Square battery welding tool

Abstract

The utility model discloses a square battery welding tool which comprises a base and a bottom plate, a square groove is formed in the middle of the base, a jacking electric cylinder is installed on the bottom plate, a jacking plate is connected to the jacking electric cylinder, and the square groove is used for jacking out of the jacking plate. Two groups of side pushing mechanisms are arranged on the base, are respectively positioned on two sides of two short edges of the square groove, are opposite to each other and are used for clamping the short edges of the square battery; a forward pushing mechanism is further arranged on the base and installed on one side of one long edge of the square groove, a fixing mechanism is arranged on one side of the other long edge of the square groove and used for supporting the square battery from the side wall, and the forward pushing mechanism is opposite to the fixing mechanism and used for clamping the long edges of the square battery. And the screw knob is adjusted in real time, so that the shell and the cover plate are tightly attached, and the light leakage condition is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of peripheral welding and clamping of single cells, in particular to a square cell welding tool. Background Art

[0002] In the manufacturing process of square batteries, the quality of the welding between the shell and the cover (also known as peripheral welding) plays a vital role in the performance indicators of the finished battery. At present, square batteries often fail to effectively clamp the battery due to the inability of the tooling to effectively clamp the battery, resulting in a gap between the square shell and the battery cover. During laser welding, the laser beam penetrates into the battery along the gap and burns the battery pole piece or diaphragm. This is called "light leakage" and poses a great threat to the safety of the battery. Therefore, in order to improve the yield of the peripheral welding process, there is an urgent need for a simple, easy-to-control, and easy-to-operate square battery peripheral welding clamping tool. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a square battery welding tool.

[0004] The utility model proposes a square battery welding tool, which is characterized in that it includes a base, a square groove is opened in the middle of the base, and a lifting mechanism is installed under the base to support the square battery; two sets of side pushing mechanisms are provided on the base, which are respectively located on both sides of the two short sides of the square groove and are opposite to each other, and are used to clamp the short sides of the square battery; the base is also provided with a forward pushing mechanism and a fixing mechanism, which are respectively located on both sides of the two long sides of the square groove and are opposite to each other, the fixing mechanism is used to support one side wall of the square battery, and the forward pushing mechanism is used to clamp the long side of the square battery.

[0005] Preferably, the lifting mechanism includes a bottom plate, which is connected to the bottom of the base through a connecting rod, a lifting electric cylinder is installed on the bottom plate, and a lifting plate is connected to the lifting electric cylinder. The lifting plate is used to support the square battery from the bottom, and the square groove is used to eject the lifting plate.

[0006] Preferably, a lifting block is connected to the top of the lifting plate by screws. The lifting block is slightly smaller than the length and thickness of the square battery by 1mm to 2mm and is detachable and changeable to be compatible with more sizes.

[0007] Preferably, the base is provided with four holes for fixing to the device.

[0008] Preferably, the side-thrust mechanism includes a side-thrust cylinder, which is connected to the base through a second fixed block. The cylinder rod of the side-thrust cylinder is disc-shaped and is connected to a cylinder connecting block. The cylinder connecting block is connected to a side-thrust block. The size of the side-thrust block is slightly smaller than the height and thickness of the square battery by 1mm to 2mm. The side-thrust block is detachable and changeable to be compatible with more types of battery cell sizes.

[0009] Preferably, the forward thrust mechanism includes a forward thrust cylinder and a clamping plate, the forward thrust cylinder is connected to the base through a first fixed block, the forward thrust cylinder is connected to a push plate, a root bolt is provided on the large side surface of the clamping plate, the root bolt is passed through the push plate, and a second spring is provided on the bolt part between the push plate and the clamping plate.

[0010] Preferably, the fixing mechanism includes a fixing plate, which is vertically installed on the base, a baffle is vertically provided on the rear side of the top of the fixing plate, a clamping block is slidably connected to the top of the fixing plate, a plurality of groups of bolt holes are provided on the baffle, the clamping block is connected to the baffle by bolts, and a first spring is provided on the bolt part between the clamping block and the baffle.

[0011] Preferably, the bolts between the baffle plate and the clamping block are provided with adjusting knobs.

[0012] Preferably, a stopper is also installed on the base, and the stopper is located on the back side of the fixing plate and is used for limiting the fixing plate.

[0013] In the utility model, a square battery welding tool is proposed. The square battery peripheral welding clamping tool is compatible with the peripheral welding of various types of batteries, is easy to operate, and can effectively reduce the cost of battery replacement.

[0014] The square battery peripheral welding clamping tool can adjust the screw knob in real time according to the battery clamping status to achieve a tight fit between the shell and the cover, reduce the occurrence of light leakage, further improve the welding yield of the peripheral welding process, and effectively reduce battery safety issues caused by poor welding.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram of the assembly of the welding tooling around the square battery in the utility model;

[0017] Figure 2 This is a schematic diagram of the bottom of the welding tooling around the square battery in the utility model;

[0018] Figure 3 It is a schematic diagram of the ejection structure in the utility model;

[0019] Figure 4 It is a schematic diagram of the fixing mechanism in the utility model;

[0020] Figure 5 This is a schematic diagram of the clamping block in the utility model;

[0021] Figure 6It is a schematic diagram of a fixing plate in the utility model;

[0022] Figure 7 It is a schematic diagram of the side thrust mechanism in the utility model;

[0023] Figure 8 It is a schematic diagram of the cylinder connecting block in the utility model.

