CN113263959B - Electric vehicle charging and liquid cooling heat management system - Google Patents

Electric vehicle charging and liquid cooling heat management system Download PDF

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Publication number
CN113263959B
CN113263959B CN202110767063.XA CN202110767063A CN113263959B CN 113263959 B CN113263959 B CN 113263959B CN 202110767063 A CN202110767063 A CN 202110767063A CN 113263959 B CN113263959 B CN 113263959B
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China
Prior art keywords
cooling
charging
heat exchanger
assembly
battery
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CN202110767063.XA
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CN113263959A (en
Inventor
王惠惠
覃峰
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Songz Automobile Air Conditioning Co Ltd
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Songz Automobile Air Conditioning Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • 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
    • H01M10/615—Heating or keeping warm
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

Abstract

The invention relates to the technical field of electric vehicles, and discloses an electric vehicle charging and liquid cooling thermal management system, which comprises: the vehicle-mounted charging device comprises a vehicle-mounted air conditioner assembly and a battery assembly, wherein the battery assembly comprises a battery pack, a first water pump, a heater and a battery combined heat exchanger; refrigerant in the vehicle air conditioner assembly can flow through the battery pack heat exchanger; the charging station comprises a heat management assembly and a charging assembly, the charging assembly comprises a charging pile charging interface, the heat management assembly can be communicated with the battery combination heat exchanger, and cooling liquid in the heat management assembly can flow through the battery combination heat exchanger. The electric vehicle charging and liquid cooling thermal management system can enable the battery of the electric vehicle to be in a proper temperature range during charging, and is beneficial to improving the charging efficiency and the safety performance and the service life of the battery.

Description

Electric vehicle charging and liquid cooling heat management system
Technical Field
The invention relates to the technical field of electric vehicles, in particular to an electric vehicle charging and liquid cooling thermal management system.
Background
The current new forms of energy electric automobile need avoid open-air to park and open-air charging as far as possible, guarantees to the greatest extent that the temperature of battery can not too low also can not be too high to avoid causing irreversible damage to the battery. Theoretically, the lithium battery is not suitable for long-time charging or high-power charging under the condition that the temperature of the battery core is lower than 0 ℃, because the lithium battery can precipitate metal lithium on the surface of the anode during charging, and the capacity loss and even the structural damage are caused to the battery.
When charging a vehicle in cold weather, it is necessary to stop the vehicle in a warmer room to keep the battery relatively warm. When the battery temperature is too low, it is recommended to start the vehicle first, so that the battery temperature rises and then recharges. Or after the electric vehicle is used up each time, the user directly accesses the vehicle into the charging pile when the interior of the battery pack is in a comfortable temperature area of 20-30 ℃ approximately, and the battery pack is charged in the appropriate temperature area. Similarly, the temperature is high in summer, the new energy electric vehicle can emit a large amount of heat energy when charging, and once the heat dissipation is untimely, the situation of spontaneous combustion of the vehicle can easily occur, so when charging the new energy electric vehicle in summer, a shady and cool place or an underground parking lot can be searched for charging as much as possible, the adaptive temperature can be guaranteed when charging is carried out, and the heat dissipation of the battery is facilitated.
In the prior art, the temperature of a battery is difficult to manage when an electric vehicle is charged, so that the electric energy consumption of the vehicle is easily caused, the charging efficiency is reduced, and the charging time is long.
Disclosure of Invention
The invention aims to provide an electric vehicle charging and liquid cooling thermal management system, which can enable a battery of an electric vehicle to be in a proper temperature range during charging, and is beneficial to improving the charging efficiency, the safety performance of the battery and the service life of the battery.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an electric motor car charges and liquid cooling thermal management system, includes: the vehicle-mounted charging device comprises a vehicle-mounted air conditioner assembly and a battery assembly, the battery assembly comprises a battery pack, a first water pump, a heater and a battery combined heat exchanger, a vehicle-mounted charging interface is arranged on the battery pack, cooling liquid is arranged in the battery pack, and the cooling liquid can circularly flow among the battery pack, the heater and the battery combined heat exchanger under the action of the first water pump; the vehicle-mounted air conditioner assembly is communicated with the battery combined heat exchanger, and a refrigerant in the vehicle-mounted air conditioner assembly can flow through the battery combined heat exchanger; the charging station comprises a thermal management assembly and a charging assembly, the charging assembly comprises a charging pile charging interface, the thermal management assembly can be communicated with the battery combination heat exchanger, and cooling liquid in the thermal management assembly can flow through the battery combination heat exchanger.
