CN114530655A - High-voltage battery cooling and control system of hybrid electric vehicle - Google Patents
High-voltage battery cooling and control system of hybrid electric vehicle Download PDFInfo
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- CN114530655A CN114530655A CN202210255698.6A CN202210255698A CN114530655A CN 114530655 A CN114530655 A CN 114530655A CN 202210255698 A CN202210255698 A CN 202210255698A CN 114530655 A CN114530655 A CN 114530655A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
A high-voltage battery cooling and control system of a hybrid electric vehicle belongs to the technical field of hybrid electric vehicles. A refrigerant outlet of the air conditioner compressor is communicated with a refrigerant inlet of the air conditioner condenser, a refrigerant outlet of the air conditioner condenser is communicated with an inlet of a first three-way valve, two outlets of the first three-way valve are communicated with refrigerant inlets of a heat exchanger and an air conditioner evaporator, refrigerant outlets of the heat exchanger and the air conditioner evaporator are communicated with two inlets of a second three-way valve, and an outlet of the second three-way valve is communicated with a refrigerant inlet of the air conditioner compressor; a second electromagnetic valve and a second expansion valve are arranged between the first three-way valve and the heat exchanger, and a first electromagnetic valve and a first expansion valve are arranged between the first three-way valve and the air-conditioning evaporator; the water outlet of the high-voltage battery is communicated with the circulating water inlet of the heat exchanger, and the circulating water outlet of the heat exchanger is communicated with the water inlet of the high-voltage battery; the VCU vehicle control unit is in signal connection with the air conditioner compressor and the high-voltage battery, and is electrically connected with the two electromagnetic valves. The cooling device is used for cooling the high-voltage battery of the hybrid electric vehicle.
Description
Technical Field
The invention belongs to the technical field of hybrid electric vehicles, and particularly relates to a high-voltage battery cooling and control system of a hybrid electric vehicle.
Background
Compared with the traditional power automobile, the hybrid power automobile has the advantages of good dynamic property, long endurance, comfortable driving property and the like. On a hybrid electric vehicle, a high-voltage battery is needed to provide electric quantity for a motor to output torque, and meanwhile, braking energy is recovered to increase the electric quantity of the high-voltage battery. Thermal management of high voltage batteries is also important because high voltage batteries operate at operating currents of up to hundreds of amperes with the concomitant generation of significant amounts of heat. The high-voltage battery generally has two kinds of cooling methods of air-cooled and water-cooled, and wherein the water-cooled high-voltage battery carries out the heat exchange through the circulating water, guarantees that high-voltage battery during operation temperature can not be too high, need cool off the circulating water simultaneously, guarantees that the circulating water can in time take away high-voltage battery's heat, just so needs the high-voltage battery of one set of perfect cooling system to use.
The existing water-cooled high-voltage battery on the hybrid electric vehicle needs to additionally add a set of independent cooling system in the vehicle cabin, so that the development cost is high, and the space of the vehicle cabin is occupied.
Disclosure of Invention
The invention aims to provide a high-voltage battery cooling and control system for a hybrid electric vehicle, aiming at overcoming the defect that a water-cooled high-voltage battery on the hybrid electric vehicle needs to be additionally provided with a set of independent cooling system in a vehicle cabin.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a high-voltage battery cooling and control system of a hybrid electric vehicle comprises a heat exchanger, a water pump, two electromagnetic valves, two expansion valves and two three-way valves; the two electromagnetic valves are respectively a first electromagnetic valve and a second electromagnetic valve, the two expansion valves are respectively a first expansion valve and a second expansion valve, and the two three-way valves are respectively a first three-way valve and a second three-way valve;
the refrigerant outlet of the air conditioner compressor is communicated with the refrigerant inlet of the air conditioner condenser, the refrigerant outlet of the air conditioner condenser is communicated with the inlet of the first three-way valve, one of the outlets of the first three-way valve is communicated with the refrigerant inlet of the heat exchanger, the other of the outlets of the first three-way valve is communicated with the refrigerant inlet of the air conditioner evaporator, the refrigerant outlet of the heat exchanger is communicated with one of the inlets of the second three-way valve, the refrigerant outlet of the air conditioner evaporator is communicated with the other of the inlets of the second three-way valve, and the outlet of the second three-way valve is communicated with the refrigerant inlet of the air conditioner compressor through refrigerant pipelines; a second electromagnetic valve and a second expansion valve are arranged on a refrigerant pipeline between the first three-way valve and the heat exchanger from the inlet to the outlet, and a first electromagnetic valve and a first expansion valve are arranged on the refrigerant pipeline between the first three-way valve and the air conditioner evaporator from the inlet to the outlet; the water outlet of the high-voltage battery is communicated with the circulating water inlet of the heat exchanger, the circulating water outlet of the heat exchanger is communicated with the water inlet of the water pump, and the water outlet of the water pump is communicated with the water inlet of the high-voltage battery through water pipes;
the VCU vehicle control unit is respectively in signal connection with the air conditioner compressor and the high-voltage battery, and is respectively electrically connected with the first electromagnetic valve and the second electromagnetic valve.
