Clamp for battery welding

Abstract

The utility model provides a clamp for battery welding. The clamp comprises a top plate; the positioning mechanism is arranged opposite to the top plate, and the positioning mechanism is used for fixing a battery shell; the first substrate is fixedly mounted on the top plate and is arranged close to one side of the first large surface of the battery shell; the second base plate is adjustably mounted on the top plate and is arranged close to one side of the first large surface of the battery shell; the first pressing plate is adjustably mounted on the top plate and is arranged close to one side of the second large surface of the battery shell, and the first pressing plate corresponds to the first substrate and is arranged close to the end part of the top cover in the length direction; and the second pressing plate is adjustably mounted on the top plate and is arranged close to one side of the second large surface of the battery shell, and the second pressing plate corresponds to the second substrate and is arranged close to the middle of the top cover in the length direction. The welding quality of the battery shell can be guaranteed, and the sealing performance of the battery shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery welding clamp. Background Art

[0002] like Figure 4 As shown, the battery case is assembled by a bottom shell and a top cover, which are specifically welded together. The side wall of the bottom shell in contact with the side edge in the length direction of the top cover is long, and the bottom shell is mostly a thin-walled part. Therefore, after the bottom shell and the top cover are assembled, the side wall is deformed due to insufficient rigidity or other factors, resulting in an excessively large or uneven gap between the side edge in the length direction of the top cover, which affects the welding quality of the top cover and the bottom shell, and further affects the sealing of the battery case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a battery welding fixture, which can ensure the welding quality of the battery shell and improve the sealing of the battery shell.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A battery welding fixture comprises: a top plate; a positioning mechanism, arranged opposite to the top plate, the positioning mechanism being used to fix a battery shell; a first substrate, fixedly mounted on the top plate and arranged close to a first large surface of the battery shell; a second substrate, adjustably mounted on the top plate and arranged close to the first large surface of the battery shell; a first pressing plate, adjustably mounted on the top plate and arranged close to a second large surface of the battery shell, the first pressing plate corresponding to the first substrate and arranged close to an end portion of a top cover in a length direction; a second pressing plate, adjustably mounted on the top plate and arranged close to a second large surface of the battery shell, the second pressing plate corresponding to the second substrate and arranged close to a middle portion of the top cover in a length direction.

[0006] According to a preferred embodiment, the first pressing plate, the second pressing plate and the second base plate are all slidably connected to the top plate; the first pressing plate, the second pressing plate and the second base plate are all able to approach or move away from the battery housing.

[0007] According to a preferred embodiment, the top plate is penetrated by a first mounting hole and a second mounting hole, wherein: a first stopper is provided on the first pressure plate, the first stopper passes through the first mounting hole, a first telescopic member is provided on a side surface of the top plate away from the positioning mechanism, and the telescopic end of the first telescopic member is connected to the first stopper; a second stopper is provided on the second pressure plate, the second stopper passes through the second mounting hole, a second telescopic member is provided on a side surface of the top plate away from the positioning mechanism, and the telescopic end of the second telescopic member is connected to the second stopper; a third stopper is provided on the second substrate, the third stopper passes through the second mounting hole, a third telescopic member is provided on a side surface of the top plate away from the positioning mechanism, and the telescopic end of the third telescopic member is connected to the third stopper.

[0008] According to a preferred embodiment, a first limiting plate is arranged on a side surface of the top plate facing away from the positioning mechanism, and a first limiting head is arranged on the first limiting plate, and the first limiting head is arranged opposite to the first stopper.

[0009] According to a preferred embodiment, a second limit plate is provided on the side surface of the top plate facing away from the positioning mechanism, and the second limit plate is located between the second stop block and the third stop block; the second stop block and the third stop block are both provided with a second limit head corresponding to the second limit plate.

