CN218948881U - New energy automobile integrated form battery thermal management system - Google Patents
New energy automobile integrated form battery thermal management system Download PDFInfo
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- CN218948881U CN218948881U CN202223424372.6U CN202223424372U CN218948881U CN 218948881 U CN218948881 U CN 218948881U CN 202223424372 U CN202223424372 U CN 202223424372U CN 218948881 U CN218948881 U CN 218948881U
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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
Abstract
The utility model discloses a new energy automobile integrated battery thermal management system, which comprises a refrigerant loop and a cooling liquid loop; in the refrigerant loop, a refrigerant outlet of the battery cooler is connected with an inlet of the electric compressor and is provided with a condenser inlet temperature sensor; a condenser outlet temperature sensor and an electronic expansion valve are arranged between the refrigerant inlet of the battery cooler and the outlet of the condenser; the inlet of the condenser is connected with the outlet of the electric compressor; the cooling liquid loop comprises an electronic liquid pump and a heater; the cooling liquid outlet of the battery cooler is connected with the inlet of the heater; the cooling liquid inlet of the battery cooler is connected with the outlet of the electronic liquid pump; the outlet of the heater is connected with a battery liquid inlet pipe; the inlet of the electronic liquid pump is connected with a battery liquid outlet pipe. The utility model can meet various requirements of the battery at different environmental temperatures and has large refrigerating capacity of 10-25 kw.
Description
Technical Field
The utility model belongs to the field of new energy automobile battery thermal management, and particularly relates to a new energy automobile integrated battery thermal management system.
Background
Along with the increasingly severe requirements of various countries in the world on automobile emission and the confirmation of carbon neutralization targets, the comprehensive development of new energy automobiles is not easy, more and more traditional commercial automobile enterprises change the existing fuel automobile model into an electric or hybrid automobile model, but the problem of battery thermal management is brought along with, and the conventional common solution is to add corresponding pipelines on the basis of the original whole automobile thermal management system, and divide partial capacity into battery ends for heating or cooling. However, because the battery capacity of the commercial vehicle is high, the simultaneous requirements of the battery and the passenger compartment are hardly met by only one set of refrigeration system, and the requirements of the battery-changing vehicle type are not met.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides a new energy automobile integrated battery thermal management system, ensures the cooling and heating requirements of batteries in various use working conditions on the premise of not influencing the original automobile thermal management system, and applies an electronic expansion valve and coaxial pipeline technology to a commercial automobile water cooling unit for the first time.
The technical scheme adopted by the utility model is as follows:
the utility model includes a refrigerant circuit and a cooling liquid circuit; the refrigerant loop comprises an electric compressor, a condenser, an electronic expansion valve, a battery cooler, a condenser outlet temperature sensor and a condenser inlet temperature sensor; a refrigerant outlet of the battery cooler is connected with an inlet of the electric compressor and is provided with a condenser inlet temperature sensor; a condenser outlet temperature sensor and an electronic expansion valve are arranged between the refrigerant inlet of the battery cooler and the outlet of the condenser; the inlet of the condenser is connected with the outlet of the electric compressor; the cooling liquid loop comprises an electronic liquid pump and a heater; the cooling liquid outlet of the battery cooler is connected with the inlet of the heater; the cooling liquid inlet of the battery cooler is connected with the outlet of the electronic liquid pump; the outlet of the heater is connected with a battery liquid inlet pipe; the inlet of the electronic liquid pump is connected with a battery liquid outlet pipe; the battery liquid inlet pipe is provided with a battery liquid inlet temperature sensor, and the battery liquid outlet pipe is provided with a battery liquid outlet temperature sensor. The refrigerant cavity of the battery cooler is internally provided with refrigerant, and the cooling liquid cavity of the battery cooler is internally provided with cooling liquid; the refrigerant inlet and the refrigerant inlet are communicated with the refrigerant cavity, and the cooling liquid inlet and the cooling liquid outlet are communicated with the cooling liquid cavity.
Preferably, the condenser is provided with a first electronic fan and a second electronic fan.
Preferably, the inlet of the condenser is connected to the outlet of the electric compressor through a compressor discharge line.
Preferably, the condenser outlet temperature sensor and the condenser inlet temperature sensor both adopt PT temperature sensors.
Preferably, the connection lines of the condenser outlet and the condenser outlet temperature sensor are integrated in a coaxial tube with the connection lines of the electric compressor inlet and the battery cooler outlet.
Preferably, the liquid supplementing pot is also arranged on the liquid inlet pipe of the battery.
Preferably, the cooling liquid adopts water.
