CN111129652A - Vehicle battery cooling system and cooling method - Google Patents
Vehicle battery cooling system and cooling method Download PDFInfo
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- CN111129652A CN111129652A CN202010037112.XA CN202010037112A CN111129652A CN 111129652 A CN111129652 A CN 111129652A CN 202010037112 A CN202010037112 A CN 202010037112A CN 111129652 A CN111129652 A CN 111129652A
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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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
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
- H01M10/6564—Gases with forced flow, e.g. by blowers using compressed gas
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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
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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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
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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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- 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
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- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a vehicle battery cooling system and a cooling method, wherein the vehicle battery cooling system comprises: the system comprises a condenser, an evaporator, a plate type heat exchanger, a heat dissipation water tank and a compressor; the compressor can compress the gaseous refrigerant output by the evaporator and convey the compressed gaseous refrigerant to the condenser; the condenser may condense the gaseous refrigerant into a liquid refrigerant; the evaporator obtains liquid refrigerant and absorbs the heat of the cooled object to convert the liquid refrigerant into gaseous refrigerant; the plate heat exchanger is communicated with the condenser, so that heat exchange between the refrigerant and water in the heat-radiating water tank can be realized, the compressor is communicated with the plate heat exchanger and used for compressing the gaseous refrigeration heated after heat exchange and then condensing the gaseous refrigeration by entering the condenser again, and the cooling of the battery pack is realized by circulating the way. The invention provides a vehicle battery cooling system and a cooling method, which aim to solve the problems of large volume and high price of the conventional electric heating management unit.
Description
Technical Field
The invention relates to the technical field of vehicle air conditioners, in particular to a vehicle battery cooling system and a cooling method.
Background
With the development of new energy automobiles, electric driving is mainly adopted, and meanwhile, low power consumption, low emission and high performance of the whole automobile are realized through matching of a battery source and an engine source, so that the problems of the cruising ability and the service life of a battery of an electric car are solved.
The existing new energy electric vehicle needs a host factory to independently configure a battery thermal management unit so as to solve the problems of long-term endurance mileage and short battery life caused by overhigh battery temperature in the long-term running process of the electric vehicle. However, there are two problems with a separate battery thermal management unit: the price is expensive and the volume is large.
Disclosure of Invention
The embodiment of the invention provides a vehicle battery cooling system and a cooling method, which aim to solve the problems of large volume and high price of the conventional electric heating management unit.
In a first aspect, an embodiment of the present invention provides a vehicle battery cooling system, including: the system comprises a condenser, an evaporator, a plate type heat exchanger, a heat dissipation water tank and a compressor;
the compressor is used for compressing gaseous refrigerant; the output end of the compressor is communicated with the input end of the condenser and is used for conveying the compressed gaseous refrigerant to the condenser; the condenser is used for condensing the gaseous refrigerant into liquid refrigerant by exchanging heat with air or water;
the input end of the evaporator is communicated with the output end of the condenser and is used for acquiring the liquid refrigerant and absorbing the heat of the cooled object to convert the liquid refrigerant into a gaseous refrigerant; the output end of the evaporator is also communicated with the input end of the compressor;
the plate heat exchanger comprises a first input end and a first output end which are communicated with each other, and a second input end and a second output end which are communicated with each other; the first input end of the plate heat exchanger is communicated with the output end of the condenser; the first output end of the plate heat exchanger is communicated with the input end of the compressor; the second input end of the plate heat exchanger is communicated with the output end of the heat radiation water tank through a heat exchange pipeline, and the second output end of the plate heat exchanger is communicated with the input end of the heat radiation water tank; the plate heat exchanger is used for realizing heat exchange between the liquid refrigerant and water in the heat dissipation water tank to form gaseous refrigerant, so that the water temperature in the heat dissipation water tank is reduced; wherein, heat exchange pipe passes the inside of battery box and is used for realizing the cooling of battery box.
