Welding positioning device for lithium ion battery

Abstract

A welding positioning device of a lithium ion battery comprises a supporting plate and further comprises a sliding rail strip and four positioning blocks. The sliding rail strip is installed on one side of the supporting plate. The positioning block is installed on the sliding rail strip in a sliding mode, and a locking mechanism is arranged between the positioning block and the sliding rail strip. By adopting the welding positioning device provided by the utility model, when the welding positioning device is used, a flexible package lithium battery monomer is placed on the supporting plate, and one tab of the battery monomer falls into a gap formed by two positioning blocks by sliding the positioning blocks and adjusting the positions of the positioning blocks on the sliding rail strips; the other tab falls into a gap formed by the other two positioning blocks; and after the position of the positioning block is adjusted, the positioning block is locked on the sliding rail strip through the locking mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a welding positioning device for lithium ion batteries. Background Art

[0002] Combine Figure 1 The figure shows the structure of a soft-package lithium battery cell. When preparing a soft-package lithium battery cell, it is necessary to spot weld the tabs of the battery cell to ensure that the conductive sheet on the tab is firmly connected.

[0003] Combine Figure 2 The figure shows a schematic diagram of the structure of a traditional welding positioning device for positioning a soft-package lithium battery cell; a positioning bar is detachably installed on one side of the support plate, and two positioning grooves are provided on the positioning bar. When welding the soft-package lithium battery cell, the soft-package lithium battery cell is placed on the support plate, and the two tabs are stuck in the positioning grooves of the positioning bar to complete the positioning.

[0004] However, for soft-pack lithium battery cells of different specifications, the width A of the tabs varies, as does the spacing B between adjacent tabs. When welding soft-pack lithium battery cells of varying specifications, it is necessary to replace the corresponding positioning strips. Consequently, traditional welding positioning devices are cumbersome to use, and disassembling and installing the positioning strips is time-consuming and labor-intensive, significantly impacting the welding efficiency of soft-pack lithium battery cells of varying specifications. Utility Model Content

[0005] The main purpose of the utility model is to provide a welding positioning device for lithium-ion batteries, aiming to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the utility model proposes a welding positioning device for a lithium-ion battery, comprising a support plate, a slide bar and four positioning blocks; the slide bar is installed on one side of the support plate; the positioning block is slidably installed on the slide bar, and a locking mechanism is provided between the positioning block and the slide bar.

[0007] Preferably, scale lines are provided on the top surface of the slide rail.

[0008] Preferably, a U-shaped groove is provided on the positioning block; the positioning block is buckled on the slide rail through the U-shaped groove, and the slide rail is slidably matched with the U-shaped groove.

[0009] Preferably, the locking mechanism includes a locking screw and a locking block; a slide groove is provided on the slide rail; the locking block is slidably installed in the slide groove; a strip hole is provided on the side wall of the slide groove; a screw through hole is provided on the side wall of the U-shaped groove of the positioning block; the screw rod of the locking screw passes through the screw through hole and the strip hole in sequence and is screwed onto the locking block.

[0010] Preferably, a handle rod is inserted transversely into the cylindrical section of the locking screw.

[0011] Preferably, a rubber pad is adhered to the top surface of the support plate.

[0012] Preferably, the top surface of the rubber pad is flush with the top surface of the slide rail.

[0013] Preferably, a notch is provided on the support plate.

[0014] Preferably, the width C of the notch is 30-60 mm.

[0015] Preferably, the slide rail is spaced apart from one of the long sides of the support plate; and a connecting plate is provided between the end surface of the support plate and the end surface of the slide rail; the connecting plate is respectively connected to the support plate and the slide rail by screws.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the utility model are as follows:

[0017] (1) By adopting the welding positioning device provided by the present invention, when in use, the soft-package lithium battery cell is placed on the support plate, and the position of the positioning block on the slide bar is adjusted by sliding the positioning block so that one of the tabs of the battery cell falls into the gap formed by two of the positioning blocks, and the other tab falls into the gap formed by the other two positioning blocks; when the position of the positioning block is adjusted, the positioning block is locked on the slide bar by the locking mechanism.

[0018] (2) Compared with the traditional welding positioning device, there is no need to replace the positioning bar. When it is necessary to weld soft-pack lithium battery cells of different specifications, it is only necessary to adjust the position of the positioning block on the slide bar to position the soft-pack lithium battery cells.

[0019] (4) In the present invention, a scale line is provided on the top surface of the slide rail, thereby facilitating adjustment of the distance between the two positioning blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of a soft-package lithium battery cell;

[0022] Figure 2 A schematic diagram of the structure of a conventional welding positioning device for positioning a soft-package lithium battery cell;

[0023] Figure 3 This is a schematic structural diagram of the welding positioning device provided by the present invention;

[0024] Figure 4 for Figure 3 Middle AA section view;

[0025] Figure 5 This is a schematic diagram of the structure of the slide rail in the utility model;

[0026] Figure 6 This is a schematic structural diagram of the positioning block in the present utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the locking screw in the utility model;

[0028] Figure 8 This is a schematic diagram of the assembly structure formed by the positioning block, slide rail, and locking mechanism in the utility model;

[0029] Figure 9 The figure is a structural diagram of positioning a soft-package lithium battery cell using the welding positioning device provided by the present invention.

