Shell assembly and battery

Abstract

The shell assembly comprises a conductive shell, the conductive shell is provided with a containing cavity, the two ends, in the first direction, of the containing cavity are provided with a first opening end and a second opening end respectively, a first installation face is formed on the conductive shell, and the first installation face is arranged perpendicular to the first direction; a first mounting hole is formed in the first mounting surface; the first cover plate and the second cover plate respectively cover the first opening end and the second opening end; the negative pole piece and the positive pole piece are connected to the first mounting surface; the positive pole piece does not make contact with the first cover plate and comprises a positive pole column, the positive pole column extends into the first mounting hole, the end, away from the second cover plate, of the positive pole column is insulated from the conductive shell through a first insulating piece, and the other end of the positive pole column is insulated from the second cover plate through a second insulating piece; the second insulating part is located in the accommodating cavity. The utility model also discloses a battery. According to the utility model, the thickness of the shell can be effectively reduced, and the requirements of thin battery products can be better met.

Description

Technical Field

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

[0002] Lithium-ion batteries have been widely used and adopted in recent years due to their safety, stability, and durability. Existing lithium batteries typically consist of a housing and a cover, with the positive and negative electrodes mounted on the housing. This makes existing square or polygonal battery housings relatively thick. However, some electronic products require thinner batteries to function properly. For example, foldable phones require ultra-thin batteries, but existing battery structures cannot meet these requirements. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to reduce the thickness of the battery so that the battery can meet the needs of more electronic products.

[0004] In order to solve the above technical problems, the utility model provides a housing assembly, comprising:

[0005] A conductive housing having a receiving cavity, wherein the receiving cavity is provided with a first open end and a second open end at two ends along a first direction, a first mounting surface is formed on the conductive housing, the first mounting surface is arranged perpendicular to the first direction, and a first mounting hole is provided on the first mounting surface and communicates with the receiving cavity;

[0006] a first cover plate, the first cover plate being connected to the conductive housing and covering the first open end;

[0007] a second cover plate, the second cover plate being connected to the conductive housing and covering the second open end;

[0008] a negative electrode member connected to the first mounting surface;

[0009] a positive electrode member connected to the first mounting surface and not in contact with the first cover plate, the positive electrode member including a positive electrode post extending into the first mounting hole, one end of the positive electrode post facing away from the second cover plate being insulated from the conductive housing by a first insulating member, and the other end of the positive electrode post being insulated from the second cover plate by a second insulating member;

[0010] Wherein, the first insulating member and the second insulating member are both connected to the conductive shell, and the second insulating member is located in the accommodating cavity.

[0011] In one embodiment of the present invention, the first mounting surface is located between the first cover plate and the second cover plate, and the first cover plate and the second cover plate are both parallel to the first mounting surface.

[0012] In one embodiment of the present invention, one end portion of the conductive housing protrudes outward to form a first protruding portion, and the first mounting surface is formed on the first protruding portion.

[0013] In one embodiment of the present invention, the end of the conductive housing forming the first protrusion also has a first notch.

[0014] In one embodiment of the present invention, one end portion of the conductive housing protrudes inward to form a second protruding portion, and the first mounting surface is formed on the second protruding portion.

[0015] In one embodiment of the present invention, the second protrusion has a corner notch in a direction perpendicular to the protruding direction.

[0016] In one embodiment of the present invention, the second protrusion has no corner notch in a direction perpendicular to the protruding direction.

[0017] In one embodiment of the present invention, the first insulating member includes a cylindrical portion, which is at least partially located in the first mounting hole. The second insulating member includes an upper insulating portion and a lower insulating portion that are oppositely arranged. The upper insulating portion and the lower insulating portion are connected by a transition insulating portion. A first gap is formed between the upper insulating portion and the lower insulating portion. The upper insulating portion is provided with a first through hole. One end of the positive electrode column extends into the cylindrical portion and passes through the first through hole into the first gap.

