Control system for new energy automobile lithium ion battery thermal runaway test
By designing a control system for thermal runaway testing of lithium-ion batteries in new energy vehicles, the problems of complex data sorting and security risks in the existing technology are solved, real-time monitoring and rapid response are achieved, and security risks and data during the test process are reduced. Integrate complexity.
Patent Information
- Application Number
- CN202421121920.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing new energy battery thermal runaway detection platform cannot effectively meet the high requirements. The data sorting is complex and lacks a safety alarm system. There are security risks such as smoke, fire, and explosion. The test platform is not standardized and the multi-module combination is built, resulting in complex data monitoring.
Design a control system for thermal runaway testing of lithium-ion batteries in new energy vehicles, including test chambers and control systems, equipped with high-pressure spray guns, video monitors, infrared thermal imagers, expansion force sensors, heating plates, smoke sensing The device and leakage sensor can realize real-time data monitoring and alarm through the upper computer monitoring software to reduce the testing risk.
Real-time monitoring and regulation of expansion force, smoke, temperature and liquid leakage is achieved, which reduces safety risks during the test process, can promptly identify the loss of control of lithium batteries and quickly extinguish fires, improving data integration efficiency and safety.
Smart Images
Figure CN222213268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of new energy battery detection and analysis, and in particular to a control system for thermal runaway testing of lithium-ion batteries of new energy vehicles. Background Art
[0002] At present, the requirements for battery failure analysis in the battery thermal runaway detection project in the new energy field are getting higher and higher. The current detection platform, detection method, and detection data analysis cannot effectively meet the requirements. For example: the output data is relatively messy, and the data collation during the detection process is relatively complicated. It is necessary to manually integrate the data of several host computers, and the integrated data cannot timely feedback the cause of the failure analysis; there are safety risks: in the thermal runaway test, the battery is prone to smoke, fire, explosion and other safety phenomena. During the test process, the host computer software is all data recording, there is no safety alarm system, and it is impossible to identify risks in advance.
[0003] In addition, there are shortcomings such as the test platform is not standardized, there are many requirements for thermal runaway detection, there are many different data to be monitored, and the test platform is built by freely combining multiple test modules.
[0004] In order to solve the above-mentioned problems, a multifunctional and efficient testing and effectively operating control system is provided. The utility model proposes a control system for thermal runaway testing of lithium-ion batteries of new energy vehicles. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles, comprising a test box and a control system connected to a test system inside the test box, wherein the test box comprises a reinforcement wall, a test cavity is formed inside the reinforcement wall, and high-pressure spray guns are symmetrically arranged on the left and right sides of the reinforcement wall;
[0007] A video monitor is installed on one side of the reinforcement wall, and an infrared thermal imager is installed on the other side;
[0008] A test system is provided in the middle of the test box, and the test system includes a battery cell to be tested installed on a test workbench, a clamping plate is provided on the outside of the battery cell, an expansion force sensor and a heating plate are provided on the outside of the clamping plate, and the heating plate transmits the temperature to the surface of the battery cell through the clamping plate, a smoke sensor is suspended above the battery cell, and the clamping plate is electrically connected to the explosion-proof pipe outwardly;
[0009] A wire passing tube is installed on the reinforcement wall, and the outer wires of the explosion-proof tube pass through the wire passing tube and are connected to the control system outside the test box.
[0010] Preferably, the high-pressure spray gun is arranged below the video monitor and is monitored by the video monitor. The video monitor is mounted on a bracket and can move its head. The monitoring range of the video monitors on the left and right sides is the entire test workbench, wherein the video monitors on the left and right sides can fully illuminate the entire test workbench.
[0011] Preferably, an expansion force pressurizing device is provided on the outside of the battery cell, and force is applied to the clamping plate through the expansion force pressurizing device, thereby transmitting the force to the battery cell, thereby testing whether the force applied to the battery cell meets industry standards.
[0012] Preferably, the smoke sensor is installed above the inverted L-shaped support frame, and the smoke alarm is fixedly suspended, thereby effectively sensing the safety status of the battery cell.
