A welding tooling applied to a photovoltaic module

Abstract

The utility model provides a kind of welding tool applied to photovoltaic module, belong to photovoltaic field.The welding tool is used to press solid and place on the solder strip of back contact cell piece included in photovoltaic module, it include: a plurality of press welding parts arranged, wherein, press welding part includes press solid structure and clamping structure;Press solid structure includes shell, and the inside of shell is provided with limit component;Clamping structure is installed in shell;Limit component and clamping structure cooperate and fix solder strip, and when welding, the solder strip section of non-welding position is clamped, and the solder strip section of clamping is released after welding is completed.The welding tool when carrying out back contact cell welding, can be through the synergic cooperation of press solid structure and clamping structure, so that solder strip has a part bending allowance, to effectively avoid the bending deformation of cell piece to solder strip side in welding cooling process, reduce the broken rate of photovoltaic module process, improve the reliability of photovoltaic module.

Description

Technical Field

[0001] This utility model relates to a welding fixture, and more particularly to a welding fixture applied to photovoltaic modules. Background Technology

[0002] As a core component of photovoltaic power generation systems, photovoltaic modules are manufactured through processes including stringing, stacking, lamination, and encapsulation. Stringing is a crucial step in connecting solar cells to form a circuit, and photovoltaic modules containing back-contact cells primarily employ laser welding and infrared welding techniques. However, the thermal stress generated during welding using these two common methods can cause warping of the back-contact cells, thus affecting the yield rate of subsequent module stacking and lamination. To address this issue, existing technologies typically heat and press the welded ribbon and cells together to mitigate cell warping to some extent. However, this method is prone to causing microcracks in the cells during the pressing process, affecting module reliability. Furthermore, the ribbon material is usually stored in rolls; when cut and used for welding, the bending deformation of the ribbon itself can also negatively impact weld quality. Utility Model Content

[0003] In view of this, the present invention provides a welding fixture for photovoltaic modules. Through the coordinated operation of the pressing and clamping structures, a portion of the welding strip's bending allowance is provided, effectively preventing the solar cells from bending and deforming towards the welding strip during the welding cooling process. Thus, by changing the structure and pressing method of the upper and lower pressing modules of the welding fixture, the present invention avoids bending deformation after welding of back-contact cells, reduces the breakage rate in the photovoltaic module manufacturing process, and improves the tensile strength of the weld joints and the reliability of the photovoltaic modules.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A welding fixture for use in photovoltaic modules, the photovoltaic modules including back contact cells, the welding fixture being used to press and secure solder strips placed on the back contact cells, the welding fixture comprising: a plurality of pressure welding sections arranged in an array, wherein... The pressure welding section includes a pressure-fixing structure and a clamping structure; The compression structure includes a housing, and a limit assembly is provided on the inner side of the housing; The clamping structure is installed inside the housing; The limiting component cooperates with the clamping structure to fix the welding strip, and clamps the welding strip segment at the non-welding position during welding, and releases the clamped welding strip segment after welding is completed.

[0006] Optionally, the clamping structure includes two cooperating clamping members, an elastic component, and a base. The clamping members are movably connected to the base, and the elastic component is disposed between the two clamping members. The limiting component restricts the vertical movement distance of the base. After the clamping structure is driven downward, the limiting component drives the two clamping members to move relative to each other, so that the clamping members clamp the weld strip segment at the non-welding position.

[0007] Optionally, the limiting component includes: a first protrusion disposed on the upper end of the inner side of the housing and a second protrusion disposed on the lower end of the inner side of the housing, wherein the first protrusion is used to limit the base above the first protrusion; and the second protrusion is used to squeeze the two clamping members after the pressure-fixing structure is driven downward, so that the two clamping members move relative to each other.

[0008] Optionally, the clamping member includes: a claw support and a claw, one end of the claw support is movably connected to the base, and the other end is fixedly connected to the claw; the elastic component is located between the two claw supports.

[0009] Optionally, the gripper is flat.

[0010] Optionally, the lower end of the housing is flared, and the second protrusion is located in the flared portion.

[0011] Optionally, the contact position between the flared portion and the solder strip or the back contact cell corresponds to the soldering position or non-soldering position of the back contact cell.

