Battery test system and battery test method

Abstract

The invention relates to the technical field of battery testing, in particular to a battery testing system and a battery testing method. The battery testing system comprises a water tank, the top of the water tank is provided with an opening, and fire extinguishing water is stored in the water tank; the tray is detachably mounted at the opening of the water tank, and the tray is used for bearing a battery to be tested; the battery state monitoring assembly is used for monitoring the working state of the to-be-tested battery and driving the battery testing system to be switched between a normal testing state and a high-risk state according to the working state of the to-be-tested battery; and when the battery testing system is in a high-risk state, the tray is separated from the opening of the water tank and falls into the water tank together with the battery to be tested. The battery thermal runaway risk is recognized in real time through the battery state monitoring assembly, the tray and the to-be-detected battery are automatically immersed in the fire extinguishing water in the high-risk stage, early-stage accurate early warning and automatic fire extinguishing of a fire are achieved, and extinguishing delay and secondary accident risks of a traditional post-event processing mode are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, and specifically to a battery testing system and battery testing method. Background Technology

[0002] As new energy vehicles continue to expand their market share globally as an energy-saving and environmentally friendly mode of transportation, consumers' demand for longer driving range is increasing, making the safety of battery packs, as their core power components, increasingly prominent. In recent years, frequent fires and explosions caused by battery packs have attracted widespread attention from the industry and the public. To ensure the safety and reliability of battery packs, mandatory safety tests such as overcharge, over-discharge, thermal shock, and short circuits are typically conducted during the research and development phase. However, these tests are highly susceptible to inducing thermal runaway, leading to fires or explosions. Therefore, how to achieve accurate and rapid detection in the initial stage of a battery pack fire, and promptly extinguish open flames and effectively prevent reignition, has become a key technical bottleneck that urgently needs to be addressed in battery fire suppression systems.

[0003] In related technologies, battery pack fire suppression solutions generally adopt a reactive approach, initiating manual firefighting measures, such as using fire-fighting sand or water, only after a fire has occurred. However, this method has significant drawbacks: firstly, it lacks an early warning mechanism before a fire breaks out, failing to intervene in the early stages of a fire and severely delaying firefighting efforts, easily missing the optimal window for suppression; secondly, relying on manual operation, improper firefighting procedures (such as incorrect water or sand dosage or spraying methods) can not only cause secondary accidents (such as electric shock or equipment short circuits) but also easily cause personal injury to operators and damage to surrounding facilities, resulting in high safety risks. The lag and operational risks of existing technologies can no longer meet the urgent needs of new energy vehicle battery safety protection. There is an urgent need to develop an innovative solution with real-time monitoring, rapid response, and automated firefighting capabilities to compensate for the deficiencies of the current technological system. Summary of the Invention

[0004] In response to the problem that battery testing systems in related technologies suffer from delayed risk handling and excessively high operational risks, they can no longer meet the urgent needs for safety protection of new energy vehicle batteries.

[0005] In a first aspect, embodiments of this application provide a battery testing system, which includes: A water tank with an opening at the top, the inner cavity of which is filled with fire extinguishing water; A tray, which is detachably mounted to the opening of the water tank, is used to hold the battery to be tested; A battery status monitoring component is used to monitor the operating status of the battery under test and drive the battery testing system to switch between normal testing status and high-risk status based on the operating status of the battery under test; wherein, When the battery testing system is in normal testing mode, the tray is installed in close contact with the opening of the water tank; When the battery testing system is in a high-risk state, the tray separates from the water tank opening and falls into the inner cavity of the water tank together with the battery under test.

[0006] In conjunction with the first aspect, in one embodiment, the water tank is provided with an electromagnet, which is used to attract the tray so that the tray fits snugly against the opening of the water tank.

[0007] It is worth noting that the adsorption mechanism of the electromagnet 3 ensures the stable fit of the tray under normal testing conditions and enables rapid release under high-risk conditions, significantly improving the response speed and reliability of the tray 2 during state switching and avoiding misoperation or delays caused by human intervention.

[0008] In conjunction with the first aspect, in one embodiment, the water tank is equipped with an independent power supply, which is signal-connected to the battery status monitoring component, and the independent power supply is used to control the electromagnet to switch between an adsorption state and a demagnetization state.

[0009] Understandably, the signal connection between the independent power supply and the monitoring components ensures that the electromagnet switching process is not affected by external power fluctuations, achieving high-precision and high-reliability state switching, and guaranteeing the timeliness and stability of fire extinguishing operations.

