CN108598612A - A kind of battery thermal management method and system based on vehicle air conditioning - Google Patents
A kind of battery thermal management method and system based on vehicle air conditioning Download PDFInfo
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- CN108598612A CN108598612A CN201810291040.4A CN201810291040A CN108598612A CN 108598612 A CN108598612 A CN 108598612A CN 201810291040 A CN201810291040 A CN 201810291040A CN 108598612 A CN108598612 A CN 108598612A
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- battery
- battery core
- temperature
- vehicle air
- air conditioning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/66—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
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention provides a kind of battery thermal management method and system based on vehicle air conditioning, wherein battery thermal management method includes detecting the temperature of battery core in battery, to judge whether the battery core of battery needs cooling or heating according to the temperature of battery core；The operating status for detecting air-conditioning makes air-conditioning open refrigeration mode when battery core needs cooling, and air-conditioning is made to open heating mode when battery core needs heating；Water pump is opened, the transmission medium in battery thermal management system is made to flow through A/C evaporator；Transmission medium is cooled down or is heated with the battery core to battery into bottom in battery after absorbing cold or heat at A/C evaporator.The present invention solves the problems, such as the external temperature of battery can only be adjusted to poor to the control effect of battery temperature using independent air-cooled structure in the prior art.
Description
Technical field
The present invention relates to Vehicular battery heat management system fields, more particularly to a kind of battery thermal based on vehicle air conditioning
Manage method and system.
Background technology
Primary pollution source one of of the automobile as city, country clearly propose the demand for development of " green energy resource automobile ",
And power battery is the power producer of electric vehicle and the core key of electric vehicle, cost, performance and service life exist
It has been largely fixed the cost and reliability of vehicle.Also, power battery is very sensitive to the variation of temperature, suitable
Temperature range in work competence exertion optimum performance, and power battery is too high or too low for temperature, all can power battery property
Energy, service life and safety have a huge impact.
Currently, the battery management system of vehicle can generally be independently arranged an air-cooled structure, with by the air-cooled structure to electricity
The temperature in pond is adjusted, and still, independent air-cooled structure is generally arranged, and not only cost is relatively high, the space requirement to vehicle
It is relatively high, and the independent air-cooled structure generally can only regulating cell external temperature, to be imitated to the control of battery temperature
Fruit is poor.
Invention content
It is an object of the present invention to provide a kind of battery thermal management method and system based on vehicle air conditioning, to solve
Problem of the independent air-cooled structure to the control effect difference of battery temperature is used in the prior art.
A further object of the present invention is to reduce cost.
Particularly, the battery thermal management method based on vehicle air conditioning that the present invention provides a kind of comprising：
The temperature for detecting battery core in battery, judges whether the battery core of the battery needs to cool down according to the temperature of the battery core
Or heating；
The operating status for detecting the vehicle air conditioning makes the vehicle air conditioning open refrigeration when the battery core needs cooling
Pattern makes the vehicle air conditioning open heating mode when the battery core needs heating；
Water pump is opened, the transmission medium in battery thermal management system is made to flow through the A/C evaporator of the vehicle air conditioning；
The transmission medium enters bottom in the battery after absorbing the cold or heat of the A/C evaporator, to described
The battery core of battery is cooled down or is heated.
Further, in the unlatching water pump, the transmission medium in battery thermal management system is made to flow through the vehicle air conditioning
A/C evaporator after, and after the cold or heat that the transmission medium absorbs the A/C evaporator enter the battery
It is interior, before the battery is cooled down or heated, further include：
The heater being connect with the A/C evaporator is closed when the vehicle air conditioning is refrigerating state, in the vehicle
Air-conditioning is opened the heater when being heating state and is heated to the transmission medium flowed out from the A/C evaporator.
Further, further include,
When the battery core of battery need not cool down and need not heat up, the battery thermal management system out of service.
Further, the operating status of the detection air-conditioning, makes described when the temperature of the battery needs cooling
Vehicle air conditioning opens refrigeration mode, and the vehicle air conditioning is made to open heating mode, packet when the temperature of the battery needs heating
It includes：
If the vehicle air conditioning is not run, the refrigeration mode or heating mode of the vehicle air conditioning are opened；
If the vehicle air conditioning is currently running, continued to run with the pattern that the vehicle air conditioning is current.
