Lithium battery welding device

Abstract

The invention relates to the technical field of lithium battery production, and particularly discloses a lithium battery welding device which comprises a conveying mechanism, a supporting frame and a wiring mechanism, the supporting frame is arranged on the conveying mechanism, a welding mechanism is arranged on the supporting frame, and the wiring mechanism comprises a connecting plate, an upper clamping plate, a lower clamping plate, a push rod, a first push block and a second push block. The top end of the connecting plate is connected with the supporting frame, the lower clamping plate is an L-shaped plate and comprises a bottom plate and a side wall, the upper clamping plate and the lower clamping plate are connected through a first elastic piece, a containing groove is formed between the upper clamping plate and the bottom plate, the push rod is arranged at the bottom of the bottom plate, and the push rod is arranged on the side wall of the bottom plate. A first driving piece and a second driving piece are arranged on the two sides of the supporting frame respectively, the first driving piece is connected with the first pushing block, and the second driving piece is connected with the second pushing block; according to the lithium battery welding device, wires can be bent in sequence, and therefore automatic wiring is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production, and in particular to a lithium battery welding device. Background Art

[0002] Lithium batteries have the advantages of high energy density, no memory effect, extremely low self-discharge rate, and gentle discharge voltage, so they are widely used in various electronic products, such as mobile phones, laptops, digital cameras, etc. However, there are also some safety risks in the use of lithium batteries. For example, overcharging and discharging may cause battery damage or safety accidents.

[0003] The lithium battery protection board is an electronic device specially designed to protect lithium batteries. It can monitor the voltage, current and temperature of lithium batteries. When the battery is overcharged, over-discharged, over-current, short-circuited or over-temperatured, the protection board will automatically cut off the power supply of the battery to prevent battery damage and safety accidents.

[0004] The Chinese patent with the authorization announcement number CN113414463B discloses a welding device for lithium battery and protection board, which includes a welding machine, the welding machine includes an outer shell plate, a top plate is fixed between the outer shell plates, a plurality of connecting plates are installed on the top surface of the outer shell plate, and welding points are arranged on the connecting plates. Four telescopic rods are fixed on the bottom surface of the welding machine, and a fitting block is fixed on the bottom surface of the welding machine. A plurality of lower through grooves with downward openings corresponding to the positions of the connecting plates are arranged in the welding machine, and an upper through groove with an upward opening is arranged in the top wall of the lower through groove, and a pressing rod is slidably connected in the upper through groove, and a position-matching pressure is arranged in the pressing rod. An open groove is called an opening groove, a card block is slidably connected in the open groove, the inner side of the card block is fixedly connected to the inner wall of the open groove by a preload spring, a symmetrical card slot is connected in the side wall of the upper through groove, the bottom surface of the pressing rod is rotatably connected to a connecting rod slidably connected to the lower through groove, a buffer groove with an opening downward is provided in the connecting rod, a fixed rod is slidably connected in the buffer groove, the top surface of the fixed rod and the top wall of the buffer groove are fixedly connected by a buffer spring, a welding head is fixed at the bottom end of the fixed rod, a deep groove is provided in the welding head with an opening away from the fitting block, the deep groove runs through the bottom surface of the welding head, and an electric soldering iron is installed in the side wall of the deep groove.

[0005] The above patent uses a clamping block to fix the wire before welding, then uses a cutting knife to cut off the excess wire, and finally uses a wire stripper to remove the insulation layer outside the wire to complete the preparation work before welding and reduce the work intensity. Before welding, the welding head can be used to press the exposed part of the wire tightly against the connecting plate so that the wire is connected to the lithium battery, and then the voltage and current of the lithium battery are detected using a multimeter to ensure that the lithium battery is normal before welding.

[0006] However, the above patent requires manual wiring of the wiring board and the matching of the wires on the wiring board with the contacts of the lithium battery one by one, which is a time-consuming and labor-intensive process. Summary of the invention

[0007] The present invention provides a lithium battery welding device, aiming to solve the problem of manual lead-in in the related art.