[0013] Preferably, a leakage sensor is provided on the outer side of the battery cell, which can detect whether the battery cell leaks during operation.
[0014] Preferably, the control system is internally provided with host computer monitoring software and operation platform monitoring software.
[0015] Preferably, the infrared thermal imager is also mounted on the bracket.
[0016] Compared with the prior art, the beneficial effects of the utility model are: through the optimization of the test workbench, the test workbench can realize expansion force monitoring, smoke sensing monitoring, battery pack overall temperature monitoring, and leakage monitoring, and perform real-time monitoring and real-time adjustment. The monitored temperature is convenient for subsequent failure analysis. A high-pressure spray gun and a video monitor are arranged on the top of the test workbench to effectively reduce the risks occurring during the test process, so that the device can determine and identify the time and space phenomena of lithium batteries occurring under different circumstances. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0019] Explanation of the reference numerals in the figure: 1-test box, 11-reinforced wall, 12-test chamber, 13-high-pressure spray gun, 14-bracket, 15 video monitor, 2-test system, 21-battery cell, 22-expansion force sensor, 23-heating plate, 24-leakage sensor, 25-clamp, 26-smoke sensor, 27-test workbench, 3-explosion-proof pipe, 4-wire pipe, 5-control system. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] See also Figure 1 , an embodiment provided by the utility model:
[0023] A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles, comprising a test box 1 and a control system 5 connected to a test system inside the test box 1, wherein the test box 1 comprises a reinforcement wall 11, wherein a test cavity 12 is formed in the reinforcement wall 11, and high-pressure spray guns 13 are symmetrically arranged on the left and right sides of the reinforcement wall 11, and an infrared thermal imager 16 and a video monitor 15 are installed on the reinforcement wall 11, wherein in order to facilitate overall monitoring, the high-pressure spray gun 13 is arranged below the video monitor 15 and is monitored by the video monitor 15, and the video monitor 15 and the infrared thermal imager 16 are arranged on the left and right sides of the reinforcement wall 11, and the high-pressure spray gun 13 is arranged below the video monitor 15 and is monitored by the video monitor 15, and the video monitor 15 and the infrared thermal imager 16 are arranged on the left and right sides of the reinforcement wall 11, and the high-pressure spray gun 13 is arranged below the video monitor 15 and is monitored by the video monitor 15, and the high-pressure spray gun 13 and the infrared thermal imager 16 are arranged on the right and left sides of the reinforcement wall 11, and the high-pressure spray gun 13 and the infrared thermal imager 16 are arranged on the left and right sides of the reinforcement wall 11, and the high-pressure spray gun 13 and the infrared thermal imager 16 are arranged on the right and left ... The video monitor 15 is mounted on a bracket 14 and can move with its head swung. The bracket 14 is fixedly mounted on the reinforcement wall 11. The monitoring range of the video monitors 15 on the left and right sides is the entire test bench 27. The figure shows the video monitor 15 on the left and the infrared thermal imager 16 on the right. However, in actual settings, several video monitors 15 and high-pressure spray guns 13 arranged around the test bench 27 can be installed according to needs. It should be noted that several video monitors 15 are able to provide an overview of the test bench 27 in the full field of view, because the working status of the battery cell 21 needs to be monitored.
[0024] A test system 2 is provided in the middle of the test box 1, and the test system 2 includes a battery cell 21 to be tested installed on a test workbench 27, a clamping plate 25 is provided on the outside of the battery cell 21, and an expansion force sensor 22 and a heating plate 23 are provided on the outside of the clamping plate 25, wherein, in order to test the working effect of the battery cell 21, an expansion force pressurizing device (not shown in the figure) is provided on the outside of the battery cell 21, that is, to achieve an expansion force monitoring effect, and in order to achieve a leakage monitoring effect, a leakage sensor 24 is provided on the outside of the battery cell 21;
[0025] See Figure 1 The heating plate 23 transmits the temperature to the surface of the battery core 21 through the clamping plate 25. A smoke sensor 26 is suspended above the battery core 21. Specifically, the smoke sensor 26 is installed above the inverted L-shaped support frame, and the clamping plate 25 is electrically connected to the explosion-proof pipe 3 outwardly;
[0026] A wire pipe 4 is installed on the reinforcement wall 11 , and the outer wires of the explosion-proof pipe 3 pass through the wire pipe 4 and are connected to the control system 5 outside the test box 1 .
