Fixing device for battery piece welding strip tension test

Abstract

The utility model discloses a fixing device for battery piece solder strip tension test, which comprises a bottom plate, a battery pressing module and a solder strip stretching module, the battery pressing module and the solder strip stretching module are arranged on the bottom plate, the battery pressing module is movably arranged on the bottom plate through a lead screw, the battery pressing module comprises a clamping piece and a pressing head, the clamping piece is arranged on the lead screw through a sliding block, and the pressing head is arranged on the lead screw. A screw rod is arranged at the top of the clamping piece in a penetrating mode, the bottom of the screw rod is connected with the pressing head and drives the pressing head to ascend and descend, the welding strip stretching module is arranged at the end, opposite to the battery pressing and fixing module, of the bottom plate, and the welding strip stretching module comprises a moving block and a welding strip chuck; the movable block is erected on a fixing seat at one end of the bottom plate through a connecting guide rod, the welding strip chuck is movably arranged on the movable block and can transversely move on the movable block, and a supporting table is further arranged on the bottom plate. Through structural optimization, the device can be suitable for battery pieces of various specifications and sizes, and is good in flexibility, convenient and rapid in manual operation and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of solar cell fixing devices, in particular to a fixing device for tensile testing of a solar cell welding strip. Background Art

[0002] In the existing preparation process of photovoltaic solar cells, welding is usually used to form a welding strip on the surface of the solar cell to connect the positive and negative electrodes of the solar cell. The welding quality of the solar cell, the adhesion of the welding strip and the power of the solar cell module are closely related, and the adhesion of the welding strip is mainly reflected by the welding tension. Therefore, in order to ensure the product quality of the solar cell, it is necessary to conduct a welding tension test on the photovoltaic solar cell.

[0003] When conducting a tension test on a photovoltaic cell, the photovoltaic cell needs to be fixed first, so a fastening device is needed. The mechanism for fixing the cell in the existing fastening device is generally fixed directly to the workbench, which will result in the fastening structure being unable to be adjusted according to the size of the photovoltaic cell, and thus having poor applicability. For the production of cells of different specifications, multiple fastening devices are required during testing, which is costly and not conducive to the tension test of the welding strip. Utility Model Content

[0004] In view of the above, the utility model provides a fixing device for tensile testing of battery cell welding strips, which can be applicable to battery cells of various specifications and sizes through structural optimization, has good flexibility, is convenient and fast to operate manually, and has low cost.

[0005] The utility model provides the following technical solutions: a fixing device for tensile testing of battery cell welding strips, comprising a base plate and a battery pressing module and a welding strip stretching module arranged on the base plate, the battery pressing module being movably arranged on the base plate through a lead screw, the battery pressing module comprising a clamping member and a pressure head, the clamping member being arranged on the lead screw through a slider, and being driven by the lead screw to move on the base plate, a screw rod being penetrated through the top of the clamping member, the bottom of the screw rod being connected to the pressure head, driving the pressure head to rise and fall, the welding strip stretching module being arranged on one end of the base plate opposite to the battery pressing module, the welding strip stretching module comprising a moving block and a welding strip clamp, the moving block being mounted on a fixed seat at one end of the base plate through a connecting guide rod, the welding strip clamp being movably arranged on the moving block, and being able to move laterally on the moving block, and a support platform being also arranged on the base plate.

[0006] Furthermore, one end of the lead screw extending out of the base plate is connected to a rotating wheel, and the top end of the screw is connected to a handle.

[0007] Furthermore, the welding ribbon chuck includes a clamping block, a lifting drive mechanism and a slide. A slide groove is provided on the side of the movable block. One end of the slide is fixed on the clamping block, and the other end is movably arranged in the slide groove and can move laterally in the slide groove.

[0008] Furthermore, a bayonet is opened on one side of the clamping block relative to the battery clamping module, the lifting drive mechanism is arranged above the clamping block and passes through the upper wall of the bayonet, and the movable end of the lifting drive mechanism is connected to the pressing block and drives the pressing block to rise and fall in the bayonet.

[0009] Furthermore, a fixing sleeve is provided on the sliding member, and an adjusting bolt is provided on the fixing sleeve, and one end of the adjusting bolt abuts against the side wall of the moving block.

