A new type of aluminum-palladium welding fixture for square battery packs

Abstract

The present invention relates to a novel square battery pack aluminum-palladium welding jig, comprising a jig main body, a first fixed clamping seat and a second fixed clamping seat. Limiting grooves are provided on all four sides of the jig main body, and a first fixed clamping seat and three second fixed clamping seats are respectively installed in the four limiting grooves. A welding groove for limiting the aluminum-palladium position is provided on the jig main body; the jig can effectively prevent short circuits in series connection of battery packs, the first fixed clamping seat and the second fixed clamping seat can effectively limit the relative movement of the battery pack and the jig, the lower surface of the jig is consistent with the positive and negative electrode surfaces of the battery pack, and the movement of the aluminum-palladium is most effectively limited. The jig has high safety performance and good insulation properties. The material can prevent damage to the welded battery pack caused by malfunction of the welding machine. The material is flame retardant, has high efficiency and high fault tolerance, and can effectively prevent the occurrence of cold welding and the like during the welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack processing, and in particular to a novel aluminum-palladium welding jig for square battery packs. Background Art

[0002] Square aluminum shell jigs generally have their own characteristics. When welding aluminum and palladium on a 12.8V400AH square aluminum shell battery pack, the existing welding jig is complicated to operate and cannot limit and fix the aluminum and palladium and the battery pack, causing the aluminum and palladium to move during the welding process, which in turn leads to deviations in the welding work and causes property losses. Summary of the Invention

[0003] The problem solved by the present invention is to provide a new square battery pack aluminum-palladium welding jig, which can effectively improve the welding quality and speed. Compared with traditional jigs, it is simple to operate, has a high fault tolerance rate in working operation, and can effectively reduce property losses when a fault occurs.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A novel aluminum-palladium welding jig for square battery packs, comprising a jig body, a first fixing base, and a second fixing base. The jig body is provided with limiting slots on all four sides, with one first fixing base and three second fixing bases installed in each of the four limiting slots. The jig body is provided with a welding slot for limiting the aluminum-palladium position.

[0006] The first fixed card seat and the second fixed card seat both include right-angled card plates, and the right-angled card plates pass through the limiting slots, and a right-angled baffle is installed on each right-angled card plate.

[0007] Preferably, three first inner cavities are opened inside the fixture body, and a first spring is installed in each of the first inner cavities. The first spring is connected to the first piston, and a limiting rod is installed on the first piston and passes through the first inner cavity.

[0008] Preferably, two second inner cavities are opened inside the right-angle clamping plate of the first fixed clamping seat, and the outer end of the second inner cavity is conductively connected to the end of the first inner cavity near the limiting groove. A second spring is installed inside the second inner cavity, and the second spring is connected to the second piston.

[0009] Preferably, a connecting rod is installed on the second piston, and the two connecting rods are arranged vertically, and a contact plate is installed on the outer end of the connecting rod outside the right-angle clamping plate.

[0010] Preferably, an accommodating groove is provided on the inner wall of the right-angled clamping plate of the first fixed clamping seat, and the accommodating groove is adapted to the contact plate.

[0011] Preferably, a limiting hole is provided on the right-angled clamping plate of the second fixed clamping seat, and the limiting hole is adapted to the limiting rod.

[0012] Preferably, the specific operating steps of the welding jig are as follows:

[0013] The first fixing base and the second fixing base are both installed in the limiting groove of the jig body. At this time, the right-angled clamping plate of the first fixing base passes through the limiting groove, and the bottom side of the right-angled clamping plate of the second fixing base is flush with the bottom side of the jig body. The second spring in the second inner cavity acts on the second piston. At this time, the limiting rod is stuck in the limiting hole of the right-angled clamping plate of the second fixing base to limit the second fixing base. Then, the jig body is placed on the battery pack, and the contact plates on the first fixing base are respectively in contact with the side walls of the battery pack. The jig body is moved, and the side walls of the battery pack act on the contact plates. The connecting rod drives the second piston to move in the second inner cavity, compressing the second spring until the contact plate is completely embedded in the accommodating groove. At this time, the air in the second inner cavity is pressed into the first inner cavity, driving the first piston to move, compressing the first spring, and the limiting rod is separated from the limiting hole. At this time, the second fixed base falls in the limiting groove and is stuck at the corner of the battery pack, so that the jig and the battery pack are limited to each other. The aluminum palladium is limited by the welding groove, and then the aluminum palladium is welded to the battery pack.

