Soft package battery test tool

Abstract

The utility model discloses a soft package battery test tool comprising a support assembly used for placing a battery to be tested, a probe assembly used for carrying out an OCV test on the battery to be tested, and a thickness measuring assembly used for carrying out a battery thickness test on the battery to be tested, and the probe assembly and the thickness measuring assembly are both installed on the support assembly. According to the invention, the test efficiency can be improved, the personnel consumption can be reduced, the operation is simple and easy to master, the test can be completed by only one person, the OCV and thickness detection of the battery can be completed at the same time, the test efficiency is greatly improved, and the personnel consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery testing, in particular to a soft-pack battery testing tool. Background Art

[0002] Lithium-ion batteries have the advantages of high energy density, long cycle life, low self-discharge, no memory, safety and environmental protection. They are widely used in many fields such as 3C electronics, new energy vehicles, aerospace, etc. They are mainly divided into three categories according to their structural form: soft-pack, square and cylindrical. Soft-pack batteries have low internal resistance, light weight, strong designability, and their energy density can be increased by 5% compared to aluminum shells and steel shells, so they are widely used.

[0003] With the development of new energy battery technology, solid-state batteries and semi-solid-state batteries have become important research directions. Compared with liquid batteries, semi-solid-state batteries have higher energy density and safety performance, and can provide longer driving range. Nowadays, large-scale power semi-solid-state high-energy-density batteries have been used in scenarios such as new energy vehicles and drones. Due to the requirements of lightweight and high energy density, semi-solid-state batteries are currently mostly in the form of soft packs.

[0004] During the aging process of soft-pack batteries, OCV and thickness testing are required to determine the battery's self-discharge and state of charge, while also assessing its health. However, existing automated equipment requires OCV and battery thickness testing in two separate steps, resulting in low efficiency. Utility Model Content

[0005] In response to the problem pointed out in the above background technology that the current OCV test and thickness detection of soft-pack batteries need to be conducted in two steps, which is inefficient, the purpose of the present utility model is to provide a soft-pack battery testing tool.

[0006] In order to achieve the purpose of this utility model, the technical solution provided by this utility model is as follows:

[0007] A soft-pack battery testing tool comprises a bracket assembly for placing a battery to be tested, a probe assembly for performing an OCV test on the battery to be tested, and a thickness measuring assembly for performing a battery thickness test on the battery to be tested, wherein the probe assembly and the thickness measuring assembly are both mounted on the bracket assembly.

[0008] It also includes a cylinder assembly and a pressure plate for pressing the battery to be tested; the cylinder assembly is installed on the top of the bracket assembly, and the lower end of the cylinder assembly is connected to the pressure plate and can drive the pressure plate to move upward or downward; the probe assembly is installed on the side of the pressure plate, and the thickness measuring assembly is installed on one side of the top of the bracket assembly.

[0009] It also includes a slide assembly for carrying and limiting the battery to be tested, and the slide assembly is arranged at the bottom of the bracket assembly.

[0010] Wherein, the bracket assembly includes a bottom plate, a top support plate, and two side support plates, the lower ends of the two side support plates are respectively connected to the corresponding two sides of the bottom plate, and the upper ends of the two side support plates are connected through the top support plate, and the bottom plate, the top support plate, and the two side support plates form a receiving cavity;

[0011] The cylinder assembly is installed on the upper end of the top support plate, the pressure plate is located in the accommodating cavity, and the slide plate assembly is arranged on the upper end of the bottom plate in the accommodating cavity.

[0012] Wherein, both sides of the upper end of the base plate are provided with inverted L-shaped guide rods for guiding and limiting the horizontal movement of the slide plate assembly.

[0013] Wherein, a stopper is provided at one end of the base plate for limiting the position of the slide plate assembly.

