A cylindrical battery

Abstract

The application discloses a cylindrical battery with a first direction, comprising a shell, an electric core, a top cover assembly and an insulating piece, the shell has a containing cavity with an opening on one side along the first direction, the electric core comprises a body, a positive electrode lug and a negative electrode lug, the body is arranged in the containing cavity, the positive electrode lug and the negative electrode lug are connected to one end of the body facing the opening, the top cover assembly comprises a top cover sheet, a positive electrode column and a negative electrode column penetrating the top cover sheet, the top cover sheet covers the opening and is connected to the shell, the positive electrode column is electrically connected to the positive electrode lug, the negative electrode column is electrically connected to the negative electrode lug, the insulating piece comprises a main body part and a separation part, the main body part is connected to one side of the top cover sheet facing the body, the positive electrode column and the negative electrode column penetrate the main body part, the separation part is connected to one side of the main body part facing the body, and the separation part separates the positive electrode column and the negative electrode column. The application separates the positive electrode column and the negative electrode column through the separation part, increases the creepage distance between the positive electrode column and the negative electrode column, improves the insulation performance between the positive electrode column and the negative electrode column, and improves the safety of the cylindrical battery.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a cylindrical battery. Background Technology

[0002] In related technologies, cylindrical battery cells have positive and negative terminals at both ends. One of the terminals is electrically connected to the casing, and the current needs to be conducted through the casing, which makes the internal resistance of the cylindrical battery relatively large. Utility Model Content

[0003] This application aims to provide a cylindrical battery that can solve the problem that the cylindrical battery cell has a positive terminal and a negative terminal at both ends, one of which is electrically connected to the casing, and the current needs to be conducted through the casing, resulting in a large internal resistance of the cylindrical battery.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides a cylindrical battery with a first orientation, including a casing, a cell, a top cover assembly, and an insulating component. The casing has a receiving cavity with an opening on one side along the first orientation. The cell includes a body, a positive electrode tab, and a negative electrode tab. The body is disposed in the receiving cavity, and the positive and negative electrode tabs are connected to the end of the body facing the opening. The top cover assembly includes a top cover plate and a positive and negative electrode post passing through the top cover plate. The top cover plate covers the opening and is connected to the casing. The positive electrode post is electrically connected to the positive electrode tab, and the negative electrode post is electrically connected to the negative electrode tab. The insulating component includes a main body portion and a separating portion. The main body portion is connected to the side of the top cover plate facing the body, and the positive and negative electrode posts pass through the main body portion. The separating portion is connected to the side of the main body portion facing the body, and the separating portion separates the positive and negative electrode posts.

[0005] Optionally, the insulating member further includes a protrusion connected to the side of the main body facing the body, the protrusion being arranged circumferentially around at least a portion of the main body, and the protrusion abutting against the body.

[0006] Optionally, the two ends of the partition are connected to the protrusion, the protrusion and the main body form a receiving groove, the partition is disposed in the receiving groove and divides the receiving groove into a first groove and a second groove; the positive terminal is disposed in the first groove, the negative terminal is disposed in the second groove, and the end of the positive terminal facing the main body does not extend beyond the end of the protrusion facing the main body.

[0007] Optionally, the end of the negative terminal facing the body does not extend beyond the end of the protrusion facing the body.

[0008] Optionally, the outer peripheral surface of the protrusion is inclined from the edge of the main body toward the center of the main body.

[0009] Optionally, at least one of the partition and the protrusion is integrally formed with the main body.

[0010] Optionally, it further includes a first adapter, which is disposed between the positive terminal and the positive tab, with one side of the first adapter connected to the positive terminal and the other side of the first adapter connected to the positive tab.

[0011] Optionally, it also includes a second adapter, which is disposed between the negative terminal and the negative tab, with one side of the second adapter connected to the negative terminal and the other side of the second adapter connected to the negative tab.

