A lithium battery testing instrument

Abstract

The utility model discloses a lithium battery testing instrument, which relates to the technical field of lithium battery testing. It comprises a testing instrument, wherein the testing instrument is provided with a testing data display screen, and the testing instrument is provided with a lithium battery limiting mechanism on the outside, wherein the lithium battery limiting mechanism is used for connecting the lithium battery to be tested and the testing instrument, and the lithium battery limiting mechanism comprises a fixed base, and the upper end of the fixed base is fixedly connected with a fixed plate. A fixed plate and a detection movable plate are provided in the lithium battery limiting mechanism, and two elastic metal conductive plates are provided between the fixed plate and the detection movable plate. When in use, the lithium battery to be tested is placed on a support frame, and the support frame is pushed to move backward. As the lithium battery moves, the left and right ends of the lithium battery contact with the abutting protrusions on the left and right sides, and the internal resistance of the lithium battery can be monitored by the testing instrument. Moreover, the device only requires one hand to place the lithium battery in the support frame and push it backward, which is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery testing, in particular to a lithium battery testing instrument. Background Art

[0002] Lithium battery is a battery that uses lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. During the production process of lithium batteries, it is very necessary to monitor the internal resistance. Internal resistance is an important parameter of lithium batteries, which reflects the energy loss and heat generation of the battery during operation. By monitoring the internal resistance, possible problems in the production process can be discovered in time, such as uneven materials, improper processes, etc., so that corresponding measures can be taken to adjust and improve them to ensure product quality and production efficiency.

[0003] When using the existing lithium battery internal resistance detection device, the tester is usually required to hold two test pens in both hands and place them on the positive and negative poles of the lithium battery respectively, and then measure the internal resistance of the lithium battery under DC or AC conditions. This method requires two-handed operation, the operation is relatively cumbersome, and frequent testing can easily affect the stability of the tester's hands and the accuracy of the battery internal resistance value. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery testing instrument to solve the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery testing instrument, comprising a testing instrument, the testing instrument is provided with a testing data display screen, the testing instrument is provided with a lithium battery limiting mechanism outside, the lithium battery limiting mechanism is used for connecting the lithium battery to be tested with the testing instrument;

[0006] The lithium battery limiting mechanism includes a fixed base, a fixed plate is fixedly connected to the upper end of the fixed base, a detection movable plate is arranged on the right side of the fixed plate, elastic metal conductive plates are fixedly connected to adjacent side walls of the detection movable plate and the fixed plate, the elastic metal conductive plate is electrically connected to the detection instrument, a movable slide is provided at the upper end of the fixed base, a support slider is slidably connected in the movable slide, a support frame is fixedly connected to the upper end of the support slider, the support frame is located between the fixed plate and the movable plate, a baffle is arranged on the rear side of the support frame, and the baffle is fixed to the upper end of the fixed base.

[0007] Preferably, the rear ends of the adjacent side walls of the two elastic metal conductive plates are fixedly connected with a guide inclined plate and an abutment protrusion, and the guide inclined plate and the abutment protrusion are both made of metal material.

[0008] Preferably, the rear ends of the two elastic metal conductive plates away from the side walls are fixedly connected to insulating plates, and the ends of the insulating plates away from the elastic metal conductive plates are fixedly connected to abutment springs, and the ends of the two abutment springs away from the insulating plates are respectively fixedly connected to the adjacent side walls of the fixed plate and the detection movable plate.

[0009] Preferably, an adjustment groove is opened at the upper end of the fixed base, and the adjustment groove is located on the right side of the support frame. The lower end of the detection movable plate extends into the adjustment groove and is slidingly connected to the inner side of the adjustment groove. An adjustment screw is arranged on the right side of the fixed base, and the left end of the adjustment screw passes through the right side wall of the adjustment groove and is rotatably connected to the right side wall of the detection movable plate. The adjustment screw is threadedly connected to the right side wall of the adjustment groove.

[0010] Preferably, a limiting slide bar 1 is symmetrically fixedly connected to the front and rear sides of the left inner wall of the adjusting groove, the right end of the limiting slide bar 1 passes through the detection movable plate and is fixedly connected to the right inner wall of the adjusting groove, the limiting slide bar 1 is slidably connected to the detection movable plate, a stabilizing spring is sleeved on the limiting slide bar 1, the left end of the stabilizing spring is fixedly connected to the right wall of the detection movable plate, and the right end of the stabilizing spring is fixedly connected to the right inner wall of the adjusting groove.

