CN208352485U - Batteries of electric automobile composite cooling system - Google Patents
Batteries of electric automobile composite cooling system Download PDFInfo
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- CN208352485U CN208352485U CN201820737448.5U CN201820737448U CN208352485U CN 208352485 U CN208352485 U CN 208352485U CN 201820737448 U CN201820737448 U CN 201820737448U CN 208352485 U CN208352485 U CN 208352485U
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- refrigerant
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model relates to a kind of batteries of electric automobile composite cooling systems, according to the difference of the cooling operating condition grade of battery, keep the battery for being equipped on vehicle cooling using refrigerant circulation and coolant liquid circulation, it include: battery pack, radiator, the radiator room temperature cooling circuit that radiator fan, coolant liquid water circulating pump are constituted；The indirect cooling circuit of refrigerant that battery pack, battery heat exchanger, fluid reservoir, coolant liquid water circulating pump, heat pump system unit and the 4th valve body are constituted；The direct cooling circuit of refrigerant that battery pack, heat pump system unit and third valve body are constituted.The utility model realizes the battery type of cooling of the larger temperature span that battery pack normality is cooling, high temperature is cooling and overheat is cooling, cooling grade gradually transition, and it is multiloop unit is mutually integrated, the temperature operation range and efficiency of battery cooling system are improved, and then improves environmental suitability, safety and the mileage travelled of vehicle.
Description
Technical field
The utility model belongs to batteries of electric automobile field of cooling, is related to a kind of batteries of electric automobile Compound cooling system
System.
Background technique
Electric car utilizes the battery as power source premised on not consuming traditional fossil energy, in terms of energy conservation and environmental protection
With the advantage that traditional vehicle is incomparable.All there is a suitable operating temperature range when working in batteries of electric automobile, generally
About 15~45 DEG C, the service performance and service life of battery can be seriously affected beyond the temperature range, or even will appear safety
Hidden danger.However, batteries of electric automobile can generate a large amount of heat in charge and discharge, it cannot such as shed, be easy to cause in temperature in time
It rises and causes battery spontaneous combustion or explosion beyond temperature range.
Currently, the type of cooling of power battery mainly has air-cooled and two kinds of forms of liquid cooling, since the thermal coefficient of air is low,
The thermal management effect of air-cooled form is unsatisfactory；Although traditional liquid cooling form is preferable to battery cooling effect, heat transfer process is multiple
Miscellaneous, system response is small compared with slow and temperature controlling range, especially under battery superheat state, can not be quickly cooled down battery, cause whole
Vehicle be can not work normally under limiting temperature and safety accident even occurs to the bad adaptability of environment.
The cooling system of pure electric automobile is disclosed in Chinese patent literature CN206537158U, including passes through coolant liquid
Sequentially connected motor and electric machine controller heat dissipation loop, battery pack heat dissipation loop and heating warm wind loop, by the way that threshold value is arranged
Mode, when the temperature of charger, battery pack be greater than threshold value when, start different cooling loops and cooled down.The system will
The cooling loop of different device is integrated, but a radiator cooling unit is used only and goes to provide the cold of multiple electric elements
Amount, when heat dissipation capacity demand is larger, especially when battery be in the component temperatures such as hot and motor it is higher when, may be unable to satisfy
The thermal management requirements of system.And when environment temperature is higher, the heat-sinking capability of radiator is greatly reduced.
After searching and discovering the prior art, a kind of electric vehicle is disclosed in Chinese patent literature CN106571497A
Battery system heat management device, radiator, air cooling equipment, cooling water tank including battery and by compressor, condenser,
The cooling assembly that expansion valve and heat exchanger are constituted radiates to battery by cooling assembly when environment temperature is higher；Work as ring
When border temperature is lower, the flow of cold air around cooling water tank is driven by air cooling equipment, cooling water tank dissipates the heat of battery
Enter into air, the radiator that anti-icing fluid after cooling enters battery exchanges heat, and battery is made to cool down.The battery of the system
Radiator is superimposed use with the heat exchanger in cooling component, while reducing battery thermal management system heat transfer effect, increases
The complexity of system, and can not cope with the cooling requirement of battery superheat state.
