A battery charge / discharge detection device

Abstract

This utility model discloses a battery charge / discharge testing device, including a testing instrument body, a power transmission line, and a clamp. The clamp is detachably connected to the testing instrument body via the power transmission line. The clamp includes a first clamp, a second clamp, a rotating mechanism, and a conductive rod. The middle portions of the first and second clamps are rotatably connected via the rotating mechanism. A self-locking sleeve is provided in the middle of the rotating mechanism. The conductive rod is movably connected to the self-locking sleeve. The power transmission line includes a first cable and a second cable. One end of the conductive rod is detachably electrically connected to the testing instrument body via the first cable, and one end of the first clamp is also detachably electrically connected to the testing instrument body via the second cable. By setting the first clamp, the second clamp, the rotating mechanism, and the conductive rod, this device can effectively adapt to electrodes of different specifications and structures, thereby making charge / discharge testing more convenient and reliable.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery charge and discharge testing device. Background Technology

[0002] Battery charge / discharge testing devices are core equipment for evaluating battery performance. They simulate the battery's operating state under different scenarios by precisely controlling parameters such as current and voltage during the charging and discharging process. Simultaneously, they collect key data such as voltage, current, temperature, and capacity in real time, thereby analyzing core indicators such as battery capacity characteristics, cycle life, charge / discharge efficiency, and safety. These devices typically consist of a control module, a data acquisition module, a load module, and a data analysis system. They can meet the testing needs of various battery types, including lithium-ion, lead-acid, and nickel-metal hydride batteries, and are widely used in battery research and development, production quality inspection, and energy storage system maintenance. In practical applications, the reliability of battery charge / discharge testing devices largely depends on a stable connection with the battery. Traditional devices generally use electrical clamps as connecting components, achieving circuit conduction by clamping the battery electrodes.

[0003] However, with the development of battery technology, the requirements for battery form factors in different application scenarios are becoming increasingly diversified, resulting in many battery types with special electrode structures. For example, the tabs of pouch batteries are thin sheets, the terminal structures of cylindrical batteries vary, and the electrode positions of irregularly shaped batteries are irregular. Traditional clamps struggle to reliably adapt to these special structures, either causing poor contact leading to data fluctuations or damaging the electrodes due to improper clamping force. If a special clamp is used to adapt to the special electrodes, the significant differences in electrodes between different battery sizes necessitate frequent disassembly and replacement of the clamp and wiring. This not only increases the complexity of operations and reduces testing efficiency but may also cause interface wear due to repeated plugging and unplugging, increasing the risk of device damage and affecting the stability and continuity of the testing work. For example, utility model patent CN218240342U discloses an intelligent battery cycle charge-discharge testing device, including a bracket. The upper surface of the bracket is fixedly mounted with the tester body. Wires are provided on both the positive and negative terminals of the tester body, and the wires pass through a take-up reel and connect to alligator clips. While this technical solution has the advantage of easy storage, the alligator clip has a simple structure, making it difficult to adapt to the charge-discharge testing of batteries of different specifications and structures, resulting in inconvenience in use. Therefore, in the field of battery testing technology, there is a need to propose a battery charge-discharge testing device that can improve ease of use and reduce the risk of damage. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a battery charge and discharge detection device, which mainly solves the technical problem of how to improve ease of use and reduce the risk of damage.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows: A battery charge / discharge testing device includes a testing instrument body, a power transmission line, and a clamp. The clamp is detachably connected to the testing instrument body via the power transmission line. The clamp includes a first clamp, a second clamp, a rotating mechanism, and a conductive rod. The middle portions of the first clamp and the second clamp are rotatably connected via the rotating mechanism. A self-locking sleeve is provided in the middle portion of the rotating mechanism. The conductive rod is movably connected to the self-locking sleeve. The power transmission line includes a first cable and a second cable. One end of the conductive rod is detachably electrically connected to the testing instrument body via the first cable. One end of the first clamp is also detachably electrically connected to the testing instrument body via the second cable.

