Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, and relates to the field of batteries, and the battery device comprises a battery monomer; the heat exchange structure comprises a mounting plate facing the pipeline connector, the mounting plate comprises a mounting plate body and a mounting part, the mounting plate body is arranged around the mounting part in the circumferential direction of the mounting part, the mounting part is provided with a limiting wall, and the limiting wall protrudes out of the mounting plate body in the direction away from the heat exchange structure in the first direction; the pipeline connector is installed on the installation part and communicates with the heat exchange structure, and the pipeline connector makes contact with the limiting wall for limiting so that the pipeline connector and the installation plate body can be separated. Compared with the prior art, the assembly space in the battery device can be saved, the space utilization rate in the battery device can be improved, the transportation cost of the heat exchange structure can be reduced, the manufacturing cost of the battery device can be reduced, and the service life of the connecting pipeline and the heat exchange structure can be prolonged. And the use reliability of the battery device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery, in particular to a battery device and an electric device with the battery device. BACKGROUND

[0002] In the related art, the existing battery device is provided with a heat exchange structure and a pipeline joint. The heat exchange structure is provided with a communication joint. The pipeline joint is connected with the communication joint, so that the pipeline joint and the heat exchange structure are communicated. The pipeline joint is communicated with the heat exchange structure through the communication joint. The space in the box body of the battery device is limited. Since the communication joint is arranged, the communication joint occupies the space in the battery box body, which affects the arrangement of other components in the box body. In addition, along the arrangement direction of the heat exchange structure and the communication joint, the overall size of the heat exchange structure and the communication joint is high, which increases the transportation cost of the heat exchange structure. In addition, the pipeline joint is connected with a connecting pipeline. The connecting pipeline is easy to interfere with the heat exchange structure, which causes the wear of the connecting pipeline and the heat exchange structure, and affects the service life of the connecting pipeline and the heat exchange structure. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to solve at least one of the technical problems in the prior art. To this end, one object of the present application is to provide a battery device which can reduce the risk of interference between the connecting pipeline and the heat exchange structure, improve the use reliability of the battery device, improve the space utilization rate in the battery device, and reduce the manufacturing cost of the battery device.

[0004] The present application further provides an electric device.

[0005] In a first aspect, the embodiments of the present application provide a battery device, comprising:

[0006] a battery monomer;

[0007] a heat exchange structure and a pipeline joint, the heat exchange structure is in heat exchange cooperation with the battery monomer, the heat exchange structure and the pipeline joint are arranged along a first direction, the heat exchange structure has a mounting plate facing the pipeline joint, the mounting plate comprises a mounting plate body and a mounting portion, the mounting plate body is arranged around the mounting portion along the circumferential direction of the mounting portion, the mounting portion has a limiting wall, along the first direction, the limiting wall protrudes from the mounting plate body in a direction away from the heat exchange structure, the pipeline joint is mounted on the mounting portion and communicated with the heat exchange structure, the pipeline joint is in contact with the limiting wall to limit the spacing between the pipeline joint and the mounting plate body.

[0008] In the technical scheme, the pipeline joint is directly assembled to the mounting plate through the cooperation of the heat exchange structure and the pipeline joint, compared with the prior art, the arrangement of the communication joint can be saved, the assembly space in the battery device can be saved, the assembly space for other components in the battery device can be saved, the space utilization in the battery device is improved, the overall size of the heat exchange structure is reduced due to the absence of the communication joint, the heat exchange structure is convenient to transport, the transportation cost of the heat exchange structure is reduced, thereby the manufacturing cost of the battery device is reduced, in addition, the pipeline joint is in contact with the limiting wall to be limited, the pipeline joint is spaced apart from the mounting plate body, after the pipeline joint is installed and connected to the pipeline, the risk of interference between the connecting pipeline and the heat exchange structure is reduced, the service life of the connecting pipeline and the heat exchange structure is improved, and the use reliability of the battery device is improved.

[0009] In some embodiments, an outer surface of the pipeline joint forms a limiting boss, and when the pipeline joint is installed on the mounting portion, the limiting boss is located on a side of the limiting wall away from the heat exchange structure and in contact with the limiting wall.

[0010] In the technical scheme, when the pipeline joint is installed on the mounting portion, the limiting boss is in contact with the limiting wall to be limited, the limiting wall can support the pipeline joint, the risk of movement of the pipeline joint in the first direction into the heat exchange structure is reduced, the pipeline connecting portion of the pipeline joint and the mounting plate body are spaced apart in the first direction, the interference between the connecting pipeline and the heat exchange structure is reduced, the wear of the connecting pipeline and the heat exchange structure is reduced, the service life of the connecting pipeline and the heat exchange structure is improved, and the use reliability of the battery device is improved.

[0011] In some embodiments, the mounting portion further has an annular wall extending in the first direction to define a mounting through hole, and the pipeline joint has an assembly portion assembled in the mounting through hole.

[0012] In the technical scheme, the annular wall defines the mounting through hole extending in the first direction, and when the assembly portion is assembled in the mounting through hole, the annular wall can limit the assembly portion after the assembly portion is in contact with the annular wall, the risk of deflection of the assembly portion in the mounting through hole is reduced, and during the process of inserting the assembly portion into the mounting through hole from the upper end of the mounting through hole, the assembly portion is in contact with the annular wall, the annular wall can guide the pipeline joint, the assembly portion is conveniently assembled in the mounting through hole, and the assembly efficiency of the pipeline joint and the heat exchange structure is improved.

[0013] In some embodiments, the limiting wall is connected with the annular wall, and the limiting wall is arranged around the annular wall in the circumferential direction of the annular wall.

[0014] In the technical scheme, the limiting wall is arranged along the circumference of the annular wall, and the assembly part is inserted into the mounting hole, so that the limiting boss is in contact with the limiting wall for limiting, thereby making the structure of the mounting part reasonable.

[0015] In some embodiments, along the first direction, the annular wall is located inside the limiting wall, and the outer end of the annular wall is connected with the limiting wall.

[0016] In the technical scheme, along the first direction, the annular wall is located inside the limiting wall, so that the annular wall is arranged inside the heat exchange structure, compared with the annular wall exposed from the heat exchange structure, which is beneficial to reduce the volume of the heat exchange structure and reduce the occupied space of the heat exchange structure, and the limiting wall is connected with the outer end of the annular wall, so that the limiting wall and the annular wall are connected reasonably.

[0017] In some embodiments, the end of the assembly part facing the heat exchange structure is provided with a clamping structure, and the clamping structure is clamped and matched with the annular wall to limit the relative position of the pipeline joint and the annular wall along the first direction.

