Battery and battery pack

Abstract

The utility model provides a battery and a battery pack, the battery comprises a shell, a top cover, a battery cell, a positive pole post and a negative pole post, the top cover is covered on the shell, the top cover and the shell jointly define a mounting space, the top cover is provided with two mounting plates facing the shell, the two mounting plates are oppositely arranged, the battery cell is arranged in the mounting space, and the positive pole post and the negative pole post are arranged in the mounting space. The two mounting plates are arranged on two sides of the battery cell, one ends of the positive pole and the negative pole are electrically connected with the battery cell, the other ends of the positive pole and the negative pole penetrate through the mounting plates in the first direction and extend to the outside of the mounting space, and the positive pole is used for being electrically connected with the negative pole of an adjacent battery in an inserted mode. The battery and the battery pack provided by the utility model can solve the problems in the prior art that the whole structure is complicated and the product is scrapped due to poor welding because the batteries are connected in series or in parallel by sheet welding.

Description

Technical Field

[0001] The utility model relates to the technical field of battery-related structures, and in particular to a battery and a battery pack. Background Art

[0002] In the prior art, a pole is provided on the top of the battery for electrical connection with adjacent batteries. When a plurality of batteries are arranged inside the battery pack, the current mainstream design method is to use busbar welding to connect the plurality of batteries in series or in parallel. The use of welding to achieve series and parallel connection has a complex overall operation process and requires a busbar as a bridge for welding, resulting in a large number of parts. At the same time, the use of busbar welding to achieve series and parallel connection between a plurality of batteries may lead to product scrapping due to poor welding.

[0003] As can be seen from the above, the current series or parallel connection of batteries requires bar welding, which makes the overall structure complicated and there is a problem of product scrapping due to poor welding. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery to solve the problem that the series or parallel connection of batteries in the prior art requires welding of the bars, resulting in a complex overall structure and the possibility of product scrapping due to poor welding.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery is provided, which includes a shell; a top cover, which is arranged on the shell and together with the shell encloses an installation space, and the top cover is provided with two mounting plates facing the shell, and the two mounting plates are arranged opposite to each other; a battery cell, the battery cell is arranged inside the installation space, and the two mounting plates are arranged on both sides of the battery cell; a positive pole and a negative pole, the positive pole and the negative pole are arranged opposite to each other, one end of the positive pole is electrically connected to the positive electrode sheet of the battery cell, and the other end passes through a mounting plate and extends to the outside of the installation space; one end of the negative pole is electrically connected to the negative electrode sheet of the battery cell, and the other end passes through another mounting plate and extends to the outside of the installation space, and the positive pole is used to be plugged into the negative pole of an adjacent battery to achieve electrical connection.

[0006] Furthermore, the two mounting plates are spaced apart along the first direction, and two opposite side surfaces of the shell body along the first direction both have notches, and the mounting plates extend into the inside of the notches and cover the notches.

[0007] Furthermore, the top cover includes a main body plate section and a mounting plate bent on the main body plate section, and both mounting plates have through holes, and the positive pole and the negative pole extend out of the mounting space through the through holes.

[0008] Further, the mounting plate is arranged in the middle area of ​​the main body plate section along the second direction, and the second direction is perpendicular to the first direction.

[0009] Furthermore, an insulating layer is provided on the top cover; and / or the battery further includes an insulating gasket, and an insulating gasket is provided between the positive electrode column and the via hole, and between the negative electrode column and the via hole.

[0010] Furthermore, the battery further comprises an explosion-proof valve, which is arranged on the body plate section, and the explosion-proof valve and the mounting plate are staggered along the second direction.

[0011] Furthermore, one of the positive electrode column and the negative electrode column has a protrusion structure extending in a direction away from the installation space, and the other of the positive electrode column and the negative electrode column has a groove structure opening in a direction away from the installation space, and the protrusion structure and the groove structure can be plugged into and matched with each other.

[0012] Furthermore, the protrusion structure is a racetrack-type structure, and the groove structure is a racetrack-type groove structure.