[0010] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0011] The utility model configures a first substrate and a first pressing plate at the end of the bottom shell close to the top cover in the length direction, and configures a second substrate and a second pressing plate at the middle position of the bottom shell close to the top cover in the length direction, so as to adapt to the situation that the deformation amount of the bottom shell in the length direction of the top cover is not uniform, so as to flexibly adjust the distance between the first substrate and the first pressing plate, and the distance between the second substrate and the second pressing plate according to needs to adjust the gap between the top cover and the bottom shell, thereby ensuring the welding quality of the battery shell and improving the sealing of the battery shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of a first three-dimensional structure of a battery welding fixture provided in an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the three-dimensional structure of the battery welding fixture provided by the embodiment of the utility model after the positioning mechanism is removed;

[0015] Figure 3 A second three-dimensional structural schematic diagram of the battery welding fixture provided in an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of the three-dimensional structure of a battery housing assembled with a positioning mechanism provided in an embodiment of the utility model;

[0017] Figure 5 A schematic diagram of the three-dimensional structure of the top plate provided in an embodiment of the utility model.

[0018] Icons: 1. Top plate; 10. First mounting hole; 11. Second mounting hole; 12. First limit plate; 121. First buffer head; 122. First hard limit head; 13. Second limit plate; 131. Second buffer head; 132. Second hard limit head; 2. Positioning mechanism; 3. First substrate; 4. First pressure plate; 41. First stop block; 42. First telescopic member; 5. Second pressure plate; 51. Second stop block; 52. Second telescopic member; 6. Second substrate; 61. Third stop block; 62. Third telescopic member; 7. Battery housing; 71. Bottom shell; 710. First large surface; 711. Second large surface; 72. Top cover; X. Thickness direction of the battery; Y. Length direction of the battery; Z. Height direction of the battery. DETAILED DESCRIPTION

[0019] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] Please refer to Figures 1 to 5A battery welding fixture comprises a top plate 1, a positioning mechanism 2, a first substrate 3, a second substrate 6, a first pressing plate 4 and a second pressing plate 5, wherein: the positioning mechanism 2 is arranged opposite to the top plate 1, and the positioning mechanism 2 is used to fix the battery housing 7; the first substrate 3 is fixedly mounted on the top plate 1, and is arranged on the side close to the first large surface 710 of the battery housing 7; the second substrate 6 is adjustably mounted on the top plate 1, and is arranged on the side close to the first large surface 710 of the battery housing 7; the first pressing plate 4 is adjustably mounted on the top plate 1, and is arranged on the side close to the second large surface 711 of the battery housing 7, the first pressing plate 4 corresponds to the first substrate 3, and is arranged close to the end of the top cover 72 in the length direction; the second pressing plate 5 is adjustably mounted on the top plate 1, and is arranged close to the side of the second large surface 711 of the battery housing 7, the second pressing plate 5 corresponds to the second substrate 6, and is arranged close to the middle of the top cover 72 in the length direction. In this embodiment, the rigidity of the large surface of the battery casing 7, that is, the end position of the bottom shell 71 close to the top cover 72 in the length direction is large, while the rigidity of the middle position is small. Here, the first substrate 3 and the first pressure plate 4 are arranged at the end of the bottom shell 71 close to the top cover 72 in the length direction, and the second substrate 6 and the second pressure plate 5 are arranged at the middle position of the bottom shell 71 close to the top cover 72 in the length direction. This can adapt to the situation that the deformation of the bottom shell 71 in the length direction of the top cover 72 is not uniform, so as to flexibly adjust the distance between the first substrate 3 and the first pressure plate 4, and the distance between the second substrate 6 and the second pressure plate 5 as needed to adjust the gap between the top cover 72 and the bottom shell 71, thereby ensuring the welding quality of the battery casing 7 and improving the sealing of the battery casing 7.

[0023] The first substrate 3 here is fixedly connected to the top plate 1 and serves as a reference surface, while the second substrate 6 located in the middle of the length direction of the top cover 72 adopts an adjustable assembly method to cooperate with the second pressure plate 5 to better shape and adjust the first large surface 710 of the battery shell 7, that is, the bottom shell 71.