As an electric vehicle charging and liquid cooling thermal management system's preferred scheme, thermal management subassembly includes charging station air conditioner subassembly and supplies liquid subassembly, supply liquid subassembly including coolant tank and second water pump, charging station air conditioner subassembly can with the coolant liquid heat transfer in the coolant tank, the second water pump can with coolant liquid in the coolant tank is carried to in the battery combination heat exchanger.
As an electric motor car charges and preferred scheme of liquid cooling thermal management system, the confession liquid subassembly is including filling electric pile cooling interface, be equipped with on-vehicle cooling interface on the battery combination heat exchanger, fill electric pile cooling interface with on-vehicle cooling interface joinable sets up in order to realize coolant liquid in the cooling water tank is in the circulation among the battery combination heat exchanger.
As an electric motor car charges and liquid cooling thermal management system's preferred scheme, the liquid supply subassembly still includes the clearance subassembly, the clearance subassembly includes high-pressure gas jar and holding vessel, high-pressure gas jar communicate in fill electric pile cooling interface's liquid supply pipeline, the holding vessel communicate in fill electric pile cooling interface's return liquid pipeline.
As an electric motor car charges and liquid cooling thermal management system's preferred scheme, the clearance subassembly still includes the clearance water pump, the clearance water pump communicate in the holding tank with between the coolant tank.
As a preferred scheme of the electric vehicle charging and liquid cooling thermal management system, the liquid supply assembly further comprises a self-circulation pipeline, one end of the self-circulation pipeline is communicated with a water outlet of the second water pump, and the other end of the self-circulation pipeline is communicated with the cooling water tank.
As a preferred scheme of the electric vehicle charging and liquid cooling thermal management system, the thermal management assembly further comprises a cooling coil, one part of the cooling coil is wound on a heat exchange component of the charging station air conditioning assembly, and the other part of the cooling coil is arranged in the cooling water tank.
As an electric vehicle charging and liquid cooling thermal management system's preferred scheme, charging station air conditioning subassembly includes second compressor, condenser, third expansion valve and evaporimeter, the evaporimeter the second compressor the condenser the third expansion valve with the evaporimeter is cyclic connection in proper order, cooling coil's partly around locating on the evaporimeter.
As an optimal scheme of the electric vehicle charging and liquid cooling thermal management system, the charging station further comprises a charging pile signal device, and the charging pile signal device is used for receiving a charging signal of the electric vehicle and a temperature signal of the battery pack.
As an electric motor car charges and preferred scheme of liquid cooling thermal management system, on-vehicle air conditioner subassembly includes first compressor, outdoor heat exchanger, first expansion valve, second expansion valve and indoor heat exchanger, outdoor heat exchanger first expansion valve indoor heat exchanger first compressor with outdoor heat exchanger is cyclic connection in proper order, the one end of battery combination heat exchanger is passed through the second expansion valve connect in outdoor heat exchanger, the other end of battery combination heat exchanger connect in first compressor.
The invention has the beneficial effects that:
the invention provides an electric vehicle charging and liquid cooling thermal management system which comprises a vehicle-mounted charging device and a charging station, wherein the vehicle-mounted charging device comprises a vehicle-mounted air conditioner assembly and a battery assembly, cooling liquid in a battery pack in the battery assembly can circularly flow among the battery pack, a heater and a battery combined heat exchanger under the action of a first water pump, and the heater can heat the cooling liquid in the battery pack. The vehicle-mounted air conditioner assembly is communicated with the battery combined heat exchanger, so that a refrigerant in the vehicle-mounted air conditioner assembly can flow through the battery combined heat exchanger to exchange heat with cooling liquid in the battery pack, and the cooling of the cooling liquid in the battery pack by the vehicle-mounted air conditioner assembly is realized. The charging station comprises a thermal management assembly and a charging assembly, the charging assembly comprises a charging pile charging interface used for charging the battery pack, the thermal management assembly is communicated with the battery combination heat exchanger, cooling liquid in the thermal management assembly can flow through the battery combination heat exchanger to exchange heat with the cooling liquid in the battery pack, the battery pack can be cooled or heated while charging, the battery pack of the electric vehicle during charging is enabled to be in a proper temperature range, and the charging efficiency, the safety performance of the battery and the service life of the battery are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electric vehicle charging and liquid cooling thermal management system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a thermal management component of a charging station of an electric vehicle charging and liquid cooling thermal management system according to an embodiment of the present invention.
