Welding tool for nickel piece and protection plate of circular battery

Abstract

The utility model relates to a welding tool for a nickel sheet and a protective plate of a circular battery, which is characterized by comprising a welding platform body, parallel nickel sheet clamping grooves are arranged on the upper surface of the welding platform body, the shape of each nickel sheet clamping groove is matched with that of the nickel sheet, and the plane shape of each nickel sheet clamping groove is T-shaped. A protection plate clamping groove is vertically formed between the two nickel plate clamping grooves, right opposite to the overlapped area of the nickel plate and the protection plate, of the welding needle and comprises a protection plate negative electrode clamping table and a protection plate positive electrode clamping table, and the length of the protection plate negative electrode clamping table and the length of the protection plate positive electrode clamping table are equal to the length of blank positions, without device installation, at the two ends of the protection plate. And a plurality of magnet sheets are arranged at the bottom of the protection plate clamping groove. According to the utility model, the accurate positioning of the relative positions of the nickel sheet and the protection plate is realized, the hands of an operator are liberated, and the welding efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, and in particular to a welding tool for a round battery nickel sheet and a protection plate. Background Art

[0002] At present, cylindrical lithium-ion batteries are increasingly used in household electrical appliances. Due to the small and light requirements of the battery size, and the need for circuit protection and other functions, it is necessary to connect and assemble it with the integrated circuit protection board to form a battery pack. The battery and the protection board are connected and assembled through nickel sheets to meet the client's requirements. When connecting cylindrical lithium-ion batteries to the protection circuit board, coiled nickel strips are usually used, which are cut according to the length requirements and then connected by resistance welding. The welding of nickel sheets and battery protection boards is mainly completed by semi-automatic cutting settings. In the welding process, the nickel sheets need to be automatically cut into the required length. The nickel sheet is held in one hand and the tin wire is held in the other hand. The battery protection board is first tinned, and then some flux is applied to the next nickel sheet before welding it to the battery protection board. The welding process of nickel sheets and battery protection boards is cumbersome, with low production efficiency and high labor costs. In addition, the appearance of the cut nickel sheets is inconsistent, there is no tooling positioning, the welding appearance is uneven, and it is easy to weld the positive and negative polarities in reverse. The patent document with authorization announcement number CN 213916726 U discloses a battery protection board laser welding jig, including a base plate and a pressure plate assembly arranged above the base plate, the base plate is provided with a protection plate placement groove for placing the protection plate, a positive nickel sheet placement groove for placing the positive nickel sheet, and a negative nickel sheet placement groove for placing the negative nickel sheet, small magnetic blocks are embedded at the bottom of the positive nickel sheet placement groove and the negative nickel sheet placement groove, and a large magnetic block is embedded on the base plate; the positive nickel sheet in the positive nickel sheet placement groove is fixed by adsorption by the small magnetic block at the bottom, the negative nickel sheet in the negative nickel sheet placement groove is fixed by adsorption by the small magnetic block at the bottom, the large magnetic block adsorbs and fixes the pressure plate assembly, and the pressure plate assembly presses the positive nickel sheet and the negative nickel sheet. The patent document with the authorization announcement number CN 202861692 U discloses a special welding fixture for lithium-ion battery resistance welding, including a fixture body and a nickel sheet embedded baffle hinged on both sides of the fixture body, the fixture body is composed of a bottom plate and front and rear vertical plates vertically fixed on the bottom plate, and the nickel sheet embedded baffle is provided with a nickel sheet positioning groove. Magnets are provided between the nickel sheet positioning grooves. The patent document with the authorization announcement number CN 217529787 U discloses a welding fixture for nickel sheet welding, including a bottom plate, a column is provided on one side of the bottom plate, a first slide groove is provided on the inner wall of the column, a threaded column is installed on the inner wall of the first slide groove, a moving block is connected to the outer wall of the threaded column, a second electric push rod is installed on one end of the moving block, and a mounting block is installed on the other end of the second electric push rod. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provides a welding tool for a round battery nickel sheet and a protective plate, so that the nickel sheet and the protective plate are effectively connected to achieve the required appearance length and positive and negative requirements, thereby improving the welding assembly efficiency and accuracy of the battery.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a welding tool for a round battery nickel sheet and a protection plate, comprising a welding platform body, the upper surface of the welding platform body is provided with nickel sheet slots parallel to each other, the shape of the nickel sheet slots matches the shape of the nickel sheet, and its plane shape is T-shaped, a protection plate slot is vertically provided between the two nickel sheet slots facing the overlapping area of ​​the nickel sheet and the protection plate, the protection plate slot comprises a protection plate negative electrode card platform and a protection plate positive electrode card platform, the depth of the protection plate negative electrode card platform and the protection plate positive electrode card platform is equal to the depth of the protection plate slot, the length of the protection plate negative electrode card platform and the protection plate positive electrode card platform is equal to the length of the blank position at both ends of the protection plate where no device is installed, and a plurality of magnet sheets are arranged at the bottom of the protection plate slot.

