Battery, battery module and electric equipment

Abstract

The utility model relates to the technical field of batteries, and provides a battery, a battery module and electric equipment. The battery comprises a shell, a pole assembly and an elastic supporting piece, the pole assembly is connected to the shell in a sealed mode, the pole assembly is provided with a first riveting groove, the first riveting groove is sunken towards the interior of the shell, and the elastic supporting piece elastically abuts against the interior of the first riveting groove. The battery module comprises a busbar and the battery, and the busbar is inserted into the elastic supporting piece and abuts against the elastic supporting piece. The first riveting groove is of a groove structure formed after the pole assembly is subjected to the riveting process, and the elastic supporting piece is detachably connected into the first riveting groove through the elastic force of the elastic supporting piece. When the battery module is assembled and formed, the busbars are inserted into the elastic supporting pieces of the two batteries, and the elastic supporting pieces clamp the busbars by virtue of own elasticity, so that the busbars are detachably connected with the batteries while the two batteries are electrically connected.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery, a battery module and electrical equipment. Background Art

[0002] In the related art, the series-parallel connection between two batteries is generally achieved by welding to obtain a battery module with at least two batteries. Specifically, the battery has a pole, and a busbar with conductive properties is used in the two batteries, and the ends of the busbar are respectively welded to the poles of the two batteries, so as to achieve the electrical connection of the two batteries. However, if the battery module is assembled in this way, when a battery in the battery module needs to be maintained and replaced, it is difficult for the staff to remove the battery, and the cost of maintenance and replacement of new batteries is high. Utility Model Content

[0003] The utility model aims to provide a battery, a battery module and an electrical device, aiming to solve the technical problem in the related art that a single battery in a battery module is difficult to disassemble.

[0004] In a first aspect, the present application provides a battery, comprising a shell, a pole assembly and an elastic support member, wherein the pole assembly is sealed to the shell, the pole assembly has a first rivet groove, the first rivet groove is recessed toward the interior of the shell, and the elastic support member elastically abuts against the first rivet groove.

[0005] Optionally, the elastic support member includes a first connecting portion, a second connecting portion and at least one contact finger portion, the second connecting portion and the first connecting portion are arranged at intervals along the first direction, the contact finger portion is connected between the first connecting portion and the second connecting portion, the contact finger portion is twisted around its own length direction, and at least part of the contact finger portion protrudes from the outer peripheral side of the first connecting portion and the outer peripheral side of the second connecting portion to form a first abutment end for elastically abutting with the first riveting groove.

[0006] Optionally, the first connecting portion is located on a side of the second connecting portion away from the bottom wall of the first rivet groove, and the first connecting portion is provided with a receiving groove, which runs through two opposite sides of the first connecting portion in the first direction so that the bus can pass through the first connecting portion, and at least part of the contact finger portion is exposed from the receiving groove to form a second abutting end for elastically abutting with the bus.

[0007] Optionally, among the first abutting end and the second abutting end, at least the first abutting end has a sharp structure.

[0008] Optionally, the depth to which the first abutting end penetrates into the side wall surface of the first riveting groove is X, satisfying the relationship: 0.05 mm ≤ X ≤ 1 mm.

[0009] Optionally, the area of ​​the side wall surface of the first riveting groove is S1, and the total area of ​​the side wall surface of the first riveting groove penetrated by the first abutting end is S2, satisfying the relationship: S2>0.1S1.

[0010] Optionally, at least two contact fingers are provided, and all the contact fingers are arranged at intervals along the circumference of the first connecting portion or the second connecting portion, and a plug-in cavity for plugging the busbar is defined between all the contact fingers.

[0011] Optionally, the pole assembly comprises an external terminal and an internal terminal, the external terminal is TOX-riveted to the internal terminal, and a first riveting groove is formed on the external terminal.

[0012] In a second aspect, the present application provides a battery module, including a bus and the above-mentioned battery, wherein the bus is inserted into an elastic support member and abuts against the elastic support member.

[0013] In a third aspect, the present application provides an electrical device including the above-mentioned battery module.