[0024] Explanation of the numbers in the figure: 1. Clamping block; 2. First spring; 3. Bolt adjustment knob; 5. Fixed plate; 6. Side thrust cylinder; 7. Stop block; 8. Square battery; 9. Forward thrust cylinder; 10. Second spring; 11. Push plate; 12. Clamping plate; 13. First fixed block; 14. Side thrust block; 15. Base; 16. Second fixed block; 17. Lifting electric cylinder; 18. Lifting plate; 19. Connecting rod; 20. Bottom plate; 21. Lifting block; 22. Cylinder connecting block. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] like Figure 1-Figure 8 A square battery welding tool shown in the figure comprises a base 15 and a bottom plate 20, wherein a square groove is provided in the middle of the base 15, and the bottom plate 20 is connected to the bottom of the base 15 through a connecting rod 19, and a lifting electric cylinder 17 is installed on the bottom plate 20, and a lifting plate 18 is connected to the lifting electric cylinder 17, and the lifting plate 18 is used to support the square battery 8 from the bottom, and the square groove is used for the lifting plate 18 to be ejected;

[0027] The base 15 is provided with two sets of side push mechanisms, which are respectively located on both sides of the two short sides of the square groove and are opposite to each other, and are used to clamp the short sides of the square battery 8;

[0028] The base 15 is also provided with a forward pushing mechanism, which is installed on one side of one long side of the square groove. A fixing mechanism is provided on the other long side of the square groove for supporting the square battery 8 from the side wall. The forward pushing mechanism is opposite to the fixing mechanism and is used to clamp the long side of the square battery 8.

[0029] Preferably, a lifting block is connected to the top of the lifting plate by screws. The lifting block 21 is slightly smaller than the length and thickness of the square battery 8 by 1mm to 2mm, and is detachable and changeable to be compatible with more sizes.

[0030] Preferably, the base 15 is provided with four holes for fixing to the device.

[0031] Preferably, the side thrust mechanism includes a side thrust cylinder 6, which is connected to the base 15 through a second fixed block 16. The cylinder rod of the side thrust cylinder 6 is disc-shaped and is connected to a cylinder connecting block 22. The cylinder connecting block 22 is connected to a side thrust block 14. The side thrust block 14 is slightly smaller than the square battery 8 in height and thickness by 1mm to 2mm. The side thrust block 14 is detachable and changeable to be compatible with more types of battery cell sizes. The side thrust block 14 is connected to the cylinder connecting block 22 with screws. The positioning member 4 is slotted to adapt to different sizes of side thrust blocks 14 for fixing. The cylinder rod of the side thrust cylinder 6 is disc-shaped and is connected to the cylinder connecting block 22.

[0032] Preferably, the forward thrust mechanism includes a forward thrust cylinder 9 and a clamping plate 12, the forward thrust cylinder 9 is connected to the base 15 through a first fixed block 13, the forward thrust cylinder 9 is connected to a push plate 11, the large side surface of the clamping plate 12 is provided with 4 bolts, the 4 bolts are passed through the push plate 11, and the bolt part between the push plate 11 and the clamping plate 12 is provided with a second spring 10.

[0033] Preferably, the fixing mechanism includes a fixing plate 5, which is vertically installed on the base 15, and a baffle is vertically provided on the rear side of the top of the fixing plate 5. A clamping block 1 is slidably connected to the top of the fixing plate 5, and a plurality of groups of bolt holes are provided on the baffle. The clamping block 1 is connected to the baffle through bolts, and a first spring 2 is provided on the bolt part between the clamping block 1 and the baffle. A groove is provided on one side of the long side of the fixing plate 5 and a boss is provided on one end of the long side of the clamping block 1, and the two cooperate to limit the position.

[0034] Preferably, the bolts between the baffle plate and the clamping block 1 are provided with adjustment knobs 3 to facilitate manual adjustment.

[0035] Preferably, a stopper 7 is also mounted on the base 15 , and the stopper 7 is located on the back side of the fixing plate 5 and is used for limiting the fixing plate 5 .