[0006] Preferably, both the first and second electric clamps include an upper clamp, a lower clamp, a torsion spring, and a connecting block. The upper clamp and the lower clamp are rotatably connected to the connecting block via the torsion spring. The connecting block in the middle of the first electric clamp and the connecting block in the middle of the second electric clamp are rotatably connected via the outside of the self-locking sleeve.

[0007] Preferably, one side of the upper clamp and the lower clamp are provided with a toothed structure, and the side of the upper clamp and the lower clamp away from the toothed structure is provided with a pressing part.

[0008] Preferably, a conductive block is provided at one end of the conductive rod near the toothed structure, and the conductive block is fixedly connected to the conductive rod.

[0009] Preferably, the side of the connecting block that is not connected to the conductive rod is configured as a horizontal surface structure.

[0010] Preferably, the side of the connecting block that is not connected to the conductive rod is configured as an annular structure with a central depression.

[0011] Preferably, the self-locking sleeve has internal threads, and the middle part of the conductive rod is threadedly connected to the self-locking sleeve.

[0012] Preferably, a rotating sleeve is provided on one side of the conductive rod, and the rotating sleeve is fixedly connected to the conductive rod.

[0013] Preferably, the surface of the rotating sleeve is provided with anti-slip texture.

[0014] The beneficial effects of this utility model are as follows: This device, by setting up a detector body, a power transmission line, and a clamp, can clamp the electrodes of the battery under test through the clamp, and electrically connect the clamp to the detector body through the power transmission line, thereby enabling the detector to test the battery under test. The clamp in this device includes a first clamp, a second clamp, a rotating mechanism, and a conductive rod. When the first and second clamps are unfolded, they form an approximately cross-shaped structure, capable of directly clamping cylindrical or isomorphic electrodes, or clamping the outer surface of a three-dimensional battery, and moving the conductive rod to tightly fit the electrode, thereby enabling charge / discharge testing of the battery. When the first and second clamps are retracted, they form a narrow X-shaped structure, capable of clamping flat electrodes, thereby enabling charge / discharge testing of the battery.

