CN104477024A - BEV (battery electric vehicle) thermal management system and cooling liquid filling method thereof - Google Patents
BEV (battery electric vehicle) thermal management system and cooling liquid filling method thereof Download PDFInfo
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- CN104477024A CN104477024A CN201410750802.4A CN201410750802A CN104477024A CN 104477024 A CN104477024 A CN 104477024A CN 201410750802 A CN201410750802 A CN 201410750802A CN 104477024 A CN104477024 A CN 104477024A
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- 239000000110 cooling liquid Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000012530 fluid Substances 0.000 claims description 84
- 239000003507 refrigerant Substances 0.000 claims description 84
- 239000007788 liquid Substances 0.000 claims description 75
- 230000007423 decrease Effects 0.000 claims description 39
- 239000002826 coolant Substances 0.000 claims description 32
- 238000007872 degassing Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- Air-Conditioning For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention aims to provide a BEV (battery electric vehicle) thermal management system and a cooling liquid filling method thereof. The BEV thermal management system comprises an electric drive part thermal management sub-system and a passenger bin and battery thermal management sub-system. The electric drive part thermal management sub-system comprises a first overflow kettle, a first water pump, a radiator and an electric drive heat exchanging part, wherein one end of the radiator is connected with the first port of the electric drive heat exchanging part, the other end of the radiator is respectively connected with the first overflow kettle and the first port of the first water pump, and the second port of the electric drive heat exchanging part is respectively connected with the first overflow kettle and the second port of the first water pump. The BEV thermal management system and the cooling liquid filling method thereof have the advantages that effective thermal management of auto parts and accurate cooling liquid filling are achieved; the BEV thermal management system provides a good thermal management function for the electric drive part, a passenger bin and a battery, comfortableness of the passenger bin is guaranteed, and the electric drive part and the battery are enabled to be in an appropriate temperature range.
Description
Technical field
The invention belongs to new-energy automobile field, be related specifically to pure electric automobile heat management system and coolant injection method thereof.
Background technology
Cooling heat dissipation technology is one of core technology of vehicle assisted system, is to maintain the important technology that power, driving device normally work to ensure, how are its technical merit and real vehicle work condition state, will directly affect the realization of vehicle performance index.Along with the development of electronlmobil, the especially popularization of pure electric automobile, demonstration and masses are to the progressively acceptance level of electronlmobil, and the scope field that electronlmobil uses progressively expands.Because the temperature characterisitic of electrokinetic cell affects, the ideal working temperature of battery is between 10 DEG C ~ 40 DEG C, when ambient temperature is outside this range of temperatures, during no matter higher than maximum operating temperature or lower than minimum operating temperature, heat management system will be battery system cooling or heating, make battery system operation in desirable operating temperature.Therefore the heat management system of electronlmobil is that electronlmobil expands use region, makes it apply not by the essential condition of ambient temperature restriction.
Heat management system is one of important system of pure electric automobile performance management, refrigerant fluid is the indispensable component part of this system, because the pipeline of heat management system is comparatively complicated, therefore easy when annotating because of pipeline in the reason and causing of the air pocket problem such as cooling hypovolia of annotating.
Summary of the invention
The object of the invention is to propose a kind of pure electric automobile heat management system and coolant injection method thereof, to realize carrying out actv. heat management to automobile component and adding inject cooling liquid accurately.
Pure electric automobile heat management system of the present invention comprises driving member heat management subsystem, crew module, battery thermal management subsystem; Described driving member heat management subsystem is made up of the first overflow kettle, the first water pump, radiator, electric drive heat-exchanging part; One end of described radiator is connected with the first port of electric drive heat-exchanging part, the other end is connected with the first port of the first water pump and the first overflow kettle respectively, and the second port of described electric drive heat-exchanging part is connected with the second port of the first water pump and the first overflow kettle respectively.
The principle of driving member heat management subsystem is as follows: refrigerant fluid is under the driving of the first water pump, flow through the first water pump, electric drive heat-exchanging part, radiator successively, thus the carry heat of electric drive heat-exchanging part is dissipated to radiator place, reduce the temperature of driving member.Above-mentioned electric drive heat-exchanging part is made up of the heat exchange pipe surrounding driving member, repeats no more herein.
