Concentric correction tool for pole and shell of cylindrical battery

Abstract

The utility model discloses a cylindrical battery pole and shell concentric correcting tool, a pole is fastened with a shell through a nut, one end of a correcting tool body is open, the other end of the correcting tool body is provided with a nut containing through hole, and the nut containing through hole is communicated with a battery shell containing groove and is coaxial with the battery shell containing groove. The tool body is formed by splicing a left tool single body and a right tool single body through a force adjustable rod, the force adjustable rod comprises a limiting head and a connecting rod, one end of the connecting rod is connected with the limiting head, the other end of the connecting rod penetrates through the left tool single body to be connected with the right tool single body, and the connecting rod is further sleeved with a limiting spring. The limiting spring is arranged between the limiting head and the left tool single body, the left tool single body is further provided with a limiting through hole, a supporting rod is arranged in the limiting through hole in a sliding mode, one end of the supporting rod makes contact with the right tool single body, and the other end of the supporting rod extends to the outer side of the left supporting single body. The tool has the beneficial effects that the structure is simple, the operation is convenient, and the concentricity of the pole and the battery shell is corrected through the tool monomer, so that the subsequent welding requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to cylindrical battery technical field, concretely relates to a cylindrical battery pole and shell concentricity correction frock. BACKGROUND

[0002] Cylindrical battery has good rate, low cost, high safety, long cycle life and other advantages are more and more recognized by the market, and with the high speed development of science and technology, the degree of automation of production equipment is also higher and higher in the production process of cylindrical battery. The battery needs to be welded for many times in the assembly process, especially the cylindrical battery adopting nut to fasten the pole and the shell, after the pole and the nut are locked, the pole and the nut still need to be welded by laser welding process, so as to keep the pole in continuous sealing state and guarantee the safety of the battery. At present, the semi-automatic welding process is mostly used between the pole and the nut, that is, the center axis of the cylindrical battery shell is used as the center to limit the welding track of the welding head, when the cylindrical battery moves to the specified position, the welding head carries out welding according to the established welding track. But in order to facilitate the assembly of the cylindrical battery, the inner diameter of the pole hole of the battery shell is often larger than the diameter of the pole, which makes the pole enter the inner diameter of the pole hole of the battery shell with large overhang, after the nut is fastened to the pole, there is the problem of eccentricity and large eccentric size, the pole and the battery shell cannot reach the concentric state, and the eccentric direction and size are irregular, which leads to that the established welding track and the pole cannot maintain the concentric state, resulting in poor welding quality and low yield. SUMMARY

[0003] The utility model discloses a cylindrical battery pole and shell concentricity correction frock, simple structure, convenient operation, the concentricity of the pole and the battery shell is corrected through the frock monomer, to satisfy the welding requirement of follow -up.

[0004] The utility model discloses a cylindrical battery pole and shell concentricity correction frock, the pole of cylindrical battery is through the nut that sets up in the outside of shell and is fastened with shell, the correction frock includes frock body, the one end opening of frock body, the other end of frock body is set up with nut containing through -hole, nut containing through -hole with the battery shell containing groove that sets up in the frock body is communicated and coaxial line, the frock body is connected by the adjustable lever of force of left frock monomer and right frock monomer and is formed, the adjustable lever of force includes limit head and connecting rod, the one end of connecting rod is connected with limit head, the other end of connecting rod is connected through left frock monomer and right frock monomer, the limit spring is still equipped on connecting rod, the limit spring is equipped between limit head and left frock monomer, left frock monomer is equipped with limit through -hole still, the support rod sliding is equipped in limit through -hole, the one end of support rod is contacted with right frock monomer, the other end of support rod extends to the outside of left support monomer.

[0005] In some embodiments, the left tooling unit has an embedding hole, and the limiting spring is located inside the embedding hole.

[0006] In some embodiments, the connecting rod is threadedly connected to the right tooling unit.

[0007] In some embodiments, the inner diameter of the limiting through hole matches the diameter of the support rod, the support rod comprising a first rod and a second rod linearly connected, the diameter of the first rod being smaller than the diameter of the second rod, and the second rod contacting the right tooling unit.

[0008] In some embodiments, at least two force-adjustable levers are provided on both sides of the battery housing receiving slot.