[0013] Furthermore, the battery also includes a first clamping portion, which is arranged on the outer peripheral surface of the protruding structure; a second clamping portion, which is arranged on the inner surface of the groove structure, and one of the first clamping portion and the second clamping portion is a tenon, and the other is a slot that is clamped with the tenon.

[0014] According to another aspect of the utility model, a battery pack is provided, which includes the above-mentioned battery, wherein a plurality of batteries are provided, the plurality of batteries are stacked and electrically connected along a first direction, and the positive pole of one of two adjacent batteries is plugged into the negative pole of the other battery.

[0015] Applying the technical solution of the utility model, the battery includes a shell, a top cover, a battery cell, a positive electrode post and a negative electrode post. The top cover is arranged on the shell, and the top cover and the shell together enclose an installation space. The top cover has two mounting plates arranged in the direction facing the shell, and the two mounting plates are arranged opposite to each other. The battery cell is arranged inside the installation space, and the two mounting plates are arranged on both sides of the battery cell. One end of the positive electrode post and the negative electrode post are electrically connected to the battery cell, and the other end extends to the outside of the installation space along the mounting plate. The positive electrode post is used to be plugged in with the negative electrode post of an adjacent battery to achieve electrical connection.

[0016] From the above, it can be seen that the battery of the present application adopts a setting structure in which the positive electrode column and the negative electrode column are respectively arranged on both sides of the battery cell, so that when the batteries are connected in series or in parallel, the electrical connection between the exposed positive electrode column and the exposed negative electrode column can be achieved to complete the plug-in matching between the two adjacent batteries. The present application does not need to adopt the means of bar welding in the prior art. The present application simplifies the overall structure and reduces the use of parts, optimizes the assembly process, is simple to operate, and improves assembly efficiency.

[0017] The present application uses a structure of multiple stacked battery plug-in mating to facilitate the assembly and disassembly of the batteries, thereby adaptively adjusting the number of batteries inside the battery pack, simplifying the process, and helping to improve operational efficiency.

[0018] The positive pole of the present application and the negative pole of the adjacent battery adopt a structure in which a tenon and a slot cooperate, which is beneficial to enhance the stability of the connection between the batteries, thereby ensuring the stability of the electrical connection between the batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a battery of the utility model is shown;

[0021] Figure 2 An exploded view of a battery of the present invention is shown;

[0022] Figure 3 A schematic diagram of the three-dimensional structure of the top cover of the utility model at a first angle is shown;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of the top cover of the utility model at a second angle is shown;

[0024] Figure 5 The schematic diagram of the structure of the negative electrode column of the utility model is shown;

[0025] Figure 6 A schematic diagram of the matching structure of two adjacent batteries of the utility model is shown;

[0026] Figure 7 Shows a side view of two adjacent batteries of the present invention;

[0027] Figure 8 A cross-sectional view showing a connection structure of two adjacent batteries of the present invention;

[0028] Fig. 9 A schematic diagram of a stacked matching structure of multiple batteries of the utility model is shown;

[0029] Fig.10 An exploded view of the battery pack of the present invention is shown.

[0030] The above drawings include the following reference numerals:

[0031] 10. Shell; 110. Notch; 20. Top cover; 210. Main body plate section; 220. Mounting plate; 30. Battery cell; 40. Positive pole; 410. Slot structure; 420. Card slot; 50. Negative pole; 510. Tenon; 60. Explosion-proof valve. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0035] Embodiment 1

[0036] In order to solve the problem in the prior art that the series or parallel connection of batteries requires welding of bars, which leads to a complex overall structure and the possibility of product scrapping due to poor welding, the present embodiment provides a battery, which overcomes the problems existing in the prior art by improving the battery.

