Lithium battery protection board testing device

Abstract

The utility model relates to a lithium battery protection plate testing device which comprises a base, a support, a testing plate and a pressing device, the base is provided with a workbench, and the testing plate is movably arranged on the support through the pressing device and located over the workbench; the test plate and the workbench are arranged in parallel, the test plate is provided with a plurality of test needle assemblies, and the test plate is pressed down to the workbench through the compactor to drive ejector pins of the test needle assemblies to be in contact with test points of the protection plate for electrical test; the test board is divided into a first installation area and second installation areas in the width direction, the first installation area is provided with first installation grooves, the second installation areas are provided with second installation grooves, the multiple second installation grooves are arranged side by side in the length direction, and positioning steps for installing test needle assemblies are arranged in the first installation grooves and the second installation grooves. According to the utility model, the first mounting groove and the second mounting groove in different directions of the test board are subjected to universal adaptation, the test board is compatible with electrical tests of different models of lithium battery protection boards, and the test efficiency and the product yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and particularly relates to a testing device for a lithium battery protection board. Background Art

[0002] In the existing production process of lithium battery products, a battery module needs to be assembled with a protection board. The protection board is composed of an electronic circuit, which monitors the voltage of the battery cell and the current of the charging and discharging circuit, and instantaneously controls the on-off of the current circuit; it protects the lithium battery from overcharging, over-discharging, over-current, short circuit and over-temperature charging and discharging. The quality of the protection board directly affects the quality of the lithium battery. Therefore, it is particularly important to test the performance of the protection board of the lithium battery.

[0003] At present, a protection board tester is required in the protection board testing process. Since the number and positions of the wiring test points of each type of lithium battery are different, a dedicated fixture is usually required to connect the lithium battery to the tester. In small-batch production, the fixture needs to be frequently replaced, resulting in low testing efficiency. At the same time, corresponding dedicated fixtures need to be designed and manufactured for different types of lithium batteries, resulting in high fixture manufacturing costs. Summary of the Utility Model

[0004] In order to solve the deficiencies of the prior art, the utility model provides a universal testing device for a lithium battery protection board.

[0005] The utility model provides a testing device for a lithium battery protection board, which includes a base, a bracket, a test board and a presser. A workbench for placing the protection board is arranged on the base. The bracket is vertically arranged on one side of the base. The test board is movably arranged on the bracket through the presser and is located directly above the workbench. The test board and the workbench are arranged parallel to each other. The test board is provided with a plurality of test needle assemblies. The test board is pressed down to the workbench through the presser to drive the ejector pins of the test needle assemblies to contact the test points of the protection board for electrical testing. The test board is divided into a first installation area and a second installation area in the width direction. The first installation area is provided with a first installation groove along the length direction of the test board. The second installation area is provided with a second installation groove along the width direction of the test board. A plurality of second installation grooves are arranged side by side along the length direction. Positioning steps for installing the test needle assemblies are arranged in both the first installation groove and the second installation groove.

[0006] In some embodiments, the test pin assembly includes a ejector pin, a mounting block and a positioning block, the ejector pin is vertically arranged on the mounting block, the positioning block is assembled with the positioning step, the mounting block is located below the test board, and the positioning block and the mounting block are fixed by bolts to vertically fix the ejector pin on the test board; the upper and lower ends of the ejector pin are respectively exposed from the upper and lower sides of the mounting block, the lower end of the ejector pin is set as a contact end that contacts the test point of the protection plate, and the upper end of the ejector pin serves as a wiring terminal connected to the tester, and the wiring terminal is not higher than the test board.

[0007] In some embodiments, the positioning block is in the shape of a cuboid.

[0008] In some embodiments, a screw hole is provided at the center of the positioning block, an oblong hole is provided at the center of the mounting block, and the bolt is installed between the screw hole and the oblong hole.

[0009] In some embodiments, the first installation area is provided with a first installation slot, and the second installation area is provided with eighteen second installation slots arranged side by side.

[0010] In some of the embodiments, the base is equipped with three positioning plates on the workbench, and the three positioning plates form a C-shaped positioning groove for positioning and placing the protective plate, and the opening of the C-shaped positioning groove is set as a material opening for taking and placing the protective plate.