Further, the temperature for detecting battery core in battery, the electricity of the battery is judged according to the temperature of the battery core
Whether core needs to cool down or heat up, including：
When the temperature of the battery core is less than preset temperature value, judge that the battery core of the battery needs to heat；
When the temperature of the battery core is higher than the preset temperature value, judge that the battery core of the battery needs to cool down；
When the temperature of the battery core is identical as the preset temperature value, judge the battery core of the battery need not heat or
Cooling.
The present invention also provides a kind of battery thermal management systems based on vehicle air conditioning, including：Detection unit, judging unit,
Controller, water pump, the pipeline for including transmission medium and A/C evaporator and the battery by the vehicle air conditioning, wherein
The detection unit is configured to detect the temperature of battery core in the battery；
The judging unit communicates to connect with the detection unit, is configured to be sentenced according to the temperature of battery core in the battery
Whether the battery core of the disconnected battery needs to cool down or heat up；
The controller, with the judging unit communicate to connect, be configured to detect the operating status of the air-conditioning, with
The battery core needs that the vehicle air conditioning is made to open refrigeration mode when cooling, makes the vehicle empty when the battery core needs heating
It tunes to open and opens heating mode；The controller is configured to open the water pump, so that the transmission medium is passed through the pipeline and flows through
The A/C evaporator and the battery, the transmission medium absorb enter after the cold or heat of the A/C evaporator it is described
Bottom in battery is cooled down or is heated with the battery core to the battery.
Further, the water pump is configured to pump the transmission medium；
The A/C evaporator, be configured to the transmission medium flow through its it is internal when cooling or heating transmission Jie
Matter, so that the transmission medium after cooling cools down to the battery core of the battery or makes the transmission medium after heating to the battery
Battery core heated.
Further, further include the heater being set between the A/C evaporator and the battery, the pipeline warp
The heater is crossed, the heater configuration is controllably closed at when the vehicle air conditioning is refrigerating state, in the vehicle
Air-conditioning is controllably opened when being heating state, to being heated by its internal described transmission medium.
Further, the controller is configured to control the heater pass when the vehicle air conditioning is refrigerating state
It closes, the heater is controlled when the air-conditioning is heating state and is opened.
Further, the bottom in the battery is provided with the heat exchanger being connected with the pipeline, is configured to make the biography
Described in defeated medium inflow inside it, the battery core of the battery is cooled down or be heated by its internal transmission medium.
Beneficial effects of the present invention are：
First, battery thermal management method of the invention first passes through the temperature of battery core in detection battery, then according to battery core
Whether temperature judgement battery core needs to cool down or heat up, and when battery core needs to cool down or heat up, detects the operating status of air-conditioning, to
Refrigeration mode is opened when battery core needs cooling or opens heating mode when battery core needs heating, is then opened
Water pump makes the transmission medium in battery thermal management system flow through A/C evaporator, to absorb the cold or heat at A/C evaporator
Enter bottom in battery after amount so that the battery core of battery is cooled down or be heated.In this way, the battery thermal management method does not need
The temperature of battery is adjusted by the way that independent air-cooled structure is arranged, and by the A/C evaporator in air-conditioning to battery thermal
The transmission of reason system is cooled down or is heated, final so that the transmission medium after cooling or heating is flowed in battery and realized to battery
Battery core cooled down or heated.Therefore, battery thermal management method of the invention can solve to use in the prior art independent
Air-cooled structure can only be adjusted the external temperature of battery to the problem poor to the control effect of battery temperature.
