Spot welding device

Abstract

The utility model provides a spot welding device which can improve the positioning accuracy during spot welding and improve the welding efficiency. The spot welding device is provided with: a jig in which a tank for accommodating a battery is provided; the electrode bar is clamped above the jig by the clamp; and a jig cover plate fixed to the electrode bar, the jig cover plate having an opening in the bottom surface thereof, the opening size of the opening being larger than the size of the groove in the jig, and positioning between the battery accommodated in the jig and the electrode bar via the opening.

Description

Technical Field

[0001] This utility model relates to a spot welding device. Background Technology

[0002] With the development of electronic technology and the popularization of electronic devices, the demand for batteries in electronic products such as tablets, computers and mobile phones has also exploded.

[0003] Cell welding is a crucial process in battery assembly, requiring the welding of metal components such as terminals and connectors to the positive and negative electrodes of the cell. However, existing battery spot welding processes suffer from low welding efficiency and inconsistent weld quality.

[0004] Specifically, in existing technology, the battery is placed inside a fixture, and the electrode terminals are placed inside an electrode rod. The fixture is then positioned using blocks or similar means to hold the battery below the electrode rod for spot welding. However, since positioning relies solely on blocks, misalignment is prone to occur, leading to misalignment of the electrode terminals during welding. Furthermore, to avoid misalignment, the position of the blocks must be precisely adjusted, resulting in low welding efficiency.

[0005] In view of the above-mentioned technical problems in the prior art, there is an urgent need for a spot welding device that can improve the positioning accuracy and welding efficiency during spot welding. Utility Model Content

[0006] The inventor of this utility model has conducted in-depth research and proposed a spot welding device that can improve the positioning accuracy and welding efficiency during spot welding.

[0007] The technical solution of this utility model is as follows.

[0008] This utility model provides a spot welding device, characterized in that it comprises: a fixture having a slot for accommodating a battery; an electrode rod being held above the fixture by a clamp; and a fixture cover plate being fixed to the electrode rod, the bottom surface of the fixture cover plate having an opening, the opening size of which is larger than the size of the slot in the fixture, and the battery being positioned between the battery accommodated in the fixture and the electrode rod is positioned through the opening.

[0009] Furthermore, preferably, in the spot welding device, the opening includes a guide portion and a columnar portion connected to the guide portion, wherein the opening size of the opening gradually decreases as it extends toward the inside of the fixture cover plate, and the size of the columnar portion matches the size of the battery housed in the fixture.

[0010] Furthermore, preferably, in the spot welding device, the guide portion is frustum-shaped, and the columnar portion is cylindrical, and is connected to the top surface of the frustum of the guide portion.

[0011] Furthermore, preferably, in the spot welding apparatus, the lower end of the electrode rod is flush with the top surface of the columnar portion of the opening, and the lower end of the electrode rod has a groove for accommodating electrode terminals.

[0012] Furthermore, preferably, in the spot welding apparatus, the fixture cover is removable relative to the electrode rod by means of an internal locking screw.

[0013] Furthermore, preferably, in the spot welding device, a magnetic attraction mechanism is provided in the groove at the lower end of the electrode rod for magnetically attracting the electrode terminal.

[0014] Furthermore, preferably, in the spot welding device, the fixture cover plate also has at least one side opening, and the side opening communicates with the opening portion.

[0015] Furthermore, preferably, the spot welding device also includes a stop block, which is placed on a horizontal surface on which the fixture is placed, and the stop block is used to position the battery housed in the fixture between the battery and the electrode rod.

[0016] The above spot welding device can improve the positioning accuracy and welding efficiency during spot welding. Attached Figure Description

[0017] Figure 1 A perspective view of a spot welding device 100 according to one embodiment of the present invention is shown.

[0018] Figure 2 An exploded view of a spot welding apparatus 100 according to one embodiment of the present invention is shown schematically.

[0019] Figure 3 A cross-sectional perspective view of a spot welding device 100 according to one embodiment of the present invention is shown schematically.

[0020] Figure 4 A front sectional view of a spot welding apparatus 100 according to one embodiment of the present invention is shown schematically.

[0021] Figure 5 To illustrate, Figure 4 The enlarged partial view of the area circled by the dashed circle. Detailed Implementation

[0022] The embodiments of this utility model will now be described using the accompanying drawings. However, various limitations, technically preferred for carrying out this utility model, are added to the embodiments described below. Therefore, the scope of the technology disclosed herein is not limited to the following embodiments and the illustrated examples. Furthermore, the sizes, shapes, and proportions in the illustrated examples are merely illustrative and do not represent specific sizes, shapes, and proportions. In addition, in the drawings, common structures in the embodiments are labeled with the same symbols, and repeated descriptions are omitted; and for the same structures, the illustration of reference numerals is sometimes omitted.

