CN113629311B

CN113629311B - Heat exchanger, vehicle-mounted battery thermal management system, vehicle and charging station

Info

Publication number: CN113629311B
Application number: CN202010378991.2A
Authority: CN
Inventors: 雷晓钧; 代永祥; 吕文春; 张南辉; 蔡京华
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2023-04-07
Anticipated expiration: 2040-05-07
Also published as: CN113629311A

Abstract

The heat exchanger comprises a first part and a second part, wherein the first part is hollow and forms a first heat exchange cavity, a first port and a second port of the heat exchanger are arranged on the first part and are communicated with the first heat exchange cavity, and the first part is provided with a first heat exchange wall; the second part is hollow and forms a second heat exchange cavity, a third port of the heat exchanger and a fourth port of the heat exchanger which are communicated with the second heat exchange cavity are arranged on the second part, and the second part is provided with a second heat exchange wall; wherein the first and second heat exchange walls are configured to be adapted to fit one another, the first and second portions are detachably connectable to one another, and the first and second heat exchange walls fit one another when the first and second portions are connected. The heat exchanger can allow the two heat management systems connected with the heat exchanger to exchange heat, and can also avoid the problem that the heat exchange agent leaks when the two heat management systems connected with the heat exchanger are separated.

Description

Heat exchanger, vehicle-mounted battery thermal management system, vehicle and charging station

Technical Field

The utility model relates to a heat exchanger technical field, specifically, relate to a heat exchanger, on-vehicle battery thermal management system, vehicle and charging station.

Background

A heat exchanger is a heat exchanger that transfers some of the heat from a hot fluid in one thermal management system to a cold fluid in another thermal management system to enable heat exchange between the fluids in the two separate thermal management systems. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, and has wide application.

In the prior art, if one thermal management system needs to exchange heat with another thermal management system through a heat exchanger, the heat exchanger needs to be located in two independent thermal management systems at the same time, that is, the heat exchanger can connect the two thermal management systems into a whole, and when the two thermal management systems need to be separated, the pipeline connecting the heat exchanger in the two thermal management systems needs to be detached, the connection between the pipeline and the heat exchanger is disconnected, and the pipelines in the two thermal management systems need to be reconnected, so that the two thermal management systems become closed flow paths again, which is inconvenient for separating the two thermal management systems, and when the pipelines in the two thermal management systems are detached from the heat exchanger, the heat exchanger in the thermal management systems can also be leaked. In addition, even if only the pipeline connected with the heat exchanger in one thermal management system is detached from the heat exchanger, so that the heat exchanger is kept in another thermal management system, the problems that the pipeline needs to be detached and the heat exchange agent leaks still exist. Therefore, how to use the heat exchanger to facilitate heat exchange between two thermal management systems without affecting the separation of the two thermal management systems is a problem that needs to be solved urgently in the prior art.

Disclosure of Invention

The purpose of the present disclosure is to provide a heat exchanger, a vehicle-mounted battery thermal management system, a vehicle and a charging station, wherein the heat exchanger can allow two thermal management systems connected with the heat exchanger to exchange heat, and can avoid the problem of heat exchange agent leakage when the two thermal management systems connected with the heat exchanger are separated.

In order to achieve the above object, according to one aspect of the present disclosure, there is provided a heat exchanger including:

the heat exchanger comprises a first part, a second part and a heat exchanger, wherein the first part is hollow and forms a first heat exchange cavity, a first port and a second port of the heat exchanger which are communicated with the first heat exchange cavity are arranged on the first part, and the first part is provided with a first heat exchange wall;

the second part is hollow and forms a second heat exchange cavity, a third port and a fourth port of the heat exchanger which are communicated with the second heat exchange cavity are arranged on the second part, and the second part is provided with a second heat exchange wall;

wherein the first and second heat exchange walls are configured to be adapted to fit against each other, the first and second portions are detachably connectable to each other, and the first and second heat exchange walls fit against each other when the first and second portions are connected.

Optionally, the first heat exchange wall and the second heat exchange wall are both formed in a wave shape to enable the first heat exchange wall and the second heat exchange wall to engage with each other.

Optionally, a plurality of first heat dissipation fins are arranged in the first heat exchange cavity, the plurality of first heat dissipation fins are arranged at intervals along the flowing direction of the heat exchange agent in the first heat exchange cavity, one end of each first heat dissipation fin is connected with the first heat exchange wall, and the other end of each first heat dissipation fin extends towards a direction away from the first heat exchange wall; and/or the presence of a gas in the gas,

the second heat exchange cavity is internally provided with a plurality of second radiating fins which are arranged at intervals along the direction of the flowing direction of the heat exchange agent in the second heat exchange cavity, one end of each second radiating fin is connected with the second heat exchange wall, and the other end of each second radiating fin extends towards the direction deviating from the second heat exchange wall.

Optionally, the first heat dissipation fin is provided with a first through hole through which a heat exchange agent in the first heat exchange cavity flows; and/or the presence of a gas in the gas,

and the second heat radiating fins are provided with second through holes for the heat exchange agent in the second heat exchange cavities to flow through.

Optionally, the number of the first through holes is multiple, the multiple first through holes are arranged on the first cooling fins in an array, and the size of each first through hole increases sequentially from the direction close to the first heat exchange wall to the direction far away from the first heat exchange wall; and/or the presence of a gas in the gas,

the second through holes are arranged on the second radiating fins in an array mode, and the size of each second through hole is increased in sequence from the position close to the second heat exchange wall to the position far away from the second heat exchange wall.

Optionally, the heat exchanger includes a first flow baffle and a second flow baffle disposed in the first heat exchange cavity, the first portion has a first side wall opposite to the first heat exchange wall, a cavity between the first heat exchange wall and the first side wall is the first heat exchange cavity, one end of the first flow baffle is connected to the first heat exchange wall, the other end of the first flow baffle extends toward the first side wall and has a gap with the first side wall, one end of the second flow baffle is connected to the first side wall, the other end of the second flow baffle extends toward the first heat exchange wall and has a gap with the first heat exchange wall, and the first flow baffle and the second flow baffle are arranged in a staggered manner with each other along a flow direction of a heat exchange agent in the first heat exchange cavity; and/or the presence of a gas in the gas,

the heat exchanger further comprises a third flow baffle and a fourth flow baffle which are arranged in the second heat exchange cavity, the second part is provided with a second side wall opposite to the second heat exchange wall, a cavity between the second heat exchange wall and the second side wall is the second heat exchange cavity, one end of the third flow baffle is connected with the second heat exchange wall, the other end of the third flow baffle extends towards the second side wall and forms a gap with the second side wall, one end of the fourth flow baffle is connected with the second side wall, the other end of the fourth flow baffle extends towards the second heat exchange wall and forms a gap with the second heat exchange wall, and the third flow baffle and the fourth flow baffle are arranged in a staggered mode along the flowing direction of a heat exchange agent in the second heat exchange cavity.

Optionally, the heat exchanger further comprises an electromagnet;

the electromagnets are arranged on the first heat exchange wall and the second heat exchange wall, and the electromagnets on the first heat exchange wall and the electromagnets on the second heat exchange wall can generate magnetic attraction force and attract each other when being electrified; alternatively, the first and second electrodes may be,

one of the first heat exchange wall and the second heat exchange wall is provided with the electromagnet, the other one is set as a magnetic heat exchange wall, and the electromagnet can generate magnetic attraction for attracting the magnetic heat exchange wall when being electrified.

Optionally, the heat exchanger further comprises a control module;

the control module is used for controlling first current to pass through the electromagnet is used for generating first magnetic attraction force, and when the first heat exchange wall is attached to the second heat exchange wall, second current is controlled to pass through the electromagnet is used for generating second magnetic attraction force, the first current is smaller than the second current, and the first magnetic attraction force is smaller than the second magnetic attraction force.

Optionally, the control module is further configured to, under a condition that the first heat exchange wall and the second heat exchange wall are in a fit state under the action of the second magnetic attraction force, disconnect the current of the electromagnet in any one of the following manners:

disconnecting the current of the electromagnet according to a first disconnection command;

and controlling the current passing through the electromagnet to be switched from the second current to the first current according to a first pre-disconnection instruction, and disconnecting the current of the electromagnet after the first heat exchange wall is separated from the second heat exchange wall.

Optionally, all be provided with on the first heat transfer wall with on the second heat transfer wall the electro-magnet, control module still is used for first heat transfer wall with the second heat transfer wall receives under the circumstances that second magnetic attraction is in the laminating state, break through following mode the electric current of electro-magnet:

according to a second pre-disconnection instruction, controlling the current passing through the electromagnet on one of the first heat exchange wall and the second heat exchange wall to be switched from the second current to the first current, controlling the current passing through the electromagnet on the other of the first heat exchange wall and the second heat exchange wall to be switched from the second current to the first current according to a second disconnection instruction, and disconnecting the current of the electromagnet on the first heat exchange wall and the current of the electromagnet on the second heat exchange wall after the first heat exchange wall is separated from the second heat exchange wall.

According to another aspect of the present disclosure, a charging station is provided, which includes a charging station thermal management system, where the charging station thermal management system includes a heat exchanger set, a first flow path, a second flow path, and the second portion of the heat exchanger, a first end of the first flow path communicates with the third port of the heat exchanger of the second portion, a second end of the first flow path communicates with the first port of the heat exchanger set, a first end of the second flow path communicates with the fourth port of the heat exchanger of the second portion, and a second end of the second flow path communicates with the second port of the heat exchanger set.

Optionally, the charging station includes a support structure for supporting the second portion, the control module is disposed on the second portion, and the control module controls a first current to pass through the electromagnet to generate a first magnetic attraction force specifically includes:

when the second portion is disengaged from the support structure, a first current is controlled through the electromagnet to produce a first magnetic attraction force.

