CN208849039U - A kind of electric car liquid cooling battery system - Google Patents
A kind of electric car liquid cooling battery system Download PDFInfo
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- CN208849039U CN208849039U CN201821242162.6U CN201821242162U CN208849039U CN 208849039 U CN208849039 U CN 208849039U CN 201821242162 U CN201821242162 U CN 201821242162U CN 208849039 U CN208849039 U CN 208849039U
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- 238000001816 cooling Methods 0.000 title claims abstract description 78
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000005057 refrigeration Methods 0.000 claims abstract description 34
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000004378 air conditioning Methods 0.000 abstract description 7
- 238000007726 management method Methods 0.000 description 16
- 239000000178 monomer Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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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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- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model discloses a kind of electric car liquid cooling battery system, including entire car controller, the entire car controller is separately connected liquid cooling battery refrigeration cycle, cockpit refrigeration cycle and power battery heating/cold loop.Entire car controller determines the switch of solenoid valve S1, solenoid valve S2, electronic water pump, cooling blower according to the instruction of cockpit air-conditioning switch and battery management system demand operating condition in the utility model, determines compressor rotary speed demand or WPTC power demand according to battery water in-out port temperature, BMS demand operating condition and current vehicle speed；According to the pressure value of refrigerant pressure sensor and tri-state pressure switch state, judge whether close compressor and reports pressure fault, eliminate dedicated air-conditioner controller or battery thermal management controller, cost is saved, and the decoupling control for passing through cockpit refrigerating circuit and battery refrigerating circuit effectively balances the contradiction between cockpit comfort and power battery cooling.
Description
Technical field
The utility model belongs to Control of Electric Vehicles technical field, and in particular to a kind of electric car liquid cooling battery system.
Background technique
Current electric car mostly uses lithium ion battery, and the capacity of lithium ion battery and discharge capability and temperature have directly
Relationship.When the temperature is too low, the capacity of power battery can decline, if the use that can shorten power battery is recycled at low temperature
Service life；Using the performance that will affect power battery again, it may cause battery bulge when serious when the temperature is excessively high, be split up, even
Cause safety accident.In view of the use environment temperature of electric car is different, how to make power battery work in ideal temperature
Section becomes particularly important, and therefore, it is necessary to design a kind of heat management system for dynamic lithium battery.
With the promotion of power battery energy density and the increase of vehicle course continuation mileage demand, traditional power battery heat pipe
Reason system (natural cooling or air-cooled) has been unable to meet demand, and therefore, high-power power battery need to use liquid cooling scheme.
Patent CN201320113693.6 discloses a kind of cold and hot management system of cell water, and the patent is according to the temperature of battery core
Degree controls the operation of cooling circuit and heating circuit.But the patent does not monitor the temperature of cooling water, since the temperature of battery core passes
Sensor is often placed among battery modules, and coldplate is then usually connect with module casing, therefore, if only with the control of battery core temperature
Heating and cooling, be easy to cause cooling water temperature too high or too low, so as to cause mould group surface and center excessive temperature differentials, this temperature
Degree difference or impact will affect the service life of battery；In addition, the patent cooling circuit applied compression mechanism cold, it is cooling not provide battery
The influence that process freezes to cockpit.
Patent CN201110291208.X gives a kind of water-cooling system of power battery, by monitoring battery temperature, control
The switch of coolant circuit and refrigerant circuit processed, and compressor rotary speed is adjusted, reaching makes battery work in ideal humidity province
Between purpose.But the patent does not provide the heating circuit of battery, does not provide the processing method of battery modules excessive temperature differentials yet；
In that patent, for compressor rotary speed only there are two regulation stall, the precision that temperature is adjusted is limited；In addition, when cockpit refrigeration with
When battery cooling couple, the method for the patent is to give up the control of cockpit temperature, and the comfort level that will lead to compartment in this way is deteriorated.
Patent CN201710330486.9 gives a kind of intelligentized battery thermal management control method, by monitoring battery core
Mean temperature, the water in-out port temperature of battery case, control standby mode, water circulation model, refrigeration mode or heating mode
It opens, while adjusting compressor, water pump, rotation speed of fan, make battery work within the scope of ideal temperature.But in the patent
In, compressor rotary speed controls the influence for not considering compressor noise when low speed, does not also provide cockpit and cools down simultaneously with battery
When coupling influence；In addition, heating circuit, using three gear heating, temperature degree of regulation is limited.
