sensor, second temperature sensor and flow sensor and the controller Connection；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.
7. the humidity control system of on-vehicle battery as claimed in claim 6, 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.
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 heater, the heater is connect with the controller, for heating the medium in the heat exchange flow path.
9. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that further include for detecting the vehicle The battery status detection module of the electric current of battery is carried, the controller is also connected with the battery status detection module.
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CN105633508A (en) * 2014-10-31 2016-06-01 比亚迪股份有限公司 Battery system and control method thereof
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