A welding integral clamping fixture for soft-pack battery cell modules

Abstract

A welding integral clamping fixture for soft-pack battery cell modules includes a positioning mechanism, which includes a base plate with several mounting slots arranged side-by-side along the width of the base plate; several first buffer clamping mechanisms arranged along the length of the mounting slots, each first buffer clamping mechanism including a first connecting block, a first buffer member, and a first clamping member, the first connecting block being fixedly mounted on the base plate, one end of the first buffer member being movably connected to the first connecting block, and the other end of the first buffer member being fixedly connected to the first clamping member; and a second buffer clamping mechanism located between adjacent first buffer clamping mechanisms or on both sides of the base plate. This invention employs first and second buffer clamping mechanisms to ensure uniform and appropriate pressure during welding, avoiding issues such as incomplete solder joints, tab tearing, and cell damage, thus guaranteeing stable welding of the soft-pack battery cell module.

Description

Technical Field

[0001] This utility model relates to the field of battery cell welding fixture technology, and in particular to an integral clamping fixture for welding soft-pack battery cell modules. Background Technology

[0002] Traditional single-pressure welding fixtures used for welding soft-pack battery cell modules typically use a single rigid pressure plate and one or two quick clamps / cylinders to press all areas to be welded at once. The pressure cannot be zoned, buffered, or adjusted in real time. Consequently, the following problems arise: First, uneven pressure application can lead to incomplete welds or torn tabs. Second, the lack of pressure buffering makes it easy to apply too much or too little pressure, potentially damaging the battery cells or causing incomplete welds. Third, each welding point requires a process of "lifting → moving → pressing → welding," resulting in low welding efficiency.

[0003] Based on this, an integral clamping fixture for welding soft-pack battery cell modules is designed. Utility Model Content

[0004] The present invention aims to overcome the defects in the prior art and provide an integral clamping fixture for welding soft-pack battery cell modules.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a welding integral clamping fixture for soft-pack battery cell modules, including a positioning mechanism, wherein the positioning mechanism includes a base plate, and a plurality of mounting slots are arranged in parallel along the width direction of the base plate; including a plurality of first buffer clamping mechanisms arranged along the length direction of the mounting slots, wherein the first buffer clamping mechanism includes a first connecting block, a first buffer member and a first clamping member, the first connecting block is fixedly mounted on the base plate, one end of the first buffer member is movably connected to the first connecting block, and the other end of the first buffer member is fixedly connected to the first clamping member; including a second buffer clamping mechanism, wherein the second buffer clamping mechanism is located between adjacent first buffer clamping mechanisms or is arranged on both sides of the base plate.

[0006] In a preferred embodiment of the present invention, the first buffer includes a first fastener and a first spring. One end of the first fastener is movably connected to the first connecting block, and the other end of the first fastener is fixedly connected to the first clamping member. The first spring is sleeved on the first fastener, with one end of the first spring abutting against the lower end of the first connecting block and the other end of the first spring abutting against the upper end of the first clamping member.

[0007] As a preferred embodiment of the present invention, the first pressing member includes a first fixing part located in the middle and a first pressing part located on both sides of the first fixing part. The first pressing part protrudes downward and has a hollow center. A plurality of first vent holes are formed on both sides of the first pressing part.

[0008] As a preferred embodiment of the present invention, there are at least two first buffer members, which are symmetrically arranged front and back on the first fixing part.

[0009] As a preferred embodiment of the present invention, the second buffer pressing mechanism includes a second connecting block, a second buffer member, and a second pressing member. The second buffer member includes a second fastener and a second spring. One end of the second fastener is movably connected to the second connecting block, and the other end of the second fastener is fixedly connected to the second pressing member. The second spring is sleeved on the second fastener, with one end of the second spring abutting against the lower end of the second connecting block and the other end of the second spring abutting against the upper end of the second pressing member.

[0010] As a preferred embodiment of the present invention, the second pressing member includes a second pressing part in the middle and a second fixing part on both sides of the second pressing part. The second pressing part protrudes downward and is hollow in the middle. A plurality of second vent holes are formed on both sides of the second pressing part.

