Current collecting structure, temperature regulating assembly and battery pack

Abstract

The application provides a current collecting structure, a temperature adjusting assembly and a battery pack. The current collecting structure comprises a current collector, a first connector and a second connector. The current collector comprises a first plate body and a second plate body arranged oppositely. The first plate body and the second plate body are sealingly connected and form a current collecting cavity. The first connector is arranged on a side of the first plate body away from the second plate body. The first connector comprises a first through hole communicating with the current collecting cavity. The second connector is arranged on a side of the second plate body away from the first plate body. The second connector comprises a second through hole communicating with the current collecting cavity. The first connector is used for connecting the second connector of another current collecting structure, so that the second through hole communicates with the first through hole of the other current collecting structure. By sealingly connecting the first plate body and the second plate body of the current collector, the production and manufacturing of the current collector can be more convenient, the production and manufacturing cost of the current collector can be reduced, and the cost of the current collecting structure can be reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a current collector structure, a temperature regulation component, and a battery pack. Background Technology

[0002] In related technologies, battery packs typically include multiple rows of cells and a temperature regulation assembly. The temperature regulation assembly includes a temperature regulation plate disposed between two adjacent rows of cells, and a current collector structure connected to the temperature regulation plate. Adjacent temperature regulation plates are connected through the current collector structure so that the temperature regulation medium can be distributed to different temperature regulation plates through the current collector structure, and the cells of the battery pack can be cooled or heated through the temperature regulation plates.

[0003] However, the current collector used to connect to the temperature control plate is usually a single piece, which has a high production cost, thus increasing the production cost of the current collector structure. Utility Model Content

[0004] Embodiments of this application provide a current collector structure, a temperature regulation component, and a battery pack, which can improve the technical problem of high production cost of current collectors in current collector structures.

[0005] In a first aspect, embodiments of this application provide a flow collection structure, including: The current collector includes a first plate and a second plate disposed opposite to each other, the first plate and the second plate being sealed together and forming a current collection cavity; A first connector is located on the side of the first plate away from the second plate, and the first connector includes a first through hole communicating with the collection cavity; The second connector is located on the side of the second plate away from the first plate. The second connector includes a second through hole communicating with the collection cavity. The first connector is used to connect with the second connector of another collection structure so that the second through hole communicates with the first through hole of another collection structure.

[0006] In one embodiment, the first plate and the second plate are bonded or welded to create a sealed connection between them; or, A sealing element is provided between the first plate and the second plate. The first plate and the second plate are connected to each other and clamp the sealing element to seal the first plate and the second plate. This makes the sealing connection between the first plate and the second plate simpler and more convenient.

[0007] In one embodiment, a connecting structure is provided on the side of the first plate away from the second plate. The first connector includes a connecting portion, which is movably connected to the connecting structure. A sealing ring is provided between the first connector and the first plate, surrounding the first through hole. The first connector and the first plate clamp the sealing ring to form a sealed protective structure. By allowing the first connector to move relative to the current collector and providing a sealing ring between the first connector and the first plate to form a sealed protective structure, the position of the first connector relative to the current collector is adjustable, while the temperature regulating medium in the current collector cavity and the first through hole will not leak out from the gap between the first connector and the first plate. When connecting the first connector to the second connector of another current collector structure, and making the second through hole communicate with the first through hole of another current collector structure, the position of the first connector can be adaptively adjusted according to the relative position of the first connector and the second connector of another current collector, so that the first connector can be accurately connected to the second connector of another current collector. This reduces the assembly accuracy requirements of the first connector and the second connector of another current collector, which is beneficial to reducing the cost of the battery pack and improving the assembly efficiency of the battery pack.

[0008] In one embodiment, the first connector can move radially relative to the connecting structure in the first through hole. When connecting the first connector to the second connector of another current collector structure, so that the second through hole is connected to the first through hole of the other current collector structure, if the first connector and the second connector of the other current collector structure are misaligned radially in the first through hole, the first connector can be moved a certain distance radially relative to the connecting structure in the first through hole to align the first connector with the second connector of the other current collector structure, so that the first connector and the second connector of the other current collector structure can be quickly and accurately connected together; and / or, The first connector can swing radially relative to the connecting structure in the first through hole. When connecting the first connector to the second connector of another current collector structure, so that the second through hole is connected to the first through hole of the other current collector structure, if the first connector and the second connector of the other current collector structure are tilted at a certain angle in the radial direction of the first through hole, the first connector can swing at a certain angle relative to the connecting structure in the radial direction of the first through hole, thereby aligning the first connector with the second connector of the other current collector structure, so that the first connector and the second connector of the other current collector structure can be quickly and accurately connected together; and / or, The first connector can move axially relative to the connecting structure in the first through hole. When the first connector is connected to the second connector of another current collector structure, so that the second through hole is connected to the first through hole of another current collector structure, if the distance between the first connector and the second connector of another current collector structure in the first through hole is far, the first connector can be moved a certain distance axially relative to the connecting structure in the first through hole, so that the first connector and the second connector of another current collector structure can be connected together quickly and accurately.