[0012] Optionally, it further includes: a fixed support portion, wherein a plurality of the pressure-welded portions are arranged at intervals in the fixed support portion, and the housing is fixedly connected to the fixed support portion.

[0013] Optionally, the fixed support includes: a tooling frame and a crossbeam fixedly connected to the tooling frame, and the housing is fixedly connected to the crossbeam.

[0014] Optionally, the crossbeam includes spaced-apart needle holes; the housing is embedded in the needle holes and fixedly connected to them.

[0015] Optionally, the fixed support further includes tooling ends disposed at both ends of the tooling frame.

[0016] According to the technical solution of this utility model, during the welding process of back contact cells, the welding fixture, through the coordinated cooperation of the pressing and clamping structures, allows for a certain amount of bending allowance in the welding strip, thereby effectively preventing the cell from bending and deforming towards the welding strip during the welding cooling process. Thus, by changing the structure and pressing method of the upper and lower pressing modules of the welding fixture, this utility model avoids bending deformation after welding of the back contact cells, reduces the breakage rate in the photovoltaic module manufacturing process, and improves the tensile strength of the weld and the reliability of the photovoltaic module. This utility model eliminates the need for additional pretreatment of the welding strip, simplifying the photovoltaic module manufacturing process. Furthermore, the welding fixture of this utility model has a simple structure, is easy to operate, and produces photovoltaic modules with stable and reliable performance, making it suitable for large-scale application.

[0017] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a welding fixture according to an embodiment of the present invention; Figure 2 This is a partially enlarged view of a welding fixture according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the clamping structure according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the compression structure according to an embodiment of the present invention; Figure 5 This is a perspective view of the assembly effect of the pressure welding part according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the fixed support part according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the working process of the pressure welding part in the welding process of one embodiment of the present invention.

[0019] The attached figures are labeled as follows: 10-Back contact cell; 20-Welding strip; 30-Welding fixture; 31-Pressure welding part; 32-Fixing support part; 321-Tooling frame; 322-Crossbeam; 323-Pressure pin row holes; 324-Tooling end; 311-Pressure fixing structure; 312-Clamping structure; 3111-Housing shell; 3112-Limiting component; 3113-First protrusion; 3114-Second protrusion; 3115-Flame mouth part; 3121-Clamping component; 3122-Elastic component; 3123-Base; 3124-Claw; 3125-Claw support component. Detailed Implementation

[0020] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0021] To address the technical problems existing in the prior art, this utility model provides a welding fixture for photovoltaic modules, mainly comprising multiple pressure welding sections arranged in an array. Each pressure welding section includes a pressing structure and a clamping structure. During the welding process, the fixture utilizes the coordinated cooperation of the pressing and clamping structures to allow for a certain amount of bending allowance in the weld strip, thereby effectively preventing the solar cells from bending and deforming towards the weld strip side during the welding cooling process. Thus, by changing the structure and pressing method of the upper and lower pressing modules of the welding fixture, this utility model avoids bending deformation after welding the back-contact cells, reduces the breakage rate in the photovoltaic module manufacturing process, and improves the tensile strength of the weld joints and the reliability of the photovoltaic modules. This utility model eliminates the need for additional pretreatment of the weld strip, simplifying the photovoltaic module manufacturing process. Furthermore, the welding fixture of this utility model has a simple structure, is easy to operate, and produces photovoltaic modules with stable and reliable performance, making it suitable for large-scale application.

[0022] The following describes, with reference to the accompanying drawings, the structure of a welding fixture for photovoltaic modules and its usage method.

[0023] Figure 1 This is a schematic diagram of the overall structure of a welding fixture according to an embodiment of the present invention; Figure 2 This is a partially enlarged view of a welding fixture according to an embodiment of this utility model. (See attached image.) Figure 1 and Figure 2 As shown, the welding fixture 30 of this utility model is used to press and secure the welding strip 20 placed on the back contact cell 10 of the photovoltaic module. The welding fixture 30 includes a plurality of pressure welding parts 31 arranged in a row. Each pressure welding part 31 includes a pressing structure 311 and a clamping structure 312. The pressing structure 311 includes a housing 3111, and a limiting component 3112 is provided inside the housing 3111. The clamping structure 312 is installed inside the housing 3111. The limiting component 3112 cooperates with the clamping structure 312 to fix the welding strip 20, and clamps the welding strip segment at the non-welding position during welding. After welding is completed, the clamped welding strip segment is released.