[0011] As a preferred embodiment of the present invention, there are at least two second buffer members, all of which are disposed on the second fixing part. The second buffer members are arranged symmetrically or diagonally with the second pressing part as the center.

[0012] As a preferred embodiment of the present invention, the second buffer pressing mechanism includes a second connecting member, one end of which is movably connected to the second connecting block, and the other end of which is fixedly connected to the second pressing member.

[0013] As a preferred embodiment of the present invention, the base plate includes a hollow portion, the mounting groove group includes at least two mounting grooves, and the hollow portion is located between the mounting grooves and above the first buffer pressing mechanism and the second buffer pressing mechanism.

[0014] As a preferred embodiment of this utility model, the positioning mechanism includes a mounting plate, which is located at both ends of the base plate to facilitate the installation of the base plate on the designated mechanism.

[0015] The beneficial effects of this utility model are: 1. This utility model employs a first buffer clamping mechanism and a second buffer clamping mechanism to ensure uniform pressure during welding and appropriate pressure magnitude, avoiding issues such as incomplete soldering, tab tearing, and cell damage, thus guaranteeing stable welding of the soft-pack battery cell module. Furthermore, the positioning mechanism can be equipped with multiple first buffer clamping mechanisms and second buffer clamping mechanisms, enabling simultaneous welding of multiple tabs of the soft-pack battery cell module, thereby improving welding efficiency.

[0016] 2. The first buffer component of this utility model consists of a first fastener and a first spring. When the first clamping component presses the electrode tab, the first spring is compressed after being subjected to a reaction force, and the first clamping component moves closer to the first connecting block. Thus, the first clamping component can apply appropriate pressure to the electrode tab, avoiding damage to the battery cell or poor soldering of the solder joint, thereby improving the welding quality. There are two first clamping parts, which can press the same adapter plate simultaneously during welding, avoiding poor soldering of the solder joint or tearing of the electrode tab, and ensuring that the welding part is subjected to uniform pressure.

[0017] 3. This utility model provides a second buffer clamping mechanism to cooperate with the first buffer clamping mechanism to realize the welding of more different types of soft-pack battery cell modules and improve the welding efficiency of soft-pack battery cell modules. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the first buffer clamping mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the second buffer clamping mechanism of this utility model; Figure 5 This is a schematic diagram of the structure of the first clamping component of this utility model; Figure 6 This is a structural schematic diagram of the second clamping component of this utility model; Figure 7 This is a schematic diagram illustrating the use of this utility model; In the figure, the reference numerals are as follows: 1. Positioning mechanism; 2. First buffer clamping mechanism; 3. Second buffer clamping mechanism; 11. Base plate; 12. Mounting plate; 21. First connecting block; 22. First buffer component; 23. First clamping component; 31. Second connecting block; 32. Second buffer component; 33. Second connecting component; 34. Second clamping component; 111. Mounting groove assembly; 112. Hollowed-out part; 221. First fastener; 222. First spring; 231. First fixing part; 232. First clamping part; 321. Second fastener; 322. Second spring; 341. Second clamping part; 342. Second fixing part; 1111. Mounting groove; 2321. First vent; 3411. Second vent. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-6As shown, a welding integral clamping fixture for soft-pack battery cell modules includes a positioning mechanism 1, which includes a base plate 11 with a plurality of mounting slots 111 arranged side by side along the width direction of the base plate 11; a plurality of first buffer clamping mechanisms 2 arranged along the length direction of the mounting slots 111, each first buffer clamping mechanism 2 including a first connecting block 21, a first buffer member 22 and a first clamping member 23, the first connecting block 21 being fixedly mounted on the base plate 11, one end of the first buffer member 22 being movably connected to the first connecting block 21, and the other end of the first buffer member 22 being fixedly connected to the first clamping member 23; and a second buffer clamping mechanism 3 located between adjacent first buffer clamping mechanisms 2 or arranged on both sides of the base plate 11.

