Welding auxiliary positioning tool for battery cell pole and test connecting piece

Abstract

The utility model discloses an auxiliary positioning tool for welding of a battery cell pole and a test connecting piece, which comprises a positioning seat, the surface of the positioning seat is provided with a through hole which is through up and down and is convenient for welding, and a limiting groove matched with a horizontal part of a busbar is formed below the through hole; the auxiliary welding positioning tool for the battery cell pole and the test connecting piece further comprises a battery cell clamping device detachably connected with the positioning seat, and the positioning seat is fixed to the battery cell through the clamping device. The welding device can be suitable for cells of different models, the connecting pieces are in tight contact with the pole columns of the cells during welding, the welding effect can be ensured, the welding effectiveness is ensured while the single cell connecting pieces are efficiently welded, the connectivity is good, welding slag is reduced, and test errors caused by non-cell reasons during cell testing are eliminated as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core welding, in particular to a welding auxiliary positioning tool for a battery core pole and a test connecting piece. Background Art

[0002] After the power square battery is produced, its single battery needs to be tested, such as cycle, storage, high and low temperature, and rate performance. Since the battery pole cannot be directly connected to the test equipment, it is necessary to weld the busbar on the battery pole, and then connect the test equipment through the busbar for testing. Therefore, the welding effect and efficiency of the busbar become top priority.

[0003] At present, in the prior art, the busbar is welded by pre-bonding the busbar to the pole of the battery cell with tape, and then peeling off the tape after welding. The heat generated during welding in this way will melt the tape, leaving adhesive residue, resulting in poor overcurrent effect when the busbar is connected to the current line, and easily triggering a thermal overtemperature alarm. In addition, this method has weak fixing strength and cannot guarantee the contact effect between the busbar and the pole of the battery cell. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and defects of the prior art and to provide a welding auxiliary positioning tool for a battery cell pole and a test connecting piece that can be adapted to battery cells of different thicknesses.

[0005] A welding auxiliary positioning tool for a battery cell pole and a test connecting piece, comprising a positioning seat, a surface of the positioning seat having a through hole extending vertically therethrough for facilitating welding, a limiting groove matching the horizontal portion of a bus bar being formed below the through hole; the welding auxiliary positioning tool for the battery cell pole and the test connecting piece also comprises a battery cell clamping device detachably connected to the positioning seat, and the positioning seat is fixed to the battery cell via the battery cell clamping device.

[0006] The battery cell clamping device includes: two sliding rods are symmetrically arranged and installed on the front and rear side surfaces of the positioning seat, and the outer side of the rear side surface of the positioning seat is connected to the rear moving plate and the rear baffle plate through two sliding rods, and the rear moving plate is located between the rear baffle plate and the positioning seat; the outer side of the front side surface of the positioning seat is connected to the front moving plate and the front baffle plate through two sliding rods, and the front moving plate is located between the front baffle plate and the positioning seat, the front moving plate is connected to the front screw that drives the forward moving plate to move, and the rear moving plate is connected to the rear screw that drives the rear moving plate to move; when the forward moving plate and the rear moving plate are moved into place, they can be clamped on the front and rear large surfaces of the battery cell.

[0007] Among them, a threaded hole is horizontally penetrated through the upper part of the forward moving plate, and a central threaded hole is provided on the front baffle plate. After the front screw rod passes through the threaded holes of the front baffle plate and the forward moving plate, its rear end is rotationally connected to the positioning seat, and the front screw rod can be driven to move forward and backward along the sliding rod by rotating the front screw rod.

[0008] Wherein, the rear end of the front screw is restricted and positioned by the upper limit seat in a first rotation limiting blind hole formed by the first limiting groove on the upper surface of the positioning seat and the upper limit seat groove of the upper limit seat.

[0009] Wherein, the rear screw rod passes through the lower central threaded hole of the rear baffle plate, and the front end thereof abuts against the rear shift plate. Rotating the rear screw rod can drive the rear shift plate to move forward and backward along the slide rod.

[0010] Wherein, the rear end of the rear screw is restricted and positioned by a lower limit seat in a second rotation limit blind hole formed by the second limit groove on the lower surface of the rearward moving plate and the lower limit seat groove of the lower limit seat.

