Energy storage battery passive safety protection device, method, equipment, storage medium and program product

Abstract

The present application relates to a passive safety protection device, method, equipment, storage medium and program product for energy storage batteries. The device comprises: a battery compartment for placing energy storage batteries; a circulating air duct, both ends of which are connected to the battery compartment; an inert gas generator, which is connected to the circulating air duct and is used to fill the inert gas into the battery compartment through the circulating air duct; a circulating fan, which is arranged in the circulating air duct and is used to drive the inert gas to circulate in the circulating air duct and the battery compartment. The use of this method can reduce the safety risks of energy storage batteries.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a passive safety protection device, method, equipment, storage medium and program product for energy storage batteries. Background Art

[0002] With the rapid development of new energy technologies, the production and sales of lithium-ion batteries are increasing, and more and more lithium-ion batteries are entering their service life or even retirement period. The cascade utilization of power batteries has become a key task that must be solved by my country's lithium battery industry. Energy storage power stations are a major scenario for the cascade utilization of power batteries. However, the current application of cascade utilization batteries in my country's energy storage field is still relatively limited. The main reason is that lithium-ion batteries have relatively high safety risks and are prone to thermal runaway and spontaneous combustion. And as the service time of the battery increases, the risk of thermal runaway of the battery increases significantly.

[0003] In traditional technology, active safety protection is usually adopted, using big data and algorithm models to form a strict monitoring network to provide early warning and processing before the battery catches fire or spontaneous combustion. At the same time, energy storage batteries are equipped with fire-fighting equipment as a passive protection measure.

[0004] However, the battery fire and spontaneous combustion process is usually very rapid, and the temperature can rise by several hundred degrees in just a dozen seconds. Active safety protection methods are usually difficult to accurately identify and respond to in such a short time, resulting in a high probability of risk occurrence. Passive protection methods can only control the scope of risk occurrence as much as possible and reduce losses after the risk occurs, but cannot prevent the risk from occurring. In other words, traditional safety protection methods still have high safety risks. Summary of the invention

[0005] Based on this, it is necessary to provide a passive safety protection device, method, equipment, storage medium and program product for energy storage batteries that can reduce the safety risks of energy storage batteries in response to the above technical problems.

[0006] In a first aspect, the present application provides a passive safety protection device for an energy storage battery, the device comprising:

[0007] A battery compartment, used to place energy storage batteries;

[0008] A circulating air duct, both ends of which are connected to the battery compartment;

[0009] An inert gas generator is connected to the circulating air duct and is used to charge the inert gas into the battery compartment through the circulating air duct;

[0010] The circulation fan is arranged in the circulation air duct and is used to drive the inert gas to circulate in the circulation air duct and the battery compartment.

[0011] In one of the embodiments, the device further includes an environmental parameter detector, which is used to issue a safety alarm when it detects that the environmental parameter value in the battery compartment exceeds a preset environmental parameter value range.

[0012] In one embodiment, the environmental parameter value includes at least one of an inert gas concentration value, an ambient temperature value, and an ambient pressure value, and the environmental parameter detector includes at least one of an inert gas detector, an ambient temperature detector, and an ambient pressure detector, wherein:

[0013] An inert gas detector is used to issue a safety alarm when the inert gas concentration in the battery compartment is detected to be lower than a preset concentration threshold;

[0014] An ambient temperature detector is used to issue a safety alarm when the ambient temperature value in the battery compartment is detected to be higher than a preset ambient temperature threshold;

[0015] The ambient air pressure detector is used to issue a safety alarm when it detects that the ambient air pressure value in the battery compartment is lower than a preset first ambient air pressure threshold or higher than a preset second ambient air pressure threshold, wherein the first ambient air pressure threshold is lower than the second ambient air pressure threshold.

[0016] In one of the embodiments, the device includes multiple inert gas detection groups, each inert gas detection group includes at least one inert gas detector, the distances between the inert gas detectors belonging to the same inert gas detection group and the gas release holes of the inert gas generator are equal, and the distances between the inert gas detectors belonging to different inert gas detection groups and the gas release holes of the inert gas generator are not equal; the concentration threshold corresponding to the inert gas detector is negatively correlated with the distance between the inert gas detector and the gas release hole.

[0017] In one of the embodiments, the device further comprises a temperature regulating device, and the temperature regulating device is used to regulate the gas temperature value of the gas in the circulating air duct.

[0018] In one of the embodiments, the device further includes a pressure relief valve, which is disposed on the compartment body of the battery compartment and is used to discharge the gas in the battery compartment when the pressure relief valve is in an open state.

[0019] In a second aspect, the present application further provides a passive safety protection method for an energy storage battery, which is applied to a passive safety protection device for an energy storage battery. The passive safety protection device for an energy storage battery includes a battery compartment, a circulating air duct, an inert gas generator, and a circulating fan. The inert gas generator is connected to the circulating air duct, both ends of the circulating air duct are connected to the battery compartment, and the circulating fan is arranged in the circulating air duct. The method includes:

[0020] When it is determined that there is an energy storage battery in the battery compartment, the inert gas is filled into the battery compartment through the circulating air duct by the inert gas generator;

[0021] The inert gas is driven to circulate in the circulating air duct and the battery compartment by a circulating fan.

[0022] In a third aspect, the present application further provides a computer device, which is applied to a passive safety protection device for an energy storage battery. The passive safety protection device for an energy storage battery includes a battery compartment, a circulating air duct, an inert gas generator, and a circulating fan. The inert gas generator is connected to the circulating air duct. Both ends of the circulating air duct are connected to the battery compartment. The circulating fan is arranged in the circulating air duct. The computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are implemented:

[0023] When it is determined that there is an energy storage battery in the battery compartment, the inert gas is filled into the battery compartment through the circulating air duct by the inert gas generator;

[0024] The inert gas is driven to circulate in the circulating air duct and the battery compartment by a circulating fan.