[0018] In one embodiment of the present invention, the positive electrode member further includes a first end plate and a second end plate, the positive electrode column is located between the first end plate and the second end plate, the outer peripheral edges of the first end plate and the second end plate both exceed the outer peripheral edge of the positive electrode column, the upper end of the cylindrical portion of the first insulating member extends toward the periphery to form an insulating plate body, and the insulating plate body is provided with a countersunk hole connected to the cylindrical portion, the insulating plate body is located on the upper part of the first mounting surface, the first end plate is located in the countersunk hole, the second end plate is located in the first gap, the upper insulating portion of the second insulating member is located between the first mounting surface and the second end plate, and the lower insulating portion is located between the second end plate and the second cover plate.

[0019] In one embodiment of the present invention, a conductive extension plate is further connected between the upper insulating portion and the second end plate, and the positive electrode column is connected to the conductive extension plate.

[0020] In one embodiment of the present invention, a liquid injection hole communicating with the accommodating cavity is further provided on the first mounting surface, and the liquid injection hole is blocked by a liquid blocking plug.

[0021] In one embodiment of the present invention, the first mounting surface has a stepped surface, the positive electrode member is located on one side of the stepped surface, and the negative electrode member is located on the other side of the stepped surface.

[0022] In one embodiment of the present invention, the distance between the top surface of the first cover plate and the bottom surface of the second cover plate is 1 to 4 mm.

[0023] The present utility model also discloses a battery, comprising a battery cell and a shell assembly as described in any one of the above items, wherein the battery cell is located in the accommodating cavity of the conductive shell, the positive electrode of the battery cell is connected to the positive electrode component, and the negative electrode of the battery cell is connected to the negative electrode component.

[0024] The above technical solution of the utility model has the following advantages compared with the prior art:

[0025] The shell assembly and battery described in the present invention can effectively reduce the thickness of the shell, so that the thickness of the battery can be made thinner, which can better meet the needs of thin battery products. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the battery structure of the first embodiment of the present invention;

[0028] Figure 2 yes Figure 1 A top view of the structure shown;

[0029] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0030] Figure 4 yes Figure 3 A partial enlarged view of the M in the middle;

[0031] Figure 5 yes Figure 3 yes Figure 2 Cross-sectional view at the middle BB;

[0032] Figure 6 yes Figure 1 Exploded view of the structure shown

[0033] Figure 7 yes Figure 1Schematic diagram of the structure of the battery after removing the first cover plate and the second cover plate;

[0034] Figure 8 yes Figure 7 A schematic diagram of the structure from another angle;

[0035] Figure 9 yes Figure 7 Exploded view of the structure shown

[0036] Figure 10 This is a schematic structural diagram of the first insulating member in the present utility model;

[0037] Figure 11 This is a schematic structural diagram of the second insulating member in the present utility model;

[0038] Figure 12 is a schematic diagram of a battery structure of a second embodiment of the present utility model;

[0039] Figure 13 yes Figure 12 A top view of the structure shown;

[0040] Figure 14 yes Figure 13 Cross-sectional view at CC;

[0041] Figure 15 yes Figure 12 Exploded view of the structure shown

[0042] Figure 16 yes Figure 12 Schematic diagram of the structure of the battery after removing the first cover plate and the second cover plate;

[0043] Figure 17 yes Figure 16 A schematic diagram of the structure from another angle;

[0044] Figure 18 yes Figure 16 Exploded view of the structure shown;

[0045] Figure 19 Schematic diagram of the battery structure of the third embodiment of the present utility model;

[0046] Figure 20 yes Figure 19 A top view of the structure shown;

[0047] Figure 21 yes Figure 20 Cross-sectional view at DD in the middle;

[0048] Figure 22 yes Figure 19 Exploded view of the structure shown

[0049] Figure 23 yes Figure 19 Schematic diagram of the structure of the battery after removing the first cover plate and the second cover plate;

[0050] Figure 24 yes Figure 23 A schematic diagram of the structure from another angle;

[0051] Description of the accompanying drawings:

[0052] 10. Conductive housing; 101. Accommodating cavity; 102. First opening end; 103. Second opening end; 104. First mounting surface; 1041. First mounting hole; 1042. Liquid injection hole; 1043. Step surface; 105. First protrusion; 106. First notch; 107. Second notch; 108. Second protrusion; 1081. Angled notch;

[0053] 20. First cover plate;

[0054] 30. Second cover plate;

[0055] 40. Negative electrode;

[0056] 50, positive electrode member; 501, positive electrode column; 502, first end plate; 503, second end plate;

