Current collecting structure, temperature adjusting assembly and battery pack

Abstract

The invention provides a current collecting structure, a temperature adjusting assembly and a battery pack, the current collecting structure comprises a current collector and a connecting piece, the current collector comprises a current collecting cavity, and one end of the current collector along a first direction is provided with an opening communicated with the current collecting cavity; the connecting piece comprises a channel penetrating in the first direction, the connecting piece comprises a first end and a second end which are distributed in the first direction, and the first end is connected with the end, with the opening, of the current collector in an inserted mode so that the current collecting cavity can be communicated with the channel; the second end is used for being connected with a temperature adjusting plate so that the channel can communicate with a flow channel in the temperature adjusting plate. The current collector is provided with a first limiting part, the connecting piece is provided with a first abutting part, the first limiting part is located on one side, in the first direction, of the first abutting part, and the first limiting part is used for abutting against the first abutting part so as to limit the connecting piece to move relative to the current collector in the first direction. According to the current collecting structure provided by the embodiment of the invention, the production cost of the current collector can be reduced, so that the cost of the current collecting structure is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a current collecting structure, a temperature adjusting assembly and a battery pack. BACKGROUND

[0002] The battery pack usually comprises a plurality of rows of battery cells and a temperature adjusting assembly, the temperature adjusting assembly comprises a temperature adjusting plate arranged between two adjacent rows of battery cells, and a current collecting structure connected with the temperature adjusting plate, the adjacent temperature adjusting plates are connected through the current collecting structure, so that the temperature adjusting medium is distributed to different temperature adjusting plates through the current collecting structure, and the battery cells of the battery pack are cooled or heated through the temperature adjusting plates.

[0003] However, in the related art, the current collector of the current collecting structure is welded with the temperature adjusting plate, which results in high manufacturing cost of the current collector and increases the production cost of the current collecting structure. SUMMARY

[0004] Embodiments of the present application provide a current collecting structure, a temperature adjusting assembly and a battery pack, which can improve the technical problem of high production cost of the current collector of the current collecting structure.

[0005] In a first aspect, embodiments of the present application provide a current collecting structure, comprising:

[0006] a current collector comprising a current collecting cavity, the current collector having an opening in communication with the current collecting cavity at one end along a first direction;

[0007] a connecting piece comprising a passage penetrating along the first direction, the connecting piece comprising a first end and a second end distributed along the first direction, the first end being inserted into the opening of the current collector at one end to make the current collecting cavity communicate with the passage, and the second end being used to connect with a temperature adjusting plate to make the passage communicate with a flow channel in the temperature adjusting plate;

[0008] wherein the current collector is provided with a first limiting portion, the connecting piece is provided with a first abutting portion, the first limiting portion is located on one side of the first abutting portion along the first direction, and the first limiting portion is used to abut against the first abutting portion to limit the movement of the connecting piece relative to the current collector along the first direction.

[0009] In an embodiment, the first end of the connecting piece is inserted into the opening to make the first end inserted into the opening of the current collector at one end, the first limiting portion is protruded from an inner circumferential surface of the current collecting cavity, and the first abutting portion is protruded from an outer circumferential surface of the connecting piece, so that the first end of the connecting piece is more convenient to be inserted into the opening of the current collector at one end, and the first limiting portion can stably abut against the first abutting portion to limit the movement of the connecting piece relative to the current collector along the first direction; or

[0010] The first end of the connecting piece is inserted into the one end of the current collector having the opening, the first limiting portion is arranged on the outer circumferential surface of the current collector, and the first abutting portion is arranged on the inner circumferential surface of the channel, so that the first end of the connecting piece is more conveniently inserted into the one end of the current collector having the opening, and the first limiting portion can be stably abutted against the first abutting portion to limit the movement of the connecting piece relative to the current collector in the first direction.

[0011] In an embodiment, the first abutting portion extends along the circumference of the opening to increase the length of the first abutting portion extending along the circumference of the opening of the current collector, so that the first limiting portion can be more stably abutted against the first abutting portion; and / or the first limiting portion extends along the circumference of the opening to increase the length of the first limiting portion extending along the circumference of the opening of the current collector, so that the first limiting portion can be more stably abutted against the first abutting portion.

[0012] In an embodiment, the connecting piece is provided with a second abutting portion, the second abutting portion is located on one side of the first limiting portion along the first direction, and the first limiting portion is used to abut against the second abutting portion to limit the reverse movement of the connecting piece relative to the current collector in the first direction. Through the cooperation of the first abutting portion and the second abutting portion with the first limiting portion, the relative movement of the current collector and the connecting piece in the first direction and the reverse direction of the first direction can be limited, so that the connection of the current collector and the connecting piece is more stable; or,

[0013] The current collector is provided with a second limiting portion, the first abutting portion is located on one side of the second limiting portion along the first direction, and the second limiting portion is used to abut against the first abutting portion to limit the reverse movement of the connecting piece relative to the current collector in the first direction. Through the cooperation of the first limiting portion and the second limiting portion with the first abutting portion, the relative movement of the current collector and the connecting piece in the first direction and the reverse direction of the first direction can be limited, so that the connection of the current collector and the connecting piece is more stable.

[0014] In an embodiment, the current collector and the connecting piece are injection-molded to connect, so that the processing of the current collector and the connecting piece is more convenient, and the connection of the current collector and the connecting piece is more stable; or the current collector and the connecting piece are bonded to connect, so that the connection of the current collector and the connecting piece is more convenient.

[0015] In an embodiment, the current collecting structure further comprises:

[0016] A first joint movably mounted on one side of the current collector along a second direction, the first joint comprising a first through hole in communication with the current collecting cavity, the second direction being at an angle to the first direction;

[0017] A second joint is arranged on the side of the current collector away from the first joint, and the second joint comprises a second through hole in communication with the current collector. The second joint is used to connect with the first joint of another current collecting structure, so that the second through hole is in communication with the first through hole of another current collecting structure.

[0018] By making the first joint movable relative to the current collector, when the first joint is connected with the second joint of another current collecting structure to make the second through hole in communication with the first through hole of another current collecting structure, the position of the first joint can be adjusted adaptively according to the relative position of the first joint and the second joint of another current collecting structure, so that the first joint can be accurately connected with the second joint of another current collecting structure, the assembly precision requirement of the first joint and the second joint of another current collecting structure is reduced, the cost of the battery pack is reduced, and the assembly efficiency of the battery pack is improved.

[0019] In an embodiment, the first joint comprises a guide section extending from one end of the first joint in the second direction towards the current collector, and the diameter of the circumscribed circle of the guide section gradually decreases in the second direction. When the first joint is inserted into the second through hole of the second joint of another current collecting structure to connect the first joint with the second joint of another current collecting structure, the outer peripheral surface of the guide section can guide, so that the first joint can be quickly and accurately inserted into the second through hole of the second joint of another current collecting structure, and the connection efficiency of the two current collecting structures is improved; and / or,

[0020] The second through hole comprises a guide hole section extending from one end of the second joint away from the current collector in the second direction, and the diameter of the inscribed circle of the inner diameter of the guide hole section gradually decreases in the second direction. When the first joint is inserted into the second through hole of the second joint of another current collecting structure to connect the first joint with the second joint of another current collecting structure, the inner peripheral surface of the guide hole section can guide, so that the first joint can be quickly and accurately inserted into the second through hole of the second joint of another current collecting structure, and the connection efficiency of the two current collecting structures is improved.