[0037] like Figures 1 to 9 As shown, the battery includes a shell 10, a top cover 20, a battery cell 30, a positive electrode post 40 and a negative electrode post 50. The top cover 20 is covered on the shell 10, and the top cover 20 and the shell 10 jointly enclose an installation space. The top cover 20 is provided with two mounting plates 220 in the direction of the shell 10, and the two mounting plates 220 are arranged opposite to each other along a first direction. The battery cell 30 is arranged inside the installation space, and the two mounting plates 220 are arranged on both sides of the battery cell 30. The positive electrode post 40 and the negative electrode post 50 are arranged opposite to each other. One end of the positive electrode post 40 is electrically connected to the positive electrode sheet of the battery cell 30, and the other end passes through a mounting plate 220 to extend to the outside of the installation space; one end of the negative electrode post 50 is electrically connected to the negative electrode sheet of the battery cell 30, and the other end passes through another mounting plate 220 to extend to the outside of the installation space. The positive electrode post 40 is used to be plugged with the negative electrode post 50 of the adjacent battery to achieve electrical connection.

[0038] Specifically, the battery provided in the embodiment of the present application arranges the positive electrode column 40 and the negative electrode column 50 on opposite sides of the battery, and then when adjacent batteries are connected in series or in parallel, the electrical connection between the exposed positive electrode column 40 and the exposed negative electrode column 50 can be achieved to complete the plug-in fit between the two adjacent batteries. The present application does not need to adopt the means of bar welding in the prior art. The present application simplifies the overall structure, reduces the use of parts, optimizes the assembly process, is simple to operate, and improves assembly efficiency.

[0039] Among them, the present application uses a structure of multiple stacked battery plug-in cooperation to facilitate the disassembly and assembly of the batteries, and then can adaptively adjust the number of batteries inside the battery pack, simplify the process, and help improve operational efficiency.

[0040] Furthermore, the shell 10 is a structure with a top opening, and the top cover 20 is disposed at the top opening of the shell 10 , and the top cover 20 and the shell 10 enclose an installation space.

[0041] Furthermore, the two mounting plates 220 are spaced apart along the first direction, and preferably the two mounting plates 220 extend toward one side of the two large surfaces of the shell 10, so that the two mounting plates 220 are arranged at the two large surfaces, and the positive pole 40 and the negative pole 50 are also relatively arranged on the large surface of the battery. In the process of composing the battery pack, the large surfaces of two adjacent batteries are arranged relatively, and the positive pole 40 of one battery and the negative pole 50 of the other battery are plugged into each other to realize the electrical connection of the two adjacent batteries, thereby realizing the electrical connection of the battery pack.

[0042] In this embodiment, the two oppositely disposed side surfaces of the housing 10 along the first direction are provided with notches 110, the mounting plate 220 extends into the notch 110 and covers the notch 110, the notch 110 is used to provide an escape and installation space for the mounting plate 220, and the outer surface of the mounting plate 220 in this embodiment is coplanar with the outer surface of the housing 10, so that the mounting plate 220 will not overlap with the housing 10, causing the mounting plate 220 to protrude from the housing 10. The mounting plate 220 of the present application will not protrude from the housing 10, so as to achieve seamless fit and improve the overall aesthetics.

[0043] The first direction is Figure 2 The X direction is shown, and the second direction is Figure 2 The Y direction is shown, and the third direction is Figure 2 In the Z direction shown, the first direction, the second direction and the third direction are perpendicular to each other. The third direction is the height direction of the housing 10, and the top cover 20 is provided at one end of the housing 10 along the third direction.

[0044] like Figures 3 to 5As shown, the top cover 20 includes a body plate section 210 and a mounting plate 220 bent and arranged on the body plate section 210, and the mounting plate 220 has a through hole, and the positive pole column 40 and the negative pole column 50 are both electrically connected to the battery cell 30 at one end, and the other end passes through the through hole and extends out of the mounting space. Specifically, one end of the positive pole column 40 is electrically connected to the positive pole ear of the battery cell 30, and the other end of the positive pole column passes through the through hole of a mounting plate of the top cover 20 and extends out of the mounting space; one end of the negative pole column 50 is electrically connected to the negative pole ear of the battery cell 30, and the other end of the negative pole column passes through the through hole of another mounting plate of the top cover 20 and extends out of the mounting space. The positive pole column 40 and the negative pole column 50 are arranged opposite to each other in the first direction to ensure that the positive pole column 40 and the negative pole column 50 can match when two adjacent batteries are electrically connected.

