CN214928819U - Electric motor car thermal management system and electric motor car - Google Patents

Abstract

The utility model provides an electric motor car thermal management system. The electric vehicle heat management system integrates an air conditioning system, the air conditioning system comprises a refrigerant, a compressor, a condenser, a throttling element, an evaporator and an air conditioning circulating pipeline, and the electric vehicle heat management system further comprises a battery pack, a charging and distributing assembly and a first cooling pipeline; the charging assembly is connected with the battery pack, the air conditioner circulating pipeline comprises an air conditioner cooling section, the evaporator is installed on the air conditioner cooling section, the compressor and the throttling element are both located outside the air conditioner cooling section, and the first cooling pipeline is connected with the air conditioner cooling section in parallel. The utility model provides an electric motor car thermal management system is favorable to reducing the radiator total number in the vehicle, improves the operation economic nature of vehicle, is favorable to realizing the lightweight design of vehicle. The application also relates to an electric vehicle.

Description

Electric motor car thermal management system and electric motor car

Technical Field

The utility model relates to an electric automobile technical field especially relates to an electric motor car thermal management system and electric motor car.

Background

In some current electric vehicles, each heating device of the electric vehicle has its own radiator, and a cooling medium flows through the heating device and absorbs heat, and then flows into the radiator, and dissipates heat in the radiator. These radiators are usually arranged in the front compartment in line with the condenser of the air conditioning system, and in order to dissipate the heat absorbed by the radiators into the air, it is usually necessary to enlarge the openings of the front grille of the vehicle, which increases the running resistance of the vehicle and is not favorable for the running economy of the vehicle. In addition, the multilayer arrangement of the cooling modules is also not beneficial to the light weight design of the vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electric vehicle heat management system, the air conditioning system of the electric vehicle is integrated to this system, in the electric vehicle heat management system, the condenser of the air conditioning system is as the radiator of charging assembly simultaneously; the electric vehicle heat management system is beneficial to reducing the total number of radiators in a vehicle, improving the running economy of the vehicle and realizing the light-weight design of the vehicle.

The utility model also provides an electric motor car of having above-mentioned electric motor car thermal management system.

According to the utility model discloses an electric motor car thermal management system of first aspect embodiment includes: a battery pack; the charging and distributing assembly is connected with the battery pack and used for converting the voltage and the current of the input battery pack; first cooling line, with the air conditioner cooling section is parallelly connected, first cooling line can supply the refrigerant circulation, first cooling line with the charging assembly is connected, and is right the charging assembly cools off.

According to the utility model discloses electric motor car thermal management system has following beneficial effect at least: the utility model provides an electric motor car thermal management system, with the integrated setting of air conditioning system of electric motor car, the cold volume of utilizing the refrigerant for the cockpit is cooled off the charging assembly, and the condenser is shared with the evaporimeter to the charging assembly simultaneously, has reduced the required radiator total number of vehicle, and the vehicle also consequently need not the preceding grid opening of excessive increase. The utility model provides an electric motor car thermal management system can reduce the radiator total number in the vehicle, improves the operation economic nature of vehicle, also is favorable to realizing the lightweight and the compactization design of vehicle.

According to some embodiments of the present invention, the electric vehicle thermal management system further comprises a first control valve installed on the first cooling pipeline, the first control valve being configured to change a flow rate of the refrigerant flowing through the first cooling pipeline.

According to some embodiments of the utility model, electric motor car thermal management system still includes the second cooling tube way, the second cooling tube way with the air conditioner cooling section is parallelly connected, the refrigerant can get into in the second cooling tube way, the second cooling tube way with the battery package is connected, and is right the battery package cools off.

According to some embodiments of the present invention, the electric vehicle thermal management system further comprises a second control valve installed on the second cooling pipeline, the second control valve being configured to change a flow rate of the refrigerant flowing through the second cooling pipeline.