[0023] The following is for reference Figures 1-5 This describes the specific structure of the spot welding device 100. For example... Figure 1 As shown, the spot welding apparatus 100 includes a substrate 110, a fixture 120, a fixture cover plate 130, an electrode rod 140, a clamp 150, and a stop 160. Figure 1 The image shows the state after the battery 200 placed in the fixture 120 is engaged with the fixture cover plate 130, that is, the state during welding performed by the spot welding device 100.

[0024] The fixture 120 is placed on the substrate 110 and locked in place by the stop 160. That is, the stop 160 is a mechanism for positioning the fixture 120 on a horizontal plane. For example, the fixture 120 is pushed and locked in place by a mechanism (not shown), thereby clamping the fixture 120 and ensuring the stability of the spot welding. An L-shaped stop 160 is shown in the figure, but the shape of the stop 160 is not limited to this.

[0025] Furthermore, the fixture 120 includes a groove 121 for accommodating the battery 200. The dimensions of the groove 121 are, for example, matched to the dimensions of the battery 200 to be welded; that is, the shape of the groove 121 is the same as the cross-sectional shape of the battery 200 to be welded, and the cross-sectional area of ​​the groove 121 is approximately equal to or slightly larger than the cross-sectional area of ​​the battery 200. The battery 200 is, for example, a cylindrical battery. Alternatively, a fastening mechanism may be provided within the groove 121 to fasten the battery 200 within the groove 121 in response to downward pressure from the battery 200.

[0026] The fixture cover 130 is fixed to the electrode rod 140. Specifically, the fixture cover 130 is, for example, cylindrical, with a through hole on its top surface for inserting the electrode rod 140. After the electrode rod 140 is inserted into the fixture cover 130, an inner locking bolt 133 passes through the side through hole of the fixture cover 130 and locks onto the electrode rod 140, thereby fixing the fixture cover 130 to the electrode rod 140. By attaching and detaching the inner locking bolt 133, the fixture cover 130 can be freely attached to and detached from the electrode rod 140, thus allowing for replacement of the corresponding fixture cover 130 to match different battery 200 models. Furthermore, the connection method between the fixture cover 130 and the electrode rod 140 is not limited to bolt fixing; for example, it can also be snap-fit ​​fixing, or the fixture cover 130 and the electrode rod 140 can be integrally formed.

[0027] In addition, such as Figure 2 As shown, an opening 131 is provided inside the bottom surface of the fixture cover plate 130; the detailed structure of the opening 131 will be described later. Furthermore, as... Figure 2 As shown, the side of the fixture cover plate 130 has at least one side opening 132 that communicates with the opening 131. Through the side opening 132, the size of the opening 131 and the positional relationship between the battery 200 and the opening 131 can be visually confirmed from the side of the fixture cover plate 130.

[0028] like Figure 3 As shown, the opening size of the opening 131 on the bottom surface of the fixture cover 130 is larger than the size of the groove 121 in the fixture 120. The opening 131, extending upwards from the bottom surface of the fixture cover 130, includes a guide portion 1311 and a columnar portion 1312. In the guide portion 1311, its sidewalls are sloped, so that the opening size of the opening 131 gradually decreases upwards from the bottom surface of the fixture cover 130, and the top surface size of the guide portion 1311 matches the size of the battery 200 housed in the fixture 120. The guide portion 1311 is, for example, frustum-shaped. The columnar portion 1312 is connected to the top surface of the guide portion 1311, and the size of the columnar portion 1312 matches the size of the battery 200 housed in the fixture 120. The columnar portion 1312 is, for example, cylindrical.

[0029] Electrode rod 140 is connected to a power source (not shown). By turning on the power, electrode rod 140 discharges, enabling the electrode terminals to be soldered to the battery cell. Figures 2-3 As shown, the electrode rod 140 includes a conductive rod 141 and an insulating shell 142. The conductive rod 141 is inserted into the interior of the insulating shell 142. Furthermore, as... Figure 2 As shown, the insulating shell 142 is, for example, composed of two cylinders, one larger than the other. Figure 5As shown, when the electrode rod 140 is inserted into the through hole on the top surface of the fixture cover plate 130, the stepped portion between the two cylinders of the insulating shell 142 abuts against the stepped portion inside the through hole on the top surface of the fixture cover plate 130, thereby inserting the electrode rod 140 into a suitable position in the vertical direction. This suitable position is, for example, when the lower end of the conductive rod 141 is flush with the top surface of the columnar portion 1312 of the opening 131 of the fixture cover plate 130.

