阅读说明：本技术 一种具有防护缓冲结构的电极 (Electrode with protection buffer structure ) 是由 杨阳 牛利刚 于 2020-11-04 设计创作，主要内容包括：本发明公开了一种具有防护缓冲结构的电极,电极包括连接单元和底座单元,连接单元和底座单元电气地和机械地连接,底座单元上具有缓冲结构,连接单元和底座单元分别具有伸出部,连接单元和底座单元的伸出部配合形成限制缓冲结构形变程度的限位结构。该电极的缓冲结构在起到抗震缓冲作用的同时不会发生过度形变,降低电极因意外冲击或应力疲劳而损坏的可能,提高电极的寿命,可应用于多种类型的电极上,可根据加工和装配要求灵活调整实施方式。(The invention discloses an electrode with a protective buffer structure, which comprises a connecting unit and a base unit, wherein the connecting unit is electrically and mechanically connected with the base unit, the base unit is provided with the buffer structure, the connecting unit and the base unit are respectively provided with a protruding part, and the protruding parts of the connecting unit and the base unit are matched to form a limiting structure for limiting the deformation degree of the buffer structure. The buffering structure of the electrode has the shock-proof buffering effect, meanwhile, excessive deformation cannot occur, the possibility that the electrode is damaged due to accidental impact or stress fatigue is reduced, the service life of the electrode is prolonged, the buffering structure can be applied to various types of electrodes, and the implementation mode can be flexibly adjusted according to the processing and assembling requirements.)

1. The utility model provides an electrode with protection buffer structure, includes linkage element (1) and base unit (2), its characterized in that linkage element (1) and base unit (2) are connected with machinery electrically, linkage element (1) have buffer (15) or base unit (2) have buffer (28), linkage element (1) have first extension (11), (12), base unit (2) have second extension (21), (22), limit structure that restriction buffer deformation degree was constituteed in the cooperation of first extension and second extension.

2. The electrode with protective buffer structure according to claim 1, characterized in that the base unit (2) is provided with a structure for guiding the connection unit (1); or the connecting unit (1) is provided with a structure which plays a role of guiding the base unit (2).

3. The electrode with protective and buffer structure according to claim 1, wherein the connection unit (1) further comprises a head connection part (13), a splicing part (16); the splice (16) has an upper end (17) for positioning, and the first extensions (11), (12) are located on the splice (16) and extend outwardly from the splice (16).

4. The electrode with a protective and cushioning structure according to claim 1, characterized in that the base unit further comprises a splice (26), the splice (26) having a lower end (23) for positioning, the second protrusion (21), (22) being located on the splice (26) and extending outwardly therefrom.

5. The electrode with the protective and buffer structure according to claim 3 or 4, characterized in that the splicing part (16) of the connection unit (1) is provided with an elastic structure (14), and the elastic structure (14) is pressed on the wall surface of the opening formed by bending the second protruding parts (21, 22); or the splicing part (26) of the base unit is provided with an elastic structure (27), and the elastic structure (27) is pressed on the wall surface of the opening formed by bending the first extending parts (11) and (12).

6. The electrode with the protective and buffer structure according to claim 3 or 4, wherein the width of the splicing part (16) of the connecting unit (1) is larger than the width of the opening formed by bending the second extending part (21, 22); or the width of the splicing part (26) of the base unit is larger than the width of the opening formed by bending the first extending parts (11) and (12).

7. The electrode with the protective buffer structure according to claim 5, wherein the second protruding portion (21), (22) extends from the base unit (2) to two sides and is bent to form an opening matched with the connecting unit (1), and the width of the opening is smaller than that of the elastic structure (14) when the elastic structure is not compressed; or the first extending part is bent to form an opening matched with the base unit (2), and the width of the opening is smaller than that of the elastic structure (27) when the elastic structure is not compressed.

