An automatic temperature acquisition and alarm device suitable for large-scale battery testing

Abstract

This utility model relates to the field of battery performance testing technology and discloses an automatic temperature acquisition and alarm device suitable for large-scale battery testing. It includes a battery body for providing electrical energy, a membrane switch for monitoring contact status fixedly connected to one side of the battery body, adhesive tape for connecting the membrane switch and the battery body fixedly connected to the surface of the membrane switch, and a thermocouple sensor for acquiring the battery surface temperature fixedly connected to the end of the membrane switch away from the battery body. The two sides of the thermocouple sensor are fixedly connected to the adhesive tape on the surface of the membrane switch via the adhesive tape. Through integrated design, the membrane switch, thermocouple sensor, and adhesive tape are collaboratively fixed to the battery body, forming a precise temperature acquisition and contact monitoring system. The adhesive tape uses specific materials and reasonable specifications to ensure stable fixation and electrical safety at high temperatures, solving the problem of temperature acquisition failure caused by traditional fixing methods.

Description

Technical Field

[0001] This utility model relates to the field of battery performance testing technology, specifically to an automatic temperature acquisition and alarm device suitable for large-scale battery testing. Background Technology

[0002] Battery testing systems are key instruments in the field of mechanical engineering for multi-dimensional testing of battery performance and safety. Their core functions include charging and discharging simulation of power batteries, standard operating condition testing, and rapid data acquisition. They possess extended functions such as high stability, open programmable control, and auxiliary voltage / temperature testing. However, traditional temperature acquisition devices often suffer from distorted temperature data due to poor contact between thermocouple sensors and the battery surface, and lack an effective contact status monitoring mechanism, making it difficult to detect anomalies in real time.

[0003] For example, CN120194860A discloses a battery electrolyte leakage and surface temperature testing device and its testing method, including a host computer, a data acquisition and control unit, a temperature control unit, a thermal imaging unit, a smoke sensing unit, an electrolyte leakage acquisition unit, a fire extinguishing spray unit, and an alarm unit. This invention adopts a completely new design concept and method, employing novel data acquisition, temperature control, and data processing techniques, thus solving problems such as complex testing operations, low efficiency, low measurement accuracy, and low safety performance.

[0004] However, in large-scale battery testing, traditional temperature acquisition devices often suffer from distorted temperature data due to poor contact between the thermocouple sensor and the battery surface, and lack an effective contact status monitoring mechanism, making it difficult to detect anomalies in real time. Furthermore, the adhesive tape used to fix the sensor is prone to failure under high and low temperature testing environments, exhibiting problems such as decreased adhesion and material aging, further exacerbating contact instability. This not only affects the accuracy of test results but may also lead to safety hazards due to the failure to promptly address temperature acquisition anomalies, increasing the cost and risk of manual monitoring in large-scale testing. Therefore, those skilled in the art provide an automatic temperature acquisition alarm device suitable for large-scale battery testing to solve the problems mentioned in the background. Utility Model Content

[0005] The purpose of this invention is to provide an automatic alarm device for temperature acquisition suitable for large-scale battery testing, which solves the problem that traditional temperature acquisition devices in the prior art often cause temperature data distortion due to poor contact between thermocouple sensors and battery surfaces, and lack an effective contact status monitoring mechanism, making it difficult to detect abnormalities in real time.

[0006] This utility model provides the following technical solution: an automatic alarm device for temperature acquisition suitable for large-scale battery testing, comprising a battery body for providing electrical energy, a membrane switch for monitoring contact status fixedly connected to one side of the battery body, adhesive tape for connecting the membrane switch and the battery body fixedly connected to the surface of the membrane switch, a thermocouple sensor for acquiring the surface temperature of the battery fixedly connected to the end of the membrane switch away from the battery body, and the two sides of the thermocouple sensor being fixedly connected to the adhesive tape on the surface of the membrane switch by the adhesive tape.

[0007] As a preferred embodiment of the above technical solution, a positive battery terminal for connecting to a charging and discharging control system is fixedly connected to one side of the top of the battery body, and a negative battery terminal for connecting to a charging and discharging control system is fixedly connected to the side of the top of the battery body away from the positive battery terminal.