In a second aspect, an embodiment of the present invention further provides a method for cooling a vehicle battery, which is applied to the vehicle battery cooling system provided in any embodiment of the present invention, and the method for cooling the vehicle battery includes:
when the battery box needs to be cooled, controlling the output end of the condenser to be communicated with the first input end of the plate heat exchanger, so that the condenser, the plate heat exchanger and the compressor cool water in the heat dissipation water tank;
when the air conditioning unit is required to refrigerate, controlling the output end of the condenser to be communicated with the input end of the evaporator, so that the condenser, the evaporator and the compressor realize the refrigerating process of the air conditioning unit;
when the battery box needs to be cooled and the air conditioning unit is refrigerated, the output end of the condenser is communicated with the first input end of the plate heat exchanger, and the output end of the condenser is communicated with the input end of the evaporator.
In the invention, an air conditioning unit for refrigeration and a heat management unit for cooling are integrated to form a vehicle battery cooling system, wherein a condenser, a compressor, a plate heat exchanger and a heat dissipation water tank are used as the heat management unit of a battery box, the condenser is used for absorbing gas state compressed by the compressor, the plate heat exchanger comprises a channel formed by a first input end and a first output end and used for conveying refrigerant, the channel formed by a second input end and a second output end is used for conveying flowing water in the heat dissipation water tank, the refrigerant and the water of the heat dissipation water tank are subjected to heat exchange through the plate heat exchanger to reduce the water temperature and increase the temperature of the refrigerant, so that the refrigerant is converted from liquid state to gas state, and the first output end of the plate heat exchanger is communicated with the compressor and used for compressing the gas refrigerant after temperature rise into, the air conditioning unit and the heat management unit share the compressor and the condenser, and the output end of the condenser is divided into two paths to realize respective operation or joint operation of the air conditioning unit and the heat management unit, so that the setting volume of the heat management unit is saved, and the price cost of the heat management unit is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle battery cooling system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another vehicle battery cooling system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for cooling a vehicle battery according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
With the development of the mobile air-conditioning industry, the air-conditioning of the electric car slowly becomes the mainstream of the domestic public transportation market, and the problems of the endurance and the old battery of the electric car are followed. The existing new energy electric car needs a heat management unit with a battery box separately configured in a host factory so as to solve the problems of long-term running mileage and shortened battery life caused by overhigh temperature of the battery box in the long-term running process of the electric car. But the cost of the independent heat management unit is high, and the volume is large, so that the energy consumption of the electric vehicle is high. The purpose of this scheme is that make the heat management unit of air conditioning unit and battery box share former air conditioning unit's condenser and compressor, form automobile-used battery cooling system, reduce the cost of heat management unit to reduce the volume of heat management unit.
The embodiment of the invention provides a vehicle battery cooling system, which comprises: the system comprises a condenser, an evaporator, a plate type heat exchanger, a heat dissipation water tank and a compressor;
the compressor is used for compressing gaseous refrigerant; the output end of the compressor is communicated with the input end of the condenser and is used for conveying the compressed gaseous refrigerant to the condenser; the condenser is used for condensing the gaseous refrigerant into liquid refrigerant by exchanging heat with air or water;
the input end of the evaporator is communicated with the output end of the condenser and is used for acquiring the liquid refrigerant and absorbing the heat of the cooled object to convert the liquid refrigerant into a gaseous refrigerant; the output end of the evaporator is also communicated with the input end of the compressor;
the plate heat exchanger comprises a first input end and a first output end which are communicated with each other, and a second input end and a second output end which are communicated with each other; the first input end of the plate heat exchanger is communicated with the output end of the condenser; the first output end of the plate heat exchanger is communicated with the input end of the compressor; the second input end of the plate heat exchanger is communicated with the output end of the heat radiation water tank through a heat exchange pipeline, and the second output end of the plate heat exchanger is communicated with the input end of the heat radiation water tank; the plate heat exchanger is used for realizing heat exchange between the liquid refrigerant and water in the heat dissipation water tank to form gaseous refrigerant, so that the water temperature in the heat dissipation water tank is reduced; wherein, heat exchange pipe passes the inside of battery box and is used for realizing the cooling of battery box.