[0018] In the technical scheme, the clamping structure is clamped and matched with the annular wall, which can limit the movement of the pipeline joint relative to the annular wall along the first direction, so that the pipeline joint is reliably assembled in the mounting part, and the movement of the pipeline joint away from the second heat exchange plate along the first direction is limited, which reduces the risk of separation of the pipeline joint and the mounting part, and the pipeline joint and the heat exchange structure can be detachably connected, which is convenient for replacing the pipeline joint and is beneficial to improve the maintenance efficiency of the battery device.

[0019] In some embodiments, the clamping structure includes an elastic arm and a clamping boss, the elastic arm extends along the first direction, one end of the elastic arm facing the assembly part is fixedly connected with the assembly part, and the clamping boss is fixed to the outer circumferential wall of the elastic arm, and at least part of the clamping boss and the inner end surface of the annular wall are opposite along the first direction.

[0020] In the technical scheme, by arranging the elastic arm and the clamping boss, when the limiting boss and the inner end surface of the limiting wall are in contact, the limiting boss and the limiting wall are clamped, thereby reducing the risk of the pipeline joint moving out of the mounting hole along the first direction, so that the pipeline joint is reliably assembled in the mounting part, and the effect of detachably mounting the pipeline joint to the heat exchange structure is achieved.

[0021] In some embodiments, along the first direction, the end surface of the clamping boss facing the annular wall is a clamping inclined surface, and the clamping inclined surface is inclined away from the assembly part from the elastic arm to the clamping boss.

[0022] In the above technical solution, by setting the end face of the clamping boss facing the annular wall as a clamping bevel, when the assembly part of the pipe joint is inserted into place, it is beneficial to move at least part of the clamping boss to the bottom of the annular wall, so that the pipe joint and the heat exchange structure can be assembled tightly, which can reduce the shaking of the pipe joint and is also beneficial to absorb the assembly error of the pipe joint along the first direction.

[0023] In some embodiments, the angle between the engaging inclined surface and the second direction is greater than or equal to 5° and less than or equal to 15°, and the first direction is perpendicular to the second direction.

[0024] In the above technical solution, by making the angle between the clamping bevel and the second direction greater than or equal to 5° and less than or equal to 15°, when the assembly portion of the pipe joint is inserted into place, it is more conducive to moving at least part of the clamping boss to the bottom of the annular wall, making it easier for the clamping bevel to abut against the annular wall, and enabling the pipe joint and the heat exchange structure to be assembled more tightly, which can further reduce the shaking of the pipe joint and is more conducive to absorbing the assembly error of the pipe joint along the first direction.

[0025] In some embodiments, the battery device further includes: a sealing ring, which is sleeved on the assembly portion and located in the mounting through hole, and is used to seal the gap between the assembly portion and the annular wall.

[0026] In the above technical solution, by setting a sealing ring, the sealing ring can seal the gap between the assembly part and the annular wall, which is beneficial to improving the sealing between the assembly part and the annular wall and reducing the risk of the heat exchange medium in the heat exchange structure leaking from the gap between the assembly part and the annular wall.

[0027] In some embodiments, the mounting portion further has a support wall, which is connected between the limiting wall and the mounting plate body, and the support wall protrudes from the mounting plate body along a first direction away from the heat exchange structure so that the limiting wall protrudes from the mounting plate body.

[0028] In the above technical solution, the supporting wall is connected between the limiting wall and the mounting plate body. By protruding the supporting wall from the mounting plate body along the first direction away from the heat exchange structure, the limiting wall can be located on the side of the mounting plate body away from the second heat exchange plate, thereby achieving the effect of the limiting wall protruding from the mounting plate body in the direction away from the heat exchange structure, so that there is a height difference between the limiting wall and the mounting plate body along the first direction.

[0029] In a second aspect, an embodiment of the present application provides an electrical device comprising the above-mentioned battery device.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0032] Figure 1 is a schematic diagram of an electric device according to an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of a battery device according to an embodiment of the present application;

[0034] Figure 3 is an exploded view of a heat exchange structure, a pipe joint and a sealing ring according to an embodiment of the present application;

[0035] Figure 4 is an assembly schematic diagram of a heat exchange structure and a pipe joint according to an embodiment of the present application;

[0036] Figure 5 is a cross-sectional view of the heat exchange structure and the pipe joint after assembly according to an embodiment of the present application;

[0037] Figure 6 is Figure 5 a cross-sectional view at A-A in FIG. 8;

[0038] Figure 7 is another angle cross-sectional view of the heat exchange structure and the pipe joint after assembly according to an embodiment of the present application;

[0039] Figure 8 is Figure 7 an enlarged view at B in FIG. 8.

[0040] Reference signs:

[0041] battery device 100;

[0042] battery cell 10;

[0043] heat exchange structure 20; mounting plate 21; mounting plate body 211; mounting portion 212; limiting wall 213; annular wall 214; mounting through hole 215; supporting wall 216; heat exchange medium flow channel 217; first heat exchange plate 218; second heat exchange plate 219;

[0044] pipe joint 30; limiting boss 31; assembly portion 32; clamping structure 33; elastic arm 34; clamping boss 35; clamping inclined surface 36; pipe connecting portion 37; communicating flow channel 38;

[0045] sealing ring 40;

[0046] box body 50; first box body 51; second box body 52;

[0047] vehicle 200; controller 201; motor 202. DETAILED DESCRIPTION

[0048] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0050] In the present application, the phrase "embodiments" means that the specific features, structures or properties described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiments, nor is it necessarily mutually exclusive or alternative embodiments.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, C and / or D can mean that C exists alone, C and D exist together, and D exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0053] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the present application.

[0054] All embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions if there is no special description.

[0055] The "multiple" appearing in the present application refers to two or more (including two).

[0056] The battery device mentioned in the embodiments of the present application can include a plurality of battery cells connected in series, in parallel or in a mixed manner through a busbar component.

[0057] In some embodiments, the battery device includes a box body and a plurality of battery cells accommodated in the box body.

[0058] As an example, the plurality of battery cells can be accommodated in the box body by being directly fixed to the box body.

[0059] As an example, the box body can include a first box body and a second box body. The first box body and the second box body are buckled so that an installation cavity is formed inside the box body, and the installation cavity can accommodate the plurality of battery cells, i.e., the plurality of battery cells are installed in the installation cavity. Here, the closed refers to covered or closed, which can be sealed or unsealed. The first box body can be one of the upper box body and the lower box body, and the second box body can be the other of the upper box body and the lower box body.

[0060] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging the battery cell.

[0061] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0062] The battery cell can be in the shape of a cylinder, a flat body, a cuboid or other shapes, and the embodiments of the present application are not limited thereto. The battery cell is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft package battery cells, and the embodiments of the present application are not limited thereto.