More preferably, the electric compressor, the condenser, the electronic expansion valve, the battery cooler, the electronic liquid pump, the heater, the electronic fan I and the electronic fan II are controlled by a controller; the controller is arranged in the control box and is powered by a DC/DC charging power supply; the DC/DC charging power supply is connected with a pre-charging circuit box; the refrigerant loop, the cooling liquid loop, the control box and the DC/DC charging power supply are all arranged in the outer shell, and an air temperature sensor is also arranged in the outer shell; the signal output ends of the condenser outlet temperature sensor, the condenser inlet temperature sensor, the battery liquid outlet temperature sensor and the air temperature sensor are all connected with the controller.
The utility model has the following beneficial effects:
1) The utility model is independent of the original vehicle air conditioning system and is an independent battery thermal management system, which can reduce the risks of the increased arrangement space requirement, the increased cost, the prolonged verification period and the like caused by the change of the original vehicle scheme, and the utility model can avoid the problem of unsuitable capacity allocation of the battery side and the air conditioning side, and has relatively simple control and shorter verification period. Moreover, the utility model is an integrated battery thermal management system (integrated in the outer shell), not only space integration, but also control integration and capacity integration, and can realize a battery cooling working mode, a battery heating working mode and a battery thermal balance working mode by utilizing the refrigerant loop, the cooling liquid loop and the controller, thereby meeting various requirements of the battery under different environmental temperatures; the whole system can be powered by only butting one wire harness interface of the pre-charging circuit box with the whole vehicle end, and the wire harness interface is simple to assemble and high in integration level.
2) The electronic expansion valve provided by the utility model can accurately control the opening degree of the electronic expansion valve by combining the feedback of the condenser inlet temperature sensor and the condenser outlet temperature sensor, and improves the overall efficiency of a battery cooling working mode, so that the requirement of large refrigerating capacity of 10-25 kw can be met.
3) According to the utility model, the connecting pipeline between the electric compressor inlet and the battery cooler outlet in the coaxial pipe further cools the refrigerant at the condenser outlet by utilizing the cooling capacity of the evaporated refrigerant, so that the cooling efficiency in a battery cooling mode can be improved.
Drawings
Fig. 1 is a system configuration diagram of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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 fall within the scope of the utility model.
As shown in fig. 1, a new energy automobile integrated battery thermal management system comprises a refrigerant loop and a cooling liquid loop; the refrigerant circuit comprises an electric compressor 1, a condenser 2, an electronic expansion valve 5, a battery cooler 6, a condenser outlet temperature sensor 7 and a condenser inlet temperature sensor 8; the refrigerant outlet of the battery cooler 6 is connected with the inlet (through a pipeline) of the electric compressor 1 and is provided with a condenser inlet temperature sensor 8; a refrigerant inlet of the battery cooler 6 is connected with an outlet of the condenser 2 (through a pipeline), and a condenser outlet temperature sensor 7 and an electronic expansion valve 5 are arranged between the refrigerant inlet of the battery cooler 6 and the outlet of the condenser 2; the inlet of the condenser 2 is connected with the outlet of the electric compressor 1; the coolant circuit includes an electronic liquid pump 11 and a heater (WPTC) 12; the cooling liquid outlet of the battery cooler 6 is connected with the inlet of the heater 12 (through a pipeline); the cooling liquid inlet of the battery cooler 6 is connected with the outlet (through a pipeline) of the electronic liquid pump 11; the outlet of the heater 12 is connected with a battery liquid inlet pipe 15; a battery liquid outlet pipe 16 is connected to the inlet of the electronic liquid pump 11; the battery liquid inlet pipe 15 is provided with a battery liquid inlet temperature sensor 13, and the battery liquid outlet pipe 16 is provided with a battery liquid outlet temperature sensor 14. The refrigerant cavity of the battery cooler 6 is internally provided with refrigerant, and the cooling liquid cavity of the battery cooler 6 is internally provided with cooling liquid; the refrigerant inlet and the refrigerant inlet are both communicated with the refrigerant cavity, and the cooling liquid inlet and the cooling liquid outlet are both communicated with the cooling liquid cavity.
As a preferred embodiment, the condenser 2 is provided with the first electronic fan 3 and the second electronic fan 4, and the water cooling is combined with air cooling, so that the cooling effect is greatly improved.
As a preferred embodiment, the inlet of the condenser 2 is connected to the outlet of the motor-compressor 1 via a compressor discharge line 10.
As a preferred embodiment, both the condenser outlet temperature sensor 7 and the condenser inlet temperature sensor 8 employ PT temperature sensors, and the condenser outlet temperature sensor 7 is resistant to high pressure.
