Electrical connector, battery and electrical device

Abstract

This application relates to an electrical connector, a battery, and an electrical device, specifically in the field of battery technology. The electrical connector includes a first connecting portion, a second connecting portion, a fusible portion, and a first bending portion. The first connecting portion is electrically connected to a terminal post; the second connecting portion is electrically connected to a tab, and the second connecting portion and the first connecting portion are spaced apart along a first direction; the fusible portion connects the first connecting portion and the second connecting portion, and a notch region is formed on at least one side of the fusible portion along a second direction; the first bending portion is located within the notch region and is connected to the second connecting portion, with the first bending portion bent relative to the second connecting portion, and one end of the first bending portion away from the second connecting portion protruding from the surface of the first connecting portion. This electrical connector, battery, and electrical device can prevent misaligned tabs from contacting the first connecting portion after the fusible portion is broken, avoiding reconnection of the battery circuit, eliminating safety hazards, and extending the battery's lifespan.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to an electrical connector, a battery, and an electrical device. Background Technology

[0002] In batteries, electrical connectors connect the terminals and the tabs of the battery cell. These connectors typically have a fuse structure (fusible link). When a short circuit occurs in the battery, the fuse melts, breaking the current path between the tabs and the terminals, thus protecting the battery. In related technologies, some tabs on the battery cell may shift out of position, extending beyond the fuse. This results in the following: after the fuse melts, the portion of the connector connecting the terminal and the portion connecting the tab are disconnected. However, the shifted tab may extend beyond the fuse and contact the portion of the connector connecting the terminal, causing the battery circuit to reconnect. This poses a safety hazard and affects battery lifespan. Utility Model Content

[0003] To address the aforementioned technical problems, embodiments of this application provide an electrical connector, a battery, and an electrical device that can prevent misaligned tabs from contacting the first connection portion after the fuse is broken, thereby avoiding reconnection of the battery circuit, eliminating safety hazards, and extending the battery's lifespan.

[0004] In a first aspect, an electrical connector is provided for electrically connecting a terminal post and a terminal lug, the electrical connector comprising:

[0005] The first connecting part is used for electrical connection with the electrode post;

[0006] The second connecting portion is used for electrical connection with the electrode tab and is distributed at intervals from the first connecting portion along the first direction;

[0007] A fusible portion connects the first connecting portion and the second connecting portion. The length of the fusible portion along the second direction is less than the lengths of the first connecting portion and the second connecting portion along the second direction, respectively. A notch region is formed on at least one side of the fusible portion along the second direction.

[0008] A first bending portion is located within the notch area. The first bending portion is connected to the second connecting portion. The first bending portion is bent relative to the second connecting portion. One end of the first bending portion away from the second connecting portion protrudes from the surface of the first connecting portion.

[0009] Wherein, the first direction is perpendicular to the second direction.

[0010] According to a first aspect of this application, a plurality of first bends are provided in the same notch area, and the plurality of first bends are distributed at intervals along the second direction.

[0011] According to a first aspect of this application, the bending angles of the plurality of first bending portions are the same.

[0012] According to a first aspect of this application, the bending angle of the first bending portion is A, wherein A satisfies: 90°≤A≤165°; wherein the bending angle of the first bending portion represents the included angle between the surfaces of the first bending portion and the second connecting portion.

[0013] According to a first aspect of this application, the first bending portion in the notch area on both sides of the fuse portion is symmetrically arranged with respect to the fuse portion.

[0014] According to a first aspect of this application, the electrical connector further includes:

[0015] A second bend is provided in the notch area, the second bend is connected to the second connecting part, and the bending direction of the second bend is opposite to that of the first bend.

[0016] Secondly, a battery is also provided, comprising:

[0017] The outer casing is equipped with pole posts;

[0018] The battery cell is located inside the housing and has multiple tabs.

[0019] As described in the previous embodiment, the first connecting part is electrically connected to the pole post, the second connecting part is electrically connected to the tab, and the first bending part is bent toward the battery cell.

