CN220515861U - Welding jig and welding device for lithium battery - Google Patents

Abstract

The utility model provides a welding fixture and a welding device for lithium batteries, wherein the welding fixture includes: a clamping mechanism, a welding base and a pressing mechanism; the clamping mechanism is arranged below the welding base; the pressing The tightening mechanism is arranged above the welding base. By setting up a clamping mechanism, battery cells of different sizes are clamped to avoid loosening between the battery core and the adapter sheet during welding and avoid false welding.

Description

Welding fixtures and welding equipment for lithium batteries

Technical field

The utility model relates to the field of lithium batteries, in particular to a welding fixture and a welding device for lithium batteries.

Background technique

Lithium-ion batteries are the leader in rechargeable batteries after nickel-cadmium batteries. Due to their excellent characteristics, lithium-ion batteries are widely used in mobile phone batteries, power tools, remote controls, electric vehicles and energy storage. and other fields.

In the lithium battery industry, the performance of the battery cells needs to be simulated through various charging and discharging equipment, high and low temperature chambers, etc. to simulate the actual use process of the battery cells. However, the connection device required for testing is not left during the production of lithium batteries, and the adapter piece needs to be welded before testing. The battery core can be tested, but manual welding can cause problems such as virtual welding and empty soldering. Therefore, a welding fixture is needed to achieve battery core welding.

Currently existing welding fixtures can be designed according to the size of the battery core to achieve welding of the battery core adapter piece. However, this welding fixture can only weld one type of battery core. During the actual test process, different welding fixtures need to be designed and purchased according to different types of battery cores, which increases the overall cost. At the same time, the welding fixture needs to be replaced frequently. To meet the welding needs of different types of battery cores, resulting in a reduction in overall welding efficiency.

The above problems are currently urgently to be solved.

Utility model content

The purpose of this utility model is to provide a welding fixture and a welding device for lithium batteries.

In order to solve the above technical problems, the utility model provides a welding fixture, which includes:

Clamping mechanism, welding base and pressing mechanism;

The clamping mechanism is arranged below the welding base;

The pressing mechanism is arranged above the welding base.

Further, the welding base is provided with a communication groove;

The clamping mechanism is suitable for clamping and fixing the battery core, and leaking the poles of the battery core from the communication groove;

The pressing mechanism is adapted to fix the adapter piece on the pole of the battery core clamped by the clamping mechanism.

Further, the clamping mechanism includes a support plate, a first clamping part and a second clamping part;

The first clamping part and the second clamping part are arranged oppositely and elastically connected to the support plate.

Further, the support plate is provided with a first sliding groove and a second sliding groove along the horizontal direction;

The first clamping part is elastically connected in the first sliding groove through a first return spring;

The second clamping part is elastically connected in the second sliding groove through a second return spring;

The elastic ends of the first return spring and the second return spring are arranged oppositely.

Further, the distance between the first sliding groove and the second sliding groove is smaller than the thickness of the battery core.

Further, a first limiting block is provided at an end of the first clamping portion away from the battery core;

The first limiting block extends from the first sliding groove;

A second limiting block is provided at an end of the second clamping portion away from the battery core;

The second limiting block extends from the second sliding groove.

Further, the clamping mechanism also includes a first handle, a first connecting main arm and a first connecting auxiliary arm,

One end of the first connecting sub-arm is rotatably connected between the first sliding and the second sliding groove, and the other end of the first connecting sub-arm is rotatably connected to one end of the first connecting main arm;

The other end of the first connecting main arm is rotatably connected to a first grip;

The bottom surface of the first connecting main arm resists the first limiting block.

Further, the clamping mechanism also includes: a second handle, a second connecting main arm and a second connecting auxiliary arm;

One end of the second connecting sub-arm is rotatably connected between the second slide and the second sliding groove, and the other end of the second connecting sub-arm is rotatably connected to one end of the second main connecting arm;

The other end of the second connecting main arm is rotatably connected to a second grip;

The bottom surface of the second connecting main arm resists the second limiting block.

Further, a support flange extends inward from the inner wall of the communication groove.

The utility model also provides a welding device for lithium batteries, including a device body and the above-mentioned welding fixture;

The welding fixture is fixedly mounted on the device body.

The beneficial effect of the utility model is that the utility model provides a welding fixture and a welding device for lithium batteries, wherein the welding fixture includes: a clamping mechanism, a welding base and a pressing mechanism; the clamping mechanism is provided on the Below the welding base; the pressing mechanism is arranged above the welding base. By setting up a clamping mechanism, battery cells of different sizes are clamped to avoid loosening between the battery core and the adapter sheet during welding and avoid false welding.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and examples.

