Portable lithium battery internal resistance and voltage integrated test pen

Abstract

The utility model relates to the technical field of lithium battery internal resistance testing, in particular to a portable lithium battery internal resistance and voltage integrated testing pen which comprises a testing machine body, a positive and negative electrode power line is connected to the testing machine body in an inserted mode, and a testing pen is fixedly connected to one side of the outer surface of the positive and negative electrode power line. The portable lithium battery internal resistance and voltage integrated test pen is a device used for detecting the energy of a lithium battery, the storage device is arranged, the problem that the integrated test pen has no place to store after being used is solved, and the portable lithium battery internal resistance and voltage integrated test pen can be used for testing the energy of the lithium battery through the winding rod perfectly matched with the positive and negative power lines. The positive and negative electrode power lines are neatly contracted, the test pen is prevented from being damaged through the pen clamping structure specially used for placing the test pen, and the positive and negative electrode power lines cannot be separated from the test machine body and loosened due to frequent pulling when the lithium battery performance is detected through the clamping device.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery internal resistance testing, in particular to a portable integrated testing pen for lithium battery internal resistance and voltage. Background Technique

[0002] With the wide application of lithium batteries in various fields, their advantages such as high energy, long service life, high rated voltage and very low self-discharge rate make the performance detection of lithium batteries particularly important. During the use of lithium batteries, battery internal resistance and voltage are important indicators reflecting their health status. A battery internal resistance tester is an instrument used to measure the internal impedance of a battery and the degree of damage to the battery acidification film. Its working principle is to apply a 1 kHz AC signal to the object to be measured and obtain its internal resistance by measuring its AC voltage drop. However, the traditional battery internal resistance tester has the problem that it is not convenient to place the main body and observe data during use. It is necessary to hold the tester in hand and record while testing, which is rather troublesome. Therefore, to solve this problem, researchers have begun to develop a portable integrated testing pen for lithium battery internal resistance and voltage to more conveniently and quickly detect the performance of lithium batteries.

[0003] The existing integrated voltage testing pen needs to be connected to relatively long positive and negative power supply lines. It is very inconvenient to store after use and can only be placed randomly. This not only makes it easy to lose or not find the integrated voltage testing pen when it is needed, but also damages the testing pen and the positive and negative power supply lines, making them unable to continue to be used, shortening the service life, causing property losses and increasing the use cost. Moreover, during use, the connection between the positive and negative power supply lines and the testing body is prone to frequent pulling during the testing of lithium battery internal resistance and voltage, resulting in loosening and disconnection, thus affecting the testing process and results. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a portable integrated testing pen for lithium battery internal resistance and voltage to solve the problems raised in the related technology. The existing integrated voltage testing pen needs to be connected to relatively long positive and negative power supply lines. It is very inconvenient to store after use and can only be placed randomly. This not only makes it easy to lose or not find the integrated voltage testing pen when it is needed, but also damages the testing pen and the positive and negative power supply lines, making them unable to continue to be used, shortening the service life, causing property losses and increasing the use cost. Moreover, during use, the connection between the positive and negative power supply lines and the testing body is prone to frequent pulling during the testing of lithium battery internal resistance and voltage, resulting in loosening and disconnection, thus affecting the testing process and results.

[0005] To achieve the above object, according to one aspect of the present utility model, a portable integrated test pen for the internal resistance and voltage of a lithium battery is provided, which includes a test body. A positive and negative power cord is inserted and connected to the test body. A test pen is fixedly connected to one side of the outer surface of the positive and negative power cord. A test head is fixedly connected to the outer surface of the test pen. A storage device is arranged on one side of the outer surface of the test body. A clamping device is arranged on one side of the outer surface of the test body. The storage device includes a rectangular box which is fixedly connected to one side of the outer surface of the test body. A wire winding structure, a pen clamping structure and a shielding structure are arranged on the inner wall of the rectangular box. The wire winding structure is used to neatly store the positive and negative power cords. The pen clamping structure is fixedly connected to one side of the inner wall of the rectangular box and is used to place the test pen. The shielding structure is used to cover the opening of the rectangular box to protect the positive and negative power cords from damage.