In the invention, an air conditioning unit for refrigeration and a heat management unit for cooling are integrated to form a vehicle battery cooling system, wherein a condenser, a compressor, a plate heat exchanger and a heat dissipation water tank are used as the heat management unit of a battery box, the condenser is used for absorbing gas state compressed by the compressor, the plate heat exchanger comprises a channel formed by a first input end and a first output end and used for conveying refrigerant, the channel formed by a second input end and a second output end is used for conveying flowing water in the heat dissipation water tank, the refrigerant and the water of the heat dissipation water tank are subjected to heat exchange through the plate heat exchanger to reduce the water temperature and increase the temperature of the refrigerant, so that the refrigerant is converted from liquid state to gas state, and the first output end of the plate heat exchanger is communicated with the compressor and used for compressing the gas refrigerant after temperature rise into, the air conditioning unit and the heat management unit share the compressor and the condenser, and the output end of the condenser is divided into two paths to realize respective operation or joint operation of the air conditioning unit and the heat management unit, so that the setting volume of the heat management unit is saved, and the price cost of the heat management unit is reduced.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a vehicle battery cooling system according to an embodiment of the present invention, and as shown in fig. 1, the vehicle battery cooling system includes a condenser 12, an evaporator 11, a plate heat exchanger 13, a heat radiation water tank 14, and a compressor 15, the vehicle battery cooling system includes an air conditioning unit and a heat management unit of the battery box, and performs a cooling process for an object to be cooled, which is generally an environment in which the air conditioning unit is located and an object in the environment, by using the air conditioning unit. The vehicle battery cooling system can also complete the cooling process of the battery box through the heat management unit.
For the temperature reduction process of the thermal management unit, the thermal management unit comprises a condenser 12, a compressor 15, a plate heat exchanger 13 and a heat dissipation water tank 14, wherein an input end of the plate heat exchanger 13 is communicated with an output end of the condenser 12, and is used for obtaining a liquid refrigerant and absorbing heat of a battery box to convert the liquid refrigerant into a gaseous refrigerant, it should be noted that in the present embodiment, the refrigerant circulates in the condenser 12, the plate heat exchanger 13 and the compressor 15, and the middle needs to be absorbed or released heat to convert between a gaseous state and a liquid state.
Specifically, the plate heat exchanger 13 is formed of a press-formed uneven stainless steel plate. The concave-convex lines between two adjacent plates are combined oppositely at 180 degrees, so that the concave-convex ridge lines between the two plates of the plate heat exchanger 13 form staggered contact points, and after the contact points are combined in a vacuum welding mode, a high-pressure-resistant staggered circulation structure of the plate heat exchanger 13 is formed, and the staggered circulation structures enable cold and hot fluid in the plate heat exchanger 13 to generate strong turbulence so as to achieve a high heat exchange effect. In this embodiment, the plate heat exchanger 13 includes a first channel formed by a first input end and a second output end which are communicated with each other, and further includes a second channel formed by a second input end and a second output end which are communicated with each other, so that heat exchange can be performed between the first channel and the second channel, in this embodiment, the output end of the condenser 12 is communicated with the first input end of the plate heat exchanger 13, the first output end of the plate heat exchanger 13 is communicated with the input end of the compressor 15, the liquid refrigerant output by the condenser 12 is converted into a gaseous refrigerant through the first channel, and then enters the compressor 15, the second input end of the plate heat exchanger 13 is communicated with the output end of the radiator tank 14, the second output end of the plate heat exchanger 13 is communicated with the input end of the radiator tank 14, the water output by the radiator tank 14 is returned to the radiator tank 14 through the second, the liquid refrigerant in the first channel exchanges heat with the water output by the heat dissipation water tank 14 in the second channel, the temperature of the liquid refrigerant rises to form a low-temperature low-pressure gaseous refrigerant, the low-temperature low-pressure gaseous refrigerant is transmitted to the compressor 15 and then compressed by the compressor 15 to form a high-pressure gaseous refrigerant, the water output by the heat dissipation water tank 14 releases heat through the second channel to reduce the water temperature, and the cooled water is output back to the heat dissipation water tank 14 again, so that the circulation can reduce the water temperature in the heat dissipation water tank 14. The heat radiation water tank 14 outputs water through a heat exchange pipe, and the heat exchange pipe can be divided into a plurality of branches and uniformly penetrates through the inside of the battery box 2 in a dispersed manner, so that the temperature of the battery box is reduced. The vehicle battery cooling system enables the battery box to be always at a proper temperature for working, and the service life of the battery and the driving mileage of the vehicle are prolonged.
