Alignment bonding pad suitable for hot bar welding and acquisition piece

Abstract

The counterpoint bonding pad comprises a PCBA bonding pad and an FPC bonding pad, the lower end face of the FPC bonding pad is concavely provided with a containing groove, two sides of a groove opening of the containing groove are provided with first limiting identification grooves, the other two sides of the groove opening of the containing groove are provided with second limiting identification grooves, the groove bottom of the containing groove is concavely provided with a first tin penetrating hole, and the groove bottom of the containing groove is provided with a second tin penetrating hole. The PCBA welding disc is provided with a second tin penetrating hole corresponding to the first tin penetrating hole, and the second tin penetrating hole penetrates through the PCBA welding disc. The PCBA welding disc is arranged in the containing groove. According to the utility model, the PCBA welding disc and the FPC welding disc are arranged at the welding part of the CBA board and the FPC board, and the first positioning hole and the second positioning hole are aligned with each other, so that the detectability of the offset of the welding discs between the CBA board and the FPC board after welding is effectively solved, and the alignment condition and the offset of the welding discs between the CBA board and the FPC board can be effectively and quickly judged through external inspection equipment or manual work; and the reliability of a welded product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a butt welding pad and a collecting piece applicable to hotbar welding. Background Technique

[0002] In recent years, with the country's strong promotion of the development of new energy vehicles, it has greatly driven the development of power batteries, and at the same time, higher requirements have been put forward for battery modules.

[0003] At present, with the rapid development of new energy battery modules, the client has diversified the module structure design. The pads between the FPC and the PCB are welded by hotbar welding to make the circuits of the two conduct. In this process, only the two fixed holes on both sides are used for alignment, and the offset of the pads between the two cannot be detected.

[0004] Therefore, there is an urgent need to provide a technical solution for the structure of the battery module collecting piece to solve the above problems. Summary of the Invention

[0005] In order to overcome the disadvantages and deficiencies in the prior art, the purpose of the utility model is to provide a butt welding pad and a collecting piece applicable to hotbar welding. By setting a PCBA welding pad and an FPC welding pad at the welding place between the CBA board and the FPC board, as well as a first positioning hole and a second positioning hole that are aligned with each other, the detectability of the offset of the pads between the two after welding is effectively solved. The alignment situation and offset of the pads of the two can be effectively and quickly judged through an external inspection device or manually, ensuring the reliability of the product after welding.

[0006] The purpose of the utility model is realized through the following technical solutions: a butt welding pad applicable to hotbar welding, including a PCBA welding pad and an FPC welding pad. A receiving groove is recessed on the lower end surface of the FPC welding pad. First limiting identification grooves are opened on both sides of the mouth of the receiving groove, and second limiting identification grooves are opened on the other two sides of the mouth of the receiving groove. A plurality of first tin-penetrating holes are further recessed on the bottom of the receiving groove. The PCBA welding pad is provided with second tin-penetrating holes penetrating through the PCBA welding pad corresponding to the first tin-penetrating holes, and the PCBA welding pad is arranged in the receiving groove.

[0007] The utility model also discloses a collecting piece provided with a butt welding pad. The collecting piece includes a PCBA board, an FPC board and a plurality of butt welding pads. A first overlapping area is provided on one side surface of the PCBA board, and the PCBA welding pad is arranged in the first overlapping area. The FPC board is provided with a second overlapping area corresponding to the first overlapping area, and the FPC welding pad is arranged in the second overlapping area and corresponds to the PCBA welding pad in the first overlapping area. The CBA board and the FPC board are press-fitted and welded through the first overlapping area and the second overlapping area.

[0008] Further, a group of first positioning holes penetrating through both side surfaces of the PCBA board are provided on the PCBA board, and the first positioning holes are respectively located at both ends of the first overlapping area.

[0009] Further, the FPC board is provided with second positioning holes penetrating through both side surfaces of the FPC board corresponding to the first positioning holes, and the second positioning holes are respectively located at both ends of the second overlapping area.

