Repair welding limiting tool

Abstract

The utility model relates to the technical field of battery welding tools, and particularly discloses a repair welding limiting tool which comprises a limiting structure, a clamping structure and a connecting piece, the limiting structure and the clamping structure are arranged in a spaced mode and extend in the same direction, and an avoiding gap is formed between the limiting structure and the clamping structure; the connecting piece is connected with the ends, close to each other, of the limiting structure and the clamping structure, the clamping structure is provided with a clamping groove extending from the end, away from the connecting piece, of the clamping structure to the connecting piece, the limiting structure is provided with a limiting groove right opposite to the clamping groove, and the clamping groove is configured to be connected with the pole in a clamped mode. The limiting groove is configured to limit the welding allowance of the pole. When the repair welding limiting tool is used for conducting repair welding on the busbar and the pole, the clamping groove is connected with the pole in a clamped mode, the limiting groove corresponds to the upper end of the pole, and the repair welding allowance of the pole and the specific position of the repair welding allowance can be accurately determined through the size and the position of the limiting groove. Therefore, the risk of scrapping caused by welding deviation during repair welding of the busbar and the pole is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery welding tooling, in particular to a repair welding limiting tool. BACKGROUND

[0002] In the production process of a power battery module, the welding quality of a bus bar and a cell pole directly affects the performance and reliability of the power battery module.

[0003] The current repair welding technology uses structured light to scan the welding defective area to model and repair welding. Specifically, the structured light is used to scan the welding defective area in the welding seam where welding defects exist, surface profile data is collected, and modeling is performed to fill the layers for repair welding. However, this type of repair welding technology is applicable to normal welding defects, but for the hole blasting caused by foreign matter in the welding part, the repairable welding allowance of the pole cannot be accurately obtained, thereby causing a great risk of welding deviation and scrap during repair welding. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, it is necessary to provide a repair welding limiting tool to reduce the risk of welding deviation and scrap during repair welding of the bus bar and the pole.

[0005] The application provides a repair welding limiting tool, which comprises a limiting structure, a clamping structure and a connecting piece. The limiting structure and the clamping structure are arranged in parallel and extend in the same direction. The limiting structure and the clamping structure have an avoiding gap for avoiding the bus bar. The connecting piece is connected to one end of the limiting structure and the clamping structure, respectively. The clamping structure is provided with a clamping groove extending from one end of the clamping structure away from the connecting piece to the connecting piece. The limiting structure is provided with a limiting groove arranged opposite to the clamping groove. The clamping groove is configured to clamp the pole. The limiting groove is configured to limit the welding allowance of the pole.

[0006] In some embodiments, the limiting structure and the clamping structure are parallel, and the length of the limiting structure is greater than the length of the clamping structure.

[0007] In some embodiments, the limiting structure comprises a first limiting piece and a second limiting piece. The first limiting piece and the second limiting piece are parallel, and the arrangement direction of the first limiting piece and the second limiting piece is parallel to the clamping structure. One end of the first limiting piece and the second limiting piece, which are close to each other, is connected to the connecting piece. The limiting groove is formed by the first limiting piece, the second limiting piece and the connecting piece.

[0008] In some embodiments, the length of the first limiting piece and the second limiting piece is the same, and the length of the first limiting piece and the second limiting piece ranges from 50 mm to 60 mm.

[0009] In some embodiments, the distance between the first limiting member and the second limiting member ranges from 10 mm to 13 mm.

[0010] In some embodiments, the clamping structure comprises a first clamping member and a second clamping member, the first clamping member and the second clamping member are parallel, and the arrangement direction of the first clamping member and the second clamping member is parallel to the limiting structure, the first clamping member and the second clamping member are connected at one end close to each other, and the clamping groove is formed by the first clamping member, the second clamping member and the connecting member.

[0011] In some embodiments, the first clamping member and the second clamping member have the same length, and the length of the first clamping member and the second clamping member ranges from 20 mm to 30 mm.

[0012] In some embodiments, the distance between the first clamping member and the second clamping member ranges from 11 mm to 14 mm.

[0013] In some embodiments, the width of the avoiding gap along the arrangement direction of the limiting structure and the clamping structure ranges from 1.3 mm to 1.8 mm.

[0014] In some embodiments, the limiting structure, the clamping structure and the connecting member are integrally formed.

