Top cover tool for first inspection welding of battery module sheet

Abstract

The utility model belongs to the field of power battery processing, and particularly relates to a top cover tool for first inspection welding of battery module chips, in specific use, the distance between a movable barrier strip and a fixed barrier strip is adjusted according to the length of a top cover of a battery cell in a battery module to be subjected to chip welding; then the distance between every two adjacent movable spacers on the fixed barrier strips is adjusted according to the width of the top covers, the top cover tool is used for replacing shells of a plurality of battery cells arranged side by side, and then the plurality of top covers are placed in a plurality of areas defined by the movable barrier strips, the fixed barrier strips and every two adjacent movable spacers one by one; the top cover tool can be matched with a plurality of top covers to replace a plurality of real battery cells arranged side by side for chip welding, meanwhile, the top cover tool can be matched with the top covers of various different sizes and can be repeatedly used, and unnecessary scrapping of the battery cells and economic losses of companies are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power battery processing, and in particular to a top cover tooling used for initial inspection welding of battery module tabs. Background Art

[0002] Busbar is a multi-layer composite structure connecting bar, also called composite busbar, which has the characteristics of easy design, low impedance, anti-interference, good reliability, space saving, simple and quick assembly, etc. The main function of busbar is to realize the electrical connection between cells, so as to form the required series and parallel relationship. On the other hand, because the busbar itself is directly connected to the cell, it can also be used as a sampling point for the cell voltage and temperature.

[0003] The welding of the battery cell is an important part of the assembly process of the power battery module line. Its quality will directly affect the stability of the battery cell series connection and the safety of the power battery. If the welding quality does not meet the standard, it may lead to a decline in battery performance and a decrease in charging and discharging efficiency. In serious cases, it may also cause safety problems. Therefore, it is very necessary to inspect the battery module battery cell after the first welding.

[0004] When welding the battery module tabs for the first time, existing companies mostly use empty shell batteries / unfilled batteries to weld the tabs. After welding, a cutting machine is needed to cut off the battery shell, which consumes a lot of labor costs and causes waste of battery shell materials. Utility Model Content

[0005] The embodiment of the present application provides a top cover tooling for the initial inspection welding of the battery module bar, which is intended to replace the battery cell casing with the top cover tooling, place the battery cell top cover on the top cover tooling, and perform the battery module bar welding test instead of the battery cell, thereby reducing unnecessary scrapping of the battery cell and the company's economic losses.

[0006] To achieve the above objectives, the present application provides a top cover tooling for the first inspection welding of a battery module bar, comprising:

[0007] The tooling body comprises a bracket and a rectangular top plate arranged on the bracket;

[0008] A fixed baffle, fixed to the upper surface of one end of the rectangular top plate in the width direction, the fixed baffle extending along the length direction of the rectangular top plate;

[0009] A movable baffle, located on the upper surface of the rectangular top plate and arranged parallel to the fixed baffle, an area for placing a top cover is formed between the movable baffle and the fixed baffle, and a spacing between the movable baffle and the fixed baffle is adjustable to accommodate top covers of different lengths; and

[0010] A plurality of movable spacers are arranged at intervals on a side of the fixed baffle toward the movable baffle in the length direction of the fixed baffle. The movable spacers are used to isolate two adjacent top covers. The distance between two adjacent movable spacers is adjustable to accommodate top covers of different widths.

[0011] Optionally, the fixed baffle, the movable baffle and the movable spacer have the same height and are not higher than the thickness of the top cover.

[0012] Optionally, a dimension of the movable spacer in the width direction of the rectangular top plate is 60 mm-100 mm.

[0013] Optionally, the upper surface of the rectangular top plate is provided with a first slide groove extending along the width direction of the rectangular top plate, the inner wall of the first slide groove is provided with a first magnetic strip, and the bottom of the movable baffle is provided with a first slider which is slidably connected with the first slide groove and can be magnetically adsorbed with the first magnetic strip.

[0014] Optionally, the first magnetic strip is a magnet, and the first slider is an iron block.

[0015] Optionally, a second slide groove extending along the length direction of the rectangular top plate is provided on the side of the fixed baffle bar facing the movable baffle bar, a second magnetic strip is provided on the inner wall of the second slide groove, and a second slider is provided on the end of the movable spacer close to the fixed baffle bar, which is slidably connected to the second slide groove and can be magnetically adsorbed to the second magnetic strip.

[0016] Optionally, the bracket includes four columns, and the tops of the four columns are respectively fixed to the four corners of the lower surface of the rectangular top plate.