[0063] The battery cell includes a shell, an electrode assembly and an electrolyte, the shell is used to accommodate the electrode assembly and the electrolyte. The electrode assembly is composed of an anode pole piece, a cathode pole piece and a separator film. The battery cell mainly relies on the movement of metal ions between the anode pole piece and the cathode pole piece to work. The anode pole piece includes an anode current collector and an anode active material layer, the anode active material layer is coated on the surface of the anode current collector, the anode current collector without the anode active material layer protrudes from the anode current collector with the anode active material layer, and the anode current collector without the anode active material layer serves as an anode tab. Taking a lithium ion battery as an example, the material of the anode current collector can be aluminum, and the anode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate, etc. The cathode pole piece includes a cathode current collector and a cathode active material layer, the cathode active material layer is coated on the surface of the cathode current collector, the cathode current collector without the cathode active material layer protrudes from the cathode current collector with the cathode active material layer, and the cathode current collector without the cathode active material layer serves as a cathode tab. The material of the cathode current collector can be copper, and the cathode active material can be carbon or silicon, etc. In order to ensure that the fuse does not occur when passing a large current, the number of anode tabs is multiple and stacked together, and the number of cathode tabs is multiple and stacked together.

[0064] The material of the separator film can be PP (polypropylene) or PE (polyethylene) or the like. In addition, the electrode assembly can be a winding type structure or a laminated type structure, and the embodiments of the present application are not limited thereto.

[0065] In recent years, vehicles have developed rapidly. Taking a new energy vehicle as an example, the battery device plays an irreplaceable important role as a core component of the vehicle.

[0066] In the related art, the existing battery device is provided with a heat exchange mechanism, the heat exchange mechanism includes a heat exchange structure, a communication connector and a pipeline connector, the heat exchange structure is provided with the communication connector, the pipeline connector is connected with the communication connector, so that the pipeline connector and the heat exchange structure are communicated, and the pipeline connector is communicated with the heat exchange structure through the communication connector. The space in the box body of the battery device is limited. Since the communication connector is arranged, the communication connector occupies the space in the battery box body, which affects the arrangement of other components in the box body. In addition, along the arrangement direction of the heat exchange structure and the communication connector, the overall size of the heat exchange structure and the communication connector is high, which increases the transportation cost of the heat exchange structure. In addition, the pipeline connector is connected with a connecting pipeline, the connecting pipeline is easy to interfere with the heat exchange structure, which causes the wear of the connecting pipeline and the heat exchange structure, and affects the service life of the connecting pipeline and the heat exchange structure.

[0067] Based on the above considerations, in order to solve the problem of interference and wear between the connecting pipeline and the heat exchange structure, and the problem of large space occupied by the heat exchange structure, after deep research, a battery device is designed, comprising: a battery monomer; a heat exchange structure and a pipeline joint, the heat exchange structure is in heat exchange cooperation with the battery monomer, the heat exchange structure and the pipeline joint are arranged along a first direction, the heat exchange structure has a mounting plate facing the pipeline joint, the mounting plate comprises a mounting plate body and a mounting portion, the mounting plate body is arranged around the mounting portion along the circumferential direction of the mounting portion, the mounting portion has a limiting wall, along the first direction, the limiting wall protrudes from the mounting plate body in a direction away from the heat exchange structure, the pipeline joint is installed on the mounting portion and communicates with the heat exchange structure, the pipeline joint is in contact with the limiting wall to limit the pipeline joint and the mounting plate body to be spaced apart. It can save the assembly space in the battery device, can save the assembly space for other components in the battery device, is conducive to improving the space utilization rate in the battery device, and the overall size of the heat exchange structure is reduced, the heat exchange structure is convenient to transport, the transportation cost of the heat exchange structure can be reduced, so that the manufacturing cost of the battery device can be reduced. In addition, after the pipeline joint is connected with the connecting pipeline, the risk of interference between the connecting pipeline and the heat exchange structure is reduced, which is conducive to improving the service life of the connecting pipeline and the heat exchange structure, and further improving the use reliability of the battery device.

[0068] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the vehicle 200 is provided for some embodiments of the application. The vehicle 200 can be a fuel automobile or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid vehicle or a range extended vehicle. The battery device 100 is installed on the chassis of the vehicle 200. The battery device 100 can be used for power supply of the vehicle 200, and the battery device 100 can be used as the operating power supply of the vehicle 200. The vehicle 200 can further include a controller 201 and a motor 202, and the controller 201 is used to control the battery device 100 to supply power to the motor 202, and is used for the working power demand of the vehicle 200 during starting, navigation and driving.

[0069] In some embodiments of the application, the battery device 100 can not only be used as the operating power supply of the vehicle 200, but also be used as the driving power supply of the vehicle 200, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 200.

[0070] The battery device 100 according to the embodiments of the application is described below with reference to Figures 2-8 .

[0071] As Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, the battery device 100 according to the embodiment of the present application comprises: a battery cell 10; a heat exchange structure 20 and a pipe joint 30, the heat exchange structure 20 is in heat exchange cooperation with the battery cell 10, the heat exchange structure 20 and the pipe joint 30 are arranged along a first direction, the heat exchange structure 20 has a mounting plate 21 facing the pipe joint 30, the mounting plate 21 comprises a mounting plate body 211 and a mounting portion 212, the mounting plate body 211 is arranged around the mounting portion 212 along the circumferential direction of the mounting portion 212, the mounting portion 212 has a limiting wall 213, along the first direction, the limiting wall 213 protrudes from the mounting plate body 211 in a direction away from the heat exchange structure 20, the pipe joint 30 is installed on the mounting portion 212 and communicates with the heat exchange structure 20, the pipe joint 30 is in contact with the limiting wall 213 to limit the pipe joint 30 and the mounting plate body 211 to be spaced apart.

[0072] The battery device 100 can further comprise: a box body 50 and at least one battery cell 10, and the present application takes a plurality of battery cells 10 as an example for description. The box body 50 can comprise a first box body 51 and a second box body 52. The first box body 51 and the second box body 52 are buckled to form an installation cavity inside the box body 50, and the installation cavity can accommodate a plurality of battery cells 10, and the plurality of battery cells 10 are installed in the installation cavity. The first box body 51 can be one of an upper box body and a lower box body, the second box body 52 can be the other of the upper box body and the lower box body, and the present application takes the second box body 52 as the lower box body as an example for description.

