Power battery adapter piece welding jig

Abstract

The utility model discloses a power battery adapter piece welding jig which comprises a base plate and a battery core pressing plate hinged to the base plate, and the base plate comprises a battery core positioning area with the positioning interval capable of being adjusted in size. According to the power battery adapter plate welding jig, the base plate comprises the battery core positioning area with the adjustable positioning interval, so that the power battery adapter plate welding jig can be suitable for welding square power batteries of different sizes and models, and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of battery welding jigs, in particular to a welding jig for a power battery adapter. Background Art

[0002] With the worldwide energy shortage and environmental protection requirements, environmentally friendly and energy-saving electric vehicles have become the development direction of the automotive industry. The power source of electric vehicles comes from new energy power batteries. New energy power batteries are welded with connecting plates. During the battery production process, welding is required, that is, welding the connecting plates to the batteries.

[0003] When welding the battery connector, welding tools or jigs are needed to position or press the battery before welding. Under the existing technology, the corresponding welding jigs for the connectors are not convenient for compatibility with lithium batteries of different specifications during use, resulting in the need for workers to be equipped with tools of different specifications, resulting in excessive cost investment; in view of the problems exposed during the use of the current welding tools, it is necessary to improve and optimize the structure of the welding tools. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies and defects of the prior art and to provide a welding fixture for a power battery adapter.

[0005] A power battery adapter welding fixture comprises a chassis and a battery cell pressing plate hinged to the chassis, wherein the chassis comprises a battery cell positioning area with an adjustable positioning interval.

[0006] Wherein, a cell stopper with an adjustable position is arranged in the cell positioning area, and the size of the cell positioning area can be adjusted by moving and adjusting the position of the cell stopper.

[0007] The bottom surface of the battery cell positioning area is provided with at least two rows of position adjustment holes which are arranged in a straight line and spaced apart from each other, and the battery cell stopper is detachably connected to the position adjustment holes by bolts.

[0008] Wherein, a battery cell pad is arranged on the inner surface of the battery cell pressing plate.

[0009] There are two battery cell pressing plates and two battery cell positioning areas, and one battery cell pressing plate corresponds to one battery cell positioning area.

[0010] Wherein, welding through holes for the welding head to pass through for welding are formed on the battery cell pressing plate and the battery cell pad.

[0011] Wherein, a cover plate pad is arranged between the two battery cell positioning areas.

[0012] Wherein, cover plate pressing plates are arranged on both sides of the cover plate pad in the width direction, and there are two cover plate pressing plates on each side in the width direction.

[0013] A dust removal cover is arranged above the cover plate pad, a dust removal nozzle is provided at the bottom of the dust removal cover, the upper end is closed, and a dust removal interface of a dust removal pipe is provided on the side.

[0014] Wherein, handles are arranged on the upper ends of both sides in the width direction of the chassis.

[0015] The power battery adapter welding fixture of the utility model has a chassis including a battery cell positioning area with an adjustable positioning interval, and therefore can be adapted to welding square power batteries of different sizes and models and is widely applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the power battery adapter welding fixture of the present utility model.

[0017] Figure 2 This is a front view of the power battery adapter welding fixture of the present utility model.

[0018] Figure 3 This is an axonometric view of the power battery adapter welding fixture of the utility model after the battery cell pressing plate is opened.

[0019] Figure 4 This is the front view of the power battery adapter welding fixture of the utility model after opening the battery cell pressing plate.

[0020] Figure 5 This is another axonometric view of the power battery adapter welding fixture of the utility model after the battery cell pressing plate is opened.

[0021] Figure 6 This is a side view of the power battery adapter welding fixture of the utility model after opening the battery cell pressing plate.

[0022] Figure 7 This is a partially enlarged view of the power battery adapter welding fixture of the utility model.

[0023] Figure 8 , Fig. 9 as well as Fig.10 , Fig.11 The following are respectively a side view, a bottom view, a side view and an axonometric view of the dust removal cover of the power battery adapter welding fixture of the present invention.