8. The electrode with protective cushioning structure according to claim 5, characterized in that the base unit (2) further comprises a welding portion (24) for connection with a base plate and an upper end portion (29) or a lower end portion (23) for positioning.

9. The electrode with the protective and buffer structure according to claim 1 or 2, characterized in that the upper end (17) of the splicing part (16) of the connecting unit (1) and the upper end (29) of the base unit (2) are jointed and welded; or the buffer part (15) of the connecting unit is provided with a lower end part (18) for positioning, and the lower end part (23) of the splicing part (26) of the base unit is jointed and welded with the lower end part (18) of the connecting unit.

10. The electrode with the protective buffering structure according to claim 1, characterized in that the connecting unit (1) is made of the same material as the base unit (2) or a material having a mechanical strength greater than that of the base unit (2).

Technical Field

The present disclosure relates to electrodes, and particularly to an electrode with a protective buffer structure and a method for manufacturing the same.

Background

Power electronic power modules, especially power modules with small package structures, often use pin electrodes to electrically connect to the outside. In order to protect the stability of the package structure, the pin electrodes have corresponding buffer structures to relieve external impacts. Fig. 1 and 2 show two common needle electrodes.

The needle electrode shown in figure 1 is manufactured by integral punching. The hardness of the material should not be too high, which causes the head of the terminal to be easily deformed during the processing. The buffer part has no corresponding deformation stopping structure, and can continuously deform in the process of applying external force, and finally fails.

The needle electrode shown in fig. 2 is formed by splicing two parts, and the connection unit of the needle electrode can be referred to fig. 3. Due to the head portion having a pressfit construction, the material used is generally relatively rigid. In the process of packaging the power module, the base needs to be welded on the substrate, and then the head is inserted into the base by using a special machine to realize connection, so that the production cost is increased, and the working efficiency is reduced.

Disclosure of Invention

The purpose of the invention is as follows: in view of the above-mentioned drawbacks of the prior art, the present invention provides an electrode having a position-limiting structure for limiting the degree of deformation of a buffer portion, which can prevent excessive compression or tension of the buffer structure while performing an anti-seismic buffer function.

The technical scheme is as follows: the technical scheme of the invention is as follows: the electrode comprises a connecting unit and a base unit, and is characterized in that the connecting unit is electrically and mechanically connected with the base unit, a buffer part is arranged on the connecting unit or on the base unit, the connecting unit is provided with a first extending part, the base unit is provided with a second extending part, and the first extending part and the second extending part are matched to form a limiting structure for limiting the deformation degree of the buffer part.

The base unit is provided with a structure which plays a role in guiding the connecting unit; or the connecting unit is provided with a structure which plays a guiding role for the base unit.

The connecting unit also comprises a head connecting part and a splicing part; the splicing part is provided with an upper end part for positioning, and the first extending part is positioned on the splicing part and extends outwards from the splicing part.

The base unit further comprises a splicing part, the splicing part is provided with a lower end part used for positioning, and the second extending part is located on the splicing part and extends outwards from the splicing part.

The splicing part of the connecting unit is provided with an elastic structure which is tightly pressed on the wall surface of the opening formed by bending the second extending part; or the splicing part of the base unit is provided with an elastic structure which is tightly pressed on the wall surface of the opening formed by bending the first extending part.

The width of the splicing part of the connecting unit is larger than the width of an opening formed by bending the second extending part; or the width of the splicing part of the base unit is larger than the width of an opening formed by bending the first extending part.

The second extending part extends from the base unit to two sides and is bent to form an opening matched with the connecting unit, and the width of the opening is smaller than that of the elastic structure when the elastic structure is not compressed; or the first extending part is bent to form an opening matched with the base unit, and the width of the opening is smaller than that of the elastic structure when the elastic structure is not compressed.

The base unit further includes a soldering portion for connection with the base plate and an upper end portion or a lower end portion for positioning.

