CN220774494U - Battery thermal management system suitable for commercial car - Google Patents
Battery thermal management system suitable for commercial car Download PDFInfo
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- CN220774494U CN220774494U CN202322393702.8U CN202322393702U CN220774494U CN 220774494 U CN220774494 U CN 220774494U CN 202322393702 U CN202322393702 U CN 202322393702U CN 220774494 U CN220774494 U CN 220774494U
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- expansion valve
- battery
- electronic proportional
- water pump
- proportional expansion
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- 239000003507 refrigerant Substances 0.000 claims abstract description 31
- 239000000110 cooling liquid Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 18
- 239000002826 coolant Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000002441 reversible effect Effects 0.000 abstract description 2
- 101000599105 Arabidopsis thaliana Outer envelope pore protein 16-1, chloroplastic Proteins 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to the field of whole vehicle heat management, in particular to a battery heat management system suitable for a commercial vehicle, which aims to solve the problem of overlarge temperature difference between a multi-battery pack heating and refrigerating battery cell of the commercial vehicle. The battery thermal management system suitable for the commercial vehicle comprises an air conditioner refrigerant loop and a battery cooling liquid loop, wherein the battery cooling liquid loop can realize forward and reverse alternate flow of cooling liquid and can control multi-branch flow. The whole thermal management system has the function of reducing the temperature difference of the battery cells when the battery system heats and refrigerates, and is beneficial to maintaining the consistency of the battery cells for a long time.
Description
Technical Field
The utility model relates to the technical field of thermal management, in particular to a battery thermal management system suitable for a commercial vehicle.
Background
In recent years, new energy vehicles are rapidly developed, and whole-vehicle thermal management is attracting attention as an important technical field of new energy vehicles. At present, the research of the whole vehicle heat management mostly relates to new energy passenger vehicles, but the research on new energy commercial vehicles is less, the new energy passenger vehicles and the commercial vehicles are different in heat management, and the battery system of the new energy commercial vehicle adopts a multi-battery pack scheme, so that the problem that the whole vehicle heat management water channel is too long in multi-branch and branch channels is forced, the phenomenon that the temperature difference between each branch battery core of the battery pack and the water inlet and water outlet battery core is too large is caused, and the problem that the consistency difference of the battery cores is too large is caused after long-term use, so that the battery is damaged, and the service life of the battery is influenced.
Disclosure of Invention
The utility model aims to provide a battery thermal management system suitable for a commercial vehicle, which aims to solve the problems that a battery system of a common new energy commercial vehicle in the market adopts a multi-battery pack scheme, which is proposed in the background technology, forces a whole vehicle thermal management water channel to have multiple branches and excessively long branch flow channels, causes the phenomenon of excessively large temperature difference between each branch battery core and each water inlet and water outlet battery core of the battery pack, causes the problem of excessively large consistency difference of the battery cores after long-term use, and causes the damage of the battery and influences the service life of the battery.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the battery thermal management system comprises an air conditioner refrigerant loop and a battery cooling liquid loop, wherein the air conditioner refrigerant loop and the battery cooling liquid loop are connected with each other, the air conditioner refrigerant loop comprises a compressor, a temperature pressure sensor, a condenser, a thermal expansion valve, a plate heat exchanger and a gas-liquid separator, the compressor, the temperature pressure sensor, the condenser, the thermal expansion valve, the plate heat exchanger and the gas-liquid separator are connected together through pipelines, and the battery cooling liquid loop comprises a water pump a, a water pump b, an electronic proportional expansion valve a, an electronic proportional expansion valve b, an electronic proportional expansion valve c, a temperature sensor a, a hydrothermal PTC and a battery cooling plate, and the water pump a, the water pump b, the electronic proportional expansion valve a, the electronic proportional expansion valve b, the temperature sensor a, the temperature sensor b, the hydrothermal PTC and the battery cooling plate are connected together through the pipelines.
