Battery connection structure and battery module

Abstract

The utility model relates to a battery connecting structure and a battery module, a connecting piece in the battery connecting structure is provided with a first connecting section, the first connecting section is provided with a first through hole, and a first limiting part is arranged in the first through hole; the busbar is provided with a second connecting section, and the second connecting section is arranged on one side face of the first connecting section; a second through hole is formed in the second connecting section, and a second limiting part is arranged in the second through hole; the locking piece penetrates through the first through hole and the second through hole, the first limiting part limits the first side edge of the locking piece, and the second limiting part limits the second side edge of the locking piece, so that the connecting piece and the busbar are locked and limited, and when the connecting piece and the busbar are connected through a bolt, the assembling convenience between the connecting piece and the busbar is high; relative position control between the connecting piece and the busbar is achieved, the position degree of assembly is guaranteed, back-twist failure caused by interference of matching pieces is avoided, and the cost of the connecting structure is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery connection structure and a battery module. Background Art

[0002] With the development of battery technology, the application fields of batteries are becoming more and more extensive. Batteries are divided into single-cell batteries and multi-cell batteries. In the manufacture of multi-cell batteries, multiple cells need to be connected in series and / or in parallel to form a battery module, and then put into use; and multiple battery modules can be connected in series and / or in parallel to form a battery pack. When the space in the battery pack is limited, it is usually necessary to improve the connection between the connector and the busbar to meet the space requirements.

[0003] At present, in the existing battery connection structure of the battery module, for example, the connector and the busbar are provided with through holes and are connected by bolts to realize the electrical connection between the battery module and the battery module or the external device. When the connector and the busbar are locked, the relative position of the connector and the busbar is easily affected by the through hole and the bolt diameter, and there is a possibility of not meeting the assembly position, causing interference with the mating parts, resulting in back-twist failure. Utility Model Content

[0004] Based on this, it is necessary to provide a low-cost battery connection structure and battery module that can facilitate the assembly of the connecting parts and the busbars when the connecting parts and the busbars are connected by bolts, while ensuring the positioning of the assembly and avoiding back-twisting failure caused by interference from mating parts.

[0005] In a first aspect, the present application provides a battery connection structure, comprising:

[0006] A connecting member, wherein the connecting member is provided with a first connecting section, the first connecting section is provided with a first through hole, and a first limiting portion is provided in the first through hole;

[0007] The busbar is provided with a second connecting section, which is arranged on a side of the first connecting section; the second connecting section is provided with a second through hole matching the first through hole, and a second limiting portion is arranged in the second through hole;

[0008] The locking member includes a first side and a second side opposite to each other. The locking member passes through the first through hole and the second through hole. The first limiting portion limits the first side of the locking member, and the second limiting portion limits the second side of the locking member, so as to lock and limit the connection member and the bus.

[0009] In one embodiment, a straight line passing through the center point of the first limiting portion and perpendicular to the central axis of the locking member is a first straight line, and a straight line passing through the center point of the second limiting portion and perpendicular to the central axis of the locking member is a second straight line; the first straight line is parallel to the second straight line.

[0010] In one embodiment, the first limiting portion is provided with at least one first protrusion; the second limiting portion is provided with at least one second protrusion;

[0011] The first protrusion is used to limit the first side edge of the locking member; the second protrusion is used to limit the second side edge of the locking member.

[0012] In one embodiment, the first protrusion is a long strip protrusion; the second protrusion is a long strip protrusion.

[0013] In one embodiment, the first inner diameter of the first through hole is greater than the diameter of the locking member and less than the first preset value; the first inner diameter of the second through hole is greater than the diameter of the locking member and less than the second preset value; the first inner diameter is the inner diameter passing through the center point of the first limiting portion; and the second inner diameter is the inner diameter passing through the center point of the second limiting portion.

[0014] In one embodiment, the third inner diameter of the first through hole is greater than or equal to the sum of the first inner diameter and the thickness of the first limiting portion; the fourth inner diameter of the second through hole is greater than or equal to the sum of the second inner diameter and the thickness of the second limiting portion; the third inner diameter is the longest inner diameter of the first through hole, and the fourth inner diameter is the longest inner diameter of the second through hole.

[0015] In one embodiment, the first inner diameter is equal to the second inner diameter; and the third inner diameter is equal to the fourth inner diameter.

[0016] In one of the embodiments, the connector further includes a third connecting segment; the third connecting segment is fixedly connected to the first connecting segment, and the third connecting segment is used to connect the battery cell pole.

