Lithium ion battery overcharge testing device with temperature measuring and displaying functions

Abstract

The utility model provides a lithium ion battery overcharge testing device with temperature measurement and display, which comprises a testing box body and a battery holder, an overcharge testing connector, a temperature testing connector and a display screen are arranged on the testing box body, a control unit is arranged in the testing box body, the battery holder comprises a base, a first fixing plate and a second fixing plate, and the base is provided with a temperature sensor. The first fixing plate and the second fixing plate are both fixedly connected with the base, the inward side of the first fixing plate is fixedly connected with a positive electrode wiring board, the inward side of the second fixing plate is provided with a negative electrode wiring board, the positive electrode wiring board and the negative electrode wiring board are both connected with an overcharge test connector through wires, and a temperature sensor is arranged in the middle of the base. The temperature sensor is connected with the temperature testing connector through a wire. According to the utility model, the temperature can be accurately measured and displayed in real time, and the problem that a testing device in the prior art cannot accurately obtain temperature data in time is effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium-ion battery testing equipment, and in particular to a lithium-ion battery overcharge testing device with temperature measurement and display. Background Technology

[0002] Lithium-ion batteries are widely used in many fields due to their high energy density and long cycle life. However, overcharging is a serious problem that affects the safety and lifespan of lithium-ion batteries. When a lithium-ion battery is overcharged, a series of complex chemical reactions occur inside the battery, which may lead to overheating, swelling, or even fire and explosion.

[0003] To ensure the safe use of lithium-ion batteries, testing their overcharge performance is crucial. Existing lithium-ion battery overcharge testing devices do not inherently possess temperature testing capabilities. Obtaining temperature data during overcharge requires an additional, separate temperature testing device, increasing testing costs and operational complexity. Furthermore, a common method for measuring battery temperature involves attaching thermocouple wires (in wire or rod form) to the battery's outer surface using tape to collect temperature data. While simple, this method has several drawbacks: firstly, the temperature distribution on the battery's outer surface may not be uniform during overcharge testing, making it difficult to reflect the overall true temperature of the battery through single-point measurement; secondly, the tape application process is cumbersome and extremely inefficient for batch testing. Moreover, existing testing devices struggle to quickly adapt to and conduct tests on lithium-ion batteries of varying sizes and specifications. Therefore, developing an overcharge testing device capable of real-time temperature measurement and display, with a flexible structure adaptable to various battery sizes, is of significant practical importance. Utility Model Content

[0004] The purpose of this invention is to provide a lithium-ion battery overcharge testing device with temperature measurement and display, which can measure and display temperature in real time and accurately, effectively solving the problem that existing testing devices cannot obtain temperature data in a timely and accurate manner, while also improving the problem of poor device structure flexibility, and providing a more reliable and efficient solution for lithium-ion battery overcharge testing.

[0005] To achieve the above objectives, this utility model provides a lithium-ion battery overcharge testing device with temperature measurement and display, including a test box and a battery holder. The test box is equipped with an overcharge test connector, a temperature test connector, and a display screen. A control unit is located inside the test box. The overcharge test connector, the temperature test connector, and the display screen are all electrically connected to the control unit. The battery holder includes a base, a first fixing plate, and a second fixing plate. Both the first fixing plate and the second fixing plate are fixedly connected to the base. A positive terminal board is fixedly connected to the inward side of the first fixing plate, and a negative terminal board is located on the inward side of the second fixing plate. Both the positive and negative terminal boards are connected to the overcharge test connector via wires. A temperature sensor is located in the middle of the base and is connected to the temperature test connector via wires.

[0006] Preferably, the control unit includes a central processing module, a temperature measurement module, an overcharge measurement module, and a display module. The temperature measurement module is electrically connected to a temperature test connector, the overcharge measurement module is electrically connected to an overcharge test connector, the temperature measurement module and the overcharge measurement module are connected to the central processing module via signals, the central processing module is connected to the display module via signals, and the display module is electrically connected to a display.

[0007] Preferably, the base includes a support part one and a support part two, the support part one and the support part two are slidably connected, the support part one is fixedly connected to the bottom of the fixed plate one, and the support part two is fixedly connected to the bottom of the fixed plate two.

