Pole assembly, shell and battery

Abstract

The pole assembly comprises a pole body and a connecting piece, the pole body comprises an outer pole and an inner pole, the inner pole is arranged on one side of the outer pole, the connecting piece is fixedly arranged on the side, away from the inner pole, of the outer pole, and the connecting piece is fixedly connected with the outer pole. And the conductive terminals are conductively connected with the outer post terminals. As the connecting piece is arranged on the pole body and is used for bearing pressure, the pole body is prevented from being deformed due to the influence of external force, the stable connection between the battery and an external circuit can be ensured, and the service efficiency and the service life of the battery are improved.

Description

Technical Field

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

[0002] Steel case button batteries have excellent sealing performance and can provide reliable power supply in different environments, so they are widely used in various microelectronic devices. However, with the development trend of electronic devices towards smaller size and higher performance, higher requirements are placed on the structural stability and electrical performance of steel case button batteries.

[0003] In the traditional steel shell button battery design, the pole is usually set at the top of the battery shell. Aluminum has become a common material for manufacturing poles because of its good conductivity and relatively low cost. However, during production, transportation and later use, aluminum poles are easily affected by external forces and deformed. This deformation may cause unstable connection between the battery and the external circuit, affecting the battery's efficiency and life. Utility Model Content

[0004] The embodiments of the utility model provide a pole assembly, a housing and a battery to solve the problem that the aluminum pole is easily deformed by external forces, thereby improving the use efficiency and life of the battery.

[0005] Specifically, the utility model provides a pole assembly, including a pole body and a connecting plate, the pole body including an outer pole and an inner pole, the inner pole is arranged on one side of the outer pole, the connecting plate is fixedly arranged on the side of the outer pole away from the inner pole, and is conductively connected to the outer pole.

[0006] Optionally, an explosion-proof valve is provided on the outer pole, and the explosion-proof valve is located on the outer surface or the inner surface of the outer pole.

[0007] Optionally, the explosion-proof valve is located at the connection position between the outer pole and the inner pole.

[0008] Optionally, the connecting piece is connected to the pole body by welding, and a projection of a welding position in the direction of the pole body is located on the inner pole, and the explosion-proof valve is located at the periphery of the welding position.

[0009] Optionally, the connecting piece includes a connecting portion, the connecting portion is connected to the outer pole, and an extending direction of the connecting portion is the same as an extending direction of the outer pole.

[0010] Optionally, the connecting piece further includes a protrusion, the protrusion is connected to the connecting portion, the protrusion covers the inner pole; and the protrusion is recessed in a direction away from the inner pole.

[0011] Optionally, the connecting piece is a nickel plate or a stainless steel plate;

[0012] When the connecting piece is a stainless steel plate, a nickel layer is plated on the side of the stainless steel plate facing away from the outer pole.

[0013] Optionally, the pole assembly further includes a reinforcing layer, and the reinforcing layer is arranged on the side of the pole body facing away from the connecting piece.

[0014] The present utility model also provides a housing, which is characterized in that it includes a housing body and the pole assembly as described in any one of the above; the housing body includes a cylindrical body with one end open and a top cover sealed at the opening; a through hole is provided on the top cover, the pole body is sealed at the through hole, the inner pole is located in the through hole, and the outer pole is located outside the housing body.

[0015] Optionally, an insulating layer is provided between the outer pole and the housing body.

[0016] Optionally, a reinforcing portion is provided at the bottom of the housing body, and the reinforcing portion is recessed in a direction away from the opening.

[0017] The present utility model also provides a battery, which includes a battery cell and the housing as described in any one of the above, and the battery cell is arranged inside the housing.

[0018] The present utility model also provides a battery, which includes a battery cell and the housing assembly as described in any one of the above, and the battery cell is arranged in the accommodation cavity.

[0019] The beneficial effects of the present utility model are as follows:

[0020] In the pole assembly, housing and battery provided by the present utility model, since a connecting piece is provided on the pole body, the pressure is borne by the connecting piece, avoiding deformation of the pole body due to external forces, so that a stable connection between the battery and the external circuit can be ensured, and the service efficiency and life of the battery can be improved. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments of the present utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of a pole body in an embodiment of the present utility model;

[0023] Figure 2It is a schematic structural diagram of the connecting piece in the pole column body in an embodiment of the present utility model;

[0024] Figure 3 It is a schematic structural diagram of the outer shell in an embodiment of the present utility model.