According to yet another aspect of the present disclosure, an on-board battery thermal management system is provided, including a battery heat exchange flow path and the first portion of the heat exchanger described above, a first end of the battery heat exchange flow path being in communication with the first port of the heat exchanger of the first portion, a second end of the battery heat exchange flow path being in communication with the second port of the heat exchanger of the first portion, the battery heat exchange flow path being configured to enable a battery pack of a vehicle to be disposed on the battery heat exchange flow path.

Optionally, the control module is disposed on the first portion, and the controlling the first current through the electromagnet to generate the first magnetic attraction includes:

when a cover plate of the vehicle is opened and the first part is exposed, a first current is controlled to pass through the electromagnet to generate a first magnetic attraction force.

Optionally, the control module is disposed on the first portion, the control module being configured to:

when information representing that the battery pack is charged is acquired, a first pre-disconnection instruction is generated, the current passing through the electromagnet on the first heat exchange wall is controlled to be switched from the second current to the first current according to the first pre-disconnection instruction, and the current of the electromagnet on the first heat exchange wall is disconnected after a cover plate of a vehicle covers the first part.

According to still another aspect of the present disclosure, a vehicle is provided, which includes a battery pack and the vehicle-mounted battery thermal management system, wherein the battery pack is disposed on the battery heat exchange path of the vehicle-mounted battery thermal management system.

Through the technical scheme, when the first part is positioned in one heat management system and the second part is positioned in the other heat management system, if heat exchange is needed between the two heat management systems, the first part is connected with the second part, the first heat exchange wall and the second heat exchange wall are mutually attached, and heat can be exchanged between the heat exchange agent in the first heat exchange cavity and the heat exchange agent in the second heat exchange cavity, so that heat exchange between the two heat management systems is realized; if heat exchange is not needed between the two thermal management systems, the first part and the second part are directly separated, and the first heat exchange wall and the second heat exchange wall are separated and do not contact with each other, so that the two thermal management systems can independently operate without influencing each other.

Because the heat exchanger provided by the disclosure has the detachable first part and the detachable second part, the first part and the second part can be positioned in two different thermal management systems and form a closed flow path with the corresponding thermal management systems, when the first part is connected with the second part, the two thermal management systems can exchange heat through the heat exchanger, when the first part is separated from the second part, the two thermal management systems can be separated and independently operated without disassembling a pipeline connected with the heat exchanger, and the problem of heat exchange agent leakage caused by separation of the two thermal management systems is avoided.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a heat exchanger according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a heat exchanger provided in accordance with an embodiment of the present disclosure;

FIG. 3 is a first embodiment of a heat exchanger according to the present disclosure a schematic plan view of a heat dissipating fin or a second heat dissipating fin;

FIG. 4 is a flow diagram of a battery thermal management system including an on-board battery thermal management system and a charging station thermal management system provided by one embodiment of the present disclosure;

FIG. 5 is a flow diagram of a battery thermal management system including an on-board battery thermal management system and a charging station thermal management system provided by one embodiment of the present disclosure, where the charging station thermal management system provides cooling to the on-board battery thermal management system, and thick solid lines and arrows indicate the flow path and direction of the cooling fluid;

FIG. 6 is a flow diagram of a battery thermal management system including an on-board battery thermal management system and a charging station thermal management system provided by one embodiment of the present disclosure, wherein the charging station thermal management system provides heat to the on-board battery thermal management system, and bold solid lines and arrows indicate coolant flow paths and directions;

FIG. 7 is a flow diagram of a battery thermal management system including an on-board battery thermal management system and a charging station thermal management system provided by another embodiment of the present disclosure;

FIG. 8 is a flow diagram of a battery thermal management system including an on-board battery thermal management system and a charging station thermal management system provided by another embodiment of the present disclosure, where the charging station thermal management system provides cooling to the on-board battery thermal management system, and thick solid lines and arrows indicate the flow path and direction of the cooling fluid;

FIG. 9 is a flow diagram of a battery thermal management system including an on-board battery thermal management system and a charging station thermal management system provided by another embodiment of the present disclosure, wherein the charging station thermal management system provides heat to the on-board battery thermal management system, and bold solid lines and arrows indicate coolant flow paths and directions;

fig. 10 is a flow diagram of an on-board battery thermal management system provided by an embodiment of the present disclosure, wherein an on-board battery heat pipe is not connected to the charging station thermal management system, and thick solid lines and arrows indicate a flow path and a flow direction of a coolant.

Description of the reference numerals

100-an onboard battery thermal management system; 101-cell heat exchange flow path; 103-a second plate heat exchanger; 104 a second water pump; 105-a second fluid replenishing tank; 200-a charging station thermal management system; 201-first flowline; 202-a second flow path; 203-a first plate heat exchanger; 204-a compressor; 205-a condenser; 206-an expansion valve; 207-a first water pump; 208-a first fluid replenishing tank; 209-a first temperature sensor; 210-a second temperature sensor; 211-a flow sensor; 212-a four-way valve; 300-a heat exchanger; 310-a first portion; 311-a first heat exchange chamber; 312-a heat exchanger first port; 313 — heat exchanger second port; 314-a first heat exchange wall; 315-first cooling fin; 3151-a first via; 316-first baffle; 317-a second flow baffle; 318-a first side wall; 320-a second portion; 321-a second heat exchange chamber; 322-heat exchanger third port; 323-heat exchanger fourth port; 324-a second heat exchange wall; 325-second cooling fin; 3251-a second via; 326-a third baffle; 327-a fourth baffle; 328-a second sidewall; 330-an electromagnet; 400-battery pack.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "inner" and "outer" is intended to refer to the interior and exterior of the corresponding structure or component profile unless indicated to the contrary.

Heat exchanger 300

As shown in fig. 1 to 3, according to one aspect of the present disclosure, there is provided a heat exchanger 300, the heat exchanger 300 including a first portion 310 and a second portion 320, the first portion 310 being hollow inside and forming a first heat exchange cavity 311, the first portion 310 being provided with a heat exchanger first port 312 and a heat exchanger second port 313 communicating with the first heat exchange cavity 311, the first portion 310 having a first heat exchange wall 314; the second part 320 is hollow inside and forms a second heat exchange cavity 321, a third port 322 and a fourth port 323 of the heat exchanger which are communicated with the second heat exchange cavity 321 are arranged on the second part 320, the second part 320 is provided with a second heat exchange wall 324, the first port 312 and the second port 313 of the heat exchanger on the first part 310 are used for being connected with one heat management system, and the third port 322 and the fourth port 323 of the heat exchanger on the second part 320 are used for being connected with another heat management system, so that the first part 310 can be located in one heat management system, and the second part 320 can be located in another heat management system. Wherein the first and second

heat exchange walls

314, 324 are configured to be adapted to fit against each other, the first and

second portions

310, 320 are detachably connectable to each other, and the first and second

heat exchange walls

314, 324 fit against each other when the first and

second portions

310, 320 are connected.

Through the technical scheme, when the first part 310 is located in one thermal management system and the second part 320 is located in the other thermal management system, if heat exchange is needed between the two thermal management systems, the first part 310 is connected with the second part 320, the first heat exchange wall 314 and the second heat exchange wall 324 are attached to each other, and heat exchange agents in the first heat exchange cavity 311 and the second heat exchange cavity 321 can exchange heat, so that heat exchange between the two thermal management systems is realized; if no heat exchange is required between the two thermal management systems, the first portion 310 is directly separated from the second portion 320, and the first heat exchange wall 314 is separated from the second heat exchange wall 324 and does not contact, so that the two thermal management systems can independently operate without affecting each other.

Since the heat exchanger 300 provided by the present disclosure has the detachable first portion 310 and the detachable second portion 320, the first portion 310 and the second portion 320 can be located in two different thermal management systems and form a closed flow path with their corresponding thermal management systems, when the first portion 310 is connected to the second portion 320, the two thermal management systems can exchange heat through the heat exchanger 300, when the first portion 310 is separated from the second portion 320, the two thermal management systems can be separated and operated independently without disassembling a pipeline connected to the heat exchanger 300, and there is no problem of heat exchange agent leakage caused by the separation of the two thermal management systems.

In an application scenario of the heat exchanger 300 provided in the present disclosure, the heat exchanger 300 can be used for heat exchange between the charging station thermal management system 200 of the charging station and the on-board battery thermal management system 100. Specifically, when a vehicle is charged in a charging station, the temperature of the battery pack 400 continuously rises, and if the temperature of the battery pack 400 is too high, the service life of the battery pack 400 is affected, therefore, the charging station can be provided with a charging station thermal management system 200 for providing cooling energy to the battery pack 400, one of the first part 310 and the second part 320 of the heat exchanger 300 provided by the disclosure can be arranged in the vehicle-mounted battery thermal management system 100 of the vehicle, and the other can be arranged in the charging station thermal management system 200, when the vehicle is charged in the charging station, the first part 310 and the second part 320 are connected with each other, so that the charging station thermal management system 200 can provide cooling energy to the vehicle-mounted battery thermal management system 100 to cool the battery pack 400 being charged, and when the vehicle is charged or needs to move out of the charging station, the first part 310 and the second part 320 can be separated from each other, the thermal management system 200 is disconnected from the vehicle-mounted battery thermal management system 100, and the vehicle-mounted battery thermal management system 100 can independently operate on the vehicle.

The connection or separation of the vehicle-mounted battery thermal management system 100 and the charging station thermal management system 200 can be realized by operating the connection or separation of the first part 310, the connection and separation process of the vehicle-mounted battery thermal management system 100 and the charging station thermal management system 200 is simple and easy to operate, and when the vehicle-mounted battery thermal management system 100 is separated from the charging station thermal management system 200, heat exchange agents in the two thermal management systems cannot leak.