[0014] In which, the skateboard assembly includes a skateboard base plate, two battery limiting plates and a tab limiting block; the skateboard base plate is provided with a battery limiting plate mounting groove for fixing the battery limiting plate and is arranged horizontally, and each of the battery limiting plates is provided with a tab limiting block mounting hole for fixing the tab limiting block and is arranged longitudinally, and each battery limiting plate is connected to two tab limiting blocks; the positions of the tab limiting blocks and the battery limiting plates can be adjusted according to the model of the battery to be tested; the two side ends of the skateboard base plate are respectively located in the horizontal movement guide limiting structure formed by the inverted L-shaped guide rod and the base plate.

[0015] Among them, the cylinder assembly includes a cylinder and a stroke guide column; the cylinder is installed on the upper end of the top support plate, and its piston rod is connected to the pressure plate. The stroke guide column passes through the top support plate and is slidably connected, and its lower end is connected to the upper end of the pressure plate.

[0016] Among them, the probe assembly includes a probe and a probe holder, the probe holder is provided with two rows of positioning holes, and the probe is provided with two positioning columns used in conjunction with the two rows of positioning holes. The two positioning columns can be inserted into the positioning holes on the corresponding sides to achieve the fixation of the probe and the probe holder; a probe assembly mounting groove is provided on both sides of the pressure plate in the thickness direction, and the probe holder is installed in the probe assembly mounting groove. The position of the probe can be adjusted according to the size of the battery to be tested, and the probe is externally connected to the voltage internal resistance tester.

[0017] Among them, the thickness measuring assembly includes a thickness tester, an L-shaped first thickness tester fixing block, and a second thickness tester fixing block; one end of the first thickness tester fixing block is installed in the mounting hole of the thickness measuring assembly on the top support plate, and the other end is connected to the second thickness tester fixing block to form a fixing hole between the two, and the thickness tester is installed in the fixing hole.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This application can improve test efficiency and reduce personnel consumption. It is simple to operate and easy to use. Only one person is needed to complete the test, and the battery OCV and thickness detection can be completed at the same time, which greatly improves test efficiency and reduces personnel consumption.

[0020] In addition, the present application can adapt to a variety of battery models and improve the utilization rate of tooling. The tooling design of the present application is ingenious. The probe can be fixed on one side at the same time through the fixture to complete the test of the tab on the same side, or it can be fixed on both sides to complete the test of batteries with tabs on both sides. The battery limiting plate and the tab limiting plate can be adjusted in position through the slide groove, and the pressure of the pressure plate can be adjusted. Such a design can adapt to batteries of various models, sizes and requirements without the need to replace different tooling, which greatly reduces the cost and complexity of testing.

[0021] In addition, the present application can protect the battery. During the test process, the battery is fixed by the pressure plate, which prevents the battery from moving during the test, thereby protecting the battery and improving the consistency of the battery test;

[0022] In addition, this application can simultaneously complete the detection of battery OCV and thickness, reducing the movement of the battery, ensuring the quality and safety of the battery, and reducing the battery defect rate;

[0023] In addition, the present application can improve the test accuracy. The present application moves the cylinder downward to make the probe contact the battery's tab, and then performs the test through a voltage internal resistance tester. This design can avoid operator errors and improve the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of the test tool provided in this embodiment;

[0025] Figure 2 A schematic structural diagram of the bracket assembly provided in this embodiment;

[0026] Figure 3 A schematic structural diagram of the cylinder assembly and the pressure plate provided in this embodiment;

[0027] Figure 4 A schematic structural diagram of the slide assembly provided in this embodiment;

[0028] Figure 5 A first schematic diagram of the structure of the probe assembly provided in this embodiment;

[0029] Figure 6 A first schematic diagram of the structure of the probe assembly provided in this embodiment;

[0030] Figure 7 This is a schematic structural diagram of the thickness measurement assembly provided in this embodiment.

