Battery shell and battery

Abstract

The battery shell is used for the battery, the battery comprises an output assembly, the battery shell comprises a shell body, one end of the shell body along a first direction is opened to form an opening, and a mounting space is arranged in the shell body and used for mounting a pole group; the output assembly is arranged at the end, away from the opening, of the shell body and connected with the shell body. And the cover plate is arranged at the opening and used for blocking the opening. According to the battery shell disclosed by the utility model, the shell body plays a role in supporting and fixing the output assembly, so that the supporting and fixing functions of the cover plate on the output assembly can be reduced, and the requirement on the structural strength of the cover plate can be reduced when the cover plate is designed, so that the thickness of the cover plate can be reduced, and the cost of the cover plate is reduced; and the economical efficiency of the battery shell is facilitated.

Description

Technical Field

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

[0002] At present, the output components of the battery, such as the positive and negative connecting pieces and connecting blocks, the upper insulating piece, the lower insulating piece and the sealing ring, are all arranged on the cover body, and the output components are supported and fixed by the cover body. Therefore, the cover body needs to have sufficient strength. In order to ensure the strength of the cover body, the cover body needs to have sufficient thickness, but the corresponding manufacturing cost also increases, which is not conducive to the economy of the battery shell. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery housing, wherein the battery housing reduces the requirements on the structural strength of the cover plate when designing the cover plate, thereby reducing the thickness of the cover plate, thereby reducing the cost of the cover plate, and facilitating the economy of the battery housing.

[0004] The utility model also provides a battery, comprising the battery housing mentioned above.

[0005] The battery case according to the embodiment of the utility model is used for a battery, and the battery includes an output assembly, and the battery case includes: a shell body, one end of the shell body along a first direction is open to form an open opening, the shell body has an installation space for installing a pole group, the output assembly is arranged at an end of the shell body away from the open opening and is connected to the shell body; and a cover plate, the cover plate is arranged at the open opening to seal the open opening.

[0006] According to the battery case of the embodiment of the utility model, the output component is arranged at the end of the shell body away from the open mouth and connected to the shell body, and the cover plate is arranged at the open mouth to block the open mouth, so that the shell body plays a supporting and fixing role for the output component, thereby making it possible to reduce the supporting and fixing role of the cover plate on the output component, so that when designing the cover plate, the requirements for the structural strength of the cover plate can be reduced, thereby reducing the thickness of the cover plate, thereby reducing the cost of the cover plate, which is beneficial to the economy of the battery case.

[0007] In some embodiments of the present invention, the cover plate includes: a cover body and a first protrusion, the cover body is connected to the shell body, and the first protrusion is arranged on a side of the cover body facing the pole group.

[0008] In some embodiments of the present utility model, the cover plate further includes: a second protrusion, which is provided on the side of the cover body facing the electrode group. The second protrusion is annular and is arranged around the first protrusion. The first protrusion and the second protrusion are spaced apart to form a first annular groove.

[0009] In some embodiments of the present utility model, the side of the cover body facing away from the electrode group has a groove.

[0010] In some embodiments of the present utility model, the side of the cover body facing away from the electrode group further has the second annular groove, and the second annular groove is arranged around the groove.

[0011] In some embodiments of the present utility model, the second annular groove is spaced apart from the groove, and the cover body between the second annular groove and the groove forms a third protrusion. The third protrusion is annular and is arranged around the groove.

[0012] In some embodiments of the present utility model, the first protrusion and the groove are oppositely arranged in the thickness direction of the cover body; and / or, the second protrusion and the second annular groove are oppositely arranged in the thickness direction of the cover body; and / or, the third protrusion and the first annular groove are oppositely arranged in the thickness direction of the cover body; and / or, the first annular groove and the second annular groove are arranged in a staggered manner in the thickness direction of the cover body; and / or, the first annular groove and the groove are arranged in a staggered manner in the thickness direction of the cover body.

[0013] In some embodiments of the present utility model, the cover body includes a connecting portion and a guiding portion. The guiding portion is provided on the side of the connecting portion facing the electrode group. The connecting portion is connected to the housing body. Along the direction from the connecting portion to the guiding portion, the peripheral wall of the guiding portion inclines towards the direction away from the inner peripheral wall of the housing body.