[0011] In some embodiments, the base is provided with a plurality of mounting holes distributed in a matrix at the workbench, and the positioning plate is fixedly connected to the corresponding mounting holes by screws.

[0012] In some embodiments, a pad is vertically arranged downwardly from the edge of the base, and the pad is provided with an operation opening.

[0013] In some embodiments, the clamp includes a handle, a connecting rod, a lifting rod and a sleeve, the handle is transmission connected to the lifting rod through the connecting rod, the sleeve is fixedly connected to the vertical plate of the bracket, the lifting rod is inserted into the sleeve, the lower end of the lifting rod is fixedly connected to the test plate, the upper end of the lifting rod is pivotally connected to the connecting rod, one end of the handle is set as a gripping part, the other end of the handle is pivotally connected to the connecting rod, and the middle part of the handle is pivotally connected to the sleeve.

[0014] In some embodiments, the bracket includes a support plate, a vertical plate and a horizontal plate, the two support plates are vertically arranged on the base, the vertical plate is arranged between the two support plates in the vertical direction, the horizontal plate is arranged between the two support plates in the horizontal direction, and the horizontal plate is vertically arranged on the back of the vertical plate.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the first installation groove and the second installation groove with different directions of the test board for general adaptability, according to the number and positions of the test points of protection boards of different models, the test needle assembly is correspondingly installed in the first installation groove or the second installation groove, so as to be compatible with the electrical tests of lithium battery protection boards of different models, save the manufacturing cost, and improve the test efficiency and the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 6 is one of the three-dimensional structural schematic diagrams of the lithium battery protection board test device according to the embodiment of the present application.

[0017] Figure 2 FIG. 7 is another three-dimensional structural schematic diagram of the lithium battery protection board test device according to the embodiment of the present application.

[0018] Figure 3 FIG. 8 is the three-dimensional structural schematic diagram of the test board according to the embodiment of the present application.

[0019] Figure 4 FIG. 9 is the three-dimensional structural schematic diagram of the test needle assembly according to the embodiment of the present application.

[0020] REFERENCE SIGNS:

[0021] 101, tester;

[0022] 1, base; 11, positioning plate; 12, C-shaped positioning groove; 13, material inlet; 14, mounting hole; 15, backing plate; 16, operation port;

[0023] 2, bracket; 21, support plate; 22, vertical plate; 23, cross plate;

[0024] 3, test board; 31, first installation area; 32, second installation area; 33, first installation groove; 34, second installation groove; 35, positioning step;

[0025] 4, presser; 41, handle; 42, connecting rod; 43, lifting rod; 44, sleeve;

[0026] 5, test needle assembly; 51, thimble; 52, mounting block; 53, positioning block; 54, bolt; 55, threaded hole; 56, oblong hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The detailed embodiments of the present utility model are introduced with reference to the accompanying drawings.

[0028] Refer to Figure 1, The figure shows a three-dimensional structural schematic diagram of a lithium battery protection board testing device. Below is the tester 101, and above are the base 1 and the test board 3. The test board 3 is movably arranged above the base 1 through a presser 4. The base 1 is used to place the protection board. The first installation groove 33 and the second installation groove 34 are arranged through the test board 3 along the thickness direction. The corresponding test needle assemblies 5 are installed through the first installation groove 33 and the second installation groove 34, matching the number and position of the test points of the protection board.

[0029] Reference Figures 1 to 4 , A lithium battery protection board testing device includes a base 1, a bracket 2, a test board 3, and a presser 4. A workbench for placing the protection board is arranged on the base 1. The bracket 2 is vertically arranged on one side of the base 1. The test board 3 is movably arranged on the bracket 2 through the presser 4 and is located directly above the workbench. The test board 3 and the workbench are arranged parallel to each other. The test board 3 is provided with a plurality of test needle assemblies 5. The test board 3 is pressed down to the workbench through the presser 4 to drive the thimble 51 of the test needle assembly 5 to contact the test points of the protection board for electrical testing. The test board 3 is divided into a first installation area 31 and a second installation area 32 in the width direction. The first installation groove 33 is arranged along the length direction of the test board 3 in the first installation area 31. The second installation groove 34 is arranged along the width direction of the test board 3 in the second installation area 32. A plurality of second installation grooves 34 are arranged side by side along the length direction. Positioning steps 35 for installing the test needle assemblies 5 are arranged in both the first installation groove 33 and the second installation groove 34.