[0015] The supplementary welding limiting tool provided by the embodiments of the present application comprises a limiting structure, a clamping structure and a connecting member, the clamping structure is provided with a clamping groove, the limiting structure is provided with a limiting groove, and an avoiding gap is arranged between the limiting structure and the clamping structure. When the supplementary welding limiting tool is used to perform supplementary welding on the busbar and the pole, the clamping groove is clamped with the pole, the limiting groove corresponds to the upper end of the pole, the busbar passes through the avoiding gap, the size and position of the limiting groove can accurately determine the supplementary weldable amount of the pole and the specific position of the supplementary weldable amount, thereby reducing the risk of welding deviation and scrapping when the busbar and the pole are welded. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the supplementary welding limiting tool provided by the embodiments of the present application.

[0017] Figure 2 is a schematic diagram of the supplementary welding limiting tool provided by the embodiments of the present application. Figure 1 is a bottom view of the supplementary welding limiting tool.

[0018] Figure 3 is a schematic diagram of the supplementary welding limiting tool cooperating with the power battery module. Figure 1

[0019] ​Main element symbol explanation: repair welding limiting tool 100, limiting structure 10, first limiting piece 11, second limiting piece 12, limiting groove 13, clamping structure 20, first clamping piece 21, second clamping piece 22, clamping groove 23, connecting piece 30, avoiding gap 40, power battery module 200, cell main body 210, pole 220, busbar 230. DETAILED DESCRIPTION

[0020] Embodiments of the present application will be described in detail below with reference to drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0021] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, it should be noted that the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0022] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection or can communicate with each other, it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0023] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] Please refer to Figure 1 and Figure 3 The embodiments of the present application provide a repair welding limiting tool 100 for limiting when repairing and welding the pole 220 and the busbar 230 of the power battery module 200. Among them, the power battery module 200 can be applied to electric vehicles, electric bicycles and the like, in order to facilitate understanding, the embodiments of the present application take the power battery module 200 applied to electric vehicles as an example for description; in addition,Figure 3 The power battery module 200 in the figure only shows part of the structure associated with the repair welding limiting tool 100 in the embodiments of the present application, Figure 3 The structure of the power battery module 200 in the figure does not constitute a limitation on the embodiments of the present application.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 In the embodiments, the repair welding limiting tool 100 includes a limiting structure 10, a clamping structure 20, and a connecting piece 30. The limiting structure 10 and the clamping structure 20 are arranged at intervals and extend in the same direction, and have an avoiding gap 40 for avoiding the busbar 230 between the limiting structure 10 and the clamping structure 20. The connecting piece 30 is connected to the ends of the limiting structure 10 and the clamping structure 20 that are close to each other. The clamping structure 20 is provided with a clamping groove 23 extending from the end of the clamping structure 20 away from the connecting piece 30 towards the connecting piece 30. The limiting structure 10 is provided with a limiting groove 13 arranged opposite to the clamping groove 23. The clamping groove 23 is configured to clamp the pole 220, and the limiting groove 13 is configured to limit the welding allowance of the pole 220.

[0026] When the repair welding limiting tool 100 is used to repair weld the busbar 230 and the pole 220, the clamping structure 20 is clamped into the position of the pole 220 provided with an upper plastic (not shown in the figure), so that the clamping groove 23 clamps the pole 220. At this time, the limiting groove 13 corresponds to the upper end of the pole 220, and the busbar 230 passes through the avoiding gap 40. The size and position of the limiting groove 13 can accurately determine the repair welding allowance of the pole 220 and the specific position of the repair welding allowance, thereby reducing the risk of scrapping due to welding deviation when the busbar 230 and the pole 220 are repair welded.

[0027] In the embodiments, the limiting structure 10 is parallel to the clamping structure 20, and the length of the limiting structure 10 is greater than the length of the clamping structure 20.

[0028] By setting the limiting structure 10 parallel to the clamping structure 20, the limiting structure 10 is in a horizontal stable state after the clamping structure 20 is clamped with the pole column 220, thereby improving the accuracy of the available welding allowance of the pole column 220 obtained through the limiting groove 13 and the specific position of the available welding allowance, and further reducing the risk of welding deviation and scrapping when the bus bar 230 and the pole column 220 are welded. In addition, since the gap between the bus bar 230 and the battery main body 210 is small, and the welding points of the pole column 220 and the bus bar 230 are multiple, by setting the length of the limiting structure 10 greater than the length of the clamping structure 20, the clamping structure 20 is quickly inserted into the gap between the bus bar 230 and the battery main body 210 and clamped with the pole column 220, and the available welding allowance of multiple welding points is determined through the limiting groove 13 at the same time, thereby improving the efficiency of the welding of the bus bar 230 and the pole column 220 by using the welding limiting tool 100.