According to some embodiments of the utility model, the battery package includes cooling plate and a plurality of battery cell, a plurality of battery cell all with the cooling plate laminating, the cooling plate has the cooling runner, the second cooling tube with the cooling plate is connected, just the inner chamber of second cooling tube with the cooling runner intercommunication.

According to some embodiments of the present invention, the electric vehicle thermal management system further comprises: the electric drive assembly is connected with the battery pack, the battery pack can supply power to the electric drive assembly, and the electric drive assembly is used for driving a vehicle to move; and the third cooling pipeline is connected with the air conditioner cooling section in parallel, and the third cooling pipeline is connected with the electric drive assembly so as to cool the electric drive assembly.

According to some embodiments of the present invention, the electric vehicle thermal management system further comprises a third control valve installed on the third cooling pipeline, the third control valve being used for changing the flow rate of the refrigerant flowing through the third cooling pipeline.

According to some embodiments of the present invention, the electric vehicle thermal management system further comprises a third control valve installed on the first cooling pipeline, the third control valve being used for changing the flow rate of the refrigerant flowing through the first cooling pipeline.

According to the utility model discloses a some embodiments, electric motor car thermal management system still includes the fourth control valve, the fourth control valve is installed on the air conditioner supplies cold section, the fourth control valve is used for the break-make the air conditioner supplies cold section.

According to some embodiments of the utility model, fill the distribution assembly and include box and first linking pipeline, a part setting of first linking pipeline is in the box, first linking pipeline includes first input and first output, first input and first output set up outside the box, first input with first output all with first cooling tube connects.

According to the utility model discloses electric motor car of second aspect embodiment, include as above electric motor car thermal management system.

According to the utility model discloses electric motor car has following beneficial effect at least: the structure is simple and compact, and the running economy is good.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

FIG. 1 is an overall schematic view of a thermal management system for an electric vehicle;

FIG. 2 is a simplified schematic diagram of the connection of a first cooling circuit to a charging assembly according to some embodiments;

fig. 3 is a simplified diagram of the connection between the second cooling pipeline and the battery pack according to some embodiments.

Reference numerals: 101-condenser, 102-fan, 103-throttle, 104-compressor, 105-fourth control valve, 106-evaporator, 107-first control valve, 108-charging power assembly, 109-third control valve, 110-electric drive assembly, 111-second control valve, 112-battery pack, 113-air conditioner cooling supply section, 114-first cooling pipeline, 115-third cooling pipeline, 116-second cooling pipeline, 117-air conditioner system, 201-box, 202-first connecting pipeline, 203-first input, 204-first output, 301-cooling plate, 302-battery unit.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" 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 present 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.

The utility model provides an electric motor car thermal management system, referring to fig. 1, electric motor car thermal management system has integrated air conditioning system 117, and air conditioning system 117 includes refrigerant, compressor 104, condenser 101, throttling element 103, evaporimeter 106 and air conditioner circulating line, and in fig. 1, this section of ring line of A-B-I-J-A is air conditioner circulating line. In addition, the "pipeline" in the present invention may refer to a pipeline including only one pipe, or may refer to a pipeline including a plurality of pipes.

Referring to fig. 1, a refrigerant can circulate in an air-conditioning cycle line, a compressor 104, a condenser 101, a throttle 103, and an evaporator 106 are all connected to the air-conditioning cycle line, and the refrigerant can flow through the compressor 104, the condenser 101, the throttle 103, and the evaporator 106 in this order in a direction in which the refrigerant circulates. The throttle 103 may be specifically configured as an electronic expansion valve or a capillary tube, and the pressure of the refrigerant is reduced after passing through the throttle 103. In the system shown in fig. 1, the throttle member 103 is configured as an electronic expansion valve, which is advantageous in that the electronic expansion valve can adjust the flow rate or pressure of the refrigerant more flexibly, and the operating condition of the air conditioning system can be adjusted more flexibly. The throttle principle, the structure of the electronic expansion valve and the mechanism of the capillary tube are well known in the refrigeration field and will not be described in detail here.

