CN116237690A - A busbar welding positioning fixture - Google Patents

Abstract

The invention provides a busbar welding positioning fixture, which comprises: mounting a base, a battery cell positioning assembly and a busbar positioning assembly; the battery cell positioning assembly is mounted on the mounting base, and a battery cell clamping space with adjustable size is formed on the battery cell positioning assembly and is used for clamping the side wall of the battery cell; the busbar positioning assembly is movably mounted on the mounting base along the direction approaching or departing from the cell positioning assembly, and a positioning hole is formed in the busbar positioning assembly in a penetrating manner and is used for positioning the busbar; the positioning assembly of the confluence sheet is movable, so that the positioning hole is moved to one side of the battery core clamping space, which is opposite to the mounting base, and is used for welding the confluence sheet to one end part of the battery core. According to the invention, registration welding is performed through relative movement between the battery cell positioning assembly and the bus plate positioning assembly, so that welding errors caused by shaking and the like of the bus plate in the welding process are avoided, and concentricity and compaction between the bus plate and the end part of the battery cell are facilitated.

Description

A busbar welding positioning fixture

technical field

The invention relates to the technical field of electric core production equipment, in particular to a busbar welding positioning fixture.

Background technique

In the battery production process, it is necessary to weld the busbar on the battery cell, which is convenient for subsequent processing procedures.

In the prior art, the busbar is often directly clamped by the mechanical arm and transported to the end of the battery cell, and then welded by a welding device. However, this welding method is likely to cause the busbar to shake during the welding process, and The fit between the battery cell and the busbar is not tight, and the concentric arrangement between the busbar and the end of the battery cell cannot be guaranteed, resulting in a low welding yield.

Contents of the invention

The invention provides a busbar welding positioning fixture, which is used to solve the problem of low yield rate of busbar and electric core welding, and realize concentric welding between busbar and electric core.

The present invention provides a busbar welding positioning fixture, comprising:

Install the base;

The cell positioning component is installed on the installation base, and a cell clamping space with adjustable size is formed on the cell positioning component, and the side wall of the cell clamping space is used to clamp the cell; and,

The busbar positioning component is movably installed on the installation base along the direction close to or away from the cell positioning component. The busbar positioning component is provided with a positioning hole, and the positioning hole is used to position the busbar;

Wherein, the busbar positioning component moves, so that the positioning hole moves to the side of the battery cell clamping space facing away from the installation base, and is used for welding the busbar to one end of the battery cell.

According to the busbar welding positioning fixture provided by the present invention, the busbar welding positioning fixture also includes a bearing block, which is installed on the installation base, and the other end of the battery cell is elastically supported on the bearing block;

A first elastic member is arranged between the bearing block and the installation base;

Wherein, the battery cell clamping space and the bearing block jointly carry the battery cell, and the clamping center of the battery cell clamping space and the bearing center of the bearing groove are arranged concentrically.

According to the positioning jig for bus bar welding provided by the present invention, the bottom side wall of the positioning hole is provided with a guiding slope for guiding the end of the battery cell into the guiding groove.

According to the bus bar welding positioning fixture provided by the present invention, the cell positioning assembly includes:

a fixed block fixedly mounted to the mounting base; and,

The clamping plate is movably installed on the fixed block and is spaced apart from the fixed block. The clamping plate has a movable stroke in the direction of approaching or away from the fixed block. A cell clamping space is formed between the clamping plate and the fixed block.

According to the bus bar welding positioning fixture provided by the present invention, the end surface of the fixing block facing the clamping plate is provided with a through hole;

Cell positioning components also include:

a guide rod, one end of which is movably passed through the through hole, and the other end is connected to the clamping plate; and,

The second elastic member is installed between the guide rod and the fixed block, and is used to drive the guide rod to move the clamping plate toward the fixed block to clamp the battery cell.

According to the bus bar welding positioning fixture provided by the present invention, the end surface of the fixing block facing the clamping plate is concavely provided with a profiling groove, and the profiling groove is used to fit the side wall of the battery cell.

