Lithium battery laser welding clamp

Abstract

The utility model relates to a lithium battery laser welding clamp which comprises a rotatable rotating disc, and four sets of clamping mechanisms are evenly distributed on the rotating disc. The clamping mechanism comprises a supporting seat fixed on the turntable, the supporting seat is provided with an a-edge positioning seat and a b-edge positioning seat which is distributed perpendicular to the a-edge positioning seat, and the turntable is also provided with a c-edge propping seat which can move towards one side close to the battery cell A and a d-edge propping seat which is distributed perpendicular to the c-edge propping seat; a pressing seat is further arranged on the side face of the supporting seat. Firstly, a battery cell A is placed on a supporting seat, two vertical sides of the battery cell A can be preliminarily positioned through an a-side positioning seat and a b-side positioning seat, then a c-side abutting seat and a d-side abutting seat are driven to move towards one side close to the battery cell A until the battery cell A is completely positioned on the supporting seat, and then a protection plate B is pressed on the battery cell A through a pressing seat, so that the battery cell A is completely positioned. And the battery cell A and the protection plate B are connected more tightly, so that the subsequent welding precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery processing, in particular to a lithium battery laser welding fixture. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and uses non-aqueous electrolyte solutions. Lithium batteries are mainly composed of two major parts: the battery cell and the protection board.

[0003] During the processing of lithium batteries, the above two components usually need to be welded together to complete the assembly of the lithium batteries. When welding with a welding machine, a welding fixture is needed to combine the two components together. When clamping, the existing welding fixture usually uses relatively moving clamps to clamp the two sides of the battery cell. During the welding process, the battery components are easily displaced, thereby affecting the welding accuracy. Therefore, a lithium battery laser welding fixture is proposed to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a lithium battery laser welding fixture, which has the advantages of stable clamping, etc., and solves the problem that battery components are easily displaced during welding, thereby affecting welding accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery laser welding fixture, comprising a rotatable turntable, on which four groups of clamping mechanisms are evenly distributed;

[0006] The clamping mechanism includes a support seat fixed on the turntable, the support seat is provided with an a-side positioning seat and a b-side positioning seat vertically distributed with the a-side positioning seat, the turntable is also provided with a c-side clamping seat that can move toward the side close to the battery cell A and a d-side clamping seat vertically distributed with the c-side clamping seat, and the side of the support seat is also provided with a clamping seat that presses the protective plate B onto the battery cell A.

[0007] Furthermore, the c-side tightening seat, the d-side tightening seat and the pressing seat are all fixed with a linkage plate extending to the bottom of the turntable, the bottom edges of the three linkage plates are all fixed with a sloped guide seat, a T-shaped guide column is fixed in the linkage plate, and a fixed seat is fixed on the turntable and corresponding to the three linkage plates, the T-shaped guide column penetrates the fixed seat, and a reset spring is sleeved on the T-shaped guide column, and the reset spring is located between the linkage plate and the fixed seat.

[0008] Furthermore, a driving cylinder is provided on the sides of the upper and lower material positions of the turntable, and a pressure wheel corresponding to the sloped guide seat is fixed to the output shaft of the driving cylinder.

[0009] Furthermore, the linkage plate is slidably arranged on the turntable through a slider and a slide rail, and a corresponding avoidance opening for linear movement of the linkage plate is provided at a position of the turntable corresponding to the d-side abutment seat.

[0010] Furthermore, a pair of L-shaped limit seats are fixed on the support seat, and the protection plate B can be placed on the L-shaped limit seats. A pair of clamping blocks are fixed to the top surface of the clamping seat by bolts.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0012] The lithium battery laser welding fixture comprises an a-side positioning seat, a b-side positioning seat, a c-side pressing seat and a d-side pressing seat, which form a positioning space for a battery cell A. First, the battery cell A is placed on the support seat, and the two vertical sides of the battery cell A can be preliminarily positioned by the a-side positioning seat and the b-side positioning seat, and then the c-side pressing seat and the d-side pressing seat are driven to move toward the side close to the battery cell A until the battery cell A is completely positioned on the support seat, and then the protection plate B is pressed onto the battery cell A by the pressing seat, so that the assembly of the battery components can be completed, and the battery cell A and the protection plate B are more tightly connected, which helps to improve the subsequent welding accuracy;

[0013] After loading, the assembled battery components can be driven by the turntable to rotate to the side of the welding machine, and then the welding machine can be used directly for welding. The four-station setting ensures that the loading and unloading of battery components will not affect the welding of the battery, which helps to improve the processing efficiency of lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a top view schematic diagram of the clamping mechanism of the utility model;

[0016] Figure 3 This is a front view schematic diagram of the clamping mechanism of the utility model;

[0017] Figure 4 It is a side view schematic diagram of the clamping mechanism of the utility model;

[0018] Figure 5 This is a schematic diagram of the clamping mechanism of the utility model from above;

[0019] Figure 6 It is a schematic diagram of the positions of the L-shaped limit seat and the pressing block in the clamping mechanism of the utility model;

[0020] Figure 7 It is a schematic diagram of a support seat in the clamping mechanism of the utility model.

