CN218975551U - Novel power battery thermal management system - Google Patents
Novel power battery thermal management system Download PDFInfo
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- CN218975551U CN218975551U CN202222368251.8U CN202222368251U CN218975551U CN 218975551 U CN218975551 U CN 218975551U CN 202222368251 U CN202222368251 U CN 202222368251U CN 218975551 U CN218975551 U CN 218975551U
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Abstract
The utility model provides a novel power battery thermal management system which comprises a whole vehicle compression refrigeration system, an external radiator refrigeration system, a battery cooling system and a waste heat heating system, and is characterized in that the whole vehicle compression refrigeration system comprises a condenser, the external radiator refrigeration system comprises an external radiator, the battery cooling system comprises a heat exchanger, the heat exchanger is connected with a second water pump through a pipeline, the heat exchanger is connected with a second three-way valve, the second water pump is connected with a first three-way valve through a pipeline, the second three-way valve is connected with the first water pump, the waste heat heating system comprises a waste heat heating pipeline, and the waste heat heating pipeline is respectively connected with the battery system and the second three-way valve; the whole car cooling system is utilized to effectively cool the battery, the waste heat generated by the motor is utilized to heat the battery system, a heating system is not required to be started, and therefore the effects of saving energy and prolonging the endurance time of the power battery are achieved.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a novel power battery thermal management system.
Background
Thermal runaway is the most serious safety accident of a power battery, directly threatens the life safety of a user, and in recent years, the thermal runaway propagation problem of a battery system is solved by rapidly taking away heat generated by a thermal runaway battery cell, and the thermal management problem of the battery is one of key factors for determining the service performance, the safety, the service life and the service cost of the battery.
After the power battery system is out of control, the battery system can give an alarm, then the high-voltage power supply is cut off, the whole vehicle refrigerating system cannot work under the condition that a new energy automobile does not have the power source of the high-voltage power supply, only a 12V water pump can work under the power supply state of a vehicle-mounted 12V starting power supply, however, the heat taken away by circulating water is limited, the heat diffusion between electric cores in the module cannot be prevented, and then the fire and explosion are caused, so that the life and property safety of passengers is endangered.
Disclosure of Invention
The utility model aims to provide a novel power battery thermal management system.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides a novel power battery thermal management system, includes whole car compression refrigerating system, outside radiator refrigerating system, battery cooling system, its characterized in that, whole car compression refrigerating system includes the condenser, the input of condenser is connected with the output of compressor through the pipeline, the output of condenser is connected with the input of first expansion valve and second expansion valve respectively through the pipeline, the condenser is connected with the fan, the output of first expansion valve and second expansion valve is connected with the input of evaporimeter and the first input of heat exchanger through the pipeline respectively, the output of evaporimeter and the first output of heat exchanger are connected with the input of compressor through the pipeline respectively;
the external radiator refrigerating system comprises an external radiator, wherein the input end of the external radiator is connected with the output end of a first water pump through a pipeline, the output end of the external radiator is connected with the first end of a first three-way valve through a pipeline, the third end of the first three-way valve is connected with the input end of the first water pump through a pipeline, and the pipeline between the first three-way valve and the first water pump passes through a motor and an electric driving unit;
the battery cooling system comprises a heat exchanger, a second input end of the heat exchanger is connected with an output end of a second water pump through a pipeline, a pipeline between the heat exchanger and the second water pump passes through the battery system, a second output end of the heat exchanger is connected with a second end of a second three-way valve through a pipeline, an input end of the second water pump is connected with a second end of a first three-way valve through a pipeline, and a first end of the second three-way valve is connected with an output end of the first water pump through a pipeline;
the heat management system further comprises a waste heat heating system, the waste heat heating system comprises a waste heat heating pipeline, and two ends of the waste heat heating pipeline are respectively connected with the battery system and the third end of the second three-way valve.
Further, the condenser comprises a refrigerant passage and an air flow passage, wherein the input end of the refrigerant passage is connected with the output end of the compressor through a pipeline, the output end of the refrigerant passage is respectively connected with the input end of the first expansion valve and the input end of the second expansion valve through a pipeline, and the air flow passage is connected with the fan.
Further, a line between the second input of the heat exchanger of the battery cooling system and the output of the second water pump passes through the vehicle charger.
