End plate assembly of battery module welding tool

Abstract

The utility model discloses an end plate assembly of a battery module welding tool. The end plate assembly comprises a support and a pressing mechanism. The support is provided with a through welding avoiding seam. The pressing mechanism is arranged on the support and comprises a pressing block and an operation assembly, the operation assembly is in transmission connection with the pressing block and used for driving the pressing block to move in the direction perpendicular to the support, the pressing block is used for abutting against a battery module, the pressing block is provided with an air inlet nozzle, a channel and an air outlet, and the air inlet nozzle is communicated with the channel. And the air inlet nozzle is communicated with the air outlet through the channel. According to the end plate assembly of the battery module welding tool, the air inlet nozzle, the channel and the air outlet are formed in the pressing block, the air inlet nozzle is communicated with the air outlet through the channel, the air blowing device is connected to the air inlet nozzle, protective gas blown out of the air blowing device enters the channel from the air inlet nozzle and then is blown out of the air outlet to a weld joint, and therefore the protective gas is blown out of the weld joint. The short-distance air blowing operation of the welding seam is achieved, the air blowing effect is good, and the welding quality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module welding, in particular to an end plate assembly of a welding tooling for battery modules. Background Technique

[0002] As Figure 1 shown, the existing battery module 3 generally includes a battery cell group 33, two end plates 31 and two side plates 32. The two end plates 31 are respectively arranged at both ends of the battery cell group 33 along the length direction. Each battery cell of the battery cell group 33 is arranged between the two end plates 31. The two side plates 32 are respectively located on both sides of the battery cell group 33 along the width direction. The side plate 32 has a main board 321 and bent plates 322 located at both ends of the main board 321. The end plate 31 is perpendicular to the main board 321. The bent plate 322 is adhesively connected to the side of the end plate 31 facing away from the battery cell group 33. The two end plates 31 and the two side plates 32 clamp and fix the battery cell group 33. There will be a gap at the connection between the bent plate 322 and the end plate 31, and the gap needs to be welded, which can be called the weld seam here.

[0003] In the prior art, the weld seam is usually welded by laser. During laser welding, a welding tooling is needed. The end plate assembly of the welding tooling includes a bracket and a pressing mechanism. The bracket has a through welding avoidance seam. During welding, the bracket is arranged between the end plate 31 and the laser. The pressing mechanism presses the bent plate 322 to make it closely fit with the end plate 31. The welding avoidance seam faces the weld seam. Then, the laser is used to emit laser light towards the welding avoidance seam. The laser light emitted through the welding avoidance seam just falls on the weld seam, and the weld seam is subjected to laser welding treatment. During laser welding, it is usually necessary to blow air at the welding position, that is, blow protective gas at the welding position, which can ensure the welding quality.

[0004] However, the existing blowing devices are integrated with the laser. During the welding process, the laser usually needs to be far away from the weld seam. In this way, the protective gas blown out from the position of the laser is far away from the weld seam position, the protection effect is not good, the appearance of the weld seam is poor, and the blowing effect is relatively poor, thus affecting the welding quality. Content of the Utility Model

[0005] To solve one of the above problems, the utility model provides an end plate assembly of a welding tooling for battery modules.

[0006] The utility model adopts the following technical solutions:

[0007] An end plate assembly of a welding tooling for battery modules, comprising:

[0008] A bracket, the bracket having a through welding avoidance seam;

[0009] A clamping mechanism is arranged on the bracket, and the clamping mechanism includes a clamping block and an operating component. The operating component is transmission-connected to the clamping block and is used to drive the clamping block to move in a direction perpendicular to the bracket. The clamping block is used to abut against the battery module. The clamping block has an air inlet nozzle, a channel and an air outlet, and the air inlet nozzle is connected to the air outlet through the channel.

[0010] Optionally, the pressing block has a main block body and a plate body;

[0011] The main block and the plate are detachably connected, the channel comprises an inner cavity formed between the main block and the plate, the air outlet is formed between the main block and the plate, the air outlet is connected to the inner cavity, and the air inlet is connected to the inner cavity.

[0012] Optionally, the air outlet is a long slit, and the air outlet extends along the length direction of the pressing block.

[0013] Optionally, the plate body has a connecting edge and a mouth forming edge, the connecting edge and the main block are sealingly matched, and the air outlet is formed between the mouth forming edge and the main block.

[0014] Optionally, a first inclined surface is provided on one side of the plate body located at the mouth forming edge, and a second inclined surface is provided on the edge of the main block body;

[0015] The first inclined surface and the second inclined surface are located opposite to each other, and an inclined air outlet is formed between the first inclined surface and the second inclined surface.

[0016] Optionally, the compression block includes an air duct block;

[0017] The air duct block is connected to a side of the main block away from the plate body, and a dust removal air duct is formed between the air duct block and the main block.