[0020] According to a second aspect of this application, an insulating element is fitted inside the housing;

[0021] The electrical connector further includes a second bend portion disposed in the notch area, the second bend portion being connected to the second connection portion, the bending directions of the first bend portion and the second bend portion being opposite, and the second bend portion abutting against the insulating member.

[0022] According to a second aspect of this application, the bending angle of the second bending portion is less than 90°; wherein the bending angle of the second bending portion represents the included angle between the surfaces of the second bending portion and the second connecting portion.

[0023] Thirdly, an electrical device is also provided, including a battery as described in the previous embodiment.

[0024] The electrical connector, battery, and electrical device provided in this application embodiment form a notch area on at least one side of the fuse portion along a second direction, and provide a first bending portion within the notch area, connecting the first bending portion to a second connecting portion and bending relative to the second connecting portion. In this way, when a misaligned tab crosses the fuse portion, it will cover the first bending portion, which supports the misaligned tab. Furthermore, by utilizing the feature that the end of the first bending portion away from the second connecting portion protrudes from the surface of the first connecting portion, after the first bending portion lifts the misaligned tab, it can be spaced apart from the surface of the first connecting portion, preventing direct contact. Therefore, in the event of a short circuit in the battery circuit and the fuse portion melting, even if the misaligned tab crosses the fuse portion from the second connecting portion, the supporting effect of the first bending portion will prevent the misaligned tab from contacting the first connecting portion. This effectively prevents the battery circuit from reconnecting after being disconnected, eliminates safety hazards, and effectively extends the battery's lifespan. Attached Figure Description

[0025] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 This is a schematic diagram of the structure of a battery provided for an exemplary embodiment of this application.

[0027] Figure 2 for Figure 1 A partial sectional view of BB.

[0028] Figure 3 A schematic diagram of the structure of an electrical connector provided in an exemplary embodiment of this application from a first perspective.

[0029] Figure 4 A schematic diagram of the structure of an electrical connector provided in an exemplary embodiment of this application from a second perspective.

[0030] Figure 5 A schematic diagram of the structure of an electrical connector provided for another exemplary embodiment of this application.

[0031] Figure 6 A schematic diagram of the structure of an electrical connector provided for another exemplary embodiment of this application.

[0032] Reference numerals: 100-Electrical connector; 110-First connection part; 120-Second connection part; 130-Fuse part; 140-Notch area; 150-First bend part; 160-Second bend part; 200-Battery; 210-Cell; 211-Taper; 220-Top cover; 230-Terminal post; 240-Insulator. Detailed Implementation

[0033] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0034] Figure 1 This is a schematic diagram of the structure of a battery provided for an exemplary embodiment of this application. Figure 1 As shown, the battery 200 provided in this application embodiment may include a casing (not shown in the figure) and a battery cell 210. The battery cell 210 is disposed inside the casing, and the casing protects the battery cell 210.

[0035] Figure 2 for Figure 1 A partial sectional view of BB. (e.g.) Figure 1 and Figure 2 As shown, the cell 210 is provided with multiple tabs 211, and the outer casing is equipped with terminals 230. The battery 200 may also include an electrical connector 100, which is electrically connected to the terminals 230 and the tabs 211 to realize the function of transmitting current between the terminals 230 and the tabs 211.

[0036] like Figure 1 As shown, the outer casing typically includes a housing and a top cover 220. The housing has a receiving cavity, and the battery cell 210 is located inside the receiving cavity. The top cover 220 is located on the top of the housing and can be used to close the opening of the receiving cavity. Both the top cover 220 and the housing can protect the battery cell 210 and isolate the inside of the battery 200 from the external environment.

[0037] In practical applications, the pole post 230 can be mounted on the housing, or it can be mounted on the top cover 220. For example... Figure 1 and Figure 2 As shown, this application embodiment takes the pole post 230 being installed on the top cover 220 as an example for related description.