[0025] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which is applied to a passive safety protection device for an energy storage battery, wherein the passive safety protection device for an energy storage battery comprises a battery compartment, a circulating air duct, an inert gas generator, and a circulating fan, wherein the inert gas generator is connected to the circulating air duct, both ends of the circulating air duct are connected to the battery compartment, and the circulating fan is arranged in the circulating air duct, and when the computer program is executed by a processor, the following steps are implemented:

[0026] When it is determined that there is an energy storage battery in the battery compartment, the inert gas is filled into the battery compartment through the circulating air duct by the inert gas generator;

[0027] The inert gas is driven to circulate in the circulating air duct and the battery compartment by a circulating fan.

[0028] In a fifth aspect, the present application further provides a computer program product, including a computer program, which is applied to a passive safety protection device for an energy storage battery. The passive safety protection device for an energy storage battery includes a battery compartment, a circulating air duct, an inert gas generator, and a circulating fan. The inert gas generator is connected to the circulating air duct, and both ends of the circulating air duct are connected to the battery compartment. The circulating fan is arranged in the circulating air duct. When the computer program is executed by a processor, the following steps are implemented:

[0029] When it is determined that there is an energy storage battery in the battery compartment, the inert gas is filled into the battery compartment through the circulating air duct by the inert gas generator;

[0030] The inert gas is driven to circulate in the circulating air duct and the battery compartment by a circulating fan.

[0031] The above-mentioned energy storage battery passive safety protection device, method, equipment, storage medium and program product, on the one hand, through the inert gas generator, fills the circulating air duct connected to the inert gas generator with inert gas, and the inert gas entering the circulating air duct enters the battery compartment along the circulating air duct, so that the energy storage battery placed in the battery compartment is in an inert gas environment, so that even if the temperature of the energy storage battery reaches the ignition point, the energy storage battery will not catch fire or self-ignite because the inert gas cannot burn, so the risk of fire, self-ignition and the like can be prevented from the source, and the harm and loss to the energy storage battery itself and other objects and personnel can be effectively reduced; on the other hand, the circulating fan drives the circulating flow of the inert gas in the battery compartment and the circulating air duct, so as to improve the uniformity of the distribution of the inert gas in the battery compartment, and avoid the safety hazards existing in the local space area due to the uneven distribution of the inert gas. In this way, since the risk of fire of the energy storage battery is low, the service life of the battery can be extended, and the full cascade utilization of the old battery is realized, which is conducive to promoting the recycling of batteries and the development of the energy storage industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of component modules of a passive safety protection device for an energy storage battery in one embodiment;

[0034] Figure 2 A schematic diagram of component modules of an energy storage battery passive safety protection device provided with an environmental parameter detector in one embodiment;

[0035] Figure 3 A schematic diagram of component modules of a passive safety protection device for an energy storage battery provided with multiple inert gas detection groups in one embodiment;

[0036] Figure 4 A schematic diagram of a component module of a passive safety protection device for an energy storage battery provided with a temperature regulating device in one embodiment;

[0037] Figure 5 A schematic diagram of the components of a passive safety protection device for an energy storage battery provided with a pressure relief valve in one embodiment;

[0038] Figure 6A schematic diagram of a process flow of a passive safety protection method for an energy storage battery in one embodiment;

[0039] Figure 7 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] It is understood that the terms "first", "second", etc. used in the present invention may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor without departing from the scope of the present invention. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0043] It can be understood that the “connection” in the following embodiments should be understood as “connected”, “communication connection”, etc., if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0044] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least part of an element” means part or all of an element.

[0045] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0046] In an exemplary embodiment, Figure 1As shown, a passive safety protection device for an energy storage battery is provided, which includes a battery compartment 102 , an inert gas generator 104 , a circulating air duct 106 and a circulating fan 108 .

[0047] It should be noted that my country currently ranks first in the world in terms of production and sales of lithium-ion batteries. As of now, the number of new energy vehicles in service in China has reached 17 million, and a large number of lithium-ion batteries have entered the service period or even the retirement period. The cascade utilization of power batteries has become a key task that must be solved by my country's lithium battery industry. Energy storage power stations are a major scenario for the cascade utilization of power batteries. Disassembling new energy vehicle power batteries that cannot meet high energy density application scenarios and using them in energy storage scenarios with relatively low energy density requirements is a major means of realizing the cascade utilization of batteries. However, the current application of cascade utilization batteries in my country's energy storage field is still relatively limited. The main reason is that the safety hazards of lithium-ion batteries are relatively high. Under the current material structure system, lithium-ion batteries are prone to thermal runaway and spontaneous combustion, causing fires. And as the service time of the battery increases, the risk of thermal runaway of the battery increases.

[0048] In traditional technology, active safety protection is usually combined with fire-fighting equipment as a passive protection method. Active safety mainly uses sensors to deploy around the energy storage battery, and uses big data and algorithm models to form a strict monitoring network to promptly warn and handle the battery before it catches fire or spontaneously combusts, so as to avoid serious consequences. However, since the battery's ignition and spontaneous combustion process is usually rapid, the temperature can rise by 100 degrees in just a dozen seconds. Therefore, the technical difficulty of active protection is relatively high. From the perspective of potential safety hazards that need to be protected, the current active safety technology for energy storage batteries generally has problems such as low accuracy, high false alarm rate, and long delay time, making it difficult to achieve high-precision control. Passive protection methods can only control the scope of risk as much as possible and reduce losses after the risk occurs, but cannot prevent the risk from occurring. Once the battery catches fire and burns, it will cause irreversible damage to the entire electrical system.