[0057] 60. Conductive extension plate; 601. Second through hole;

[0058] 70, first insulating member; 701, cylindrical portion; 702, insulating plate; 7021, countersunk hole;

[0059] 80, second insulating member; 801, upper insulating portion; 8011, first through hole; 802, lower insulating portion; 803, transition insulating portion; 804, first gap;

[0060] 90. Liquid blocking plug; 100. Gasket; 110. Battery cell. DETAILED DESCRIPTION

[0061] The present invention is further described below with reference to the accompanying drawings and specific embodiments to enable those skilled in the art to better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. It is apparent that the embodiments described are only some of the embodiments of the present disclosure, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present disclosure, its application, or use.

[0062] In the description of the present invention, it should be understood that the terms "vertical", "upper", "lower", "top", "side", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0063] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0064] Example 1

[0065] See Figures 1-11 This embodiment discloses a housing assembly, including a conductive shell 10, a first cover plate 20, a second cover plate 30, a negative electrode member 40 and a positive electrode member 50; in the figure, the X, Y, and Z directions are mutually perpendicular directions, wherein the Z direction is the first direction, which is also the height direction / thickness direction. It can be understood that in the embodiment, "vertical", "up", "down", "top", "bottom", etc. are all along the first direction - Z direction, referring to "up", "down", "top", and "bottom" along the first direction.

[0066] The conductive housing 10 has a receiving cavity 101 for accommodating the battery cell. The receiving cavity 101 has a first open end 102 and a second open end 103 at both ends along the first direction, each of which has an opening. A first mounting surface 104 is formed on the conductive housing 10. The first mounting surface 104 is arranged perpendicular to the first direction and has a first mounting hole 1041 connected to the receiving cavity 101.

[0067] The first cover plate 20 is connected to the conductive housing 10 and covers the first open end 102; the second cover plate 30 is connected to the conductive housing 10 and covers the second open end 103, so that the conductive housing 10 is sealed by the cover plates;

[0068] The negative electrode member 40 is connected to the first mounting surface 104;

[0069] The positive electrode member 50 is connected to the first mounting surface 104 and does not contact the first cover plate 20 so that the positive electrode member 50 and the first cover plate 20 are insulated and isolated;

[0070] The positive electrode member 50 includes a positive electrode post 501, which extends into the first mounting hole 1041. One end of the positive electrode post 501 facing away from the second cover plate 30 is insulated from the conductive housing 10 by the first insulating member 70, that is, this end is insulated from the housing in the area where the first mounting surface 104 is located. The other end of the positive electrode post 501 is insulated from the second cover plate 30 by the second insulating member 80.

[0071] The first insulating member 70 and the second insulating member 80 are both connected to the conductive housing 10 , and the second insulating member 80 is located in the accommodating cavity 101 .

[0072] Specifically, the first insulating member 70 and the second insulating member 80 are both connected to the housing in the area where the first mounting surface 104 is located.

[0073] The battery shell in the conventional prior art generally has an opening only at one end of the accommodating cavity, and the positive and negative electrode members 40 are directly mounted on the outer peripheral side wall of the shell, which is parallel to the first direction. This structure will limit the thickness (i.e., height) of the shell, making the shell thicker. However, the solution of this embodiment changes the shell structure, provides two open ends and provides a first mounting surface 104 perpendicular to the first direction, and mounts the positive and negative electrode members on the first mounting surface, thereby effectively reducing the shell thickness, making the shell thickness thinner. In addition, in the prior art, the accommodating cavity is provided with only one open end, for example, only the bottom end is open and the top end is not open. Since its shell is generally made by a stamping and stretching process, there will be an arc chamfer between its top surface and the outer peripheral side wall. In order to avoid the arc chamfer and the internal battery cell interference, the battery cell size can only be made smaller. However, in this embodiment, by providing open ends at both ends, the above-mentioned arc chamfer will not appear, thereby making more effective use of the space of the accommodating cavity, increasing the battery cell size while avoiding the above-mentioned interference phenomenon, which is conducive to increasing the battery capacity.

[0074] It can be understood that in the above structure, the negative electrode member 40 is directly connected to the conductive shell 10. At this time, the conductive shell 10 and the negative electrode member 40 are used as a negative electrode, while the positive electrode member 50 needs to be insulated and isolated from the conductive shell 10.