According to the bus bar welding positioning fixture provided by the present invention, the bus bar includes a body and an extension;

The busbar positioning component is also provided with a positioning slot, the positioning slot is adjacent to the positioning hole, the positioning slot is used for carrying the extension, and the positioning hole is used for positioning the body.

According to the busbar welding positioning fixture provided by the present invention, the busbar positioning assembly includes:

The movable bracket is movably installed on the installation base in the direction toward or away from the cell positioning assembly;

The positioning plate is movably installed on the movable support along the vertical direction, and the positioning plate is provided with positioning holes; and,

The driving structure is used to drive the movable support and the positioning plate to move.

According to the busbar welding positioning fixture provided by the present invention, a sliding fit structure is formed between the mounting base and the movable bracket, and the sliding fit structure includes a slide rail and a slide groove arranged in cooperation with each other, the slide rail is slidably installed in the slide groove, and the slide rail and Among the chutes, one of them is set on the installation base, and the other is set on the movable support.

According to the busbar welding positioning jig provided by the present invention, the busbar positioning assembly further includes a buffer, and the buffer is arranged between the movable bracket and the installation base to buffer the movement of the movable bracket.

In the embodiment provided by the present invention, both the cell positioning assembly and the bus bar positioning assembly are installed on the installation base, and when welding the cell and the bus bar, the cell is placed in the cell clamping space and adjusted The size of the battery cell clamping space, the battery cell is firmly clamped in the cell clamping space, at the same time, the bus bar is placed on the bus bar positioning component, and the bus bar positioning component is moved so that the bus bar positioning component drives the bus flow Move to the side of the cell clamping space facing away from the installation base. At this time, the end of the cell and the busbar are kept in contact with each other through the positioning hole. Both the cell and the busbar are fixed by the positioning component, and then pass The relative movement between the positioning components is used for registration welding to avoid welding errors caused by the shaking of the busbar during the welding process. At the same time, the relative movement between the positioning components is easy to control, and it is convenient to maintain concentricity between the busbar and the end of the cell , and press solder.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is a three-dimensional structural schematic diagram of a busbar welding positioning fixture provided by the present invention;

Fig. 2 is a three-dimensional structural schematic diagram of the cell positioning assembly in Fig. 1;

Fig. 3 is a schematic diagram of the three-dimensional structure of the bearing block in Fig. 1;

FIG. 4 is a schematic structural view of the busbar provided by the present invention;

Fig. 5 is a schematic structural view of the bottom view of the positioning hole in Fig. 2;

FIG. 6 is a schematic view of the top view of the positioning hole in FIG. 2 .

Reference signs:

100. Busbar welding positioning fixture; 1. Installation base; 2. Cell positioning assembly; 21. Fixed block; 22. Clamping plate; 23. Guide rod; 24. Bearing block; 25. First elastic member; 3. 31, positioning hole; 311, guiding slope; 32, positioning slot; 33, movable bracket; 34, positioning plate; 35, buffer; A1, body; A2, extension.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1 , the present invention provides a bus bar welding positioning fixture 100, including a mounting base 1, a cell positioning component 2 and a bus positioning component 3; the cell positioning component 2 is installed on the mounting base 1, and the cell positioning component 2 is formed with an adjustable battery cell clamping space, which is used to clamp the side wall of the battery cell; the busbar positioning component 3 is movable and installed in the direction close to or away from the cell positioning component 2 until On the base 1, the busbar positioning component 3 is provided with a positioning hole 31, and the positioning hole 31 is used to position the busbar; wherein, the busbar positioning component 3 is movable, so that the positioning hole moves to the cell clamping space facing away from the installation base 1 side, used to weld the busbar to one end of the cell.

