Connecting piece positioning device

Abstract

The utility model discloses a connecting piece positioning device which comprises core package placing plates arranged on two sides of a top cover positioning plate and a connecting piece positioning plate arranged on the top cover positioning plate, the connecting piece positioning plate is rotatably connected with the top cover positioning plate, the top cover positioning plate is provided with a profiling groove of which the shape is the same as that of a battery top cover, the battery top cover is embedded in the profiling groove, the connecting piece positioning plate abuts against a connecting piece and is used for fixing the position of the connecting piece, and the core package placing plate is used for bearing a core package. According to the utility model, the probability that the connecting sheet is inclined in the welding process is reduced, the welding effect of the core package is improved, and the production quality of the battery is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to a connecting piece positioning device. Background Art

[0002] Nowadays, large-capacity batteries have more stringent requirements for the welding of core packs. Generally, a soft connector is welded between the tabs and the top cover of the battery core pack, and the battery cell and the top cover are connected through the soft connector. If the tabs of the battery core pack and the battery cover are not welded firmly (i.e., a cold weld), due to the high capacity of the battery, the soft connector will heat up during high-rate charge and discharge, which will cause great safety hazards to the battery. Long-term use will also lead to problems such as battery performance and cycle life degradation, increase internal resistance, affect various parameter performances of the lithium battery, and ultimately make the battery unusable.

[0003] The invention patent with application number CN201910813176.1 discloses an ultrasonic welding positioning tool for the battery cover connecting piece and the battery pole group ear, including a base; a vertically distributed cover bracket is fixedly provided at the top middle position of the base; a longitudinally distributed battery cover positioning bracket is clamped on the top of the cover bracket; the top surface of the battery cover positioning bracket is used to place the battery cover, and the top of the battery cover has two battery cover connecting pieces that need to be welded; the right side of the battery cover positioning bracket is fixedly connected to the left side of the welding seat fixing frame; the right side of the welding seat fixing frame is fixedly connected to the pole group positioning bracket; the top surface of the pole group positioning bracket is used to place the battery pole group that needs to be welded to the ear; a welding base exposure hole is opened in the welding seat fixing frame; the base is fixedly installed with an ultrasonic welding base at a position directly below the welding base exposure hole. However, the core package and the soft connecting piece are connected by a soft tab in the middle. The indirect positioning method of positioning the soft connecting piece by positioning the core package cannot avoid the skewness of the soft connecting piece even if the core package is positioned correctly due to the soft connection between the two. Secondly, if there is a slight deviation in the positioning of the core package and the soft connecting piece during ultrasonic welding, this indirect positioning method will inevitably cause the connecting piece to be skewed after welding, which will affect the core package from being able to enter the shell for shell cover sealing welding, or forcibly enter the shell, resulting in the tearing of the core package tab and other quality risks. Utility Model Content

[0004] The purpose of the utility model is to provide a connecting piece positioning device, which reduces the probability of the connecting piece being tilted during the welding process, improves the welding effect of the core package, and further improves the production quality of the battery.

[0005] The technical solution adopted by the utility model to solve its technical problems is to propose a connecting piece positioning device, including core package placement plates arranged on both sides of the top cover positioning plate, and a connecting piece positioning plate arranged on the top cover positioning plate; the connecting piece positioning plate is rotatably connected to the top cover positioning plate, and the top cover positioning plate is provided with a contoured groove with the same shape as the battery top cover, the battery top cover is embedded in the contoured groove, the connecting piece positioning plate abuts against the connecting piece to fix the position of the connecting piece, and the core package placement plate is used to support the core package.

[0006] In an embodiment of the present application, the positioning device further comprises a hinge, one end of the hinge being fixedly connected to the connecting piece positioning plate, and the other end of the hinge being fixedly connected to the top cover positioning plate.

[0007] In the embodiment of the present application, a positioning pin is provided on the top cover positioning plate, and a positioning hole is provided on the connecting piece positioning plate. The positioning pin is plugged into the positioning hole when the connecting piece positioning plate abuts against the connecting piece.

[0008] In an embodiment of the present application, a magnet is provided on the top cover positioning plate.

[0009] In the embodiment of the present application, two connecting piece positioning plates are provided, and right-angle grooves are provided on both sides of the connecting piece positioning plates.

[0010] In the embodiment of the present application, a rounded corner is provided on a side of the connecting piece positioning plate close to the top cover positioning plate.

[0011] In the embodiment of the present application, two abutment blocks are provided on the connection piece positioning plate, and the two abutment blocks abut against two sides of the connection piece to fix the position of the connection piece.

[0012] In the embodiment of the present application, the abutment block is provided with rounded corners.

[0013] In an embodiment of the present application, limiting strips are provided on both sides of the core package placement plate.