With continued reference to fig. 1, for the refrigeration process of the air conditioning unit, the air conditioning unit includes a condenser 12, an evaporator 11 and a compressor 15, an input end of the compressor 15 is communicated with an output end of the evaporator 11, the gaseous refrigerant of low temperature and low pressure generated by the evaporator 11 can be sucked into a cylinder and compressed by the compressor 15 to become a gaseous refrigerant of high temperature and high pressure, an output end of the compressor 15 is communicated with an input end of the condenser 12, when the pressure of the gaseous refrigerant is slightly greater than the pressure of the condenser 12, the gaseous refrigerant of high temperature and high pressure in the cylinder is discharged into the condenser 12 under the action of pressure difference, so that the condenser 12 converts the gaseous refrigerant of high temperature and high pressure into a liquid refrigerant, thereafter, the liquid refrigerant is expanded again to pass through the evaporator 11, the evaporator 11 absorbs the heat of the object to be cooled and then is gasified, then the compressor 15 sucks the gaseous refrigerant again to compress, and the cycle is repeated, and the air conditioning unit completes a cycle through four processes of compression, condensation, expansion and evaporation, thereby achieving the effect of refrigeration.
In this embodiment, automobile-used battery cooling system can carry out the refrigeration process, also can carry out the cooling process of battery box, has shared compressor and condenser, and the integrated level is higher, and it is less to occupy the volume, simple to operate to need not set up air conditioning unit system and battery heat management unit alone, effectively reduce the cost of manufacture, improve production efficiency. In addition, in this embodiment, above-mentioned refrigeration process and cooling process can carry out alone, also can carry out simultaneously, guarantees that refrigeration process and cooling process do not influence each other, carries out smoothly.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another vehicle battery cooling system according to an embodiment of the present invention, and optionally, the vehicle battery cooling system may further include: a first electromagnetic valve 16a, which is arranged on a pipeline between the input end of the evaporator 11 and the output end of the condenser 12, and is used for controlling the connection or disconnection between the evaporator 11 and the condenser 12; and the second electromagnetic valve 16b is arranged on a pipeline between the first input end of the plate heat exchanger 13 and the output end of the condenser 12 and is used for controlling the communication or the disconnection between the plate heat exchanger 13 and the condenser 12.
In this embodiment, the first electromagnetic valve 16a and the second electromagnetic valve 16b may control the cooling process of the air conditioning unit and the heat dissipation process of the heat management unit of the battery box to be performed respectively. Specifically, the first electromagnetic valve 16a is disposed between the evaporator 11 and the condenser 12, and the communication or the shutoff between the evaporator 11 and the condenser 12 can be controlled by the opening or the shutoff of the first electromagnetic valve 16a, and similarly, the second electromagnetic valve 16b is disposed between the plate heat exchanger 13 and the condenser 12, and the communication or the shutoff between the plate heat exchanger 13 and the condenser 12 can be controlled by the opening or the shutoff of the second electromagnetic valve 16 b. The first electromagnetic valve 16a and the second electromagnetic valve 16b enable the refrigeration process of the air conditioning unit and the heat dissipation process of the heat management unit of the battery box to be carried out independently or simultaneously, and for example, when the heat dissipation process of the heat management unit is only required to be carried out, the first electromagnetic valve 16a is closed, and the second electromagnetic valve 16b is opened; if the refrigeration process of the air conditioning unit is only needed, the first electromagnetic valve 16a is opened, and the second electromagnetic valve 16b is closed; and if the heat dissipation process of the heat management unit and the refrigeration process of the air conditioning unit need to be carried out simultaneously, the first electromagnetic valve 16a and the second electromagnetic valve 16b are opened simultaneously.