[0018] Optionally, the pressing block includes a dust collecting cover, and the pressing block has a first side port and a second side port connected to the dust removal air duct;

[0019] The dust collecting hood is connected to the pressing block, and the dust collecting hood covers the first side port.

[0020] Optionally, the end plate assembly of the battery module welding tooling includes an elastic member, and the elastic member is arranged between the bracket and the pressing block;

[0021] The operating assembly includes a connecting shaft and a rotating handle, wherein the connecting shaft passes through the bracket and is connected to the pressing block;

[0022] The rotating handle is located at a side of the bracket away from the elastic member, and the rotating handle and the connecting shaft are in transmission cooperation to drive the pressing block to move along the thickness direction of the bracket.

[0023] Optionally, the end plate assembly of the battery module welding tooling includes two clamping mechanisms, and a plurality of connection holes are provided on the bracket;

[0024] Each clamping mechanism can be moved to a different position on the bracket to adjust the distance between the two clamping mechanisms. The clamping mechanisms are fixed to the corresponding connecting holes by fasteners.

[0025] Optionally, the end plate assembly of the battery module welding tooling includes a slide rail;

[0026] The bracket is slidably connected to the slide rail.

[0027] By adopting the above technical solution, the present application has the following beneficial effects:

[0028] The end plate assembly of the battery module welding tooling of the present application is provided with an air inlet nozzle, a channel and an air outlet on the clamping block. The air inlet nozzle is connected to the air outlet through the channel. A blowing device is connected to the air inlet nozzle. The protective gas blown out from the blowing device enters the channel from the air inlet nozzle, and then goes out from the air outlet and blows to the weld, thereby realizing a close-range blowing operation of the weld, with a very good blowing effect and good welding quality.

[0029] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0031] Figure 1 It is a structural schematic diagram of a battery module of the prior art;

[0032] Figure 2 A schematic diagram of the structure of the end plate assembly of the battery module welding tooling provided in the embodiment of the present application cooperating with the battery module;

[0033] Figure 3 A first perspective view of an end plate assembly of a battery module welding tool provided in an embodiment of the present application;

[0034] Figure 4The second perspective view of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application;

[0035] Figure 5 The third perspective view of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application;

[0036] Figure 6 The structural schematic diagram of the pressing block of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application;

[0037] Figure 7 The structural schematic diagram of the main block body of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application;

[0038] Figure 8 The structural schematic diagram of the plate body of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application;

[0039] Figure 9 The structural schematic diagram of the dust collection cover of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application;

[0040] Figure 10 The sectional view of the partial structure of the end plate assembly of the battery module welding tooling provided by the embodiment of the present application.

[0041] In the figure: bracket 1, welding avoidance seam 11, guide post 12, slider 13, pressing mechanism 2, pressing block 21, air inlet nozzle 211, air outlet 212, main block body 213, second inclined surface 2131, plate body 214, connecting edge 2141, mouth forming edge 2142, first inclined surface 2142a, air duct block 215, dust collection cover 216, wide mouth end 2161, narrow mouth end 2162, operating component 22, connecting shaft 221, rotating handle 222, battery module 3, end plate 31, side plate 32, main board 321, bent plate 322, battery cell group 33, elastic member 4, slide rail 5.

[0042] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0044] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0045] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] See Figures 1 to 10 As shown, an end plate assembly of a battery module welding tooling provided by an embodiment of the present application includes: a bracket 1 and a pressing mechanism 2. The bracket 1 has a through welding avoidance seam 11. The pressing mechanism 2 is arranged on the bracket 1. The pressing mechanism 2 includes a pressing block 21 and an operating component 22. The operating component 22 is in transmission connection with the pressing block 21 and is used to drive the pressing block 21 to move in a direction perpendicular to the bracket 1. The pressing block 21 is used to abut against the battery module. The pressing block 21 has an air inlet nozzle 211, a channel, and an air outlet 212. The air inlet nozzle 211 is communicated with the air outlet 212 through the channel. The pressing block 21 presses against a bent plate 322 on the side plate 32 of the battery module, so that the bent plate 322 and the end plate 31 of the battery module are closely attached, making the position of the weld seam stable and facilitating welding. The end plate assembly of the battery module welding tooling of the present application is provided with an air inlet nozzle 211, a channel, and an air outlet 212 on the pressing block 21. The air inlet nozzle 211 is communicated with the air outlet 212 through the channel. A blowing device is connected to the air inlet nozzle 211. The protective gas blown out from the blowing device enters the channel from the air inlet nozzle 211, and then exits from the air outlet 212 and blows to the weld seam, realizing the close-range blowing operation of the weld seam, with good blowing effect and good welding quality.