[0029] In the embodiment, the limiting structure 10 includes a first limiting piece 11 and a second limiting piece 12, the first limiting piece 11 and the second limiting piece 12 are parallel, and the arrangement direction of the first limiting piece 11 and the second limiting piece 12 is parallel to the clamping structure 20, the first limiting piece 11 and the second limiting piece 12 are connected with the connecting piece 30 at the end close to each other, and the limiting groove 13 is formed by the first limiting piece 11, the second limiting piece 12 and the connecting piece 30.

[0030] In this way, the limiting structure 10 has a simple structure and low cost, and the length of the limiting groove 13 is longer, which is convenient for determining the available welding allowance of multiple welding points at the same time.

[0031] In the embodiment, the length of the first limiting piece 11 and the second limiting piece 12 is the same, and the length of the first limiting piece 11 and the second limiting piece 12 ranges from 50mm to 60mm.

[0032] Specifically, the length of the first limiting piece 11 and the second limiting piece 12 is d1, and the value range of d1 is 50mm-60mm. In this way, the length of the limiting groove 13 is longer, which is convenient for determining the available welding allowance of multiple welding points at the same time.

[0033] In the embodiment, the distance between the first limiting piece 11 and the second limiting piece 12 ranges from 10mm to 13mm.

[0034] Specifically, the distance between the first limiting piece 11 and the second limiting piece 12 is d2, and the value range of d2 is 10mm-13mm. Since the width of the pole column 220 is within this range, by setting the value range of d1 within this range, the gap between the groove wall of the limiting groove 13 and the pole column 220 is moderate, thereby improving the accuracy of determining the available welding allowance, and further reducing the risk of welding deviation and scrapping when the bus bar 230 and the pole column 220 are welded.

[0035] In an embodiment, d2 is 11.3 mm. When d2 is 11.3 mm, the gap between the slot wall of the limiting slot 13 and the pole column 220 is small, and the pole column 220 is easily moved into the limiting slot 13, thereby improving the accuracy of determining the repairable welding allowance, and further reducing the risk of welding deviation during repair welding of the bus bar 230 and the pole column 220.

[0036] In other embodiments, d2 can also be 10 mm, 11 mm, 12 mm, or 13 mm, which is not limited in the embodiments of the application.

[0037] In the embodiment, the first limiting member 11 and the second limiting member 12 are both columnar, and the cross-sectional shape of the first limiting member 11 and the second limiting member 12 is rectangular. In this way, the opposite two slot walls of the limiting slot 13 are parallel to each other, thereby improving the accuracy of determining the repairable welding allowance, and further reducing the risk of welding deviation during repair welding of the bus bar 230 and the pole column 220.

[0038] In the embodiment, the length and width of the cross section of the first limiting member 11 and the second limiting member 12 are d3 and d4, respectively, and the value range of d3 and d4 can be 2 mm-4 mm. In this way, the structural strength of the first limiting member 11 and the second limiting member 12 is ensured, and the width of the slot wall of the limiting slot 13 is within an appropriate range, thereby improving the accuracy of determining the repairable welding allowance.

[0039] In an embodiment, d3 and d4 can both be 3 mm. In this way, the structural strength of the first limiting member 11 and the second limiting member 12 is ensured, and the width of the slot wall of the limiting slot 13 is more suitable for the repair welding thickness, thereby improving the accuracy of determining the repairable welding allowance.

[0040] In other embodiments, d3 and d4 can also be 2 mm, 2.5 mm, 3.5 mm, or 4 mm, which is not limited in the embodiments of the application.

[0041] In the embodiment, the clamping structure 20 includes a first clamping member 21 and a second clamping member 22, the first clamping member 21 and the second clamping member 22 are parallel, and the arrangement direction of the first clamping member 21 and the second clamping member 22 is parallel to the limiting structure 10, one end of the first clamping member 21 and the second clamping member 22 close to each other is connected with the connecting member 30, and the clamping slot 23 is formed by the first clamping member 21, the second clamping member 22, and the connecting member 30.

[0042] When the clamping structure 20 is clamped with the pole column 220, the first clamping part 21 and the second clamping part 22 are respectively located on both sides of the pole column 220 and abut against the pole column 220, thereby improving the convenience and stability of clamping the clamping structure 20 with the pole column 220. In addition, by setting the clamping structure 20 to include the first clamping part 21 and the second clamping part 22, the structure is simple and the cost is low.

[0043] In the embodiment, the first clamping part 21 and the second clamping part 22 have the same length, and the length of the first clamping part 21 and the second clamping part 22 ranges from 20 mm to 30 mm.