[0012] Optionally, the first adapter or the second adapter includes a first connecting portion, a second connecting portion, and a bending portion, wherein the first connecting portion and the second connecting portion are spaced apart along the first direction, and the bending portion is connected between the first connecting portion and the second connecting portion; the first connecting portion of the first adapter is connected to the positive terminal, and the second connecting portion of the first adapter is connected to the positive tab; the first connecting portion of the second adapter is connected to the negative terminal, and the second connecting portion of the second adapter is connected to the negative tab.

[0013] Optionally, a gap is formed between the first connecting portion and the second connecting portion, the first connecting portion is provided with a liquid guiding hole extending along the first direction, the liquid guiding hole communicating with the receiving cavity through the gap; the positive electrode post is provided with a liquid injection hole extending along the first direction, the liquid injection hole communicating with the liquid guiding hole.

[0014] Optionally, the housing includes a bottom wall disposed opposite to the opening, a portion of the bottom wall protruding toward the receiving cavity to form a support portion, and the body abutting against the support portion.

[0015] Optionally, a portion of the bottom wall is recessed in a direction away from the receiving cavity to form a recessed portion, the recessed portion having a thinning area on the side away from the receiving cavity, the thinning area extending circumferentially along the bottom wall.

[0016] In the embodiments of this application, by connecting the positive and negative tabs to the same end of the main body, the positive tab is electrically connected to the positive terminal, and the negative tab is electrically connected to the negative terminal. In this way, the cylindrical battery can achieve electrical connection with external electrical components through the positive and negative terminals. The current of the cylindrical battery can be conducted to the external electrical components via the negative tab-negative terminal and the positive tab-positive terminal, preventing the current from passing through the casing, thereby shortening the current transmission path and reducing the internal resistance of the cylindrical battery. Simultaneously, by connecting the main body of the insulating member to the side of the top cover facing the main body, the top cover is insulated from the main body. By connecting the separator to the side of the main body facing the main body, the separator separates the positive and negative terminals, increasing the creepage distance between the positive and negative terminals, thereby improving the insulation performance between the positive and negative terminals and enhancing the safety of the cylindrical battery.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below, wherein: Figure 1 This is a three-dimensional structural diagram of a cylindrical battery according to an embodiment of this application; Figure 2 This is a cross-sectional view of a cylindrical battery according to an embodiment of this application. Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a three-dimensional structural diagram of the positive electrode post according to an embodiment of this application; Figure 6 This is a three-dimensional structural diagram of the negative electrode post according to an embodiment of this application; Figure 7 This is a three-dimensional structural diagram of the insulating component according to an embodiment of this application; Figure 8 This is a three-dimensional structural diagram of the first adapter according to an embodiment of this application.

[0019] Figure label: 10. Shell; 11. Receiving cavity; 12. Opening; 13. Bottom wall; 131. Support part; 132. Recessed part; 133. Thinning area; 20. Cell; 21. Body; 22. Positive tab; 23. Negative tab; 30. Top cover assembly; 31. Top cover plate; 32. Positive post; 33. Negative post; 331. First metal part; 332. Second metal part; 34. Liquid injection hole; 40. Insulating part; 41. Main body; 42. Separator; 43. Protrusion; 44. Receiving groove; 60. First adapter; 61. First connecting part; 611. Liquid guide hole; 62. Second connecting part; 63. Bending part; 631. Bending notch; 64. Gap; 70. Second adapter; X, First direction. Detailed Implementation