[0009] In one embodiment, the connecting structure includes a limiting member connected to the first plate. The limiting member is located on the side of the connecting portion opposite to the first plate and is used to abut against the side of the connecting portion opposite to the first plate, so that the connecting portion and the first plate clamp the sealing ring. Thus, a thrust can be applied to the connecting portion by the limiting member, causing the connecting portion to clamp the sealing ring with the first plate. Furthermore, the connecting portion can also move and swing radially relative to the connecting structure in the first through hole of the first connector, and can also move a certain distance axially along the first through hole, so that the first connector can move and swing radially relative to the connecting structure in the first through hole, and can also move axially along the first through hole.

[0010] In one embodiment, the connection structure further includes a connecting protrusion protruding from the side of the first plate away from the second plate. The connecting protrusion forms a groove, and the bottom surface of the groove has an interface communicating with the collection cavity. The connecting part is at least partially accommodated in the groove. The first through hole communicates with the interface. The limiting member is connected to the connecting protrusion to make the connection between the limiting member and the first plate more convenient. The limiting member can be located on the side of the connecting part of the first connector away from the first plate to stably limit the connecting part.

[0011] In one embodiment, the limiting member is welded or bonded to the connecting protrusion to increase the connection strength between the limiting member and the connecting protrusion and to simplify the structure.

[0012] In one embodiment, the limiting member is disposed around the first connector; the limiting member has a clearance hole for the first connector to pass through; the first connector includes a mating section located within the clearance hole, the inner diameter of the clearance hole being larger than the outer diameter of the mating section. This allows the limiting member to have a larger contact area with the surface of the connecting portion opposite to the collector, resulting in a more stable contact between the limiting member and the first connector. Furthermore, the clearance hole provides space for the mating section to move and swing radially within the first through hole, allowing the first connector to move and swing radially relative to the connecting structure within the first through hole.

[0013] In one embodiment, the outer diameter of the connecting portion is larger than the inner diameter of the clearance hole. This allows the limiting member to more stably abut against the side of the connecting portion away from the collector, preventing the connecting portion from dislodging from the clearance hole.

[0014] In one embodiment, the connecting portion is located at the end of the first connector near the first plate, and the first through hole penetrates the connecting portion; the sealing ring is located between the connecting portion and the first plate, and the connecting portion and the first plate clamp the sealing ring. By clamping the sealing ring between the connecting portion and the first plate, the gap between the first connector and the first plate can be effectively sealed.

[0015] In one embodiment, a receiving groove is formed on the side of the connecting portion facing the first plate. The receiving groove surrounds the first through hole, and a portion of the sealing ring is accommodated within the receiving groove. Therefore, the receiving groove can provide a certain positioning effect for the sealing ring, making the position of the sealing ring relative to the connecting portion more stable, which is beneficial to improving the sealing stability of the sealing ring.

[0016] In one embodiment, the connecting portion has a through hole extending along the length direction of the first through hole, the through hole communicating with the receiving groove, and a connecting section provided within the through hole, the connecting section being connected to the sealing ring. This makes the connection between the sealing ring and the connecting portion more stable, and the sealing ring less likely to detach from the connecting portion.

[0017] In one embodiment, the compression ratio of the sealing ring is greater than or equal to 8% and less than or equal to 42%, which enables the sealing ring to have a high sealing effect and sealing stability.

[0018] In one embodiment, the compression ratio of the sealing ring is greater than or equal to 15% and less than or equal to 30% to improve the sealing effect and extend the sealing time.

[0019] In one embodiment, the first plate body has at least two latching portions protruding from the side opposite to the second plate body, the at least two latching portions being arranged circumferentially along the first connector; the at least two latching portions are used to latch with the second connector of another current collection structure. This makes the connection between the first connector and the second connector of another current collection structure more stable.

[0020] In one embodiment, the outer peripheral surface of the second connector has a flange protruding, and the snap-fit ​​portion includes an abutment portion. When the first connector is connected to the second connector of another current-collecting structure, the abutment portion is located on the side of the flange away from the first plate, so that the at least two snap-fit ​​portions snap into the second connector of the other current-collecting structure. By abutting the abutment portion against the flange of the second connector of the other current-collecting structure, the movement of the second connector of the other current-collecting structure away from the corresponding first connector can be restricted, making the connection between the first connector and the second connector of the other current-collecting structure more stable. Moreover, when the abutment portion and the corresponding flange are spaced apart axially in the first through hole, the relative positions of the first connector and the second connector of the other current-collecting structure axially in the first through hole can be adjusted to reduce assembly accuracy requirements.

[0021] In one embodiment, the maximum distance between the abutment portion of the flow collection structure and the flange of the other flow collection structure in the axial direction of the first through hole is less than or equal to 2 mm, so that the first connector of the flow collection structure and the second connector of the other flow collection structure have a larger adjustment space in the axial direction of the first through hole, and the assembly accuracy requirement is lower when the first connector of the flow collection structure and the second connector of the other flow collection structure are connected.