[0044] Specifically, the length of the first clamping part 21 and the second clamping part 22 is d5, and the value of d5 ranges from 20 mm to 30 mm.

[0045] Since the gap between the busbar 230 and the battery cell body 210 is small, by setting the value of d5 to range from 20 mm to 30 mm, the first clamping part 21 and the second clamping part 22 are facilitated to be quickly inserted into the gap between the busbar 230 and the battery cell body 210. In addition, since the length of the first clamping part 21 and the second clamping part 22 is shorter than the length of the first limiting part 11 and the second limiting part 12, the material cost of the clamping structure 20 is reduced.

[0046] In the embodiment, the distance between the first clamping part 21 and the second clamping part 22 ranges from 11 mm to 14 mm.

[0047] Specifically, the distance between the first clamping part 21 and the second clamping part 22 is d6, and the value of d6 ranges from 11 mm to 14 mm. When setting the value range of d6, the width dimension of the pole column 220 and the width dimension of the upper plastic on the pole column 220 are comprehensively considered, so that the clamping groove 23 is more firmly clamped with the pole column 220, and the limiting groove 13 is more accurately corresponding to the pole column 220, thereby improving the accuracy of determining the weldable allowance by the limiting groove 13.

[0048] In the embodiment, the value of d6 is greater than the value of d2. Since the clamping structure 20 is clamped from the position of the upper plastic on the pole column 220, the width dimension of the pole column 220 and the width dimension of the upper plastic on the pole column 220 are comprehensively considered, so that the clamping groove 23 is more firmly clamped with the pole column 220.

[0049] In an embodiment, the value of d6 is 12.6 mm. By setting d6 to this value, the clamping groove 23 is more firmly clamped with the pole column 220, and the limiting groove 13 is more accurately corresponding to the pole column 220, thereby improving the accuracy of determining the weldable allowance by the limiting groove 13.

[0050] In some other embodiments, the value of d6 can also be 11 mm, 12 mm, 13 mm or 14 mm, which are not limited in the embodiments of the present application.

[0051] In the embodiment, the first clamping part 21 and the second clamping part 22 are both columnar, and the cross section of the first clamping part 21 and the second clamping part 22 is rectangular. In this way, the contact area of the clamping groove 23 and the pole column 220 is larger, thereby improving the firmness of the clamping of the clamping groove 23 and the pole column 220.

[0052] In the embodiment, the size of the cross section of the first clamping part 21 and the second clamping part 22 is smaller than the size of the cross section of the first limiting part 11 and the second limiting part 12, thereby making the first clamping part 21 and the second clamping part 22 more easily inserted into the gap between the bus bar 230 and the battery cell main body 210.

[0053] In the embodiment, the width of the avoidance gap 40 along the arrangement direction of the limiting structure 10 and the clamping structure 20 ranges from 1.3 mm to 1.8 mm.

[0054] Specifically, the width of the avoidance gap 40 along the arrangement direction of the limiting structure 10 and the clamping structure 20 is d7, and the value of d7 ranges from 1.3 mm to 1.8 mm. Since the thickness of the bus bar 230 is in the range, by setting the value range of d7 to be the range, the avoidance gap 40 is facilitated to avoid the bus bar 230, and the distance of the movement of the limiting gap 13 along the extension direction of the pole column 220 is reduced, thereby improving the accuracy of determining the weldable allowance by the limiting gap 13.

[0055] In an embodiment, the value of d7 is 1.5 mm. By setting the value of d7 to be the value, the avoidance gap 40 is facilitated to avoid the bus bar 230, and the distance of the movement of the limiting structure 10 along the extension direction of the pole column 220 is reduced, thereby improving the accuracy of determining the weldable allowance by the limiting gap 13.

[0056] In some other embodiments, the value of d7 can also be 1.3 mm, 1.4 mm, 1.6 mm, 1.7 mm or 1.8 mm, which are not limited in the embodiments of the present application.

[0057] In the embodiment, the connecting part 30 is plate-shaped, and the first limiting part 11, the second limiting part 12, the first clamping part 21 and the second clamping part 22 are all connected to the connecting part 30 perpendicularly. In this way, the structure of the connecting part 30 is simple, and it is facilitated to form the limiting gap 13 with the first limiting part 11 and the second limiting part 12, and to form the clamping groove 23 with the first clamping part 21 and the second clamping part 22.

[0058] In some other embodiments, the connecting piece 30 can also be in other shapes, such as spherical, irregular, etc., which are not specifically limited in the embodiments of the present application.