Secondly, the battery thermal management system or method can save vehicle manufacturing cost, independent air-cooled to solve setting
The problem that structure causes the cost of vehicle relatively high, but also the arrangement space of vehicle can be reduced, it is independent to solve setting
The problem that air-cooled structure causes vehicle space narrower.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Description of the drawings
Some specific embodiments that the invention will be described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is a kind of schematic knot of battery thermal management system based on vehicle air conditioning according to an embodiment of the invention
Structure block diagram；
Fig. 2 is a kind of the schematic of battery thermal management system based on vehicle air conditioning in accordance with another embodiment of the present invention
Structure diagram；
Fig. 3 is according to a kind of the schematic of battery thermal management system based on vehicle air conditioning of third embodiment of the invention
Structure diagram；
Fig. 4 is a kind of signal of battery thermal management system based on vehicle air conditioning accord to a specific embodiment of that present invention
Property structure chart；
Fig. 5 is a kind of schematic stream of battery thermal management method based on vehicle air conditioning according to an embodiment of the invention
Cheng Tu；
Fig. 6 is a kind of the schematic of battery thermal management method based on vehicle air conditioning in accordance with another embodiment of the present invention
Flow chart.
Specific implementation mode
Fig. 1 is a kind of schematic knot of battery thermal management system based on vehicle air conditioning according to an embodiment of the invention
Structure block diagram, a kind of battery thermal management system based on vehicle air conditioning, the battery thermal management system may include including transmission medium
Pipeline；Detection unit 1, the temperature for detecting battery core in battery 10；Judging unit 2 is communicated to connect with detection unit 1, is used for
Judge whether the battery core of battery needs cooling or heating according to the temperature of battery core in battery 10；Controller 3 is logical with judging unit 2
Letter connection can be configured to the operating status for detecting air-conditioning 4, and refrigeration mode is opened to control air-conditioning 4 according to 4 operating status of air-conditioning
Or heating mode, cooled down or heated up with the battery core to battery so that transmission medium can enter bottom in battery 10.
Wherein, battery 10 can be battery pack, i.e. transmission medium can enter the bottom in battery pack, to realize the battery core to battery pack
Cooling or heating.
Since the battery thermal management system of the present embodiment first passes through the temperature that detection unit 1 detects battery core in battery 10, so
Judge whether battery core needs cooling or heating according to the temperature of battery core by judging unit 2 afterwards, needs to cool down or heat up in battery core
When, controller 3 detect air-conditioning 4 operating status, to battery core need cooling when control air-conditioning 4 open refrigeration mode or
Person's control air-conditioning 4 when battery core needs heating opens heating mode, so as to produced in refrigeration mode by air-conditioning
Cold or in heating mode, generated heat is cooled down or is heated up to the battery core of battery 10.In this way, the present embodiment
Battery thermal management system is not necessarily to the refrigeration for being adjusted to the temperature of battery by the way that independent air-cooled structure is arranged, and passing through air-conditioning
Heat caused by cold or heating mode caused by pattern is cooled down or is added to the transmission medium of battery thermal management system
Heat, it is final so that the transmission medium after cooling or heating flow to the bottom in battery pack realize to the battery core of battery carry out cooling or
Heating.Therefore, the battery thermal management system of the present embodiment can solve to use independent air-cooled structure can only be right in the prior art
The external temperature of battery is adjusted to the problem poor to the control effect of battery temperature.
In another embodiment, as shown in Fig. 2, battery thermal management system may include detection unit 1, judging unit 2, control
Device 3 processed, water pump 5, the pipeline for including transmission medium and A/C evaporator 40 and battery 10 by vehicle air conditioning 4, wherein detection
Unit 1 can be configured to the temperature for detecting battery core in battery 10；Judging unit 2 can communicate to connect with detection unit, be configured to root
Judge whether the battery core of battery needs cooling or heating according to the temperature of battery core in battery 10；Controller 3 is communicated with judging unit 2
Connection can be configured to the operating status for detecting air-conditioning, to make vehicle air conditioning 4 open refrigeration mode when battery core needs cooling,
Vehicle air conditioning is set to open heating mode when battery core needs heating；Controller 3 may be additionally configured to open water pump 5, make transmission medium
A/C evaporator 40 and battery 10 are flowed through by pipeline, enters electricity after the cold or heat of transmission medium absorption A/C evaporator 40
Bottom in the group of pond is cooled down or is heated with the battery core to battery 10.In this way, the battery thermal management system of the present embodiment is not necessarily to
The temperature of battery is adjusted by the way that independent air-cooled structure is arranged, and cold caused by the refrigeration mode by air-conditioning or
Heat caused by heating mode is cooled down or is heated to the transmission medium of battery thermal management system, final to make cooling or add
The bottom that transmission medium after heat flows in battery pack, which is realized, to be cooled down or is heated to the battery core of battery.Therefore, the present embodiment
Battery thermal management system can solve carry out the external temperature of battery using independent air-cooled structure in the prior art
It adjusts to the problem poor to the control effect of battery temperature.