[0020] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] The cylindrical battery provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0025] like Figures 1 to 4 As shown, this application embodiment proposes a cylindrical battery with a first direction X, including a housing 10, a cell 20, a top cover assembly 30, and an insulating member 40. The housing 10 has a receiving cavity 11 with an opening 12 on one side along the first direction X. The cell 20 includes a body 21, a positive electrode tab 22, and a negative electrode tab 23. The body 21 is disposed in the receiving cavity 11, and the positive electrode tab 22 and the negative electrode tab 23 are connected to the end of the body 21 facing the opening 12. The top cover assembly 30 includes a top cover plate 31 and a component passing through the top cover plate 31. The positive terminal 32 and the negative terminal 33 are connected to the housing 10. The top cover plate 31 covers the opening 12 and connects to the housing 10. The positive terminal 32 is electrically connected to the positive terminal 22, and the negative terminal 33 is electrically connected to the negative terminal 23. The insulating member 40 includes a main body 41 and a partition 42. The main body 41 is connected to the side of the top cover plate 31 facing the main body 21. The positive terminal 32 and the negative terminal 33 pass through the main body 41. The partition 42 is connected to the side of the main body 41 facing the main body 21 and separates the positive terminal 32 and the negative terminal 33.

[0026] In this embodiment, by connecting the positive tab 22 and the negative tab 23 to the same end of the body 21, the positive tab 22 is electrically connected to the positive terminal 32, and the negative tab 23 is electrically connected to the negative terminal 33. In this way, the cylindrical battery can achieve electrical connection with external electrical components through the positive terminal 32 and the negative terminal 33. The current of the cylindrical battery can be conducted to the external electrical components via the negative tab 23-negative terminal 33 and the positive tab 22-positive terminal 32, preventing the current from passing through the casing 10, thereby shortening the current transmission path and reducing the internal resistance of the cylindrical battery. Meanwhile, the main body 41 of the insulating member 40 is connected to the side of the top cover 31 facing the body 21, so that the top cover 31 is insulated from the body 21. The separator 42 is connected to the side of the main body 41 facing the body 21, and the separator 42 separates the positive terminal 32 and the negative terminal 33, which can increase the creepage distance between the positive terminal 32 and the negative terminal 33, thereby improving the insulation performance between the positive terminal 32 and the negative terminal 33 and improving the safety of the cylindrical battery.

[0027] like Figure 1 As shown, the cylindrical battery has a first direction X, which can be the height direction of the cylindrical battery.

[0028] like Figure 3 As shown, the housing 10 has a receiving cavity 11, and the receiving cavity 11 has an opening 12 on one side along the first direction X, so that the battery cell 20 can be inserted into the receiving cavity 11 through the opening 12.

[0029] like Figure 3 As shown, the body 21 of the battery cell 20 is disposed in the receiving cavity 11, and the positive electrode tab 22 and the negative electrode tab 23 are connected to the end of the body 21 facing the opening 12, so that the positive electrode tab 22 and the negative electrode tab 23 are located at the same end of the body 21.

[0030] like Figure 2 and Figure 3 As shown, the top cover plate 31 of the top cover assembly 30 is connected to the housing 10 and closes the opening 12 of the receiving cavity 11. The positive terminal 32 and the negative terminal 33 pass through the top cover plate 31, thereby connecting the inside and outside of the cylindrical battery. The positive terminal 32 is electrically connected to the positive tab 22, and the negative terminal 33 is electrically connected to the negative tab 23, realizing the corresponding connection between the terminal and the tab.

[0031] like Figure 3 As shown, the main body 41 of the insulating member 40 is connected to the side of the top cover 31 facing the body 21, thereby achieving insulation between the top cover 31 and the body 21. The partition 42 of the insulating member 40 is connected to the side of the main body 41 facing the body 21, and the partition 42 is located between the positive terminal 32 and the negative terminal 33, thereby separating the positive terminal 32 and the negative terminal 33.

[0032] For example, the insulating element 40 is made of an insulating material, such as plastic. Of course, the specific material of the insulating element 40 can be flexibly set according to the actual situation, and this application embodiment does not limit it in this regard.

[0033] It should be noted that, as Figure 3 As shown, since both the positive terminal 32 and the negative terminal 33 are inserted through the top cover plate 31, in order to achieve insulation between the positive terminal 32 and the top cover plate 31 and between the negative terminal 33 and the top cover plate 31, insulating materials can be provided between the positive terminal 32 and the top cover plate 31 and between the negative terminal 33 and the top cover plate 31, and insulation can be achieved through the insulating materials.

