Battery performance test danger early warning system and method

Abstract

The invention provides a battery performance test danger early warning system and method, and the system comprises a smoke pump which is used for pumping gas in an environment bin after the performance test of a battery in the environment bin is started, and a smoke pumping inlet of the smoke pump is formed in the top of the interior of the environment bin; the smoke sensor is connected with the smoke suction pump and is used for detecting whether smoke exists in the gas or not; and the alarm is used for sending out a smoke early warning signal when smoke exists in the gas. The system can timely detect dangerous conditions such as smoking and abnormal temperature of the battery in the testing process and give out early warning, so that the safety of testers is effectively guaranteed, the damage risk of laboratory equipment is reduced, and the safety and reliability of battery testing are improved.

Description

Technical Field

[0001] The present application relates to the field of power battery test safety technology, and in particular to a battery performance test hazard warning system and method. Background Art

[0002] With growing global attention to environmental protection and sustainable development, new energy vehicles (NEVs) are rapidly developing as a green, low-carbon means of transportation. Power batteries are a core component of NEVs, and their performance directly impacts vehicle range, acceleration, and safety. Therefore, power battery verification, particularly performance testing, is crucial.

[0003] During the testing process of power batteries, performance tests such as charge and discharge cycle durability, rate capability, and overcharge and over-discharge are typically required. These tests are typically conducted over long periods of time and under high load conditions to ensure the reliability and safety of the batteries under various extreme operating conditions. However, during this verification process, power batteries are subject to a certain risk of failure. These failures can range from temperature runaway and smoke to fire or even explosion. These accidents can not only damage laboratory equipment but also pose significant safety risks to operators.

[0004] Therefore, how to provide timely hazard warnings during battery performance testing to protect the safety of laboratory equipment and operators is a technical problem that needs to be solved. Summary of the Invention

[0005] The present application provides a battery performance test hazard warning system and method, which can solve the technical problem in the prior art that hazard warnings cannot be issued in a timely manner during the power battery performance test.

[0006] In a first aspect, an embodiment of the present application provides a battery performance test hazard warning system, wherein the battery performance test hazard warning system includes:

[0007] a smoke extraction pump, used to extract gas from the environmental chamber after starting the performance test of the batteries in the environmental chamber, wherein the smoke extraction inlet of the smoke extraction pump is arranged at the top of the interior of the environmental chamber;

[0008] a smoke sensor connected to the smoke pump and used to detect whether there is smoke in the gas;

[0009] An alarm is used to send out a smoke warning signal when smoke exists in the gas.

[0010] In combination with the first aspect, in one embodiment, two ends of the smoke pump are connected to the smoke inlet and the smoke sensor respectively through pipelines;

[0011] The length of the pipeline is greater than a preset length threshold.

[0012] In conjunction with the first aspect, in one embodiment, the system further includes:

[0013] The filter is arranged on the pipeline between the smoke inlet and the smoke pump, and is used for filtering water vapor in the gas.

[0014] In conjunction with the first aspect, in one embodiment, the system further includes:

[0015] A flow sensor is provided on the pipeline between the smoke inlet and the smoke pump, and is used to detect the flow of the gas and issue a hazard warning system failure warning when it detects that the flow of the gas is less than a preset flow threshold.

[0016] In combination with the first aspect, in one embodiment, the smoke extraction pump, smoke sensor, filter, flow sensor and alarm are all arranged outside the environmental chamber.

[0017] In conjunction with the first aspect, in one embodiment, the system further includes:

[0018] A temperature sensor is provided in the battery and is used to detect the temperature of the battery and send a battery overtemperature warning signal when the temperature of the battery is higher than a preset temperature threshold.

[0019] In a second aspect, an embodiment of the present application provides a battery performance test hazard warning method, the battery performance test hazard warning method comprising:

[0020] After starting to perform a performance test on the batteries in the environmental chamber, extracting gas from the environmental chamber through a smoke pump, wherein a smoke inlet of the smoke pump is disposed at the top of the interior of the environmental chamber;

[0021] detecting whether smoke exists in the gas by a smoke sensor connected to the smoke pump;

[0022] When smoke exists in the gas, the alarm sends out a smoke warning signal.

[0023] In conjunction with the second aspect, in one embodiment, two ends of the smoke pump are connected to the smoke inlet and the smoke sensor respectively through pipelines;

[0024] The length of the pipeline is greater than a preset length threshold.

[0025] In conjunction with the second aspect, in one embodiment, the method further includes:

[0026] The water vapor in the gas is filtered through a filter, wherein the filter is arranged on the pipeline between the smoke inlet and the smoke pump.