And in the prior art, segmentation scheme may use the scheme of air-conditioning Wind-cooling type that the temperature of battery is adjusted,
But the scheme of air-conditioning Wind-cooling type may only also be adjusted the external temperature of battery, and cannot to the internal temperature of battery into
Row control, to which the program is also poor to the control effect of battery temperature.
Also, the battery thermal management system of the present embodiment is simple in structure, can save the manufacturing cost of vehicle, to solve to set
The problem that independent air-cooled structure causes the cost of vehicle relatively high is set, but also the arrangement space of vehicle can be reduced, with solution
The problem that independent air-cooled structure causes vehicle space narrower is certainly set.
In the above-described embodiments, controller 3 can be connected by CAN bus with battery.
In a further embodiment, as shown in Fig. 2, water pump 5 is configured to pumping transmission medium, A/C evaporator 40 can match
Be set to transmission medium flow through its it is internal when reduce or heat transfer medium so that the transmission medium after cooling is to the battery core of battery
Cooled down or the transmission medium after heating is made to heat the battery core of battery.Wherein, water pump 5 can be with 3 communication link of controller
It connects, with while controller 3 controls air-conditioning 4 and opens refrigeration mode or heating mode, control water pump 5 is opened, with transmission of circulating
Medium makes it flow to the A/C evaporator 40 by being in refrigeration mode or heating mode, so as to transmission medium
It is cooled down or is heated, in this way, when the transmission medium after cooling or after heating is flow in battery 10, you can pass through the transmission medium
Battery core in battery 10 is cooled down or heated.
In above-mentioned further embodiment, as shown in figure 3, battery thermal management system may also include set on A/C evaporator
Heater 6 between 40 and battery 10, pipeline pass through heater.Heater 6 can be configured to controlled when air-conditioning 4 is refrigerating state
Ground is closed and to flow in battery 10 behind its inside from the transmission medium from A/C evaporator 40, or air-conditioning 4 be system
It is controllably opened when Warm status, so that transmission medium is by heating transmission medium inside it.In this embodiment, it controls
Device 3 can be communicated to connect with heater 6, be can be configured to the control heater 6 when air-conditioning 4 is refrigerating state and closed or in air-conditioning 4
It is opened to control heater 6 when heating state.It is of course also possible to it is separately provided a heating controller being connect with heater 6,
I.e. the heating controller being turned on and off dedicated for control heater 6.
In any of the above-described embodiment, as shown in figure 4, the bottom in battery 10 may be provided with heat exchanger, with heating
Device 6 is connected by pipeline, for making the transmission medium after heater flow into inside it, to pass through its internal transmission medium
The battery core of battery 10 is cooled down or heated.
In a specific embodiment, as shown in figure 4, battery thermal management system may include air-conditioning 4, and can in air-conditioning 4
Including A/C evaporator 40, one end is provided with expansion valve 41, further includes the compressor 8 being connect with 40 other end of A/C evaporator
And the condenser 9 between compressor 8, expansion valve 41, that is to say, that A/C evaporator 40, expansion valve 41, condenser and
Compression mechanism can be attached between them, so that transmission medium (can also claim at the first transmission circulation loop by pipeline
For circulation medium) it circulates in pipeline.Battery thermal management system has battery 10, and battery 10, which is built-in with battery core, (can also claim
For core), there are water pump 5 and heater 6 with what battery core was directly connected to, and water pump 5 connects one end of A/C evaporator 40, heater
6 are connected to the other end of A/C evaporator 40.Wherein the at one end of water pump 5 is equipped with an expansion tank.That is, battery 10 (or electricity
Core), water pump 5, A/C evaporator 40 and heater 6 constitute the second transmission circulation loop.Between them can by pipeline into
Row connection, so that transmission medium (alternatively referred to as circulation medium) circulates in pipeline.