[0034] Optionally, such as Figure 3 and Figure 7 As shown, the insulating member 40 also includes a protrusion 43, which is connected to the side of the main body 41 facing the body 21. The protrusion 43 is arranged circumferentially around at least part of the main body 41 and abuts against the body 21.

[0035] In this embodiment, by connecting the protrusion 43 to the side of the main body 41 facing the body 21, and abutting against the body 21, the protrusion 43 can support the body 21, thereby preventing the body 21 from moving along the first direction X and maintaining the stability of the body 21. Simultaneously, the protrusion 43 is arranged circumferentially around at least a portion of the main body 41, which can separate the housing 10 from the positive terminal 32 and the negative terminal 33, improving the insulation between the positive terminal 32 and the negative terminal 33 and the housing 10.

[0036] It should be noted that the protrusion 43 is arranged circumferentially around at least part of the main body 41, meaning that the protrusion 43 can form an arc or a circle around the main body 41. The specific shape of the protrusion 43 can be flexibly set according to the actual situation, and this application embodiment does not limit it in this regard.

[0037] Optionally, such as Figure 7 As shown, the two ends of the partition 42 are connected to the protrusion 43. The protrusion 43 and the main body 41 enclose each other to form a receiving groove 44. The partition 42 is disposed in the receiving groove 44 and divides the receiving groove 44 into a first groove and a second groove. The positive electrode post 32 is disposed in the first groove and the negative electrode post 33 is disposed in the second groove. The end of the positive electrode post 32 facing the main body 21 does not extend beyond the end of the protrusion 43 facing the main body 21.

[0038] In this embodiment, by connecting the partition 42 and the protrusion 43, the protrusion 43 and the main body 41 form a receiving groove 44, which can accommodate the positive terminal 32 and the negative terminal 33. By dividing the receiving groove 44 into a first recess and a second recess by the partition 42, the first recess and the second recess can be used to accommodate the positive terminal 32 and the negative terminal 33, respectively. By ensuring that the end of the positive terminal 32 facing the main body 21 does not exceed the end of the protrusion 43 facing the main body 21, and that the length of the protrusion 43 along the first direction X is greater than the length of the positive terminal 32 along the first direction X, the positive terminal 32 and the housing 10 can be better separated.

[0039] Optionally, the end of the negative terminal 33 facing the body 21 does not extend beyond the end of the protrusion 43 facing the body 21.

[0040] In this embodiment, by ensuring that the end of the negative electrode post 33 facing the body 21 does not exceed the end of the protrusion 43 facing the body 21, and the length of the protrusion 43 along the first direction X is greater than the length of the negative electrode post 33 along the first direction X, the negative electrode post 33 and the housing 10 can be better separated.

[0041] Optionally, such as Figure 3 As shown, the outer peripheral surface of the protrusion 43 slopes from the edge of the main body 41 toward the center of the main body 41.

[0042] In this embodiment, by tilting the outer peripheral surface of the protrusion 43 from the edge of the main body 41 toward the center of the main body 41, the outer peripheral surface of the protrusion 43 forms a sloped structure, which can provide a certain degree of guidance. At the same time, the end of the protrusion 43 tilts inward toward the body 21, reducing its size, which facilitates the insertion of the insulating member 40 and the top cover assembly 30 into the receiving cavity 11 of the housing 10.

[0043] For example, the acute angle formed by the outer peripheral surface of the protrusion 43 and the first direction X can be 10 degrees, forming a slightly inclined structure.

[0044] Optionally, at least one of the partition portion 42 and the protrusion portion 43 is integrally formed with the main body portion 41.

[0045] In this embodiment of the application, by making at least one of the partition portion 42 and the protrusion portion 43 integrally formed with the main body portion 41, the connection strength between at least one of the partition portion 42 and the protrusion portion 43 and the main body portion 41 can be improved, while eliminating the need for subsequent assembly and simplifying the assembly steps.

