CN109599614A - 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
CN109599614A
CN109599614A CN201710922905.8A CN201710922905A CN109599614A CN 109599614 A CN109599614 A CN 109599614A CN 201710922905 A CN201710922905 A CN 201710922905A CN 109599614 A CN109599614 A CN 109599614A
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China
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battery
temperature
heat exchange
cooling branch
exchange module
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CN201710922905.8A
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CN109599614B (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
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 temperature control method of on-vehicle battery and humidity control system, on-vehicle battery humidity control system includes: semiconductor heat exchange module, has fever end and colling end to provide heating power/cooling power；Multiple battery thermal management modules, the selectable colling end or fever end with semiconductor heat exchange module of multiple battery thermal management modules carry out heat exchange to form the first heat exchange flow path；Multiple on-board air conditioner modules, each on-board air conditioner module include the cooling branch of battery and refrigeration branch, and the cooling branch of each battery includes heat exchanger, and heat exchanger forms the second heat exchange flow path with the selectable conducting of accordingly battery thermal management module；Controller is connect with semiconductor heat exchange module, multiple battery thermal management modules and on-board air conditioner.Thus, it is possible to be carried out by temperature of the semiconductor heat exchange module to multiple batteries, so as to improve the cycle life of battery when the temperature difference between multiple batteries is larger.

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 temperature control method of on-vehicle battery, one kind are non-provisional Property computer readable storage medium and a kind of humidity control system of on-vehicle battery.
Background technique
Currently, on-vehicle battery system may include multiple batteries in electric car, due to position between each battery Difference, or each battery is supplied to due to the humidity control system of battery plus hot/cold power it is uneven, lead to each electricity There are larger differences for temperature between pond, and the temperature consistency of battery is poor, and then will lead to battery cycle life reduction.
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 first purpose of this invention is to propose a kind of humidity control system of on-vehicle battery, which can be with It is equal by temperature progress of the semiconductor heat exchange module to multiple batteries when temperature difference between multiple batteries is larger, so as to To improve the cycle life of battery.
Second object of the present invention is to propose a kind of temperature control method of on-vehicle battery.
Third object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of humidity control system of on-vehicle battery, Include: semiconductor heat exchange module, has fever end and colling end to provide heating power/cooling power；Multiple battery thermals Manage module, the multiple battery thermal management module it is selectable with the semiconductor heat exchange module in colling end or fever end into Row heat exchange is to form the first heat exchange flow path；Multiple on-board air conditioner modules, each on-board air conditioner module include the cooling branch of battery Road and refrigeration branch, the cooling branch of each battery includes heat exchanger, multiple heat exchangers respectively with the multiple electricity Pond thermal management module is connected, and the heat exchanger forms the second heat exchange with the selectable conducting of the accordingly battery thermal management module Flow path, each refrigeration branch includes compressor, and multiple compressors are connected in series with the multiple heat exchanger respectively； Controller is connect with the semiconductor heat exchange module, the multiple battery thermal management module and the on-board air conditioner.
The humidity control system of on-vehicle battery according to an embodiment of the present invention obtains the temperature of multiple batteries by controller Degree, and judge whether the temperature difference between multiple batteries is greater than preset temperature threshold, and the temperature difference between multiple batteries is big When preset temperature threshold, the temperature of multiple batteries is carried out balanced.The system can be in the temperature between multiple batteries as a result, When difference is larger, carried out by temperature of the semiconductor heat exchange module to multiple batteries, so as to improve the cycle life of battery.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of temperature control method of on-vehicle battery, The following steps are included: obtaining the temperature of the multiple battery；It is default to judge whether the temperature difference between the multiple battery is greater than Temperature threshold；If it is greater than the preset temperature threshold, then the temperature of the multiple battery is carried out balanced.
The temperature control method of on-vehicle battery according to an embodiment of the present invention obtains the temperature of multiple batteries first, Then judge whether the temperature difference between multiple batteries is greater than preset temperature threshold, if it is greater than preset temperature threshold, then to more The temperature of a battery carries out balanced.This method can be changed when the temperature difference between multiple batteries is larger by semiconductor as a result, Thermal modules carry out, so as to improve the cycle life of battery the temperature of multiple batteries.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium Matter is stored thereon with computer program, which 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 of multiple batteries, then first Judge whether the temperature difference between multiple batteries is greater than preset temperature threshold, if it is greater than preset temperature threshold, then to multiple electricity The temperature in pond carries out equilibrium, when larger so as to the temperature difference between multiple batteries, by semiconductor heat exchange module to more The temperature of a battery carries out, so as to improve the cycle life of battery.
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 block diagram of the humidity control system of on-vehicle battery according to an embodiment of the invention；
Fig. 2 is the control topological diagram of the humidity control system of on-vehicle battery according to an embodiment of the invention；
Fig. 3 a-3b is the block diagram of the humidity control system of on-vehicle battery in accordance with another embodiment of the present invention；
Fig. 4 a-4b is the block diagram of the humidity control system of the on-vehicle battery of another embodiment according to the present invention
Fig. 5 is the schematic diagram of air outlet according to an embodiment of the invention；
Fig. 6 is the flow chart of the temperature control method of on-vehicle battery according to an embodiment of the invention；
Fig. 7 is the flow chart of the temperature control method of the on-vehicle battery of another embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings come describe the embodiment of the present invention proposition on-vehicle battery temperature control method, non-transitory meter Calculation machine readable storage medium storing program for executing and humidity control system.
Fig. 1 a-1b is the block diagram of the humidity control system of on-vehicle battery according to an embodiment of the invention.Such as Shown in Fig. 1 a-1b, the system include: semiconductor heat exchange module 3, multiple battery thermal management modules, multiple on-board air conditioner modules, Controller (not specifically illustrated in figure).
Wherein, semiconductor heat exchange module 3 has fever end and colling end to provide heating power/cooling power.It is multiple The selectable colling end or fever end with semiconductor heat exchange module 3 of battery thermal management module carries out heat exchange to form first Exchange heat flow path.
Each on-board air conditioner module includes the cooling branch of battery and refrigeration branch, and the cooling branch of each battery includes changing Hot device, multiple heat exchangers are connected with multiple battery thermal management modules respectively, and heat exchanger and accordingly battery thermal management module are optional The conducting selected forms the second heat exchange flow path, and each refrigeration branch includes compressor.It is controller and semiconductor heat exchange module 3, more A battery thermal management module and on-board air conditioner connection, for obtaining the temperature of multiple batteries, and judge the temperature between multiple batteries Degree difference whether be greater than preset temperature threshold, and the temperature difference between multiple batteries be greater than preset temperature threshold when, to multiple electricity The temperature in pond carries out balanced.
Further, such as Fig. 1 a-1b, battery includes the first battery 41 and the second battery 42, and compressor includes the first compression Machine 11 and the second compressor 12, heat exchanger include First Heat Exchanger 21 and the second heat exchanger 22, and battery thermal management module includes the The first end of one battery thermal management module 51 and the second battery thermal management module 52, the first battery thermal management module 51 passes through first Triple valve 61 is connected with the first end at the end that generates heat in the first end of First Heat Exchanger 21 and semiconductor heat exchange module 3 respectively, and first The second end of battery thermal management module 51 is changed with the second end of First Heat Exchanger 21 and semiconductor respectively by the second triple valve 62 The second end at fever end is connected in thermal modules 3.
The first end of second battery thermal management module 52 passes through first of third triple valve 63 respectively with the second heat exchanger 22 End is connected with the first end of colling end in semiconductor heat exchange module 3, and the second end of the second battery thermal management module 52 passes through the 4th Triple valve 64 is connected with the second end of colling end in the second end of the second heat exchanger 22 and semiconductor heat exchange module 3 respectively.
Further, controller is by control power supply direction with will be in the low battery of temperature and semiconductor heat exchange module 3 Fever end is connected, and the high battery of temperature is connected in semiconductor heat exchange module 3 colling end, and controller is also to according to more Temperature difference between a battery and equalization requirement object time t generate equalization requirement power, with according to equalization requirement power to more The temperature of a battery carries out balanced.Object time t can be preset according to the actual situation, for example, can be 1 hour.
It is installed on vehicle it is appreciated that battery refers to, provides power output for vehicle and be other electricity consumptions on vehicle Equipment provides the energy storage device of electricity, can be repeatedly charged.Battery can be battery pack or battery modules.
Specifically, equalization requirement power i.e. the temperature difference between multiple batteries is adjusted in preset range, such as 3 DEG C with When interior, heating power/cooling power for needing.Semiconductor heat exchange module 3 has fever end and colling end, works as power supply After reversal connection, generate heat end and colling end place-exchange.Fig. 1 a is the signal of the positive power supply temperature regulating system of semiconductor heat exchange module 3 Figure, Fig. 1 b are the schematic diagram of semiconductor heat exchange module reverse power supply humidity control system.
As shown in Fig. 2, controller may include battery manager, battery thermal management controller, on-board air conditioner controller and Semiconductor control.Battery manager can carry out CAN (Controller Area Network, control with semiconductor control Device local area network) communication.Battery manager can detecte the voltage, electric current, temperature of each battery for being managed to battery Etc. information, when the temperature difference between battery be more than preset temperature threshold when, battery manager send battery temperature equalization function Start information to on-board air conditioner controller, when the temperature difference between battery is met the requirements, such as the temperature difference between battery When less than 3 DEG C, issues battery temperature equilibrium and complete information.Battery manager can also join according to current battery temperature and electric current Number, and according to the heat generation parameter of the average current estimation power battery within a period of time, while can be according to current multiple electricity Temperature difference and object time between pond estimate equalization requirement power P 3, and equalization requirement power P 3 are sent to vehicle-mounted sky Adjust controller.On-board air conditioner controller can carry out CAN communication, vehicle-mounted sky with semiconductor control and battery thermal management controller Adjust controller that can send battery temperature equalization function starting information and 3 turns of equalization requirement power P receiving battery manager Issue semiconductor control and battery thermal management controller.
Semiconductor control can carry out carry out CAN communication with on-board air conditioner controller and battery thermal management controller, with Just it determines the need for opening battery temperature equalization function, semiconductor control can be to the supplier of electricity of semiconductor heat exchange module 3 It is controlled to power.When there are when the larger temperature difference, such as the temperature difference is more than 8 DEG C between two batteries, then, semiconductor control Device control semiconductor heat exchange module 3 processed enters battery temperature balanced operation mode.The colling end of semiconductor heat exchange module 3 accesses temperature The heat exchange flow path of higher battery is spent, fever end is linked into the heat exchange flow path of the lower battery of temperature, with higher to temperature Battery is cooled down, and is heated to the lower battery of temperature so that between the higher battery of temperature and the lower battery of temperature into The exchange of row heat, semiconductor heat exchange module 3 improve the heat exchange rate between battery.For example, Fig. 1 a show the first battery 41 Temperature it is lower, the temperature of the second battery 42 is higher；The temperature that Fig. 1 b show the first battery 41 is higher, the temperature of the second battery 42 It spends lower.By changing the power supply direction of semiconductor heat exchange module 3, the temperature equalization of battery can be completed.Battery coolant liquid is straight It connects and flows into semiconductor heat exchange module 3, the heat exchange efficiency of battery also can be improved.During heat/cool down to battery, half Conductor heat exchange module 3 is also in real time according to equalization requirement power regulation heating power/cooling power, to complete electricity within the object time The temperature equalization in pond.
Equalization requirement power P 3 includes demand for heat power P 3a and cooling requirement power P 3b, the matter between two batteries When amount, internal resistance are identical with electric current, when cooling down to battery, battery manager can be according to formula:Generate equal cooling requirement power P 3b；When heating to battery, battery manager can According to formula:Generate demand for heat power P 3a.Wherein, Δ T1For two batteries it Between temperature gap, t is the object time, and C is the specific heat capacity of battery, and M is the quality of battery, and I is the electric current of battery, and R is battery Internal resistance.
When the quality of two batteries, electric current and unequal internal resistance, lower with 1 temperature of battery, 2 temperature of battery is higher, electricity Pond 1 needs to heat, and for battery 2 needs cooling, battery manager (1) can calculate demand for heat power according to the following formula P3a calculates cooling requirement power P 3b with and according to formula (2):
Wherein, Δ T1For the temperature gap between two batteries, t is the object time, and C is the specific heat capacity of battery, M1It is first The quality of battery, M2For the quality of the second battery, I1For the electric current of the first battery, I2For the quality of the second battery, R1For the first electricity Internal resistance, R2Temperature change for the internal resistance of the second battery, the first battery 41 isThe temperature of second battery 42 Variation are as follows:The electric current heat production of battery is completely counterbalanced by the control method of above-mentioned formula, so in entire electricity During the temperature equalization of pond, the higher battery temperature of temperature will not rise, but balanced demand power is higher.