[0021] In an embodiment, the first joint is movable relative to the current collector in the radial direction of the first through hole, and the movement amount of the first joint relative to the current collector in the radial direction of the first through hole is λ.

[0022] The difference between the maximum circumscribed circle radius and the minimum circumscribed circle radius of the guide section is X1, and X1≥0.5λ, so as to further improve the guiding effect of the guide section, and the first joint is more quickly and accurately inserted into the second through hole of the second joint of another current collecting structure; and / or,

[0023] The difference between the maximum inscribed circle radius and the minimum inscribed circle radius of the guide hole section is X2, wherein X2-0.5λ≥0.5mm, so as to further improve the guiding effect of the guide hole section and make the first connector more quickly and accurately inserted into the second through hole of the second connector of another current collecting structure.

[0024] In an embodiment, the current collector is provided with a connecting structure on one side in the second direction, the first connector comprises a connecting part which is movably connected with the connecting structure, and a sealing ring is arranged between the first connector and the current collector and surrounds the first through hole, so that the first connector and the current collector clamp the sealing ring to form a sealed protection structure. By movably connecting the first connector with the current collector and arranging the sealing ring between the first connector and the current collector to form a sealed protection structure, the position of the first connector relative to the current collector can be adjusted, and the temperature regulating medium in the current collecting cavity and the first through hole cannot leak out of the gap between the first connector and the first plate body.

[0025] In an embodiment, the first connector can move in the radial direction of the first through hole relative to the connecting structure. When the first connector is connected with the second connector of another current collecting structure to make the second through hole communicate with the first through hole of another current collecting structure, if the first connector and the second connector of another current collecting structure are misaligned in the radial direction of the first through hole, the first connector and the second connector of another current collecting structure can be aligned by moving the first connector relative to the connecting structure in the radial direction of the first through hole by a certain distance, so that the first connector and the second connector of another current collecting structure can be quickly and accurately connected together; and / or,

[0026] The first connector can swing in the radial direction of the first through hole relative to the connecting structure. When the first connector is connected with the second connector of another current collecting structure to make the second through hole communicate with the first through hole of another current collecting structure, if the first connector and the second connector of another current collecting structure are inclined by a certain angle in the radial direction of the first through hole, the first connector and the second connector of another current collecting structure can be aligned by swinging the first connector relative to the connecting structure in the radial direction of the first through hole by a certain angle, so that the first connector and the second connector of another current collecting structure can be quickly and accurately connected together; and / or,

[0027] The first connector can move in the axial direction of the first through hole relative to the connecting structure. When the first connector is connected with the second connector of another current collecting structure to make the second through hole communicate with the first through hole of another current collecting structure, if the distance between the first connector and the second connector of another current collecting structure is relatively far in the axial direction of the first through hole, the first connector and the second connector of another current collecting structure can be quickly and accurately connected together by moving the first connector relative to the connecting structure in the axial direction of the first through hole by a certain distance.

[0028] In an embodiment, the connecting structure comprises a limiting member connected with the current collector, the limiting member is located on the side of the connecting portion away from the current collector, and the limiting member is used to abut against the side of the connecting portion away from the current collector to clamp the sealing ring between the connecting portion and the current collector. In this way, the limiting member can apply a pushing force to the connecting portion to clamp the connecting portion and the current collector to the sealing ring. Moreover, the connecting portion can also move and swing in the radial direction of the first through hole of the first joint relative to the connecting structure, and can also move a certain distance in the axial direction of the first through hole, so that the first joint can move and swing in the radial direction of the first through hole relative to the connecting structure, and can also move in the axial direction of the first through hole.

[0029] In an embodiment, the connecting structure further comprises a connecting protrusion protruding from the current collecting structure on one side in the second direction, the connecting protrusion encloses a groove, the bottom surface of the groove is provided with an interface communicating with the current collecting cavity, the connecting portion is at least partially accommodated in the groove, the first through hole communicates with the interface, and the limiting member is connected with the connecting protrusion to facilitate the connection of the limiting member and the current collector, and the limiting member can be located on the side of the connecting portion of the first joint away from the current collector to stably limit the connecting portion.

[0030] In an embodiment, the limiting member is arranged around the periphery of the first joint, and the limiting member is provided with an avoiding hole for the first joint to pass through.

[0031] The first joint comprises a fitting section located in the avoiding hole, the inner diameter of the avoiding hole is greater than the outer diameter of the fitting section, and the outer diameter of the connecting portion is greater than the inner diameter of the avoiding hole. In this way, the limiting member can abut against the surface on the side of the connecting portion away from the current collector with more area, so that the limiting member can abut against the connecting portion more stably. Moreover, the avoiding hole has a space for the fitting section to move and swing in the radial direction of the first through hole, so that the first joint can move and swing in the radial direction of the first through hole relative to the connecting structure. In addition, the limiting member can abut against the side of the connecting portion away from the current collector more stably, and the connecting portion can be prevented from being pulled out of the avoiding hole.

[0032] In an embodiment, the side of the limiting member away from the current collector is provided with a first clamping portion, the side of the current collector away from the first joint is provided with a second clamping portion, and the second clamping portion is used to clamp with the first clamping portion of another current collecting structure to limit the relative movement distance of the two current collecting structures in the second direction. In this way, the connection between the first joint and the second joint of another current collecting structure can be more stable, and the risk of the two current collecting structures moving away from each other in the second direction can be reduced.

[0033] In an embodiment, the first clamping part comprises a first sub-clamping part, the second clamping part comprises two first sub-clamping parts spaced apart along the second direction, the first sub-clamping part is located between the two second sub-clamping parts, and the two second sub-clamping parts are used to abut against the first sub-clamping part to limit the relative movement distance of the two current collecting structures in the second direction.

[0034] In the second direction, the distance between the two second sub-clamping parts is greater than the width of the first sub-clamping part. In this way, the first sub-clamping part can move a certain distance in the second direction between the two second sub-clamping parts, which helps to reduce the assembly precision requirement of the two current collecting structures.

[0035] In an embodiment, the connecting part is located at one end of the first connector close to the current collector, and the first through hole penetrates through the connecting part; the sealing ring is located between the connecting part and the current collector, and the connecting part and the current collector clamp the sealing ring. By clamping the sealing ring between the connecting part and the current collector, the gap between the first connector and the current collector can be effectively sealed.

[0036] In an embodiment, the compression ratio of the sealing ring is greater than or equal to 10% and less than or equal to 50%, which can make the sealing ring have higher sealing effect and sealing stability.