[0014] In some embodiments of the present utility model, an installation hole is provided at one end of the shell body facing away from the cover plate. The output assembly passes through the installation hole and includes: a connecting piece that passes through the installation hole and is connected to the tab of the electrode group; a first connecting block that is sleeved on the connecting piece and passes through the installation hole; a second connecting block that is provided at one end of the connecting piece away from the cover plate and is connected to both the connecting piece and the first connecting block; an upper insulating member and a lower insulating member. Along the thickness direction of the cover plate, the lower insulating member is provided on the side of the upper insulating member facing the cover plate, and at least part of the lower insulating member and at least part of the upper insulating member are provided between the first connecting block and the shell body; a sealing ring that passes through the installation hole and is provided between the first connecting block, the upper insulating member, the lower insulating member, and the shell body.

[0015] The battery according to an embodiment of the present utility model includes the above-mentioned battery housing.

[0016] For the battery according to an embodiment of the present utility model, by providing the above-mentioned battery housing, the output assembly is arranged at one end of the shell body facing away from the open end and is connected to the shell body, and the cover plate is arranged at the open end for sealing the open end, so that the shell body plays a role in supporting and fixing the output assembly. As a result, the cover plate can be relieved of the function of supporting and fixing the output assembly. When designing the cover plate, the requirement for the structural strength of the cover plate can be reduced, thereby the thickness of the cover plate can be reduced, and the cost of the cover plate can be lowered, which is beneficial to the economy of the battery housing.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0019] Figure 1 is a perspective view of the battery according to an embodiment of the present utility model;

[0020] Figure 2 is a cross-sectional view of the battery according to an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 an enlarged view of part A in

[0022] Figure 4 is Figure 2 an enlarged view of part B in

[0023] Figure 5 It is a perspective view of the cover plate of the battery housing according to an embodiment of the present utility model;

[0024] Figure 6 It is a perspective view of the cover plate of the battery housing from another perspective according to an embodiment of the present utility model;

[0025] Figure 7 It is a cross-sectional view of the cover plate of the battery housing according to an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 100, battery;

[0028] 10, battery housing;

[0029] 1, cover plate; 11, cover body; 111, connecting portion; 112, guiding portion; 12, first protrusion; 13, second protrusion; 14, third protrusion; 15, first annular groove; 16, second annular groove; 17, groove;

[0030] 2, housing body; 21, installation space;

[0031] 20, output assembly;

[0032] 201, connecting piece; 202, upper insulating member; 203, lower insulating member; 204, sealing ring; 205, first connecting block; 206, second connecting block;

[0033] 30, electrode group. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate 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 only for explaining the present utility model and should not be construed as limiting the present utility model.

[0035] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Reference below Figures 1-7 A battery housing 10 according to an embodiment of the present invention is described.

[0038] like Figures 1-7 As shown, according to the battery housing 10 of the embodiment of the present utility model, the battery housing 10 includes: a shell body 2 and a cover plate 1.

[0039] Specifically, refer to Figure 1 and Figure 2 The battery housing 10 is used for a battery 100, the battery 100 includes an output assembly 20, and the shell body 2 is along a first direction (such as Figure 1 One end of the shell body 2 (in the direction a shown in the figure) is open to form an open opening, and the shell body 2 has an installation space 21 for installing the pole group 30. The output component 20 is arranged at the end of the shell body 2 away from the open opening and is connected to the shell body 2, such as by riveting, and the cover plate 1 is arranged at the open opening to seal the open opening.

[0040] Among them, it should be noted that one end of the output component 20 facing the cover plate 1 is connected to the electrode group 30, and the other end of the output component 20 facing away from the cover plate 1 is connected to the electrical device, so as to realize power supply for the electrical device. There is also electrolyte in the installation space 21. The cover plate 1 is arranged at the open mouth, and the cover plate 1 is connected to the housing body 2, thereby realizing the sealing of the battery housing 10, avoiding the electrolyte from flowing out of the open mouth, and enabling the battery 100 to work normally.

[0041] It can be understood that by arranging the output component 20 at one end of the housing body 2 facing away from the open mouth and connecting it to the housing body 2, the output component 20 can be fixed on the housing body 2, and the housing body 2 can support the output component 20, avoiding the movement and deformation of the output component 20, and improving the reliability of the battery 100. At the same time, the bottom wall of the housing body 2 along the first direction and the peripheral wall of the housing body 2 are integrally formed parts. The overall force of the housing body 2 is good, the strength is reliable, and the stability is strong, thereby further ensuring the supporting and fixing effects on the output component 20.