Following introduction another kind regulative mode, i.e., only consider to reduce the temperature difference between battery as early as possible, not guarantee that Whether the temperature of battery can rise.It is not very high that such case, which is suitable for battery temperature, and the temperature difference between battery is larger When, it is not necessary that the temperature for limiting battery does not increase.Specific calculation formula is as follows:
Assuming that first battery 41 needs to cool down, the second battery 42 when the temperature of the first battery 41 is higher than electric second battery 42 Need to heat, then heating power caused by the electric current between two batteries is different, which differs, is | I1 2R1-I2 2R2|, battery manager can Demand for heat power P 3a, which is calculated, with (3) according to the following formula calculates cooling requirement power P 3b with and according to formula (4):
That is P3a=P3b.
Wherein, Δ T1For the temperature gap between two batteries, t is the object time, and C is the specific heat capacity of battery, M1It is first The quality of battery, M2For the quality of the second battery, I1For the electric current of the first battery, I2For the quality of the second battery, R1For the first electricity Internal resistance, R2For the internal resistance of the second battery
After entering battery temperature balanced operation mode, controller can be according to demand for heat power P 3a and cooling requirement The power of semiconductor heat exchange module 3 is adjusted in the larger value in power P 3b.Such as P3a >=P3b, then semiconductor exchange heat mould Block 3 is run according to demand for heat power P 3a；If P3a < P3b, semiconductor heat exchange module 3 is according to cooling requirement power P 3b Operation.Or semiconductor heat exchange module adjust operating power, if P1a >=P3b, allow semiconductor heat exchange module 3 by According to the Power operation for being greater than demand for heat power P 3a；If P3a < P3b, semiconductor heat exchange module 3 is according to greater than cooling requirement Power P 3b operation.Meanwhile in battery temperature balancing procedure, it is ensured that the heating power at semiconductor heat exchange module fever end >= P3a, cooling power >=P3b of colling end, so that fever end and colling end are all satisfied temperature equalization power demand.
It is appreciated that in the present invention, when 3 power of semiconductor heat exchange module increases, the cooling of colling end can be increased simultaneously The heating power of power and fever end.
As shown in Fig. 1 a-1b, each battery thermal management module includes the pump 502 being arranged on heat exchange flow path, the first temperature Sensor 504, second temperature sensor 505 and flow sensor 506, heater 501 and media Containers 503；Wherein: pump 502 For making the media flow in heat exchange flow path；First temperature sensor 504 is used to detect the entrance for the medium for flowing into on-vehicle battery Temperature；Second temperature sensor 505 is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor 506 is used for The flow velocity of medium in detection heat exchange flow path；Media Containers 503 are for storing and providing medium to heat exchange flow path；Heater 501 Medium for exchanging in hot flowpath is heated.Further, according to one embodiment of present invention, controller is also used to: Obtain the temperature of multiple batteries, and when the temperature of any one battery is greater than the first temperature threshold, control humidity control system into Enter refrigerating mode, and when the temperature of any one battery is less than second temperature threshold value, control humidity control system enters heating Mode.Wherein the first temperature threshold is greater than second temperature threshold value, such as the first temperature threshold can be 40 DEG C, second temperature threshold value It can be 0 DEG C.
The temperature that controller is also used to obtain multiple batteries adjusts actual power P2 and temperature regulatory demand power P 1, and root Actual power P2 is adjusted according to the temperature of multiple batteries and the temperature to multiple batteries is adjusted in temperature regulatory demand power P 1.
Specifically, as shown in Fig. 1 a-1b, on-board air conditioner module includes the cooling branch of battery and refrigeration branch, each battery A corresponding refrigeration branch, i.e. the first refrigeration branch 101 and the second refrigeration branch 102, each refrigeration branch include compressor and Condenser 10, to provide refrigeration work consumption.Each heat exchanger includes two pipelines, and first pipe is mutually independent with second pipe Close on setting, the medium in first pipe and second pipe can mutually exchange heat so that in pipeline medium (refrigerant, water, oil, The media such as the flow medias such as air or phase-change material or other chemicals) independently of each other, first pipe is connected with compressor, the Two pipelines are connected with battery thermal management module, wherein what is flowed in first pipe is refrigerant, and what is flowed in second pipe is coolant liquid. First Heat Exchanger 21 is corresponding with the cooling branch 201 of the first battery, and the second heat exchanger 22 is corresponding with the cooling branch 202 of the second battery, And the cooling branch of each battery includes electronic valve and expansion valve, the cooling branch of each battery of open and close control by controlling electronic valve The opening and closing on road controls the coolant rate of the cooling branch of battery, by controlling the aperture of expansion valve to control corresponding battery The cooling power of cooling branch.
Battery when the temperature is excessively high, controller controls on-board air conditioner refrigerating function and opens, the starting of battery refrigerating function, the Refrigerant and the flow direction of coolant liquid in second pipe are respectively as follows: compressor-condenser-electronic valve-expansion in one pipeline Valve-heat exchanger-compressor；Heat exchanger-battery thermal management module-battery-battery thermal management module-heat exchanger.Certainly, When the temperature of battery is lower, battery heating function is opened, and heater is opened, while electronic valve being kept to close, and heater is to cold But liquid is heated, to provide heating power.
During cooling down to battery, controller also obtains the temperature regulatory demand power P 1 and temperature of battery in real time Degree adjusts actual power P2, wherein the temperature of battery is adjusted to setting within the object time by temperature regulatory demand power P 1 Target temperature, it is desirable to provide to the power of battery, battery temperature adjusts actual power P2 and currently carries out temperature tune to battery When section, the actual power that battery obtains, target temperature and object time are setting value, can be according to the actual conditions of on-vehicle battery It is preset, for example, target temperature can be set at 35 DEG C or so, and the object time can be set as 1 when cooling down to battery Hour.Controller can adjust actual power P2 to the refrigeration of compressor according to the temperature regulatory demand power P 1 and temperature of battery Power is adjusted, so that battery can complete temperature adjusting within the object time, maintains the temperature of on-vehicle battery default Range, avoids that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
Adjusting actual power P2 and temperature adjusting below with reference to the temperature how description of specifically embodiment obtains battery needs Seek power P 1.
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 battery opening temperature is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (7):
ΔT1* (7) 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 controller generates second by following formula (8) Temperature regulatory demand power:
I2* R, (8),
Wherein, I is average current, and R is the internal resistance of battery.
Specifically, the charging and discharging currents parameter of battery can be detected by current Hall sensor, controller can be according to one The current parameters of battery, estimate the average current of battery in the section time.
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。
According to one embodiment of present invention, the inlet temperature that controller is detected according to the first temperature sensor 504 respectively Second temperature difference Δ T is generated with the outlet temperature that second temperature sensor 505 detects2, and according to the second temperature of each battery Poor Δ T2Actual power P2 is adjusted with the flow velocity v that flow sensor 506 the detects temperature for generating battery.
Further, according to one embodiment of present invention, temperature is generated by following formula and adjusts actual power P2:P2 =Δ T2* c*m, wherein Δ T2Poor for second temperature, c is the specific heat capacity of medium in flow path, and m is to flow through flow path in the unit time The mass of medium of cross-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, controller judges whether battery needs to carry out temperature adjusting, if the temperature of some battery Too high or too low, opening temperature regulatory function is spent, and sends slow-speed of revolution information to pump, pump is to default revolving speed (such as slow-speed of revolution) beginning Work.Then, controller is reached by the initial temperature (i.e. Current Temperatures) of each battery of acquisition, target temperature and 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 (7) can calculate the first temperature regulatory demand power of each battery.Meanwhile controller obtains each battery default Average current I in time, and the second temperature regulatory demand power of each battery can be calculated according to formula (8).Then, Controller can calculate temperature according to the first temperature regulatory demand power and second temperature regulatory demand power of each battery The temperature of battery (is adjusted to the demand power of target temperature) by regulatory demand power P 1 within the object time, wherein when right When battery is cooled down, P1=Δ T1*C*M/t+I2* R, when being heated to battery, P1=Δ T1*C*M/t-I2*R.And And controller obtains the first temperature sensor and second temperature sensor detection temperature information respectively, and obtains flow sensor The flow rate information of detection, according to formula P2=Δ T2* the temperature that c*m can calculate each battery adjusts actual power P2.
In an embodiment of the present invention, on-vehicle battery humidity control system further include: the battery shape being electrically connected with the controller State detection module, battery status detection module are used to detect the electric current of on-vehicle battery.Battery status detection module can be electric current Hall sensor.
Specifically, as shown in Fig. 2, the controller in the humidity control system of on-vehicle battery may include: battery thermal management Controller, on-board air conditioner controller and battery manager and semiconductor control=, battery thermal management controller can be with first Temperature sensor 504, second temperature sensor 505 and flow sensor 506 are electrically connected, and are carried out with pump 502 and heater 501 CAN communication, and according to the specific heat capacity of medium, the density of medium, flow path cross-sectional area, obtain temperature adjust actual power P2, And the revolving speed of pump 502 and the power of control heater 501 are controlled, and CAN communication can be carried out with on-board air conditioner controller.Battery Manager can detecte the information such as the voltage, electric current, temperature of battery, and according to the target of battery for being managed to battery The specific heat capacity C of temperature, object time t and battery, the mass M of battery, battery internal resistance R and electric current I, obtain temperature adjust need Power P 1 is sought, and CAN communication can be carried out with on-board air conditioner controller, so that on-board air conditioner controller can adjust need according to temperature Power P 1 and temperature adjusting power of the actual power P2 to compressor and the aperture to expansion valve is asked to be adjusted.
Coolant liquid flows into the inside of battery from the entrance of flow path, flows out from the outlet of flow path, to realize battery and cooling Heat exchange between liquid.Pump 502 is mainly used for providing power, and media Containers 503 are mainly used for storing coolant liquid and receive to temperature The coolant liquid for spending regulating system addition, when the coolant liquid in humidity control system is reduced, the coolant liquid in media Containers 503 can It is automatically replenished.Temperature of first temperature sensor 504 to detect path inlet coolant liquid, second temperature sensor 505 to Detect the temperature of flowing path outlet coolant liquid.Stream of the flow sensor 506 to detect coolant liquid in pipeline in humidity control system Fast information.That is, the temperature for the path inlet coolant liquid that battery thermal management controller is detected according to the first temperature sensor 504 The temperature that the temperature for the flowing path outlet coolant liquid that degree, second temperature sensor 505 detect, flow sensor 506 detect adjusts system In system in pipeline coolant liquid flow rate information, according to formula P2=Δ T2* c*m, the temperature that can calculate each battery are adjusted Actual power P2.
Illustrate on-board air conditioner how according to the temperature of battery adjusting actual power P2 and temperature below with reference to specifically embodiment The temperature of battery is adjusted in degree regulatory demand power P 1.
According to one embodiment of present invention, when humidity control system work is in refrigerating mode, controller is also used to When the temperature of some battery adjusts actual power P2 less than battery temperature regulatory demand power P 1, increase the refrigeration function of compressor Rate；When humidity control system work is in heating mode, controller is also used to adjust actual power P2 in the temperature of some battery When less than battery temperature regulatory demand power P 1, increase the heating power of heater.
That is, when being cooled down to battery, if the temperature of any one battery adjusts actual power P2 and is less than electricity Pond temperature regulatory demand power P 1, then controller can increase the refrigeration work consumption of associated compressors, while increasing expansion valve Aperture, to increase the aperture of the cooling branch of battery, so that increasing temperature adjusts actual power P2, so that battery can be in target Interior completion temperature is adjusted.When being heated to battery, if the temperature of any one battery adjusts actual power P2 and is less than battery Temperature regulatory demand power P 1, then controller can increase the heating power of respective heater 501, to increase temperature adjusting Actual power P2, so that battery can complete temperature adjusting within the object time.