[0049] Among them, the battery compartment refers to a compartment structure for placing energy storage batteries. In a feasible implementation, the battery compartment is a sealable battery compartment. The sealable battery compartment refers to a battery compartment that can be sealed. It can be understood that the compartment body of the battery compartment can be provided with doors, pipe openings, passages and other openings that are connected to the outside. By arranging an opening and closing control device at the opening, such as a switch, gate, valve, etc., the sealing state of the battery compartment can be regulated.

[0050] An inert gas generator refers to a device that can transmit inert gas to the outside. The inert gas generator is connected to the battery compartment through a circulating air duct, so that the inert gas can be filled into the battery compartment. The number of inert gas generators can be one or more. Inert gas is usually compressed and stored in the inert gas generator. The compressed inert gas can be liquid. When the compressed inert gas is released, it usually has properties such as high pressure, low temperature and inertness. Environmental parameters such as ambient air pressure, ambient temperature and gas composition in the battery compartment can be regulated. As an example, the inert gas can be nitrogen. The inert gas generator may be provided with at least one of an inert gas storage unit, an inert gas preparation unit and an inert gas acquisition unit, wherein the inert gas storage unit has the function of storing inert gas, and the inert gas generator can transfer the inert gas stored in the inert gas storage unit to the battery compartment; the inert gas preparation unit has the function of preparing inert gas, and the inert gas generator can transfer the inert gas prepared by the inert gas preparation unit to the battery compartment; the inert gas acquisition unit has the function of transmitting inert gas, and the inert gas generator can obtain inert gas from other inert gas preparation devices through the inert gas acquisition unit, thereby transferring the obtained inert gas to the battery compartment. It is understandable that during the use of the energy storage battery, the inert gas generator can be turned on all the time, turned on on a scheduled basis, or turned on in a triggered manner. That is, before the energy storage battery is used, the inert gas generator can be turned on first to adjust the atmosphere in the battery compartment to the required inert gas environment, and then the energy storage battery can be enabled. After the energy storage battery is enabled, the inert gas generator can be turned off or not. After turning off the inert gas generator, the inert gas generator can also be turned on in a scheduled manner or in a triggered manner.

[0051] The circulating air duct refers to a channel for gas circulation. The two ends of the circulating air duct are open, and the gas can flow from one end opening to the other end opening. The two end openings of the circulating air duct in this embodiment are both connected to the battery compartment. By connecting the two end openings to the battery compartment, the circulating air duct and the battery compartment can be connected to form a gas circulation passage, that is, the gas in the battery compartment can enter the circulating air duct from one end of the circulating air duct, pass through the circulating air duct, and then flow out of the circulating air duct from the other end of the circulating air duct and flow into the battery compartment, and thus circulate continuously. In this embodiment, the inert gas generator is connected to the circulating air duct, and the circulating air duct is connected to the battery compartment. Through the circulating air duct, the inert gas filled by the inert gas generator can be transported to the battery compartment. In this way, the circulation channel can provide a certain buffer period and environmental adaptation period for the inert gas, so as to avoid the low-temperature and high-pressure inert gas just released from the inert gas generator from directly contacting the energy storage battery in the battery compartment, and maintain the stability of the environment in which the energy storage battery is located.

[0052] A circulation fan is provided in the circulation duct, and the circulation fan is used to drive the circulation flow of the inert gas in the circulation duct and the battery compartment. The wind speed of the circulation fan can be adjusted according to actual needs. For example, when the inert gas is initially charged, a higher wind speed can be set to quickly build an inert atmosphere environment in the battery compartment; during the normal operation of the energy storage battery, a lower wind speed can be set to maintain gas flow while saving resources; when the energy storage battery has an abnormal condition, a higher wind speed can be set to ensure a higher inert gas concentration around the energy storage battery, and the energy storage battery can be quickly cooled; when the energy storage battery has an abnormal condition, the inert gas generator can be turned on and a higher wind speed can be set to quickly charge the battery compartment with low-temperature inert gas, and the operating temperature value in the battery compartment can be quickly reduced to -15℃~0℃, so as to freeze various reaction components in the energy storage battery, thereby inhibiting further heating of the energy storage battery. On the one hand, by driving the inert gas to circulate, it is helpful to improve the uniformity of the distribution of the inert gas and avoid the risk of misjudgment and safety risks caused by low local inert gas concentration; on the other hand, even if the inert gas generator is not started, the gas in the battery compartment can continue to circulate under the drive of the circulating fan, taking away the heat generated during the normal operation of the energy storage battery and reducing the risk of abnormal high temperature of the energy storage battery.

[0053] As an example, the energy storage battery that needs to be protected can be placed in the battery compartment by a user, a robot, a robotic arm or a conveyor belt; further, after detecting that the energy storage battery is placed in the battery compartment, the inert gas generator and the circulating fan can be triggered to be enabled, or the inert gas generator and the circulating fan can be enabled when needed by a user, a robot or a terminal device; when the inert gas generator is enabled, it can release inert gas into the circulating air duct, and the inert gas is filled into the battery compartment through the circulating air duct to create an inert atmosphere environment for the energy storage battery. In this way, when the external environment temperature is too high or the energy storage battery is overloaded due to load In the case of excessive temperature and rising temperature, the low-temperature inert gas can effectively suppress the increase of temperature inside and outside the energy storage battery, thereby reducing the damage caused by high temperature to the energy storage battery, and even if the energy storage battery encounters abnormal conditions such as short circuit, overcurrent, high temperature, etc. during operation, due to the inert gas's inactive chemical properties and its difficulty in reacting with other substances, it can effectively prevent the energy storage battery from spontaneous combustion or fire; synchronously, when the circulating fan is enabled, it can drive the gas flow in the circulating air duct and the battery compartment. Driven by the circulating fan, the inert gas in the circulating air duct and the battery compartment circulates in the circulating air duct and the battery compartment and is evenly distributed in various spatial areas in the battery compartment.