A kind of power battery coldplate and cooling device, including pressure are disclosed in Chinese patent literature CN107768768A
Contracting machine, condenser, expansion valve, evaporation plate, coldplate and battery, the liquid refrigerant come out from condenser are divided into two-way: one
Road enters evaporator after the first expansion valve reducing pressure by regulating flow, and heat absorption of gasifying in evaporator carries out heat exchange with extraneous air,
Achieve the effect that refrigeration；Another way is passed directly into coldplate, after battery is bonded with coldplate after the second expansion valve reducing pressure by regulating flow
It is in close contact, the heat transfer that battery generates when working to coldplate, refrigerant evaporation endothermic in coldplate takes away battery work
As when the heat that generates, to cool down to battery, wherein coldplate is provided with multiple runners, closes coolant flow distribution
Reason, to battery uniform decrease in temperature, but methods for cooling is single, will start cooling device under different cooling conditions, causes biggish energy
Source consumption, and cold shock is be easy to cause when room temperature cooling.
Utility model content
The purpose of this utility model is to provide a kind of batteries of electric automobile composite cooling system that can solve the above problem,
The problem of being rapidly cooled in overheat conditions to battery especially for battery and existing electric vehicle lack complete battery
The cooling system that total temperature range, each unit combine cannot promote the defect of vehicle environmental adaptability well.It is dissipated multiple
The cooling circuit of hot grade is compound to cope with the different grades of cooling requirement of battery, cools down battery modules efficiently, provides one
Kind is structurally reasonable, and stable, heat management is efficient, adapts to varying environment, and does not cause under vehicle performance because heat management is protected
The batteries of electric automobile composite cooling system of drop, and a kind of meeting above-mentioned composite system requirement, permission is provided on this basis
Flow through heat exchanger plates in the battery pack of two kinds of different cycle fluids.
The utility model is cold by radiator room temperature the technical scheme adopted is that batteries of electric automobile composite cooling system
But circuit, the indirect cooling circuit of refrigerant and the direct cooling circuit of refrigerant are mutually integrated；
Radiator room temperature cooling circuit includes the radiator of side setting radiator fan, and radiator one end passes through the first battery
Heat exchanger plates coolant inlet in cooling liquidus connection battery pack is wrapped, the first valve body is set on the cooling liquidus of the first battery pack；Heat dissipation
The device other end connects heat exchanger plates cooling liquid outlet in battery pack, the cooling liquidus of the second battery pack by the cooling liquidus of the second battery pack
On set gradually the second valve body and coolant liquid water circulating pump；
The indirect cooling circuit of refrigerant includes battery heat exchanger, and the coolant inlet of battery heat exchanger passes through third electricity
The cooling liquidus of Chi Bao connects the first valve body, and the cooling liquid outlet of battery heat exchanger passes through the cooling liquidus connection of the 4th battery pack the
Two valve bodies connect forming circuit with coolant liquid water circulating pump and battery pack, fluid reservoir are arranged on the cooling liquidus of the 4th battery pack；Heat
Pumping system unit is between battery pack and battery heat exchanger, and the refrigerant outlet of heat pump system unit is through the 4th valve body and electricity
The refrigerant inlet of pond heat exchanger connects, the refrigerant outlet of battery heat exchanger and the refrigerant inlet of heat pump system unit
Connection；
The direct cooling circuit of refrigerant includes heat pump system unit, and the refrigerant outlet of heat pump system unit is through third valve body
It is connected by heat exchanger plates refrigerant inlet in the battery pack of the second battery pack refrigerant line and battery pack, the system of heat pump system unit
Cryogen entrance to be formed back by the first battery pack refrigerant line and connecting with heat exchanger plates refrigerant outlet in the battery pack of battery pack
Road.
First valve body, the second valve body are triple-valve body, and third valve body, the 4th valve body are electromagnetic expanding valve body.
The battery pack include battery modules and with the bottom that battery modules directly contact set or the battery pack of side in change
Hot plate.
Heat exchanger plates include heat exchanger plates refrigerant inlet in the battery pack communicated, heat exchanger plates system in battery pack in the battery pack
Cryogen outlet, heat exchanger plates coolant inlet, the battery pack in heat exchanger plates cooling liquid outlet and battery pack in the battery pack communicated
The double-layer heat exchange plate structure or refrigerant and coolant liquid that interior heat exchanger plates structure is upper layer refrigerant lower layer coolant liquid are parallel in same layer
Single layer heat exchanger plates structure.
The heat pump system unit includes condenser and compressor.
The battery heat exchanger is plate heat exchanger structure.