The upper end part of the splicing part of the connecting unit is attached to and welded with the upper end part of the base unit; or the buffer part of the connecting unit is provided with a lower end part for positioning, and the lower end part of the splicing part of the base unit is jointed and welded with the lower end part of the connecting unit.

The connecting unit is made of the same material as the base unit or a material with mechanical strength greater than that of the base unit.

The head connecting part is of an elastic structure (such as a pressfit structure) or a rigid structure, the buffer part is at least one bending unit, and the number and the bending direction of the bending units are determined according to technical parameters of the terminal to be processed.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: when the buffering structure of the electrode is pressed or pulled, the buffering structure plays a role of shock resistance and cannot generate excessive deformation, the possibility that the electrode is damaged due to accidental impact or stress fatigue is reduced, the service life of the electrode is prolonged, different implementation modes can be selected according to the type, technical requirements and production conditions of the electrode, the terminal is of a two-part plug-in structure, and the possibility that the limiting structure fails due to mistaken welding when the terminal is welded on a substrate is avoided.

Drawings

FIG. 1 is a schematic diagram of a prior art needle electrode;

FIG. 2 is a schematic view of another prior art needle electrode;

FIG. 3 is a schematic cross-sectional view of another prior art needle electrode;

FIG. 4 is a structural view of embodiment 1 of the present invention;

FIG. 5 is a structural view of a connecting unit in embodiment 1 of the present invention;

FIG. 6 is a structural view of a base unit in embodiment 1 of the invention;

FIG. 7 is a view showing the construction of embodiment 2 of the present invention;

FIG. 8 is a structural view of a connecting unit in embodiment 2 of the present invention;

FIG. 9 is a structural view of a base unit in embodiment 2 of the invention;

FIG. 10 is a structural view of embodiment 3 of the present invention;

fig. 11 is a structural view of a connection unit of embodiment 3 of the present invention;

fig. 12 is a structural view of a base unit of embodiment 3 of the invention;

FIG. 13 is a structural view of embodiment 4 of the present invention;

FIG. 14 is a structural view of a connecting unit in embodiment 4 of the present invention;

FIG. 15 is a structural view of a base unit in embodiment 4 of the invention;

FIG. 16 is a structural view of embodiment 5 of the present invention;

FIG. 17 is a structural view of a connecting unit in embodiment 5 of the invention;

FIG. 18 is a structural view of a base unit in embodiment 5 of the invention;

FIG. 19 is a structural view of embodiment 6 of the present invention;

FIG. 20 is a structural view of a connecting unit in embodiment 6 of the present invention;

FIG. 21 is a structural view of a base unit in embodiment 6 of the invention;

FIG. 22 is a structural view of embodiment 7 of the present invention;

FIG. 23 is a structural view of a connecting unit in embodiment 7 of the present invention;

FIG. 24 is a structural view of a base unit in embodiment 7 of the invention;

FIG. 25 is a structural view of embodiment 8 of the present invention;

FIG. 26 is a structural view of a connecting unit in embodiment 8 of the invention;

fig. 27 is a structural view of a base unit in embodiment 8 of the present invention.

FIG. 28 is a structural view of embodiment 9 of the present invention;

fig. 29 is a structural view of a connecting unit in embodiment 9 of the present invention;

fig. 30 is a structural view of a base unit in embodiment 9 of the present invention.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

Example 1

As can be seen from fig. 4-6, embodiment 1 of the present invention comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a first extending part 11, a first extending part 12, a splicing part 16 and an elastic structure 14, wherein the splicing part 16 is provided with a slot; the base unit 2 includes a second projecting portion 21, a second projecting portion 22, a buffer portion 28, and a welding portion 24.