In the figure:
1. an indoor heat exchanger; 2. a first compressor; 3. an outdoor heat exchanger; 4. a cooling fan; 5. a first expansion valve; 6. a second expansion valve; 7. a battery pack heat exchanger; 8. a first water pump; 9. a heater; 10. an expansion kettle; 11. a battery pack; 12. a vehicle-mounted charging interface; 13. a charging interface of the charging pile; 14. a charging pile signal device; 16. a vehicle-mounted cooling interface; 17. a charging pile cooling interface; 19. a high pressure gas tank; 20. a third electromagnetic valve; 21. a seventh electromagnetic valve; 22. an eighth solenoid valve; 23. a second solenoid valve; 28. a fourth solenoid valve; 32. a first solenoid valve; 34. a second water pump; 35. a self-circulating heat exchanger; 36. a sixth electromagnetic valve; 37. cleaning the water pump; 38. a fifth solenoid valve; 39. a collection tank; 40. a cooling water tank; 41. a cooling coil; 42. an evaporator; 43. a second compressor; 44. a condenser; 45. a third expansion valve.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the statement that a first feature is "on" or "under" a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but are in contact with each other by additional features between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the electric vehicle charging and liquid cooling thermal management system provided by the invention is further described by combining the attached drawings and through a specific implementation mode.
As shown in fig. 1, this embodiment provides an electric vehicle charging and liquid cooling thermal management system, this electric vehicle charging and liquid cooling thermal management system includes on-vehicle charging device, on-vehicle charging device includes on-vehicle air conditioner subassembly and battery pack, battery pack includes battery package 11, first water pump 8 and battery combination heat exchanger 7, battery package 11, first water pump 8, battery combination heat exchanger 7 and battery package 11 are cyclic connection in proper order, be equipped with the coolant liquid in the battery package 11, the coolant liquid can be under the effect of first water pump 8 at battery package 11, circulation flows between heater 9 and battery combination heat exchanger 7, be equipped with on-vehicle interface 12 that charges on the battery package 11, on-vehicle interface 12 that charges is used for dashing into the electric energy to battery package 11. The vehicle-mounted air conditioning assembly is communicated with the battery combined heat exchanger 7, so that a refrigerant in the vehicle-mounted air conditioning assembly can flow through the battery combined heat exchanger 7 to exchange heat with cooling liquid in the battery pack 11, the vehicle-mounted air conditioning assembly can cool the cooling liquid in the battery pack 11, and the cooling of the battery pack 11 is further realized.
Preferably, a heater 9 is arranged on a pipeline between the first water pump 8 and the battery pack heat exchanger 7, and the heater 9 can heat the cooling liquid between the pipelines and further heat the battery pack 11. Further, the heater 9 is an electric heater, so that the heating efficiency is high, the electric energy carried on the electric vehicle can be directly utilized, and the use is convenient. The battery pack 11 is heated or cooled by the vehicle-mounted air conditioning assembly and the heater 9, so that the temperature of the battery pack 11 is in a proper range, and the safety performance and the service life of the battery are guaranteed.
Further, an expansion kettle 10 is arranged between the heater 9 and the battery pack 11, and the expansion kettle 10 can fill and compensate cooling liquid into the pipeline, so that the heat carrying capacity of the cooling liquid is guaranteed.
In this embodiment, the vehicle-mounted air conditioning assembly includes the first compressor 2, the outdoor heat exchanger 3, the first expansion valve 5, the second expansion valve 6 and the indoor heat exchanger 1, and the outdoor heat exchanger 3, the first expansion valve 5, the indoor heat exchanger 1, the first compressor 2 and the outdoor heat exchanger 3 are sequentially connected in a circulating manner, so that the refrigerant in the vehicle-mounted air conditioning assembly can flow in a circulating manner. One end of the battery combination heat exchanger 7 is connected to the outdoor heat exchanger 3 through the second expansion valve 6, and the other end of the battery combination heat exchanger 7 is connected to the first compressor 2, so that a refrigerant in the vehicle-mounted air-conditioning assembly can circularly flow through the battery combination heat exchanger 7, and heat exchange between the vehicle-mounted air-conditioning assembly and the battery combination heat exchanger 7 is realized.
Preferably, the vehicle-mounted air conditioning assembly further comprises a cooling fan 4, wherein the cooling fan 4 is used for introducing fresh air into the outdoor heat exchanger 3, so that the outdoor heat exchanger 3 can exchange heat with the outside conveniently.