[0030] The lithium battery protection board testing device according to the embodiment of the present application is adapted generally through the first installation groove 33 and the second installation groove 34 with different directions on the test board 3. According to the number and position of the test points of different models of protection boards, the corresponding test needle assemblies 5 are installed in the first installation groove 33 or the second installation groove 34, so as to be compatible with the electrical testing of different models of lithium battery protection boards, save manufacturing costs, and improve the test efficiency and product qualification rate.

[0031] In order to quickly position and install the test needle assembly 5 on the test board 3, in this embodiment, reference Figures 1 to 4 , The test needle assembly 5 includes a thimble 51, a mounting block 52, and a positioning block 53. The thimble 51 is vertically arranged on the mounting block 52. The positioning block 53 is fitted with the positioning step 35. The mounting block 52 is located below the test board 3. The positioning block 53 and the mounting block 52 are fixed by a bolt 54 to vertically fix the thimble 51 on the test board 3. The upper end and the lower end of the thimble 51 respectively expose from the upper and lower sides of the mounting block 52. The lower end of the thimble 51 is set as the contact end for contacting the test points of the protection board, and the upper end of the thimble 51 serves as the wiring end connected to the tester 101, and the wiring end does not protrude above the test board 3.

[0032] It can be understood that with such a setting, by adapting the positioning block 53 to the positioning steps 35 of the first installation groove 33 and the second installation groove 34, it is convenient to place the positioning block 53 in the positioning steps 35. When the positioning block 53 and the installation block 52 are not locked by the bolt 54, the positioning block 53 can adjust its position along the positioning steps 35, so as to conveniently adjust the position of the test needle assembly 5 according to the position of the test points on the protection board. After the adjustment is completed, the positioning block 53 and the installation block 52 are tightened by the bolt 54 to fix the position of the thimble 51.

[0033] To facilitate the adaptation of the positioning block 53 to the positioning steps 35, in this embodiment, referring to Figure 4 , the shape of the positioning block 53 is a cuboid.

[0034] It can be understood that with such a setting, the positioning block 53 of each test needle assembly 5 is a cuboid and has the same shape. When multiple test needle assemblies 5 are placed in the same first installation groove 33 or the same second installation groove 34, the multiple test needle assemblies 5 can be placed closely together, and adjacent test needle assemblies 5 can be positioned relative to each other to adapt to the case where the spacing between the test points on the protection board is small; the entire row of test needle assemblies 5 in the same installation groove can be quickly positioned and installed, improving the installation and debugging efficiency.

[0035] To finely adjust the position of the thimble 51, in this embodiment, referring to Figure 4 , a threaded hole 55 is provided through the center of the positioning block 53, and a long circular hole 56 is provided through the center of the installation block 52. The bolt 54 is installed between the threaded hole 55 and the long circular hole 56.

[0036] It can be understood that with such a setting, the thimble 51 and the installation block 52 are fixed, the bolt 54 and the positioning block 53 are fixed, and the positioning block 53 can only be adjusted along the positioning steps 35. There is a fine adjustment space between the bolt 54 and the installation block 52 through the long circular hole 56, and the installation block 52 and the thimble 51 can be finely adjusted along the length direction of the long circular hole 56, so that the thimble 51 can accurately contact the test points on the protection board.

[0037] To adapt to more models of protection boards, in this embodiment, referring to Figure 3 , one first installation groove 33 is provided in the first installation area 31, and eighteen second installation grooves 34 are arranged side by side in the second installation area 32.

[0038] It can be understood that with such a setting, the test needle assembly 5 installed in the first installation groove 33 can correspond to multiple test points in the length direction of the protection board, and the test needle assembly 5 selected to be installed in the second installation groove 34 corresponds to multiple test points in the width direction of the protection board. Different second installation grooves 34 correspond to protection boards of different lengths.