To improve the heat exchange efficiency of the heat exchanger 300, as shown in fig. 1 and 2, the first heat exchange wall 314 and the second heat exchange wall 324 may be formed in a wave shape so that the first heat exchange wall 314 and the second heat exchange wall 324 can be engaged with each other. The corrugated first and second

heat exchange walls

314 and 324 not only can increase the contact area of the first and second

heat exchange walls

314 and 324, but also can allow the first and second

heat exchange walls

314 and 324 to be engaged with each other, thereby enabling the first and second

heat exchange walls

314 and 324 to be closely attached to each other.

Here, the first heat exchange wall 314 and the second heat exchange wall 324 are both formed in a wave shape, that is, a plurality of convex portions are formed on the first heat exchange wall 314 and the second heat exchange wall 324 at intervals, a concave portion is defined between two adjacent convex portions, when the first portion 310 and the second portion 320 are connected, the convex portion of the first heat exchange wall 314 is engaged with the concave portion of the second heat exchange wall 324, and the concave portion of the first heat exchange wall 314 is engaged with the convex portion of the second heat exchange wall 324. The convex and concave portions may have any suitable shape, for example, the convex and concave portions may have a circular arc shape to form the first heat exchange wall 314 and the second heat exchange wall 324 into a wavy shape, or the convex and concave portions may have a triangular shape to form the first heat exchange wall 314 and the second heat exchange wall 324 into a zigzag shape, or the convex and concave portions may have a square, rectangular, trapezoidal shape, or the like.

Optionally, the first heat exchange wall 314 and the second heat exchange wall 324 may be covered with a heat conductive material, for example, a heat conductive gasket, a heat conductive silica gel, or the like, so as to further increase the heat conduction effect between the first heat exchange wall 314 and the second heat exchange wall 324, and improve the heat exchange efficiency.

As shown in fig. 2, a plurality of first heat dissipation fins 315 may also be disposed in the first heat exchange cavity 311, the plurality of first heat dissipation fins 315 are disposed at intervals along the flowing direction of the heat exchange agent in the first heat exchange cavity 311, one end of each first heat dissipation fin 315 is connected to the first heat exchange wall 314, and the other end extends in a direction away from the first heat exchange wall 314; and/or a plurality of second heat dissipation fins 325 are arranged in the second heat exchange cavity 321, the plurality of second heat dissipation fins 325 are arranged at intervals along the flowing direction of the heat exchange agent in the second heat exchange cavity 321, one end of each second heat dissipation fin 325 is connected with the second heat exchange wall 324, and the other end extends towards the direction departing from the second heat exchange wall 324.

Because the first heat dissipation fins 315 are arranged at intervals along the flowing direction of the heat exchange agent in the first heat exchange cavity 311, and the second heat dissipation fins 325 are arranged at intervals along the flowing direction of the heat exchange agent in the second heat exchange cavity 321, when the heat exchange agent in the first heat exchange cavity 311 flows, the heat can sequentially pass through the plurality of first heat dissipation fins 315 and is transferred to the first heat dissipation fins 315, the first heat dissipation fins 315 further transfer the heat to the first heat exchange wall 314, when the heat exchange agent in the second heat exchange cavity 321 flows, the heat can sequentially pass through the plurality of second heat dissipation fins 325 and is transferred to the second heat dissipation fins 325, and the second heat dissipation fins 325 further transfer the heat to the second heat exchange wall 324, so that the heat conduction area between the heat exchange agent in the first heat exchange cavity 311 and the first heat exchange wall 314, and between the heat exchange agent in the second heat exchange cavity 321 and the second heat exchange wall 324 can be increased, and the heat exchange efficiency between the first portion 310 and the second portion 320 can be improved.

Optionally, as shown in fig. 3, the first heat dissipation fin 315 is provided with a first through hole 3151 through which the heat exchange agent in the first heat exchange cavity 311 flows; and/or the second heat dissipation fin 325 is provided with a second through hole 3251 through which the heat exchange agent in the second heat exchange cavity 321 flows. The first through holes 3151 and/or the second through holes 3251 can not only allow the heat exchange agent in the first heat exchange cavity 311 and the heat exchange agent in the second heat exchange cavity 321 to flow through, respectively, but also slow down the flow speed of the heat exchange agent when the heat exchange agent flows through the first through holes 3151 and/or the second through holes 3251, so that the heat exchange agent can sufficiently contact with the first heat dissipation fins 315 and/or the second heat dissipation fins 325, respectively, and the heat exchange agent can efficiently exchange heat with the first heat dissipation fins 315 and/or the second heat dissipation fins 325.

Optionally, as shown in fig. 3, the number of the first through holes 3151 is multiple, the multiple first through holes 3151 are arranged on the first heat dissipation fins 315 in an array, and the size of each first through hole 3151 increases in turn from the direction close to the first heat exchange wall 314 to the direction far away from the first heat exchange wall 314; and/or a plurality of second through holes 3251 are provided, the plurality of second through holes 3251 are arranged on the second heat dissipation fin 325 in an array, and the size of each second through hole 3251 increases in sequence from the direction close to the second heat exchange wall 324 to the direction away from the second heat exchange wall 324. Taking as an example that three rows of first through holes 3151 are arranged in a direction from close to the first heat exchange wall 314 to far from the first heat exchange wall 314, the aperture of the first row of first through holes 3151 closest to the first heat exchange wall 314 is smaller than the aperture of the third row of first through holes 3151 farthest from the first heat exchange wall 314, and the aperture of the second row of first through holes 3151 between the first row of first through holes 3151 and the third row of first through holes 3151 is larger than the aperture of the first row of first through holes 3151 and smaller than the aperture of the third row of first through holes 3151; taking as an example that three rows of second through holes 3251 are arranged in a direction from close to second heat exchange wall 324 to far from second heat exchange wall 324, the aperture of the first row of second through holes 3251 closest to second heat exchange wall 324 is smaller than the aperture of the third row of second through holes 3251 farthest from second heat exchange wall 324, and the aperture of the second row of second through holes 3251 between the first row of second through holes 3251 and the third row of second through holes 3251 is larger than the aperture of the first row of second through holes 3251 and smaller than the aperture of the third row of second through holes 3251.

Since the size of each first through hole 3151 is sequentially increased from the direction close to the first heat exchange wall 314 to the direction away from the first heat exchange wall 314, the flow rate and the flow velocity of the heat exchange agent flowing through the first through hole 3151 are sequentially increased from the direction close to the first heat exchange wall 314 to the direction away from the first heat exchange wall 314, so that the heat exchange agent close to the first heat exchange wall 314 can be sufficiently contacted with the first heat exchange wall 314, and the first heat dissipation fins 315 do not affect the flow velocity of the heat exchange agent away from the first heat exchange wall 314; since the size of each second through hole 3251 is sequentially increased from the direction close to the second heat exchange wall 324 to the direction away from the second heat exchange wall 324, the flow rate and the flow velocity of the heat exchange agent flowing through the second through hole 3251 are sequentially increased from the direction close to the second heat exchange wall 324 to the direction away from the second heat exchange wall 324, so that the heat exchange agent close to the second heat exchange wall 324 can be sufficiently contacted with the second heat exchange wall 324, and the flow velocity of the heat exchange agent away from the second heat exchange wall 324 is not affected by the second heat dissipation fins 325.

Here, the first and second through

holes

3151 and 3251 may have any suitable structure and shape, for example, the first and second through

holes

3151 and 3251 may be circular holes, long holes, kidney-shaped holes, or the first and second through

holes

3151 and 3251 may have a triangular shape, a square shape, a trapezoidal shape, etc., and the shape of the first and second through

holes

3151 and 3251 is not limited by the present disclosure.

As shown in fig. 2, the heat exchanger 300 may further include a first baffle 316 and a second baffle 317 disposed in the first heat exchange cavity 311, the first portion 310 has a first side wall 318 opposite to the first heat exchange wall 314, a cavity between the first heat exchange wall 314 and the first side wall 318 is the first heat exchange cavity 311, one end of the first baffle 316 is connected to the first heat exchange wall 314, the other end extends toward the first side wall 318 with a gap therebetween, one end of the second baffle 317 is connected to the first side wall 318, the other end extends toward the first heat exchange wall 314 with a gap therebetween, and the first baffle 316 and the second baffle 317 are arranged to be staggered with each other along a flow direction of the heat transfer agent in the first heat exchange cavity 311; and/or, the heat exchanger 300 further includes a third baffle 326 and a fourth baffle 327 disposed in the second heat exchange cavity 321, the second portion 320 has a second side wall 328 opposite to the second heat exchange wall 324, a cavity between the second heat exchange wall 324 and the second side wall 328 is the second heat exchange cavity 321, one end of the third baffle 326 is connected to the second heat exchange wall 324, the other end extends toward the second side wall 328 with a gap therebetween, one end of the fourth baffle 327 is connected to the second side wall 328, the other end extends toward the second heat exchange wall 324 with a gap therebetween, and the third baffle 326 and the fourth baffle 327 are arranged in a staggered manner along a flowing direction of the heat exchange agent in the second heat exchange cavity 321.

Because one end of the first baffle plate 316 is connected to the first heat exchange wall 314, the other end of the first baffle plate extends towards the first side wall 318 and has a gap with the first side wall 318, one end of the second baffle plate 317 is connected to the first side wall 318, the other end of the second baffle plate extends towards the first heat exchange wall 314 and has a gap with the first heat exchange wall 314, and the first baffle plate 316 and the second baffle plate 317 are arranged in a staggered manner along the flowing direction of the heat exchange agent in the first heat exchange cavity 311, when the heat exchange agent flows in the first heat exchange cavity 311, the heat exchange agent can flow in the first heat exchange cavity 311 along a wavy flowing path, so that the flowing time of the heat exchange agent in the first heat exchange cavity 311 is increased, and thus the heat exchange agent in the first heat exchange cavity 311 can exchange heat with the heat exchange agent in the second heat exchange cavity 321 sufficiently, and the heat exchange effect is improved. Because one end of the third baffle 326 is connected to the second heat exchange wall 324, the other end of the third baffle 326 extends towards the second side wall 328 and has a gap with the second side wall 328, one end of the fourth baffle 327 is connected to the second side wall 328, the other end of the fourth baffle 327 extends towards the second heat exchange wall 324 and has a gap with the second heat exchange wall 324, and the third baffle 326 and the fourth baffle 327 are arranged in a staggered manner along the flowing direction of the heat exchange agent in the second heat exchange cavity 321, when the heat exchange agent flows in the second heat exchange cavity 321, the heat exchange agent can flow in the second heat exchange cavity 321 along a wavy flowing path, so that the flowing time of the heat exchange agent in the second heat exchange cavity 321 is increased, and thus the heat exchange agent in the second heat exchange cavity 321 can exchange heat with the heat exchange agent in the first heat exchange cavity 311 sufficiently, and the heat exchange effect is improved.