[0047] As Figure 4 、 Figure 6 and Figure 10As shown, the pressing block 21 has a main block body 213 and a plate body 214. The main block body 213 and the plate body 214 are detachably connected. The channel includes an inner cavity formed between the main block body 213 and the plate body 214. An air outlet 212 is formed between the main block body 213 and the plate body 214. The air outlet 212 communicates with the inner cavity, and the air inlet nozzle 211 communicates with the inner cavity. The protective gas enters the channel from the air inlet nozzle 211, then exits from the air outlet 212 and blows onto the weld, forming an air flow channel, which facilitates the protective gas to blow onto the weld. The protective gas can be nitrogen, which is used to protect the welding area during laser welding, making the welding area have good aesthetics.

[0048] The air outlet 212 is a long slit, and the air outlet 212 extends along the length direction of the pressing block 21. The weld is long strip-shaped, and the air outlet 212 faces the weld, so that the protective gas blown out from the air outlet 212 just blows onto the weld, with high adaptability.

[0049] In a possible implementation, as Figure 6 、 Figure 8 and Figure 10 shown, the plate body 214 has a connecting edge 2141 and an orifice forming edge 2142. The connecting edge 2141 and the main block body 213 are in sealed cooperation, and the air outlet 212 is formed between the orifice forming edge 2142 and the main block body 213. A sealing ring can be arranged between the connecting edge 2141 and the main block body 213 for sealing, ensuring that the gas will not flow out from this place, and ensuring that the gas can only flow out from the air outlet 212.

[0050] As Figure 7 、 Figure 8 and Figure 10 shown, the plate body 214 is provided with a first inclined surface 2142a on one side of the orifice forming edge 2142, and the edge of the main block body 213 is provided with a second inclined surface 2131. The first inclined surface 2142a and the second inclined surface 2131 are opposite in position, and an inclined air outlet 212 is formed between the first inclined surface 2142a and the second inclined surface 2131. The protective gas enters the channel from the air inlet nozzle 211 and uniformly blows out from the long-slit air outlet 212. The first inclined surface 2142a can form an angle of 45 degrees with the plane where the plate body 214 is located, and the second inclined surface 2131 is parallel to the first inclined surface 2142a, so that the protective gas blown out from the air outlet 212 blows straight onto the weld at an angle of 45 degrees, forming a protective effect around the weld, and the welding aesthetics is better.

[0051] In a possible implementation, as Figure 3 、 Figure 4 and Figure 6As shown, the pressing block 21 includes an air duct block 215. The air duct block 215 is connected to a side of the main block 213 away from the plate body 214, and a dust removal air duct is formed between the air duct block 215 and the main block 213. Smoke or particles are generated during laser welding, and dust removal operations need to be carried out during welding. In the prior art, the dust removal device is generally integrated with the laser, so that the dust removal device is far away from the weld, the dust removal effect is poor, and large spatter is likely to occur. In the battery module welding tooling of the present application, a dust removal air duct is formed between the air duct block 215 and the main block 213 of the end plate assembly, and the dust removal air duct is very close to the weld, and the effect of absorbing the smoke or particles generated by laser welding is good.

[0052] As Figures 2 to 4 shown, the pressing block 21 includes a dust collection hood 216. The pressing block 21 has a first side port and a second side port communicating with the dust removal air duct. The dust collection hood 216 is connected to the pressing block 21, and the dust collection hood 216 covers the first side port. As Figure 6 and Figure 9 shown, the dust collection hood 216 includes a wide mouth end 2161 and a narrow mouth end 2162. The wide mouth end 2161 covers the first side port, and the narrow mouth end 2162 is connected to a negative pressure device. When laser welding the weld, the smoke and particles generated by laser welding enter the dust removal air duct through the second side port and then enter the dust collection hood 216 through the first side port.

[0053] In a possible implementation, as Figure 3 、 Figure 4 and Figure 5As shown, the end plate assembly of the battery module welding tooling includes an elastic member 4, and the elastic member 4 is arranged between the bracket 1 and the clamping block 21. The operating assembly 22 includes a connecting shaft 221 and a rotating handle 222, and the connecting shaft 221 passes through the bracket 1, and the connecting shaft 221 is connected to the clamping block 21. The rotating handle 222 is located on the side of the bracket 1 away from the elastic member 4, and the rotating handle 222 and the connecting shaft 221 are in transmission cooperation to drive the clamping block 21 to move along the thickness direction of the bracket 1. A plurality of guide posts 12 are arranged on the bracket 1, and the clamping block 21 has a guide groove, one end of the guide post 12 is connected to the bracket 1, and the other end partially extends into the guide groove, and the elastic member 4 can be a spring, and the spring is sleeved on the guide post 12, and one end of the elastic member 4 abuts against the bracket 1, and the other end abuts against the clamping block 21. When performing welding operations, first place the end plate assembly of the battery module welding tooling of the present application on the outside of the end plate 31 of the battery module, rotate the rotating handle 222 to move the clamping block 21 away from the end plate 31 of the battery module, so that there is a certain gap between the clamping block and the end plate 31 of the battery module, and then extend the bending plate 322 on the side plate 32 of the battery module into the gap, and finally rotate the rotating handle 222 to press the bending plate 322 so that the bending plate 322 fits tightly against the end plate 31, thereby maintaining the stability of the weld and facilitating welding.