[0017] Optionally, an adjustable foot is provided at the bottom of the column, and the adjustable foot includes a screw and a pad arranged at one end of the screw. A vertically extending threaded hole is provided at the lower end of the column, and one end of the screw away from the pad is threadedly connected to the threaded hole.

[0018] The beneficial effects of the top cover tooling provided in the present application for the initial inspection welding of the battery module bar are: compared with the prior art, the top cover tooling of the present application is provided with a fixed baffle and a movable baffle parallel to the fixed baffle on the rectangular top plate of the tooling body, an area for placing the top cover is formed between the movable baffle and the fixed baffle, and the spacing between the movable baffle and the fixed baffle is adjustable; a plurality of movable spacers are arranged at intervals along the length direction on one side of the fixed baffle facing the movable baffle, and the spacing between two adjacent movable spacers is adjustable. During specific use, first adjust the distance between the movable baffle bar and the fixed baffle bar according to the length of the top cover of the battery cell in the battery module to be welded with the bar, and then adjust the distance between the two adjacent movable spacers on the fixed baffle bar according to the width of the top cover. Use the top cover tooling to replace the outer shells of multiple battery cells arranged side by side, and then put the multiple top covers one by one into the multiple areas formed by the movable baffle bar, the fixed baffle bar and the two adjacent movable spacers. The top cover tooling can replace multiple real battery cells arranged side by side for bar welding by cooperating with multiple top covers. At the same time, the top cover tooling can adapt to top covers of various sizes and can be reused, thereby reducing unnecessary scrapping of battery cells and economic losses to the company. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] in:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a top cover tooling for the first inspection welding of a battery module bar shown in an embodiment of the present application;

[0022] Figure 2 yes Figure 1 A schematic top view of a top cover tooling shown in FIG. 1 in which a plurality of top covers are used to replace a plurality of real battery cells arranged side by side;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the connection between the upright column of the bracket and the adjustable support foot in the tooling body of the top cover tooling shown in one embodiment of the present application.

[0024] Description of main component symbols:

[0025] 10. Top cover;

[0026] 100, tooling body; 110, bracket; 111, column; 11101, threaded hole; 112, connecting rod; 1111, adjustable foot; 11111, screw; 11112, cushion block; 120, rectangular top plate; 1201, first slide groove;

[0027] 200, fixed stop bar; 201, second slide groove;

[0028] 300, movable stop bar;

[0029] 400. Movable spacer. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0035] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0036] As described in the background technology, when welding the battery module tabs for the first time, existing companies mostly use empty shell batteries / unfilled batteries to weld the tabs. After welding, a cutting machine is needed to cut off the battery shell, which consumes a lot of labor costs and causes waste of battery shell materials.

[0037] In order to solve the above problems, the embodiment of the present application provides a top cover tooling for the first inspection welding of the battery module bar, such as Figure 1 As shown, the top cover tooling includes a tooling body 100 , a fixed blocking bar 200 , a movable blocking bar 300 and a plurality of movable spacers 400 .

[0038] The tooling body 100 includes a bracket 110 and a rectangular top plate 120 disposed on the bracket 110. The fixed baffle 200 is fixed to the upper surface of the rectangular top plate 120 at one end in the width direction, and the fixed baffle 200 extends along the length direction of the rectangular top plate 120. The movable baffle 300 is located on the upper surface of the rectangular top plate 120 and is arranged parallel to the fixed baffle 200. An area for placing a top cover is formed between the movable baffle 300 and the fixed baffle 200. The spacing between the movable baffle 300 and the fixed baffle 200 is adjustable to accommodate top covers of different lengths. A plurality of movable spacers 400 are arranged at intervals on the side of the fixed baffle 200 facing the movable baffle 300 in the length direction of the fixed baffle 200. The movable spacers 400 are used to isolate two adjacent top covers. The spacing between two adjacent movable spacers 400 is adjustable to accommodate top covers of different widths.

[0039] In the embodiment of the present application, the top cover tooling is provided with a fixed baffle 200 and a movable baffle 300 parallel to the fixed baffle 200 on the rectangular top plate 120 of the tooling body 100, an area for placing the top cover is formed between the movable baffle 300 and the fixed baffle 200, and the spacing between the movable baffle 300 and the fixed baffle 200 is adjustable; a plurality of movable spacers 400 are spaced apart along the length direction on one side of the fixed baffle 200 facing the movable baffle 300, and the spacing between two adjacent movable spacers 400 is adjustable.