Utility model content
The purpose of this utility model is that: above-mentioned deficiency in the prior art is solved, a kind of electric car liquid cooling electricity is provided
Battery operating temperature is controlled within the scope of ideal temperature, also has substantially no effect on the refrigeration effect of cockpit, together by cell system
When having evaded low speed compressor noise problem.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of electric car liquid cooling battery system, including entire car controller, the entire car controller are separately connected liquid cooling
Battery refrigeration cycle, cockpit refrigeration cycle and power battery heating/cold loop.
Further, above-mentioned liquid cooling battery refrigeration cycle includes the compressor, condenser, cooling wind being sequentially connected in series
Fan, tri-state pressure switch, refrigerant pressure sensor and solenoid valve S1, the solenoid valve S1 are connected with the compressor, institute
The signal input part of the signal output end of the tri-state pressure switch and refrigerant pressure sensor stated and the entire car controller connects
It connects, the signal input part of the solenoid valve S1, compressor and cooling fan are defeated with the signal of the entire car controller respectively
Outlet connection.
Further, above-mentioned cockpit refrigeration cycle includes the compressor, condenser, cooling wind being sequentially connected in series
Fan, tri-state pressure switch, solenoid valve S2 and evaporator, the evaporator are connected with the compressor, the tri-state pressure
The signal of the signal output end and the entire car controller of power switch and the evaporator temperature sensor in the evaporator
Input terminal connection, the signal input part of the solenoid valve S2, cooling fan and compressor respectively with the signal of entire car controller
Output end connection.
Further, above-mentioned power battery heating/cold loop includes the expansion tank being sequentially connected in series, electronic water pump, enters
Intake temperature sensor T2, battery pack, outlet temperature sensor T1 and water heating PTC and heat exchanger, the heat exchanger and
The expansion tank connection, the signal output end and vehicle of the water inlet temperature sensor and outlet temperature sensor
The signal input part of controller connects, the letter of the signal input part and entire car controller of the water heating PTC and electronic water pump
The connection of number output end.
Further, above-mentioned liquid cooling battery system further includes the anti-lock braking system for acquiring vehicle real-time speed
With the battery management system for detecting battery pack module temperature, the letter of the anti-lock braking system and battery management system
The signal input part of number output end and entire car controller connects.
By adopting the above-described technical solution, the beneficial effects of the utility model are:
The liquid cooling battery system of the utility model is by compressor, condenser, cooling fan, tri-state pressure switch, refrigerant pressure
Force snesor, solenoid valve S1, heat exchanger series connection are used as liquid cooling battery refrigeration cycle；Solenoid valve S2, evaporator, compressor,
Condenser, cooling fan, tri-state pressure switch form cockpit refrigeration cycle；And expansion tank, electronic water pump, water inlet
Temperature sensor T2, battery pack, outlet temperature sensor T1, water heating PTC and heat exchanger composition power battery hot/cold return
Road；Entire car controller determines solenoid valve S1, solenoid valve according to the instruction of cockpit air-conditioning switch and battery management system demand operating condition
S2, electronic water pump, cooling blower switch, according to battery water in-out port temperature, BMS demand operating condition and current vehicle speed determine compress
Machine speed demand or WPTC power demand；According to the pressure value of refrigerant pressure sensor and tri-state pressure switch state, judgement is
No close compressor simultaneously reports pressure fault.
The battery liquid cooling loop of the utility model is simple, versatile, can be widely applied to electric automobile power battery
Heat management completes the control to cockpit refrigerating circuit and battery refrigerating circuit by entire car controller, eliminates dedicated sky
Controller or battery thermal management controller are adjusted, has saved cost, and passes through cockpit refrigerating circuit and battery refrigerating circuit
Decoupling control effectively balances the contradiction between cockpit comfort and power battery cooling.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the battery liquid cooling system structural schematic diagram of the utility model.
Fig. 2 is the battery liquid cooling system operation principle schematic diagram of the utility model.
Fig. 3 is the liquid cooling battery-heated model flow diagram of the utility model.