[0022] Secondly, embodiments of this application provide a temperature regulating component, including: A temperature regulating plate, wherein a flow channel is provided inside the temperature regulating plate; A flow collection structure, as described above, includes a flow collector, a first connector, and a second connector. The flow collector includes a first plate and a second plate disposed opposite to each other, the first plate and the second plate being sealed together and forming a flow collection cavity. One end of the temperature regulating plate is connected to the flow collector of the flow collection structure to allow the flow channel to communicate with the flow collection cavity. The first connector is located on the side of the first plate away from the second plate and includes a first through hole communicating with the flow collection cavity. The second connector is located on the side of the second plate away from the first plate and includes a second through hole communicating with the flow collection cavity. The first connector is used to connect to the second connector of another flow collection structure so that the second through hole communicates with the first through hole of the other flow collection structure.

[0023] Thirdly, embodiments of this application provide a battery pack, comprising: Battery cell assembly, including multiple rows of battery cells; A temperature regulating component, wherein the temperature regulating component is as described above, and the temperature regulating plate of the temperature regulating component is disposed between two adjacent rows of cells.

[0024] The beneficial effects of the embodiments of this application are as follows: The flow collection structure provided in this application includes a first plate and a second plate disposed opposite to each other, forming a flow collection cavity. A first connector is provided on the side of the first plate away from the second plate, and a second connector is provided on the side of the second plate away from the first plate. The first through hole of the first connector and the second through hole of the second connector are respectively connected to the flow collection cavity. The first connector of the flow collection structure is used to connect to the second connector of another flow collection structure, so that the second through hole is connected to the first through hole of the other flow collection structure, thereby connecting the flow collection cavities of the flow collection bodies of the two flow collection structures. When the flow collection body of the flow collection structure is connected to one end of the corresponding temperature regulating plate, so that the flow collection cavity of the flow collection body is connected to the flow channel of the corresponding temperature regulating plate, the flow collection structure can provide a temperature regulating medium to the flow channel of the temperature regulating plate, or allow the temperature regulating medium in the flow channel of the temperature regulating plate to flow into the flow collection structure.

[0025] Based on this, compared to the related technologies that set the current collector as an integral structure, by sealing the first plate and the second plate of the current collector together, the current collector can be produced and manufactured as separate first and second plates, and then sealed together to form the current collector. This makes the production and manufacturing of the current collector more convenient, helps to reduce the production and manufacturing cost of the current collector, and thus reduces the cost of the current collector structure. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of one embodiment of the battery pack provided in this application. Figure 2 A schematic diagram of the mating structure of the battery cell and temperature regulation component provided in an embodiment of this application; Figure 3 A schematic diagram of one embodiment of the flow collection structure provided in this application; Figure 4 An exploded view of one embodiment of the flow collection structure provided in this application; Figure 5 for Figure 3 A cross-sectional view along the AA direction; Figure 6 A schematic diagram of the structure when the first connector of the current collection structure provided in the embodiment of this application is connected to the second connector of another current collection structure; Figure 7 This is a schematic diagram of one embodiment of the first connector and sealing ring provided in this application.

[0028] Explanation of reference numerals in the attached figures: 1-Battery pack; 10-Temperature regulation component; 11-Current collector structure; 110-Current collector; 1110-Current collector cavity; 111-First plate; 1112-Connecting structure; 1113-Limiting member; 1114-Allowing hole; 1115-Connecting protrusion; 1116-Groove; 1117-Snap-fit ​​part; 1118-Abutting part; 1119-Interface; 112-Second plate; 113-First connector; 131-First through hole; 1132-Connecting part; 1133-Receiving groove; 1134-Through hole; 1136-Matching section; 115-Second connector; 1151-Flange; 1152-Second through hole; 1141-Sealing ring; 1142-Annular seal; 1143-Connecting section; 12-Temperature regulating plate; 121-Flow channel; 2-Cell assembly; 20-Cell; 30-Box; H-Maximum distance. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0030] This application provides a current collector structure, a temperature regulation component, and a battery pack. These will be described in detail below.

[0031] Figure 1 This is a schematic diagram of the structure of one embodiment of the battery pack provided in this application. Figure 2 This is a schematic diagram illustrating the mating structure of the battery cell and temperature regulation assembly provided in an embodiment of this application. Figure 1 and Figure 2 As shown, the battery pack 1 includes a cell assembly 2 and a temperature regulation assembly 10. The cell assembly 2 includes multiple cells 20. The temperature regulation assembly 10 exchanges heat with the outer peripheral surface of the cells 20 to regulate the temperature of the multiple cells 20 so that the multiple cells 20 are at a suitable operating temperature.

[0032] It should be noted that the temperature regulation component 10 can heat or cool multiple battery cells 20, depending on the ambient temperature of the internal thermometer of the battery pack 1.

[0033] The battery cell assembly 2 may include multiple rows of battery cells 20. The temperature regulation assembly 10 includes a temperature regulation plate 12 and a current collector structure 11. The temperature regulation plate 12 has a flow channel 121. The current collector structure 11 is connected to the temperature regulation plate 12. Two adjacent temperature regulation assemblies 10 are connected through the current collector structure 11, so that the temperature regulation medium can be distributed through the current collector structure 11 to the flow channels 121 of different temperature regulation plates 12, and heat exchange can be performed on the battery cells 20 of the battery pack 1 through the temperature regulation plate 12 to cool or heat the battery cells 20. The temperature regulation medium can be coolant, refrigerant, etc., and is not limited here.