[0009] In some embodiments, at least one support rod is provided on each side of the battery housing receiving groove.

[0010] In some embodiments, a gasket receiving groove is also provided at the connection between the nut receiving through hole and the battery housing receiving groove.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model reduces the eccentricity between the terminal post and the housing by correcting their concentricity, achieving an eccentricity offset of ≤0.2mm. Concentricity correction before welding the nut to the terminal post facilitates subsequent welding along a predetermined track, improving welding quality. By setting coaxial nut-accommodating through-holes and battery housing-accommodating grooves within the tooling unit, the concentricity of the cylindrical battery terminal post and housing is corrected, facilitating subsequent welding of the terminal post and nut. The tooling unit of this utility model is designed as a left-right assembly, with an adjustable force rod enabling the splicing and separation of the left and right tooling units. This facilitates the placement of the cylindrical battery and allows for easy adjustment of the shape matching between the nut and the nut-accommodating through-hole. This utility model also includes a support rod, which pushes the right tooling unit away from the left tooling unit, making operation convenient.

[0012] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Fig. 1 This is an assembly diagram of the present invention and a cylindrical battery.

[0014] Fig. 2 This is a cross-sectional view of the present invention.

[0015] Fig. 3 This is a schematic diagram of the adjustable lever.

[0016] Fig. 4 This is a structural diagram of the support rod.

[0017] Fig. 5This is a schematic diagram of a cylindrical battery.

[0018] Among them, 1. Left tooling unit, 2. Right tooling unit, 3. Limiting head, 4. First rod, 5. Nut, 6. Housing, 7. Connecting rod, 8. Limiting spring, 9. Second rod, 10. Insulating gasket. Detailed Implementation

[0019] like Figs. 1 to 5 As shown, a concentric alignment fixture for a cylindrical battery terminal and its housing is disclosed. The terminal of the cylindrical battery penetrates the housing 6 and is fastened to the housing 6 by a nut 5 located on the outside of the housing 6. Specifically, the nut 5 and the housing 6 are insulated by an insulating gasket 10. The alignment fixture includes a fixture body with an open end and a nut receiving through hole at the other end. The shape of the nut receiving through hole matches the shape of the nut 5 and is used to limit the nut 5. The nut receiving through hole communicates with and is coaxial with a battery housing receiving groove located within the fixture body. The open end of the fixture body communicates with the battery housing receiving groove. Specifically, the inner diameter of the battery housing receiving groove matches the diameter of the battery housing 6. Preferably, the inner diameter of the battery housing receiving groove is equal to or slightly larger than the diameter of the battery housing 6. The tooling body is assembled from a left tooling unit 1 and a right tooling unit 2 via a force-adjustable rod. Preferably, the left tooling unit 1 and the right tooling unit 2 are symmetrically assembled. The force-adjustable rod includes a limiting head 3 and a connecting rod 7. One end of the connecting rod 7 is connected to the limiting head 3, and the other end of the connecting rod 7 passes through the left tooling unit 1 and the right tooling unit 2. A limiting spring 8 is also fitted on the connecting rod 7. The limiting spring 8 is located between the limiting head 3 and the left tooling unit 1. Specifically, the left tooling unit 1 is pressed tightly against the right tooling unit 2 by the elastic force of the limiting spring 8, thereby realizing the assembly of the tooling body. The left tooling unit 1 can also compress the limiting spring 8 along the connecting rod 7 in a direction away from the right tooling unit 2, thereby increasing the distance between the left tooling unit 1 and the right tooling unit 2, thus facilitating the insertion of the cylindrical battery into the battery housing receiving slot. The left tooling unit 1 is also provided with a limiting through hole, and a support rod is slidably disposed within the limiting through hole. One end of the support rod contacts the right tooling unit 2, and the other end of the support rod extends to the outside of the left tooling unit 1. Specifically, when concentric alignment of the electrode post and the housing 6 is required, the support rod extending to the outside of the left tooling unit 1 can be pressed down, or the support rod can be placed sideways on a table. The support rod pushes the right tooling unit 2 away from the left tooling unit 1, thereby separating the left tooling unit 1 from the right tooling unit 2. Then, the cylindrical battery is placed into the tooling body, with the nut 5 placed in the nut receiving through hole and the battery housing 6 placed in the battery housing receiving groove. The support rod is released, and the left tooling unit 1 and the right tooling unit 2 are pressed together by the elastic force of the limiting spring 8, thereby achieving concentric alignment of the electrode post and the housing 6 through the tooling units.

