Battery cell internal resistance measurement and screening charge-discharge device

Abstract

The utility model discloses a kind of electric core internal resistance measurement screening charge-discharge device, it is related to electric core internal resistance measurement screening charge-discharge device technical field, including fixed seat and adjusting charge-discharge assembly, the fixed seat top one side is fixedly connected with adjusting charge-discharge assembly, the adjusting charge-discharge assembly includes the fixed box of fixed connection in the fixed seat top one side, the fixed box one side is fixedly connected with motor box, the inside fixed connection of motor box has servo motor, the output of servo motor is fixedly connected with transmission rod;The utility model is equipped with adjusting charge-discharge assembly, when personnel operating device is used, start servo motor to drive transmission rod and positive and negative screw rod rotation, make the charge-discharge plate of two sides move along positive and negative screw rod towards or away, to adjust the pitch of connector, adapt to different size electric core, ensure that connector and electric core are closely contacted, improve charge-discharge efficiency and the accuracy of internal resistance measurement.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cell internal resistance measurement and screening charging and discharging device, specifically a battery cell internal resistance measurement and screening charging and discharging device. Background Technology

[0002] Against the backdrop of the rapid development of the new energy industry, lithium batteries, as core energy storage devices, directly affect the performance and safety of battery packs due to the quality of their cells. Cell internal resistance is one of the key parameters for evaluating cell quality. Accurately measuring internal resistance and selecting high-performance cells is crucial for ensuring the stable application of lithium batteries in electric vehicles, energy storage power stations and other fields.

[0003] When using existing cell internal resistance measurement and screening charge-discharge devices,

[0004] (1) The position of the charging and discharging components is fixed, making it difficult to adapt to cells of different specifications and sizes, resulting in poor contact between the cells and the charging and discharging connectors, which affects the measurement accuracy;

[0005] (2) The device has poor stability and is prone to shaking during charging, discharging and measurement, which not only interferes with the accuracy of the data, but may also cause safety hazards.

[0006] To address the above problems, this utility model provides a battery cell internal resistance measurement and screening charging and discharging device. Utility Model Content

[0007] The purpose of this invention is to provide a battery cell internal resistance measurement and screening charging and discharging device. This invention adapts to different battery cells through an adjustable charging and discharging component and enhances the stability of the device by using a stable support component, thereby solving the problems of poor adaptability and insufficient stability of existing devices.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a battery cell internal resistance measurement and screening charging and discharging device, comprising a fixed base and an adjustable charging and discharging assembly, wherein the adjustable charging and discharging assembly is fixedly connected to one side of the top of the fixed base, and the adjustable charging and discharging assembly includes a fixed box fixedly connected to one side of the top of the fixed base;

[0009] A motor box is fixedly connected to one side of the fixed box. A servo motor is fixedly connected inside the motor box. A transmission rod is fixedly connected to the output end of the servo motor. A positive and negative threaded rod is fixedly connected to one side of the transmission rod. A charging and discharging plate is fixedly connected to both sides of the surface of the positive and negative threaded rod. A connector is fixedly connected to the surface of the charging and discharging plate.

[0010] Furthermore, one side of the positive and negative threaded rod is rotatably connected to the inner wall of the fixed box, and a protective box is fixedly connected to the middle of the top of the fixed box. The battery is fixedly connected inside the protective box, which achieves the function of providing a stable power supply for the charging and discharging process of the device. At the same time, the protective box can prevent the battery from being affected by external collisions, dust and liquids, ensuring its normal operation and service life.

[0011] Furthermore, a connecting plate is fixedly connected to the center of the front of the protective box, and transmission lines are fixedly connected to both sides of the front of the connecting plate. One end of the transmission line is fixedly connected to the surface of the charging and discharging plate, which achieves the function of stably transmitting the battery's electrical energy to the charging and discharging plate through the transmission line, ensuring that the charging and discharging plate can normally charge and discharge the battery cells.