The control method of batteries of electric automobile composite cooling system, using heat management grading control, battery underload state is adopted
It is cooling that level-one is carried out with radiator room temperature cooling；The cooling second level that carries out is cooling indirectly using refrigerant for the medium/high load state of battery, electricity
Excessively hot be quickly cooled down using the direct low temperature of refrigerant in pond carries out three-level cooling.
The utility model has the beneficial effects that the batteries of electric automobile composite cooling system of the utility model, in conjunction with heat dissipation
Device room temperature cooling circuit, the indirect cooling circuit of refrigerant and refrigerant directly connect cooling circuit, according to battery applying working condition, cooling
The difference of demand makes the cooling battery of each circulation loop cooperation using coolant liquid or refrigerant working medium, especially for battery mistake
Warm status, using refrigerant, evaporation endothermic makes battery quickly and effectively cool down in heat exchanger plates directly in battery pack, to realize
The multiplexing conformity of battery of electric vehicle cooling system and the extension of temperature control region.Moreover, battery corresponds to corresponding demand mode
It is efficiently cooled down, efficiently uses the interior energy, play the optimum performance of battery, and then increase the mileage travelled of vehicle.
In addition, the heat pump system unit antiport of the batteries of electric automobile composite cooling system, may be implemented heat-production functions, and
And electric unit waste heat is utilized, recycling heating battery can further lifting system heating performance.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the batteries of electric automobile composite cooling system of the utility model；
Fig. 2 is the coolant liquid refrigerating circuit of the level-one cooling condition of the utility model batteries of electric automobile composite cooling system
Figure；
Fig. 3 is that the coolant liquid of the second level cooling condition of the batteries of electric automobile composite cooling system of the utility model is freezed back
Lu Tu；
Fig. 4 is that the chiller refrigeration of the three-level cooling condition of the batteries of electric automobile composite cooling system of the utility model returns
Lu Tu；
Fig. 5 is a kind of preferred structure of heat exchanger plates in battery pack in the battery pack of the utility model；
Fig. 6 is heat exchanger plates another kind preferred structure in battery pack in the battery pack of the utility model；
Fig. 7 is the cooling effect temperature drop figure in each circuit of the utility model batteries of electric automobile composite cooling system；
Fig. 8 is the utility model batteries of electric automobile composite cooling system heat pump system cellular construction schematic diagram；
Fig. 9 is the battery management system schematic diagram where the utility model batteries of electric automobile composite cooling system；
Figure 10 is a kind of flow diagram of preferred batteries of electric automobile cooling means of the utility model.
In figure, 1. radiators, 2. radiator fans, 3. battery packs, 4. heat pump system units, 5. battery heat exchangers, 6. is cold
But liquid water circulating pump, 7. fluid reservoirs, 8. condensers, 9. compressors, the cooling liquidus of 21. first battery packs, 22. second battery packs are cold
But liquidus, 23. first battery pack refrigerant lines, 24. second battery pack refrigerant lines, the cooling liquidus of 25. third battery packs, 26.
4th battery pack cools down liquidus, heat exchanger plates in 40. battery packs, heat exchanger plates refrigerant inlet in 41. battery packs, in 42. battery packs
Heat exchanger plates refrigerant outlet, heat exchanger plates cooling liquid outlet in 43. battery packs, heat exchanger plates coolant inlet in 44. battery packs, 45.
Upper layer heat exchanger plates, 46. lower layer's heat exchanger plates, 47. single layer heat exchanger plates, 51. radiator room temperature cooling circuits, 52. refrigerants are indirectly cold
But circuit, the direct cooling circuit of 53. refrigerants, 111. first valve bodies, 112. second valve bodies, 113. third valve bodies, 114. the 4th
Valve body.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Batteries of electric automobile composite cooling system is by radiator room temperature cooling circuit 51, indirect 52 and of cooling circuit of refrigerant
The direct cooling circuit 53 of refrigerant is mutually integrated.
Radiator room temperature cooling circuit 51 includes the radiator 1 of side setting radiator fan 2, and 1 one end of radiator passes through the
The cooling liquidus 21 of one battery pack connects heat exchanger plates coolant inlet 44 in battery pack, and the is arranged on the cooling liquidus 21 of the first battery pack
One valve body 111；1 other end of radiator connects heat exchanger plates cooling liquid outlet in battery pack by the cooling liquidus 22 of the second battery pack
43, the second battery pack cools down and sets gradually the second valve body 112 and coolant liquid water circulating pump 6 on liquidus 22.