[0010] Furthermore, there are two connecting guide rods, which are symmetrically arranged on the moving block, and a connecting port is arranged on the moving block at a middle position between the two connecting guide rods.

[0011] Furthermore, the pressure head is annular and has a rubber protective layer on its surface.

[0012] Furthermore, the number of the battery pressing module and the welding ribbon clamp is greater than one.

[0013] Furthermore, a rubber protective layer is provided on the surface of the support platform.

[0014] Furthermore, the end corners of the bottom plate are provided with mounting grooves.

[0015] The battery cell welding strip tension test fixture of the utility model is designed with a movable battery cell pressing module. The clamp is manually moved close to the battery cell to a suitable position through a lead screw to fix it, and then the pressure head is adjusted to press down on the battery cell to fix the battery cell. The movable and adjustable clamp and pressure head can be used for fixing battery cells of various sizes and specifications, with better flexibility, convenient use and low cost. In addition, with a movable welding strip clamp, the welding strip clamp can be flexibly adjusted to correspond to welding strips at different positions on battery cells of different specifications, thereby further improving the applicability and convenience of the utility model fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the fixing device of the utility model;

[0017] Figure 2 Schematic diagrams of other angles of the fixing device of the utility model;

[0018] Figure 3 It is a schematic diagram of the fixing device of the utility model from other angles. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "setting", "connection", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Reference Figure 1-Figure 3 The battery cell welding strip tensile test fixture of this embodiment includes a base plate 1 and a battery pressing module 2 and a welding strip stretching module 3 arranged on the base plate 1. The battery pressing module 1 is movably arranged on the base plate 1 through a lead screw 3. The battery pressing module 2 includes a clamp 21 and a pressure head 22. The clamp 21 is fixedly connected to the lead screw 3 through a slider 23 and is driven to move on the base plate 1. The end of the lead screw 23 extending outside the base plate 1 is connected to a rotating wheel 231, and the lead screw 3 can be manually screwed through the rotating wheel 231 to drive the clamp 21 to move. A screw 24 is provided through the top of the clamp 21, and the bottom of the screw 24 is connected to the pressure head 22. The top of the screw 24 is connected to a handle 241, and the screw 24 can be manually screwed through the handle 241 to drive the pressure head 22 to rise and fall. A support platform 4 is also provided on the bottom plate 1. The battery cell 100 is placed on the support platform 4. The clamp 21 is moved close to the battery cell to a suitable position and fixed by the lead screw 3. Then the pressure head 22 is adjusted to press down on the battery cell to fix the battery cell. The movable and adjustable clamp 21 and pressure head 22 can be applied to the fixation of battery cells of various sizes and specifications, with better flexibility, convenient use and low cost. Among them, in this embodiment, there are two clamps 21 and pressure heads 22 respectively. The pressure head 22 is annular and has a rubber protective layer on the surface. The size of the pressure head can be replaced according to the specifications of the battery cell. At the same time, a rubber protective layer is also provided on the surface of the support platform 4.

[0022] Further, the ribbon stretching module 3 is arranged on one end of the bottom plate 1 relative to the battery pressing module 2, and the ribbon stretching module 3 includes a moving block 31 and a ribbon clamp. The moving block 31 is mounted on the fixed seat 11 at one end of the bottom plate 1 through a connecting guide rod 32, and the ribbon clamp is movably arranged on the moving block 31 and can move laterally on the moving block 31. Specifically, the ribbon clamp includes a clamping block 33, a lifting drive mechanism 34 and a slide 35. A slide groove 36 is provided on the side of the moving block 31. One end of the slide 35 is fixed on the clamping block 33, and the other end is movably arranged in the slide groove 36 and can move laterally in the slide groove 36.

[0023] Further reference Figure 2-Figure 3 The block 33 has a bayonet 37 on one side relative to the battery pressing module. The lifting drive mechanism 34 is arranged above the block 33 and passes through the upper wall of the bayonet 37. The movable end of the lifting drive mechanism 34 is connected to the pressing block 38, and drives the pressing block 38 to rise and fall in the bayonet 37. The slide 35 is provided with a fixed sleeve 351, and the fixed sleeve 351 is provided with an adjusting bolt 352. One end of the adjusting bolt 352 abuts against the side wall of the moving block 31. By screwing the adjusting bolt 352, the active state and position of the welding chuck on the moving block 31 can be changed. Specifically, the adjusting bolt 352 is rotated by a screwdriver to make the end of the adjusting bolt 352 leave the side wall of the moving block 31, so that the slide 35 can be moved horizontally on the slide groove 36, and the block 33 is adjusted to a suitable position corresponding to the welding strip. Then, the adjusting bolt 352 is screwed to make it abut against the side wall of the moving block 31, and the slide 35 is locked. The lifting drive mechanism 34 can be an electric cylinder or other small lifting mechanism in the prior art.