[0025] In the figure: 100, pole column body; 110, outer pole column; 120, inner pole column; 130, explosion-proof valve; 200, connecting piece; 210, connecting part; 220, protruding part; 300, housing; 310, cylinder body; 320, top cover; 311, strengthening part; 400, insulating layer; 500, reinforcing layer. Detailed implementation manners

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Figure 1 It is a schematic structural diagram of the pole column body in an embodiment of the present utility model, as Figure 1 shown, and referring to Figure 2 、 Figure 3, an embodiment of the present utility model provides a pole assembly, which includes a pole body 100 and a connecting piece 200. The pole body 100 includes an outer pole 110 and an inner pole 120. The inner pole 120 is disposed on one side of the outer pole 110. The connecting piece 200 is fixedly disposed on the side of the outer pole 110 facing away from the inner pole 120 and is electrically connected to the outer pole 110. The connecting piece 200 is used for electrical connection with an external circuit.

[0030] In the embodiment of the present utility model, since the connecting piece 200 is provided on the pole body 100, the connecting piece 200 bears the pressure, avoiding the pole body 100 from deforming due to the influence of external forces. Therefore, it can ensure the stable connection between the battery and the external circuit, improving the service efficiency and life of the battery.

[0031] In an embodiment of the present utility model, an explosion-proof valve 130 is provided on the outer pole 110. The explosion-proof valve 130 is located on the outer surface or the inner surface of the outer pole 110. The setting of the explosion-proof valve 130 can control the internal pressure of the battery, releasing the overpressure or abnormal pressure in time to reduce the risk of explosion or fire. When the explosion-proof valve 130 is located on the outer surface of the outer pole 110, the shape of the explosion-proof valve 130 can be directly observed from the outside of the battery, so as to quickly locate the installation position and direction of the connecting piece 200.

[0032] Furthermore, the explosion-proof valve 130 is located at the connection position between the outer pole 110 and the inner pole 120. Since the connection position between the outer pole 110 and the inner pole 120 is the area where the pole body 100 changes from thick to thin, the mechanical strength at this place decreases, which is the weak point of the whole structure. The explosion-proof valve 130 is provided in this area so that when the battery is short-circuited, the increased air pressure inside acts on the pole body 100, causing the pole body 100 to burst along the path formed by the explosion-proof valve 130 for exhaust. Specifically, the explosion-proof valve is formed by stamping, laser engraving or knife engraving.

[0033] In an embodiment of the present utility model, the connecting piece 200 is welded to the pole body 100, and the projection of the welding position in the direction of the pole body 100 is located on the inner pole 120. The explosion-proof valve 130 is located on the outer periphery of the welding position. Such a setting makes the connecting piece 200 and the pole body 100 welded only in a specific area, and the explosion-proof valve 130 is not affected by the welding, avoiding interference.

[0034] In an embodiment of the present utility model, the connecting piece 200 includes a connecting portion 210. The connecting portion 210 is connected to the outer pole 110, and the extending direction of the connecting portion 210 is the same as the extending direction of the outer pole 110.

[0035] Further, the connecting piece 200 further includes a protruding portion 220, the protruding portion 220 is connected to the connecting portion 210, and the protruding portion 220 covers the inner pole 120; the protruding portion 220 is recessed in a direction away from the inner pole 120. Since the protruding portion 220 covers the inner pole 120, the connecting portion 210 of the connecting piece 200 extends onto the outer pole 110, thereby receiving pressure and preventing the explosion-proof valve 130 on the pole body 100 from bursting due to external force.

[0036] As Figure 2 shown, in an embodiment of the present invention, the explosion-proof valve 130 has an annular structure, and the length of the connecting piece 200 in a preset direction is less than the diameter of the explosion-proof valve 130, so that part of the explosion-proof valve 130 is not covered by the connecting piece 200, avoiding interference with the explosion of the explosion-proof valve 130. The preset direction is parallel to the side surface of the pole body 100 connected to the connecting piece 200. Specifically, the length of the connecting portion 210 in the preset direction is less than the diameter of the explosion-proof valve 130.

[0037] In an embodiment of the present invention, the connecting piece 200 is a nickel plate or a stainless steel plate. When the connecting piece 200 is a stainless steel plate, a nickel layer is plated on the side of the stainless steel plate facing away from the outer pole 110. Since the surface of the aluminum pole is easily oxidized to form an insulating layer 400, resulting in poor battery contact. In this embodiment, the connecting piece 200 is a nickel plate or a stainless steel plate, which can play a conductive role and will not form an insulating layer 400, avoiding poor battery contact.