[0015] In summary, by incorporating a first clamp, a second clamp, a rotating mechanism, and a conductive rod, this device can effectively adapt to electrodes of different specifications and structures, thereby enabling more convenient and reliable charge and discharge testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a battery charge / discharge detection device according to Embodiment 1 of this application; Figure 2 This is a schematic diagram of the fixture in its unfolded state in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the clamp in its retracted state in Embodiment 1 of this application; Figure 4 This is an exploded view of the fixture in Embodiment 1 of this application; Figure 5 This is a cross-sectional view of the conductive block in Embodiment 1 of this application; Figure 6 This is a cross-sectional view of the conductive block in Embodiment 2 of this application; Explanation of icon numbers: 1. Detector body; 2. Power transmission line; 3. Clamp; 201. First cable; 202. Second cable; 301. First electric clamp; 302. Second electric clamp; 303. Rotating mechanism; 304. Conductive rod; 305. Self-locking sleeve; 306. Upper clamp; 307. Lower clamp; 308. Torsion spring; 309. Connecting block; 310. Toothed structure; 311. Pressing part; 312. Conductive block; 313. Rotating sleeve; 314. Anti-slip texture; Detailed Implementation The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0017] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0018] Example 1 See attached document Figure 1-5 This application provides a battery charge and discharge testing device, including a testing instrument body 1, a power transmission line 2, and a clamp 3. The clamp 3 is detachably connected to the testing instrument body 1 via the power transmission line 2. The clamp 3 includes a first electric clamp 301, a second electric clamp 302, a rotating mechanism 303, and a conductive rod 304. The middle portions of the first electric clamp 301 and the second electric clamp 302 are rotatably connected via the rotating mechanism 303. A self-locking sleeve 305 is provided in the middle portion of the rotating mechanism 303. The conductive rod 304 is movably connected to the self-locking sleeve 305. The power transmission line 2 includes a first cable 201 and a second cable 202. One end of the conductive rod 304 is detachably electrically connected to the testing instrument body 1 via the first cable 201. One end of the first electric clamp 301 is also detachably electrically connected to the testing instrument body 1 via the second cable 202. This device, comprising a detector body 1, a power transmission line 2, and a clamp 3, allows the clamp 3 to hold the electrodes of the battery under test. The power transmission line 2 electrically connects the clamp 3 to the detector body 1, enabling the detector to perform testing on the battery. The clamp 3 includes a first clamp 301, a second clamp 302, a rotating mechanism 303, and a conductive rod 304. (See attached diagram.) Figure 2When the first clamp 301 and the second clamp 302 are unfolded, they form an approximately cross-shaped structure, which can directly clamp cylindrical or isomorphic electrodes (such as common lead-acid batteries, in which case the first clamp 301 is electrically connected to the detector body 1 via the second cable 202), or clamp the outer surface of a three-dimensional battery (such as a cylindrical lithium battery, in which case the conductive rod 304 is electrically connected to the detector body 1 via the first cable 201), and move the conductive rod 304 to fit tightly against the electrode, thereby performing charge and discharge testing on the battery; see attached figure. Figure 3 When the first clamp 301 and the second clamp 302 are closed, they form a narrow X-shaped structure, which can clamp flat electrodes (such as common energy storage soft-pack batteries, in which case the first clamp 301 is electrically connected to the detector body 1 via the second cable 202), thereby performing charge and discharge detection on the battery. In summary, by setting the first clamp 301, the second clamp 302, the rotating mechanism 303, and the conductive rod 304, this device can effectively adapt to electrodes of different specifications and structures, thereby making charge and discharge detection more convenient and reliable. In this embodiment, the first cable 201 and the second cable 202 are connected to the conductive post and the first clamp 301 by welding, and the first cable 201 and the second cable 202 are detachably electrically connected to the socket on the detector body 1 by plugging. It should be understood that this device can also be adapted to the detector body 1 with poles, with clamps 3 connected to both sides of the first cable 201 and the second cable 202, and detachably connected to the poles on the detector body 1 via the clamps 3.

[0019] Specifically, both the first electric clamp 301 and the second electric clamp 302 include an upper clamp 306, a lower clamp 307, a torsion spring 308, and a connecting block 309. The upper clamp 306 and the lower clamp 307 are rotatably connected to the connecting block 309 via the torsion spring 308. The connecting block 309 in the middle of the first electric clamp 301 and the connecting block 309 in the middle of the second electric clamp 302 are rotatably connected via the outer side of the self-locking sleeve 305. By setting the torsion spring 308 and the connecting block 309, this device can push the upper clamp 306 and the lower clamp 307 to clamp, and enable the first electric clamp 301 and the second electric clamp 302 to rotate relative to each other about the self-locking sleeve 305 as an axis.

[0020] Specifically, both the upper clamp 306 and the lower clamp 307 have a toothed structure 310 on one side, and a pressing part 311 is provided on the side of the upper clamp 306 and the lower clamp 307 away from the toothed structure 310. The pressing part 311 can reduce the slippage of the operator's fingers, making the clamping operation of the first electric clamp 301 and the second electric clamp 302 more convenient and reliable. At the same time, the pressing part 311 in this device can be easily covered with a common insulating rubber sleeve or plastic sleeve according to the needs of the site, so as to reduce safety hazards.

[0021] Specifically, a conductive block 312 is provided at one end of the conductive rod 304 near the toothed structure 310, and the conductive block 312 is fixedly connected to the conductive rod 304. Both the conductive block 312 and the conductive rod 304 are made of conductive metal, and the conductive block 312 can fit more tightly with the electrode, enhancing the connection effect.

[0022] Specifically, the side of the connecting block 309 that is not connected to the conductive rod 304 is configured as a horizontal surface. This horizontal configuration of the connecting block 309 allows for better contact with the electrodes.