The indirect cooling circuit 52 of refrigerant includes battery heat exchanger 5, and the coolant inlet of battery heat exchanger 5 passes through the
The cooling liquidus 25 of three battery packs connects the first valve body 111, and the cooling liquid outlet of battery heat exchanger 5 is cooling by the 4th battery pack
Liquidus 26 connects the second valve body 112, connect forming circuit, the 4th battery pack coolant liquid with coolant liquid water circulating pump 6 and battery pack 3
Fluid reservoir 7 is set on line 26；Heat pump system unit 4 between battery pack 3 and battery heat exchanger 5, heat pump system unit 4
Refrigerant outlet is connect through the 4th valve body 114 with the refrigerant inlet of battery heat exchanger 5, the refrigerant of battery heat exchanger 5
Outlet is connect with the refrigerant inlet of heat pump system unit 4.
The direct cooling circuit 53 of refrigerant includes heat pump system unit 4, and the refrigerant outlet of heat pump system unit 4 is through third
Valve body 113 is connect by the second battery pack refrigerant line 24 with heat exchanger plates refrigerant inlet 41 in the battery pack of battery pack 3, heat pump
The refrigerant inlet of system unit 4 freezes by the first battery pack refrigerant line 23 and with heat exchanger plates in the battery pack of battery pack 3
42 connection forming circuit of agent outlet.
First valve body 111, the second valve body 112 are selectively opened and closed according to the cooling condition difference of batteries of electric automobile
Triple-valve body；Third valve body 113, the 4th valve body 114 are selectively opened according to the demand of the cooling condition of batteries of electric automobile
The electromagnetic expanding valve body closed.
Radiator 1 will be flowed into the coolant liquid inside radiator 1 by radiator fan 2 and ambient enviroment carries out heat exchange,
Cooled down with solution-air heat transfer form to 51 coolant liquid of radiator room temperature cooling circuit.
Battery pack 3 include battery modules and with the bottom that battery modules directly contact set or the battery pack of side in heat exchanger plates
40, refrigerant and coolant liquid are flowed separately through in battery pack 3.
Heat pump system unit 4 is coupled with battery pack 3 or battery heat exchanger 5, and heat pump system unit 4 includes compressor
9 and condenser 8, refrigerant be present in compressor 9, all the way support the indirect cooling circuit 52 of refrigerant, in battery heat exchanger 5
In exchange heat with coolant liquid, support the direct cooling circuit 53 of refrigerant, battery pack in battery pack 3 after refrigerant expansion all the way
Evaporation endothermic in interior heat exchanger plates 40 is directly exchanged heat in the form of solid-liquid with battery modules, reinforces battery cooling, and last refrigerant exists
The circulation loop that compressor 9 forms closure is returned to after exchanging heat in condenser 8 with extraneous surrounding air, refrigeration effect is good.
Battery heat exchanger 5 is coupled through the 4th valve body 114 with heat pump system unit 4, to being flowed into battery heat exchanger 5
Internal coolant liquid carries out heat exchange with the refrigerant expanded through the 4th valve body 114 is flowed out from heat pump system unit 4, with liquid-liquid
Heat transfer form cools down to 52 coolant liquid of the indirect cooling circuit of refrigerant；Battery heat exchanger 5 is plate heat exchanger structure, volume
Small, weight is small, and staggered currency structure makes internal cold fluid and hot fluid generate strong turbulent flow and reach high heat transfer effect；Battery heat is handed over
The heat-exchange capacity of parallel operation 5 is related to its heat exchange plate number of plies, therefore the heat exchange plate number of plies can be adjusted according to demand, and refrigerant is logical
The cold fluid runner in battery heat exchanger 5 is crossed, coolant liquid is by the hot fluid runner in battery heat exchanger 5, through heat exchanger plates
Piece forms heat exchange.
Coolant liquid water circulating pump 6 extracts the coolant liquid stored in fluid reservoir 7 through the second valve body 112, provides for cooling circuit
Coolant liquid.
Heat exchanger plates 40 have double-work medium process, i.e. refrigerant independent flow and coolant liquid independent flow in battery pack；Battery
Heat exchanger plates 40 are the double-layer heat exchange plate structure or refrigerant and coolant liquid of upper layer refrigerant lower layer coolant liquid parallel in same layer in wrapping
Single layer heat exchanger plates structure.