[0024] Typically, photovoltaic modules include multiple back-contact solar cells 10, which are connected by solder ribbons 20 to form a circuit. According to the technical solution of this utility model, the welding fixture 30 includes multiple pressure welding sections 31, which are arranged in an array, with each solder ribbon 20 corresponding to one row of pressure welding sections 31. When welding using the welding fixture 30, the pressing and fixing structure 311 is pressed down, and the limiting component 3112 of the pressing and fixing structure 311 compresses the clamping structure 312, causing the clamping structure 312 to clamp the non-welding section of the solder ribbon 20 it contacts, after which welding is performed. After welding is completed, the pressing and fixing structure 311 is lifted, causing the clamping structure 312 to release the clamped solder ribbon section. Thus, when welding the back contact cell 10 using the welding fixture 30 of this utility model, the welding strip 20 has a certain bending allowance, which effectively avoids the cell bending and deforming towards the welding strip side during the welding cooling process, solves problems such as cell warping and microcracks, improves the welding effect, reduces the breakage rate of photovoltaic module manufacturing process, and improves the tensile strength of the welding point and the reliability of photovoltaic module.

[0025] like Figure 3 As shown, Figure 3 This is a schematic diagram of a clamping structure according to an embodiment of the present invention. The clamping structure 312 mainly includes two cooperating clamping members 3121, an elastic component 3122, and a base 3123. The clamping members 3121 are movably connected to the base 3123, and the elastic component 3122 is disposed between the two clamping members 3121. The clamping members 3121 may, for example, be hinged to the base 3123 to achieve a movable connection, and the elastic component 3122 may be, for example, a spring or other elastically deformable component.

[0026] According to one embodiment of the present invention, the clamping member 3121 includes: a jaw support member 3125 and a jaw 3124. One end of the jaw support member 3125 is movably connected to the base 3123, and the other end is fixedly connected to the jaw 3124. Furthermore, an elastic component 3122 is located between the two jaw supports 3125. By dividing the clamping member 3121 into two parts, the jaw support member 3125 and the jaw 3124, it is convenient to periodically replace the jaw 3124.

[0027] In one embodiment of this utility model, the gripper 3124 is, for example, flat, which facilitates the gripping of the solder strip segment.

[0028] Figure 4 This is a schematic diagram of the compression structure according to an embodiment of the present invention. Figure 4As shown, the clamping structure 311 includes a housing 3111, and a limiting component 3112 is provided inside the housing 3111. The limiting component 3112 restricts the vertical movement distance of the base 3123. After the clamping structure 3111 is driven downward, the limiting component 3112 drives the two clamping members 3121 to move relative to each other, so that the clamping members 3121 can clamp the weld strip segment at the non-welding position. In the embodiment of this utility model, the limiting component 3112 can achieve two functions: first, it restricts the vertical movement distance of the base 3123, so that after welding is completed, when the clamping structure 311 is lifted, the base 3123 of the clamping structure 312 can be lifted based on the limiting component 3112, so that the clamping structure 311 and the clamping structure 312 can move together; second, after the clamping structure 311 is driven downward, it drives the two clamping members 3121 to move relative to each other and clamp the weld strip segment at the non-welding position.

[0029] Specifically, in order to realize the function of the limiting component 3112, the limiting component 3112 may include: a first protrusion 3113 disposed on the upper inner side of the housing 3111 and a second protrusion 3114 disposed on the lower inner side of the housing 3111. The first protrusion 3113 is used to restrict the base 3123 above the first protrusion 3113; the second protrusion 3114 is used to squeeze the two clamping members 3121 after the pressure-fixing structure 311 is driven downward, so that the two clamping members 3121 move relative to each other.

[0030] like Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the lower end of the housing 3111 is flared, and the second protrusion 3114 is located inside the flared portion 3115. The housing 3111 of the compression structure 311, depending on its shape, may have a flared portion 3115 at the lower end of the columnar portion, and this flared portion 3115 may be integrally formed with the columnar portion, or it may be two parts fixedly connected.