[0034] Specifically, the battery pack 1 includes a housing 30, a cell assembly 2, and a temperature regulation assembly 10 disposed within the housing 30. The temperature regulation assembly 10 is located between two adjacent rows of cells 20 in the cell assembly 2. The temperature regulation plate 12 of the temperature regulation assembly 10 is located between two adjacent rows of cells 20. The temperature regulation plate 12 is in direct contact with the outer peripheral surface of the two adjacent rows of cells 20, or through a heat-conducting layer. After the temperature regulation medium flows into the flow channel 121 of the temperature regulation plate 12 via the current collector 11, the temperature regulation medium exchanges heat with the cells 20 through the temperature regulation plate 12 to cool or heat the cells 20.

[0035] In order to reduce the production cost of the current collection structure 11, this application embodiment provides a current collection structure 11.

[0036] like Figure 3 and Figure 6 As shown, the flow collection structure 11 includes a flow collector 110, a first connector 113, and a second connector 115. The first connector 113 and the second connector 115 are located on both sides of the flow collector 110. A flow collection cavity 1110 is formed inside the flow collector 110. The first connector 113 includes a first through hole 1131 communicating with the flow collection cavity 1110. The second connector 115 includes a second through hole 1152 communicating with the flow collection cavity 1110. One end of the temperature regulating plate 12 is connected to the flow collector 110 to connect the flow channel 121 in the temperature regulating plate 12 with the flow collection cavity 1110 of the flow collector 110, so that the temperature regulating medium in the flow collection cavity 1110 of the flow collector 110 can flow into the flow channel 121 of the temperature regulating plate 12, or allow the temperature regulating medium in the flow channel 121 of the temperature regulating plate 12 to flow into the flow collection cavity 1110 of the flow collector 110.

[0037] The first connector 113 of the current collection structure 11 is used to connect with the second connector 115 of another current collection structure 11, so that the second through hole 1152 is connected to the first through hole 1131 of the other current collection structure 11, so that the current collection chambers 1110 of the current collection fluids 110 of the two interconnected current collection structures 11 are connected, and so that the two temperature regulating components 10 are connected in parallel or in series through the current collection structures 11.

[0038] In some embodiments, the current collection chamber 110 of the current collection structure 11 may include a first plate 111 and a second plate 112 disposed opposite to each other, the first plate 111 and the second plate 112 being sealed together and forming a current collection cavity 1110. A first connector 113 is disposed on the side of the first plate 111 opposite to the second plate 112, and the first connector 113 includes a first through hole 1131 communicating with the current collection cavity 1110. A second connector 115 is disposed on the side of the second plate 112 opposite to the first plate 111, and the second connector 115 includes a second through hole 1152 communicating with the current collection cavity 1110. The first connector 113 is used to connect with the second connector 115 of another current collection structure 11, so that the second through hole 1152 communicates with the first through hole 1131 of the other current collection structure 11.

[0039] The flow collection structure 11 provided in this application embodiment includes a first plate 111 and a second plate 112 disposed opposite to each other, forming a flow collection cavity 1110. A first connector 113 is provided on the side of the first plate 111 away from the second plate 112, and a second connector 115 is provided on the side of the second plate 112 away from the first plate 111. The first through hole 1131 of the first connector 113 and the second through hole 1152 of the second connector 115 are respectively connected to the flow collection cavity 1110. The first connector 113 of the flow collection structure 11 is used to connect with the second connector 115 of another flow collection structure 11, so that the second through hole 1152 is connected to the first through hole 1131 of the other flow collection structure 11, thereby connecting the flow collection cavities 1110 of the flow collection cavities 1110 of the flow collection cavities 1110 of the two flow collection structures 11. When the current collector 110 of the current collector structure 11 is connected to one end of the corresponding temperature regulating plate 12, so that the current collector cavity 1110 of the current collector 110 is connected to the flow channel 121 of the corresponding temperature regulating plate 12, the current collector structure 11 can provide a temperature regulating medium to the flow channel 121 of the temperature regulating plate 12, or the temperature regulating medium in the flow channel 121 of the temperature regulating plate 12 can flow into the current collector structure 11.

[0040] Based on this, compared to the related technologies where the current collector 110 is set as an integral structure, by sealing the first plate 111 and the second plate 112 of the current collector 110 together, the current collector 110 can be produced and manufactured by dividing the first plate 111 and the second plate 112 into independent parts, and then sealing the first plate 111 and the second plate 112 together to form the current collector 110. This makes the production and manufacturing of the current collector 110 more convenient, helps to reduce the production and manufacturing cost of the current collector 110, and thus reduces the cost of the current collection structure 11. In some embodiments, the first plate 111 and the second plate 112 may be bonded or welded together to make the first plate 111 and the second plate 112 sealed together, thereby making the sealed connection of the first plate 111 and the second plate 112 more stable and convenient.