[0012] Furthermore, a control line is fixedly connected to one side of the protection box, and a connector is fixedly connected to one end of the control line, thereby connecting the display controller body to the circuit system inside the protection box, enabling personnel to control and adjust the charging and discharging parameters and measurement process of the device through the display controller body.

[0013] Furthermore, the bottom end of the connector is fixedly connected to the other side of the top end of the fixed base, and the top end of the connector is fixedly connected to the display controller body, which enables personnel to conveniently view information such as the charging and discharging status of the battery cell and internal resistance measurement data in real time, and to set parameters and control the device, thereby improving the ease of use and interactivity of the device.

[0014] Furthermore, both ends of the fixed base are fixedly connected to a stabilizing support assembly. The stabilizing support assembly includes a fixed plate fixedly connected to both ends of the fixed base. The fixed plate has a protective column fixedly connected inside, which provides an installation foundation and protection for the hydraulic rod body, ensures the stability of the stabilizing support assembly structure, and maintains reliability when adjusting the height or supporting the device.

[0015] Furthermore, a hydraulic rod body is fixedly connected inside the protective column, and an anti-slip circular plate is fixedly connected to the bottom end of the hydraulic rod body. This allows the support height of the device to be adjusted by the hydraulic rod body, adapting to different usage scenarios and ground conditions. The anti-slip circular plate increases the friction with the ground, preventing the device from shifting or shaking during operation and enhancing the overall stability of the device.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model provides a battery cell internal resistance measurement and screening charging / discharging device.

[0018] (1) By adjusting the settings of the charging and discharging components, when the personnel operate the device, the servo motor is started to drive the transmission rod and the positive and negative thread rod to rotate, so that the charging and discharging plates on both sides move towards or away from each other along the positive and negative thread rod, thereby adjusting the spacing of the connectors to adapt to different sizes of battery cells, ensuring that the connectors are in close contact with the battery cells, and improving the charging and discharging efficiency and the accuracy of internal resistance measurement.

[0019] (2) By setting up a stable support component, when the personnel operate the device, the height of the anti-slip circular plate can be adjusted by the hydraulic rod body according to the ground conditions or operation requirements, so that the device can remain horizontal and stable; the anti-slip circular plate increases the contact area and friction with the ground, effectively reducing the vibration of the device during charging, discharging and measurement, and ensuring the stability and reliability of data measurement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the adjustable charging and discharging component of this utility model;

[0022] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0023] Figure 4 This is a schematic diagram of the stable support component structure of this utility model;

[0024] Figure 5 This is a front view schematic diagram of the present utility model.

[0025] In the diagram: 1. Fixed base; 2. Adjustable charging and discharging assembly; 201. Fixed box; 202. Motor box; 203. Servo motor; 204. Transmission rod; 205. Positive and negative threaded rod; 206. Charging and discharging plate; 207. Connector; 208. Protection box; 209. Battery; 210. Connecting plate; 211. Transmission line; 212. Control line; 213. Connecting base; 214. Display controller body; 3. Stable support assembly; 301. Fixed plate; 302. Protective column; 303. Hydraulic rod body; 304. Anti-slip circular plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To solve the problem of how to effectively position and adjust the technology, such as Figure 1-5 As shown, the following preferred technical solutions are provided:

[0028] A battery cell internal resistance measurement and screening charging and discharging device includes a fixed base 1 and an adjustable charging and discharging assembly 2. The adjustable charging and discharging assembly 2 is fixedly connected to one side of the top of the fixed base 1. By adjusting the settings of the charging and discharging assembly 2, when the device is used by the operator, the servo motor 203 is started to drive the transmission rod 204 and the positive and negative threaded rod 205 to rotate, so that the charging and discharging plates 206 on both sides move towards or away from each other along the positive and negative threaded rod 205, thereby adjusting the spacing of the connector 207 to adapt to battery cells of different sizes, ensuring that the connector 207 is in close contact with the battery cell, improving the charging and discharging efficiency and the accuracy of internal resistance measurement. The adjustable charging and discharging assembly 2 includes a fixed box 201 fixedly connected to one side of the top of the fixed base 1.