Figure 1 is a schematic structural diagram of the welding fixture provided in this embodiment.

FIG. 2 is a schematic structural diagram of the first clamping part provided in this embodiment.

Figure 3 is a schematic structural diagram of the welding base provided in this embodiment.

In the figure: 100. Clamping mechanism; 110. Support plate; 111. First sliding groove; 112. Second sliding groove; 120. First clamping part; 121. First limiting block; 130. Second clamping 140. First grip; 150. First connection main arm; 160. First connection auxiliary arm; 200. Welding base; 210. Communication groove; 211. Support flange; 300. Pressure mechanism; 310. Pressure head; 311, first metal frame; 312, second metal frame; 320, pressing handle.

Detailed ways

The utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present utility model in a schematic manner, and therefore only show the structures related to the present utility model.

Example 1

Referring to Figures 1-3, this embodiment provides a welding fixture, including: a clamping mechanism 100, a welding base 200 and a pressing mechanism 300; the clamping mechanism 100 is provided below the welding base 200; The pressing mechanism 300 is disposed above the welding base 200 . The clamping mechanism 100 is provided to clamp battery cores of different sizes to avoid loosening between the battery core and the adapter sheet during welding and avoid false soldering.

In this embodiment, the welding base 200 is provided with a communication slot 210; the clamping mechanism 100 is suitable for clamping and fixing the battery core, and leaking the poles of the battery core from the communication slot 210; The pressing mechanism 300 is adapted to fix the adapter piece on the pole of the battery core clamped by the clamping mechanism 100 . By forming a communication slot 210 on the welding base 200, and disposing the battery core and the adapter sheet on both sides of the welding base 200, and communicating through the communication slot 210, it is convenient to connect and fix the battery core and the adapter sheet.

In this embodiment, the clamping mechanism 100 includes a support plate 110, a first clamping part 120 and a second clamping part 130; the first clamping part 120 and the second clamping part 130 are arranged oppositely. , and elastically connected to the support plate 110 . Battery cores of different sizes are clamped and fixed by the first clamping part 120 and the second clamping part 130 to prevent the battery cores from loosening.

Specifically, the support plate 110 has a first sliding groove 111 and a second sliding groove 112 along the horizontal direction; the first clamping portion 120 is elastically connected in the first sliding groove 111 through a first return spring. ; The second clamping portion 130 is elastically connected in the second sliding groove 112 through a second return spring; the elastic ends of the first return spring and the second return spring are arranged oppositely. It should be noted that when the first return spring and the second return spring are in the initial state, the first clamping part 120 and the second clamping part 130 are pushed to the first sliding groove 111 and the second sliding groove 112 respectively. The wall of the tank resists.

During use, the first clamping part 120 and the second clamping part 130 are pushed outward, the first clamping part 120 and the second clamping part 130 are opened, and then the battery core is inserted into the first clamping part 120 and the second clamping part 130, the first clamping part 120 and the second clamping part 130 are released, and reset occurs under the action of the first return spring and the second return spring, thereby clamping the battery core. remain fixed.

In this embodiment, the distance between the first sliding groove 111 and the second sliding groove 112 is smaller than the thickness of the battery core. Since the distance between the first sliding groove 111 and the second sliding groove 112 is less than the thickness of the battery core, the battery core can be clamped when the first clamping part 120 and the second clamping part 130 are reset. .

In this embodiment, a support flange 211 extends inward from the inner wall of the communication groove 210 . By setting the support flange 211, the adapter piece is supported.

In this embodiment, the pressing mechanism 300 includes a pressing head 310 and a pressing handle 320; the pressing head 310 and the pressing handle 320 are both rotatably connected to the welding base 200. It should be noted that the pressure head 310 includes a first metal frame 311, a second metal frame 312 and

Example 2

This embodiment provides a welding fixture with the same structure as Embodiment 1. The difference is:

In this embodiment, a first limiting block 121 is provided at an end of the first clamping part 120 away from the battery core; the first limiting block 121 extends from the first sliding groove 111; A second limiting block is provided at an end of the second clamping portion 130 away from the battery core; the second limiting block protrudes from the second sliding groove 112 .

The clamping mechanism 100 further includes a first grip 140, a first connecting main arm 150, and a first connecting sub-arm 160. One end of the first connecting sub-arm 160 is rotatably connected to the first sliding and the first connecting arm. Between the second sliding grooves 112, the other end of the first connecting sub-arm 160 is rotatably connected to one end of the first connecting main arm 150; the other end of the first connecting main arm 150 is rotatably connected to a first handle. The bottom surface of the handle 140; the first connection main arm 150 resists the first limiting block 121. A lever is formed by the first connecting main arm 150 and the first connecting sub-arm 160. The length of the first connecting column arm is greater than the length of the first connecting sub-arm 160, so that the first grip 140 can move the first connecting arm with a smaller force. The return spring is compressed to facilitate the clamping of the battery core.

