Safety protection system, method, computer device, readable storage medium and program product for energy storage power station

Abstract

The present application relates to a safety protection system, method, computer equipment, readable storage medium and program product for an energy storage power station. The system includes: the system includes multiple energy storage modules and a central storage tank in the energy storage power station; the central storage tank is used to store inert gas; each energy storage module is provided with an energy storage device; each energy storage module is connected to the central storage tank one by one through the gas transmission channel corresponding to the energy storage module; each gas transmission channel is provided with a gas flow control valve; when the air pressure difference between the energy storage module and the central storage tank is within a preset air pressure difference range, the gas flow control valve corresponding to the energy storage module opens according to the opening corresponding to the air pressure difference, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission pipeline, wherein the opening is proportional to the air pressure difference. The use of this system can reliably perform safety protection for energy storage power stations.

Description

Technical Field

[0001] The present application relates to the field of energy storage safety technology, and in particular to a safety protection system, method, computer equipment, computer-readable storage medium, and computer program product for an energy storage power station. Background Art

[0002] Energy storage power stations are equipment systems that store, convert and release cyclical electrical energy through electrochemical energy storage devices. It is of great significance to promote green energy transformation, respond to extreme events, ensure energy security, promote high-quality energy development, and support the realization of climate change goals. Therefore, it is particularly important to provide safety protection for energy storage power stations.

[0003] The safety protection of energy storage power stations is essentially the safety protection of several energy storage devices in the energy storage power stations. In traditional technologies, the safety protection of energy storage devices is generally carried out by comparing the performance of energy storage devices before use to select energy storage devices with better performance; or by setting up sufficient fire-fighting devices in the energy storage power station, and using fire-fighting devices to extinguish the fire of energy storage devices when the energy storage devices spontaneously combust.

[0004] However, current safety protection methods cannot reliably provide safety protection for energy storage power stations. Summary of the invention

[0005] Based on this, it is necessary to provide a reliable safety protection system, method, computer equipment, computer-readable storage medium and computer program product for energy storage power stations in response to the above technical problems.

[0006] In a first aspect, the present application provides a safety protection system for an energy storage power station, the system comprising a plurality of energy storage modules and a central storage tank in the energy storage power station; the central storage tank is used to store inert gas; each energy storage module is provided with an energy storage device;

[0007] Each energy storage module is connected to the central storage tank one by one through the gas transmission channel corresponding to the energy storage module; a gas flow control valve is provided in each gas transmission channel;

[0008] When the pressure difference between the energy storage module and the central storage tank is within a preset pressure difference range, the gas flow control valve corresponding to the energy storage module opens according to the opening corresponding to the pressure difference, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas pipeline, wherein the opening is proportional to the pressure difference.

[0009] In one embodiment, a first air pressure sensor is provided at the connection between the central storage tank and each gas transmission channel, and a filling port is provided at the bottom of the central storage tank;

[0010] The first gas pressure sensor is used to monitor the first gas pressure of the central storage tank;

[0011] In the case where the first gas pressure is less than the preset first gas pressure range, the filling port is used to provide the central storage tank with inert gas until the first gas pressure reaches the preset first gas pressure range.

[0012] In one of the embodiments, a second air pressure sensor is provided at the connection between each gas transmission channel and the corresponding energy storage module, and the second air pressure sensor is used to monitor the second gas pressure of the energy storage module.

[0013] In one of the embodiments, a pressure relief unit is provided in each energy storage module;

[0014] When the pressure difference between the energy storage module and the central storage tank is within a preset pressure difference range, the pressure relief unit opens to release the original gas in the energy storage module.

[0015] In one of the embodiments, a temperature sensor is provided in each energy storage module;

[0016] The temperature sensor is used to monitor the gas temperature of the energy storage module;

[0017] When it is detected that the energy storage module is in a high temperature state, the gas flow control valve corresponding to the energy storage module opens, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission channel.

[0018] In one of the embodiments, a concentration analyzer is provided in each energy storage module;

[0019] The concentration analyzer is used to monitor the concentration of inert gas in the energy storage module; when the concentration is greater than the preset concentration threshold, the gas flow control valve and the pressure relief unit are closed.

[0020] The safety protection system of the energy storage power station, on the one hand, connects the central storage tank with the multiple energy storage modules one by one through the gas transmission channel, and when the pressure difference between the energy storage module and the central storage tank is within the preset pressure difference range, the gas flow control valve corresponding to the energy storage module is opened, so that the inert gas in the central storage tank flows into the energy storage module that needs to be safety controlled through the corresponding gas transmission pipeline by controlling the pressure difference between the central storage tank and the energy storage module, thereby making the corresponding energy storage equipment in the inert gas environment, so as to achieve reliable safety protection for each energy storage equipment in the energy storage power station; on the other hand, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the preset pressure difference range, and the pressure difference is proportional to the preset pressure difference range, so as to control the amount of gas flowing into the energy storage module through the opening of the gas flow control valve, thereby improving the reliability of safety protection for each energy storage module in the energy storage power station.

