Battery cover plate welding clamp capable of preventing pseudo soldering
By designing a welding fixture consisting of a fixture body, a positioning block, and a negative pressure channel, the problem of incomplete welding during the welding of explosion-proof valve plates for lithium battery covers was solved, achieving high consistency and robustness in welding and simplifying the operation process.
Patent Information
- Application Number
- CN202423174444.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing explosion-proof valve plates for lithium battery covers are prone to forming incomplete welds during laser welding, resulting in poor height consistency at the weld joint and affecting the weld's strength.
A welding fixture comprising a fixture body, a positioning block, and a negative pressure channel was designed. By setting a placement groove and a positioning block on the fixture body to support the battery cover, and using the negative pressure channel to hold the explosion-proof valve plate in place, the welding height consistency is ensured.
It improves the practicality of welding, prevents incomplete welding, ensures the welding height consistency between the battery cover and the explosion-proof valve plate, simplifies the operation process, and improves the strength of the welding.
Smart Images
Figure CN223699648U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a battery cover plate welding fixture of false welding prevention. BACKGROUND
[0002] Lithium battery is a kind of battery by lithium metal or lithium alloy as positive, negative electrode material, using non-aqueous electrolyte solution, due to the chemical properties of lithium metal is very active, make the processing, preservation, use of lithium metal, the environment requirement is very high, with the development of science and technology, now lithium battery has become mainstream. Lithium battery cover plate generally welds explosion-proof valve piece, when welding by laser, laser welding heat source energy density is concentrated, flexibility is high and reliability is good, it is very suitable for the processing of small size battery parts.
[0003] The existing lithium battery cover plate explosion-proof valve piece is fixed by a clamp when welding by laser, to prevent moving during welding, but the processing method using the clamp leads to poor height consistency of the battery cover plate and the explosion-proof valve piece at the welding position, the focal length of the laser is fixed, false welding is easily formed, which affects the firmness of welding, therefore, we provide a battery cover plate welding fixture of false welding prevention. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a battery cover plate welding fixture of false welding prevention to solve the problems in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a battery cover plate welding fixture of false welding prevention, comprising:
[0006] Clamp body, recess is set up in the middle part of the upper surface of the clamp body, and the edge of the upper surface of the clamp body is set apart from the recess to set the placing groove for placing the battery cover plate;
[0007] Positioning block is set in the inner side of the placing groove to extend into the inner side of the through hole of the battery cover plate to lift and support the explosion-proof valve piece;
[0008] Negative pressure channel is set in the inner side of the clamp body corresponding to the positioning block to suck and fix the explosion-proof valve piece during welding.
[0009] Preferably, the placing groove is circular.
[0010] Preferably, a through groove is set up in the middle part of the inner side of the placing groove, and the both ends of the through groove penetrate the clamp body.
[0011] Preferably, the recess is rectangular, and the placing groove is uniformly distributed along the long side of the recess.
[0012] Preferably, the negative pressure channel comprises a second communication cavity, a first communication cavity and an interface, the first communication cavity is arranged inside the clamp body, and the second communication cavity corresponding to the positioning block is arranged on the first communication cavity to suck the explosion-proof valve plate, and the interface is arranged on the front surface of the clamp body and communicates with the inside of the first communication cavity.
[0013] Preferably, the number of the second communication cavities is the same as that of the positioning blocks.
[0014] Preferably, the positioning block is annular.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model discloses a placing groove, positioning block and negative pressure channel are arranged, avoid through the clamp with valve piece and battery cover plate fixed, inconvenient operation, and the battery cover plate and explosion -proof valve piece welding place height consistency is poor, and the device can support explosion -proof valve piece well, to keep proper welding height, then the explosion -proof valve piece is quickly sucked and fixed, and the operation is simple, and it is favorable that the focal length of the laser is fixed and welded, prevents the false welding, and the practicality of the device is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the structural schematic diagram of the utility model;
[0018] Figure 2 It is the structural schematic diagram of the placing groove of the utility model.
[0019] In the drawing: 1, clamp body;101, groove;2, placing groove;3, positioning block;4, second communication cavity;5, first communication cavity;6, interface;7, through slot. DETAILED DESCRIPTION
[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0021] Please refer to Figure 1 , Figure 2 The utility model provides a kind of technical scheme: a battery cover plate welding clamp of false welding prevention, comprising:
[0022] Clamp body 1, recess 101 is set in the upper surface middle part of clamp body 1, placing groove 2 for placing battery cover plate is set to the edge of the upper surface of clamp body 1 and recess 101 staggered, it is convenient to place battery cover plate, limit the left and right movement of battery cover plate;
[0023] Positioning block 3 is arranged in the inside of the placing groove 2 to extend into the inside of the through hole of the battery cover plate to support the explosion-proof valve piece, which is convenient for adjusting the placing height of the explosion-proof valve piece, so that the explosion-proof valve piece is kept consistent with the position of the through hole of the battery cover plate, so as to make the welding position receive the same welding temperature after the fixed focal length of the laser, so as to prevent the occurrence of false welding.