Further, a liquid replenishing kettle is connected between the water pump and the high-voltage battery in parallel.
Further, a pneumatic valve is arranged on a kettle cover of the liquid supplementing kettle.
Compared with the prior art, the invention has the beneficial effects that:
the invention can cool the water-cooling high-voltage battery circulating water through the air-conditioning compressor (the high-voltage air-conditioning compressor of the vehicle), thereby realizing the cooling of the high-voltage battery and ensuring the working temperature of the high-voltage battery. According to the invention, the heat exchanger universal for the automobile is added on the refrigerant pipeline of the air-conditioning compressor, the electromagnetic valve II is additionally arranged at the front end of the heat exchanger for control, and the VCU vehicle controller comprehensively coordinates and controls the air-conditioning compressor and the refrigerant flow entering the heat exchanger by the electromagnetic valve II according to the temperature of the high-voltage battery, the requirement of a driver and the pipeline pressure to control the temperature of the circulating water of the high-voltage battery, thereby cooling the high-voltage battery. The invention uses the refrigerant of the air-conditioning compressor to cool the high-voltage battery, does not need to add an independent cooling system on the automobile, saves the development cost of the high-voltage battery up to 500 ten thousand, improves the operation peak power of the high-voltage battery, saves the space of the cabin of the automobile and enables the high-voltage battery to be adapted to more automobile types.
Drawings
FIG. 1 is a block diagram of a high voltage battery cooling system for a hybrid vehicle according to the present invention;
FIG. 2 is a block diagram of the operation of the cooling control system of the present invention.
The names and reference numbers of the components referred to in the above figures are as follows:
the system comprises a heat exchanger 1, a water pump 2, a first electromagnetic valve 3, a second electromagnetic valve 4, a first expansion valve 5, a second expansion valve 6, a first three-way valve 7, a second three-way valve 8, an air-conditioning compressor 9, an air-conditioning condenser 10, an air-conditioning evaporator 11, a high-voltage battery 12, a VCU vehicle control unit 13 and a liquid supplementing kettle 14.
Detailed Description
The first embodiment is as follows: as shown in fig. 1 and 2, the present embodiment discloses a high-voltage battery cooling and control system for a hybrid electric vehicle, which includes a heat exchanger 1, a water pump 2, two solenoid valves, two expansion valves and two three-way valves; the two solenoid valves are respectively a solenoid valve I3 and a solenoid valve II 4, the two expansion valves are respectively an expansion valve I5 and an expansion valve II 6, and the two three-way valves are respectively a three-way valve I7 and a three-way valve II 8;
a refrigerant outlet of an air conditioner compressor 9 is communicated with a refrigerant inlet of an air conditioner condenser 10, the refrigerant outlet of the air conditioner condenser 10 is communicated with an inlet of a first three-way valve 7, one outlet of the first three-way valve 7 is communicated with a refrigerant inlet of a heat exchanger 1, the other outlet of the first three-way valve 7 is communicated with a refrigerant inlet of an air conditioner evaporator 11, the refrigerant outlet of the heat exchanger 1 is communicated with one inlet of a second three-way valve 8, the refrigerant outlet of the air conditioner evaporator 11 is communicated with the other inlet of the second three-way valve 8, and the outlet of the second three-way valve 8 is communicated with the refrigerant inlet of the air conditioner compressor 9 through refrigerant pipelines; a second electromagnetic valve 4 and a second expansion valve 6 are arranged on a refrigerant pipeline between the first three-way valve 7 and the heat exchanger 1 from the inlet to the outlet, and a first electromagnetic valve 3 and a first expansion valve 5 are arranged on the refrigerant pipeline between the first three-way valve 7 and the air-conditioning evaporator 11 from the inlet to the outlet; a water outlet of the high-voltage battery 12 is communicated with a circulating water inlet of the heat exchanger 1, a circulating water outlet of the heat exchanger 1 is communicated with a water inlet of the water pump 2, and a water outlet of the water pump 2 is communicated with a water inlet of the high-voltage battery 12 through water pipes (preferably rubber pipes) (a refrigerant pipeline between the three-way valve I7 and the air-conditioning evaporator 11, a refrigerant pipeline between the air-conditioning evaporator 11 and the three-way valve II 8, and a refrigerant pipeline between the three-way valve II 8 and the air-conditioning compressor 9 are refrigerant pipelines of the cab, so that the cab is cooled, and the using function of the cab is unchanged);
the VCU vehicle control unit 13 is in signal connection with the air conditioner compressor 9 and the high-voltage battery 12 respectively, and the VCU vehicle control unit 13 is electrically connected with the first electromagnetic valve 3 and the second electromagnetic valve 4 respectively.
