Battery

Abstract

The utility model belongs to the technical field of battery structures, and particularly relates to a battery, which comprises a confluence plate, a battery cell, a shell and a top cover, the confluence plate comprises a plate body and an insulating separation blade which are connected with each other, and the insulating separation blade is arranged at the edge of the plate body; a first tab and a second tab extend from the battery cell along the height direction of the battery cell; the shell is provided with at least one opening, and the battery cell is accommodated in the shell; the top cover is arranged at the opening and is used for sealing the shell, and the top cover is provided with a pole in an insulating manner; wherein the insulating separation blade is positioned between the side surface of the battery cell and the inner wall of the shell. According to the utility model, the insulating separation blade is arranged, so that the condition of short circuit caused by outward turning of the tab is prevented, the safety of the battery is further improved, meanwhile, the process flow of sticking an adhesive tape at the welding position of the tab and the collector plate in a conventional battery can be omitted, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery structure, and specifically relates to a battery. Background Art

[0002] Nowadays, with the development of modern society, batteries have the advantages of high voltage, high energy density, long cycle life, small self-discharge, wide operating temperature range, safety and environmental protection. More and more devices choose batteries as power sources, such as mobile phones, laptops, power tools and electric vehicles, which provides a broad space for the application and development of batteries.

[0003] Among them, there is a battery in which the positive electrode ear is electrically connected to the positive electrode column on the cover through the positive electrode collector disk so that the electrode column is positively charged, and the negative electrode ear is electrically connected to the cover and the shell through the negative electrode collector disk so that the cover and the shell are negatively charged. However, during the assembly process, the electrode ear may be folded, causing the positive electrode ear to fold and contact with the shell, resulting in a short circuit.

[0004] In the prior art, the method to solve the above problem is to stick a circle of insulating tape on the welding point between the collector plate and the battery cell tab. Although the above method can prevent the positive electrode tab from folding and contacting the shell to cause a short circuit, the manual sticking of the insulating tape cannot guarantee the consistency of the battery, and it wastes manpower and material resources while reducing production efficiency. Therefore, it is urgent to propose a new technical solution to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a battery in view of the shortcomings of the prior art, which omits the process of sticking tape at the welding point between the pole ear and the collector plate in the conventional battery by setting an insulating baffle, thereby reducing production costs and improving production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery comprising:

[0008] The busbar comprises a busbar body and an insulating baffle connected to each other, wherein the insulating baffle is arranged at the edge of the busbar body;

[0009] A battery cell, wherein the battery cell has a first pole tab and a second pole tab extending along a height direction thereof;

[0010] A shell, wherein the shell is provided with at least one opening, and the battery cell is accommodated in the shell;

[0011] A top cover, the top cover is arranged at the opening for sealing the shell, and the top cover is insulated and provided with a pole;

[0012] Wherein, the insulating baffle is located between the side surface of the battery core and the inner wall of the shell.

[0013] Specifically, along the height direction, the insulating baffle extends from the edge of the disk body toward the direction close to the battery core, the height of the insulating baffle is greater than the height of the first pole lug and the second pole lug, and the first pole lug or the second pole lug is isolated from the shell by the insulating baffle.

[0014] Specifically, the height of the insulating baffle in the height direction is set to 0.65mm-0.75mm, and the thickness of the insulating baffle is 0.1mm. Its height exceeds the highest height of the pole ear in the existing battery of 6mm, and can completely cover the pole ear to ensure the insulation effect of the insulating baffle.

[0015] When the first electrode tab and the second electrode tab are arranged on the same side of the battery cell along the height direction, the battery has the following structure.

[0016] Specifically, the disk body includes a first current collecting disk, a second current collecting disk and an insulating member, the first current collecting disk and the second current collecting disk are insulated and connected by the insulating member, the insulating baffle is arranged on the insulating member, the insulating baffle and the insulating member are integrally formed, or the insulating baffle is provided with a connecting member, and the insulating baffle is connected to the disk body through the connecting member.

[0017] Specifically, the first current collecting disk includes a main body portion and a boss portion which are connected to each other, the boss portion passes through the insulating member and is electrically connected to the pole, and the main body portion is electrically connected to the first pole tab.