[0005] Furthermore, the cross-section of the welding platform body is in an "H" shape, and the long side of the H shape constitutes a handle of the hand-pushing platform.

[0006] Furthermore, the length of the negative electrode clamp of the protection plate is smaller than the length of the positive electrode clamp of the protection plate.

[0007] Furthermore, a + / - marking boss is provided at a position corresponding to the protection board slot on the upper surface of the welding platform body, and the boss has a length×width×height of 10mm×10mm×0.5mm.

[0008] Furthermore, the welding platform body is made of non-metallic material.

[0009] Furthermore, the dimensions of the protection board slot are 50.2 mm×4.2 mm×6.5 mm in length×width×depth.

[0010] Beneficial effects: Compared with the prior art, the utility model realizes the accurate positioning of the relative positions of the nickel sheet and the protective plate, frees the operator's hands, and greatly improves the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of a nickel sheet;

[0013] Figure 3 It is a schematic diagram of the structure of the protection board;

[0014] Figure 4 This is a schematic diagram of a semi-finished product after welding.

[0015] In the figure: 1. welding platform body, 1-1. handle, 2. nickel sheet slot, 3. protection board slot, 3-1. protection board negative pole holder, 3-2. protection board positive pole holder, 4. magnet sheet, 5. + / - marking boss, 6. avoidance groove, 7. nickel sheet, 8. protection board, 8-1. positive pole nickel block, 8-2. negative pole nickel block.

[0016] L1, L2, and the blank space length at both ends of the protection board where no devices are installed. DETAILED DESCRIPTION

[0017] The following is a detailed description of the specific implementation method provided by the utility model in combination with the preferred embodiment: See the attached drawings for details. This embodiment provides a welding tool for a round battery nickel sheet and a protective plate, including a welding platform body 1. The upper surface of the welding platform body is provided with nickel sheet slots 2 parallel to each other. The shape of the nickel sheet slots matches the shape of the nickel sheet, and its plane shape is T-shaped. A protective board slot 3 is vertically provided between the two nickel sheet slots in the overlapping area of ​​the welding needle facing the nickel sheet and the protective plate. The protective board slot includes a protective board negative electrode card platform 3-1 and a protective board positive electrode card platform 3-2. The depth of the protective board negative electrode card platform and the protective board positive electrode card platform are equal to the depth of the protective board slot. A plurality of magnet sheets 4 are placed at the bottom of the protective board slot. The number of magnet sheets in this embodiment is three each. See the attached drawings for details. Figure 3 The length of the negative electrode card platform and the positive electrode card platform of the protection board are equal to the length of the blank position at both ends of the protection board where no device is installed. The length of the blank position at both ends of the protection board where no device is installed refers to the length of the blank position at both ends of the protection board where no device is installed. Figure 3 The L1 and L2 positions on the left and right sides.

[0018] The preferred solution of this embodiment is that the cross-section of the welding platform body is in an "H" shape, and the long side of the H shape constitutes the handle 1-1 of the hand-pushing platform. The hand-pushing handle is convenient to hold with both hands and convenient to push toward the welding machine. The handle size is 157 mm×40 mm×10 mm.

[0019] The preferred solution of this embodiment is that the length of the negative electrode clamp of the protection plate is smaller than the length of the positive electrode clamp of the protection plate, so as to match the positive and negative electrode sheets of the protection plate to be actually welded.

[0020] The preferred solution of this embodiment is that a + / - marking boss 5 is provided at a position corresponding to the protection plate slot on the upper surface of the welding platform body, and the boss has a length×width×height of 10mm×10mm×0.5mm.

[0021] The preferred solution of this embodiment is that the welding platform body is made of non-metallic material. This embodiment adopts red bakelite material processing.