For convenience of observing refrigerant fluid situation, above-mentioned first overflow kettle is provided with MAX, MIN liquid level cue mark.
Described crew module, battery thermal management subsystem by comprise evaporator, heating core HVAC device, be positioned at crew module place and be provided with crew module's pipeline of the second electromagnetic valve, air compressor, condenser, the first electromagnetic valve, the 3rd electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, the second water pump, the 3rd water pump, be provided with except the degasification pipeline of gas port, battery heat-exchanging part, temperature booster, the second overflow kettle are formed; Described air compressor, condenser, the first electromagnetic valve and evaporator connect successively and form a loop, and one end of described crew module's pipeline is connected with the contact of evaporator with air compressor, and the other end is connected with the contact of condenser with the first electromagnetic valve; Described one end of 3rd electromagnetic valve is connected with the first port of heating core, and the other end is connected with the first port of the second water pump, the first port of battery heat-exchanging part, the first port of temperature booster respectively; Second port of described second water pump is successively by being connected with the second port of battery heat-exchanging part after the 4th electromagnetic valve, degasification pipeline; Second port of described battery heat-exchanging part is connected by second port of the 5th electromagnetic valve with the 3rd water pump, and described first port of the 3rd water pump is connected with the second port of temperature booster; Second port of described heating core is connected with the second port of the 3rd water pump by the second overflow kettle; Heat-exchanging part is provided with between described crew module's pipeline and degasification pipeline.
The heat management principle of crew module is as follows: 1, crew module's heating: refrigerant fluid, under the driving of the 3rd water pump, flows through the 3rd water pump, temperature booster, the 3rd electromagnetic valve, heating core successively, thus by the carry heat of temperature booster to heating core place, is crew module's heating; 2, crew module's cooling: refrigerant fluid flows through air compressor, condenser, evaporator successively, thus is taken away by the heat of crew module (namely traditional air conditioner refrigerating mode).
Battery thermal management principle is as follows: 1, heating of battery: refrigerant fluid is under the driving of the 3rd water pump, flow through the 3rd water pump, temperature booster, battery heat-exchanging part, the 5th electromagnetic valve successively, thus by the carry heat of temperature booster to battery heat-exchanging part place, be heating of battery; 2, battery cooling: refrigerant fluid comprises two loops, a loop flows through air compressor, condenser, passenger cabin pipeline successively, another loop flows through the second water pump, the 4th electromagnetic valve, degasification pipeline, battery heat-exchanging part successively, and crew module's pipeline is by heat-exchanging part and degasification pipeline heat-shift, so just by the carry heat at battery heat-exchanging part place to condenser, thus battery can be cooled.
For convenience of observing refrigerant fluid situation, described second overflow kettle is provided with MAX, MIN liquid level cue mark.
The coolant injection method of pure electric automobile heat management system of the present invention comprises the coolant injection of the coolant injection of driving member heat management subsystem and crew module, battery thermal management subsystem, and wherein the coolant injection of driving member heat management subsystem comprises the steps:
A: the filler opening to the first overflow kettle slowly adds refrigerant fluid, until refrigerant fluid arrives the MAX upper limit of the first overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if the first overflow kettle cooling-liquid level declines, continuing to add refrigerant fluid to MAX line, if cooling-liquid level does not decline stop filling;
B: open the first water pump and make coolant flow degasification, until close the first water pump when the liquid level of the first overflow kettle does not decline, observes liquid level: if liquid level drops between MAX and MIN, then need not add refrigerant fluid; If liquid level drops to below MIN, the filler opening to the first overflow kettle slowly adds refrigerant fluid until the first overflow kettle liquid level is between MAX and MIN; Stop adding inject cooling liquid and leave standstill one minute, if liquid level declines, continuing to add between refrigerant fluid to MAX and MIN, if liquid level does not decline, annotated.