[0042] Since the housing body 2 plays a role in supporting and fixing the output component 20, the cover plate 1 can subtract the supporting and fixing effects on the output component 20. Therefore, when designing the cover plate 1, the requirement for the structural strength of the cover plate 1 can be reduced, and thus the thickness of the cover plate 1 can be reduced (the thickness of the cover plate 1 has a greater impact on the structural strength of the cover plate 1), thereby reducing the cost of the cover plate 1, which is beneficial to the economy of the battery housing 10.

[0043] According to the battery housing 10 of the embodiment of the present invention, by arranging the output component 20 at one end of the housing body 2 facing away from the open mouth and connecting it to the housing body 2, and arranging the cover plate 1 at the open mouth for blocking the open mouth, the housing body 2 plays a role in supporting and fixing the output component 20, so that the cover plate 1 can subtract the supporting and fixing effects on the output component 20. When designing the cover plate 1, the requirement for the structural strength of the cover plate 1 can be reduced, and thus the thickness of the cover plate 1 can be reduced, thereby reducing the cost of the cover plate 1, which is beneficial to the economy of the battery housing 10.

[0044] In some embodiments of the present invention, as Figure 2 、 Figure 6 and Figure 7 shown, the cover plate 1 includes: a cover body 11 and a first protrusion 12. The cover body 11 is connected to the housing body 2, and the first protrusion 12 is arranged on one side of the cover body 11 facing the electrode group 30.

[0045] It can be understood that although the cover plate 1 of the present utility model no longer needs to fix and support the output component 20, in order to prevent the thickness of the cover plate 1 from being too small, resulting in too low structural strength of the cover plate 1, which may cause damage to the cover plate 1 when it is impacted and lead to seal failure, it is necessary to increase the strength of the cover plate 1 to a certain extent.

[0046] In the present utility model, by providing a first protrusion 12 on the side of the cover body 11 facing the electrode group 30, and the first protrusion 12 extends along the length direction of the cover body 11, the strength of the cover plate 1 is improved, so that the cover plate 1 has a certain structural strength, can withstand a certain impact force, improves the durability of the cover plate 1, and ensures the sealing effect of the battery 100.

[0047] Wherein, the projection plane of the first protrusion 12 perpendicular to the first direction completely falls within the projection plane of the cover body 11 perpendicular to the first direction, and the cross-section of the first protrusion 12 is smaller than the cross-section of the cover body 11, so as to avoid the volume of the first protrusion 12 being too large, which is beneficial to controlling the cost of the cover plate 1 and is beneficial to the economy of the battery housing 10.

[0048] Furthermore, the thickness of the cover body 11 along the first direction is 0.8 - 1.5 mm, such as 0.8 mm, 0.9 mm, 1 mm or 1.5 mm, etc. Thus, on one hand, the cover body 11 has a certain thickness, avoiding the thickness of the cover body 11 from being too small, ensuring the structural strength of the cover body 11 and improving the durability of the cover body 11. On the other hand, it also avoids the thickness of the cover body 11 from being too large, which is beneficial to controlling the cost of the cover plate 1 and is beneficial to the economy of the battery housing 10.

[0049] In some embodiments of the present utility model, as Figure 2 、 Figure 6 and Figure 7 shown, the cover plate 1 further includes: a second protrusion 13, the second protrusion 13 is provided on the side of the cover body 11 facing the electrode group 30, and the second protrusion 13 is annular and arranged around the first protrusion 12. Among them, the second protrusion 13 can be oval, circular or racetrack-shaped (a figure composed of two semi-circles protruding away from each other and two relatively arranged straight lines) and so on.

[0050] It can be understood that the setting of the second protrusion 13 further ensures the structural strength of the cover plate 1, improves the durability of the cover plate 1, and ensures the sealing effect of the battery 100. Wherein, the projection plane of the second protrusion 13 perpendicular to the first direction completely falls within the projection plane of the cover body 11 perpendicular to the second direction, and the cross-section of the second protrusion 13 is smaller than the cross-section of the cover body 11, so as to avoid the volume of the second protrusion 13 being too large, which is beneficial to controlling the cost of the cover plate 1 and is beneficial to the economy of the battery housing 10.