[0011] Wherein, the rearward moving plate has a clamping surface at the rear side of the battery cell and a slide bar mounting surface for sliding contact with the slide bar, and the slide bar mounting surface is connected to the clamping surface at the rear side of the battery cell through a downward and outward transition connection inclined surface.

[0012] Wherein, the forward moving plate has a battery core front side clamping surface, and the battery core front side clamping surface is connected to a slide rod installation vertical surface through an upward and outward connecting inclined surface.

[0013] Wherein, the forward plate and the rearward plate are prefabricated with slide rod holes that match the slide rod.

[0014] Wherein, the front baffle plate and the rear baffle plate each have a fixing hole fixedly connected to the end of the sliding rod.

[0015] The utility model provides a welding auxiliary positioning tool for a battery cell pole and a test connecting piece, the tool can be adjusted according to different battery cells and is suitable for battery cells of different models. During welding, the connecting piece and the battery cell pole are in close contact without the intervention of other foreign matter, thereby ensuring the welding effect, and ensuring the welding effectiveness while efficiently welding the single battery cell connecting piece, with good connectivity, reduced generation of welding slag, and minimization of test errors caused by non-battery cell reasons during battery cell testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a welding auxiliary positioning tool for a battery pole and a test connecting piece. Figure 1 .

[0017] Figure 2The welding auxiliary positioning tool for the battery pole and the test connecting piece provided by an embodiment of the utility model is exploded Figure 2 .

[0018] Figure 3 A schematic diagram of the use and assembly of a welding auxiliary positioning tool for a battery cell pole and a test connection piece provided in one embodiment of the utility model Figure 1 .

[0019] Figure 4 A schematic diagram of the use and assembly of a welding auxiliary positioning tool for a battery cell pole and a test connection piece provided in one embodiment of the utility model Figure 2 .

[0020] Figure 5 A schematic diagram of the use and assembly of a welding auxiliary positioning tool for a battery cell pole and a test connection piece provided in one embodiment of the utility model Figure 3 .

[0021] Description of reference numerals:

[0022] 1-rear baffle, 11-rear baffle threaded hole, 12-rear baffle slide rod fixing hole;

[0023] 2- rear screw;

[0024] 3-lower limit seat, 31-semicircular hole groove of lower limit seat;

[0025] 4-rear shift plate, 40-rear shift plate slide rod hole, 41-second groove, 42-second semicircular hole groove, 43-rear side clamping surface of battery cell, 44-slide rod mounting surface, 45-transition connection inclined surface;

[0026] 5-upper limit seat, 51-semicircular hole groove of upper limit seat;

[0027] 6-Front screw;

[0028] 7-positioning seat, 71-limiting groove, 72-through hole, 73-top groove, 74-first groove, 75-first semicircular hole groove;

[0029] 8-front baffle, 81-front baffle threaded hole, 82-front baffle slide rod fixing hole;

[0030] 9-forward plate, 90-forward plate slide rod hole, 91-forward plate threaded hole, 92-cell front clamping surface, 93-connection inclined surface, 94-slide rod installation vertical surface;

[0031] 10- Slider;

[0032] 100-battery cell, 110-battery cell pole;

[0033] 200 - bus, 210 - bus vertical portion, 220 - bus horizontal portion, 230 - bus center hole. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] like Figures 1 to 5 As shown, the welding auxiliary positioning tooling for the battery cell pole and the test connecting piece of the embodiment of the utility model includes a positioning seat 7, the surface of the positioning seat 7 has a through hole 72 which passes through from top to bottom for convenient welding, and a limiting groove 71 which cooperates with the horizontal part 220 of the bus 200 is formed below the through hole 72; it also includes a battery cell clamping device detachably connected to the positioning seat 7, and the positioning seat 7 is fixed to the battery cell 100 through the clamping device.

