High-frequency pulse thermocompression welding head

Abstract

The utility model provides a high-frequency pulse thermocompression welding head which comprises a positive plate and a negative plate, the positive plate and the negative plate of the thermocompression welding head are separated through a gap, the far end of the positive plate and the far end of the negative plate of the thermocompression welding head are connected with each other through a connecting part, and the far end of the connecting part is connected with a welding head. Mounting parts are arranged at the near ends of the thermocompression welding head positive plate and the thermocompression welding head negative plate, the thermocompression welding head connecting part comprises a temperature sensing part, the temperature sensing part of the thermocompression welding head is connected with a temperature sensing wire, the welding head is detachably connected with the connecting part, and the welding head can be quickly replaced for adaptation according to different welding objects. And meanwhile, the overall thermal conductivity and wear resistance can be improved by arranging the material of the welding surface.

Description

Technical Field

[0001] This utility model relates to the field of hot-press welding head technology, and in particular to a high-frequency pulse hot-press welding head. Background Technology

[0002] In existing electronic components, a common welding method (pulse thermocompression welding) is used to connect two components. This welding method utilizes the Joule heat generated when a pulsed current passes through high-resistivity materials such as molybdenum or special titanium alloys to melt the materials being welded, thus achieving a heat connection. A thermocouple (temperature sensing wire) is typically connected to the welding area to provide real-time feedback on the welding temperature and ensure the accuracy of the set temperature. The thermocompression welding head made of a high-resistivity heating material is called a pulse thermocompression welding head.

[0003] In the prior art, the welding head of the thermocompression welding head has a fixed shape and is prone to wear and tear. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this utility model provides a high-frequency pulse hot-press welding head, comprising a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are separated by a gap, and the positive electrode and the negative electrode are connected to each other at their distal ends by a connecting part, wherein a welding head is connected to the distal end of the connecting part, and an installation part is provided at the proximal end of the positive electrode and the negative electrode, wherein the connecting part includes a temperature sensing part, and a temperature sensing wire is connected to the temperature sensing part.

[0005] In one embodiment, the positive electrode and the negative electrode have a narrowing structure that gradually tapers from the proximal end toward the distal end towards the connection portion, and the welding head is installed at the narrowest width position of the narrowing structure.

[0006] In one embodiment, the welding head is fixedly or detachably connected to the connecting portion.

[0007] In one embodiment, the temperature sensing element includes solder joints for fixing the temperature sensing wire, which includes a positive wire and a negative wire.

[0008] In one embodiment, the welding head is detachably connected to the connecting portion via a quick-release structure.

[0009] In one embodiment, the positive electrode, the connecting portion of the negative electrode, and the welding head all include a surface electroplating layer.

[0010] In one embodiment, the surface electroplating layer is any one or more of a nickel plating layer, a tin plating layer, or a chromium plating layer.

[0011] In one embodiment, the mounting portion is provided with mounting holes or mounting grooves for screw fixing.

[0012] In one embodiment, the distal end of the welding head includes a welding surface, which is any one of rectangular, circular, S-shaped, U-shaped, and dot-matrix shapes.

[0013] In one embodiment, the welding surface is provided with a diamond or graphene coating.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides a high-frequency pulse hot-press welding head, including a positive electrode and a negative electrode. The positive electrode and the negative electrode of the hot-press welding head are separated by a gap. The positive electrode and the negative electrode of the hot-press welding head are connected to each other at their distal ends by a connecting part, and a welding head is connected to the distal end of the connecting part. An installation part is provided at the proximal end of the positive electrode and the negative electrode of the hot-press welding head. The connecting part of the hot-press welding head includes a temperature sensing part, and a temperature sensing wire is connected to the temperature sensing part. The welding head and the connecting part are detachably connected, and the welding head can be quickly replaced according to different welding objects. At the same time, the overall thermal conductivity and wear resistance can be improved by setting the material of the welding surface. Attached Figure Description

[0015] Figure 1 This is a front view of one embodiment of the present invention.

[0016] Figure 2 This is a perspective view of the present invention.

[0017] Figure 3 This is a schematic diagram of the mounting slot structure in one embodiment of the present invention.

[0018] Figure 4 This is a diagram of the linear narrowing structure of this utility model. Detailed Implementation

[0019] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0020] The technical solutions of the embodiments of this application will be clearly and comprehensively described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use this invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this invention can be implemented without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of this invention with unnecessary detail. Therefore, this invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles disclosed in this application.

[0023] Please see Figures 1-4 This utility model provides a high-frequency pulse hot press welding head, including a positive electrode 1 and a negative electrode 2. The positive electrode 1 and the negative electrode 2 are separated by a gap 3. The positive electrode 1 and the negative electrode 2 are connected to each other at their distal ends by a connecting part 5, and a welding head 4 is connected to the distal end of the connecting part 5. An installation part 8 is provided at the proximal end of the positive electrode 1 and the negative electrode 2. The connecting part 5 includes a temperature sensing part 6, and a temperature sensing wire 7 is connected to the temperature sensing part 6. The installation part 8 is used to fix and install the head on a pulse hot press welding machine. During operation, the pulse hot press welding machine contacts the welding head 4 with the electronic component to be welded. The pulse current provided by the pulse hot press welding machine passes through the installation part 8 and the connecting part 5, and then flows through the welding head 4, causing the welding head 4 to heat up instantly and evenly, thereby instantly melting the reserved solder or solder paste on the electronic component. After the reserved solder or solder paste cools down, the two electronic components become conductive and firmly connected, without the phenomenon of "cold solder joint", and the welding quality is good.