In the embodiment provided by the present invention, both the cell positioning component 2 and the bus bar positioning component 3 are installed on the installation base 1, and the cell is placed in the cell clamping space when welding the cell and the bus bar , and adjust the size of the battery cell clamping space, firmly clamp the battery cell in the cell clamping space, at the same time, place the busbar on the busbar positioning component 3, and use the movable busbar positioning component 3 to make the bus flow The sheet positioning component 3 drives the busbar and moves to the side of the battery cell clamping space facing away from the installation base 1. At this time, the end of the battery cell and the busbar are kept in contact with each other through the positioning hole, and the battery cell and the busbar are respectively passed through the electric cell. The position of the core positioning component and the bus positioning component is fixed, and then the relative movement between the positioning components is used for registration welding, so as to avoid the welding error caused by the shaking of the bus bar during the welding process, and at the same time, the relative movement between the positioning components is convenient. Control to facilitate compression welding between the manifold and the end of the cell.

It should be noted that the cross-sectional shape of the positioning hole is similar to the cross-sectional shape of the busbar, which is a profiling hole, so as to accommodate the busbar and make the busbar be at the positioning center of the positioning hole.

Further, referring to FIG. 2, the cell positioning assembly 2 also includes a bearing block 24, which is installed on the installation base 1, and the other end of the battery cell is elastically supported on the bearing block 24; the bearing block 24 and the installation base 1 is provided with a first elastic member 25; wherein, the battery cell clamping space and the bearing block 24 jointly carry the battery cell, and the clamping center of the battery cell clamping space and the bearing center of the bearing groove are arranged concentrically. The mounting base 1 is provided with a bearing block 24, which is convenient for the battery cell to be placed vertically on the mounting base 1. In this embodiment, the battery cell is first placed in the bearing block 24, and then clamped by the battery cell positioning assembly. Fix the position of the battery core.

At the same time, in this embodiment, the clamping center of the cell clamping space is set concentrically with the bearing center of the bearing block 24, so that each time the battery is clamped, the battery is kept in the middle of the bearing block, and at the same time, the subsequent Butt between busbars.

In addition, through the setting of the first elastic member 25, when the electric core is placed on the carrying block 24 after the kneading process, it elastically contacts the carrying block 24, and then clamps it, so that the ends of the electric core are at the same height, And the bottom can be in contact with the bearing block 24 to ensure that the cells are at the same height level, to ensure that each subsequent cell can be in contact with the bus bar, and to avoid the situation that some cells have already contacted the bus bar, and some cells are still in contact with the bus bar. The core is not tight.

It should be noted that, please refer to FIG. 3 , the first elastic member 25 has multiple implementations. In this embodiment, the bearing block 24 is provided with a through hole, and the mounting base 1 is provided with a mounting hole; the cell positioning assembly 2 also includes a mounting rod. One end of the mounting rod is installed in the mounting hole, and the other end is mounted in the via hole; the first elastic member 25 includes a spring, which is sleeved on the mounting rod and is used for elastically carrying the battery cell.

On the other hand, please refer to FIG. 4 , in order to facilitate the positioning between the battery cell and the bus bar, the bottom sidewall of the positioning hole 31 is provided with a guide slope 311 for guiding the end of the battery cell into the guide groove. When the busbar positioning assembly 3 approaches the cell positioning assembly 2, the end of the cell first touches the positioning hole on the busbar positioning assembly 3, and slides into the positioning hole 31 through the guide slope 311 on the positioning hole , so as to ensure the cooperation between the battery cell and the busbar, complete the concentric setting between the battery cell and the busbar, and avoid the deviation between the battery cell and the positioning hole 31 when contacting, resulting in the incorrect alignment of the positioning hole, which will cause the cell It cannot be concentric with the busbar.

On the other hand, the cell positioning assembly 2 includes a fixed block 21 and a clamping plate 22; the fixed block 21 is fixedly mounted on the installation base 1; the clamping plate 22 is movably mounted on the fixed block 21, and is spaced apart from the fixed block 21 , the clamping plate 22 has a movable stroke in the direction of approaching or moving away from the fixed block 21 , and a cell clamping space is formed between the clamping plate 22 and the fixed block 21 . In this embodiment, by moving the clamping plate 22 relative to the fixed block 21, the cell is clamped between the clamping plate 22 and the fixed block 21, which facilitates the clamping of the cell, which can be completed by two relative parts Clamping, the clamping method is simple and reliable.