[0037] In an embodiment, the compression ratio of the sealing ring is greater than or equal to 15% and less than or equal to 30%, so that the sealing effect of the sealing ring is better and the sealing time is longer.

[0038] In a second aspect, embodiments of the present application provide a temperature adjusting assembly, comprising:

[0039] a temperature adjusting plate, wherein a flow channel is arranged in the temperature adjusting plate;

[0040] a current collecting structure, wherein the current collecting structure is the current collecting structure as described above, the current collecting structure comprises a current collector and a connecting piece, the current collector comprises a current collecting cavity, and one end of the current collector along a first direction has an opening communicating with the current collecting cavity; the connecting piece comprises a through channel penetrating along the first direction, and the connecting piece comprises a first end and a second end distributed along the first direction, the first end is inserted into one end of the current collector having the opening, so that the current collecting cavity communicates with the through channel; the second end is used to connect one end of the temperature adjusting plate, so that the through channel communicates with the flow channel in the temperature adjusting plate; the current collector is provided with a first limiting part, the connecting piece is provided with a first abutting part, the first limiting part is located on one side of the first abutting part along the first direction, and the first limiting part is used to abut against the first abutting part to limit the movement of the connecting piece relative to the current collector along the first direction.

[0041] In a third aspect, embodiments of the present application provide a battery pack, comprising:

[0042] The cell assembly comprises a plurality of rows of cells;

[0043] The temperature adjusting assembly is as described above, and the temperature adjusting plate of the temperature adjusting assembly is arranged between two adjacent rows of cells.

[0044] The embodiments of the present application have the following beneficial effects:

[0045] The current collecting structure provided by the embodiments of the present application is connected by inserting the first end of the connecting piece into the one end of the current collector with the opening, so that the current collecting cavity of the current collector and the channel of the connecting piece are in communication, and the first limiting part is arranged on the current collector, the first abutting part is arranged on the connecting piece, and the first limiting part is located on one side of the first abutting part along the first direction, so that the first limiting part is used for abutting against the first abutting part to limit the movement of the connecting piece relative to the current collector along the first direction, thereby stably connecting the connecting piece and the current collector together. When the second end of the connecting piece is connected with the temperature adjusting plate, so that the flow channel in the temperature adjusting plate and the channel of the connecting piece are in communication, the flow channel in the temperature adjusting plate and the current collecting cavity of the current collector are in communication.

[0046] Compared with the current collector directly welded with the temperature adjusting plate in the related art, the current collector of the current collecting structure provided by the embodiments of the present application is connected with the connecting piece first, and then the connecting piece is connected with the temperature adjusting plate, so that the current collector does not need to be directly welded with the temperature adjusting plate, and the current collector and the temperature adjusting plate can be made of different materials, which is beneficial to reducing the production cost of the current collector and further reducing the cost of the current collecting structure. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0048] Figure 1 The structural schematic diagram of one embodiment of the battery pack provided by the embodiments of the present application;

[0049] Figure 2 The cooperation structural schematic diagram of the cell and the temperature adjusting assembly provided by the embodiments of the present application;

[0050] Figure 3 The structural schematic diagram of one embodiment of the current collecting structure provided by the embodiments of the present application;

[0051] Figure 4 The structural schematic diagram of one embodiment of the current collecting structure provided by the embodiments of the present application; Figure 3a sectional view along the direction of A-A;

[0052] Figure 5 for Figure 3 a sectional view along the direction of B-B;

[0053] Figure 6 an exploded structural schematic view of one embodiment of the current application;

[0054] Figure 7 a structural schematic view of two current collecting structures connected according to the embodiment of the current application;

[0055] Figure 8 for Figure 7 a sectional view along the direction of C-C.

[0056] Explanation of reference signs:

[0057] 1 - battery pack; 10 - temperature adjusting assembly; 11 - current collecting structure; 110 - current collector; 1110 - current collecting cavity; 1112 - connecting structure; 1113 - limiting piece; 1114 - avoiding hole; 1115 - connecting protrusion; 1116 - groove; 1119 - interface; 1120 - opening; 1121 - first limiting part; 1122 - second limiting part; 1123 - first clamping part; 1124 - first sub-clamping part; 1125 - first extending part; 113 - first connector; 1131 - first through hole; 1132 - connecting part; 1136 - matching section; 1137 - guiding section; 1138 - positioning part; 1139 - positioning groove; 115 - second connector; 1152 - second through hole; 1153 - guiding hole section; 1154 - second clamping part; 1155 - second sub-clamping part; 1156 - second extending part; 1141 - sealing ring; 1142 - annular sealing piece; 116 - connecting piece; 1161 - first end; 1162 - second end; 1163 - channel; 1164 - first abutting part; 1165 - second abutting part; 12 - temperature adjusting plate; 121 - flow channel; 2 - battery cell assembly; 20 - battery cell; 30 - box body; X - first direction; Y - second direction. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0059] The embodiments of the present application provide a current collecting structure, a temperature adjusting assembly and a battery pack. The following will be described in detail respectively.

[0060] Figure 1 The structural schematic diagram of one embodiment of the battery pack provided by the embodiments of the present application. Figure 2 The cooperation structural schematic diagram of the battery cell and the temperature adjusting assembly provided by the embodiments of the present application. As shown in Figure 1 and Figure 2 The battery pack 1 includes a battery cell assembly 2 and a temperature adjusting assembly 10, the battery cell assembly 2 includes a plurality of battery cells 20, and the temperature adjusting assembly 10 exchanges heat with the outer circumferential surface of the battery cells 20 to adjust the temperature of the plurality of battery cells 20, so that the plurality of battery cells 20 are at a suitable working temperature.

[0061] It should be noted that the temperature adjusting assembly 10 can heat the plurality of battery cells 20, or can cool the plurality of battery cells 20, which can be determined according to the ambient temperature of the internal temperature meter of the battery pack 1.

[0062] The battery cell assembly 2 can include a plurality of rows of battery cells 20, the temperature adjusting assembly 10 includes a temperature adjusting plate 12 and a current collecting structure 11, the temperature adjusting plate 12 is provided with a flow channel 121, the current collecting structure 11 is connected with the temperature adjusting plate 12, and two adjacent temperature adjusting assemblies 10 are connected through the current collecting structure 11, so that the temperature adjusting medium is distributed to the flow channels 121 of different temperature adjusting plates 12 through the current collecting structure 11, and the battery cells 20 of the battery pack 1 are exchanged through the temperature adjusting plate 12 to cool or heat the battery cells 20. The temperature adjusting medium can be a cooling liquid, a refrigerant or the like, which is not limited here.

[0063] Specifically, the battery pack 1 comprises a box 30, and the cell assembly 2 and the temperature adjusting assembly 10 are arranged in the box 30. The temperature adjusting assembly 10 is arranged between two adjacent rows of the cells 20 of the cell assembly 2. The temperature adjusting plate 12 of the temperature adjusting assembly 10 is located between the two adjacent rows of the cells 20. The temperature adjusting plate 12 is in contact with the outer circumferential surface of the two adjacent rows of the cells 20 directly or through a heat conduction layer. After the temperature adjusting medium flows into the flow channel 121 of the temperature adjusting plate 12 through the current collecting structure 11, the temperature adjusting medium exchanges heat with the cells 20 through the temperature adjusting plate 12, so as to cool or heat the cells 20.