[0024] In this embodiment, there are two connecting guide rods 32, which are symmetrically arranged on the moving block 31. A connecting port is arranged on the moving block 31 at the middle position between the two connecting guide rods 32, which is used to connect an external tension test driving device, and then pull the moving block 31 to drive the solder ribbon clamp to move and tear the solder ribbon on the battery cell 100. Figure 1 Reference numeral 200 in the drawing shows a partial structure of a tension test drive device.

[0025] In addition, the end corners of the bottom plate 1 are provided with mounting grooves 12, which facilitate the installation of the overall fixture on the test machine. In other embodiments, the support platform 4 can also be a lifting platform.

[0026] When in use, the photovoltaic cell 100 is placed on the support table 4, and then the rotating wheel 231 is rotated, and the clamping part 21 is moved close to the cell to a suitable position through the screw 3 and stopped, and then the screw 24 is manually screwed through the handle 241 to drive the pressure head 22 to move down and press on the top of the cell to fix the cell, and adjust the position of the block 33 on the moving block 31 so that it corresponds to the position where the welding strip is to be torn off. The moving block 31 drives the block 33 to move toward the direction of the cell under the drive of the tension test drive device 200, and the head of the welding strip on the cell is inserted into the bayonet 37 of the block 33. The lifting drive mechanism 34 starts to drive the pressure block 38 to press the welding strip onto the block 33, and the tension test drive device 200 then drives the moving block 31 backward in the reverse direction to tear the welding strip off the cell.

[0027] In addition, the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fixing device for testing the tensile strength of a battery cell welding strip, comprising a base plate, a battery pressing module and a welding strip stretching module arranged on the base plate, characterized in that: The battery pressing module is movably arranged on the base plate through a lead screw, and the battery pressing module includes a clamping member and a pressure head. The clamping member is arranged on the lead screw through a slider, and is driven by the lead screw to move on the base plate. A screw is provided through the top of the clamping member, and the bottom of the screw is connected to the pressure head to drive the pressure head to rise and fall. The welding strip stretching module is arranged on one end of the base plate opposite to the battery pressing module, and the welding strip stretching module includes a moving block and a welding strip clamp. The moving block is mounted on a fixed seat at one end of the base plate by connecting a guide rod, and the welding strip clamp is movably arranged on the moving block and can move laterally on the moving block. A support platform is also provided on the base plate.

2. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: One end of the lead screw extending out of the bottom plate is connected to a rotating wheel, and the top end of the lead screw is connected to a handle.

3. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: The welding ribbon chuck comprises a clamping block, a lifting drive mechanism and a slide. A slide groove is provided on the side of the moving block. One end of the slide is fixed on the clamping block, and the other end is movably arranged in the slide groove and can move laterally in the slide groove.

4. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 3, characterized in that: The clamping block has a clamping slot on one side relative to the battery clamping module, the lifting drive mechanism is arranged above the clamping block and passes through the upper wall of the clamping slot, the movable end of the lifting drive mechanism is connected to the pressing block and drives the pressing block to rise and fall in the clamping slot.

5. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 3, characterized in that: The sliding piece is provided with a fixing sleeve, and the fixing sleeve is provided with an adjusting bolt, and one end of the adjusting bolt abuts against the side wall of the moving block.

6. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: There are two connecting guide rods, which are symmetrically arranged on the moving block. A connecting port is arranged on the moving block at a middle position between the two connecting guide rods.

7. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: The pressure head is annular, and a rubber protective layer is arranged on the surface.

8. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: The number of the battery pressing module and the welding ribbon clamp is greater than one.

9. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: The surface of the support platform is provided with a rubber protective layer.

10. The fixing device for testing the tensile strength of a battery cell welding strip according to claim 1, characterized in that: The end corners of the bottom plate are provided with mounting grooves.

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