[0006] Further, the wire winding structure includes a wire winding rod rotatably arranged on the inner wall of the rectangular box. The wire winding rod is rectangular. A rotating handle is fixedly connected to one side of the outer surface of the wire winding rod. A circular groove is opened on one side of the outer surface of the wire winding rod. A first spring is fixedly connected to the bottom of the inner wall of the circular groove. A clamping block is fixedly connected to one side of the outer surface of the first spring.

[0007] Further, the pen clamping structure includes a connecting block fixed to one side of the inner wall of the rectangular box. Two springs are fixedly connected to both sides of the outer surface of the connecting block. An L-shaped block is fixedly connected to one side of the outer surface of the spring. A limiting rod is fixedly connected to one side of the outer surface of the L-shaped block. The limiting rod slides in the inner wall of the connecting block. Anti-slip pads are fixedly connected to both sides of the outer surface of the connecting block. Anti-slip pads are fixedly connected to one side of the outer surface of the L-shaped block.

[0008] Further, the shielding structure includes an L-shaped cover slidably arranged on the inner wall of the rectangular box. A rectangular opening is opened on the outer surface of the L-shaped cover. The opening size of the rectangular opening is larger than that of the rotating handle.

[0009] Further, the clamping device includes a rectangular frame fixedly connected to one side of the outer surface of the test body. A bidirectional threaded rod is rotatably connected to the inner wall of the rectangular frame. An L-shaped rod is threadedly connected to the outer surface of the bidirectional threaded rod.

[0010] Further, a semi-circular opening is opened on the outer surface of the L-shaped rod. A turntable is fixedly connected to one side of the outer surface of the bidirectional threaded rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the portable lithium battery internal resistance and voltage integrated test pen is a device used to detect the energy of lithium batteries. By setting a storage device, the problem of having nowhere to store the integrated test pen after use is solved. The positive and negative power lines are neatly retracted through the winding rod that perfectly fits the positive and negative power lines. The pen clamping structure that specially places the test pen can prevent the test pen from being damaged. By setting a clamping device, the positive and negative power lines will not be detached from the test body or loosened due to frequent pulling when performing lithium battery performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the positive and negative power lines of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the storage device of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the clamping device of the utility model.

[0016] Illustrations: 1. Test body; 2. Positive and negative power cords; 3. Test pen; 4. Test head; 5. Storage device; 6. Clamping device; 51. Rectangular box; 52. Winding rod; 53. Turning handle; 54. Round groove; 55. Spring 1; 56. Block; 57. Connecting block; 58. Spring 2; 59. L-shaped block; 510. Limit rod; 511. Anti-skid pad 1; 512. Anti-skid pad 2; 513. L-shaped cover; 514. Rectangular mouth; 61. Rectangular frame; 62. Bidirectional threaded rod; 63. L-shaped rod; 64. Semicircular mouth; 65. Turntable. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation method, structure, characteristics and effects of the utility model are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0018] See also Figures 1-4 As shown, the purpose of this embodiment is to provide a portable lithium battery internal resistance and voltage integrated test pen, including a test body 1, a positive and negative power line 2 is inserted and connected to the test body 1, a test pen 3 is fixedly connected to one side of the outer surface of the positive and negative power line 2, a test head 4 is fixedly connected to the outer surface of the test pen 3, a storage device 5 is provided on one side of the outer surface of the test body 1, and a clamping device 6 is provided on one side of the outer surface of the test body 1;

[0019] The storage device 5 includes a rectangular box 51, which is fixedly connected to one side of the outer surface of the test body 1. The inner wall of the rectangular box 51 is provided with a wire winding structure, a pen clamping structure and a shielding structure. The wire winding structure is used to neatly store the positive and negative power supply lines 2. The pen clamping structure is fixedly connected to one side of the inner wall of the rectangular box 51 and is used to place the test pen 3. The shielding structure is used to cover the opening of the rectangular box 51 to protect the positive and negative power supply lines 2 from damage. By setting the rectangular box 51, it is used to store the positive and negative power supply lines 2 to avoid the positive and negative power supply lines 2 being exposed outside and being eroded;