[0064] In order to reduce the production cost of the current collecting structure, an embodiment of the present application provides a current collecting structure.

[0065] As shown in Figure 3 and Figure 4 The current collecting structure 11 comprises a current collector 110 and a connecting piece 116. The current collector 110 comprises a current collecting cavity 1110. The current collector 110 has an opening 1120 communicating with the current collecting cavity 1110 at one end along a first direction X. The connecting piece 116 comprises a channel 1163 penetrating along the first direction X. The connecting piece 116 comprises a first end 1161 and a second end 1162 distributed along the first direction X. The first end 1161 is inserted into the one end of the current collector 110 having the opening 1120, so that the current collecting cavity 1110 communicates with the channel 1163. The second end 1162 is used to connect with the temperature adjusting plate 12, so that the channel 1163 communicates with the flow channel 121 in the temperature adjusting plate 12.

[0066] The first limiting part 1121 can be arranged on the current collector 110, the first abutting part 1164 can be arranged on the connecting piece 116, and the first limiting part 1121 is located on one side of the first abutting part 1164 along the first direction X. The first limiting part 1121 is used to abut against the first abutting part 1164, so as to limit the movement of the connecting piece 116 relative to the current collector 110 along the first direction X.

[0067] The current application provides a current collecting structure 11. The first end 1161 of the connecting piece 116 is inserted into one end of the current collector 110 having the opening 1120, so that the current collecting cavity 1110 of the current collector 110 is in communication with the channel 1163 of the connecting piece 116. The first limiting part 1121 is arranged on the current collector 110, the first abutting part 1164 is arranged on the connecting piece 116, and the first limiting part 1121 is located on one side of the first abutting part 1164 along the first direction X. The first limiting part 1121 is used to abut against the first abutting part 1164 to limit the movement of the connecting piece 116 relative to the current collector 110 along the first direction X, so that the connecting piece 116 and the current collector 110 are stably connected together. When the second end 1162 of the connecting piece 116 is connected with the temperature adjusting plate 12, the flow channel 121 in the temperature adjusting plate 12 is in communication with the channel 1163 of the connecting piece 116, so that the flow channel 121 in the temperature adjusting plate 12 is in communication with the current collecting cavity 1110 of the current collector 110, and the temperature adjusting medium in the current collecting cavity 1110 of the current collector 110 can flow into the flow channel 121 of the temperature adjusting plate 12, or the temperature adjusting medium in the flow channel 121 of the temperature adjusting plate 12 can flow into the current collecting cavity 1110 of the current collector 110.

[0068] Compared with the current collector 110 directly welded with the temperature adjusting plate 12 in the related art, the current collector 110 of the current collecting structure 11 provided by the current application is first connected with the connecting piece 116, and then the connecting piece 116 is connected with the temperature adjusting plate 12. The current collector 110 does not need to be directly welded with the temperature adjusting plate 12, and the current collector 110 and the temperature adjusting plate 12 can be made of different materials, which is beneficial to reduce the production cost of the current collector 110 and further reduce the cost of the current collecting structure 11.

[0069] Especially when the temperature adjusting plate 12 is made of metal with high thermal conductivity, the current collector 110 can be made of plastic or other low-cost materials, so that the cost of the current collector 110 of the current collecting structure 11 is lower.

[0070] In some embodiments, as shown in Figure 4 The first end 1161 of the connecting piece 116 can be inserted into the opening 1120 of the current collector 110, so that the first end 1161 is inserted into one end of the current collector 110 having the opening 1120, thereby making the insertion of the first end 1161 of the connecting piece 116 into one end of the current collector 110 having the opening 1120 more convenient. The first limiting part 1121 can be protruded from the inner circumferential surface of the current collecting cavity 1110, and the first abutting part 1164 can be protruded from the outer circumferential surface of the connecting piece 116. The first limiting part 1121 can stably abut against the first abutting part 1164 to limit the movement of the connecting piece 116 relative to the current collector 110 along the first direction X.

[0071] The first abutting portion 1164 can extend along the circumference of the opening 1120 of the current collector 110 to increase the length of the first abutting portion 1164 extending along the circumference of the opening 1120 of the current collector 110, so that the first limiting portion 1121 can abut against the first abutting portion 1164 more stably.

[0072] In some embodiments, the first limiting portion 1121 can extend along the circumference of the opening 1120 to increase the length of the first limiting portion 1121 extending along the circumference of the opening 1120 of the current collector 110, so that the first limiting portion 1121 can abut against the first abutting portion 1164 more stably.

[0073] It should be noted that the first limiting portion 1121 and the first abutting portion 1164 can both extend along the circumference of the opening 1120, or only the first limiting portion 1121 or the first abutting portion 1164 can extend along the circumference of the opening 1120. Of course, the former can make the abutment of the first limiting portion 1121 and the first abutting portion 1164 more stable.

[0074] In other embodiments, the current collector 110 can have one end of the opening 1120 inserted into the channel 1163 of the connecting piece 116, so that the first end 1161 is inserted into the one end of the opening 1120 of the current collector 110, thereby making it more convenient for the first end 1161 of the connecting piece 116 to be inserted into the one end of the opening 1120 of the current collector 110. The first limiting portion 1121 can be protruded from the outer circumferential surface of the current collector 110, and the first abutting portion 1164 can be protruded from the inner circumferential surface of the channel 1163, so that the first limiting portion 1121 can abut against the first abutting portion 1164 stably to limit the movement of the connecting piece 116 relative to the current collector 110 along the first direction X.

[0075] In some embodiments, as shown in Figure 4 The connecting piece 116 can be provided with a second abutting portion 1165 located on one side of the first limiting portion 1121 along the first direction X, and the first limiting portion 1121 is used to abut against the second abutting portion 1165 to limit the movement of the connecting piece 116 relative to the current collector 110 in the reverse direction of the first direction X. Thus, through the cooperation of the first abutting portion 1164 and the second abutting portion 1165 with the first limiting portion 1121, the relative movement of the current collector and the connecting piece 116 in the first direction X and the reverse direction of the first direction X can be limited, so that the connection of the current collector and the connecting piece 116 is more stable.

[0076] Continuing to refer to Figure 4The second limiting portion 1122 can be arranged on the current collector 110, and the first abutting portion 1164 is located on one side of the second limiting portion 1122 along the first direction X. The second limiting portion 1122 is used to abut with the first abutting portion 1164 to limit the reverse movement of the connecting piece 116 relative to the current collector along the first direction X. Thus, by cooperation of the first limiting portion 1121 and the second limiting portion 1122 with the first abutting portion 1164, the relative movement of the current collector and the connecting piece 116 along the first direction X and the reverse direction of the first direction X can be limited, and the connection of the current collector and the connecting piece 116 is more stable.