Also, for the embodiment in which the first and second

heat exchange walls

314 and 324 are formed in a wave shape, when the heat exchange agent flows along a wave-shaped flow path in the first and second

heat exchange cavities

311 and 321, the heat exchange agent can be better contacted with the first and second

heat exchange walls

314 and 324, so that the heat exchange effect is improved by the heat exchange between the first and second

heat exchange walls

314 and 324.

In addition, the first portion 310 and the second portion 320 of the heat exchanger 300 may be detachably connected through various embodiments, for example, one of the first portion 310 and the second portion 320 may be formed with a snap groove, and the other may be formed with a snap so that the first portion 310 and the second portion 320 can be snapped into each other, or the first portion 310 and the second portion 320 may be connected together through an electromagnetic lock, an electric lock, a mechanical lock, or other releasable locking devices, and when the first portion 310 is connected with the second portion 320, the locking devices lock the first portion 310 and the second portion 320 in a state that the first heat exchange wall 314 and the second heat exchange wall 324 thereof are attached to each other, and when the locking devices are released, the first portion 310 and the second portion 320 can be detached from each other.

In an exemplary embodiment provided by the present disclosure, the first portion 310 and the second portion 320 are detachably connected by an electromagnet 330. Specifically, as shown in fig. 1, the heat exchanger 300 may further include an electromagnet 330, the electromagnets 330 are disposed on the first heat exchange wall 314 and the second heat exchange wall 324, the electromagnet 330 on the first heat exchange wall 314 and the electromagnet 330 on the second heat exchange wall 324 can generate a magnetic attraction force when the electromagnets 330 are energized, and attract each other, that is, when the electromagnet 330 is energized, the electromagnet 330 on the first heat exchange wall 314 generates a magnetic attraction force that attracts the electromagnet 330 on the second heat exchange wall 324, and the electromagnet 330 on the second heat exchange wall 324 generates a magnetic attraction force that attracts the electromagnet 330 on the first heat exchange wall 314, so that the first heat exchange wall 314 and the second heat exchange wall 324 are attached to each other, and the first portion 310 and the second portion 320 are connected together.

Alternatively, one of the first heat exchange wall 314 and the second heat exchange wall 324 is provided with an electromagnet 330, and the other is provided with a magnetic heat exchange wall (i.e. a heat exchange wall made of a magnetic adsorption material, for example, a heat exchange wall made of a permanent magnet), and the electromagnet 330 can generate a magnetic attraction force for attracting the magnetic heat exchange wall when being powered on, so that the first heat exchange wall 314 and the second heat exchange wall 324 can be attached to each other.

When the first and

second portions

310 and 320 need to be separated from each other, the electromagnet 330 may be de-energized so that the magnetic attraction force generated by the electromagnet 330 is lost to allow the first and second

heat exchange walls

314 and 324 to be separated, or a small current may be applied to the electromagnet 330 to reduce the magnetic attraction force of the electromagnet 330 so that an operator may manually separate the first and

second portions

310 and 320.

Because the first part 310 and the second part 320 are connected through the magnetic attraction force generated when the electromagnet 330 is electrified, the first part 310 and the second part 320 can be prevented from being deformed and worn due to long-term use to influence the connection of the first part 310 and the second part 320, and the first heat exchange wall 314 and the second heat exchange wall 324 are prevented from being attached to each other due to deformation or wear to influence the heat exchange efficiency.

Further, the heat exchanger 300 may also include a control module;

the control module is configured to control a first current to pass through the electromagnet 330 to generate a first magnetic attraction force, and control a second current to pass through the electromagnet 330 to generate a second magnetic attraction force when the first heat exchange wall 314 is attached to the second heat exchange wall 324, where the first current is smaller than the second current, and the first magnetic attraction force is smaller than the second magnetic attraction force.

That is, in both the embodiment in which the electromagnets 330 are disposed on the first heat exchange wall 314 and the second heat exchange wall 324 and the embodiment in which the electromagnets 330 are disposed on one of the first heat exchange wall 314 and the second heat exchange wall 324, before the first portion 310 is connected to the second portion 320, that is, before the first heat exchange wall 314 is attached to the second heat exchange wall 324, the first current with a smaller current is controlled to pass through the electromagnets 330, so that the electromagnets 330 can generate a first magnetic attraction force for connecting the first portion 310 and the second portion 320, when the first portion 310 is connected to the second portion 320 and the first heat exchange wall 314 is attached to the second heat exchange wall 324, the second current with a larger current is controlled to pass through the electromagnets 330, and at this time, the electromagnets 330 generate a second magnetic attraction force larger than the first magnetic attraction force, so that the first heat exchange wall 314 and the second heat exchange wall 324 are tightly and stably attached to each other, and the first heat exchange wall 314 and the second heat exchange wall 324 are not easily separated from each other. The first current is controlled to pass through the electromagnet 330, and when the first heat exchange wall 314 and the second heat exchange wall 324 are attached to each other, the second current is controlled to pass through the electromagnet 330, so that a large impact force generated when the first heat exchange wall 314 and the second heat exchange wall 324 are attached to each other can be avoided, and the attaching process of the first heat exchange wall 314 and the second heat exchange wall 324 is more stable and safer.

Optionally, the control module is further configured to, when the first heat exchange wall 314 and the second heat exchange wall 324 are in the attached state under the action of the second magnetic attraction force, disconnect the current of the electromagnet 330 by any one of the following manners:

turning off the current of the electromagnet 330 according to the first turn-off command;

the current passing through the electromagnet 330 is controlled to be switched from the second current to the first current according to the first pre-turn-off command, and the current of the electromagnet 330 is turned off after the first heat exchange wall 314 is separated from the second heat exchange wall 324.

Here, the first disconnection command in the former manner and the first pre-disconnection command in the latter manner may be commands generated by the control module when it is determined that heat exchange between one thermal management system connected to the first portion 310 of the heat exchanger 300 and another thermal management system connected to the second portion 320 of the heat exchanger 300 is completed, or commands generated when it is detected that an operator presses an operation button for separating the first portion 310 and the second portion 320. For the implementation scenario where heat exchanger 300 is used to exchange heat between on-board battery thermal management system 100 and charging station thermal management system 200 mentioned above, both the first disconnection command and the first pre-disconnection command may be commands generated by the control module when it is determined that the battery charging is complete or the battery cooling is complete.

When the first part 310 and the second part 320 are separated, if the current of the electromagnet 330 is turned off according to the first turn-off command, the magnetic attraction of the electromagnet 330 disappears, the first heat exchange wall 314 and the second heat exchange wall 324 can be directly separated, if the current of the electromagnet 330 is controlled according to the first pre-turn-off command and switched from the second current to the first current, and after the first heat exchange wall 314 is separated from the second heat exchange wall 324, the current of the electromagnet 330 is turned off, the magnetic attraction of the electromagnet 330 is reduced from the second magnetic attraction to the first magnetic attraction, the first magnetic attraction can provide a smaller acting force required for contacting, attaching and installing the first heat exchange wall 314 and the second heat exchange wall 324, but when an operator applies an acting force opposite to the first magnetic attraction, the first part 310 and the second part 320 can be separated, and the first heat exchange wall 314 is separated from the second heat exchange wall 324. The control module may then de-energize the electromagnet 330 after the first heat exchange wall 314 and the second heat exchange wall 324 are disengaged.

Optionally, for the embodiment that the electromagnets 330 are disposed on both the first heat exchange wall 314 and the second heat exchange wall 324, the control module is further configured to, in a case that the first heat exchange wall 314 and the second heat exchange wall 324 are in a fit state under the action of the second magnetic force, disconnect the current of the electromagnets 330 by:

according to a second pre-disconnection instruction, the current passing through the electromagnet 330 on one of the first heat exchange wall 314 and the second heat exchange wall 324 is controlled to be switched from the second current to the first current, the current passing through the electromagnet 330 on the other one of the first heat exchange wall 314 and the second heat exchange wall 324 is controlled to be switched from the second current to the first current according to a second disconnection instruction, and the current of the electromagnet 330 on the first heat exchange wall 314 and the electromagnet 330 on the second heat exchange wall 324 is disconnected after the first heat exchange wall 314 is disconnected from the second heat exchange wall 324.

Here, the second pre-disconnection command may be a command generated by the control module upon determining that heat exchange between one thermal management system connected to the first portion 310 of the heat exchanger 300 and another thermal management system connected to the second portion 320 of the heat exchanger 300 is completed, and the second disconnection command may be a command generated upon detecting that an operator pushes an operation button for separating the first portion 310 and the second portion 320.

After the control module controls the current passed by the electromagnet 330 on one of the first heat exchange wall 314 and the second heat exchange wall 324 to be switched from the second current to the first current according to the second pre-disconnection instruction, the electromagnet 330 on one of the first heat exchange wall 314 and the second heat exchange wall 324 generates a first magnetic attraction force, and the electromagnet 330 on the other one generates a second magnetic attraction force, so that the mutual attraction force between the first heat exchange wall 314 and the second heat exchange wall 324 is reduced, but the first part 310 and the second part 320 can be ensured to be still in a connected state. After the second pre-disconnection instruction is generated, the heat exchange between the heat management system connected to the first portion 310 of the heat exchanger 300 and the heat exchange system connected to the second portion 320 of the heat exchanger 300 is completed, and the first heat exchange wall 314 and the second heat exchange wall 324 do not need to be tightly attached to each other through the second magnetic attraction force to improve the heat exchange efficiency, so that the mutual attraction force between the first heat exchange wall 314 and the second heat exchange wall 324 is reduced, which is beneficial to reducing the loss of electric energy.