According to one embodiment of present invention, as shown in Fig. 1 a-1b, First Heat Exchanger 21 and the cooling branch of the first battery 201 is corresponding, and the second heat exchanger 22 is corresponding with the cooling branch 202 of the second battery, and the cooling branch 201 of the first battery and the first compression Machine 11 is connected, and the cooling branch 202 of the second battery is connected with the second compressor 12, and controller can be also used for: being when temperature is adjusted Work unite in refrigerating mode, and when the temperature of the first battery 41 is greater than the temperature of the second battery 42, to realize the first battery and the The temperature equalization of two batteries can increase the aperture of the cooling branch 201 of the first battery and reduce the cooling branch 202 of the second battery Aperture, and work as humidity control system and work in refrigerating mode, and be greater than the temperature of the first battery 41 in the temperature of the second battery 42 When spending, opening for the cooling branch 202 of the second battery can be increased to realize that the temperature equalization of the first battery and the second battery is also possible that Spend and reduce the aperture of the cooling branch 201 of the first battery.
Specifically, if there is the temperature of a battery is higher than 40 DEG C, then humidity control system refrigerating function starts, cell tube Reason device sends battery refrigerating function starting information and gives on-board air conditioner controller.Battery manager acquires current battery temperature and electric current Parameter, and according within a period of time average current estimation battery heat generation parameter, according to the current mean temperature of battery pack with The temperature regulatory demand power P 1 of the average current estimation battery of difference and battery between battery target temperature, and electricity Pond cooling requirement power is sent to on-board air conditioner controller.Battery manager sends the volume for needing to carry out cooling battery simultaneously Number.
If battery manager detects the temperature of the first battery 41 lower than 35 DEG C, battery manager sends the first battery 41 cooling completion information.If battery manager detects the temperature of the second battery 42 lower than 35 DEG C, battery manager is sent The cooling of second battery 42 completes information.If detect 3 DEG C higher than the temperature of the second battery 42 of the temperature of the first battery 41 with On, then battery manager sends the cooling power message information for increasing by the first battery 41.If the temperature of the second battery 42 is than High 3 DEG C of temperature or more of one battery 41, then battery manager sends the battery cooling power message information for increasing by the second battery 42.
If battery manager detects that the temperature of 2 batteries is below 35 DEG C, battery is cooling to be completed, battery manager The cooling information of completing of battery is sent to on-board air conditioner.If the temperature of battery is still higher than after refrigerating function opens 1 hour 35 DEG C, then battery manager increases battery cooling power demand.
If there is a battery temperature be lower than 0 DEG C, then the humidity control system of humidity control system on-vehicle battery plus Heat function starting.Battery manager acquires current battery temperature and current parameters, and according to the average current within a period of time The heat generation parameter for estimating battery, according to the average electricity of difference and battery between battery actual temperature and battery target temperature The temperature regulatory demand power P 1 of stream estimation power battery, and temperature regulatory demand power P 1 is sent to battery thermal management control Device, so that battery thermal management controller, which controls heater 501 according to temperature regulatory demand power P 1, carries out heating work.
If battery manager detects that the temperature of the first battery 41 is higher than 10 DEG C, battery manager sends the first battery Information is completed in 41 heating.If battery manager detects that the temperature of the second battery 42 is higher than 10 DEG C, battery manager is sent Information is completed in the heating of second battery 42.If detecting low 3 DEG C of temperature or more of the temperature of the first battery 41 than the second battery 4, Then battery manager sends the battery heating power message information for increasing by the first battery 41.If detecting the temperature of the second battery 42 Low 3 DEG C of electro-temperature or more than the first battery 41 are spent, then battery manager sends the heating power message for increasing by the second battery 42 Information.
If battery manager detects that the temperature of 2 batteries is above 10 DEG C, battery heating is completed, battery manager It sends battery heating and completes information to battery management controller.If still having the temperature of battery after heating function opens 2 hours Degree still is below 10 DEG C, then battery manager increases the heating power of heater.
If the temperature of battery is between 0 DEG C to 40 DEG C, and the temperature difference of the first battery and the second battery 42 is more than 8 DEG C, then battery manager sends battery temperature equalization function starting information.Battery manager acquires the temperature between present battery Difference and target time for balance estimate battery pack required temperature equal power, send battery temperature equal power demand information, with Keep semiconductor control control semiconductor heat exchange module equal to battery progress temperature according to battery temperature equal power demand information Weighing apparatus.In battery temperature equalization function start-up course, if battery manager, which detects, meets battery heating function entry condition, Then battery manager exits temperature equalization function, into battery heating function.If battery manager detects that meet battery cold But function entry condition, then battery manager exits temperature equalization function, into battery refrigerating function.If 41 He of the first battery Second battery, 42 battery mean temperature is differed less than 3 DEG C, then battery manager sends battery temperature equalization function and completes information.
On-board air conditioner obtain it is electric after, if on-board air conditioner controller receive battery manager transmission battery refrigerating function starting Information, then battery refrigerating function starts, and on-board air conditioner controller sends battery refrigerating function starting information and gives battery thermal management control Device processed.On-board air conditioner controller receives the temperature regulatory demand power P 1 for the battery that battery manager is sent, and the information is turned Issue battery thermal management controller and.In battery cooling procedure, on-board air conditioner controller controls the first electronic valve 213 and first Expansion valve 212 is opened.On-board air conditioner controller receives the temperature tune of the water temperature information that battery thermal management controller is sent and battery Actual power P2 is saved, and the information is transmitted to battery manager and semiconductor heat exchange module 3.In battery cooling procedure, vehicle The temperature regulatory demand power P 1 and temperature for carrying air-conditioner controller control cell adjust actual power P2, if the temperature tune of battery It saves actual power P2 and is less than temperature regulatory demand power P 1, then on-board air conditioner controller control increases refrigeration work consumption.If battery Manager detects the temperature of the first battery 41 than high 3 DEG C of temperature or more of the second battery 42, then battery manager, which is sent, increases The cooling power message information of first battery 41 is to on-board air conditioner, then on-board air conditioner controller is according to the cold of the first battery 41 of increase But power message information increases the aperture of the first expansion valve 212 of the cooling branch 201 of the first battery and reduces the cooling of the second battery The aperture of first expansion valve 212 of branch 202, so that the cooling power of the first battery 41 increases, the cooling function of the second battery 42 Rate is reduced, to reduce the battery temperature difference between battery.If the temperature of the second battery 42 is than the temperature of the first battery 41 High 3 DEG C or more, then battery manager sends the battery cooling power message information for increasing by the second battery 42, on-board air conditioner controller Increase the first expansion valve of the cooling branch 202 of the second battery according to the battery cooling power message information for increasing by the second battery 42 212 aperture second simultaneously reduces the aperture that big first battery cools down the first expansion valve 212 of branch 201, so that the first battery 41 Cooling power reduce, the cooling power of the second battery 42 increases, to reduce the battery temperature difference between battery.
In battery cooling procedure, if the first battery 41 that on-board air conditioner controller receives battery manager transmission is cold But information is completed, then the first electronic valve 213 for controlling the cooling branch 201 of the first battery is closed.If on-board air conditioner controller connects The cooling completion information of the second battery for receiving battery manager transmission, then control the first electronics of the cooling branch 202 of the second battery Valve 213 is closed.If on-board air conditioner controller receives the cooling completion information of battery of battery manager transmission, battery is forwarded To battery thermal management controller and semiconductor heat exchange module, battery is cooling to be completed cooling information of completing.
Cooling power is provided for battery except on-board air conditioner can be passed through, can also be provided by semiconductor heat exchange module for battery cold But power.
According to one embodiment of present invention, when humidity control system works in refrigerating mode, and the temperature of the first battery Greater than the second battery temperature when, as shown in Figure 1 b, controller is also used to control the power supply direction and of semiconductor heat exchange module The opening/closing colling end for making semiconductor heat exchange module in the channel of one to the 4th triple valve 61-64 is connected with First Heat Exchanger 21, makes The fever end of semiconductor heat exchange module is connected with the second heat exchanger 22；When humidity control system works in refrigerating mode, and the When the temperature of two batteries is greater than the temperature of the first battery, as shown in Figure 1a, controller is also used to control semiconductor heat exchange module The opening/closing colling end for making semiconductor heat exchange module in power supply direction and the channel of first to fourth triple valve 61-64 is changed with second Hot device 22 is connected, and the fever end of semiconductor heat exchange module is made to be connected with First Heat Exchanger 21.
Specifically, if semiconductor control receives the battery refrigerating function starting information of on-board air conditioner controller transmission, Then battery refrigerating function starts, and semiconductor control sends battery refrigerating function starting information and gives battery thermal management controller.Half Conductor controller receives the temperature regulatory demand power P 1 for each battery that on-board air conditioner is sent.Semiconductor control receives battery The temperature of water temperature information and each battery that thermal management controller is sent adjusts actual power.In battery refrigerating function opening process In, if semiconductor control receives the battery cooling power message letter of the first battery of increase by 41 of battery manager transmission Breath, i.e. the temperature of the first battery 41 is than high 3 DEG C of temperature or more of the second battery 42, then semiconductor control control semiconductor heat exchange 3 reverse power supply of module, battery thermal management controller controls the channel 1 of the first triple valve 61 and the second triple valve 62 and channel 2 is opened It opens, and the channel 1 for controlling third triple valve 63 and the 4th triple valve 64 is opened, channel 2 is opened, so that the first electricity of colling end access The circulation loop in pond 41, fever terminate the circulation loop into the second battery 42.If semiconductor control receives battery management Device sends the cooling power message information for increasing by the second battery 42, i.e. the temperature of the second battery 42 is higher than the temperature of the first battery 41 3 DEG C or more, then the positive power supply of semiconductor control control semiconductor heat exchange module 3, battery thermal management controller control the one or three The channel 1 of port valve 61 and the second triple valve 62 is opened, channel 2 is opened, and controls third triple valve 63 and the 4th triple valve 64 Channel 1 and channel 2 are opened, so that colling end accesses the circulation loop of the second battery 42, fever terminates following into the first battery 41 Loop back path.If semiconductor control does not receive above- mentioned information, the power supply of semiconductor heat exchange module is cut off.
If there is the temperature of a battery is lower than 0 DEG C, then humidity control system heating function starts.Add to battery When hot, except heating power can be provided by heater 501, also heating power can be provided by semiconductor heat exchange module.
According to one embodiment of present invention, when humidity control system works in heating mode, and the temperature of the first battery Less than the second battery temperature when, controller is also used to control power supply direction and first to fourth threeway of semiconductor heat exchange module The opening/closing fever end for making semiconductor heat exchange module in the channel of valve 61-64 is connected with First Heat Exchanger 21, semiconductor heat exchange module Colling end be connected with the second heat exchanger 22.It is and small in the temperature of the second battery when humidity control system works in heating mode When the temperature of the first battery, controller is also used to control power supply direction and first to fourth triple valve of semiconductor heat exchange module The opening/closing fever end for making semiconductor heat exchange module in the channel of 61-64 is connected with the second heat exchanger 22, semiconductor heat exchange module Colling end is connected with First Heat Exchanger 21.
Specifically, if semiconductor control receives the battery heating function starting information of on-board air conditioner transmission, battery Heating function starting, semiconductor control send battery heating function starting information and give battery thermal management controller.Semiconductor changes Controller receives the temperature regulatory demand power P 1 for the battery that on-board air conditioner is sent.Semiconductor control receives battery thermal management control The temperature of water temperature information and each power battery that device processed is sent adjusts the information such as actual power P2.It is opened in battery heating function In the process, if semiconductor control, which receives battery manager and sends, increases by 41 heating power message information of the first battery, i.e., Than low 3 DEG C of temperature or more of the second battery 4, then controller control semiconductor heat exchange module 3 is positive supplies the temperature of first battery 41 The channel 1 of electricity, the first triple valve 61 and the second triple valve 62 is opened, channel 2 is closed, third triple valve 63 and the 4th triple valve 64 Channel 1 open, channel 2 close so that semiconductor heat exchange module fever terminate the circulation loop into the first battery 41, semiconductor Heat exchange module colling end accesses the circulation loop of the second battery 42.Increase if semiconductor control receives battery manager and sends Add 42 heating power message information of the second battery, then controller controls 3 reverse power supply of semiconductor heat exchange module, the first triple valve 61 It is opened with the channel 1 of the second triple valve 62, the closing of channel 2, the channel 1 of third triple valve 63 and the 4th triple valve 64 opens, is logical Road 2 is closed so that the fever of semiconductor heat exchange module terminates the circulation loop into the second battery 42, and semiconductor heat exchange module is cooling Terminate the circulation loop into the first battery 41.If semiconductor control does not receive above- mentioned information, semiconductor heat exchange is cut off Modular power source.