[0077] Specifically, the connecting piece 116 is a pipe structure extending along the first direction X. The first abutting portion 1164 abuts with one side of the second limiting portion 1122 along the first direction X. The first limiting portion 1121 abuts with one side of the first abutting portion 1164 along the first direction X. The second abutting portion 1165 abuts with one side of the first limiting portion 1121 along the first direction X. The second abutting portion 1165 is protruded on the outer periphery of the connecting piece 116. The second abutting portion 1165 extends along the circumferential direction of the opening 1120. The second limiting portion 1122 is arranged on the inner periphery of the current collecting cavity 1110. The second limiting portion 1122 extends along the circumferential direction of the opening 1120. Among them, the first abutting portion 1164 extends along the circumferential direction of the opening 1120 in a ring structure. The second abutting portion 1165 extends along the circumferential direction of the opening 1120 in a ring structure. The first limiting portion 1121 extends along the circumferential direction of the opening 1120 in a ring structure. The second limiting portion 1122 extends along the circumferential direction of the opening 1120 in a ring structure.

[0078] In some embodiments, the current collector and the connecting piece 116 can be injection molded to connect, so that the processing of the current collector and the connecting piece 116 is more convenient, and the connection of the current collector and the connecting piece 116 is more stable.

[0079] Alternatively, the current collector and the connecting piece 116 can be bonded to connect, so that the connection of the current collector and the connecting piece 116 is more convenient.

[0080] In some embodiments, as Figure 5 and Figure 7As shown, the current collecting structure 11 can further include a first connector 113 movably mounted on one side of the current collector 110 along a second direction Y, the first connector 113 including a first through hole 1131 in communication with the current collecting cavity 1110, the second direction Y being at an angle with the first direction X. The second connector 115 is arranged on the side of the current collector 110 away from the first connector 113, the second connector 115 including a second through hole 1152 in communication with the current collector 110, the second connector 115 being used to connect with the first connector 113 of another current collecting structure 11, so that the second through hole 1152 is in communication with the first through hole 1131 of the other current collecting structure 11, and the current collecting cavities 1110 of the current collectors 110 of the two current collecting structures 11 connected with each other are in communication, so that the two temperature adjusting assemblies 10 are connected in parallel or in series through the current collecting structure 11.

[0081] By making the first connector 113 movable relative to the current collector 110, when the first connector 113 is connected with the second connector 115 of the other current collecting structure 11 so that the second through hole 1152 is in communication with the first through hole 1131 of the other current collecting structure 11, the position of the first connector 113 can be adjusted adaptively according to the relative position of the first connector 113 and the second connector 115 of the other current collecting structure 11, so that the first connector 113 can be accurately connected with the second connector 115 of the other current collecting structure 11, and the assembly precision requirement of the first connector 113 and the second connector 115 of the other current collecting structure 11 is reduced, which is beneficial to reduce the cost of the battery pack 1 and improve the assembly efficiency of the battery pack 1.

[0082] It should be noted that the first direction X can be substantially perpendicular to the second direction Y, or the first direction X and the second direction Y can form an acute angle, which can be determined according to the shape and size of the current collecting structure 11.

[0083] In some embodiments, the first connector 113 can be inserted into the second through hole 1152 of the second connector 115 of the other current collecting structure 11, so as to connect the first connector 113 with the second connector 115 of the other current collecting structure 11.

[0084] In this case, a plurality of annular sealing members 1142 can be sleeved on the outer circumferential surface of the first connector 113, and when the first connector 113 is inserted into the second through hole 1152 of the second connector 115 of the other current collecting structure 11, the annular sealing members 1142 abut against the inner circumferential surface of the second through hole 1152 of the second connector 115 of the other current collecting structure 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 current collecting structure 11, thereby preventing the temperature adjusting medium from leaking out of 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 current collecting structure 11.

[0085] Of course, the second joint 115 of another current collecting structure 11 can also be inserted into the first through hole 1131 of the first joint 113 of the current collecting structure 11, so as to connect the first joint 113 with the second joint 115 of another current collecting structure 11.

[0086] In some embodiments, as shown in Figure 5 and Figure 8 The first joint 113 can include a guide section 1137 extending from one end of the first joint 113 along the second direction Y to the current collector 110, and the outer diameter of the guide section 1137 gradually decreases along the second direction Y. Thus, when the first joint 113 is inserted into the second through hole 1152 of the second joint 115 of another current collecting structure 11 to connect the first joint 113 with the second joint 115 of another current collecting structure 11, the outer peripheral surface of the guide section 1137 can guide the insertion of the first joint 113 into the second through hole 1152 of the second joint 115 of another current collecting structure 11, so that the first joint 113 can be quickly and accurately inserted into the second through hole 1152 of the second joint 115 of another current collecting structure 11, thereby improving the connection efficiency of the two current collecting structures 11.

[0087] As shown in Figure 5 The first joint 113 can move relative to the current collector 110 in the radial direction of the first through hole 1131. The movement amount of the first joint 113 relative to the current collector 110 in the radial direction of the first through hole 1131 is λ. The difference between the maximum inscribed circle radius and the minimum inscribed circle radius of the guide section 1137 is X1. Wherein, X1≥0.5λ. Thus, the guiding effect of the guide section 1137 can be further improved, and the first joint 113 can be more quickly and accurately inserted into the second through hole 1152 of the second joint 115 of another current collecting structure 11.

[0088] Wherein, X1 can be 0.6λ, 0.68λ, 0.72λ, 0.8λ, 0.9λ, etc., and can be determined according to the size and shape of the first joint 113 and the first through hole 1131.

[0089] In addition, the second through hole 1152 can also include a guide hole section 1153 extending from one end of the second joint 115 away from the current collector 110 along the second direction Y, and the inner diameter of the guide hole section 1153 gradually decreases along the second direction Y. Thus, when the first joint 113 is inserted into the second through hole 1152 of the second joint 115 of another current collecting structure 11 to connect the first joint 113 with the second joint 115 of another current collecting structure 11, the inner peripheral surface of the guide hole section 1153 can guide the insertion of the first joint 113 into the second through hole 1152 of the second joint 115 of another current collecting structure 11, so that the first joint 113 can be quickly and accurately inserted into the second through hole 1152 of the second joint 115 of another current collecting structure 11, thereby improving the connection efficiency of the two current collecting structures 11.

[0090] As shown in Figure 5 , the difference between the maximum inscribed circle radius and the minimum inscribed circle radius of the guide hole section 1153 is X2, wherein X2-0.5λ≥0.5mm can be achieved. In this way, the guiding effect of the guide hole section 1153 can be further improved, so that during the assembly of the two current collecting structures 11, the first joint 113 of one of the current collecting structures 11 can be more quickly and accurately inserted into the second through hole 1152 of the second joint 115 of the other current collecting structure 11 after being subjected to the tooling force. Wherein, the value of X2-0.5λ can be 0.55mm, 0.62mm, 0.68mm, 0.72mm, 0.8mm, 0.9mm, etc., which can be determined according to the size and shape of the first joint 113 and the first through hole 1131.