[0041] In other embodiments, a sealing element may be provided between the first plate 111 and the second plate 112, with the first plate 111 and the second plate 112 connected to each other and clamping the sealing element, so that the first plate 111 and the second plate 112 are sealed together. This can also make the sealed connection between the first plate 111 and the second plate 112 relatively stable and convenient to a certain extent.

[0042] The first plate 111 and the second plate 112 can be connected by bolts, snap-fit ​​connections, or other means. The seal can be annular or other shapes, which are not limited here.

[0043] In some embodiments, the first connector 113 may be inserted into the second through hole 1152 of the second connector 115 of another current collection structure 11, so that the first connector 113 is connected to the second connector 115 of the other current collection structure 11.

[0044] Multiple annular seals 1142 can be fitted onto the outer circumferential surface of the first connector 113. When the first connector 113 is inserted into the second through hole 1152 of the second connector 115 of another flow collector 11, the annular seals 1142 abut against the inner circumferential surface of the second through hole 1152 of the second connector 115 of the other flow collector 11, so as to form a sealing structure between the outer circumferential surface of the first connector 113 and the inner circumferential surface of the second through hole 1152 of the second connector 115 of the other flow collector 11, thereby preventing the temperature regulating medium from leaking out from the gap between the outer circumferential surface of the first connector 113 and the inner circumferential surface of the second through hole 1152 of the second connector 115 of the other flow collector 11.

[0045] Of course, the second connector 115 of another current collection structure 11 can also be inserted into the first through hole 1131 of the first connector 113 of the current collection structure 11, so that the first connector 113 is connected to the second connector 115 of another current collection structure 11.

[0046] In some embodiments, such as Figure 4 and Figure 5 As shown, the first plate 111 has a connecting structure 1112 on the side opposite to the second plate 112. The first connector 113 includes a connecting part 1132, which is movably connected to the connecting structure 1112, so that the first connector can move relative to the collector 110. A sealing ring 1141 is provided between the first connector 113 and the first plate 111. The sealing ring 1141 is arranged around the first through hole 1131. The first connector 113 and the first plate 111 clamp the sealing ring 1141 to form a sealing protection structure.

[0047] By allowing the first connector to move relative to the collector 110 and providing a sealing ring 1141 between the first connector 113 and the first plate 111, a sealed protective structure is formed between the first connector 113 and the first plate 111. While the position of the first connector 113 relative to the collector 110 is adjustable, the temperature regulating medium in the collector cavity 1110 and the first through hole 1131 will not leak out from the gap between the first connector 113 and the first plate 111. When connecting the first connector 113 to the second connector 115 of another current collector structure 11, and connecting the second through hole 1152 to the first through hole 1131 of another current collector structure 11, the position of the first connector 113 can be adaptively adjusted according to the relative position of the first connector 113 and the second connector 115 of the other current collector structure 11, so that the first connector 113 can be accurately connected to the second connector 115 of the other current collector structure 11. This reduces the assembly accuracy requirements of the first connector 113 and the second connector 115 of the other current collector structure 11, which is beneficial to reduce the cost of the battery pack 1 and improve the assembly efficiency of the battery pack 1.

[0048] In some embodiments, the first connector 113 can be moved radially relative to the connecting structure 1112 in the first through hole 1131. When the first connector 113 is connected to the second connector 115 of another collector structure 11, and the second through hole 1152 is connected to the first through hole 1131 of the other collector structure 11, if the first connector 113 and the second connector 115 of the other collector structure 11 are misaligned radially in the first through hole 1131, the first connector 113 can be moved a certain distance radially relative to the connecting structure 1112 in the first through hole 1131 to align the first connector 113 with the second connector 115 of the other collector structure 11, so that the first connector 113 and the second connector 115 of the other collector structure 11 can be connected together quickly and accurately.

[0049] It should be noted that the movement of the first connector 113 relative to the connecting structure 1112 in the radial direction of the first through hole 1131 means that the first connector 113 as a whole moves in the radial direction of the connecting structure 1112 in the first through hole 1131.

[0050] Alternatively, the first connector 113 can be made to swing radially relative to the connecting structure 1112 in the first through hole 1131. When the first connector 113 is connected to the second connector 115 of another collector structure 11, and the second through hole 1152 is connected to the first through hole 1131 of the other collector structure 11, if the first connector 113 and the second connector 115 of the other collector structure 11 are tilted at a certain angle in the radial direction of the first through hole 1131, the first connector 113 can be made to swing radially relative to the connecting structure 1112 in the first through hole 1131 at a certain angle, thereby aligning the first connector 113 and the second connector 115 of the other collector structure 11, so that the first connector 113 and the second connector 115 of the other collector structure 11 can be connected together quickly and accurately.

[0051] It should be noted that the first connector 113 swinging relative to the connecting structure 1112 in the radial direction of the first through hole 1131 means that the first connector 113 deflects relative to the connecting structure 1112 in the radial direction of the first through hole 1131 by a certain angle. That is, when the first connector 113 swings relative to the connecting structure 1112 in the radial direction of the first through hole 1131, different parts of the first connector 113 will have different displacements relative to the connecting connector 1112 in the radial direction of the first through hole 1131.