The two three-way valves control the opening and closing of the refrigerant pipeline (control the opening and closing of the refrigerant), and the two expansion valves control the flow rate of the refrigerant pipeline (control the flow rate of the refrigerant).
Further, a liquid replenishing pot 14 (for replenishing the cooling liquid of the high-voltage battery 12) is connected in parallel between the water pump 2 and the high-voltage battery 12.
Further, a pneumatic valve is installed on the lid of the fluid infusion pot 14 (gas in the pipeline can be exhausted through the pneumatic valve).
The cooling control system of the invention has the specific operation mode as follows: the VCU vehicle controller 13 monitors the temperature of the high-voltage battery 12 and the temperature of the cab simultaneously, when the temperature of the high-voltage battery 12 rises to a certain threshold value, the VCU vehicle controller 13 controls the solenoid valve II 4 (namely, the solenoid valve at the end of the high-voltage battery 12) to be opened, at the moment, a refrigerant of the air-conditioning compressor 9 enters the heat exchanger 1 to take away heat of circulating water of the high-voltage battery 12, the temperature of the high-voltage battery 12 is reduced, the opening value of the solenoid valve II 4 is in direct proportion to the temperature of the high-voltage battery 12, the higher the temperature is, the larger the opening of the solenoid valve II 4 is, the larger the flow of the refrigerant is, more heat is taken away, and the temperature of the high-voltage battery 12 is reduced below the threshold value. If the cab temperature needs to be cooled, the VCU vehicle controller 13 opens the first electromagnetic valve 3 (i.e., the electromagnetic valve at the cab end), so that cooling of the high-voltage battery 12 is not affected, and simultaneous cooling of the cab and the high-voltage battery 12 is realized.
The cooling system of the invention is installed in the following way: the water outlet of the high-voltage battery 12 is communicated with the circulating water inlet of the heat exchanger 1 through a water pipe, the circulating water outlet of the heat exchanger 1 is communicated with the water inlet of the water pump 2 through a water pipe, and the water outlet of the water pump 2 is communicated with the water inlet of the high-voltage battery 12 through a water pipe; the refrigerant outlet of the air conditioner compressor 9 is communicated with the refrigerant inlet of the air conditioner condenser 10 through a refrigerant pipeline, the refrigerant outlet of the air conditioner condenser 10 is communicated with the inlet of a first three-way valve 7 through a refrigerant pipeline, two outlets of the first three-way valve 7 are communicated with the refrigerant inlets of the air conditioner evaporator 11 and the heat exchanger 1 through two refrigerant pipelines, a second electromagnetic valve 4 is installed on the refrigerant pipeline between the first three-way valve 7 and the heat exchanger 1, a first electromagnetic valve 3 is installed on the refrigerant pipeline (the refrigerant pipeline of a cab) between the first three-way valve 7 and the air conditioner evaporator 11, the refrigerant outlets of the heat exchanger 1 and the air conditioner evaporator 11 are respectively communicated with two inlets of a second three-way valve 8 through refrigerant pipelines, and the outlet of the second three-way valve 8 is communicated with the refrigerant inlet of the air conditioner compressor 9 through a refrigerant pipeline.
The invention also comprises a set of cooling control system which is controlled and managed by the VCU integral controller 13 in a unified way, when the VCU integral controller 13 receives a request signal sent by the air-conditioning compressor 9 or the high-voltage battery 12, the electromagnetic valve I3 or the electromagnetic valve II 4 on the corresponding refrigerant pipeline is controlled to be opened, so that the refrigerant in the refrigerant pipeline enters the air-conditioning evaporator 11 or the heat exchanger 1, and the cooling of the cab or the cooling of the high-voltage battery 12 is realized; after the VCU vehicle controller 13 receives a closing signal sent by the air conditioner compressor 9 or the high-voltage battery 12, the electromagnetic valve one 3 or the electromagnetic valve two 4 on the corresponding refrigerant pipeline is controlled to be closed, so that the refrigerant in the refrigerant pipeline stops circulating.