[0036] In one embodiment, the battery cell clamping device includes two sliding rods 10 symmetrically arranged and assembled on the front and rear opposite sides of the positioning seat 7, the outer side of the rear side of the positioning seat 7 is connected to the rear plate 4 and the rear baffle plate 1 through the two sliding rods 10, the rear plate 4 is located between the rear baffle plate 1 and the positioning seat 7, and the outer side of the front side of the positioning seat 7 is connected to the front plate 9 and the front baffle plate 8 through the two sliding rods 10, the front plate 9 is located between the front baffle plate 9 and the positioning seat 7, the front plate 9 is connected to the front screw 6, and the rear plate 4 is connected to the rear screw 2; when the forward plate 9 and the rear plate 4 are moved into place, they can be clamped on the front and rear large surfaces of the battery cell 100.

[0037] In a preferred embodiment, the rearward plate 4 has a battery cell rear side clamping surface 43 and a slide bar mounting surface 44 for sliding contact with the slide bar, and the slide bar mounting surface 44 is connected to the battery cell rear side clamping surface 43 via a downward and outward transition connection slope 45.

[0038] In a preferred embodiment, the forward moving plate 9 has a battery cell front side clamping surface 92 , and the battery cell front side clamping surface 92 is connected to a slide rod installation vertical surface 94 via an upward and outward connecting inclined surface 93 .

[0039] Among them, a cell pole 110 to be welded with a busbar is respectively arranged at the left and right ends of the top of the battery cell 100 to be welded. When a cell pole 110 needs to be welded with a busbar, the cell pole 110 is located at the bottom of the positioning seat 7. When in use, the positioning seat 7 is set on the top of the battery cell 100, and the busbar horizontal part 220 of the L-shaped busbar 200 for connecting the pole is inserted into the limiting groove 71 at the bottom of the positioning seat 7, located on the surface of the battery pole 110, and the busbar vertical part 210 is opposite to the rear moving plate 4; the front screw and the rear screw are used to drive the front moving plate 9 and the rear moving plate 4 to move, so as to clamp the two large surfaces of the battery cell and realize clamping and fixing with the battery cell.

[0040] More preferably, a top groove 73 is formed above the through hole 72, so as to form a retaining edge on three sides of the through hole to prevent the splashing of welding sparks.

[0041] In a preferred embodiment, the forward plate 9 and the rear plate 4 are symmetrically distributed on the left and right; a pair of laterally distributed slide bars 10 are respectively provided on the front and rear sides of the positioning seat 7, and each pair of slide bars 10 are respectively slidably connected with the forward plate slide bar holes 90 and the rear plate slide bar holes 40 at the upper ends of the forward plate 9 and the rear plate 4. The forward plate 9 and the rear plate 4 can be relatively clamped by the action of the front screw and the rear screw, so that they can be fixed on the outer surface of the battery cell, and can be suitable for a variety of battery cell sizes.

[0042] The rear baffle 1 and the front baffle 8 are formed with slide rod installation fixing holes, which are the rear baffle slide rod fixing hole 12 and the front baffle slide rod fixing hole 90 , respectively, which are connected and fixed to the corresponding slide rods.

[0043] In one embodiment, a forward moving plate threaded hole 91 is horizontally penetrated through the upper end of the forward moving plate 9, and a front baffle plate threaded hole 81 is centrally located on the front baffle plate 8, so that the front screw 6 can pass through the front baffle plate 8 and the forward moving plate 9, and then the front moving plate 9 can be driven to move forward and backward along the corresponding sliding rod 10 by rotating the front screw 6.

[0044] Preferably, the rear end of the front screw 6 is positioned and limited by the upper limit seat 5 to the upper surface of the positioning seat 7, such as a first groove 74 formed on the upper surface of the positioning seat, the first groove has a first semicircular hole groove 75 on the middle surface, and screw holes are provided on both sides of the first semicircular hole groove, and the bottom surface of the upper limit seat 5 has an upper limit seat semicircular hole groove 51 that matches the first semicircular hole groove 75. After the two are matched and connected, a first rotation limiting blind hole that matches the rear end of the front screw 6 is formed. In one embodiment, the upper limit seat 5 is connected to the first groove 74 by screws. After each welding operation is completed, it is only necessary to loosen the front screw 6 and control the tightness of the forward plate 9 to complete the replacement.