[0045] The mounting plate 220 extends along the third direction.

[0046] Specifically, the via hole provides an escape space for the positive electrode column 40 and the negative electrode column 50 , so as to facilitate a portion of the positive electrode column 40 and the negative electrode column 50 to be exposed through the via hole.

[0047] Among them, the through holes on the two mounting plates 220 are linearly aligned along the first direction to achieve alignment between the positive pole 40 of one of the two adjacent batteries and the negative pole 50 of the other battery along the first direction to achieve plug-in matching of the positive pole 40 and the negative pole 50 of the two batteries.

[0048] Furthermore, the main body plate section 210 and the mounting plate 220 are an integrated structure, which has high strength and thus strong installation stability. At the same time, the main body plate section 210 and the mounting plate 220 of the integrated structure are also easy to manufacture.

[0049] Further, the mounting plate 220 is disposed in the middle region of the body plate section 210 along the second direction.

[0050] In this embodiment, the battery further includes an insulating gasket, and an insulating gasket is provided between the positive pole 40 and the via hole, and between the negative pole 50 and the via hole. By providing the insulating gasket, the insulating top cover 20 and the two poles are further insulated to avoid the phenomenon of cross-current.

[0051] It should be noted that the top cover 20 is made of aluminum. In order to prevent the top cover 20 from discharging externally, an insulating layer is provided on the top cover 20 to improve the safety of use. The insulating layer can be formed by attaching an insulating sheet or an insulating film.

[0052] like Figures 1 to 9As shown, the battery further includes an explosion-proof valve 60 , which is disposed on the body plate segment 210 , and the explosion-proof valve 60 and the mounting plate 220 are staggered along the second direction.

[0053] Among them, a mounting hole is opened on the main body plate section 210 along the second direction and is offset and arranged on one side of the mounting plate 220 . The mounting hole is communicated with the mounting space, and the explosion-proof valve 60 is arranged at the mounting hole.

[0054] Specifically, by means of staggered mounting holes, the explosion-proof valve 60 is staggered with the positive pole 40 and the negative pole 50, and the positions of the positive pole 40, the negative pole 50 and the explosion-proof valve 60 are reasonably arranged. The explosion-proof valve 60 is staggered with the positive pole 40 and the negative pole 50, so that the top space of the positive pole 40 and the negative pole 50 can be used for arranging FPC or wiring harness, which is beneficial to improving space utilization.

[0055] The explosion-proof valve 60 is provided to further improve the safety of the battery structure.

[0056] like Figures 6 to 9 As shown, one of the positive electrode column 40 and the negative electrode column 50 has a protrusion structure extending in a direction away from the installation space, and the other of the positive electrode column 40 and the negative electrode column 50 has a groove structure 410 with an opening facing away from the installation space, and the protrusion structure and the groove structure 410 can be plugged into and matched with each other.

[0057] The protrusion structure and the groove structure 410 both extend in the first direction, and the protrusion structure and the groove structure 410 are respectively arranged on both sides of the battery cell 30 in the first direction. When multiple batteries are arranged and electrically connected in the first direction, two adjacent batteries are electrically connected by plugging the protrusion structure and the groove structure 410, that is, the protrusion structure and the groove structure 410 of the two adjacent batteries are arranged in alignment and can be plugged in.

[0058] The positive pole 40 is welded to the positive pole tab at the part located inside the installation space, and the negative pole 50 is welded to the negative pole tab at the part located inside the installation space. The specific connection method between the pole and the tab is not limited in the embodiment of the present application.

[0059] It should be noted that the protrusion structure protrudes along the first direction, and the protrusion structure is located outside the installation space; the notch of the groove structure 410 is arranged toward the first direction, and the notch of the groove structure 410 is located outside the installation space. The protrusion structure located outside the installation space is used to plug and match with the groove structure 410 of the adjacent battery, and the protrusion structure plugged and matched in the first direction contacts at least a portion of the groove structure 410 to achieve electrical connection.