[0020] In some embodiments, the left tooling unit 1 is provided with an embedding hole, and the limiting spring 8 is located in the embedding hole. The embedding hole can protect the limiting spring 8 and also reduce the length of the connecting rod 7, thereby reducing costs.

[0021] In some embodiments, the connecting rod 7 is threadedly connected to the right tooling unit 2. The connecting rod 7 and the right tooling unit 2 are detachably connected for easy replacement and maintenance. In addition, the elastic force of the limiting spring 8 can be adjusted by screwing the connecting rod 7 into the right tooling unit 2, or by disassembling the connecting rod 7 and replacing it with a different limiting spring 8, thereby adjusting the elastic force and thus the correction force.

[0022] In some embodiments, the inner diameter of the limiting through hole matches the diameter of the support rod. The support rod includes a first rod 4 and a second rod 9 linearly connected. The diameter of the first rod 4 is smaller than the diameter of the second rod 9, and the second rod 9 contacts the right tooling unit 2. By having the second rod 9 with a larger diameter contact the right tooling unit 2, the contact area between the support rod and the right tooling unit 2 is increased, facilitating the push-out of the right tooling unit 2 by the support rod. In addition, the second rod 9 with a larger diameter also serves as a limiting element, preventing the support rod from coming out of the left tooling unit 1.

[0023] In some embodiments, at least two force-adjustable rods are provided on both sides of the battery housing receiving groove to prevent the left tooling unit 1 and the right tooling unit 2 from shifting and to improve the alignment of the left tooling unit 1 and the right tooling unit 2.

[0024] In some embodiments, at least one support rod is provided on each side of the battery housing receiving groove.

[0025] In some embodiments, a gasket receiving groove is also provided at the connection between the nut receiving through hole and the battery housing receiving groove. When the cylindrical battery is placed inside the tooling unit, the gasket receiving groove can be used to accommodate the insulating gasket 10 between the nut 5 and the housing 6.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0029] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A concentric alignment fixture for a cylindrical battery terminal and its casing, wherein the terminal of the cylindrical battery penetrates the casing and is fastened to the casing by a nut located on the outside of the casing, characterized in that: The corrective fixture includes a fixture body with an open end and a nut receiving through hole at the other end. The nut receiving through hole is connected to and coaxial with a battery housing receiving groove located inside the fixture body. The fixture body is assembled from a left fixture unit and a right fixture unit via a force-adjustable rod. The force-adjustable rod includes a limiting head and a connecting rod. One end of the connecting rod is connected to the limiting head, and the other end of the connecting rod passes through the left fixture unit and connects to the right fixture unit. A limiting spring is also fitted on the connecting rod and is located between the limiting head and the left fixture unit. The left fixture unit also has a limiting through hole, within which a support rod is slidably mounted. One end of the support rod contacts the right fixture unit, and the other end of the support rod extends to the outside of the left support unit.

2. The concentric alignment fixture for cylindrical battery terminals and housing according to claim 1, characterized in that: The left tooling unit has an embedding hole, and the limiting spring is located inside the embedding hole.

3. The concentric alignment fixture for cylindrical battery terminals and housing according to claim 1, characterized in that: The connecting rod is connected to the right tooling unit by a thread.

4. The concentric alignment fixture for cylindrical battery terminals and housing according to claim 1, characterized in that: The inner diameter of the limiting through hole matches the diameter of the support rod. The support rod includes a first rod and a second rod that are linearly connected. The diameter of the first rod is smaller than the diameter of the second rod. The second rod is in contact with the right tooling unit.

5. The concentric alignment fixture for cylindrical battery terminals and housing according to claim 1, characterized in that: At least two force-adjustable levers are provided on both sides of the battery housing receiving slot.

6. The concentric alignment fixture for cylindrical battery terminals and housing according to claim 1, characterized in that: At least one support rod is provided on each side of the battery housing receiving slot.

7. The concentric alignment fixture for cylindrical battery terminals and housing according to claim 1, characterized in that: A gasket receiving groove is also provided at the connection between the nut receiving through hole and the battery housing receiving groove.

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