[0014] The beneficial effects of the present invention are as follows: the jig is fixed on the battery pack, and the jig and the battery pack are mutually limited by the first fixed clamping seat and the second fixed clamping seat, which can effectively prevent mutual movement, reduce the welding tolerance of aluminum palladium, and ensure that each aluminum palladium is in the same position each time it is welded;

[0015] It can effectively prevent short circuits in series battery packs. The first fixed holder and the second fixed holder can effectively limit the relative movement of the battery pack and the fixture. The lower surface of the fixture is consistent with the positive and negative electrode surfaces of the battery pack, which most effectively limits the movement of aluminum palladium. It has high safety performance and good insulation properties. The material can prevent damage to the welding battery pack caused by malfunction of the welding machine. The material is flame retardant, highly efficient, and has a high fault tolerance rate, which can effectively prevent the occurrence of cold welding during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the fixture of the present invention;

[0018] Figure 3 It is a partial cross-sectional view of the entire present invention;

[0019] Figure 4 For the present invention Figure 3 A partial enlarged view of area A in the middle;

[0020] Figure 5For the present invention Figure 3 A partial enlarged view of area B in the middle.

[0021] Legend:

[0022] 1. Fixture body; 2. First fixed base; 3. Second fixed base; 4. Limiting groove; 5. Welding groove; 6. Right-angle clamping plate; 7. Right-angle baffle; 8. First inner cavity; 9. First spring; 10. First piston; 11. Limiting rod; 12. Second inner cavity; 13. Second spring; 14. Second piston; 15. Connecting rod; 16. Contact plate; 17. Receiving groove; 18. Limiting hole. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Specific examples are given below.

[0025] See also Figures 1 to 5 A novel square battery pack aluminum-palladium welding jig includes a jig body 1, a first fixed base 2, and a second fixed base 3. The jig body 1 is provided with limiting slots 4 on all sides, and one first fixed base 2 and three second fixed bases 3 are installed in each of the four limiting slots 4. The jig body 1 is provided with a welding slot 5 for limiting the aluminum-palladium position.

[0026] The first fixed base 2 and the second fixed base 3 both include a right-angled card plate 6, and the right-angled card plate 6 passes through the limiting groove 4, and a right-angled baffle 7 is installed on each right-angled card plate 6. The jig material is glass fiber board, which has excellent flame retardancy and prevents accidents during welding;

[0027] Three first inner cavities 8 are provided inside the fixture body 1, and a first spring 9 is installed in each first inner cavity 8. The first spring 9 is connected to the first piston 10, and a limiting rod 11 is installed on the first piston 10 and passes through the first inner cavity 8. Two second inner cavities 12 are provided inside the right-angled card plate 6 of the first fixed card seat 2, and the outer end of the second inner cavity 12 is conductively connected to the end of the first inner cavity 8 near the limiting groove 4. A second spring 13 is installed inside the second inner cavity 12, and the second spring 13 is connected to the second piston 14. A connecting rod 15 is installed on the second piston 14, and the two connecting rods 15 are arranged vertically. The outer end of the connecting rod 15 is located outside the right-angled card plate 6 and a contact plate 16 is installed. An accommodating groove 17 is provided on the inner wall of the right-angled card plate 6 of the first fixed card seat 2, and the accommodating groove 17 is adapted to the contact plate 16. A limiting hole 18 is provided on the right-angled card plate 6 of the second fixed card seat 3, and the limiting hole 18 is adapted to the limiting rod 11. When the fixture body 1 is placed on the battery pack, The contact plates 16 on the first fixed card seat 2 are respectively contacted with the side walls of the battery pack, and the jig body 1 is moved. The side walls of the battery pack act on the contact plate 16, and the second piston 14 is driven to move in the second inner cavity 12 through the connecting rod 15, compressing the second spring 13 until the contact plate 16 is completely embedded in the accommodating groove 17. At this time, the air in the second inner cavity 12 is pressed into the first inner cavity 8, driving the first piston 10 to move, compressing the first spring 9, and the limiting rod 11 is separated from the limiting hole 18. At this time, the second fixed card seat 3 falls in the limiting groove 4 and is stuck at the corner of the battery pack, so that the jig and the battery pack are limited to each other, and when the jig is separated from the battery pack, the right-angled card plate 6 of the second fixed card seat 3 is moved up to the bottom side and flush with the bottom side of the jig body 1. At this time, under the action of the first spring 9 and the second spring 13, the contact plate 16 moves out of the accommodating groove 17, and the connecting rod 15 is stuck in the limiting hole 18 of the right-angled card plate 6 of the second fixed card seat 3, thereby fixing the second fixed card seat 3.

[0028] The specific operation steps of the welding fixture are as follows:

[0029] The first fixed card seat 2 and the second fixed card seat 3 are both installed in the limiting groove 4 of the fixture body 1. At this time, the right-angled card plate 6 of the first fixed card seat 2 passes through the limiting groove 4, and the bottom side of the right-angled card plate 6 of the second fixed card seat 3 is flush with the bottom side of the fixture body 1. The second spring 13 of the second inner cavity 12 acts on the second piston 14. At this time, the limiting rod 11 is inserted into the limiting hole 18 of the right-angled card plate 6 of the second fixed card seat 3 to limit the second fixed card seat 3. Then, the fixture body 1 is placed on the battery pack, and the contact plates 16 on the first fixed card seat 2 are respectively in contact with the side walls of the battery pack. Move the fixture. With main body 1, the side wall of the battery pack acts on the contact plate 16, and drives the second piston 14 to move in the second inner cavity 12 through the connecting rod 15, compressing the second spring 13 until the contact plate 16 is completely embedded in the accommodating groove 17. At this time, the air in the second inner cavity 12 is pressed into the first inner cavity 8, driving the first piston 10 to move, compressing the first spring 9, and the limiting rod 11 is separated from the limiting hole 18. At this time, the second fixed holder 3 falls in the limiting groove 4 and is stuck at the corner of the battery pack, so that the fixture and the battery pack limit each other, and the aluminum palladium is limited by the welding groove 5, and then the aluminum palladium is welded to the battery pack.