[0021] In a second aspect, the present application provides a safety protection method for an energy storage power station, which is applied to a safety protection system of an energy storage power station. The safety protection system includes a plurality of energy storage modules and a central storage tank in the energy storage power station. The central storage tank is used to store inert gas. Each energy storage module is provided with an energy storage device. Each energy storage module is connected to the central storage tank one by one through a gas transmission channel corresponding to the energy storage module. A gas flow control valve is provided in each gas transmission channel. The method includes:

[0022] Detect the pressure difference between the energy storage module and the central storage tank;

[0023] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0024] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0025] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0026] Detect the pressure difference between the energy storage module and the central storage tank;

[0027] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0028] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0029] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0030] Detect the pressure difference between the energy storage module and the central storage tank;

[0031] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0032] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0033] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0034] Detect the pressure difference between the energy storage module and the central storage tank;

[0035] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0036] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0037] The safety protection method, computer equipment, computer-readable storage medium and computer program product of the energy storage power station detect the pressure difference between the energy storage module and the central storage tank; if the pressure difference is within the preset pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the pressure difference; wherein, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening is proportional to the pressure difference. During the whole process, when the pressure difference between the energy storage module and the central storage tank is within the preset pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the pressure difference, thereby realizing the opening of the gas flow control valve, avoiding too little gas flowing into the energy storage module to cause the inability to perform safety protection, and avoiding too much gas flowing into the energy storage module to cause waste, thereby realizing reliable safety protection for each energy storage module in the energy storage power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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.

[0039] Figure 1 A structural block diagram of a safety protection system of an energy storage power station in one embodiment;

[0040] Figure 2 This is an application environment diagram of a safety protection method for an energy storage power station in one embodiment;

[0041] Figure 3 A schematic diagram of a safety protection method for an energy storage power station in one embodiment;

[0042] Figure 4 It is a structural block diagram of the safety protection system of an energy storage power station in a specific application example;

[0043] Figure 5A structural block diagram of a safety protection device of an energy storage power station in one embodiment;

[0044] FIG. 6 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0045] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application 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 application more thorough and comprehensive.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0047] It is understood that the terms "first", "second", etc. used in this application 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, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0048] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0049] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0050] When used herein, the singular forms "a", "an" and " / the" may also include the 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.

[0051] like Figure 1As shown, the present application provides a safety protection system for an energy storage power station, the system comprising a plurality of energy storage modules 100 and a central storage tank 200 in the energy storage power station; the central storage tank 200 is used to store inert gas; each energy storage module 100 is provided with an energy storage device 110;

[0052] Each energy storage module 100 is connected to the central storage tank 200 one by one through the gas transmission channel 120 corresponding to the energy storage module 100; a gas flow control valve 130 is provided in each gas transmission channel 120; when the air pressure difference between the energy storage module 100 and the central storage tank 200 is within a preset air pressure difference range, the gas flow control valve 130 corresponding to the energy storage module 100 is opened according to the opening corresponding to the air pressure difference, and the inert gas in the central storage tank 200 flows into the energy storage module 100 through the corresponding gas transmission pipeline 120, wherein the opening is proportional to the air pressure difference.

[0053] There are multiple energy storage modules and central storage tanks in the energy storage power station. The central storage tank is a tank-shaped storage container. The central storage tank can be the only storage tank in the energy storage power station, or it can be the only storage tank within a fixed area of ​​the energy storage power station. The central storage tank is used to store inert gas. In practical applications, the inert gas can be a non-flammable low-temperature gas such as nitrogen. The capacity of the central storage tank is very large, so the stored inert gas can be supplied to several energy storage modules in the energy storage power station to provide safety protection for the energy storage equipment in each energy storage module.

[0054] The energy storage modules in the energy storage power station can be modules of regular shape, such as a cuboid or a cube, or modules of irregular shape. The energy storage device provided in each energy storage module can be a battery, such as a gradient utilization battery pack, and there can be more than one energy storage device in each energy storage module.

[0055] The gas flow control valve is used to control the flow state of the gas. When the gas flow control valve is in the closed state, the inert gas in the central storage tank cannot flow into the energy storage module; when the gas flow control valve is in the open state, the inert gas in the central storage tank flows into the energy storage module. The gas pipeline is a hollow channel that allows the flow of gas. Connectivity means that the two devices are not completely closed and air can circulate.