[0008] The lithium battery welding device of the present invention comprises: a conveying mechanism, a support frame and a wiring mechanism; The conveying mechanism is used to move the lithium battery; The support frame is arranged on the conveying mechanism, and a welding mechanism is arranged on the support frame, and the welding mechanism is used to weld the wire to the lithium battery; The wiring mechanism includes a connecting plate, an upper clamping plate, a lower clamping plate, a push rod, a first push block and a second push block. The top end of the connecting plate is connected to the support frame, and the lower clamping plate is an L-shaped plate, which includes a bottom plate and a side wall. The upper clamping plate and the lower clamping plate are connected by a first elastic member, and a receiving groove is formed between the upper clamping plate and the bottom plate. The push rod is arranged at the bottom of the bottom plate, which is used to push the wires on the wiring board to bend. The first driving member and the second driving member are respectively provided on both sides of the support frame. The first driving member is connected to the first push block, and the second driving member is connected to the second push block.

[0009] Beneficial effect: under the elastic force of the first elastic member, the upper clamping plate and the lower clamping plate can clamp the wiring board, extend the push rod, so that the wires on the wiring board are bent and extend out of the receiving groove, and the first push block and the second push block can push the wires extending out of the receiving groove to bend to the welding point of the lithium battery.

[0010] Preferably, a limiting plate is fixedly connected to the side wall, a connecting protrusion is provided on the limiting plate, the connecting protrusion is fixedly connected to the side wall, and a passing groove is provided between the limiting plate and the side wall.

[0011] The effect is that the limiting plate can limit the wires on the wiring board, ensuring that the wires on the wiring board are neatly arranged in the receiving groove.

[0012] Preferably, a first plate is provided on the bottom plate, and a second plate is provided on the side wall, the first plate and the second plate are respectively located on both sides of the passage groove, a first limiting groove is provided on the first plate, and a second limiting groove is provided on the second plate, and guide rods are provided on the first push block and the second push block, and the guide rods can be slidably fitted in the first limiting groove or the second limiting groove.

[0013] The effect is that the guide rod slides in the first limiting groove or the second limiting groove, thereby preventing the first push block or the second push block from deviating during the movement.

[0014] Preferably, an arc-shaped groove is provided at the bottom of the first pushing block and the second pushing block, and a wire can pass through the first pushing block or the second pushing block through the arc-shaped groove.

[0015] Preferably, the first push block and the second push block are both provided with a positioning block, the positioning block is a conical structure, a large diameter end of which is connected to the first push block or the second push block, and the large diameter end of the positioning block is flush with the corresponding arc groove.

[0016] The effect is that the positioning block can gather the wires, thereby ensuring that the wires can extend into the arc groove.

[0017] Preferably, the side wall and the connecting plate are connected by a second elastic member, a baffle is provided on the bottom of the connecting plate, the baffle is rotatably matched with the connecting plate, a limit block is provided on the connecting plate, the limit block can stop with the baffle, and avoidance grooves are provided on the upper clamping plate and the bottom plate, and the baffle can pass through the upper clamping plate and the bottom plate through the avoidance grooves.

[0018] The effect is that when the wire abutting against the side wall is bent and extends out of the accommodating groove under the push of the push rod, the baffle pushes the wiring board to move and makes the next wire abut against the side wall, thereby realizing automatic feeding of the wiring board wires.

[0019] Preferably, a pressing roller is further provided on the support frame, and the pressing roller is located between the welding mechanism and the wiring mechanism. The pressing roller is rotatably connected to the support frame via a torsion spring, and the pressing roller is used to compress the wire.

[0020] Preferably, the conveying mechanism is a conveyor belt, and the conveyor belt is provided with two positioning plates distributed at intervals, and the two positioning plates can respectively stop against two sides of the lithium battery.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are: The lithium battery welding device of the present invention can clamp the wiring board with the upper clamping plate and the lower clamping plate under the elastic force of the first elastic member, and extend the push rod so that the wires on the wiring board are bent and extend out of the receiving groove. The first push block and the second push block can push the wires extending out of the receiving groove to bend to the welding point of the lithium battery, thereby realizing automatic wiring and improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a lithium battery welding device according to an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the wiring mechanism structure of an embodiment of the present invention.