The first extending part 11 and the first extending part 12 of the connecting unit have the same width, and are both smaller than the width of the elastic structure 14 when not compressed; the width of the opening formed by bending the second extending part 21 is larger than that of the opening formed by bending the second extending part 22; the width of the elastic structure 14 is greater than the width of the inner opening of the second extension 21; the width when first extension 11, 12 do not receive compression is less than the inside opening width of second extension 21, is greater than the inside opening width of second extension 22, has the fluting that is located between the extension of both sides on the concatenation portion 16, plays the guide effect to the linkage unit, makes the extension of linkage unit can pass through the opening of extension under the base and piece together and insert the target in place.

The electrode fabrication process of example 1 was: processing the connecting unit 1 and the base unit 2 respectively, inserting the connecting unit 1 into the base unit 2 from top to bottom through the second extending part 21, the buffering part 28 and the second extending part 22 of the base unit, and completing the electrode splicing when the upper end part 17 of the splicing part 16 is contacted with the upper end part 29 of the buffering part 28 and the upper plane of the first extending part 12 is contacted with the lower plane of the second extending part 22.

The width of the elastic structure 14 when uncompressed is larger than the opening formed by bending the second extension portion 21, and the elastic structure will slowly deform during the insertion process, so as to ensure the continuation of the insertion process. The deformation of the elastic structure 14 can make the outer wall tightly press-connected on the inner wall of the opening formed by bending the second extending part 21, so as to ensure the tight connection between the connection unit 1 and the base unit 2 and prevent the connection unit from shaking.

When passing through the opening of the second projecting portion 22, the first projecting portion 12 is compressed, and is bent and deformed in the axial direction of the connection unit 1, and passes through the inside of the second projecting portion 22. After the upper end 17 of the splice 16 contacts the upper end 29 of the bumper 28, it continues to press downward so that the first extension 12 passes completely through the second extension 22 and springs back so that its upper surface contacts the lower surface of the second extension 22. At this time, the buffer portion 28 has been deformed, and the connecting unit 1 is reacted to have a tendency to move upward, so that the upper plane of the first projecting portion 12 and the lower plane of the second projecting portion 22, and the upper end portion 17 of the splice portion 16 and the upper end portion 29 of the buffer portion 28 are brought into close contact.

The first protruding part 11 and the second protruding part 22 cooperate, so that excessive deformation of the buffer part 28 when the terminal is crimped can be effectively prevented; the first protruding part 12 and the second protruding part 22 cooperate to effectively prevent the buffer 28 from being excessively deformed when the terminal is pulled.

Example 2

As can be seen from fig. 7 to 9, embodiment 2 of the present invention includes a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a first extending part 11, a first extending part 12, a splicing part 16 and an elastic structure 14, wherein the splicing part is provided with a slot; the base unit 2 includes a second projecting portion 21, a buffer portion 28, a second projecting portion 22, and a welding portion 24.

The elastic structure 14 has an inverted trapezoidal shape with a wide top and a narrow bottom. In the splicing and inserting process, the width of the elastic structure is larger than the opening formed by bending the second extending part 21, and the elastic structure is slowly deformed under the extrusion of the opening of the extending part of the base so as to ensure the continuation of the inserting process. The deformation of the elastic structure 14 can make the outer wall of the elastic structure tightly press against the inner wall of the second extending part 21, so as to ensure the tight connection between the connection unit 1 and the base unit 2 and prevent the connection unit from shaking.

Example 3

As can be seen from fig. 10-12, embodiment 3, which is the present invention, comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a first extending part 11, a splicing part 16, a first extending part 12 and an elastic structure 14; the base 2 includes a buffer 28, a second protrusion 21, and a welding portion 24, and the elastic structure is located between the upper and lower protrusions of the connection unit.

The electrode fabrication process of example 3 was: processing the connecting unit 1 and the base unit 2 respectively, inserting the connecting unit 1 into the base unit 2 through the buffer part 28 and the second extending part 21 from top to bottom, and completing electrode splicing when the upper end part 17 of the splicing part 16 is in contact with the upper end part 29 of the buffer part 28 and the upper plane of the first extending part 12 is in contact with the lower plane of the second extending part 21.