[0054] As an example, after the energy storage battery is placed in the battery compartment and before the energy storage system starts working, the inert gas generator can be turned on first, and the circulating fan can be turned on at the same time. By filling the battery compartment with inert gas and driving the inert gas to circulate, the environmental parameters in the battery compartment are regulated. When it is detected that the environmental parameter value in the battery compartment meets the preset working conditions, the transmission channel between the inert gas generator and the circulating air duct can be closed, the inert gas generator is suspended from passing inert gas into the circulating air duct, and the internal space formed by the battery compartment and the circulating air duct is in a closed state; then, the energy storage system can be enabled, and the energy storage battery starts working. During the operation of the energy storage battery, the circulating fan can keep running to take away the heat generated during the normal operation of the energy storage battery, help the energy storage battery dissipate heat, and reduce the risk of abnormal high temperature of the energy storage battery. Moreover, if the electrolyte in the energy storage battery decomposes or undergoes other reactions to produce other gases, the circulating fan can also drive the gas to circulate to take away or disperse the other gases, so as to avoid the accumulation of other gases and the risk of fire caused by excessive concentration.

[0055] In the above-mentioned passive safety protection device for energy storage batteries, on the one hand, an inert gas generator is used to fill the circulating air duct connected to the inert gas generator with inert gas, and the inert gas entering the circulating air duct enters the battery compartment along the circulating air duct, so that the energy storage battery placed in the battery compartment is in an inert gas environment. In this way, even if the temperature of the energy storage battery reaches the ignition point, the energy storage battery will not catch fire or self-ignite because the inert gas cannot burn. Therefore, the risk of fire and self-ignition can be prevented from the source, effectively reducing the harm and loss to the energy storage battery itself and other objects and personnel; on the other hand, the circulating fan drives the circulating flow of the inert gas in the battery compartment and the circulating air duct, thereby improving the uniformity of the distribution of the inert gas in the battery compartment and avoiding the safety hazards caused by the uneven distribution of the inert gas in the local space area. In this way, since the risk of fire of the energy storage battery is low, the service life of the battery can be extended, and the full cascade utilization of the old battery is realized, which is conducive to promoting the recycling of batteries and the development of the energy storage industry.

[0056] In an exemplary embodiment, Figure 2 As shown, the energy storage battery passive safety protection device also includes an environmental parameter detector 110 .

[0057] The environmental parameter detector refers to a device for monitoring environmental parameters. The environmental parameter detector can monitor whether the environmental parameter value of the environment in the battery compartment is within a preset environmental parameter value range, and can also issue a safety alarm when the environmental parameter value is not within the preset environmental parameter value range. The number of environmental parameter detectors can be one or more. In a feasible embodiment, the environmental parameter detector may include a detector body and a data acquisition device. Exemplarily, the data acquisition device may be a sensor; wherein the data acquisition device is arranged in the battery compartment, and is used to collect environmental parameter values ​​of the environment in the battery compartment. The data acquisition device is connected to the detector body in a wired or wireless manner to communicate with the detector body, thereby sending the collected environmental parameter values ​​to the detector body; the detector body may be arranged in the battery compartment or outside the battery compartment, and is used to detect whether the environmental parameter value sent by the data acquisition device is within a preset environmental parameter value range, and when it is detected that the environmental parameter value is not within the preset environmental parameter value range, a security alarm is issued. Exemplarily, the detector body may be a management terminal arranged outside the battery compartment or a user terminal of the management personnel; in a feasible embodiment, the environmental parameter detector may also include an alarm. When the detector body detects that the environmental parameter value is not within the preset environmental parameter value range, the alarm sends an alarm instruction to the alarm. The alarm issues a security alarm in response to the alarm instruction to attract the attention of relevant personnel and deal with possible risks in a timely manner.

[0058] As an example, when the energy storage battery starts working, the environmental parameter detector can be turned on simultaneously to monitor the environmental parameters in the battery compartment. When the energy storage battery is working normally, the energy storage battery in the battery compartment can work normally under the protection of an inert atmosphere. If the energy storage battery has an abnormal condition, such as a short circuit, high temperature, etc., it may cause changes in the ambient temperature and ambient air pressure in the battery compartment, and other gases may be generated, changing the concentration of the inert gas in the battery compartment. Therefore, when the environmental parameter value in the battery compartment monitored by the environmental parameter detector exceeds the preset environmental parameter value range, a safety alarm is issued.

[0059] In this embodiment, the environmental conditions in the battery compartment can be monitored by an environmental parameter detector. When the environmental parameter value in the battery compartment is detected to be beyond the preset environmental parameter value range, a safety alarm is issued so that relevant objects can take timely action to reduce the safety risks of the energy storage battery.