[0030] The jig is fixed on the battery pack, and the first fixed clamp 2 and the second fixed clamp 3 limit the jig and the battery pack to each other, which can effectively prevent mutual movement, reduce the welding tolerance of aluminum palladium, and ensure that each aluminum palladium is in the same position each time it is welded;

[0031] It can effectively prevent short circuits in series connection of battery packs. The first fixed holder 2 and the second fixed holder 3 can effectively limit the relative movement of the battery pack and the fixture. The lower surface of the fixture is consistent with the positive and negative electrode surfaces of the battery pack, which most effectively limits the movement of aluminum palladium. It has high safety performance and good insulation properties. The material can prevent damage to the welding battery pack caused by failure of the welding machine. The material is flame retardant, highly efficient, and has a high fault tolerance rate, which can effectively prevent the occurrence of cold welding and the like during the welding process.

[0032] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A new square battery pack aluminum-palladium welding fixture, characterized in that: The jig comprises a jig body (1), a first fixed clamping seat (2) and a second fixed clamping seat (3); the jig body (1) is provided with limiting grooves (4) on all sides, and one first fixed clamping seat (2) and three second fixed clamping seats (3) are respectively installed in the four limiting grooves (4); the jig body (1) is provided with a welding groove (5) for aluminum palladium limiting; The first fixed card seat (2) and the second fixed card seat (3) both include right-angled card plates (6), and the right-angled card plates (6) pass through the limiting slots (4), and a right-angled baffle (7) is installed on each right-angled card plate (6); Two second inner chambers (12) are provided inside the right-angled card plate (6) of the first fixed card seat (2), and the outer end of the second inner chamber (12) is conductively connected to the end of the first inner chamber (8) near the limit groove (4), a second spring (13) is installed inside the second inner chamber (12), and the second spring (13) is connected to the second piston (14), a connecting rod (15) is installed on the second piston (14), and the two connecting rods (15) are vertically arranged, the outer end of the connecting rod (15) is located outside the right-angled card plate (6) and a contact plate (16) is installed, and a receiving groove (17) is provided on the inner wall of the right-angled card plate (6) of the first fixed card seat (2), and the receiving groove (17) is adapted to the contact plate (16); The first fixed card seat (2) and the second fixed card seat (3) are both installed in the limiting groove (4) of the fixture body (1). At this time, the right-angled card plate (6) of the first fixed card seat (2) passes through the limiting groove (4), and the bottom side of the right-angled card plate (6) of the second fixed card seat (3) is flush with the bottom side of the fixture body (1). The second spring (13) of the second inner cavity (12) acts on the second piston (14). At this time, the limiting rod (11) is inserted into the limiting hole (18) of the right-angled card plate (6) of the second fixed card seat (3), limiting the second fixed card seat (3). Then, the fixture body (1) is placed on the battery pack, and the contact plates (16) on the first fixed card seat (2) are respectively in contact with the side walls of the battery pack. , move the fixture body (1), the side wall of the battery pack acts on the contact plate (16), and drives the second piston (14) to move in the second inner cavity (12) through the connecting rod (15), compressing the second spring (13) until the contact plate (16) is completely embedded in the accommodating groove (17). At this time, the air in the second inner cavity (12) is pressed into the first inner cavity (8), driving the first piston (10) to move, compressing the first spring (9), and the limiting rod (11) is separated from the limiting hole (18). At this time, the second fixed seat (3) falls in the limiting groove (4) and is stuck at the corner of the battery pack, so that the fixture and the battery pack are limited to each other, and the aluminum palladium is limited by the welding groove (5), and then the aluminum palladium and the battery pack are welded.

2. A novel square battery pack aluminum-palladium welding jig according to claim 1, characterized in that: Three first inner cavities (8) are provided inside the fixture body (1), and a first spring (9) is installed in each of the first inner cavities (8). The first spring (9) is connected to a first piston (10), and a limiting rod (11) is installed on the first piston (10) and passes through the first inner cavity (8).

3. The novel square battery pack aluminum-palladium welding jig according to claim 2 is characterized in that: A limiting hole (18) is provided on the right-angled clamping plate (6) of the second fixed clamping seat (3), and the limiting hole (18) is adapted to the limiting rod (11).

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