It can be illustrated in combination with Fig. 1 to Fig. 4, when detection unit 1 detects that the battery core temperature of battery needs cooling,
The maximum temperature of battery core, minimum temperature can be sent to controller 3 by judging unit 2, and controller 3 starts to detect the operation shape of air-conditioning
State.If current air-conditioning is not run, controls air-conditioning 4 and open refrigeration mode (being referred to as cooling in summer pattern), simultaneously
Water pump 5 is opened, and closes heater 6 and (closes the function that heater simply turns off heater heating, be not off itself and air-conditioning
Pipeline between evaporator and battery core), the transmission medium in air-conditioning can be in the first transmission circulation loop according to the direction for being directed toward A
It circulates, at this point, since air-conditioning is in refrigeration mode, the temperature at A/C evaporator 40 is relatively low, when transmission medium is
When circulating, and flowing through at A/C evaporator 40 according to the direction for being directed toward B in two transmission circulation loops, transmission medium can absorb
Cold at A/C evaporator 40 is significantly reduced from the temperature of the transmission medium after the outflow of A/C evaporator 40,
When to flow through the core in battery by transmission medium after cooling, it can cool down to core.And in the effect of water pump 5
Under, the transmission medium in the second transmission circulation loop constantly can cyclically absorb the cold at A/C evaporator 40, so as to
Constantly the core in battery is cooled down, realizes the purpose for carrying out effective temperature-reducing to the core in battery.
When the battery core temperature that detection unit 1 measures battery needs heating, judging unit 2 can be by the highest temperature of battery core
Degree, minimum temperature are sent to controller 3, and controller 3 starts to detect the operating status of air-conditioning.If current air-conditioning is not run,
It then controls air-conditioning 4 and opens heating mode (being referred to as winter heating mode), while opening water pump 5, and heater 6
(i.e. the heating function of heater), transmission medium in air-conditioning can in the first transmission circulation loop according to be directed toward A phases
Anti- direction is circulated, at this point, since air-conditioning is in heating mode, the temperature at A/C evaporator 40 is relatively high, and transmission is situated between
Matter, by still circulating according to the direction for being directed toward B, when flowing through at A/C evaporator 40, is transmitted in the second transmission circulation loop
Medium can absorb the heat at A/C evaporator 40, i.e., risen from the temperature of the transmission medium after the outflow of A/C evaporator 40
Temperature, and transmission medium is further heated by heater 6, in this way, flowing through battery by the transmission medium after heating twice
When interior core, core can be heated.And under the action of water pump 5, the transmission medium in the second transmission circulation loop
The heat at A/C evaporator 40 constantly can be cyclically absorbed, and is heated under the action of heater 6, so as to continuous
Ground heats the core in battery, realizes the purpose effectively to be heated up to the core in battery.Under normal circumstances, it heats
Device 6 can not have to open, and under the action of water pump, the transmission medium in the second transmission circulation loop can also obtain effectively adding
Heat.If opening heater 6, the transmission medium in the second transmission circulation loop can be quickly heated, to improve to electricity
The heating speed of pond inner core-body.In general, in the case of extreme area or extreme weather, heater 6 can be opened simultaneously to battery
Interior core is heated.Alternatively, in the case where water pump 5 can not be opened, transmission medium can be added by heater 6
Heat, to achieve the purpose that heat battery inner core body.
In any of the above-described embodiment, heater 6 can be PCT heaters.
The present embodiment also provides a kind of battery thermal management method based on vehicle air conditioning, as shown in Figure 5.The battery thermal management
Method may include：
S100. the temperature for detecting battery core in battery, to judge whether the battery core of battery needs to cool down according to the temperature of battery core
Or heating；
S200. the operating status for detecting vehicle air conditioning, makes vehicle air conditioning open refrigeration mode when battery core needs cooling,
Battery core needs that vehicle air conditioning unlatching heating mode is made (when the battery core of battery needs to cool down or heat up, to detect air-conditioning when heating
Operating status, and so that air-conditioning is opened refrigeration mode when battery core needs cooling, or so that air-conditioning is opened system when battery core needs heating
Heat pattern)；
S300. water pump is opened, the transmission medium in battery thermal management system is made to flow through A/C evaporator；
S400. transmission medium absorb A/C evaporator at cold or heat after enter battery in the battery core to battery into
Row cooling or heating.