The coolant injection of crew module, battery thermal management subsystem comprises the steps:
C: close the first electromagnetic valve, the second electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, keeps the 3rd electromagnetic valve to open; Filler opening to the second overflow kettle slowly adds refrigerant fluid, until refrigerant fluid arrives the MAX upper limit of the second overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if cooling-liquid level declines, continuing to add refrigerant fluid to MAX line, if cooling-liquid level does not decline stop filling;
D: open the 3rd water pump and make coolant flow degasification, until close the 3rd water pump when the liquid level of the second overflow kettle does not decline; Filler opening to the second overflow kettle slowly adds refrigerant fluid until the second overflow kettle liquid level arrives MAX line; Stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continuing to add refrigerant fluid to MAX line, if liquid level does not decline, performing E step;
E: open the first electromagnetic valve and the second electromagnetic valve, make refrigerant fluid natural flow, observe the liquid level of the second overflow kettle, until when the refrigerant fluid in the second overflow kettle does not decline, the filler opening to the second overflow kettle slowly adds refrigerant fluid, until refrigerant fluid arrives the MAX upper limit of the second overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continue to add refrigerant fluid to MAX line, if liquid level does not decline, stop filling, perform F step;
F: open the second water pump and the 4th electromagnetic valve, and open battery heat-exchanging part except gas port, make coolant flow degasification, until close the second water pump when the liquid level of the second overflow kettle does not decline, filler opening to the second overflow kettle slowly adds refrigerant fluid until the liquid level of the second overflow kettle arrives MAX line, stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continuing to add refrigerant fluid to MAX line, if liquid level does not decline, performing G step;
G: open the 5th electromagnetic valve, the second water pump and the 3rd water pump, keep battery heat-exchanging part except gas port be opening, make coolant flow degasification, until close the second water pump and the 3rd water pump when the liquid level of the second overflow kettle does not decline; If the liquid level of the second overflow kettle still between MAX and MIN, then need not add refrigerant fluid; If liquid level drops to below MIN, the filler opening to the second overflow kettle slowly adds refrigerant fluid, until the liquid level of the second overflow kettle is between MAX and MIN, stops adding inject cooling liquid and leaves standstill one minute; If the decline of the second overflow kettle, continue to add between refrigerant fluid to MAX and MIN, if liquid level does not decline, that closes battery heat-exchanging part removes gas port, and filling completes.
Each water pump above-mentioned is after cut out, and refrigerant fluid still can flow through water pump naturally, and just water pump no longer has guiding and drives the power of refrigerant fluid.After each closed electromagnetic valve above-mentioned, refrigerant fluid can be stoped to flow through.
Pure electric automobile heat management system of the present invention can provide good heat management function for driving member, crew module and battery, ensure crew module comfortable and make driving member, battery is in applicable range of temperatures, thus ensure the normal work of driving member, battery, the coolant injection method of pure electric automobile heat management system of the present invention can realize adding inject cooling liquid accurately, for the normal operation of heat management system is given security.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of pure electric automobile heat management system of the present invention.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and principle of work etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
The pure electric automobile heat management system of the present embodiment comprises driving member heat management subsystem, crew module, battery thermal management subsystem; Described driving member heat management subsystem is made up of the first overflow kettle, the first water pump, radiator, electric drive heat-exchanging part; One end of described radiator is connected with the first port of electric drive heat-exchanging part, the other end is connected with the first port of the first water pump and the first overflow kettle respectively, and the second port of described electric drive heat-exchanging part is connected with the second port of the first water pump and the first overflow kettle respectively.
The principle of driving member heat management subsystem is as follows: refrigerant fluid is under the driving of the first water pump, flow through the first water pump, electric drive heat-exchanging part, radiator successively, thus the carry heat of electric drive heat-exchanging part is dissipated to radiator place, reduce the temperature of driving member.Above-mentioned electric drive heat-exchanging part is made up of the heat exchange pipe surrounding driving member, repeats no more herein.
For convenience of observing refrigerant fluid situation, above-mentioned first overflow kettle is provided with MAX, MIN liquid level cue mark.