The refrigeration process of the air conditioning system is briefly described as follows: after the gaseous refrigerant enters the compressor 104, the compressor 104 compresses the gaseous refrigerant to increase the temperature and pressure of the gaseous refrigerant; the refrigerant (gaseous) with high temperature and high pressure leaves the compressor 104 and enters the condenser 101, and the refrigerant is condensed into liquid; after leaving the condenser 101, the refrigerant flows to the throttling element 103, and the pressure of the liquid refrigerant is reduced after passing through the throttling element 103; after the refrigerant passes through the throttle member 103, the refrigerant of low pressure enters the evaporator 106 and is evaporated into a gaseous state in the evaporator 106; after leaving the evaporator 106, the gaseous refrigerant re-enters the compressor 104 and begins the next refrigeration cycle.

Referring to fig. 1, the air conditioning system 117 further includes a fan 102, and an impeller of the fan 102 rotates and disturbs air to generate an air flow, and after the air flow passes through the condenser 101, heat released from the refrigerant in the condenser 101 (heat release required by condensation of the refrigerant) is absorbed by the air. Similarly, when the air flow generated by the rotation of the fan 102 flows through the evaporator 106, the temperature of the air is reduced (the refrigerant evaporates to absorb heat, and a part of the heat of the air is absorbed), and the low-temperature air enters the passenger compartment of the vehicle to cool the passenger compartment (only the fan 102 used with the condenser 101 is shown in fig. 1, and the fan 102 used with the evaporator 106 is not shown).

Referring to fig. 1, the thermal management system of the electric vehicle further includes a battery pack 112, a charging assembly 108 and a first cooling pipeline 114, the pipeline in the C-H section in fig. 1 is the first cooling pipeline 114, and the battery pack 112 is used for supplying power to the electric vehicle, including supplying power to driving components and supplying power to on-board electronic equipment. The charging and distributing assembly 108 is connected to the battery pack 112, the charging and distributing assembly 108 is used for converting voltage and current (including but not limited to ac/dc conversion, voltage reduction, etc.) to be input into the battery pack 112, the charging and distributing assembly 108 specifically includes electronic devices such as IGBTs, capacitors, inductors, etc., and specific circuit configurations of the charging and distributing assembly 108 are well known in the art and will not be described in detail herein.

Referring to fig. 1, the air conditioning circulation pipeline includes an air conditioning cooling section 113, the pipeline in the sections B to I in fig. 1 is the air conditioning cooling section 113, the evaporator 106 is installed on the air conditioning cooling section 113, and the compressor 104 and the throttling element 103 are both located outside the air conditioning cooling section 113. The first cooling line 114 is connected in parallel with the air conditioner cooling section 113, and a part of the refrigerant passing through the throttle member 103 enters the evaporator 106, and another part flows through the first cooling line 114. The first cooling line 114 is coupled to the charging assembly 108 such that the refrigerant flowing through the charging assembly 108 is capable of absorbing heat generated by the charging assembly 108. Specifically, referring to fig. 2, a simple connection between the charging assembly 108 and the first cooling circuit 114 is: the charging and distribution assembly 108 further comprises a box 201 and a first connecting pipeline 202, electronic devices of the charging and distribution assembly 108 are accommodated in the box 201, a part of the first connecting pipeline 202 is arranged in the box, the first connecting pipeline 202 comprises a first input end 203 and a first output end 204, and the first input end 203 and the first output end 204 are exposed outside the box; the portion of the first engaging pipe 202 located inside the box 201 is in contact with the electronic device to be cooled, the first input end 203 and the first output end 204 are both connected to the first cooling pipe 114, the refrigerant flows through the first engaging pipe 202 and flows through the inside of the box 201, and the low temperature refrigerant absorbs heat generated by the electronic device during operation.

