CN106229581A - A kind of battery thermal management system and method - Google Patents
A kind of battery thermal management system and method Download PDFInfo
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- CN106229581A CN106229581A CN201610798900.4A CN201610798900A CN106229581A CN 106229581 A CN106229581 A CN 106229581A CN 201610798900 A CN201610798900 A CN 201610798900A CN 106229581 A CN106229581 A CN 106229581A
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- Prior art keywords
- heat exchange
- exchange module
- threshold value
- temperature
- battery cell
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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
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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
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
Abstract
The invention provides a kind of battery thermal management system and method, this system includes: the first heat exchange module, the second heat exchange module and diversion air duct；Described diversion air duct includes: top layer diversion air duct, bottom diversion air duct, the first connection air channel, the second connection air channel, the 3rd connection air channel and the 4th connect air channel；Air channel is connected by first, second connects air channel is connected with top layer diversion air duct and bottom diversion air duct respectively by the first heat exchange module, and by the 3rd connection air channel, 4th connects air channel is connected with top layer diversion air duct and bottom diversion air duct respectively by the second heat exchange module, so that the first heat exchange module, described second heat exchange module and described diversion air duct constitute the entirety sealed, the present invention ensure that the degree of protection of battery system, and battery system is carried out efficient wind-cooling heat dissipating, and then effectively extend the service life of battery, improve the work efficiency of battery.
Description
Technical field
The present invention relates to battery thermal management technical field, particularly relate to a kind of battery thermal management system and method.
Background technology
The accumulation of heat is to cause electrokinetic cell system to break down and the most important reason of security incident.Battery thermal management
System, as a part indispensable in battery management system, is more the key link in modern electric automobile, is also
Big degree plays battery performance, promotes the important means of car load usefulness.
Distinguishing with heat-conducting medium, existing battery thermal management system can simply be divided into water-cooling heat radiating system and wind-cooling heat dissipating system
System.And for moulding shell lithium iron phosphate dynamic battery, relatively low owing to moulding the thermal conductivity of shell (PP+GF30), simple water-cooled or
Air-cooled being all difficult to makes battery reach preferable radiating effect.For existing air cooling system, mostly communicate with the external world, so certainly will make
The degree of protection becoming battery system declines, it is impossible to meets vehicle working condition and travels, there is potential safety hazard.
Summary of the invention
For the defect of prior art, the present invention provides a kind of battery thermal management system and method, it is possible to solve existing skill
In art, existing battery thermal management air cooling system can reduce the degree of protection of system in heat radiation simultaneously, electric battery with plastic case is generally limited to
The low heat conductivity of battery case pp material is unable to reach the problems such as the highest radiating effect.
First aspect, the invention provides a kind of battery thermal management system, including: the first heat exchange module, the second heat are handed over
Die change block and diversion air duct；Described first heat exchange module and described second heat exchange module are arranged at the both sides of Battery case；
Described diversion air duct includes: top layer diversion air duct, bottom diversion air duct, first connect air channel, second connect air channel,
3rd connects air channel and the 4th connects air channel；
Described first heat exchange module is connected with the first side of described top layer diversion air duct by the first connection air channel, described
First heat exchange module is connected with the first side of described bottom diversion air duct by the second connection air channel, described second heat exchange mould
Block is connected with the second side of described top layer diversion air duct by the 3rd connection air channel, and described second heat exchange module is by the 4th even
The second side with described bottom diversion air duct of giving a dinner for a visitor from afar is connected；
Described first heat exchange module, described second heat exchange module and described diversion air duct constitute the whole of a sealing
Body.
Preferably, described first heat exchange module is refrigeration module or heating module, and described second heat exchange module is for adding
Thermal modules or refrigeration module.
Preferably, described refrigeration module includes: diversing flow system, vaporizer and temperature sensor.
Preferably, described heating module includes: diversing flow system, heater and temperature sensor.
Second aspect, the invention provides a kind of battery thermal management side based on any one battery thermal management system above-mentioned
Method, described method includes:
Battery cell temperature in Real-time Collection Battery case, and obtain the temperature difference between battery cell；
According to the temperature difference between described battery cell temperature and described battery cell, control the first heat exchange module or
Two heat exchange modules are opened diversing flow system and carry out freezing or heating, so that temperature equalization.