[0018] Specifically, the second current collecting plate includes a main body, a connecting portion and a welding portion, the main body is connected to the welding portion through the connecting portion, the connecting portion can be bent, the insulating member is provided with an avoidance area corresponding to the connecting portion, the avoidance area avoids the connecting portion, so that the second current collecting plate can be electrically connected to the top cover.

[0019] Specifically, the main body is electrically connected to the second electrode tab, and the welding portion is electrically connected to the top cover.

[0020] Specifically, the top cover is provided with a first barrier and a second barrier, the pole is insulated and connected to the top cover through the first barrier, the second barrier is protruding on a side of the top cover close to the collector plate, and the second barrier is arranged corresponding to the first collector plate to prevent the first collector plate from contacting the top cover and causing a short circuit after the top cover is assembled.

[0021] When the first electrode tab and the second electrode tab are respectively arranged on both sides of the battery cell along the height direction, the battery has the following structure.

[0022] Specifically, the insulating baffle is arranged at the edge of the disk body and circumferentially around the disk body. Along the height direction, the insulating baffle extends toward the direction close to the battery cell. The pole is insulated and connected to the top cover. The first pole ear is electrically connected to the pole through the disk body, and the second pole ear is electrically connected to the shell.

[0023] The beneficial effects of the utility model are:

[0024] (1) The battery of the utility model includes a busbar, a battery cell, a shell and a top cover, wherein the busbar includes a disk body and an insulating baffle that are connected to each other, wherein the insulating baffle is arranged at the edge of the disk body; the battery cell has a first pole ear and a second pole ear extending along its height direction; the shell is provided with at least one opening, and the battery cell is accommodated in the shell; the top cover is provided at the opening for sealing the shell, and the top cover is insulated and provided with a pole; wherein the insulating baffle is located between the side surface of the battery cell and the inner wall of the shell. The battery of the utility model is provided with an insulating baffle, which can prevent the first pole ear or the second pole ear from folding and contacting the shell, and in the battery structure where the shell is charged, further prevents the positive and negative poles from being connected to cause a short circuit, thereby increasing the safety of the battery;

[0025] (2) At the same time, the provision of the insulating baffle enables the battery of the utility model to save the process of sticking tape at the welding point between the tab and the collector plate during the processing, thereby reducing production costs and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of an exploded view of the first embodiment of the present invention.

[0028] Figure 2 It is a schematic structural diagram of the busbar in the first embodiment of the utility model.

[0029] Figure 3 It is a schematic structural diagram of the insulating baffle in the first embodiment of the utility model.

[0030] Figure 4 This is an assembly diagram of the top cover and the battery cell in the first embodiment of the utility model.

[0031] Figure 5 This is a schematic diagram of the decomposition of the second embodiment of the present utility model.

[0032] Figure 6 It is a schematic structural diagram of the busbar in the second embodiment of the utility model.

[0033] The reference numerals are described as follows:

[0034] 1. current collecting plate; 11. plate body; 111. first current collecting plate; 1111. main body; 1112. boss; 112. second current collecting plate; 1121. main body; 1122. connecting part; 1123. welding part; 113. insulating member; 1131. avoidance area; 1132. bayonet; 1133. through hole; 1134. positioning part; 12. insulating baffle; 121. plate body; 122. connecting member;

[0035] 2. battery cell; 21. first pole ear; 22. second pole ear;

[0036] 3. Shell;

[0037] 4. Top cover; 41. Pole; 42. First barrier; 43. Second barrier;

[0038] H. Height direction. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0041] Reference to "embodiment" in this application means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application are not limited to this.

[0044] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0045] In the production process of cylindrical batteries, a finished cylindrical battery cell is produced through the processes of bare cell winding - busbar welding - manual insulating tape application - shell insertion - pole welding - sealing welding - liquid injection - sealing pin welding, etc. The process of manual insulating tape application is to stick the insulating tape to the welding point between the busbar and the pole ear to prevent the pole ear from folding, and further prevent the pole ear from contacting the shell with different polarities and causing a short circuit. However, manual glue application is cumbersome, which will lead to increased costs and reduced production efficiency. In order to solve the above problems, the present application improves the busbar structure, adds insulating baffles to prevent the pole ears of different polarities from contacting the shell, and eliminates the step of manual glue application.