[0008] As a preferred embodiment of the above technical solution, the pressure triggering threshold of the membrane switch is in the range of 0.5 to 5 N, and the membrane switch triggers an alarm signal when the contact pressure between the thermocouple sensor and the surface of the battery body is lower than this threshold.

[0009] As a preferred embodiment of the above technical solution, the contact area between the membrane switch and the surface of the battery body is not less than 1.2 times the area of ​​the thermocouple sensor's detection end, and the center of the membrane switch coincides with the center of the thermocouple sensor's detection end.

[0010] As a preferred embodiment of the above technical solution, the width of the adhesive tape is not less than 1.5 times the width of the membrane switch, and the adhesive tape covers the overlapping area of ​​the membrane switch and the thermocouple sensor, with a coverage length not less than 2 / 3 of the length of the membrane switch.

[0011] As a preferred embodiment of the above technical solution, the adhesive tape is made of polyimide or Teflon, and the temperature resistance range of the adhesive tape is not lower than -20℃ to 200℃, and the electrical insulation resistance is not less than 100MΩ.

[0012] As a preferred embodiment of the above technical solution, an alarm module is also provided on the side of the battery body near the membrane switch. The alarm module is electrically connected to the membrane switch and is also communicatively connected to the battery body charging and discharging control system.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention integrates a membrane switch, a thermocouple sensor, and adhesive tape to the battery body, creating a precise temperature acquisition and contact monitoring system. The membrane switch monitors the contact pressure between the thermocouple and the battery surface in real time, and with a trigger threshold of 0.5–5N, it can promptly identify poor contact or the risk of detachment. The adhesive tape, made of polyimide or Teflon, with a reasonable width and coverage, ensures stable fixation under high-temperature conditions and enhances testing safety through its electrical insulation properties, effectively solving the problem of temperature acquisition failure caused by traditional fixation methods.

[0015] Based on the aforementioned beneficial effects, this invention enables the orderly conduct of the testing process by connecting the positive and negative terminals of the battery to the charge and discharge control system. The alarm module, in conjunction with the membrane switch and the charge and discharge system, can promptly issue warnings and trigger pause or termination commands in case of abnormalities, significantly reducing testing errors and safety hazards. The overall structure is compact and easy to install and maintain, making it particularly suitable for large-scale battery testing scenarios. While improving the accuracy of temperature data, it reduces manpower monitoring costs and significantly improves the reliability and efficiency of testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an automatic temperature acquisition and alarm device suitable for large-scale battery testing.

[0017] Figure 2 A schematic diagram of the adhesive tape connection for an automatic temperature acquisition and alarm device suitable for large-scale battery testing;

[0018] Figure 3 This is a schematic diagram of a membrane switch connection for an automatic temperature acquisition and alarm device suitable for large-scale battery testing.

[0019] In the diagram: 1. Battery body; 2. Membrane switch; 3. Adhesive tape; 4. Thermocouple sensor; 5. Battery positive terminal; 6. Battery negative terminal. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figures 1-3As shown, this utility model provides a technical solution: an automatic alarm device for temperature acquisition suitable for large-scale battery testing, including a battery body 1 for providing power, a membrane switch 2 for monitoring the contact state fixedly connected to one side of the battery body 1, an adhesive tape 3 for connecting the membrane switch 2 and the battery body 1 fixedly connected to the surface of the membrane switch 2, a thermocouple sensor 4 for acquiring the surface temperature of the battery fixedly connected to the end of the membrane switch 2 away from the battery body 1, and the two sides of the thermocouple sensor 4 are fixedly connected to the adhesive tape 3 and the adhesive tape 3 on the surface of the membrane switch 2.

[0022] By fixing the membrane switch 2, adhesive tape 3, and thermocouple sensor 4 to the battery body 1 in a tightly connected manner, an integrated temperature acquisition and contact monitoring system is formed: the membrane switch 2 can monitor the contact status between the thermocouple sensor 4 and the battery surface in real time, ensuring the effectiveness of temperature acquisition and avoiding test data distortion caused by poor contact; the adhesive tape 3 not only firmly connects the membrane switch 2 and the battery body 1, but also strengthens the tightness of the adhesion between the two and the battery surface by fixing both sides of the thermocouple sensor 4, reducing the risk of failure caused by loose components during the test; the overall structure is compact and the functions of each component work together, which can play an efficient role in large-scale battery testing scenarios, ensuring the accuracy of temperature acquisition, improving the reliability and stability of the test through real-time monitoring of the contact status, and simplifying the installation and maintenance process of the device.