[0073] The battery device 100 comprises a heat exchange mechanism, which can comprise a heat exchange structure 20 and a pipe joint 30, and the heat exchange structure 20 and the pipe joint 30 can be installed in the installation cavity of the box body 50. Along the height direction of the battery device 100, the heat exchange structure 20 can be located below the battery cell 10, and the heat exchange structure 20 can also be located above the battery cell 10. However, the present application is not limited thereto, and the heat exchange structure 20 can also be located on one side of the battery cell 10, and the present application takes the heat exchange structure 20 located below the battery cell 10 as an example for description. The heat exchange structure 20 is in heat exchange cooperation with the battery cell 10, and the heat exchange structure 20 can be in direct contact with the battery cell 10 for heat exchange, or a heat-conducting adhesive is arranged between the heat exchange structure 20 and the battery cell 10, and the heat exchange structure 20 exchanges heat with the battery cell 10 through the heat-conducting adhesive. The heat exchange structure 20 can form a heat exchange medium flow channel 217 therein, and a heat exchange medium can flow in the heat exchange medium flow channel 217, and the heat exchange medium can be one of a liquid heat exchange medium and a gaseous heat exchange medium, and the present application takes water as an example for description. When the heat exchange medium is in the heat exchange structure 20, the heat exchange medium can exchange heat with the battery cell 10, so that the battery cell 10 maintains an appropriate temperature.

[0074] The heat exchange structure 20 and the pipe joint 30 are arranged along a first direction. As an example, the first direction can be the height direction of the battery device 100, as shown inFigure 2 and Figure 7 As shown, the height direction of the battery device 100 is Figure 2 and Figure 7 As another example, the first direction may be the length direction of the battery device 100, such as Figure 2 As shown, the length direction of the battery device 100 is Figure 2 The first direction can be selected as the height direction of the battery device 100 or the length direction of the battery device 100 according to actual use. This application takes the first direction as the height direction of the battery device 100 as an example for explanation. The pipe joint 30 can be located above the heat exchange structure 20, or the pipe joint 30 can be located below the heat exchange structure 20, such as Figure 7 As shown, this application is described by taking the pipe joint 30 being located above the heat exchange structure 20 as an example.

[0075] The heat exchange structure 20 may include a first heat exchange plate 218 and a second heat exchange plate 219. The first and second heat exchange plates 218, 219 are arranged along a first direction and fixedly connected. A heat exchange medium flow channel 217 is formed between the first and second heat exchange plates 218, 219. The first heat exchange plate 218 is located above the second heat exchange plate 219. One of the first and second heat exchange plates 218, 219 serves as the mounting plate 21. This application uses the first heat exchange plate 218 as the mounting plate 21 as an example. The mounting plate 21 includes a mounting plate body 211 and a mounting portion 212. The mounting plate body 211 is arranged around the mounting portion 212 along the circumference of the mounting portion 212. The mounting portion 212 has a limiting wall 213. Along the first direction, the limiting wall 213 protrudes from the mounting plate body 211 in a direction away from the heat exchange structure 20. The limiting wall 213 is located on the side of the mounting plate body 211 away from the second heat exchange plate 219. The limiting wall 213 can be a flat plate structure and can be parallel to the mounting plate body 211.

[0076] The pipe joint 30 can be inserted into the mounting portion 212, thereby connecting the pipe joint 30 and the heat exchange structure 20. The pipe joint 30 can be formed with a communication flow channel 38. When the pipe joint 30 is installed in the mounting portion 212, the communication flow channel 38 of the pipe joint 30 is connected to the heat exchange medium flow channel 217 of the heat exchange structure 20. When the pipe joint 30 is a medium inlet joint, the heat exchange medium flows into the heat exchange medium flow channel 217 of the heat exchange structure 20 through the pipe joint 30. When the pipe joint 30 is a medium outlet joint, the heat exchange medium in the heat exchange structure 20 flows out through the pipe joint 30.

[0077] like Figure 7As shown, the pipe joint 30 can include an assembly portion 32 and a pipe connecting portion 37, the assembly portion 32 can extend along the first direction, the pipe connecting portion 37 is bent connected with the assembly portion 32, the pipe connecting portion 37 can be perpendicular to the assembly portion 32, and the pipe connecting portion 37 is used to install the connecting pipe, so that the pipe joint 30 is connected with the connecting pipe and the heat exchange structure 20.

[0078] When the pipe joint 30 is installed on the mounting portion 212, part of the structure of the pipe joint 30 is opposite to the limiting wall 213 along the first direction, and part of the structure of the pipe joint 30 is in contact with the limiting wall 213 for limiting, the limiting wall 213 can support the pipe joint 30, so that the pipe connecting portion 37 of the pipe joint 30 and the mounting plate body 211 are spaced apart along the first direction, and after the connecting pipe is installed on the pipe connecting portion 37, the risk of interference between the connecting pipe and the heat exchange structure 20 is reduced, thereby reducing the wear of the connecting pipe and the heat exchange structure 20, which is beneficial to prolong the service life of the connecting pipe and the heat exchange structure 20, and further beneficial to improve the use reliability of the battery device 100.

[0079] In addition, the pipe joint 30 is directly assembled on the mounting portion 212 of the mounting plate 21, compared with the prior art, the battery device 100 of the present application does not set the communication joint, which can reduce the height dimension of the heat exchange mechanism along the first direction, save the assembly space in the battery device 100, save the assembly space for other components in the battery device 100, and is beneficial to improve the space utilization in the battery device 100. At the same time, since the heat exchange mechanism does not set the communication joint, the overall size of the heat exchange structure 20 is reduced, the heat exchange structure 20 is convenient to transport, and the transportation cost of the heat exchange structure 20 is reduced, thereby the manufacturing cost of the battery device 100 is reduced.

[0080] In the above technical solution, by cooperation of the heat exchange structure 20 and the pipe joint 30, the pipe joint 30 is directly assembled on the mounting plate 21, compared with the prior art, the arrangement of the communication joint can be saved, the assembly space in the battery device 100 can be saved, the assembly space for other components in the battery device 100 can be saved, which is beneficial to improve the space utilization in the battery device 100. In addition, since the heat exchange structure 20 does not set the communication joint, the overall size of the heat exchange structure 20 is reduced, the heat exchange structure 20 is convenient to transport, and the transportation cost of the heat exchange structure 20 is reduced, thereby the manufacturing cost of the battery device 100 is reduced. In addition, the pipe joint 30 is in contact with the limiting wall 213 for limiting, so that the pipe joint 30 and the mounting plate body 211 are spaced apart, and after the connecting pipe is installed on the pipe joint 30, the risk of interference between the connecting pipe and the heat exchange structure 20 is reduced, which is beneficial to prolong the service life of the connecting pipe and the heat exchange structure 20, and further beneficial to improve the use reliability of the battery device 100.

[0081] According to some embodiments of the present application, as Figure 4 andFigure 7 As shown, the outer surface of the pipe joint 30 forms a limiting boss 31, and when the pipe joint 30 is installed on the mounting portion 212, the limiting boss 31 is located on the side of the limiting wall 213 away from the heat exchange structure 20 and in contact with the limiting wall 213.