[0010] In conjunction with the first aspect, in one embodiment, the independent power supply includes a UPS power supply.

[0011] It should be noted that the UPS power supply can provide four electromagnets with 5 hours of operating power, thus avoiding economic losses caused by accidentally discharging batteries into the water tank due to unexpected power outages. Using a UPS power supply as an independent power source provides uninterrupted power support, ensuring reliable electromagnet demagnetization and fire extinguishing operations even in abnormal situations such as power outages, significantly enhancing the system's safety redundancy and continuous operation capabilities in complex scenarios.

[0012] In conjunction with the first aspect, in one embodiment, the bottom of the water tank is provided with a plurality of wheels.

[0013] Understandably, the wheels 4 at the bottom of the water tank 1 facilitate the flexible movement and quick positioning of the device, improve the convenience and adaptability of the testing process, meet the deployment requirements of different testing sites, and avoid the reduction in testing efficiency caused by fixed equipment.

[0014] In conjunction with the first aspect, in one embodiment, the water tank is provided with a spray unit.

[0015] In conjunction with the first aspect, in one embodiment, it further includes: a test chamber, which houses the battery status monitoring component.

[0016] In conjunction with the first aspect, in one embodiment, the battery state monitoring component includes: An infrared thermal imaging camera is used to monitor the temperature of the battery under test; A battery testing device used to collect the status information of the battery under test.

[0017] Secondly, embodiments of this application provide a battery testing method utilizing the aforementioned battery testing system, comprising: Place the battery to be tested on the tray of the water tank; Battery testing is performed on the battery under test, and the battery status monitoring component is used to monitor the battery under test to obtain operating status information. The risk level of the battery under test is determined based on the working status information, and the working status of the tray is switched according to the risk level of the battery under test.

[0018] In conjunction with the second aspect, in one implementation, switching the operating state of the battery testing system according to the risk level of the battery under test includes: When the risk level of the battery under test is high, the electromagnet is demagnetized by an independent power source, causing the tray and the battery under test to fall into the fire extinguishing water in the water tank.

[0019] The beneficial effects of the technical solutions provided in this application include: This application identifies the risk of battery thermal runaway in real time through a battery status monitoring component, and automatically immerses the tray and the battery under test into fire extinguishing water during high-risk stages, thereby achieving early and accurate fire warning and automated fire extinguishing, effectively avoiding the delays in fire fighting and the risk of secondary accidents associated with traditional post-disaster handling methods. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the battery testing system in an embodiment of this application.

[0022] In the picture: 1. Water tank; 2. Tray; 3. Electromagnet; 4. Wheel. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0024] In response to the problem that battery testing systems in related technologies suffer from delayed risk handling and excessively high operational risks, they can no longer meet the urgent needs for safety protection of new energy vehicle batteries.

[0025] In a first aspect, this application provides a battery testing system, comprising: a water tank 1 and a tray 2; wherein the water tank 1 has an opening at its top, and the inner cavity of the water tank 1 contains fire-extinguishing water; the tray 2 is detachably installed at the opening of the water tank 1, and the tray 2 is used to carry the battery to be tested; a battery status monitoring component is used to monitor the operating status of the battery to be tested, and to drive the battery testing system to switch between a normal testing state and a high-risk state according to the operating status of the battery to be tested; wherein... When the battery testing system is in normal testing mode, the tray 2 is installed in close contact with the opening of the water tank 1; When the battery testing system is in a high-risk state, the tray 2 separates from the opening of the water tank 1 and falls into the inner cavity of the water tank together with the battery under test.

[0026] Understandably, this application identifies the risk of battery thermal runaway in real time through a battery status monitoring component, and automatically immerses the tray and the battery under test into fire extinguishing water during high-risk stages, thereby achieving early and accurate fire warning and automated fire extinguishing, effectively avoiding the delays in fire fighting and the risk of secondary accidents associated with traditional post-disaster handling methods.

[0027] In some preferred embodiments, the water tank 1 is provided with an electromagnet 3, which is used to attract the tray 2 so that the tray 2 is fitted and installed in close contact with the opening of the water tank 1.

[0028] It is worth noting that the adsorption mechanism of the electromagnet 3 ensures the stable fit of the tray under normal testing conditions and enables rapid release under high-risk conditions, significantly improving the response speed and reliability of the tray 2 during state switching and avoiding misoperation or delays caused by human intervention.