In semiconductor heat booster heating process, if the temperature regulatory demand power P 1 of battery is greater than temperature and adjusts reality Power P 2, then semiconductor heat exchange module increases heating power.
It is appreciated that heater 501 is closed in refrigerating function starting.In heating function starting, heater 501 is opened It opens, the first electronic valve 213 is closed.
Battery temperature regulating system can also as shown in Figure 3 a-3b, and semiconductor heat exchange module is also guaranteed replacement air-heater (third wind Machine and four fan device), heat exchange blower fan corresponds to the fever end of the semiconductor heat exchange module and colling end is arranged, with third wind in figure Machine corresponds to colling end setting, for the corresponding fever end setting of four fan device.It is cooled down when to battery, and the temperature of the first battery Greater than the second battery temperature when, controller is also used to change 3 power supply of semiconductor heat exchange module, control first to fourth 3 Port valve 61-64 make the colling end of semiconductor heat exchange module and First Heat Exchanger 21 be connected, while controlling four fan device work, such as Shown in Fig. 3 b；It is cooled down when to battery, and when the temperature of the second battery is greater than the temperature of the first battery, controller is also used to Change 3 power supply of semiconductor heat exchange module, first to fourth triple valve 61-64 of control makes the colling end of semiconductor heat exchange module With the second heat exchanger 22 be connected, while control third blower work, as shown in Figure 3a.
The main distinction of Fig. 1 a-1b and Fig. 3 a-3b are, heat exchange blower fan, the side in Fig. 1 a-1b are increased in Fig. 3 a-3b Case needs to access simultaneously in the circulation loop of wherein one end of semiconductor heat exchange module between two batteries, temperature just may be implemented Degree is balanced, i.e., necessary battery heating, another battery is cooling while carrying out, and Fig. 1 a-1b can be fast implemented between battery Temperature equalization.And scheme shown in Fig. 3 a-3b, then it only can be linked into temperature equalization circuit by controlling one of battery, The other end carries out heat exchange by blower and external environment can be individually by first that is, if the temperature of the first battery is higher Battery 41 accesses colling end, and without the second battery 42 is linked into heating circuit, the scheme of Fig. 3 a-3b can make the second electricity Faster complete cooling in pond 42.
Specifically, as shown in Figure 3 a-3b, semiconductor heat exchange module obtain it is electric after, if semiconductor control receives vehicle-mounted sky The battery refrigerating function for adjusting controller to send starts information, then battery refrigerating function starts, and semiconductor changer controller sends battery Refrigerating function starting information gives battery thermal management controller.Semiconductor control receives each electricity that on-board air conditioner controller is sent The temperature regulatory demand power P 1 in pond.Semiconductor control receives the water temperature information and each electricity that battery thermal management controller is sent The temperature in pond adjusts actual power.In battery refrigerating function opening process, if semiconductor control receives battery management The battery cooling power message information for the first battery of increase by 41 that device is sent, i.e., the temperature of the first battery 41 is than the second battery 42 High 3 DEG C of temperature or more, then 3 reverse power supply of semiconductor heat exchange module is controlled, controller controls the first triple valve 61 and the second threeway The channel 1 of valve 62 and channel 2 are opened, and the second battery thermal management module 12 control third triple valve 63 and the 4th triple valve 64 Channel 1 is closed, and channel 2 is opened, so that colling end accesses the circulation loop of the first battery 41, while being controlled four fan device and being started work Make.If semiconductor control receives battery manager and sends the cooling power message information for increasing by the second battery 42, i.e., the The temperature of two batteries 42 then controls 3 forward direction of semiconductor heat exchange module and powers than high 3 DEG C of temperature or more of the first battery 41, and first The channel 1 that battery thermal management module 11 controls the first triple valve 61 and the second triple valve 62 is closed, channel 2 is opened, and controls the The channel 1 and channel 2 of three triple valves 63 and the 4th triple valve 64 are opened, so that colling end accesses being recycled back to for the second battery 42 Road, while controlling the start-up operation of third blower.If semiconductor heat management module does not receive above- mentioned information, semiconductor is cut off The power supply of heat exchange module.
Specifically, as shown in Figure 3 a-3b, it is heated when to battery, and the temperature of the first battery is less than the second battery At 3 DEG C of temperature or more, as shown in Figure 3a, the positive power supply of control semiconductor heat exchange module 3, controller controls 71 He of the first triple valve The channel 1 of second triple valve 72 is opened, and channel 2 is closed, four fan device work, and controls third triple valve 73 and the 4th triple valve 74 channel 1 is closed, channel 2 is closed, so that fever terminates the circulation loop into the first battery 41.And if the temperature of the second battery 3 DEG C of temperature or more less than the first battery are spent, as shown in Figure 3b, controls 3 reverse power supply of semiconductor heat exchange module, controller control The channel 1 of first triple valve 71 and the second triple valve 72 is closed, channel 2 is closed, and controls third triple valve 73 and the 4th threeway The channel 1 of valve 74 is opened, and channel 2 is closed, so that fever terminates the circulation loop into the second battery 41.
According to one embodiment of present invention, as shown in Fig. 4 a-4b, above-mentioned system can also include interior cooling branch Road, the cooling branch of car include the first interior cooling branch 301 and the second interior cooling branch 302, the first interior cooling branch 301 and second interior cooling branch 302 include: evaporator 31, wherein the evaporator point in the first interior cooling branch 301 It is not connected with First Heat Exchanger 21 and the first compressor 11, the evaporator 31 in the second interior cooling branch 302 is respectively with second Compressor 12 is connected with the first compressor 11.The cooling branch of car includes that the first interior cooling branch 301 and second is interior cooling Branch 302, controller are also used to when the temperature of battery reaches third preset temperature, reduce by the first interior cooling 301 He of branch The aperture of second interior cooling branch 302, while increasing the cooling branch 201 of the first battery and the cooling branch 202 of the second battery Aperture, and when the temperature of battery reaches third preset temperature, further judge whether temperature reaches air-conditioning setting in compartment Temperature, wherein if reaching air-conditioning set temperature, reduce the first interior cooling branch 301 and the second interior cooling branch 302 Aperture, while increasing the aperture of the cooling branch 201 of the first battery and the cooling branch 202 of the second battery.Wherein, the default temperature of third Degree temperature can be preset according to the actual situation, such as can be 45 DEG C.
Further, as shown in figure 5, the first interior cooling branch 301 corresponds to the first air outlet 100 and second in compartment Air outlet 200, the second interior cooling branch 302 correspond to third air outlet 300 and the 4th air outlet 400 in compartment, controller It is also used to: being greater than third air outlet 300 and the 4th air outlet 400 in the temperature of the first air outlet 100 and the second air outlet 200 When temperature, increase the aperture of the first interior cooling branch 301 and reduce the aperture of the second interior cooling branch 302, and the When the temperature of one air outlet 100 and the second air outlet 200 is less than the temperature of third air outlet 300 and the 4th air outlet 400, increase The aperture of second interior cooling branch 302 and the aperture for reducing the first interior cooling branch 301.
Specifically, as shown in Fig. 4 a-4b, each interior cooling branch includes: the evaporator 31 being serially connected, the second electronics Valve 32 and the second expansion valve 33, the cooling branch of car are connected with corresponding refrigeration branch.Wherein, the second electronic valve 32 is to control The opening and closing of corresponding car refrigeration branch, aperture of second expansion valve 33 to control corresponding interior cooling branch.Work as compartment When inside needing to freeze, controller controls the second electronic valve 32 and opens.
On-board air conditioner obtain it is electric after, if on-board air conditioner controller receive battery manager transmission battery refrigerating function starting Information, then battery refrigerating function starts, and on-board air conditioner sends battery refrigerating function starting information and gives battery thermal management controller.Vehicle It carries air-conditioner controller and receives the battery cooling power demand information (temperature regulatory demand power P 1) that battery manager is sent, and handle The information is transmitted to battery thermal management controller.In battery cooling procedure, on-board air conditioner controller receives battery thermal management control The water temperature information and the practical cooling power information of power battery pack (temperature adjusts actual power P2) that device processed is sent, and the information It is transmitted to battery manager.In battery cooling procedure, on-board air conditioner controller control cell cooling requirement power and battery are real Border cooling power information is sentenced if the temperature of battery adjusts the temperature regulatory demand power P 1 that actual power P2 is less than battery Whether the temperature in power-off pond reaches 45 DEG C (higher temperatures), if there is the temperature of battery reaches 45 DEG C, then on-board air conditioner controller The aperture of the second expansion valve 33 is reduced, the aperture of the first expansion valve 212 is increased, to reduce the cold medium flux of interior cooling branch, Increase the cold medium flux of the cooling branch of battery, to adjust the cooling and interior cooling refrigerating capacity distribution of battery.Also, on-board air conditioner The temperature that controller compares the cooling branch 202 of the cooling branch 201 in the first pond and the second pond in real time adjusts actual power, if some The temperature of cooling branch adjusts temperature regulatory demand power P 1 the sum of of the sum of the actual power P2 less than two batteries, then reduces the The aperture of two expansion valves 33 increases the aperture of the first expansion valve 212, if the temperature of two cooling duplexures adjusts practical function The sum of rate P2 is more than or equal to the sum of the temperature regulatory demand power P 1 of two batteries, then reduces the aperture of the first expansion valve 212, or Person keeps current expansion valve opening constant.
If the temperature of all batteries is no greater 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 33, increases the aperture of swollen first expansion valve 212, The cold medium flux of adjustment interior cooling branch and the cooling branch of battery.If the temperature in compartment does not reach air-conditioning setting temperature Degree, then it is preferential to meet interior refrigeration capacity requirement.In battery cooling procedure, if on-board air conditioner receives battery manager hair The battery sent is cooling to complete information, then forwards the cooling information of completing of battery to give 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 the temperature of any one battery is higher than 40 DEG C, the battery refrigerating function starting of corresponding battery, when the temperature of all batteries reaches 35 DEG C, then battery is cooling completes, and when the temperature of any one battery reaches 45 DEG C of higher temperatures, preferentially meets the cooling system of battery Refrigeration requirement.In addition, when the temperature of battery adjusts the sum of actual power and is less than the sum of the temperature regulatory demand power of battery, such as Fruit battery mean temperature is no more than 45 DEG C, then the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is Through abundance, and reach balance, then increases battery cooling power again.
In battery refrigerating function start-up course, if needing to open air-conditioning inside railway carriage, need to the ring in compartment Border temperature is monitored and controls, so that interior environment temperature everywhere is kept in balance, while battery is cooling to be wanted by being able to satisfy It asks.As shown in Fig. 2, when on-board air conditioner controller detects near zone temperature at the first air outlet 100 and the second air outlet 200 When than high 3 DEG C of near zone temperature or more at third air outlet 300 and the 4th air outlet 400, on-board air conditioner controller control the 212 aperture of the first expansion valve in the cooling branch 201 of one battery is reduced, the second expansion valve in the first interior cooling branch 301 33 apertures increase, so that the cooling power of the first interior cooling branch 301 increases, on-board air conditioner controller control second is interior cold But 33 aperture of the second expansion valve in branch 302 is reduced, and 212 aperture of the first expansion valve in the cooling branch 202 of the second battery increases Greatly, so that the cooling power of the second interior cooling branch 302 is reduced, the overall cooling power for keeping the cooling branch of battery is constant, Making compartment again simultaneously, air outlet near zone temperature is balanced everywhere.
When on-board air conditioner controller detects that near zone temperature ratio goes out at third air outlet 300 and the 4th air outlet 400 When high 3 DEG C of near zone temperature or more at the first air outlet 100 and the second air outlet 200, on-board air conditioner controller control second The aperture of the first expansion valve swollen 212 is reduced in the cooling branch 202 of battery, the second expansion valve 33 in the second interior cooling branch 302 Aperture increase so that the second interior cooling 302 cooling power of branch increases, also, on-board air conditioner controller controls the first vehicle The aperture of the second expansion valve 33 in interior cooling branch 301 is reduced, the first expansion valve 212 in the cooling branch 201 of the first battery Aperture increase so that the first interior cooling 301 cooling power of branch is reduced.When on-board air conditioner controller detects the first outlet air Mouthfuls 100 and the second near zone gas near zone temperature at air outlet 200 and third air outlet 300 and the 4th air outlet 400 The temperature difference it is different within 3 DEG C when, then keep the second expansion in the first interior cooling branch 301 and the second interior cooling branch 302 The aperture of valve 33 is constant.