[0017] In one embodiment, the third connection section includes a pole connection section and a support connection section;

[0018] The first end of the support connection section is vertically arranged with the pole connection section, and the second end of the support connection section is vertically arranged with the first connection section; the pole connection section is connected with the battery cell pole.

[0019] In a second aspect, the present application provides a battery module, including a battery module body and a battery connection structure as described above, wherein the battery connection structure is arranged on the battery module body.

[0020] One of the above technical solutions has the following advantages and beneficial effects:

[0021] The above-mentioned battery connection structure includes a connecting member, a bus and a locking member; the connecting member is provided with a first connecting section, the first connecting section is provided with a first through hole, and a first limiting portion is provided in the first through hole; the bus is provided with a second connecting section, and the second connecting section is provided on a side surface of the first connecting section; the second connecting section is provided with a second through hole matching the first through hole, and a second limiting portion is provided in the second through hole; the locking member includes a first side edge and a second side edge relative to each other, the locking member passes through the first through hole and the second through hole, and the first limiting portion limits the first side edge of the locking member, and the second limiting portion limits the second side edge of the locking member, so as to lock and limit the connecting member and the bus, thereby realizing that when the connecting member and the bus are connected by bolts, the assembly convenience between the connecting member and the bus is high. The present application optimizes the connection structure between the connector and the bus, and provides a first through hole in the first connecting section of the connector, and a second through hole in the second connecting section of the bus, and a first limiting portion and a second limiting portion are provided in the first through hole and the second through hole respectively. When the connector and the bus are locked and assembled, the locking member is passed through the first through hole and the second through hole, and the first limiting portion can limit the first side edge of the locking member, and the second limiting portion can limit the second side edge of the locking member, thereby realizing relative position control between the connector and the bus, thereby improving the assembly convenience between the connector and the bus, ensuring the assembly positioning, avoiding back-twist failure caused by interference from mating parts, and reducing the cost of the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a battery connection structure from a first perspective in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the battery connection structure from a second viewing angle in an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the exploded structure of the battery connection structure in the embodiment of the present application;

[0025] Figure 4 Schematic diagram of the cross-sectional structure of the battery connection structure in the embodiment of the present application.

[0026] Reference numerals:

[0027] 10. Connecting piece; 110. First connecting section; 120. First through hole; 130. First limiting portion; 140. Third connecting section; 142. Pole connecting section; 144. Support connecting section; 20. Bus; 210. Second connecting section; 220. Second through hole; 230. Second limiting portion; 30. Locking piece. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0032] In addition, the term "plurality" shall mean two or more.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In one embodiment, Figures 1 to 3As shown, a battery connection structure is provided, which includes a connector 10, a bus 20 and a locking member 30; the connector 10 is provided with a first connecting section 110, the first connecting section 110 is provided with a first through hole 120, and a first limiting portion 130 is provided in the first through hole 120; the bus 20 is provided with a second connecting section 210, and the second connecting section 210 is provided on a side surface of the first connecting section 110; the second connecting section 210 is provided with a second through hole 220 matching the first through hole 120, and a second limiting portion 230 is provided in the second through hole 220; the locking member 30 passes through the first through hole 120 and the second through hole 220, and the first limiting portion 130 limits the first side edge of the locking member 30, and the second limiting portion 230 limits the second side edge of the locking member 30, so as to lock and limit the connector 10 and the bus 20; the first side edge of the locking member 30 is opposite to the second side edge of the locking member 30.

[0035] Among them, the connector 10 refers to an electrical connector used to connect the battery cell pole and the bus 20 in the battery module. For example, the connector 10 can be a connector corresponding to the positive output pole of the battery or a connector corresponding to the negative output pole of the battery. By connecting the connector 10 between the battery cell pole and the bus 20 in the battery module, the electrical connection between the battery module and the battery module or the external device can be achieved. Exemplarily, the battery module may include at least one column of battery cell groups, and the battery cell group may be composed of several batteries connected in series and / or in parallel. The battery module is provided with a battery cell pole, and the battery cell pole is electrically connected to the output pole 10 of the battery module.

[0036] For example, the connector 10 can be an output pole made of copper or aluminum. It should be noted that the connector 10 can also be an output pole made of a composite metal material based on conductive properties. The connector 10 is provided with a first connecting section 110, and the first connecting section 110 is a plate-shaped structure as a whole. The first connecting section 110 is provided with a first through hole 120, and the first through hole 120 can be a circular through hole; a first limiting portion 130 is provided in the first through hole 120, and the first limiting portion 130 and the inner wall of the first through hole 120 form a non-circular inner hole, and the locking member 30 can pass through the non-circular inner hole.