After the control module controls the current passing through the electromagnet 330 on the other one of the first heat exchange wall 314 and the second heat exchange wall 324 to be switched from the second current to the first current according to the second disconnection command, the electromagnets 330 on the first heat exchange wall 314 and the second heat exchange wall 324 both generate the first magnetic attraction force, at this time, the mutual attraction force between the electromagnet 330 on the first heat exchange wall 314 and the electromagnet 330 on the second heat exchange wall 324 is smaller, and an operator can easily separate the first heat exchange wall 314 from the second heat exchange wall 324. After the first heat exchange wall 314 is separated from the second heat exchange wall 324, the current of the electromagnet 330 on the first heat exchange wall 314 and the current of the electromagnet 330 on the second heat exchange wall 324 are cut off, so that the electromagnet 330 on the first heat exchange wall 314 and the electromagnet 330 on the second heat exchange wall 324 no longer have adsorption capacity, and the first heat exchange wall 314 and the second heat exchange wall 324 are prevented from being connected with other magnetic components around the first heat exchange wall 314 and the second heat exchange wall 324.

Battery thermal management system

According to another aspect of the present disclosure, as shown in fig. 4 and 7, the present disclosure also provides a battery thermal management system that includes an on-board battery thermal management system 100 and a charging station thermal management system 200. The battery heat management system comprises a battery heat exchange flow path 101 and the first part 310 of the heat exchanger 300, wherein a first end of the battery heat exchange flow path 101 is communicated with a first heat exchanger port 312 of the first part 310, a second end of the battery heat exchange flow path 101 is communicated with a second heat exchanger port 313 of the first part 310, and the battery heat exchange flow path 101 is configured to enable a battery pack 400 of a vehicle to be arranged on the battery heat exchange flow path 101; the charging station thermal management system 200 comprises a heat exchanger unit, a first flow path 201, a second flow path 202 and the second part 320 of the heat exchanger 300, wherein the first end of the first flow path 201 is communicated with the third port 322 of the heat exchanger of the second part 320, the second end of the first flow path 201 is communicated with the first port of the heat exchanger unit, the first end of the second flow path 202 is communicated with the fourth port 323 of the heat exchanger of the second part 320, and the second end of the second flow path 202 is communicated with the second port of the heat exchanger unit.

By means of the technical scheme, the coolant in the charging station thermal management system 200 can flow into the second heat exchange cavity 321 of the second portion 320 through the first flow path 201 or the second flow path 202 and flow out of the second heat exchange cavity 321 from the second flow path 202 or the first flow path 201, the coolant in the vehicle-mounted battery thermal management system 100 can flow into the first heat exchange cavity 311 of the first portion 310 through the battery heat exchange flow path 101, when the first portion 310 is connected with the second portion 320, and the first heat exchange wall 314 of the first portion 310 is attached to the second heat exchange wall 324 of the second portion 320, the coolant in the vehicle-mounted battery thermal management system 100 can exchange heat with the coolant in the charging station thermal management system 200 through the heat exchanger 300 to absorb heat of the coolant in the charging station thermal management system 200, or the coolant in the charging station thermal management system 200 can release heat, so as to cool or heat the battery pack 400 arranged on the battery heat exchange flow path 101, and the coolant returning to the heat exchange unit from the first flow path 201 or the second flow path 202 can continue to provide heat for the vehicle-mounted battery thermal management system 100.

When cooling or heating of battery pack 400 is completed, vehicle battery thermal management system 100 and charging station thermal management system 200 can be separated by separating first portion 310 from second portion 320, so that vehicle battery thermal management system 100 and charging station thermal management system 200 can operate independently without mutual influence. In the process of separating the first section 310 and the second section 320, the battery heat exchange flow path 101 is still connected to the heat exchanger first port 312 and the heat exchanger second port 313, and the first flow path 201 and the second flow path 202 are still connected to the heat exchanger third port 322 and the heat exchanger fourth port 323, respectively, so that the coolant in the battery heat exchange flow path 101, the first flow path 201, and the second flow path 202 does not leak due to the separation of the first section 310 and the second section 320.

In addition, in the present disclosure, when the vehicle is charged, the battery pack 400 is cooled or heated by the charging station thermal management system 200 outside the vehicle, and the battery pack 400 is not cooled or heated by an air-cooled radiator or a vehicle-mounted air conditioning system provided in the vehicle as in the prior art, so that the battery pack 400 does not discharge while being charged, which is advantageous for shortening the charging time of the battery pack 400.

The charging station thermal management systems 200 of the on-vehicle battery thermal management system 100 in the above-described battery thermal management system will be described in detail below, respectively.

Charging station thermal management system 200 and charging station

According to still another aspect of the present disclosure, as shown in fig. 4 to 9, there is further provided a charging station thermal management system 200, where the charging station thermal management system 200 includes a heat exchanger unit, a first flow path 201, a second flow path 202, and the second part 320 of the heat exchanger 300, a first end of the first flow path 201 is communicated with a third port 322 of the heat exchanger of the second part 320, a second end of the first flow path 201 is communicated with the first port of the heat exchanger unit, a first end of the second flow path 202 is communicated with a fourth port 323 of the heat exchanger of the second part 320, and a second end of the second flow path 202 is communicated with the second port of the heat exchanger unit.

In the first embodiment of the heat exchanger unit provided by the present disclosure, as shown in fig. 4, the heat exchanger unit includes a first plate heat exchanger 203, a compressor 204, a condenser 205, an expansion valve 206, a first branch, and a second branch, a second end of the first flow path 201 is communicated with a first port of the first plate heat exchanger 203, a second end of the second flow path 202 is communicated with a second port of the first plate heat exchanger 203, an outlet of the compressor 204 is communicated with a first port of the condenser 205 via the first branch, a second port of the condenser 205 is communicated with a third port of the first plate heat exchanger 203 via the expansion valve 206, a fourth port of the first plate heat exchanger 203 is communicated with an inlet of the compressor 204 via the second branch, the first port of the first plate heat exchanger 203 is a first port of the heat exchanger unit, and the second port of the first plate heat exchanger 203 is a second port of the heat exchanger unit.

When the second portion 320 of the heat exchanger 300 in the charging station thermal management system 200 is connected to the first portion 310 of the heat exchanger 300 in the vehicle-mounted battery thermal management system 100 and cooling needs to be provided to the battery pack 400 in the vehicle-mounted battery thermal management system 100 by the heat exchanger unit, as shown in fig. 5, the outlet of the compressor 204 discharges a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters the condenser 205 through the first branch and is cooled and condensed in the condenser 205, so that a medium-temperature liquid refrigerant flows out of the second port of the condenser 205, the medium-temperature liquid refrigerant is throttled and depressurized by the expansion valve 206 to become a low-temperature low-pressure liquid refrigerant, the low-temperature liquid refrigerant enters the first plate heat exchanger 203 through the third port of the first plate heat exchanger 203, the high-temperature coolant after heat exchange, which flows out from the third port 322 of the heat exchanger in the second portion 320 of the heat exchanger 300, flows into the first plate heat exchanger 203 from the first port of the first plate heat exchanger 203 through the first flow path 201, and in the first plate heat exchanger 203, the first port and the second port of the first plate heat exchanger 203 communicate with each other, and the third port and the fourth port of the first plate heat exchanger communicate with each other, so that the high-temperature coolant flowing into the first plate heat exchanger 203 from the first flow path 201 exchanges heat with the low-temperature and low-pressure liquid refrigerant flowing into the first plate heat exchanger 203 from the expansion valve 206, and the refrigerant absorbs heat of the high-temperature coolant to cause the low-temperature coolant to flow out from the second port of the first plate heat exchanger 203, and the low-temperature coolant flows into the second heat exchange chamber 321 of the second portion 320 of the heat exchanger 300 through the second flow path 202, and the low-temperature coolant after heat release flows back to the compressor 204 through the second branch path. In the heat exchanger 300, since the first heat exchange wall 314 and the second heat exchange wall 324 are in a mutually attached state, the low-temperature coolant flowing into the second heat exchange cavity 321 from the second flow path 202 exchanges heat with the coolant in the first heat exchange cavity 311 of the first portion 310, so that the temperature of the coolant in the first heat exchange cavity 311 is reduced, the low-temperature coolant flowing out of the first port 312 of the heat exchanger on the first portion 310 flows into the battery heat exchange flow path 101, the battery pack 400 arranged on the battery heat exchange flow path 101 is cooled, and the purpose of cooling the battery pack 400 through the charging station heat management system 200 arranged on the charging station is achieved.

Optionally, the heat exchanger unit may further include a first water pump 207, the first water pump 207 is disposed on the first flow path 201 and/or the second flow path 202, and the first water pump 207 may enable the coolant to circulate in a loop formed by the first flow path 201, the first plate heat exchanger 203, the second flow path 202, and the second portion 320 of the heat exchanger 300.

When the ambient temperature is low, the battery pack 400 may have a low temperature before charging or in an initial charging stage, and the battery pack 400 needs to be heated to be within a suitable charging temperature, in order to enable the heat exchange unit to also provide heat for the battery pack 400, the heat exchange unit may further include a third branch and a fourth branch, an outlet of the compressor 204 is selectively communicated with the first port of the condenser 205 through the first branch or is communicated with the fourth port of the first plate heat exchanger 203 through the third branch, and an inlet of the compressor 204 is selectively communicated with the fourth port of the first plate heat exchanger 203 through the second branch or is communicated with the first port of the condenser 205 through the fourth branch, so that the heat exchange unit has a first working state and a second working state.