[0011] Preferably, the rear inner wall of the movable slide is fixedly connected to a limiting slide bar 2, the front end of the limiting slide bar 2 passes through the supporting slider and is fixedly connected to the front inner wall of the movable slide, the movable slide is slidably connected to the supporting slider, a return spring is sleeved on the limiting slide bar 2, the rear end of the return spring is fixedly connected to the rear end of the movable slide, and the front end of the return spring is fixedly connected to the rear end of the supporting slider.

[0012] Preferably, the support frame is V-shaped, the inner side wall of the support frame is provided with a contact protection pad, the contact protection pad is made of rubber material, an anti-slip groove is opened on the inner side wall of the contact protection pad, and a fixed suction cup is provided at the lower end of the fixed base.

[0013] Compared with the related art, the lithium battery testing instrument provided by the utility model has the following beneficial effects:

[0014] 1. The device is provided with a lithium battery limiting mechanism, in which a fixed plate and a detection movable plate are provided, and two elastic metal conductive plates are provided between the fixed plate and the detection movable plate. When in use, the lithium battery to be detected is placed on the support frame, and the support frame is pushed to move backward. As the lithium battery moves, the left and right ends of the lithium battery contact with the abutment protrusions on the left and right sides, and the internal resistance of the lithium battery can be monitored by the detection instrument. The device only needs to place the lithium battery in the support frame with one hand and push it backward, which is more convenient to use. When the left and right ends of the lithium battery contact with the left and right abutment protrusions to detect the internal resistance of the lithium battery, the support frame contacts the baffle. At the same time, the V-shaped design of the support frame and the use of the contact protection pad greatly improve the stability of the lithium battery during detection, thereby ensuring the accuracy of the detection value.

[0015] 2. The utility model provides a lithium battery testing instrument. The device is provided with two elastic metal conductive plates. At the same time, the detection movable plate can be adjusted in the left and right directions under the action of the adjusting screw rod, thereby ensuring that the instrument can adapt to the detection of lithium batteries of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the lithium battery limiting mechanism of the utility model;

[0018] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle part;

[0019] Figure 4 For the utility model Figure 2 A partial enlarged view of point B in the middle;

[0020] Figure 5 This is a three-dimensional structural diagram of the lithium battery limiting mechanism of the utility model from another angle;

[0021] Figure 6 For the utility model Figure 5 A partial enlarged view of point C in the middle;

[0022] Figure 7 It is a structural schematic diagram of the fixed suction cup of the utility model.

[0023] In the figure: 1. Testing instrument; 2. Testing data display screen; 3. Lithium battery limit mechanism; 4. Fixed base; 5. Adjustment slot; 6. Testing movable plate; 7. Limit slide bar 1; 8. Stabilizing spring; 9. Adjusting screw rod; 10. Elastic metal conductive plate; 11. Insulating plate; 12. Abutment spring; 13. Guide inclined plate; 14. Abutment protrusion; 15. Fixed suction cup; 16. Moving slide; 17. Support slider; 18. Support frame; 19. Contact protection pad; 20. Limit slide bar 2; 21. Reset spring; 22. Baffle; 23. Fixed plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Example:

[0026] See also Figure 1-Figure 7 The utility model provides a technical solution: a lithium battery testing instrument, comprising a testing instrument 1, a testing data display screen 2 is provided on the testing instrument 1, a lithium battery limiting mechanism 3 is provided outside the testing instrument 1, the lithium battery limiting mechanism 3 is used for connecting the lithium battery to be tested with the testing instrument 1, and the lithium battery and the testing instrument 1 are connected through the lithium battery limiting mechanism 3;

[0027] The lithium battery limiting mechanism 3 includes a fixed base 4, the upper end of the fixed base 4 is fixedly connected with a fixed plate 23, a detection movable plate 6 is arranged on the right side of the fixed plate 23, and elastic metal conductive plates 10 are fixedly connected to the adjacent side walls of the detection movable plate 6 and the fixed plate 23, and the elastic metal conductive plate 10 is electrically connected to the detection instrument 1, a movable slide 16 is provided at the upper end of the fixed base 4, a support slider 17 is slidably connected in the movable slide 16, and a support frame 18 is fixedly connected to the upper end of the support slider 17, and the support frame 18 is located between the fixed plate 23 and the movable plate, and a baffle 22 is arranged on the rear side of the support frame 18, and the baffle 22 is fixed to the upper end of the fixed base 4;