[0023] As one implementation method in this embodiment, please refer to Figure 1 As shown, a positive battery electrode 5 for connecting to a charging and discharging control system is fixedly connected to one side of the top of the battery body 1, and a negative battery electrode 6 for connecting to a charging and discharging control system is fixedly connected to the side of the top of the battery body 1 away from the positive battery electrode 5.

[0024] By setting up the positive electrode 5 and the negative electrode 6 of the battery, the battery body 1 is stably connected to the charging and discharging control system, ensuring that the battery can work according to the preset charging and discharging program during the test, providing stable working conditions for temperature acquisition and other testing links, and ensuring that the entire testing process is carried out in an orderly manner.

[0025] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the pressure trigger threshold range of the membrane switch 2 is 0.5-5N, and when the contact pressure between the thermocouple sensor 4 and the surface of the battery body 1 is lower than this threshold, the membrane switch 2 triggers an alarm signal.

[0026] The pressure trigger threshold setting accurately identifies the contact state between thermocouple sensor 4 and the battery surface. When the contact pressure is below this range, it indicates a possible poor contact or impending detachment. The membrane switch 2 will promptly trigger an alarm, preventing temperature detection failure due to contact issues, ensuring the accuracy of temperature data, and reducing testing errors.

[0027] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the contact area between the membrane switch 2 and the surface of the battery body 1 is not less than 1.2 times the area of ​​the detection end of the thermocouple sensor 4, and the center of the membrane switch 2 coincides with the center of the detection end of the thermocouple sensor 4.

[0028] The larger contact area and the center-aligned design allow the membrane switch 2 to monitor the contact pressure between the thermocouple sensor 4 and the battery surface more comprehensively and accurately. Since the probe end of the thermocouple is the key part for temperature acquisition, the center alignment ensures that the membrane switch 2 is more sensitive in monitoring the contact state of this key part, improving the reliability of contact anomaly identification.

[0029] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the width of the adhesive tape 3 is not less than 1.5 times the width of the membrane switch 2, and the adhesive tape 3 covers the overlapping area of ​​the membrane switch 2 and the thermocouple sensor 4, with a coverage length not less than 2 / 3 of the length of the membrane switch 2.

[0030] The wider adhesive tape 3 and reasonable coverage area enhance the fixation of the membrane switch 2 and thermocouple sensor 4, reducing poor contact caused by insecure fixation. Simultaneously, sufficient coverage of the overlapping area further ensures tight contact between both and the battery surface, reducing the risk of test anomalies caused by adhesive tape 3 fixation issues. Furthermore, when the adhesive tape 3 is used at high temperatures for extended periods, causing its adhesiveness to deteriorate, or when the battery bulges, the pressure exerted on the membrane switch 2 by the adhesive tape 3 decreases. The charge / discharge control system receives this signal and issues an alarm, thus preventing situations where abnormal battery temperature readings go undetected for extended periods.

[0031] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the adhesive tape 3 is made of polyimide or Teflon, and the temperature resistance range of the adhesive tape 3 is not lower than -20℃ to 200℃, and the electrical insulation resistance is not less than 100MΩ.

[0032] Polyimide and Teflon materials are characterized by high temperature resistance, corrosion resistance, and good electrical insulation, enabling them to withstand the high and low temperature environments during battery testing and preventing the adhesive tape 3 from failing due to high temperatures and affecting the fixation effect. Good electrical insulation prevents safety hazards such as leakage during testing, ensuring the safety and stability of the test.

[0033] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, an alarm module is also provided on the side of the battery body 1 near the membrane switch 2. The alarm module is electrically connected to the membrane switch 2 and is also communicatively connected to the charging and discharging control system of the battery body 1.

[0034] The electrical connection between the alarm module and membrane switch 2 allows for a timely response when the membrane switch 2 triggers an alarm signal, alerting personnel through appropriate alarm methods. The communication connection with the charge / discharge control system enables the system to react promptly to abnormalities, such as pausing or terminating the test, preventing more serious test accidents caused by abnormal temperature acquisition and protecting the battery samples and testing equipment.