In a first operating state, as shown in fig. 5, the outlet of the compressor 204 is communicated with the first port of the condenser 205 via the first branch, the inlet of the compressor 204 is communicated with the fourth port of the first plate heat exchanger 203 via the second branch, and the refrigerant discharged from the outlet of the compressor 204 flows through the condenser 205, the expansion valve 206 and the first plate heat exchanger 203 in sequence, and in this operating state, the heat exchanger set can provide cooling energy for the battery pack 400, thereby cooling the battery pack 400.

In the second operating state, as shown in fig. 6, the outlet of the compressor 204 is communicated with the fourth port of the first plate heat exchanger 203 via the third branch, the inlet of the compressor 204 is communicated with the first port of the condenser 205 via the fourth branch, and the refrigerant discharged from the outlet of the compressor 204 sequentially flows through the first plate heat exchanger 203, the expansion valve 206 and the condenser 205, and in this operating state, the heat exchanger unit can provide heat for the battery pack 400, thereby heating the battery pack 400. Specifically, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet of the compressor 204 enters the first plate heat exchanger 203 through the third branch, the low-temperature coolant in the second portion 320 of the heat exchanger 300 flows into the first plate heat exchanger 203 through the first flow path 201, heat exchange is performed between the low-temperature coolant and the high-temperature coolant in the first plate heat exchanger 203, the temperature of the coolant is increased, the temperature of the coolant is decreased, the high-temperature coolant flows out of the second port of the first plate heat exchanger 203, the high-temperature coolant flows into the second portion 320 of the heat exchanger 300 through the second flow path 202, heat exchange is performed between the high-temperature coolant in the second portion 320 of the heat exchanger 300 and the low-temperature coolant in the first portion 310 of the heat exchanger 300, so that the high-temperature coolant flows out of the first port 312 of the heat exchanger on the first portion 310 of the heat exchanger 300, and the high-temperature coolant flows into the battery heat exchange flow path 101 to heat the battery pack 400 arranged on the battery heat exchange flow path 101. The heat-exchanged refrigerant flowing out of the third port of the first plate heat exchanger 203 is throttled and depressurized by the expansion valve 206, and enters the condenser 205, a low-temperature low-pressure refrigerant flows out of the first port of the condenser 205, and the low-temperature low-pressure refrigerant flows back to the compressor 204 through the fourth branch line.

Alternatively, in order to realize that the outlet of the compressor 204 is selectively communicated with the first port of the condenser 205 through the first branch or communicated with the fourth port of the first plate heat exchanger 203 through the third branch, and the inlet of the compressor 204 is selectively communicated with the fourth port of the first plate heat exchanger 203 through the second branch or communicated with the first port of the condenser 205 through the fourth branch, as shown in fig. 4, the heat exchanger unit may further comprise a four-way valve 212, wherein the four-way valve 212 is simultaneously arranged on the first branch, the second branch, the third branch and the fourth branch, an a port of the four-way valve 212 is communicated with the inlet of the compressor 204, a port B of the four-way valve 212 is communicated with the outlet of the compressor 204, a port C of the four-way valve 212 is communicated with the first port of the condenser 205, and a port D of the four-way valve 212 is communicated with the fourth port of the first plate heat exchanger 203;

in the first operation state, as shown in fig. 5, the port a of the four-way valve 212 is communicated with the port D, the port B of the four-way valve 212 is communicated with the port C, so that the outlet of the compressor 204 is communicated with the first port of the condenser 205 through the first branch, and the inlet of the compressor 204 is communicated with the fourth port of the first plate heat exchanger 203 through the second branch. Here, a flow path from the outlet of the compressor 204 to the first port of the condenser 205 via the port B of the four-way valve 212 and the port C of the four-way valve 212 is the first branch, and a flow path from the fourth port of the first plate heat exchanger 203 to the inlet of the compressor 204 via the port D of the four-way valve 212 and the port a of the four-way valve 212 is the second branch.

In the second operation state, as shown in fig. 6, the port a of the four-way valve 212 is communicated with the port C, the port B of the four-way valve 212 is communicated with the port D, so that the outlet of the compressor 204 is communicated with the fourth port of the first plate heat exchanger 203 via the third branch, and the first port of the condenser 205 is communicated with the inlet of the compressor 204 via the fourth branch. Here, a flow path from the outlet of the compressor 204 to the fourth port of the first plate heat exchanger 203 via the port B of the four-way valve 212 and the port D of the four-way valve 212 is the third branch, and a flow path from the first port of the condenser 205 to the inlet of the compressor 204 via the port C of the four-way valve 212 and the port a of the four-way valve 212 is the fourth branch.

In a second embodiment of the heat exchanger unit provided by the present disclosure, as shown in fig. 7, the heat exchanger unit includes a compressor 204, a condenser 205, an expansion valve 206, a first branch and a second branch, an outlet of the compressor 204 is communicated with a first port of the condenser 205 via the first branch, a second port of the condenser 205 is communicated with an inlet of the expansion valve 206, an outlet of the expansion valve 206 is communicated with a second end of the first flow path 201, an inlet of the compressor 204 is communicated with a first end of the second branch, a second end of the second branch is communicated with a second end of the second flow path 202, an outlet of the expansion valve 206 is a first port of the heat exchanger unit, and a second end of the second branch is a second port of the heat exchanger unit.

In this embodiment, the outlet of the compressor 204 discharges a high-temperature and high-pressure gaseous refrigerant, the high-temperature and high-pressure gaseous refrigerant enters the condenser 205 through the first branch, and is cooled and condensed in the condenser 205, so that a medium-temperature liquid refrigerant flows out from the second port of the condenser 205, the medium-temperature liquid refrigerant is throttled and depressurized by the expansion valve 206 and then becomes a low-temperature and low-pressure liquid refrigerant, the low-temperature and low-pressure liquid refrigerant flows into the first flow path 201 and flows into the second heat exchange cavity 321 from the third port 322 of the heat exchanger on the second portion 320 of the heat exchanger 300 through the first flow path 201, the refrigerant in the second heat exchange cavity 321 exchanges heat with the coolant in the first heat exchange cavity 311, so that the temperature of the coolant in the first heat exchange cavity 311 is increased, and the low-temperature coolant can flow out from the first port 312 of the heat exchanger on the first portion 310 of the heat exchanger 300, and the low-temperature coolant enters the battery heat exchange flow path 101 to cool the battery pack 400 disposed on the battery heat exchange flow path 101.

Optionally, when the ambient temperature is low, the battery pack 400 may have a low temperature condition before charging or in an initial charging stage, and the battery pack 400 needs to be heated to be within a suitable charging temperature, in order to enable the heat exchanger set to also provide heat for the battery pack 400, the heat exchanger set may further include a third branch and a fourth branch, an outlet of the compressor 204 is communicated with a first end of the third branch, and a second end of the third branch is communicated with a second end of the second flow path 202. The outlet of the compressor 204 is capable of selectively communicating with a first port of the condenser 205 via a first branch or with a second end of the second flow path 202 via a third branch; the inlet of the compressor 204 can selectively communicate with the second end of the second flow path 202 via a second branch or with the first port of the condenser 205 via a fourth branch to enable the heat exchanger set to have a first operating state and a second operating state. Here, the second end of the second branch and the second end of the first flow path 201 are both the second ports of the heat exchanger unit.

In a first operating state, as shown in fig. 8, the outlet of the compressor 204 is communicated with the condenser 205 via the first branch, the inlet of the compressor 204 is communicated with the second end of the second flow path 202 via the second branch, and the refrigerant discharged from the outlet of the compressor 204 sequentially passes through the first branch, the condenser 205, the expansion valve 206, the first flow path 201, the second portion 320 of the heat exchanger 300, the second flow path 202, the second branch, and finally returns to the compressor 204, and in this operating state, the heat exchanger set provides cooling energy to the battery pack 400 to cool the battery pack 400.

In a second operation state, as shown in fig. 9, the outlet of the compressor 204 is communicated with the second end of the second flow path 202 via the third branch, the inlet of the compressor 204 is communicated with the first port of the condenser 205 via the fourth branch, and the refrigerant discharged from the outlet of the compressor 204 sequentially passes through the third branch, the second flow path 202, the second portion 320 of the heat exchanger 300, the first flow path 201, the expansion valve 206, the condenser 205, and the fourth branch, and finally returns to the compressor 204, and in this operation state, the heat exchanger set provides heat to the battery pack 400 to heat the battery pack 400.

To enable the outlet of the compressor 204 to selectively communicate with the first port of the condenser 205 via a first branch or with the second end of the second flow path 202 via a third branch; the inlet of the compressor 204 can selectively communicate with the second end of the second flow path 202 via a second branch or with the first port of the condenser 205 via a fourth branch. In an embodiment provided by the present disclosure, as shown in fig. 7, the heat exchanger unit further includes a four-way valve 212, the four-way valve 212 is disposed on the first branch, the second branch, the third branch and the fourth branch at the same time, an a port of the four-way valve 212 is communicated with an inlet of the compressor 204, a B port of the four-way valve 212 is communicated with an outlet of the compressor 204, a C port of the four-way valve 212 is communicated with a first port of the condenser 205, a D port of the four-way valve 212 is communicated with a second end of the second flow path 202, and a D port of the four-way valve 212 is a second port of the heat exchanger unit.

In the first operation state, as shown in fig. 8, the port a of the four-way valve 212 is connected to the port D, the port B of the four-way valve 212 is connected to the port C, so that the outlet of the compressor 204 is connected to the condenser 205 via the first branch, and the inlet of the compressor 204 is connected to the second end of the second flow path 202 via the second branch. Here, a flow path from the outlet of the compressor 204 to the first port of the condenser 205 via the port B of the four-way valve 212 and the port C of the four-way valve 212 is the first branch, and a flow path from the second end of the second flow path 202 to the inlet of the compressor 204 via the port D of the four-way valve 212 and the port a of the four-way valve 212 is the second branch.