[0027] In conjunction with the second aspect, in one embodiment, the method further includes:

[0028] Detecting the flow rate of the gas through a flow sensor, and issuing a hazard warning system failure warning when detecting that the flow rate of the gas is less than a preset flow threshold;

[0029] Wherein, the flow sensor is arranged on the pipeline between the smoke inlet and the smoke pump.

[0030] The present application provides a battery performance test hazard warning system and method. The system includes: a smoke pump for extracting gas from the environmental chamber after starting a performance test on the battery in the chamber, wherein the smoke inlet of the smoke pump is located at the top of the chamber; a smoke sensor connected to the smoke pump for detecting the presence of smoke in the gas; and an alarm for issuing a smoke warning signal when smoke is present. The system can promptly detect dangerous conditions such as smoke and abnormal temperature during battery testing and issue warnings, effectively ensuring the safety of test personnel, reducing the risk of damage to laboratory equipment, and improving the safety and reliability of battery testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the architecture of an embodiment of a battery performance test hazard warning system of the present application;

[0032] Figure 2 This is a flow chart of an embodiment of a battery performance test hazard warning method of the present application. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It is worth noting that the battery of the present application may be a power battery or other types of batteries.

[0035] First, let's explain the test environment for battery performance testing. The battery performance testing system thoroughly verifies the battery pack's charge and discharge endurance, rate charge and discharge, overcharge, and over-discharge performance, ensuring the reliability of the power battery after formal installation on the vehicle. The battery performance testing system primarily consists of a charging and discharging cabinet, an environmental chamber, and a backend platform. The environmental chamber provides the testing environment for the batteries under test, which are stored within it. The charging and discharging equipment, located outside the chamber, provides the battery with the required charge and discharge voltage and current. The environmental chamber, power battery, and charging and discharging equipment can all be stored in the test room, while the backend platform can be located in the control room. Testers can remotely control the battery testing process from the control room. The test room and control room are securely isolated and explosion-proof, ensuring the safety of test personnel in the event of an emergency during the battery performance test.

[0036] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0037] In a first aspect, an embodiment of the present application provides a battery performance test hazard warning system.

[0038] In one embodiment, referring to Figure 1 , Figure 1 This is a schematic diagram of the architecture of an embodiment of the battery performance test hazard warning system of this application. Figure 1 As shown, the battery performance test hazard warning system includes:

[0039] The smoke pump is used to extract the gas in the environmental chamber after starting the performance test of the batteries in the environmental chamber, wherein the smoke inlet of the smoke pump is arranged at the top of the interior of the environmental chamber.

[0040] It's worth noting that when testing battery performance, if a battery fails and emits smoke, the smoke will concentrate at the top of the environmental chamber. For this reason, a smoke inlet is located in the smoke-collecting area at the top of the chamber. When the battery pack is tested inside the chamber, a smoke pump begins operating continuously, drawing gas from the top of the chamber for testing, enabling quick and easy detection and early warning.

[0041] A smoke sensor is connected to the smoke pump and is used to detect whether smoke exists in the gas.

[0042] The alarm is used to send out a smoke warning signal when smoke exists in the gas.

[0043] It's worth noting that the alarm can be installed in locations like control rooms and laboratory monitoring rooms, with smoke sensors communicating with the alarm. When the smoke alarm detects smoke, it immediately issues a smoke warning signal, which is then synchronized with alarms in other locations like the control room and laboratory monitoring room, prompting staff to implement emergency measures and evacuate personnel.

[0044] In one embodiment, two ends of the smoke pump are connected to the smoke inlet and the smoke sensor respectively through pipelines; wherein the length of the pipeline is greater than a preset length threshold.

[0045] The length of the pipe between the smoke inlet and the smoke sensor is set to be greater than the length threshold, so that the gas drawn in through the smoke inlet passes through a certain length of pipe and the detected gas temperature is as close to room temperature as possible, ensuring the reliability of smoke detection and warning.

[0046] In an optional embodiment, the system further comprises: a filter, which is arranged on the pipeline between the smoke inlet and the smoke pump, and is used to filter water vapor in the gas.

[0047] It should be understood that the gas extracted by the smoke pump carries water vapor and high and low temperatures in the ambient chamber. Passing through the filter can effectively remove water vapor in the gas to ensure that the gas is dry. The dried gas passes through the filter and is passed to the smoke alarm, which can further improve the reliability of smoke detection.

[0048] As a preferred embodiment, the system also includes: a flow sensor, which is arranged on the pipeline between the smoking inlet and the smoking pump, for detecting the flow of the gas and issuing a danger warning system failure warning when it detects that the flow of the gas is less than a preset flow threshold.

