CN104477024B - 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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- CN104477024B CN104477024B CN201410750802.4A CN201410750802A CN104477024B CN 104477024 B CN104477024 B CN 104477024B CN 201410750802 A CN201410750802 A CN 201410750802A CN 104477024 B CN104477024 B CN 104477024B
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- 239000000110 cooling liquid Substances 0.000 title claims abstract description 19
- 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
- 239000002826 coolant Substances 0.000 claims description 129
- 239000007788 liquid Substances 0.000 claims description 81
- 230000007423 decrease Effects 0.000 claims description 39
- 238000007872 degassing Methods 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000006200 vaporizer Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004615 ingredient Substances 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, it is related specifically to pure electric automobile heat management system and its coolant injection
Method.
Background technology
Cooling heat dissipation technology is one of core technology of vehicle assisted system, is to maintain power, actuating device normal work
Important technology ensure, how are its technical merit and real vehicle work condition state, will directly affect the realization of vehicle performance index.With
From the point of view of the popularization of the development of electric automobile, especially pure electric automobile, demonstration and masses are to the progressively acceptance level of electric automobile,
The scope field that electric automobile uses progressively expands.Due to the temperature characterisitic impact of electrokinetic cell, the ideal working temperature of battery
Between 10 DEG C～40 DEG C, when ambient temperature is outside this temperature range, no matter higher than maximum operating temperature or less than minimum
During operating temperature, heat management system for battery system cooling or will heat, and make battery system operation in preferable operating temperature.Cause
The heat management system of this electric automobile is that electric automobile expands using region so as to apply the important bar not limited by ambient temperature
Part.
Heat management system is one of important system of pure electric automobile performance management, and coolant is that this system is indispensable
Ingredient, because the pipeline of heat management system is complex, therefore easily filling when because of pipeline in air pocket the reason
And lead to fill cooling hypovolia the problems such as.
Content of the invention
The purpose of the present invention is to propose to a kind of pure electric automobile heat management system and its coolant injection method, right to realize
Automobile component carries out effective heat management and accurate filling coolant.
The pure electric automobile heat management system of the present invention includes driving member heat management subsystem, crew module, battery heat
Management subsystem；Described driving member heat management subsystem is handed over by the first overflow kettle, the first water pump, radiator, electric drive heat
Change part to constitute；One end of described radiator is connected with the first port of electric drive heat-exchanging part, and the other end is respectively with first
The first port of water pump and the first overflow kettle connect, the second port of described electric drive heat-exchanging part respectively with the first water pump
Second port and the first overflow kettle connect.
The principle of driving member heat management subsystem is as follows: coolant, under the driving of the first water pump, flows through successively
One water pump, electric drive heat-exchanging part, radiator, thus the heat of electric drive heat-exchanging part is carried distribute to radiator
Fall, reduce the temperature of driving member.Above-mentioned electric drive heat-exchanging part is made up of the heat exchange pipe surrounding driving member,
Here is omitted.
For convenience of observing coolant situation, above-mentioned first overflow kettle is provided with max, min liquid level cue mark.
Described crew module, battery thermal management subsystem by comprise vaporizer, the hvac device of heating core, be located at crew module
And it is provided with crew module's pipeline of the second electromagnetic valve, air compressor, condenser, the first electromagnetic valve, the 3rd electromagnetic valve, the 4th electromagnetism
Valve, the 5th electromagnetic valve, the second water pump, the 3rd water pump, be provided with degasification pipeline except QI KOU, battery heat-exchanging part, heater,
Two overflow kettles are constituted；Described air compressor, condenser, the first electromagnetic valve and vaporizer are sequentially connected and constitute a loop,
One end of described crew module's pipeline is connected with the contact of air compressor and vaporizer, the other end and condenser and the first electromagnetic valve
Contact be connected；One end of described 3rd electromagnetic valve is connected with the first port of heating core, the other end respectively with the second water pump
First port, the first port of battery heat-exchanging part, the first port of heater are connected；The second port of described second water pump
Pass sequentially through the 4th electromagnetic valve, be connected with the second port of battery heat-exchanging part after degasification pipeline；Described battery heat exchange department
The second port of part is connected with the second port of the 3rd water pump by the 5th electromagnetic valve, the first port of described 3rd water pump with plus
The second port of hot device is connected；The second port of described heating core passes through the second port phase of the second overflow kettle and the 3rd water pump
Even；It is provided with heat-exchanging part between described crew module's pipeline and degasification pipeline.