[0051] Furthermore, as Figure 2, Figure 6 and Figure 7 As shown, the first protrusion 12 and the second protrusion 13 are spaced apart to form a first annular groove 15. Thus, in the case of the cross-sections of the same first protrusion 12 and second protrusion 13, the area that the first protrusion 12 and the second protrusion 13 can cover is larger, thereby reducing the concentration of force, making the force-bearing condition of the cover plate 1 better, further improving the structural reliability of the cover plate 1, and enhancing the durability of the cover plate 1.

[0052] In some embodiments of the present utility model, as Figure 2 , Figure 5 and Figure 7 shown, one side of the cover body 11 facing away from the electrode group 30 has a groove 17. It can be understood that the groove 17 extends along the length direction of the cover body 11. The setting of the groove 17 reduces the volume of the cover body 11, thereby further reducing the cost of the cover body 11, which is beneficial to the economy of the battery housing 10.

[0053] In some embodiments of the present utility model, as Figure 2 , Figure 5 and Figure 7 shown, one side of the cover body 11 facing away from the electrode group 30 further has a second annular groove 16, and the second annular groove 16 is arranged around the groove 17. It can be understood that the setting of the second annular groove 16 further reduces the volume of the cover body 11, thereby further reducing the cost of the cover body 11, which is beneficial to the economy of the battery housing 10.

[0054] In some embodiments of the present utility model, as Figure 5 and Figure 7 shown, the second annular groove 16 is spaced apart from the groove 17, and the cover body 11 between the second annular groove 16 and the groove 17 forms a third protrusion 14. The third protrusion 14 is annular and arranged around the groove 17. It can be understood that the formation of the third protrusion 14 improves the strength of the cover body 11, so that the cover body 11 has a certain structural strength, can withstand a certain impact force, improves the durability of the cover plate 1, and ensures the sealing effect of the battery 100.

[0055] In some embodiments of the present utility model, as Figures 5-7 shown, the first protrusion 12 and the groove 17 are oppositely arranged in the thickness direction of the cover body 11; thus, the structural strength of the cover plate 1 at the groove 17 is ensured, it can withstand a certain impact force, thereby further improving the durability of the cover plate 1 and ensuring the sealing effect of the battery 100.

[0056] In some embodiments of the present utility model, as Figures 5-7As shown, the second protrusion 13 and the second annular groove 16 are oppositely arranged in the thickness direction of the cover body 11; thus, the structural strength of the cover plate 1 at the second annular groove 16 is ensured, and it can withstand a certain impact force, thereby further improving the durability of the cover plate 1 and ensuring the sealing effect of the battery 100.

[0057] In some embodiments of the present invention, as Figures 5-7 shown, the third protrusion 14 and the first annular groove 15 are oppositely arranged in the thickness direction of the cover body 11; thus, the structural strength of the cover plate 1 at the first annular groove 15 is ensured, and it can withstand a certain impact force, thereby further improving the durability of the cover plate 1 and ensuring the sealing effect of the battery 100.

[0058] In some embodiments of the present invention, as Figures 5-7 shown, the first annular groove 15 and the second annular groove 16 are arranged in a staggered manner in the thickness direction of the cover body 11; thus, it is avoided that the structural strength of the cover plate 1 at the first annular groove 15 and the second annular groove 16 is too small, thereby further ensuring the structural strength of the cover plate 1 at the first annular groove 15 and the second annular groove 16, and it can withstand a certain impact force, thereby further improving the durability of the cover plate 1 and ensuring the sealing effect of the battery 100.

[0059] In some embodiments of the present invention, as Figures 5-7 shown, the first annular groove 15 and the groove 17 are arranged in a staggered manner in the thickness direction of the cover body 11. Thus, it is avoided that the structural strength of the cover plate 1 at the first annular groove 15 and the groove 17 is too small, thereby further ensuring the structural strength of the cover plate 1 at the first annular groove 15 and the groove 17, and it can withstand a certain impact force, thereby further improving the durability of the cover plate 1 and ensuring the sealing effect of the battery 100.