[0024] Figure 34 is a cross-sectional view of a wiring mechanism according to an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of the connecting plate structure of an embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the first push block according to an embodiment of the present invention.

[0027] Figure 6 Schematic diagram of the lithium battery structure of an embodiment of the present invention.

[0028] Figure 7 1 is a diagram showing the relative positions of the wiring board when the lithium battery drives the wiring board to move according to an embodiment of the present invention.

[0029] Figure 8 Schematic diagram of the push rod 44 pushing the wire to bend upward according to the embodiment of the present invention.

[0030] Reference numerals: 1. Conveying mechanism; 2. Support frame; 3. Welding mechanism; 4. Wiring mechanism; 41. Connecting plate; 421. Side wall; 422. Bottom plate; 43. Upper clamping plate; 44. Push rod; 45. First push block; 46. Second push block; 47. First driving member; 48. Second driving member; 5. Limiting plate; 51. Passing groove; 6. First plate; 7. Second plate; 8. Guide rod; 9. Positioning block; 10. First elastic member; 11. Second elastic member; 12. Baffle plate; 13. Limiting block; 14. Pressing roller; 15. Positioning plate; 200, lithium battery; 201, glue point; 202, welding point. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] like Figures 1 to 5 As shown, the lithium battery welding device of the present invention comprises: a conveying mechanism 1, a support frame 2 and a wiring mechanism 4.

[0033] Specifically, Figure 1 As shown, the conveying mechanism 1 is a conveyor belt, and two parallel and spaced positioning plates 15 are provided on both sides of the conveyor belt. The two positioning plates 15 are respectively abutted against the two sides of the lithium battery 200 to position the lithium battery 200.

[0034] like Figure 1 As shown, a welding mechanism 3 is provided on the support frame 2, and the welding mechanism 3 is a welding machine in conventional technology.

[0035] like Figures 1 to 5As shown, the wiring mechanism 4 includes a connecting plate 41, an upper clamping plate 43, a lower clamping plate, a push rod 44, a first push block 45 and a second push block 46. The top of the connecting plate 41 is fixedly connected to the support frame 2. The lower clamping plate is tilted and its front end is lower than its rear end. The lower clamping plate is an L-shaped plate, which includes a side wall 421 and a bottom plate 422. The side wall 421 is elastically connected to the connecting plate 41 through a second elastic member 11. The second elastic member 11 is an elastic connecting rod. The upper clamping plate 43 and the bottom plate 422 are parallel and spaced apart. The upper clamping plate 43 is located above the bottom plate 422. The upper clamping plate 43 and the bottom plate 422 are elastically connected through a first elastic member 10. The first elastic member 10 is an elastic connecting rod. A receiving groove is formed between the upper clamping plate 43 and the bottom plate 422, and the receiving groove is used to receive the wiring board. The push rod 44 is arranged at the bottom of the bottom plate 422, which can pass through the bottom plate 422. The push rod 44 is used to push the wire to bend. The bottom end of the connecting plate 41 is also rotatably matched with the baffle 12. A limit block 13 is provided on the side of the connecting plate 41 away from the side wall 421. The limit block 13 can stop against the baffle 12. The limit block 13 is used to limit the rotation range of the baffle 12 to prevent the baffle 12 from rotating to the right. The upper clamping plate 43 and the bottom plate 422 are both provided with avoidance grooves, and the baffle 12 passes through the avoidance grooves and extends downward. The first driving member 47 and the second driving member 48 are respectively provided on both sides of the support frame 2. The first driving member 47 and the second driving member 48 are both hydraulic cylinders. The first push block 45 is fixedly connected to the output end of the first driving member 47. The first driving member 47 is used to drive the first push block 45 to move left and right. The second push block 46 is fixedly connected to the output end of the second driving member 48. The second driving member 48 is used to drive the second push block 46 to move left and right.