Preferably, described according to the temperature difference between described battery cell temperature and described battery cell, control the first heat
Switching Module or the second heat exchange module are opened diversing flow system and carry out freezing or heating, including:
Judge that whether the temperature difference between described battery cell is more than the first predetermined threshold value；
If the temperature difference between described battery cell is more than the first predetermined threshold value, open the first heat exchange module and the second heat
The diversing flow system of Switching Module；
Judge that whether the temperature difference between described battery cell is less than the second predetermined threshold value；
If the temperature difference between described battery cell is less than the second predetermined threshold value, close described first heat exchange module or institute
State the diversing flow system of the second heat exchange module；
Wherein, the first predetermined threshold value is more than the second predetermined threshold value.
Preferably, described according to the temperature difference between described battery cell temperature and described battery cell, control the first heat
Switching Module or the second heat exchange module are opened diversing flow system and carry out freezing or heating, including:
Judge that whether the highest battery cell temperature is more than the 3rd predetermined threshold value；
If described battery cell temperature is more than the 3rd predetermined threshold value, open the diversing flow system of the first heat exchange module, simultaneously
The evaporator operation controlling described first heat exchange module is freezed；
Judge that whether the temperature difference between battery cell is more than the 4th predetermined threshold value；
If the temperature difference between battery cell is more than the 4th predetermined threshold value, then control the evaporation of described first heat exchange module
Device stops refrigeration, and judges whether the temperature difference between described battery cell is less than the 5th predetermined threshold value, if the most again controlling
The evaporator operation of described first heat exchange module is freezed；
If the temperature difference between battery cell is less than or equal to the 4th predetermined threshold value, then whether judge the highest battery cell temperature
Less than the 6th predetermined threshold value；
If the highest described battery cell temperature is less than the 6th predetermined threshold value, then the water conservancy diversion closing described first heat exchanger sets
Standby；
Wherein, the 3rd predetermined threshold value is more than the 6th predetermined threshold value, and the 4th predetermined threshold value is more than the 5th predetermined threshold value.
Preferably, described method also includes:
When receiving automobile starting request or the charge request of user's input, it is judged that whether battery temperature is more than start-up temperature
Threshold value or charging temperature threshold value；
If described battery temperature is less than or equal to start-up temperature threshold value or charging temperature threshold value, then open the second heat exchange module
Diversing flow system, control simultaneously described second heat exchange module heater work heat.
As shown from the above technical solution, the present invention provides a kind of battery thermal management system and method, by Battery case
Both sides the first heat exchange module and the second heat exchange module are set, and diversion air duct is set inside Battery case, specifically leads to
Cross the first connection air channel, the second connection air channel to be connected with top layer diversion air duct and bottom diversion air duct respectively by the first heat exchange module
Connect, and by the 3rd connection air channel, the 4th connect air channel by the second heat exchange module respectively with top layer diversion air duct and bottom
Diversion air duct connects, so that the first heat exchange module, described second heat exchange module and described diversion air duct constitute one
The entirety sealed, thus ensure that the degree of protection of car load IP67, and battery system is carried out efficient wind-cooling heat dissipating, Jin Eryou
Effect ground extends the service life of battery, improves the work efficiency of battery.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these figures.