[0014] The battery, battery module and electrical equipment provided by the utility model have the following beneficial effects: the first riveting groove is a groove structure formed by the pole assembly after the riveting process, and the elastic support member is detachably connected to the first riveting groove by its own elastic force. When assembling to form the battery module, the busbar is inserted into the elastic support members of the two batteries, and the elastic support member clamps the busbar by its own elastic force. In this way, while realizing the electrical connection of the two batteries, the busbar and the battery are detachably connected, which is conducive to improving the efficiency of the staff in replacing the battery, and is conducive to reducing the cost of maintenance and replacement of the battery. In addition, by filling the elastic support member in the first riveting groove, on the one hand, the stability of the first riveting groove can be improved, and the risk of separation of the pole assembly can be reduced. On the other hand, when the busbar is inserted into the elastic support member, the elastic support member further presses against the first riveting groove under the action of the busbar, so that the riveting combination effect can be improved, thereby improving the current capacity. Moreover, after the busbar is inserted into the elastic support member, it can fill the first riveting groove, which can further improve the structural strength of the pole assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A cross-sectional view of a battery provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of a battery provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the structure of the elastic support member provided in the embodiment of the utility model;

[0019] Figure 4 Another structural schematic diagram of the elastic support member provided in the embodiment of the utility model;

[0020] Figure 5 An exploded view of the elastic support member provided in the embodiment of the utility model;

[0021] Figure 6 A schematic diagram for illustrating the area S21 of the puncture provided in the embodiment of the utility model;

[0022] Figure 7 A schematic diagram of the structure of a pole assembly provided in an embodiment of the utility model;

[0023] Figure 8 An exploded view of a pole assembly provided in an embodiment of the utility model;

[0024] Fig. 9 A cross-sectional view of a battery module provided by an embodiment of the utility model;

[0025] Fig.10 A schematic structural diagram of a battery module provided in an embodiment of the utility model.

[0026] Among them, the reference numerals in the figure are:

[0027] 100. battery; 10. elastic support member; 20. pole assembly;

[0028] 30. housing; 11. finger contact portion; 12. first connecting portion;

[0029] 13. Second connecting portion; 14. Accommodating groove; 15. Insertion cavity;

[0030] 111. first abutting end; 112. second abutting end; 113. sharp structure;

[0031] 21. External terminal; 22. Internal terminal; 211. First riveting groove;

[0032] 212, first riveting protrusion; 221, second riveting groove; 222, second riveting protrusion;

[0033] 31. Main body; 32. Top cover; 200. Battery module;

[0034] 210, busbar; 220, connecting piece; 230, plug-in part;

[0035] S21, penetration area; S31, contact area. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0038] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The battery 100, the battery module 200 and the electrical equipment in the embodiment of the present invention are now described.

[0042] Please refer to Figure 1 and Figure 2 The present application provides a battery 100, including a shell 30, a pole assembly 20 and an elastic support member 10, the pole assembly 20 is sealed and connected to the shell 30, the pole assembly 20 has a first rivet groove 211, the first rivet groove 211 is recessed toward the inside of the shell 30, and the elastic support member 10 elastically abuts against the first rivet groove 211.

[0043] Specifically, the battery 100 also includes a battery cell, the shell 30 includes a main body 31 and a top cover 32, the top surface of the main body 31 is provided with a receiving cavity, the battery cell is installed in the receiving cavity, the top cover 32 is sealed and connected to the top surface of the main body 31, and the pole assembly 20 is sealed and connected to the top cover 32. The top surface of the pole assembly 20 has a first riveting groove 211 that is recessed toward the battery cell, wherein the first riveting groove 211 is a groove structure formed by the pole assembly 20 after the riveting process, more specifically, the riveting process is a TOX riveting process, which is a rivet-free riveting technology. The elastic support member 10 is detachably connected to the first riveting groove 211 by its own elastic force, and the elastic support member 10 is used for the bus 210 to be plugged in.