The control process of the cooling control system of the invention is as follows:
1. the driver presses an AC button of the air conditioner compressor 9, and the VCU vehicle controller 13 receives a request signal from the air conditioner compressor 9;
2, the VCU vehicle controller 13 sends out a first electromagnetic valve 3 opening signal, and the first electromagnetic valve 3 is opened;
3. the driver cancels the AC button request of the air conditioner compressor 9, and the VCU vehicle controller 13 receives a closing signal from the air conditioner compressor 9;
4, the VCU vehicle controller 13 sends a closing signal of the first electromagnetic valve 3, and the first electromagnetic valve 3 is closed;
5. when the temperature of the high-voltage battery 12 is higher than the upper limit, the VCU vehicle controller 13 receives a temperature upper limit signal;
6, the VCU vehicle control unit 13 sends an opening signal of the second electromagnetic valve 4, and the second electromagnetic valve 4 is opened;
7. when the temperature of the high-voltage battery 12 is lower than the lower limit, the VCU vehicle controller 13 receives a temperature lower limit signal;
and 8, the VCU vehicle control unit 13 sends out a closing signal of the second electromagnetic valve 4, and the second electromagnetic valve 4 is closed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention.
Claims (3)
1. The utility model provides a hybrid vehicle high voltage battery cooling and control system which characterized in that: comprises a heat exchanger (1), a water pump (2), two electromagnetic valves, two expansion valves and two three-way valves; the two electromagnetic valves are respectively a first electromagnetic valve (3) and a second electromagnetic valve (4), the two expansion valves are respectively a first expansion valve (5) and a second expansion valve (6), and the two three-way valves are respectively a first three-way valve (7) and a second three-way valve (8);
the refrigerant outlet of the air-conditioning compressor (9) is communicated with the refrigerant inlet of the air-conditioning condenser (10), the refrigerant outlet of the air-conditioning condenser (10) is communicated with the inlet of a first three-way valve (7), one of the outlets of the first three-way valve (7) is communicated with the refrigerant inlet of a heat exchanger (1), the other outlet of the first three-way valve (7) is communicated with the refrigerant inlet of an air-conditioning evaporator (11), the refrigerant outlet of the heat exchanger (1) is communicated with one of the inlets of a second three-way valve (8), the refrigerant outlet of the air-conditioning evaporator (11) is communicated with the other inlet of the second three-way valve (8), and the outlet of the second three-way valve (8) is communicated with the refrigerant inlet of the air-conditioning compressor (9) through refrigerant pipelines respectively; a second electromagnetic valve (4) and a second expansion valve (6) are arranged on a refrigerant pipeline between the first three-way valve (7) and the heat exchanger (1) from the inlet to the outlet, and a first electromagnetic valve (3) and a first expansion valve (5) are arranged on the refrigerant pipeline between the first three-way valve (7) and the air-conditioning evaporator (11) from the inlet to the outlet; the water outlet of the high-voltage battery (12) is communicated with the circulating water inlet of the heat exchanger (1), the circulating water outlet of the heat exchanger (1) is communicated with the water inlet of the water pump (2), and the water outlet of the water pump (2) is communicated with the water inlet of the high-voltage battery (12) through water pipes;
the VCU vehicle control unit (13) is in signal connection with the air conditioner compressor (9) and the high-voltage battery (12) respectively, and the VCU vehicle control unit (13) is electrically connected with the first electromagnetic valve (3) and the second electromagnetic valve (4) respectively.
2. The high-voltage battery cooling system for the hybrid electric vehicle according to claim 1, characterized in that: and a liquid replenishing kettle (14) is connected in parallel between the water pump (2) and the high-voltage battery (12).
3. The high-voltage battery cooling system for the hybrid electric vehicle as set forth in claim 2, wherein: and a pneumatic valve is arranged on a kettle cover of the liquid supplementing kettle (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210255698.6A CN114530655A (en) | 2022-03-15 | 2022-03-15 | High-voltage battery cooling and control system of hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210255698.6A CN114530655A (en) | 2022-03-15 | 2022-03-15 | High-voltage battery cooling and control system of hybrid electric vehicle |
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| CN114530655A true CN114530655A (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210255698.6A Pending CN114530655A (en) | 2022-03-15 | 2022-03-15 | High-voltage battery cooling and control system of hybrid electric vehicle |
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| CN (1) | CN114530655A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248757A (en) * | 2020-11-13 | 2021-01-22 | 柳州易舟汽车空调有限公司 | New energy automobile electric heat pump air conditioner heat recovery and defrosting device |
| CN215850843U (en) * | 2021-04-27 | 2022-02-18 | 柳州五菱柳机动力有限公司 | P1+ P3 framework SUV battery cooling and heating waterway structure |
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2022
- 2022-03-15 CN CN202210255698.6A patent/CN114530655A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248757A (en) * | 2020-11-13 | 2021-01-22 | 柳州易舟汽车空调有限公司 | New energy automobile electric heat pump air conditioner heat recovery and defrosting device |
| CN215850843U (en) * | 2021-04-27 | 2022-02-18 | 柳州五菱柳机动力有限公司 | P1+ P3 framework SUV battery cooling and heating waterway structure |
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