[0031] According to the technical solution of this utility model, the contact position between the flared portion 3115 and the welding strip 20 or the back contact battery cell 10 corresponds to the welding position or non-welding position of the back contact battery cell 10. That is, in this utility model, only the contact position between the gripper 3124 and the welding strip 20 needs to be defined, and the contact position between the flared portion 3115 and the welding strip 20 or the back contact battery cell 10 is not defined.

[0032] Figure 5 This is a perspective view of the assembly effect of the pressure-welded part according to an embodiment of this utility model. Figure 5As shown, a pressure-welded portion 31 formed by assembling a pressure-fixing structure 311 and a clamping structure 312 is illustrated. Specifically, the clamping structure 312 is assembled inside the housing 3111 of the pressure-fixing structure 311, and the base 3123 of the clamping structure 312 is mounted on a first protrusion 3113 provided on the upper inner side of the housing 3111, so that the pressure-fixing structure 311 and the clamping structure 312 can move together.

[0033] According to another embodiment of the present invention, the welding fixture 30 may further include a fixed support portion 32 for fixing and supporting the pressure welding portions 31, and a plurality of pressure welding portions 31 are arranged at intervals on the fixed support portion 32, and the housing 3111 is fixedly connected to the fixed support portion 32. The housing 3111 and the fixed support portion 32 may be fixedly connected, for example, by welding, screwing, riveting, or other methods.

[0034] Figure 6 This is a structural schematic diagram of the fixed support portion according to one embodiment of the present invention. Figure 6 As shown, the fixed support part 32 mainly includes: a tooling frame 321 and a crossbeam 322 fixedly connected to the tooling frame 321, and the housing 3111 is fixedly connected to the crossbeam 322. Specifically, when fixing the housing 3111 to the crossbeam 322, the top of the housing 3111 can be fixedly connected to the crossbeam 322 by welding, bonding, screwing, or other methods.

[0035] In one embodiment, the crossbeam 322 includes spaced-apart needle holes 323, and the housing 3111 is embedded in and fixedly connected to the needle holes 323. In specific implementations, the needle holes 323 can be through holes or blind holes with downward openings; this solution does not impose any specific limitations.

[0036] In one embodiment, the fixed support 32 may further include tooling ends 324 disposed at both ends of the tooling frame 321. The thickness of the tooling ends 324 is generally greater than the thickness of the tooling frame 321 and the crossbeam 322, so as to facilitate the fixing and use of the welding tooling 30.

[0037] Figure 7 This is a schematic diagram of the working process of the pressure welding part in the welding process of an embodiment of the present invention, which shows the working process of the pressure welding part 31 during the use of the welding fixture 30.

[0038] exist Figure 7 In the left figure, the state of the pressure welding part 31 before welding begins is shown. At this time, the pressure welding structure 311 is not subjected to a downward driving force, the flared part 3115 of the housing 3111 is not in contact with the welding strip 20 or the back contact with the battery cell 10, the elastic component 3122 (e.g., spring) of the clamping structure 312 is in a natural state, and the gripper 3124 is in an open state.

[0039] The middle diagram shows the state of the pressure welding section 31 during laser welding or infrared welding. After the back contact solar cells 10 are strung together and the welding strip 20 is pulled onto the back contact solar cells 10, the pressure-fixing structure 311 is subjected to a downward driving force. The jaws 3124 of the clamping structure 312 first contact the welding strip 20 and correspond to the non-welding position of the back contact solar cells 10. At this time, the elastic component 3122 of the clamping structure 312 is in a natural state, and the jaws 3124 are in an open state. Then, the pressure-fixing structure 311 continues to be pressed down. The second protrusion 3114 at the lower inner end of the shell 3111 of the pressure-fixing structure 311 squeezes the jaws 3124, the elastic component 3122 is compressed, and the jaws 3124 tighten, clamping the welding strip segment. When the flared portion 3115 of the pressure-fixing structure 311 presses the welding strip 20, the jaws 3124 stop moving. At this time, the welding area is heated by laser or infrared lamp to complete the welding.