[0024] One end of each of the temperature sensing wires 7 is connected to the connecting part 5, and the other end of each of the temperature sensing wires 7 is provided with an electrical connector. By connecting to a temperature control device (not shown in the figure), the welding temperature of the connecting part 5 can be monitored.

[0025] The gap 3 divides the hot-press welding head into two parts: a positive electrode 1 and a negative electrode 2, preventing the hot-press welding head from being a closed ring. When the hot-press welding head is energized for welding, a short circuit only occurs at the connection part 5, thereby instantly generating high temperature.

[0026] In one embodiment, the positive electrode 1 and the negative electrode 2 form a narrowing structure 11 that gradually tapers from the proximal end toward the distal end towards the connecting portion 5, and the welding head 4 is installed at the narrowest width position of the narrowing structure 11. In this embodiment, the narrowing structure 11 facilitates the avoidance of the welding head 4 from touching other things during welding, thereby improving the convenience and safety of welding.

[0027] like Figure 1 The narrowing structure 11 provided in this application can be an arc-shaped narrowing, or it can be like... Figure 4 The straight line shown narrows.

[0028] In one embodiment, the welding head 4 is fixedly or detachably connected to the connecting part 5. The welding head 4 can be fixed or detachably configured. In the detachable configuration, the welding head 4 is detachably connected to the connecting part 5 via a quick-release structure. The quick-release mechanism can be a combination of a spring latch and a guide pin to achieve quick release of the welding head 4. Specifically, it may include a mounting base on the connecting part 5 and a welding module including the welding head 4. The mounting base includes a spring latch (e.g., with a high-temperature resistant spring), a guide pin, electrical contacts, and a ceramic heat insulation layer. The welding module includes a latch groove that matches the spring latch on the base, a guide hole that engages with the guide pin, a conductive interface (e.g., an elastic copper sheet), and a welding surface on the welding head 4. Spring-loaded latches are provided on both sides of the mounting base, and a corresponding groove is designed on the welding head; the guide pin ensures precise alignment. During operation, inserting the welding head aligns the guide pin, then pressing the latch automatically locks it in place; during disassembly, pressing the spring latch releases the latch, allowing it to be pulled out. The operation time is less than 3 seconds, it has strong vibration resistance, and is suitable for high-frequency replacement scenarios.

[0029] In one embodiment, preferably, two temperature sensing wires 7 are provided, each including a positive wire 71 and a negative wire 72. The temperature sensing part 6 includes solder joints for fixing the temperature sensing wires 7. Specifically, the temperature sensing wires 7 are K-shaped temperature sensing wires.

[0030] In one embodiment, the connecting portion 5 of the positive electrode 1 and the negative electrode 2, and the welding head 4 all include a surface electroplating layer. The surface electroplating layer is any one or more of a nickel plating layer, a tin plating layer, or a chromium plating layer.

[0031] In one embodiment, such as Figure 1 and Figure 3 As shown, the mounting part 8 is provided with mounting holes 82 or mounting grooves 81 for screw fixing. With the screws, the hot press welding head can be detachably and fixedly installed on the pulse hot press welding machine, which is convenient for installation.

[0032] In one embodiment, the distal end of the welding head 4 includes a welding surface, which can be any one of rectangular, circular, S-shaped, U-shaped, and dot matrix shapes. The welding head 4 can be quickly switched to meet the needs of multi-variety production and reduce equipment modification costs.

[0033] In one embodiment, the welding surface is coated with a diamond or graphene coating, which can extend the life of the welding head 4, reduce maintenance frequency, and support higher power pulse current to improve welding efficiency.

[0034] The advantages of this utility model are:

[0035] The welding head and the connecting part are detachably connected, and the welding head can be quickly replaced according to different welding objects. At the same time, the overall thermal conductivity and wear resistance can be improved by setting the material of the welding surface.

[0036] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A high frequency impulse heat press welding head, characterized by, The application relates to a battery, which comprises a positive electrode sheet and a negative electrode sheet, the positive electrode sheet and the negative electrode sheet are separated by a gap, the positive electrode sheet and the negative electrode sheet are connected by a connecting part at a far end, a welding head is connected to the far end of the connecting part, a mounting part is arranged at a near end of the positive electrode sheet and the negative electrode sheet, the connecting part comprises a temperature sensing part, and a temperature sensing wire is connected to the temperature sensing part.

2. The high frequency impulse induction head according to claim 1, wherein The positive electrode sheet and the negative electrode sheet are tapered from the near end to the far end and gradually shrink towards the connecting part, and the welding head is arranged at the narrowest position of the tapered structure.

3. The high frequency impulse induction head according to claim 2, wherein The welding head is fixedly or detachably connected to the connecting part.

4. The high frequency impulse induction head of claim 1, wherein, The temperature sensing part comprises a welding spot for fixing the temperature sensing wire, and the temperature sensing wire comprises a positive electrode wire and a negative electrode wire.

5. The high frequency impulse induction head as defined in claim 3, wherein, The welding head is detachably connected to the connecting part through a quick release structure.

6. The high frequency impulse induction head of claim 1, wherein, The positive electrode sheet, the negative electrode sheet, the connecting part and the welding head all comprise a surface electroplating layer.

7. The high frequency impulse induction head according to claim 6, characterized in that The surface electroplating layer is any one or more of a nickel plating layer, a tin plating layer or a chromium plating layer.

8. The high frequency impulse induction head of claim 1, wherein, The mounting part is provided with a mounting hole or a mounting groove for fixing a screw.

9. The high frequency impulse induction head of claim 1, wherein, The far end of the welding head comprises a welding surface, and the welding surface is any one of a rectangular shape, a circular shape, an S shape, a U shape and a dot matrix shape.

10. The high frequency impulse induction head according to claim 9, wherein The welding surface is provided with a diamond or graphene coating.

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