[0044] It can be seen that when assembling the battery module 200, the busbar 210 is inserted into the elastic support members 10 of the two batteries 100, and the elastic support members 10 clamp the busbar 210 by their own elastic force. In this way, while realizing the electrical connection between the two batteries 100, the busbar 210 and the battery 100 are detachably connected, which is conducive to improving the efficiency of the staff in replacing the battery 100, and is conducive to reducing the cost of maintaining and replacing the battery 100. In addition, by filling the elastic support member 10 in the first riveting groove 211, on the one hand, the stability of the first riveting groove 211 can be improved, that is, the structural strength of the pole assembly 20 can be improved, and the risk of separation of the pole assembly 20 can be reduced. On the other hand, when the busbar 210 is inserted into the elastic support member 10, the elastic support member 10 further presses against the first riveting groove 211 under the action of the busbar 210, so that the riveting bonding effect can be improved, thereby improving the current capacity. Moreover, after the busbar 210 is inserted into the elastic support member 10 , it can fill the first riveting groove 211 , thereby further improving the structural strength of the pole assembly 20 .

[0045] In another embodiment of the present application, please refer to Figures 3 to 5The elastic support member 10 includes a first connecting portion 12, a second connecting portion 13 and at least one contact finger portion 11. The second connecting portion 13 and the first connecting portion 12 are arranged in a first direction with an interval. The contact finger portion 11 is connected between the first connecting portion 12 and the second connecting portion 13. The contact finger portion 11 is twisted around its own length direction. At least part of the contact finger portion 11 protrudes from the outer peripheral side of the first connecting portion 12 and the outer peripheral side of the second connecting portion 13 to form a first abutting end 111 for elastically abutting against the first rivet groove 211.

[0046] Specifically, the first direction is the up-down direction, and the first riveting groove 211 extends downward. In the horizontal direction, the contact finger portion 11 protrudes from the outer peripheral side of the first connecting portion 12 and the outer peripheral side of the second connecting portion 13 to form a first abutting end 111. Among them, the horizontal direction is perpendicular to the up-down direction. The contact finger portion 11 has a curved surface after being twisted. When the elastic support member 10 is inserted into the first riveted groove 211, the first riveted groove 211 squeezes the first abutting end 111 along the curved surface on the first abutting end 111, causing the contact finger portion 11 to twist. Since the contact finger portion 11 is elastic, the first abutting end 111 can be pressed against the side wall surface of the first riveted groove 211, thereby realizing a detachable connection between the elastic support member 10 and the pole assembly 20. The twisted setting of the contact finger portion 11 can improve the connection stability between the elastic support member 10 and the pole assembly 20.

[0047] It can be understood that, assuming that the contact finger 11 twists clockwise around its own length direction, when the first riveting groove 211 squeezes the first abutting end 111, the first abutting end 111 and the contact finger 11 twist counterclockwise. Of course, the contact finger 11 can be twisted clockwise or counterclockwise, which is not limited here.

[0048] In another embodiment of the present application, please refer to Figures 3 to 5 The first connection portion 12 is located on a side of the second connection portion 13 away from the bottom wall of the first riveting groove 211. The first connection portion 12 is provided with a receiving groove 14. The receiving groove 14 runs through two opposite sides of the first connection portion 12 in the first direction so that the bus 210 can pass through the first connection portion 12. At least part of the contact finger portion 11 is exposed in the receiving groove 14 to form a second abutting end 112 for elastically abutting against the bus 210.

[0049] Specifically, the first connection portion 12 is located above the second connection portion 13, and the receiving groove 14 runs through the upper and lower sides of the first connection portion 12. In the horizontal direction, the contact finger portion 11 is exposed from the receiving groove 14 and forms a second abutting end 112. When the bus 210 passes through the receiving groove 14 and contacts the second abutting end 112, the bus 210 presses the second abutting end 112 along the curved surface on the second abutting end 112, causing the contact finger portion 11 to twist. Since the contact finger portion 11 is elastic, the second abutting end 112 can clamp the bus 210, thereby realizing a detachable connection between the bus 210 and the elastic support member 10.

[0050] It can be seen that the contact finger portion 11 of the elastic support member 10 of the present application forms a first abutment end 111 and a second abutment end 112 by twisting, so that even if the elastic support member 10 has only one contact finger portion 11, it can achieve a detachable connection with the pole assembly 20 and the bus 210.