[0060] Preferably, the protruding structure contacts the bottom surface of the groove structure 410 along the first direction.

[0061] Specifically, two adjacent batteries are plugged in through the protrusion structure and the groove structure 410, that is, the protrusion structure of one of the two adjacent batteries is inserted into the groove structure 410 of the other battery to electrically connect the positive electrode column 40 and the negative electrode column 50, thereby realizing the connection of the two batteries in series.

[0062] Furthermore, the protrusion structure is a racetrack structure, and the groove structure 410 is a racetrack groove structure. Of course, it is not limited to the above-mentioned racetrack structure. The protrusion structure can also be a cube, a cylinder, etc., and the corresponding groove structure has a rectangular structure matching the cube, a circular structure matching the cylinder, etc.

[0063] It can be understood that the groove structure 410 of the present application is a protrusion structure inserted into the insertion space to achieve at least a portion of the protrusion structure can be inserted into the interior of the groove structure 410. Among them, one of the positive pole 40 and the negative pole 50 provides a protrusion structure located outside the installation space, and the other provides a groove structure 410. The structure of the positive pole 40 and the negative pole 50 being located inside the installation space is not limited.

[0064] Preferably, the positive electrode column 40 has a groove structure 410, and the negative electrode column 50 has a protrusion structure.

[0065] It should be noted that the runway shape is formed by a first straight segment, a first arc segment, a second straight segment and a second arc segment formed in sequence from beginning to end, and the first straight segment and the second straight segment are parallel and spaced apart.

[0066] In a specific implementation of this embodiment, both the positive pole 40 and the negative pole 50 are of a racetrack structure, the positive pole 40 has a groove structure 410, and the negative pole 50 has a convex structure. A racetrack-shaped groove structure 410 is provided on the surface of the positive pole 40 facing away from the negative pole 50 along the first direction; the portion of the positive pole 40 located inside the installation space and the portion located outside the installation space have the same structure, both of which are of a racetrack structure.

[0067] In this embodiment, the battery also includes a first clamping portion and a second clamping portion, the first clamping portion is arranged on the outer peripheral surface of the protruding structure, and the second clamping portion is arranged on the inner surface of the groove structure 410, one of the first clamping portion and the second clamping portion is a tenon 510, and the other is a slot 420 that is clamped with the tenon 510.

[0068] The positive pole 40 of the present application and the negative pole 50 of the adjacent battery adopt a structure in which the tenon 510 and the slot 420 cooperate with each other, which is beneficial to enhance the stability of the connection between the batteries and thereby ensure the stability of the electrical connection between the batteries.

[0069] The structure of the tenon 510 and the slot 420 can lock the positive pole 40 and the negative pole 50 that are plugged in, avoiding the phenomenon of tripping that affects the overall electrical connection structure.

[0070] Embodiment 2

[0071] This embodiment provides a battery pack, which includes the battery in the first embodiment.

[0072] like Figures 6 to 10 As shown, a plurality of batteries are provided, and the plurality of batteries are stacked and electrically connected along a first direction to form a battery pack, and the positive pole 40 of one of two adjacent batteries is plugged into and matched with the negative pole 50 of the other battery.

[0073] In this embodiment, the battery pack includes one or more battery groups, and two adjacent batteries in each battery group are electrically connected through a plug-in structure, which is conducive to the removal and installation of the batteries, and further facilitates the replacement and repair of some batteries individually.

[0074] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0075] 1. The battery of the present application adopts a setting structure in which the positive electrode column 40 and the negative electrode column 50 are respectively arranged on both sides of the battery cell 30, so that when the batteries are connected in series or in parallel, the electrical connection between the exposed positive electrode column 40 and the exposed negative electrode column 50 can be achieved to complete the plug-in matching between two adjacent batteries. The present application does not need to adopt the means of bar welding in the prior art. The present application has the advantages of simplifying the overall structure, reducing the use of parts, optimizing the assembly process, simplifying the operation, and improving the assembly efficiency.