[0052] Furthermore, the first connector 113 can move axially relative to the connecting structure 1112 in the first through hole 1131. When the first connector 113 is connected to the second connector 115 of another flow collector 11, so that the second through hole 1152 is connected to the first through hole 1131 of another flow collector 11, if the axial distance between the first connector 113 and the second connector 115 of the other flow collector 11 is far in the first through hole 1131, the first connector 113 can be moved axially a certain distance relative to the connecting structure 1112 in the first through hole 1131, so that the first connector 113 and the second connector 115 of the other flow collector 11 can be connected together quickly and accurately.

[0053] It should be noted that the movement of the first connector 113 relative to the connecting structure 1112 in the axial direction of the first through hole 1131 means that the first connector 113 as a whole moves in the axial direction of the connecting structure 1112 in the first through hole 1131.

[0054] In addition, in this application, the first connector 113 can be moved relative to the connection structure 1112 in one or more of the above three modes of operation, which can be determined according to the accuracy requirements of the connection between the first connector 113 and the second connector 115 of another current collection structure 11.

[0055] In some embodiments, such as Figures 3 to 5As shown, the connecting structure 1112 includes a limiting member 1113 connected to the first plate 111. The limiting member 1113 is located on the side of the connecting portion 1132 opposite to the first plate 111. The limiting member 1113 abuts against the side of the connecting portion 1132 opposite to the first plate 111, so that the connecting portion 1132 and the first plate 111 clamp the sealing ring 1141. Thus, a thrust can be applied to the connecting portion 1132 by the limiting member 1113, so that the connecting portion 1132 and the first plate 111 clamp the sealing ring 1141. Moreover, the connecting portion 1132 can also move and swing radially relative to the connecting structure 1112 in the first through hole 1131 of the first connector 113, and can also move a certain distance axially along the first through hole 1131, so that the first connector 113 can move and swing radially relative to the connecting structure 1112 in the first through hole 1131, and can also move axially along the first through hole 1131.

[0056] The limiting member 1113 can be arranged around the first connector 113. This allows the limiting member 1113 to have a larger area to abut against the surface of the connecting portion 1132 on the side opposite to the collector 110, making the limiting member 1113 abut against the first connector 113 more stably.

[0057] In some embodiments, the limiting member 1113 has a clearance hole 1114 through which the first connector 113 passes. The first connector 113 includes a mating section 1136 located within the clearance hole 1114, the inner diameter of the clearance hole 1114 being larger than the outer diameter of the mating section 1136. Thus, the clearance hole 1114 provides space for the mating section 1136 to move and swing radially in the first through hole 1131, thereby allowing the first connector 113 to move and swing radially relative to the connecting structure 1112 in the first through hole 1131.

[0058] In some embodiments, the outer diameter of the connecting portion 1132 may be larger than the inner diameter of the clearance hole 1114. This allows the limiting member 1113 to more stably abut against the side of the connecting portion 1132 away from the current collector 110, preventing the connecting portion 1132 from coming out of the clearance hole 1114.

[0059] In some embodiments, such as Figures 3 to 5As shown, the connecting structure 1112 may also include a connecting protrusion 1115 protruding from the first plate 111 on the side away from the second plate 112. The connecting protrusion 1115 surrounds and forms a groove 1116. The bottom surface of the groove 1116 has an interface 1119 communicating with the collection cavity 1110. The connecting part 1132 is at least partially accommodated in the groove 1116. The first through hole 1131 communicates with the interface 1119. The limiting member 1113 is connected to the connecting protrusion 1115, so that the connection between the limiting member 1113 and the first plate 111 is more convenient. Moreover, the limiting member 1113 can be located on the side of the connecting part 1132 of the first connector 113 away from the first plate 111, so as to stably limit the connecting part 1132.

[0060] The limiting member 1113 can be welded or bonded to the connecting protrusion 1115 to increase the connection strength between the limiting member 1113 and the connecting protrusion 1115 and simplify the structure. Of course, the limiting member 1113 can also be connected to the connecting protrusion 1115 by means of screw fixing, snap-fit, etc.

[0061] Specifically, the connecting protrusion 1115 is an annular protrusion surrounding the first connector 113. The connecting portion 1132 is accommodated within the groove 1116 of the connecting protrusion 1115. Axially, the thickness of the connecting portion 1132 is less than the depth of the groove 1116 in the first through hole 1131 of the first connector 113. The limiting member 1113 is an annular plate-shaped structure surrounding the first connector 113. The outer edge of the limiting member 1113 is connected to the end of the connecting protrusion 1115 away from the current collector 110, and covers the groove 1116 formed by the connecting protrusion 1115.

[0062] In some embodiments, such as Figure 5 and Figure 7 As shown, the connecting portion 1132 is located at the end of the first connector 113 near the first plate 111, and the first through hole 1131 penetrates the connecting portion 1132. The sealing ring 1141 is located between the connecting portion 1132 and the first plate 111, and the connecting portion 1132 and the first plate 111 clamp the sealing ring 1141. Thus, by clamping the sealing ring 1141 between the connecting portion 1132 and the first plate 111, the gap between the first connector 113 and the first plate 111 can be effectively sealed.