[0023] Specifically, the self-locking sleeve 305 has internal threads, and the middle part of the conductive rod 304 is threadedly connected to the self-locking sleeve 305, so that the conductive rod 304 can move more reliably within the self-locking sleeve 305 and perform self-locking.

[0024] Specifically, a rotating sleeve 313 is provided on one side of the conductive rod 304, and the rotating sleeve 313 is fixedly connected to the conductive rod 304. The rotating sleeve 313 in this device allows the operator to more easily adjust the position of the conductive rod 304. The side of the conductive rod 304 near the rotating sleeve 313 can be easily fitted with a common insulating rubber sleeve or plastic sleeve according to on-site needs to reduce safety hazards.

[0025] Specifically, the surface of the rotating sleeve 313 is provided with anti-slip texture 314. This device, by providing anti-slip texture 314, can prevent the operator's fingers from sliding on the anti-slip texture 314.

[0026] Example 2 See attached document Figure 6 The difference between this embodiment and Embodiment 1 is that the side of the connecting block 309 not connected to the conductive rod 304 is configured as a concave annular structure. This concave annular structure allows for more reliable contact with partially uneven electrode surfaces.

[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A battery charge / discharge testing device, comprising a testing instrument body (1), a power transmission line (2), and a clamp (3), wherein the clamp (3) is detachably connected to the testing instrument body (1) via the power transmission line (2), characterized in that, The clamp (3) includes a first electric clamp (301), a second electric clamp (302), a rotating mechanism (303), and a conductive rod (304). The middle parts of the first electric clamp (301) and the second electric clamp (302) are rotatably connected through the rotating mechanism (303). A self-locking sleeve (305) is provided in the middle of the rotating mechanism (303). The conductive rod (304) is connected to the self-locking sleeve (305) in a way that allows it to move back and forth. The power transmission line (2) includes a first cable (201) and a second cable (202). One end of the conductive rod (304) is detachably electrically connected to the detector body (1) through the first cable (201). One end of the first electric clamp (301) is also detachably electrically connected to the detector body (1) through the second cable (202).

2. The battery charge and discharge detection device according to claim 1, wherein The first electric clamp (301) and the second electric clamp (302) each include an upper clamp (306), a lower clamp (307), a torsion spring (308), and a connecting block (309). The upper clamp (306) and the lower clamp (307) are rotatably connected to the connecting block (309) through the torsion spring (308). The connecting block (309) in the middle of the first electric clamp (301) and the connecting block (309) in the middle of the second electric clamp (302) are rotatably connected through the outside of the self-locking sleeve (305).

3. The battery charge and discharge detection device according to claim 2, wherein The upper clamp (306) and the lower clamp (307) are provided with a toothed structure (310) on one side, and a pressing part (311) is provided on the side of the upper clamp (306) and the lower clamp (307) away from the toothed structure (310).

4. The battery charge and discharge detection device according to claim 3, wherein A conductive block (312) is provided at one end of the conductive rod (304) near the toothed structure (310), and the conductive block (312) is fixedly connected to the conductive rod (304).

5. The battery charge and discharge detection device according to claim 4, wherein The side of the connecting block (309) that is not connected to the conductive rod (304) is configured as a horizontal surface structure.

6. The battery charge and discharge detection device according to claim 4, wherein The side of the connecting block (309) that is not connected to the conductive rod (304) is configured as an annular structure with a central depression.

7. The battery charge and discharge detection device according to claim 1, wherein The self-locking sleeve (305) has internal threads, and the middle part of the conductive rod (304) is threadedly connected to the self-locking sleeve (305).

8. The battery charge / discharge detection device according to claim 7, characterized in that, A rotating sleeve (313) is provided on one side of the conductive rod (304), and the rotating sleeve (313) is fixedly connected to the conductive rod (304).

9. The battery charge and discharge detection device according to claim 8, wherein The rotating sleeve (313) has anti-slip texture (314) on its surface.

Images