[0030] At the lower end of the conductive rod 141, there is an inwardly recessed groove 1411 for accommodating the electrode terminal 210 to be welded. For example, a magnetic attraction mechanism 1412, such as a magnet, is provided in the groove 1411. The magnetic attraction mechanism 1412 attracts the electrode terminal 210 to be welded and fixes it in the groove 1411 within the conductive rod 141 by the magnetic attraction force from the magnetic attraction mechanism 1412. Thus, the portion of the electrode terminal 210 to be welded, which is magnetically attracted in the groove 1411 by the magnetic attraction mechanism 1412, abuts against the lower end of the electrode rod 140, facilitating welding. Furthermore, since the electrode rod 140 is fixed to the fixture cover plate 130 such that its lower end is flush with the top surface of the columnar portion 1312 of the opening 131 as described above, the portion of the electrode terminal 210 to be welded is positioned at the top surface of the columnar portion 1312.

[0031] The clamp 150 is used to hold the electrode rod 140 and secure it. Furthermore, the clamp 150 may include, for example, a downward drive mechanism to control the vertical movement of the electrode rod 140, thereby aligning the fixture cover plate 130 with the fixture 120 below which houses the battery 200. Additionally, the clamp 150 may also include, for example, a lateral displacement mechanism or a rotational displacement mechanism to adjust the position of the electrode rod 140 in the horizontal plane; that is, the clamp 150 may also function as a positioning mechanism for the electrode rod 140. The illustration shows an example where the clamp 150 includes a clamping portion for holding the conductive rod 141 and a clamping portion for holding the insulating shell 142, but it may also have only one of these clamping portions.

[0032] During the welding operation, the battery 200 is first fixed to a fixture 120 that matches the battery model, and the fixture 120 is then secured to the stop block 160. Next, the fixture cover plate 130 is fixed to the electrode rod 140, and the electrode terminal 210 is magnetically attracted to the groove 1411 of the electrode rod 140. Then, the electrode rod 140 is moved downwards by the clamp 150, causing the battery 200 to be inserted into the opening 131 of the fixture cover plate 130. During this process, the opening 131 (specifically, the guide portion 1311) absorbs any positioning deviation between the electrode rod 140 and the battery 200, ensuring that the electrode terminal 210 is accurately abutted against the spot welding position in the battery 200. Afterwards, the electrode rod 140 is energized, and welding is performed.

[0033] In the above-described embodiments, the spot welding device 100 absorbs the positioning deviation between the electrode rod 140 and the battery 200 through the opening 131 (specifically, the guide portion 1311) in the fixture cover plate 130 fixed to the electrode rod 140, thereby improving the positioning accuracy during spot welding and increasing the welding efficiency.

[0034] The embodiments of this utility model have been described above with reference to the accompanying drawings. The embodiments described above are merely specific examples of this utility model, used to understand this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various modifications, combinations, and reasonable omissions of elements in the embodiments based on the technical concept of this utility model, and the resulting methods are also included within the scope of this utility model.

Claims

1. A spot welding device, characterized in that, have: A fixture, which includes a slot for holding batteries; The electrode rod is held above the fixture by a clamp; and The fixture cover plate is fixed to the electrode rod. The fixture cover plate has an opening on its bottom surface, the size of which is larger than the size of the groove in the fixture. Positioning of the battery, which is housed in the fixture, between the electrode rod is achieved through the opening.

2. The spot welding device as described in claim 1, characterized in that, The opening includes a guide portion and a columnar portion connected to the guide portion. In the guide portion, the opening size of the opening gradually decreases as it extends inward toward the fixture cover plate. The dimensions of the columnar portion are matched to the dimensions of the battery housed in the fixture.

3. The spot welding device as described in claim 2, characterized in that, The guide section is frustum-shaped. The columnar portion is cylindrical and is connected to the top surface of the frustum of the guide portion.

4. The spot welding device as described in claim 3, characterized in that, The lower end of the electrode rod is flush with the top surface of the columnar portion of the opening. The lower end of the electrode rod has a groove for accommodating the electrode terminals.

5. The spot welding device as described in claim 4, characterized in that, The fixture cover is removable from the electrode rod via an internal locking screw.

6. The spot welding device as described in claim 5, characterized in that, A magnetic attraction mechanism is provided in the groove at the lower end of the electrode rod for magnetically attracting the electrode terminal.

7. The spot welding device as described in claim 6, characterized in that, The fixture cover plate also has at least one side opening, which communicates with the opening portion.

8. The spot welding device as described in claim 7, characterized in that, It also includes a stop block, which is placed on a horizontal surface on which the fixture is placed. The battery housed in the fixture is positioned between the electrode rod and the stop block.

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