[0031] Figure markings: 1. bracket assembly; 2. cylinder assembly; 3. pressure plate; 4. slide assembly; 5. probe assembly; 6. thickness measuring assembly; 10. bottom plate; 11. side support plate; 12. stop block; 13. linear bearing; 14. top support plate; 15. reinforcing rib; 16. guide rod; 20. cylinder; 21. cylinder connecting plate; 22. travel guide column; 23. cylinder connecting block; 24. cylinder connecting rod; 40. slide bottom plate; 41. battery limit plate; 42. tab limit block; 43. battery limit plate mounting groove; 44. tab limit block mounting hole; 50. probe holder; 51. probe; 52. positioning hole; 53. positioning column; 60. thickness tester; 61. first thickness tester fixing block; 62. second thickness tester fixing block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood broadly. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set, and can refer to direct connection or indirect connection. Those skilled in the art can understand the specific meanings of the above terms in this patent based on specific circumstances.

[0035] like Figure 1-Figure 7 The structure of the embodiment of the present application is shown.

[0036] Example 1

[0037] The existing automated equipment needs to test OCV and battery thickness in two steps, which is inefficient.

[0038] This embodiment provides a soft-pack battery testing tool, including a bracket assembly 1 for placing a battery to be tested, a probe assembly 5 for performing an OCV test on the battery to be tested, and a thickness measuring assembly 6 for performing a battery thickness test on the battery to be tested, wherein the probe assembly 5 and the thickness measuring assembly 6 are both installed on the bracket assembly 1.

[0039] Specifically, the bracket assembly 1 includes a base plate 10, a top support plate 14, two side support plates 11, reinforcing ribs 15, linear bearings 13, and blocks 12. The lower ends of the two side support plates 11 are connected to the corresponding sides of the base plate 10, and the upper ends of the two side support plates 11 are connected by the top support plate 14. The base plate 10, top support plate 14, and two side support plates 11 form a receiving cavity; the pressure plate 3 is located in the receiving cavity.

[0040] The top support plate 14 is provided with mounting holes for installing the cylinder assembly 2 and the linear bearing 13, and a groove for installing the thickness measuring assembly 6. The linear bearing 13 is installed in the mounting hole at the corresponding position, and the thickness measuring assembly 6 is installed in the groove. The reinforcing rib 15 is installed on the top support plate 14. The tail of the base plate 10 is provided with a stop block 12 to limit the slide assembly 4; both sides of the upper end of the base plate 10 are provided with an inverted L-shaped guide rod 16 for guiding and limiting the horizontal movement of the slide assembly 4.

[0041] This application can improve test efficiency and reduce personnel consumption. It is simple to operate and easy to use. Only one person is needed to complete the test, and the battery OCV and thickness detection can be completed at the same time, which greatly improves test efficiency and reduces personnel consumption.

[0042] Example 2

[0043] In order to address the problem that the tabs are prone to collision with equipment during testing, causing damage to the tabs and increasing the defective rate of the battery, the cylinder assembly 2 provided in this embodiment includes a cylinder 20, a cylinder mounting plate 21, a cylinder connecting rod 24, a cylinder connecting block 23 and a stroke guide column 22; the cylinder mounting plate 21 is provided with a cylinder mounting hole, the cylinder 20 is installed in the cylinder mounting hole, the cylinder mounting plate 21 is installed in the mounting hole of the top support plate 14, one end of the cylinder connecting rod 24 is installed on the piston rod of the cylinder 20, and the other end of the cylinder connecting rod 24 is connected to the cylinder connecting block 23, the lower end of the cylinder connecting block 23 is connected to the upper end of the pressure plate 3, the lower end of the stroke guide column 22 is connected to the upper end of the pressure plate 3, and its upper end passes through the top support plate 14 and is slidably connected, specifically, it is respectively arranged in the linear bearings 13 at the four corners.

[0044] This application can protect the battery. During the test process, the battery is fixed by the pressure plate, which prevents the battery from moving during the test, thereby protecting the battery and improving the consistency of the battery test.

[0045] Example 3

[0046] To address the problem of unstable equipment testing in the prior art, which affects the consistency and accuracy of the test results, the test fixture provided in this embodiment also includes a slide assembly 4 for supporting and limiting the battery to be tested, and the slide assembly 4 is arranged on the upper end of the bottom plate 10 in the accommodating cavity.

