A lithium battery charging and discharging test fixture

Abstract

The utility model provides a lithium battery charge and discharge test fixture, comprising a moving mechanism and a clamping mechanism, the clamping mechanism comprising a clamping group and a driving group, the clamping group comprising an upper clamping plate and a lower clamping plate which are arranged in parallel, two connecting terminals are symmetrically arranged at the lower end of the upper clamping plate, which are respectively used for contacting with two pole ear end faces of a battery pole ear for electrical connection, the clamping mechanism is arranged on the moving mechanism so as to be able to stably approach the battery, and the driving group is used to drive the clamping group to contact and clamp the battery pole ear group, the clamping area is large, and the battery is suitable for batteries of different sizes, and the contact is excellent, and the battery is not easily disturbed by the connecting wire, and the clamping is more flexible when clamping, and the clamping force is more consistent, so as to ensure that the test result after clamping can be accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a lithium battery charging and discharging test fixture. Background Art

[0002] When the battery is charged and discharged, it is necessary to dock the battery ears. Most of the traditional battery charging and discharging fixtures use a structure similar to an alligator clip. The clamping width of the battery ears is small and is not suitable for testing batteries of different sizes. If a large-sized alligator clip is replaced, it will increase the difficulty of manually pressing and opening the clamping device. Inaccurate clamping can easily cause problems such as non-parallel clamping contact surfaces and poor contact, affecting the results of subsequent tests.

[0003] In view of this, the applicant filed this application after studying the existing technology. Utility Model Content

[0004] The utility model provides a lithium battery charging and discharging test fixture, aiming to improve at least one of the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides a lithium battery charging and discharging test fixture, comprising a moving mechanism and a clamping mechanism, wherein the clamping mechanism is arranged on the moving mechanism to move the output end of the clamping mechanism close to the battery pole ear to be clamped; the clamping mechanism comprises a clamping group and a driving group, the output end of the driving group is connected to the clamping group, and is used to drive the clamping group to clamp or release the battery pole ear; the clamping group comprises an upper clamping plate and a lower clamping plate arranged in parallel, and two connecting terminals are symmetrically arranged at the lower end of the upper clamping plate, and the two connecting terminals are respectively used to contact with the two pole ear end surfaces of the battery pole ear for electrical connection, wherein the two connecting terminals are insulated from each other.

[0006] As a further optimization, the clamping mechanism also includes a support and guide group, which includes a base plate and multiple guide columns, the upper ends of the guide columns are fixedly connected to the upper clamping plate, and the lower ends are fixedly connected to the base plate; the guide columns pass through the lower clamping plate so that the lower clamping plate can limit the movement in the axial direction of the guide columns.

[0007] As a further optimization, the driving group includes a first screw rod group, a second screw rod group, two sliders, two hinged rods and an abutment plate. A base is arranged between the bottom plate and the guide column. The first screw rod group and the second screw rod group are symmetrically and coaxially installed on multiple bases. The two sliders are respectively installed on the first screw rod group and the second screw rod group. One end of the hinged rod is hinged to the slider, and the other end is hinged to the abutment plate.

[0008] As a further optimization, the clamping group also includes a support plate and a plurality of spring assemblies, wherein the lower end of the spring assembly is mounted on the support plate, and the upper end is mounted on the bottom of the lower clamping plate, and the bottom of the support plate is connected to the abutment plate.

[0009] As a further optimization, a plurality of sliding sleeves are slidably arranged on the guide column, and the outer ends of the sliding sleeves are fixedly connected to the support plate.

[0010] As a further optimization, the drive group also includes a handwheel, and the handwheel is installed at one end of the first screw rod group.

[0011] As a further optimization, the moving mechanism includes a first slide rail, a first slide table and a support table, the first slide rail is horizontally arranged, the first slide table is installed on the first slide rail, the support table is installed above the first slide table, and the support table is used to install the clamping mechanism.

[0012] As a further optimization, it also includes a second slide rail and a second slide platform, the second slide rail is longitudinally arranged above the first slide platform, the second slide platform is slidably connected to the second slide rail, and the support platform is installed on the second slide platform.

[0013] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0014] The present application provides a lithium battery charge and discharge test fixture, including a moving mechanism and a clamping mechanism, the clamping mechanism including a clamping group and a driving group, the clamping group including an upper clamping plate and a lower clamping plate arranged in parallel, two connecting terminals are symmetrically arranged at the lower end of the upper clamping plate, which are respectively used to contact with the two pole ear end faces of the battery pole ear for electrical connection, by arranging the clamping mechanism on the moving mechanism, it can be stably close to the battery, and the driving group is used to drive the clamping group to contact and clamp the battery pole ear group, the clamping area is large, suitable for batteries of different sizes, and the contact is excellent, not easily disturbed by the connecting wire, more flexible when clamping, and the clamping force is more consistent, ensuring that the test results after clamping can be accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a front structural schematic diagram of a lithium battery charging and discharging test fixture of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of a lithium battery charging and discharging test fixture of the utility model;

[0018] Figure 3 The utility model is a side structural schematic diagram of a lithium battery charging and discharging test fixture.