The utility model is according to automobile running working condition power demand and battery heat production situation, using heat management grading control,
That is battery underload state radiator room temperature cooling, the medium/high load state refrigerant of battery cool down indirectly, and the excessively hot refrigerant of battery is straight
Connect low temperature rapid cooling.
Three kinds herein different methods for cooling batteries under NEDC state of cyclic operation are carried out in 45 degrees Celsius of initial temperatures cold
But, cooling temperature drop effect such as Figure of description 8, curve 1 represent 51 lowering ability of radiator room temperature cooling circuit, 2 generation of curve
But lowering ability, curve 3 represent direct 53 lowering ability of cooling circuit of refrigerant to the indirect cooling circuit 52 of table refrigerant, it can be seen that
51 lowering abilities of radiator room temperature cooling circuit are relatively low, are suitable for battery underload state, the indirect cooling circuit 52 of refrigerant
Lowering ability is higher than radiator room temperature cooling circuit 51, the direct 53 lowering ability highest of cooling circuit of refrigerant, but may
Cold shock is caused to battery, is cooled down so being commonly used in battery and being in the overheat stage to it.And it is cold selected by battery temperature is higher
But the effect of mode is better, and the heat exchange mode of three kinds of cooling circuits of this paper is radiator room temperature cooling-gas-liquid heat exchange respectively
Form, refrigerant cool down-liquid liquid heat transfer form indirectly, and refrigerant directly cooling-liquid consolidates heat transfer form, the heat exchange of gas-liquid-solid three-phase
Ability is ordered as that gas-liquid < liquid liquid < liquid is solid, so respectively corresponding the cold of selection various heat exchange ability from low to high according to battery temperature
But mode, therefore radiator room temperature cooling is used in battery underload state herein, the medium/high load state of battery is indirect using refrigerant
Cooling, battery is excessively hot to use the direct low temperature of refrigerant to be quickly cooled down, and is cooperated herein using three kinds of different types of cooling sharp
In the efficient utilization of the interior energy, the optimum performance of battery is played.
Battery of electric vehicle cooling condition includes: that level-one is cooling, i.e., low heat loads are cooling；Second level is cooling, i.e., medium/high thermic load
It is cooling；Three-level is cooling, i.e. high heat load and overheat cooling.
When battery is in level-one cooling condition, according to the cooling request of battery system and coolant temperature, radiator room temperature
First valve body 111 of cooling circuit 51 and the second valve body 112 are open, pass through the cooling liquidus 21 of the first battery pack and the second battery pack
Cooling liquidus 22 connects battery pack 3 and radiator 1, after coolant liquid flows into radiator 1 and ambient enviroment heat exchange, through battery pack 3
Interior heat exchanger plates keep battery cooling, in the case where not running heat pump system unit 4, only by coolant liquid and external environment exchange heat come
Cooling battery.
It is indirect according to the cooling request of battery system and coolant temperature, refrigerant when battery is in second level cooling operating condition
The first valve body 111, the second valve body 112 and the 4th valve body 114 of cooling circuit 52 are open, pass through the cooling liquidus 25 of third battery pack
With the cooling liquidus 26 of the 4th battery pack, connect battery pack 3, battery heat exchanger 5, fluid reservoir 7, coolant liquid water circulating pump 6, it is cold
But liquid stream keeps battery cooling through battery pack 3, and is coupled by heat pump system unit 4 with battery heat exchanger 5, make refrigerant and
Coolant liquid heat exchange, reduces the coolant temperature for flowing through battery pack 3.
When battery is in three-level cooling condition, the direct cooling circuit 53 of refrigerant is according to the cooling request of battery system and system
Refrigerant temperature, open third valve body 113 make electricity by the first battery pack refrigerant line 23 and the second battery pack refrigerant line 24
Pond packet 3 is directly connected with heat pump system unit 4, and starting heat pump system unit 4 makes refrigerant exchange heat in the battery pack of battery pack 3
Direct evaporation endothermic cools down battery in plate 40.
When the composition circulation loop of heat exchanger plates 40 and battery modules are exchanged heat a kind of working medium in battery pack, there are another
The circulation loop of kind working medium shuts down, that is, when there is a cooling circuit job, other cooling circuits do not work
Situation.