In conclusion the humidity control system of on-vehicle battery according to an embodiment of the present invention, is obtained multiple by controller The temperature of battery, and judge whether the temperature difference between multiple batteries is greater than preset temperature threshold, and between multiple batteries When temperature difference is greater than preset temperature threshold, the temperature of multiple batteries is carried out balanced.As a result, the system can multiple batteries it Between temperature difference it is larger when, the temperature of multiple batteries is carried out, so as to improve battery by semiconductor heat exchange module Cycle life.The system can be when the temperature difference between multiple batteries be larger, by semiconductor heat exchange module to multiple as a result, The temperature of battery carries out, so as to improve the cycle life of battery.Also, it can also be adjusted according to the temperature of each battery Demand power and temperature adjust actual power and carry out temperature adjusting to battery, so as to too high or too low for temperature in on-vehicle battery When, battery temperature is adjusted according to the actual state of on-vehicle battery, so that the temperature of on-vehicle battery is maintained preset range, keeps away Exempt from that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
Fig. 6 is the flow chart of the temperature control method of the on-vehicle battery of an embodiment according to the present invention.Wherein, as schemed Shown in 1a-1b, on-vehicle battery humidity control system includes: semiconductor heat exchange module, has fever end and colling end to provide Heating power/cooling power；Multiple battery thermal management modules, the multiple battery thermal management module is selectable partly to be led with described Colling end or fever end in body heat exchange module carry out heat exchange to form the first heat exchange flow path；Multiple on-board air conditioner modules, often A on-board air conditioner module includes the cooling branch of battery and refrigeration branch, and each cooling branch of the battery includes heat exchanger, Multiple heat exchangers are connected with the multiple battery thermal management module respectively, the heat exchanger and the accordingly battery thermal Manage the selectable conducting of module and form second and exchange heat flow path, each refrigeration branch include compressor,；Controller, with institute State semiconductor heat exchange module, the multiple battery thermal management module and on-board air conditioner connection.As shown in fig. 6, temperature is adjusted Method the following steps are included:
S1 obtains the temperature of multiple batteries.
S2, judges whether the temperature difference between multiple batteries is greater than preset temperature threshold.Wherein, preset temperature threshold can be with It is preset according to the actual situation, for example, can be 8 DEG C.
S3 carries out the temperature of multiple batteries balanced if temperature difference is greater than preset temperature threshold.
Further, according to one embodiment of present invention, as shown in Fig. 1 a-1b, battery includes the first battery and second Battery, compressor include a first compressor and a second compressor, battery thermal management module include the first battery thermal management module and Second battery thermal management module, heat exchanger include First Heat Exchanger and the second heat exchanger, and the first of the first battery thermal management module End is connected with the first end at the end that generates heat in the first end of First Heat Exchanger and semiconductor heat exchange module respectively by the first triple valve, The second end of first battery thermal management module is exchanged heat with the second end of First Heat Exchanger and semiconductor respectively by the second triple valve The second end at fever end is connected in module, and the first end of the second battery thermal management module is changed with second respectively by third triple valve The first end of hot device is connected with the first end of colling end in semiconductor heat exchange module, and the second end of the second battery thermal management module is logical The 4th triple valve is crossed to be connected with the second end of colling end in the second end of the second heat exchanger and semiconductor heat exchange module respectively.Its In, equilibrium is carried out to the temperature of multiple batteries and is specifically included:
The power supply direction of semiconductor heat exchange module is controlled with by the fever in the low battery of temperature and semiconductor heat exchange module End is connected, and the high battery of temperature is connected with the colling end in semiconductor heat exchange module；According to the temperature between multiple batteries Difference and equalization requirement object time generate equalization requirement power；It is carried out according to temperature of the equalization requirement power control to multiple batteries It is balanced.Object time t can be preset according to the actual situation, for example, can be 1 hour.
Specifically, equalization requirement power i.e. the temperature difference between multiple batteries is adjusted in preset range, such as 3 DEG C with When interior, heating power/cooling power for needing.Semiconductor heat exchange module has fever end and colling end, works as power supply After reversal connection, generate heat end and colling end place-exchange.Fig. 1 a is the signal of semiconductor heat exchange module forward direction power supply temperature regulating system Figure, Fig. 1 b are the schematic diagram of semiconductor heat exchange module reverse power supply humidity control system.
When there are when the larger temperature difference, such as the temperature difference is more than 8 DEG C between two batteries, then, into battery temperature equilibrium work Operation mode.The heat exchange flow path of the higher battery of colling end cut-in temperature of semiconductor heat exchange module, fever end be linked into temperature compared with In the heat exchange flow path of low battery, to be cooled down to the higher battery of temperature, the lower battery of temperature is heated, so that It carries out heat between the higher battery of temperature and the lower battery of temperature to exchange, semiconductor heat exchange module improves changing between battery Hot rate.For example, the temperature that Fig. 1 a show the first battery is lower, the temperature of the second battery is higher；Fig. 1 b show the first electricity The temperature in pond is higher, and the temperature of the second battery is lower.Battery can be completed by changing power supply direction in semiconductor heat exchange module Temperature equalization.Battery coolant liquid flows directly into semiconductor heat exchange module, and the heat exchange efficiency of battery also can be improved.It is carried out to battery During heating/cooling, semiconductor heat exchange module also in real time according to equalization requirement power regulation heating power/cooling power, To complete the temperature equalization of battery within the object time.
Equalization requirement power P 3 includes demand for heat power P 3a and cooling requirement power P 3b, the matter between two batteries It, can be according to formula when being cooled down to battery when amount, internal resistance are identical with electric current: Generate equal cooling requirement power P 3b；When heating to battery, battery manager can be according to formula:Generate demand for heat power P 3a.Wherein, Δ T1For the temperature difference between two batteries Value, t are the object time, and C is the specific heat capacity of battery, and M is the quality of battery, and I is the electric current of battery, and R is the internal resistance of battery.
When the quality of two batteries, electric current and unequal internal resistance, lower with 1 temperature of battery, 2 temperature of battery is higher, electricity Pond 1 needs to heat, and for battery 2 needs cooling, (1) can calculate demand for heat power P 3a and and basis according to the following formula Formula (2) calculates cooling requirement power P 3b:
Wherein, Δ T1For the temperature gap between two batteries, t is the object time, and C is the specific heat capacity of battery, M1It is first The quality of battery, M2For the quality of the second battery, I1For the electric current of the first battery, I2For the quality of the second battery, R1For the first electricity Internal resistance, R2Temperature change for the internal resistance of the second battery, the first battery 41 isThe temperature of second battery 42 Variation are as follows:
Work as M1=M2=M, R1=R2=R, I1=I2When=I,
The electric current heat production of battery is completely counterbalanced by the control method of above-mentioned formula, so equalized in entire battery temperature Cheng Zhong, the higher battery temperature of temperature will not rise, but balanced demand power is higher.
Following introduction another kind regulative mode, i.e., only consider to reduce the temperature difference between battery as early as possible, not guarantee that Whether the temperature of battery can rise.It is not very high that such case, which is suitable for battery temperature, and the temperature difference between battery is larger When, it is not necessary that the temperature for limiting battery does not increase.Specific calculation formula is as follows:
Assuming that the first battery needs to cool down, and the second battery needs to heat when the temperature of the first battery is higher than electric second battery, Heating power caused by then the electric current between two batteries is different differs | I1 2R1-I2 2R2|, it (3) can count according to the following formula It calculates demand for heat power P 3a and calculates cooling requirement power P 3b with and according to formula (4):
That is P3a=P3b.
Wherein, Δ T1For the temperature gap between two batteries, t is the object time, and C is the specific heat capacity of battery, M1It is first The quality of battery, M2For the quality of the second battery, I1For the electric current of the first battery, I2For the quality of the second battery, R1For the first electricity Internal resistance, R2For the internal resistance of the second battery
After entering battery temperature balanced operation mode, control semiconductor heat exchange module according to demand for heat power P 3a and The larger value in cooling requirement power P 3b carries out temperature equalization adjusting.Such as P3a >=P3b, then it controls semiconductor heat exchange module and presses It is run according to demand for heat power P 3a；If P3a < P3b, semiconductor heat exchange module 2 is run according to cooling requirement power P 3b. Or semiconductor heat exchange module adjusts operating power, if P3a >=P3b, allows semiconductor heat exchange module according to being greater than The Power operation of demand for heat power P 3a；If P3a < P3b, semiconductor heat exchange module is according to greater than cooling requirement power P 3b Operation.Meanwhile in battery temperature balancing procedure, it is ensured that the heating power >=P3a at semiconductor heat exchange module fever end, colling end Cooling power >=P3b so that fever end and colling end be all satisfied temperature equalization power demand.
It is appreciated that in the present invention, when semiconductor heat exchange module power increases, the cooling function of colling end can be increased simultaneously The heating power of rate and fever end.
According to one embodiment of present invention, as shown in fig. 7, the temperature control method of on-vehicle battery can also include:
S10 obtains the temperature of the first battery and the second battery.
S20, the temperature for judging whether there is some battery are greater than the first temperature threshold.
S30 enters refrigerating mode if the temperature of any one battery is greater than the first temperature threshold.
S40, if the temperature of all batteries further determines whether that there are certain both less than or equal to the first preset threshold The temperature of a battery is less than second temperature threshold value.
S50 enters heating mode if the temperature of any one battery is less than second temperature threshold value.Wherein the first temperature Threshold value is greater than second temperature threshold value, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be 0 DEG C.
S60, if the temperature of all batteries is both greater than or equal to second temperature threshold value and less than or equal to the first temperature threshold Value, then judge whether the temperature difference between multiple batteries is greater than preset temperature threshold.
S70 enters temperature equalization mode if the temperature difference between multiple batteries is greater than preset temperature threshold.
Specifically, when the temperature of some battery is higher, such as higher than 40 DEG C, then the humidity control system of on-vehicle battery Into refrigerating mode, on-board air conditioner, battery thermal management module are started to work.It controls corresponding electronics to open, such as the first battery Temperature be higher than 40 DEG C, then the first electronic valve for controlling the cooling branch of the first battery is opened.When some battery temperature compared with When low, then the humidity control system of on-vehicle battery enters heating mode, battery thermal management module is started to work, and heater is opened It opens, is heated with the medium exchanged in hot flowpath.
Further, according to one embodiment of present invention, as shown in Fig. 1 a-1b, each battery thermal management module includes Pump, the first temperature sensor, second temperature sensor, flow sensor, media Containers and heating on heat exchange flow path are set Device；Wherein: pumping for making the media flow in heat exchange flow path；First temperature sensor is used to detect the medium for flowing into on-vehicle battery Inlet temperature；Second temperature sensor is used to detect the outlet temperature of the medium of outflow on-vehicle battery；Flow sensor is used for The flow velocity of medium in detection heat exchange flow path.Media Containers are for storing and providing medium to heat exchange flow path.Heater is to right Medium in cooling pipe is heated, and to provide heating power, the temperature of battery is adjusted when battery temperature is lower. Above-mentioned method can also include: the temperature adjusting actual power P2 and temperature regulatory demand power P 1 for obtaining battery, according to temperature Degree adjusts actual power P2 and the temperature of battery is adjusted in temperature regulatory demand power P 1.
Specifically, during cooling down to battery, 1 He of temperature regulatory demand power P of battery is also obtained in real time Temperature adjusts actual power P2, wherein the temperature of battery is adjusted within the object time and sets by temperature regulatory demand power P 1 Fixed target temperature, it is desirable to provide to the power of battery, battery temperature adjusts actual power P2 and currently carries out temperature to battery When adjusting, 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, and the object time can set when cooling down to battery It is 1 hour.Battery thermal management module can carry out CAN communication with on-board air conditioner, and on-board air conditioner can be according to the temperature tune of battery Section demand power P1 and temperature adjust actual power P2 and refrigeration work consumption are adjusted, so that battery 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.
The temperature regulatory demand power P 1 of battery how is obtained below with reference to the description of specifically embodiment and temperature is adjusted in fact Border power P 2.
According to one embodiment of present invention, the temperature regulatory demand power P 1 for obtaining battery specifically includes: obtaining each The first parameter when the opening temperature of battery is adjusted, and generate according to the first parameter the first temperature regulatory demand function of each battery Rate.Second parameter of each battery when temperature is adjusted is obtained, and generates the second temperature of each battery according to each second parameter Spend regulatory demand power.According to each second temperature regulatory demand of the first temperature regulatory demand power of each battery and battery Power generates the temperature regulatory demand power P 1 of each battery.