[0091] It should be noted that the first joint 113 can include a guide section 1137, and the second through hole 1152 includes a guide hole section 1153, or only the first joint 113 includes a guide section 1137, or only the second through hole 1152 includes a guide hole section 1153. Of course, the former can make the first joint 113 more quickly and accurately inserted into the second through hole 1152 of the second joint 115 of the other current collecting structure 11.

[0092] In some embodiments, as shown in Figure 3 , Figure 5 and Figure 6 , a connecting structure 1112 can be provided on one side of the current collector 110 along the second direction Y, and the first joint 113 includes a connecting portion 1132, which is movably connected with the connecting structure 1112, so that the first joint 113 is movably installed on one side of the current collector 110 along the first direction X. A sealing ring 1141 is provided between the first joint 113 and the current collector 110, and the sealing ring 1141 is arranged around the first through hole 1131, and the first joint 113 and the current collector 110 clamp the sealing ring 1141 to form a sealed protection structure. In this way, while the position of the first joint 113 relative to the current collector 110 is adjustable, the temperature adjusting medium in the current collecting cavity 1110 and the first through hole 1131 will not leak out from the gap between the first joint 113 and the first plate body.

[0093] The material of the sealing ring 1141 can include Ethylene Propylene Diene Monomer (EPDM), Vinyl Methyl Quality (VMQ), Fluororubber (FKM), and the like. The material of the first joint 113 can include Polyphenylene sulfide (PPS), glass fiber reinforced nylon 66 (PA66+GF), Polyphthalamide (PPA), and the like.

[0094] In some embodiments, the first joint 113 can be movable relative to the connecting structure 1112 in the radial direction of the first through hole 1131. When the first joint 113 is connected to the second joint 115 of another current collecting structure 11 to communicate the second through hole 1152 with the first through hole 1131 of the other current collecting structure 11, if the first joint 113 and the second joint 115 of the other current collecting structure 11 are misaligned in the radial direction of the first through hole 1131, the first joint 113 can be moved relative to the connecting structure 1112 in the radial direction of the first through hole 1131 by a certain distance to align the first joint 113 with the second joint 115 of the other current collecting structure 11, so that the first joint 113 and the second joint 115 of the other current collecting structure 11 can be quickly and accurately connected together.

[0095] In addition, the first joint 113 can also be swingable relative to the connecting structure 1112 in the radial direction of the first through hole 1131. When the first joint 113 is connected to the second joint 115 of another current collecting structure 11 to communicate the second through hole 1152 with the first through hole 1131 of the other current collecting structure 11, if the first joint 113 and the second joint 115 of the other current collecting structure 11 are inclined at a certain angle in the radial direction of the first through hole 1131, the first joint 113 can be swung relative to the connecting structure 1112 in the radial direction of the first through hole 1131 by a certain angle to align the first joint 113 with the second joint 115 of the other current collecting structure 11, so that the first joint 113 and the second joint 115 of the other current collecting structure 11 can be quickly and accurately connected together.

[0096] In addition, the first joint 113 can move in the axial direction of the first through hole 1131 relative to the connecting structure 1112. When the first joint 113 is connected with the second joint 115 of the other current collecting structure 11, and the second through hole 1152 is communicated with the first through hole 1131 of the other current collecting structure 11, if the distance between the first joint 113 and the second joint 115 of the other current collecting structure 11 in the axial direction of the first through hole 1131 is relatively large, the first joint 113 and the second joint 115 of the other current collecting structure 11 can be quickly and accurately connected together by moving the first joint 113 in the axial direction of the first through hole 1131 relative to the connecting structure 1112 by a certain distance.

[0097] It should be noted that the first joint 113 can move in one or more of the above three movement modes relative to the connecting structure 1112, and the specific movement mode can be determined according to the accuracy requirement of the connection between the first joint 113 and the second joint 115 of the other current collecting structure 11.

[0098] In some embodiments, the connecting structure 1112 can include a limiting piece 1113 connected with the current collector 110, the limiting piece 1113 is located on the side of the connecting portion 1132 away from the current collector 110, and the limiting piece 1113 is used to abut against the side of the connecting portion 1132 away from the current collector 110 to clamp the sealing ring 1141 between the connecting portion 1132 and the current collector 110.

[0099] Therefore, the limiting piece 1113 can apply a pushing force to the connecting portion 1132 to clamp the connecting portion 1132 and the current collector 110 to the sealing ring 1141. In addition, the connecting portion 1132 can also move and swing in the radial direction of the first through hole 1131 of the first joint 113 relative to the connecting structure 1112, and can also move in the axial direction of the first through hole 1131 by a certain distance, so that the first joint 113 can move in the radial direction of the first through hole 1131 and swing relative to the connecting structure 1112, and move in the axial direction of the first through hole 1131.

[0100] In some embodiments, the connecting structure 1112 can further include a connecting protrusion 1115 protruding from the current collecting structure 11 on one side in the second direction Y, the connecting protrusion 1115 encloses a groove 1116, the bottom surface of the groove 1116 is provided with an interface 1119 communicated with the current collecting cavity 1110, the connecting portion 1132 is at least partially accommodated in the groove 1116, the first through hole 1131 is communicated with the interface 1119, and the limiting piece 1113 is connected with the connecting protrusion 1115, so that the connection between the limiting piece 1113 and the current collector 110 is more convenient, and the limiting piece 1113 can be located on the side of the connecting portion 1132 of the first joint 113 away from the current collector 110 to stably limit the connecting portion 1132.

[0101] The limiting member 1113 can be welded or bonded with the connecting protrusion 1115, so that the connecting strength of the limiting member 1113 and the connecting protrusion 1115 is higher, and the structure is simple. Of course, the limiting member 1113 can also be connected together with the connecting protrusion 1115 through screw fixing, clamping and other modes.

[0102] Specifically, the connecting protrusion 1115 is an annular protrusion arranged around the periphery of the first connector 113. The connecting portion 1132 is accommodated in the groove 1116 of the connecting protrusion 1115. In the axial direction of the first through hole 1131 of the first connector 113, the thickness of the connecting portion 1132 is smaller than the depth of the groove 1116. The limiting member 1113 is an annular plate structure arranged around the first connector 113. The outer edge of the limiting member 1113 is connected with the end of the connecting protrusion 1115 away from the current collector 110, and covers the groove 1116 formed by the connecting protrusion 1115.

[0103] In some embodiments, the limiting member 1113 can be arranged around the periphery of the first connector 113. In this way, the limiting member 1113 can have more area abutting against the surface of the connecting portion 1132 away from the current collector 110, so that the limiting member 1113 is more stable in abutting against the first connector 113.

[0104] In some embodiments, the limiting member 1113 can be arranged around the periphery of the first connector 113. In this way, the limiting member 1113 can have more area abutting against the surface of the connecting portion 1132 away from the current collector 110, so that the limiting member 1113 is more stable in abutting against the first connector 113.