[0029] In some alternative embodiments, the water tank 1 is equipped with an independent power supply, which is connected to the battery status monitoring component. The independent power supply is used to control the electromagnet 3 to switch between an adsorption state and a demagnetization state.

[0030] Understandably, the signal connection between the independent power supply and the monitoring components ensures that the electromagnet switching process is not affected by external power fluctuations, achieving high-precision and high-reliability state switching, and guaranteeing the timeliness and stability of fire extinguishing operations.

[0031] Preferably, the independent power supply includes a UPS power supply.

[0032] It should be noted that the UPS power supply can provide 5 hours of operating power, which is sufficient to support four electromagnets, thus avoiding economic losses caused by accidentally discharging batteries into the water tank due to unexpected power outages. Using a UPS power supply as an independent power source provides uninterrupted power support, ensuring reliable electromagnet demagnetization and fire extinguishing operations even in abnormal situations such as power outages, significantly enhancing the system's safety redundancy and continuous operation capabilities in complex scenarios.

[0033] Furthermore, the bottom of the water tank 1 is provided with multiple wheels 4.

[0034] Understandably, the wheels 4 at the bottom of the water tank 1 facilitate the flexible movement and quick positioning of the device, improve the convenience and adaptability of the testing process, meet the deployment requirements of different testing sites, and avoid the reduction in testing efficiency caused by fixed equipment.

[0035] Preferably, the water tank 1 is equipped with a spray unit.

[0036] Furthermore, the water tank 1 is equipped with a water valve that connects to the spray unit. When the battery presents a risk management requirement, but the risk level does not reach a high level, the water valve automatically opens, allowing the spray unit to spray the battery under test to suppress minor safety hazards.

[0037] In some optional embodiments, the system further includes a testing chamber housing the battery status monitoring component. Specifically, the battery status monitoring component includes an infrared thermal imager, a battery testing device, and a smoke sensor; wherein the infrared thermal imager is used to monitor the temperature of the battery under test; and the battery testing device is used to collect status information of the battery under test.

[0038] It is worth noting that the battery status monitoring component of this application includes, but is not limited to, the monitoring devices mentioned above.

[0039] Furthermore, the battery testing room is equipped with battery testing equipment, infrared thermal imagers, smoke sensors, and other devices. The battery testing room is also equipped with a water inlet and a solenoid valve.

[0040] It should be noted that the testing room provides a controlled environment for the battery status monitoring components, reducing external interference factors, ensuring the accuracy and real-time nature of monitoring data, avoiding false alarms or missed alarms, and improving the overall system safety and testing reliability. The integration of the infrared thermal imager with the battery testing equipment enables multi-dimensional real-time monitoring of battery temperature and status, providing high-precision early warning of thermal runaway and reliable data support for automated fire suppression decisions.

[0041] In summary, this application achieves early and accurate warning of battery thermal runaway by integrating battery state monitoring components and an automatic switching mechanism. When a high-risk state is detected, the battery under test and its tray are automatically immersed in fire extinguishing water, effectively avoiding the delays in firefighting and the risk of secondary accidents associated with traditional post-incident handling methods. This significantly improves the safety, response speed, and reliability of the battery testing process, meeting the urgent needs of new energy vehicle battery safety protection.

[0042] Secondly, this application provides a vehicle testing production line, comprising: a battery testing system, the battery testing system including: a water tank 1 and a tray 2; wherein, A water tank 1, with an opening at the top, contains fire-extinguishing water; a tray 2, detachably mounted to the opening of the water tank 1, is used to hold the battery under test; a battery status monitoring component monitors the operating status of the battery under test and drives the battery testing system to switch between normal testing and high-risk states based on the operating status of the battery under test; wherein... When the battery testing system is in normal testing mode, the tray 2 is installed in close contact with the opening of the water tank 1; When the battery testing system is in a high-risk state, the tray 2 separates from the opening of the water tank 1 and falls into the water tank together with the battery under test.

[0043] Understandably, this application identifies the risk of battery thermal runaway in real time through a battery status monitoring component, and automatically immerses the tray and the battery under test into fire extinguishing water during high-risk stages, thereby achieving early and accurate fire warning and automated fire extinguishing, effectively avoiding the delays in fire fighting and the risk of secondary accidents associated with traditional post-disaster handling methods.