As a preferred embodiment, the connection lines of the condenser outlet and the condenser outlet temperature sensor 7 are integrated in the coaxial tube 9 with the connection lines of the inlet of the motor-compressor 1 and the outlet of the battery cooler 6.
As a preferred embodiment, a fluid supplementing pot is further arranged on the battery fluid inlet pipe 15.
As a preferred embodiment, the cooling liquid is water.
As a preferred embodiment, the electric compressor 1, the condenser 2, the electronic expansion valve 5, the battery cooler 6, the electronic liquid pump 11, the heater 12, the electronic fan one 3 and the electronic fan two 4 are controlled by a controller; the controller is arranged in the control box 19 and is powered by the DC/DC charging power supply 17; the DC/DC charging power supply 17 is connected with a pre-charging circuit box 18, and the pre-charging circuit box 18 is connected with an external power supply to charge the DC/DC charging power supply 17; the refrigerant loop, the cooling liquid loop, the control box 19 and the DC/DC charging power supply 17 are all arranged in the outer shell, and an air temperature sensor 20 is also arranged in the outer shell; the signal output ends of the condenser outlet temperature sensor 7, the condenser inlet temperature sensor 8, the battery liquid inlet temperature sensor 13, the battery liquid outlet temperature sensor 14 and the air temperature sensor 20 are all connected with a controller.
When the integrated battery thermal management system of the new energy automobile is used, a battery liquid inlet pipe 15 and a battery liquid outlet pipe 16 are respectively connected with a liquid inlet and a liquid outlet of a battery; the integrated battery thermal management system of the new energy automobile has the following working modes:
1) Battery cooling mode:
in this mode, the electronic liquid pump 11 is operated, and the coolant in the battery cooler 6 is continuously fed into the battery via the heater 12 (in this mode, the heater 12 does not perform heating operation), exchanges heat with the battery, and returns to the battery cooler 6. Meanwhile, the electric compressor 1 works to pressurize the gaseous refrigerant formed by heat exchange between the liquid refrigerant in the battery cooler 6 and the cooling liquid with higher temperature, the temperature of the gaseous refrigerant is increased after pressurization, the gaseous refrigerant is cooled and changed into liquid state when passing through the condenser 2, the cooling is further realized through the first electronic fan 3 and the second electronic fan 4, the heat generated by cooling the refrigerant is transferred to the outside air, the condensed liquid refrigerant is then transferred to the electronic expansion valve 5 through the coaxial tube 9, the gaseous refrigerant just coming out of the battery cooler 6 in the coaxial tube 9 can further cool the liquid refrigerant which is transferred to the electronic expansion valve 5 (the temperature of the gaseous refrigerant coming out of the battery cooler 6 is lower than the liquid refrigerant which is transferred to the electronic expansion valve 5 when the temperature of the gaseous refrigerant is not increased by the electric compressor 1); the liquid refrigerant sent to the electronic expansion valve 5 is returned to the battery cooler 6 after being throttled and expanded by the electronic expansion valve 5 (the electronic expansion valve has a cooling and depressurizing effect on the refrigerant). In this mode, the controller 19 controls the rotation speed of the electric compressor 1, the opening of the electronic expansion valve, and the duty ratios of the first electronic fan 3, the second electronic fan 4 and the electronic liquid pump according to the battery inlet temperature and the inlet flow demand sent by the battery, and the feedback of the condenser inlet temperature sensor 8, the condenser outlet temperature sensor 9, the battery inlet temperature sensor 13, the battery outlet temperature sensor 14 and the air temperature sensor 20 to achieve the battery cooling target.
2) Battery heating mode:
in this mode, the electronic liquid pump 11 is operated, the coolant in the battery cooler 6 is fed to the heater 12 for heating, the heated coolant is transferred to the battery for heating the battery, and the coolant after heat exchange with the battery is returned to the battery cooler 6 through the electronic liquid pump 11. In the mode, the controller controls the power of the heater 12 and the duty ratio of the electronic liquid pump according to the battery liquid inlet temperature and the liquid inlet flow demand sent by the battery and the feedback of the battery liquid inlet temperature sensor 13 and the battery liquid outlet temperature sensor 14 to achieve the battery heating target.
3) Battery thermal balance mode:
in this mode, the electronic liquid pump 11 is operated, and the coolant in the battery cooler 6 is continuously fed into the battery via the heater 12 (in this mode, the heater 12 does not perform heating operation), and is returned to the battery cooler 6 after heat exchange with the battery, so that the coolant is continuously circulated, and the internal temperature of the battery is brought to the heat balance target. In the mode, the controller controls the duty ratio of the electronic liquid pump according to the flow demand of the inlet liquid sent by the battery to achieve the heat balance target of the battery.