[0021] In the figure: 1. turntable; 2. clamping mechanism; 201. support seat; 202. a-side positioning seat; 203. b-side positioning seat; 204. c-side pressing seat; 205. d-side pressing seat; 206. pressing seat; 207. linkage plate; 208. slope guide seat; 209. T-type guide column; 210. fixed seat; 211. reset spring; 212. driving cylinder; 213. pressure wheel; 214. slider; 215. slide rail; 216. L-type limit seat; 217. pressing block; A. battery cell; B. protection plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-7 A lithium battery laser welding fixture in this embodiment includes a rotatable turntable 1, on which four groups of clamping mechanisms 2 are evenly distributed. The turntable 1 is driven to rotate by a rotating driving source, so that the four groups of clamping mechanisms 2 can be driven to rotate to the side of the welding machine in turn, and the welding is performed in turn by the welding machine. The setting of the four stations ensures that the loading and unloading of battery components will not affect the welding of the battery, which helps to improve the processing efficiency of lithium batteries.

[0024] The clamping mechanism 2 can clamp and tighten the two components of the battery at the same time, which is convenient for the welding machine to weld quickly. The clamping mechanism 2 includes a support seat 201 fixed on the turntable 1, and the support seat 201 is provided with an a-side positioning seat 202 and a b-side positioning seat 203 vertically distributed with the a-side positioning seat 202. The battery cell A can be placed on the support seat 201, and is initially positioned by the a-side positioning seat 202 and the b-side positioning seat 203. The turntable 1 is also provided with a c-side tightening seat 204 that can move toward the side close to the battery cell A and a d-side tightening seat 205 that is vertically distributed with the c-side tightening seat 204. The battery cell A can be locked on the support seat 201 by the c-side tightening seat 204 and the d-side tightening seat 205. In addition, a pressing seat 206 that presses the protection plate B onto the battery cell A is also provided on the side of the support seat 201, so that the battery cell A and the protection plate B are connected more tightly.

[0025] The a-side positioning seat 202, the b-side positioning seat 203, the c-side tightening seat 204 and the d-side tightening seat 205 form a positioning space for the battery cell A. First, place the battery cell A on the support seat 201. The two vertical sides of the battery cell A can be preliminarily positioned by the a-side positioning seat 202 and the b-side positioning seat 203. Then, the c-side tightening seat 204 and the d-side tightening seat 205 are driven to move toward the side close to the battery cell A until the battery cell A is completely positioned on the support seat 201. Then, the protection plate B is pressed onto the battery cell A by the pressing seat 206. The assembly of the battery components can be completed. Finally, the assembled battery components are driven by the turntable 1 to rotate to the side of the welding machine, and the welding machine can be directly used for welding.

[0026] As for how the c-side abutment seat 204, the d-side abutment seat 205 and the pressing seat 206 perform the abutment operation, Figure 2-5 As shown, the c-side tightening seat 204, the d-side tightening seat 205 and the pressing seat 206 are all fixed with a linkage plate 207 extending to the bottom of the turntable 1, the bottom edges of the three linkage plates 207 are all fixed with a sloped guide seat 208, a T-shaped guide column 209 is fixed in the linkage plate 207, and a fixed seat 210 is fixed on the turntable 1 and at the corresponding three linkage plates 207. The T-shaped guide column 209 penetrates the fixed seat 210, and a reset spring 211 is sleeved on the T-shaped guide column 209, and the reset spring 211 is located between the linkage plate 207 and the fixed seat 210. When the linkage plate 207 drives the T-shaped guide column 209 to move to the side close to the corresponding fixed seat 210, the reset spring 211 is squeezed. After the battery component is placed, the reset spring 211 resets the linkage plate 207 to fix the battery component.

[0027] In addition, if Figure 1 In the shown state, a driving cylinder 212 is also provided on the side of the upper and lower material positions of the turntable 1. The driving cylinder 212 and the rotating driving source at the bottom of the turntable 1 are installed on the same mounting surface, which can facilitate the loading and assembly of the battery cell A and the protection plate B and the unloading of the assembled battery components at the upper and lower material positions. The output shaft of the driving cylinder 212 is fixed with a pressing wheel 213 corresponding to the sloped guide seat 208. When the pressing wheel 213 moves upward, the slope surface of the sloped guide seat 208 can be squeezed to make it move linearly. Since the slope surfaces of the two corresponding sloped guide seats 208 on the d-side clamping seat 205 and the clamping seat 206 are opposite, a pair of pressing wheels 213 can be driven to move upward at the same time by the same driving cylinder 212, so that the slope surfaces of the corresponding two sloped guide seats 208 can be squeezed at the same time, thereby making the d-side clamping seat 205 and the clamping seat 206 move away from each other.