[0046] The following is combined with Figures 1 to 6 The utility model is further described in detail with specific implementation modes, but is not intended to limit the utility model.

[0047] Implementation Method 1

[0048] The following is combined with Figures 1 to 4 Description of Implementation Method 1

[0049] like Figure 1 As shown, a battery, in this embodiment, is a cylindrical battery, comprising:

[0050] The battery cell 2 has a first pole tab 21 and a second pole tab 22 extending along a height direction H of the battery cell 2, and the first pole tab 21 and the second pole tab 22 are located on the same side of the battery cell 2;

[0051] A housing 3 is provided with at least one opening, and the battery cell 2 is accommodated in the housing 3;

[0052] The top cover 4 is arranged at the opening for sealing the housing 3 , and the top cover 4 is insulated and provided with a pole 41 , the first pole lug 21 is electrically connected to the pole 41 through the busbar 1 , and the second pole lug 22 is electrically connected to the top cover 4 through the busbar 1 .

[0053] It can be understood that the first pole ear 21 can be a positive pole ear or a negative pole ear, and the second pole ear 22 can be a positive pole ear or a negative pole ear. The polarity of the first pole ear 21 and the second pole ear 22 are opposite to each other, ensuring the normal realization of the battery power supply function. In this embodiment, the first pole ear 21 is a positive pole ear, so that the pole 41 is positively charged, and the second pole ear 22 is a negative pole ear, so that the top cover 4 is negatively charged. The pole 41 is insulated and connected to the top cover 4, and there will be no short circuit caused by the positive and negative connections. The top cover 4 is connected to the shell 3, so that the shell 3 is negatively charged, that is, the polarity of the first pole ear 21 is different from that of the shell 3.

[0054] like Figure 2As shown, the busbar 1 includes a disc body 11 and an insulating baffle 12 that are connected to each other. Along the height direction H, the insulating baffle 12 extends from the edge of the disc body 11 toward the direction close to the battery cell 2. The insulating baffle 12 is arranged at the edge of the disc body 11. The disc body 11 includes a first current collecting disc 111, a second current collecting disc 112 and an insulating member 113. The insulating baffle 12 is arranged on the insulating member 113. The first current collecting disc 111 and the second current collecting disc 112 are insulated and connected by the insulating member 113. The insulating member 113 is used to prevent the first current collecting disc 111 and the second current collecting disc 112 from being electrically connected.

[0055] In this embodiment, the height of the insulating baffle 12 in the height direction H is set to 0.65mm-0.75mm, the thickness of the insulating baffle 12 is 0.1mm, and the height of the insulating baffle 12 exceeds the height of the first pole ear 21, and can completely block the first pole ear 21 to ensure the insulation effect of the insulating baffle. At the same time, the thickness of the insulating baffle 12 is small enough and will not affect the assembly of the battery cell 2 and the shell 3. It can be understood that the height and thickness of the insulating baffle 12 can be adjusted according to actual conditions, and it is only necessary to achieve the above-mentioned effect without specific restrictions.

[0056] Preferably, the material of the insulating baffle 12 and the insulating member 113 is one of polyolefin, polyurethane and polypropylene, and the material of the insulating baffle 12 and the insulating member 113 is the same as or different from that of the insulating member 113.

[0057] Preferably, the first current collecting plate 111 includes a main body portion 1111 and a boss portion 1112 which are connected to each other. The boss portion 1112 is electrically connected to the pole 41 through the insulating member 113 , and the main body portion 1111 is electrically connected to the first pole lug 21 .

[0058] Preferably, the second current collecting plate 112 includes a main body 1121, a connecting portion 1122 and a welding portion 1123, the main body 1121 is electrically connected to the second pole ear 22, the welding portion 1123 is electrically connected to the top cover 4, the main body 1121 is connected to the welding portion 1123 through the connecting portion 1122, the connecting portion 1122 can be bent, and the insulating member 113 is provided with an avoidance area 1131 corresponding to the connecting portion 1122, the avoidance area 1131 is provided to avoid the connecting portion 1122, so that the connecting portion 1122 can be electrically connected to the top cover 4.