[0075] The first cover plate 20 and the second cover plate 30 can both be made of stainless steel plates, and the conductive housing 10 can also be made of stainless steel.

[0076] The negative electrode member 40 may be a nickel sheet, and the positive electrode member 50 may be an aluminum member.

[0077] In some embodiments, the first mounting surface 104 is located between the first cover plate 20 and the second cover plate 30, and both the first cover plate 20 and the second cover plate 30 are parallel to the first mounting surface 104. This means that the first mounting surface 104 is lower than the first cover plate 20, which is more conducive to improving space utilization and making the housing thinner.

[0078] In this embodiment, one end portion of the conductive housing 10 protrudes outward to form a first protruding portion 105 , and a first mounting surface 104 is formed on the first protruding portion 105 .

[0079] In some embodiments, as Figure 7 As shown, one end of the conductive housing 10 where the first protrusion 105 is formed also has a first notch 106 to facilitate subsequent assembly and fixation.

[0080] A second notch 107 may also be provided on the end of the conductive housing 10 opposite to the first protrusion 105 as needed.

[0081] In some embodiments, the first insulating member 70 includes a cylindrical portion 701, and the cylindrical portion 701 is at least partially located in the first mounting hole 1041. Figure 4 and Figure 11 As shown, the second insulating member 80 includes an upper insulating portion 801 and a lower insulating portion 802 arranged opposite to each other, the upper insulating portion 801 and the lower insulating portion 802 are connected by a transition insulating portion 803, a first gap 804 is formed between the upper insulating portion 801 and the lower insulating portion 802, and the upper insulating portion 801 is provided with a first through hole 8011; one end of the positive electrode column 501 extends into the cylindrical portion 701 and passes through the first through hole 8011 into the first gap 804.

[0082] The above structure insulates the upper portion of the positive electrode post 501 from the region of the housing where the first mounting surface 104 is located via the cylindrical portion 701 of the first insulating member 70. The upper insulating portion 801 of the second insulating member 80 further ensures insulation in this region. The lower portion of the positive electrode post 501 is insulated from the lower second cover plate 30 via the lower insulating portion 802 of the second insulating member 80. Therefore, the arrangement of the first insulating member 70 and the second insulating member 80 above can more reliably ensure insulation between the positive electrode member 50 and the conductive housing 10 and the second cover plate 30.

[0083] In some embodiments, as Figure 4 and Figure 9 As shown, the positive electrode member 50 further includes a first end plate 502 and a second end plate 503. The positive electrode column 501 is located between the first end plate 502 and the second end plate 503. The outer peripheral edges of the first end plate 502 and the second end plate 503 extend beyond the outer peripheral edge of the positive electrode column 501 to facilitate better positioning.

[0084] like Figure 4 and Figure 10 As shown, the upper end of the cylindrical portion 701 of the first insulating member 70 extends outward to form an insulating plate body 702. The insulating plate body 702 is provided with a countersunk hole 7021 that communicates with the cylindrical portion 701. The insulating plate body 702 is located above the first mounting surface 104, and the first end plate 502 is located in the countersunk hole 7021 to achieve insulation isolation from the first mounting surface 104.

[0085] The second end plate 503 is located in the first gap 804, the upper insulating portion 801 of the second insulating member 80 is located between the first mounting surface 104 and the second end plate 503 to better achieve insulation isolation between the positive electrode column 501 and the conductive shell 10, and the lower insulating portion 802 is located between the second end plate 503 and the second cover plate 30 to achieve insulation isolation between the second end plate 503 and the second cover plate 30.

[0086] The cylindrical portion 701 and insulating plate 702 of the first insulating member 70 can be integrally formed; the first end plate 502, the second end plate 503, and the positive electrode column 501 of the positive electrode member 50 can also be integrally formed. The positive electrode member 50 can be connected to the second insulating member 80 by riveting.

[0087] Furthermore, a conductive extension plate 60 is connected between the upper insulating portion 801 and the second end plate 503 , and the positive electrode column 501 and the conductive extension plate 60 are connected to better connect the positive electrode member 50 and the positive electrode of the battery cell through the conductive extension plate 60 .