Preferably, the temperature and pressure sensor is arranged at the refrigerant output end of the compressor, the thermostatic expansion valve is arranged at the refrigerant output end of the condenser, and the temperature sensing package arranged at one end of the thermostatic expansion valve is arranged at the output end of the plate heat exchanger.
Preferably, there is no temperature sensor between the plate heat exchanger and the hydrothermal PTC pipeline, the temperature sensor a is installed outside the hydrothermal PTC pipeline, and the temperature sensor b is installed outside the plate heat exchanger for detecting the temperature of the cooling liquid.
Preferably, the directions of the water pump a and the water pump b are opposite, the water pump a is arranged between the hydrothermal PTC and the electronic proportional expansion valve a, the electronic proportional expansion valve b and the electronic proportional expansion valve c, and the water pump b is arranged between the plate heat exchanger and the battery liquid cooling plate.
Preferably, the electronic proportional expansion valve a, the electronic proportional expansion valve b and the electronic proportional expansion valve c are arranged between the water pump a and the battery liquid cooling plate, and the electronic proportional expansion valve a, the electronic proportional expansion valve b and the electronic proportional expansion valve c are respectively arranged on each branch of the battery liquid cooling pipeline.
Compared with the prior art, the utility model has the beneficial effects that: the battery thermal management system suitable for the commercial vehicle can dynamically distribute the flow of each branch of the battery thermal management in the actual use process, can realize the forward and reverse alternate flow of the cooling liquid, reduces the temperature difference of the battery cells in the battery system, is beneficial to improving the consistency of the battery cells, and prolongs the service life of the battery.
Drawings
Fig. 1 is a schematic diagram of a battery thermal management system suitable for use in a commercial vehicle in accordance with the present utility model.
In the figure: 1. an air conditioning refrigerant circuit; 2. a battery coolant circuit; 3. a compressor; 4. a temperature and pressure sensor; 5. a condenser; 6. a thermal expansion valve; 601. a temperature sensing bag; 7. a plate heat exchanger; 8. a gas-liquid separator; 9. a water pump a; 10. a water pump b; 11. a sub-proportional expansion valve a; 12. an electronic proportional expansion valve b; 13. an electronic proportional expansion valve c; 14. a temperature sensor a; 15. a temperature sensor b; 16. a hydrothermal PTC; 17. and a battery liquid cooling plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides a technical solution: the battery thermal management system suitable for the commercial vehicle comprises an air-conditioning refrigerant loop 1 and a battery cooling liquid loop 2, wherein the air-conditioning refrigerant loop 1 and the battery cooling liquid loop 2 are connected with each other, the air-conditioning refrigerant loop 1 comprises a compressor 3, a temperature pressure sensor 4, a condenser 5, a thermal expansion valve 6, a plate heat exchanger 7 and a gas-liquid separator 8, the compressor 3, the temperature pressure sensor 4, the condenser 5, the thermal expansion valve 6, the plate heat exchanger 7 and the gas-liquid separator 8 are connected together through pipelines, the battery cooling liquid loop 2 comprises a water pump a9, a water pump b10, an electronic proportional expansion valve a11, an electronic proportional expansion valve b12, an electronic proportional expansion valve c13, a temperature sensor a14, a temperature sensor b15, a hydrothermal PTC16 and a battery cooling plate 17, and the water pump a9, the water pump b10, the electronic proportional expansion valve a11, the electronic proportional expansion valve c13, the temperature sensor a14, the temperature sensor b15, the hydrothermal PTC16 and the battery cooling plate 17 are connected together through pipelines.