[0051] From another perspective, each contact finger 11 of the elastic support member 10 can abut against the pole assembly 20 and the bus 210, which is beneficial to improving the connection stability between the elastic support member 10 and the pole assembly 20, and is beneficial to improving the connection stability between the elastic support member 10 and the bus 210.

[0052] In addition, when the bus 210 is inserted into the elastic support member 10 and squeezes the second abutment end 112, a horizontal force is applied to the contact finger 11, so that the contact finger 11 can further press against the first riveting groove 211, which is beneficial to improve the riveting effect of the pole assembly 20, thereby improving the current carrying capacity.

[0053] In another embodiment of the present application, please refer to Figure 4 , the first abutting end 111 has a sharp structure 113. Specifically, two adjacent surfaces on the first abutting end 111 intersect to form an edge, and the two adjacent surfaces and the edge constitute the sharp structure 113. When the elastic support member 10 is inserted into the first riveting groove 211, the sharp structure 113 of the first abutting end 111 pierces the side wall surface of the first riveting groove 211, further improving the connection stability between the elastic support member 10 and the pole assembly 20.

[0054] In another embodiment of the present application, please refer to Figure 4 , the second abutting end 112 also has a sharp structure 113. Specifically, two adjacent surfaces of the second abutting end 112 intersect to form an edge, and the two adjacent surfaces and the edge constitute the sharp structure 113. When the bus 210 is inserted into the elastic support member 10, the sharp structure 113 of the second abutting end 112 pierces the outer surface of the bus 210, further improving the connection stability between the bus 210 and the elastic support member 10.

[0055] In another embodiment of the present application, the depth of the first abutting end 111 penetrating into the side wall of the first riveting groove 211 is X, which satisfies the relationship: 0.05mm≤X≤1mm. The penetration depth of the first abutting end 111 can be, for example, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm and 1mm, etc. When 0.05mm≤X≤1mm is satisfied, it can ensure that the elastic support member 10 is not easily displaced in the first riveting groove 211 due to vibration, and it can also facilitate the staff to install and remove the elastic support member 10 in the first riveting groove 211.

[0056] In another embodiment of the present application, the area of ​​the side wall of the first riveting groove 211 is S1, and the total area of ​​the side wall of the first riveting groove 211 penetrated by the first abutting end 111 is S2, satisfying the relationship: S2>0.1S1. Such a configuration can also improve the connection stability between the elastic support member 10 and the pole assembly 20.

[0057] Please combine Figure 6 Now let's further explain the total penetration area S2. Figure 6 The middle dashed line indicates the area S21 of the first riveting groove 211 penetrated by the first abutting end 111. The sum of all penetrated areas S21 is the total penetrated area S2. Figure 6 Only one first abutting end 111 is shown by way of example. S31 represents the contact area S31 between the pole assembly 20 and the first abutting end 111, the sum of all contact areas S31 is the total contact area S3, and the total penetration area S2 does not refer to the total contact area S3.

[0058] It should be noted that Figure 6 The shape of the first abutting end 111 is merely for the convenience of explaining the piercing area S21 , and should not be regarded as a limitation to the present application.

[0059] In another embodiment of the present application, please refer to Figures 3 to 5 , at least two contact fingers 11 are provided, and all contact fingers 11 are arranged at intervals along the circumference of the first connection part 12 or the second connection part 13, and a plug-in cavity 15 for plugging the busbar 210 is defined between all contact fingers 11. Specifically, all contact fingers 11 are arranged in a circumferential annular array along the circumference of the first connection part 12 or the second connection part 13, so that the elastic support member 10 and the busbar 210 are evenly stressed, which is beneficial to improve the connection stability between the elastic support member 10 and the pole assembly 20, and improve the connection stability between the busbar 210 and the elastic support member 10. The accommodating groove 14 is connected to the plug-in cavity 15. During assembly, the busbar 210 passes through the accommodating groove 14 and is inserted into the plug-in cavity 15, and abuts against the second abutting end 112.