[0105] In some embodiments, the outer diameter of the connecting portion 1132 can be greater than the inner diameter of the avoiding hole 1114. In this way, the limiting member 1113 can be more stable in abutting against the side of the connecting portion 1132 away from the current collector 110, and the connecting portion 1132 can be prevented from being pulled out of the avoiding hole 1114.

[0106] In some embodiments, the connecting portion 1132 can be located at the end of the first connector 113 close to the current collector 110, and the first through hole 1131 can pass through the connecting portion 1132. The sealing ring 1141 can be located between the connecting portion 1132 and the current collector 110, and the connecting portion 1132 and the current collector 110 can clamp the sealing ring 1141. By clamping the sealing ring 1141 between the connecting portion 1132 and the first plate body, the gap between the first connector 113 and the first plate body can be effectively sealed.

[0107] In some embodiments, the compression ratio of the sealing ring 1141 can be greater than or equal to 10% and less than or equal to 50%, so that the sealing ring 1141 has higher sealing effect and sealing stability.

[0108] In some embodiments, the compression ratio of the sealing ring 1141 can be greater than or equal to 15% and less than or equal to 30%, so that the sealing ring 1141 has better sealing effect and longer sealing time. By making the compression ratio of the sealing ring 1141 between 15% and 30% when the sealing ring 1141 is extruded by the first joint 113 and the current collector 110, the sealing ring 1141 can effectively seal the first joint 113 and the current collector 110 for a long time. The specific compression ratio of the sealing ring 1141 can be 18%, 20%, 23%, 26%, 29%, etc.

[0109] In some embodiments, the roughness Ra of the contact surface of the current collector 110 for contacting the sealing ring 1141 can be less than or equal to 0.8 μm, so that the sealing ring 1141 can more easily move with the first joint 113 relative to the current collector 110, thereby ensuring the sealing stability between the first joint 113 and the current collector 110 when the first joint 113 moves relative to the current collector 110. The roughness Ra of the contact surface of the current collector 110 for contacting the sealing ring 1141 can be 0.76 μm, 0.72 μm, 0.7 μm, 0.65 μm, 0.5 μm, 0.3 μm, etc.

[0110] In some embodiments, the limiting piece 1113 can be provided with a first clamping portion 1123 on the side away from the current collector 110, and the current collector 110 can be provided with a second clamping portion 1154 on the side away from the first joint 113, the second clamping portion 1154 being used to clamp with the first clamping portion 1123 of another current collecting structure 11, so as to limit the relative movement distance of the two current collecting structures 11 in the second direction Y. In this way, the connection between the first joint 113 and the second joint 115 of another current collecting structure 11 can be more stable, and the risk of the two current collecting structures 11 moving away from each other in the second direction Y can be reduced. Moreover, by providing the first clamping portion 1123 on the side of the limiting piece 1113 away from the current collector 110, the space occupied by the current collector 110 and the types of components can be reduced, which is conducive to improving the integration of the current collecting structure 11.

[0111] In some embodiments, the first clamping portion 1123 can include a first sub-clamping portion 1124, and the second clamping portion 1154 can include two first sub-clamping portions 1124 spaced apart along the second direction Y, the first sub-clamping portion 1124 being located between two second sub-clamping portions 1155, and the two second sub-clamping portions 1155 being configured to abut against the first sub-clamping portion 1124 to limit the relative movement distance of the two current collecting structures 11 in the second direction Y. In the second direction Y, the distance between the two second sub-clamping portions 1155 is greater than the width of the first sub-clamping portion 1124. In this way, the first sub-clamping portion 1124 can move a certain distance in the second direction Y between the two second sub-clamping portions 1155, which is beneficial to reduce the assembly accuracy requirement of the two current collecting structures 11 in the second direction Y.

[0112] In some embodiments, the distance by which the first sub-clamping portion 1124 can move in the second direction Y between the two second sub-clamping portions 1155 can be greater than or equal to 1 mm, i.e., the distance between the first sub-clamping portion 1124 and the two second sub-clamping portions 1155 in the second direction Y is a and b respectively, and a+b≥1 mm, thereby reducing the assembly accuracy requirement of the two current collecting structures 11 in the second direction Y.

[0113] The distance by which the first sub-clamping portion 1124 can move in the second direction Y between the two second sub-clamping portions 1155 can be specifically 1.5 mm, 2 mm, 2.2 mm, 2.7 mm, 3 mm, etc., which is not limited here.

[0114] Specifically, the number of the first clamping portions 1123 is two. The two first clamping portions 1123 are arranged along the circumference of the first through hole 1131. The number of the second clamping portions 1154 is two. The two second clamping portions 1154 are configured to clamp the two first clamping portions 1123 of the other current collecting structure 11 one by one to limit the relative movement distance of the two current collecting structures 11 in the second direction Y.

[0115] The first clamping portion 1123 includes a first protruding portion 1125 extending from the self-limiting member 1113 in the second direction Y, and the first sub-clamping portion 1124 is connected to one end of the first protruding portion 1125 in the second direction Y. The second clamping portion 1154 includes a second protruding portion 1156 extending from the second joint 115 or the current collector 110 in the second direction Y, one of the two second sub-clamping portions 1155 is located at the end of the second protruding portion 1156 away from the current collector 110, and the other second sub-clamping portion 1155 is located at the end of the second joint 115 away from the current collector 110.

[0116] In some embodiments, as shown in FIG. 1, the first clamping portion 1123 can include a first sub-clamping portion 1124, and the second clamping portion 1154 can include two first sub-clamping portions 1124 spaced apart along the second direction Y, the first sub-clamping portion 1124 being located between two second sub-clamping portions 1155, and the two second sub-clamping portions 1155 being configured to abut against the first sub-clamping portion 1124 to limit the relative movement distance of the two current collecting structures 11 in the second direction Y. In the second direction Y, the distance between the two second sub-clamping portions 1155 is greater than the width of the first sub-clamping portion 1124. In this way, the first sub-clamping portion 1124 can move a certain distance in the second direction Y between the two second sub-clamping portions 1155, which is beneficial to reduce the assembly accuracy requirement of the two current collecting structures 11 in the second direction Y. Figure 3As shown, the outer periphery of the limiting piece 1113 is further provided with a positioning part 1138, the current collector 110 is formed with a positioning groove 1139 on the side facing the first joint 113, the positioning part 1138 is inserted into the positioning groove 1139 to position the limiting piece 113, limit the rotation of the limiting piece 1113 relative to the current collector 110 around the first joint 113, and make the position of the limiting piece 1113 more stable, which is beneficial to improve the assembly and fixing efficiency of the limiting piece 1113.

