Welding jig

Abstract

A welding jig relates to the technical field of battery production and comprises a welding clamp, a driving mechanism, a spot welding machine, a support and a base. The welding clamp is arranged on the base; the support is connected to the base, the fixed end of the driving mechanism is connected to the support, and the driving end of the driving mechanism is connected with the spot welding machine. And the driving mechanism is configured to be capable of driving the spot welding machine to move towards the welding clamp, so that the spot welding machine can perform spot welding on a to-be-welded part located in the welding clamp. According to the welding jig, the spot welding machine can be driven by the driving mechanism to conduct spot welding on the part to be welded, and the welding efficiency and the welding yield can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and more specifically, to a welding fixture. Background Technology

[0002] Currently, laser spot welding of battery cells to PCBs (Printed Circuit Boards) is a mainstream process in battery pack manufacturing. In specific projects, after the PCB and battery cells are loaded into the welding fixture, manual hand-held spot welding machines (such as pressure claws) are usually required to press the battery cell tabs and the welding parts of the PCB together, which results in poor welding efficiency and yield. Utility Model Content

[0003] The purpose of this utility model is to provide a welding fixture to solve, to a certain extent, the technical problem of poor welding efficiency and yield caused by manually hand-held spot welding machines pressing the electrode tabs of the battery cell and the welding parts of the PCB.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A welding fixture includes a welding clamp, a drive mechanism, a spot welding machine, a support, and a base;

[0006] The welding fixture is mounted on the base;

[0007] The bracket is connected to the base, the fixed end of the drive mechanism is connected to the bracket, and the drive end of the drive mechanism is connected to the spot welding machine. The drive mechanism is configured to drive the spot welding machine toward the welding fixture so that the spot welding machine can spot weld the workpiece located in the welding fixture.

[0008] Optionally, in any of the above technical solutions, the welding fixture further includes a welding machine connector; the welding machine connector is connected between the drive end of the drive mechanism and the spot welding machine;

[0009] The welding machine connector is provided with multiple holes for assembling the spot welding machine, so that the spot welding machine can be installed at different positions on the welding machine connector through the multiple holes.

[0010] In any of the above technical solutions, optionally, the bracket includes a support portion and a shielding portion; the support portion is connected to the base, and the support portion supports and connects to the drive mechanism;

[0011] The shielding part is connected to the support part, and a through groove is provided between the shielding part and the base for the welding fixture to pass through.

[0012] In any of the above technical solutions, optionally, the welding fixture includes a first direction, a second direction, and a third direction that intersect each other, wherein the spot welding machine can move along the third direction;

[0013] The number of the support parts is two; along the first direction, the two support parts are respectively arranged on both sides of the welding fixture; each support part is connected to the drive mechanism;

[0014] Along the second direction, the shielding part is connected to one or both sides of the support part.

[0015] Optionally, in any of the above technical solutions, the welding fixture further includes a control device; the drive mechanism and the spot welding machine are respectively electrically connected to the control device.

[0016] In any of the above technical solutions, optionally, the welding fixture further includes a positioning sensor and is provided with a receiving groove for accommodating the welding fixture; the base is provided with the positioning sensor;

[0017] The positioning sensor is electrically connected to the control device; the positioning sensor is configured to monitor the welding fixture after it is installed in the receiving groove and then send positioning information to the control device.

[0018] Optionally, in any of the above technical solutions, the welding fixture further includes a switch; the switch is electrically connected to the control device.

[0019] The switch is configured to send a switch signal to the control device; the control device receives the switch signal and sends working instructions to the drive mechanism and the spot welding machine, respectively.

[0020] In any of the above technical solutions, optionally, the receiving groove has an adjacent first opening and a second opening; along the movement direction of the spot welding machine, the first opening is located on the side of the receiving groove closer to the spot welding machine; the surface where the second opening is located intersects with the surface where the first opening is located; the positioning sensor and the second opening are located on opposite sides of the receiving groove.

[0021] In any of the above technical solutions, optionally, the component to be welded includes a control board and a battery cell; the number of battery cells is one or more;

[0022] The welding fixture is provided with a first fixture slot and a second fixture slot; the first fixture slot is configured to accommodate the control board, the second fixture slot is configured to accommodate the battery cell, and the number of the second fixture slots corresponds to the number of the battery cells;

[0023] The number of spot welding machines is the same as the number of battery cells, and the spot welding machines are configured to weld the corresponding battery cells onto the control board.

[0024] The number of drive mechanisms is adapted to the number of spot welding machines, and each drive mechanism is connected to one or more spot welding machines.