[0024] Negative pressure channel is arranged in the inside of the clamp body 1 corresponding to the positioning block 3 to suck and fix the explosion-proof valve piece during welding, which is convenient for quickly fixing the explosion-proof valve piece.
[0025] In the embodiment, preferably, the placing groove 2 is circular, which is convenient for corresponding to the circular battery cover plate.
[0026] In the embodiment, preferably, a through groove 7 is arranged in the middle of the inside of the placing groove 2, and the two ends of the through groove 7 penetrate through the clamp body 1, which is convenient for grabbing the welded battery cover plate from the inside of the placing groove 2 for taking out.
[0027] In the embodiment, preferably, the recess 101 is rectangular, and the placing groove 2 is uniformly distributed with a plurality of long edges along the recess 101, which is convenient for placing a plurality of battery cover plates to be welded.
[0028] In the embodiment, preferably, the negative pressure channel comprises a second communication cavity 4, a first communication cavity 5 and an interface 6, the inside of the clamp body 1 is provided with the first communication cavity 5, the first communication cavity 5 is provided with the second communication cavity 4 corresponding to the positioning block 3 for sucking and fixing the explosion-proof valve piece, and the front surface of the clamp body 1 is provided with the interface 6 communicated with the inside of the first communication cavity 5, which is convenient for vacuumizing to generate negative pressure to tightly fix the explosion-proof valve piece.
[0029] In the embodiment, preferably, the number of the second communication cavities 4 is the same as the number of the positioning blocks 3.
[0030] In the embodiment, preferably, the positioning block 3 is annular.
[0031] The working principle and use process of the utility model are as follows: when in use, the battery cover plate is placed into the inside of the placing groove 2, at this time, the positioning block 3 extends into the through hole of the battery cover plate, the explosion-proof valve piece is placed on the positioning block 3 corresponding to the through hole, at this time, the edge of the explosion-proof valve piece is flush with the edge of the through hole, and keeps the same height, the interface 6 is connected with the vacuumizing machine, the inside of the plurality of second communication cavities 4 generates negative pressure through the first communication cavity 5, the valve piece can be tightly fixed, the valve piece is prevented from moving, and the laser welding can be carried out through the laser to fix the valve piece and the battery cover plate.
[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A battery cover welding fixture for preventing incomplete soldering, characterized in that, include: The clamp body (1) has a groove (101) in the middle of its upper surface and a placement groove (2) for placing the battery cover is provided at the edge of the upper surface of the clamp body (1) and the groove (101) offset from each other. The positioning block (3) is set inside the placement groove (2) to extend into the inside of the battery cover through hole to support the explosion-proof valve plate; The negative pressure channel is set inside the fixture body (1) and corresponds to the positioning block (3) to hold the explosion-proof valve plate in place during welding.
2. The battery cover welding fixture for preventing false soldering according to claim 1, characterized in that: The placement slot (2) is circular.
3. The battery cover welding fixture for preventing incomplete soldering according to claim 1, characterized in that: A through groove (7) is provided in the middle of the inner side of the placement groove (2), and the two ends of the through groove (7) penetrate the clamp body (1).
4. The battery cover welding fixture for preventing incomplete soldering according to claim 1, characterized in that: The groove (101) is rectangular, and the placement slots (2) are evenly distributed along the long side of the groove (101).
5. A battery cover welding fixture for preventing incomplete soldering according to claim 1, characterized in that: The negative pressure channel includes a second connecting cavity (4), a first connecting cavity (5), and an interface (6). The clamp body (1) is provided with a first connecting cavity (5) on its inner side. The first connecting cavity (5) is provided with a second connecting cavity (4) corresponding to the positioning block (3) for holding the explosion-proof valve plate. The front surface of the clamp body (1) is provided with an interface (6) that communicates with the inside of the first connecting cavity (5).
6. A battery cover welding fixture for preventing incomplete soldering according to claim 5, characterized in that: The number of the second connecting cavity (4) is the same as the number of positioning blocks (3).
7. A battery cover welding fixture for preventing incomplete soldering according to claim 1, characterized in that: The positioning block (3) is ring-shaped.