The clamping mechanism 100 further includes: a second grip, a second connecting main arm and a second connecting sub-arm; one end of the second connecting sub-arm is rotatably connected to the second slide and the second sliding groove 112 The other end of the second connecting sub-arm is rotatably connected to one end of the second connecting main arm; the other end of the second connecting main arm is rotatably connected to a second handle; the second connecting main arm is rotatably connected to one end of the second connecting main arm; The bottom surface of the arm resists the second limiting block. A lever is formed by the second connecting main arm and the second connecting sub-arm. The length of the second connecting column arm is greater than the length of the second connecting sub-arm, so that the second grip can compress the second return spring with a smaller force. , which facilitates the clamping of batteries.

Example 3

This embodiment provides a welding device for lithium batteries, including a device body and a welding fixture as provided in any one of Embodiments 1-2; the welding fixture is fixedly mounted on the device body.

In summary, the present utility model provides a welding fixture and a welding device for lithium batteries. The welding fixture includes: a clamping mechanism 100, a welding base 200 and a pressing mechanism 300; the clamping mechanism 100 is provided at the The pressing mechanism 300 is arranged below the welding base 200; the pressing mechanism 300 is arranged above the welding base 200. The clamping mechanism 100 is provided to clamp battery cores of different sizes to avoid loosening between the battery core and the adapter sheet during welding and avoid false soldering.

Each device selected in this application (components with no specific structure specified) are universal standard parts or components known to those skilled in the art. Their structures and principles can be known by those skilled in the art through technical manuals or through routine experimental methods. informed. Moreover, the software programs involved in this application are all existing technologies, and this application does not involve any improvements to the software programs.

In the description of the embodiments of the present utility model, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. The orientation structure and operation of the invention cannot be construed as limitations of the present invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, each functional unit in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

Taking the above-mentioned ideal embodiments of the present invention as inspiration and through the above description, relevant staff can make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of this utility model is not limited to the content in the description, and must be determined based on the scope of the claims.

Claims (7)

1. A welding fixture, characterized in that it includes: Clamping mechanism, welding base and pressing mechanism; The clamping mechanism is arranged below the welding base; The pressing mechanism is arranged above the welding base; The welding base is provided with a communication groove; The clamping mechanism is suitable for clamping and fixing the battery core, and leaking the poles of the battery core from the communication groove; The pressing mechanism is adapted to fix the adapter piece on the pole of the battery core clamped by the clamping mechanism; The clamping mechanism includes a support plate, a first clamping part and a second clamping part; The first clamping part and the second clamping part are arranged oppositely and are elastically connected to the support plate; The support plate has a first sliding groove and a second sliding groove along the horizontal direction; The first clamping part is elastically connected in the first sliding groove through a first return spring; The second clamping part is elastically connected in the second sliding groove through a second return spring; The elastic ends of the first return spring and the second return spring are arranged oppositely. 2. The welding fixture according to claim 1, characterized in that, The distance between the first sliding groove and the second sliding groove is smaller than the thickness of the battery core. 3. The welding fixture according to claim 1, characterized in that: A first limiting block is provided at an end of the first clamping portion away from the battery core; The first limiting block extends from the first sliding groove; A second limiting block is provided at an end of the second clamping portion away from the battery core; The second limiting block extends from the second sliding groove. 4. The welding fixture according to claim 3, characterized in that, The clamping mechanism also includes a first grip, a first connecting main arm and a first connecting auxiliary arm, One end of the first connecting sub-arm is rotatably connected between the first sliding and the second sliding groove, and the other end of the first connecting sub-arm is rotatably connected to one end of the first connecting main arm; The other end of the first connecting main arm is rotatably connected to a first grip; The bottom surface of the first connecting main arm resists the first limiting block. 5. The welding fixture according to claim 3, characterized in that, The clamping mechanism also includes: a second handle, a second connecting main arm and a second connecting auxiliary arm; One end of the second connecting sub-arm is rotatably connected between the second slide and the second sliding groove, and the other end of the second connecting sub-arm is rotatably connected to one end of the second main connecting arm; The other end of the second connecting main arm is rotatably connected to a second grip; The bottom surface of the second connecting main arm resists the second limiting block. 6. The welding fixture according to claim 1, characterized in that: A support flange extends inward from the inner wall of the communication groove. 7. A welding device for lithium batteries, characterized in that it includes a device body and a welding fixture as claimed in any one of claims 1 to 6; The welding fixture is fixedly mounted on the device body.