[0036] like Figure 2 As shown, a limit plate 5 is provided on the side wall 421 , the limit plate 5 is flush with the upper clamping plate 43 and is located in front of the upper clamping plate 43 , a connecting protrusion is provided on the limit plate 5 , the connecting protrusion is fixedly connected to the side wall 421 , and a passage groove 51 is provided between the limit plate 5 and the side wall 421 .

[0037] like Figure 2 As shown, a first plate 6 is provided on the fixed plate, and a second plate 7 is provided on the side wall 421. The first plate 6 and the second plate 7 are located on the left and right sides of the passage groove 51. A first limiting groove is provided on the first plate 6, and a second limiting groove is provided on the second plate 7. The first limiting groove and the second limiting groove are symmetrically distributed on the left and right. Guide rods 8 are provided at the bottom of the first push block 45 and the second push block 46, and the guide rods 8 can be slidably fitted in the first limiting groove or the second limiting groove.

[0038] like Figure 5 As shown, an arc groove is provided at the bottom of the first push block 45, and a positioning block 9 is also provided on the first push block 45. The positioning block 9 is a conical structure, and its large diameter end is fixedly connected to the first push block 45, and the side wall 421 of the large diameter end is flush with the arc groove. The second push block 46 has the same structure as the first push block 45.

[0039] like Figure 1 As shown, a pressing roller 14 is also provided on the support frame 2. The pressing roller 14 is located between the welding mechanism 3 and the wiring mechanism 4. The pressing roller 14 is rotatably connected to the support frame 2 through a torsion spring.

[0040] According to the lithium battery welding device of the embodiment of the present invention, the lithium battery 200 is placed on the conveying mechanism 1, and the left and right sides of the lithium battery 200 are respectively stopped by the two positioning plates 15, so as to realize the positioning of the lithium battery 200. At this time, the passage groove 51 is located on the central axis of the lithium battery 200. Figure 6 As shown, the welding points 202 of the lithium battery 200 are located at the top of the lithium battery 200 , and a glue point 201 is provided next to each welding point 202 , and a fixing glue is provided on the glue point 201 .

[0041] Push the lower clamping plate to move to the left, so that the second elastic member 11 stretches and pushes the wiring board into the receiving groove from the right side. During this process, the wiring board pushes the baffle 12 to rotate to the left, thereby preventing the baffle 12 from hindering the movement of the wiring board. After the wiring board passes over the baffle 12, the baffle 12 returns to a vertical state. When the wiring board and the side wall 421 stop, release the lower clamping plate. At this time, the side wall 421 and the baffle 12 stop at the left and right sides of the wiring board respectively. The side wall 421 and the baffle 12 can clamp the wiring board under the action of the second elastic member 11. The upper clamping plate 43 and the bottom plate 422 clamp the wiring board under the action of the first elastic member 10 to prevent the wiring board from falling. The lithium battery 200 is moved from the back to the front by the conveying mechanism 1. The lithium battery 200 gradually approaches the wiring board until the front side wall of the lithium battery 200 stops at the side wall of the wiring board. The lithium battery 200 continues to move forward to drive the wiring board to move forward. Specifically, Figure 7 As shown, when the welding point 202 on the left side of the lithium battery 200 approaches the front end of the bottom plate 422, the conveying mechanism 1 stops, the push rod 44 extends, and pushes the leftmost wire of the wiring board to bend upward, and the wire extends out of the receiving groove through the passage groove 51, as shown in FIG. Figure 8 As shown, the first driving member 47 drives the first push block 45 to move leftward. During the process of moving leftward, the first push block 45 will stop with the wire extending out of the accommodating groove and push the wire to bend leftward. The first push block 45 moves leftward along the second plate 7 until it is separated from the second plate 7. The first push block 45 pushes the wire to extend leftward, so that the wire can adhere to the glue point 201 next to the welding point 202. The conveying mechanism 1 is restarted, and the lithium battery 200 moves forward, so that the wire moves forward and separates from the second plate 7.