The heat management principle of crew module is as follows: 1, crew module's heating: coolant, under the driving of the 3rd water pump, flows through successively
3rd water pump, heater, the 3rd electromagnetic valve, heating core, thus the heat of heater is carried to heating core, are that crew module adds
Heat；2nd, crew module's cooling: coolant flows through air compressor, condenser, vaporizer successively, thus the heat of crew module is taken away
(i.e. traditional air conditioner refrigerating mode).
Battery thermal management principle is as follows: 1, battery heating: coolant, under the driving of the 3rd water pump, flows through the 3rd water successively
Pump, heater, battery heat-exchanging part, the 5th electromagnetic valve, thus the heat of heater is carried to battery heat-exchanging part, be
Battery heats；2nd, battery cooling: coolant includes two loops, and a loop is to flow through air compressor, condenser successively, take advantage of
Member storekeeper road, another loop is to flow through the second water pump, the 4th electromagnetic valve, degasification pipeline, battery heat-exchanging part successively, and takes advantage of
Member cabin pipeline passes through heat-exchanging part and degasification pipeline heat-shift, thus can be by the heat band at battery heat-exchanging part
To condenser, thus battery is cooled down.
For convenience of observing coolant situation, described second overflow kettle is provided with max, min liquid level cue mark.
The coolant injection method of the pure electric automobile heat management system of the present invention includes driving member heat management divides and is
The coolant injection of system and the coolant injection of crew module, battery thermal management subsystem, wherein driving member heat management divide
The coolant injection of system comprises the steps:
A: the filler to the first overflow kettle slowly adds coolant, until coolant reaches the max upper limit of the first overflow kettle,
Stop filling coolant and stand one minute, if the first overflow kettle cooling-liquid level declines, continue plus coolant is to max line, if
Cooling-liquid level does not decline stopping filling；
B: open the first water pump and make coolant flow degasification, until closing first when the liquid level of the first overflow kettle does not decline
Water pump, observes liquid level: if liquid level drops between max and min, need not add coolant；If liquid level drops to below min,
Slowly add coolant to the filler of the first overflow kettle until the first overflow kettle liquid level is between max and min；Stop filling cold
But liquid stand one minute, if liquid level declines, continues to add coolant to max and min, if liquid level does not decline, fills
Complete.