[0060] In another embodiment of the present application, please refer to Figure 5 , the second connection part 13 is provided with a receiving groove 14, which runs through the upper and lower sides of the second connection part 13, and the receiving groove 14 is used for the busbar 210 to pass through. In the horizontal direction, the second abutting end 112 of the contact finger part 11 is exposed from the receiving groove 14 on the second connection part 13. In this way, the upper and lower ends of the elastic support member 10 can be passed through by the busbar 210. In other words, when the elastic support member 10 and the pole assembly 20 are assembled together, there is no need to detect the position of the receiving groove 14, and the elastic support member 10 can be directly inserted into the first riveting groove 211, which is conducive to improving assembly efficiency.

[0061] The shapes of the first connection portion 12 and the second connection portion 13 may be circular, square, etc. In the present embodiment, the shapes of the first connection portion 12 and the second connection portion 13 are both circular.

[0062] In another embodiment of the present application, the finger portion 11 is obliquely connected to the first connection portion 12 and the second connection portion 13, that is, there is an angle A between the finger portion 11 and the first connection portion 12, and there is an angle B between the finger portion 11 and the second connection portion 13, and the angle A is equal to the angle B, and the angle range is 15° to 60°. In this way, the length of the finger portion 11 can be increased, thereby increasing the contact area between the first abutting end 111 and the side wall of the first riveting groove 211, and increasing the penetration of the first abutting end 111 into the side wall of the first riveting groove 211, thereby improving the connection stability between the elastic support member 10 and the pole assembly 20. Similarly, the contact area between the second abutting end 112 and the bus 210, and the area of ​​the second abutting end 112 penetrating the outer surface of the bus 210 can also be increased, thereby improving the connection stability between the bus 210 and the elastic support member 10.

[0063] In some embodiments, the elastic support member 10 is made of beryllium copper with silver plated surface, which has good conductivity and high strength, and is conducive to improving the current carrying capacity. Of course, the elastic support member 10 can also be made of other excellent and stable conductors.

[0064] In another embodiment of the present application, please refer to Figure 7 and Figure 8 The pole assembly 20 includes an external terminal 21 and an internal terminal 22, the external terminal 21 and the internal terminal 22 are TOX riveted, and the external terminal 21 is formed with a first riveting groove 211. Specifically, the external terminal 21 is sealed and connected to the top cover 32, and the internal terminal 22 is located on the side of the external terminal 21 close to the battery cell, that is, the internal terminal 22 is located below the external terminal 21. The internal terminal 22 is used to be welded with the tab of the battery cell, so as to achieve electrical connection between the internal terminal 22 and the battery cell.

[0065] First, in the prior art, the internal terminal 22 is connected below the external terminal 21 by welding, while in the present application, the TOX riveting process is used to connect the internal terminal 22 below the external terminal 21, which is beneficial to improving production efficiency. Secondly, the TOX riveting process enables the formation of a first riveting groove 211 and a first riveting protrusion 212 on the external terminal 21, and enables the formation of a second riveting groove 221 and a second riveting protrusion 222 on the internal terminal 22. Among them, the first riveting protrusion 212 on the external terminal 21 is clamped in the second riveting groove 221 of the internal terminal 22, and the elastic support member 10 is installed in the first riveting groove 211 of the external terminal 21. In this way, on the one hand, there is no need to additionally form a groove structure on the external terminal 21 to install the elastic support member 10. On the other hand, installing the elastic support member 10 in the first riveting groove 211 of the external terminal 21 is equivalent to filling the first riveting groove 211, which can provide a certain support strength, thereby avoiding the deformation of the first riveting groove 211 due to hollow and no force support when the battery 100 encounters vibration or large torque conditions, which is beneficial to improving the electrical connection between two batteries 100. In addition, when the bus bar 210 is inserted into the elastic support member 10, the connection strength between the external terminal 21 and the internal terminal 22 can be improved, that is, the riveting joint effect between the external terminal 21 and the internal terminal 22 can be improved, and the risk of separation between the external terminal 21 and the internal terminal 22 can be reduced.

[0066] In another embodiment of the present application, an installation cavity is formed on the top surface of the top cover 32, and the installation cavity penetrates to the bottom surface of the top cover 32. The external terminal 21 is located in the installation cavity, and the external terminal 21 and the top cover 32 are connected by a nano-injection molding process.