[0027] In specific use, the implementation principle of the test is:
[0028] (1) Thermal runaway detection is performed on new energy lithium batteries by heating them with a practical heating sheet. During the test, the lithium battery is heated by a heating sheet (i.e., a heating module unit). The heating module unit can be controlled by a control system. Specifically, a pre-alarm is performed through the host computer monitoring software in the control system. For example, risk values such as voltage drop and temperature rise to 80°C or 150°C can be monitored;
[0029] (2) Monitor the expansion force signal through the expansion force sensor to perform real-time monitoring and data collection;
[0030] (3) The smoke sensor is used to monitor the smoke signal. Once the battery cell opens the valve and smokes, an alarm is immediately issued through the host computer monitoring software in the control system. It should be noted that the host computer monitoring software is the conventional monitoring software used in the prior art. The main innovation of this solution is to combine its multiple parts into a whole. Therefore, the structure and principle of the host computer monitoring software are not described in detail. In addition, the whole can also be effectively represented by using the control system;
[0031] (4) A high-pressure spray gun is set up to form a high-pressure spray system. Once the test sample is out of control and catches fire, the video monitor above will monitor it or the infrared thermal imager will monitor the overall temperature of the battery pack. The infrared thermal imaging signal monitoring function will monitor and collect temperature data in real time. When the overall temperature of the battery rises to risk values such as 80°C or 130°C, the host computer monitoring software will immediately alarm. Then, when the infrared imaging signal is sensed, it will be transmitted to the control system, and the control system will immediately control the spray switch to turn on the fire quickly to ensure that the spray head covers the entire bottom of the test space. During the monitoring process, it is ensured that no safety accidents will occur. At the same time, it can effectively collect relevant data of lithium batteries and effectively control the overall test of the out-of-control test.
[0032] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles, characterized in that: The invention comprises a test box (1) and a control system (5) connected to a test system inside the test box (1), wherein the test box (1) comprises a reinforcement wall (11), a test chamber (12) is formed inside the reinforcement wall (11), high-pressure spray guns (13) are symmetrically arranged on the left and right sides of the reinforcement wall (11), a video monitor (15) is installed on one side of the reinforcement wall (11), and an infrared thermal imager (16) is installed on the other side; A test system (2) is provided in the middle of the test box (1), and the test system (2) includes a battery cell (21) to be tested mounted on a test workbench (27), a clamping plate (25) is provided on the outer side of the battery cell (21), an expansion force sensor (22) and a heating plate (23) are provided on the outer side of the clamping plate (25), and the heating plate (23) transmits the temperature to the surface of the battery cell (21) through the clamping plate (25), a smoke sensor (26) is suspended above the battery cell (21), and the clamping plate (25) is electrically connected to the explosion-proof pipe (3) outwardly; A wire pipe (4) is installed on the reinforcement wall (11), and the outer wires of the explosion-proof pipe (3) pass through the wire pipe (4) and are connected to the control system (5) outside the test box (1).
2. A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles according to claim 1, characterized in that: The high-pressure spray gun (13) is arranged below the video monitor (15) and is monitored by the video monitor (15). The video monitor (15) is mounted on a bracket (14) and can move with its head swinging. The monitoring range of the video monitors (15) on the left and right sides is the entire test workbench (27).
3. A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles according to claim 2, characterized in that: The infrared thermal imager (16) is also mounted on the bracket (14).
4. A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles according to claim 1, characterized in that: An expansion force pressurizing device is provided outside the battery core (21).
5. A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles according to claim 1, characterized in that: The smoke sensor (26) is installed above the inverted L-shaped support frame.
6. A control system for thermal runaway testing of lithium-ion batteries for new energy vehicles according to claim 1, characterized in that: A liquid leakage sensor (24) is provided on the outer side of the battery core (21).