[0038] Figure 3 This is a schematic diagram of the structure of an electrical connector provided as an exemplary embodiment of this application, viewed from a first perspective. Figure 2 and Figure 3As shown, this application embodiment also provides an electrical connector 100, which may include a first connecting portion 110 and a second connecting portion 120. The first connecting portion 110 can be electrically connected to the aforementioned pole post 230, and the second connecting portion 120 can be electrically connected to the aforementioned tab 211. The current of the battery cell 210 flows outward through the tab 211-electrical connector 100-pole post 230. The second connecting portion 120 and the first connecting portion 110 are connected along a first direction (which can be understood as the length direction of the electrical connector 100, see reference). Figure 2 and Figure 3 (The directions indicated by the middle arrows G and H) are spaced out.

[0039] like Figure 2 and Figure 3 As shown, the electrical connector 100 may further include a fuse 130, which is disposed between the first connecting portion 110 and the second connecting portion 120, connecting the first connecting portion 110 and the second connecting portion 120. It should be noted that under normal operating conditions (i.e., when the fuse 130 is not broken), current can be transmitted between the first connecting portion 110 and the second connecting portion 120 through the fuse 130, thus enabling current transmission between the tab 211 and the terminal 230. When the fuse 130 melts, the first connecting portion 110 and the second connecting portion 120 are disconnected, thereby cutting off the current path between the tab 211 and the terminal 230, and thus disconnecting the internal circuit of the battery 200 to prevent a safety accident.

[0040] It should be noted that, generally, the current-passing area of ​​the fuse part 130 is small and the resistance is large. When a short circuit occurs in the circuit of the battery 200, the current increases, the resistance of the fuse part 130 is large, and more heat is generated. After the temperature rises and reaches the melting point of the fuse part 130, the fuse part 130 melts and cuts off the circuit, thus protecting the battery 200.

[0041] like Figure 2 and Figure 3 As shown, the fusible portion 130 is along the second direction (which can be understood as the width direction of the electrical connector 100, see reference). Figure 3 The length of the direction indicated by the middle arrows D and E (the second direction is perpendicular to the aforementioned first direction) is less than the length of the first connecting portion 110 along the second direction, and the length of the fuse portion 130 along the second direction is less than the length of the second connecting portion 120 along the second direction.

[0042] Therefore, when the battery 200 is short-circuited, since the length of the fuse portion 130 along the second direction is smaller, the resistance of the fuse portion 130 is greater than that of the first connection portion 110 and the second connection portion 120, and it is easier to generate a large amount of heat. As a result, the fuse portion 130 breaks first than the first connection portion 110 and the second connection portion 120.

[0043] It should be noted that during the winding process of cell 210, some of the tabs 211 on cell 210 will be misaligned (the location of the misalignment can be found in the reference). Figure 1 and Figure 2 (As indicated by the middle arrow C), the misaligned tab 211 extends from the second connection portion 120 past the fuse portion 130 to the first connection portion 110. Thus, after the fuse portion 130 melts, although the first connection portion 110 and the second connection portion 120 are disconnected from each other, the aforementioned misaligned tab 211 will still extend past the fuse portion 130 and contact the first connection portion 110. This causes the battery cell 210 to be directly electrically connected to the first connection portion 110 through the misaligned tab 211, and the circuit is connected. The fuse portion 130 cannot cut off the circuit, posing a safety hazard and affecting the service life of the battery 200.

[0044] Therefore, such as Figure 2 and Figure 3 As shown, the electrical connector 100 may further include a first bending portion 150, and the fusible portion 130 has a notch region 140 formed on at least one side along the second direction. The first bending portion 150 is located in the notch region 140 and is connected to the second connecting portion 120. The first bending portion 150 is bent relative to the second connecting portion 120.