[0039] To position the protection board, in this embodiment, referring toFigure 1 and Figure 2 The base 1 is provided with three positioning plates 11 at the workbench. The three positioning plates 11 form a C-shaped positioning groove 12 for positioning and placing the protection plate. The opening of the C-shaped positioning groove 12 is provided as a material opening 13 for taking and placing the protection plate.

[0040] It is understandable that, with such a configuration, protection plates of different sizes require the test needle assembly 5 to be installed in the corresponding first mounting groove 33 or second mounting groove 34. At the same time, the positioning plate 11 is adjusted to position the protection plate so that the test needle assembly 5 can be accurately aligned with the test point of the protection plate to ensure accurate testing.

[0041] In order to fix the positioning plate 11 to the base 1, in this embodiment, refer to Figure 2 The base 1 is provided with a plurality of mounting holes 14 distributed in a matrix at the workbench, and the positioning plate 11 is fixedly connected to the corresponding mounting holes 14 by screws.

[0042] It is understandable that, with such a configuration, the three positioning plates 11 can be adjusted according to protection plates of different sizes through the matrix-distributed mounting holes 14, so as to better adapt to protection plates of different models and improve compatibility.

[0043] In order to facilitate the movement of the lithium battery protection board test device, in this embodiment, reference Figure 1 and Figure 2 A pad 15 is vertically arranged downward at the edge of the base 1 , and an operation port 16 is opened on the pad 15 .

[0044] It is understandable that, with such arrangement, when the entire lithium battery protection board testing device needs to be moved, the base 1 is held through the operating port 16 to move the lithium battery protection board testing device to a corresponding position.

[0045] In order to realize the up and down movement of the test plate 3, in this embodiment, refer to Figure 1 and Figure 2 The clamp 4 includes a handle 41, a connecting rod 42, a lifting rod 43 and a sleeve 44. The handle 41 is transmission-connected to the lifting rod 43 through the connecting rod 42. The sleeve 44 is fixedly connected to the vertical plate 22 of the bracket 2. The lifting rod 43 is inserted into the sleeve 44. The lower end of the lifting rod 43 is fixedly connected to the test plate 3. The upper end of the lifting rod 43 is pivotally connected to the connecting rod 42. One end of the handle 41 is set as a gripping portion, the other end of the handle 41 is pivotally connected to the connecting rod 42, and the middle part of the handle 41 is pivotally connected to the sleeve 44.

[0046] It can be understood that with such an arrangement, the two pressing devices 4 can stably drive the test board 3 to move up and down. By grasping the holding part of the handle 41 with the hand and rotating the handle 41, the handle 41 pulls the lifting rod 43 through the connecting rod 42. The lifting rod 43 is slidably connected to the sleeve 44, and the lifting rod 43 moves up and down within the sleeve 44, thereby driving the test board 3 to move up and down.

[0047] In order to ensure that the test board 3 is stably hoisted above the workbench, in this embodiment, referring to Figure 1 and Figure 2 , the bracket 2 includes a support plate 21, a vertical plate 22 and a horizontal plate 23. The two support plates 21 are vertically arranged on the base 1. The vertical plate 22 is arranged vertically between the two support plates 21. The horizontal plate 23 is arranged horizontally between the two support plates 21, and the horizontal plate 23 is vertically arranged on the back of the vertical plate 22.

[0048] It can be understood that with such an arrangement, the two support plates 21 play a supporting role, the vertical plate 22 is used to install the pressing device 4, and the horizontal plate 23 is used to strengthen the structure between the support plate 21 and the vertical plate 22, so that the vertical plate 22 will not easily bend and deform, thereby ensuring that the test board 3 will not shake when hoisted on the workbench, and ensuring that the test needle assembly 5 can accurately align with the test points of the protection board.

[0049] The working process of this embodiment is as follows: put the protection board into the workbench from the material inlet 13, and then position it through the C-shaped positioning groove 12. According to the position and quantity of the test points of the protection board, install the corresponding test needle assembly 5 into the first installation groove 33 or the second installation groove 34, press down the pressing device 4, and press the test board 3 and the test needle assembly 5 against the protection board to perform the electrical test of the protection board.