In this embodiment, this electric vehicle charging and liquid cooling thermal management system still includes the charging station, the charging station includes thermal management subassembly and the subassembly that charges, the subassembly that charges is including filling electric pile interface 13 that charges, it charges to fill electric pile interface 13 can be connected with on-vehicle interface 12 that charges to battery package 11, thermal management subassembly can communicate with battery combination heat exchanger 7, make the coolant liquid in the thermal management subassembly can flow through the coolant liquid heat transfer in battery combination heat exchanger 7 and the battery package 11, make battery package 11 can be cooled off or heated when charging, the battery package 11 of the electric vehicle when making to charge is in suitable temperature range, charging efficiency has been improved, the security performance and the life of battery. Specifically, the battery combination heat exchanger 7 is provided with a vehicle-mounted cooling interface 16, and cooling liquid in the thermal management assembly can be conveniently connected into the battery combination heat exchanger 7 through the vehicle-mounted cooling interface 16, so that heat exchange is realized.
Further, the charging station also comprises a charging pile signal device 14, wherein the charging pile signal device 14 is used for receiving a charging signal of the electric vehicle and a temperature signal of the battery pack 11, so that the thermal management assembly can heat or cool the battery pack 11 in the electric vehicle according to the temperature of the battery pack 11 after the electric vehicle is charged.
Preferably, the heat management assembly comprises a charging station air conditioning assembly and a liquid supply assembly, wherein the liquid supply assembly comprises a cooling water tank 40 and a second water pump 34, the charging station air conditioning assembly can exchange heat with the cooling liquid in the cooling water tank 40, a water inlet of the second water pump 34 is communicated with the cooling water tank 40, and the second water pump 34 can convey the cooling liquid in the cooling water tank 40 to the battery pack heat exchanger 7.
In this embodiment, the liquid supply assembly still includes fills electric pile cooling interface 17, fills electric pile cooling interface 17 and on-vehicle cooling interface 16 and can dismantle the connection setting, has realized that the coolant liquid in cooling water tank 40 can conveniently insert in battery combination heat exchanger 7 and the circulation and the heat transfer in battery combination heat exchanger 7.
It can be understood that charging pile cooling interface 17 and charging pile charging interface 13 are paired one by one, so that the charging station heats or refrigerates battery pack 11 of the electric vehicle while charging the electric vehicle. Further, fill electric pile cooling interface 17 and fill electric pile interface 13 that charges and all be equipped with a plurality ofly for this charging station can charge a plurality of electric motor cars simultaneously. The specific distribution of a plurality of charging pile cooling interfaces 17 and charging pile charging interface 13 in the charging station, and technical personnel in the art can design according to actual conditions, and this is not repeated here.
Preferably, the liquid supply assembly further comprises a self-circulation pipeline, one end of the self-circulation pipeline is communicated with a water outlet of the second water pump 34, the other end of the self-circulation pipeline is communicated with the cooling water tank 40, and when the electric vehicle is not charged, the cooling liquid in the cooling water tank 40 flows back to the cooling water tank 40 through the second water pump 34 to realize self-circulation. Further, a self-circulation heat exchanger 35 is arranged in the self-circulation pipeline, so that the cooling liquid in the self-circulation pipeline exchanges heat with the outside.
Preferably, the liquid supply assembly further comprises a cleaning assembly, the cleaning assembly comprises a high-pressure gas tank 19 and a collecting tank 39, the high-pressure gas tank 19 is communicated with a liquid supply pipeline of the charging pile cooling interface 17, and the collecting tank 39 is communicated with a liquid return pipeline of the charging pile cooling interface 17. When the high-pressure gas tank 19 injects high-pressure gas into the liquid supply pipeline of the charging pile cooling interface 17, the residual cooling liquid in the liquid supply pipeline of the charging pile cooling interface 17 is blown into the liquid supply pipeline of the vehicle-mounted cooling interface 16, the liquid return pipeline of the vehicle-mounted cooling interface 16 and the liquid return pipeline of the charging pile cooling interface 17 in sequence, and finally flows into the collecting tank 39, so that the recovery of the cooling liquid is realized.
It can be understood that the cleaning assembly is the same with the quantity that fills electric pile cooling interface 17, cleaning assembly with fill electric pile cooling interface 17 one-to-one setting, the cleaning assembly that corresponds the setting can be with every fill electric pile cooling interface 17 and every on-vehicle coolant liquid clean up that charges in interface 12.