[0037] The busbar 20 can be used to electrically connect another battery module; in one example, the busbar 20 can also be used to electrically connect an external device. The busbar 20 can be a connector made of copper or aluminum. It should be noted that the busbar 20 can also be a connector made of a composite metal material based on conductive properties. The busbar 20 is provided with a second connecting section 210, and the second connecting section 210 is a plate-like structure as a whole. The second connecting section 210 is provided with a second through hole 220. When the second connecting section 210 is provided on a side of the first connecting section 110, the second through hole 220 of the second connecting section 210 corresponds to the first through hole 120 of the first connecting section 110. The second through hole 220 can be a circular through hole; a second limiting portion 230 is provided in the second through hole 220, and the second limiting portion 230 and the inner wall of the second through hole 220 enclose a non-circular inner hole, and the locking member 30 can pass through the non-circular inner hole.

[0038] The locking member 30 can be a bolt, the first side of the locking member 30 refers to the first side of the shaft of the locking member 30, and the second side of the locking member 30 refers to the second side of the shaft of the locking member 30. For example, the shaft of the locking member 30 is cylindrical, and the first side of the locking member 30 is opposite to the second side of the locking member 30. By fitting the second connecting section 210 of the bus 20 onto the first connecting section 110 of the connector 10, the first through hole 120 of the first connecting section 110 is connected to the second through hole 220 of the second connecting section 210 in correspondence, and the locking member 30 is passed through the first through hole 120 and the second through hole 220. The first limiting portion 130 can limit the first side of the locking member 30, and the second limiting portion 230 can limit the second side of the locking member 30, thereby realizing the relative position control of the connector 10 and the bus 20 when they are locked, ensuring good assembly convenience and having good assembly position accuracy; by locking the locking member 30, the locking and limiting between the connector 10 and the bus 20 is realized.

[0039] In the above embodiment, the connector 10 is provided with a first connecting section 110, the first connecting section 110 is provided with a first through hole 120, and a first limiting portion 130 is provided in the first through hole 120; the bus 20 is provided with a second connecting section 210, and the second connecting section 210 is provided on a side of the first connecting section 110; the second connecting section 210 is provided with a second through hole 220 matching the first through hole 120, and a second limiting portion 230 is provided in the second through hole 220 The locking member 30 passes through the first through hole 120 and the second through hole 220, and the first limiting portion 130 limits the first side of the locking member 30, and the second limiting portion 230 limits the second side of the locking member 30, so as to lock and limit the connection member 10 and the bus 20; the first side of the locking member 30 is opposite to the second side of the locking member 30, so that when the connection member 10 and the bus 20 are connected by bolts, the assembly convenience between the connection member 10 and the bus 20 is high. The present application optimizes the connection structure between the connector 10 and the bus 20, and provides a first through hole 120 in the first connecting section 110 of the connector 10, and provides a second through hole 220 in the second connecting section 210 of the bus 20, and the first through hole 120 and the second through hole 220 are respectively provided with a first limiting portion 130 and a second limiting portion 230, so that when the connector 10 and the bus 20 are locked and assembled, the locking member 30 is passed through the first through hole 120 and the second through hole 220, and the first limiting portion 130 can limit the first side edge of the locking member 30, and the second limiting portion 230 can limit the second side edge of the locking member 30, so as to control the relative position between the connector 10 and the bus 20, thereby improving the assembly convenience between the connector 10 and the bus 20, while ensuring the assembly position, avoiding the interference of the mating parts and causing the back-twist failure, and reducing the cost of the connection structure.

[0040] In one embodiment, Figure 4 As shown, the straight line passing through the center point of the first limiting portion 130 and perpendicular to the central axis of the locking member 30 is the first straight line, and the straight line passing through the center point of the second limiting portion 230 and perpendicular to the central axis of the locking member 30 is the second straight line; the first straight line is parallel to the second straight line.

