Semi-automatic testing equipment and method for pressure intensity of air generated by battery
Through the semi-automatic test equipment for battery gas production pressure, presses and sensors are used to detect changes in the internal pressure of the battery, the problems of low testing accuracy and safety hazards in the existing technology are solved, and the battery safety and reliability are improved.
Patent Information
- Application Number
- CN202510838263.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-09-05
AI Technical Summary
In the prior art, there are safety hazards in the internal gas production pressure test of cylindrical batteries and the test accuracy is not high. Traditional methods are easily disturbed by external factors, and some methods require damage to the battery structure.
The battery gas-generating pressure semi-automatic testing equipment is used to drive the sensing components and pin down the battery by using the press, and the pressure sensor is used to detect the internal pressure changes of the battery through the pressure sensor and the pressure sensor, and combine the isolation box and the limit structure to ensure safety and accuracy.
It realizes safe and accurate testing of the internal air production pressure of the battery, avoids safety hazards and improves the testing accuracy, and is suitable for battery health assessment and potential safety warning.
Smart Images
Figure CN120594232A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of battery testing, and in particular to a semi-automatic testing device and method for battery gas production pressure. Background Art
[0002] With the rapid development of electric vehicles, energy storage systems, and other fields, the safety and reliability of lithium-ion batteries, as a core power source, have attracted considerable attention. Cylindrical batteries, due to their high energy density, low cost, and mature manufacturing processes, have played a key role in the power battery field. However, during battery use, overcharging, over-discharging, high temperatures, and internal short circuits can lead to electrolyte decomposition, electrode material failure, and other issues, which in turn can generate large amounts of gas and increase internal battery pressure. When the pressure exceeds the battery casing's tolerance limit, it can cause battery swelling, leakage, and even fire and explosion accidents.
[0003] Therefore, real-time monitoring of the internal gas pressure of cylindrical batteries is of great significance for assessing battery health, warning of potential safety hazards, and optimizing battery design and manufacturing processes. However, current testing technologies for the internal gas pressure of cylindrical batteries still face the following challenges: traditional testing methods often use indirect measurement methods, such as inferring internal pressure by measuring battery deformation, which are easily affected by external factors and difficult to ensure test accuracy. In addition, some testing methods require opening holes in the battery casing or destroying the battery structure, which poses safety risks. Summary of the Invention
[0004] The purpose of the present invention is to provide a semi-automatic testing device and method for battery gas production pressure to solve the existing problems in battery internal gas production pressure testing and provide technical guarantee for the safe use and performance improvement of cylindrical batteries.
[0005] The technical solution adopted by the semi-automatic testing device and method for battery gas production pressure disclosed in the present invention is: A semi-automatic testing device for battery gas production pressure, comprising a press and a fixed base. The press is fixedly arranged above the fixed base, the fixed base is used to place the test battery, the output shaft of the press is fixedly connected to the sensor component, the lower end of the sensor component is provided with a pressure pin, the pressure pin is arranged above the corresponding fixed base, and the press drives the sensor component to move up and down.
[0006] As a preferred solution, the sensing assembly includes a pressure sensor and a pressure sensor. The pressure sensor is connected to the pressure needle and is used to detect the pressure change when the needle penetrates into the battery. The pressure sensor is used to detect the vertical pressure change during the needle penetrating the battery.
[0007] As a preferred solution, the fixed base is externally covered with an isolation box, and a through hole for the pressure needle to pass through is opened on the top of the isolation box.
[0008] As a preferred solution, the isolation box is made of transparent material.
[0009] As a preferred solution, a circular limiting hole is opened in the middle of the fixed base, and a fixing bolt is provided on the side of the fixed base, which is used to limit the test battery in the limiting block by tightening the fixing bolt.
[0010] A detection method for the semi-automatic battery gas production pressure test device includes the following steps: S1, cutting the battery to be tested vertically to expose the current-blocking device, and applying sealing glue to the aluminum foil of the current-blocking device; S2, placing the processed battery in a fixed base; S3, adjust the length and position of the pressing needle of the press machine to ensure that the pressing needle is aligned with the current blocking device of the battery and the length of the pressing needle can be inserted into the battery by 1-2CM; S4, during the pressing process, control the pressure sensor pressure reading range to 10-30N and maintain it for 1-5 seconds, and obtain the battery pressure value by reading the air pressure sensor reading.
[0011] As a preferred solution, 3-5 groups of data need to be collected for each experimental test, and the average value is taken.
[0012] The beneficial effects of the semi-automatic battery gas production pressure testing equipment and method disclosed in the present invention are: a press is used to drive the sensor component and the pressure needle to press down, the pressure needle is used to pierce the test battery, and the pierced test battery is kept in a state, the pressure when the press is pressed down is detected by the sensor component, and the pressure change value inside the test battery after the pressure needle penetrates the test battery is detected, thereby solving the problems of safety hazards and inaccurate test data in the process of testing the gas production pressure inside the battery in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of a semi-automatic testing device for battery gas production pressure of the present invention. DETAILED DESCRIPTION
[0014] The present invention will be further described and explained below in conjunction with specific embodiments and accompanying drawings: Please refer to Figure 1 A semi-automatic testing device for battery gas production pressure comprises a press machine 1 and a fixed base 4. The press machine 1 is fixedly arranged above the fixed base 4. The fixed base 4 is used to place a test battery 5. The output shaft of the press machine 1 is fixedly connected to the sensor component 2. A pressure pin is provided at the lower end of the sensor component 2. The pressure pin is arranged above the fixed base 4. The press machine 1 drives the sensor component 2 to move up and down.