[0040] When used specifically, Figure 2As shown, first, according to the length of the top cover 10 of the battery cell in the battery module to be welded with the baffles, the spacing between the movable baffle bar 300 and the fixed baffle bar 200 is adjusted, so that the top cover 10 can be just placed between the movable baffle bar 300 and the fixed baffle bar 200 in the length direction, and then the spacing between two adjacent movable spacers 400 on the fixed baffle bar 200 is adjusted according to the width of the top cover 10, so that the top cover 10 can be just placed between the two movable spacers 400 in the width direction, and the top cover tooling is used to replace the outer shells of multiple battery cells arranged side by side, and then the multiple top covers 10 are respectively placed one by one into the multiple areas surrounded by the movable baffle bar 300, the fixed baffle bar 200 and the two adjacent movable spacers 400. The top cover tooling can replace multiple real battery cells arranged side by side for baffle welding with the multiple top covers 10. At the same time, the top cover tooling can adapt to top covers 10 of various sizes and can be reused, thereby reducing unnecessary scrapping of battery cells and economic losses to the company.

[0041] In one embodiment, if Figure 1-Figure 2 As shown, the heights of the fixed baffle 200, the movable baffle 300 and the movable spacer 400 are the same and are not higher than the thickness of the top cover 10. This design can not only realize the circumferential limiting effect of the fixed baffle 200, the movable baffle 300 and the movable spacer 400 on the top cover 10, but also prevent the fixed baffle 200, the movable baffle 300 and the movable spacer 400 from being too high to affect the subsequent welding of the bar between two adjacent top covers 10.

[0042] In one embodiment, if Figure 1-Figure 2 As shown, the dimension of the movable spacer 400 in the width direction of the rectangular top plate 120 is 60 mm-100 mm.

[0043] It should be noted that among the commonly used automotive power batteries on the market, the length of the square battery cells is usually 150mm-170mm. Setting the length of the movable spacer 400 to 60mm-100mm can not only ensure a larger contact area between the top cover 10 and the movable spacer 400 and improve the stability of the top cover 10, but also the length of the movable spacer 400 will not affect the spacing adjustment between the movable baffle 300 and the fixed baffle 200.

[0044] In one embodiment, if Figure 1 As shown, the upper surface of the rectangular top plate 120 is provided with a first slide groove 1201 extending along the width direction of the rectangular top plate 120, the inner wall of the first slide groove 1201 is provided with a first magnetic strip (not shown in the figure), and the bottom of the movable baffle 300 is provided with a first slider (not shown in the figure) which is slidably connected with the first slide groove 1201 and can be magnetically adsorbed with the first magnetic strip.

[0045] It can be understood that the magnetic adsorption force between the first magnetic strip and the first slider can fix the movable baffle 300 on the rectangular top plate 120 to prevent the movable baffle 300 from moving freely on the rectangular top plate 120. If it is necessary to adjust the distance between the movable baffle 300 and the fixed baffle 200, the operator pushes the movable baffle 300 by hand and applies an external force greater than the above-mentioned magnetic adsorption force to make the movable baffle 300 move relative to the rectangular top plate 120.

[0046] Through the above arrangement, the first slider at the bottom of the movable baffle 300 cooperates with the first slide groove 1201 on the rectangular top plate 120 to guide the movement of the movable baffle 300 and ensure that the movable baffle 300 is parallel to the fixed baffle 200; at the same time, the first slider cooperates with the first magnetic strip arranged on the inner wall of the first slide groove 1201 to fix the movable baffle 300 and prevent the movable baffle 300 from moving freely on the rectangular top plate 120.

[0047] Specifically, the first slide slot 1201 can be a T-slot or a dovetail slot, the first magnetic strip is a magnet, preferably made of NdFeB, and the first slider is an iron block. Of course, in other embodiments, the first magnetic strip and the first slider can also be magnets.

[0048] In one embodiment, if Figure 1 As shown, a second slide groove 201 extending along the length direction of the rectangular top plate 120 is provided on the side of the fixed baffle 200 facing the movable baffle 300, a second magnetic strip (not shown in the figure) is provided on the inner wall of the second slide groove 201, and a second slider (not shown in the figure) which is slidably connected with the second slide groove 201 and can be magnetically adsorbed to the second magnetic strip is provided on one end of the movable spacer 400 close to the fixed baffle 200.