[0008] Preferably, the second support part has a cavity in the middle, and the side of the first support part away from the first fixed plate is slidably connected to the cavity. A spring is provided in the cavity on the side near the second fixed plate. One end of the spring is fixedly connected to the inner wall of the cavity, and the other end of the spring is fixedly connected to the first support part.

[0009] Therefore, the present invention provides a lithium-ion battery overcharge testing device with temperature measurement and display using the above-mentioned structure. By setting a temperature sensor and a temperature test connector, it can collect the temperature data of the lithium-ion battery in real time during the overcharge process. The temperature data is displayed on the screen through the temperature measurement module, central processing module and display module in the control unit, so that the tester can intuitively understand the temperature change of the battery during overcharge, without the need for an additional temperature measurement device.

[0010] The battery holder's base employs a sliding connection between support part one and support part two, with a spring installed within the cavity of support part two. This allows the battery holder to adaptively adjust to accommodate lithium-ion batteries of different sizes. When batteries of different sizes are placed, fixing plates one and two can move relative to each other under the action of the spring, thus securely clamping the battery and improving the versatility and adaptability of the testing device.

[0011] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of an overcharge testing device for lithium-ion batteries with temperature measurement and display according to the present invention.

[0013] Fig. 2 This is a three-dimensional schematic diagram of the battery holder of this utility model;

[0014] Fig. 3 This is a schematic diagram of the internal structure of the battery holder base of this utility model;

[0015] Fig. 4 This is a schematic diagram of the control flow of the control unit of this utility model.

[0016] Figure label:

[0017] 1. Test chamber; 2. Battery holder; 21. Base; 211. Support part one; 212. Support part two; 213. Cavity; 214. Spring; 22. Fixing plate one; 23. Fixing plate two; 24. Positive terminal block; 25. Negative terminal block; 3. Overcharge test connector; 4. Temperature test connector; 5. Display screen; 6. Temperature sensor. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The features mentioned above or in the specific examples mentioned in this invention can be combined arbitrarily, and these specific embodiments are only used to illustrate this invention and are not intended to limit the scope of this invention.

[0019] Example

[0020] like Figs. 1 to 4 As shown, this utility model provides a lithium-ion battery overcharge testing device with temperature measurement and display, including a test box 1 and a battery holder 2. The test box 1 is provided with an overcharge test connector 3, a temperature test connector 4 and a display screen 5. The test box 1 is equipped with a control unit. The overcharge test connector 3, the temperature test connector 4 and the display screen 5 are all electrically connected to the control unit.

[0021] The control unit includes a central processing module, a temperature measurement module, an overcharge measurement module, and a display module. The temperature measurement module is electrically connected to temperature test connector 4 to accurately collect real-time temperature data of the lithium-ion battery during overcharging and transmit the data to the central processing module. The overcharge measurement module is electrically connected to overcharge test connector 3 to monitor various electrical parameters of the battery during overcharging and transmit these parameters to the central processing module. The temperature measurement module and the overcharge measurement module are connected to the central processing module via signal transmission. After comprehensively analyzing the received data, the central processing module transmits the processing results to the display module in signal form. The display module then converts the information into intuitive images or numbers, which are clearly displayed on the monitor through an electrical connection, allowing operators to easily understand the battery's overcharge status and temperature changes in real time. The central processing module, temperature measurement module, overcharge measurement module, and display module are all existing technologies and will not be described in detail.

[0022] The battery holder 2 includes a base 21, a first fixing plate 22, and a second fixing plate 23. Both the first fixing plate 22 and the second fixing plate 23 are fixedly connected to the base 21. The base 21 includes a first support part 211 and a second support part 212. The first support part 211 is fixedly connected to the bottom of the first fixing plate 22, and the second support part 212 is fixedly connected to the bottom of the second fixing plate 23. The first support part 211 and the second support part 212 are slidably connected, which facilitates the adjustment of the distance between the first fixing plate 22 and the second fixing plate 23, so that different types of lithium-ion batteries can be fixed. A cavity 213 is provided in the middle of the second support part 212. The side of the first support part 211 away from the first fixing plate 22 is slidably connected to the cavity 213. A spring 214 is provided in the cavity 213 near the second fixing plate 23. One end of the spring 214 is fixedly connected to the inner wall of the cavity 213, and the other end of the spring 214 is fixedly connected to the first support part 211.