[0082] In the above technical solution, when the pipe joint 30 is installed on the mounting portion 212, the limiting boss 31 is in contact with the limiting wall 213 for limiting, and the limiting wall 213 can support the pipe joint 30, thereby reducing the risk of the pipe joint 30 moving into the heat exchange structure 20 along the first direction, achieving the effect of spacing the pipe connecting portion 37 of the pipe joint 30 and the mounting plate body 211 along the first direction, and achieving the effect of reducing the interference between the connecting pipe and the heat exchange structure 20, thereby achieving the effect of reducing the wear of the connecting pipe and the heat exchange structure 20, which is beneficial to prolong the service life of the connecting pipe and the heat exchange structure 20, and further beneficial to improve the use reliability of the battery device 100.

[0083] In the above technical solution, by arranging the limiting boss 31 around the assembly portion 32 along the circumferential direction of the assembly portion 32, the setting area of the limiting boss 31 can be increased, which is beneficial to increase the contact area between the limiting boss 31 and the limiting wall 213, so that the limiting boss 31 and the limiting wall 213 can be in reliable contact and limiting, and the limiting wall 213 is uniformly stressed, thereby reducing the risk of stress concentration of the limiting wall 213 and the risk of deformation of the limiting wall 213.

[0084] According to some embodiments of the present application, as shown in Figure 3 In the above technical solution, by arranging the limiting boss 31 around the assembly portion 32 along the circumferential direction of the assembly portion 32, the setting area of the limiting boss 31 can be increased, which is beneficial to increase the contact area between the limiting boss 31 and the limiting wall 213, so that the limiting boss 31 and the limiting wall 213 can be in reliable contact and limiting, and the limiting wall 213 is uniformly stressed, thereby reducing the risk of stress concentration of the limiting wall 213 and the risk of deformation of the limiting wall 213.

[0085] In the above technical solution, by arranging the limiting boss 31 around the assembly portion 32 along the circumferential direction of the assembly portion 32, the setting area of the limiting boss 31 can be increased, which is beneficial to increase the contact area between the limiting boss 31 and the limiting wall 213, so that the limiting boss 31 and the limiting wall 213 can be in reliable contact and limiting, and the limiting wall 213 is uniformly stressed, thereby reducing the risk of stress concentration of the limiting wall 213 and the risk of deformation of the limiting wall 213.

[0086] According to some embodiments of the present application, as shown in Figure 7As shown, the mounting portion 212 further has an annular wall 214 extending along the first direction to define a mounting through hole 215, and the pipe joint 30 has a fitting portion 32 fitted into the mounting through hole 215.

[0087] The mounting portion 212 can further have an annular wall 214 extending along the first direction to define a mounting through hole 215, and the pipe joint 30 has a fitting portion 32 fitted into the mounting through hole 215. Figure 7 As shown, the lower end of the annular wall 214 can extend into the heat exchange medium flow channel 217, and the fitting portion 32 can form a communication flow channel 38, which is in communication with the heat exchange medium flow channel 217 when the fitting portion 32 is fitted into the mounting through hole 215.

[0088] In the above technical solution, by arranging the annular wall 214, the annular wall 214 defines the mounting through hole 215 extending along the first direction, and when the fitting portion 32 is fitted into the mounting through hole 215, the annular wall 214 can limit the fitting portion 32 after the fitting portion 32 is in contact with the annular wall 214, thereby reducing the risk of deflection of the fitting portion 32 in the mounting through hole 215. In addition, during the process of inserting the fitting portion 32 into the mounting through hole 215 from the upper end of the mounting through hole 215, the fitting portion 32 is in contact with the annular wall 214, and the annular wall 214 can guide the pipe joint 30, thereby facilitating the fitting of the fitting portion 32 into the mounting through hole 215, and being conducive to improving the assembly efficiency of the pipe joint 30 and the heat exchange structure 20.

[0089] According to some embodiments of the present application, as shown in Figure 3 and Figure 7 The limiting wall 213 is connected with the annular wall 214 and surrounds the annular wall 214 along the circumferential direction of the annular wall 214.

[0090] The limiting wall 213 can be directly connected with the annular wall 214, or indirectly connected with the annular wall 214 through other structures. The limiting wall 213 is directly connected with the annular wall 214 as an example for description. The limiting wall 213 can be integrally formed with the annular wall 214. The limiting wall 213 can be connected between the annular wall 214 and the mounting plate body 211. The limiting wall 213 can have a ring structure. The limiting wall 213 is arranged around the annular wall 214 along the circumferential direction of the annular wall 214. Since the outer peripheral wall of the mounting portion 212 is provided with the limiting boss 31, and the limiting wall 213 is arranged around the annular wall 214 along the circumferential direction of the annular wall 214, the limiting boss 31 is in contact with the limiting wall 213 when the assembly portion 32 is inserted into the mounting hole 215, so that the structure of the mounting portion 212 is reasonable.

[0091] In the above technical solution, the limiting wall 213 is arranged around the annular wall 214 along the circumferential direction of the annular wall 214. When the assembly portion 32 is inserted into the mounting hole 215, the limiting boss 31 is in contact with the limiting wall 213, so that the structure of the mounting portion 212 is reasonable.

[0092] According to some embodiments of the present application, as shown in Figure 7 In the first direction, the annular wall 214 is located inside the limiting wall 213, and the outer end of the annular wall 214 is connected with the limiting wall 213.

[0093] In the first direction, the annular wall 214 is located inside the limiting wall 213, and the outer end of the annular wall 214 is connected with the limiting wall 213. Figure 7 As shown in Figure 7 The outer end of the annular wall 214 is the upper end of the annular wall 214.

[0094] In the above technical solution, in the first direction, the annular wall 214 is located inside the limiting wall 213, which can set the annular wall 214 inside the heat exchange structure 20. Compared with the annular wall 214 exposed outside the heat exchange structure 20, it is beneficial to reduce the volume of the heat exchange structure 20 and reduce the occupied space of the heat exchange structure 20. In addition, the limiting wall 213 is connected with the outer end of the annular wall 214, which facilitates the connection between the limiting wall 213 and the annular wall 214, and makes the connection position of the limiting wall 213 and the annular wall 214 reasonable.

[0095] According to some embodiments of the present application, as shown in Figure 3 and Figure 7As shown, the assembly portion 32 is provided with a clamping structure 33 facing the end of the heat exchange structure 20, and the clamping structure 33 is clamped with the annular wall 214 to limit the relative position of the pipeline joint 30 and the annular wall 214 along the first direction.