[0060] In an exemplary embodiment, the environmental parameter value includes at least one of an inert gas concentration value, an ambient temperature value, and an ambient pressure value, and the environmental parameter detector includes at least one of an inert gas detector, an ambient temperature detector, and an ambient pressure detector, wherein:

[0061] An inert gas detector refers to a device capable of detecting the inert gas concentration value in an environment. The environmental parameter value includes the inert gas concentration value. The environmental parameter value range includes a concentration threshold value greater than or equal to a preset concentration threshold value. As an example, the inert gas detector can collect a certain amount of ambient gas, and then detect the amount of inert gas in the ambient gas, and determine the concentration of the inert gas in the environment based on the ratio of the amount of inert gas to the amount of ambient gas. If the detected inert gas concentration value is lower than the preset concentration threshold, it means that the atmosphere in the battery compartment may be abnormal. For example, the energy storage battery produces other gases due to electrolyte decomposition, chemical reactions, etc., the air tightness of the battery compartment is reduced, etc., the energy storage battery electrolyte decomposition, chemical reactions, etc., the surface energy storage battery fails, which will have an adverse effect on the normal operation of the energy storage system and the service life of the energy storage battery. The reduced air tightness will cause the inert gas to leak out of the battery compartment and the air outside the battery compartment to enter. The entry of air will increase the risk of fire in the battery compartment. Therefore, a safety alarm needs to be issued to remind relevant personnel to deal with the abnormal atmosphere in time; if the detected inert gas concentration value is greater than or equal to the preset concentration threshold, it means that the atmosphere in the battery compartment is normal and no safety alarm is required.

[0062] In a feasible implementation, the battery compartment may be a rectangular parallelepiped structure, and an inert gas detector may be provided at each top corner and bottom corner of the battery compartment, so as to improve the comprehensiveness of the inert gas monitoring in the battery compartment.

[0063] The ambient temperature detector refers to a device capable of detecting ambient temperature, and the ambient parameter value includes an ambient temperature value, and the ambient parameter value range includes less than or equal to a preset ambient temperature threshold, wherein the ambient temperature threshold can be determined according to actual conditions and test results, such as 15°C, 20°C, 25°C, etc., and can also be adjusted according to the external ambient temperature, such as 15°C in winter, 20°C in spring and autumn, and 25°C in summer, etc., which is not limited in this embodiment. In a feasible implementation, the ambient temperature detector includes an infrared temperature detector. As an example, the ambient temperature detector can collect the ambient temperature value of the environment in the battery compartment, and compare the numerical value relationship between the ambient temperature value and the ambient temperature threshold. If the ambient temperature value is detected to be higher than the preset ambient temperature threshold, it means that the battery compartment may have an abnormal temperature, such as the thermal insulation performance of the battery compartment is reduced, the temperature of the energy storage battery is abnormally increased, etc., so a safety alarm needs to be issued to remind relevant personnel to deal with the abnormal temperature in time; if the ambient temperature value is detected to be less than or equal to the preset ambient temperature threshold, it means that the ambient temperature in the battery compartment is normal and no safety alarm is required.

[0064] In one feasible implementation, the ambient temperature detector can be set at the geometric center of the space area in the battery compartment. If the temperature detector cannot be set at the geometric center, it can be set at the position closest to the geometric center to improve the accuracy of ambient temperature monitoring.

[0065] An ambient pressure detector refers to a device capable of detecting ambient pressure, wherein the ambient parameter value includes an ambient pressure value, wherein the ambient parameter value range includes a value greater than or equal to a preset first ambient pressure threshold and less than or equal to a preset second ambient pressure threshold, wherein the first ambient pressure threshold is less than the second ambient pressure threshold, and the first ambient pressure threshold and the second ambient pressure threshold can be determined based on actual conditions and test results, etc. For example, the first ambient pressure threshold can be 1.1 MPa, and the second ambient pressure threshold can be 2.0 MPa, and this embodiment does not impose any restrictions on this. As an example, the inert gas detector can collect the ambient air pressure value in the battery compartment. If the detected ambient air pressure value is lower than the preset first ambient air pressure threshold, it means that a low pressure abnormality may have occurred in the battery compartment, such as reduced air tightness of the battery compartment. Reduced air tightness will cause the inert gas to leak out of the battery compartment and the air outside the battery compartment to enter. The entry of air will increase the risk of fire in the battery compartment. Therefore, a safety alarm needs to be issued to remind relevant personnel to deal with the low pressure abnormality in time; if the detected ambient air pressure value is higher than the preset second ambient air pressure threshold, it means that a high pressure abnormality may have occurred in the battery compartment. When the battery compartment is in a sealed state, if the air pressure is too high, it may cause an explosion. Therefore, a safety alarm needs to be issued to remind relevant personnel to deal with the high pressure abnormality in time; if the detected ambient air pressure value is greater than or equal to the preset first ambient air pressure threshold and less than or equal to the preset second ambient air pressure threshold, it means that the ambient air pressure in the battery compartment is normal and no safety alarm is required.

[0066] In one feasible implementation, the ambient air pressure detector can be set at the geometric center of the top area of ​​the battery compartment. If the ambient air pressure detector cannot be set at the geometric center, it can be set at the position closest to the geometric center to improve the accuracy of ambient air pressure monitoring.

[0067] In this embodiment, by constructing a three-level alarm mechanism of atmosphere, temperature, and air pressure, the comprehensiveness and accuracy of safety risk monitoring in the battery compartment can be improved, and the timeliness of risk detection can be improved, thereby shortening the time when abnormalities occur in the energy storage battery and reducing the damage to the energy storage battery caused by the abnormality.

[0068] In an exemplary embodiment, the passive safety protection device of the energy storage battery includes multiple inert gas detection groups, each inert gas detection group includes at least one inert gas detector, the distances between the inert gas detectors belonging to the same inert gas detection group and the gas release holes of the inert gas generator are equal, and the distances between the inert gas detectors belonging to different inert gas detection groups and the gas release holes of the inert gas generator are not equal; the concentration threshold corresponding to the inert gas detector is negatively correlated with the distance between the inert gas detector and the gas release hole.