[0046] It should be noted that the partition 42 and the protrusion 43 can be integrally formed with the main body 41 individually, or both can be integrally formed with the main body 41.

[0047] Optionally, such as Figure 3 As shown, the cylindrical battery also includes a first adapter 60, which is disposed between the positive terminal 32 and the positive tab 22. One side of the first adapter 60 is connected to the positive terminal 32, and the other side of the first adapter 60 is connected to the positive tab 22.

[0048] In this embodiment of the application, by providing a first adapter 60 between the positive terminal 32 and the positive terminal 22, the connection difficulty of the positive terminal 32 and the positive terminal 22 is reduced, and the connection of the positive terminal 32 and the positive terminal 22 is made easier.

[0049] It should be noted that in some embodiments, the positive electrode tab 22 is made of aluminum foil, and the positive electrode post 32 is also made of aluminum. Therefore, to facilitate welding of the positive electrode tab 22 and the positive electrode post 32 to the first adapter 60, the first adapter 60 can also be made of aluminum, using the same material as the positive electrode tab 22 and the positive electrode post 32, which facilitates welding. Moreover, aluminum has good conductivity and a low price, which can appropriately reduce costs while achieving conductivity.

[0050] Optionally, such as Figure 3 As shown, the cylindrical battery also includes a second adapter 70, which is disposed between the negative terminal 33 and the negative terminal tab 23. One side of the second adapter 70 is connected to the negative terminal 33, and the other side of the second adapter 70 is connected to the negative terminal tab 23.

[0051] In this embodiment, by providing a second adapter 70 between the negative terminal 33 and the negative terminal tab 23, the connection difficulty between the negative terminal 33 and the negative terminal tab 23 is reduced, making it easier to connect the negative terminal 33 and the negative terminal tab 23.

[0052] It should be noted that, as Figure 6 As shown, in some embodiments, the negative electrode tab 23 is made of copper foil, and the negative electrode post 33 can be welded from two conductive metals. For example, it can be welded from a first metal part 331 facing away from the body 21 and a second metal part 332 facing the body 21. The first metal part 331 can be made of aluminum, and the second metal part 332 can be made of copper. The second adapter 70 can also be made of copper, which is the same material as the negative electrode tab 23 and the second metal part 332, making welding easier and improving welding strength. Moreover, using aluminum for the first metal part 331 can reduce the manufacturing cost of the negative electrode post 33.

[0053] Optionally, such as Figure 8 As shown, the first adapter 60 or the second adapter 70 includes a first connecting portion 61, a second connecting portion 62, and a bending portion 63. The first connecting portion 61 and the second connecting portion 62 are spaced apart along a first direction X, and the bending portion 63 is connected between the first connecting portion 61 and the second connecting portion 62. The first connecting portion 61 in the first adapter 60 is connected to the positive terminal 32, and the second connecting portion 62 in the first adapter 60 is connected to the positive terminal tab 22. The first connecting portion 61 in the second adapter 70 is connected to the negative terminal 33, and the second connecting portion 62 in the second adapter 70 is connected to the negative terminal tab 23.

[0054] In this embodiment, by connecting the bending portion 63 to the first connecting portion 61 and the second connecting portion 62, the bending connection between the first connecting portion 61 and the second connecting portion 62 is easily achieved. The first connecting portion 61 is connected to the pole post, and the second connecting portion 62 is connected to the pole tab, thereby achieving a corresponding connection between the pole post and the pole tab.

[0055] Specifically, such as Figure 8 As shown, the first connecting part 61, the second connecting part 62, and the bending part 63 can all be sheet-like structures. A bending notch 631 can be provided on the bending part 63 to facilitate bending. Moreover, the sheet-like structure allows the first connecting part 61 to have a sufficiently large contact area with the pole post, and the second connecting part 62 to the pole lug, thereby improving the connection strength.