Fig. 4 is refrigeration mode flow diagram when the liquid cooling battery air-conditioning of the utility model is opened.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Referring to attached drawing 1-4, specific description is done to the embodiments of the present invention.
A kind of electric car liquid cooling battery system, including entire car controller, the entire car controller are separately connected liquid cooling
Battery refrigeration cycle, cockpit refrigeration cycle and power battery heating/cold loop.
Further, above-mentioned liquid cooling battery refrigeration cycle includes the compressor, condenser, cooling wind being sequentially connected in series
Fan, tri-state pressure switch, refrigerant pressure sensor and solenoid valve S1, the solenoid valve S1 are connected with the compressor, institute
The signal input part of the signal output end of the tri-state pressure switch and refrigerant pressure sensor stated and the entire car controller connects
It connects, the signal input part of the solenoid valve S1, compressor and cooling fan are defeated with the signal of the entire car controller respectively
Outlet connection.
Further, above-mentioned cockpit refrigeration cycle includes the compressor, condenser, cooling wind being sequentially connected in series
Fan, tri-state pressure switch, solenoid valve S2 and evaporator, the evaporator are connected with the compressor, the tri-state pressure
The signal of the signal output end and the entire car controller of power switch and the evaporator temperature sensor in the evaporator
Input terminal connection, the signal input part of the solenoid valve S2, cooling fan and compressor respectively with the signal of entire car controller
Output end connection.
Further, above-mentioned power battery heating/cold loop includes the expansion tank being sequentially connected in series, electronic water pump, enters
Intake temperature sensor T2, battery pack, outlet temperature sensor T1 and water heating PTC and heat exchanger, the heat exchanger and
The expansion tank connection, the signal output end and vehicle of the water inlet temperature sensor and outlet temperature sensor
The signal input part of controller connects, the letter of the signal input part and entire car controller of the water heating PTC and electronic water pump
The connection of number output end.
Further, above-mentioned liquid cooling battery system further includes the anti-lock braking system for acquiring vehicle real-time speed
With the battery management system for detecting battery pack module temperature, the letter of the anti-lock braking system and battery management system
The signal input part of number output end and entire car controller connects.
A kind of electric car liquid cooling control method of battery-system, using above-mentioned electric car liquid cooling battery system, including
Following steps:
Step 1: default batteries monomer maximum temperature and monomer minimum temperature difference threshold △ T, heating threshold temperature
T1, heating threshold temperature T2, refrigeration threshold temperature T3 and refrigeration threshold temperature T4, further, above-mentioned heating threshold temperature
The value range of T1 and heating threshold temperature T2 are 5 DEG C≤T1 < T2≤25 DEG C, refrigeration threshold temperature T3 and refrigeration threshold temperature T4
Value range be 50 DEG C >=T3 > T4 >=30 DEG C.
Further, above-mentioned step one further includes establishing the mapping table of evaporator temperature and compressor rotary speed, establishes vehicle
The mapping table of speed and compressor maximum permissible speed；
Further, above-mentioned step one is further comprising the steps of:
Establish the table of water inlet temperature and water heating PTC demand power, water inlet temperature [Tp1,Tp2] correspond to water heating
PTC demand power [P1,P2], wherein Tp1>Tp2If water inlet temperature is less than Tp2, it is P that water, which heats PTC demand power,2If entering
Mouth of a river temperature is greater than Tp1, it is P that water, which heats PTC demand power,1, presetting water inlet temperature according to power battery attribute allows maximum value
Tpmax；
Establish water inlet temperature and compressor rotary speed required list, water inlet temperature [Tc1,Tc2] correspond to compressor request revolving speed
[N1,N2], wherein Tc1>Tc2If water inlet temperature is lower than Tc2, it is N2 that compressor, which requests revolving speed, if water inlet temperature is higher than
Tc1, it is N1 that compressor, which requests revolving speed,；Presetting water inlet temperature according to power battery attribute allows minimum value Tcmin；
Water inlet temperature and the table of compressor rotary speed request see the table below 1:
Table 1
Determine that compressor maximum permissible speed see the table below 2 according to speed:
Table 2
Step 2: battery management system acquires and judges battery pack temperature information, then sends corresponding operating condition to vehicle
Controller:
Further, in above-mentioned step two, if monomer maximum temperature and monomer minimum temperature difference are greater than △ T, battery
Management system sends water circulation model to entire car controller；
If monomer minimum temperature, lower than heating threshold temperature T1, battery management system sends heating condition to full-vehicle control
Device；
If monomer minimum temperature is higher than T2, standby mode is sent to entire car controller；
If monomer maximum temperature is higher than refrigeration threshold temperature T3, battery management system sends cooling condition to full-vehicle control
Device；
If monomer maximum temperature sends standby mode to entire car controller lower than refrigeration threshold temperature T4.