[0041] The second connecting section 210 of the bus 20 is attached to the first connecting section 110 of the connector 10, and the second through hole 220 is connected to the first through hole 120. When the locking member 30 passes through the second through hole 220 and the first through hole 120, the first limiting portion 130 limits the first side of the locking member 30, and the second limiting portion 230 limits the second side of the locking member 30. The straight line from the center point of the first limiting portion 130 to the center point of the second limiting portion 230 intersects with the central axis of the locking member 30, that is, the first limiting portion 130 passes through the center point of the first limiting portion 130 and is perpendicular to the central axis of the locking member 30. The straight line is parallel to a second straight line passing through the center point of the second limiting portion 230 and perpendicular to the center axis of the locking member 30. When the connector 10 and the bus 20 are locked and assembled, the first limiting portion 130 can limit the first side of the locking member 30, and the second limiting portion 230 can limit the second side of the locking member 30, thereby achieving relative position control between the connector 10 and the bus 20, thereby improving the assembly convenience between the connector 10 and the bus 20, while ensuring the positioning of the assembly, avoiding back-twisting failure caused by interference from mating parts, and reducing the cost of the connection structure.

[0042] In one embodiment, the first limiting portion 130 is provided with at least one first protrusion; the second limiting portion 230 is provided with at least one second protrusion; the first protrusion is used to limit the first side edge of the locking member 30; the second protrusion is used to limit the second side edge of the locking member 30.

[0043] The first protrusion may be used to limit the first side of the locking member 30 , and the second protrusion may be used to limit the second side of the locking member 30 .

[0044] The first limiting portion 130 may be provided with a first protrusion, and illustratively, the first protrusion is a long strip-shaped protrusion. The second limiting portion 230 may be provided with a second protrusion, and illustratively, the second protrusion may be a long strip-shaped protrusion.

[0045] In one example, the first position limiting portion 130 may be provided with two or more first protrusions, and the second position limiting portion 230 may be provided with two or more second protrusions. The first protrusion may be an arc-shaped protrusion, and the second protrusion may be an arc-shaped protrusion.

[0046] Based on the first protrusion being set on the first limiting portion 130 and the second protrusion being set on the second limiting portion 230, when the connecting member 10 and the bus 20 are locked and assembled, the locking member 30 is passed through the first through hole 120 and the second through hole 220, and the first protrusion in the first limiting portion 130 can limit the first side edge of the locking member 30, and the second protrusion in the second limiting portion 230 can limit the second side edge of the locking member 30, thereby realizing the relative position control between the connecting member 10 and the bus 20, thereby improving the assembly convenience between the connecting member 10 and the bus 20, while ensuring the assembly position, avoiding the interference of the mating parts and causing back-twisting failure, and reducing the cost of the connection structure.

[0047] In one embodiment, the first inner diameter of the first through hole 120 is greater than the diameter of the locking member 30 and less than the first preset value; the first inner diameter of the second through hole 220 is greater than the diameter of the locking member 30 and less than the second preset value; the first inner diameter is the inner diameter passing through the center point of the first limiting portion 130; the second inner diameter is the inner diameter passing through the center point of the second limiting portion 230.

[0048] The shaft of the locking member 30 is cylindrical, and the diameter of the locking member 30 refers to the diameter of the shaft of the locking member 30. For example, the locking member 30 is a bolt or a screw. The first inner diameter of the first through hole 120 refers to the shortest inner diameter in the first through hole 120 passing through the first limiting portion 130. The first inner diameter of the second through hole 220 refers to the shortest inner diameter in the second through hole 220 passing through the second limiting portion 230.

[0049] By setting the first inner diameter of the first through hole 120 to be larger than the diameter of the locking member 30, and the second inner diameter of the second through hole 220 to be larger than the diameter of the locking member 30, the locking member 30 can pass through the first through hole 120 and the second through hole 220; by setting the first inner diameter of the first through hole 120 to be smaller than the first preset value, and the first inner diameter of the second through hole 220 to be smaller than the second preset value, the first limiting portion 130 can limit the first side edge of the locking member 30, and the second limiting portion 230 can limit the second side edge of the locking member 30, thereby realizing the relative position control between the connecting member 10 and the bus 20, thereby improving the assembly convenience between the connecting member 10 and the bus 20, and ensuring the assembly position accuracy at the same time.

[0050] In one embodiment, the third inner diameter of the first through hole 120 is greater than or equal to the sum of the first inner diameter and the thickness of the first limiting portion 130; the fourth inner diameter of the second through hole 220 is greater than or equal to the sum of the second inner diameter and the thickness of the second limiting portion 230; the third inner diameter is the longest inner diameter of the first through hole 120, and the fourth inner diameter is the longest inner diameter of the second through hole 220.