[0045] The two slide bars 10 on the rear side of the positioning seat 7 penetrate the slide bar hole 40 of the rear plate 4 at the upper end, and the rear screw rod 2 passes through the rear plate threaded hole 11 located at the lower center of the rear baffle 1, and the front end is against the rear plate 4, so that the rear screw rod 2 can drive the rear plate 4 to move forward and backward along the slide bar 10 when it is rotated. The rear baffle 1 has a rear baffle threaded hole 11, which is convenient for the rear screw rod 2 to drive the rear plate 4 to move forward and backward along the slide bar 10 after passing through the rear baffle 1, and the operation is completed after the rear plate 4 is clamped at the specified position by the screw rod 2.

[0046] Preferably, the front end of the rear screw 2 is positioned and limited to the lower surface of the rearward plate 4 by the lower limit seat 3, such as a second groove 41 is formed on the bottom surface of the rearward plate 4, the second groove has a second semicircular hole groove 42 on the middle surface, and the bottom surface of the lower limit seat 3 has a lower limit seat semicircular hole groove 31 that matches the second semicircular hole groove. After the two are connected, a second rotation limit blind hole that matches the rear end of the rear screw is formed. In one embodiment, the lower limit seat 3 is connected to the second groove 41 by screws, and there are screw holes on both sides of the second groove. The lower limit seat is a T-shaped structure, and the shape of the second groove 41 matches it.

[0047] In some embodiments, the positioning seat 7 is an insulating positioning seat, and its material is any one of resin, rubber, engineering plastics, polypropylene, polyethylene, and polytetrafluoroethylene; the front plate 9 and the rear plate 4 are insulating plates, and their materials are any one of resin, rubber, engineering plastics, polypropylene, polyethylene, and polytetrafluoroethylene. The material of the rear screw 2 and the front screw 6 can be any one of aluminum, aluminum alloy, stainless steel, iron nickel plating, resin, rubber, engineering plastics, polypropylene, polyethylene, and polytetrafluoroethylene; the material of the sliding rod 10 is any one of aluminum, aluminum alloy, stainless steel, iron nickel plating, resin, rubber, engineering plastics, polypropylene, polyethylene, and polytetrafluoroethylene, and the material of the upper limit seat 5 and the lower limit seat 3 can be any one of resin, rubber, engineering plastics, polypropylene, polyethylene, and polytetrafluoroethylene.

[0048] The operation process of the utility model is described below. Figure 3 , Figure 4 as well as Figure 5 shown.

[0049] The first step is to insert the horizontal part 220 of the bus 200 to be welded into the limiting groove at the bottom of the positioning seat 7, then position the welding eye, align it with a battery pole 110 on the top of the battery cell 100, and place it at the welding position so that the position of the bus center hole 230 coincides with the center point of the battery pole 110, and press the two ends of the upper surface of the positioning seat 7 with your fingers to make the bottom welding area of ​​the internal bus fit against the surface of a battery pole 110 on the top of the battery cell 100 to keep it fixed.

[0050] In the second step, while the positioning seat and the busbar are kept in contact with the surface of the battery cell pole, the rear screw 2 and the front screw 6 are pre-tightened on the forward plate 9 and the rearward plate 4 respectively so that their facing surfaces are in contact with the outer wall of the battery cell 100.

[0051] In the third step, the testing staff presses the positioning seat 7 and applies downward pressure, thereby driving the forward plate 9, the rear plate 4, the front baffle 8, the rear baffle 1, the positioning seat 7 and the bus on the positioning seat 7 to be pressed down, so that the bus is completely in contact with the battery cell pole 110 of the battery cell 100, and at the same time tightens the rear screw 2 and the front screw 6, so that the forward plate 9 and the rear plate 4 are completely attached to the outer wall of the battery cell 100, thereby completing the preliminary welding preparation work of the single battery cell pole before welding the bus.

[0052] The utility model provides a welding auxiliary positioning tool for a battery cell pole and a test connecting piece, and its positioning seat is replaceable, so that it can be used to fix busbars of various battery cell models, thereby providing assistance for testing operations of more battery cell models, can be applied to various types of battery cells that require welding busbars, can be used repeatedly, and can be suitable for welding busbars of various battery cell models.