[0117] The embodiment of the present application also provides a temperature adjusting assembly, which comprises a current collecting structure, and the specific structure of the current collecting structure is referred to the above embodiments. Since the temperature adjusting assembly adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0118] As shown in Figure 1 and Figure 2 , the temperature adjusting assembly 10 comprises a temperature adjusting plate 12 and a current collecting structure 11, the temperature adjusting plate 12 is provided with a flow channel 121, and the structure of the current collecting structure 11 can be referred to the above embodiments, which will not be repeated here. One end of the temperature adjusting plate 12 is connected with the current collector 110 of the current collecting structure 11, so that the flow channel 121 of the temperature adjusting plate 12 is in communication with the current collecting cavity 1110 of the current collector 110 of the current collecting structure 11.

[0119] The embodiment of the present application also provides a battery pack, which comprises a temperature adjusting assembly, and the specific structure of the temperature adjusting assembly is referred to the above embodiments. Since the battery pack adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0120] As shown in Figure 1 , the battery pack 1 comprises a battery cell assembly 2 and a temperature adjusting assembly 10, the battery cell assembly 2 comprises a plurality of rows of battery cells 20, and the temperature adjusting plate 12 of the temperature adjusting assembly 10 is arranged between two adjacent rows of battery cells 20.

[0121] The above has introduced the embodiments of the present application in detail, and the principle and implementation mode of the present application have been described by applying specific examples; the above embodiment is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A current collection structure, characterized in that, include: A current collector includes a current collection cavity, and one end of the current collector along a first direction has an opening communicating with the current collection cavity; A connector, comprising a channel extending along the first direction, and including a first end and a second end distributed along the first direction, wherein the first end is inserted into the end of the current collector having the opening, so that the current collector cavity communicates with the channel; and the second end is used to connect to a temperature regulating plate, so that the channel communicates with the flow channel within the temperature regulating plate. The current collector is provided with a first limiting part, and the connector is provided with a first abutting part. The first limiting part is located on one side of the first abutting part along the first direction. The first limiting part is used to abut against the first abutting part to restrict the connector from moving relative to the current collector along the first direction.

2. The current collection structure as described in claim 1, characterized in that, The first end is inserted into the opening so that the first end is connected to the end of the current collector that has the opening. The first limiting part protrudes from the inner peripheral surface of the current collector cavity, and the first abutting part protrudes from the outer peripheral surface of the connector. or The end of the current collector with the opening is inserted into the channel so that the first end is connected to the end of the current collector with the opening. The first limiting part protrudes from the outer peripheral surface of the current collector, and the first abutting part protrudes from the inner peripheral surface of the channel.

3. The current collection structure as described in claim 2, characterized in that, The first abutting portion extends circumferentially along the opening; and / or, the first limiting portion extends circumferentially along the opening.

4. The current collection structure as described in claim 1, characterized in that, The connector is provided with a second abutting portion, which is located on one side of the first limiting portion along the first direction. The first limiting portion abuts against the second abutting portion to restrict the connector from moving in the opposite direction relative to the collector in the first direction; or, The current collector is provided with a second limiting part, and the first abutting part is located on one side of the second limiting part along the first direction. The second limiting part is used to abut against the first abutting part to restrict the reverse movement of the connecting member relative to the current collector in the first direction.

5. The current collection structure as described in claim 1, characterized in that, The manifold and the connector are injection molded together; or, the manifold and the connector are bonded together.

6. The current collection structure as described in any one of claims 1 to 5, characterized in that, The current collection structure also includes: A first connector is movably installed on one side of the current collector along the second direction. The first connector includes a first through hole communicating with the current collector cavity. The second direction forms an angle with the first direction. The second connector is located on the side of the current collector opposite to the first connector. The second connector includes a second through hole communicating with the current collector. The second connector is used to connect to the first connector of another current collector structure so that the second through hole communicates with the first through hole of the other current collector structure.

7. The current collection structure as described in claim 6, characterized in that, The first connector includes a guide section extending from one end of the first connector along the second direction toward the current collector, the circumscribed circle diameter of the guide section gradually decreasing along the second direction; and / or, The second through hole includes a guide hole section that extends from the end of the second connector away from the current collector along the second direction, and the inner diameter of the guide hole section gradually decreases along the second direction.

8. The current collection structure as described in claim 7, characterized in that, The first connector can move radially relative to the current collector in the first through hole, and the amount of movement of the first connector relative to the current collector in the first through hole in the first through hole is λ. The difference between the maximum and minimum circumscribed circle radii of the guide segment is X1, where X1 ≥ 0.5λ; and / or, The difference between the maximum and minimum inscribed circle radii of the guide hole section is X2, where X2-0.5λ≥0.5mm.

9. The current collection structure as described in claim 6, characterized in that, The current collector has a connecting structure on one side along the second direction. 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 current collector. The sealing ring surrounds the first through hole. The first connector and the current collector clamp the sealing ring to form a sealing and protective structure.

10. The current collection structure as described in claim 9, 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.

11. The current collection structure as described in claim 10, characterized in that, The connection structure includes a limiting member connected to the manifold. The limiting member is located on the side of the connection portion away from the manifold. The limiting member is used to abut against the side of the connection portion away from the manifold so that the connection portion and the manifold clamp the sealing ring.

12. The current collection structure as described in claim 11, characterized in that, The connecting structure further includes a connecting protrusion protruding from one side of the flow collection structure along the second direction. The connecting protrusion surrounds and forms a groove. The bottom surface of the groove has an interface communicating with the flow 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.

13. The current collection structure as described in claim 12, 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; and the outer diameter of the connecting portion is larger than the inner diameter of the clearance hole.

14. The current collection structure as described in claim 11, characterized in that, The limiting member has a first locking part on the side away from the current collector, and the current collector has a second locking part on the side away from the first connector. The second locking part is used to lock with the first locking part of another current collector structure to limit the relative movement distance of the two current collector structures in the second direction.

15. The current collection structure as described in claim 14, characterized in that, The first latching portion includes a first sub-latching portion, and the second latching portion includes two first sub-latching portions spaced apart along the second direction. The first sub-latching portions are located between the two second sub-latching portions, and the two second sub-latching portions are used to abut against the first sub-latching portions to limit the relative movement distance of the two current collection structures in the second direction. In the second direction, the distance between the two second sub-clamping portions is greater than the width of the first sub-clamping portion.

16. The current collection structure as described in claim 9, characterized in that, The connecting part is located at the end of the first connector near the current collector, and the first through hole penetrates the connecting part; the sealing ring is located between the connecting part and the current collector, and the connecting part and the current collector clamp the sealing ring.

17. The current collection structure as described in claim 9, characterized in that, The compression ratio of the sealing ring is greater than or equal to 10% and less than or equal to 50%.

18. The current collection structure as described in claim 17, characterized in that, The compression ratio of the sealing ring is greater than or equal to 15% and less than or equal to 30%.

19. 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 18, wherein one end of the temperature regulating plate is connected to the second end of the connector of the flow collection structure so that the channel of the connector is connected to the flow channel in the temperature regulating plate.

20. 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 19, and the temperature regulating plate of the temperature regulating component is disposed between two adjacent rows of the battery cells.

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