[0024] In some embodiments, the number of the second substrate 6 and the second pressing plate 5 is at least one, that is, according to actual needs, the second substrate 6 and the second pressing plate 5 can be two or three or a combination of other numbers.

[0025] like Figure 1 and 4As shown, the positioning mechanism 2 here is used to carry the battery shell 7, and is used to limit the battery shell 7 in the length direction Y of the battery and the height direction Z of the battery; the first pressing plate 4 cooperates with the first substrate 3, and the second pressing plate 5 cooperates with the second substrate 6 to limit and shape the battery shell 7 in the thickness direction X of the battery, so as to completely limit the battery shell 7 in space, which is convenient for welding. In this embodiment, the top plate 1 is arranged opposite to the positioning mechanism 2, and the first substrate 3, the second substrate 6, the first pressing plate 4 and the second pressing plate 5 are extended along the height direction Z of the battery toward the positioning mechanism 2, which is conducive to the arrangement of welding equipment such as laser welding mechanism, and is conducive to the welding equipment to weld the side seam of the battery without interference. Preferably, the positioning mechanism 2 is quoted from a square shell power battery top cover welding fixture provided by the Chinese patent with publication number CN220575101U, which will not be repeated here.

[0026] In this embodiment, the first pressing plate 4, the second pressing plate 5 and the second base plate 6 are all slidably connected to the top plate 1; the first pressing plate 4, the second pressing plate 5 and the second base plate 6 can be close to or away from the battery housing 7. Figure 2 As shown, preferably, the top plate 1 is slidably connected to the first pressure plate 4, the second pressure plate 5 and the second base plate 6 through a slide rail and a slider structure. In this embodiment, the slide rail is installed on the top plate 1, and the slider is installed on the first pressure plate 4, the second pressure plate 5 and the second base plate 6. The slide rail is extended along the thickness direction X of the battery.

[0027] like Figure 1 and Figure 5 As shown, the top plate 1 is provided with a first mounting hole 10 and a second mounting hole 11, wherein: a first stopper 41 is provided on the first pressing plate 4, the first stopper 41 passes through the first mounting hole 10, a first telescopic member 42 is provided on the side of the top plate 1 away from the positioning mechanism 2, and the telescopic end of the first telescopic member 42 is connected to the first stopper 41; a second stopper 51 is provided on the second pressing plate 5, the second stopper 51 passes through the second mounting hole 11, a second telescopic member 52 is provided on the side of the top plate 1 away from the positioning mechanism 2, and the telescopic end of the second telescopic member 52 is connected to the second stopper 51; a third stopper 61 is provided on the second base plate 6, the third stopper 61 passes through the second mounting hole 11, a third telescopic member 62 is provided on the side of the top plate 1 away from the positioning mechanism 2, and the telescopic end of the third telescopic member 62 is connected to the third stopper 61. Optionally, the first telescopic member 42, the second telescopic member 52 and the third telescopic member 62 include but are not limited to cylinders, hydraulic cylinders or electric push rods. The stopper cooperates with the telescopic member to drive the pressure plate and the second base plate 6. Here, the telescopic member and the stopper are arranged on the side of the top plate 1 away from the positioning mechanism 2 to release the space of the top plate 1 toward the positioning mechanism 2 to avoid interference with the welding equipment.

[0028] like Figure 3As shown, a first limiting plate 12 is provided on one side of the top plate 1 away from the positioning mechanism 2, and a first limiting head is provided on the first limiting plate 12, and the first limiting head is arranged opposite to the first stopper 41. The first limiting head here is used to limit the first stopper 41, that is, to limit the first pressing plate 4, to prevent it from over-pressuring the battery housing 7.