[0042] When the leftmost wire of the wiring board is bent upward under the push of the push rod 44, the baffle 12 pushes the wiring board to the left under the action of the second elastic member 11, so that the next wire stops against the side wall 421. When the welding point 202 on the right side of the lithium battery 200 is close to the front end of the bottom plate 422, the second push block 46 is able to bend the wire to the right and make the wire adhere to the glue point 201 corresponding to the welding point 202 in the same principle as the above steps. When the lithium battery 200 passes through the pressing roller 14, the lithium battery 200 will push the pressing roller 14 upward. The pressing roller 14 applies downward pressure to the lithium battery 200 under the action of the torsion spring and presses the wire tightly, so that the wire is firmly adhered to the glue point 201. When the lithium battery 200 passes through the welding mechanism 3, the welding mechanism 3 welds the welding point 202, thereby completing the welding operation of the wiring board.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A lithium battery welding device, comprising: A conveying mechanism, the conveying mechanism is used to move the lithium battery; A support frame, the support frame is arranged on the conveying mechanism, and a welding mechanism is provided on the support frame, and the welding mechanism is used to weld the wire to the lithium battery; It is characterized in that it also includes a wiring mechanism, which includes a connecting plate, an upper clamping plate, a lower clamping plate, a push rod, a first push block and a second push block, the top of the connecting plate is connected to the support frame, the lower clamping plate is an L-shaped plate, which includes a bottom plate and a side wall, the upper clamping plate and the lower clamping plate are connected by a first elastic member, a receiving groove is formed between the upper clamping plate and the bottom plate, the push rod is arranged at the bottom of the bottom plate, and is used to push the wires on the wiring board to bend, and the first driving member and the second driving member are respectively provided on both sides of the support frame, the first driving member is connected to the first push block, and the second driving member is connected to the second push block.

2. The lithium battery welding device according to claim 1, characterized in that: The side wall is also fixedly connected with a limiting plate, the limiting plate is provided with a connecting protrusion, the connecting protrusion is fixedly connected to the side wall, and a passing groove is provided between the limiting plate and the side wall.

3. The lithium battery welding device according to claim 2, characterized in that: A first plate is provided on the bottom plate, and a second plate is provided on the side wall. The first plate and the second plate are respectively located on both sides of the passage groove. A first limiting groove is provided on the first plate, and a second limiting groove is provided on the second plate. Guide rods are provided on the first push block and the second push block, and the guide rods can be slidably fitted in the first limiting groove or the second limiting groove.

4. The lithium battery welding device according to claim 3, characterized in that: The bottom of the first pushing block and the second pushing block is provided with an arc groove, and the wire can pass through the first pushing block or the second pushing block through the arc groove.

5. The lithium battery welding device according to claim 4, characterized in that: The first push block and the second push block are both provided with a positioning block, which is a conical structure, and a large diameter end of which is connected to the first push block or the second push block, and the large diameter end of the positioning block is flush with the corresponding arc groove.

6. The lithium battery welding device according to claim 1, characterized in that: The side wall and the connecting plate are connected by a second elastic member, a baffle is provided on the bottom of the connecting plate, the baffle is rotatably matched with the connecting plate, a limit block is provided on the connecting plate, the limit block can stop with the baffle, the upper clamping plate and the bottom plate are both provided with avoidance grooves, the baffle can pass through the upper clamping plate and the bottom plate through the avoidance grooves.

7. The lithium battery welding device according to claim 1, characterized in that: The support frame is also provided with a pressing roller, the pressing roller is located between the welding mechanism and the wiring mechanism, the pressing roller is rotatably connected to the support frame through a torsion spring, and the pressing roller is used to compress the wire.

8. The lithium battery welding device according to claim 1, characterized in that: The conveying mechanism is a conveyor belt, and two positioning plates distributed at intervals are arranged on the conveyor belt. The two positioning plates can respectively stop against two sides of the lithium battery.

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