[0028] The rear ends of the adjacent side walls of the two elastic metal conductive plates 10 are fixedly connected with a guide inclined plate 13 and abutment protrusion 14, both of which are made of metal material. The arrangement of the guide inclined plate 13 and the abutment protrusion 14 ensures that the two elastic metal conductive plates 10 can be smoothly electrically connected to the lithium battery;

[0029] The rear ends of the two elastic metal conductive plates 10 away from the side walls are fixedly connected to the insulating plates 11, and the ends of the insulating plates 11 away from the elastic metal conductive plates 10 are fixedly connected to the abutment springs 12, and the ends of the two abutment springs 12 away from the insulating plates 11 are fixedly connected to the fixed plate 23 and the adjacent side walls of the detection movable plate 6 respectively;

[0030] An adjustment slot 5 is provided at the upper end of the fixed base 4, and the adjustment slot 5 is located on the right side of the support frame 18. The lower end of the detection movable plate 6 extends into the adjustment slot 5 and is slidably connected to the inner side of the adjustment slot 5. An adjustment screw rod 9 is provided on the right side of the fixed base 4. The left end of the adjustment screw rod 9 passes through the right side wall of the adjustment slot 5 and is rotatably connected to the right side wall of the detection movable plate 6. The adjustment screw rod 9 is threadedly connected to the right side wall of the adjustment slot 5. Rotating the adjustment screw rod 9 drives the detection movable plate 6 to move in the left and right directions, thereby adjusting the distance between the two elastic metal conductive plates 10 between the fixed plate 23 and the detection movable plate 6, so as to ensure that the device can meet the needs of lithium batteries of different sizes.

[0031] The left inner wall of the adjusting groove 5 is symmetrically fixedly connected with a limit slide bar 7 on both sides, and the right end of the limit slide bar 7 passes through the detection movable plate 6 and is fixedly connected to the right inner wall of the adjusting groove 5. The limit slide bar 7 is slidably connected to the detection movable plate 6. A stabilizing spring 8 is sleeved on the limit slide bar 7. The left end of the stabilizing spring 8 is fixedly connected to the right wall of the detection movable plate 6. The right end of the stabilizing spring 8 is fixedly connected to the right inner wall of the adjusting groove 5. Under the action of the stabilizing spring 8, the stability of the detection movable plate 6 is ensured;

[0032] The rear inner wall of the movable slide 16 is fixedly connected with a limiting slide bar 20, the front end of the limiting slide bar 20 passes through the supporting slider 17 and is fixedly connected to the front inner wall of the movable slide 16, the movable slide 16 is slidably connected to the supporting slider 17, a return spring 21 is sleeved on the limiting slide bar 20, the rear end of the return spring 21 is fixedly connected to the rear end of the movable slide 16, and the front end of the return spring 21 is fixedly connected to the rear end of the supporting slider 17. After the lithium battery test is completed, the support frame 18 returns to the initial position under the action of the return spring 21, which is more convenient for the subsequent placement of the lithium battery to be tested;

[0033] The support frame 18 is V-shaped, and a contact protection pad 19 is provided on the inner wall of the support frame 18. The contact protection pad 19 is made of rubber material, and an anti-slip groove is provided on the inner wall of the contact protection pad 19. The design of the contact protection pad 19 avoids damage to the outer packaging of the lithium battery during the detection process. A fixed suction cup 15 is provided at the lower end of the fixed base 4. The fixed suction cup 15 is used to fix the position of the lithium battery limiting mechanism 3, and there is no need to manually support the lithium battery limiting mechanism 3 during the detection process.