[0024] Fig.12 This is a schematic diagram of positioning the battery cell using the power battery adapter welding fixture of the present invention. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 1 to 12 As shown, the power battery connecting piece welding fixture of the embodiment of the utility model comprises a chassis 3 and a battery cell pressing plate 2 hinged to the chassis, wherein the chassis 2 comprises a battery cell positioning area with an adjustable positioning interval. Since the chassis comprises a battery cell positioning area with an adjustable positioning interval, it can be widely used to weld square power batteries of different sizes, avoids frequent replacement of fixtures due to production changes, and saves equipment costs.

[0027] In some embodiments, a position-adjustable cell stopper 4 is provided in the cell positioning area. By moving and adjusting the position of the cell stopper 4, the size of the cell positioning area can be adjusted. By moving the cell stopper 4, the size of the cell positioning area can be adjusted very conveniently. Adjusting the left and right positions of the cell stopper 4 can achieve high compatibility with different cell models.

[0028] In some embodiments, the bottom surface of the cell positioning area is provided with at least two rows of position adjustment holes 31 arranged in a straight line and spaced apart, the cell stopper 4 has a matching hole, and the cell stopper 4 is connected to the position adjustment hole by bolts to form a detachable connection. Of course, the cell stopper can also be moved and adjusted in other ways, not limited to this embodiment.

[0029] In some embodiments, a cell pad 5 is arranged on the inner surface of the cell pressing plate, which is fixed to the surface of the cell pressing plate, such as by screw connection, and is detachable to facilitate replacement of cell pads of different sizes to adapt to the compatible compression of cells of different models, thicknesses or heights. The cell pad 5 can press the cell 20 on the upper surface when welding and positioning the cell.

[0030] In some implementation schemes, there are two battery cell pressing plates 2 and two battery cell positioning areas, and one battery cell pressing plate corresponds to one battery cell positioning area. In this way, one jig can weld two battery cells 20 at the same time, thereby improving the use efficiency of the jig.

[0031] In some embodiments, the battery cell pressing plate and the battery cell pad are formed with welding through holes 21 for the welding head to pass through for welding. After the battery cell and the cover plate are pressed by a jig and placed behind a welding machine, the welding head of the welding machine enters the welding through holes 21 to weld the connecting pieces after the battery cell cover plate 22 and the tab 21 are welded.

[0032] In some embodiments, a cover plate pad 9 is arranged between the two battery cell positioning areas. The cover plate pad 9 is used to support or buttress the battery cell cover plate 22 to be welded. During welding, the battery cell cover plate is placed thereon and fixed.

[0033] In some embodiments, in order to press the cover plate and prevent it from moving during welding, cover plate pressing plates 8 are arranged on both sides of the cover plate pad in the width direction. Preferably, there are two cover plate pressing plates on each width direction side, a total of four, which together press the battery cover plate 22. In some embodiments, the cover plate pressing plate 8 is rotatable, such as it can be connected to the rotating block 34 in the middle of the front side of the chassis 3, such as being fixed to the rotating block 34, and the rotating block is connected to the fixed block 36 through a hinge 35. The rotating block can rotate, such as Figure 7 As shown, the two cover plate pressing plates 8 fixed thereon are driven to rotate outward and open, and after the cell cover plate is placed on the cover plate pad 9, they are rotated inward and pressed on the cell cover plate 22.

[0034] In some embodiments, a dust removal cover 1 is arranged above the cover plate pad, and a dust removal nozzle 11 is provided at the bottom of the dust removal cover, the upper end is closed, and a dust removal interface 12 of a dust removal pipe is provided on the side. The dust removal nozzle 11 and the dust removal interface 12 are connected through a dust removal cavity. When in use, the dust removal cover 1 is placed above the cover plate pad 9, the dust removal nozzle 11 is aligned with the welding point, and the dust removal pipe is connected to the dust removal interface 12. After the dust removal equipment is started, negative pressure is generated, which can collect dust and welding slag generated during welding to avoid contaminating the product.

[0035] In some embodiments, handles 7 are arranged on the upper ends of both sides in the width direction of the chassis, preferably, arranged on the U-shaped enclosure 32 on the outside of the chassis 3, so as to facilitate the movement of the jig, such as putting it into a welding machine or taking it out of a welding machine.