Step 3: entire car controller works in the corresponding circuit of operating conditions based on the received.
The step three is further comprising the steps of:
If entire car controller receives heating condition, electronic water pump is opened, then tables look-up to obtain water according to water inlet temperature
Heat the power request of PTC；When water inlet temperature reaches the maximum of T of permissionpmax, entire car controller by water heating PTC request
Power is reduced to zero and electronic water pump is maintained to work, until water inlet temperature is lower than Tp2, entire car controller be again turned on water heating
PTC simultaneously tables look-up to obtain WPTC demand power according to water inlet temperature, entire car controller by CAN bus control water heat PTC according to
Water heats the work of PTC demand power；
If entire car controller receives cooling condition, electronic water pump, solenoid valve S1 and cooling fan are successively opened, then
It is tabled look-up to obtain compressor rotating speed of target according to water inlet temperature；Allow minimum value when water inlet temperature reaches water inlet temperature
Tcmin, compressor request revolving speed is reduced to zero, closes solenoid valve S1 and simultaneously electronic water pump is maintained to work by entire car controller, until
Water inlet temperature is higher than Tc1, entire car controller again enable compressor, and according to water inlet temperature table look-up to obtain compressor target turn
Speed；
If entire car controller receives water circulation model, power battery heating/cold loop is started to work, until monomer most
High-temperature and monomer minimum temperature difference are less than (△ T-T□) electronic water pump, the T are closed afterwards□For return difference, T□Value model
It encloses for 2 DEG C < T□<6℃；
The step three further include:
If entire car controller receives cooling condition and detects that air-conditioning is not opened, electronic water pump, electromagnetism are successively opened
Then valve S1 and cooling fan table look-up to obtain compressor rotating speed of target according to water inlet temperature；When water inlet temperature reaches into water
Mouth temperature allows minimum value Tcmin, compressor request revolving speed is reduced to zero, closes solenoid valve S1 and simultaneously maintain electricity by entire car controller
Sub- pump working, until water inlet temperature is higher than Tc1, entire car controller enables compressor again, and is tabled look-up according to water inlet temperature
Obtain compressor rotating speed of target；
If entire car controller receives cooling condition and detects that air-conditioning is opened, successively opens solenoid valve S2 and cooling wind
Fan, then tables look-up to obtain compressor rotary speed N according to evaporator temperatureex；Entire car controller successively controls electronic water pump and electricity simultaneously
Magnet valve S1 unlatching, and table look-up to obtain compressor request revolving speed N according to water inlet temperaturex；Take Nex, NxIn the larger value as compressor
Final request revolving speed；Allow minimum value T when water inlet temperature reaches water inlet temperaturecmin, entire car controller closing solenoid valve
S1 simultaneously maintains electronic water pump to work, until water inlet temperature is higher than Tc1After be again turned on solenoid valve S1.
The utility model determines the maximum speed of compressor according to speed, solves compressor noise of the vehicle in low speed
Problem.
By adopting the above-described technical solution, the beneficial effects of the utility model are:
The liquid cooling battery system of the utility model is by compressor, condenser, cooling fan, tri-state pressure switch, refrigerant pressure
Force snesor, solenoid valve S1, heat exchanger series connection are used as liquid cooling battery refrigeration cycle；Solenoid valve S2, evaporator, compressor,
Condenser, cooling fan, tri-state pressure switch form cockpit refrigeration cycle；And expansion tank, electronic water pump, water inlet
Temperature sensor T2, battery pack, outlet temperature sensor T1, water heating PTC and heat exchanger composition power battery hot/cold return
Road；Entire car controller determines solenoid valve S1, solenoid valve according to the instruction of cockpit air-conditioning switch and battery management system demand operating condition
S2, electronic water pump, cooling blower switch, according to battery water in-out port temperature, BMS demand operating condition and current vehicle speed determine compress
Machine speed demand or WPTC power demand；According to the pressure value of refrigerant pressure sensor and tri-state pressure switch state, judgement is
No close compressor simultaneously reports pressure fault.The utility model is completed by entire car controller to cockpit refrigerating circuit and battery
The control of refrigerating circuit eliminates dedicated air-conditioner controller or battery thermal management controller, has saved cost, and by driving
The decoupling control of cabin refrigerating circuit and battery refrigerating circuit is sailed, cockpit comfort and power battery cooling are effectively balanced
Between contradiction.