[0047] Specifically, the skateboard assembly 4 includes a skateboard base plate 40, two battery limiting plates 41 and a tab limiting block 42; the skateboard base plate 40 is provided with a battery limiting plate mounting groove 43 for fixing the battery limiting plate 41 and arranged horizontally, and each battery limiting plate 41 is provided with a tab limiting block mounting hole 44 for fixing the tab limiting block 42 and arranged longitudinally, and each battery limiting plate 41 is connected to two tab limiting blocks 42; the positions of the tab limiting blocks 42 and the battery limiting plates 41 can be adjusted according to the model of the battery to be tested; the two side ends of the skateboard base plate 40 are respectively located in the horizontal movement guide limiting structure formed by the inverted L-shaped guide rod 16 and the base plate 10. Among them, the tab limiting block can be fixed by using a screw that passes through the tab limiting block 42 and is then tightened in the tab limiting block mounting hole 44. The battery limiting plate 41 can be fixed by using a screw that passes through the tab limiting block mounting hole 44 and is then tightened in the battery limiting plate mounting groove 43.

[0048] In addition, a probe assembly mounting groove is provided on both sides of the pressing plate 3 in the thickness direction, and a probe assembly 5 is installed on each side. The probe assembly 5 includes a probe 51 and a probe holder 50. The probe holder 50 is provided with two rows of positioning holes 52. The probe 51 is provided with two positioning posts 53 used in conjunction with the two rows of positioning holes 52. The two positioning posts 53 can be inserted into the positioning holes 52 on the corresponding side to achieve the fixation of the probe 51 and the probe holder 50. When the position needs to be changed, they can also be pulled out from the positioning holes 52 and replaced and inserted into the positioning holes 52 at other positions. A probe assembly mounting groove is provided on both sides of the pressing plate 3 in the thickness direction, and the probe holder 50 is installed in the probe assembly mounting groove. The position of the probe 51 can be adjusted according to the size of the battery to be tested, and the probe 51 is externally connected to the voltage and internal resistance tester.

[0049] In addition, the thickness measuring assembly (6) includes a thickness tester 60, an L-shaped first thickness tester fixing block 61, and a second thickness tester fixing block 62; one end of the first thickness tester fixing block 61 is installed in the mounting hole of the thickness measuring assembly on the top support plate 14, and the other end is connected to the second thickness tester fixing block 62, forming a fixing hole therebetween, and the thickness tester 60 is installed in the fixing hole.

[0050] During operation, the battery to be tested is fixed by the slide assembly, and the cylinder assembly 2 is externally connected to a switch device. When the switch is pressed, the cylinder 20 drives the pressure plate 3 to move downward, and the probe 51 also moves downward with the pressure plate 3. The battery to be tested is placed on the slide assembly 4. When the pressure plate 3 presses the main body of the battery to be tested, the cylinder 20 stops moving downward. At this time, the probe 51 contacts the tab of the battery to be tested. At this time, the external voltage internal resistance tester and thickness tester 60 test the results, and the test is completed. Press the switch, the cylinder moves upward, remove the battery to be tested, and prepare for the next test.

[0051] The test fixture for soft-pack batteries provided by the utility model is simple in device and easy to operate. It can perform OCV and thickness tests at the same time, and meets the test requirements of batteries with tabs on the same side and tabs on both sides. It is suitable for various types of batteries. This fixture has high utilization rate and strong adaptability, can reduce personnel consumption, improve work efficiency, and improve the consistency and stability of experimental results, which has practical promotion significance.