With continued reference to fig. 2, optionally, the vehicle battery cooling system may further include: a first expansion valve 17a, which is disposed on a pipeline between an input end of the evaporator 11 and an output end of the condenser 12, and is used for cooling and depressurizing the liquid refrigerant output from the condenser 12 to the evaporator 11; and the second expansion valve 17b is arranged on a pipeline between the first input end of the plate heat exchanger 13 and the output end of the condenser 12 and is used for reducing the temperature and the pressure of the liquid refrigerant output from the condenser 12 to the plate heat exchanger 13. The first expansion valve 17a can lower the temperature and reduce the pressure of the liquid refrigerant to generate a low-temperature and low-pressure liquid refrigerant, which is convenient to enter the evaporator 11 for evaporation and heat absorption, thereby improving the evaporation efficiency of the evaporator 11. Similarly, the second expansion valve 17b can reduce the pressure and the temperature of the liquid refrigerant to generate a low-temperature and low-pressure liquid refrigerant, so that the liquid refrigerant can conveniently enter the plate heat exchanger 13 to exchange heat with the water flowing into the heat dissipation water tank of the plate heat exchanger 13, and the battery box can be cooled.
Optionally, the vehicle battery cooling system may further include: a first valve core 18a and a second valve core 18 b; the first valve core 18a is arranged on the heat exchange pipeline between the second input end of the plate heat exchanger 13 and the battery box 2; the second valve core 18b is provided on a pipe between the second output end of the plate heat exchanger 13 and the input end of the radiator tank 14. The first valve core 18a and the second valve core 18b can ensure the airtightness in the heat radiation water tank 14, prevent bubbles from generating to influence the heat exchange process, and improve the heat exchange efficiency.
Optionally, with continued reference to fig. 2, the vehicle battery cooling system may further include: a temperature sensor 19; the temperature sensor 19 is disposed in a pipe between the second output end of the plate heat exchanger 13 and the input end of the heat radiation water tank 14, and is configured to measure a temperature of the heat radiation water tank 14 after heat exchange. Can measure the temperature after the heat exchange through temperature sensor 19 to according to battery box 2's temperature demand, adjust the work efficiency of compressor 15 and condenser 12, make the water after the heat exchange can effectively cool down battery box 2 through hot exchange pipe, make battery box 2 be in best operating temperature always, increase battery life and vehicle continuation of the journey mileage.
Optionally, the vehicle battery cooling system may further include: a water pump 10; the water pump 10 is arranged in the heat exchange conduit between the second input of the plate heat exchanger 13 and the battery box 2. The water pump 10 is disposed in the flow channel of the heat dissipation water tank 14, so as to realize rapid and stable circulation between the heat dissipation water tank 14 and the second channel, thereby improving heat dissipation efficiency.
Based on the same conception, the embodiment of the invention also provides a vehicle battery cooling method. The method for cooling a vehicle battery according to this embodiment may be executed by a vehicle battery cooling system according to any embodiment of the present invention, and fig. 3 is a schematic flow chart of a method for cooling a vehicle battery according to an embodiment of the present invention, as shown in fig. 3, where the method according to this embodiment includes the following steps:
and S110, when the battery box needs to be cooled, controlling the output end of the condenser to be communicated with the first input end of the plate heat exchanger, so that the condenser, the plate heat exchanger and the compressor cool water in the heat dissipation water tank.
And step S120, when the air conditioning unit is required to refrigerate, controlling the output end of the condenser to be communicated with the input end of the evaporator, so that the condenser, the evaporator and the compressor realize the refrigeration process of the air conditioning unit.
And S130, when the battery box needs to be cooled and the air conditioning unit is refrigerated, controlling the output end of the condenser to be communicated with the first input end of the plate heat exchanger, and controlling the output end of the condenser to be communicated with the input end of the evaporator.