[0014] In an embodiment of the present application, the core package placement plate and the top cover positioning plate are made of polytetrafluoroethylene.

[0015] The beneficial effects of the utility model are:

[0016] 1. This utility model proposes a connecting piece positioning device. By disposing a rotatable connecting piece positioning plate on the top cover positioning plate, the connecting piece positioning plate directly positions the connecting piece by abutting against the connecting piece. This reduces the probability of the connecting piece tilting during welding, improves the welding effect of the core pack, and thus improves the production quality of the battery.

[0017] 2. The utility model proposes a connecting piece positioning device. The top cover positioning plate is provided with a positioning pin, and the connecting piece positioning plate is provided with a positioning hole. When the connecting piece positioning plate abuts the connecting piece, the positioning pin is inserted into the positioning hole. The cooperation between the positioning pin and the positioning hole prevents the connecting piece from shaking slightly during rotation.

[0018] 3. The present invention proposes a connecting piece positioning device in which a magnet is provided on the top cover positioning plate. When the connecting piece positioning plate is used to fix the position of the connecting piece, the magnet attracts the connecting piece positioning plate, indirectly increasing the force exerted on the connecting piece by the connecting piece positioning plate, thereby improving the positioning effect of the connecting piece positioning plate.

[0019] 4. The utility model proposes a connecting piece positioning device, which is provided with two connecting piece positioning plates, and right-angle grooves are provided on both sides of the connecting piece positioning plates. When the connecting piece positioning plates are against the connecting piece, the right-angle grooves on the two connecting piece positioning plates will clamp the two ends of the core package, preventing the core package from moving significantly during the welding process and tearing the connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0021] Figure 1 This is a schematic diagram of the use of a connecting piece positioning device according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of a connecting piece positioning device according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of a top cover positioning plate of a connecting piece positioning device according to an embodiment of the present utility model;

[0024] Figure 4 This is a first schematic diagram of a connecting piece positioning plate of a connecting piece positioning device according to an embodiment of the present utility model;

[0025] Figure 5 This is a second schematic diagram of a connecting piece positioning plate of a connecting piece positioning device according to an embodiment of the present utility model.

[0026] In the figure: 1. Top cover positioning plate; 2. Core package placement plate; 21. Limiting strip; 3. Connecting piece positioning plate; 31. Positioning hole; 32. Right-angle groove; 33. Abutment block; 4. Contoured groove; 5. Hinge; 6. Positioning pin; 7. Magnet; 8. Top cover; 9. Core package; 10. Connecting piece. DETAILED DESCRIPTION

[0027] To more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following describes specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings described below are merely examples of the present invention. A person skilled in the art can, without inventive effort, derive other drawings and other embodiments from these drawings. Furthermore, design orientations only represent relative positional relationships between components, not absolute positional relationships.

[0028] The present invention provides a connecting piece positioning device. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 , mainly including the core package placement plate 2, the connecting piece positioning plate 3 and the top cover positioning plate 1.

[0029] In an embodiment of the present application, the connecting piece positioning device includes a core package placement plate 2, a connecting piece positioning plate 3 and a top cover positioning plate 1; the core package placement plate 2 is arranged on both sides of the top cover positioning plate 1, and the connecting piece positioning plate 3 is arranged on the top cover positioning plate 1. The connecting piece positioning plate 3 is rotatably connected to the top cover positioning plate 1, and the top cover positioning plate 1 is provided with a contoured groove 4 with the same shape as the battery top cover. Before welding, the top cover is first embedded in the contoured groove 4 of the top cover positioning plate 1, and the two core packages with the connecting pieces welded are placed on the two core package placement plates 2 respectively. The connecting piece positioning plate 3 is rotated so that the connecting piece positioning plate 3 is in contact with the connecting piece between the two core packages, and then the welding operation can be performed, that is, the connecting piece is welded to the top cover. After the welding is completed, the connecting piece positioning plate 3 is rotated to take out the core package with the welded top cover. Compared with the prior art which positions the connecting piece by indirect positioning, in the present application, a rotatable connecting piece positioning plate 3 is provided on the top cover positioning plate 1. The connecting piece positioning plate 3 can directly position the connecting piece by abutting against the connecting piece, thereby reducing the probability of the connecting piece being skewed during the welding process, improving the welding effect of the core pack, and thereby improving the production quality of the battery.

[0030] In one embodiment, the positioning device further includes a hinge 5, one end of which is fixedly connected to the connecting piece positioning plate 3, and the other end of which is fixedly connected to the top cover positioning plate 1. The connecting piece positioning plate 3 can rotate along the axis of the hinge 5, so that when positioning is required, the connecting piece positioning plate 3 can be rotated to fix the position of the connecting piece. After welding is completed, the connecting piece positioning plate 3 can be rotated in the opposite direction to remove the core package with the top cover welded.