Since the battery thermal management method of the present embodiment first passes through the temperature of battery core in detection battery, then according to battery core
Whether temperature judgement battery core needs to cool down or heat up, and when battery core needs to cool down or heat up, detects the operating status of vehicle air conditioning,
To open refrigeration mode when battery core needs cooling or need the when of heating up to open heating mode in battery core, then
Water pump is opened, so that the transmission medium in battery thermal management system is flowed through A/C evaporator, to absorb the cold at A/C evaporator
Or enter after heat in battery to which the battery core of battery is cooled down or be heated.In this way, the battery thermal management method does not need
The temperature of battery is adjusted by the way that independent air-cooled structure is arranged, and by the A/C evaporator in air-conditioning to battery thermal
The transmission of reason system is cooled down or is heated, final so that the transmission medium after cooling or heating flows to the reality of the bottom in battery pack
Now the battery core of battery is cooled down or heated.Therefore, battery thermal management method of the invention can solve to adopt in the prior art
The external temperature of battery can only be adjusted to poor to the control effect of battery temperature with independent air-cooled structure
Problem.
In the above-described embodiments, as shown in fig. 6, making the transmission medium in battery thermal management system flow through sky opening water pump
After adjusting evaporator, and enter in battery to be cooled down to battery or be added after absorbing the cold or heat at A/C evaporator
Before heat, it may also include：
S30. the heater that connect with A/C evaporator is closed when vehicle air conditioning is refrigerating state, or in air-conditioning to heat
Heater is to heat the transmission medium flowed out from A/C evaporator when state.Wherein.It refers to closing to close heater
The heating function of heater is closed, and not closes the pipeline between heater and A/C evaporator and battery core.
In a further embodiment, the temperature for detecting battery core in battery, to judge the electricity of battery according to the temperature of battery core
Whether core needs to cool down or heat up, and is specifically as follows：
When the temperature of battery core is less than preset temperature value, judge that the battery core of battery needs to heat；Or
When the temperature of battery core is higher than preset temperature value, judge that the battery core of battery needs to cool down；Or
When the temperature of battery core is identical as preset temperature value, judge that the battery core of battery need not heat or cool down.Wherein, in advance
If temperature value can be 10-20 degree.
Or the temperature of battery core in battery is detected, to judge whether the battery core of battery needs to drop according to the temperature of battery core
Temperature or heating, are specifically as follows：
When the temperature of battery core is in the first preset temperature section a, judge that the battery core of battery needs to heat；Or
When the temperature of battery core is in the second preset temperature section b, judge that the battery core of battery needs to cool down；Or
When the temperature of battery core is in third preset temperature section c, judge that the battery core of battery need not heat or cool down.
Wherein, the first preset temperature section a can be：(such as a can be 5 DEG C or 6 DEG C or 7 DEG C or 8 DEG C or 9 DEG C for a≤10 DEG C
Deng)；Second preset temperature section b can be：B >=20 DEG C (such as b can be 21 DEG C or 22 DEG C or 23 DEG C or 24 DEG C or 25 DEG C)；
Third preset temperature section c can be：25 DEG C of 10 DEG C of ＞ c ＞ (b can be 5 DEG C or 6 DEG C or 7 DEG C or 8 DEG C or 9 DEG C or 21 DEG C or
22 DEG C or 23 DEG C or 24 DEG C or 25 DEG C etc.).In this embodiment, the range of preset temperature value can be set according to the type of battery
It is fixed.Such as, battery can be divided into common batteries and quick charging battery.When battery is common batteries, the first preset temperature section a≤10
℃；Second preset temperature section b >=25 DEG C；25 DEG C of third preset temperature section, 10 DEG C of ＞ c ＞.And when battery is quick charging battery
When, the first preset temperature section a≤10 DEG C；Second preset temperature section b >=20 DEG C；20 DEG C of third preset temperature section ＞ c ＞
10℃。
Further, in step s 200, the operating status of air-conditioning is detected, and makes sky when the temperature of battery needs cooling
It tunes to open and opens refrigeration mode or so that air-conditioning is opened heating mode when the temperature of battery needs heating, specifically may include：
If vehicle air conditioning is not run, the refrigeration mode or heating mode of air-conditioning are opened；
If vehicle air conditioning is run, continued to run with the pattern that vehicle air conditioning is current.