In the second operation state, as shown in fig. 9, the port a of the four-way valve 212 is communicated with the port C, the port B of the four-way valve 212 is communicated with the port D, so that the outlet of the compressor 204 is communicated with the second end of the second flow path 202 via the third branch, and the inlet of the compressor 204 is communicated with the first port of the condenser 205 via the fourth branch. Here, a flow path from the outlet of the compressor 204 to the second end of the second flow path 202 via the port B of the four-way valve 212 and the port D of the four-way valve 212 is the third branch, and a flow path from the first port of the condenser 205 to the inlet of the compressor 204 via the port C of the four-way valve 212 and the port a of the four-way valve 212 is the fourth branch.

The difference between the first embodiment and the second embodiment of the heat exchanger set is that in the first embodiment of the heat exchanger set, in addition to the compressor 204, the condenser 215, the expansion valve 206 and the four-way valve 212, the heat exchanger set further includes the first plate heat exchanger 203, in this embodiment, the heat exchanger in the heat exchanger set exchanges heat with the heat exchanger flowing into the first plate heat exchanger 201 from the first flow path 201 through the first plate heat exchanger 203, and the heat exchangers in the first flow path 201 and the second flow path 202 are not mixed with the heat exchanger in the heat exchanger set, so that a heat exchanger of a type different from that in the heat exchanger set can be used in the first flow path 201 and the second flow path 202, for example, the heat exchanger in the heat exchanger set may be a refrigerant, and the heat exchangers in the first flow path 201 and the second flow path 202 may be a cooling liquid. In the second embodiment of the heat exchanger unit, the heat exchanger in the first flow path 201 directly flows into the heat exchanger unit to exchange heat, and the same heat exchanger, for example, a refrigerant, is used in the first flow path 201, the second flow path 202, and the heat exchanger unit. In practical applications, the heat exchanger set of the first embodiment or the second embodiment can be selected and used according to factors such as required heat exchange efficiency, production cost and the like.

As shown in fig. 4 and 7, the first channel 201 is provided with a first temperature sensor 209, the second channel 202 is provided with a second temperature sensor 210, and the first channel 201 and/or the second channel 202 is provided with a flow rate sensor 211. The first temperature sensor 209 may detect a temperature of the cooling liquid or the cooling medium in the first flow path 201, and the second temperature sensor 210 may detect a temperature of the cooling liquid or the cooling medium in the second flow path 202, so as to monitor a heat exchange efficiency of the heat exchanger 300. The flow rate sensor 211 may detect the flow rate of the coolant or the refrigerant in the first flow path 201 and/or the second flow path 202.

Alternatively, as shown in fig. 4, a first replenishment tank 208 may be bypassed to the first flow path 201 or the second flow path 202. First fluid replenishment tank 208 may be used to replenish a coolant or coolant in charging station thermal management system 200.

According to another aspect of the present disclosure, there is also provided a charging station that may include the charging station thermal management system 200 described above.

Alternatively, the charging station may comprise a support structure for supporting the second portion 320 of the heat exchanger 300, and the control module of the heat exchanger 300 may be provided on the second portion 320 for:

when the second portion 320 is disengaged from the support structure, a first current is controlled to pass through the electromagnet 330 to generate a first magnetic attraction force, and when the first heat exchange wall 314 of the first portion 310 is engaged with the second heat exchange wall 324 of the second portion 320, a second current is controlled to pass through the electromagnet 330 to generate a second magnetic attraction force, the first current being less than the second current, and the first magnetic attraction force being less than the second magnetic attraction force.

When an operator picks up second portion 320 and disengages second portion 320 from the support structure, indicating that second portion 320 is about to be connected to first portion 310 and that charging station thermal management system 200 is about to be connected to on-board battery thermal management system 100 and exchange heat, a first current is applied to electromagnet 330 disposed on second portion 320 to enable electromagnet 330 to provide a first magnetic attraction force that connects second portion 320 to first portion 310. When the first heat exchange wall 314 of the first portion 310 is attached to the second heat exchange wall 324 of the second portion 320, a second current is applied to the electromagnet 330, and at this time, the electromagnet 330 generates a second magnetic attraction force larger than the first magnetic attraction force, so that the electromagnet 330 can tightly and firmly attach the first heat exchange wall 314 to the second heat exchange wall 324.

Vehicle-mounted battery thermal management system 100 and vehicle

As shown in fig. 4 to 10, according to still another aspect of the present disclosure, there is also provided an on-vehicle battery thermal management system 100, including a battery heat exchange flow path 101 and the first portion 310 of the heat exchanger 300 described above, a first end of the battery heat exchange flow path 101 communicates with the heat exchanger first port 312 of the first portion 310, a second end of the battery heat exchange flow path 101 communicates with the heat exchanger second port 313 of the first portion 310, and the battery heat exchange flow path 101 is configured to enable a battery pack 400 of a vehicle to be disposed on the battery heat exchange flow path 101.

As shown in fig. 4-9, when second portion 320 of heat exchanger 300 disposed in charging station thermal management system 200 is coupled to first portion 310 of heat exchanger 300 disposed in on-board battery thermal management system 100, charging station thermal management system 200 can exchange heat with on-board battery thermal management system 100, and charging station thermal management system 200 can provide cooling or heat to on-board battery thermal management system 100 to cool or heat battery pack 400 disposed on-board battery thermal management system 100.

Alternatively, a control module of the heat exchanger 300 may be provided on the first portion 310, the control module being configured to:

when the cover plate of the vehicle is opened and the first portion 310 is exposed, a first current is controlled to pass through the electromagnet 330 to generate a first magnetic attraction force, and when the first heat exchange wall 314 of the first portion 310 is engaged with the second heat exchange wall 324 of the second portion 320, a second current is controlled to pass through the electromagnet 330 to generate a second magnetic attraction force, wherein the first current is smaller than the second current, and the first magnetic attraction force is smaller than the second magnetic attraction force.

Here, the cover means that a receiving groove for mounting the first part 310 may be formed on the vehicle body when the first part 310 is mounted on the vehicle, the cover being a barrier structure for covering an opening of the receiving groove, the cover exposing the first part 310 when the cover is opened, and covering the first part 310 when the cover is closed.

When the cover is opened and exposes the first portion 310, it is stated that the first portion 310 is about to be connected to the second portion 320 and the charging station thermal management system 200 is about to be connected to the on-board battery thermal management system 100 and exchange heat, and at this time, a first current is applied to the electromagnet 330 disposed on the first portion 310, so that the electromagnet 330 can provide a first magnetic attraction force that connects the first portion 310 to the second portion 320. When the first heat exchange wall 314 of the first portion 310 is attached to the second heat exchange wall 324 of the second portion 320, a second current is applied to the electromagnet 330, and at this time, the electromagnet 330 generates a second magnetic attraction force larger than the first magnetic attraction force, so that the electromagnet 330 can tightly and firmly attach the first heat exchange wall 314 to the second heat exchange wall 324.

Optionally, the control module may be further configured to:

when the information representing the completion of the charging of the battery pack 400 is acquired, a first pre-disconnection instruction is generated, the current passing through the electromagnet 330 on the first heat exchange wall 314 is controlled to be switched from the second current to the first current according to the first pre-disconnection instruction, and the current of the electromagnet 330 on the first heat exchange wall 314 is disconnected after the cover plate of the vehicle covers the first portion 310.

The above described functionality of the control module may be applied in scenarios where charging station thermal management system 200 provides cooling to on-board battery thermal management system 100 to cool battery pack 400 while in a charged state. In particular implementations, the control module may be coupled to a battery management module of the vehicle to obtain information from the battery management module indicative of the completion of charging of the battery pack 400. The control module obtains information indicating that the charging of the battery pack 400 is complete, indicating that cooling of the battery pack 400 may be completed, and generates a first pre-disconnect command to reduce the magnetic attraction between the first and second

heat exchange walls

314, 324 so that the operator can separate the first portion 310 from the second portion 320.

Furthermore, the control module disconnects the current to the electromagnet 330 on the first heat exchange wall 314 after the cover plate of the vehicle covers the first portion 310 is an alternative embodiment, alternatively, the control module may disconnect the current to the electromagnet 330 on the first heat exchange wall 314 upon determining that the first portion 310 is separated from the second portion 320.

As an embodiment, the vehicle-mounted battery thermal management system 100 may further include a second plate heat exchanger 103 and a second water pump 104, which are disposed on the battery heat exchange flow path 101, and the second plate heat exchanger 103 is also located in a vehicle-mounted air conditioning system of the vehicle at the same time, so that the vehicle-mounted battery thermal management system 100 can exchange heat with the vehicle-mounted air conditioning system through the second plate heat exchanger 103. When the vehicle-mounted battery thermal management system 100 is not connected to the charging station thermal management system 200 through the heat exchanger 300, that is, when the vehicle is in the independent driving state, if the temperature of the battery pack 400 is high or low, the battery heat exchange flow path 101 can exchange heat with the vehicle-mounted air conditioning system through the second plate heat exchanger 103, so that the battery pack 400 is cooled or heated in the independent driving state of the vehicle, and at this time, as shown in fig. 10, since the first portion 310 of the heat exchanger 300 is not connected to the second portion 320 of the heat exchanger 300, heat exchange of the coolant does not occur in the first portion 310 of the heat exchanger 300.

Optionally, as shown in fig. 10, the vehicle-mounted battery thermal management system 100 may further include a second fluid supplement tank 105 that bypasses the battery heat exchange flow path 101. The coolant in the battery heat exchange flow path 101 may be exhausted by the second fluid replenishing tank 105 that is bypassed to the battery heat exchange flow path 101 to discharge air bubbles in the coolant, and the second fluid replenishing tank 105 may also be used to replenish the coolant in the battery heat exchange flow path 101.