[0059] In some embodiments, a snap-on 1132 is provided on the peripheral side of the insulating member 113 so that the first collector plate 111 can be aligned with the first pole lug 21 and the second collector plate 112 can be aligned with the second pole lug 22, which facilitates the clamping and positioning of the collector plate 1 during the subsequent assembly process.

[0060] In some embodiments, the insulating member 113 is provided with a through hole 1133 . When the cylindrical battery is injected with liquid, the through hole 1133 can provide a channel for the electrolyte to enter the battery cell 2 , thereby accelerating the infiltration rate of the battery cell 2 and improving the injection efficiency.

[0061] like Figure 3 As shown, in this embodiment, the insulating baffle 12 includes a sheet body 121 and a connecting member 122 that are connected to each other. The connecting member 122 and the sheet body 121 are located in horizontal planes in different directions, which facilitates the welding of the insulating baffle 12 and the insulating member 113. At the same time, the size of the connecting member 122 is smaller than the size of the first collector plate 111, and does not affect the electrical connection between the first pole ear 32 and the first collector plate 111. It can be understood that in some other embodiments, the insulating baffle 12 can be connected to the insulating member 113 by snapping or other connection methods. The insulating baffle 12 can also be integrally formed with the insulating member 113, which can increase the overall physical strength of the collector plate 1.

[0062] like Figure 4 As shown, the insulating baffle 12 is located between the side of the battery cell 2 and the inner wall of the shell 3, so that the first pole ear 21 is insulated and isolated from the shell 3 to prevent a short circuit. In some other embodiments, an insulating component can also be provided at the shell 3 corresponding to the first pole ear 21, so that the first pole ear 21 is insulated and isolated from the shell 3.

[0063] Preferably, the top cover 4 is provided with a first barrier 42 and a second barrier 43, the pole 41 is insulated and connected to the top cover 4 through the first barrier 42, the second barrier 43 is protruding from a side of the top cover 4 close to the collector plate 1, and the second barrier 43 is arranged corresponding to the first collector plate 111, so that when the top cover 4 is buckled, it is insulated and isolated from the first collector plate 111 to prevent short circuit.

[0064] The specific steps of the preparation process of the battery of the first embodiment are as follows:

[0065] 1) The first current collecting plate 111 and the second current collecting plate 112 are fixedly connected to the insulating member 113, and the insulating baffle 12 is connected to the insulating member 113 to form the current collecting plate 1, and the welding portion 1123 is connected to the top cover 4 by laser welding, so that the current collecting plate 1 is connected to the top cover 4;

[0066] 2) Lead out the first pole ear 21 and the second pole ear 22 from the side of the battery cell 2 close to the busbar 1, the first pole ear 21 is electrically connected to the first collector 111, the second pole ear 22 is electrically connected to the second collector 112, adjust the position of the busbar 1 so that the insulating baffle 12 is located outside the battery cell 2 corresponding to the first pole ear 221, and the battery cell 2 is placed in the shell;

[0067] 3) bending the connecting portion 1122, buckling the top cover 4, and ultrasonically welding the boss portion 1112 and the pole 41 to obtain a semi-finished product;

[0068] 4) The semi-finished product is injected with liquid, baked, sealed and pinned, and the finished battery is obtained.

[0069] Implementation Method 2

[0070] like Figure 5 and Figure 6 As shown, different from the first embodiment, the first pole ear 21 and the second pole ear 22 are respectively arranged on opposite sides of the battery cell 2 along the height direction H, and the insulating baffle 12 is arranged at the edge of the disk body 11 and circumferentially around the disk body 11. Along the height direction H, the insulating baffle 12 extends toward the direction close to the battery cell 2, and the insulating baffle 12 is arranged as a ring structure, which further increases the insulating isolation effect of the insulating baffle 12.

[0071] Preferably, the pole 41 is insulated and connected to the top cover 4, the first pole ear 21 is electrically connected to the pole 41 through the disk body 11, the second pole ear 22 is electrically connected to the shell 3, and the shell 3 is welded to the top cover 4, so that the polarity of the top cover 4 and the pole 41 is opposite, so that the positive and negative poles are led out at the same end of the battery. In the subsequent use process, the power supply circuit of the battery is simple and easy to organize.