Specifically, when in compartment without refrigeration or heating needs, air-conditioning is not run.If battery battery core have cooling or
Person's demand for heat then opens the refrigeration mode or heating mode of air-conditioning, synchronous to open battery thermal management system.Air-conditioning is not to compartment
Inside freezed either to be heated and is only cooled down to battery battery core or heated.
When there is refrigeration demand in compartment, operation of air conditioner refrigeration mode.Usually, temperature extraneous at this time is more than 16 DEG C,
Power battery can cause the temperature of its internal battery core to be centainly not less than ambient temperature (16 DEG C) because of operational heat reason, and battery is certain
There is no demand for heat.With the continuous raising of battery work battery core temperature, when battery battery core has cooling, battery thermal management system
It opens, vehicle air conditioning is continued to run with according to current refrigeration mode at this time, is cooled down to battery battery core.
When there is heating needs in compartment, operation of air conditioner heating mode.Usually, there are following three kinds of situations, the first feelings
Condition：When battery battery core is without heating and cooling, battery thermal management system is closed.The second situation：Battery battery core has
When demand for heat, battery thermal management system is opened after receiving battery demand for heat, at this point, vehicle air conditioning is according to the current system of meeting
Heat pattern continues to run with, and is heated to battery battery core.If outdoor temperature is extremely low, can by PTC assist heating to battery into
Row heating.The third situation：Battery battery core have cooling demand (ambient temperature is relatively low at this time, inside power battery battery core temperature compared with
It is low, there is no cooling demand substantially), conflict (situation is few) with heating needs in compartment, then with battery battery core demand, (i.e. cooling needs
Ask) it is preferential, air-conditioning switchs to refrigeration mode, not to freezing in compartment, and only cools down to battery battery core.
In any of the above-described embodiment, battery thermal management method may also include：Need not cool down in the battery core of battery and
It is out of service when need not heat up.It is illustrated in conjunction with Fig. 1, detection unit 1 can be construed to and detect the temperature of battery core pre-
If in the range of temperature value, at this point, illustrating that battery works in more suitable temperature range, working in the temperature range
Battery can play its best performance, and not interfere with its service life, will not cause security risk, it is therefore not necessary to battery
Temperature is adjusted.
The battery thermal management system of any of the above-described embodiment or method are without being arranged independent air-cooled structure with reality as a result,
It now to the adjusting of battery temperature, can not only solve in the prior art the outside of battery may only be adjusted, and can not adjust
The internal temperature of batteries, thus the problem of battery temperature can not be efficiently controlled, and the manufacturing cost of vehicle can be saved.
In addition, the battery thermal management system of any of the above-described embodiment is simple in structure, in this way, can reduce the arrangement of vehicle
Space, to solve the problems, such as that the independent air-cooled structure of setting causes vehicle space narrower.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of battery thermal management method based on vehicle air conditioning comprising：
The temperature for detecting battery core in battery judges whether the battery core of the battery needs cooling or liter according to the temperature of the battery core
Temperature；
The operating status for detecting the vehicle air conditioning makes the vehicle air conditioning open refrigeration mould when the battery core needs cooling
Formula makes the vehicle air conditioning open heating mode when the battery core needs heating；
Water pump is opened, the transmission medium in battery thermal management system is made to flow through the A/C evaporator of the vehicle air conditioning；
The transmission medium enters bottom in the battery after absorbing the cold or heat of the A/C evaporator, to the battery
Battery core cooled down or heated.