[0044] In some preferred embodiments, the water tank 1 is provided with an electromagnet 3, which is used to attract the tray 2 so that the tray 2 is fitted and installed in close contact with the opening of the water tank 1.

[0045] It is worth noting that the adsorption mechanism of the electromagnet 3 ensures the stable fit of the tray under normal testing conditions and enables rapid release under high-risk conditions, significantly improving the response speed and reliability of the tray 2 during state switching and avoiding misoperation or delays caused by human intervention.

[0046] In some alternative embodiments, the water tank 1 is equipped with an independent power supply, which is connected to the battery status monitoring component. The independent power supply is used to control the electromagnet 3 to switch between an adsorption state and a demagnetization state.

[0047] Understandably, the signal connection between the independent power supply and the monitoring components ensures that the electromagnet switching process is not affected by external power fluctuations, achieving high-precision and high-reliability state switching, and guaranteeing the timeliness and stability of fire extinguishing operations.

[0048] Preferably, the independent power supply includes a UPS power supply.

[0049] It should be noted that the UPS power supply can provide four electromagnets with 5 hours of operating power, thus avoiding economic losses caused by accidentally discharging batteries into the water tank due to unexpected power outages. Using a UPS power supply as an independent power source provides uninterrupted power support, ensuring reliable electromagnet demagnetization and fire extinguishing operations even in abnormal situations such as power outages, significantly enhancing the system's safety redundancy and continuous operation capabilities in complex scenarios.

[0050] Furthermore, the bottom of the water tank 1 is provided with multiple wheels 4.

[0051] Understandably, the wheels 4 at the bottom of the water tank 1 facilitate the flexible movement and quick positioning of the device, improve the convenience and adaptability of the testing process, meet the deployment requirements of different testing sites, and avoid the reduction in testing efficiency caused by fixed equipment.

[0052] Preferably, the water tank 1 is equipped with a spray unit.

[0053] Furthermore, the water tank 1 is equipped with a water valve that connects to the spray unit. When the battery presents a risk management requirement, but the risk level does not reach a high level, the water valve automatically opens, allowing the spray unit to spray the battery under test to suppress minor safety hazards.

[0054] In some optional embodiments, the system further includes a testing chamber housing the battery status monitoring component. Specifically, the battery status monitoring component includes: an infrared thermal imager for monitoring the temperature of the battery under test; and battery testing equipment for collecting status information of the battery under test.

[0055] Furthermore, the battery testing room is equipped with battery testing equipment, infrared thermal imagers, smoke sensors, and other devices. The battery testing room is also equipped with a water inlet and a solenoid valve.

[0056] It should be noted that the testing room provides a controlled environment for the battery status monitoring components, reducing external interference factors, ensuring the accuracy and real-time nature of monitoring data, avoiding false alarms or missed alarms, and improving the overall system safety and testing reliability. The integration of the infrared thermal imager with the battery testing equipment enables multi-dimensional real-time monitoring of battery temperature and status, providing high-precision early warning of thermal runaway and reliable data support for automated fire suppression decisions.

[0057] Thirdly, this application provides a battery testing method utilizing the battery testing system described above, comprising: Step S1: Place the battery to be tested on the tray 2 of the water tank 1.

[0058] Step S2: Perform a battery test on the battery under test, and simultaneously use a battery status monitoring component to monitor the battery under test to obtain working status information.

[0059] Step S3: Determine the risk level of the battery under test based on the working status information, and switch the working status of tray 2 according to the risk level of the battery under test.

[0060] Understandably, this method achieves seamless integration from testing to fire extinguishing by monitoring battery status in real time and automatically switching tray working status, ensuring immediate intervention in the early stages of a fire and completely eliminating delays and safety risks associated with manual operation.

[0061] In some specific implementation methods, the battery testing safety risk level is divided into seven levels as shown in the table below:

[0062] Scenario 1: When the risk level is between 0 and 4, the battery under test can be placed on tray 2 of water tank 1, with the water inlet of the trolley connected to the water source. The testing equipment and the battery BMS are connected via CAN communication. During the battery test, the battery testing equipment reads the BMS detection data inside the battery. When an abnormality is detected, the testing equipment reads the battery BMS temperature test data or the infrared thermal imager detects that the battery pack temperature exceeds the monitoring threshold. The testing equipment then controls the water inlet valve to automatically open the water source, allowing the water tank inlet valve to directly spray water onto the battery for fire extinguishing.