[0019] Markings in the figure: 1. Clamping group; 2. Driving group; 3. Support and guide group; 4. Upper clamping plate; 5. Lower clamping plate; 6. Connecting terminal; 7. Bottom plate; 8. Guide column; 9. Base; 10. First screw rod group; 11. Second screw rod group; 12. Sliding block; 13. Articulated rod; 14. Abutment plate; 15. Handwheel; 16. Support plate; 17. Spring assembly; 18. Sliding sleeve; 19. First slide rail; 20. First slide table; 21. Second slide rail; 22. Second slide table; 23. Support table. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the implementation mode of the utility model clearer, the technical scheme in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all of the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the implementation mode of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the utility model. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Depend on Figures 1 to 3As shown, the embodiment of the utility model provides a lithium battery charge and discharge test fixture, including a moving mechanism and a clamping mechanism, wherein the clamping mechanism is arranged on the moving mechanism, and the output end of the clamping mechanism can be moved by the moving mechanism to be close to the battery pole ear to be clamped, or the pole ear can be connected to the clamping mechanism by moving the battery. The clamping mechanism includes a clamping group 1 and a driving group 2, wherein the output end of the driving group 2 is connected to the clamping group 1, and is used to drive the clamping group 1 to clamp or release the battery pole ear; the clamping group 1 includes an upper clamping plate 4 and a lower clamping plate 5 arranged in parallel, and two connecting terminals 6 are symmetrically arranged at the lower end of the upper clamping plate 4, and the end faces of the two connecting terminals 6 are also arranged horizontally, and are respectively used to contact with the two pole ear end faces of the battery pole ear for electrical connection, and the two connecting terminals 6 are insulated, wherein the insulation isolation can be achieved by spacing or by setting an isolation layer. In this way, the battery tabs can be accurately and stably clamped by the clamping group 1 with a larger area, which can be suitable for batteries of different sizes, especially large-sized soft-package lithium batteries. Since the clamping group 1 is driven by the driving group 2 for clamping, it does not need to be pressed manually, which is more labor-saving and avoids clamping errors. Among them, the two connecting terminals 6 themselves can be directly connected to the charging and discharging wires in an integrated manner or the wires can be connected by locking. The whole clamp is relatively stable, so if the wires are accidentally touched, it will not affect the clamping state and the battery cell. No further details will be given here.

[0022] Preferably, the clamping mechanism also includes a support guide group 3, which includes a base plate 7 and multiple guide columns 8. The upper ends of the guide columns 8 are fixedly connected to the upper clamp plate 4, and the lower ends are fixedly connected to the base plate 7. The guide columns 8 pass through the lower clamp plate 5 so that the lower clamp plate 5 can be limited to move in the axial direction of the guide columns 8. Since the guide columns 8 are perpendicular to the upper clamp plate 4, the lower clamp plate 5 can only remain parallel to the upper clamp plate 4 when moving, thereby ensuring that the clamping is more stable and the contact is better.

[0023] Furthermore, the driving group 2 includes a first screw rod group 10, a second screw rod group 11, two sliders 12, two hinged rods 13 and an abutment plate 14. A base 9 is provided between the bottom plate 7 and the guide column 8. The first screw rod group 10 and the second screw rod group 11 are symmetrically coaxially installed on a plurality of bases 9. The two sliders 12 are installed on the first screw rod group 10 and the second screw rod group 11 respectively. One end of the hinged rod 13 is hinged to the slider 12, and the other end is hinged to the abutment plate 14. As an embodiment, the first screw rod group 10 and the second screw rod group 11 can be a left-handed and a right-handed ball screw, and the two are coaxially connected. When rotating, they can simultaneously drive the sliders 12 on the two to approach or move away at the same time, so that by adjusting the angle between the hinged rod 13 and the abutment plate 14, the abutment plate 14 is raised or lowered, thereby driving the clamping group 1 above to clamp or release. Among them, it can be known that in this embodiment, four guide columns 8 and four bases 9 are respectively provided, and both ends of the first screw rod group 10 and the second screw rod group 11 are rotatably installed on the bases 9 at both sides, and the middle is designed to pass through the two bases 9 located in the middle. Furthermore, as an implementation method, a hand wheel 15 is connected to the side end of the first screw rod group 10 for rotation, which is used as a driving source, which is very convenient.