[0056] Optionally, such as Figure 5 and Figure 8As shown, a gap 64 is formed between the first connecting part 61 and the second connecting part 62. The first connecting part 61 is provided with a liquid guiding hole 611 that extends through the first direction X. The liquid guiding hole 611 communicates with the receiving cavity 11 through the gap 64. The positive electrode post 32 is provided with a liquid injection hole 34 that extends through the first direction X. The liquid injection hole 34 communicates with the liquid guiding hole 611.

[0057] In this embodiment, a liquid guiding hole 611 is provided in the first connecting portion 61, which connects the gap 64 between the first connecting portion 61 and the second connecting portion 62 to the receiving cavity 11. An injection hole 34 is provided in the positive electrode post 32, which connects to the liquid guiding hole 611. Electrolyte can be injected through the injection hole 34, and after flowing through the liquid guiding hole 611, the electrolyte reaches the gap 64 and then flows into the receiving cavity 11, thus realizing the injection of electrolyte.

[0058] It should be noted that the injection hole 34 is located on the positive electrode post 32, rather than in other areas of the top cover plate 31, which saves space on the top cover plate 31. Since the negative electrode post 33 is welded from two metals, the injection hole 34 is located on the positive electrode post 32, which avoids the problem of electrolyte corrosion of the contact surface of the two metals that might occur if a hole were made on the negative electrode post 33.

[0059] Optionally, such as Figure 4 As shown, the housing 10 includes a bottom wall 13 disposed opposite to the opening 12, a portion of the bottom wall 13 protruding toward the receiving cavity 11 to form a support portion 131, and the body 21 abuts against the support portion 131.

[0060] In this embodiment of the application, by providing a support portion 131 on the bottom wall 13, the body 21 abuts against the support portion 131, which can prevent the body 21 from contacting the edge of the bottom wall 13 and prevent wear on the body 21.

[0061] It should be noted that the housing 10 includes a bottom wall 13 and a side wall. The connection between the bottom wall 13 and the side wall forms a rounded corner, so that the side wall bends inward near the bottom wall 13. By providing a support part 131 on the bottom wall 13, the support part 131 supports the body 21, which can prevent the body 21 from contacting the rounded corner.

[0062] Optionally, such as Figure 4 As shown, a portion of the bottom wall 13 is recessed in the direction away from the receiving cavity 11 to form a recessed portion 132. The recessed portion 132 has a thinning area 133 on the side away from the receiving cavity 11, and the thinning area 133 extends circumferentially along the bottom wall 13.

[0063] In this embodiment, by providing a thinning region 133 in the recessed portion 132, the thickness of the thinning region 133 can be made smaller. When the pressure inside the cylindrical battery is high, the thinning region 133 can break open due to the pressure difference between the inside and outside, thereby releasing the pressure inside the cylindrical battery and restoring the pressure inside the cylindrical battery to a safe range, thus avoiding accidents such as explosions that may occur due to excessive pressure inside the cylindrical battery.

[0064] In some embodiments, the middle portion of the bottom wall 13 may protrude inward to form a support portion 131, and the area of ​​the bottom wall 13 surrounding the support portion 131 may be recessed outward to form a recessed portion 132, and the thinning area 133 may be provided around the middle support portion 131.

[0065] Of course, there can be multiple support portions 131 and recessed portions 132 provided on the bottom wall 13. The support portion 131 can stably support the body 21, and the recessed portion 132 can provide a thinning area 133. The specific number and position of the support portion 131 and recessed portion 132 can be flexibly set according to the actual situation. This application embodiment does not limit this.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A cylindrical battery having a first orientation (X), characterized in that, include: The housing (10) has a receiving cavity (11) with an opening (12) on one side along the first direction (X). The battery cell (20) includes a body (21), a positive electrode tab (22) and a negative electrode tab (23). The body (21) is disposed in the receiving cavity (11). The positive electrode tab (22) and the negative electrode tab (23) are connected to the end of the body (21) facing the opening (12). The top cover assembly (30) includes a top cover plate (31) and a positive terminal (32) and a negative terminal (33) passing through the top cover plate (31). The top cover plate (31) covers the opening (12) and connects to the housing (10). The positive terminal (32) is electrically connected to the positive terminal (22), and the negative terminal (33) is electrically connected to the negative terminal (23). The insulating component (40) includes a main body (41) and a partition (42). The main body (41) is connected to the side of the top cover plate (31) facing the body (21). The positive terminal (32) and the negative terminal (33) are inserted through the main body (41). The partition (42) is connected to the side of the main body (41) facing the body (21). The partition (42) separates the positive terminal (32) and the negative terminal (33).