Primary heating, primary refrigeration in one embodiment of the utility model, for certain electronic vehicle liquid cooling battery
It is as follows with the process flow of primary refrigeration failure:
Fig. 1 and Fig. 2 respectively illustrates the structure diagram and functional block diagram of battery liquid cooling system in the utility model, Fig. 3, figure
4 are set forth the primary heating process of liquid cooling battery and a cooling flow.
For heating cycle, there is corresponding WPTC demand power [1, the 3] kW of water inlet temperature [50,35] DEG C；Water inlet highest
Allow 55 DEG C of temperature；
For cooling condition, there is corresponding compressor rotary speed [3000, the 1000] rpm of water inlet temperature [40,20] DEG C；Water inlet
10 DEG C of minimum permissible temperature；
Evaporator and compressor rotary speed relationship:
Speed and compressor maximum allowable speed relationship:
Certain heating embodiment is provided, steps are as follows for specific execution:
A. in north of china in winter, driver opens key, and it is -8 DEG C that BMS, which acquires battery cell minimum temperature, lower than heating door
5 DEG C of temperature of limit, then BMS sends heating condition to VCU.
B. BMS heating condition is received, VCU carries out control as follows:
VCU first opens electronic water pump, and then acquiring water inlet temperature is -6 DEG C, tables look-up to obtain WPTC request power 3kW, hair
Give the power request to WPTC, when water inlet temperature reaches 55 DEG C, WPTC request power is reduced to zero by VCU, and maintains electronics
Pump working, when water inlet temperature is lower than 35 DEG C, VCU can be again turned on WPTC, and send demand power 3kW to WPTC, pass through
12 heat cycles, single battery minimum temperature reach 20 DEG C, then BMS sends standby mode to VCU, and then VCU is reduced
WPTC demand power stops pump working to zero；
The embodiment of certain refrigeration is provided, steps are as follows for specific execution:
During the broiling summer, a. driver opens key and drives a vehicle, and opens air-conditioning, and VCU detects evaporator temperature at this time
Degree be 10 DEG C, according to the temperature table look-up compressor rotary speed request be 5000rpm；It is 45km/h that ABS, which acquires current vehicle speed, is tabled look-up
Obtaining currently allows highest compressor rotary speed for 4000rpm, therefore the successive opens solenoid valve S2 of VCU, cooling fan, and sends
4000rpm revolving speed is requested to compressor.
B. at this moment, it is 45 DEG C that BMS, which acquires battery highest monomer temperature, therefore sends refrigeration mode to VCU.VCU receives BMS
Refrigeration mode first opens electronic water pump, is then turned on solenoid valve S1, and acquiring water inlet temperature value at this time is 30 DEG C, tables look-up to obtain
Compressor rotating speed of target is 2000rpm, takes maximum with current compressor revolving speed 4000rpm, therefore compressor request revolving speed is not
Become.After running a period of time, water inlet temperature is reduced to 10 DEG C, then VCU will close solenoid valve S1, and electronic water pump is maintained to continue
Work, until water inlet temperature is higher than 40 DEG C, VCU can obtain compressor rotary speed again according to water inlet temperature difference table and request, and with
Current compressor revolving speed takes maximum to request as compressor rotating speed of target, and by 10 refrigeration cycle, batteries monomer is minimum
Temperature is reduced to 30 DEG C, then BMS sends standby mode and receives the operating condition to VCU, VCU, will close solenoid valve S1, and stop electronics
Pump operation.