Further, when the first end and the third end of the first three-way valve are communicated and the second end and the third end of the second three-way valve are communicated, the external radiator refrigerating system and the battery cooling system work respectively;
when the first end and the second end of the first three-way valve are communicated and the first end, the second end and the third end of the second three-way valve are all communicated, the external radiator refrigerating system is communicated with the battery cooling system.
Further, when the first end and the second end of the first three-way valve are communicated, and the first end, the second end and the third end of the second three-way valve are all communicated, the motor cooling loop is communicated with the battery cooling loop through a waste heat heating pipeline, and waste heat of the motor heats the battery system.
According to the battery system, after the battery core triggers thermal runaway, the whole vehicle cooling system is utilized to effectively cool the battery, so that the thermal runaway spreading time is delayed, the aim of protecting passengers from being evacuated safely is achieved, in addition, under the condition of low temperature, the refrigerating compressor and the heating system are not started, the battery system is heated by utilizing waste heat generated by the motor, the heating system is not required to be started, and the effects of saving energy and prolonging the endurance time of the power battery are achieved.
Drawings
Fig. 1 is a frame diagram of the overall structure of the present utility model.
Reference numerals:
1 an external radiator, 2 a condenser, 3 a fan, 4 a compressor, 5 an evaporator, 6 an expansion valve,
7 expansion valve, 8 first water pump, 9 vehicle charger, 10 motor, 11 electric drive unit,
12 first three-way valve, 13 second three-way valve, 14 heat exchanger, 15 battery system, 16 second water pump,
17 waste heat heating pipeline.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.
The utility model discloses a novel power battery thermal management system, which is shown in figure 1 and comprises a whole vehicle compression refrigeration system, an external radiator refrigeration system, a battery cooling system and a waste heat heating system.
The whole vehicle compression refrigeration system comprises a condenser 2, a fan 3, a compressor 4, an evaporator 5, a first expansion valve 6, a heat exchanger 14 and a second expansion valve 7, wherein the condenser 2 comprises a refrigerant passage capable of performing heat exchange and an air flow passage, an inlet of the refrigerant passage is connected with an outlet of the compressor 4 through a pipeline, an outlet of the refrigerant passage is respectively connected with an inlet of the first expansion valve 6 and an inlet of the second expansion valve 7 through a pipeline, the air flow passage is connected with the fan 3, the fan 3 can be arranged on the condenser 2, an outlet of the first expansion valve 6 and an outlet of the second expansion valve 7 are respectively connected with an inlet of the evaporator 5 and a first inlet of the heat exchanger 14 through pipelines, and an outlet of the evaporator 5 and a first outlet of the heat exchanger 14 are respectively connected with an inlet of the compressor 4 through pipelines.
The refrigeration system of the external radiator 1 comprises the external radiator 1, a first water pump 8 and a first three-way valve 12. The inlet of the external radiator 1 is connected with the outlet of the first water pump 8 through a pipeline, the outlet of the external radiator 1 is connected with the inlet of the first three-way valve 12 through a pipeline, the first outlet of the first three-way valve 12 is connected with the inlet of the first water pump 8 through a pipeline, the pipeline passes through the motor 10 and the electric driving unit 11, the vehicle is provided with a vehicle-mounted charger 9, and the pipeline also passes through the vehicle-mounted charger 9.
The battery cooling system comprises a heat exchanger 14, a second expansion valve 7, a second water pump 16 and a second three-way valve 13. The second inlet of the heat exchanger 14 is connected with the outlet of the second water pump 16 through a pipeline, and the section of pipeline passes through the battery system 15, the second outlet of the heat exchanger 14 is connected with the inlet of the second three-way valve 13 through a pipeline, the inlet of the second water pump 16 is connected with the second outlet of the first three-way valve 12 of the refrigeration system of the external radiator 1 through a pipeline, and the second outlet of the second three-way valve 13 is connected with the outlet of the first water pump 8 of the refrigeration system of the external radiator 1 through a pipeline.
The waste heat heating system comprises a waste heat heating pipeline 17, and two ends of the waste heat heating pipeline 17 are respectively connected with the battery system 15 and the third end of the second three-way valve 13.
When the power battery thermal management system works normally, the whole vehicle compression refrigeration system, the external radiator 1 refrigeration system and the battery cooling system work respectively, wherein the first three-way valve 12 of the external radiator 1 refrigeration system is communicated with the first end and the third end, the second end is closed, the second three-way valve 13 of the battery cooling system is communicated with the second end and the third end, and the first end is closed.