The utility model provides an electric motor car thermal management system, with the air conditioning system 117 who has integrateed the electric motor car, the cold volume of utilizing the refrigerant for passenger cabin refrigeration cools off charging and distributing assembly 108, and charging and distributing assembly 108 and evaporimeter 106 sharing condenser 101 have reduced the required radiator total number of vehicle simultaneously, and the vehicle also consequently need not the preceding grid opening of excessive increase. The utility model provides an electric motor car thermal management system can reduce the radiator total number in the vehicle, improves the operation economic nature of vehicle, also is favorable to realizing the lightweight and the compactization design of vehicle.

Referring to fig. 1, in some embodiments, the thermal management system of the electric vehicle further includes a second cooling line 116, the line in sections E-F in fig. 1 is the second cooling line 116, and the second cooling line 116 is connected in parallel with the air conditioner cooling section 113, that is, for the refrigerant after passing through the throttling element 103, a part of the refrigerant also enters the second cooling line 116; the second cooling line 116 is connected to the battery pack 112, and the refrigerant flowing through the battery pack 112 absorbs heat generated from the battery pack 112. In this arrangement, the cooling capacity of the refrigerant of the air conditioning system 117 can be used for cooling the battery pack 112, and the total number of radiators required by the vehicle is further reduced (which is equivalent to that of the radiators of the battery pack 112 are not required), so that the structural complexity of the whole electric vehicle is further reduced, and the structural compactness of the electric vehicle is improved. Referring to fig. 3, fig. 3 shows a simple and low cost connection of the second cooling line 116 to the battery 112. Specifically, referring to fig. 3, battery pack 112 includes a cooling plate 301 and a plurality of battery cells 302, wherein the exterior of cooling plate 301 is attached to the exterior of battery cells 302, winding cores and electrolyte are provided inside battery cells 302, and battery cells 302 are used for storing electric energy; the cooling plate 301 has a cooling flow channel (the cooling flow channel is not specifically shown) therein, and the second cooling pipeline 116 is connected to the cooling plate 301 such that the lumen of the second cooling pipeline 116 communicates with the cooling flow channel, and a low-temperature refrigerant absorbs heat of the battery cells when flowing in the cooling flow channel.

Referring to FIG. 1, in some embodiments, the electric vehicle thermal management system further includes an electric drive assembly 110 and a third cooling circuit 115, and the section D-G circuit in FIG. 1 is the third cooling circuit 115. The third cooling line 115 is connected in parallel with the air conditioning cold supply section 113, i.e. for the refrigerant after passing through the throttle 103, a part of it also enters the third cooling line 115. The electric drive assembly 110 is connected with a battery pack 112, the battery pack 112 supplies power to the electric drive assembly 110, and the electric drive assembly 110 is used for driving a vehicle to move; the electric drive assembly 110 specifically includes a motor, a transmission case, and the like, the motor is electrically connected to the battery pack 112, an output shaft of the motor is connected to the transmission case, and an output rotation speed of the motor is adjusted by the transmission case and then transmitted to the wheels. Third cooling circuit 115 is coupled to electric drive assembly 110 such that the refrigerant flowing through electric drive assembly 110 absorbs heat generated by electric drive assembly 110. The arrangement mode can also reduce the total number of the radiators required by the vehicle, reduce the structural complexity of the whole electric vehicle and improve the structural compactness of the electric vehicle.

The connection between the third cooling circuit 115 and the electric drive assembly 110 is similar to the connection between the first cooling circuit 114 and the charging assembly 108. For example, electric drive assembly 110 further includes a housing in which the motor and the gearbox are housed, and a second engagement duct partially disposed inside the housing, the second engagement duct including a second input and a second output, both exposed outside the housing, both connected to third cooling duct 115.