[0053] The utility model provides a welding auxiliary positioning tool for a battery cell pole and a test connecting piece, which is used in the preparation process before busbar welding on a single battery cell. By adjusting the front and rear moving plates to clamp each other, the inherent tape fixing method is avoided, the fixing strength is improved, and the residual glue cleaning operation after welding is avoided. It is convenient to carry out the next welding operation after disassembly, which can improve the welding consistency between the single battery cell pole and the busbar, improve the welding effect, reduce the current impedance in the test, and reduce the current impedance in the later test operation.

[0054] The welding auxiliary positioning tooling for the battery cell pole and the test connecting piece provided by the utility model performs positioning through the welding hole of the positioning seat, thereby increasing the positioning accuracy. The cooperation of the sliding rod and the front and rear moving plates can efficiently complete the preparatory work in the early stage of welding, reduce the overall duration of the welding operation, and ensure that the welding operation time is reduced.

[0055] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding auxiliary positioning tool for the battery cell pole and the test connecting piece, characterized in that: It includes a positioning seat, the surface of which has a through hole that runs through from top to bottom and is convenient for welding, and a limiting groove that matches the horizontal part of the bus is formed below the through hole; the welding auxiliary positioning tooling for the battery cell pole and the test connecting piece also includes a battery cell clamping device that is detachably connected to the positioning seat, and the positioning seat is fixed to the battery cell through the battery cell clamping device.

2. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 1, characterized in that: The battery cell clamping device includes: sliding rods symmetrically arranged on the front and rear sides of the positioning seat, the outer side of the rear side of the positioning seat is connected to the rear moving plate and the rear baffle plate through the sliding rod, and the rear moving plate is located between the rear baffle plate and the positioning seat; the outer side of the front side of the positioning seat is connected to the front moving plate and the front baffle plate through the sliding rod, the front moving plate is located between the front baffle plate and the positioning seat, the front moving plate is connected to the front screw driving the forward moving plate to move, and the rear moving plate is connected to the rear screw driving the rear moving plate to move; when the forward moving plate and the rear moving plate are moved into place, they can be clamped on the front and rear large surfaces of the battery cell.

3. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 2, characterized in that: A threaded hole is horizontally passed through the upper part of the forward moving plate, and a central threaded hole is provided on the front baffle plate. After the front screw passes through the threaded holes of the front baffle plate and the forward moving plate, its rear end is rotationally connected to the positioning seat, and the front screw can be driven to move forward and backward along the sliding rod by rotating the front screw.

4. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 3 is characterized in that: The rear end of the front screw is restricted and positioned by the upper limit seat in a first rotation limiting blind hole formed by the first limiting groove on the upper surface of the positioning seat and the upper limit seat groove of the upper limit seat.

5. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 2, characterized in that: The rear screw rod passes through the lower central threaded hole of the rear baffle plate, and the front end thereof abuts against the rear shift plate. Rotating the rear screw rod can drive the rear shift plate to move forward and backward along the slide rod.

6. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 4, characterized in that: The rear end of the rear screw is limited and positioned by a lower limit seat in a second rotation limit blind hole formed by abutting between a second limit groove on the lower surface of the rearward moving plate and a lower limit seat groove of the lower limit seat.

7. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 2, characterized in that: The rearward shifting plate has a clamping surface at the rear side of the battery cell and a slide bar mounting surface for slidingly contacting the slide bar, and the slide bar mounting surface is connected to the clamping surface at the rear side of the battery cell via a downward and outward transition connection inclined surface.

8. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 2, characterized in that: The forward moving plate has a battery core front side clamping surface, and the battery core front side clamping surface is connected to a slide rod installation vertical surface through an upward and outward connecting inclined surface.

9. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 2, characterized in that: The forward plate and the rearward plate are prefabricated with slide rod holes matched with the slide rod.

10. The welding auxiliary positioning tool for the battery cell pole and the test connecting piece according to claim 2, characterized in that: The front baffle plate and the rear baffle plate each have a fixing hole fixedly connected to the end of the slide rod.

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