[0035] Working Principle: During battery performance testing, the battery body 1 is connected to the charge / discharge control system via the positive terminal 5 and the negative terminal 6, and performs charge / discharge operations according to test requirements. At this time, the thermocouple sensor 4 is tightly attached to the battery surface to collect battery temperature data. The membrane switch 2 is placed on the battery surface and in close contact with the thermocouple sensor 4, continuously monitoring the contact pressure between the thermocouple sensor 4 and the battery surface. When the contact pressure between the thermocouple sensor 4 and the battery surface falls below the threshold range of 0.5-5N due to prolonged high temperature, battery bulging, decreased adhesiveness of the adhesive tape 3, or improper application, the membrane switch 2 is triggered and generates an alarm signal. This alarm signal is transmitted to the electrically connected alarm module, which then issues a corresponding alarm prompt to alert the operator. Simultaneously, the alarm module sends the alarm signal to the battery charge / discharge control system. The charge / discharge control system may pause or terminate the current test process according to a preset program to prevent abnormal temperature acquisition from affecting test results or causing safety issues. Throughout the process, the polyimide or Teflon tape 3, with its excellent high-temperature resistance, insulation and other properties, as well as its reasonable width and coverage, stably fixes the membrane switch 2 and the thermocouple sensor 4, ensuring their close contact with the battery surface and providing a reliable fixing foundation for the normal operation of the entire device.

[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An automatic temperature acquisition and alarm device suitable for large-scale battery testing, characterized in that: The device includes a battery body (1) for providing electrical energy. A membrane switch (2) for monitoring the contact state is fixedly connected to one side of the battery body (1). An adhesive tape (3) for connecting the membrane switch (2) and the battery body (1) is fixedly connected to the surface of the membrane switch (2). A thermocouple sensor (4) for collecting the surface temperature of the battery is fixedly connected to one end of the membrane switch (2) away from the battery body (1). The two sides of the thermocouple sensor (4) are fixedly connected to the adhesive tape (3) on the surface of the membrane switch (2) through the adhesive tape (3).

2. The automatic temperature acquisition and alarm device suitable for large-scale battery testing according to claim 1, characterized in that: The top of the battery body (1) is fixedly connected to a positive battery electrode (5) for connecting to the charging and discharging control system on one side, and the top of the battery body (1) is fixedly connected to a negative battery electrode (6) for connecting to the charging and discharging control system on the side away from the positive battery electrode (5).

3. The automatic temperature acquisition and alarm device suitable for large-scale battery testing according to claim 1, characterized in that: The pressure trigger threshold range of the membrane switch (2) is 0.5 to 5 N. When the contact pressure between the thermocouple sensor (4) and the surface of the battery body (1) is lower than the threshold, the membrane switch (2) triggers an alarm signal.

4. The automatic temperature acquisition and alarm device suitable for large-scale battery testing according to claim 3, characterized in that: The contact area between the membrane switch (2) and the surface of the battery body (1) is not less than 1.2 times the area of ​​the probe end of the thermocouple sensor (4), and the center of the membrane switch (2) coincides with the center of the probe end of the thermocouple sensor (4).

5. The automatic temperature acquisition and alarm device suitable for large-scale battery testing according to claim 1, characterized in that: The width of the adhesive tape (3) is not less than 1.5 times the width of the membrane switch (2), and the adhesive tape (3) covers the overlapping area of ​​the membrane switch (2) and the thermocouple sensor (4), with a coverage length not less than 2 / 3 of the length of the membrane switch (2).

6. The automatic temperature acquisition and alarm device suitable for large-scale battery testing according to claim 5, characterized in that: The adhesive tape (3) is made of polyimide or Teflon, and the temperature resistance range of the adhesive tape (3) is not lower than -20℃ to 200℃, and the electrical insulation resistance is not less than 100MΩ.

7. The automatic temperature acquisition and alarm device suitable for large-scale battery testing according to claim 2, characterized in that: An alarm module is also provided on the side of the battery body (1) near the membrane switch (2). The alarm module is electrically connected to the membrane switch (2) and is also communicatively connected to the charging and discharging control system of the battery body (1).

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