[0021] Depending on the type of soft-pack battery cell module, the integral clamping fixture for welding soft-pack battery cell modules can either only set the first buffer clamping mechanism 2 to achieve welding of soft-pack battery cell modules, or set the first buffer clamping mechanism 2 in combination with the second buffer clamping mechanism 3 to achieve welding of soft-pack battery cell modules, or even only set the second buffer clamping mechanism 3 to achieve welding of soft-pack battery cell modules. The first buffer clamping mechanism 2 and the second buffer clamping mechanism 3 do not necessarily have to appear in the integral clamping fixture for welding soft-pack battery cell modules at the same time.

[0022] Specifically, the base plate 11 on the positioning mechanism 1 is used to install the first buffer clamping mechanism 2 and the second buffer clamping mechanism 3. The mounting groove group 111 on the base plate 11 facilitates the adjustment of the distance between the first buffer clamping mechanisms 2 or between the second buffer clamping mechanisms 3, so as to be suitable for welding different types of soft-pack battery cell modules. At the same time, several first buffer clamping mechanisms 2 and second buffer clamping mechanisms 3 can be installed on the positioning mechanism 1 to realize the common welding of multiple tabs in the soft-pack battery cell module, avoiding frequent "lifting → moving → clamping → welding" actions and improving welding efficiency. Furthermore, when the first clamping member 23 of the first buffer clamping mechanism 2 clamps the tab of the soft-pack battery module, the presence of the first buffer member 22 can achieve clamping buffering, making the pressure adjustable and avoiding over-pressure or insufficient pressure of the clamping fixture, which could lead to damage to the battery cell or poor soldering of the solder joint.

[0023] It should be noted that the principle of the second buffer clamping mechanism 3 clamping the tabs of the soft-pack battery module to achieve appropriate clamping pressure is the same as that of the first buffer clamping mechanism 2.

[0024] This utility model employs a first buffer clamping mechanism 2 and a second buffer clamping mechanism 3 to ensure uniform and appropriate pressure during welding, avoiding issues such as incomplete soldering, tearing of the tabs, and damage to the battery cells, thus guaranteeing the stable welding of the soft-pack battery cell module. Furthermore, multiple first buffer clamping mechanisms 2 and second buffer clamping mechanisms 3 can be installed on the positioning mechanism 1, enabling simultaneous welding of multiple tabs of the soft-pack battery cell module and improving welding efficiency.

[0025] The first buffer 22 includes a first fastener 221 and a first spring 222. One end of the first fastener 221 is movably connected to the first connecting block 21, and the other end of the first fastener 221 is fixedly connected to the first clamping member 23. The first spring 222 is sleeved on the first fastener 221. One end of the first spring 222 abuts against the lower end of the first connecting block 21, and the other end of the first spring 222 abuts against the upper end of the first clamping member 23.

[0026] The first pressing member 23 includes a first fixing part 231 located in the middle and first pressing parts 232 located on both sides of the first fixing part 231. The first pressing parts 232 protrude downward and are hollow in the middle, which reduces the weight of the first pressing part 232 itself. Several first vent holes 2321 are formed on both sides of the first pressing part 232 to facilitate ventilation inside the first pressing part 232. The first pressing part 232 is preferably trapezoidal. There are at least two first buffer members 22. The first buffer members 22 are symmetrically arranged front and back on the first fixing part 231 to ensure the uniformity of the force applied by the first buffer members 22 on the first pressing member 23, thereby improving the uniformity of the pressure applied by the first pressing member 23.

[0027] Specifically, the first fastener 221 is preferably a bolt, the first connecting block 21 has a through hole for the first fastener 221 to pass through, and the first clamping member 23 has a thread for fixed connection with the first fastener 221; the first spring 222 is sleeved on the first fastener 221 so that the first connecting block 21 and the first clamping member 23 are kept at a certain distance under the action of the spring. When the first clamping member 23 presses the tab of the soft-pack battery module, after being subjected to the reaction force, the first spring 222 is compressed, and the distance between the first connecting block 21 and the first clamping member 23 becomes smaller. Then, the first clamping member 23 applies appropriate pressure to the tab of the soft-pack battery module to facilitate tab welding. Furthermore, there are two first pressing parts 232, which can simultaneously press down on the same adapter plate during welding to ensure uniform pressure on the welding area.