[0072] Preferably, the disk body 11 is provided with a plurality of through holes 1133 which are spaced apart or closely distributed, so as to provide a channel for the electrolyte to enter the battery cell 2 during the subsequent battery filling process, thereby improving the filling efficiency.

[0073] Preferably, a plurality of positioning portions 1134 protruding toward the battery cells 2 or away from the battery cells 2 are provided on the plate body 11 to prevent the position of the busbar 1 from being offset.

[0074] In some other embodiments, the second pole tabs 22 may also be electrically connected to the housing 3 through the busbar 1 , which can also prevent the second pole tabs 22 from folding and does not affect the output function of the second pole tabs.

[0075] The other structures are the same as those in the first embodiment and will not be described in detail here.

[0076] Electrical devices

[0077] An electrical device includes a battery according to Embodiment 1 or Embodiment 2, and the battery may be a lithium-ion battery, a sodium-ion battery, a magnesium-ion battery, etc. The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as 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, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0078] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A battery, It is characterized in that include: A busbar (1) comprises a busbar body (11) and an insulating baffle (12) which are connected to each other, wherein the insulating baffle (12) is arranged on the edge of the busbar body (11); A battery cell (2), wherein the battery cell (2) has a first pole tab (21) and a second pole tab (22) extending along a height direction (H) thereof; A shell (3), the shell (3) being provided with at least one opening, and the battery cell (2) being accommodated in the shell (3); A top cover (4), the top cover (4) being arranged at the opening and used for sealing the housing (3), the top cover (4) being insulated and provided with a pole (41); Wherein, the insulating baffle (12) is located between the side surface of the battery core (2) and the inner wall of the shell (3).

2. The battery according to claim 1, It is characterized in that Along the height direction (H), the insulating baffle (12) extends from the edge of the disk body (11) toward the direction close to the battery core (2), the height of the insulating baffle (12) is greater than the height of the first pole lug (21) and the second pole lug (22), and the first pole lug (21) or the second pole lug (22) is isolated from the shell (3) by the insulating baffle (12).

3. The battery according to claim 1, It is characterized in that The first pole lug (21) and the second pole lug (22) are arranged on the same side of the battery core (2) along the height direction (H).

4. The battery according to claim 3, It is characterized in that The disk body (11) comprises a first current collecting disk (111), a second current collecting disk (112) and an insulating member (113); the first current collecting disk (111) and the second current collecting disk (112) are insulated and connected via the insulating member (113); and the insulating baffle (12) is arranged on the insulating member (113).

5. The battery according to claim 4, It is characterized in that The first current collecting plate (111) comprises a main body portion (1111) and a boss portion (1112) which are connected to each other, the boss portion (1112) passes through the insulating member (113) to be electrically connected to the pole (41), and the main body portion (1111) is electrically connected to the first pole lug (21).

6. The battery according to claim 4, It is characterized in that The second current collecting plate (112) comprises a main body (1121), a connecting portion (1122) and a welding portion (1123); the main body (1121) is connected to the welding portion (1123) via the connecting portion (1122); the connecting portion (1122) is bendable; and the insulating member (113) is provided with an avoidance area (1131) corresponding to the connecting portion (1122).

7. The battery according to claim 6, It is characterized in that The main body (1121) is electrically connected to the second pole tab (22), and the welding portion (1123) is electrically connected to the top cover (4).

8. The battery according to claim 4, It is characterized in that The top cover (4) is provided with a first barrier (42) and a second barrier (43); the pole (41) is insulated and connected to the top cover (4) via the first barrier (42); and the second barrier (43) is protruding from a side of the top cover (4) close to the busbar (1).

9. The battery according to any one of claims 1 to 2, It is characterized in that The first pole lug (21) and the second pole lug (22) are respectively arranged on two sides of the battery core (2) along the height direction (H).

10. The battery according to claim 9, It is characterized in that The insulating baffle (12) is arranged at the edge of the disk body (11) and is circumferentially arranged around the disk body (11); along the height direction (H), the insulating baffle (12) extends toward the direction close to the battery core (2); the pole (41) is insulated and connected to the top cover (4); the first pole lug (21) is electrically connected to the pole (41) through the disk body (11); and the second pole lug (22) is electrically connected to the shell (3).

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