In the utility model, heat exchanger plates 40 are mounted on the side or bottom surface of battery modules, refrigerant warp in bilayer cells packet
Heat exchanger plates refrigerant inlet 41 is flowed out after flowing through upper layer heat exchanger plates 45 by heat exchanger plates refrigerant outlet 42 in battery pack in battery pack,
Coolant liquid is gone out after heat exchanger plates coolant inlet 44 in battery pack flows through lower layer's heat exchanger plates 46 by heat exchanger plates coolant liquid in battery pack
Mouthfuls 43 flow out, it is worth noting that, two kinds of working medium do not exchange heat mutually in flow process, but individually, respectively with battery
Mould group mutually exchanges heat, i.e., when battery cooling system is in three-level cooling condition, refrigerant flows through 45 phase of upper layer heat exchanger plates
Infantile feverish perspiration hair, directly exchanges heat with battery modules, and circuit where the coolant liquid in lower layer's heat exchanger plates 46 is inoperative, is not involved in and exchanged heat
Journey；Single layer heat exchanger plates 47 with two-column parallel pipeline are mounted on the side or bottom surface of battery modules, and refrigerant is through battery pack
It is flowed out after pipeline where interior heat exchanger plates refrigerant inlet 41 flows through by heat exchanger plates refrigerant outlet 42 in battery pack, in battery pack
Heat exchanger plates coolant liquid is after heat exchanger plates coolant inlet 44 in battery pack flows through place pipeline by heat exchanger plates coolant liquid in battery pack
Outlet 43 outflow, similarly, two kinds of working medium do not exchange heat mutually in flow process, but individually, respectively with battery modules
Mutually heat exchange.
The batteries of electric automobile composite cooling system of the utility model is indirect by radiator room temperature cooling circuit 51, refrigerant
The direct cooling circuit 53 of cooling circuit 52, refrigerant is formed integral with one another, and improves the cooling efficiency of battery, and it is cold to realize normality
But, the gradually transition and the extension of battery temperature control range that high temperature is cooling and overheat is cooling, particularly with battery mistake
The limiting condition of heat, by refrigerant, evaporation endothermic quickly and effectively cools down battery in heat exchanger plates 40 directly in battery pack.
In addition, the heat pump system unit 4 of the batteries of electric automobile composite cooling system is anti-when battery temperature is too low
To operating, refrigerant condenses heat release in heat exchanger plates 40 in battery pack, heat-production functions may be implemented, and to the radiator
The waste heat of electric unit is recycled by coolant liquid in room temperature cooling circuit 51, can be heated battery and further be promoted and is
Controlling hot property.
The batteries of electric automobile composite cooling system of the utility model is applied to battery management system, battery management system
Comprising central processing module and local measurement module, two module via controller MCU realize communication link by way of CAN bus
It connects；Central processing module is mainly the management for carrying out local measurement module, by CAN bus communication mode, carries out battery status
The reception of information and the transmission for controlling information；Local measurement module includes charging module, balance module, battery composite cooling system
And data acquisition module, wherein data acquisition module and battery composite cooling system are the achievement unit of the utility model control method
Point, data acquisition module is used to temperature collection, and controller MCU passes through the battery temperature number that CAN bus acquires temperature sensor
It is analyzed and determined according to central processing unit is fed back to, and receives the control signal that central processing unit is issued by CAN bus, to control
The utility model batteries of electric automobile composite cooling system processed.
The utility model batteries of electric automobile composite cooling system control method, specifically comprises the following steps:
Step 1, data collecting module collected environment temperature, battery temperature temperature acquisition: are utilized；
Step 2, battery temperature is judged whether in a~b DEG C of set temperature section, a is preferably 20 DEG C, and b is preferably 35 DEG C,
It is that battery composite cooling system does not start, no to then follow the steps 3；
Step 3, battery temperature is judged in b~c DEG C of set temperature section, and it is to then follow the steps 4 that c, which is preferably 50 DEG C, no
Then follow the steps 5；
Step 4, judge that environment temperature is less than battery temperature, be open batteries of electric automobile composite cooling system first
The valve port that valve body 111 and the second valve body 112 connect with radiator 1, starting level-one is cooling, connects battery pack 3 and radiator 1,
Coolant liquid flows into radiator 1 after heat exchanger plates in battery pack 3 keep battery cooling and ambient enviroment exchanges heat；Otherwise electric car is opened
Valve port, the second valve body 112 and the fluid reservoir 7 that first valve body 111 of battery composite cooling system connects with battery heat exchanger 5
The valve port and the 4th valve body 114 to connect, starting second level is cooling, and coolant liquid flows through the cooling battery of battery pack 3, heat pump system unit 4
It is coupled with battery heat exchanger 5, refrigerant and coolant liquid exchange heat, and reduce coolant temperature；
Step 5, judge that battery temperature is to open batteries of electric automobile composite cooling system beyond c DEG C of set temperature value
Third valve body 113, starting three-level is cooling, and battery pack 3 and heat pump system unit 4 are directly connected, and refrigerant is in battery pack 3
Direct evaporation endothermic cools down battery in heat exchanger plates 40 in battery pack, and last refrigerant is in the condenser 8 of heat pump system unit 4
It exchanges heat with extraneous surrounding air；Otherwise enter heating control model, be not developed in details herein；
Step 6, postpone step: setting delay time t, t is preferably 1min；
Step 7, temperature acquisition updates, and circuits sequentially until coolant liquid water circulating pump 6 or compressor 9 stop working.