[0025] In any of the above technical solutions, the driving mechanism may optionally include a motor, a pneumatic cylinder, or a hydraulic cylinder;

[0026] The drive mechanism includes a guide structure.

[0027] The spot welding machine includes pressure claws;

[0028] The welding fixture includes a handle.

[0029] The main beneficial effects of this utility model are as follows:

[0030] The welding fixture provided by this utility model includes a welding jig, a drive mechanism, a spot welder, a bracket, and a base. By placing the welding jig, which holds the workpiece to be welded, on the base, the drive mechanism drives the spot welder to move toward the welding jig, thereby enabling the spot welder to spot weld the workpiece, achieving automatic welding of the workpiece. For example, if the workpiece to be welded is a battery cell and a PCB, by using this welding fixture, the drive mechanism can drive the spot welder to weld the battery cell onto the PCB, effectively improving welding efficiency and welding yield.

[0031] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the welding fixture provided in an embodiment of the present utility model;

[0034] Figure 2 A schematic diagram of the structure of the welding fixture provided in an embodiment of this utility model (the shielding part is not shown);

[0035] Figure 3 for Figure 2 The front view of the welding fixture shown;

[0036] Figure 4 for Figure 3 A top view of the welding fixture shown;

[0037] Figure 5 for Figure 3 An exploded view of the welding fixture shown (showing the shielded parts);

[0038] Figure 6 for Figure 5 A partial enlarged view of the welding fixture shown;

[0039] Figure 7 Exploded view of the welding fixture and the workpiece to be welded provided in the embodiment of this utility model;

[0040] Figure 8 This is a schematic diagram of the structure of the base provided in an embodiment of the present utility model.

[0041] Icons: 100-Welding fixture; 110-First fixture slot; 120-Second fixture slot; 130-Handle part; 200-Drive mechanism; 300-Spot welding machine; 400-Bracket; 410-Support part; 420-Shielding part; 500-Base; 510-Receiving slot; 520-Position sensor; 600-Welding machine connector; 700-Control device; 800-Switch; 900-Workpiece to be welded; 910-Control board; 920-Battery cell. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0049] Example

[0050] This embodiment provides a welding fixture that can be used for laser spot welding of battery cells to PCBs in battery pack manufacturing. See also... Figures 1-8 As shown, the welding fixture includes a welding clamp 100, a drive mechanism 200, a spot welding machine 300, a bracket 400, and a base 500.

[0051] The welding fixture 100 is disposed on the base 500. Optionally, the base 500 is provided with a receiving groove 510, and the welding fixture 100 is configured to be received in the receiving groove 510.

[0052] A bracket 400 is connected to a base 500, and the fixed end of a drive mechanism 200 is connected to the bracket 400. The drive end of the drive mechanism 200 is connected to a spot welder 300. The drive mechanism 200 is configured to drive the spot welder 300 toward the welding fixture 100 so that the spot welder 300 can spot weld the workpiece 900 located in the welding fixture 100. The workpiece 900 to be welded includes, for example, a control board 910 (e.g., a PCB) and a battery cell 920 (e.g., a battery cell). After the control board 910 and the battery cell 920 are placed in the welding fixture 100, the welding fixture 100 is placed on the base 500, and then the drive mechanism 200 drives the spot welder 300 to weld the control board 910 and the battery cell 920.

[0053] The welding fixture described in this embodiment includes a welding jig 100, a drive mechanism 200, a spot welder 300, a support 400, and a base 500. By placing the welding jig 100, which holds the workpiece 900 to be welded, on the base 500, the drive mechanism 200 drives the spot welder 300 to move toward the welding jig 100, thereby enabling the spot welder 300 to spot weld the workpiece 900, achieving automatic welding of the workpiece 900. For example, if the workpiece 900 to be welded is a battery cell and a PCB, by using this welding fixture, the drive mechanism 200 can drive the spot welder 300 to weld the battery cell onto the PCB, effectively improving welding efficiency and welding yield. For example, the welding defect rate can be reduced from 15% to 0.01%.

[0054] See Figure 6 As shown, in an optional embodiment, the welding fixture further includes a welding machine connector 600; the welding machine connector 600 is connected between the drive end of the drive mechanism 200 and the spot welding machine 300; the welding machine connector 600 facilitates the connection of the spot welding machine 300 to the drive end of the drive mechanism 200.

[0055] Optionally, the welding machine connector 600 is provided with multiple holes for mounting the spot welding machine 300, so that the spot welding machine 300 can be installed in different positions on the welding machine connector 600 through the multiple holes. By providing multiple holes on the welding machine connector 600, the position of the spot welding machine 300 on the welding machine connector 600 can be adjusted according to different parts 900 to be welded.