When the first three-way valve 12 is switched to be communicated with the first end and the second end, the second three-way valve 13 is switched to be communicated with the first end, the second end and the third end, and at the moment, the refrigerating system of the external radiator 1 is communicated with the battery cooling system, and the refrigerating system of the external radiator 1 can be used for cooling the battery system 15 of the battery cooling system, so that the effects of saving energy and prolonging the duration time of the power battery can be achieved when the climate is mild and the power battery is in a parking and charging state, and the purposes of delaying the thermal runaway spreading time and ensuring that passengers have sufficient time to safely evacuate can be achieved when the power battery is in thermal runaway.
Under the low temperature state, switch over into first end and second end intercommunication through first three-way valve 12, second three-way valve 13 switches into first end, second end and third end all intercommunication, makes motor cooling circuit pass through waste heat heating pipeline 17 and battery cooling circuit intercommunication, utilizes the waste heat that motor 10 produced to heat battery system 15, need not to open heating system, reaches energy-conservation, prolongs power battery's duration's effect.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (5)
1. The utility model provides a novel power battery thermal management system, includes whole car compression refrigerating system, outside radiator refrigerating system, battery cooling system, its characterized in that, whole car compression refrigerating system includes the condenser, the input of condenser is connected with the output of compressor through the pipeline, the output of condenser is connected with the input of first expansion valve and second expansion valve respectively through the pipeline, the condenser is connected with the fan, the output of first expansion valve and second expansion valve is connected with the input of evaporimeter and the first input of heat exchanger through the pipeline respectively, the output of evaporimeter and the first output of heat exchanger are connected with the input of compressor through the pipeline respectively;
the external radiator refrigerating system comprises an external radiator, wherein the input end of the external radiator is connected with the output end of a first water pump through a pipeline, the output end of the external radiator is connected with the first end of a first three-way valve through a pipeline, the third end of the first three-way valve is connected with the input end of the first water pump through a pipeline, and the pipeline between the first three-way valve and the first water pump passes through a motor and an electric driving unit;
the battery cooling system comprises a heat exchanger, a second input end of the heat exchanger is connected with an output end of a second water pump through a pipeline, a pipeline between the heat exchanger and the second water pump passes through the battery system, a second output end of the heat exchanger is connected with a second end of a second three-way valve through a pipeline, an input end of the second water pump is connected with a second end of a first three-way valve through a pipeline, and a first end of the second three-way valve is connected with an output end of the first water pump through a pipeline;
the heat management system further comprises a waste heat heating system, the waste heat heating system comprises a waste heat heating pipeline, and two ends of the waste heat heating pipeline are respectively connected with the battery system and the third end of the second three-way valve.
2. The novel power cell thermal management system of claim 1 wherein the condenser comprises a refrigerant passage and an air flow passage, the input of the refrigerant passage being connected to the output of the compressor by a conduit, the output of the refrigerant passage being connected to the input of the first expansion valve and the input of the second expansion valve, respectively, by a conduit, and the air flow passage being connected to the fan.
3. The novel power battery thermal management system of claim 1, wherein a line between the second input of the heat exchanger and the output of the second water pump of the battery cooling system passes through an on-board charger.
4. The novel power battery thermal management system according to any one of claims 1 to 3, wherein when the first end and the third end of the first three-way valve are communicated and the second end and the third end of the second three-way valve are communicated, the external radiator refrigerating system and the battery cooling system work respectively;
when the first end and the second end of the first three-way valve are communicated and the first end, the second end and the third end of the second three-way valve are all communicated, the external radiator refrigerating system is communicated with the battery cooling system.
5. The novel power battery thermal management system of claim 4, wherein when the first end and the second end of the first three-way valve are communicated, and the first end, the second end and the third end of the second three-way valve are all communicated, the motor cooling circuit is communicated with the battery cooling circuit through a waste heat heating pipeline, and waste heat of the motor heats the battery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222368251.8U CN218975551U (en) | 2022-09-06 | 2022-09-06 | Novel power battery thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222368251.8U CN218975551U (en) | 2022-09-06 | 2022-09-06 | Novel power battery thermal management system |
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| Publication Number | Publication Date |
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| CN218975551U true CN218975551U (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222368251.8U Active CN218975551U (en) | 2022-09-06 | 2022-09-06 | Novel power battery thermal management system |
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| CN (1) | CN218975551U (en) |
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2022
- 2022-09-06 CN CN202222368251.8U patent/CN218975551U/en active Active
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