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.The electricity of each battery can be detected by current Hall sensor Stream, to obtain the average current I of battery whithin a period of time.
Wherein, when cooling down to battery, the temperature regulatory demand power of each battery is equal to Δ T1*C*M/t+I2*R； When heating to battery, the temperature regulatory demand power of each battery is equal to Δ T1*C*M/t-I2*R。
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 each battery temperature is adjusted, and obtains the flow velocity v that coolant liquid flows into flow path respectively.Point Second temperature difference Δ T is not generated according to the inlet temperature and outlet temperature of the flow path of battery2.According to the second temperature of each battery Poor Δ T2Actual power P2 is adjusted with the flow velocity v temperature for generating each battery.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross-sectional area, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is flow path Cross-sectional area.
Specifically, coolant liquid flows into the inside of battery from the entrance of flow path, flows out from the outlet of flow path, to realize battery Heat exchange between coolant liquid.By in the detection temperature of path inlet coolant liquid, the temperature of flowing path outlet coolant liquid, pipeline The flow rate information of coolant liquid, according to formula Δ T2* c*m, the temperature that can calculate each battery adjust actual power.According to electricity The first temperature difference Δ T between the initial temperature and target temperature in pond1, the cooling object time t of battery, battery specific heat capacity C, The mass M of battery, battery average current I, the internal resistance R of battery, according to formula Δ T1*C*M/t+I2* R or Δ T1*C*M/t-I2* R can calculate the temperature regulatory demand power of each battery.
It illustrates how to adjust actual power P2 according to the temperature of battery below with reference to specifically embodiment and temperature adjusts need Ask power P 1 that the temperature of battery is adjusted.
According to one embodiment of present invention, actual power P2 and temperature regulatory demand are adjusted according to the temperature of multiple batteries The temperature of multiple batteries is adjusted in power P 1, specifically includes: judge each battery temperature regulatory demand power P 1 whether Actual power P2 is adjusted greater than temperature；When for refrigerating mode, if the temperature regulatory demand power P 1 of some battery is greater than temperature Degree adjusts actual power P2, then increases the power of corresponding compressor.When for heating mode, if the temperature tune of some battery Save demand power P1 and be greater than temperature and adjust actual power P2, then increase in heating channel the heater of medium plus Thermal power.
That is, when being cooled down to battery, if the temperature of any one battery adjusts actual power P2 and is less than electricity Pond temperature regulatory demand power P 1, then can increase the refrigeration work consumption of associated compressors, while increasing the aperture of expansion valve, with Increase the aperture of the cooling branch of battery, so that increasing temperature adjusts actual power P2, so that battery can be complete within the object time It is adjusted at temperature.When being heated to battery, if the temperature of any one battery adjusts actual power P2 and is less than battery temperature tune Demand power P1 is saved, then the heating power of respective heater can be increased, so that increasing temperature adjusts actual power P2, so that Battery can complete temperature adjusting within the object time.
According to one embodiment of present invention, as shown in Fig. 1 a-1b, First Heat Exchanger and the cooling branch pair of the first battery It answers, the second heat exchanger is corresponding with the cooling branch of the second battery, and the cooling branch of the first battery is connected with the first compressor, the second electricity The cooling branch in pond is connected with the second compressor, the method also includes: when for refrigerating mode, and the temperature of the first battery is greater than the When the temperature of two batteries, increases the aperture of the cooling branch of the first battery and reduce the aperture of the cooling branch of the second battery；When being cold But mode, and when the temperature of the second battery is greater than the temperature of the first battery, increase the aperture of the cooling branch of the second battery and reduction The aperture of the cooling branch of first battery.
Specifically, if there is the temperature of a battery is higher than 40 DEG C, then battery thermal management system refrigerating function starts, battery Manager sends battery refrigerating function starting information to on-board air conditioner.Battery manager acquires current battery temperature and electric current ginseng Number, and according to the heat generation parameter of the average current estimation battery within a period of time, according to the current mean temperature of battery pack and electricity The temperature regulatory demand power P 1 of the average current estimation battery of difference and battery between the target temperature of pond, and battery Cooling requirement power is sent to on-board air conditioner controller.Battery manager sends the number for needing to carry out cooling battery simultaneously.
If battery manager detects the temperature of the first battery lower than 35 DEG C, it is cold that battery manager sends the first battery But information is completed.If battery manager detects the temperature of the second battery lower than 35 DEG C, battery manager sends the second electricity The cooling of pond completes information.If detecting 3 DEG C higher than the temperature of the second battery of the temperature of the first battery or more, battery management Device sends the cooling power message information for increasing by the first battery.If the temperature of the second battery is 3 DEG C higher than the temperature of the first battery More than, then battery manager sends the battery cooling power message information for increasing by the second battery.
If battery manager detects that the temperature of a battery is below 35 DEG C, battery is cooling to be completed, battery manager The cooling information of completing of battery is sent to on-board air conditioner.If the temperature of battery is still higher than after refrigerating function opens 1 hour 35 DEG C, then battery manager increases battery cooling power demand.
If there is the temperature of a battery is lower than 0 DEG C, then humidity control system heating function starts.Battery manager acquisition Current battery temperature and current parameters, and according to the heat generation parameter of the average current estimation battery within a period of time, according to electricity The temperature of the average current estimation power battery of difference and battery between pond actual temperature and battery target temperature is adjusted and is needed Power P 1 is sought, and temperature regulatory demand power P 1 is sent to battery thermal management controller, according to temperature regulatory demand power P1 controls heater and carries out heating work.
If battery manager detects that the temperature of the first battery is higher than 10 DEG C, battery manager sends the first battery and adds Heat completes information.If battery manager detects that the temperature of the second battery is higher than 10 DEG C, battery manager sends the second electricity Information is completed in pond heating.If detecting 3 DEG C lower than the temperature of the second battery of the temperature of the first battery or more, battery manager Send the battery heating power message information for increasing by the first battery.If detecting electricity of the temperature than the first battery of the second battery Low 3 DEG C of temperature or more, then battery manager sends the heating power message information for increasing by the second battery.
If battery manager detects that the temperature of a battery is above 10 DEG C, battery heating is completed, battery manager It sends battery heating and completes information to battery management controller.If still having the temperature of battery after heating function opens 2 hours Degree still is below 10 DEG C, then battery manager increases the heating power of heater.
If the temperature of battery is between 0 DEG C to 40 DEG C, and the temperature difference of the first battery and the second electricity is more than 8 DEG C, then Battery manager sends battery temperature equalization function and starts information.Battery manager acquire present battery between temperature difference and Target time for balance estimates battery pack required temperature equal power, battery temperature equal power demand information is sent, so as to partly lead Body heat exchange module carries out temperature equalization to battery according to battery temperature equal power demand information.It is opened in battery temperature equalization function During dynamic, if battery manager, which detects, meets battery heating function entry condition, it is equal that battery manager exits temperature Weigh function, into battery heating function.If battery manager, which detects, meets battery refrigerating function entry condition, cell tube Reason device exits temperature equalization function, into battery refrigerating function.If the first battery and the second battery mean temperature difference Less than 3 DEG C, then battery manager sends battery temperature equalization function and completes information.
If on-board air conditioner controller receives battery refrigerating function starting information, the starting of battery refrigerating function, vehicle-mounted sky It adjusts controller to send battery refrigerating function starting information and gives battery thermal management controller.On-board air conditioner controller receives battery management The temperature regulatory demand power P 1 for the battery that device is sent, and the information is transmitted to battery thermal management controller.It is cooling in battery In the process, on-board air conditioner controller controls the first electronic valve and the first expansion valve is opened.On-board air conditioner receives battery thermal management control The temperature of water temperature information and battery that device processed is sent adjusts actual power P2, and the information is transmitted to battery manager.In electricity In the cooling procedure of pond, the temperature regulatory demand power P 1 and temperature of on-board air conditioner controller control cell adjust actual power P2, If the temperature of the battery of some battery, which adjusts actual power P2, is less than temperature regulatory demand power P 1, on-board air conditioner controller Control increases the refrigeration work consumption of corresponding compressor.If detecting that the temperature of the first battery is 3 DEG C higher than the temperature of the second battery More than, then increase the aperture for increasing the first expansion valve of the cooling branch of the first battery and reduces the first of the cooling branch of the second battery The aperture of expansion valve, so that the cooling power of the first battery increases, the cooling power of the second battery is reduced, thus reduce battery it Between battery temperature difference.If 3 DEG C higher than the temperature of the first battery of the temperature of the second battery or more, it is cooling to increase the second battery The aperture second of first expansion valve of branch simultaneously reduces the aperture that big first battery cools down the first expansion valve of branch, so that first The cooling power of battery reduces, and the cooling power of the second battery increases, to reduce the battery temperature difference between battery.
In battery cooling procedure, if on-board air conditioner controller receives, the first battery is cooling to complete information, controls First electronic valve of the cooling branch of the first battery is closed.If on-board air conditioner controller receives the second of battery manager transmission Battery is cooling to complete information, then the first electronic valve for controlling the cooling branch of the second battery is closed.If on-board air conditioner controller connects The cooling completion information of battery for receiving battery manager transmission then forwards the cooling information of completing of battery to control to battery thermal management Device, battery is cooling to be completed.
Cooling power is provided for battery except on-board air conditioner can be passed through, can also be provided by semiconductor heat exchange module for battery cold But power.
According to one embodiment of present invention, as shown in Fig. 1 a-1b, when for refrigerating mode, and the temperature of the first battery is big When the temperature of the second battery, control semiconductor heat exchange module power supply direction and first to fourth triple valve the opening of channel/ Closing makes the colling end of semiconductor heat exchange module be connected with First Heat Exchanger, the fever end of semiconductor heat exchange module and the second heat exchanger It is connected；When for refrigerating mode, and when the temperature of the second battery is greater than the temperature of the first battery, control semiconductor heat exchange module The opening/closing colling end for making semiconductor heat exchange module and the second heat exchanger phase in power supply direction and the channel of first to fourth triple valve Even, the fever end of semiconductor heat exchange module is connected with First Heat Exchanger.
Specifically, in battery refrigerating function opening process, if the temperature of the first battery is higher than the temperature of the second battery by 3 DEG C or more, then semiconductor heat exchange module reverse power supply, and control the channel 1 of the first triple valve and the second triple valve and channel 2 is opened It opens, and the unlatching of channel 1 of control third triple valve and the 4th triple valve, channel 2 is opened, so that colling end accesses the first battery Circulation loop, fever terminate the circulation loop into the second battery.If the temperature of the second battery is higher than the temperature of the first battery by 3 DEG C or more, then semiconductor heat exchange module forward direction is powered, and controls the first triple valve and the unlatching of channel 1 of the second triple valve, channel 2 It opens and the channel 1 and channel 2 of control third triple valve and the 4th triple valve is opened, so that colling end accesses the second battery Circulation loop, fever terminate the circulation loop into the first battery.If there is the temperature of a battery is lower than 0 DEG C, then temperature is adjusted The starting of system heating function.When heating to battery, except heating power can be provided by heater, it can also pass through semiconductor Heat exchange module provides heating power.
It according to one embodiment of present invention, is heating mode, and the temperature of the first battery is less than the temperature of the second battery When, controlling the power supply direction of semiconductor heat exchange module and the opening/closing of the channel of first to fourth triple valve makes semiconductor heat exchange mould The fever end of block is connected with First Heat Exchanger, and the colling end of semiconductor heat exchange module is connected with the second heat exchanger.For heating mode, And in temperature of the temperature of the second battery less than the first battery, the power supply direction and first to the of semiconductor heat exchange module is controlled The opening/closing fever end for making semiconductor heat exchange module in the channel of four triple valves is connected with the second heat exchanger, semiconductor heat exchange module Colling end be connected with First Heat Exchanger.