Fig. 1 is the plan structure schematic diagram of a kind of battery thermal management system that one embodiment of the invention provides；
Fig. 2 is the side-looking structural representation of the battery thermal management system shown in Fig. 1；
Fig. 3 is the structural representation in the 3rd connection air channel that another embodiment of the present invention provides；
Fig. 4 is the structural representation in the first connection air channel that another embodiment of the present invention provides；
Fig. 5 a is the side-looking structural representation of the refrigeration module that another embodiment of the present invention provides；
Fig. 5 b is the air channel structure schematic diagram of the refrigeration module that another embodiment of the present invention provides；
Fig. 6 is the schematic flow sheet of a kind of battery thermal management method that one embodiment of the invention provides；
Fig. 7 is the schematic flow sheet of a kind of battery thermal management method that another embodiment of the present invention provides；
Fig. 8 is the schematic flow sheet of a kind of battery thermal management method that another embodiment of the present invention provides；
Description of reference numerals in Fig. 1～Fig. 5 b: 1-the first heat exchange module；2-the second heat exchange module；3-water conservancy diversion wind
Road；31-first connects air channel；32-second connects air channel；33-the 3rd connects air channel；34-the 4th connects air channel；35-top layer is led
Stream air channel；36-bottom diversion air duct.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Fig. 1 is the plan structure schematic diagram of a kind of battery thermal management system in one embodiment of the invention, and Fig. 2 is Fig. 1 institute
The side-looking structural representation of the battery thermal management system shown.Specifically, as it is shown in figure 1, battery thermal management system in the present embodiment
System includes: the first heat exchange module the 1, second heat exchange module 2 and diversion air duct 3.Wherein, described first heat exchange module 1 with
Described second heat exchange module 2 is arranged at the both sides of Battery case, and diversion air duct 3 is arranged at the inside of Battery case.
As in figure 2 it is shown, described diversion air duct 3 includes: top layer diversion air duct 35, bottom diversion air duct 36, first connect wind
Road 31, second connects air channel the 32, the 3rd and connects air channel 33 and the 4th connection air channel 34.Wherein, top layer diversion air duct 35 is for right
Upper strata battery cools down or heats, and bottom diversion air duct 36 is for cooling down lower floor's battery or heating.
Specifically, as in figure 2 it is shown, described first heat exchange module 1 is led with described top layer by the first connection air channel 31
First side in stream air channel 35 connects, and described first heat exchange module 1 is by the second connection air channel 32 and described bottom diversion air duct
First side of 36 connects, described second heat exchange module 2 by the 3rd connection air channel 33 and described top layer diversion air duct 35 the
Two sides connect, and described second heat exchange module 2 is connected by second side in the 4th connection air channel 34 with described bottom diversion air duct 36
Connect.
Understandably, top layer diversion air duct 35 includes that two air ports, the first crosswind mouth and first connect air channel 31 and connect, the
Two crosswind mouths and the 3rd connect air channel 33 and connect；Bottom diversion air duct 36 includes that two air ports, the first crosswind mouth and second connect
Air channel 32 connects, and the second crosswind mouth and the 4th connects air channel 34 and connects.So, described first heat exchange module 1, described second heat
Switching Module 2 and described diversion air duct 3 constitute the entirety sealed, and the annular passage i.e. sealed, annular passage is used for circulating
Cool down wind or add hot blast guiding, owing to air channel structure design ensures that air inlet/outlet is circulated according to the circular pattern of design.Pass through
The backplate composition sealing air flue of battery electrode column.In air channel, flow has a minima, ensures that and reaches radiating effect, stream
Amount is typically greater than 2m/s.
For example, as Fig. 3 be in the present embodiment the 3rd connection air channel 33 schematic diagram.Fig. 4 is in the present embodiment
First schematic diagram connecting air channel 31.Certainly, connecting air channel and be alternatively the connector of other shapes, the present embodiment is to this most in addition
Limit.
It should be noted that the first heat exchange module 1 is for air-flow heating or refrigeration, the second heat exchange module 2 is used for
Air-flow is heated or freezes.
As can be seen here, the present embodiment by arranging the first heat exchange module 1 and the second heat exchange in the both sides of Battery case
Module 2, and arrange diversion air duct 3 inside Battery case, connects air channel 31, second especially by first and connects air channel 32 by the
One heat exchange module 1 is connected with top layer diversion air duct 35 and bottom diversion air duct 36 respectively, and by the 3rd connection air channel 33,
4th connects air channel 34 is connected with top layer diversion air duct 35 and bottom diversion air duct 36 respectively by the second heat exchange module 2, thus
The first heat exchange module 1, described second heat exchange module 2 and described diversion air duct 3 is made to constitute the entirety sealed, thus
Ensure the degree of protection of battery system, and battery system is carried out efficient wind-cooling heat dissipating, and then effectively extend making of battery
With the life-span, improve the work efficiency of battery.
In an alternate embodiment of the present invention where, described first heat exchange module 1 can be refrigeration module or heating module,
Described second heat exchange module 2 can be heating module or refrigeration module.