[0031] Furthermore, a positioning pin 6 is provided on the top cover positioning plate 1, and a positioning hole 31 is provided on the connecting piece positioning plate 3. When the connecting piece positioning plate 3 abuts against the connecting piece, the positioning pin 6 is inserted into the positioning hole 31. The cooperation between the positioning pin 6 and the positioning hole 31 prevents the connecting piece from shaking slightly during the rotation process.

[0032] Furthermore, a magnet 7 is provided on the top cover positioning plate 1. When the connecting piece positioning plate 3 fixes the position of the connecting piece, the magnet 7 will adsorb the connecting piece positioning plate 3, indirectly enhancing the force exerted on the connecting piece from the connecting piece positioning plate 3, thereby improving the positioning effect of the connecting piece positioning plate 3.

[0033] In one embodiment, two connecting piece positioning plates 3 are provided, and right-angle grooves 32 are provided on both sides of the connecting piece positioning plates 3. When the connecting piece positioning plates 3 are against the connecting piece, the right-angle grooves 32 on the two connecting piece positioning plates 3 will clamp the two ends of the core package to prevent the core package from moving significantly during welding and tearing the connecting piece.

[0034] Furthermore, a rounded corner is provided on the side of the connecting piece positioning plate 3 close to the top cover positioning plate 1. As can be seen from the above, the two core packages with welded connecting pieces are first placed on the two core package placement plates 2 respectively, and then the connecting piece positioning plate 3 is rotated. Therefore, a rounded corner is provided on the side of the connecting piece positioning plate 3 close to the top cover positioning plate 1, which can reduce the wear between the connecting piece positioning plate 3 and the core package.

[0035] In one embodiment, two abutment blocks 33 are provided on the connection piece positioning plate 3 , and the two abutment blocks 33 abut against two sides of the connection piece, thereby fixing the position of the connection piece.

[0036] Furthermore, the intersections of the surfaces of the abutment block 33 are rounded to prevent the connecting piece positioning plate 3 from scratching the connecting piece during the rotation process.

[0037] In one embodiment, limiting strips 21 are provided on both sides of the core pack placement plate 2 , and the limiting strips 21 abut against the core pack to prevent the core pack from sliding.

[0038] In one embodiment, the core package placement plate 2 and the top cover positioning plate 1 are made of polytetrafluoroethylene.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0040] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A connecting piece positioning device, characterized in that: The invention comprises core pack placement plates (2) arranged on both sides of a top cover positioning plate (1), and a connecting piece positioning plate (3) arranged on the top cover positioning plate (1); the connecting piece positioning plate (3) is rotatably connected to the top cover positioning plate (1); the top cover positioning plate (1) is provided with a contoured groove (4) having the same shape as the battery top cover, the battery top cover is embedded in the contoured groove (4); the connecting piece positioning plate (3) abuts against the connecting piece to fix the position of the connecting piece, and the core pack placement plate (2) is used to support the core pack.

2. A connecting piece positioning device according to claim 1, characterized in that: The positioning device further comprises a hinge (5), one end of the hinge (5) being fixedly connected to the connecting piece positioning plate (3), and the other end of the hinge (5) being fixedly connected to the top cover positioning plate (1).

3. A connecting piece positioning device according to claim 2, characterized in that: The top cover positioning plate (1) is provided with a positioning pin (6), and the connecting piece positioning plate (3) is provided with a positioning hole (31). The positioning pin (6) is plugged into the positioning hole (31) when the connecting piece positioning plate (3) abuts against the connecting piece.

4. A connecting piece positioning device according to claim 2, characterized in that: A magnet (7) is provided on the top cover positioning plate (1).

5. The connecting piece positioning device according to claim 3, characterized in that: Two connecting piece positioning plates (3) are provided, and right-angle grooves (32) are provided on both sides of the connecting piece positioning plates (3).

6. The connecting piece positioning device according to claim 5, characterized in that: A rounded corner is provided on one side of the connecting piece positioning plate (3) close to the top cover positioning plate (1).

7. The connecting piece positioning device according to claim 2, characterized in that: Two abutment blocks (33) are provided on the connecting piece positioning plate (3), and the two abutment blocks (33) abut against two sides of the connecting piece to fix the position of the connecting piece.

8. The connecting piece positioning device according to claim 7, characterized in that: The abutment block (33) is provided with a rounded corner.

9. The connecting piece positioning device according to claim 2, characterized in that: Limiting strips (21) are provided on both sides of the core package placement plate (2).

10. The connecting piece positioning device according to claim 2, characterized in that: The core package placement plate (2) and the top cover positioning plate (1) are made of polytetrafluoroethylene.

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