[0063] Scenario 2: When the risk level is 5-6, tray 2 is attached to the upper opening of water tank 1 by electromagnet. The battery under test is placed on tray 2, and water tank 1 is filled with water through the inlet. The testing equipment is connected to the battery BMS via CAN communication. During the battery testing process, the battery testing equipment reads the BMS detection data from the battery and uses an infrared thermal imager.

[0064] Furthermore, multiple threshold levels are set based on the monitored temperature. Level S1 is a safety alert, outputting a fire alarm signal, triggering an audible and visual alarm in the fire protection system, and simultaneously transmitting the infrared thermal imaging camera's monitoring video signal to the monitoring center and the corresponding display screen at the battery trial production station, allowing for personnel intervention. Level S2 is a high-risk level, where the testing equipment immediately cuts off the test power supply, and simultaneously, the testing equipment automatically controls the disconnection of the electromagnet power supply, directly immersing the burned battery into the fire extinguishing water in water tank 2.

[0065] It is worth noting that, under high-risk conditions, the independent power supply precisely controls the demagnetization of the electromagnet, ensuring that the tray and the battery under test fall quickly and reliably into the fire extinguishing water, achieving immediacy and precision in fire extinguishing response, and effectively preventing the fire from spreading and reigniting.

[0066] In summary, this application achieves early and accurate warning of battery thermal runaway by integrating battery state monitoring components and an automatic switching mechanism. When a high-risk state is detected, the battery under test and its tray are automatically immersed in fire extinguishing water, effectively avoiding the delays in firefighting and the risk of secondary accidents associated with traditional post-incident handling methods. This significantly improves the safety, response speed, and reliability of the battery testing process, meeting the urgent needs of new energy vehicle battery safety protection.

[0067] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] It should be noted that in this application, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A battery testing system, comprising: The application relates to a battery test system, which comprises the following parts: a water tank (1) with an opening at the top, the inner cavity of the water tank (1) being filled with fire-extinguishing water; a tray (2) which is detachably installed on the opening of the water tank (1) and is used for carrying a battery to be tested; a battery state monitoring assembly which is used for monitoring the working state of the battery to be tested and driving a battery test system to switch between a normal test state and a high-risk state according to the working state of the battery to be tested; wherein, when the battery test system is in the normal test state, the tray (2) is installed in close contact with the opening of the water tank (1); when the battery test system is in the high-risk state, the tray (2) is separated from the opening of the water tank (1) and falls into the inner cavity of the water tank together with the battery to be tested.

2. The battery testing system of claim 1, wherein: An electromagnet (3) is arranged on the water tank (1) and used for adsorbing the tray (2) so that the tray (2) is installed in close contact with the opening of the water tank (1).

3. The battery testing system of claim 2, wherein: An independent power supply is arranged on the water tank (1) and connected with the battery state monitoring assembly, and the independent power supply is used for controlling the electromagnet (3) to switch between an adsorption state and a demagnetization state.

4. The battery testing system of claim 3, wherein, The independent power supply comprises a UPS power supply.

5. The battery testing system of claim 1, wherein: A plurality of wheels (4) are arranged at the bottom of the water tank (1).

6. The battery testing system of claim 1, wherein: A spraying part is arranged on the water tank (1).

7. The battery testing system of claim 1, wherein, The application further comprises: a test room in which the battery state monitoring assembly is arranged.

8. The battery testing system of claim 1, wherein, The battery state monitoring assembly comprises: an infrared imaging thermal imager which is used for monitoring the temperature of the battery to be tested; a battery test device which is used for collecting state information of the battery to be tested.

9. A battery testing method using the battery testing system according to claim 1, characterized by, The application relates to a battery test method, which comprises the following steps: placing a battery to be tested on a tray (2) of a water tank (1); carrying out a battery test on the battery to be tested and monitoring the battery to be tested by using a battery state monitoring assembly to obtain working state information; determining the risk level of the battery to be tested according to the working state information and switching the working state of the tray (2) according to the risk level of the battery to be tested.

10. The battery testing method of claim 9, wherein, The switching of the working state of the battery test system according to the risk level of the battery to be tested comprises the following steps: when the risk level of the battery to be tested is a high-risk level, the electromagnet (3) is demagnetized by using an independent power supply so that the tray (2) and the battery to be tested fall into the fire-extinguishing water of the water tank (1).

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