[0096] Wherein, along the first direction, the assembly portion 32 is provided with a clamping structure 33 facing the end of the heat exchange structure 20, and the end of the assembly portion 32 facing the heat exchange structure 20 is the lower end of the assembly portion 32, and when the assembly portion 32 is inserted into the mounting hole 215, the clamping structure 33 is clamped with the annular wall 214, which can limit the movement of the pipeline joint 30 relative to the annular wall 214 along the first direction, so that the pipeline joint 30 can be reliably assembled to the mounting portion 212, and the movement of the pipeline joint 30 along the first direction away from the second heat exchange plate 219 can be limited, reducing the risk of separation of the pipeline joint 30 and the mounting portion 212. As an example, the clamping structure 33 includes a clamping boss 35, and the annular wall 214 is formed with a clamping hole, and when the assembly portion 32 is inserted into the mounting hole 215, at least part of the clamping boss 35 is clamped in the clamping hole, so that the clamping structure 33 is clamped with the annular wall 214. However, the clamping manner of the clamping structure 33 and the annular wall 214 can also be other clamping manners, as long as the clamping of the clamping structure 33 and the annular wall 214 is achieved.

[0097] In the above technical solution, by clamping the clamping structure 33 with the annular wall 214, the movement of the pipeline joint 30 relative to the annular wall 214 along the first direction can be limited, so that the pipeline joint 30 can be reliably assembled to the mounting portion 212, and the movement of the pipeline joint 30 along the first direction away from the second heat exchange plate 219 can be limited, reducing the risk of separation of the pipeline joint 30 and the mounting portion 212. In addition, the pipeline joint 30 and the heat exchange structure 20 can be detachably connected, which is convenient for replacing the pipeline joint 30 and is conducive to improving the maintenance efficiency of the battery device 100. Moreover, the clamping of the clamping structure 33 and the annular wall 214 eliminates the welding process of the pipeline joint 30 and the heat exchange structure 20, reduces the risk of leakage of the heat exchange medium due to welding defects of the heat exchange structure 20, and improves the reliability of the product after assembly.

[0098] According to some embodiments of the present application, as shown in Figure 3 and Figure 7 As shown, the clamping structure 33 includes a resilient arm 34 and a clamping boss 35, the resilient arm 34 extends along the first direction, and one end of the resilient arm 34 facing the assembly portion 32 is fixedly connected with the assembly portion 32, and the clamping boss 35 is fixed to the outer peripheral wall of the resilient arm 34, and at least part of the clamping boss 35 and the inner end surface of the annular wall 214 are opposite along the first direction.

[0099] The clamping structure 33 can include an elastic arm 34 and a clamping boss 35. The elastic arm 34 extends along the first direction. The elastic arm 34 can extend linearly along the first direction (the elastic arm 34 is parallel to the first direction), or the elastic arm 34 can extend obliquely along the first direction (the elastic arm 34 forms an angle with the first direction). The end of the elastic arm 34 facing the assembly portion 32 is fixedly connected to the assembly portion 32. As shown in Figure 7 The end of the elastic arm 34 facing the assembly portion 32 is the upper end of the elastic arm 34. The elastic arm 34 can be integrally formed with the assembly portion 32, or the elastic arm 34 can be bonded to the assembly portion 32. However, the application is not limited thereto. The elastic arm 34 can be fixedly connected to the assembly portion 32 by other means, as long as the elastic arm 34 is fixedly connected to the assembly portion 32. The clamping boss 35 is fixed to the outer peripheral wall of the elastic arm 34. The clamping boss 35 can be integrally formed with the elastic arm 34, or the clamping boss 35 can be fixedly bonded to the elastic arm 34. The outer peripheral wall of the elastic arm 34 refers to the wall surface of the elastic arm 34 opposite to the annular wall 214 when the elastic arm 34 is inserted into the mounting hole 215. After the assembly portion 32 of the pipeline joint 30 is assembled in place in the mounting hole 215, at least part of the clamping boss 35 and the inner end surface of the annular wall 214 are arranged opposite to each other along the first direction. At least part of the clamping boss 35 is located inside the inner end surface of the annular wall 214.

[0100] Specifically, as shown in Figure 7 During assembly of the pipeline joint 30 to the mounting portion 212, the clamping structure 33 deforms radially inwardly of the mounting portion 212. The assembly portion 32 of the pipeline joint 30 and the clamping structure 33 are inserted downwardly from the upper end of the mounting hole 215 into the mounting hole 215. During insertion of the pipeline joint 30, the clamping boss 35 abuts against the limiting wall 213. When the assembly portion 32 of the pipeline joint 30 is inserted in place, the clamping boss 35 moves out of the mounting hole 215. The elastic arm 34 returns to its original shape, so that at least part of the clamping boss 35 moves below the inner end surface of the annular wall 214. When the limiting boss 31 contacts the inner end surface of the limiting wall 213, the limiting boss 31 and the limiting wall 213 are clamped, thereby reducing the risk of the pipeline joint 30 moving out of the mounting hole 215 along the first direction, so that the pipeline joint 30 can be reliably assembled to the mounting portion 212. When it is necessary to disassemble the pipeline joint 30 from the heat exchange structure 20, the elastic arm 34 deforms radially inwardly of the mounting portion 212, so that the clamping boss 35 and the inner end surface of the annular wall 214 are staggered along the first direction. Thus, the pipeline joint 30 can be pulled out of the mounting hole 215, thereby achieving the effect of disassembling the pipeline joint 30.

[0101] In the technical scheme, the elastic arm 34 and the clamping boss 35 are arranged, when the limiting boss 31 and the inner end surface of the limiting wall 213 are in contact, the limiting boss 31 and the limiting wall 213 are clamped, thereby reducing the risk of the pipeline joint 30 moving out of the mounting hole 215 along the first direction, and the pipeline joint 30 is reliably assembled to the mounting portion 212, and the effect that the pipeline joint 30 is detachably mounted to the heat exchange structure 20 is achieved.

[0102] According to some embodiments of the present application, as shown in Figure 3 and Figure 7 , the end portion of the assembly portion 32 facing the heat exchange structure 20 can be provided with a plurality of clamping structures 33, the number of clamping structures 33 can be two, three, four, five, etc., and the plurality of clamping structures 33 can be arranged in sequence along the circumference of the assembly portion 32. By simultaneously clamping the annular wall 214 with the plurality of clamping structures 33, the pipeline joint 30 can be more reliably assembled to the mounting portion 212, further reducing the risk of the pipeline joint 30 separating from the mounting portion 212, and also facilitating the improvement of the overall structural strength of the pipeline joint 30 and the heat exchange structure 20.

[0103] According to some embodiments of the present application, as shown in Figure 3 and Figure 7 , along the first direction, the end surface of the clamping boss 35 facing the annular wall 214 is a clamping inclined surface 36, and the clamping inclined surface 36 is inclined away from the assembly portion 32 from the elastic arm 34 to the clamping boss 35.