The troubleshooting embodiment of certain process of refrigerastion is provided, steps are as follows for specific execution:
A. certain, driver opens key driving, and since batteries monomer maximum temperature reaches 45 DEG C, BMS sends refrigeration
Operating condition tables look-up to obtain compressor request revolving speed according to water inlet temperature to VCU, VCU, and VCU successively opens electronic water pump, solenoid valve
S1, cooling fan, and request revolving speed is sent to compressor.After running a period of time, VCU collects refrigerant pressure value and reaches
1.9Mpa exceeds allowed band, then VCU close compressor, solenoid valve S1 and electronic water pump, and delay 10S closes cooling fan,
And report the excessively high failure of refrigerant pressure to instrument.
Claims (5)
1. a kind of electric car liquid cooling battery system, it is characterised in that: including entire car controller, the entire car controller difference
Connect liquid cooling battery refrigeration cycle, cockpit refrigeration cycle and power battery heating/cold loop.
2. a kind of electric car liquid cooling battery system according to claim 1, it is characterised in that: the liquid cooling battery system
SAPMAC method circuit include the compressor being sequentially connected in series, condenser, cooling fan, tri-state pressure switch, refrigerant pressure sensor and
Solenoid valve S1, the solenoid valve S1 are connected with the compressor, the tri-state pressure switch and refrigerant pressure sensor
Signal output end connect with the signal input part of the entire car controller, solenoid valve S1, compressor and the cooling wind
The signal input part of fan is connected with the signal output end of the entire car controller respectively.
3. a kind of electric car liquid cooling battery system according to claim 1 or 2, it is characterised in that: the cockpit
Refrigeration cycle includes the compressor being sequentially connected in series, condenser, cooling fan, tri-state pressure switch, solenoid valve S2 and evaporation
Device, the evaporator are connected with the compressor, the evaporator in the tri-state pressure switch and the evaporator
The signal output end of temperature sensor is connect with the signal input part of the entire car controller, the solenoid valve S2, cooling
The signal input part of fan and compressor is connected with the signal output end of entire car controller respectively.
4. a kind of electric car liquid cooling battery system according to claim 1 or 2, it is characterised in that: the power electric
Pond heating/cold loop includes the expansion tank being sequentially connected in series, electronic water pump, water inlet temperature sensor T2, battery pack, water outlet
Temperature sensor T1 and water heating PTC and heat exchanger, the heat exchanger are connected with the expansion tank, the water inlet
The signal input part of the signal output end and entire car controller of temperature sensor and outlet temperature sensor connects, the water
The signal output end of the signal input part and entire car controller that heat PTC and electronic water pump connects.
5. a kind of electric car liquid cooling battery system according to claim 1, it is characterised in that: the liquid cooling battery system
System further includes the anti-lock braking system for acquiring vehicle real-time speed and the cell tube for detecting battery pack module temperature
Reason system, the signal input part of the signal output end and entire car controller of the anti-lock braking system and battery management system
Connection.
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| CN201821242162.6U CN208849039U (en) | 2018-08-02 | 2018-08-02 | A kind of electric car liquid cooling battery system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254165A (en) * | 2019-06-12 | 2019-09-20 | 安徽江淮松芝空调有限公司 | A kind of heat pump and battery liquid cooling system |
| CN111416176A (en) * | 2020-04-07 | 2020-07-14 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation system and method |
| CN112186301A (en) * | 2020-09-29 | 2021-01-05 | 安徽江淮汽车集团股份有限公司 | Temperature control method of liquid-cooled battery pack, electric vehicle and readable storage medium |
| WO2022105320A1 (en) * | 2020-11-17 | 2022-05-27 | 中山大学 | Power battery active thermal management system and control method |
-
2018
- 2018-08-02 CN CN201821242162.6U patent/CN208849039U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254165A (en) * | 2019-06-12 | 2019-09-20 | 安徽江淮松芝空调有限公司 | A kind of heat pump and battery liquid cooling system |
| CN111416176A (en) * | 2020-04-07 | 2020-07-14 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation system and method |
| CN111416176B (en) * | 2020-04-07 | 2021-07-27 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation method |
| CN112186301A (en) * | 2020-09-29 | 2021-01-05 | 安徽江淮汽车集团股份有限公司 | Temperature control method of liquid-cooled battery pack, electric vehicle and readable storage medium |
| WO2022105320A1 (en) * | 2020-11-17 | 2022-05-27 | 中山大学 | Power battery active thermal management system and control method |
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