[0054] The end plate assembly of the battery module welding tooling includes two clamping mechanisms 2, and a plurality of connection holes (not shown) are provided on the bracket 1. Each clamping mechanism 2 can be moved to a different position on the bracket 1 to adjust the distance between the two clamping mechanisms 2, and the clamping mechanism 2 is fixed to the corresponding connection hole by a fastener. Due to the different sizes of battery modules, the distance between the two clamping mechanisms 2 can be adjusted by connecting the clamping mechanism 2 to different connection holes to adapt to battery modules of different widths, so that the end plate assembly of the battery module welding tooling of the present application is more adaptable.

[0055] In a possible implementation, the end plate assembly of the battery module welding tooling includes a slide rail 5, and the bracket 1 is slidably connected to the slide rail 5. The slide rail 5 extends in a direction perpendicular to the bracket 1, and the bracket 1 has a slider 13, and a slide groove is provided on the slider 13, and the slide groove is slidably connected to the slide rail 5, so that the bracket 1 can slide along the extension direction of the slide rail 5, and the bracket 1 slides along the slide rail 5, and the position of the bracket 1 can be adjusted to adapt to battery modules of different lengths.

[0056] The above are only the preferred embodiments of the present utility model and do not impose any formal restrictions on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications using the technical content prompted above to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An end plate assembly of a welding tooling for a battery module, characterized in that, include: A bracket, wherein the bracket has a through-going welding avoidance seam; A clamping mechanism is arranged on the bracket, and the clamping mechanism includes a clamping block and an operating component. The operating component is transmission-connected to the clamping block and is used to drive the clamping block to move in a direction perpendicular to the bracket. The clamping block is used to abut against the battery module. The clamping block has an air inlet nozzle, a channel and an air outlet, and the air inlet nozzle is connected to the air outlet through the channel.

2. The end plate assembly of the battery module welding tooling according to claim 1, characterized in that, The pressing block comprises a main block body and a plate body; The main block and the plate are detachably connected, the channel comprises an inner cavity formed between the main block and the plate, the air outlet is formed between the main block and the plate, the air outlet is connected to the inner cavity, and the air inlet is connected to the inner cavity.

3. The end plate assembly of the battery module welding tooling according to claim 2, wherein, The air outlet is a long slit, and the air outlet extends along the length direction of the pressing block.

4. The end plate assembly of the battery module welding tooling according to claim 3, characterized in that, The plate body has a connecting edge and an opening forming edge, the connecting edge is sealed with the main block body, and the air outlet is formed between the opening forming edge and the main block body.

5. The end plate assembly of the battery module welding tooling according to claim 4, characterized in that, The plate body is provided with a first inclined surface on one side of the mouth forming edge, and the main block body is provided with a second inclined surface on its edge; The first inclined surface and the second inclined surface are located opposite to each other, and an inclined air outlet is formed between the first inclined surface and the second inclined surface.

6. The end plate assembly of the battery module welding tooling according to claim 2, wherein The compression block includes an air duct block; The air duct block is connected to a side of the main block away from the plate body, and a dust removal air duct is formed between the air duct block and the main block.

7. The end plate assembly of the battery module welding tooling according to claim 6, characterized in that, The pressing block comprises a dust collecting cover, and the pressing block has a first side port and a second side port connected to the dust removal air duct; The dust collecting hood is connected to the pressing block, and the dust collecting hood covers the first side port.

8. The end plate assembly of the battery module welding tooling according to claim 1, wherein comprising an elastic member, wherein the elastic member is arranged between the bracket and the pressing block; The operating assembly includes a connecting shaft and a rotating handle, wherein the connecting shaft passes through the bracket and is connected to the pressing block; The rotating handle is located at a side of the bracket away from the elastic member, and the rotating handle and the connecting shaft are in transmission cooperation to drive the pressing block to move along the thickness direction of the bracket.

9. The end plate assembly of the battery module welding tooling according to claim 1, characterized in that, It comprises two clamping mechanisms, and a plurality of connecting holes are arranged on the bracket; Each clamping mechanism can be moved to a different position on the bracket to adjust the distance between the two clamping mechanisms. The clamping mechanisms are fixed to the corresponding connecting holes by fasteners.

10. The end plate assembly of the battery module welding tooling according to claim 1, characterized in that, Including slide rails; The bracket is slidably connected to the slide rail.

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