Referring to fig. 1, the electric vehicle thermal management system further includes a first control valve 107, a second control valve 111, a third control valve 109, and a fourth control valve 105. A first control valve 107 is mounted on the first cooling line 114, the first control valve 107 being operable to vary the flow of refrigerant through the first cooling line 114 to thereby regulate the cooling effect on the charging assembly 108. A second control valve 111 is installed on the second cooling line 116, and the second control valve 111 serves to vary the flow rate of the refrigerant flowing through the second cooling line 116, thereby adjusting the cooling effect on the battery pack 112. A third control valve 109 is mounted on third cooling line 115, and third control valve 109 is operable to vary the flow of refrigerant through third cooling line 115 to control the cooling effect on electric drive assembly 110. The fourth control valve 105 is installed on the air-conditioning cooling section 113, and the fourth control valve 105 is used for changing the flow rate of the refrigerant flowing through the air-conditioning cooling section 113. Wherein the first control valve 107, the second control valve 111 and the third control valve 109 may be all configured as electronic expansion valves, and the fourth control valve 105 may be configured as an electromagnetic shutoff valve. It should be noted that changing the flow rate as referred to herein includes changing the flow rate to zero in such a manner that the corresponding valve is completely closed.

The operation mode of the thermal management system of the electric vehicle will be briefly described below.

When the driver or passenger in the vehicle has a cooling demand and there is no cooling demand on the battery pack 112, the electric drive assembly 110 and the charging assembly 108 (for example, when the vehicle is just started or keeps running at a low speed), the fourth control valve 105 is opened, and the second control valve 111, the third control valve 109 and the first control valve 107 are kept closed. At this time, the air-conditioning cooling section 113 can circulate the refrigerant, and the refrigerant enters the evaporator 106 through the air-conditioning cooling section 113 to evaporate, thereby cooling the passenger compartment.

When the driver or the passenger in the vehicle does not have the cooling requirement and at least one of the battery pack 112, the electric drive assembly 110 and the charging and distributing assembly 108 has the cooling requirement, the fourth control valve 105 is closed, the air-conditioning cooling section 113 cannot allow the refrigerant to circulate, and at the moment, the passenger compartment cannot be cooled; and the valve on the branch corresponding to the cooling demand is opened. For example, when only the charging block assembly 108 has a cooling demand, the first control valve 107 is open, and the second control valve 111 and the third control valve 109 are closed; when both the electric drive assembly 110 and the battery pack 112 have reduced cooling requirements, the second control valve 111 and the third control valve 109 are opened and the first control valve 107 is closed. By adjusting the opening degrees of the first, second, and third control valves 107, 111, and 109, it is possible to change the flow rate of the refrigerant flowing through the corresponding branch, and thus the flow rate of the refrigerant flowing through the corresponding heat generating component. When the flow rate of the refrigerant flowing through the heat generating component is larger, the refrigerant absorbs more heat from the heat generating component per unit time, and the cooling effect is better, for example, when the temperature of the electric drive assembly 110 is higher, the opening degree of the third control valve 109 can be increased appropriately, so that more refrigerant flows through the electric drive assembly 110 to meet the higher cooling requirement. When the flow rate of the refrigerant flowing through the heat generating component is small, the refrigerant can absorb less heat per unit time from the heat generating component. The opening degrees of the first control valve 107, the second control valve 111 and the third control valve 109 can be adjusted according to the specific temperature of the heat generating component, and an appropriate flow rate can be distributed to each branch, so that the energy consumption of the whole system is reduced while the cooling requirement is met.

When the driver or passenger in the vehicle has a cooling demand and the battery pack 112, the electric drive assembly 110, and the charging assembly 108 all have a cooling demand, the first control valve 107, the second control valve 111, the third control valve 109, and the fourth control valve 105 are all kept open. The opening degrees of the first control valve 107, the second control valve 111, and the third control valve 109 are adjusted according to the temperatures of the corresponding heat generating components.