[0052] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A soft pack battery testing tool, characterized in that: The device comprises a support assembly (1) for placing a battery to be tested, a probe assembly (5) for performing an OCV test on the battery to be tested, and a thickness measuring assembly (6) for performing a battery thickness test on the battery to be tested, wherein the probe assembly (5) and the thickness measuring assembly (6) are both mounted on the support assembly (1); It also includes a cylinder assembly (2) and a pressure plate (3) for pressing the battery to be tested; the cylinder assembly (2) is installed on the top of the bracket assembly (1), and the lower end of the cylinder assembly (2) is connected to the pressure plate (3) and can drive the pressure plate (3) to move upward or downward; the probe assembly (5) is installed on the side of the pressure plate (3), and the thickness measuring assembly (6) is installed on one side of the top of the bracket assembly (1); It also includes a slide plate assembly (4) for carrying and limiting the battery to be tested, and the slide plate assembly (4) is arranged at the bottom of the bracket assembly (1).

2. The soft pack battery testing tool according to claim 1, characterized in that: The bracket assembly (1) comprises a bottom plate (10), a top support plate (14), and two side support plates (11); the lower ends of the two side support plates (11) are respectively connected to the corresponding two sides of the bottom plate (10); the upper ends of the two side support plates (11) are connected through the top support plate (14); and the bottom plate (10), the top support plate (14), and the two side support plates (11) form a receiving cavity; The cylinder assembly (2) is mounted on the upper end of the top support plate (14), the pressure plate (3) is located in the accommodating cavity, and the slide plate assembly (4) is arranged on the upper end of the bottom plate (10) in the accommodating cavity.

3. The soft pack battery testing tool according to claim 2, characterized in that: Both sides of the upper end of the base plate (10) are provided with inverted L-shaped guide rods (16) for guiding and limiting the horizontal movement of the slide plate assembly (4).

4. The soft pack battery testing tool according to claim 3, characterized in that: A stopper (12) for limiting the position of the slide assembly (4) is provided at one end of the bottom plate (10).

5. The soft pack battery testing tool according to claim 3, characterized in that: The slide assembly (4) comprises a slide base plate (40), two battery limiting plates (41) and a tab limiting block (42); the slide base plate (40) is provided with a battery limiting plate mounting groove (43) arranged transversely for fixing the battery limiting plate (41), each battery limiting plate (41) is provided with a tab limiting block mounting hole (44) arranged longitudinally for fixing the tab limiting block (42), and each battery limiting plate (41) is connected to two tab limiting blocks (42); the positions of the tab limiting blocks (42) and the battery limiting plates (41) can be adjusted according to the model of the battery to be tested; the two side ends of the slide base plate (40) are respectively located in the horizontal movement guide limiting structure formed by the inverted L-shaped guide rod (16) and the base plate (10).

6. The soft pack battery testing tool according to claim 2, characterized in that: The cylinder assembly (2) includes a cylinder (20) and a travel guide column (22); the cylinder (20) is installed on the upper end of the top support plate (14), and its piston rod is connected to the pressure plate (3); the travel guide column (22) passes through the top support plate (14) and is slidably connected, and its lower end is connected to the upper end of the pressure plate (3).

7. The soft pack battery testing tool according to claim 2, characterized in that: The probe assembly (5) comprises a probe (51) and a probe holder (50), the probe holder (50) is provided with two rows of positioning holes (52), the probe (51) is provided with two positioning posts (53) used in conjunction with the two rows of positioning holes (52), the two positioning posts (53) can be inserted into the positioning holes (52) on the corresponding sides to achieve the fixation of the probe (51) and the probe holder (50); a probe assembly mounting groove is respectively provided on both sides of the pressure plate (3) in the thickness direction, the probe holder (50) is installed in the probe assembly mounting groove, the position of the probe (51) can be adjusted according to the size of the battery to be tested, and the probe (51) is externally connected to the voltage internal resistance tester.

8. The soft pack battery testing tool according to claim 2, characterized in that: The thickness measuring assembly (6) comprises a thickness tester (60), an L-shaped first thickness tester fixing block (61), and a second thickness tester fixing block (62); one end of the first thickness tester fixing block (61) is mounted in a mounting hole of the thickness measuring assembly on the top support plate (14), and the other end is connected to the second thickness tester fixing block (62), forming a fixing hole therebetween, and the thickness tester (60) is mounted in the fixing hole.

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