[0045] It should be noted that the first bending portion 150 bends toward the cell 210. When the misaligned tab 211 passes the fuse portion 130, it will cover the first bending portion 150. The first bending portion 150 can support the misaligned tab 211. Since the end of the first bending portion 150 away from the second connecting portion 120 protrudes from the surface of the first connecting portion 110, after the first bending portion 150 lifts up the misaligned tab 211, the misaligned tab 211 and the surface of the first connecting portion 110 are spaced apart and will not directly contact each other. In this way, if a short circuit occurs in the battery 200 circuit and the fuse 130 blows, even if the misaligned tab 211 passes over the fuse 130 from the second connection 120, it will not come into contact with the first connection 110 under the support of the first bending part 150. This can effectively prevent the battery 200 circuit from reconnecting after being disconnected, eliminate safety hazards, and effectively extend the service life of the battery 200.

[0046] It should be noted that, with battery 200 in Figure 2 Taking the placement shown as an example, the end of the first bent portion 150 away from the second connecting portion 120 protruding from the surface of the first connecting portion 110 can be understood as the end of the first bent portion 150 away from the second connecting portion 120 in a third direction (reference). Figure 2The surface above the first connecting part 110 (in the direction indicated by the middle arrows J and K).

[0047] The electrical connector 100 and battery 200 provided in this application embodiment form a notch region 140 on at least one side of the fuse portion 130 along the second direction, and provide a first bending portion 150 in the notch region 140, so that the first bending portion 150 is connected to the second connecting portion 120 and is bent relative to the second connecting portion 120. In this way, when the misaligned electrode tab 211 passes over the fuse portion 130, it will cover the first bending portion 150. The first bending portion 150 can support the misaligned electrode tab 211, and by means of the feature that the end of the first bending portion 150 away from the second connecting portion 120 protrudes from the surface of the first connecting portion 110, after the first bending portion 150 lifts the misaligned electrode tab 211, the misaligned electrode tab 211 can be spaced apart from the surface of the first connecting portion 110 and will not directly contact it. Therefore, when a short circuit occurs in the battery 200 circuit and the fuse 130 blows, even if the misaligned tab 211 passes over the fuse 130 from the second connection 120, it will not come into contact with the first connection 110 under the support of the first bending part 150. This effectively prevents the battery 200 circuit from reconnecting after being disconnected, eliminates safety hazards, and effectively extends the service life of the battery 200.

[0048] like Figure 3 As shown, the fusible portion 130 has notched regions 140 formed on both sides of the opposite sides along the second direction, and the first bent portions 150 within the notched regions 140 on both sides of the fusible portion 130 are symmetrically arranged about the fusible portion 130. In this way, the two second bent portions 160 can jointly support the misaligned tab 211, which can improve the support stability and prevent different parts of the misaligned tab 211 from contacting the first connecting portion 110.

[0049] Figure 4 This is a schematic diagram of the structure of an electrical connector provided as an exemplary embodiment of this application, viewed from a second perspective. Figure 4 As shown, the bending angle of the first bending portion 150 is A. It should be noted that the bending angle of the first bending portion 150 can be understood as the angle (dihedral angle) between the surfaces of the first bending portion 150 and the second connecting portion 120.

[0050] It should be understood that if the bending angle A is too large, it will cause the end of the first bent portion 150 away from the second connecting portion 120 to be in a third direction (refer to) with the surface of the first connecting portion 110. Figure 4The spacing in the directions indicated by the middle arrows J and K is too small, which can easily cause the misaligned tab 211 to contact the first connecting part 110, posing a safety hazard. If the bending angle A is too small, the projection of the first bending part 150 in the third direction is within the surface of the second connecting part 120. The first bending part 150 cannot provide effective support for the misaligned tab 211 that has crossed the fuse part 130, which will cause the tab 211 that has crossed the fuse part 130 to still contact the first connecting part 110, posing a safety hazard.

[0051] Therefore, in this embodiment, the bending angle A of the first bending portion 150 is limited to the following range: 90°≤A≤165°. This can effectively improve the safety problems caused by the bending angle A of the first bending portion 150 being too large or too small.

[0052] In one embodiment, the bending angle A of the first bending portion 150 can be selected as 90°, 130°, 165°, etc.