[0029] Specifically, the first limit head includes a first buffer head 121 and a first hard limit head 122, and the first buffer head 121 is closer to the first stopper 41 than the first hard limit head 122. When in use, the first stopper 41 first contacts the first buffer head 121, and the first pressing plate 4 continues to approach the battery housing 7 to compress the first buffer head 121 and then abuts against the first hard limit head 122 to limit the limit position of the first pressing plate 4.

[0030] like Figure 3 As shown, a second limit plate 13 is provided on the side surface of the top plate 1 facing away from the positioning mechanism 2, and the second limit plate 13 is between the second stop block 51 and the third stop block 61; the second limit head corresponding to the second limit plate 13 is provided on the second stop block 51 and the third stop block 61. The second buffer head 131 here is the same as the first buffer head 121, and the second hard limit head 132 is the same as the first hard limit head 122. In this embodiment, the second stop block 51 and the third stop block 61 have the same appearance and are in the shape of a "J". The second buffer head 131 and the second hard limit head 132 are correspondingly arranged at the bottom of the second stop block 51 and the third stop block 61, the telescopic end of the second telescopic member 52 is connected to the top of the second stop block 51, and the telescopic end of the third telescopic member 62 is connected to the top of the third stop block 61.

[0031] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A battery welding fixture, characterized in that: include: Top plate (1); A positioning mechanism (2) is arranged opposite to the top plate (1), and the positioning mechanism (2) is used to fix the battery housing (7); A first substrate (3) is fixedly mounted on the top plate (1) and is disposed close to a first large surface (710) of the battery housing (7); A second substrate (6) is adjustably mounted on the top plate (1) and is disposed close to one side of the first large surface (710) of the battery housing (7); A first pressing plate (4) is adjustably mounted on the top plate (1) and is disposed close to a side of the second large surface (711) of the battery housing (7); the first pressing plate (4) corresponds to the first substrate (3) and is disposed close to an end portion of the top cover (72) in the length direction; The second pressing plate (5) is adjustably mounted on the top plate (1) and is disposed close to the second large surface (711) of the battery housing (7). The second pressing plate (5) corresponds to the second base plate (6) and is disposed close to the middle of the top cover (72) in the length direction.

2. The battery welding fixture according to claim 1, characterized in that: The first pressing plate (4), the second pressing plate (5) and the second base plate (6) are all slidably connected to the top plate (1); The first pressing plate (4), the second pressing plate (5) and the second substrate (6) can all be close to or away from the battery housing (7).

3. The battery welding fixture according to claim 2, characterized in that: The top plate (1) is provided with a first mounting hole (10) and a second mounting hole (11), wherein: A first stopper (41) is provided on the first pressing plate (4), the first stopper (41) passes through the first mounting hole (10), a first telescopic member (42) is provided on a side surface of the top plate (1) facing away from the positioning mechanism (2), and a telescopic end of the first telescopic member (42) is connected to the first stopper (41); A second stopper (51) is provided on the second pressing plate (5), the second stopper (51) passes through the second mounting hole (11), a second telescopic member (52) is provided on a side surface of the top plate (1) facing away from the positioning mechanism (2), and a telescopic end of the second telescopic member (52) is connected to the second stopper (51); A third stopper (61) is provided on the second base plate (6), and the third stopper (61) passes through the second mounting hole (11); a third telescopic member (62) is provided on a side surface of the top plate (1) facing away from the positioning mechanism (2), and a telescopic end of the third telescopic member (62) is connected to the third stopper (61).

4. The battery welding fixture according to claim 3, characterized in that: A first limiting plate (12) is arranged on a side surface of the top plate (1) facing away from the positioning mechanism (2), and a first limiting head is arranged on the first limiting plate (12), and the first limiting head is arranged opposite to the first stopper (41).

5. The battery welding fixture according to claim 3, characterized in that: A second limit plate (13) is provided on a side surface of the top plate (1) facing away from the positioning mechanism (2), and the second limit plate (13) is located between the second stop block (51) and the third stop block (61); The second stopper (51) and the third stopper (61) are both provided with a second stopper head corresponding to the second stopper plate (13).

Images