2. The cylindrical battery according to claim 1, characterized in that, The insulating member (40) further includes a protrusion (43) connected to the side of the main body (41) facing the body (21), the protrusion (43) being arranged circumferentially around at least a portion of the main body (41), and the protrusion (43) abutting against the body (21).

3. The cylindrical battery according to claim 2, characterized in that, The two ends of the partition (42) are connected to the protrusion (43), the protrusion (43) and the main body (41) surround to form a receiving groove (44), the partition (42) is disposed in the receiving groove (44) and divides the receiving groove (44) into a first groove and a second groove. The positive terminal (32) is disposed in the first groove, and the negative terminal (33) is disposed in the second groove. The end of the positive terminal (32) facing the body (21) does not extend beyond the end of the protrusion (43) facing the body (21), and / or, the end of the negative terminal (33) facing the body (21) does not extend beyond the end of the protrusion (43) facing the body (21).

4. The cylindrical battery according to claim 2, characterized in that, The outer peripheral surface of the protrusion (43) is inclined from the edge of the main body (41) toward the center of the main body (41).

5. The cylindrical battery according to claim 2, characterized in that, At least one of the partition (42) and the protrusion (43) is integrally formed with the main body (41).

6. The cylindrical battery according to any one of claims 1 to 5, characterized in that, It also includes a first adapter (60), which is disposed between the positive terminal post (32) and the positive terminal tab (22). One side of the first adapter (60) is connected to the positive terminal post (32), and the other side of the first adapter (60) is connected to the positive terminal tab (22). And / or, it also includes a second adapter (70) disposed between the negative terminal post (33) and the negative terminal tab (23), with one side of the second adapter (70) connected to the negative terminal post (33) and the other side of the second adapter (70) connected to the negative terminal tab (23).

7. The cylindrical battery according to claim 6, characterized in that, The first adapter (60) or the second adapter (70) includes a first connecting part (61), a second connecting part (62) and a bending part (63), the first connecting part (61) and the second connecting part (62) are spaced apart along the first direction (X), and the bending part (63) is connected between the first connecting part (61) and the second connecting part (62); The first connecting part (61) in the first adapter (60) is connected to the positive terminal (32), and the second connecting part (62) in the first adapter (60) is connected to the positive terminal (22). The first connecting part (61) in the second adapter (70) is connected to the negative terminal post (33), and the second connecting part (62) in the second adapter (70) is connected to the negative terminal tab (23).

8. The cylindrical battery according to claim 7, characterized in that, A gap (64) is formed between the first connecting part (61) and the second connecting part (62). The first connecting part (61) is provided with a liquid guiding hole (611) that extends through the first direction (X). The liquid guiding hole (611) communicates with the receiving cavity (11) through the gap (64). The positive electrode post (32) is provided with a liquid injection hole (34) extending along the first direction (X), and the liquid injection hole (34) is connected to the liquid guiding hole (611).

9. The cylindrical battery according to any one of claims 1 to 5, characterized in that, The housing (10) includes a bottom wall (13) disposed opposite to the opening (12), a portion of the bottom wall (13) protruding toward the receiving cavity (11) to form a support (131), and the body (21) abuts against the support (131).

10. The cylindrical battery according to claim 9, characterized in that, Part of the bottom wall (13) is recessed in a direction away from the receiving cavity (11) to form a recess (132), the recess (132) having a thinning area (133) on the side away from the receiving cavity (11), the thinning area (133) extending circumferentially along the bottom wall (13).

Images