[0038] As Figure 1 shown, in an embodiment of the present invention, the pole assembly further includes a reinforcing layer 500, the reinforcing layer 500 is disposed on the side of the pole body 100 facing away from the connecting piece 200, further improving the mechanical strength of the pole assembly, avoiding deformation of the pole body 100 due to external force, and thus ensuring stable connection between the battery and the external circuit, improving the use efficiency and life of the battery. Specifically, the reinforcing layer 500 is made of insulating materials such as glass fiber and plastic; the reinforcing layer 500 is located inside the housing 300 and is bonded to the top cover 320 of the housing 300.

[0039] As Figure 3 shown, an embodiment of the present invention further provides a housing, including a housing 300 and the pole assembly in any one of the above embodiments, so as to have all the effects of the pole assembly. The housing 300 includes a cylindrical body 310 with one end open and a top cover 320 covering the opening; a through hole is provided on the top cover 320, the pole body 100 covers the through hole, and the inner pole 120 is located inside the through hole.

[0040] In an embodiment of the present utility model, an insulating layer 400 is provided between the outer pole column 110 and the housing 300. Since the insulating layer 400 is disposed between the housing 300 and the pole column body 100, it forms a polar insulation and sealing effect on the battery. The insulating layer 400 is preferably made of PP, PEEK, PI composite glue or other plastic materials for hot pressing and gluing the insulating layer 400.

[0041] In an embodiment of the present utility model, a strengthening portion 311 is provided at the bottom of the cylinder body 310, and the strengthening portion 311 is recessed in a direction away from the opening. Thereby, the mechanical strength of the bottom of the cylinder body 310 is increased, the deformation of the bottom area of the cylinder body 310 under force is reduced, and at the same time, a bending space can be provided for the internal tab, which is safer.

[0042] An embodiment of the present utility model further provides a battery, which includes a battery cell and the outer shell in any one of the above embodiments to have all the effects of the outer shell. The battery cell is disposed inside the outer shell.

[0043] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be included in the protection scope of the present utility model.

Claims

1. A pole assembly, characterized in that: It comprises a pole body and a connecting piece, wherein the pole body comprises an outer pole and an inner pole, the inner pole is arranged on one side of the outer pole, and the connecting piece is fixedly arranged on a side of the outer pole away from the inner pole and is conductively connected to the outer pole.

2. The pole assembly according to claim 1, characterized in that: The outer pole is provided with an explosion-proof valve, and the explosion-proof valve is located on the outer surface or the inner surface of the outer pole.

3. The pole assembly according to claim 2, characterized in that: The explosion-proof valve is located at the connection position between the outer pole and the inner pole.

4. The pole assembly according to claim 2, characterized in that: The connecting piece is welded to the pole body, and the projection of the welding position in the direction of the pole body is located on the inner pole, and the explosion-proof valve is located at the periphery of the welding position; The connecting piece includes a connecting portion, the connecting portion is connected to the outer pole, and the extending direction of the connecting portion is the same as the extending direction of the outer pole.

5. The pole assembly according to claim 4, characterized in that: The connecting piece further comprises a protrusion, the protrusion is connected to the connecting portion, the protrusion covers the inner pole; the protrusion is recessed in a direction away from the inner pole.

6. The pole assembly according to claim 1, characterized in that: The connecting piece is a nickel plate or a stainless steel plate; the side of the stainless steel plate facing away from the outer pole is plated with a nickel layer.

7. The pole assembly according to claim 1, characterized in that: The pole assembly further includes a reinforcement layer, which is arranged on a side of the pole body away from the connecting piece.

8. A housing, characterized in that: It comprises a shell and a pole assembly as claimed in any one of claims 1 to 7; the shell comprises a cylinder with an opening at one end and a top cover covering the opening; a through hole is provided on the top cover, the pole body is covered at the through hole, and the inner pole is located in the through hole; the outer pole is located outside the shell, and an insulating layer is provided between the outer pole and the top cover.

9. The housing according to claim 8, characterized in that A reinforcement portion is disposed at the bottom of the housing, and the reinforcement portion is recessed in a direction away from the opening.

10. A battery, characterized in that: The invention comprises a battery core and a casing as claimed in claim 8 or 9, wherein the battery core is arranged in the casing.

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