[0036] Restore the two side push cylinders 6, the forward push cylinder 9, and the lifting electric cylinder 17 to their original positions, place the square battery 8 after shelling in the tooling slot, and then start each cylinder. The working actions of each mechanism are as follows: First, the lifting mechanism works: the lifting plate 18 is pushed by the lifting electric cylinder 17, and the lifting plate 18 drives the lifting block 21 to lift the square battery 8. The lifting electric cylinder can set a reasonable lifting height according to the height of the square battery 8. It is required that the welding edge around the square battery 8 is 1mm to 2mm away from each clamping block, and the laser is placed on each clamping block. Subsequently, the forward push cylinder 9 pushes the push plate 11, and the push plate 11 squeezes the push plate spring 10 to drive the clamping plate 12 to clamp the long side of the square battery 8. The concentrated force output by the cylinder is decomposed into the extrusion force of 4 positions through the second spring 10, so that the clamping plate 12 can better fit the long side of the square battery 8, avoiding the problem of uneven clamping force in the long side direction. Next, the side push cylinder 6 pushes the cylinder connection block 22, driving the positioning member 4 and the side push block 14 to clamp the side of the square battery 8. Finally, check the clamping effect, mainly to see whether there is a gap between the shell and the cover of the square battery 8, or whether there is light leakage in the battery after disassembly and welding. If light leakage is found, confirm the light leakage position, and adjust the adjustment knob 3 accordingly. The rebound force released by the first spring 2 makes the clamping block 1 and the light leakage area of ​​the square battery 8 fit more tightly, which can effectively reduce the occurrence of light leakage and further improve the welding yield.

[0037] The square battery peripheral welding clamping tool is compatible with the peripheral welding of various types of batteries, is easy to operate, and can effectively reduce the cost of battery replacement.

[0038] The square battery peripheral welding clamping tool can adjust the screw knob in real time according to the battery clamping status to achieve a tight fit between the shell and the cover, reduce the occurrence of light leakage, further improve the welding yield of the peripheral welding process, and effectively reduce battery safety issues caused by poor welding.

[0039] 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 a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot 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 utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A square battery welding tool, characterized in that: The invention comprises a base (15), wherein a square groove is provided in the middle of the base (15), and a lifting mechanism is installed below the base (15) for supporting a square battery (8); the base (15) is provided with two sets of side pushing mechanisms, which are respectively located on the two sides of the two short sides of the square groove and are opposite to each other, and are used to clamp the short sides of the square battery (8); the base (15) is also provided with a forward pushing mechanism and a fixing mechanism, which are respectively located on the two sides of the two long sides of the square groove and are opposite to each other, and the fixing mechanism is used to support a side wall of the square battery (8), and the forward pushing mechanism is used to clamp the long side of the square battery (8).

2. A square battery welding tool according to claim 1, characterized in that: The lifting mechanism comprises a bottom plate (20), the bottom plate (20) being connected to the bottom of the base (15) via a connecting rod (19), a lifting electric cylinder (17) being mounted on the bottom plate (20), a lifting plate (18) being connected to the lifting electric cylinder (17), the lifting plate (18) being used to support the square battery (8) from the bottom, and the square groove being used to eject the lifting plate (18).

3. A square battery welding tool according to claim 2, characterized in that: The top of the lifting plate (18) is connected to a lifting block (21) by screws. The lifting block (21) is slightly smaller than the length and thickness of the square battery (8) by 1 mm to 2 mm and is detachable and compatible with more sizes.

4. A square battery welding tool according to claim 1, characterized in that: The base (15) is provided with four holes for fixing to the equipment.

5. A square battery welding tool according to claim 1, characterized in that: The side thrust mechanism comprises a side thrust cylinder (6), the side thrust cylinder (6) is connected to a base (15) via a second fixing block (16), the cylinder rod of the side thrust cylinder (6) is disc-shaped and is connected to a cylinder connecting block (22), the cylinder connecting block (22) is connected to a side thrust block (14), the side thrust block (14) is slightly smaller than the height and thickness of a square battery (8) by 1 mm to 2 mm, and the side thrust block (14) is detachable and remodelable to be compatible with more types of battery cell sizes.

6. A square battery welding tool according to claim 1, characterized in that: The forward thrust mechanism comprises a forward thrust cylinder (9) and a clamping plate (12), wherein the forward thrust cylinder (9) is connected to a base (15) via a first fixing block (13), the forward thrust cylinder (9) is connected to a push plate (11), a large side surface of the clamping plate (12) is provided with four bolts, the four bolts are passed through the push plate (11), and a second spring (10) is provided at a bolt portion between the push plate (11) and the clamping plate (12).

7. The square battery welding tool according to claim 1, characterized in that: The fixing mechanism comprises a fixing plate (5), the fixing plate (5) is vertically mounted on a base (15), a baffle is vertically provided on the rear side of the top of the fixing plate (5), a clamping block (1) is slidably connected to the top of the fixing plate (5), a plurality of groups of bolt holes are provided on the baffle, the clamping block (1) is connected to the baffle via bolts, and a first spring (2) is provided at the bolt portion between the clamping block (1) and the baffle.

8. A square battery welding tool according to claim 7, characterized in that: The bolts between the baffle plate and the clamping block (1) are provided with adjusting knobs.

9. A square battery welding tool according to claim 7, characterized in that: A stopper (7) is also mounted on the base (15), and the stopper (7) is located on the back side of the fixing plate (5) and is used to limit the fixing plate (5).

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