Crew module, the coolant injection of battery thermal management subsystem comprise the steps:
C: close the first electromagnetic valve, the second electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, keep the 3rd electromagnetic valve to open；
Filler to the second overflow kettle slowly adds coolant, until coolant reaches the max upper limit of the second overflow kettle, stops filling cold
But liquid stand one minute, if cooling-liquid level declines, continues plus coolant is to max line, if cooling-liquid level does not decline stopping
Filling；
D: open the 3rd water pump and make coolant flow degasification, until closing the 3rd when the liquid level of the second overflow kettle does not decline
Water pump；Slowly add coolant to the filler of the second overflow kettle until the second overflow kettle liquid level reaches max line；Stop filling cooling
Liquid simultaneously stands one minute, if the liquid level of the second overflow kettle declines, continues to add coolant to max line, if liquid level does not decline, holds
Row step e；
E: open the first electromagnetic valve and the second electromagnetic valve so that coolant natural flow, observe the liquid level of the second overflow kettle,
The until when coolant in the second overflow kettle does not decline, the filler to the second overflow kettle slowly adds coolant, until coolant
Reach the max upper limit of the second overflow kettle, stop filling coolant and stand one minute, if the liquid level of the second overflow kettle declines, continue
Continue and add coolant to max line, if liquid level does not decline, stop filling, execute f step；
F: open the second water pump and the 4th electromagnetic valve, and open battery heat-exchanging part except QI KOU so that cooling liquor stream
Dynamic degasification, until closing the second water pump when the liquid level of the second overflow kettle does not decline, slowly plus cold to the filler of the second overflow kettle
But liquid, until the liquid level of the second overflow kettle reaches max line, stops filling coolant and stands one minute, if the liquid of the second overflow kettle
Face declines and then continues to add coolant to max line, if liquid level does not decline, executes g step；
G: open the 5th electromagnetic valve, the second water pump and the 3rd water pump, keep battery heat-exchanging part except QI KOU be to open
State is so that coolant flow degasification, until closing 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 coolant；If liquid level drops to below min, to second
The filler of overflow kettle slowly adds coolant, until the liquid level of the second overflow kettle is between max and min, stops filling cooling
Liquid simultaneously stands one minute；If the decline of the second overflow kettle, continue to add coolant to max and min, if liquid level does not decline
Then close battery heat-exchanging part except QI KOU, filling completes.
After closing, coolant still can flow through water pump to each water pump above-mentioned naturally, and simply water pump no longer has guiding and drives
The power of dynamic coolant.After each closed electromagnetic valve above-mentioned, you can stop coolant from flowing through.
The pure electric automobile heat management system of the present invention can provide good heat for driving member, crew module and battery
Management function is it is ensured that crew module comfortable and make driving member, battery be in suitable temperature range, thus ensureing electric drive
Part, the normal work of battery, the coolant injection method of the pure electric automobile heat management system of the present invention is capable of accurately
Filling coolant, the normal operation for heat management system provides and ensures.
Brief description
Fig. 1 is the principle schematic diagram. of the pure electric automobile heat management system of the present invention.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, for example involved to the specific embodiment of the present invention is each
Mutual alignment between the shape of component, construction, each several part and annexation, the effect of each several part and operation principle etc. are made into one
The detailed description of step.
Embodiment 1:
The pure electric automobile heat management system of the present embodiment includes driving member heat management subsystem, crew module, battery
Heat management subsystem；Described driving member heat management subsystem is by the first overflow kettle, the first water pump, radiator, electric drive heat
Replacement part is constituted；One end of described radiator is connected with the first port of electric drive heat-exchanging part, and the other end is respectively with
The first port of one water pump and the first overflow kettle connect, the second port of described electric drive heat-exchanging part respectively with the first water pump
Second port and the first overflow kettle connect.
The principle of driving member heat management subsystem is as follows: coolant, under the driving of the first water pump, flows through successively
One water pump, electric drive heat-exchanging part, radiator, thus the heat of electric drive heat-exchanging part is carried distribute to radiator
Fall, reduce the temperature of driving member.Above-mentioned electric drive heat-exchanging part is made up of the heat exchange pipe surrounding driving member,
Here is omitted.
For convenience of observing coolant situation, above-mentioned first overflow kettle is provided with max, min liquid level cue mark.