[0036] In some implementation schemes, the battery cell pressure plate 2 is hinged to the chassis 3 by hinges or hinges, and a buckle 6 is used at the front end to achieve locking and fixation. Two buckles 6 are arranged in each battery cell positioning area to ensure uniform pressure is applied to the battery cell surface. One buckle is located on the outer surface of the front side plate of the U-shaped enclosure 32, and the other buckle is located on the outer surface of the top positioning plate 33 on the side of the battery cell close to the battery cell ear side.

[0037] When in use, adjust the battery cell block 4 and the battery cell pad 5 to a suitable distance, place the battery cell 20 after ultrasonic final welding on the battery cell fixed area of ​​the chassis 3, open the cover pressing plate 8, place the battery cell cover 22 on the cover pad 9, close the cover pressing plate 8 to prevent the battery cell cover from being misplaced, and after the cover pressing plate is tightened, the adapter plate after the pole ear welding is aligned with the battery cell cover welding point position; then, close the battery cell pressing plate 2, lock the buckle 6, and then place the power battery connecting piece welding jig into the soft connection welding machine for semi-automatic laser welding.

[0038] It should be noted that when the power battery connecting piece welding jig of the utility model is used, it is placed on a welding machine. Specifically, after the battery cell and the cover plate of the jig are clamped to position the battery cell and the connecting piece, the power battery connecting piece welding jig is placed into the soft connection welding machine for semi-automatic laser welding.

[0039] From the above description, it can be seen that the power battery adapter welding jig of the utility model can be widely used for welding square power batteries of different sizes and models because its chassis includes a battery cell positioning area with an adjustable positioning interval. The power battery connecting piece welding jig of the utility model is applied to the laser welding of the adapter. During welding, the laser is used to perform laser welding on the adapter and the battery cover. The welding jig also has a dust removal function.

[0040] In summary, the power battery connecting piece welding fixture of the utility model has the following characteristics:

[0041] 1. High versatility: It can be applied to most battery models, which can expand the application scope of battery welding tools, reduce the number of tool changes, and save production costs; 2. High positioning: By setting up corresponding positioning mechanisms, the battery and connecting piece can be effectively positioned to avoid the risk of battery cell dislocation during welding.

[0042] The above shows and describes the basic principle 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.

[0043] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0044] 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 power battery adapter welding fixture, characterized in that: It includes a chassis and a battery cell pressing plate hinged to the chassis, the chassis includes a battery cell positioning area with an adjustable positioning interval; a battery cell pad is arranged on the inner surface of the battery cell pressing plate, and welding through holes for welding heads to pass through for welding are formed on the battery cell pressing plate and the battery cell pad.

2. The power battery adapter welding fixture according to claim 1, characterized in that: A cell stopper with an adjustable position is arranged in the cell positioning area, and the size of the cell positioning area can be adjusted by moving and adjusting the position of the cell stopper.

3. The power battery adapter welding fixture according to claim 2, characterized in that: The bottom surface of the battery cell positioning area is provided with at least two rows of position adjustment holes which are arranged in a straight line and spaced apart from each other, and the battery cell stopper is detachably connected to the position adjustment holes by bolts.

4. The power battery adapter welding fixture according to claim 1, characterized in that: There are two battery cell pressing plates and two battery cell positioning areas, and one battery cell pressing plate corresponds to one battery cell positioning area.

5. The power battery adapter welding fixture according to claim 1, characterized in that: A cover plate pad is arranged between the two battery cell positioning areas.

6. The power battery adapter welding jig according to claim 5, characterized in that: Cover plate pressing plates are arranged on both sides of the cover plate pad in the width direction.

7. The power battery adapter welding jig according to claim 6, characterized in that: There are two cover plate pressing plates on each width direction side.

8. The power battery adapter welding fixture according to claim 5, characterized in that: A dust removal cover is arranged above the cover plate pad.

9. The power battery adapter welding fixture according to claim 8, characterized in that: The bottom of the dust removal cover is provided with a dust removal nozzle, the upper end is closed, and the side is provided with a dust removal interface of the dust removal pipe.

10. The power battery adapter welding fixture according to claim 1, characterized in that: Handles are arranged on the upper ends of both sides in the width direction of the chassis.

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