CCS laser welding false welding prevention device

Abstract

This application relates to a CCS laser welding anti-cold solder joint device and its usage method, and pertains to the technical field of welding batteries to terminals. It includes a pressure base with a pair of laser welding ports on it. A terminal block retaining groove is located on the lower side of the pressure base, directly below the laser welding ports. The laser welding ports correspond to the battery terminals. A pair of sliding rods with springs are mounted on the pressure base. An L-shaped connecting seat is slidably mounted on the sliding rods, with one end of the spring abutting against the pressure base and the other end abutting against the L-shaped connecting seat. The L-shaped connecting seat is mounted on a welding device. This application provides an anti-cold solder joint effect.

Description

Technical Field

[0001] This application relates to the field of battery and terminal welding technology, and in particular to a CCS laser welding anti-cold solder joint device and its usage method. Background Technology

[0002] With the development of technology, batteries are being used more and more widely. In order to enable batteries to discharge better, the terminals are usually welded to the battery posts. The initial welding method was to solder the battery posts to the terminals with solder. Solder is prone to melting at high temperatures, causing desoldering. With the advancement of technology, CCS laser welding is used to directly weld the nickel sheet to the battery electrode, increasing the weld strength. However, during the welding process, the nickel sheet of the terminal needs to be aligned with the battery post and pressed onto the battery post to achieve accurate welding. In the current CCS laser welding, a clamping component is usually installed on the laser welding equipment. The clamping component presses the larger electrode sheet onto the battery post to complete the welding. In the welding process of the smaller terminals, a clamp is usually used to hold the terminal, align the nickel sheet of the terminal with the battery post, and then the laser welding head emits a laser to weld the nickel sheet to the battery post. Because the nickel sheet on the terminal is not completely in contact with the battery post due to the clamping, it is easy to have a cold solder joint after welding. Summary of the Invention

[0003] The purpose of this application is to provide a CCS laser welding anti-fracture soldering device and its usage method to solve the technical problem of "fracture soldering between the nickel sheet of the terminal block and the battery post".

[0004] The CCS laser welding anti-false weld device provided in this application adopts the following technical solution: A CCS laser welding anti-false weld device includes a lower base, on which a pair of laser welding ports are provided. A terminal block slot is provided on the lower side of the lower base, located directly below the laser welding ports. The laser welding ports correspond to the battery terminals. A pair of sliding rods are installed on the lower base, and springs are installed on the sliding rods. An L-shaped connecting seat is slidably installed on the sliding rods. One end of the spring abuts against the lower base, and the other end abuts against the L-shaped connecting seat. The L-shaped connecting seat is installed on a welding device.

[0005] Optionally, the L-shaped connecting seat is provided with a sliding groove, and the pressing base is fixed with a slide rail, and the sliding groove is slidably connected to the slide rail.

[0006] Optionally, the L-shaped connector has a push-out chamfer on its lower side, which is close to the pressing base.

[0007] Optionally, the terminal block slot has an inclined chamfer at the end away from the laser welding port.

[0008] Optionally, the laser welding joint has an elongated structure; the upper opening of the laser welding joint is large, and the lower opening is small.

[0009] Optionally, the welding equipment includes a support base, an L-shaped support platform mounted on the support base, a telescopic rod mounted on the L-shaped support platform, an L-shaped connecting seat mounted at the lower end of the telescopic rod, a laser emitter mounted on the L-shaped support platform, a pair of laser welding heads mounted on the laser emitter, the laser welding heads being aligned with the laser welding joint; and a battery positioning groove mounted on the upper side of the support base.

[0010] In summary, this application includes at least one of the following beneficial technical effects:

[0011] 1. During the use of the CCS laser welding anti-fraud welding device, the lower side of the pressure base is placed against the upper end of the battery terminal. At this time, the electrode part of the terminal is inserted into the terminal retaining groove. The electrode part of the terminal is then in contact with the battery terminal. A downward pressure is applied to the L-shaped support platform. Under the action of the spring, the pressure base applies downward pressure to the nickel sheet. When the nickel sheet is pressed firmly onto the battery terminal, the laser welding equipment emits a laser beam. The laser passes through the laser welding port and welds the nickel sheet. During the welding process, the nickel sheet and the battery terminal are fully in contact, thereby effectively reducing the occurrence of fraudulent welding between the nickel sheet and the terminal. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0013] Figure 2 This is a schematic diagram of the pressure base structure according to an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the structure of the laser welding equipment according to an embodiment of this application;