In the embodiment of the invention, an air conditioning unit for refrigeration and a heat management unit for cooling are integrated to form a vehicle battery cooling system, wherein a condenser, a compressor, a plate heat exchanger and a heat dissipation water tank are used as the heat management unit of a battery box, the condenser is used for absorbing gas state compressed by the compressor, the plate heat exchanger comprises a channel formed by a first input end and a first output end and used for conveying refrigerant, the channel formed by a second input end and a second output end is used for conveying flowing water in the heat dissipation water tank, the refrigerant and the water of the heat dissipation water tank are subjected to heat exchange through the plate heat exchanger to reduce the water temperature and raise the temperature of the refrigerant, so that the refrigerant is converted from liquid state to gas state, and the first output end of the plate heat exchanger is communicated with the compressor and used for compressing the gas refrigerant after temperature rise, the air conditioning unit and the heat management unit share the compressor and the condenser, and the output end of the condenser is divided into two paths to realize respective operation or joint operation of the air conditioning unit and the heat management unit, so that the setting volume of the heat management unit is saved, and the price cost of the heat management unit is reduced.
On the basis of the above embodiment, the vehicle battery cooling system further includes a first electromagnetic valve and a second electromagnetic valve; the cooling method of the vehicle battery specifically comprises the following steps: when the battery box needs to be cooled, the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the output end of the condenser is controlled to be communicated with the first input end of the plate heat exchanger, so that the condenser, the compressor and the plate heat exchanger are used for cooling water in the heat-radiating water tank; when the air conditioning unit is required to refrigerate, the first electromagnetic valve is opened, the second electromagnetic valve is closed, and the output end of the condenser is controlled to be communicated with the input end of the evaporator, so that the condenser, the evaporator and the compressor realize the refrigeration process of the air conditioning unit; when the battery box needs to be cooled and the air conditioning unit is refrigerated, the first electromagnetic valve and the second electromagnetic valve are opened simultaneously, the output end of the condenser is controlled to be communicated with the first input end of the plate-type heat exchanger, and the output end of the condenser is controlled to be communicated with the input end of the evaporator.
In this embodiment, can switch on or turn-off control through the route between first solenoid valve can be to the evaporimeter and the condenser, can switch on or turn-off control through the route between second solenoid valve to plate heat exchanger and the condenser for above-mentioned refrigeration process can carry out alone with the cooling process, also can carry out simultaneously, guarantees that the cooling process of refrigeration process does not influence each other, carries out smoothly.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A vehicle battery cooling system, comprising: the system comprises a condenser, an evaporator, a plate type heat exchanger, a heat dissipation water tank and a compressor;
the compressor is used for compressing gaseous refrigerant; the output end of the compressor is communicated with the input end of the condenser and is used for conveying the compressed gaseous refrigerant to the condenser; the condenser is used for condensing the gaseous refrigerant into liquid refrigerant by exchanging heat with air or water;
the input end of the evaporator is communicated with the output end of the condenser and is used for acquiring the liquid refrigerant and absorbing the heat of the cooled object to convert the liquid refrigerant into a gaseous refrigerant; the output end of the evaporator is also communicated with the input end of the compressor;
the plate heat exchanger comprises a first input end and a first output end which are communicated with each other, and a second input end and a second output end which are communicated with each other; the first input end of the plate heat exchanger is communicated with the output end of the condenser; the first output end of the plate heat exchanger is communicated with the input end of the compressor; the second input end of the plate heat exchanger is communicated with the output end of the heat radiation water tank through a heat exchange pipeline, and the second output end of the plate heat exchanger is communicated with the input end of the heat radiation water tank; the plate heat exchanger is used for realizing heat exchange between the liquid refrigerant and water in the heat dissipation water tank to form gaseous refrigerant, so that the water temperature in the heat dissipation water tank is reduced; wherein, heat exchange pipe passes the inside of battery box and is used for realizing the cooling of battery box.
2. The vehicular battery cooling system according to claim 1, further comprising:
the first electromagnetic valve is arranged on a pipeline between the input end of the evaporator and the output end of the condenser and used for controlling the connection or disconnection between the evaporator and the condenser;
and the second electromagnetic valve is arranged on a pipeline between the first input end of the plate heat exchanger and the output end of the condenser and used for controlling the communication or the shutoff between the plate heat exchanger and the condenser.
