Arc-shaped battery edge folding clamp

Abstract

The utility model discloses an edge folding clamp for an arc-shaped battery. The device is composed of an upper pressing block and a lower positioning block, a screw hole is formed in the bottom face of the lower positioning block, a pressing block return spring upper seat hole is formed above the screw hole, a screw through hole and a pressing block return spring lower seat hole are formed in the upper pressing block, and a concave semicircular arc face is arranged in the center of the lower positioning block. The concave semicircular cambered surface consists of a front concave cambered surface and a rear concave cambered surface which are arranged front and back; and the radius of the front concave cambered surface is equal to that of the outer cambered surface of the arc-shaped battery. According to the utility model, the arc-shaped battery can be clamped and positioned, especially a small-radius large-radian arc-shaped battery. According to the clamp disclosed by the utility model, the lower positioning block provided with the arc-shaped groove, the upper pressing block provided with the convex arc-shaped surface, the pressing block return spring, the guide bolt and the like are matched, so that clamping and positioning of the arc-shaped battery are realized.

Description

Technical Field

[0001] The utility model relates to the field of soft-pack lithium battery production equipment, and more specifically, to an arc-shaped battery folding clamp. Background Art

[0002] With the continuous innovation of electronic consumer products such as phone watches, bracelets, headphones, and smart rings, special-shaped batteries have been widely developed because they fit the battery compartments of these electronic consumer products better in shape, making the most of the space in the battery compartments and greatly improving the battery capacity of the products. Compared with the traditional square soft-pack lithium battery with a flat body and a flat sealed edge, which is folded parallel to the side of the battery in the battery front direction after cutting, the body and packaging edge of the arc-shaped battery are arc-shaped before folding, and generally because the body thickness is thin, it is considered that after cutting in the above manner, the battery packaging edge is prone to leakage, resulting in battery failure. Therefore, the arc-shaped battery often adopts a folding method in which the side is folded 180 degrees to the back of the battery after wide cutting to make the side fit the back of the battery. Although the back-fitting folding method solves the leakage problem, it also brings another problem, that is, the folding axis of the arc-shaped battery is not a straight line but an arc. When folding, the battery body is stressed and uneven, which can easily cause the battery to deform and be damaged, and further cause the battery cycle performance, electrical performance and safety performance to decline. Therefore, a folding fixture suitable for curved batteries is needed as a technical support so that the shape of the curved battery body is not affected by external forces during folding.

[0003] Currently, there is no known technology related to curved battery folding fixtures. The back folding of curved batteries is still done manually, that is, the battery body is pinched by hand. The reason is that the manufacturing process of special-shaped batteries is complicated and the manufacturing cost is high. There are no large-scale mass-produced curved battery products on the market, and the electronic products using them are only in the conceptual product or technology reserve stage. However, with the continuous changes in market demand and the improvement of manufacturing process level, this demand is likely to be released. By consulting relevant patents, literature, etc., no records of curved battery folding fixtures that have been used in mass production were found. Therefore, it is necessary to develop a folding fixture suitable for curved batteries. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an arc-shaped battery folding clamp.

[0005] The utility model discloses an arc-shaped battery folding clamp, which is realized by the following technical scheme, and is composed of an upper clamping block and a lower positioning block. The bottom surface of the lower positioning block 1 is provided with a screw hole 11, and a clamping block return spring upper seat hole 12 is arranged above the screw hole 11. A screw through hole 21 and a clamping block return spring lower seat hole 22 are arranged in the upper clamping block 2. A clamping block return spring 3 is placed between the clamping block return spring upper seat hole 12 and the clamping block return spring lower seat hole 22. A guide bolt 4 passes through the screw through hole 21 and the clamping block return spring 3 and is screwed into the screw hole 11. The clamping block return spring upper seat hole 12 and the clamping block return spring lower seat hole 22 are used to limit the movement of the clamping block return spring 3 in its radial direction.

[0006] The lower positioning block 1 is composed of a base, a left side wall, a right side wall and a rear side wall. The inner layers of the left side wall and the right side wall are vertically provided with guide grooves 13. The left side wall and the right side wall of the upper clamping block 2 are provided with corresponding guide blocks 23. The guide blocks 23 are located in the guide grooves 13, so that the upper clamping block 2 has only the freedom to move up and down along the guide grooves 13. The upper clamping block 2 is designed with a concave tapered hole 25. The outer section radius of the tapered hole is greater than the inner section radius. The lower half arc surface of the tapered hole is located outside the bottom surface of the upper clamping block. The tapered hole is used to avoid the arc edge of the battery folded over. The outer circumference of the lower half arc surface of the tapered hole is provided with an outer convex arc surface 24, and the tapered hole 25 is concentric with the outer convex arc surface 24.