[0028] The first buffer 22 of this utility model consists of a first fastener 221 and a first spring 222. When the first clamping member 23 clamps the electrode tab, the first spring 222 is compressed after being subjected to a reaction force. The first clamping member 23 moves closer to the first connecting block 21. Thus, the first clamping member 23 can apply appropriate pressure to the electrode tab, avoiding damage to the battery cell or poor soldering of the solder joint, thereby improving the quality of the welding. There are two first clamping parts 232, which can simultaneously press the same adapter plate during welding, avoiding poor soldering of the solder joint or tearing of the electrode tab, and ensuring that the welding part is subjected to uniform pressure.

[0029] The second buffer clamping mechanism 3 includes a second connecting block 31, a second buffer member 32, and a second clamping member 34. The second buffer member 32 includes a second fastener 321 and a second spring 322. One end of the second fastener 321 is movably connected to the second connecting block 31, and the other end of the second fastener 321 is fixedly connected to the second clamping member 34. The second spring 322 is sleeved on the second fastener 321. One end of the second spring 322 abuts against the lower end of the second connecting block 31, and the other end of the second spring 322 abuts against the upper end of the second clamping member 34.

[0030] The second clamping member 34 includes a second clamping part 341 in the middle and a second fixing part 342 located on both sides of the second clamping part 341. The second clamping part 341 protrudes downward and has a hollow center, which reduces the weight of the second clamping part 3412 itself. Several second vent holes 3411 are formed on both sides of the second clamping part 341 to facilitate ventilation inside the second clamping part 341. The second clamping part 341 is preferably trapezoidal.

[0031] There are at least two second buffer members 32, and both are disposed on the second fixing part 342. The second buffer members 32 are arranged symmetrically with respect to the second pressing part 341 or diagonally.

[0032] The second buffer clamping mechanism 3 includes a second connector 33, one end of which is movably connected to the second connecting block 31, and the other end of which is fixedly connected to the second clamping member 34.

[0033] Specifically, the second fastener 321 is preferably a bolt, the second connecting block 31 has a through hole for the second fastener 321 to pass through, and the second clamping member 34 has a thread for fixed connection with the second fastener 321; the second spring 322 is sleeved on the second fastener 321 so that the second connecting block 31 and the second clamping member 34 are kept at a certain distance under the action of the spring. When the second clamping member 34 clamps the electrode tab, after being subjected to the reaction force, the second spring 322 is compressed, the distance between the second connecting block 31 and the second clamping member 34 becomes smaller, and then the second clamping member 34 applies appropriate pressure to the electrode tab to facilitate electrode tab welding; Furthermore, the second clamping part 341 on the second clamping member 34 is one, which is mainly used to cooperate with the first clamping member 23 to adapt to different types of soft-pack battery cell modules; Furthermore, the second buffer 32 and the second connecting member 33 are preferably arranged diagonally to ensure that the force applied to the electrode tab is uniform when the second clamping member 34 is pressed down.

[0034] This utility model provides a second buffer clamping mechanism 3 to cooperate with the first buffer clamping mechanism 2 to realize the welding of more different types of soft-pack battery cell modules and improve the welding efficiency of soft-pack battery cell modules.

[0035] The base plate 11 includes a hollow portion 112. The mounting groove group 111 includes at least two mounting grooves 1111. The hollow portion 112 is located between the mounting grooves 1111 and is disposed above the first buffer clamping mechanism 2 and the second buffer clamping mechanism 3. The hollow portion 112 reduces the efficiency of the entire clamping fixture, and at the same time, allows the first buffer clamping mechanism 2 and the second buffer clamping mechanism 3 to be mounted on the base plate 11.