It should be noted that there are many ways for the clamping plate 22 to move relative to the fixed block 21 , for example, a driving motor directly drives the clamping plate 22 to move toward the fixed block 21 .

Further, in this embodiment, the end surface of the fixing block 21 facing the clamping plate 22 is provided with a second through hole; the cell positioning assembly 2 also includes a guide rod 23 and a second elastic member; one end of the guide rod 23 moves through the Located in the second via hole, the other end is connected to the clamping plate 22; the second elastic member is installed between the guide rod 23 and the fixed block 21, and is used to drive the guide rod 23 to drive the clamping plate 22 to the side close to the fixed block 21. Move in the direction to hold the battery. In this embodiment, the clamping plate 22 can only move along the direction approaching or away from the fixed block 21 through the guide rod 23, and then the guide rod is automatically driven by setting an elastic member between the guide rod 23 and the fixed block 21. 23 moves so that the clamping plate 22 automatically moves toward the fixed block 21 to hold the cell.

Wherein, the second elastic member has various implementation modes, and in the present embodiment, the second elastic member is a spring, and the spring is sleeved on the guide rod 23 to drive the guide rod 23 to move; wherein the spring can be provided with multiple, so that to maintain sufficient pressure.

Furthermore, the cell positioning assembly 2 also includes a driving member, which is drivingly connected to the guide rod 23, so as to drive the guide rod to drive the clamping plate to move away from the fixed block. It should be noted that the driving force of the driving member to move the guide rod must be greater than the holding force of the second elastic member, so as to ensure that the cell clamping space can be opened in time and avoid mutual interference between the cell and the cell positioning assembly.

In order to better clamp the battery cell, the end surface of the fixing block 21 facing the clamping plate 22 is concavely provided with a profiling groove, and the profiling groove is used to fit the side wall of the battery cell. In this embodiment, the profiling groove is used to prevent the cell from rolling or shifting between the fixing block 21 and the clamping plate 22, and ensure the vertical state of the cell to facilitate subsequent bonding with the busbar .

In this embodiment, the profiling groove is a V-shaped groove to ensure the clamping of the electric core.

On the other hand, referring to Fig. 5 to Fig. 6, the busbar includes a body A1 and an extension part A2; the busbar positioning component 3 is also provided with a positioning groove 32, the positioning groove 32 is adjacent to the positioning hole 31, and the positioning groove 32 is used to carry The extension part A2 and the positioning hole 31 are used for positioning the main body A1. In this embodiment, the positioning hole 31 is used to accommodate the main body A1, so as to facilitate the welding between the main body and the battery core, and the bus bar includes a positive bus bar and a negative bus bar, wherein the positive bus bar has a certain length The extension part A2, in order to avoid deformation of the extension part A2, in this embodiment, the extension part A2 is arranged in the positioning groove 32, so as to protect the extension part A2.

On the other hand, as shown in Figures 1 and 4, the bus bar positioning assembly 3 includes a movable bracket 33, a positioning plate 34 and a driving structure; the movable bracket 33 is movably installed on the installation base in a direction toward or away from the cell positioning assembly 2 The positioning plate 34 is installed on the movable support 33 along the vertical direction, and the positioning plate 34 is provided with a positioning hole 31; the driving structure is used to drive the movable support 33 and the positioning plate 34 to move. In this embodiment, the two-dimensional movement of the positioning hole 31 is realized by driving the movable support 33 and the positioning plate 34 through the driving structure, so that the positioning hole moves directly above the end of the battery cell to be welded.

Further, a sliding fit structure is formed between the installation base and the movable bracket 33, the sliding fit structure includes slide rails and chute slots arranged in cooperation with each other, the slide rails are slidably installed in the chute slots, and one of One is located on the mounting base, and the other is located on the movable bracket 33 . In this embodiment, through the cooperation of the sliding rail and the sliding groove, the movable bracket 33 is linearly slidably installed on the installation base, so as to approach or move away from the cell positioning assembly.

Furthermore, the bus bar positioning assembly 3 also includes a buffer 35 , which is arranged between the movable bracket 33 and the installation base 1 to buffer the movement of the movable bracket 33 . In this embodiment, the moving range of the movable support 33 is limited by the buffer 35 and the movement of the movable support 33 is buffered at the same time.