[0069] It should be noted that the energy storage power station has a high demand for energy storage power. Therefore, the battery compartment provided in this embodiment for placing energy storage batteries has a large space inside the compartment, which can be several meters in length, width and height. The more completely the inert gas fills the space inside the compartment, the better the risk control effect. However, when energy storage batteries are placed in the battery compartment, the flow of inert gas will be hindered. The farther the space area is from the gas release hole of the inert gas generator, the more difficult it is to be filled with inert gas, which is prone to safety hazards.

[0070] The gas release hole is the outlet for the inert gas in the inert gas generator, and the gas release hole is arranged in the battery compartment, so that the inert gas in the inert gas generator can be filled into the battery compartment. The number of gas release holes of each inert gas generator can be one or more, that is, the inert gas in each inert gas generator can flow into the battery compartment from one position or multiple positions in the battery compartment.

[0071] Therefore, in order to achieve comprehensive monitoring of the atmosphere in the battery compartment, multiple groups of inert gas detectors can be set at positions with different distances from the gas release hole, and the inert gas detectors belonging to the same group can be evenly distributed at various positions with the same distance from the gas release hole. For example, the distance between the first group of inert gas detectors and the gas release hole is D1, the distance between the second group of inert gas detectors and the gas release hole is D2, ..., the distance between the nth group of inert gas detectors and the gas release hole is Dn, and a circle O1 can be drawn with the gas release hole as the center and D1 as the radius, and the first group of inert gas detectors can be set on the circumference of O1. Similarly, the position of each group of inert gas detectors can be determined.

[0072] It should be noted that the farther the space area is from the gas release hole of the inert gas generator, the harder it is for the inert gas to flow through, and the harder it is to be filled with inert gas. Therefore, under normal circumstances, the inert gas concentration in the space area farther from the gas release hole will be lower than the inert gas concentration in the space area closer to the gas release hole, and it is not caused by an abnormality. If it is based on an inert gas detector that is closer, a higher concentration threshold will be set. For an inert gas detector that is farther away, it is also easy to fall below this concentration threshold under normal operation, resulting in an erroneous triggering of the alarm; and if it is based on an inert gas detector that is farther away, a lower concentration threshold will be set. For an inert gas detector that is closer, when it falls below this concentration threshold, the abnormality may have occurred for some time, so the abnormality cannot be discovered in time.

[0073] In one possible implementation, referring to Figure 3 , two groups of inert gas detectors are arranged in the battery compartment, the first group of inert gas detectors 10611 is arranged at the top of the battery compartment, and the distance between the inert gas generator and the gas release hole is relatively close, and the second group of inert gas detectors 10612 is arranged at the top of the battery compartment, and the distance between the inert gas generator and the gas release hole is relatively far. In this case, the concentration threshold of the first group of inert gas detectors 10611 can be set to 90%, and the concentration threshold of the second group of inert gas detectors 10612 can be set to 80%.

[0074] In this embodiment, by placing inert gas detectors at different distances from the gas release hole, the comprehensiveness of monitoring the atmosphere in the battery compartment can be improved, thereby reducing safety hazards. By setting the concentration threshold corresponding to each inert gas detector based on the distance between the inert gas detector and the gas release hole, the accuracy of identifying abnormal atmosphere can be improved, and the probability of false alarm triggering can be reduced while ensuring that the abnormal atmosphere can be identified in time.

[0075] In an exemplary embodiment, referring to Figure 4 The energy storage battery passive safety protection device also includes a temperature regulating device 112, which includes at least one of a heating device and a refrigeration device. When the inert gas temperature is low, for example, the temperature is lower than -10°C, the refrigeration device may not be required. The temperature regulating device is arranged on the circulating air duct to adjust the gas temperature value of the gas in the circulating air duct.

[0076] It should be noted that, influenced by the electrochemical system and material properties of power batteries, energy storage batteries usually have an appropriate operating temperature window. For example, the appropriate operating temperature window of many lithium batteries is currently 25-30°C. When the operating temperature of the energy storage battery is lower than the appropriate operating temperature window range, the working performance deteriorates, and the endurance and capacity are reduced; when the operating temperature of the energy storage battery is too high, it is easy to cause damage to components and cause safety accidents.

[0077] As an example, the temperature regulating device can be arranged in the circulating air duct, on the downwind side of the inert gas release port, wherein the inert gas release port refers to the connection between the conveying pipe between the inert gas generator and the circulating air duct and the circulating air duct. In this way, the inert gas released from the inert gas generator can be temperature-regulated by the temperature regulating device before entering the battery compartment.

[0078] In this embodiment, a constant temperature atmosphere environment is constructed outside the battery compartment through a temperature regulating device and a circulating air duct, which can effectively improve the temperature stability inside the battery compartment, so that the energy storage batteries in the battery compartment always operate in a suitable temperature environment, optimize the battery working performance, and extend the life of the battery pack.

[0079] In an exemplary embodiment, referring to Figure 5 The energy storage battery passive safety protection device also includes a pressure relief valve 114, which is arranged on the battery compartment body and is used to discharge the gas in the battery compartment when it is in an open state.

[0080] Among them, the pressure relief valve refers to a valve that can transmit the gas in the battery compartment to the outside in a one-way manner. The number of pressure relief valves can be one or more. After the battery compartment is connected to the external environment and then re-sealed, the pressure relief valve can be opened first to discharge the gas in the battery compartment, and then the pressure relief valve can be closed. After closing the pressure relief valve, the inert gas generator can be opened to fill the battery compartment with inert gas. When the pressure in the battery compartment is too high and there is a risk of explosion, the pressure relief valve can be opened to reduce the air pressure in the battery compartment.