Specifically, in battery heating function opening process, if the temperature of the first battery lower than the temperature of the second battery 3 DEG C or more, then semiconductor heat exchange module forward direction is powered, and the channel 1 of the first triple valve and the second triple valve is opened, channel 2 is closed, The channel 1 of third triple valve and the 4th triple valve is opened, channel 2 is closed, so that semiconductor heat exchanger fever is terminated into the first electricity The circulation loop in pond, semiconductor heat exchanger colling end access the circulation loop of the second battery.If the temperature of the second battery is than It opens in the channel 1 of low 3 DEG C of the temperature of one battery or more then semiconductor heat exchange module reverse power supply, the first triple valve and the second triple valve It opens, the closing of channel 2, the channel 1 of third triple valve and the 4th triple valve is opened, channel 2 is closed so that semiconductor heat exchanger generates heat The circulation loop into the second battery is terminated, semiconductor heat exchanger colling end accesses the circulation loop of the first battery.If semiconductor Thermal management module does not receive above- mentioned information, then cuts off semiconductor heat exchange module power supply.During heating, if the temperature of battery It spends regulatory demand power P 1 and is greater than temperature adjusting actual power P2, then increase the heating power of semiconductor heat exchange module.
It is appreciated that heater is closed in refrigerating function starting.In heating function starting, heater is opened, and first Regulating valve and the second regulating valve are closed.
As shown in Figure 3 a-3b, semiconductor heat exchange module can also include heat exchange blower fan (third blower and four fan device), change Air-heater corresponds to the fever end of semiconductor heat exchange module and colling end setting, the temperature control method of on-vehicle battery and can also wrap It includes:
When for refrigerating mode, and when the temperature of first battery is greater than the temperature of the second battery, control semiconductor heat exchange The power supply direction of module, and the channel of first to fourth triple valve of control is opening/closing, and controls and generate heat what end was correspondingly arranged Blower work, so that the colling end of semiconductor heat exchange module is connected with First Heat Exchanger；When for refrigerating mode, and described second The power supply direction of semiconductor heat exchange module when the temperature of battery is greater than the temperature of the first battery, and control first to fourth threeway The channel of valve it is opening/closing, and control works with the blower that is correspondingly arranged of fever end, so that the colling end of semiconductor heat exchange module It is connected with the second heat exchanger.
Specifically, as shown in Figure 3 a-3b, during battery is cooling, if the temperature of the first battery is than the second battery High 3 DEG C of temperature or more, then control 3 reverse power supply of semiconductor heat exchange module, controller controls the first triple valve and the second threeway The channel 1 of valve and channel 2 are opened, and the channel 1 of the second battery thermal management module 12 control third triple valve and the 4th triple valve It closes, channel 2 is opened, so that colling end accesses the circulation loop of the first battery, while being controlled four fan device and being started to work.If Semiconductor control receives battery manager and sends the cooling power message information for increasing by the second battery, i.e. the second battery 42 3 DEG C higher than the temperature of the first battery of temperature or more, then control the power supply of semiconductor heat exchange module forward direction, the first battery thermal management module It controls the first triple valve and the channel 1 of the second triple valve is closed, channel 2 is opened, and control third triple valve and the 4th triple valve 64 channel 1 and channel 2 are opened, so that colling end accesses the circulation loop of the second battery, while being controlled third blower and being started work Make.If semiconductor heat management module does not receive above- mentioned information, the power supply of semiconductor heat exchange module is cut off.
As shown in Figure 3 a-3b, when for heating mode, and when the temperature of the first battery is less than the temperature of second battery, Control semiconductor heat exchange module power supply direction, and control first to fourth triple valve channel it is opening/closing, and control with it is cold But the blower work that end end is correspondingly arranged, so that the fever end of semiconductor heat exchange module is connected with First Heat Exchanger；When for heating Mode, and in temperature of the temperature of the second battery less than the first battery, the power supply direction of semiconductor heat exchange module is controlled, and control The opening/closing of the channel of first to fourth triple valve is made, and control works with the blower that colling end end is correspondingly arranged, so as to partly lead The fever end of body heat exchange module is connected with the second heat exchanger.
Body, as shown in Figure 3 a-3b, in battery heating function opening process, if the temperature of the first battery is than second Low 3 DEG C of the temperature of battery or more, then the power supply of semiconductor heat exchange module forward direction is controlled, the first triple valve and the second triple valve are controlled Channel 1 is opened, and channel 2 is closed, and the channel 1 for controlling third triple valve and the 4th triple valve is closed, and channel 2 is closed, so that hair The circulation loop of the first battery is accessed in hot end, while controlling four fan device and starting to work.If the temperature of the second battery 42 is than Low 3 DEG C of the temperature of one battery or more, then control 3 reverse power supply of semiconductor heat exchange module, the first triple valve and the second triple valve Channel 1 is closed, channel 2 is closed, and the channel 1 for controlling third triple valve and the 4th triple valve is opened, and channel 2 is closed, so that hair The circulation loop of the second battery 42 is accessed in hot end, while controlling the start-up operation of third blower.
According to one embodiment of present invention, as shown in Fig. 4 a-4b, the humidity control system of on-vehicle battery further includes car Cooling branch, each interior cooling branch includes evaporator, multiple evaporators be connected in parallel respectively with multiple heat exchangers after again Connect respectively at stating compressor series connection more.The cooling branch of car includes the first interior cooling branch and the second interior cooling branch, on The method of stating can also include: to judge whether the temperature of battery reaches third preset temperature；If reaching third preset temperature, subtract The aperture of few first interior cooling branch and the second interior cooling branch, while increasing the cooling branch of the first battery and the second battery The aperture of cooling branch；If not up to third preset temperature, further judge whether temperature reaches air-conditioning setting in compartment Temperature；If reaching air-conditioning set temperature, the aperture of the first interior cooling branch and the second interior cooling branch is reduced, simultaneously Increase the aperture of the cooling branch of the first battery and the cooling branch of the second battery.Wherein, third preset temperature temperature can be according to reality Border situation is preset, such as can be 45 DEG C.
Specifically, further, as shown in figure 5, the first interior cooling branch corresponds to the first air outlet in compartment and the Two air outlets, the second interior cooling branch correspond to third air outlet and the 4th air outlet in compartment, and above-mentioned method can be with It include: to increase by the when the temperature of the first air outlet and the second air outlet is greater than the temperature of third air outlet and the 4th air outlet The aperture of one interior cooling branch and the aperture for reducing the second interior cooling branch；When the first air outlet and the second air outlet When temperature is less than the temperature of third air outlet and the 4th air outlet, the aperture for increasing by the second interior cooling branch simultaneously reduces the first vehicle The aperture of interior cooling branch.
Specifically, as shown in Fig. 4 a-4b, each interior cooling branch includes: the evaporator being serially connected, the second electronic valve With the second expansion valve, the cooling branch of car is connected with corresponding refrigeration branch.Wherein, the second electronic valve is to control corresponding vehicle The opening and closing of interior refrigeration branch, aperture of second expansion valve to control corresponding interior cooling branch.When needing to freeze in compartment When, the second electronic valve of control is opened.
In battery cooling procedure, if the temperature of battery adjusts the temperature regulatory demand function that actual power P2 is less than battery Rate P1, then judge whether the temperature of battery reaches 45 DEG C (higher temperatures), if there is the temperature of battery reaches 45 DEG C, then reduces The aperture of two expansion valves increases the aperture of the first expansion valve, and to reduce the cold medium flux of interior cooling branch, it is cooling to increase battery The cold medium flux of branch, to adjust the cooling and interior cooling refrigerating capacity distribution of battery.Also, the cooling branch in relatively the first pond in real time The temperature of the cooling branch in road and the second pond adjusts actual power, if the sum of temperature adjusting actual power of the two cooling branch is small In the sum of the temperature regulatory demand power of two batteries, then the aperture of the second expansion valve is reduced, increases the aperture of the first expansion valve, If the temperature of two cooling duplexures adjusts the temperature regulatory demand power that the sum of actual power is more than or equal to two batteries The sum of, then the aperture of the first expansion valve is reduced, or keep current expansion valve opening constant.
If the temperature of all batteries is no greater than 45 DEG C, judge whether the temperature in compartment reaches air-conditioning setting temperature Degree reduces the aperture of the second expansion valve if reached, and increases the aperture of swollen first expansion valve, adjust interior cooling branch and The cold medium flux of the cooling branch of battery.If the temperature in compartment does not reach air-conditioning set temperature, preferential satisfaction car Refrigeration capacity requirement.In battery cooling procedure, if on-board air conditioner receives the cooling completion letter of battery of battery manager transmission Breath then forwards the cooling information of completing of battery to give 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 the temperature of any one battery is higher than 40 DEG C, the starting of battery refrigerating function, when the temperature of all batteries reaches 35 DEG C, then battery It is cooling to complete, when the temperature of any one battery reaches 45 DEG C of higher temperatures, preferentially meet the cooling refrigeration capacity requirement of battery.Separately Outside, when the temperature of battery, which adjusts the sum of actual power, is less than the sum of the temperature regulatory demand power of battery, if battery is average Temperature is no more than 45 DEG C, then the refrigeration capacity requirement in still preferential compartment, if the cooling power in compartment is sufficient, and reaches To balance, then increase battery cooling power again.
In battery refrigerating function start-up course, if needing to open air-conditioning inside railway carriage, need to the ring in compartment Border temperature is monitored and controls, so that interior environment temperature everywhere is kept in balance, while battery is cooling to be wanted by being able to satisfy It asks.As shown in figure 5, when detecting that near zone temperature goes out than third air outlet and the 4th at the first air outlet and the second air outlet At air port at high 3 DEG C of near zone temperature or more, the aperture in the cooling branch of the first battery of control is reduced, the first interior cooling branch Aperture in road 301 increases, so that the cooling power of the first interior cooling branch increases, on-board air conditioner control second is interior cooling The aperture of branch is reduced, and the aperture of the cooling branch of the second battery increases, so that the cooling power of the second interior cooling branch is reduced, The overall cooling power for keeping the cooling branch of battery is constant, while making compartment air outlet near zone temperature equilibrium everywhere again.
Go out when detecting at third air outlet and the 4th air outlet near zone temperature than going out the first air outlet 100 and second At air port at high 3 DEG C of near zone temperature or more, the aperture of the cooling branch 2 of the second battery of control is reduced, the second interior cooling branch The aperture on road increases, so that the cooling power of the second interior cooling branch increases, also, on-board air conditioner control first is interior cooling The aperture of branch is reduced, and the aperture of the cooling branch of the first battery increases, so that the first interior cooling 301 cooling power of branch subtracts It is few.When detecting at the first air outlet and the second air outlet near near zone temperature and third air outlet and the 4th air outlet For regional temperature difference when within 3 DEG C, the aperture of the cooling branch of the first battery of control and the cooling branch of the second battery is identical, and first Aperture in the cooling branch of car and the second interior cooling branch is identical, to guarantee the first interior cooling branch and second in compartment The cooling power of the cooling branch of car is identical.
In conclusion the temperature control method of on-vehicle battery according to an embodiment of the present invention, obtains multiple electricity first The temperature in pond, then judges whether the temperature difference between multiple batteries is greater than preset temperature threshold, if it is greater than preset temperature threshold Value then carries out the temperature of multiple batteries balanced.This method can lead to when the temperature difference between multiple batteries is larger as a result, Semiconductor heat exchange module is crossed to carry out, so as to improve the cycle life of battery the temperature of multiple batteries.Also, it can be with According to the temperature regulatory demand power and temperature of each battery adjust actual power to battery carry out temperature adjusting, so as to When on-vehicle battery is too high or too low for temperature, battery temperature is adjusted according to the actual state of on-vehicle battery, makes on-vehicle battery Temperature maintain preset range, avoid that there is a situation where due to influence on-vehicle battery performance too high or too low for temperature.
In addition, the embodiment of the present invention also proposes a kind of non-transitorycomputer readable storage medium, it is stored thereon with meter Calculation machine program, the program realize 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 of multiple batteries, then first Judge whether the temperature difference between multiple batteries is greater than preset temperature threshold, if it is greater than preset temperature threshold, then to multiple electricity The temperature in pond carries out equilibrium, when larger so as to the temperature difference between multiple batteries, by semiconductor heat exchange module to more The temperature of a battery carries out, so as to improve the cycle life of battery.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (24)

1. a kind of humidity control system of on-vehicle battery characterized by comprising
Semiconductor heat exchange module has fever end and colling end to provide heating power/cooling power；
Multiple battery thermal management modules, the multiple battery thermal management module it is selectable with the semiconductor heat exchange module in Colling end or fever end carry out heat exchange to form the first heat exchange flow path；
Multiple on-board air conditioner modules, each on-board air conditioner module include the cooling branch of battery and refrigeration branch, each electricity The cooling branch in pond includes heat exchanger, and multiple heat exchangers are connected with the multiple battery thermal management module respectively, described to change Hot device forms the second heat exchange flow path with the selectable conducting of the accordingly battery thermal management module, and each refrigeration branch is equal Including compressor, multiple compressors are connected in series with the multiple heat exchanger respectively；
Colling end generates heat side controller, with the semiconductor heat exchange module, the multiple battery thermal management module and described vehicle-mounted Air-conditioning connection.