[0030] Explanation of the accompanying numbers: 1. Support plate; 2. Slide rail; 2a. Slide groove; 2b. Bar hole; 3. Positioning block; 3a. U-shaped groove; 3b. Screw hole; 4. Scale line; 5. Locking screw; 6. Locking block; 7. Handle rod; 8. Rubber pad; 9. Connecting plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] Combine Figures 3 to 8As shown, a welding positioning device for a lithium-ion battery includes a support plate 1, a slide bar 2 and four positioning blocks 3; the slide bar 2 is installed on one side of the support plate 1; the positioning block 3 is slidably installed on the slide bar 2, and a locking mechanism is provided between the positioning block 3 and the slide bar 2.

[0034] Furthermore, a scale line 4 is provided on the top surface of the slide rail 2 to facilitate debugging the distance between the two positioning blocks 3.

[0035] The positioning block 3 is provided with a U-shaped groove 3a; the positioning block 3 is buckled onto the slide rail 2 via the U-shaped groove 3a, and the slide rail 2 slides in engagement with the U-shaped groove 3a. Furthermore, the locking mechanism includes a locking screw 5 and a locking block 6; the slide rail 2 is provided with a slide groove 2a; the locking block 6 is slidably mounted within the slide groove 2a; a strip-shaped hole 2b is provided on the side wall of the slide groove 2a; and a screw through hole 3b is provided on the side wall of the U-shaped groove 3a of the positioning block 3; the screw of the locking screw 5 passes through the screw through hole 3b and the strip hole 2b in sequence before being screwed onto the locking block 6.

[0036] Once the positioning block 3 is adjusted, tighten the locking screw 5, pulling the locking block 6 against the sidewall of the chute 2a. Simultaneously, the cylindrical section of the locking screw 5 abuts against the side of the positioning block 3. This secures the positioning block 3. To facilitate rotation of the locking screw 5, a handle 7 is inserted transversely into the cylindrical section.

[0037] In order to protect the soft-package lithium battery cells, a rubber pad 8 is attached to the top surface of the support plate 1. Furthermore, the top surface of the rubber pad 8 is flush with the top surface of the rail bar 2 to avoid height differences that may cause bending of the tabs during welding.

[0038] The support plate 1 has a notch 1a. Specifically, after welding, a worker's fingers can fit into the notch 1a to facilitate access to the soft-package lithium battery cells. The diameter of an adult finger is approximately 20 mm. Therefore, to ensure that a finger can fit within the notch 1a, the width C of the notch 1a is required to be 30-60 mm.

[0039] Combine Figure 3 As shown, the slide rail 2 is spaced apart from one of the long sides of the support plate 1; and a connecting plate 9 is provided between the end surface of the support plate 1 and the end surface of the slide rail 2; the connecting plate 9 is respectively connected to the support plate 1 and the slide rail 2 by screws.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the concept of the present invention and the contents of the present invention description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding positioning device for a lithium-ion battery, comprising a support plate (1), characterized in that: It also includes a slide rail (2) and four positioning blocks (3); the slide rail (2) is installed on one side of the support plate (1); the positioning blocks (3) are slidably installed on the slide rail (2), and a locking mechanism is provided between the positioning blocks (3) and the slide rail (2).

2. A lithium-ion battery welding positioning device according to claim 1, characterized in that: A scale line (4) is provided on the top surface of the slide rail (2).

3. A lithium-ion battery welding positioning device as claimed in claim 1, characterized in that: A U-shaped groove (3a) is provided on the positioning block (3); the positioning block (3) is buckled onto the slide rail (2) via the U-shaped groove (3a), and the slide rail (2) and the U-shaped groove (3a) are slidably matched.

4. A lithium-ion battery welding positioning device as claimed in claim 3, characterized in that: The locking mechanism comprises a locking screw (5) and a locking block (6); a slide groove (2a) is provided on the slide rail (2); the locking block (6) is slidably installed in the slide groove (2a); a strip hole (2b) is provided on the side wall of the slide groove (2a); a screw through hole (3b) is provided on the side wall of the U-shaped groove (3a) of the positioning block (3); the screw rod of the locking screw (5) passes through the screw through hole (3b) and the strip hole (2b) in sequence and is then screwed onto the locking block (6).

5. A lithium-ion battery welding positioning device as claimed in claim 4, characterized in that: A handle bar (7) is inserted transversely into the cylindrical section of the locking screw (5).

6. The welding positioning device for a lithium-ion battery according to claim 1, wherein: A rubber pad (8) is adhered to the top surface of the support plate (1).

7. A lithium-ion battery welding positioning device as claimed in claim 6, characterized in that: The top surface of the rubber pad (8) is flush with the top surface of the slide rail (2).

8. The welding positioning device for a lithium-ion battery according to claim 1, wherein: A notch (1a) is provided on the support plate (1).

9. A lithium-ion battery welding positioning device as claimed in claim 8, characterized in that: The width C of the notch (1a) is 30-60 mm.

10. The welding positioning device for a lithium-ion battery according to claim 1, wherein: The slide rail (2) is spaced apart from one of the long sides of the support plate (1); a connecting plate (9) is provided between the end face of the support plate (1) and the end face of the slide rail (2); the connecting plate (9) is respectively connected to the support plate (1) and the slide rail (2) by screws.

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