[0067] In some embodiments, the cross-section of the external terminal 21 is in a "Ji" shape. With such a setting, the nano-injection molding connection area can be increased, while improving the connection strength between the external terminal 21 and the top cover 32, and extending the electrolyte leakage path, which is beneficial to reducing the risk of electrolyte leakage.

[0068] As can be seen from the above, the use of the elastic support member 10 greatly facilitates the maintenance and replacement of the battery 100 in the battery module 200 by the staff, and the bus bar 210 can be detachably connected to the elastic support member 10 multiple times, improving the practicability. In addition, since the finger portion 11 of the elastic support member 10 has elasticity, even if the battery module 200 vibrates, good contact can be maintained between the elastic support member 10 and the bus bar 210, and between the elastic support member 10 and the first riveting groove 211, thereby ensuring the electrical connection effect between two batteries 100.

[0069] Please refer to Fig. 9 and Fig.10The battery module 200 provided in the present application includes a busbar 210 and the above-mentioned battery 100. The busbar 210 is inserted into the elastic support member 10 and abuts against the elastic support member 10. Specifically, the busbar 210 includes a connecting piece 220 and an inserting portion 230. The connecting piece 220 is provided with an inserting portion 230 at both ends. The two ends of the connecting piece 220 are respectively inserted into the elastic support members 10 of the two batteries 100 through the inserting portions 230, thereby realizing the electrical connection between the two batteries 100. Among them, the inserting portion 230 passes through the accommodating groove 14 of the first connecting portion 12 and enters the inserting cavity 15, and abuts against the second abutting end 112 of the contact finger portion 11.

[0070] The present application also provides an electrical device, including the above-mentioned battery module 200. The electrical device can be a car, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The car can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended-range car, and the like; the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the utility model do not impose any special restrictions on the above-mentioned electrical devices.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery, characterized in that: It includes a shell, a pole assembly and an elastic support member, wherein the pole assembly is sealed and connected to the shell, the pole assembly has a first riveted groove, the first riveted groove is recessed toward the inside of the shell, and the elastic support member elastically abuts against the first riveted groove.

2. The battery according to claim 1, characterized in that The elastic support member comprises: a first connecting portion; A second connecting portion, arranged spaced apart from the first connecting portion along a first direction; At least one contact finger portion is connected between the first connection portion and the second connection portion, the contact finger portion is twisted around its own length direction, and at least part of the contact finger portion protrudes from the outer peripheral side of the first connection portion and the outer peripheral side of the second connection portion to form a first abutment end for elastically abutting against the first rivet groove.

3. The battery according to claim 2, characterized in that: The first connecting portion is located on a side of the second connecting portion away from the bottom wall of the first rivet groove. The first connecting portion is provided with a receiving groove, which runs through two opposite sides of the first connecting portion in the first direction so that the bus can pass through the first connecting portion. At least part of the contact finger portion is exposed from the receiving groove to form a second abutting end for elastically abutting against the bus.

4. The battery according to claim 3, characterized in that: Of the first abutting end and the second abutting end, at least the first abutting end has a sharp structure.

5. The battery according to claim 4, characterized in that: The depth of the first abutting end penetrating into the side wall surface of the first riveting groove is X, which satisfies the relationship: 0.05mm≤X≤1mm.

6. The battery according to claim 4, characterized in that: The area of ​​the side wall surface of the first riveting groove is S1, and the total area of ​​the side wall surface of the first riveting groove penetrated by the first abutting end is S2, satisfying the relationship: S2>0.1S1.

7. The battery according to claim 2, characterized in that: At least two contact fingers are provided, and all the contact fingers are arranged at intervals along the circumference of the first connection portion or the second connection portion, and a plug-in cavity for plugging a busbar is defined between all the contact fingers.

8. The battery according to any one of claims 1 to 7, characterized in that: The pole assembly includes an external terminal and an internal terminal, the external terminal is TOX-riveted to the internal terminal, and the external terminal is formed with the first riveting groove.

9. A battery module, characterized in that: It comprises a bus bar and the battery according to any one of claims 1 to 8, wherein the bus bar is inserted into the elastic support member and abuts against the elastic support member.

10. An electrical equipment, characterized in that: Comprising the battery module as claimed in claim 9.

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