[0029] A motor box 202 is fixedly connected to one side of the fixed box 201. A servo motor 203 is fixedly connected inside the motor box 202. A transmission rod 204 is fixedly connected to the output end of the servo motor 203. A positive and negative threaded rod 205 is fixedly connected to one side of the transmission rod 204. A charging and discharging plate 206 is fixedly connected to both sides of the surface of the positive and negative threaded rod 205. A connector 207 is fixedly connected to the surface of the charging and discharging plate 206.

[0030] Specifically, when using the operating device, the operator places the battery cell between two charging / discharging plates 206, starts the servo motor 203, and drives the transmission rod 204 to rotate, which in turn causes the positive and negative threaded rods 205 to rotate. The charging / discharging plates 206 on both sides move towards each other along the positive and negative threaded rods 205 until the connector 207 makes close contact with the electrode of the battery cell, thus completing the fixing of the battery cell and the circuit connection. Then, charging / discharging and internal resistance measurement operations can be performed.

[0031] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0032] One side of the positive and negative threaded rod 205 is rotatably connected to the inner wall of the fixed box 201. A protective box 208 is fixedly connected to the middle of the top of the fixed box 201. A storage battery 209 is fixedly connected inside the protective box 208. The purpose of this design is to provide an independent power supply for the charging and discharging process of the device, so that the device can work in the absence of an external power supply. At the same time, the protective box 208 can protect the storage battery 209 from external impacts, dust and liquid intrusion, extend the service life of the storage battery 209, and ensure the stability of the device's power supply.

[0033] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0034] A connecting plate 210 is fixedly connected to the center of the front of the protective box 208. Transmission lines 211 are fixedly connected to both sides of the front of the connecting plate 210. One end of the transmission line 211 is fixedly connected to the surface of the charging and discharging board 206. The purpose of this design is to stably transmit the electrical energy of the battery 209 to the charging and discharging board 206 through the transmission line 211, so as to ensure that the charging and discharging board 206 can perform normal charging and discharging operations on the battery cell. At the same time, the connecting plate 210 can organize the circuit and prevent the transmission line 211 from being messy and affecting the operation of the device.

[0035] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0036] A control line 212 is fixedly connected to one side of the protection box 208, and a connector 213 is fixedly connected to one end of the control line 212. The purpose of this design is to establish a connection between the internal circuit of the protection box 208 and the display controller body 214, so that personnel can control the power supply status of the battery 209 and adjust the charging and discharging parameters through the display controller body 214, thereby realizing intelligent operation and management of the device.

[0037] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0038] The bottom end of the connector 213 is fixedly connected to the other side of the top of the fixed base 1, and the top of the connector 213 is fixedly connected to the display controller body 214. The purpose of this design is to securely install the display controller body 214 on the fixed base 1, so that personnel can view the charging and discharging status of the battery cell, internal resistance measurement data and other information in real time; at the same time, it is convenient for operators to perform parameter settings, start / stop and other operations on the device through the display controller body 214, thereby improving the convenience of human-machine interaction.

[0039] Furthermore, such as Figure 4 As shown, the following preferred technical solutions are provided:

[0040] Both ends of the fixed base 1 are fixedly connected to a stable support assembly 3. The stable support assembly 3 includes a fixed plate 301 fixedly connected to both ends of the fixed base 1. A protective column 302 is fixedly connected inside the fixed plate 301. The purpose of this design is to provide a stable installation base and protective structure for the hydraulic rod body 303. The fixed connection between the fixed plate 301 and the fixed base 1 enhances the overall connection strength. The protective column 302 can prevent the hydraulic rod body 303 from being damaged by external impact, ensuring the reliability of the stable support assembly 3.