[0010] Further, a plurality of mounting grooves are recessed in the second overlapping area, and the FPC welding pads are respectively arranged in the mounting grooves.

[0011] The beneficial effects of the present utility model are as follows: By providing PCBA welding pads and FPC welding pads at the welding joint between the CBA board and the FPC board, as well as mutually aligned first positioning holes and second positioning holes, the present utility model effectively solves the detectability of the offset amount of the welding pads between the two after welding, and can effectively and quickly judge the alignment situation and offset amount of the welding pads of the two through an external inspection device or manually, ensuring the reliability of the product after welding. Description of the Drawings

[0012] Figure 1 is a schematic structural view of the alignment welding pads of the present utility model;

[0013] Figure 2 is a schematic structural view of the FPC welding pads of the present utility model;

[0014] Figure 3 is a perspective view of the acquisition member of the present utility model;

[0015] Figure 4 is a perspective view of the acquisition member of the present utility model from another perspective;

[0016] Figure 5 is an exploded schematic view of the acquisition member of the present utility model;

[0017] Figure 6 is a schematic structural view of the PCBA board of the present utility model;

[0018] Figure 7 is a schematic structural view of the FPC board of the present utility model.

[0019] The reference signs are: 1 - PCBA board, 11 - first overlapping area, 12 - first positioning hole, 2 - FPC board, 21 - second overlapping area, 22 - mounting groove, 23 - second positioning hole, 3 - PCBA welding pad, 31 - second solder penetration hole, 4 - FPC welding pad, 41 - accommodating groove, 42 - first limit marking groove, 43 - second limit marking groove, 44 - first solder penetration hole. Detailed Embodiment

[0020] For the convenience of understanding by those skilled in the art, the following will further explain the present utility model in conjunction with embodiments and the attached Figure 1-7 drawings. The content mentioned in the embodiments does not limit the present utility model.

[0021] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element.

[0022] When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, 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 to the present application.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0025] In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0026] Embodiment 1

[0027] See Figure 1-2 , a butt welding pad applicable to hotbar welding, including a PCBA welding pad 3 and an FPC welding pad 4. A receiving groove 41 is recessed on the lower end surface of the FPC welding pad 4. First limiting identification grooves 42 are opened on both sides of the notch of the receiving groove 41. Second limiting identification grooves 43 are opened on the other two sides of the notch of the receiving groove 41. A plurality of first solder penetration holes 44 are further recessed on the bottom of the receiving groove 41. The PCBA welding pad 3 is provided with second solder penetration holes 31 penetrating through the PCBA welding pad 3 corresponding to the first solder penetration holes 44. The PCBA welding pad 3 is disposed in the receiving groove 41.

[0028] The alignment pads in this embodiment are composed of a PCBA welding pad 3 and an FPC welding pad 4 that cooperate with each other. During use, the PCBA welding pad 3 is embedded in the accommodation groove 41 of the FPC welding pad 4 for hot pressing and hot bar welding. After welding, the solder volume between the two pads is checked through the second solder penetration hole 31, the first limit marking groove 42, and the second limit marking groove 43 to ensure the reliability after welding.

[0029] Embodiment 2

[0030] See Figure 1-7 , a collection piece provided with alignment pads, the collection piece includes a PCBA board 1, an FPC board 2, and a plurality of alignment pads. One side of the PCBA board 1 is provided with a first overlapping area 11, the PCBA welding pad 3 is arranged in the first overlapping area 11, the FPC board 2 is provided with a second overlapping area 21 corresponding to the first overlapping area 11, the FPC welding pad 4 is arranged in the second overlapping area 21 and corresponds to the PCBA welding pad 3 in the first overlapping area 11, and the CBA board and the FPC board 2 are press-fitted and welded through the first overlapping area 11 and the second overlapping area 21.