[0059] In the embodiments, the limiting structure 10, the clamping structure 20 and the connecting piece 30 are integrally formed. In this way, the structural strength and service life of the repair welding limiting tool 100 are improved.

[0060] In the embodiments, the specific process of using the repair welding limiting tool 100 to repair weld the busbar 230 and the pole 220 is as follows: the first clamping piece 21 and the second clamping piece 22 are inserted into the gap between the busbar 230 and the main body 210 of the battery cell, and the clamping groove 23 is clamped with the position of the pole 220 provided with the upper plastic, the repair welding limiting tool 100 is kept in a horizontal stable state, at this time, the limiting groove 13 corresponds to the upper end of the pole 220, the busbar 230 is perpendicular to the repair welding limiting tool 100 and passes through the avoiding gap 40; then the repairable welding allowance of the pole 220 and the specific position of the repairable welding allowance are obtained through the size and position of the limiting groove 13; then the repair welding position is confirmed according to the actual repair welding offset and red light positioning is performed; then the low-power welding laser is used for pre-melting welding according to the repair welding position; finally, the high-power welding laser is used for formal welding after ensuring that the repair welding position is correct.

[0061] In summary, the repair welding limiting tool 100 of the embodiments of the present application sets the limiting structure 10, the clamping structure 20 and the connecting piece 30, opens the clamping groove 23 in the clamping structure 20, opens the limiting groove 13 on the limiting structure 10, and sets the avoiding gap 40 between the limiting structure 10 and the clamping structure 20. When the repair welding limiting tool 100 is used to repair weld the busbar 230 and the pole 220, the clamping groove 23 is clamped with the pole 220, the limiting groove 13 corresponds to the upper end of the pole 220, and the busbar 230 passes through the avoiding gap 40. The repairable welding allowance of the pole 220 and the specific position of the repairable welding allowance can be accurately determined through the size and position of the limiting groove 13, thereby reducing the risk of welding offset rejection when the busbar 230 and the pole 220 are repair welded.

[0062] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application.

[0063] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A repair limiting tooling, characterized by, The application relates to a limiting structure, a clamping structure and a connecting piece, wherein the limiting structure and the clamping structure are arranged in parallel and extend in the same direction, the limiting structure and the clamping structure are provided with an avoiding gap for avoiding busbars, the connecting piece is connected to one end of the limiting structure and the clamping structure, the clamping structure is provided with a clamping groove extending from the end of the clamping structure away from the connecting piece to the connecting piece, the limiting structure is provided with a limiting groove arranged opposite to the clamping groove, the clamping groove is configured to clamp a pole, and the limiting groove is configured to limit the welding allowance of the pole. The limiting structure and the clamping structure are parallel, and the length of the limiting structure is greater than the length of the clamping structure.

2. The repair stopper tool according to claim 1, wherein The limiting structure comprises a first limiting piece and a second limiting piece, the first limiting piece and the second limiting piece are parallel, the arrangement direction of the first limiting piece and the second limiting piece is parallel to the clamping structure, one end of the first limiting piece and the second limiting piece close to each other is connected to the connecting piece, and the limiting groove is formed by the first limiting piece, the second limiting piece and the connecting piece.

3. The repair stopper tool of claim 1, wherein The length of the first limiting piece and the second limiting piece is the same, and the length of the first limiting piece and the second limiting piece ranges from 50 mm to 60 mm.

4. The repair stopper tool according to claim 3, wherein The distance between the first limiting piece and the second limiting piece ranges from 10 mm to 13 mm.

5. The repair stopper tool according to claim 3, wherein The clamping structure comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are parallel, the arrangement direction of the first clamping piece and the second clamping piece is parallel to the limiting structure, one end of the first clamping piece and the second clamping piece close to each other is connected to the connecting piece, and the clamping groove is formed by the first clamping piece, the second clamping piece and the connecting piece.

6. The repair stopper tool of claim 1, wherein The length of the first clamping piece and the second clamping piece is the same, and the length of the first clamping piece and the second clamping piece ranges from 20 mm to 30 mm.

7. The repair stopper tool according to claim 6, wherein The distance between the first clamping piece and the second clamping piece ranges from 11 mm to 14 mm.

8. The repair stopper tool according to claim 6, wherein The width of the avoiding gap along the arrangement direction of the limiting structure and the clamping structure ranges from 1.3 mm to 1.8 mm.

9. The repair stopper tool according to any one of claims 1 to 8, wherein The limiting structure, the clamping structure and the connecting piece are integrally formed.

10. The repair limiting fixture of any one of claims 1-8, wherein, ​

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