2. the humidity control system of on-vehicle battery as described in claim 1, which is characterized in that the battery includes the first battery With the second battery, the compressor includes a first compressor and a second compressor, and the battery thermal management module includes the first electricity Pond thermal management module and the second battery thermal management module, the heat exchanger include First Heat Exchanger and the second heat exchanger, and described The first end of one battery thermal management module by the first triple valve respectively with the first end of the First Heat Exchanger and described partly lead The first end at fever end is connected in body heat exchange module, and the second end of the first battery thermal management module passes through the second triple valve point It is not connected with the second end at the end that generates heat in the second end of the First Heat Exchanger and the semiconductor heat exchange module,
The first end of the second battery thermal management module passes through the third triple valve first end with second heat exchanger respectively It is connected with the first end of colling end in the semiconductor heat exchange module, the second end of the second battery thermal management module passes through the Four triple valves are connected with the second end of colling end in the second end of second heat exchanger and the semiconductor heat exchange module respectively.
3. the humidity control system of on-vehicle battery as claimed in claim 2, which is characterized in that the battery thermal management module packet Include the pump being arranged on the heat exchange flow path, the first temperature sensor, second temperature sensor, flow sensor；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.
4. the humidity control system of on-vehicle battery as claimed in claim 3, 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.
5. the humidity control system of on-vehicle battery as claimed in claim 3, 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.
6. the humidity control system of on-vehicle battery according to any one of claims 1 to 5, which is characterized in that the semiconductor Heat exchange module is also guaranteed replacement air-heater, and the heat exchange blower fan corresponds to fever end and the colling end setting of the semiconductor heat exchange module.
7. the humidity control system of on-vehicle battery as claimed in claim 6, which is characterized in that it further include interior cooling branch, The interior cooling branch includes the first interior cooling branch and the second interior cooling branch.
8. the humidity control system of on-vehicle battery as claimed in claim 7, which is characterized in that the car cools down branch and includes First interior cooling branch and the second interior cooling branch, the described first interior cooling branch correspond to the first air outlet in compartment With the second air outlet, the described second interior cooling branch corresponds to third air outlet and the 4th air outlet in compartment.
9. the humidity control system of on-vehicle battery as claimed in claim 8, which is characterized in that the described first interior cooling branch Include: evaporator with the described second interior cooling branch, wherein evaporator in the described first interior cooling branch respectively with The First Heat Exchanger is connected with first compressor, and the evaporator in the second interior cooling branch is respectively with described the Two compressors are connected with first compressor.
10. on-vehicle battery humidity control system as described in claim 1, which is characterized in that further include and the controller electricity The battery status detection module of connection, the battery status detection module are used to detect the electric current of the on-vehicle battery.
11. a kind of temperature control method of on-vehicle battery, which is characterized in that on-vehicle battery humidity control system includes and multiple electricity Multiple battery thermal management modules that the heat exchange flow path in pond is respectively connected with, multiple on-board air conditioner modules, each on-board air conditioner module are equal Including the cooling branch of battery and refrigeration branch, each cooling branch of the battery includes heat exchanger, multiple heat exchangers point It is not connected with the multiple battery thermal management module, each refrigeration branch includes compressor, multiple compressors point Not with the multiple heat exchanger be connected in series, it is being connected with the multiple battery thermal management module and with the multiple heat exchanger Semiconductor heat exchange module in parallel, wherein a part of battery thermal management module and institute in the multiple battery thermal management module The colling end stated in semiconductor heat exchange module is connected, another part battery thermal management mould in the multiple battery thermal management module Block is connected with the fever end in the semiconductor heat exchange module, the described method comprises the following steps:
Obtain the temperature of the multiple battery；
Judge whether the temperature difference between the multiple battery is greater than preset temperature threshold；
If the temperature difference is greater than the preset temperature threshold, the temperature of the multiple battery is carried out balanced.
12. the temperature control method of on-vehicle battery as claimed in claim 11, which is characterized in that the battery includes the first electricity Pond and the second battery, the compressor include a first compressor and a second compressor, and the battery thermal management module includes first Battery thermal management module and the second battery thermal management module, the heat exchanger include First Heat Exchanger and the second heat exchanger, described The first end of first battery thermal management module by the first triple valve respectively with the first end of the First Heat Exchanger and described half The first end at fever end is connected in conductor heat exchange module, and the second end of the first battery thermal management module passes through the second triple valve It is connected respectively with the second end at the end that generates heat in the second end of the First Heat Exchanger and the semiconductor heat exchange module,
The first end of the second battery thermal management module passes through the third triple valve first end with second heat exchanger respectively It is connected with the first end of colling end in the semiconductor heat exchange module, the second end of the second battery thermal management module passes through the Four triple valves are connected with the second end of colling end in the second end of second heat exchanger and the semiconductor heat exchange module respectively, Wherein, the temperature progress equilibrium to the multiple battery specifically includes:
The power supply direction of the semiconductor heat exchange module is controlled with by the low battery of temperature and the semiconductor heat exchange module In fever end be connected, and the high battery of temperature is connected with the colling end in the semiconductor heat exchange module.
13. the temperature control method of on-vehicle battery as claimed in claim 12, which is characterized in that further include:
According to the temperature difference and equalization requirement object time generation equalization requirement power between the multiple battery；
It is carried out according to temperature of the semiconductor heat exchange module described in the equalization requirement power control to the multiple battery balanced.
14. the temperature control method of on-vehicle battery as claimed in claim 12, which is characterized in that further include:
Obtain the temperature of first battery and second battery；
When the temperature of any one battery is greater than the first temperature threshold, into refrigerating mode；
When the temperature of any one battery is less than second temperature threshold value, into heating mode, wherein first temperature threshold is big In second temperature threshold value.
15. the temperature control method of on-vehicle battery as claimed in claim, which is characterized in that further include:
The temperature for obtaining the battery adjusts actual power；
Obtain the temperature regulatory demand power of the battery；
Actual power and the temperature regulatory demand power is adjusted according to the temperature of the battery to carry out the temperature of the battery It adjusts.
16. the temperature control method of on-vehicle battery as claimed in claim 15, which is characterized in that described according to the battery Temperature adjusts actual power and the temperature of the battery is adjusted in temperature regulatory demand power, specifically includes:
Judge whether the temperature regulatory demand power of each battery is greater than the temperature and adjusts actual power；
When for refrigerating mode, if the temperature regulatory demand power of some battery is greater than the temperature and adjusts practical function Rate then increases the power of the compressor.
When for heating mode, if the temperature regulatory demand power of some battery is greater than the temperature and adjusts practical function Rate then increases described for heating the heating power of the heater of medium in the flow path.
17. the temperature control method of on-vehicle battery as claimed in claim 12, which is characterized in that the First Heat Exchanger and The cooling branch of one battery is corresponding, and second heat exchanger is corresponding with the cooling branch of the second battery, and the cooling branch of first battery Road is connected with first compressor, and the cooling branch of second battery is connected with second compressor, and the method is also wrapped It includes:
When for refrigerating mode, and when the temperature of first battery is greater than the temperature of second battery, increase first electricity The aperture of the cooling branch in pond and the aperture for reducing the cooling branch of second battery；
When for refrigerating mode, and when the temperature of second battery is greater than the temperature of first battery, increase second electricity The aperture of the cooling branch in pond and the aperture for reducing the cooling branch of first battery.
18. the temperature control method of on-vehicle battery as claimed in claim 12, which is characterized in that further include:
When for refrigerating mode, and when the temperature of first battery is greater than the temperature of second battery, control semiconductor heat exchange Module power supply direction and first to fourth triple valve channel it is opening/closing, make the semiconductor heat exchange module Colling end is connected with the First Heat Exchanger, and the fever end of the semiconductor heat exchange module is connected with second heat exchanger；
When for refrigerating mode, and when the temperature of second battery is greater than the temperature of first battery, controls and described partly leads The opening/closing of the channel in the power supply direction and first to fourth triple valve of body heat exchange module makes the semiconductor heat exchange module Colling end is connected with second heat exchanger, and the fever end of the semiconductor heat exchange module is connected with the First Heat Exchanger.
19. the temperature control method of on-vehicle battery as claimed in claim 12, which is characterized in that further include:
When for heating mode, and when the temperature of first battery is less than the temperature of second battery, the semiconductor is controlled The opening/closing hair for making the semiconductor heat exchange module in the channel in the power supply direction and first to fourth triple valve of heat exchange module Hot end and the First Heat Exchanger be connected, the colling end of the semiconductor heat exchange module is connected with second heat exchanger；
When for heating mode, and when the temperature of second battery is less than the temperature of first battery, controls and described partly leads Body heat exchange module power supply direction and first to fourth triple valve channel it is opening/closing, make the semiconductor heat exchange module Fever end and second heat exchanger be connected, the colling end of the semiconductor heat exchange module and the First Heat Exchanger phase Even.
20. the temperature control method of on-vehicle battery as claimed in claim 18, which is characterized in that the semiconductor heat exchange module It further include heat exchange blower fan, the heat exchange blower fan corresponds to fever end and the colling end setting of the semiconductor heat exchange module, the side Method further include:
When for refrigerating mode, and when the temperature of first battery is greater than the temperature of second battery, the semiconductor is controlled The power supply direction of heat exchange module, and control first to fourth triple valve channel it is opening/closing, and control with the fever The blower work being correspondingly arranged is held, so that the colling end of the semiconductor heat exchange module is connected with the First Heat Exchanger；
When for refrigerating mode, and it is greater than semiconductor described in the temperature when system of first battery in the temperature of second battery and changes The power supply direction of thermal modules, and control first to fourth triple valve channel it is opening/closing, and control with the fever end The blower work being correspondingly arranged, so that the colling end of the semiconductor heat exchange module is connected with second heat exchanger.
21. the temperature control method of on-vehicle battery as claimed in claim 20, which is characterized in that when for heating mode, and institute State the first battery temperature be less than second battery temperature when, control the power supply direction of the semiconductor heat exchange module, and Control the opening/closing of the channel of first to fourth triple valve, and the fanman that control is correspondingly arranged with the colling end end Make, so that the fever end of the semiconductor heat exchange module is connected with the First Heat Exchanger；
When for heating mode, and when the temperature of second battery is less than the temperature of first battery, controls and described partly leads The power supply direction of body heat exchange module, and control first to fourth triple valve channel it is opening/closing, and control with it is described cold But the blower work that end end is correspondingly arranged, so that the fever end of the semiconductor heat exchange module is connected with second heat exchanger.
22. the temperature control method of on-vehicle battery as claimed in claim 11, which is characterized in that the temperature of the on-vehicle battery Regulating system further includes interior cooling branch, and the interior cooling branch includes that the first interior cooling branch and second are interior cooling Branch, the method also includes:
Judge whether the temperature of the battery reaches third preset temperature；
If reaching the third preset temperature, reduces by the described first interior cooling branch and the second car cools down opening for branch Degree, while increasing the aperture of the cooling branch of first battery and the cooling branch of the second battery；
If the not up to described third preset temperature, further judge whether temperature reaches air-conditioning set temperature in compartment；
If reaching the air-conditioning set temperature, reduces by the described first interior cooling branch and the second car cools down opening for branch Degree, while increasing the aperture of the cooling branch of first battery and the cooling branch of the second battery.
23. the temperature control method of on-vehicle battery as claimed in claim 22, which is characterized in that the described first interior cooling branch Road corresponds to the first air outlet and the second air outlet in compartment, and the described second interior cooling branch corresponds to the third in compartment Air outlet and the 4th air outlet, the method also includes:
When the temperature of first air outlet and the second air outlet is greater than the temperature of the third air outlet and the 4th air outlet, Increase the aperture of the described first interior cooling branch and reduces the aperture of the described second interior cooling branch；
When the temperature of first air outlet and the second air outlet is less than the temperature of the third air outlet and the 4th air outlet, Increase the aperture of the described second interior cooling branch and reduces the aperture of the described first interior cooling branch.
24. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the program The temperature control method of the on-vehicle battery as described in any one of claim 14-23 is realized when being executed by processor.
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