Described crew module, battery thermal management subsystem by comprise evaporator, heating core HVAC device, be positioned at crew module place and be provided with crew module's pipeline of the second electromagnetic valve, air compressor, condenser, the first electromagnetic valve, the 3rd electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, the second water pump, the 3rd water pump, be provided with except the degasification pipeline of gas port, battery heat-exchanging part, temperature booster, the second overflow kettle are formed; Described air compressor, condenser, the first electromagnetic valve and evaporator connect successively and form a loop, and one end of described crew module's pipeline is connected with the contact of evaporator with air compressor, and the other end is connected with the contact of condenser with the first electromagnetic valve; Described one end of 3rd electromagnetic valve is connected with the first port of heating core, and the other end is connected with the first port of the second water pump, the first port of battery heat-exchanging part, the first port of temperature booster respectively; Second port of described second water pump is successively by being connected with the second port of battery heat-exchanging part after the 4th electromagnetic valve, degasification pipeline; Second port of described battery heat-exchanging part is connected by second port of the 5th electromagnetic valve with the 3rd water pump, and described first port of the 3rd water pump is connected with the second port of temperature booster; Second port of described heating core is connected with the second port of the 3rd water pump by the second overflow kettle; Heat-exchanging part is provided with between described crew module's pipeline and degasification pipeline.
The heat management principle of crew module is as follows: 1, crew module's heating: refrigerant fluid, under the driving of the 3rd water pump, flows through the 3rd water pump, temperature booster, the 3rd electromagnetic valve, heating core successively, thus by the carry heat of temperature booster to heating core place, is crew module's heating; 2, crew module's cooling: refrigerant fluid flows through air compressor, condenser, evaporator successively, thus is taken away by the heat of crew module (namely traditional air conditioner refrigerating mode).
Battery thermal management principle is as follows: 1, heating of battery: refrigerant fluid is under the driving of the 3rd water pump, flow through the 3rd water pump, temperature booster, battery heat-exchanging part, the 5th electromagnetic valve successively, thus by the carry heat of temperature booster to battery heat-exchanging part place, be heating of battery; 2, battery cooling: refrigerant fluid comprises two loops, a loop flows through air compressor, condenser, passenger cabin pipeline successively, another loop flows through the second water pump, the 4th electromagnetic valve, degasification pipeline, battery heat-exchanging part successively, and crew module's pipeline is by heat-exchanging part and degasification pipeline heat-shift, so just by the carry heat at battery heat-exchanging part place to condenser, thus battery can be cooled.
For convenience of observing refrigerant fluid situation, described second overflow kettle is provided with MAX, MIN liquid level cue mark.
The coolant injection method of pure electric automobile heat management system of the present invention comprises the coolant injection of the coolant injection of driving member heat management subsystem and crew module, battery thermal management subsystem, and wherein the coolant injection of driving member heat management subsystem comprises the steps:
A: the filler opening to the first overflow kettle slowly adds refrigerant fluid with the speed of 1L/min, until refrigerant fluid arrives the MAX upper limit of the first overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if the first overflow kettle cooling-liquid level declines, continue to add refrigerant fluid to MAX line, if cooling-liquid level does not decline stop filling;
B: open the first water pump and make coolant flow degasification, until close the first water pump when the liquid level of the first overflow kettle does not decline, observes liquid level: if liquid level drops between MAX and MIN, then need not add refrigerant fluid; If liquid level drops to below MIN, the filler opening to the first overflow kettle slowly adds refrigerant fluid until the first overflow kettle liquid level is between MAX and MIN with the speed of 1L/min; Stop adding inject cooling liquid and leave standstill one minute, if liquid level declines, continuing to add between refrigerant fluid to MAX and MIN, if liquid level does not decline, annotated.