[0056] Specifically, in an energy storage power station, there are multiple energy storage devices distributed. In order to provide safety protection for the energy storage devices in the energy storage power station and thus achieve safety protection for the entire energy storage power station, an energy storage module can be set for each energy storage device to isolate the energy storage device from the outside world, and a central storage tank with a large capacity of inert gas can be set to fill the energy storage module with inert gas at a specific time to achieve safety protection for the energy storage device.

[0057] That is to say, the safety protection system of the energy storage power station includes multiple energy storage modules and a central storage tank in the energy storage power station. Each energy storage module is provided with an energy storage device. The multiple energy storage modules exist independently, and each energy storage module is connected to the central storage tank respectively, so that the inert gas in the central storage tank can flow to the energy storage module.

[0058] Furthermore, the inert gas in the central storage tank can flow to the energy storage module through a gas pipeline. Each energy storage module corresponds to a gas pipeline, and one end of each gas pipeline is connected to the energy storage module, and the other end is connected to the central storage tank. By flowing the inert gas in the central storage tank to the energy storage module through the gas pipeline, it is possible to avoid gas escape during the gas flow process, so that the gas can accurately and efficiently flow to the energy storage module corresponding to the gas pipeline. The connection position of the gas pipeline and the energy storage module or the central storage tank is not limited. For example, the gas pipeline can be connected to the left side of the energy storage module, or it can be connected to the bottom center of the energy storage module, such as Figure 1 As shown, the gas pipeline is connected to the top of the energy storage module; as another example, the gas pipeline can be connected to the bottom of the central storage tank, or it can be connected to the top of the central storage tank, such as Figure 1 As shown, the gas pipeline is connected to the side of the central storage tank.

[0059] A gas flow control valve is provided in each gas transmission channel, and the gas flow control valve controls whether the inert gas in the central storage tank can flow to the energy storage module through the corresponding gas transmission channel. The opening of the gas flow control valve is related to the pressure difference on both sides, that is, the gas pressure in the energy storage module and the gas pressure in the central storage tank.

[0060] When the pressure difference between the gas pressure in the energy storage module and the gas pressure in the central storage tank is within the preset pressure difference range, the gas flow control valve in the gas transmission channel corresponding to the energy storage module is opened according to the opening corresponding to the pressure difference. The preset pressure difference range includes multiple ranges, and each range corresponds to the opening of the gas flow control valve one by one. And the opening of the gas flow control valve is proportional to the pressure difference. When the pressure difference is large, the opening of the corresponding gas flow control valve is also large, so that a large amount of inert gas can flow into the energy storage module more quickly and efficiently to replenish the inert gas in the energy storage module.

[0061] For example, the gas pressure in the central storage tank is 5 MPa, and the gas pressure in the energy storage module is 0.8 MPa. When the pressure difference between the energy storage module and the central storage tank is in the range of 4.2~4.5 MPa, the opening of the gas flow control valve is an opening corresponding to the range of 4.2~4.5 MPa, for example, the valve opening is 20%; for another example, the gas pressure in the central storage tank is 5 MPa, and the gas pressure in the energy storage module is 0.4 MPa. When the pressure difference between the energy storage module and the central storage tank is in the range of 4.5~4.8 MPa, the opening of the gas flow control valve is an opening corresponding to the range of 4.5~4.8 MPa, for example, the valve opening is 50%.

[0062] As the gas flow control valve opens according to the opening corresponding to the air pressure difference, the inert gas in the central storage tank gradually flows into the energy storage module to replenish the inert gas in the energy storage module. Therefore, the pressure of the inert gas in the energy storage module gradually increases, the air pressure difference gradually decreases, and the opening of the gas flow control valve gradually decreases until it is completely closed.

[0063] In the safety protection system of the energy storage power station, on the one hand, by connecting the central storage tank with the multiple energy storage modules one by one through the gas transmission channel, and when the pressure difference between the energy storage module and the central storage tank is within the preset pressure difference range, the gas flow control valve corresponding to the energy storage module is opened, so that the pressure difference between the central storage tank and the energy storage module is controlled, so that the inert gas in the central storage tank flows into the energy storage module that needs to be safely controlled through the corresponding gas transmission pipeline, and then the corresponding energy storage equipment is placed in an inert gas environment, so as to achieve reliable safety protection for each energy storage equipment in the energy storage power station; on the other hand, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the preset pressure difference range, and the pressure difference is proportional to the preset pressure difference range, so that the amount of gas flowing into the energy storage module is controlled by the opening of the gas flow control valve, and the reliability of safety protection for each energy storage module in the energy storage power station is improved.