[0041] Furthermore, such as Figure 4 As shown, the following preferred technical solutions are provided:

[0042] The protective column 302 is internally fixedly connected to a hydraulic rod body 303, and the bottom end of the hydraulic rod body 303 is fixedly connected to an anti-slip circular plate 304. The purpose of this design is to allow the support height of the device to be flexibly adjusted through the hydraulic rod body 303 to adapt to ground or work surface with different flatness. The anti-slip circular plate 304 increases the contact area and friction with the ground, preventing the device from shifting due to vibration during charging and discharging, and effectively improving the stability and safety of the device.

[0043] Working principle: In use, first place the device in a suitable position, adjust the height of the anti-slip circular plate 304 through the hydraulic rod body 303 to ensure the device is stable, place the battery cell between the two charging and discharging plates 206, start the servo motor 203, and use the positive and negative threaded rods 205 to drive the charging and discharging plates 206 to move, so that the connector 207 is tightly connected to the battery cell electrode. Set the charging and discharging parameters and measurement mode through the display controller body 214. The battery 209 supplies power to the charging and discharging plates 206 through the transmission line 211 to charge and discharge the battery cell. During the charging and discharging process, the display controller body 214 monitors the voltage, current and other data of the battery cell in real time, and calculates the internal resistance to complete the performance evaluation and screening of the battery cell. After the measurement is completed, start the servo motor 203 again to separate the charging and discharging plates 206 and take out the battery cell.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cell internal resistance measurement and screening charging and discharging device, comprising a fixed base (1) and an adjusting charging and discharging assembly (2), characterized in that: An adjustable charging and discharging assembly (2) is fixedly connected to one side of the top of the fixed base (1). The adjustable charging and discharging assembly (2) includes a fixed box (201) fixedly connected to one side of the top of the fixed base (1). A motor box (202) is fixedly connected to one side of the fixed box (201). A servo motor (203) is fixedly connected inside the motor box (202). A transmission rod (204) is fixedly connected to the output end of the servo motor (203). A positive and negative threaded rod (205) is fixedly connected to one side of the transmission rod (204). A charging and discharging plate (206) is fixedly connected to both sides of the surface of the positive and negative threaded rod (205). A connector (207) is fixedly connected to the surface of the charging and discharging plate (206).

2. The cell internal resistance measurement and screening charging / discharging device according to claim 1, characterized in that: One side of the positive and negative threaded rod (205) is rotatably connected to the inner wall of the fixed box (201). A protective box (208) is fixedly connected to the middle of the top of the fixed box (201). A storage battery (209) is fixedly connected inside the protective box (208).

3. The device according to claim 2, wherein the device is characterized by: A connecting plate (210) is fixedly connected to the center of the front of the protective box (208). Transmission lines (211) are fixedly connected to both sides of the front of the connecting plate (210). One end of the transmission line (211) is fixedly connected to the surface of the charging and discharging plate (206).

4. The device of claim 2, wherein the device is characterized by: A control line (212) is fixedly connected to one side of the protective box (208), and a connector (213) is fixedly connected to one end of the control line (212).

5. The device of claim 4, wherein: The bottom end of the connector (213) is fixedly connected to the other side of the top end of the fixed base (1), and the top end of the connector (213) is fixedly connected to the display controller body (214).

6. The device of claim 1, wherein the device is characterized by: Both ends of the fixed base (1) are fixedly connected to a stable support assembly (3). The stable support assembly (3) includes a fixed plate (301) fixedly connected to both ends of the fixed base (1). A protective column (302) is fixedly connected inside the fixed plate (301).

7. The device of claim 6, wherein the device is characterized by: The protective column (302) is internally fixedly connected to a hydraulic rod body (303), and the bottom end of the hydraulic rod body (303) is fixedly connected to an anti-slip circular plate (304).

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