[0051] The thickness of the first limiting portion 130 refers to the longest distance that the first limiting portion 130 protrudes from the inner wall of the first through hole 120 . The thickness of the second limiting portion 230 refers to the longest distance that the second limiting portion 230 protrudes from the inner wall of the second through hole 220 .

[0052] For example, assuming that the first inner diameter is A, the second inner diameter is B, the third inner diameter is C, the fourth inner diameter is D, the thickness of the first limiting portion 130 is X, and the thickness of the second limiting portion 230 is Y, then C=A+X; D=B+Y.

[0053] By setting the third inner diameter of the first through hole 120 and the fourth inner diameter of the second through hole 220, the third inner diameter of the first through hole 120 is larger than the first inner diameter of the first through hole 120, and the fourth inner diameter of the second through hole 220 is larger than the third inner diameter of the second through hole 220. When the connector 10 and the bus 20 are locked and assembled, the locking member 30 is passed through the first through hole 120 and the second through hole 220, and the first limiting portion 130 can limit the first side of the locking member 30, and the second limiting portion 230 can limit the second side of the locking member 30, so as to control the relative position between the connector 10 and the bus 20. In addition, since the third inner diameter of the first through hole 120 and the fourth inner diameter of the second through hole 220 are relatively large, the assembly convenience between the connector 10 and the bus 20 is improved, and the assembly position is guaranteed at the same time, the interference of the mating parts and the resulting back-twist failure are avoided, and the cost of the connection structure is reduced.

[0054] In one embodiment, the first inner diameter is equal to the second inner diameter; and the third inner diameter is equal to the fourth inner diameter.

[0055] By setting the first inner diameter of the first through hole 120 to be the same as the second inner diameter of the second through hole 220, and the third inner diameter of the first through hole 120 to be the same as the fourth inner diameter of the second through hole 220, the size of the first through hole 120 is made to be box-shaped with the size of the second through hole 220, and the size of the first limiting portion 130 is made the same as the size of the second limiting portion 230. Therefore, when the connector 10 and the bus 20 are locked and assembled, the locking member 30 can pass through the first through hole 120 and the second through hole 220 more smoothly, the first limiting portion 130 can limit the first side of the locking member 30, and the second limiting portion 230 can limit the second side of the locking member 30, thereby realizing the relative position control between the connector 10 and the bus 20, thereby further improving the assembly convenience between the connector 10 and the bus 20, and at the same time ensuring the assembly position.

[0056] In one embodiment, Figure 3 and Figure 4As shown, the connector 10 further includes a third connecting segment 140 ; ​​the third connecting segment 140 is fixedly connected to the first connecting segment 110 , and the third connecting segment 140 is used to connect to the battery cell pole.

[0057] The third connecting section 140 can be used to electrically connect the battery cell poles, and the third connecting section 140 and the first connecting section 110 are an integrally formed structure.

[0058] Based on the connection between the third connecting section 140 and the battery cell pole, the third connecting point is fixedly connected to the first connecting section 110, the locking member 30 passes through the first through hole 120 and the second through hole 220, and the connecting member 10 and the bus 20 are connected by bolts. The bus 20 is connected to an external device or another battery module, thereby realizing the electrical connection between the battery module and the battery module or the external device.

[0059] In one embodiment, Figure 4 As shown, the third connecting section 140 includes a pole connecting section 142 and a supporting connecting section 144; the first end of the supporting connecting section 144 is vertically arranged with the pole connecting section 142, and the second end of the supporting connecting section 144 is vertically arranged with the first connecting section 110; the pole connecting section 142 is connected to the battery cell pole.

[0060] Among them, the pole connecting section 142, the support connecting section 144 and the first connecting section 110 are an integrally formed structure. The support connecting section 144 is perpendicular to the pole connecting section 142 and the first connecting section 110, respectively. Based on the pole connecting section 142, the battery cell connects the battery cell pole, the first connecting section 110 is electrically connected to the second connecting section 210 of the bus 20 through the locking member 30, and the bus 20 is connected to an external device or another battery module, thereby realizing the electrical connection between the battery module and the battery module or the external device.

[0061] In one embodiment, a battery module is further provided, comprising a battery module body and any one of the battery connection structures described above, wherein the battery connection structure is disposed on the battery module body.

[0062] The battery module may be a battery module with a single row of battery cells, or a battery module with a double row or multiple row of battery cells.