Described crew module, battery thermal management subsystem by comprise vaporizer, the hvac device of heating core, be located at crew module
And it is provided with crew module's pipeline of the second electromagnetic valve, air compressor, condenser, the first electromagnetic valve, the 3rd electromagnetic valve, the 4th electromagnetism
Valve, the 5th electromagnetic valve, the second water pump, the 3rd water pump, be provided with degasification pipeline except QI KOU, battery heat-exchanging part, heater,
Two overflow kettles are constituted；Described air compressor, condenser, the first electromagnetic valve and vaporizer are sequentially connected and constitute a loop,
One end of described crew module's pipeline is connected with the contact of air compressor and vaporizer, the other end and condenser and the first electromagnetic valve
Contact be connected；One end of described 3rd electromagnetic valve is connected with the first port of heating core, the other end respectively with the second water pump
First port, the first port of battery heat-exchanging part, the first port of heater are connected；The second port of described second water pump
Pass sequentially through the 4th electromagnetic valve, be connected with the second port of battery heat-exchanging part after degasification pipeline；Described battery heat exchange department
The second port of part is connected with the second port of the 3rd water pump by the 5th electromagnetic valve, the first port of described 3rd water pump with plus
The second port of hot device is connected；The second port of described heating core passes through the second port phase of the second overflow kettle and the 3rd water pump
Even；It is provided with heat-exchanging part between described crew module's pipeline and degasification pipeline.
The heat management principle of crew module is as follows: 1, crew module's heating: coolant, under the driving of the 3rd water pump, flows through successively
3rd water pump, heater, the 3rd electromagnetic valve, heating core, thus the heat of heater is carried to heating core, are that crew module adds
Heat；2nd, crew module's cooling: coolant flows through air compressor, condenser, vaporizer successively, thus the heat of crew module is taken away
(i.e. traditional air conditioner refrigerating mode).
Battery thermal management principle is as follows: 1, battery heating: coolant, under the driving of the 3rd water pump, flows through the 3rd water successively
Pump, heater, battery heat-exchanging part, the 5th electromagnetic valve, thus the heat of heater is carried to battery heat-exchanging part, be
Battery heats；2nd, battery cooling: coolant includes two loops, and a loop is to flow through air compressor, condenser successively, take advantage of
Member storekeeper road, another loop is to flow through the second water pump, the 4th electromagnetic valve, degasification pipeline, battery heat-exchanging part successively, and takes advantage of
Member cabin pipeline passes through heat-exchanging part and degasification pipeline heat-shift, thus can be by the heat band at battery heat-exchanging part
To condenser, thus battery is cooled down.
For convenience of observing coolant situation, described second overflow kettle is provided with max, min liquid level cue mark.
The coolant injection method of the pure electric automobile heat management system of the present invention includes driving member heat management divides and is
The coolant injection of system and the coolant injection of crew module, battery thermal management subsystem, wherein driving member heat management divide
The coolant injection of system comprises the steps:
A: the filler to the first overflow kettle slowly adds coolant with the speed of 1l/min, until coolant reaches first overflow
The max upper limit of stream kettle, stops filling coolant and stands one minute, if the first overflow kettle cooling-liquid level declines, continues plus cold
But liquid is to max line, if cooling-liquid level does not decline stopping filling；
B: open the first water pump and make coolant flow degasification, until closing first when the liquid level of the first overflow kettle does not decline
Water pump, observes liquid level: if liquid level drops between max and min, need not add coolant；If liquid level drops to below min,
To the filler of the first overflow kettle, coolant is slowly added until the first overflow kettle liquid level is in max and min with the speed of 1l/min
Between；Stop filling coolant and stand one minute, if liquid level declines, continue to add coolant to max and min, if liquid
Face does not decline, and filling completes.