[0022] The preferred solution of this embodiment is that the dimensions of the protection board slot length×width×depth are 50.2 mm×4.2 mm×6.5 mm. The lengths of the protection board negative electrode clamping platform and the protection board positive electrode clamping platform of this embodiment are respectively the same as the lengths of the protection boards to be welded.

[0023] The front of the welding platform body of this embodiment is also processed with an avoidance groove 6, the purpose of which is to push the welding platform body to the bottom of the welding machine to conveniently avoid the welding space. The size of the avoidance groove is 52mm×9mm×66mm.

[0024] Working process

[0025] 1. Process and shape the welding platform body;

[0026] 2. Place the positive and negative electrodes of the protection board on the positive and negative card platforms of the protection board according to the marks shown on the + / - marking bosses; the length settings of the negative card slot of the protection board and the positive card slot of the protection board are inconsistent. Since the depth of the protection board device is 2.6mm, and the distance from the edge of the board is inconsistent. If the positive and negative positions of the protection board are reversed, the device position will interfere and cannot be placed in the protection board slot after reverse placement, and it will warp up, so as to prevent mistakes;

[0027] 3. After placing the flat protection plate 8, the nickel sheet 7 is placed in the nickel sheet slot, and the magnet in the slot fixes the nickel sheet;

[0028] 4. Hold the handle and push the welding platform body to place the avoidance groove under the welding equipment position and start welding. Make the welding needle face the overlapping area of ​​the nickel sheet and the positive nickel block 8-1 and the negative nickel block 8-2 of the protection plate to complete the welding of the protection plate and the nickel sheet.

[0029] See attached for details Figure 2 The nickel sheet includes a nickel sheet portion 7-1 for welding the protection plate and a nickel sheet portion 7-2 for welding the battery core. The size of the nickel sheet to be welded in the embodiment is 46.1 mm×24.3 mm×0.15 mm; the size of the protection plate is 50 mm×4.5 mm×0.8 mm. The nickel sheet slot is 46.3 mm×9.7 mm×0.3 mm.

[0030] The key technical point of this patent is to fix the nickel sheet with magnets so that the relative position of the nickel sheet and the protection plate is fixed, thereby avoiding the misalignment of the nickel sheet and the protection plate. Compared with manual and non-foolproof methods, it has significant improvements in efficiency and quality.

[0031] The above-mentioned reference embodiment describes in detail a welding tool for a round battery nickel sheet and a protective plate, which is illustrative rather than restrictive. Several embodiments can be listed according to the limited scope. Therefore, changes and modifications without departing from the overall concept of the utility model should fall within the scope of protection of the utility model.

Claims

1. A welding tool for a round battery nickel sheet and a protective plate, characterized by: It includes a welding platform body, the upper surface of which is provided with nickel sheet slots parallel to each other, the shape of the nickel sheet slots matches the shape of the nickel sheet, and its plane shape is T-shaped, a protection board slot is vertically provided between the two nickel sheet slots facing the overlapping area of ​​the nickel sheet and the protection board, the protection board slot includes a protection board negative electrode card platform and a protection board positive electrode card platform, the depth of the protection board negative electrode card platform and the protection board positive electrode card platform is equal to the depth of the protection board slot, the length of the protection board negative electrode card platform and the protection board positive electrode card platform is equal to the length of the blank position at both ends of the protection board where no device is installed, and a plurality of magnet sheets are arranged at the bottom of the protection board slot.

2. The welding tool for the round battery nickel sheet and the protection plate according to claim 1 is characterized by: The cross-section of the welding platform body is in an "H" shape, and the long side of the H shape constitutes the handle of the hand-pushing platform.

3. The welding tool for the round battery nickel sheet and the protection plate according to claim 1 is characterized by: The length of the negative electrode clamping platform of the protection plate is smaller than the length of the positive electrode clamping platform of the protection plate.

4. The welding tool for the round battery nickel sheet and the protection plate according to claim 1 or 2, characterized in that: A + / - marking boss is provided on the upper surface of the welding platform body at a position corresponding to the protection board slot, and the boss has a length×width×height of 10mm×10mm×0.5mm.

5. The welding tool for the round battery nickel sheet and the protection plate according to claim 4 is characterized by: The welding platform body is made of non-metallic material.

6. The welding tool for round battery nickel sheet and protection plate according to claim 1 is characterized by: The dimensions of the protection board slot are 50.2 mm in length, width and depth, 4.2 mm in width and 6.5 mm in depth.

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