In the splicing process, the width of the elastic structure 14 is larger than the opening of the second extension portion 21, and the elastic structure is slowly deformed by being pressed by the second extension portion 21, so as to ensure the continuation of the insertion process. The deformation of the elastic structure 14 can make the outer wall of the elastic structure tightly press against the inner wall of the second extension 21, so as to ensure the tight connection between the connection unit 1 and the base unit 2.

Because the splicing part is provided with the slot, the width of the first extending part 12 is larger than the opening formed by bending the second extending part 21, and the first extending part itself is provided with a chamfer, and when the first extending part passes through the inside of the second extending part 21, the first extending part can be bent and deformed towards the axial direction of the connecting unit 1, so that the first extending part 21 passes through. After the upper end 17 of the splice 16 contacts the upper end 29 of the bumper 28, the downward pressure is continued so that the first protrusion 12 passes completely through the second protrusion 21 and springs back to bring its upper flat surface into contact with the lower flat surface of the second protrusion 21. At this time, the buffer portion 28 has been deformed, which counteracts the tendency of the connection unit 1 to move upward, so that the upper plane of the first projecting portion 12 and the lower plane of the second projecting portion 21, and the upper end portion 17 of the splice portion 16 and the upper end portion 29 of the buffer portion 28 are brought into close contact.

The first protruding part 11 and the second protruding part 21 cooperate, so that excessive deformation of the buffer part 28 when the terminal is crimped can be effectively prevented; the first protruding part 12 and the second protruding part 21 cooperate to effectively prevent the buffer part 28 from being excessively deformed when the terminal is pulled.

Example 4

As can be seen from fig. 13-15, embodiment 4 of the present invention comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a first extending part 11, a splicing part 16 and a first extending part 12; the base unit 2 includes a buffer portion 28, a second projecting portion 21, and a welding portion 24. The cushioning portion comprises two bending units, and the splicing portion 16 and the cushioning portion 28 are both provided with grooves.

Wherein, the single width of the first extension part 12 is larger than the inner gap of the second extension part 21.

The electrode manufacturing process of the invention is as follows: processing the connecting unit 1 and the base 2 respectively, inserting the connecting unit 1 into the base unit 2 through the buffer part 28 and the second extension part 21 of the base unit from top to bottom, and completing electrode splicing when the upper end part 17 of the splicing part 16 is in contact with the upper end part 29 of the buffer part 28 and the upper plane of the first extension part 12 is in contact with the lower plane of the second extension part 21.

The upper slot of the buffer part 28 and the connection unit 1, and the slot of the splice part 16 and the base unit 2 are in interference fit, so that the connection unit 1 and the base unit 2 are tightly connected.

When the first protruding portion 12 passes through the inside of the second protruding portion 21, the second protruding portion 21 may be deformed in a direction away from the main body of the base 2 due to the width of the first protruding portion 12 and the chamfer, so that the first protruding portion 12 passes through the inside of the second protruding portion 21. After the upper end 17 of the splice 16 contacts the upper end 29 of the bumper 28, the downward pressing continues, so that the first protrusion 12 completely passes through the second protrusion 21, and the second protrusion 21 rebounds, so that the lower surface of the second protrusion contacts the upper surface of the first protrusion 12. At this time, the buffer portion 28 has been deformed, which counteracts the tendency of the connection unit 1 to move upward, so that the upper plane of the first projecting portion 12 and the lower plane of the second projecting portion 21, and the upper end portion 17 of the splice portion 16 and the upper end portion 29 of the buffer portion 28 are brought into close contact.

The first protruding part 11 and the second protruding part 21 cooperate, so that excessive deformation of the buffer part 28 when the terminal is crimped can be effectively prevented; the first protruding part 12 and the second protruding part 21 cooperate to effectively prevent the buffer part 28 from being excessively deformed when the terminal is pulled.