Crew module, the coolant injection of battery thermal management subsystem comprise the steps:
C: close the first electromagnetic valve, the second electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, keep the 3rd electromagnetic valve to open；
Filler to the second overflow kettle slowly adds coolant with the speed of 1l/min, until coolant reaches the max of the second overflow kettle
The upper limit, stops filling coolant and stands one minute, if cooling-liquid level declines, continues plus coolant is to max line, if cooling
Liquid liquid level does not decline stopping filling；
D: open the 3rd water pump and make coolant flow degasification, until closing the 3rd when the liquid level of the second overflow kettle does not decline
Water pump；Coolant is slowly added with the speed of 1l/min until the second overflow kettle liquid level reaches max to the filler of the second overflow kettle
Line；Stop filling coolant and stand one minute, if the liquid level of the second overflow kettle declines, continue to add coolant to max line,
If liquid level does not decline, execute step e；
E: open the first electromagnetic valve and the second electromagnetic valve so that coolant natural flow, observe the liquid level of the second overflow kettle,
Until when the coolant in the second overflow kettle does not decline, the filler to the second overflow kettle slowly adds cooling with the speed of 1l/min
Liquid, until coolant reaches the max upper limit of the second overflow kettle, stops filling coolant and stands one minute, if the second overflow kettle
Liquid level decline then continue to add coolant to max line, if liquid level does not decline, stop filling, execution f step；
F: open the second water pump and the 4th electromagnetic valve, and open battery heat-exchanging part except QI KOU so that cooling liquor stream
Dynamic degasification, until closing the second water pump when the liquid level of the second overflow kettle does not decline, to the second overflow kettle filler with 1l/min
Speed slowly add coolant until the liquid level of the second overflow kettle reaches max line, stop filling coolant and simultaneously stand one minute, if
The liquid level of the second overflow kettle declines and then continues to add coolant to max line, if liquid level does not decline, executes g step；
G: open the 5th electromagnetic valve, the second water pump and the 3rd water pump, keep battery heat-exchanging part except QI KOU be to open
State is so that coolant flow degasification, until closing 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 coolant；If liquid level drops to below min, to second
The filler of overflow kettle slowly adds coolant with the speed of 1l/min, until the second overflow kettle liquid level be in max and min it
Between, stop filling coolant and stand one minute；If the decline of the second overflow kettle, continue to add coolant to max and min it
Between, if liquid level does not decline, close battery heat-exchanging part except QI KOU, filling completes.
After closing, coolant still can flow through water pump to each water pump above-mentioned naturally, and simply water pump no longer has guiding and drives
The power of dynamic coolant.After each closed electromagnetic valve above-mentioned, you can stop coolant from flowing through.
Claims (5)
1. a kind of pure electric automobile heat management system, divides including driving member heat management subsystem, crew module, battery thermal management
System；Described driving member heat management subsystem is by the first overflow kettle, the first water pump, radiator, electric drive heat-exchanging part
Constitute；One end of described radiator is connected with the first port of electric drive heat-exchanging part, the other end respectively with the first water pump
First port and the first overflow kettle connect, second port second end with the first water pump respectively of described electric drive heat-exchanging part
Mouth and the first overflow kettle connect；It is characterized in that described crew module, battery thermal management subsystem are by comprising vaporizer, heating core
Hvac device, the crew module's pipeline being located at crew module and being provided with the second electromagnetic valve, air compressor, condenser, the first electromagnetism
Valve, the 3rd electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, the second water pump, the 3rd water pump, it is provided with degasification pipeline except QI KOU, electricity
Pond heat-exchanging part, heater, the second overflow kettle are constituted；Described air compressor, condenser, the first electromagnetic valve and vaporizer according to
Secondary connect and constitute a loop, one end of described crew module's pipeline is connected with the contact of air compressor and vaporizer, another
End is connected with the contact of condenser and the first electromagnetic valve；One end of described 3rd electromagnetic valve is connected with the first port of heating core,
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 heater respectively；
The second port of described second water pump passes sequentially through the 4th electromagnetic valve, the second port with battery heat-exchanging part after degasification pipeline
It is connected；The second port of described battery heat-exchanging part is connected with the second port of the 3rd water pump by the 5th electromagnetic valve, described
The first port of the 3rd water pump is connected with the second port of heater；The second port of described heating core pass through the second overflow kettle with
The second port of the 3rd water pump is connected；It is provided with heat-exchanging part between described crew module's pipeline and degasification pipeline.
2. pure electric automobile heat management system according to claim 1 is it is characterised 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 is it is characterised in that described second overflow kettle is provided with
Max, min liquid level cue mark.