Specifically, described refrigeration module includes: diversing flow system, vaporizer and temperature sensor.In the present embodiment, by air-conditioning
Vaporizer introduces battery thermal management system, and radiating effect is preferable.By forcing diversion air duct to ensure the mutual temperature difference of battery cell
Less.
For example, refrigeration module includes two diversing flow systems (such as fan), a vaporizer and a temperature sensing
Device.The structural representation of the refrigeration module as shown in Fig. 5 a, 5b, battery cooling low-temperature receiver is from the built-in evaporator of refrigeration module
(circulating line as in Fig. 5 b), fan is arranged in as circulation power source in the middle of refrigeration module, and fan both sides are as fan
Air inlet.Isolated by built-in evaporator fin between air inlet and the air outlet of fan.
Specifically, described heating module includes: diversing flow system, heater and temperature sensor.In the present embodiment, by air
Heater introduces battery thermal management system, and heats is preferable.By forcing diversion air duct to ensure the mutual temperature difference of battery cell
Less.
Further, as it is shown on figure 3, the operation principle of battery thermal management system in the present embodiment is:
A), diversing flow system blowout air-flow in the first heat exchange module 1 or the second heat exchange module 2；
B), airflow passes vaporizer or heater surfaces are lowered the temperature or are heated up；
C) air-flow after, lowering the temperature or heat up connects air channel 31 via first and enters top layer diversion air duct 35 and sent equably
To upper strata battery each pole surface；
D), air-flow connects behind air channel 33 via the 3rd, by the diversing flow system in the heat exchange module of opposite side by this air-flow
Connected air channel 34 by the 4th and deliver to bottom diversion air duct 36, and delivered to lower floor's battery each pole surface equably；
E), air-flow connects air channel 32 via second becomes the supplemental air flow in step a).
So so that in power battery box body, the air-flow of regulating cell operating ambient temperature completes from a) step to e) step
Suddenly, from e) step to the inner loop of a) step.
Fig. 6 is a kind of based on any one battery thermal management system above-mentioned battery thermal management in one embodiment of the invention
The schematic flow sheet of method, as shown in Figure 6, described method comprises the steps:
S601: the battery cell temperature in Real-time Collection Battery case, and obtain the temperature difference between battery cell.
S602: according to the temperature difference between described battery cell temperature and described battery cell, controls the first heat exchange mould
Block or the second heat exchange module are opened diversing flow system and carry out freezing or heating, so that temperature equalization.
Specifically, in the battery thermal management method of the present embodiment, can judge to work as according to the battery temperature of Real-time Collection
Front free state, effectively controls temperature difference between monomer, and suppression bulk temperature rises.Between battery cell, temperature is independently of heat radiation
With heating system, no matter currently whether adding refrigeration heat in other words, once occur excessive temperature differentials situation be switched on diversing flow system and
Heating or refrigeration carry out temperature equalization.
In an alternate embodiment of the present invention where, as it is shown in fig. 7, in the present embodiment battery thermal management method specifically include
Following steps:
S701: the battery cell temperature in Real-time Collection Battery case, and obtain the temperature difference between battery cell.
S702: judge that the temperature difference between described battery cell whether more than the first predetermined threshold value, the most then goes to step
S703, otherwise goes to step S701.
S703: open the first heat exchange module and the diversing flow system of the second heat exchange module.
S704: judge whether the temperature difference between described battery cell is less than the second predetermined threshold value, if then going to step
S705, otherwise goes to step S703.
S705: close described first heat exchange module or the diversing flow system of described second heat exchange module.
Wherein, the first predetermined threshold value is more than the second predetermined threshold value.Such as, the first predetermined threshold value may be configured as 8 DEG C, and second is pre-
If threshold value may be configured as 5 DEG C.
In the present embodiment, when excessive temperature differentials situation occurs, it is switched on the first heat exchange module and the second heat exchange module
Diversing flow system, so that the battery temperature difference reduces, it is achieved temperature equalization.