[0081] In a feasible implementation, the pressure relief valve may be connected to a vacuum pump, so that each time the battery compartment is connected to the external environment and then resealed, the gas in the battery compartment may be pumped out by the vacuum pump.

[0082] In one feasible implementation, the pressure relief valve can be connected to the exhaust gas treatment device. In this way, when the energy storage batteries in the battery compartment generate exhaust gas due to electrolyte decomposition, chemical reactions, etc., resulting in excessive pressure in the battery compartment and possible explosion risk, the exhaust gas can be transported to the exhaust gas treatment device through the pressure relief valve, which can not only reduce the air pressure in the battery compartment and reduce the explosion risk, but also avoid environmental pollution caused by exhaust gas emissions.

[0083] In an exemplary embodiment, passive safety protection of energy storage batteries includes: first, opening the gas flow control switch between the inert gas generator and the battery compartment, so that the low-temperature inert gas fills the entire safety protection system, and the air in the system is discharged out of the compartment through the pressure relief valve; after each inert gas detector detects that the inert gas concentration in the battery compartment reaches more than 95%, the pressure relief valve and the inert gas flow switch are controlled to close, and then the system enters a normal working state. In the normal operation of the system, the inert gas detectors arranged at the eight corners of the battery compartment are started and set with alarm thresholds. The alarm thresholds of the inert gas detectors arranged at the four corners of the top floor are set to 90%, and the alarm thresholds of the inert gas detectors arranged at the four corners of the bottom floor are set to 80%. When the alarm threshold is lower than the inert gas detector, the first safety alarm is issued. At the same time, the ambient temperature detector in the center of the battery compartment and the ambient air pressure detector on the top are started. The ambient temperature detector is set with an alarm threshold of 30°C. When the ambient temperature is higher than 30°C, the ambient temperature detector issues the first safety alarm. The ambient air pressure detector is set with a low pressure alarm threshold of 1.1Mpa and a high pressure alarm threshold of 2MPa. When the ambient air pressure in the battery compartment is lower than 1.1Mpa or higher than 2Mpa, the ambient air pressure detector issues the first safety alarm. When the ambient temperature detector issues the first safety alarm, the inert gas generator, the circulation fan, and the gas flow control switch between the inert gas generator and the battery compartment are all turned on to quickly control the ambient temperature value in the battery compartment below -10°C.

[0084] In an exemplary embodiment, referring to Figure 6 , a method for passive safety protection of energy storage batteries is provided. This embodiment uses the method applied to a terminal as an example, wherein the terminal may be, but is not limited to, a personal computer, a laptop computer, a smart phone, a tablet computer, an Internet of Things device, and a portable wearable device. The Internet of Things device may be a smart speaker, a smart TV, a smart air conditioner, a smart vehicle-mounted device, a projection device, etc. The portable wearable device may be a smart watch, a smart bracelet, a head-mounted device, etc. The head-mounted device may be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. It can be understood that the method may also be applied to a server, and may also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. In this embodiment, the terminal is applied to a passive safety protection device for an energy storage battery, and the passive safety protection device for an energy storage battery includes a battery compartment, a circulating air duct, an inert gas generator, and a circulating fan. The inert gas generator is connected to the circulating air duct, and both ends of the circulating air duct are connected to the battery compartment. The circulating fan is arranged in the circulating air duct. The method includes steps S10-S20, wherein:

[0085] Step S10, when it is determined that an energy storage battery is placed in the battery compartment, an inert gas is filled into the battery compartment through a circulating air duct by an inert gas generator.

[0086] It should be noted that the energy storage battery passive safety protection method provided in this embodiment is used to control the above-mentioned energy storage battery passive safety protection device to perform passive safety protection on the energy storage battery.

[0087] S20, driving the inert gas to circulate in the circulation duct and the battery compartment through the circulation fan.

[0088] In this embodiment, on the one hand, an inert gas generator is used to fill the circulating air duct connected to the inert gas generator with inert gas, and the inert gas entering the circulating air duct enters the battery compartment along the circulating air duct, so that the energy storage battery placed in the battery compartment is in an inert gas environment. In this way, even if the temperature of the energy storage battery reaches the ignition point, the energy storage battery will not catch fire or self-ignite because the inert gas cannot burn. Therefore, the risk of fire and self-ignition can be prevented from the source, effectively reducing the harm and loss to the energy storage battery itself and other objects and personnel; on the other hand, the circulating fan drives the inert gas in the battery compartment and the circulating air duct to circulate, thereby improving the uniformity of the distribution of the inert gas in the battery compartment and avoiding the safety hazards caused by the uneven distribution of the inert gas in the local space area. In this way, since the risk of fire of the energy storage battery is low, the service life of the battery can be extended, and the full cascade utilization of the old battery is achieved, which is conducive to promoting the recycling of batteries and the development of the energy storage industry.

[0089] In an exemplary embodiment, the energy storage battery passive safety protection device further includes an environmental parameter detector, and the energy storage battery passive safety protection method further includes:

[0090] Through the environmental parameter detector, when the environmental parameter value in the battery compartment is detected to be beyond the preset environmental parameter value range, a safety alarm is issued.