4. the coolant injection method of pure electric automobile heat management system according to claim 1, including driving member
The coolant injection of heat management subsystem, crew module, the coolant injection of battery thermal management subsystem are it is characterised in that electric drive
The coolant injection of part heat management subsystem comprises the steps:
A: the filler to the first overflow kettle slowly adds coolant, until coolant reaches the max upper limit of the first overflow kettle, stops
Filling coolant simultaneously stands one minute, if cooling-liquid level declines, continues plus coolant is to max line, if cooling-liquid level not under
Fall stops filling；
B: open the first water pump and make coolant flow degasification, until closing the first water when the liquid level of the first overflow kettle does not decline
Pump, observes liquid level: if liquid level drops between max and min, need not add coolant；If liquid level drops to below min, to
The filler of the first overflow kettle slowly adds coolant until the first overflow kettle liquid level is between max and min；Stop filling cooling
Liquid simultaneously stands one minute, if liquid level declines, continues to add coolant to max and min, if liquid level does not decline, has filled
Become.
5. the coolant injection method of pure electric automobile heat management system according to claim 4 is it is characterised in that occupant
Cabin, the coolant injection of battery thermal management subsystem comprise the steps:
C: close the first electromagnetic valve, the second electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve, keep the 3rd electromagnetic valve to open；To
The filler of two overflow kettles slowly adds coolant, until coolant reaches the max upper limit of the second overflow kettle, stops filling coolant
And stand one minute, if cooling-liquid level declines, continue plus coolant is to max line, if cooling-liquid level does not decline stopping and adds
Note；
D: open the 3rd water pump and make coolant flow degasification, until closing the 3rd water when the liquid level of the second overflow kettle does not decline
Pump；Slowly add coolant to the filler of the second overflow kettle until the second overflow kettle liquid level reaches max line；Stop filling coolant
And stand one minute, if the liquid level of the second overflow kettle declines, continue to add coolant to max line, if liquid level does not decline, execute
Step e；
E: open the first electromagnetic valve and the second electromagnetic valve so that coolant natural flow, observe the liquid level of the second overflow kettle, until
When coolant in second overflow kettle does not decline, the filler to the second overflow kettle slowly adds coolant, until coolant reaches
The max upper limit of the second overflow kettle, stops filling coolant and stands one minute, if the liquid level of the second overflow kettle declines, continues to mend
Plus coolant is to max line, if liquid level does not decline, stop filling, execute f step；
F: open the second water pump and the 4th electromagnetic valve, and open battery heat-exchanging part except QI KOU so that coolant flow is removed
Gas, until closing the second water pump when the liquid level of the second overflow kettle does not decline, the filler to the second overflow kettle slowly adds coolant
Until the liquid level of the second overflow kettle reaches max line, stop filling coolant and stand one minute, if under the liquid level of the second overflow kettle
Fall then continues to add coolant to max line, if liquid level does not decline, executes g step；
G: open the 5th electromagnetic valve, the second water pump and the 3rd water pump, keep battery heat-exchanging part except QI KOU be opening,
Make coolant flow degasification, until closing the second water pump and the 3rd water pump when the liquid level of the second overflow kettle does not decline；If second
The liquid level of overflow kettle still between max and min, then need not add coolant；If liquid level drops to below min, to the second overflow
The filler of kettle slowly adds coolant, until the liquid level of the second overflow kettle is between max and min, stops filling coolant simultaneously
Standing one minute；If the decline of the second overflow kettle, continue to add coolant to max and min, if liquid level does not decline, close
Close battery heat-exchanging part except QI KOU, filling completes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410750802.4A CN104477024B (en) | 2014-12-10 | 2014-12-10 | BEV (battery electric vehicle) thermal management system and cooling liquid filling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410750802.4A CN104477024B (en) | 2014-12-10 | 2014-12-10 | BEV (battery electric vehicle) thermal management system and cooling liquid filling method thereof |
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| CN104477024B true CN104477024B (en) | 2017-02-01 |
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