Further, the cleaning assembly further comprises a cleaning water pump 37, the cleaning water pump 37 is communicated between the collecting tank 39 and the cooling water tank 40, and the cleaning water pump 37 can convey the cooling liquid collected in the collecting tank 39 to the cooling water tank 40 for reuse.
Preferably, the thermal management assembly further comprises a cooling coil 41, one part of the cooling coil 41 is connected with a heat exchange component of the charging station air conditioning assembly for heat exchange, the other part of the cooling coil 41 is arranged in the cooling water tank 40, and the cooling coil 41 can rapidly transfer heat of the charging station air conditioning assembly to cooling liquid in the cooling water tank 40.
In the present embodiment, the charging station air conditioning assembly includes a second compressor 43, a condenser 44, a third expansion valve 45 and an evaporator 42, the second compressor 43, the condenser 44, the third expansion valve 45 and the evaporator 42 are sequentially and circularly connected, so that the refrigerant in the charging station air conditioning assembly can circularly flow, the cooling coil 41 is connected with the evaporator 42 for heat exchange, and the charging station air conditioning assembly transfers heat to the cooling liquid in the cooling water tank 40 through the evaporator 42 and the cooling coil 41.
It will be appreciated that a number of valves are provided in the liquid supply assembly in order to perform the functions associated with the liquid supply assembly. Specifically, the delivery port department of second water pump 34 is equipped with first solenoid valve 32, and the liquid supply pipeline that fills electric pile cooling interface 17 is equipped with second solenoid valve 23, and high-pressure gas jar 19 is connected on filling the pipeline between electric pile cooling interface 17 and the second solenoid valve 23, is equipped with third solenoid valve 20 on the pipeline that high-pressure gas jar 19 and the liquid supply pipeline that fills electric pile cooling interface 17 are connected.
The return water mouth department of cooling water tank 40 is equipped with fourth solenoid valve 28, connect between the delivery port of second water pump 34 and first solenoid valve 32 through seventh solenoid valve 21 from the one end of circulation pipeline, connect between the return water mouth of cooling water tank 40 and fourth solenoid valve 28 from the other end of circulation pipeline, the delivery port of clearance water pump 37 is connected between the return water mouth of cooling water tank 40 and fourth solenoid valve 28, be equipped with fifth solenoid valve 38 between collection tank 39 and the clearance water pump 37, be equipped with sixth solenoid valve 36 on filling electric pile cooling connector 17's the return water pipeline, the water inlet of collection tank 39 is connected between sixth solenoid valve 36 and filling electric pile cooling connector 17 through eighth solenoid valve 22.
It is understood that a controller is also provided in the charging station to control the opening and closing of the first solenoid valve 32, the second solenoid valve 23, the third solenoid valve 20, the fourth solenoid valve 28, the fifth solenoid valve 38, and the sixth solenoid valve 36. In this embodiment, the controller may be a centralized or distributed controller, for example, the controller may be a single-chip microcomputer or may be composed of a plurality of distributed single-chip microcomputers, and the single-chip microcomputers may run a control program to control the opening and closing of the first electromagnetic valve 32, the second electromagnetic valve 23, the third electromagnetic valve 20, the fourth electromagnetic valve 28, the fifth electromagnetic valve 38, and the sixth electromagnetic valve 36.
In this embodiment, the controller may be a centralized or distributed controller, for example, the controller may be a single-chip microcomputer or may be formed by a plurality of distributed single-chip microcomputers, and a control program may be run in the single-chip microcomputers to control the opening and closing of each electromagnetic valve, so that each pipeline can realize its function.
The electric vehicle charging and liquid cooling thermal management system provided by the embodiment has the following specific working processes:
when the vehicle runs in summer, the battery pack 11 is cooled by the vehicle-mounted air conditioner assembly. After the high-temperature and high-pressure refrigerant discharged by the first compressor 2 is condensed by the outdoor heat exchanger 3, one part of the high-temperature and high-pressure refrigerant passes through the first expansion valve 5 to become low-temperature and low-pressure refrigerant, flows through the indoor heat exchanger 1 to cool the space in the vehicle, and the other part of the low-temperature and low-pressure refrigerant passes through the second expansion valve 6 to become low-temperature and low-pressure refrigerant, flows through the left part of the battery combined heat exchanger 7 shown in the figure 1 to cool the cooling liquid in the loop of the battery pack 11, and then the two paths of refrigerants are converged and then return to the first compressor 2 again. The temperature of the cooling liquid in the battery pack 11 rises after absorbing the heat of the battery pack 11, the cooling liquid enters the battery combination heat exchanger 7 through the expansion kettle 10, the first water pump 8 and the heater 9 to exchange heat with the low-temperature and low-pressure refrigerant in the battery combination heat exchanger 7, the cooling liquid enters the battery pack 11 again after the temperature of the cooling liquid is reduced, the heat of the battery pack 11 is absorbed, and the temperature of the battery pack 11 is reduced.