[0053] Figure 5 This is a schematic diagram of the structure of an electrical connector provided for another exemplary embodiment of this application. (See diagram below.) Figure 5 As shown, multiple first bends 150 are provided within the same notch area 140, and the multiple first bends 150 are along the second direction (reference). Figure 5 (The directions indicated by the middle arrows D and E) are spaced out.

[0054] It should be understood that the multiple first bends 150 can support the misaligned tabs 211 at different locations along the second direction, and the misaligned tabs 211 at different locations along the second direction will not contact the first connecting portion 110, which can further prevent the first connecting portion 110 and the second connecting portion 120 from reconnecting after the fuse portion 130 is disconnected.

[0055] In one embodiment, within the same notch region 140, the spacing between any two adjacent first bends 150 in the second direction may be equal or unequal.

[0056] It should be noted that the aforementioned "multiple first bends 150" can be understood as two or more first bends 150.

[0057] In one embodiment, the bending angles of the plurality of first bending portions 150 are the same. In this way, the support height of the plurality of first bending portions 150 on the misaligned electrode tab 211 is the same, and different parts of the misaligned electrode tab 211 are less likely to tilt or collapse, which is beneficial to improving the overall stability of the misaligned electrode tab 211.

[0058] In one embodiment, the bending angles of the plurality of first bending portions 150 can also be adjusted to different angles according to the actual situation to adapt to the tilting of different parts of the misaligned electrode tab 211, and can also improve the overall stability of the misaligned electrode, so that different parts of the misaligned electrode tab 211 are not likely to come into contact with the first connecting portion 110.

[0059] like Figure 1 and Figure 2 As shown, the battery 200 may also include an insulating member 240, which is mounted on the inner side of the outer casing (i.e., the side of the outer casing near the cell 210). Specifically, in this embodiment, the insulating member 240 is disposed on the inner side of the top cover 220 (i.e., the side of the top cover 220 near the cell 210). The insulating member 240 can prevent the cell 210 and the top cover 220 from directly contacting each other, thus preventing the cell 210 from short-circuiting with the top cover 220.

[0060] Figure 6 This is a schematic diagram of the structure of an electrical connector provided for another exemplary embodiment of this application. (See diagram below.) Figure 6 As shown, the electrical connector 100 may further include a second bend 160, which is disposed within the notch region 140. The second bend 160 is connected to the second connecting portion 120, and the bending direction of the second bend 160 is opposite to that of the first bend 150.

[0061] In practical applications, the second bend 160 abuts against the insulating member 240. Under normal operating conditions, the second bend 160 is in a compressed state. After the fuse 130 melts, the second bend 160 unfolds under the action of restoring force. During the unfolding process, the second bend 160 can push the second connecting part 120 to move away from the top cover 220, thereby increasing the distance between the second connecting part 120 and the first connecting part 110. This further prevents the second connecting part 120, the tab 211, and the first connecting part 110 from reconnecting after being disconnected.

[0062] It should be noted that the bending angle of the second bending portion 160 can be understood as the angle (dihedral angle) between the surfaces of the second bending portion 160 and the second connecting portion 120. In one embodiment, the bending angle of the second bending portion 160 is less than 90°. Thus, after the second bending portion 160 comes into contact with the insulating member 240, the second bending portion 160 is more likely to bend towards the second connecting portion 120, making it easier to form the aforementioned compressed state. This allows the second bending portion 160 to quickly spring open after the fusible portion 130 is disconnected, enabling the second connecting portion 120 to move away from the insulating member 240 and the first connecting portion 110 as quickly as possible.

[0063] This application embodiment also provides an electrical device, which includes the battery 200 as described in the previous embodiment and has all the functions of the battery 200.

[0064] The beneficial effects of the electrical equipment provided in this application embodiment can be referenced to the beneficial effects of the aforementioned battery 200.