In an alternate embodiment of the present invention where, as shown in Figure 8, the first heat exchange module in the present embodiment is refrigeration
Module, specifically, in the present embodiment, battery thermal management method specifically includes following steps:
S801: the battery cell temperature in Real-time Collection Battery case, and obtain the temperature difference between battery cell.
S802: judge that whether the highest battery cell temperature is more than the 3rd predetermined threshold value.The most then go to step S803, no
Then go to step S801.
S803: open the diversing flow system of the first heat exchange module.
S804: the evaporator operation controlling described first heat exchange module is freezed.
S805: judge that whether the temperature difference between battery cell is more than the 4th predetermined threshold value.The most then go to step
S806, otherwise goes to step S808.
S806: the vaporizer controlling described first heat exchange module stops refrigeration.
S807: judge whether the temperature difference between described battery cell is less than the 5th predetermined threshold value, if then going to step
S804。
S808: judge that the highest battery cell temperature, whether less than the 6th predetermined threshold value, if then going to S809, otherwise goes to
Step S805.
S809: close the diversing flow system of described first heat exchanger.
Wherein, the 3rd predetermined threshold value is more than the 6th predetermined threshold value, and the 4th predetermined threshold value is more than the 5th predetermined threshold value.Such as,
3rd predetermined threshold value may be configured as 45 DEG C, and the 6th predetermined threshold value may be configured as 35 DEG C, and the 4th predetermined threshold value may be configured as 15 DEG C, the
Five predetermined threshold value may be configured as 8 DEG C.
In the present embodiment, when the highest battery cell temperature higher than three predetermined threshold value time, control evaporator operation with refrigeration,
Open the diversing flow system of refrigeration module simultaneously.And the most also detect the temperature difference between battery cell, it is ensured that between battery cell
Temperature difference the most excessive, if temperature difference is more than the 4th predetermined threshold value, then closes vaporizer, the most only open diversing flow system so that
After temperature difference effectively reduces, it is then turned on vaporizer and freezes, until after the highest battery cell temperature is down to the 6th predetermined threshold value,
Close diversing flow system to stop cooling.So, the present embodiment judges current monolithic state according to the battery temperature of Real-time Collection,
And effectively control temperature difference between monomer, and suppression bulk temperature rises.
In an alternate embodiment of the present invention where, described method also comprises the steps:
When receiving automobile starting request or the charge request of user's input, it is judged that whether battery temperature is more than start-up temperature
Threshold value or charging temperature threshold value；
If described battery temperature is less than or equal to start-up temperature threshold value or charging temperature threshold value, then open the second heat exchange module
Diversing flow system, control simultaneously described second heat exchange module heater work heat.
It should be noted that be divided into heating mode and holding mode according to user's difference demand.Heating mode is when using
When family active request starts electric automobile, if temperature is unsatisfactory for startup demand or charge requirement, it is then turned on battery heating.
Holding mode is when battery case temperature is less than preset temperature (such as 0 DEG C, can demarcate), and battery heating is opened automatically
Dynamic, it is ensured that battery temperature can work under ideal state, it is ready to charging or starts.Both of which can be by user
Select at the mutual screen of display according to different demands.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each method embodiment is permissible
The hardware relevant by programmed instruction completes.Aforesaid program can be stored in a computer read/write memory medium.Should
Program upon execution, performs to include the step of above-mentioned each method embodiment；And aforesaid storage medium includes: ROM, RAM, magnetic disc
Or the various medium that can store program code such as CD.
Also, it should be noted in this article, the relational terms of such as first and second or the like is used merely to one
Entity or operation separate with another entity or operating space, and not necessarily require or imply between these entities or operation
There is relation or the order of any this reality.And, term " includes ", " comprising " or its any other variant are intended to contain
Comprising of lid nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
Above example only in order to technical scheme to be described, is not intended to limit；Although with reference to previous embodiment
The present invention is described in detail, it will be understood by those within the art that: it still can be to aforementioned each enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent；And these amendment or
Replace, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a battery thermal management system, it is characterised in that including: the first heat exchange module, the second heat exchange module and water conservancy diversion
Air channel；Described first heat exchange module and described second heat exchange module are arranged at the both sides of Battery case；
Described diversion air duct includes: top layer diversion air duct, bottom diversion air duct, first connect air channel, second connect air channel, the 3rd
Connect air channel and the 4th and connect air channel；
Described first heat exchange module is connected with the first side of described top layer diversion air duct by the first connection air channel, and described first
Heat exchange module is connected with the first side of described bottom diversion air duct by the second connection air channel, and described second heat exchange module leads to
Crossing the 3rd connection air channel to be connected with the second side of described top layer diversion air duct, described second heat exchange module is by the 4th connection wind
Road is connected with the second side of described bottom diversion air duct；
Described first heat exchange module, described second heat exchange module and described diversion air duct constitute the entirety sealed.