When the battery pack 11 needs to be heated during vehicle running in winter, the heater 9 works, the cooling liquid flowing out of the battery pack 11 flows through the expansion water kettle 10 and the first water pump 8, is heated in the heater 9 to be heated, and then returns to the battery pack 11 through the battery combined heat exchanger 7 to heat the battery. Before a vehicle stops for a long time in winter and runs, when a battery pack 11 needs to be preheated in advance, a vehicle-mounted cooling interface 16 is connected with a charging pile cooling interface 17, a charging pile signal device 14 receives a signal that the vehicle needs to be heated, high-temperature cooling liquid in a charging station enters the right part of a battery combined heat exchanger 7 shown in figure 1 through the charging pile cooling interface 17 and the vehicle-mounted cooling interface 16 to heat low-temperature cooling liquid from the battery pack 11, the low-temperature cooling liquid returns to the battery pack 11 to heat the battery after the temperature of the low-temperature cooling liquid rises, the heat of the low-temperature cooling liquid is absorbed by the battery pack 11, then returns to the battery combined heat exchanger 7 again to absorb the heat of the high-temperature cooling liquid through an expansion kettle 10, a first water pump 8 and a heater 9, and the high-temperature cooling liquid returns to a heat management assembly through the vehicle-mounted cooling interface 16 and the charging pile cooling interface 17 to continue heating after the heat of the high-temperature cooling liquid is absorbed. After the battery package 11 rises to suitable temperature, fill electric pile signalling device 14 and receive this signal, stop the heating promptly, on-vehicle cooling interface 16 and fill electric pile cooling interface 17 disconnection this moment.
When the vehicle is parked in summer, the temperature of the battery is high, and the temperature of the battery is increased in the charging process, so that the temperature of the battery needs to be controlled within a proper range for charging. After the vehicle is parked, the vehicle-mounted charging interface 12 is connected with the charging pile charging interface 13, the vehicle-mounted cooling interface 16 is connected with the charging pile cooling interface 17, the charging pile signal device 14 receives a charging signal of the vehicle, and the charging station starts to charge and cool the vehicle.
In the heat management assembly, a high-temperature high-pressure refrigerant flows out of the second compressor 43, is condensed by the condenser 44 and throttled by the third expansion valve 45 to become a low-temperature low-pressure refrigerant, enters the evaporator 42 to absorb heat of cooling liquid in the cooling coil 41, exchanges heat with the cooling liquid in the cooling water tank 40 after the temperature of the cooling liquid is reduced, the cooling liquid in the cooling water tank 40 is always kept at a lower temperature, and the charging pile cooling interface 17 is connected to immediately cool the battery pack 11 of the electric vehicle when the electric vehicle stops.
When the vehicle is not charged, the cooling liquid in the cooling water tank 40 returns to the cooling water tank 40 through the second water pump 34, the seventh electromagnetic valve 21 and the self-circulation heat exchanger 35 to realize self-circulation.
When the electric vehicle is charged, the vehicle-mounted cooling interface 16 is connected with the charging pile cooling interface 17, after the charging pile signal device 14 receives a signal of the vehicle battery pack 11, the first electromagnetic valve 32, the second electromagnetic valve 23, the sixth electromagnetic valve 36 and the fourth electromagnetic valve 28 are opened, low-temperature cooling liquid in the cooling water tank 40 enters the battery combination heat exchanger 7 through the charging pile cooling interface 17 and the vehicle-mounted cooling interface 16 through the second water pump 34, the first electromagnetic valve 32 and the second electromagnetic valve 23, heat of the cooling liquid from the battery pack 11 in the battery combination heat exchanger 7 is absorbed, the temperature of the cooling liquid in the battery pack 11 is reduced and then returns to the battery pack 11 to absorb the heat of the battery, and the safe temperature of the battery during charging is ensured; at this time, the coolant from the coolant tank 40 absorbs heat and has a raised temperature, and then returns to the coolant tank 40 through the vehicle-mounted cooling interface 16 and the charging pile cooling interface 17 via the sixth electromagnetic valve 36 and the fourth electromagnetic valve 28 to be cooled.