[0056] See Figures 1-5As shown, in an optional embodiment, the bracket 400 includes a support portion 410 and a shielding portion 420. The support portion 410 is connected to the base 500 and supports the drive mechanism 200. For example, the bottom of the support portion 410 is connected to the base 500, and the top of the support portion 410 supports the drive mechanism 200. The shielding portion 420 is connected to the support portion 410, and a through groove for the welding fixture 100 to pass through is provided between the shielding portion 420 and the base 500. The support portion 410 supports the drive mechanism 200, and the shielding portion 420 blocks the strong light generated by laser spot welding to reduce harm to employees' eyes.

[0057] Optionally, the shielding part 420 may be made of an opaque material.

[0058] See Figure 7 As shown, in the optional embodiment, the workpiece 900 to be welded includes a control board 910 and a battery cell 920; the number of battery cells 920 is one or more; the welding fixture 100 is provided with a first fixture slot 110 and a second fixture slot 120; the first fixture slot 110 is configured to accommodate the control board 910, the second fixture slot 120 is configured to accommodate the battery cells 920, and the number of second fixture slots 120 corresponds to the number of battery cells 920; the number of spot welders 300 is the same as the number of battery cells 920, and the spot welders 300 are configured to weld the corresponding battery cells 920 onto the control board 910; the number of drive mechanisms 200 is adapted to the number of spot welders 300, and a single drive mechanism 200 connects to one or more spot welders 300.

[0059] When the component 900 to be welded includes a control board 910 and two battery cells 920, two spot welding machines 300 can be used to weld the two battery cells 920 onto the control board 910 respectively. For example, see Figures 1-6 As shown, in the optional embodiment, the welding fixture includes a first direction, a second direction, and a third direction that intersect each other. The spot welding machine 300 can move along the third direction, for example, the third direction is vertical. There are two support parts 410; along the first direction, the two support parts 410 are respectively arranged on the corresponding sides of the welding fixture 100; each support part 410 is connected to a drive mechanism 200; along the second direction, a shielding part 420 is connected to one or both sides of the support part 410.

[0060] See Figure 1 As shown, in an optional embodiment, the welding fixture further includes a control device 700; the drive mechanism 200 and the spot welder 300 are electrically connected to the control device 700. The control device 700 facilitates the electrical control of the drive mechanism 200 and the spot welder 300.

[0061] See Figure 8 As shown, in the optional embodiment, the welding fixture further includes a positioning sensor 520; the base 500 is equipped with the positioning sensor 520; the positioning sensor 520 is electrically connected to the control device 700; the positioning sensor 520 is configured to monitor the welding fixture 100 after it is positioned in the receiving groove 510, and then send positioning information to the control device 700. The positioning sensor 520 allows for better detection of whether the welding fixture 100 is properly installed on the base 500, thus ensuring welding yield to a certain extent.

[0062] See Figure 1 As shown, in an optional embodiment, the welding fixture further includes a switch 800; the switch 800 is electrically connected to the control device 700; the switch 800 is configured to send a switch signal to the control device 700; the control device 700 receives the switch signal and sends working instructions to the drive mechanism 200 and the spot welding machine 300 respectively. For example, the switch 800 is manually operated, and then the control device 700 controls the drive mechanism 200 to drive the spot welding machine 300 to move, and instructs the spot welding machine 300 to spot weld the workpiece 900.

[0063] The welding fixture described in this embodiment can also be in automatic mode. For example, after receiving the positioning information from the positioning sensor 520, the control device 700 automatically sends working instructions to the drive mechanism 200 and the spot welding machine 300 to automatically control the drive mechanism 200 to drive the spot welding machine 300 to move and to make the spot welding machine 300 spot weld the workpiece 900 to be welded.

[0064] In an optional embodiment, the receiving groove 510 has an adjacent first opening and a second opening; along the movement direction of the spot welding machine 300, the first opening is located on the side of the receiving groove 510 close to the spot welding machine 300; the surface where the second opening is located intersects with the surface where the first opening is located; for example, the first opening is located at the top of the receiving groove 510 and the second opening is located on the side of the receiving groove 510.

[0065] The positioning sensor 520 and the second opening are located on opposite sides of the receiving groove 510. The positioning sensor 520 and the second opening are located on opposite sides of the receiving groove 510 to facilitate better monitoring by the positioning sensor 520 of whether the workpiece 900 to be welded is properly positioned within the welding fixture 100.