[0063] The battery connection structure is arranged on the battery module body, the connecting member is provided with a first connecting section, the first connecting section is provided with a first through hole, and a first limiting portion is provided in the first through hole; the bus is provided with a second connecting section, and the second connecting section is provided in the first connecting section; the second connecting section is provided with a second through hole corresponding to the first through hole, and a second limiting portion is provided in the second through hole; the locking member passes through the first through hole and the second through hole, and the first limiting portion limits the first side edge of the locking member, and the second limiting portion limits the second side edge of the locking member, so as to lock and limit the connecting member and the bus; the first side edge of the locking member is opposite to the second side edge of the locking member, so as to realize that when the connecting member and the bus are connected by bolts, the assembly convenience between the connecting member and the bus is high. The present application optimizes the connection structure between the connector and the bus, and provides a first through hole in the first connecting section of the connector, and a second through hole in the second connecting section of the bus, and a first limiting portion and a second limiting portion are respectively provided in the first through hole and the second through hole. When the connector and the bus are locked and assembled, the locking member is passed through the first through hole and the second through hole, and the first limiting portion can limit the first side edge of the locking member, and the second limiting portion can limit the second side edge of the locking member, thereby realizing relative position control between the connector and the bus, thereby improving the assembly convenience between the connector and the bus, ensuring the assembly positioning, avoiding back-twist failure caused by interference from mating parts, and reducing the cost of the connection structure.

[0064] It should be noted that the battery module may also include components such as a heat insulation plate, and a specific battery module may include more components than those described in the above embodiments, or combine certain components, or have a different arrangement of components.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A battery connection structure, characterized in that: include: A connecting member, wherein the connecting member is provided with a first connecting section, the first connecting section is provided with a first through hole, and a first limiting portion is provided in the first through hole; A busbar, wherein the busbar is provided with a second connecting section, the second connecting section is provided on a side surface of the first connecting section; the second connecting section is provided with a second through hole matching the first through hole, and a second limiting portion is provided in the second through hole; The locking member includes a first side and a second side opposite to each other. The locking member passes through the first through hole and the second through hole, and the first limiting portion limits the first side of the locking member, and the second limiting portion limits the second side of the locking member, so as to lock and limit the connection member and the bus.

2. The battery connection structure according to claim 1, characterized in that: A straight line passing through the center point of the first limiting portion and perpendicular to the central axis of the locking member is a first straight line, and a straight line passing through the center point of the second limiting portion and perpendicular to the central axis of the locking member is a second straight line; the first straight line is parallel to the second straight line.

3. The battery connection structure according to claim 1, characterized in that: The first limiting portion is provided with at least one first protrusion; the second limiting portion is provided with at least one second protrusion; The first protrusion is used to limit the first side edge of the locking member; the second protrusion is used to limit the second side edge of the locking member.

4. The battery connection structure according to claim 3, characterized in that: The first protrusion is a long strip protrusion; the second protrusion is a long strip protrusion.

5. The battery connection structure according to claim 1, characterized in that: The first inner diameter of the first through hole is greater than the diameter of the locking piece and less than a first preset value; the second inner diameter of the second through hole is greater than the diameter of the locking piece and less than a second preset value; the first inner diameter is the inner diameter passing through the center point of the first limiting portion; the second inner diameter is the inner diameter passing through the center point of the second limiting portion.

6. The battery connection structure according to claim 5, characterized in that: The third inner diameter of the first through hole is greater than or equal to the sum of the first inner diameter and the thickness of the first limiting portion; the fourth inner diameter of the second through hole is greater than or equal to the sum of the second inner diameter and the thickness of the second limiting portion; the third inner diameter is the longest inner diameter of the first through hole, and the fourth inner diameter is the longest inner diameter of the second through hole.

7. The battery connection structure according to claim 6, characterized in that: The first inner diameter is equal to the second inner diameter; the third inner diameter is equal to the fourth inner diameter.

8. The battery connection structure according to claim 1, characterized in that: The connecting member also includes a third connecting section; the third connecting section is fixedly connected to the first connecting section, and the third connecting section is used to connect the battery cell pole.

9. The battery connection structure according to claim 8, characterized in that: The third connection section includes a pole connection section and a support connection section; The first end of the support connection section is perpendicular to the pole connection section, and the second end of the support connection section is perpendicular to the first connection section; the pole connection section is connected to the battery cell pole.

10. A battery module, characterized in that: It comprises a battery module body and a battery connection structure as claimed in any one of claims 1 to 9, wherein the battery connection structure is arranged on the battery module body.

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