After the vehicle is charged, the first electromagnetic valve 32, the second electromagnetic valve 23, the sixth electromagnetic valve 36 and the fourth electromagnetic valve 28 are closed, the third electromagnetic valve 20 and the eighth electromagnetic valve 22 are opened, at this time, the high-pressure air tank 19 operates, the high-pressure air flows through the third electromagnetic valve 20 and the vehicle-mounted cooling interface 16 connected with the charging pile cooling interface 17 to blow out the cooling liquid in the vehicle battery combined heat exchanger 7, the residual cooling liquid flows through the vehicle-mounted cooling interface 16 and the charging pile cooling interface 17 and flows through the eighth electromagnetic valve 22 to return to the collecting tank 39 of the cooling liquid, and the cooling liquid in the collecting tank 39 returns to the cooling water tank 40 again through the fifth electromagnetic valve 38 and the cleaning water pump 37 to be cooled. After the residual cooling liquid in the pipeline is recovered, the third electromagnetic valve 20 and the eighth electromagnetic valve 22 are closed, the vehicle-mounted cooling interface 16 is disconnected with the charging pile cooling interface 17, and the whole charging process is completed.
When the vehicle is parked for a long time in winter and the temperature of the battery is low, after the vehicle is parked, the vehicle-mounted charging interface 12 is connected with the charging pile charging interface 13, the vehicle-mounted cooling interface 16 is connected with the charging pile cooling interface 17, the charging pile signal device 14 receives a charging signal of the vehicle, and the charging station starts to charge and heat the vehicle.
In the heat management assembly, the high-temperature refrigerant heats the coolant in the cooling coil 41, the coolant exchanges heat with the coolant in the cooling water tank 40 after the temperature of the coolant rises, the coolant in the cooling water tank 40 is always kept at a high temperature, and the charging pile cooling interface 17 is connected to immediately heat the battery pack 11 of the electric vehicle when the electric vehicle is parked.
Likewise, when the vehicle is not being charged, the coolant in the coolant tank 40 is returned to the coolant tank 40 through the second water pump 34, the seventh electromagnetic valve 21, and the self-circulation heat exchanger 35 to achieve self-circulation.
Similarly, when the electric vehicle is charged, the vehicle-mounted cooling interface 16 is connected with the charging pile cooling interface 17, after the charging pile signal device 14 receives a signal of the vehicle battery pack 11, the first electromagnetic valve 32, the second electromagnetic valve 23, the sixth electromagnetic valve 36 and the fourth electromagnetic valve 28 are opened, high-temperature cooling liquid in the cooling water tank 40 enters the battery combination heat exchanger 7 through the charging pile cooling interface 17 and the vehicle-mounted cooling interface 16 by virtue of the second water pump 34, the first electromagnetic valve 32 and the second electromagnetic valve 23 and passes through the charging pile cooling interface 17 and the vehicle-mounted cooling interface 16, heat is transferred to low-temperature cooling liquid from the battery pack 11 in the battery combination heat exchanger 7, and after the temperature of the cooling liquid in the battery pack 11 is increased, the cooling liquid returns to the battery pack 11 to heat the battery pack, so that the safe temperature is ensured when the battery is charged; at this time, the cooling liquid from the cooling water tank 40 releases heat, and after the temperature is lowered, the cooling liquid returns to the cooling water tank 40 through the vehicle-mounted cooling connector 16 and the charging pile cooling connector 17 via the sixth electromagnetic valve 36 and the fourth electromagnetic valve 28 and is heated again.
Similarly, when the vehicle is charged, the first electromagnetic valve 32, the second electromagnetic valve 23, the sixth electromagnetic valve 36 and the fourth electromagnetic valve 28 are closed, the third electromagnetic valve 20 and the eighth electromagnetic valve 22 are opened, the high-pressure air tank 19 is operated, the high-pressure air blows out the coolant in the vehicle battery pack heat exchanger 7 through the third electromagnetic valve 20 and the vehicle-mounted cooling interface 16 connected with the charging pile cooling interface 17, the residual coolant flows through the vehicle-mounted cooling interface 16 and the charging pile cooling interface 17 through the eighth electromagnetic valve 22 and returns to the coolant collection tank 39, and the coolant in the collection tank 39 returns to the cooling water tank 40 again through the fifth electromagnetic valve 38 and the cleaning water pump 37 for cooling. After the residual cooling liquid in the pipeline is recovered, the third electromagnetic valve 20 and the eighth electromagnetic valve 22 are closed, the vehicle-mounted cooling interface 16 is disconnected with the charging pile cooling interface 17, and the whole charging process is completed.