[0024] Preferably, the clamping group 1 also includes a support plate 16 and a plurality of spring components 17, the lower end of the spring component 17 is mounted on the support plate 16, and the upper end is mounted on the bottom of the lower clamping plate 5, the bottom of the support plate 16 is connected to the abutment plate 14, and the abutment plate 14 of the driving group 2 is raised or lowered to drive the support plate 16 connected thereto to rise or fall, and at the same time, the lower clamping plate 5 can be driven to rise and clamp or descend to release the battery pole ear, wherein, since the spring component 17 is arranged between the support plate 16 and the lower clamping plate 5, when rising and clamping, the clamping force on the battery pole ear can be gradually increased, and it is a flexible clamping, which will not cause damage due to excessive or hard clamping, and at the same time helps to maintain the consistency of the clamping force. Among them, the spring component 17 can be only a spring, but as a preferred method, the spring component 17 can be a combination of a spring, a pin column and a pin sleeve, and by sleeve-connecting the spring to the pin column and sleeve-on the pin sleeve, the structural stability of the spring can be effectively guaranteed, and it is not easy to bend and affect the elastic force factor, which will not be elaborated here.

[0025] Preferably, a plurality of sliding sleeves 18 are slidably provided on the guide column 8, and the outer ends of the sliding sleeves 18 are fixedly connected to the support plate 16, thereby facilitating the stability and smoothness of the support plate 16 when moving on the guide column 8.

[0026] Preferably, the moving mechanism includes a first slide rail 19, a first slide 20 and a support platform 23, the first slide rail 19 is horizontally arranged, the first slide 20 is mounted on the first slide rail 19, the support platform 23 is mounted above the first slide 20, and the support platform 23 is used to install a clamping mechanism for connecting with the bottom plate 7, wherein the bottom plate 7 is insulated. By using the first slide rail 19 and the first slide 20 as a position adjustment method in the horizontal direction, the clamping mechanism can be more stably approached or away from the battery pole ear for clamping through the support platform 23. Further, it also includes a second slide rail 21 and a second slide 22, the second slide rail 21 is longitudinally arranged above the first slide 20, the second slide 22 is slidably connected to the second slide rail 21, and the support platform 23 is mounted on the second slide 22. By using the second slide rail 21 and the second slide 22 as a position adjustment method in the longitudinal direction, the clamping mechanism can be adjusted in height through the support platform 23 so as to dock the battery pole ears at different positions. The first slide 20 and the second slide 22 can be fixed by means of locking bolts, or can be moved by means of an electric slide, which will not be described in detail here.

[0027] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lithium battery charge and discharge test fixture, characterized in that: It comprises a moving mechanism and a clamping mechanism, wherein the clamping mechanism is arranged on the moving mechanism to move the output end of the clamping mechanism close to the battery tab to be clamped; The clamping mechanism comprises a clamping group and a driving group, wherein the output end of the driving group is connected to the clamping group and is used to drive the clamping group to clamp or release the battery tab; The clamping group includes an upper clamping plate and a lower clamping plate which are arranged in parallel, and two connecting terminals are symmetrically arranged at the lower end of the upper clamping plate. The two connecting terminals are respectively used to contact with the two end surfaces of the battery tabs for electrical connection, wherein the two connecting terminals are insulated from each other.

2. A lithium battery charge and discharge test fixture according to claim 1, characterized in that The clamping mechanism also includes a support guide group, which includes a base plate and multiple guide columns. The upper ends of the guide columns are fixedly connected to the upper clamping plate, and the lower ends are fixedly connected to the base plate. The guide columns pass through the lower clamping plate so that the lower clamping plate can limit the movement in the axial direction of the guide columns.

3. A lithium battery charge and discharge test fixture according to claim 2, characterized in that The driving group includes a first screw rod group, a second screw rod group, two sliders, two hinged rods and an abutment plate. A base is arranged between the bottom plate and the guide column. The first screw rod group and the second screw rod group are symmetrically and coaxially installed on multiple bases. The two sliders are respectively installed on the first screw rod group and the second screw rod group. One end of the hinged rod is hinged to the slider, and the other end is hinged to the abutment plate.

4. A lithium battery charge and discharge test fixture according to claim 3, characterized in that The clamping group also includes a support plate and a plurality of spring assemblies, the lower end of the spring assembly is mounted on the support plate, and the upper end is mounted on the bottom of the lower clamping plate, and the bottom of the support plate is connected to the abutment plate.

5. A lithium battery charge and discharge test fixture according to claim 4, characterized in that A plurality of sliding sleeves are slidably arranged on the guide column, and the outer ends of the sliding sleeves are fixedly connected to the support plate.

6. A lithium battery charge and discharge test fixture according to claim 3, characterized in that The driving group also includes a handwheel, which is installed at one end of the first screw rod group.

7. A lithium battery charge and discharge test fixture according to claim 1, characterized in that The moving mechanism includes a first slide rail, a first slide table and a support table. The first slide rail is horizontally arranged, the first slide table is installed on the first slide rail, the support table is installed above the first slide table, and the support table is used to install the clamping mechanism.

8. A lithium battery charge and discharge test fixture according to claim 7, characterized in that , also includes a second slide rail and a second slide platform, the second slide rail is longitudinally arranged above the first slide platform, the second slide platform is slidably connected to the second slide rail, and the support platform is installed on the second slide platform.

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