The traditional thermal expansion valve for the vehicle can only meet the refrigeration capacity requirement of about 8 kw. The utility model uses the vehicle-gauge electronic expansion valve, can meet the requirement of large refrigeration capacity of 10-25 kw, and can accurately control the opening of the electronic expansion valve according to the feedback of the condenser inlet temperature sensor 8 and the condenser outlet temperature sensor 9, thereby achieving the maximization of capacity utilization. In addition, the utility model uses the refrigerant coaxial pipeline (integrated in the coaxial pipe 9), and can effectively improve the condensation capacity by 15% under the same heat dissipation windward area.
Claims (8)
1. The utility model provides a new energy automobile integrated form battery thermal management system, includes refrigerant circuit and coolant liquid return circuit, its characterized in that: the refrigerant loop comprises an electric compressor, a condenser, an electronic expansion valve, a battery cooler, a condenser outlet temperature sensor and a condenser inlet temperature sensor; a refrigerant outlet of the battery cooler is connected with an inlet of the electric compressor and is provided with a condenser inlet temperature sensor; a condenser outlet temperature sensor and an electronic expansion valve are arranged between the refrigerant inlet of the battery cooler and the outlet of the condenser; the inlet of the condenser is connected with the outlet of the electric compressor; the cooling liquid loop comprises an electronic liquid pump and a heater; the cooling liquid outlet of the battery cooler is connected with the inlet of the heater; the cooling liquid inlet of the battery cooler is connected with the outlet of the electronic liquid pump; the outlet of the heater is connected with a battery liquid inlet pipe; the inlet of the electronic liquid pump is connected with a battery liquid outlet pipe; a battery liquid inlet temperature sensor is arranged on the battery liquid inlet pipe, and a battery liquid outlet temperature sensor is arranged on the battery liquid outlet pipe; the refrigerant cavity of the battery cooler is internally provided with refrigerant, and the cooling liquid cavity of the battery cooler is internally provided with cooling liquid; the refrigerant inlet and the refrigerant inlet are communicated with the refrigerant cavity, and the cooling liquid inlet and the cooling liquid outlet are communicated with the cooling liquid cavity.
2. The new energy automobile integrated battery thermal management system of claim 1, wherein: the condenser is provided with a first electronic fan and a second electronic fan.
3. The new energy automobile integrated battery thermal management system of claim 1, wherein: the inlet of the condenser is connected with the outlet of the electric compressor through a compressor exhaust pipeline.
4. The new energy automobile integrated battery thermal management system of claim 1, wherein: and the condenser outlet temperature sensor and the condenser inlet temperature sensor are both PT temperature sensors.
5. The new energy automobile integrated battery thermal management system of claim 1, wherein: the connecting lines of the condenser outlet and the condenser outlet temperature sensor are integrated in a coaxial tube with the connecting lines of the electric compressor inlet and the battery cooler outlet.
6. The new energy automobile integrated battery thermal management system of claim 1, wherein: and a liquid supplementing kettle is also arranged on the liquid inlet pipe of the battery.
7. The new energy automobile integrated battery thermal management system of claim 1, wherein: the cooling liquid adopts water.
8. The new energy automobile integrated battery thermal management system of claim 2, wherein: the electric compressor, the condenser, the electronic expansion valve, the battery cooler, the electronic liquid pump, the heater, the first electronic fan and the second electronic fan are controlled by the controller; the controller is arranged in the control box and is powered by a DC/DC charging power supply; the DC/DC charging power supply is connected with a pre-charging circuit box; the refrigerant loop, the cooling liquid loop, the control box and the DC/DC charging power supply are all arranged in the outer shell, and an air temperature sensor is also arranged in the outer shell; the signal output ends of the condenser outlet temperature sensor, the condenser inlet temperature sensor, the battery liquid outlet temperature sensor and the air temperature sensor are all connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424372.6U CN218948881U (en) | 2022-12-19 | 2022-12-19 | New energy automobile integrated form battery thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424372.6U CN218948881U (en) | 2022-12-19 | 2022-12-19 | New energy automobile integrated form battery thermal management system |
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| Publication Number | Publication Date |
|---|---|
| CN218948881U true CN218948881U (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223424372.6U Active CN218948881U (en) | 2022-12-19 | 2022-12-19 | New energy automobile integrated form battery thermal management system |
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|---|---|
| CN (1) | CN218948881U (en) |
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2022
- 2022-12-19 CN CN202223424372.6U patent/CN218948881U/en active Active
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