It is noted that reference throughout this specification to "some embodiments," "other embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (7)

1. The utility model provides an electric motor car charges and liquid cooling thermal management system which characterized in that includes:
the vehicle-mounted charging device comprises a vehicle-mounted air conditioner assembly and a battery assembly, the battery assembly comprises a battery pack (11), a first water pump (8), a heater (9) and a battery combined heat exchanger (7), a vehicle-mounted charging interface (12) is arranged on the battery pack (11), cooling liquid is arranged in the battery pack (11), and the cooling liquid can circularly flow among the battery pack (11), the heater (9) and the battery combined heat exchanger (7) under the action of the first water pump (8); the vehicle-mounted air conditioning assembly is communicated with the battery combined heat exchanger (7), and refrigerant in the vehicle-mounted air conditioning assembly can flow through the battery combined heat exchanger (7);
the charging station comprises a thermal management assembly and a charging assembly, the charging assembly comprises a charging pile charging interface (13), the thermal management assembly can be communicated with the battery pack heat exchanger (7), and cooling liquid in the thermal management assembly can flow through the battery pack heat exchanger (7);
the heat management assembly comprises a charging station air conditioning assembly and a liquid supply assembly, the liquid supply assembly comprises a cooling water tank (40) and a second water pump (34), the charging station air conditioning assembly can exchange heat with cooling liquid in the cooling water tank (40), and the second water pump (34) can convey the cooling liquid in the cooling water tank (40) to the battery pack heat exchanger (7);
the liquid supply assembly comprises a charging pile cooling interface (17), a vehicle-mounted cooling interface (16) is arranged on the battery combined heat exchanger (7), and the charging pile cooling interface (17) and the vehicle-mounted cooling interface (16) can be connected and arranged to realize circulation of cooling liquid in the cooling water tank (40) in the battery combined heat exchanger (7);
the liquid supply assembly further comprises a cleaning assembly, the cleaning assembly comprises a high-pressure gas tank (19) and a collecting tank (39), the high-pressure gas tank (19) is communicated with a liquid supply pipeline of the charging pile cooling interface (17), and the collecting tank (39) is communicated with a liquid return pipeline of the charging pile cooling interface (17).
2. The electric vehicle charging and liquid cooling thermal management system of claim 1, wherein the purge assembly further comprises a purge water pump (37), the purge water pump (37) being in communication between the collection tank (39) and the cooling water tank (40).
3. The electric vehicle charging and liquid cooling thermal management system of claim 1, wherein the liquid supply assembly further comprises a self-circulation pipeline, one end of the self-circulation pipeline is communicated with a water outlet of the second water pump (34), and the other end of the self-circulation pipeline is communicated with the cooling water tank (40).
4. The electric vehicle charging and liquid cooling thermal management system of claim 1, wherein the thermal management assembly further comprises a cooling coil (41), a portion of the cooling coil (41) being in thermal communication with a heat exchanging component of the charging station air conditioning assembly, another portion of the cooling coil (41) being disposed in the cooling water tank (40).
5. The electric vehicle charging and liquid cooling thermal management system of claim 4, wherein the charging station air conditioning assembly comprises a second compressor (43), a condenser (44), a third expansion valve (45), and an evaporator (42), wherein the evaporator (42), the second compressor (43), the condenser (44), the third expansion valve (45), and the evaporator (42) are sequentially connected in a circulating manner, and a portion of the cooling coil (41) exchanges heat with the evaporator (42).
6. The system as claimed in claim 1, further comprising a charging post signaling device (14), wherein the charging post signaling device (14) is configured to receive a charging signal of the electric vehicle and a temperature signal of the battery pack (11).
7. The electric vehicle charging and liquid cooling thermal management system according to claim 1, wherein the vehicle-mounted air conditioning assembly comprises a first compressor (2), an outdoor heat exchanger (3), a first expansion valve (5), a second expansion valve (6) and an indoor heat exchanger (1), the outdoor heat exchanger (3), the first expansion valve (5), the indoor heat exchanger (1), the first compressor (2) and the outdoor heat exchanger (3) are sequentially connected in a circulating manner, one end of the battery pack heat exchanger (7) is connected to the outdoor heat exchanger (3) through the second expansion valve (6), and the other end of the battery pack heat exchanger (7) is connected to the first compressor (2).
CN202110767063.XA 2021-07-07 2021-07-07 Electric vehicle charging and liquid cooling heat management system Active CN113263959B (en)

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