Because the transmission of heat has certain retardance, i.e., temperature can not jumping characteristic variation, but need time gradually mistake
Cross, thus to refrigerating mode carry out time setting, set delay time, according to battery modules capacity, cooling system ability it is big
Small, this delay time will make corresponding adjustment, this paper delay time preferred 1min.
After carrying out battery temperature detecting step, the battery of this battery temperature and the detection of last time control loop can also be judged
The size of temperature also may determine that the ratio that the battery temperature of this battery temperature and the detection of last time control loop increases or declines
With the size of pre-set ratio；When carrying out delay time step, cooling circuit cycle-index setting can also be carried out, it can also be more
Intelligence by heat dissipation capacity needed for the difference preestimating battery mould group of battery temperature and preset temperature, calculate coolant liquid at this time or system
Required refrigerating capacity at a temperature of cryogen working medium, i.e., flow number, carry out cooling circuit liquid working substance flow set.
Each embodiment in this specification adopts that the above is only the preferred embodiment of the utility model only, not
For limiting the protection scope of the utility model.It is made within the spirit and principle of the present invention it is any modification, etc.
With replacement, improvement etc., it is all contained in the protection scope of the utility model.
Claims (6)
1. batteries of electric automobile composite cooling system, which is characterized in that indirect by radiator room temperature cooling circuit (51), refrigerant
Cooling circuit (52) and the direct cooling circuit of refrigerant (53) are mutually integrated；
Radiator room temperature cooling circuit (51) includes the radiator (1) of side setting radiator fan (2), and radiator (1) one end is logical
Cross heat exchanger plates coolant inlet (44) in the first battery pack cooling liquidus (21) connection battery pack, the cooling liquidus of the first battery pack
(21) the first valve body (111) are set on；Radiator (1) other end is connected in battery pack by the second battery pack cooling liquidus (22)
Heat exchanger plates cooling liquid outlet (43) sets gradually the second valve body (112) in the second battery pack cooling liquidus (22) and coolant liquid is followed
Ring water pump (6)；
The indirect cooling circuit of refrigerant (52) includes battery heat exchanger (5), and the coolant inlet of battery heat exchanger (5) passes through
The cooling liquid outlet of third battery pack cooling liquidus (25) connection the first valve body (111), battery heat exchanger (5) passes through the 4th electricity
Chi Bao cooling liquidus (26) connection the second valve body (112), connect forming circuit with coolant liquid water circulating pump (6) and battery pack (3),
Fluid reservoir (7) are arranged on cooling liquidus (26) in 4th battery pack；Heat pump system unit (4) is located at battery pack (3) and battery heat is handed over
Between parallel operation (5), the refrigerant outlet of heat pump system unit (4) is through the refrigeration of the 4th valve body (114) and battery heat exchanger (5)
The connection of agent entrance, the refrigerant outlet of battery heat exchanger (5) are connect with the refrigerant inlet of heat pump system unit (4)；
The direct cooling circuit of refrigerant (53) includes heat pump system unit (4), and the refrigerant outlet of heat pump system unit (4) is through
Three valve bodies (113) pass through heat exchanger plates refrigerant inlet in the second battery pack refrigerant line (24) and the battery pack of battery pack (3)
(41) connect, the refrigerant inlet of heat pump system unit (4) by the first battery pack refrigerant line (23) and with battery pack (3)
Heat exchanger plates refrigerant outlet (42) connection forming circuit in battery pack.
2. batteries of electric automobile composite cooling system according to claim 1, which is characterized in that first valve body
(111), the second valve body (112) is triple-valve body, and third valve body (113), the 4th valve body (114) are electromagnetic expanding valve body.