[0031] In this embodiment, a plurality of installation grooves 22 are recessed in the second overlapping area 21, and the FPC welding pads 4 are respectively arranged in the installation grooves 22. The PCBA board 1 is provided with a set of first positioning holes 12 penetrating through both sides of the PCBA board 1, and the first positioning holes 12 are respectively located at both ends of the first overlapping area 11; the FPC board 2 is provided with second positioning holes 23 penetrating through both sides of the FPC board 2 corresponding to the first positioning holes 12, and the second positioning holes 23 are respectively located at both ends of the second overlapping area 21.

[0032] In this embodiment, by providing a PCBA welding pad 3 and an FPC welding pad 4 at the welding joint between the CBA board and the FPC board 2, as well as a first positioning hole 12 and a second positioning hole 23 that are aligned with each other, the detectability of the pad offset between the two after welding is effectively solved. The pad alignment and offset of the two can be effectively and quickly judged by an external inspection device or manually, ensuring the reliability of the product after welding. During welding, first, the PCBA welding pad 3 is arranged in the first overlapping area 11, the FPC welding pad 4 is embedded in the installation groove 22 of the second overlapping area 21, and then the FPC board 2 is positioned on the tooling by using the second positioning hole 23. The first overlapping area 11 of the PCBA board 1 and the second overlapping area 21 of the FPC board 2 need to be completely adhered. Then, an inspection device is used to observe whether the position of the PCBA pad exceeds the first limit marking groove 42 and / or the second limit marking groove 43 through the first limit marking groove 42 and / or the second limit marking groove 43 on the FPC pad, and the pad offset can be calculated; after the inspection is okay, hot pressing and hotbar welding are carried out. After welding, the solder volume situation of the pads between the two is checked through the first solder penetration hole 44 and / or the first solder penetration hole 44, as well as the first limit marking groove 42 and / or the second limit marking groove 43 to ensure the reliability after welding, effectively solving the detectability of the pad offset between the two after welding.

[0033] The above embodiment is a preferred implementation solution of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the present utility model is within the protection scope of the present utility model.

Claims

1. A butt welding pad applicable to hotbar welding, characterized in that: It includes a PCBA soldering pad and an FPC soldering pad. A receiving groove is recessed on the lower end surface of the FPC soldering pad. First limiting identification grooves are formed on both sides of the notch of the receiving groove. Second limiting identification grooves are formed on the other two sides of the notch of the receiving groove. A plurality of first solder-penetrating holes are further recessed on the bottom of the receiving groove. The PCBA soldering pad is provided with second solder-penetrating holes penetrating through the PCBA soldering pad corresponding to the first solder-penetrating holes. The PCBA soldering pad is arranged in the receiving groove.

2. A collecting member provided with the butt pads as described in claim 1, characterized in that: The collecting component includes a PCBA board, an FPC board and a plurality of alignment soldering pads. A first overlapping area is provided on one side surface of the PCBA board. The PCBA soldering pad is arranged in the first overlapping area. The FPC board is provided with a second overlapping area corresponding to the first overlapping area. The FPC soldering pad is arranged in the second overlapping area and corresponds to the PCBA soldering pad in the first overlapping area. The CBA board and the FPC board are press-fitted and welded through the first overlapping area and the second overlapping area.

3. The acquisition component with alignment pads according to claim 2, characterized in that: The PCBA board is provided with a group of first positioning holes penetrating through both side surfaces of the PCBA board. The first positioning holes are respectively located at both ends of the first overlapping area.

4. The acquisition component with alignment pads according to claim 3, characterized in that: The FPC board is provided with second positioning holes penetrating through both side surfaces of the FPC board corresponding to the first positioning holes. The second positioning holes are respectively located at both ends of the second overlapping area.

5. The acquisition component with alignment pads according to claim 2, characterized in that: A plurality of installation grooves are recessed in the second overlapping area. The FPC soldering pads are respectively arranged in the installation grooves.

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