[0040] The right-hand diagram shows the state of the pressure welded part 31 after welding. At this point, the welding fixture 30 is lifted, first lifting the clamping structure 311. The pressure exerted on the gripper 3124 by the second protrusion 3114 at the lower inner end of the shell 3111 of the clamping structure 311 decreases, the elastic component 3122 expands, and the gripper 3124 opens. When the clamping structure 311 is lifted until the base 3123 of the clamping structure 312 reaches the first protrusion 3113 at the upper inner end of the shell 3111 of the clamping structure 311, the elastic component 3122 expands to its natural elongation state, and the clamping structure 312 is lifted. The welding fixture 30 can be reused for the next welding step.

[0041] According to the technical solution of this utility model embodiment, the welding fixture is used for back contact battery welding. Through the coordinated cooperation of the pressing structure and the clamping structure, the welding strip has a certain bending allowance, thereby effectively avoiding the bending deformation of the battery cell towards the welding strip side during the welding cooling process. Thus, this utility model, by changing the structure and pressing method of the upper and lower pressing modules of the welding fixture, avoids bending deformation of the back contact battery after welding, reduces the breakage rate in the photovoltaic module manufacturing process, and improves the tensile strength of the solder joints and the reliability of the photovoltaic module. This utility model eliminates the need for additional pretreatment of the welding strip, simplifying the photovoltaic module manufacturing process. Furthermore, the welding fixture of this utility model has a simple structure, is easy to operate, and produces photovoltaic modules with stable and reliable performance, making it suitable for large-scale promotion and use.

[0042] In summary, the embodiments of this utility model provide the following technical solutions:

[0043] Technical Solution 1. A welding fixture for a photovoltaic module, the photovoltaic module including a back contact cell 10, the welding fixture 30 being used to press and secure a solder strip 20 placed on the back contact cell 10, the welding fixture 30 including a plurality of pressure welding parts 31 arranged in an array, wherein, The pressure welding part 31 includes a pressure fixing structure 311 and a clamping structure 312; The compression structure 311 includes a housing 3111, and a limiting component 3112 is provided inside the housing 3111. The clamping structure 312 is installed inside the housing 3111; The limiting component 3112 cooperates with the clamping structure 312 to fix the welding strip 20, and clamps the welding strip segment at the non-welding position during welding, and releases the clamped welding strip segment after welding is completed.

[0044] Technical Solution 2. According to the welding fixture described in Technical Solution 1, the clamping structure 312 includes two cooperating clamping members 3121, an elastic component 3122 and a base 3123, wherein the clamping members 3121 are movably connected to the base 3123, and the elastic component 3122 is disposed between the two clamping members 3121; The limiting component 3112 restricts the vertical movement distance of the base 3123; After the pressure-fixing structure 311 is driven downward, the limiting component 3112 drives the two clamping members 3121 to move relative to each other, so that the clamping members 3121 clamp the weld strip segment at the non-welding position.

[0045] Technical Solution 3. According to the welding fixture described in Technical Solution 2, the limiting component 3112 includes: a first protrusion 3113 disposed on the upper inner side of the housing 3111 and a second protrusion 3114 disposed on the lower inner side of the housing 3111. The first protrusion 3113 is used to restrict the base 3123 above the first protrusion 3113; The second protrusion 3114 is used to squeeze the two clamping members 3121 after the pressure structure 311 is driven downward, so that the two clamping members 3121 move relative to each other.

[0046] Technical Solution 4. According to the welding fixture described in Technical Solution 2 or 3, the clamping member 3121 includes: a jaw support member 3125 and a jaw 3124. One end of the gripper support 3125 is movably connected to the base 3123, and the other end is fixedly connected to the gripper 3124; The elastic component 3122 is located between the two gripper supports 3125.

[0047] Technical Solution 5. According to the welding fixture described in Technical Solution 4, the gripper 3124 is flat.

[0048] Technical Solution 6. According to the welding fixture described in Technical Solution 3, the lower end of the housing 3111 is in the shape of a flared mouth, and the second protrusion 3114 is located in the flared mouth portion 3115.

[0049] Technical Solution 7. According to the welding fixture described in Technical Solution 6, the contact position between the flared portion 3115 and the welding strip 20 or the back contact battery cell 10 corresponds to the welding position or non-welding position of the back contact battery cell 10.