The utility model has provided a battery thermal management system suitable for commercial car, in the refrigerating mode, the refrigerant is compressed into the high-temperature high-pressure gas by the compressor 3, take place the heat exchange in the condenser 5, the refrigerant temperature is reduced, through the thermal expansion valve 6, the refrigerant pressure is released, the refrigerant temperature is further reduced, the refrigerant of low temperature in the plate heat exchanger 7 takes place the heat exchange with the coolant of high temperature, the refrigerant takes away a part of heat of coolant, the coolant cooled through the drive of the water pump b10, flow through the battery liquid cooling plate 17, according to the average temperature of the electric core in the three branches, control the opening of the electronic proportional expansion valve a11, electronic proportional expansion valve b12, electronic proportional expansion valve c13, regulate the flow of the three ways, thus reduce the temperature difference between electric core of the three branches, if the electric core temperature of water inlet is too different from electric core temperature of water inlet, through regulating the switch of the water pump a9 and water pump b10, thus reduce the water inlet and water outlet temperature difference;
under the heating mode, the air conditioner refrigerant loop 1 is closed, the hydrothermal PTC16 starts to work, the temperature of the cooling liquid rises after passing through the hydrothermal PTC16, the temperature of the battery liquid cooling plate 17 is driven to rise by the water pump b10, the cooling liquid flow direction is controlled by the water pump a9 and the water pump b10 consistent with the control mode of the cooling mode, and the three-branch flow is regulated by controlling the opening of the electronic proportional expansion valve a11, the electronic proportional expansion valve b12 and the electronic proportional expansion valve c13, so that the temperature difference between the battery cores is reduced, the consistency of the battery cores is improved, and the service life of the battery is prolonged.
Specifically, the temperature and pressure sensor 4 is installed at the refrigerant output end of the compressor 3, the thermal expansion valve 6 is installed at the refrigerant output end of the condenser 5, the temperature sensing bag 601 arranged at one end of the thermal expansion valve 6 is installed at the output end of the plate heat exchanger 7, the temperature and pressure of a refrigerant pipeline can be detected by the installation of the temperature and pressure sensor 4 at the refrigerant output end of the compressor 3, the condenser 5 is arranged at the rear end of the temperature and pressure sensor 4, the function is to enable the refrigerant to exchange heat with the outside, the temperature of the refrigerant is reduced, the thermal expansion valve 6 is installed at the rear end of the refrigerant, the temperature sensing bag 601 arranged at one end of the thermal expansion valve 6 is installed at the rear end of the plate heat exchanger 7, the opening degree of the expansion valve is adjusted according to the temperature of the refrigerant at the rear end of the plate heat exchanger 7, the plate heat exchanger 7 is installed at the rear end of the thermal expansion valve 6, the function is to enable the refrigerant to exchange heat with the cooling liquid, the temperature of the cooling liquid is reduced, and the rear end of the plate heat exchanger 7 is provided with the gas-liquid separator 8, and the refrigerant entering the compressor 3 is gas.
Specifically, there is no temperature sensor between the plate heat exchanger 7 and the hydrothermal PTC16 pipe, the temperature sensor a14 is installed outside the hydrothermal PTC16 pipe, the temperature sensor b15 is installed outside the plate heat exchanger 7 for detecting the temperature of the coolant, it is advantageous that the temperature sensor a14 can detect the temperature outside the hydrothermal PTC16 pipe, and the temperature sensor b15 can detect the temperature of the coolant flowing through the plate heat exchanger 7.
Specifically, the directions of the water pump a9 and the water pump b10 are opposite, the water pump a9 is arranged between the hydrothermal PTC16 and the electronic proportional expansion valve a11, the electronic proportional expansion valve b12 and the electronic proportional expansion valve c13, and the water pump b10 is arranged between the plate heat exchanger 7 and the battery liquid cooling plate 17, so that the water pump a9 and the water pump b10 can be adjusted to be opened and closed, and the flow direction of the cooling liquid can be adjusted.