2. battery thermal management method according to claim 1, wherein in the unlatching water pump, make battery thermal management system
In transmission medium flow through the A/C evaporator of the vehicle air conditioning after, and absorb the air-conditioning evaporation in the transmission medium
Enter in the battery after the cold or heat of device, before the battery is cooled down or heated, further includes：
The heater being connect with the A/C evaporator is closed when the vehicle air conditioning is refrigerating state, in the vehicle air conditioning
The transmission medium flowed out from the A/C evaporator is heated to open the heater when heating state.
3. battery thermal management method according to claim 2, wherein further include,
When the battery core of battery need not cool down and need not heat up, the battery thermal management system out of service.
4. battery thermal management method according to claim 3, wherein the operating status of the detection air-conditioning, in institute
The temperature for stating battery needs that the vehicle air conditioning is made to open refrigeration mode when cooling, makes when the temperature of the battery needs heating
The vehicle air conditioning opens heating mode, including：
If the vehicle air conditioning is not run, the refrigeration mode or heating mode of the vehicle air conditioning are opened；
If the vehicle air conditioning is currently running, continued to run with the pattern that the vehicle air conditioning is current.
5. according to claim 1-4 any one of them control methods, wherein the temperature of battery core in the detection battery, according to
The temperature of the battery core judges whether the battery core of the battery needs to cool down or heat up, including：
When the temperature of the battery core is less than preset temperature value, judge that the battery core of the battery needs to heat；
When the temperature of the battery core is higher than the preset temperature value, judge that the battery core of the battery needs to cool down；
When the temperature of the battery core is identical as the preset temperature value, judge that the battery core of the battery need not be heated or be dropped
Temperature.
6. a kind of battery thermal management system based on vehicle air conditioning, including：It is detection unit, judging unit, controller, water pump, interior
The pipeline of A/C evaporator and the battery containing transmission medium and by the vehicle air conditioning, wherein
The detection unit is configured to detect the temperature of battery core in the battery；
The judging unit communicates to connect with the detection unit, is configured to judge institute according to the temperature of battery core in the battery
Whether the battery core for stating battery needs to cool down or heat up；
The controller communicates to connect with the judging unit, is configured to detect the operating status of the air-conditioning, with described
Battery core needs that the vehicle air conditioning is made to open refrigeration mode when cooling, so that the vehicle air conditioning is opened when the battery core needs heating
Open heating mode；The controller is configured to open the water pump, make the transmission medium pass through the pipeline flow through it is described
A/C evaporator and the battery, the transmission medium enter the battery after absorbing the cold or heat of the A/C evaporator
Interior bottom is cooled down or is heated with the battery core to the battery.
7. battery thermal management system according to claim 6, wherein
The water pump is configured to pump the transmission medium；
The A/C evaporator, be configured to the transmission medium flow through its it is internal when the cooling or heating transmission medium, with
The electricity for making the transmission medium after cooling be cooled down to the battery core of the battery or make the transmission medium after heating to the battery
Core is heated.
8. control system according to claim 7, wherein further include be set to the A/C evaporator and the battery it
Between heater, the pipeline pass through the heater, the heater configuration at the vehicle air conditioning be refrigerating state when
Controllably close, controllably opened when the vehicle air conditioning is heating state, to by its internal described transmission medium into
Row heating.
9. battery thermal management system according to claim 8, wherein the controller is configured in the vehicle air conditioning
It is closed to control the heater when refrigerating state, the heater is controlled when the air-conditioning is heating state and is opened.
10. battery thermal management system according to claim 8 or claim 9, wherein the bottom in the battery be provided with it is described
The connected heat exchanger of pipeline is configured to make described in the transmission medium inflow inside it, to pass through its internal transmission medium pair
The battery core of the battery is cooled down or is heated.
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| CN201810291040.4A CN108598612A (en) | 2018-04-03 | 2018-04-03 | A kind of battery thermal management method and system based on vehicle air conditioning |
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| CN201810291040.4A CN108598612A (en) | 2018-04-03 | 2018-04-03 | A kind of battery thermal management method and system based on vehicle air conditioning |
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