[0076] 2. The present application uses a structure of multiple stacked batteries for plug-in cooperation, which facilitates the disassembly and assembly of the batteries, and can adaptively adjust the number of batteries inside the battery pack, simplifying the process and helping to improve operational efficiency.

[0077] 3. The positive pole 40 of the present application and the negative pole 50 of the adjacent battery adopt a structure in which the tenon 510 and the slot 420 cooperate with each other, which is conducive to enhancing the stability of the connection between the batteries, thereby ensuring the stability of the electrical connection between the batteries.

[0078] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0080] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0081] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery, characterized in that: include: Housing (10); A top cover (20), the top cover (20) being arranged on the shell (10) and forming a mounting space together with the shell (10), the top cover (20) being arranged with two mounting plates (220) in a direction facing the shell (10), and the two mounting plates (220) being arranged opposite to each other; A battery core (30), the battery core (30) being arranged inside the installation space, and the two installation plates (220) being arranged on both sides of the battery core (30); A positive pole (40) and a negative pole (50), wherein the positive pole (40) and the negative pole (50) are arranged opposite to each other, one end of the positive pole (40) is electrically connected to the positive electrode sheet of the battery cell (30), and the other end passes through one of the mounting plates (220) and extends to the outside of the mounting space; one end of the negative pole (50) is electrically connected to the negative electrode sheet of the battery cell (30), and the other end passes through another of the mounting plates (220) and extends to the outside of the mounting space, and the positive pole (40) is used to be plugged into the negative pole (50) of the adjacent battery to achieve electrical connection.

2. The battery according to claim 1, characterized in that The two mounting plates (220) are spaced apart along a first direction, and two oppositely disposed side surfaces of the shell (10) along the first direction both have notches (110), and the mounting plates (220) extend into the interior of the notches (110) and cover the notches (110).

3. The battery according to claim 1, characterized in that The top cover (20) comprises a main body plate section (210) and a mounting plate (220) bent and arranged on the main body plate section (210), and both mounting plates (220) have through holes, and the positive pole (40) and the negative pole (50) extend out of the mounting space through the through holes.

4. The battery according to claim 3, characterized in that The mounting plate (220) is arranged in a middle area of ​​the main body plate section (210) along a second direction, and the second direction is perpendicular to the first direction.

5. The battery according to claim 3, characterized in that The top cover (20) has an insulating layer; and / or The battery further comprises an insulating gasket, and the insulating gasket is arranged between the positive electrode column (40) and the via hole, and between the negative electrode column (50) and the via hole.

6. The battery according to claim 3, characterized in that The battery further comprises an explosion-proof valve (60), wherein the explosion-proof valve (60) is arranged on the body plate section (210), and the explosion-proof valve (60) and the mounting plate (220) are staggered along the second direction.

7. The battery according to any one of claims 1 to 6, characterized in that One of the positive electrode column (40) and the negative electrode column (50) has a protruding structure extending in a direction away from the installation space, and the other of the positive electrode column (40) and the negative electrode column (50) has a groove structure (410) opening away from the installation space, and the protruding structure and the groove structure (410) can be plugged into and matched with each other.

8. The battery according to claim 7, characterized in that The protrusion structure is a racetrack-shaped structure, and the groove structure (410) is a racetrack-shaped groove structure (410).

9. The battery according to claim 7, characterized in that The battery also includes: A first clamping portion, wherein the first clamping portion is disposed on an outer peripheral surface of the protruding structure; A second clamping portion, wherein the second clamping portion is arranged on the inner surface of the groove structure (410), and one of the first clamping portion and the second clamping portion is a tenon (510), and the other is a clamping groove (420) that is clamped and matched with the tenon (510).

10. A battery pack, characterized in that: The battery pack comprises a battery as described in any one of claims 1 to 9, wherein a plurality of the batteries are provided, the plurality of the batteries are stacked and electrically connected along a first direction, and the positive electrode post (40) of one of two adjacent batteries and the negative electrode post (50) of the other battery are plugged into each other.

Images