[0050] Technical Solution 8. The welding fixture according to Technical Solution 1 further includes: a fixed support part 32. Multiple pressure-welded portions 31 are spaced apart from the fixed support portion 32, and the housing 3111 is fixedly connected to the fixed support portion 32.

[0051] Technical Solution 9. According to the welding fixture described in Technical Solution 8, the fixed support part 32 includes: a fixture frame 321 and a crossbeam 322 fixedly connected to the fixture frame 321. The housing 3111 is fixedly connected to the crossbeam 322.

[0052] Technical Solution 10. According to the welding fixture described in Technical Solution 9, the crossbeam 322 includes spaced-apart pressure pin holes 323; The housing 3111 is embedded in the pressure needle row hole 323 and is fixedly connected to the pressure needle row hole 323.

[0053] Technical Solution 11. According to the welding fixture described in Technical Solution 9, the fixed support part 32 further includes: fixture end parts 324 disposed at both ends of the fixture frame 321.

[0054] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A welding fixture for photovoltaic modules, characterized in that, The photovoltaic module includes a back contact cell (10), and the welding fixture (30) is used to press and secure the solder strip (20) placed on the back contact cell (10). The welding fixture (30) includes a plurality of pressure welding parts (31) arranged in a row. The pressure welding part (31) includes a pressure fixing structure (311) and a clamping structure (312); The compression structure (311) includes a housing (3111), and a limiting component (3112) is provided inside the housing (3111); The clamping structure (312) is installed inside the housing (3111); The limiting component (3112) cooperates with the clamping structure (312) to fix the welding strip (20), and clamps the welding strip segment at the non-welding position during welding, and releases the clamped welding strip segment after welding is completed.

2. The welding fixture according to claim 1, characterized in that, The clamping structure (312) includes two cooperating clamping members (3121), an elastic component (3122), and a base (3123). The clamping members (3121) are movably connected to the base (3123), and the elastic component (3122) is disposed between the two clamping members (3121). The limiting component (3112) limits the vertical movement distance of the base (3123); After the pressure-fixing structure (311) is driven downward, the limiting component (3112) drives the two clamping members (3121) to move relative to each other, so that the clamping members (3121) clamp the weld strip segment at the non-welding position.

3. The welding fixture according to claim 2, characterized in that, The limiting component (3112) includes: a first protrusion (3113) disposed on the upper inner side of the housing (3111) and a second protrusion (3114) disposed on the lower inner side of the housing (3111). The first protrusion (3113) is used to restrict the base (3123) above the first protrusion (3113); The second protrusion (3114) is used to squeeze the two clamping members (3121) after the pressure structure (311) is driven downward, so that the two clamping members (3121) move relative to each other.

4. The welding fixture according to claim 2 or 3, characterized in that, The clamping member (3121) includes: a jaw support member (3125) and a jaw (3124). One end of the gripper support (3125) is movably connected to the base (3123), and the other end is fixedly connected to the gripper (3124); The elastic component (3122) is located between the two gripper supports (3125).

5. The welding fixture according to claim 4, characterized in that, The gripper (3124) is flat.

6. The welding fixture according to claim 3, characterized in that, The lower end of the housing (3111) is flared, and the second protrusion (3114) is located in the flared portion (3115).

7. The welding fixture according to claim 6, characterized in that, The contact position between the flared portion (3115) and the solder strip (20) or the back contact battery cell (10) corresponds to the welding position or non-welding position of the back contact battery cell (10).

8. The welding fixture according to claim 1, characterized in that, Also includes: Fixed support part (32), Multiple pressure-welded portions (31) are spaced apart from the fixed support portion (32), and the housing (3111) is fixedly connected to the fixed support portion (32).

9. The welding fixture according to claim 8, characterized in that, The fixed support (32) includes: a tooling frame (321) and a crossbeam (322) fixedly connected to the tooling frame (321). The housing (3111) is fixedly connected to the crossbeam (322).

10. The welding fixture according to claim 9, characterized in that, The crossbeam (322) includes spaced-apart needle holes (323); The housing (3111) is embedded in the pressure needle row hole (323) and is fixedly connected to the pressure needle row hole (323).

11. The welding fixture according to claim 9, characterized in that, The fixed support (32) also includes: Tooling ends (324) are located at both ends of the tooling frame (321).

Images