[0066] In an optional embodiment, the drive mechanism 200 may include a motor, a pneumatic cylinder, or a hydraulic cylinder, or other drive structures.

[0067] In an optional embodiment, the drive mechanism 200 includes a guide structure; the guide structure helps to ensure the stability of the drive mechanism 200 during movement.

[0068] In an optional embodiment, the spot welding machine 300 may include pressure claws or other structures.

[0069] In an optional embodiment, the welding fixture 100 includes a handle portion 130. The handle portion 130 facilitates gripping the welding fixture 100.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding fixture, characterized in that, It includes a welding fixture (100), a drive mechanism (200), a spot welding machine (300), a bracket (400), and a base (500); The welding fixture (100) is disposed on the base (500); The bracket (400) is connected to the base (500), the fixed end of the drive mechanism (200) is connected to the bracket (400), and the drive end of the drive mechanism (200) is connected to the spot welding machine (300). The drive mechanism (200) is configured to drive the spot welding machine (300) toward the welding fixture (100) so that the spot welding machine (300) can spot weld the workpiece (900) located in the welding fixture (100).

2. The welding fixture according to claim 1, characterized in that, The welding fixture also includes a welding machine connector (600); the welding machine connector (600) is connected between the drive end of the drive mechanism (200) and the spot welding machine (300); The welding machine connector (600) is provided with a plurality of holes for mounting the spot welding machine (300), so that the spot welding machine (300) can be installed at different positions on the welding machine connector (600) through the plurality of holes.

3. The welding fixture according to claim 1, characterized in that, The bracket (400) includes a support portion (410) and a shielding portion (420); the support portion (410) is connected to the base (500), and the support portion (410) supports and connects to the drive mechanism (200); The shielding part (420) is connected to the support part (410), and a through groove for the welding fixture (100) to pass through is provided between the shielding part (420) and the base (500).

4. The welding fixture according to claim 3, characterized in that, The welding fixture includes a first direction, a second direction, and a third direction that intersect each other, wherein the spot welding machine (300) can move along the third direction; The number of the support parts (410) is two; along the first direction, the two support parts (410) are respectively disposed on the corresponding sides of the welding fixture (100); each support part (410) is connected to the drive mechanism (200); Along the second direction, the shielding part (420) is connected to one or both sides of the support part (410).

5. The welding fixture according to claim 1, characterized in that, The welding fixture also includes a control device (700); the drive mechanism (200) and the spot welding machine (300) are electrically connected to the control device (700).

6. The welding fixture according to claim 5, characterized in that, The welding fixture also includes a positioning sensor (520); the base (500) is provided with the positioning sensor (520) and a receiving groove (510) for accommodating the welding fixture (100); the positioning sensor (520) is electrically connected to the control device (700); the positioning sensor (520) is configured to monitor the welding fixture (100) after it is installed in the receiving groove (510) and send positioning information to the control device (700).

7. The welding fixture according to claim 6, characterized in that, The welding fixture also includes a switch (800); the switch (800) is electrically connected to the control device (700); The switch (800) is configured to send a switch signal to the control device (700); the control device receives the switch signal and sends working instructions to the drive mechanism (200) and the spot welding machine (300), respectively.

8. The welding fixture according to claim 6, characterized in that, The receiving groove (510) has an adjacent first opening and a second opening; along the movement direction of the spot welding machine (300), the first opening is located on the side of the receiving groove (510) closer to the spot welding machine (300); the surface where the second opening is located intersects the surface where the first opening is located; the position sensor (520) and the second opening are located on opposite sides of the receiving groove (510).

9. The welding fixture according to claim 1, characterized in that, The component to be welded (900) includes a control board (910) and a battery cell (920); the number of battery cells (920) is one or more; The welding fixture (100) is provided with a first fixture slot (110) and a second fixture slot (120); the first fixture slot (110) is configured to accommodate the control board (910), and the second fixture slot (120) is configured to accommodate the battery cell (920), and the number of the second fixture slots (120) corresponds to the number of the battery cells (920); The number of spot welding machines (300) is the same as the number of battery cells (920), and the spot welding machines (300) are configured to weld the corresponding battery cells (920) onto the control board (910); The number of drive mechanisms (200) is adapted to the number of spot welding machines (300), and each drive mechanism (200) is connected to one or more spot welding machines (300).

10. The welding fixture according to claim 1, characterized in that, The drive mechanism (200) includes a motor, a pneumatic cylinder, or a hydraulic cylinder; The drive mechanism (200) includes a guide structure; and / or, The spot welding machine (300) includes pressure claws; and / or, The welding fixture (100) includes a handle (130).

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