[0020] The wire winding structure includes a wire winding rod 52 rotatably arranged on the inner wall of the rectangular box 51. The wire winding rod 52 is rectangular. One side of the outer surface of the wire winding rod 52 is fixedly connected with a rotating handle 53. A circular groove 54 is opened on one side of the outer surface of the wire winding rod 52. The bottom of the inner wall of the circular groove 54 is fixedly connected with a first spring 55. One side of the outer surface of the first spring 55 is fixedly connected with a clamping block 56. By setting the first spring 55 and the clamping block 56, when the connection head of the positive and negative power supply line 2 is placed between the clamping block 56 and the wire winding rod 52, release the clamping block 56, and the clamping block 56 is pulled back by the pulling force of the first spring 55, thereby clamping the connection head of the positive and negative power supply line 2 to facilitate winding it up;

[0021] The pen clamping structure includes a connection block 57 fixed to one side of the inner wall of the rectangular box 51. Two sides of the outer surface of the connection block 57 are fixedly connected with second springs 58. One side of the outer surface of the second springs 58 is fixedly connected with an L-shaped block 59. One side of the outer surface of the L-shaped block 59 is fixedly connected with a limiting rod 510. The limiting rod 510 slides on the inner wall of the connection block 57. Two sides of the outer surface of the connection block 57 are fixedly connected with anti-slip pads 511. One side of the outer surface of the L-shaped block 59 is fixedly connected with anti-slip pads 512. By setting the anti-slip pads 511 and the anti-slip pads 512, when the two test pens 3 are placed between the L-shaped block 59 and the connection block 57, release the L-shaped block 59 to make the anti-slip pads 511 and the anti-slip pads 512 closely adhere to the test pen, and fix the test pen on the side wall of the rectangular box 51;

[0022] The shielding structure includes an L-shaped cover 513 slidably arranged on the inner wall of the rectangular box 51. A rectangular opening 514 is opened on the outer surface of the L-shaped cover 513. The opening size of the rectangular opening 514 is larger than that of the rotating handle 53. By setting the L-shaped cover 513, it is used to cover the opening of the rectangular box 51 to shield the positive and negative power supply lines 2 and the test pen 3 in the rectangular box 51 to avoid their contact with air and being eroded;

[0023] The clamping device 6 includes a rectangular frame 61, which is fixedly connected to one side of the outer surface of the test body 1. A bidirectional threaded rod 62 is rotatably connected to the inner wall of the rectangular frame 61. An L-shaped rod 63 is threadedly connected to the outer surface of the bidirectional threaded rod 62. By setting the bidirectional threaded rod 62, it is used to drive the two L-shaped rods 63 to approach or move away from each other to achieve the effect of clamping and fixing;

[0024] A semi-circular opening 64 is provided on the outer surface of the L-shaped rod 63. One side of the outer surface of the bidirectional threaded rod 62 is fixedly connected with a turntable 65. By providing the semi-circular opening 64, the upper part of the connector of the positive and negative power supply lines 2 is clamped when used in combination on both sides, so that the positive and negative power supply lines 2 will not fall off or become loose from the test body 1.

