Ultrasonic welding tool

Abstract

The utility model discloses an ultrasonic welding tool which comprises a base, at least one welding seat, an ultrasonic welding head and an ultrasonic welding head. And the cover plate is arranged on the base. Compared with the prior art, the ultrasonic welding tool is stable in machining, high efficiency is guaranteed, and welding precision and welding quality are also guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of welding equipment, in particular to an ultrasonic welding tool. Background Art

[0002] CCS (Cells Contact System, battery collection module) integrates the conductive bar, control circuit (voltage, temperature collection) and other components in the battery module into one module to realize functions such as high-voltage series and parallel connection of battery cells, temperature collection, voltage collection, and overcurrent fusing. It has the characteristics of high integration, good reliability, compact structure and small size. It can save space, facilitate automated assembly, and is suitable for large-scale mass production. It is widely used in new energy vehicles and energy storage equipment.

[0003] The ultrasonic welding process in CCS achieves electrical connection and battery data collection by welding the FPC / FCC to the aluminum bar. Unlike traditional laser welding, which achieves electrical connection by welding a nickel sheet (on the FPC) to the aluminum bar, ultrasonic welding directly welds the FPC / FCC to the aluminum bar (eliminating the nickel sheet) to achieve electrical connection.

[0004] When ultrasonic welding is currently used to produce products, copper terminals are prone to warping, causing the pads to separate from the aluminum bars and prevent them from fitting together flatly. After welding, cold solder joints and biased solder joints are prone to occur, affecting welding accuracy and quality.

[0005] Therefore, based on the above problems, it is necessary to improve the existing ultrasonic welding tooling to solve the above problems. Utility Model Content

[0006] In response to the problems existing in the above-mentioned prior art, the utility model has stable processing and ensures high efficiency, and also guarantees welding precision and welding quality.

[0007] In order to solve the above technical problems, the technical solution of the utility model is:

[0008] An ultrasonic welding tool, comprising:

[0009] A base, wherein at least one welding seat is provided on the base;

[0010] At least one cover plate is disposed on the base.

[0011] Preferably, a first positioning hole and a second positioning hole are respectively provided on both sides of the cover plate.

[0012] Preferably, the first positioning hole is a pin positioning hole, and the second positioning hole is a bolt positioning hole.

[0013] Preferably, the cover plate is provided with a first avoidance portion and a second avoidance portion.

[0014] Preferably, the cover plate has a thickness of 5-6 mm.

[0015] Preferably, the cover plate is divided into sections.

[0016] Preferably, a locking block is provided at the edge of the base.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Its processing is stable and efficient, and it also guarantees welding accuracy and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the ultrasonic welding tooling;

[0020] Figure 2 Schematic diagram of the structure of the cover;

[0021] Figure 3 A schematic diagram of the base structure. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3 , the specific implementation methods of the utility model are further described in detail to make the technical solution of the utility model easier to understand and grasp.

[0023] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "end", "front", "back", "middle", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection, etc. commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0025] like Figure 1-3 As shown, an ultrasonic welding tool comprises:

[0026] Base 4, base 4 is used to carry CCS product 3 and fix cover plate 2. At least one welding seat 41 is provided on base 4. Each welding seat 41 corresponds to an ultrasonic welding point. The welding seat 41 is used to place copper terminals. The welding seat 41 matches the ultrasonic welding head and is used for precise welding of copper terminals. The welding seat 41 is set according to the number of copper terminals.

[0027] The copper terminal referred to in this application is an abbreviation for FDC / FPC in FCC. FCC (Flexible Flat Cable Connector Flexible Die-cut Circuit) is a new type of signal acquisition component that uses FFC and FPC / FDC to connect, and is an optimization solution for the FFC process. The main body of the FCC signal acquisition component is FFC, and a window is opened on the FFC for soldering FPC / FDC. Ultrasonic welding of FPC / FDC to aluminum bars replaces laser welding of nickel sheets to aluminum bars to meet voltage sampling requirements, achieving nickel-free voltage sampling and reducing costs.

[0028] At least one cover plate 2 is provided on the base 4. Specifically, the cover plate 2 is provided on the copper terminal to fix the copper terminal on the welding seat 41. The cover plate 2 is provided according to the number of copper terminals. By providing the cover plate 2, the problem that the copper terminal is easily warped during ultrasonic welding is solved, so that the processing is stable and the efficiency is ensured, and the welding accuracy and welding quality are also guaranteed. In this embodiment, the cover plate 2 is provided in sections, which reduces tooling materials and is conducive to reducing the production cost of samples.

[0029] The cover plate is provided with a first positioning hole 21 and a second positioning hole 24 on both sides. Specifically, the first positioning hole 21 is a pin positioning hole, and the second positioning hole 24 is a bolt positioning hole. The cover plate 2 is fixed to the base 4 by cooperating with the pin 1 and screws installed on the base 4, solving the problem of copper terminals easily warping during welding.

[0030] The cover plate 2 is provided with a first avoidance portion 22 and a second avoidance portion 23. In this embodiment, the first avoidance portion 22 is a heat rivet stud avoidance area, and the second avoidance portion 23 is an NTC avoidance area. By providing the first avoidance portion 22 and the second avoidance portion 23, the NTC and the heat rivet stud are prevented from being damaged by force due to the pressing of the cover plate 2 and the base 4 during the welding process. During ultrasonic welding, the cover plate 2 flattens the copper terminal, and only the copper terminal pad and part of the fuse in the CCS product 3 are exposed. The total length of the exposed part is about 9-10 mm. If the exposed size is too long, the cover plate 2 cannot flatten the copper terminal. If the exposed size is too short, the cover plate 2 will cover the copper terminal pad, thereby affecting the ultrasonic welding process. Therefore, this application sets the exposed part to 9-10 mm to meet the requirements of ultrasonic welding process.

[0031] Since the cover plate 2 will interfere with the ultrasonic horn if it is too thick, causing the ultrasonic horn to be unable to make normal contact, the present application sets the thickness of the cover plate 2 to 5-6 mm, which can ensure normal contact of the ultrasonic horn.

[0032] The base 4 is provided with a locking block (not shown) at the edge thereof, that is, a locking block is provided on the recessed portion 42 at the edge of the base 4 for fixing the CCS product 3 .

[0033] The technical effects of this utility model are mainly reflected in the following aspects:

[0034] Its processing is stable and efficient, and it also guarantees welding accuracy and quality.

[0035] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. An ultrasonic welding tool, characterized in that: include: A base, wherein at least one welding seat is provided on the base; At least one cover plate is disposed on the base.

2. The ultrasonic welding tool according to claim 1, characterized in that: A first positioning hole and a second positioning hole are respectively provided on both sides of the cover plate.

3. The ultrasonic welding tool as claimed in claim 2, characterized in that: The first positioning hole is a pin positioning hole, and the second positioning hole is a bolt positioning hole.

4. The ultrasonic welding tool according to claim 1, characterized in that: The cover plate is provided with a first avoidance portion and a second avoidance portion.

5. The ultrasonic welding tool as claimed in claim 1, characterized in that: The cover plate has a thickness of 5-6 mm.

6. The ultrasonic welding tool according to claim 1, characterized in that: The cover plate is arranged in sections.

7. The ultrasonic welding tool as claimed in claim 1, characterized in that: A locking block is provided at the edge of the base.

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