[0088] The conductive extension plate 60 may be made of an aluminum sheet.

[0089] Preferably, a second through hole 601 may be provided on the conductive extension plate 60 , and the positive electrode column 501 passes through the second through hole 601 .

[0090] In some embodiments, as Figure 9 As shown, the first mounting surface 104 is further provided with a liquid injection hole 1042 communicating with the accommodating cavity 101 to facilitate injecting electrolyte into the accommodating cavity 101. The liquid injection hole 1042 is blocked by a liquid blocking plug 90. The liquid blocking plug 90 can be welded to the first mounting surface 104 through the gasket 100.

[0091] In some embodiments, as Figure 7 As shown, the first mounting surface 104 has a stepped surface 1043, that is, the first mounting surface 104 has two uneven parts, the positive electrode member 50 is located on one side of the stepped surface 1043, and the negative electrode member 40 is located on the other side of the stepped surface 1043. This makes it easier to assemble and position the subsequent electrode assembly.

[0092] Furthermore, the negative electrode member 40 and the liquid blocking plug 90 may be disposed on the same side of the step surface 1043. Figure 7 As shown, the negative electrode member 40 and the liquid blocking plug 90 can be both arranged on the lower side of one side of the step surface 1043, and the positive electrode member 50 can be arranged on the higher side of the other side; the opposite arrangement can also be adopted.

[0093] In some embodiments, as Figure 7 As shown, the liquid blocking plug 90 may be disposed between the positive electrode member 50 and the negative electrode member 40 .

[0094] In some embodiments, a distance H between the top surface of the first cover plate 20 and the bottom surface of the second cover plate 30 is 1 to 4 mm.

[0095] This embodiment also discloses a battery, comprising a battery cell and a shell assembly as described in any of the above schemes, wherein the battery cell is located in the accommodating cavity 101 of the conductive shell 10, the positive electrode of the battery cell is connected to the positive electrode member 50, and the negative electrode of the battery cell is connected to the negative electrode member 40.

[0096] The battery of the above embodiment is thin overall, with a thickness of 1 to 4 mm, which can better meet the demand for thin and light battery products.

[0097] Example 2

[0098] See Figures 12-18 The main difference between this embodiment and the first embodiment is that one end portion of the conductive housing 10 protrudes inward to form a second protruding portion 108, and the first mounting surface 104 is formed on the second protruding portion 108. The second protruding portion 108 has a corner notch in a direction perpendicular to the protruding direction.

[0099] like Figure 12 and Figure 16 As shown, the second protrusion 108 is located at the corner of the shell, the protruding direction of the second protrusion 108 is the Y direction, and a corner notch is set in the X direction. That is, in this way, the second protrusion 108 not only has a notch facing the opposite direction of the Y direction, but also has a corner notch facing the opposite direction of the X direction.

[0100] This embodiment also discloses a battery, comprising a battery cell and a shell assembly as described in any of the above schemes, wherein the battery cell is located in the accommodating cavity 101 of the conductive shell 10, the positive electrode of the battery cell is connected to the positive electrode member 50, and the negative electrode of the battery cell is connected to the negative electrode member 40.

[0101] Example 3

[0102] See Figures 19-24The main difference between this embodiment and the first embodiment is that one end portion of the conductive housing 10 protrudes inward to form a second protruding portion 108, and the first mounting surface 104 is formed on the second protruding portion 108. The second protruding portion 108 does not have a corner notch in a direction perpendicular to the protruding direction.

[0103] like Figure 1 and Figure 23 As shown, the second protrusion 108 is located near the middle of one end of the shell, and the protruding direction of the second protrusion 108 is the Y direction. It has side walls on both sides of the X direction and no corner notches. That is, in this manner, the second protrusion 108 only has a notch facing the opposite direction of the Y direction.

[0104] This embodiment also discloses a battery, comprising a battery cell and a shell assembly as described in any of the above schemes, wherein the battery cell is located in the accommodating cavity 101 of the conductive shell 10, the positive electrode of the battery cell is connected to the positive electrode member 50, and the negative electrode of the battery cell is connected to the negative electrode member 40.

[0105] All of the above optional technical solutions can be combined in any way to form optional embodiments of the present invention, that is, any multiple embodiments can be combined to meet the needs of different application scenarios. They are all within the scope of protection of this application and will not be described in detail here.