[0060] In some embodiments of the present invention, as Figure 2 and Figure 4 shown, the cover body 11 includes a connecting portion 111 and a guiding portion 112. The guiding portion 112 is arranged on the side of the connecting portion 111 facing the electrode group 30, and the connecting portion 111 is connected to the housing body 2. It should be noted that the peripheral wall of the connecting portion 111 is connected to the inner peripheral wall of the housing body 2, such as by welding or bonding, etc., thereby improving the connection reliability between the cover plate 1 and the housing body 2, and at the same time, also improving the sealing effect between the cover plate 1 and the housing body 2.

[0061] Further, as Figure 2 and Figure 4As shown, along the direction from the connection portion 111 to the guide portion 112, the peripheral wall of the guide portion 112 is inclined in the direction away from the inner peripheral wall of the shell body 2. It can be understood that the size of the cross section of the connection portion 111 (the cross section perpendicular to the first direction) should be the same as the size of the opening, so as to ensure the sealing effect between the cover plate 1 and the shell body 2. And by inclining the peripheral wall of the guide portion 112 in the direction from the connection portion 111 to the guide portion 112 in the direction away from the inner peripheral wall of the shell body 2, the size of the cross section of the guide portion 112 (the cross section perpendicular to the first direction) is smaller than the cross section of the connection portion 111, that is, the cross section of the guide portion 112 is smaller than the size of the opening, so that the guide portion 112 is convenient to extend into the installation space 21, so as to facilitate the installation between the cover body 11 and the shell body 2.

[0062] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the shell body 2 has a mounting hole on one end facing away from the cover plate 1 , and the output component 20 is inserted into the mounting hole and includes: a connecting piece 201 , a first connecting block 205 , a second connecting block 206 , a sealing ring 204 , an upper insulating member 202 and a lower insulating member 203 .

[0063] Furthermore, if Figure 2 and Figure 3 As shown, the connecting piece 201 is inserted into the mounting hole and connected to the pole ear of the pole group 30, the first connecting block 205 is sleeved on the connecting piece 201 and inserted into the mounting hole; the second connecting block 206 is provided at one end of the connecting piece 201 away from the cover plate 1 and is connected to both the connecting piece 201 and the first connecting block 205. It can be understood that one end of the connecting piece 201 is connected to the pole ear of the pole group 30, the other end of the connecting piece 201 is connected to the second connecting block 206, the first connecting block 205 and the second connecting block 206 are connected, and the first connecting block 205 and the second connecting block 206 are both connected to the electrical equipment, so as to realize power supply to the electrical equipment.

[0064] It should be noted that the inner peripheral wall of the first connection block 205 is connected to the peripheral wall of the second connection block 206, and the first connection block 205 may be a riveted block, and the first connection block 205 is riveted to the shell body 2, thereby realizing a fixed connection between the output component 20 and the shell body 2. The second connection block 206 may be a welding block, thereby realizing welding of the second connection block 206 with the connecting piece 201 and the second connection block 206, thereby realizing the conduction of the circuit and supplying power to the electrical equipment.

[0065] Furthermore, if Figure 2 and Figure 3As shown, along the thickness direction of the cover plate 1, the lower insulating member 203 is disposed on the side of the upper insulating member 202 facing the cover plate 1, and at least a part of the lower insulating member 203 and at least a part of the upper insulating member 202 are disposed between the first connecting block 205 and the housing body 2. Thus, conduction between the first connecting block 205 and the housing body 2 can be avoided, thereby avoiding electric leakage and improving the safety of the battery 100.

[0066] Further, as Figure 2 and Figure 3 shown, the sealing ring 204 is inserted through the mounting hole, and the sealing ring 204 is disposed between the first connecting block 205, the upper insulating member 202, the lower insulating member 203, and the housing body 2. Thus, the electrolyte can be prevented from flowing out through the gaps between the first connecting block 205 and the upper insulating member 202, between the first connecting block 205 and the lower insulating member 203, and between the housing body 2 and the first connecting block 205, thereby improving the sealing performance of the battery housing 10 and further improving the safety of the battery 100.

[0067] Further, the lower insulating member 203, the sealing ring 204, and the upper insulating member 202 can be connected to the housing body 2 by interference fit, thereby realizing the connection and fixation between the housing body 2 and the output assembly 20.

[0068] Next, reference is made to Figure 1 and Figure 2 to describe the battery 100 according to the present invention.