[0049] Through the above arrangement, the second slider at one end of the movable spacer 400 cooperates with the second slide groove 201 on the fixed baffle 200 to guide the movement of the movable spacer 400 and ensure that the movable spacer 400 is perpendicular to the fixed baffle 200; at the same time, the second slider cooperates with the second magnetic strip arranged on the inner wall of the second slide groove 201 to fix the movable spacer 400 and prevent the movable spacer 400 from moving freely on the fixed baffle 200. It can be understood that if the distance between adjacent movable spacers 400 needs to be adjusted, the operator pushes the movable spacer 400 by hand, and applies an external force greater than the magnetic adsorption force to make the movable spacer 400 move relative to the fixed baffle 200.

[0050] Specifically, the second slide slot 201 can be a T-slot or a dovetail slot, the second magnetic strip is a magnet, preferably made of NdFeB, and the second slider is an iron block. Of course, in other embodiments, the second magnetic strip and the second slider can also be magnets.

[0051] In one embodiment, if Figure 1 As shown, the bracket 110 includes four columns 111, and the tops of the four columns 111 are respectively fixed at the four corners of the lower surface of the rectangular top plate 120. Furthermore, in order to improve the stability between the columns 111, the bracket 110 also includes two connecting rods 112. The two columns 111 located at one end of the rectangular top plate 120 in the length direction are connected by a connecting rod 112, and the two columns 111 located at the other end of the rectangular top plate 120 in the length direction are connected by another connecting rod 112.

[0052] In a specific embodiment, Figure 1 and Figure 3 As shown, the bottom of the column 111 is provided with an adjustable foot 1111, and the adjustable foot 1111 includes a screw rod 11111 and a pad 11112 provided at one end of the screw rod 11111. The lower end of the column 111 is provided with a vertically extending threaded hole 11101, and one end of the screw rod 11111 away from the pad 11112 is screwed into the threaded hole 11101. By rotating the pad 11112, the length of the screw rod 11111 extending into the threaded hole 11101 can be adjusted, thereby adjusting the height of the entire top cover tooling, so that it can better simulate the height of the real battery cell.

[0053] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A top cover tooling for the first inspection welding of battery module tabs, characterized in that: include: The tooling body comprises a bracket and a rectangular top plate arranged on the bracket; A fixed baffle, fixed to the upper surface of one end of the rectangular top plate in the width direction, the fixed baffle extending along the length direction of the rectangular top plate; A movable baffle, located on the upper surface of the rectangular top plate and arranged parallel to the fixed baffle, an area for placing a top cover is formed between the movable baffle and the fixed baffle, and a spacing between the movable baffle and the fixed baffle is adjustable to accommodate top covers of different lengths; as well as A plurality of movable spacers are arranged at intervals on a side of the fixed baffle toward the movable baffle in the length direction of the fixed baffle. The movable spacers are used to isolate two adjacent top covers. The distance between two adjacent movable spacers is adjustable to accommodate top covers of different widths.

2. The top cover tooling according to claim 1, characterized in that: The fixed baffle, the movable baffle and the movable spacer have the same height and are not higher than the thickness of the top cover.

3. The top cover tooling according to claim 1, characterized in that: The dimension of the movable spacer in the width direction of the rectangular top plate is 60 mm-100 mm.

4. The top cover tooling according to claim 1, characterized in that: The upper surface of the rectangular top plate is provided with a first slide groove extending along the width direction of the rectangular top plate, the inner wall of the first slide groove is provided with a first magnetic strip, and the bottom of the movable baffle is provided with a first slider which is slidably connected with the first slide groove and can be magnetically adsorbed with the first magnetic strip.

5. The top cover tooling according to claim 4, characterized in that: The first magnetic attraction strip is a magnet, and the first sliding block is an iron block.

6. The top cover tooling according to claim 1, characterized in that: A second slide groove extending along the length direction of the rectangular top plate is provided on the side of the fixed baffle bar facing the movable baffle bar, a second magnetic strip is provided on the inner wall of the second slide groove, and a second slider which is slidably connected with the second slide groove and can be magnetically adsorbed to the second magnetic strip is provided on one end of the movable spacer close to the fixed baffle bar.

7. The top cover tooling according to claim 1, characterized in that: The bracket comprises four columns, and the tops of the four columns are respectively fixed at the four corners of the lower surface of the rectangular top plate.

8. The top cover tooling according to claim 7, characterized in that: An adjustable foot is arranged at the bottom of the column, and the adjustable foot comprises a screw rod and a pad arranged at one end of the screw rod. A vertically extending threaded hole is arranged at the lower end of the column, and one end of the screw rod away from the pad is screwed into the threaded hole.

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