[0049] It's worth noting that since the smoke pump operated continuously during the test, there was a certain probability of damage due to pipe blockage or pump failure. In this case, the system would be unable to draw smoke. Even if a battery malfunctioned and smoked during the test, the system would not be able to detect it. Therefore, this implementation incorporates a gas flow sensor in the pipe. When the flow sensor detects that the extracted gas flow rate falls below the set flow threshold, it immediately issues a hazard warning system failure alert, prompting personnel to troubleshoot the warning system.

[0050] In one embodiment, the smoke pump, smoke sensor, filter, flow sensor, and alarm are all located outside the test chamber. Placing the smoke pump, smoke sensor, filter, and flow sensor outside the environmental chamber ensures that these devices operate efficiently and accurately without being affected by the chamber's temperature and humidity, thereby improving the accuracy and timeliness of battery performance test hazard warnings.

[0051] In an optional embodiment, the system further includes a temperature sensor disposed within the battery pack for detecting the battery's temperature and issuing a battery overtemperature warning signal when the battery's temperature exceeds a preset threshold. When the temperature sensor within the battery pack detects that the battery's temperature abnormally exceeds the preset threshold, an emergency alert is activated, signaling a battery overtemperature warning and advising the tester to suspend the test. The temperature threshold can be set based on battery characteristics or the threshold recommended by the battery manufacturer.

[0052] The battery performance test hazard warning system provided in this application can incorporate a multi-level warning process. When a battery temperature abnormality exceeding a limit is detected, an emergency reminder procedure is implemented, advising the operator to suspend the test. When a smoke signal is detected, an emergency warning process is initiated and personnel are evacuated. This system can promptly detect dangerous conditions such as abnormal battery temperature and smoke during testing and issue warnings, effectively ensuring the safety of test personnel, reducing the risk of damage to laboratory equipment, and improving the safety and reliability of battery testing.

[0053] In a second aspect, an embodiment of the present application also provides a battery performance test hazard warning method.

[0054] In one embodiment, referring to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of the battery performance test hazard warning method of this application. Figure 2 As shown, the battery performance test hazard warning methods include:

[0055] Step S101: After starting to perform a performance test on the batteries in the environmental chamber, extracting gas from the environmental chamber through a smoke pump, wherein the smoke inlet of the smoke pump is arranged at the top of the interior of the environmental chamber.

[0056] It's worth noting that when testing battery performance, if a battery fails and emits smoke, the smoke will concentrate at the top of the environmental chamber. For this reason, a smoke inlet is located in the smoke-collecting area at the top of the chamber. When the battery pack is tested inside the chamber, a smoke pump begins operating continuously, drawing gas from the top of the chamber for testing, enabling quick and easy detection and early warning.

[0057] Step S102: detecting whether there is smoke in the gas by using a smoke sensor connected to the smoke pump.

[0058] Step S103: When smoke exists in the gas, the alarm device issues a smoke warning signal.

[0059] It's worth noting that the alarm can be installed in locations like control rooms and laboratory monitoring rooms, with smoke sensors communicating with the alarm. When the smoke alarm detects smoke, it immediately issues a smoke warning signal, which is then synchronized with alarms in other locations like the control room and laboratory monitoring room, prompting staff to implement emergency measures and evacuate personnel.

[0060] Furthermore, in one embodiment, two ends of the smoke pump are connected to the smoke inlet and the smoke sensor respectively through pipelines, wherein the length of the pipeline is greater than a preset length threshold.

[0061] The length of the pipe between the smoke inlet and the smoke sensor is set to be greater than the length threshold so that the gas drawn in through the smoke inlet passes through a certain length of pipe and the detected gas temperature is as close to room temperature as possible to ensure the reliability of smoke detection.

[0062] Furthermore, in one embodiment, the method further includes:

[0063] The water vapor in the gas is filtered through a filter, wherein the filter is arranged on the pipeline between the smoke inlet and the smoke pump.

[0064] It should be understood that the gas extracted by the smoke pump carries water vapor and high and low temperatures in the ambient chamber. Passing through the filter can effectively remove water vapor in the gas to ensure that the gas is dry. The dried gas passes through the filter and is passed to the smoke alarm, which can further improve the reliability of smoke detection.

[0065] Furthermore, in one embodiment, the method further includes:

[0066] Detecting the flow rate of the gas through a flow sensor, and issuing a hazard warning system failure warning when detecting that the flow rate of the gas is less than a preset flow threshold;

[0067] Wherein, the flow sensor is arranged on the pipeline between the smoke inlet and the smoke pump.

[0068] It's worth noting that since the smoke pump operated continuously during the test, there was a certain probability of damage due to pipe blockage or pump failure. In this case, the system would be unable to draw smoke. Even if a battery malfunctioned and smoked during the test, the system would not be able to detect it. Therefore, this implementation incorporates a gas flow sensor in the pipe. When the flow sensor detects that the extracted gas flow rate falls below the set flow threshold, it immediately issues a hazard warning system failure alert, prompting personnel to troubleshoot the warning system.