The coolant injection of crew module, battery thermal management subsystem comprises the steps:
C: close the first electromagnetic valve, the second electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, keeps the 3rd electromagnetic valve to open; Filler opening to the second overflow kettle slowly adds refrigerant fluid with the speed of 1L/min, until refrigerant fluid arrives the MAX upper limit of the second overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if cooling-liquid level declines, continuing to add refrigerant fluid to MAX line, if cooling-liquid level does not decline stop filling;
D: open the 3rd water pump and make coolant flow degasification, until close the 3rd water pump when the liquid level of the second overflow kettle does not decline; Filler opening to the second overflow kettle slowly adds refrigerant fluid until the second overflow kettle liquid level arrives MAX line with the speed of 1L/min; Stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continuing to add refrigerant fluid to MAX line, if liquid level does not decline, performing E step;
E: open the first electromagnetic valve and the second electromagnetic valve, make refrigerant fluid natural flow, observe the liquid level of the second overflow kettle, until when the refrigerant fluid in the second overflow kettle does not decline, the filler opening to the second overflow kettle slowly adds refrigerant fluid with the speed of 1L/min, until refrigerant fluid arrives the MAX upper limit of the second overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continue to add refrigerant fluid to MAX line, if liquid level does not decline, stop filling, perform F step;
F: open the second water pump and the 4th electromagnetic valve, and open battery heat-exchanging part except gas port, make coolant flow degasification, until close the second water pump when the liquid level of the second overflow kettle does not decline, filler opening to the second overflow kettle slowly adds refrigerant fluid until the liquid level of the second overflow kettle arrives MAX line with the speed of 1L/min, stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continuing to add refrigerant fluid to MAX line, if liquid level does not decline, performing G step;
G: open the 5th electromagnetic valve, the second water pump and the 3rd water pump, keep battery heat-exchanging part except gas port be opening, make coolant flow degasification, until close the second water pump and the 3rd water pump when the liquid level of the second overflow kettle does not decline; If the liquid level of the second overflow kettle still between MAX and MIN, then need not add refrigerant fluid; If liquid level drops to below MIN, the filler opening to the second overflow kettle slowly adds refrigerant fluid with the speed of 1L/min, until the liquid level of the second overflow kettle is between MAX and MIN, stops adding inject cooling liquid and leaves standstill one minute; If the decline of the second overflow kettle, continue to add between refrigerant fluid to MAX and MIN, if liquid level does not decline, that closes battery heat-exchanging part removes gas port, and filling completes.
Each water pump above-mentioned is after cut out, and refrigerant fluid still can flow through water pump naturally, and just water pump no longer has guiding and drives the power of refrigerant fluid.After each closed electromagnetic valve above-mentioned, refrigerant fluid can be stoped to flow through.
Claims (6)
1. a pure electric automobile heat management system, is characterized in that comprising driving member heat management subsystem, crew module, battery thermal management subsystem; Described driving member heat management subsystem is made up of the first overflow kettle, the first water pump, radiator, electric drive heat-exchanging part; One end of described radiator is connected with the first port of electric drive heat-exchanging part, the other end is connected with the first port of the first water pump and the first overflow kettle respectively, and the second port of described electric drive heat-exchanging part is connected with the second port of the first water pump and the first overflow kettle respectively.
2. pure electric automobile heat management system according to claim 1, is characterized in that described first overflow kettle is provided with MAX, MIN liquid level cue mark.
3. pure electric automobile heat management system according to claim 1, it is characterized in that described crew module, battery thermal management subsystem by comprise evaporator, heating core HVAC device, be positioned at crew module place and be provided with crew module's pipeline of the second electromagnetic valve, air compressor, condenser, the first electromagnetic valve, the 3rd electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, the second water pump, the 3rd water pump, be provided with except the degasification pipeline of gas port, battery heat-exchanging part, temperature booster, the second overflow kettle are formed; Described air compressor, condenser, the first electromagnetic valve and evaporator connect successively and form a loop, and one end of described crew module's pipeline is connected with the contact of evaporator with air compressor, and the other end is connected with the contact of condenser with the first electromagnetic valve; Described one end of 3rd electromagnetic valve is connected with the first port of heating core, and the other end is connected with the first port of the second water pump, the first port of battery heat-exchanging part, the first port of temperature booster respectively; Second port of described second water pump is successively by being connected with the second port of battery heat-exchanging part after the 4th electromagnetic valve, degasification pipeline; Second port of described battery heat-exchanging part is connected by second port of the 5th electromagnetic valve with the 3rd water pump, and described first port of the 3rd water pump is connected with the second port of temperature booster; Second port of described heating core is connected with the second port of the 3rd water pump by the second overflow kettle; Heat-exchanging part is provided with between described crew module's pipeline and degasification pipeline.
4. pure electric automobile heat management system according to claim 3, is characterized in that described second overflow kettle is provided with MAX, MIN liquid level cue mark.