[0028] In order to improve the stability of the linkage plate 207 during movement, the linkage plate 207 is slidably set on the turntable 1 through the slider 214 and the slide rail 215, and an escape opening for the linear movement of the corresponding linkage plate 207 is opened at the position of the d-side tightening seat 205 on the turntable 1, so that the linkage plate 207 under the d-side tightening seat 205 can move freely.

[0029] In addition, a pair of L-shaped limit seats 216 are fixed on the support seat 201, and the protection plate B can be placed on the L-shaped limit seat 216. A pair of clamping blocks 217 are fixed to the top surface of the clamping seat 206 by bolts. The clamping seat 206 drives the clamping block 217 to move toward the protection plate B until the protection plate B is clamped on the L-shaped limit seat 216. The clamping seat 206 is provided with a plurality of equally spaced mounting screw holes, and the clamping block 217 is provided with a strip hole. The bolts pass through the strip holes of the clamping block 217 and are screwed into the mounting screw holes. The position of the clamping block 217 can be flexibly adjusted according to actual usage requirements.

[0030] The installation methods of the c-side tightening seat 204 and the d-side tightening seat 205 and the corresponding interlocking plate 207 respectively, and the installation methods of the a-side positioning seat 202 and the b-side positioning seat 203 and the turntable 1 are respectively the same as the installation method of the clamping block 217, so the installation positions of the a-side positioning seat 202, the b-side positioning seat 203, the c-side tightening seat 204 and the d-side tightening seat 205 can be flexibly fine-tuned according to the actual size of the product.

[0031] By using the above-mentioned lithium battery laser welding fixture, the two parts of the battery can be firmly assembled together to improve the subsequent laser welding efficiency. The specific clamping method is as follows:

[0032] First, the driving cylinder 212 is started, and the three groups of pressing wheels 213 move up and squeeze the three interlocking plates 207 respectively, so that the c-side abutting seat 204, the d-side abutting seat 205 and the pressing seat 206 move outward at the same time, and the corresponding return spring 211 is squeezed, and then the battery cell A is placed on the support seat 201, and the two vertical sides of the battery cell A are respectively in contact with the a-side positioning seat 202 and the b-side positioning seat 203 for preliminary positioning, and then the driving cylinder 212 below the c-side abutting seat 204 is pressed. 12 contracts, and the corresponding return spring 211 is no longer squeezed, and the c-side pressing seat 204 can press the side of the battery cell A against the a-side positioning seat 202, and then place the protection plate B on the end of the battery cell A, and drive the other driving cylinder 212 to contract, and the d-side pressing seat 205 and the pressing seat 206 can move relative to each other, and press the protection plate B against the end of the battery cell A. After the battery cell A and the protection plate B are assembled, the turntable 1 can be used to rotate the workpiece to the side of the welding machine and welded by the welding machine.

[0033] The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery laser welding fixture, characterized in that: It comprises a rotatable turntable (1), on which four groups of clamping mechanisms (2) are evenly distributed; The clamping mechanism (2) comprises a support seat (201) fixed on the turntable (1); the support seat (201) is provided with an a-side positioning seat (202) and a b-side positioning seat (203) vertically distributed with the a-side positioning seat (202); the turntable (1) is also provided with a c-side pressing seat (204) movable toward a side close to the battery cell A and a d-side pressing seat (205) vertically distributed with the c-side pressing seat (204); and a pressing seat (206) for pressing the protection plate B onto the battery cell A is also provided on the side of the support seat (201).

2. A lithium battery laser welding fixture according to claim 1, characterized in that: The c-side abutting seat (204), the d-side abutting seat (205) and the pressing seat (206) are all fixed with a linkage plate (207) extending to the bottom of the rotating disk (1); the bottom edges of the three linkage plates (207) are all fixed with a sloped guide seat (208); a T-shaped guide column (209) is fixed inside the linkage plate (207); a fixed seat (210) is fixed on the rotating disk (1) and at locations corresponding to the three linkage plates (207); the T-shaped guide column (209) passes through the fixed seat (210); a return spring (211) is sleeved on the T-shaped guide column (209); and the return spring (211) is located between the linkage plate (207) and the fixed seat (210).

3. A lithium battery laser welding fixture according to claim 2, characterized in that: A driving cylinder (212) is also provided on the side of the upper and lower material positions of the turntable (1), and a pressure wheel (213) corresponding to the sloped guide seat (208) is fixed to the output shaft of the driving cylinder (212).

4. A lithium battery laser welding fixture according to claim 2, characterized in that: The linkage plate (207) is slidably arranged on the turntable (1) via a slider (214) and a slide rail (215), and a clearance opening for linear movement of the linkage plate (207) is provided at a position on the turntable (1) corresponding to the d-side abutment seat (205).

5. The lithium battery laser welding fixture according to claim 1, characterized in that: A pair of L-shaped limit seats (216) are fixed on the support seat (201), and the protection plate B can be placed on the L-shaped limit seats (216). A pair of clamping blocks (217) are fixed on the top surface of the clamping seat (206) by bolts.

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