Specifically, the electronic proportional expansion valve a11, the electronic proportional expansion valve b12 and the electronic proportional expansion valve c13 are installed between the water pump a9 and the battery liquid cooling plate 17, and the electronic proportional expansion valve a11, the electronic proportional expansion valve b12 and the electronic proportional expansion valve c13 are respectively installed on each branch of the battery liquid cooling pipeline, so that the temperature difference between the three-branch electric cores is reduced by controlling the opening degree of the electronic proportional expansion valve a11, the electronic proportional expansion valve b12 and the electronic proportional expansion valve c13 and adjusting the flow of the three paths.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. Battery thermal management system suitable for commercial car, including air conditioner refrigerant circuit (1) and battery coolant circuit (2), its characterized in that: the air conditioner refrigerant circuit (1) is connected with the battery cooling liquid circuit (2) mutually, the air conditioner refrigerant circuit (1) comprises a compressor (3), a temperature pressure sensor (4), a condenser (5), a thermal expansion valve (6), a plate heat exchanger (7) and a gas-liquid separator (8), the compressor (3), the temperature pressure sensor (4), the condenser (5), the thermal expansion valve (6), the plate heat exchanger (7) and the gas-liquid separator (8) are connected together through arranged pipelines, the battery cooling liquid circuit (2) comprises a water pump a (9), a water pump b (10), an electronic proportional expansion valve a (11), an electronic proportional expansion valve b (12), an electronic proportional expansion valve c (13), a temperature sensor a (14), a temperature sensor b (15), a hydrothermal PTC (16) and a battery liquid cooling plate (17), and the water pump a (9), the water pump b (10), the electronic proportional expansion valve a (11), the electronic proportional expansion valve c (13), the temperature sensor a (14), the electronic proportional expansion valve b (11) and the battery PTC (16) are connected together through the pipelines.
2. A battery thermal management system for a commercial vehicle according to claim 1, wherein: the temperature and pressure sensor (4) is arranged at the refrigerant output end of the compressor (3), the thermal expansion valve (6) is arranged at the condensing agent output end of the condenser (5), and the temperature sensing bag (601) arranged at one end of the thermal expansion valve (6) is arranged at the output end of the plate heat exchanger (7).
3. A battery thermal management system for a commercial vehicle according to claim 1, wherein: there is no temperature sensor between the plate heat exchanger (7) and the hydrothermal PTC (16) pipeline, the temperature sensor a (14) is arranged on the outer side of the hydrothermal PTC (16) pipeline, and the temperature sensor b (15) is arranged on the outer side of the plate heat exchanger (7) and used for detecting the temperature of cooling liquid.
4. A battery thermal management system for a commercial vehicle according to claim 1, wherein: the water pump a (9) and the water pump b (10) are opposite in steering, the water pump a (9) is arranged between the hydrothermal PTC (16) and the electronic proportional expansion valve a (11), the electronic proportional expansion valve b (12) and the electronic proportional expansion valve c (13), and the water pump b (10) is arranged between the plate heat exchanger (7) and the battery liquid cooling plate (17).
5. A battery thermal management system for a commercial vehicle according to any of claims 1-4, wherein: the electronic proportional expansion valve a (11), the electronic proportional expansion valve b (12) and the electronic proportional expansion valve c (13) are arranged between the water pump a (9) and the battery liquid cooling plate (17), and the electronic proportional expansion valve a (11), the electronic proportional expansion valve b (12) and the electronic proportional expansion valve c (13) are respectively arranged on each branch of the battery liquid cooling pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322393702.8U CN220774494U (en) | 2023-09-04 | 2023-09-04 | Battery thermal management system suitable for commercial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322393702.8U CN220774494U (en) | 2023-09-04 | 2023-09-04 | Battery thermal management system suitable for commercial car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220774494U true CN220774494U (en) | 2024-04-12 |
Family
ID=90617723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322393702.8U Active CN220774494U (en) | 2023-09-04 | 2023-09-04 | Battery thermal management system suitable for commercial car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220774494U (en) |
-
2023
- 2023-09-04 CN CN202322393702.8U patent/CN220774494U/en active Active
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