[0015] The press machine 1 drives the sensor component 2 and the pressure needle to press down, and the pressure needle is used to pierce the test battery 5 and keep it in the state of being penetrated into the test battery 5. The sensor component 2 detects the pressure when the press machine 1 is pressed down, and the pressure change value inside the test battery 5 after the pressure needle penetrates into the test battery 5, thereby solving the problem of safety hazards in the process of gas production pressure inside the test battery 5 and inaccurate test data in the prior art.
[0016] The sensing component 2 includes a pressure sensor and a pressure sensor. The pressure sensor is connected to the pressure needle and is used to detect the pressure change when the needle penetrates into the battery. The pressure sensor is used to detect the vertical pressure change during the needle penetrating the battery to prevent thermal runaway of the battery due to overpressure.
[0017] An isolation box 3 is provided on the outside of the fixed base 4. A through hole is provided on the top of the isolation box 3 for the pressure needle to pass through. The isolation box 3 is made of transparent material and is used for safety protection and observation of the battery during the gas puncture process.
[0018] A circular limiting hole is provided in the middle of the fixed base 4, and a fixing bolt is provided on the side of the fixed base 4. The fixing bolt is tightened to limit the test battery 5 in the limiting block. The bottom of the test battery 5 is placed into the limiting hole and tightened with the fixing bolt so that the test battery 5 does not shake when subjected to vertical force.
[0019] A detection method for the semi-automatic battery gas production pressure test device includes the following steps: S1, cut the column of the battery to be tested to expose the current blocking device, and apply sealing glue on the aluminum foil of the current blocking device. The sealing glue inside is more convenient for the pressure needle to press into the battery compared to the column, and also reduces the pressure effect of the column on the pressure needle. The sealing glue can also be used to ensure the airtightness inside the battery and ensure the accuracy of the test.
[0020] S2, placing the treated battery in the fixed base 4, ensuring that the current blocking device of the test battery 5 faces upward and is accurately aligned with the position of the pressure pin.
[0021] S3, adjust the length and position of the pressing needle of the press machine 1 to ensure that the pressing needle is aligned with the current blocking device of the battery and the length of the pressing needle can be inserted into the battery by 1-2CM to avoid the pressing needle from penetrating deeply and causing serious damage to the inside of the battery and affecting the test structure.
[0022] S4, during the downward pressing process, control the pressure sensor pressure reading range to 10-30N and maintain it for 1-5 seconds. Obtain the pressure value of the battery by reading the air pressure sensor reading. Each experimental test needs to collect 3-5 groups and take the average value.
[0023] By inserting the pressure needle into the test battery 5, the interior of the test battery 5 changes after the pressure needle is inserted, and gas is generated and pressurized, thereby affecting the surface pressure of the internal battery. The pressure value of the battery is obtained through the reading of the air pressure sensor to determine whether the battery is within a safe range, thereby achieving the purpose of testing, and using the press machine 1 in combination with manual loading to achieve semi-automatic testing.
[0024] The present invention provides a semi-automatic testing device for the gas production pressure of a battery. The device drives a sensor component and a pressure needle to press down through a press machine, utilizes the pressure needle to pierce the test battery, and maintains the state of being penetrated into the test battery. The sensor component detects the pressure when the press machine is pressed down, and the pressure change value inside the test battery after the pressure needle penetrates the test battery, thereby solving the problems of safety hazards and inaccurate test data in the process of testing the gas production pressure inside the battery in the prior art.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.
Claims
1. A semi-automatic test device for battery gas production pressure, characterized in that: The press and the fixed base, the press is fixedly arranged above the fixed base, the fixed base is used to place the test battery, the output shaft of the press is fixedly connected to the sensor component, the lower end of the sensor component is provided with a pressure pin, the pressure pin is arranged above the corresponding fixed base, and the press drives the sensor component to move up and down.
2. A semi-automatic battery gas production pressure test device according to claim 1, characterized in that: The sensing assembly includes a pressure sensor and a pressure sensor. The pressure sensor is connected to the pressure needle and is used to detect the pressure change when the needle penetrates into the battery. The pressure sensor is used to detect the vertical pressure change during the needle penetrating the battery.
3. A semi-automatic test device for battery gas production pressure according to claim 1, characterized in that: An isolation box body is provided on the exterior of the fixed base, and a through hole for a pressure needle to pass through is provided on the top of the isolation box body.
4. A semi-automatic test device for battery gas production pressure according to claim 3, characterized in that: The isolation box is made of transparent material.
5. A semi-automatic test device for battery gas production pressure according to claim 1, characterized in that: A circular limiting hole is provided in the middle of the fixing base, and a fixing bolt is provided on the side of the fixing base. The fixing bolt is tightened to limit the test battery in the limiting block.
6. A detection method for the semi-automatic test equipment for battery gas production pressure according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, cutting the battery to be tested vertically to expose the current-blocking device, and applying sealing glue to the aluminum foil of the current-blocking device; S2, placing the processed battery in a fixed base; S3, adjust the length and position of the pressing needle of the press machine to ensure that the pressing needle is aligned with the current blocking device of the battery and the length of the pressing needle can be inserted into the battery by 1-2CM; S4, during the pressing process, control the pressure sensor pressure reading range to 10-30N and maintain it for 1-5 seconds, and obtain the battery pressure value by reading the air pressure sensor reading.
7. A semi-automatic test method for battery gas production pressure according to claim 6, characterized in that: Each experimental test needs to collect 3-5 groups and take the average value.