[0025] When the present utility model is specifically used, the positive and negative power supply lines 2 are connected to the test body 1, and then the turntable 65 is used to rotate the bidirectional threaded rod 62 to drive the two L-shaped rods 63 to approach face to face until the semi-circular openings 64 on the two L-shaped rods 63 are close to and adhere to the positive and negative power supply lines 2, clamping the positive and negative power supply lines 2. Then, the test body 1 is started, the test pen 3 is picked up, and the test head 4 on the test pen 3 is inserted into the lithium battery for testing. After use, the test body 1 is turned off by the reverse steps described above, the positive and negative power supply lines 2 are removed, and the connector on the positive and negative power supply lines 2 is placed between the clamping block 56 and the winding rod 52. Then, the clamping block 56 is loosened, and the clamping block 56 is pulled forward by the reset effect of the first spring 55 to clamp the connector of the positive and negative power supply lines 2. Then, one hand holds the test pen 3, and the other hand holds the rotating handle 53 to rotate the winding rod 52. At this time, the insulating sleeve of the positive and negative power supply lines 2 fits above or below the winding rod 52. After the positive and negative power supply lines 2 are collected, the two test pens 3 are placed between the L-shaped block 59 and the connecting block 57, and then the L-shaped block 59 is loosened, so that the L-shaped block 59 cooperates with the connecting block 57 to clamp the test pen 3. Finally, the L-shaped cover 513 is slid downward along the upper part of the rectangular box 51 until it covers the opening of the rectangular box 51. At this time, the rotating handle 53 will pass through the rectangular opening 514.

[0026] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, describe in detail the specific implementation manners, structures, features and their effects according to the present utility model as follows.

[0027] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A portable lithium battery internal resistance and voltage integrated test pen, comprising a test body (1), characterized in that: The test body (1) is plugged with positive and negative power lines (2), one side of the outer surface of the positive and negative power lines (2) is fixedly connected to a test pen (3), the outer surface of the test pen (3) is fixedly connected to a test head (4), a storage device (5) is provided on one side of the outer surface of the test body (1), a clamping device (6) is provided on one side of the outer surface of the test body (1), the storage device (5) comprises a rectangular box (51), the rectangular box (51) is fixedly connected to one side of the outer surface of the test body (1), and the inner wall of the rectangular box (51) is provided with a winding structure, a pen clamping structure and a shielding structure.

2. The portable lithium battery internal resistance and voltage integrated test pen according to claim 1, characterized in that: The winding structure comprises a winding rod (52) rotatably arranged on the inner wall of a rectangular box (51), the winding rod (52) being rectangular in shape, a rotating handle (53) being fixedly connected to one side of the outer surface of the winding rod (52), a circular groove (54) being provided on one side of the outer surface of the winding rod (52), a spring 1 (55) being fixedly connected to the bottom of the inner wall of the circular groove (54), and a clamping block (56) being fixedly connected to one side of the outer surface of the spring 1 (55).

3. The portable lithium battery internal resistance and voltage integrated test pen according to claim 2, characterized in that: The pen-clamping structure comprises a connecting block (57) fixed to one side of the inner wall of the rectangular box (51); two sides of the outer surface of the connecting block (57) are fixedly connected to a second spring (58); one side of the outer surface of the second spring (58) is fixedly connected to an L-shaped block (59); one side of the outer surface of the L-shaped block (59) is fixedly connected to a limiting rod (510); the limiting rod (510) slides on the inner wall of the connecting block (57); two sides of the outer surface of the connecting block (57) are fixedly connected to a first anti-skid pad (511); and one side of the outer surface of the L-shaped block (59) is fixedly connected to a second anti-skid pad (512).

4. The portable lithium battery internal resistance and voltage integrated test pen according to claim 3, characterized in that: The shielding structure comprises an L-shaped cover (513) slidably arranged on the inner wall of the rectangular box (51), and the outer surface of the L-shaped cover (513) is provided with a rectangular opening (514), and the opening size of the rectangular opening (514) is larger than the rotating handle (53).

5. The portable lithium battery internal resistance and voltage integrated test pen according to claim 1, characterized in that: The clamping device (6) comprises a rectangular frame (61), the rectangular frame (61) being fixedly connected to one side of the outer surface of the test body (1), the inner wall of the rectangular frame (61) being rotatably connected to a bidirectional threaded rod (62), and the outer surface of the bidirectional threaded rod (62) being threadedly connected to an L-shaped rod (63).

6. The portable lithium battery internal resistance and voltage integrated test pen according to claim 5, characterized in that: The outer surface of the L-shaped rod (63) is provided with a semicircular opening (64), and a rotating disk (65) is fixedly connected to one side of the outer surface of the bidirectional threaded rod (62).

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