Similarly, in this embodiment, the vertical reciprocating movement between the positioning plate 34 and the movable bracket can also be performed through the cooperation of the slide rail and the slide groove.

In addition, the driving structure includes a plurality of driving cylinders, and the plurality of driving cylinders respectively drive the movement of the movable support and the movement of the positioning plate.

On the other hand, in this embodiment, the cell clamping space and the positioning holes form a welding positioning group, and there are multiple welding positioning groups, and the welding positioning groups are arranged at intervals.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A busbar welding positioning fixture, characterized in that, comprising: Install the base; The cell positioning assembly is installed on the installation base, the cell positioning assembly is formed with an adjustable cell clamping space, and the cell clamping space is used to clamp the side wall of the cell; as well as, The busbar positioning component is movably installed on the installation base in a direction close to or away from the cell positioning component. The busbar positioning component is provided with a positioning hole, and the positioning hole is used to position the busbar; Wherein, the busbar positioning assembly is movable, so that the positioning hole is moved to the side of the cell clamping space facing away from the installation base, so as to weld the busbar to one end of the cell . 2. The busbar welding positioning fixture according to claim 1, characterized in that, the cell positioning assembly further includes a bearing block, the bearing block is mounted on the installation base, and the bearing block is used for elastic carrying the other end of the cell; A first elastic member is arranged between the bearing block and the installation base; Wherein, the battery cell clamping space and the bearing block jointly carry the battery cell, and the clamping center of the battery cell clamping space and the bearing center of the bearing block are arranged concentrically. 3 . The positioning jig for bus bar welding according to claim 1 , wherein the bottom side wall of the positioning hole is provided with a guiding slope for guiding the end of the battery cell into the guiding groove. 4 . 4. The busbar welding positioning fixture according to claim 1, wherein the cell positioning assembly comprises: a fixed block fixedly mounted on the mounting base; and, The clamping plate is movably installed on the fixed block and is spaced apart from the fixed block. The clamping plate has a movable stroke in a direction close to or away from the fixed block. The clamping plate is connected to the fixed block. The cell clamping space is formed between the fixing blocks. 5. The busbar welding positioning fixture according to claim 4, characterized in that, the end surface of the fixing block facing the clamping plate is provided with a through hole; The cell positioning assembly also includes: a guide rod, one end of which is movable through the through hole, and the other end is connected to the clamping plate; and, The second elastic member is installed between the guide rod and the fixed block, and is used to drive the guide rod to move the clamping plate toward the fixed block to clamp the electric core. 6. The busbar welding positioning fixture according to claim 4, characterized in that, the end surface of the fixing block facing the clamping plate is concavely provided with a profiling groove, and the profiling groove is used to fit the The side wall of the cell. 7. The busbar welding positioning jig according to claim 1, wherein the busbar comprises a body and an extension part; The bus bar positioning component is further provided with a positioning slot, the positioning slot is adjacent to the positioning hole, the positioning slot is used to carry the extension part, and the positioning hole is used to position the body. 8. The busbar welding positioning fixture according to claim 1, wherein the busbar positioning assembly comprises: A movable bracket is movably installed on the installation base in a direction toward or away from the cell positioning assembly; The positioning plate is movably installed on the movable support along the vertical direction, and the positioning hole is provided on the positioning plate; and, The driving structure is used to drive the movable bracket and the positioning plate to move. 9. The busbar welding positioning fixture according to claim 8, characterized in that, a sliding fit structure is formed between the mounting base and the movable bracket, and the sliding fit structure includes sliding rails and sliding rails arranged in cooperation with each other. The slide rail is slidably installed in the slide groove, and one of the slide rail and the slide groove is arranged on the installation base, and the other is arranged on the movable support. 10. The busbar welding positioning fixture according to claim 9, wherein the busbar positioning assembly further comprises a buffer, and the buffer is arranged between the movable bracket and the installation base for The movement of the movable support is cushioned.

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