[0034] Working principle: When in use, connect the lithium battery limit mechanism 3 to the detection instrument 1, turn on the power of the detection instrument 1, turn on the detection instrument 1, rotate the adjusting screw rod 9 to drive the detection movable plate 6 to move in the left and right directions, and then adjust the distance between the two elastic metal conductive plates 10 between the fixed plate 23 and the detection movable plate 6 to ensure that the device can meet the needs of lithium batteries of different sizes. At the same time, the front and rear two stabilizing springs 8 are used to act on the detection movable plate 6 to ensure the stability of the detection movable plate 6 during use. When testing, place the lithium battery to be tested on the support frame 18, push the support frame 18 to move to the rear side, and as the lithium battery moves, the left and right ends of the lithium battery are in contact with the left When the abutment protrusions 14 on the right sides come into contact, the internal resistance of the lithium battery can be monitored through the detection instrument 1, and the device only needs to place the lithium battery in the support frame 18 with one hand and push it to the rear side, which is more convenient to use. When the left and right ends of the lithium battery come into contact with the two abutment protrusions 14 on the left and right sides to detect the internal resistance of the lithium battery, the support frame 18 is in contact with the baffle 22. At the same time, the V-shaped design of the support frame 18 and the use of the contact protection pad 19 greatly improve the stability of the lithium battery during detection, thereby ensuring the accuracy of the detection value. After the detection is completed, the lithium battery is directly removed, and the support frame 18 returns to the initial position under the action of the reset spring 21, which is more convenient for the subsequent placement of the lithium battery to be detected.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery testing instrument, comprising a testing instrument (1), characterized in that: The detection instrument (1) is provided with a detection data display screen (2), and the detection instrument (1) is provided with a lithium battery limiting mechanism (3) outside, and the lithium battery limiting mechanism (3) is used for connecting the lithium battery to be detected and the detection instrument (1); The lithium battery limiting mechanism (3) comprises a fixed base (4), the upper end of the fixed base (4) is fixedly connected to a fixed plate (23), a detection movable plate (6) is arranged on the right side of the fixed plate (23), and elastic metal conductive plates (10) are fixedly connected to adjacent side walls of the detection movable plate (6) and the fixed plate (23), and the elastic metal conductive plate (10) is electrically connected to the detection instrument (1), a movable slideway (16) is provided at the upper end of the fixed base (4), a support slider (17) is slidably connected in the movable slideway (16), and a support frame (18) is fixedly connected to the upper end of the support slider (17), and the support frame (18) is located between the fixed plate (23) and the movable plate, and a baffle (22) is arranged on the rear side of the support frame (18), and the baffle (22) is fixed to the upper end of the fixed base (4).

2. A lithium battery testing instrument according to claim 1, characterized in that: The rear ends of the adjacent side walls of the two elastic metal conductive plates (10) are fixedly connected with a guide inclined plate (13) and an abutment protrusion (14), and the guide inclined plate (13) and the abutment protrusion (14) are both made of metal material.

3. A lithium battery testing instrument according to claim 1, characterized in that: The rear ends of the two elastic metal conductive plates (10) away from the side wall are fixedly connected to an insulating plate (11), one end of the insulating plate (11) away from the elastic metal conductive plate (10) is fixedly connected to an abutment spring (12), and one end of the two abutment springs (12) away from the insulating plate (11) is fixedly connected to the fixed plate (23) and the adjacent side wall of the detection movable plate (6), respectively.

4. A lithium battery testing instrument according to claim 1, characterized in that: An adjustment groove (5) is provided at the upper end of the fixed base (4), and the adjustment groove (5) is located on the right side of the support frame (18). The lower end of the detection movable plate (6) extends into the adjustment groove (5) and is slidably connected to the inner side of the adjustment groove (5). An adjustment screw rod (9) is provided on the right side of the fixed base (4), and the left end of the adjustment screw rod (9) passes through the right side wall of the adjustment groove (5) and is rotatably connected to the right side wall of the detection movable plate (6). The adjustment screw rod (9) is threadedly connected to the right side wall of the adjustment groove (5).

5. A lithium battery testing instrument according to claim 4, characterized in that: A limiting slide bar (7) is symmetrically fixedly connected to the front and rear sides of the left inner wall of the adjusting groove (5); the right end of the limiting slide bar (7) passes through the detection movable plate (6) and is fixedly connected to the right inner wall of the adjusting groove (5); the limiting slide bar (7) is slidably connected to the detection movable plate (6); a stabilizing spring (8) is sleeved on the limiting slide bar (7); the left end of the stabilizing spring (8) is fixedly connected to the right wall of the detection movable plate (6); and the right end of the stabilizing spring (8) is fixedly connected to the right inner wall of the adjusting groove (5).

6. A lithium battery testing instrument according to claim 1, characterized in that: The rear inner wall of the movable slide (16) is fixedly connected to a second limiting slide bar (20); the front end of the second limiting slide bar (20) passes through the supporting slider (17) and is fixedly connected to the front inner wall of the movable slide (16); the movable slide (16) is slidably connected to the supporting slider (17); a return spring (21) is sleeved on the second limiting slide bar (20); the rear end of the return spring (21) is fixedly connected to the rear end of the movable slide (16); and the front end of the return spring (21) is fixedly connected to the rear end of the supporting slider (17).

7. A lithium battery testing instrument according to claim 1, characterized in that: The support frame (18) is V-shaped, and a contact protection pad (19) is provided on the inner side wall of the support frame (18). The contact protection pad (19) is made of rubber material, and an anti-slip groove is provided on the inner side wall of the contact protection pad (19). A fixed suction cup (15) is provided at the lower end of the fixed base (4).

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