Example 5

As can be seen from fig. 16-19, embodiment 5 of the present invention comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a first extending part 11, a splicing part 16 and a first extending part 12, wherein the splicing part is provided with a slot; the base unit 2 includes a second projecting portion 21, a buffer portion 28, a second projecting portion 22, and a welding portion 24.

Wherein the widths of the first protruding part 11 and the first protruding part 12 of the connection unit are both larger than the opening widths of the second protruding part 21 and the second protruding part 22. The body width of the connection unit 1 is slightly smaller than the opening widths of the second protruding part 21 and the second protruding part 22.

The electrode manufacturing process of the invention is as follows: processing the connecting unit 1 and the base unit 2 respectively, wherein the second extension part 21 is bent into a form like the second extension part 22, then putting the connecting unit 1 into the base unit 2, and simultaneously ensuring that the first extension part 11 is between the second extension part 21 and the second extension part 22, the first extension part 12 is arranged below the second extension part 22, the upper end part 17 of the splicing part 16 is attached to the upper end part 29 of the buffer part 28, and the opposite main body surfaces of the connecting unit 1 and the base unit 2 are attached. The upper end 17 of the splice 16 is then welded to the upper end 29 of the bumper 28, and the second extension 21 is bent further to form the final closed position.

The first protruding part 11 and the second protruding part 22 cooperate, so that excessive deformation of the buffer part 28 when the terminal is crimped can be effectively prevented; the first protruding part 12 and the second protruding part 22 cooperate to effectively prevent the buffer 28 from being excessively deformed when the terminal is pulled.

Example 6

As can be seen from fig. 19-21, embodiment 6 of the present invention comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a first extending part 11, a splicing part 16 and a first extending part 12, wherein the splicing part is provided with a slot; the base 2 includes a buffer portion 28, a second protruding portion 21, and a welding portion 24.

Wherein the widths of the first protruding part 11 and the first protruding part 12 are both larger than the opening width of the second protruding part 21. The body width of the connection unit 1 is slightly smaller than the opening width of the second protruding part 21.

The electrode manufacturing process of the invention is as follows: processing the connecting unit 1 and the base unit 2 respectively, wherein the second extension part 21 is bent into a form like a right extension part, then putting the connecting unit 1 into the base unit 2, and ensuring that the second extension part 21 is arranged between the first extension part 11 and the first extension part 12, the upper end part 17 of the splicing part 16 is attached to the upper end part 29 of the buffer part 28, and the opposite main body surfaces of the connecting unit 1 and the base unit 2 are attached. The upper end 17 of the splice 16 is then welded to the upper end 29 of the bumper 28, and the second extension 21 is bent further to form the final closed position.

The first protruding part 11 and the second protruding part 21 cooperate, so that excessive deformation of the buffer part 28 when the terminal is crimped can be effectively prevented; the first protruding part 12 and the second protruding part 21 cooperate to effectively prevent the buffer part 28 from being excessively deformed when the terminal is pulled.

Example 7

As can be seen from fig. 22-24, embodiment 7 of the present invention comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a splicing part 16 and a first extending part 11; the base unit 2 includes a buffer portion 28, a second projecting portion 21, a second projecting portion 22, and a welding portion 24; the connecting unit and the base unit are provided with grooves.

The electrode manufacturing process of the invention is as follows: the connection unit 1 and the base unit 2 are respectively processed, wherein the tail end of the first extending part 11 is not bent, and then the connection unit 1 is inserted into the base unit 2 from top to bottom through the buffer part 28 and the second extending part 21. When the upper end 17 of the splice 16 is brought into contact with the upper end 29 of the bumper 28, it is welded thereto. Then, the end of the first protruding portion 11 is bent toward the gap between the second protruding portion 21 and the second protruding portion 22 on the corresponding side, and a final state is formed.

The upper slot of the buffer part 28 is in interference fit with the connection unit 1, and the slot of the splicing part 16 is in clearance fit with the base unit 2, so that the connection unit 1 is tightly connected with the base unit 2.