[0050] The lithium battery protection board testing device of the embodiment of the present application is reasonably designed, easy to use, and convenient for quickly and efficiently performing the electrical test of the lithium battery protection board. Through the cooperation of the pressing device 4 and the test needle assembly 5, the accurate alignment of the thimble 51 and the protection board is realized, and the protection board is accurately detected. Before the test, the test points of the protection board are pressed by the thimble 51 to ensure that the protection board can be stably positioned on the workbench during the test process. The test position and sequence are operated according to the installation position of the thimble 51, which improves the test efficiency and the yield rate, and can adapt to the electrical tests of different models of lithium battery protection boards, achieving the purpose of cost saving.

[0051] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A lithium battery protection board testing device, characterized in that, The utility model comprises a base, a bracket, a test plate and a clamp, wherein a workbench for placing a protective plate is arranged on the base, the bracket is arranged vertically on one side of the base, the test plate is movably arranged on the bracket through the clamp and is located directly above the workbench; the test plate and the workbench are arranged parallel to each other, the test plate is provided with a plurality of test pin assemblies, the test plate is pressed down to the workbench by the clamp to drive the ejector pins of the test pin assemblies to contact the test points of the protective plate for electrical testing; the test plate is divided into a first installation area and a second installation area in the width direction, the first installation area is provided with a first installation groove along the length direction of the test plate, the second installation area is provided with a second installation groove along the width direction of the test plate, a plurality of second installation grooves are arranged side by side along the length direction, and positioning steps for installing the test pin assemblies are provided in the first installation groove and the second installation groove.

2. The lithium battery protection board testing device according to claim 1, wherein, The test pin assembly includes a ejector pin, a mounting block and a positioning block, the ejector pin is vertically arranged on the mounting block, the positioning block is assembled with a positioning step, the mounting block is located below the test board, the positioning block and the mounting block are fixed by bolts to vertically fix the ejector pin on the test board; the upper and lower ends of the ejector pin are respectively exposed from the upper and lower sides of the mounting block, the lower end of the ejector pin is arranged as a contact end contacting the test point of the protection plate, the upper end of the ejector pin serves as a wiring terminal connected to the tester, and the wiring terminal is not higher than the test board.

3. The lithium battery protection board testing device according to claim 2, characterized in that The positioning block is in the shape of a cuboid.

4. The lithium battery protection board testing device according to claim 3, characterized in that, A screw hole is provided at the center of the positioning block, an oblong hole is provided at the center of the mounting block, and the bolt is installed between the screw hole and the oblong hole.

5. The lithium battery protection board testing device according to claim 1, wherein, The first installation area is provided with a first installation slot, and the second installation area is provided with eighteen second installation slots side by side.

6. The lithium battery protection board testing device according to claim 1, characterized in that The base is provided with three positioning plates on the workbench, and the three positioning plates form a C-shaped positioning groove for positioning and placing the protection plate, and the opening of the C-shaped positioning groove is arranged as a material opening for taking and placing the protection plate.

7. The lithium battery protection board testing device according to claim 6, characterized in that, The base is provided with a plurality of mounting holes distributed in a matrix at the workbench, and the positioning plate is fixedly connected to the corresponding mounting holes by screws.

8. The lithium battery protection board testing device according to claim 7, characterized in that A pad is vertically arranged downwardly on the edge of the base, and the pad is provided with an operation opening.

9. The lithium battery protection board testing device according to claim 1, wherein The clamp includes a handle, a connecting rod, a lifting rod and a sleeve. The handle is transmission-connected to the lifting rod through the connecting rod. The sleeve is fixedly connected to the vertical plate of the bracket. The lifting rod is inserted into the sleeve. The lower end of the lifting rod is fixedly connected to the test plate. The upper end of the lifting rod is pivotally connected to the connecting rod. One end of the handle is set as a gripping part. The other end of the handle is pivotally connected to the connecting rod. The middle part of the handle is pivotally connected to the sleeve.

10. The lithium battery protection board testing device according to claim 9, wherein The bracket includes a support plate, a vertical plate and a horizontal plate, the two support plates are vertically arranged on the base, the vertical plate is arranged between the two support plates in the vertical direction, the horizontal plate is arranged between the two support plates in the horizontal direction, and the horizontal plate is vertically arranged on the back of the vertical plate.

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