[0063] In some embodiments, such as Figure 5 and Figure 7As shown, the connecting portion 1132 has a receiving groove 1133 on the side facing the first plate 111. The receiving groove 1133 surrounds the first through hole 1131, and a portion of the sealing ring 1141 is accommodated in the receiving groove 1133. Therefore, the receiving groove 1133 can play a certain positioning role for the sealing ring 1141, making the position of the sealing ring 1141 relative to the connecting portion 1132 more stable, which is beneficial to improving the sealing stability of the sealing ring 1141.

[0064] The connecting portion 1132 may have a through hole 1134 extending along the length of the first through hole 1131. The through hole 1134 communicates with the receiving groove 1133. A connecting section 1143 is provided in the through hole 1134, and the connecting section 1143 is connected to the sealing ring 1141. As a result, the connection between the sealing ring 1141 and the connecting portion 1132 is more stable, and the sealing ring 1141 is less likely to fall off the connecting portion 1132.

[0065] In some embodiments, the compression ratio of the sealing ring 1141 can be greater than or equal to 8% and less than or equal to 42%, which enables the sealing ring 1141 to have a high sealing effect and sealing stability.

[0066] The compression ratio of the sealing ring 1141 can be greater than or equal to 15% and less than or equal to 30% to improve its sealing effect and extend its sealing time. Specifically, the compression ratio of the sealing ring 1141 can be 18%, 20%, 23%, 26%, 29%, etc.

[0067] In some embodiments, at least two latching portions 1117 may protrude from the side of the first plate 111 opposite to the second plate 112, and the at least two latching portions 1117 are arranged circumferentially along the first connector 113; the at least two latching portions 1117 are used to latch with the second connector 115 of another current collection structure 11. This makes the connection between the first connector 113 and the second connector 115 of the other current collection structure 11 more stable.

[0068] A flange 1151 may be provided on the outer peripheral surface of the second connector 115, and the engaging portion 1117 may include an abutment portion 1118. When the first connector 113 is connected to the second connector 115 of another current collector structure 11, the abutment portion 1118 is located on the side of the flange 1151 facing away from the first plate 111, so that at least two engaging portions 1117 are engaged with the second connector 115 of the other current collector structure 11. By abutting the abutment portion 1118 against the flange 1151 of the second connector 115 of the other current collector structure 11, the movement of the second connector 115 of the other current collector structure 11 away from the corresponding first connector 113 can be restricted, making the connection between the first connector 113 and the second connector 115 of the other current collector structure 11 more stable. Furthermore, when the abutment portion 1118 and the corresponding flange 1151 are spaced apart in the axial direction of the first through hole 1131, the relative positions of the first connector 113 and the second connector 115 of the other flow collection structure 11 in the axial direction of the first through hole 1131 can be adjusted to reduce the assembly accuracy requirements.

[0069] Specifically, flange 1151 is located at the end of second connector 115 away from second plate 112. Abutment portion 1118 is located at the end of snap-fit ​​portion 1117 away from first plate 111.

[0070] Among them, such as Figure 6 As shown, in the axial direction of the first through hole 1131, the maximum distance H between the abutment portion 1118 of the current collector structure 11 and the abutment portion 1118 of the other current collector structure 11 and the flange 1151 is less than or equal to 2mm. This allows the first connector 113 of the current collector structure 11 and the second connector 115 of the other current collector structure 11 to have a larger adjustment space in the axial direction of the first through hole 1131. This also lowers the assembly precision requirements when connecting the first connector 113 of the current collector structure 11 and the second connector 115 of the other current collector structure 11, which helps to reduce the production cost of the battery pack 1 and improve the production efficiency of the battery pack 1.

[0071] In the axial direction of the first through hole 1131, the maximum distance H between the abutment portion 1118 and the flange 1151 can be 1.8mm, 1.7mm, 1.5mm, 1mm, 0.8mm, etc., which can be determined according to the structure of the temperature adjustment component 10, and is not limited here.

[0072] This application also provides a temperature regulating component, which includes a current collection structure. The specific structure of the current collection structure is as described in the above embodiments. Since this temperature regulating component adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0073] like Figure 1 and Figure 2As shown, the temperature regulating assembly 10 includes a temperature regulating plate 12 and a flow collecting structure 11. The temperature regulating plate 12 has a flow channel 121. The structure of the flow collecting structure 11 can refer to the above embodiments, and will not be repeated here. One end of the temperature regulating plate 12 is connected to the flow collecting body 110 of the flow collecting structure 11, so that the flow channel 121 of the temperature regulating plate 12 is connected to the flow collecting cavity 1110 of the flow collecting body 110 of the flow collecting structure 11.

[0074] This application also provides a battery pack, which includes a temperature regulation component. The specific structure of the temperature regulation component is as described in the above embodiments. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0075] Among them, such as Figure 1 As shown, the battery pack 1 includes a cell assembly 2 and a temperature regulation assembly 10. The cell assembly 2 includes multiple rows of cells 20, and the temperature regulation plate 12 of the temperature regulation assembly 10 is disposed between two adjacent rows of cells 20.