[0091] In an exemplary embodiment, the environmental parameter value includes at least one of an inert gas concentration value, an ambient temperature value, and an ambient pressure value, the environmental parameter detector includes at least one of an inert gas detector, an ambient temperature detector, and an ambient pressure detector, and the energy storage battery passive safety protection method further includes:

[0092] Through the inert gas detector, when the inert gas concentration in the battery compartment is detected to be lower than the preset concentration threshold, a safety alarm is issued;

[0093] Through the ambient temperature detector, when the ambient temperature value in the battery compartment is detected to be higher than the preset ambient temperature threshold, a safety alarm is issued;

[0094] Through the ambient pressure detector, when it is detected that the ambient pressure value in the battery compartment is lower than a preset first ambient pressure threshold or higher than a preset second ambient pressure threshold, a safety alarm is issued, wherein the first ambient pressure threshold is lower than the second ambient pressure threshold.

[0095] In an exemplary embodiment, the passive safety protection device of the energy storage battery includes multiple inert gas detection groups, each inert gas detection group includes at least one inert gas detector, the distances between the inert gas detectors belonging to the same inert gas detection group and the gas release holes of the inert gas generator are equal, and the distances between the inert gas detectors belonging to different inert gas detection groups and the gas release holes of the inert gas generator are not equal; the concentration threshold corresponding to the inert gas detector is negatively correlated with the distance between the inert gas detector and the gas release hole.

[0096] In an exemplary embodiment, the energy storage battery passive safety protection device further includes a temperature regulating device, and the energy storage battery passive safety protection method further includes:

[0097] The gas temperature value of the gas in the circulating air duct is adjusted by the temperature regulating device.

[0098] In an exemplary embodiment, the passive safety protection device for the energy storage battery further includes a pressure relief valve, which is disposed on the battery compartment body; the passive safety protection method for the energy storage battery further includes:

[0099] Release the gas in the battery compartment by opening the pressure relief valve.

[0100] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0101] Based on the same inventive concept, the embodiment of the present application also provides a computer device for implementing the above-mentioned energy storage battery passive safety protection method. The computer device can be a terminal, and its internal structure diagram can be as shown in Figure 7As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (Near Field Communication, NFC) or other technologies. When the computer program is executed by the processor, a passive safety protection method for an energy storage battery is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0102] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0103] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0104] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0105] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0106] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0107] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0108] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0109] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A passive safety protection device for energy storage batteries, characterized in that: The device comprises: A battery compartment, used to place energy storage batteries; A circulating air duct, both ends of which are connected to the battery compartment; an inert gas generator, connected to the circulating air duct, and used to charge the inert gas into the battery compartment through the circulating air duct; A circulation fan, disposed in the circulation air duct, for driving the inert gas to circulate in the circulation air duct and the battery compartment; A plurality of groups of inert gas detectors are arranged at positions in the battery compartment at different distances from the gas release hole, and the inert gas detectors belonging to the same group are evenly distributed at various positions at the same distance from the gas release hole; the inert gas detector is used to issue a safety alarm when it is detected that the inert gas concentration value in the battery compartment is lower than a preset concentration threshold, wherein the preset concentration threshold is negatively correlated with the distance between the inert gas detector and the gas release hole.

2. The device according to claim 1, characterized in that The device also includes an environmental parameter detector, which is used to issue a safety alarm when the environmental parameter value in the battery compartment is detected to be beyond a preset environmental parameter value range.

3. The device according to claim 2, characterized in that The environmental parameter value includes at least one of an environmental temperature value and an environmental pressure value, and the environmental parameter detector includes at least one of an environmental temperature detector and an environmental pressure detector, wherein: The ambient temperature detector is used to issue a safety alarm when it detects that the ambient temperature value in the battery compartment is higher than a preset ambient temperature threshold; The ambient air pressure detector is used to issue a safety alarm when it detects that the ambient air pressure value in the battery compartment is lower than a preset first ambient air pressure threshold or higher than a preset second ambient air pressure threshold, wherein the first ambient air pressure threshold is smaller than the second ambient air pressure threshold.

4. The device according to claim 3, characterized in that The device includes multiple inert gas detection groups, each inert gas detection group includes at least one inert gas detector, the distances between the inert gas detectors belonging to the same inert gas detection group and the gas release holes of the inert gas generator are equal, and the distances between the inert gas detectors belonging to different inert gas detection groups and the gas release holes of the inert gas generator are not equal; the concentration threshold corresponding to the inert gas detector is negatively correlated with the distance between the inert gas detector and the gas release hole.

5. The device according to any one of claims 1 to 4, characterized in that: The device also includes a temperature regulating device, which is used to regulate the gas temperature value of the gas in the circulating air duct.

6. The device according to any one of claims 1 to 4, characterized in that The device also includes a pressure relief valve, which is arranged on the compartment body of the battery compartment and is used to discharge the gas in the battery compartment when the pressure relief valve is in an open state.

7. A passive safety protection method for energy storage batteries, characterized in that: The invention is applied to a passive safety protection device for an energy storage battery, the passive safety protection device for the energy storage battery comprises a battery compartment, a circulating air duct, an inert gas generator, a circulating fan and a plurality of inert gas detectors, the inert gas generator is connected to the circulating air duct, both ends of the circulating air duct are connected to the battery compartment, the circulating fan is arranged in the circulating air duct, the plurality of inert gas detectors are arranged at positions in the battery compartment with different distances from the gas release hole, and the inert gas detectors belonging to the same group are evenly distributed at various positions with the same distance from the gas release hole; the method comprises: When it is determined that an energy storage battery is placed in the battery compartment, the inert gas is filled into the battery compartment through the circulating air duct by the inert gas generator; The circulating fan drives the inert gas to circulate in the circulating air duct and the battery compartment; The inert gas detector can generate a safety alarm when it is detected that the inert gas concentration in the battery compartment is lower than a preset concentration threshold, wherein the preset concentration threshold is negatively correlated with the distance between the inert gas detector and the gas release hole.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 7 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 7 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to claim 7 are implemented.

Images