[0069] As Figure 1 and Figure 2 shown, the battery 100 according to an embodiment of the present invention includes the above-mentioned battery housing 10.

[0070] Specifically, referring to Figure 1 and Figure 2 , the battery housing 10 has an installation space 21 therein. The battery 100 further includes a pole group 30 and an output assembly 20. The pole group 30 is disposed in the installation space 21, and the output assembly 20 is disposed at one end of the housing body 2 facing away from the open end and is connected to the housing body 2. One end of the output assembly 20 facing the pole group 30 is connected to the pole group 30, thereby realizing the output of electric energy.

[0071] According to the battery 100 of the embodiment of the utility model, by setting the above-mentioned battery shell 10, the output component 20 is arranged at the end of the shell body 2 away from the open mouth and connected to the shell body 2, and the cover plate 1 is arranged at the open mouth to block the open mouth, so that the shell body 2 plays a supporting and fixing role for the output component 20, so that the cover plate 1 can reduce the supporting and fixing role of the output component 20, so that when designing the cover plate 1, the requirements for the structural strength of the cover plate 1 can be reduced, thereby reducing the thickness of the cover plate 1, thereby reducing the cost of the cover plate 1, which is beneficial to the economy of the battery shell 10.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery housing, characterized in that: For a battery, the battery includes an output assembly, and the battery housing includes: A shell body, wherein one end of the shell body along the first direction is open to form an open opening, the shell body has an installation space for installing a pole group, and the output assembly is arranged at one end of the shell body away from the open opening and connected to the shell body; A cover plate, the cover plate is arranged at the open opening and is used to block the open opening, a mounting hole is provided on the end of the shell body facing away from the cover plate, the output assembly is passed through the mounting hole and includes: a connecting piece, a first connecting block, a second connecting block, a sealing ring, an upper insulating member and a lower insulating member, the connecting piece is passed through the mounting hole and is connected to the pole ear of the pole group; the first connecting block is sleeved on the connecting piece and passed through the mounting hole; the second connecting block is arranged at an end of the connecting piece away from the cover plate and is connected to both the connecting piece and the first connecting block; along the thickness direction of the cover plate, the lower insulating member is arranged on a side of the upper insulating member facing the cover plate, and at least part of the lower insulating member and at least part of the upper insulating member are arranged between the first connecting block and the shell body; the sealing ring is passed through the mounting hole, and the sealing ring is arranged between the first connecting block and the upper insulating member, the lower insulating member and the shell body.

2. The battery housing according to claim 1, characterized in that: The cover plate comprises: A cover body and a first protrusion, wherein the cover body is connected to the shell body, and the first protrusion is arranged on a side of the cover body facing the pole group.

3. The battery housing according to claim 2, characterized in that: The cover plate also includes: The second protrusion is arranged on a side of the cover body facing the pole group, the second protrusion is annular and arranged around the first protrusion, and the first protrusion and the second protrusion are spaced apart to form a first annular groove.

4. The battery case according to claim 3, characterized in that: A side of the cover body facing away from the pole group has a groove.

5. The battery casing according to claim 4, characterized in that: The cover body further has a second annular groove on one side away from the pole group, and the second annular groove is arranged around the groove.

6. The battery casing according to claim 5, characterized in that: The second annular groove is spaced apart from the groove, and the cover body between the second annular groove and the groove is formed as a third protrusion, which is annular and arranged around the groove.

7. The battery casing according to claim 6, characterized in that: The first protrusion and the groove are arranged opposite to each other in the thickness direction of the cover body; and / or, the second protrusion and the second annular groove are arranged opposite to each other in the thickness direction of the cover body; And / or, the third protrusion and the first annular groove are arranged opposite to each other in the thickness direction of the cover body; And / or, the first annular groove and the second annular groove are staggered in the thickness direction of the cover body; And / or, the first annular groove and the groove are staggered in the thickness direction of the cover body.

8. The battery casing according to claim 2, characterized in that: The cover body includes a connecting portion and a guiding portion, wherein the guiding portion is arranged on a side of the connecting portion facing the pole group, the connecting portion is connected to the shell body, and along the direction from the connecting portion to the guiding portion, the peripheral wall of the guiding portion is inclined toward a direction away from the inner peripheral wall of the shell body.

9. A battery, characterized in that: The invention comprises a battery casing according to any one of claims 1 to 8.

Images