According to still another aspect of the present disclosure, there is also provided a vehicle including the battery pack 400 and the above-described on-vehicle battery thermal management system 100, the battery pack 400 being disposed on the battery heat exchange flow path 101 of the on-vehicle battery thermal management system 100.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A heat exchanger, comprising:

a first part (310), wherein the first part (310) is hollow inside and forms a first heat exchange cavity (311), a first port (312) and a second port (313) of the heat exchanger which are communicated with the first heat exchange cavity (311) are arranged on the first part (310), and the first part (310) is provided with a first heat exchange wall (314);

a second part (320), wherein the second part (320) is hollow and forms a second heat exchange cavity (321), a third port (322) of the heat exchanger and a fourth port (323) of the heat exchanger which are communicated with the second heat exchange cavity (321) are arranged on the second part (320), and the second part (320) is provided with a second heat exchange wall (324);

wherein the first heat exchange wall (314) and the second heat exchange wall (324) are configured to be adapted to be attached to each other, the first portion (310) and the second portion (320) are detachably connectable to each other, and the first heat exchange wall (314) and the second heat exchange wall (324) are attached to each other when the first portion (310) and the second portion (320) are connected.

2. A heat exchanger according to claim 1, wherein the first heat exchange wall (314) and the second heat exchange wall (324) are each formed in a wave shape to enable the first heat exchange wall (314) and the second heat exchange wall (324) to engage with each other.

3. A heat exchanger according to claim 1, wherein a plurality of first heat dissipation fins (315) are arranged in the first heat exchange chamber (311), the plurality of first heat dissipation fins (315) are arranged at intervals along the flowing direction of the heat exchange agent in the first heat exchange chamber (311), one end of each first heat dissipation fin (315) is connected with the first heat exchange wall (314), and the other end extends towards the direction away from the first heat exchange wall (314); and/or the presence of a gas in the gas,

a plurality of second heat radiating fins (325) are arranged in the second heat exchange cavity (321), the second heat radiating fins (325) are arranged at intervals along the flowing direction of the heat exchange agent in the second heat exchange cavity (321), one end of each second heat radiating fin (325) is connected with the second heat exchange wall (324), and the other end of each second heat radiating fin extends towards the direction deviating from the second heat exchange wall (324).

4. A heat exchanger according to claim 3, wherein the first heat dissipation fin (315) is provided with a first through hole (3151) for flowing a heat exchange agent in the first heat exchange cavity (311); and/or the presence of a gas in the gas,

and a second through hole (3251) for allowing the heat exchange agent in the second heat exchange cavity (321) to flow through is formed in the second heat dissipation fin (325).

5. A heat exchanger according to claim 4, wherein the first through holes (3151) are plural, the plural first through holes (3151) are arranged in an array on the first heat dissipation fin (315), and the size of each first through hole (3151) increases in turn from the direction close to the first heat exchange wall (314) to the direction away from the first heat exchange wall (314); and/or the presence of a gas in the gas,

the number of the second through holes (3251) is multiple, the second through holes (3251) are arranged on the second heat dissipation fin (325) in an array manner, and the size of each second through hole (3251) increases in sequence from the direction close to the second heat exchange wall (324) to the direction far away from the second heat exchange wall (324).

6. A heat exchanger according to claim 1, wherein the heat exchanger (300) comprises a first baffle plate (316) and a second baffle plate (317) arranged in the first heat exchange chamber (311), the first portion (310) has a first side wall (318) opposite to the first heat exchange wall (314), the cavity between the first heat exchange wall (314) and the first side wall (318) is the first heat exchange chamber (311), one end of the first baffle plate (316) is connected to the first heat exchange wall (314), the other end extends towards the first side wall (318) with a gap therebetween, one end of the second baffle plate (317) is connected to the first side wall (318), the other end extends towards the first heat exchange wall (314) with a gap therebetween, the first baffle plate (316) and the second baffle plate (317) are arranged alternately in the direction of the flow of the heat exchange agent in the first heat exchange chamber (311); and/or the presence of a gas in the gas,

the heat exchanger (300) further comprises a third baffle plate (326) and a fourth baffle plate (327) disposed in the second heat exchange cavity (321), the second portion (320) has a second side wall (328) opposite to the second heat exchange wall (324), the cavity between the second heat exchange wall (324) and the second side wall (328) is the second heat exchange cavity (321), one end of the third baffle plate (326) is connected with the second heat exchange wall (324), the other end extends towards the second side wall (328) and has a gap with the second side wall (328), one end of the fourth baffle plate (327) is connected with the second side wall (328), the other end extends towards the second heat exchange wall (324) and has a gap with the second heat exchange wall (324), and the third baffle plate (326) and the fourth baffle plate (327) are arranged in a staggered manner with each other along the flow direction of the heat exchange agent in the second heat exchange cavity (321).

7. A heat exchanger according to any of claims 1-6, characterized in that the heat exchanger (300) further comprises an electromagnet (330);

the electromagnets (330) are arranged on the first heat exchange wall (314) and the second heat exchange wall (324), and the electromagnet (330) on the first heat exchange wall (314) and the electromagnet (330) on the second heat exchange wall (324) can generate magnetic attraction force and attract each other when being electrified; alternatively, the first and second electrodes may be,

one of the first heat exchange wall (314) and the second heat exchange wall (324) is provided with the electromagnet (330), and the other one is provided with a magnetic heat exchange wall, wherein the electromagnet (330) can generate magnetic attraction force for attracting the magnetic heat exchange wall when being electrified.

8. The heat exchanger of claim 7, further comprising a control module;

the control module is used for controlling a first current to pass through the electromagnet (330) so as to generate a first magnetic attraction force, and controlling a second current to pass through the electromagnet (330) so as to generate a second magnetic attraction force when the first heat exchange wall (314) is attached to the second heat exchange wall (324), wherein the first current is smaller than the second current, and the first magnetic attraction force is smaller than the second magnetic attraction force.

9. A heat exchanger according to claim 8, wherein the control module is further configured to, in a case where the first heat exchange wall (314) and the second heat exchange wall (324) are in a fit state under the second magnetic attraction force, disconnect the current of the electromagnet (330) by any one of the following methods:

-switching off the current of the electromagnet (330) according to a first switching-off command;

controlling the current passing through the electromagnet (330) to be switched from the second current to the first current according to a first pre-turn-off command, and turning off the current of the electromagnet (330) after the first heat exchange wall (314) is separated from the second heat exchange wall (324).

10. A heat exchanger according to claim 8, wherein the electromagnets (330) are disposed on both the first heat exchange wall (314) and the second heat exchange wall (324), and the control module is further configured to, in a case where the first heat exchange wall (314) and the second heat exchange wall (324) are in a bonded state under the second magnetic attraction, disconnect the current of the electromagnets (330) by:

according to a second pre-disconnection command, controlling the current passing through the electromagnet (330) on one of the first heat exchange wall (314) and the second heat exchange wall (324) to be switched from the second current to the first current, controlling the current passing through the electromagnet (330) on the other one of the first heat exchange wall (314) and the second heat exchange wall (324) to be switched from the second current to the first current according to a second disconnection command, and disconnecting the current of the electromagnet (330) on the first heat exchange wall (314) and the electromagnet (330) on the second heat exchange wall (324) after the first heat exchange wall (314) is disconnected from the second heat exchange wall (324).

11. A charging station comprising a charging station thermal management system (200), the charging station thermal management system (200) comprising a heat exchanger block, a first flowpath (201), a second flowpath (202), and the second portion (320) of the heat exchanger (300) of any of claims 1-10, a first end of the first flowpath (201) in communication with the heat exchanger third port (322) of the second portion (320), a second end of the first flowpath (201) in communication with a first port of the heat exchanger block, a first end of the second flowpath (202) in communication with the heat exchanger fourth port (323) of the second portion (320), a second end of the second flowpath (202) in communication with a second port of the heat exchanger block.

12. The charging station according to any of the claims 11, wherein the heat exchanger (300) is a heat exchanger (300) according to any of the claims 8-10, the charging station comprising a support structure for supporting the second part (320), the control module being arranged on the second part (320), the control module controlling a first current through the electromagnet (330) to generate a first magnetic attraction force in particular comprising:

controlling a first current through the electromagnet (330) to generate a first magnetic attraction force when the second portion (320) is disengaged from the support structure.

13. An on-board battery thermal management system comprising a battery heat exchange flow path (101) and the first portion (310) of the heat exchanger (300) of any of claims 1-10, a first end of the battery heat exchange flow path (101) in communication with the heat exchanger first port (312) of the first portion (310) and a second end of the battery heat exchange flow path (101) in communication with the heat exchanger second port (313) of the first portion (310), the battery heat exchange flow path (101) configured to enable a battery pack (400) of a vehicle to be disposed on the battery heat exchange flow path (101).

14. The on-board battery thermal management system of claim 13, wherein the heat exchanger (300) is the heat exchanger (300) of any of claims 8-10, the control module disposed on the first portion (310), the control module controlling a first current through the electromagnet (330) to create a first magnetic attraction comprising:

controlling a first current through the electromagnet (330) to generate a first magnetic attraction force when a cover of the vehicle is open and the first portion (310) is exposed.

15. The on-board battery thermal management system of claim 13, wherein the heat exchanger (300) is the heat exchanger (300) of claim 8, and wherein the control module is disposed on the first portion (310), the control module being configured to:

when the information representing the charging completion of the battery pack (400) is acquired, a first pre-disconnection instruction is generated, the current passing through the electromagnet (330) on the first heat exchange wall (314) is controlled to be switched from the second current to the first current according to the first pre-disconnection instruction, and the current of the electromagnet (330) on the first heat exchange wall (314) is disconnected after the cover plate of the vehicle covers the first part (310).

16. A vehicle comprising a battery pack (400) and the on-board battery thermal management system (100) of any of claims 13-15, the battery pack (400) being disposed on the battery heat exchange flow path (101) of the on-board battery thermal management system (100).