[0065] In one embodiment, the battery 200 can be a battery pack or a battery module. When the battery 200 is a battery pack, the battery pack specifically includes a battery management system (BMS) and multiple battery cells. The multiple battery cells can be electrically connected in series, parallel, or a combination of series and parallel connections, and communicate with the battery management system to form a battery pack. The battery management system controls and monitors the operating status of each battery cell. Alternatively, multiple battery cells can first be connected in series and / or parallel, and then connected with a module management system to form a battery module. These battery modules can then be electrically connected in series, parallel, or a combination of series and parallel connections, and together with the battery management system, form a battery pack.

[0066] In one embodiment, the aforementioned electrical device includes the aforementioned battery 200, and is capable of being powered by the battery 200. The aforementioned electrical device may be a vehicle, mobile phone, portable device, laptop computer, ship, spacecraft, electric toy, power tool, energy storage device, amusement equipment, elevator, and lifting equipment, etc. Vehicles may be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles may be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices may be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment may be a carousel, a drop tower, etc.

[0067] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0068] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0069] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0070] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0071] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An electrical connector for electrically connecting a terminal post and a tab, characterized in that, The electrical connector includes: The first connecting part (110) is used for electrical connection with the pole post; The second connecting part (120) is used for electrical connection with the electrode tab and is distributed at intervals from the first connecting part (110) along the first direction; A fusible portion (130) connects the first connecting portion (110) and the second connecting portion (120). The length of the fusible portion (130) along the second direction is less than the lengths of the first connecting portion (110) and the second connecting portion (120) along the second direction. A notch region (140) is formed on at least one side of the fusible portion (130) along the second direction. The first bending portion (150) is located within the notch area (140). The first bending portion (150) is connected to the second connecting portion (120). The first bending portion (150) is bent relative to the second connecting portion (120). One end of the first bending portion (150) away from the second connecting portion (120) protrudes from the surface of the first connecting portion (110). Wherein, the first direction is perpendicular to the second direction.

2. The electrical connection of claim 1, wherein, A plurality of first bends (150) are provided within the same notch area (140), and the plurality of first bends (150) are distributed at intervals along the second direction.

3. The electrical connection of claim 2, wherein, The bending angles of the multiple first bending portions (150) are the same.

4. The electrical connection of any one of claims 1 to 3, wherein, The bending angle of the first bending portion (150) is A, wherein A satisfies: 90°≤A≤165°; wherein the bending angle of the first bending portion (150) represents the angle between the surfaces of the first bending portion (150) and the second connecting portion (120).

5. The electrical connector according to any one of claims 1 to 3, characterized in that, The first bending portion (150) in the notch area (140) on both sides of the fuse portion (130) is symmetrically arranged with respect to the fuse portion (130).

6. The electrical connection of any one of claims 1 to 3, wherein, The electrical connector also includes: The second bend (160) is provided in the notch area (140), the second bend (160) is connected to the second connecting part (120), and the bending direction of the second bend (160) is opposite to that of the first bend (150).

7. A battery, characterized by include: The outer casing is equipped with pole posts; A battery cell (210) is located inside the housing, and the battery cell (210) is provided with multiple tabs (211); The electrical connector as described in any one of claims 1 to 6, wherein the first connecting portion (110) is electrically connected to the pole post (230), the second connecting portion (120) is electrically connected to the tab (211), and the first bending portion (150) is bent toward the battery cell (210).

8. The battery of claim 7, wherein, An insulating component (240) is fitted inside the outer casing; The electrical connector further includes a second bend (160) disposed within the notch region (140), the second bend (160) being connected to the second connection (120), the first bend (150) and the second bend (160) having opposite bending directions, and the second bend (160) abutting against the insulating member (240).

9. The battery according to claim 8, characterized in that, The bending angle of the second bending part (160) is less than 90°; wherein the bending angle of the second bending part (160) represents an included angle between the second bending part (160) and a surface of the second connecting part (120).

10. An electric device, characterized by A battery comprising any one of claims 7 to 9.

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