[0015] In the diagram, 1. Pressing base; 2. Laser welding joint; 3. Terminal block slot; 31. Inclined chamfer; 4. Sliding rod; 5. Spring; 6. L-shaped connecting seat; 61. Push chamfer; 7. Sliding groove; 8. Sliding rail; 9. Support base; 91. L-shaped support platform; 92. Telescopic rod; 93. Laser emitter; 94. Laser welding head; 95. Battery positioning slot. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0017] Reference Figure 1The CCS laser welding anti-cold solder joint device includes a lower base 1 with a pair of laser welding ports 2. A terminal block slot 3 is located on the lower side of the lower base 1, directly below the laser welding ports 2, which correspond to the battery terminals. A pair of sliding rods 4 are mounted on the lower base 1, with springs 5 ​​mounted on each rod. An L-shaped connecting seat 6 is slidably mounted on each sliding rod 4. One end of the spring 5 abuts against the lower base 1, and the other end abuts against the L-shaped connecting seat 6. The L-shaped connecting seat 6 is installed on a welding equipment. During the use of the CCS laser welding anti-cold solder joint device... The lower side of the pressing base 1 is attached to the upper end of the battery terminal, and the laser welding port 2 is aligned with the terminal. At this time, the electrode part of the terminal is inserted into the terminal and snapped in place. 3. At this time, the electrode part of the terminal is attached to the battery terminal. Apply downward pressure to the L-shaped support platform. Under the action of the spring 5, the pressing base 1 applies downward pressure to the nickel sheet. When the nickel sheet is pressed tightly onto the battery terminal, the laser welding equipment emits a laser beam. The laser passes through the laser welding port 2 and welds the nickel sheet. During the welding process, the nickel sheet and the battery electrode are fully attached, thereby effectively reducing the possibility of incomplete welding between the nickel sheet and the terminal.

[0018] Reference Figure 1 The L-shaped connecting seat 6 has a sliding groove 7, and the lower pressing base 1 has a slide rail 8 fixed on it. The sliding groove 7 and the slide rail 8 are slidably connected. Through the cooperation of the sliding groove 7 and the slide rail 8, and with the action of the slide rod 4, the stability of the lower pressing base 2 during the up and down movement is improved.

[0019] Reference Figure 2 The L-shaped connector 6 has a push chamfer 61 on its lower side, which is close to the pressing base 1. By setting the push chamfer 61, the rigid impact between the L-shaped connector 6 and the battery can be effectively prevented, which would damage the battery. At the same time, during the pressing process of the L-shaped connector 6, the battery can be pushed so that the battery terminal is better aligned with the laser welding joint 2.

[0020] Reference Figure 1 , Figure 2 The terminal block slot 3 has an inclined chamfer 31 at the end away from the laser welding port 2; this increases the size of the opening of the terminal block slot 3, making it easier to insert the nickel plate part of the terminal block into the terminal block slot 3.

[0021] Reference Figure 1 The laser welding port 2 is a long strip structure; the L-shaped connector 6 remains aligned with the laser welding port 2 even after the electrode post is displaced during the battery displacement process; the upper opening of the laser welding port 2 is large and the lower opening is small, which facilitates the laser welding equipment to weld the nickel sheet to the battery electrode post.

[0022] Reference Figure 3The welding equipment includes a support base 9, an L-shaped support platform 91 mounted on the support base 9, a telescopic rod 92 mounted on the L-shaped support platform 91, an L-shaped connecting seat 6 mounted on the lower end of the telescopic rod 92, a laser emitter 93 mounted on the L-shaped support platform 91, a pair of laser welding heads 94 mounted on the laser emitter 93, and the laser welding heads 94 aligned with the laser welding port 2; a battery positioning groove 95 is mounted on the upper side of the support base 9; the battery is placed in the battery positioning groove 95, and the CCS laser welding anti-fragmentation device is moved up and down by controlling the telescopic rod 92 to make the pressing base 1 fit against the upper end of the battery. When the pressing base 1 presses the nickel sheet of the terminal block onto the battery post, the laser welding head 94 emits a laser beam to weld the nickel sheet to the battery post.

[0023] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A CCS laser welding anti-cold solder joint device, characterized in that: The device includes a pressure base (1), on which a pair of laser welding ports (2) are provided. A terminal block slot (3) is provided on the lower side of the pressure base (1). The terminal block slot (3) is located directly below the laser welding port (2). The laser welding port (2) corresponds to the battery terminal. A pair of sliding rods (4) are installed on the pressure base (1). A spring (5) is installed on the sliding rods (4). An L-shaped connector (6) is slidably installed on the sliding rods (4). One end of the spring (5) abuts against the pressure base (1), and the other end abuts against the L-shaped connector (6). The L-shaped connector (6) is installed on the laser welding equipment.

2. The CCS laser welding anti-cold solder joint device according to claim 1, characterized in that: The L-shaped connecting seat (6) is provided with a sliding groove (7), and the pressing base (1) is fixed with a slide rail (8). The sliding groove (7) and the slide rail (8) are slidably connected.

3. The CCS laser welding anti-cold solder joint device according to claim 1, characterized in that: The L-shaped connector (6) has a push chamfer (61) on its lower side, and the push chamfer (61) is close to the pressing base (1).

4. The CCS laser welding anti-cold solder joint device according to claim 1, characterized in that: The terminal block slot (3) has an inclined chamfer (31) at one end away from the laser welding port (2).

5. The CCS laser welding anti-cold solder joint device according to claim 3, characterized in that: The laser welding port (2) has a long strip structure; the upper opening of the laser welding port (2) is large and the lower opening is small.

6. The CCS laser welding anti-cold solder joint device according to claim 1, characterized in that: The welding equipment includes a support base (9), an L-shaped support platform (91) is installed on the support base (9), a telescopic rod (92) is installed on the L-shaped support platform (91), an L-shaped connecting seat (6) is installed at the lower end of the telescopic rod (92), a laser emitter (93) is installed on the L-shaped support platform (91), a pair of laser welding heads (94) are installed on the laser emitter (93), and the laser welding heads (94) are aligned with the laser welding port (2); a battery positioning groove (95) is installed on the upper side of the support base (9).

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