[0104] In the technical scheme, by setting the end surface of the clamping boss 35 facing the annular wall 214 as the clamping inclined surface 36, when the assembly portion 32 of the pipeline joint 30 is inserted in place, at least part of the clamping boss 35 is moved to below the annular wall 214, which can make the pipeline joint 30 and the heat exchange structure 20 fit tightly, can reduce the shaking of the pipeline joint 30, and also facilitate the absorption of the assembly error of the pipeline joint 30 along the first direction.

[0105] In the technical scheme, by setting the end surface of the clamping boss 35 facing the annular wall 214 as the clamping inclined surface 36, when the assembly portion 32 of the pipeline joint 30 is inserted in place, at least part of the clamping boss 35 is moved to below the annular wall 214, which can make the pipeline joint 30 and the heat exchange structure 20 fit tightly, can reduce the shaking of the pipeline joint 30, and also facilitate the absorption of the assembly error of the pipeline joint 30 along the first direction.

[0106] According to some embodiments of the present application, as shown in Figure 3 and Figure 7 , the angle between the clamping inclined surface 36 and the second direction is greater than or equal to 5° and less than or equal to 15°, and the first direction and the second direction are perpendicular.

[0107] An included angle between the clamping inclined surface 36 and the second direction satisfies a relationship: 5°≤β≤15°. The included angle between the clamping inclined surface 36 and the second direction can be 5°, 6°, 7°, 8°, 8.5°, 10°, 12°, 15°, etc. When the first direction is the height direction of the battery device 100, the second direction can be the horizontal direction.

[0108] In the above technical solution, by setting the included angle between the clamping inclined surface 36 and the second direction to be greater than or equal to 5° and less than or equal to 15°, when the assembly part 32 of the pipeline joint 30 is inserted into place, it is more conducive to moving at least part of the clamping boss 35 below the annular wall 214, facilitating the abutment of the clamping inclined surface 36 and the annular wall 214, enabling the assembly of the pipeline joint 30 and the heat exchange structure 20 to be more compact, further reducing the shaking of the pipeline joint 30, and more conducive to absorbing the assembly error of the pipeline joint 30 along the first direction.

[0109] According to some embodiments of the present application, as shown in Figure 3 and Figure 7 The battery device 100 further includes a sealing ring 40, the sealing ring 40 is sleeved on the assembly part 32 and located in the mounting through hole 215, and the sealing ring 40 is used to seal the gap between the assembly part 32 and the annular wall 214.

[0110] The battery device 100 further includes a sealing ring 40, which can be a rubber ring, and the sealing ring 40 can also be a plastic ring. The material of the sealing ring 40 is not limited in particular as long as it can seal. The sealing ring 40 is sleeved on the outer peripheral wall of the assembly part 32 and located in the mounting through hole 215. The sealing ring 40 can abut against the annular wall 214, so that the sealing ring 40 can seal the gap between the assembly part 32 and the annular wall 214. As an example, at least one of the outer peripheral wall of the assembly part 32 and the inner peripheral wall of the annular wall 214 is formed with a groove for mounting the sealing ring 40. The part of the sealing ring 40 mounted in the groove can be limited by the groove, which reduces the risk of movement of the sealing ring 40 between the assembly part 32 and the annular wall 214, and is conducive to improving the sealing between the assembly part 32 and the annular wall 214.

[0111] In the above technical solution, by setting the sealing ring 40, the sealing ring 40 can seal the gap between the assembly part 32 and the annular wall 214, which is conducive to improving the sealing between the assembly part 32 and the annular wall 214 and reducing the risk of leakage of the heat exchange medium in the heat exchange structure 20 from the gap between the assembly part 32 and the annular wall 214.

[0112] According to some embodiments of the present application, as shown in Figure 3 and Figure 7As shown, the mounting portion 212 further has a support wall 216 connected between the limiting wall 213 and the mounting plate body 211, the support wall 216 protrudes from the mounting plate body 211 in the first direction away from the heat exchange structure 20, so that the limiting wall 213 protrudes from the mounting plate body 211.

[0113] In the above technical solution, the support wall 216 is connected between the limiting wall 213 and the mounting plate body 211, and the support wall 216 protrudes from the mounting plate body 211 in the first direction away from the heat exchange structure 20, so that the limiting wall 213 is located on the side of the mounting plate body 211 away from the second heat exchange plate 219, achieving the effect that the limiting wall 213 protrudes from the mounting plate body 211 in the direction away from the heat exchange structure 20, and the limiting wall 213 and the mounting plate body 211 have a height difference in the first direction.

[0114] In the above technical solution, the support wall 216 is connected between the limiting wall 213 and the mounting plate body 211, and the support wall 216 protrudes from the mounting plate body 211 in the first direction away from the heat exchange structure 20, so that the limiting wall 213 is located on the side of the mounting plate body 211 away from the second heat exchange plate 219, achieving the effect that the limiting wall 213 protrudes from the mounting plate body 211 in the direction away from the heat exchange structure 20, and the limiting wall 213 and the mounting plate body 211 have a height difference in the first direction.

[0115] According to some embodiments of the present application, the mounting portion 212 can be an integrally formed piece, and the mounting plate body 211 and the mounting portion 212 can be an integrally formed piece. The first heat exchange plate 218 can be formed into the mounting plate body 211 and the mounting portion 212 by punching and drawing holes.

[0116] According to some embodiments of the present application, the distance between the upper end of the elastic arm 34 and the root position of the clamping boss 35 in the first direction can be H1, satisfying the relationship: 1mm≤H1≤3mm, and H1 can be 1mm, 2mm, 3mm, etc. Therefore, the structural strength of the clamping structure 33 can be improved, and the risk of fracture of the clamping structure 33 can be reduced.

[0117] According to some embodiments of the present application, the width dimension of the elastic arm 34 can be D1, satisfying the relationship: 3mm≤D1≤8mm, and D1 can be 3mm, 4mm, 5mm, 7mm, 8mm, etc. The width dimension of the elastic arm 34 can be reasonably selected according to the length dimension of the elastic arm 34 in the first direction. By combining H1 and D1, the structural strength of the clamping structure 33 can be further improved, and the risk of fracture of the clamping structure 33 can be further reduced.

[0118] According to some embodiments of the present application, the spacing distance between the upper surface of the limiting wall 213 and the upper surface of the mounting plate body 211 along the first direction can be H2, satisfying the relationship: 2mm≤H2≤5mm, H2 can be a value such as 2mm, 3mm, 4mm, 5mm, etc. On the basis of maintaining a reasonable size of the heat exchange structure 20 along the first direction, after the pipe connector 30 is installed with the connecting pipe, the risk of interference between the connecting pipe and the heat exchange structure 20 is further reduced.