[0007] An inner concave semicircular arc surface is set at the center of the lower positioning block 1. The inner concave semicircular arc surface is composed of a front concave arc surface 14 and a rear concave arc surface 15 set in front and back. The radius of the front concave arc surface is equal to the radius of the outer arc surface of the arc-shaped battery. The radius of the rear concave arc surface 15 is slightly smaller than the radius of the front concave arc surface 14. The rear concave arc surface is used to place the edge to be folded of the arc-shaped battery. The radius difference between the front concave arc surface 14 and the rear concave arc surface 15 is equal to the thickness of the arc-shaped battery. The step 16 formed by the radius difference is used to locate the side of the arc-shaped battery. There is a front concave arc surface 14 with a radius equal to the outer arc surface of the arc-shaped battery, which is used to place the arc-shaped battery.

[0008] The radius of the tapered hole 25 is smaller than the radius of the outer convex arc surface 24 by 0-0.5 mm.

[0009] The outer edge of the lower arc surface of the tapered hole and the outer edge of the outer convex arc surface 24 form a thin sheet edge line 26, and the edge line 26 coincides with the arc folding axis of the arc-shaped battery.

[0010] The radius difference between the front concave curved surface 14 and the rear concave curved surface 15 is equal to the thickness of the curved battery.

[0011] The radius of the front concave arc surface is equal to the radius of the outer arc surface of the arc-shaped battery.

[0012] The radius of the outer convex arc surface 24 of the upper pressing block is equal to the radius of the inner arc surface of the arc-shaped battery.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can realize the clamping and positioning of arc-shaped batteries, especially arc-shaped batteries with small radius and large curvature. The clamp described in this patent realizes the clamping and positioning of arc-shaped batteries through the cooperation of the lower positioning block designed with an arc-shaped groove, the upper clamping block designed with an outer convex arc-shaped surface, the clamping block return spring, the guide bolt, etc.

[0015] 2. The fixture of the utility model is designed with a folding edge avoidance groove, the edge of the avoidance groove coincides with the arc folding edge axis of the battery, thereby limiting the deformation of the battery body to the greatest extent.

[0016] 3. The inner concave arc surface of the positioning block and the outer convex arc surface of the pressing block of the clamp of the utility model can be changed according to the radius and curvature requirements of different types of batteries.

[0017] 4. The fixture of the utility model has a simple structure and is easy to manufacture. It can be designed to be handheld or integrated into automated equipment for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure decomposition of the utility model;

[0019] Figure 2 It is a schematic diagram of the structural combination of the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the lower positioning block of the utility model;

[0022] Figure 5 It is a schematic diagram of the upper pressing block mechanism of the utility model. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the utility model, and the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0024] Please refer to the attached Figure 1 , used for arc-shaped battery folding fixture, including a lower positioning block 1, an upper clamping block 2, a clamping block return spring 3 and a guide bolt 4, the lower positioning block 1, the upper clamping block 2, the clamping block return spring 3 and the guide bolt 4 are arranged according to the attached Figure 2 Use in conjunction with method.

[0025] The lower positioning block 1 and the upper pressing block 2 of the arc-shaped battery folding fixture provided by the utility model both have inner or outer arc-shaped surfaces. The only difference is that the radius of the arc-shaped surface is determined according to different battery arc radii and battery thicknesses. Figure 4 The structure of the lower positioning block 1 is shown, Figure 5 The purpose of this design is to make the convex and concave surfaces of the arc-shaped battery tightly fit with the lower positioning block 1 and the upper pressing block 2 of the clamp and be clamped.

[0026] In the attached Figure 3 In the embodiment, a screw hole 11 is provided on the bottom surface of the lower positioning block 1, and a clamping block return spring upper seat hole 12 is provided above the screw hole 11. A screw through hole 21 and a clamping block return spring lower seat hole 22 are provided in the upper clamping block 2. The clamping block return spring 3 is placed between the clamping block return spring upper seat hole 12 and the clamping block return spring lower seat hole 22. The guide bolt 4 passes through the screw through hole 21 and the clamping block return spring 3 and is screwed into the screw hole 11. The clamping block return spring upper seat hole 12 and the clamping block return spring lower seat hole 22 are used to limit the radial movement of the clamping block return spring 3.

[0027] In the attached Figure 3In the embodiment, the lower positioning block 1 is composed of a base, a left side wall, a right side wall and a rear side wall. The left side wall and the right side wall are vertically provided with a guide groove 13. The left side wall and the right side wall of the upper clamping block 2 are provided with corresponding guide blocks 23. The guide blocks 23 are located in the guide groove 13, so that the upper clamping block 2 has only the freedom to move up and down along the guide groove 13. Figure 5 In the embodiment, the upper clamping block 2 is designed with an inwardly concave tapered hole 25, the outer cross-sectional radius of the tapered hole is larger than the inner cross-sectional radius, the lower arc surface of the tapered hole is located outside the bottom surface of the upper clamping block, the tapered hole is used to avoid the curved edge of the battery that is folded over, the outer circumference of the lower arc surface of the tapered hole is provided with an outer convex arc surface 24, and the tapered hole 25 is concentric with the outer convex arc surface 24. The radius of the tapered hole is 0-0.5mm smaller than the radius of the outer convex arc surface.