[0036] The positioning mechanism 1 includes a mounting plate 12, which is located at both ends of the base plate 11 to facilitate the installation of the base plate 11 on the designated mechanism.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0038] Although this document frequently uses reference numerals from the accompanying drawings: 1. Positioning mechanism, 2. First buffer clamping mechanism, 3. Second buffer clamping mechanism, 11. Base plate, 12. Mounting plate, 21. First connecting block, 22. First buffer component, 23. First clamping component, 31. Second connecting block, 32. Second buffer component, 33. Second connecting component, 34. Second clamping component, 111. Mounting groove assembly, 112. Hollowed-out portion, 221. First fastener, 222. First spring, 231. First fixing portion, 232. First clamping portion, 321. Second fastener, 322. Second spring, 341. Second clamping portion, 342. Second fixing portion, 1111. Mounting groove, 2321. First vent, 3411. Second vent, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A welding integral clamping fixture for soft-pack battery cell modules, characterized in that, It includes a positioning mechanism (1), which includes a base plate (11) and a plurality of mounting slots (111) arranged side by side along the width direction of the base plate (11). It includes several first buffer clamping mechanisms (2) arranged along the length of the mounting groove group (111). Each first buffer clamping mechanism (2) includes a first connecting block (21), a first buffer member (22) and a first clamping member (23). The first connecting block (21) is fixedly arranged on the base plate (11). One end of the first buffer member (22) is movably connected to the first connecting block (21), and the other end of the first buffer member (22) is fixedly connected to the first clamping member (23). It includes a second buffer pressing mechanism (3), which is located between adjacent first buffer pressing mechanisms (2) or on both sides of the base plate (11).

2. The integral clamping fixture for welding soft-pack battery cell modules according to claim 1, characterized in that, The first buffer (22) includes a first fastener (221) and a first spring (222). One end of the first fastener (221) is movably connected to the first connecting block (21), and the other end of the first fastener (221) is fixedly connected to the first clamping member (23). The first spring (222) is sleeved on the first fastener (221). One end of the first spring (222) abuts against the lower end of the first connecting block (21), and the other end of the first spring (222) abuts against the upper end of the first clamping member (23).

3. The integral clamping fixture for welding soft-pack battery cell modules according to claim 1, characterized in that, The first clamping member (23) includes a first fixing part (231) located in the middle and a first clamping part (232) located on both sides of the first fixing part (231). The first clamping part (232) protrudes downward and is hollow in the middle. A plurality of first vent holes (2321) are formed on both sides of the first clamping part (232).

4. The integral clamping fixture for welding soft-pack battery cell modules according to claim 3, characterized in that, There are at least two first buffer members (22), and the first buffer members (22) are symmetrically arranged in front and behind on the first fixing part (231).

5. The integral clamping fixture for welding soft-pack battery cell modules according to claim 1, characterized in that, The second buffer clamping mechanism (3) includes a second connecting block (31), a second buffer (32), and a second clamping member (34). The second buffer (32) includes a second fastener (321) and a second spring (322). One end of the second fastener (321) is movably connected to the second connecting block (31), and the other end of the second fastener (321) is fixedly connected to the second clamping member (34). The second spring (322) is sleeved on the second fastener (321). One end of the second spring (322) abuts against the lower end of the second connecting block (31), and the other end of the second spring (322) abuts against the upper end of the second clamping member (34).

6. The integral clamping fixture for welding soft-pack battery cell modules according to claim 5, characterized in that, The second clamping member (34) includes a second clamping part (341) in the middle and a second fixing part (342) on both sides of the second clamping part (341). The second clamping part (341) protrudes downward and is hollow in the middle. Several second vent holes (3411) are formed on both sides of the second clamping part (341).

7. The integral clamping fixture for welding soft-pack battery cell modules according to claim 6, characterized in that, There are at least two second buffer members (32) and they are all disposed on the second fixing part (342). The second buffer members (32) are symmetrically disposed with the second pressing part (341) as the center or diagonally disposed.

8. The integral clamping fixture for welding soft-pack battery cell modules according to claim 5, characterized in that, The second buffer clamping mechanism (3) includes a second connector (33), one end of which is movably connected to the second connector (31), and the other end of which is fixedly connected to the second clamping member (34).

9. The integral clamping fixture for welding soft-pack battery cell modules according to claim 1, characterized in that, The base plate (11) includes a hollow part (112), and the mounting groove group (111) includes at least two mounting grooves (1111). The hollow part (112) is located between the mounting grooves (1111) and above the first buffer pressing mechanism (2) and the second buffer pressing mechanism (3).

10. The integral clamping fixture for welding soft-pack battery cell modules according to claim 1, characterized in that, The positioning mechanism (1) includes a mounting plate (12), which is located at both ends of the base plate (11) to facilitate the installation of the base plate (11) on the designated mechanism.

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