[0023] When testing the battery, the support part 211 is pulled outward, and the spring 214 stretches as the support part 211 moves. Then, the lithium-ion battery is fixed between the fixing plate 22 and the fixing plate 23. When the support part 211 is released, the support part 211 moves back under the contraction of the spring 214, thereby clamping and fixing the lithium-ion battery, making it suitable for lithium-ion batteries of different sizes.

[0024] A positive terminal plate 24 is fixedly connected to the inward side of the first fixing plate 22, and a negative terminal plate 25 is provided on the inward side of the second fixing plate 23. Both the positive terminal plate 24 and the negative terminal plate 25 are connected to the overcharge test connector 3 via wires. The positive terminal plate 24 and the negative terminal plate 25 extend from the bottom of the base 21 to the upper side of the first fixing plate 22 and the second fixing plate 23, respectively, so that the positive and negative terminals of different types of lithium-ion batteries can be adapted to be connected for charging and transmitting data to the overcharge measurement module. A temperature sensor 6 is provided in the middle of the base 21. The temperature sensor 6 is connected to the temperature test connector 4 via wires. The temperature sensor 6 detects the temperature generated by the lithium-ion battery during charging and transmits the detected data to the temperature measurement module. The temperature sensor 6 can make full contact with the lithium-ion battery body, increasing the area for temperature measurement.

[0025] The process of using this utility model:

[0026] First, the lithium-ion battery to be tested is placed on the battery holder 2, with the positive and negative terminals connected to the positive terminal plate 24 and negative terminal plate 25, respectively. Since the support parts 211 and 212 of the base 21 are slidable, and under the action of the spring 214, the battery holder 2 can automatically adapt to the size of the lithium-ion battery, firmly clamping it. The positive terminal plate 24 and negative terminal plate 25 are connected to the overcharge test connector 3 via wires to begin the overcharge test on the lithium-ion battery. During the overcharge process, the temperature sensor 6 collects the battery's temperature data in real time and transmits the data to the temperature test connector 4 via wires.

[0027] Temperature test connector 4 transmits temperature data to the temperature measurement module in the control unit. The temperature measurement module processes the data and then transmits it to the central processing module. Simultaneously, overcharge test connector 3 transmits overcharge data, such as current and voltage, to the overcharge measurement module. The overcharge measurement module processes this data and also transmits it to the central processing module. The central processing module analyzes and processes the received temperature and overcharge data and transmits the temperature data to the display module. The display module displays the temperature data in real time on the screen 5, allowing testers to visually observe the temperature changes during battery overcharging.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A lithium-ion battery overcharge testing device with temperature measurement and display, characterized in that: The device includes a test chamber and a battery holder. The test chamber is equipped with an overcharge test connector, a temperature test connector, and a display screen. The test chamber contains a control unit. The overcharge test connector, temperature test connector, and display screen are all electrically connected to the control unit. The battery holder includes a base, a first fixing plate, and a second fixing plate. Both the first and second fixing plates are fixedly connected to the base. A positive terminal block is fixedly connected to the inward side of the first fixing plate, and a negative terminal block is fixed to the inward side of the second fixing plate. Both the positive and negative terminal blocks are connected to the overcharge test connector via wires. A temperature sensor is located in the middle of the base and is connected to the temperature test connector via wires.

2. The lithium-ion battery overcharge testing device with temperature measurement and display according to claim 1, characterized in that: The control unit includes a central processing module, a temperature measurement module, an overcharge measurement module, and a display module. The temperature measurement module is electrically connected to a temperature test connector, the overcharge measurement module is electrically connected to an overcharge test connector, the temperature measurement module and the overcharge measurement module are connected to the central processing module via signals, the central processing module is connected to the display module via signals, and the display module is electrically connected to a display.

3. The lithium-ion battery overcharge testing device with temperature measurement and display according to claim 1, characterized in that: The base includes a support part one and a support part two. The support part one and the support part two are slidably connected. The support part one is fixedly connected to the bottom of the fixed plate one, and the support part two is fixedly connected to the bottom of the fixed plate two.

4. The lithium-ion battery overcharge testing device with temperature measurement and display according to claim 3, characterized in that: The second support part has a cavity in the middle. The side of the first support part away from the first fixed plate is slidably connected to the cavity. A spring is provided in the cavity on the side near the second fixed plate. One end of the spring is fixedly connected to the inner wall of the cavity, and the other end of the spring is fixedly connected to the first support part.

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