[0028] In the attached Figure 4 In the embodiment, a concave semicircular arc surface is set at the center of the lower positioning block 1, and the concave semicircular arc surface is composed of a front concave arc surface 14 and a rear concave arc surface 15 arranged front and back, the front concave arc surface is equal to the radius of the outer arc surface of the arc-shaped battery, the radius of the rear concave arc surface 15 is slightly smaller than the radius of the front concave arc surface 14, and the rear concave arc surface is used to place the edge to be folded of the arc-shaped battery, the radius difference between the front concave arc surface 14 and the rear concave arc surface 15 is equal to the thickness of the arc-shaped battery, and the step 16 formed by the radius difference is used to locate the side of the arc-shaped battery. There is a front concave arc surface 14 with a radius equal to the outer arc surface of the arc-shaped battery, which is used to place the arc-shaped battery.

[0029] In the attached Figure 5 In the embodiment, the upper pressing block 2 is designed with an outer convex arc surface 24 having a radius equal to that of the inner arc surface of the arc-shaped battery, for pressing the arc-shaped battery.

[0030] The utility model discloses an arc-shaped battery folding clamp, which can clamp the entire arc surface of the arc-shaped battery, so that the battery body of the arc-shaped battery is not deformed and damaged by external forces when the arc-shaped battery is folded, thereby ensuring the cycle performance, electrical performance and safety performance of the arc-shaped battery, and providing a more convenient and efficient tool for improving the production of arc-shaped batteries.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A curved battery folding fixture, characterized in that: The utility model is composed of an upper clamping block and a lower positioning block, wherein the lower positioning block (1) is connected to the upper clamping block (2) by a guide bolt (4); the upper clamping block is provided with an inwardly concave tapered hole (25), the outer section radius of the tapered hole is larger than the inner section radius, the lower arc surface of the tapered hole is located outside the bottom surface of the upper clamping block, the tapered hole is used to avoid the curved edge of the battery that is folded over, the outer circumference of the lower arc surface of the tapered hole is provided with an outwardly convex arc surface (24), and the tapered hole is concentric with the outwardly convex arc surface; the center of the lower positioning block (1) is provided with an inwardly concave semicircular arc surface, and the inwardly concave semicircular arc surface is composed of a front concave arc surface (14) and a rear concave arc surface (15) provided front and rear.

2. The arc-shaped battery folding fixture according to claim 1 is characterized in that: The bottom surface of the lower positioning block (1) is provided with a screw hole (11), and a pressure block return spring upper seat hole (12) is arranged above the screw hole (11); a screw through hole (21) and a pressure block return spring lower seat hole (22) are arranged in the upper pressure block (2); the pressure block return spring (3) is placed between the pressure block return spring upper seat hole (12) and the pressure block return spring lower seat hole (22); the guide bolt (4) passes through the screw through hole (21) and the pressure block return spring (3) and is screwed into the screw hole (11); the pressure block return spring upper seat hole (12) and the pressure block return spring lower seat hole (22) are used to limit the radial movement of the pressure block return spring (3).

3. The arc-shaped battery folding fixture according to claim 1 is characterized in that: The lower positioning block (1) is composed of a base, a left side wall, a right side wall and a rear side wall. The inner layers of the left side wall and the right side wall are vertically provided with guide grooves (13). The left side wall and the right side wall of the upper clamping block (2) are provided with corresponding guide blocks (23). The guide blocks (23) are located in the guide grooves (13). The upper clamping block is provided with an inwardly concave tapered hole (25). The outer section radius of the tapered hole is larger than the inner section radius. The lower half arc surface of the tapered hole is located outside the bottom surface of the upper clamping block. The tapered hole is used to avoid the curved edge of the battery that is folded over. The outer peripheral surface of the lower half arc surface of the tapered hole is provided with an outwardly convex arc surface (24). The tapered hole is concentric with the outwardly convex arc surface.

4. The arc-shaped battery folding fixture according to claim 1 is characterized in that: The front concave curved surface (14) is used to place the curved battery, the radius of the rear concave curved surface is smaller than the radius of the front concave curved surface, the rear concave curved surface is used to place the edge of the curved battery to be folded, and the step (16) formed by the radius difference between the front concave curved surface and the rear concave curved surface is used to position the side of the curved battery.

5. The arc-shaped battery folding fixture according to claim 1, characterized in that: The radius of the tapered hole is 0-0.5 mm smaller than the radius of the outer convex arc surface.

6. The arc-shaped battery folding fixture according to claim 1, characterized in that: The outer edge of the lower half arc surface of the tapered hole and the outer edge of the outer convex arc surface form a thin sheet edge line (26), and the edge line (26) coincides with the arc folding axis of the arc-shaped battery.

7. The arc-shaped battery folding fixture according to claim 1 is characterized in that: The radius of the outer convex arc surface of the upper pressing block is equal to the radius of the inner arc surface of the arc-shaped battery.

8. The arc-shaped battery folding fixture according to claim 4 is characterized in that: The radius difference between the front concave curved surface and the rear concave curved surface is equal to the thickness of the curved battery.

9. The arc-shaped battery folding fixture according to claim 4, characterized in that: The radius of the front concave arc surface is equal to the radius of the outer arc surface of the arc-shaped battery.

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