[0069] Furthermore, in one embodiment, the smoke extraction pump, smoke sensor, filter, flow sensor and alarm are all arranged outside the environmental chamber.

[0070] Among them, the smoke pump, smoke sensor, filter, and flow sensor are installed outside the environmental chamber to ensure that these devices can operate efficiently and accurately without being affected by the temperature and humidity of the environmental chamber, thereby improving the accuracy and timeliness of the battery performance test hazard warning.

[0071] Furthermore, in one embodiment, the method further includes:

[0072] The temperature of the battery is detected by a temperature sensor disposed in the battery, and when the temperature of the battery is higher than a preset temperature threshold, a battery over-temperature warning signal is issued.

[0073] When the temperature sensor in the battery pack detects that the battery temperature exceeds the preset temperature threshold, an emergency warning signal is activated, suggesting that the test personnel suspend the test. The temperature threshold can be set based on battery characteristics or the threshold recommended by the battery manufacturer.

[0074] The battery performance test hazard warning method provided in this application can be combined with a multi-level warning program. When the battery temperature is detected to be abnormal and exceeding the limit, an emergency reminder program is implemented, suggesting that the experimental operator suspend the test. When smoke signals are detected, emergency warning processing is carried out and personnel are evacuated. It can promptly detect dangerous situations such as abnormal temperature and smoke during the battery test and issue warnings, effectively ensuring the safety of test personnel, reducing the risk of damage to laboratory equipment, and improving the safety and reliability of battery testing.

[0075] Among them, the implementation of the above-mentioned battery performance test hazard warning method corresponds to the above-mentioned battery performance test hazard warning system embodiment, and its functions and implementation processes are no longer repeated here.

[0076] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0077] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.

[0078] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0079] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0080] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.

[0081] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present application.

[0082] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A battery performance test hazard warning system, characterized in that: The battery performance test hazard warning system includes: a smoke extraction pump, used to extract gas from the environmental chamber after starting the performance test of the batteries in the environmental chamber, wherein the smoke extraction inlet of the smoke extraction pump is arranged at the top of the interior of the environmental chamber; a smoke sensor connected to the smoke pump and used to detect whether there is smoke in the gas; The alarm is used to send out a smoke warning signal when smoke exists in the gas.

2. The battery performance test hazard warning system according to claim 1, wherein: The two ends of the smoke pump are respectively connected to the smoke inlet and the smoke sensor through pipelines; The length of the pipeline is greater than a preset length threshold.

3. The battery performance test hazard warning system according to claim 2, characterized in that: The system also includes: The filter is arranged on the pipeline between the smoke inlet and the smoke pump, and is used for filtering water vapor in the gas.

4. The battery performance test hazard warning system according to claim 3, characterized in that: The system also includes: A flow sensor is provided on the pipeline between the smoke inlet and the smoke pump, and is used to detect the flow of the gas and issue a hazard warning system failure warning when it detects that the flow of the gas is less than a preset flow threshold.

5. The battery performance test hazard warning system according to claim 4, characterized in that: The smoke extraction pump, smoke sensor, filter, flow sensor and alarm are all arranged outside the environmental chamber.

6. The battery performance test hazard warning system according to claim 1, wherein: The system also includes: A temperature sensor is provided in the battery and is used to detect the temperature of the battery and send a battery overtemperature warning signal when the temperature of the battery is higher than a preset temperature threshold.

7. A battery performance test hazard warning method, characterized in that: The battery performance test hazard warning method includes: After starting to perform a performance test on the batteries in the environmental chamber, extracting gas from the environmental chamber through a smoke pump, wherein a smoke inlet of the smoke pump is disposed at the top of the interior of the environmental chamber; detecting whether smoke exists in the gas by a smoke sensor connected to the smoke pump; When smoke exists in the gas, the alarm sends out a smoke warning signal.

8. The battery performance test hazard warning method according to claim 7, wherein: The two ends of the smoke pump are respectively connected to the smoke inlet and the smoke sensor through pipelines; The length of the pipeline is greater than a preset length threshold.

9. The battery performance test hazard warning method according to claim 8, characterized in that: The method further includes: The water vapor in the gas is filtered through a filter, wherein the filter is arranged on the pipeline between the smoke inlet and the smoke pump.

10. The battery performance test hazard warning method according to claim 9, wherein: The method further includes: Detecting the flow rate of the gas through a flow sensor, and issuing a hazard warning system failure warning when detecting that the flow rate of the gas is less than a preset flow threshold; Wherein, the flow sensor is arranged on the pipeline between the smoke inlet and the smoke pump.

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