The first protruding part 11 and the second protruding part 22 cooperate, so that excessive deformation of the buffer part 28 when the terminal is crimped can be effectively prevented; the first protruding part 12 and the second protruding part 21 cooperate to effectively prevent the buffer part 28 from being excessively deformed when the terminal is pulled.

Example 8

As can be seen from fig. 25-27, embodiment 8 of the present invention comprises a connection unit 1 and a base unit 2. The connecting unit 1 comprises a head connecting part 13, a splicing part 16 and a first extending part 11; the base unit 2 includes a buffer portion 28, a second protruding portion 21, and a welding portion 24, and the base unit is provided with a slot.

The electrode manufacturing process of the invention is as follows: firstly, the connecting unit 1 and the base unit 2 are respectively processed, wherein the tail end of the first extending part 11 is not bent, and then the connecting unit 1 is inserted into the base unit 2 from top to bottom along the groove. When the upper end 17 of the splice 16 is brought into contact with the upper end 29 of the bumper 28, it is welded thereto. Then, the end of the first projecting portion 11 is bent toward the second projecting portion 21, and a final state is formed.

This embodiment can effectively prevent excessive deformation of the buffer portion 28 when the terminal is crimped by restricting the downward movement of the first projecting portion 11 by the grooved lower end portion 23 of the buffer portion 28; the lower end surface of the second projecting portion 21 restricts upward movement of the first projecting portion 11, and excessive deformation of the buffer portion 28 when the terminal is pulled can be effectively prevented.

Example 9

As can be seen from fig. 28-30, embodiment 9, which is the present invention, comprises a connection unit 1 and a base unit 2. Wherein the connection unit 1 comprises a head connection part 13, a first extension part 11 and a buffer part 15; the base 2 comprises a second extension 21, a splice 26, a second extension 22, a weld 24, an elastic structure 27, the elastic structure 27 being located between the upper and lower extensions of the connection unit.

The electrode manufacturing process of the invention is as follows: processing the connecting unit 1 and the base unit 2 respectively, then inserting the base unit 2 into the connecting unit 1 from bottom to top through the buffer part 15 and the first extending part 11, and completing electrode splicing when the lower end part 23 of the splicing part 26 is contacted with the lower end part 18 of the buffer part 15 and the upper plane of the first extending part 11 of the connecting unit is contacted with the lower plane of the second extending part 21.

During the splicing process, the width of the elastic structure 27 is larger than the opening of the first protruding part 11, so that slow deformation occurs to ensure the continuation of the insertion process. The deformation of the elastic structure 27 can make the outer wall of the elastic structure tightly press against the inner wall of the first extension 11, so as to ensure the tight connection between the connection unit 1 and the base unit 2.

Since the splice portion has the slot, the width of the second protruding portion 21 is larger than the opening of the first protruding portion 11 and has a chamfer, and when passing through the inside of the first protruding portion 11, it will be bent and deformed toward the axial direction of the base unit 2, thereby passing through the first protruding portion 11. After the lower end 23 of the splice 26 contacts the lower end 18 of the bumper 15, the second protrusion 21 is pressed upward, so that it completely passes through the first protrusion 11 and rebounds, and the lower surface of the second protrusion contacts the upper surface of the first protrusion 11. At this time, the buffer portion 15 is deformed and acts against the connection unit 1 to have a tendency to move upward, so that the lower plane of the second protruding portion 21 is brought into close contact with the upper plane of the first protruding portion 11 and the lower end portion 23 of the splice portion 26 is brought into close contact with the lower end portion 18 of the buffer portion 15.

The second protruding part 22 is matched with the first protruding part 11, so that excessive deformation of the buffer part 15 when the terminal is crimped can be effectively prevented; the second projecting portion 21 cooperates with the first projecting portion 11, and excessive deformation of the buffer portion 15 when the terminal is pulled can be effectively prevented.