5. the coolant injection method of pure electric automobile heat management system according to claim 1, comprise the coolant injection of the coolant injection of driving member heat management subsystem, crew module, battery thermal management subsystem, it is characterized in that the coolant injection of driving member heat management subsystem comprises the steps:
A: the filler opening to the first overflow kettle slowly adds refrigerant fluid, until refrigerant fluid arrives the MAX upper limit of the first overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if cooling-liquid level declines, continuing to add refrigerant fluid to MAX line, if cooling-liquid level does not decline stop filling;
B: open the first water pump and make coolant flow degasification, until close the first water pump when the liquid level of the first overflow kettle does not decline, observes liquid level: if liquid level drops between MAX and MIN, then need not add refrigerant fluid; If liquid level drops to below MIN, the filler opening to the first overflow kettle slowly adds refrigerant fluid until the first overflow kettle liquid level is between MAX and MIN; Stop adding inject cooling liquid and leave standstill one minute, if liquid level declines, continuing to add between refrigerant fluid to MAX and MIN, if liquid level does not decline, annotated.
6. the coolant injection method of pure electric automobile heat management system according to claim 5, is characterized in that crew module, the coolant injection of battery thermal management subsystem comprises the steps:
C: close the first electromagnetic valve, the second electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, keeps the 3rd electromagnetic valve to open; Filler opening to the second overflow kettle slowly adds refrigerant fluid, until refrigerant fluid arrives the MAX upper limit of the second overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if cooling-liquid level declines, continuing to add refrigerant fluid to MAX line, if cooling-liquid level does not decline stop filling;
D: open the 3rd water pump and make coolant flow degasification, until close the 3rd water pump when the liquid level of the second overflow kettle does not decline; Filler opening to the second overflow kettle slowly adds refrigerant fluid until the second overflow kettle liquid level arrives MAX line; Stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continuing to add refrigerant fluid to MAX line, if liquid level does not decline, performing E step;
E: open the first electromagnetic valve and the second electromagnetic valve, make refrigerant fluid natural flow, observe the liquid level of the second overflow kettle, until when the refrigerant fluid in the second overflow kettle does not decline, the filler opening to the second overflow kettle slowly adds refrigerant fluid, until refrigerant fluid arrives the MAX upper limit of the second overflow kettle, stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continue to add refrigerant fluid to MAX line, if liquid level does not decline, stop filling, perform F step;
F: open the second water pump and the 4th electromagnetic valve, and open battery heat-exchanging part except gas port, make coolant flow degasification, until close the second water pump when the liquid level of the second overflow kettle does not decline, filler opening to the second overflow kettle slowly adds refrigerant fluid until the liquid level of the second overflow kettle arrives MAX line, stop adding inject cooling liquid and leave standstill one minute, if the liquid level of the second overflow kettle declines, continuing to add refrigerant fluid to MAX line, if liquid level does not decline, performing G step;
G: open the 5th electromagnetic valve, the second water pump and the 3rd water pump, keep battery heat-exchanging part except gas port be opening, make coolant flow degasification, until close the second water pump and the 3rd water pump when the liquid level of the second overflow kettle does not decline; If the liquid level of the second overflow kettle still between MAX and MIN, then need not add refrigerant fluid; If liquid level drops to below MIN, the filler opening to the second overflow kettle slowly adds refrigerant fluid, until the liquid level of the second overflow kettle is between MAX and MIN, stops adding inject cooling liquid and leaves standstill one minute; If the decline of the second overflow kettle, continue to add between refrigerant fluid to MAX and MIN, if liquid level does not decline, that closes battery heat-exchanging part removes gas port, and filling completes.
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| CN107298001A (en) * | 2017-06-30 | 2017-10-27 | 浙江合众新能源汽车有限公司 | A kind of thermal management system of whole pure electric vehicle and control method |
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| CN107499086A (en) * | 2017-05-22 | 2017-12-22 | 宝沃汽车（中国）有限公司 | Vehicle heat management system and vehicle |
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| CN111980796A (en) * | 2020-09-02 | 2020-11-24 | 潍柴动力股份有限公司 | Cooling liquid filling control method and device |
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| CN112477699A (en) * | 2020-12-04 | 2021-03-12 | 安徽江淮汽车集团股份有限公司 | Thermal management system, control method and device, storage medium and vehicle |
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| CN113733844A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Integrated kettle assembly and thermal management system |
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