[0106] It should be noted that the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A housing assembly, characterized in that: include, A conductive housing having a receiving cavity, wherein the receiving cavity is provided with a first open end and a second open end at two ends along a first direction, a first mounting surface is formed on the conductive housing, the first mounting surface is arranged perpendicular to the first direction, and a first mounting hole is provided on the first mounting surface and communicates with the receiving cavity; a first cover plate, the first cover plate being connected to the conductive housing and covering the first open end; a second cover plate, the second cover plate being connected to the conductive housing and covering the second open end; a negative electrode member connected to the first mounting surface; a positive electrode member connected to the first mounting surface and not in contact with the first cover plate, the positive electrode member including a positive electrode post extending into the first mounting hole, one end of the positive electrode post facing away from the second cover plate being insulated from the conductive housing by a first insulating member, and the other end of the positive electrode post being insulated from the second cover plate by a second insulating member; Wherein, the first insulating member and the second insulating member are both connected to the conductive shell, and the second insulating member is located in the accommodating cavity.

2. The housing assembly according to claim 1, wherein: The first mounting surface is located between the first cover plate and the second cover plate, and the first cover plate and the second cover plate are both parallel to the first mounting surface.

3. The housing assembly according to claim 1, wherein: One end portion of the conductive shell protrudes outward to form a first protruding portion, and the first mounting surface is formed on the first protruding portion.

4. The housing assembly according to claim 3, wherein: One end of the conductive shell forming the first protrusion also has a first notch.

5. The housing assembly according to claim 1, wherein: One end portion of the conductive housing protrudes inward to form a second protruding portion, and the first mounting surface is formed on the second protruding portion.

6. The housing assembly according to claim 5, wherein: The second protrusion has a corner notch in a direction perpendicular to the protruding direction.

7. The housing assembly according to claim 5, wherein: The second protrusion has no corner notch in a direction perpendicular to the protruding direction.

8. The housing assembly according to claim 1, wherein: The first insulating member includes a cylindrical portion, which is at least partially located in the first mounting hole. The second insulating member includes an upper insulating portion and a lower insulating portion arranged opposite to each other. The upper insulating portion and the lower insulating portion are connected by a transition insulating portion. A first gap is formed between the upper insulating portion and the lower insulating portion. The upper insulating portion is provided with a first through hole. One end of the positive electrode column extends into the cylindrical portion and passes through the first through hole into the first gap.

9. The housing assembly according to claim 8, wherein: The positive electrode component also includes a first end plate and a second end plate, the positive electrode column is located between the first end plate and the second end plate, the outer peripheral edges of the first end plate and the second end plate both exceed the outer peripheral edge of the positive electrode column, the upper end of the cylindrical portion of the first insulating component extends toward the periphery to form an insulating plate body, and a countersunk hole connected to the cylindrical portion is provided on the insulating plate body. The insulating plate body is located on the upper part of the first mounting surface, the first end plate is located in the countersunk hole, and the second end plate is located in the first gap. The upper insulating portion of the second insulating component is located between the first mounting surface and the second end plate, and the lower insulating portion is located between the second end plate and the second cover plate.

10. The housing assembly according to claim 9, wherein: A conductive extension plate is further connected between the upper insulating portion and the second end plate, and the positive electrode column is connected to the conductive extension plate.

11. The housing assembly according to claim 1, wherein: The first mounting surface is further provided with a liquid injection hole communicating with the accommodating cavity, and the liquid injection hole is blocked by a liquid blocking plug.

12. The housing assembly according to claim 1, wherein: The first mounting surface has a stepped surface, the positive electrode member is located on one side of the stepped surface, and the negative electrode member is located on the other side of the stepped surface.

13. The housing assembly according to claim 1, wherein: The distance between the top surface of the first cover plate and the bottom surface of the second cover plate is 1 to 4 mm.

14. A battery, characterized in that: It comprises a battery cell and a shell assembly according to any one of claims 1 to 13, wherein the battery cell is located in the accommodating cavity of the conductive shell, the positive electrode of the battery cell is connected to the positive electrode member, and the negative electrode of the battery cell is connected to the negative electrode member.

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