3. batteries of electric automobile composite cooling system according to claim 1, which is characterized in that battery pack (3) packet
Include battery modules and with the bottom that battery modules directly contact set or the battery pack of side in heat exchanger plates (40).
4. batteries of electric automobile composite cooling system according to claim 3, which is characterized in that heat exchange in the battery pack
Plate (40) includes heat exchanger plates refrigerant inlet (41) in the battery pack communicated, heat exchanger plates refrigerant outlet (42) in battery pack, phase
Heat exchanger plates coolant inlet (44) in heat exchanger plates cooling liquid outlet (43) and battery pack in logical battery pack；
Heat exchanger plates (40) structure is the double-layer heat exchange plate structure or refrigerant of upper layer refrigerant lower layer coolant liquid in the battery pack
With coolant liquid parallel in the single layer heat exchanger plates structure of same layer.
5. batteries of electric automobile composite cooling system according to claim 1, which is characterized in that the heat pump system unit
It (4) include condenser (8) and compressor (9).
6. batteries of electric automobile composite cooling system according to claim 1, which is characterized in that the battery heat exchanger
It (5) is plate heat exchanger structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820737448.5U CN208352485U (en) | 2018-05-17 | 2018-05-17 | Batteries of electric automobile composite cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820737448.5U CN208352485U (en) | 2018-05-17 | 2018-05-17 | Batteries of electric automobile composite cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208352485U true CN208352485U (en) | 2019-01-08 |
Family
ID=64889834
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820737448.5U Expired - Fee Related CN208352485U (en) | 2018-05-17 | 2018-05-17 | Batteries of electric automobile composite cooling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208352485U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711659A (en) * | 2018-05-17 | 2018-10-26 | 吉林大学 | Batteries of electric automobile composite cooling system and its control method |
| CN109830775A (en) * | 2019-01-15 | 2019-05-31 | 江苏大学 | It is a kind of based on plane heat pipe, liquid cooling, phase-change accumulation energy heat-conducting plate coupling power battery pack multistage cooling system and control method |
| DE102019203303A1 (en) * | 2019-03-12 | 2020-09-17 | Volkswagen Aktiengesellschaft | Device and method for temperature control of an electrochemical storage device and vehicle arranged in a vehicle |
| CN112467246A (en) * | 2020-11-25 | 2021-03-09 | 中国第一汽车股份有限公司 | Battery cooling system and battery cooling control method |
| CN112477549A (en) * | 2020-11-23 | 2021-03-12 | 艾泰斯热系统研发（上海）有限公司 | Cooling liquid cooling heat source switching device of multi-load heat pump system |
| WO2022143129A1 (en) * | 2020-12-29 | 2022-07-07 | 长城汽车股份有限公司 | Vehicle battery thermal management control method and apparatus, and vehicle |
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2018
- 2018-05-17 CN CN201820737448.5U patent/CN208352485U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711659A (en) * | 2018-05-17 | 2018-10-26 | 吉林大学 | Batteries of electric automobile composite cooling system and its control method |
| CN108711659B (en) * | 2018-05-17 | 2023-11-28 | 吉林大学 | Electric automobile battery composite cooling system and control method thereof |
| CN109830775A (en) * | 2019-01-15 | 2019-05-31 | 江苏大学 | It is a kind of based on plane heat pipe, liquid cooling, phase-change accumulation energy heat-conducting plate coupling power battery pack multistage cooling system and control method |
| DE102019203303A1 (en) * | 2019-03-12 | 2020-09-17 | Volkswagen Aktiengesellschaft | Device and method for temperature control of an electrochemical storage device and vehicle arranged in a vehicle |
| DE102019203303B4 (en) | 2019-03-12 | 2024-05-16 | Volkswagen Aktiengesellschaft | Device and method for controlling the temperature of an electrochemical storage device arranged in a vehicle and vehicle |
| CN112477549A (en) * | 2020-11-23 | 2021-03-12 | 艾泰斯热系统研发（上海）有限公司 | Cooling liquid cooling heat source switching device of multi-load heat pump system |
| CN112467246A (en) * | 2020-11-25 | 2021-03-09 | 中国第一汽车股份有限公司 | Battery cooling system and battery cooling control method |
| WO2022143129A1 (en) * | 2020-12-29 | 2022-07-07 | 长城汽车股份有限公司 | Vehicle battery thermal management control method and apparatus, and vehicle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 Termination date: 20200517 |