Battery thermal management system the most according to claim 1, it is characterised in that described first heat exchange module is refrigeration mould
Block or heating module, described second heat exchange module is heating module or refrigeration module.
Battery thermal management system the most according to claim 2, it is characterised in that described refrigeration module includes: diversing flow system,
Vaporizer and temperature sensor.
Battery thermal management system the most according to claim 2, it is characterised in that described heating module includes: diversing flow system,
Heater and temperature sensor.
5. a battery thermal management method based on the battery thermal management system according to any one of Claims 1 to 4, its feature
Being, described method includes:
Battery cell temperature in Real-time Collection Battery case, and obtain the temperature difference between battery cell；
According to the temperature difference between described battery cell temperature and described battery cell, control the first heat exchange module or the second heat
Switching Module is opened diversing flow system and carries out freezing or heating, so that temperature equalization.
Battery thermal management method the most according to claim 5, it is characterised in that described according to described battery cell temperature and
Temperature difference between described battery cell, controls the first heat exchange module or the second heat exchange module is opened diversing flow system and carries out
Refrigeration or heating, including:
Judge that whether the temperature difference between described battery cell is more than the first predetermined threshold value；
If the temperature difference between described battery cell is more than the first predetermined threshold value, open the first heat exchange module and the second heat exchange
The diversing flow system of module；
Judge that whether the temperature difference between described battery cell is less than the second predetermined threshold value；
If the temperature difference between described battery cell less than the second predetermined threshold value, closes described first heat exchange module or described the
The diversing flow system of two heat exchange modules；
Wherein, the first predetermined threshold value is more than the second predetermined threshold value.
Battery thermal management method the most according to claim 5, it is characterised in that described according to described battery cell temperature and
Temperature difference between described battery cell, controls the first heat exchange module or the second heat exchange module is opened diversing flow system and carries out
Refrigeration or heating, including:
Judge that whether the highest battery cell temperature is more than the 3rd predetermined threshold value；
If described battery cell temperature is more than the 3rd predetermined threshold value, opens the diversing flow system of the first heat exchange module, control simultaneously
The evaporator operation of described first heat exchange module is freezed；
Judge that whether the temperature difference between battery cell is more than the 4th predetermined threshold value；
If the temperature difference between battery cell is more than the 4th predetermined threshold value, then the vaporizer controlling described first heat exchange module stops
Only refrigeration, and judge whether the temperature difference between described battery cell is less than the 5th predetermined threshold value, if the most again controlling described
The evaporator operation of the first heat exchange module is freezed；
If the temperature difference between battery cell is less than or equal to the 4th predetermined threshold value, then judge whether the highest battery cell temperature is less than
6th predetermined threshold value；
If the highest described battery cell temperature is less than the 6th predetermined threshold value, then close the diversing flow system of described first heat exchanger；
Wherein, the 3rd predetermined threshold value is more than the 6th predetermined threshold value, and the 4th predetermined threshold value is more than the 5th predetermined threshold value.
Battery thermal management method the most according to claim 5, it is characterised in that described method also includes:
When receiving automobile starting request or the charge request of user's input, it is judged that whether battery temperature is more than start-up temperature threshold value
Or charging temperature threshold value；
If described battery temperature is less than or equal to start-up temperature threshold value or charging temperature threshold value, then open leading of the second heat exchange module
Flow device, the heater work simultaneously controlling described second heat exchange module is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798900.4A CN106229581B (en) | 2016-08-31 | 2016-08-31 | A kind of battery thermal management system and method |
Applications Claiming Priority (1)
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| CN106229581B (en) | 2019-08-27 |
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