It should be noted that, the utility model provides an electric motor car thermal management system, its fill power distribution assembly 108, electric drive assembly 110 and battery package 112 three all connect in parallel with evaporimeter 106, for the mode of establishing ties with four of power distribution assembly 108, electric drive assembly 110, battery package 112 and evaporimeter 106, the system set up the degree of difficulty lower, and the controllability is high. In the series configuration, the order in which the refrigerant flows through these components needs to be considered; since the temperature of the refrigerant rises after the refrigerant passes through a certain component, if the temperature difference between the refrigerant that has been heated up and the component to be cooled is small (even if the temperature of the refrigerant is higher than that of the component to be cooled), effective cooling cannot be performed. However, the operating status of any of the charging assembly 108, the electric drive assembly 110, and the battery pack 112 is variable, and it is difficult to effectively satisfy the cooling requirements of the charging assembly 108, the electric drive assembly 110, and the battery pack 112 simultaneously when arranged in series. In the parallel connection mode, the cooling requirements of the charging power assembly 108, the electric drive assembly 110 and the battery pack 112 are independent from each other, and the first control valve 107, the second control valve 111, the third control valve 109 and the fourth control valve 105 can be matched to effectively cool according to the cooling requirements, so that the system has high adjustability.

The utility model also provides an electric motor car, this electric motor car include as above embodiment electric motor car thermal management system, this electric motor car simple structure, compactness, operation economic nature is good.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Electric motor car thermal management system, electric motor car thermal management system has integrateed air conditioning system, air conditioning system includes refrigerant, compressor, condenser, throttle spare, evaporimeter and air conditioner circulating line, the compressor the condenser throttle spare with the evaporimeter all with air conditioner circulating line connects, the refrigerant can air conditioner circulating line mesocycle flows, and flows through in proper order the compressor the condenser throttle spare with the evaporimeter, air conditioner circulating line includes that the air conditioner supplies cold section, the evaporimeter is installed the air conditioner supplies cold section, just the compressor with throttle spare all is located outside the air conditioner supplies cold section, its characterized in that includes:

A battery pack;

the charging and distributing assembly is connected with the battery pack and used for converting the voltage and the current of the input battery pack;

the first cooling pipeline is connected with the air conditioner cooling section in parallel, the first cooling pipeline can supply the refrigerant to circulate, and the first cooling pipeline is connected with the charging and distributing assembly to cool the charging and distributing assembly.

2. The electric vehicle thermal management system of claim 1, further comprising a first control valve mounted on the first cooling line for varying the flow of the refrigerant through the first cooling line.

3. The electric vehicle thermal management system of claim 1, further comprising a second cooling line connected in parallel with the air conditioner cooling section, wherein the refrigerant can enter the second cooling line, and the second cooling line is connected to the battery pack to cool the battery pack.

4. The electric vehicle thermal management system of claim 3, further comprising a second control valve mounted on the second cooling line for varying the flow of the refrigerant through the second cooling line.

5. The electric vehicle thermal management system of claim 4, wherein the battery pack comprises a cooling plate and a plurality of battery units, the plurality of battery units are attached to the cooling plate, the cooling plate is provided with a cooling flow channel, the second cooling pipeline is connected with the cooling plate, and an inner cavity of the second cooling pipeline is communicated with the cooling flow channel.

6. The electric vehicle thermal management system of claim 1, further comprising:

the electric drive assembly is connected with the battery pack, the battery pack can supply power to the electric drive assembly, and the electric drive assembly is used for driving a vehicle to move;

and the third cooling pipeline is connected with the air conditioner cooling section in parallel, and the third cooling pipeline is connected with the electric drive assembly so as to cool the electric drive assembly.

7. The electric vehicle thermal management system of claim 6, further comprising a third control valve mounted on the third cooling line, the third control valve configured to vary the flow of the refrigerant through the third cooling line.

8. The electric vehicle thermal management system of claim 1, further comprising a fourth control valve mounted on the air conditioning cold section for varying the flow of the refrigerant through the air conditioning cold section.

9. The electric vehicle thermal management system of claim 1, wherein the charging assembly comprises a box and a first engagement tube, a portion of the first engagement tube being disposed within the box, the first engagement tube comprising a first input and a first output, the first input and the first output being disposed outside the box, the first input and the first output both being connected to the first cooling tube.

10. Electric vehicle comprising an electric vehicle thermal management system according to any of claims 1 to 9.

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