[0076] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A current collection structure, characterized in that, include: The current collector includes a first plate and a second plate disposed opposite to each other, the first plate and the second plate being sealed together and forming a current collection cavity; A first connector is located on the side of the first plate away from the second plate, and the first connector includes a first through hole communicating with the collection cavity; The second connector is located on the side of the second plate away from the first plate. The second connector includes a second through hole communicating with the collection cavity. The first connector is used to connect with the second connector of another collection structure so that the second through hole communicates with the first through hole of another collection structure.

2. The current collection structure as described in claim 1, characterized in that, The first plate and the second plate are bonded or welded together to create a sealed connection; or... A sealing element is provided between the first plate and the second plate. The first plate and the second plate are connected to each other and clamp the sealing element so that the first plate and the second plate are sealed together.

3. The current collection structure as described in claim 1, characterized in that, The first plate body has a connecting structure on the side opposite to the second plate body. The first connector includes a connecting part, which is movably connected to the connecting structure. A sealing ring is provided between the first connector and the first plate body. The sealing ring surrounds the first through hole. The first connector and the first plate body clamp the sealing ring to form a sealing and protective structure.

4. The current collection structure as described in claim 3, characterized in that, The first connector is movable radially relative to the connection structure in the first through hole; and / or, The first connector can swing radially relative to the connection structure in the first through hole; and / or, The first connector is axially movable relative to the connecting structure in the first through hole.

5. The current collection structure as described in claim 4, characterized in that, The connection structure includes a limiting member connected to the first plate. The limiting member is located on the side of the connection portion away from the first plate. The limiting member is used to abut against the side of the connection portion away from the first plate, so that the connection portion and the first plate clamp the sealing ring.

6. The current collection structure as described in claim 5, characterized in that, The connection structure further includes a connecting protrusion protruding from the side of the first plate away from the second plate. The connecting protrusion surrounds and forms a groove. The bottom surface of the groove has an interface communicating with the collection cavity. The connecting part is at least partially accommodated in the groove. The first through hole communicates with the interface. The limiting member is connected to the connecting protrusion.

7. The current collection structure as described in claim 6, characterized in that, The limiting member is welded or bonded to the connecting protrusion.

8. The current collection structure as described in claim 5, characterized in that, The limiting member is arranged around the first connector; the limiting member has a clearance hole for the first connector to pass through; The first connector includes a mating section located within the clearance hole, wherein the inner diameter of the clearance hole is larger than the outer diameter of the mating section.

9. The current collection structure as described in claim 8, characterized in that, The outer diameter of the connecting part is larger than the inner diameter of the clearance hole.

10. The current collection structure as described in claim 3, characterized in that, The connecting portion is located at one end of the first connector near the first plate, and the first through hole penetrates the connecting portion; the sealing ring is located between the connecting portion and the first plate, and the connecting portion and the first plate clamp the sealing ring.

11. The current collection structure as described in claim 10, characterized in that, The connecting part has a receiving groove on the side facing the first plate, the receiving groove is arranged around the first through hole, and a part of the sealing ring is accommodated in the receiving groove.

12. The current collection structure as described in claim 11, characterized in that, The connecting part has a through hole extending along the length direction of the first through hole. The through hole communicates with the receiving groove. A connecting section is provided in the through hole, and the connecting section is connected to the sealing ring.

13. The current collection structure as described in any one of claims 3 to 12, characterized in that, The compression ratio of the sealing ring is greater than or equal to 8% and less than or equal to 42%.

14. The current collection structure as described in claim 13, characterized in that, The compression ratio of the sealing ring is greater than or equal to 15% and less than or equal to 30%.

15. The current collection structure as described in any one of claims 1 to 12, characterized in that, The first plate body has at least two latching portions protruding on the side opposite to the second plate body, and the at least two latching portions are arranged along the circumference of the first connector; the at least two latching portions are used to latch with the second connector of another current collection structure.

16. The current collection structure as described in claim 15, characterized in that, The outer peripheral surface of the second connector is provided with a flange, and the snap-fit ​​portion includes an abutment portion. When the first connector is connected to the second connector of another current collection structure, the abutment portion is located on the side of the flange away from the first plate body, so that the at least two snap-fit ​​portions snap-fit ​​with the second connector of another current collection structure.

17. The current collection structure as described in claim 16, characterized in that, In the axial direction of the first through hole, the maximum distance between the abutment portion of the flow collection structure and the flange of the other flow collection structure is less than or equal to 2 mm.

18. A temperature regulating component, characterized in that, include: A temperature regulating plate, wherein a flow channel is provided inside the temperature regulating plate; A flow collection structure, wherein the flow collection structure is the flow collection structure according to any one of claims 1 to 17, wherein one end of the temperature regulating plate is connected to the flow collection fluid of the flow collection structure so that the flow channel is connected to the flow collection cavity of the flow collection fluid.

19. A battery pack, characterized in that, include: Battery cell assembly, including multiple rows of battery cells; A temperature regulating component, wherein the temperature regulating component is the temperature regulating component of claim 18, and the temperature regulating plate of the temperature regulating component is disposed between two adjacent rows of the battery cells.

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