[0119] According to some embodiments of the present application, the height dimension of the annular wall 214 along the first direction is H3, satisfying the relationship: 4mm≤H3≤8mm, and H3 can be a value such as 4mm, 5mm, 6mm, 8mm, so that the annular wall 214 can reliably limit the pipe connector 30 and more reliably assemble the pipe connector 30 on the mounting plate 21.

[0120] like Figure 1 As shown, the electrical device according to the embodiment of the present application includes the battery device 100 of the above embodiment. Compared with the prior art, the transportation cost of the heat exchange structure 20 can be reduced, thereby reducing the manufacturing cost of the battery device 100 and the electrical device, which is conducive to improving the reliability of the electrical device.

[0121] According to some embodiments of the present application, see Figure 3 and Figure 7As shown, the battery device 100 provided by the present application comprises a battery cell 10, a heat exchange structure 20 and a pipe joint 30. The heat exchange structure 20 is in heat exchange cooperation with the battery cell 10. The heat exchange structure 20 and the pipe joint 30 are arranged along a first direction. The heat exchange structure 20 has a mounting plate 21 facing the pipe joint 30. The mounting plate 21 comprises a mounting plate body 211 and a mounting portion 212. The mounting plate body 211 is arranged around the mounting portion 212 along a circumferential direction of the mounting portion 212. The mounting portion 212 has a limiting wall 213, an annular wall 214 and a supporting wall 216. The limiting wall 213 is connected between the annular wall 214 and the supporting wall 216. The supporting wall 216 is connected between the limiting wall 213 and the mounting plate body 211 in an inclined manner. Along the first direction, the limiting wall 213 protrudes from the mounting plate body 211 in a direction away from the heat exchange structure 20. The pipe joint 30 is installed on the mounting portion 212 and communicates with the heat exchange structure 20. The pipe joint 30 is in contact with the limiting wall 213 to limit the pipe joint 30 and the mounting plate body 211 to be spaced apart. An outer surface of the pipe joint 30 forms a limiting boss 31. When the pipe joint 30 is installed on the mounting portion 212, the limiting boss 31 is located on a side of the limiting wall 213 away from the heat exchange structure 20 and is in contact with the limiting wall 213 to limit the pipe joint 30. The annular wall 214 extends along the first direction to define a mounting through hole 215. The pipe joint 30 has an assembly portion 32. The assembly portion 32 is assembled in the mounting through hole 215. Along the first direction, the annular wall 214 is located inside the limiting wall 213. An outer end of the annular wall 214 is connected with the limiting wall 213. The annular wall 214 is located inside the heat exchange structure 20. An end of the assembly portion 32 facing the heat exchange structure 20 is provided with a clamping structure 33. The clamping structure 33 is in clamping cooperation with the annular wall 214. The clamping structure 33 comprises an elastic arm 34 and a clamping boss 35. The elastic arm 34 extends along the first direction. An end of the elastic arm 34 facing the assembly portion 32 is fixedly connected with the assembly portion 32. The clamping boss 35 is fixed to an outer circumferential wall of the elastic arm 34. At least a part of the clamping boss 35 and an inner end surface of the annular wall 214 are opposite along the first direction. Along the first direction, an end surface of the clamping boss 35 facing the annular wall 214 is a clamping inclined surface 36. From the elastic arm 34 to the clamping boss 35, the clamping inclined surface 36 is inclined away from the assembly portion 32. The supporting wall 216 protrudes from the mounting plate body 211 in a direction away from the heat exchange structure 20 along the first direction.

[0122] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict.

[0123] Other configurations of the battery device 100 according to the embodiments of the present application, such as electrical elements and explosion-proof valves, and operations are known to those skilled in the art and will not be described in detail here.

[0124] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0125] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A battery device, characterized in that: include: Battery cells; A heat exchange structure and a pipe joint, the heat exchange structure cooperates with the battery cell for heat exchange, the heat exchange structure and the pipe joint are arranged along a first direction, the heat exchange structure has a mounting plate facing the pipe joint, the mounting plate includes a mounting plate body and a mounting portion, the mounting plate body is arranged around the mounting portion along the circumference of the mounting portion, the mounting portion has a limiting wall, along the first direction, the limiting wall protrudes from the mounting plate body in the direction away from the heat exchange structure, the pipe joint is installed on the mounting portion and is connected to the heat exchange structure, the pipe joint contacts and limits the limiting wall to separate the pipe joint and the mounting plate body.

2. The battery device according to claim 1, wherein: A limiting boss is formed on the outer surface of the pipe joint. When the pipe joint is installed on the mounting portion, the limiting boss is located on a side of the limiting wall away from the heat exchange structure and contacts the limiting wall for limiting position.

3. The battery device according to claim 1, wherein: The mounting portion further has an annular wall extending along the first direction to define a mounting through hole. The pipe joint has an assembly portion assembled in the mounting through hole.

4. The battery device according to claim 3, characterized in that The limiting wall is connected to the annular wall, and the limiting wall is arranged around the annular wall along the circumference of the annular wall.

5. The battery device according to claim 4, characterized in that Along the first direction, the annular wall is located inside the limiting wall, and the outer end of the annular wall is connected to the limiting wall.

6. The battery device according to claim 3, characterized in that A clamping structure is provided at the end of the assembly portion facing the heat exchange structure, and the clamping structure is clamped and matched with the annular wall to limit the relative position of the pipe joint and the annular wall along the first direction.

7. The battery device according to claim 6, characterized in that The clamping structure includes an elastic arm and a clamping boss, the elastic arm extends along the first direction, and one end of the elastic arm facing the assembly part is fixedly connected to the assembly part, the clamping boss is fixed to the outer peripheral wall of the elastic arm, and at least a portion of the clamping boss is opposite to the inner end surface of the annular wall along the first direction.

8. The battery device according to claim 7, characterized in that Along the first direction, the end surface of the clamping boss facing the annular wall is a clamping inclined surface, and from the elastic arm to the clamping boss, the clamping inclined surface is inclined toward a direction away from the assembly portion.

9. The battery device according to claim 8, characterized in that An included angle between the engaging inclined surface and the second direction is greater than or equal to 5° and less than or equal to 15°, and the first direction is perpendicular to the second direction.

10. The battery device according to any one of claims 3 to 9, characterized in that: The battery device further includes a sealing ring, which is sleeved on the assembly portion and located in the mounting through hole, and is used to seal the gap between the assembly portion and the annular wall.

11. The battery device according to any one of claims 1 to 9, characterized in that: The mounting portion further has a support wall connected between the limiting wall and the mounting plate body, and the support wall protrudes from the mounting plate body along the first direction away from the heat exchange structure so that the limiting wall protrudes from the mounting plate body.

12. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1-11.

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