3. The vehicular battery cooling system according to claim 1, further comprising:
the first expansion valve is arranged on a pipeline between the input end of the evaporator and the output end of the condenser and used for cooling and depressurizing the liquid refrigerant output from the condenser to the evaporator;
and the second expansion valve is arranged on a pipeline between the first input end of the plate heat exchanger and the output end of the condenser and used for cooling and depressurizing the liquid refrigerant output to the plate heat exchanger by the condenser.
4. The vehicular battery cooling system according to claim 1, further comprising: a first valve core and a second valve core;
the first valve core is arranged on a heat exchange pipeline between the second input end of the plate-type heat exchanger and the battery box; the second valve core is arranged on a pipeline between the second output end of the plate heat exchanger and the input end of the heat radiation water tank.
5. The vehicular battery cooling system according to claim 1, further comprising: a temperature sensor;
the temperature sensor is arranged in a pipeline between the second output end of the plate-type heat exchanger and the input end of the heat dissipation water tank and used for measuring the water temperature of the water of the heat dissipation water tank after heat exchange.
6. The vehicular battery cooling system according to claim 1, further comprising: a water pump;
the water pump is arranged in a heat exchange pipeline between the second input end of the plate-type heat exchanger and the battery box.
7. A method for cooling a vehicle battery, which is applied to the vehicle battery cooling system according to any one of claims 1 to 6, comprising:
when the battery box needs to be cooled, controlling the output end of the condenser to be communicated with the first input end of the plate heat exchanger, so that the condenser, the plate heat exchanger and the compressor cool water in the heat dissipation water tank;
when the air conditioning unit is required to refrigerate, controlling the output end of the condenser to be communicated with the input end of the evaporator, so that the condenser, the evaporator and the compressor realize the refrigerating process of the air conditioning unit;
when the battery box needs to be cooled and the air conditioning unit is refrigerated, the output end of the condenser is communicated with the first input end of the plate heat exchanger, and the output end of the condenser is communicated with the input end of the evaporator.
8. The cooling method of a vehicular battery according to claim 7, wherein the cooling system for a vehicular battery further comprises a first solenoid valve and a second solenoid valve; the cooling method of the vehicle battery specifically comprises the following steps:
when the battery box needs to be cooled, the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the output end of the condenser is controlled to be communicated with the first input end of the plate heat exchanger, so that the condenser, the compressor and the plate heat exchanger are used for cooling water in the heat-radiating water tank;
when the air conditioning unit is required to refrigerate, the first electromagnetic valve is opened, the second electromagnetic valve is closed, and the output end of the condenser is controlled to be communicated with the input end of the evaporator, so that the condenser, the evaporator and the compressor realize the refrigeration process of the air conditioning unit;
when the battery box needs to be cooled and the air conditioning unit is refrigerated, the first electromagnetic valve and the second electromagnetic valve are opened simultaneously to control the output end of the condenser and the first input end of the plate heat exchanger are communicated and control the output end of the condenser and the input end of the evaporator are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037112.XA CN111129652A (en) | 2020-01-14 | 2020-01-14 | Vehicle battery cooling system and cooling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037112.XA CN111129652A (en) | 2020-01-14 | 2020-01-14 | Vehicle battery cooling system and cooling method |
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| CN111129652A true CN111129652A (en) | 2020-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530645A (en) * | 2022-01-19 | 2022-05-24 | 广州东力科技有限公司 | Air-cooled alternating-current variable-frequency parallel system |
| CN117177545A (en) * | 2023-10-30 | 2023-12-05 | 北京环都拓普空调有限公司 | Machine room air conditioner |
-
2020
- 2020-01-14 CN CN202010037112.XA patent/CN111129652A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530645A (en) * | 2022-01-19 | 2022-05-24 | 广州东力科技有限公司 | Air-cooled alternating-current variable-frequency parallel system |
| CN114530645B (en) * | 2022-01-19 | 2023-08-22 | 广州东力科技有限公司 | Air-cooled alternating current variable frequency parallel system |
| CN117177545A (en) * | 2023-10-30 | 2023-12-05 | 北京环都拓普空调有限公司 | Machine room air conditioner |
| CN117177545B (en) * | 2023-10-30 | 2024-02-23 | 北京环都拓普空调有限公司 | Machine room air conditioner |
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