[0064] In one embodiment, a first air pressure sensor is provided at the connection between the central storage tank and each gas transmission channel, and a filling port is provided at the bottom of the central storage tank;

[0065] The first air pressure sensor is used to monitor the first gas pressure of the central storage tank; when the first gas pressure is less than a preset first air pressure range, the filling port is used to provide inert gas to the central storage tank until the first gas pressure reaches the preset first air pressure range.

[0066] Wherein, a first air pressure display screen is arranged on the first air pressure sensor, and the first air pressure display screen is used to display the monitored first gas pressure of the central storage tank.

[0067] Specifically, in order to obtain the pressure difference between the energy storage module and the central storage tank, first, the first gas pressure in the central storage tank needs to be obtained. Therefore, the first gas pressure at the connection between the central storage tank and each gas transmission channel can be monitored by providing a first gas pressure sensor at the connection between the central storage tank and each gas transmission channel. For each gas transmission channel, the first gas pressure at the connection between the central storage tank and each gas transmission channel is substantially the same, so the gas pressure of the first gas pressure sensor can be regarded as the first gas pressure of the central storage tank.

[0068] Furthermore, the first gas pressure of the central storage tank needs to be maintained within a fixed preset first gas pressure range, for example, the first gas pressure of the central storage tank is maintained above 5 MPa. If the first gas pressure of the central storage tank is less than the preset first gas pressure range, it means that the inert gas in the central storage tank is reduced and the inert gas needs to be supplemented to the central storage tank.

[0069] The replenishment of the inert gas to the central storage tank is achieved by setting a filling port in the central storage tank. New inert gas can be delivered to the central storage tank through the filling port to replenish the inert gas in the central storage tank. As the new inert gas is replenished, the first gas pressure in the central storage tank gradually increases. When the first gas pressure in the central storage tank monitored by the first air pressure sensor returns to the first air pressure range, the replenishment of the inert gas is stopped. In one embodiment, the filling port of the central storage tank can be set at the bottom of the central storage tank or at the side of the central storage tank.

[0070] In one embodiment, there may be multiple first air pressure sensors installed at the connection between the central storage tank and each gas transmission channel. Inert gas is provided to the central storage tank only when the first gas pressure of the central storage tank monitored by multiple first air pressure sensors is less than a preset first air pressure range.

[0071] In one embodiment, a safety protection system is applied to an energy storage power station. The corresponding safety protection method of the energy storage power station in this embodiment includes: detecting a first gas pressure of a central storage tank, and providing an inert gas to the central storage tank when the first gas pressure is less than a preset first gas pressure range.

[0072] In this embodiment, by providing a first air pressure sensor at the connection between the central storage tank and each gas transmission channel, the first gas pressure of the central storage tank can be accurately monitored, and it can be timely determined whether there is a lack of inert gas in the central storage tank, so that the inert gas can be replenished in the central storage tank in time, thereby improving the reliability of the safety protection system in the energy storage power station.

[0073] In one embodiment, a second air pressure sensor is provided at the connection between each gas transmission channel and the corresponding energy storage module, and the second air pressure sensor is used to monitor the second gas pressure of the energy storage module.

[0074] Wherein, a second air pressure display screen is provided on the second air pressure sensor, and the second air pressure display screen is used to display the monitored second gas pressure of each energy storage module.

[0075] Specifically, in order to obtain the gas pressure difference between the energy storage module and the central storage tank, after obtaining the first gas pressure in the central storage tank, it is also necessary to obtain the second gas pressure of the energy storage module. Therefore, a second gas pressure sensor can be provided at the connection between each energy storage module and its corresponding gas transmission channel to monitor the second gas pressure at the connection between each energy storage module and its corresponding gas transmission channel, and then based on the first gas pressure of the central storage tank and the second gas pressure at the connection between each energy storage module and its corresponding gas transmission channel, the gas pressure difference between each energy storage module and the central storage tank can be obtained.

[0076] In one embodiment, a safety protection system for an energy storage power station, a corresponding safety protection method for an energy storage power station in this embodiment includes: detecting a second gas pressure at a connection between each gas transmission channel and a corresponding energy storage module. In addition, the safety protection method for an energy storage power station also includes: determining the difference between the first gas pressure and the second gas pressure as the gas pressure difference between the energy storage module and the central storage tank.

[0077] In this embodiment, by providing a second air pressure sensor at the connection between each gas transmission channel and the corresponding energy storage module, the second gas pressure of the energy storage module can be accurately monitored, thereby accurately determining whether the air pressure difference between the energy storage module and the central storage tank is within a preset air pressure difference range.

[0078] In one embodiment, a pressure relief unit is provided in each energy storage module;

[0079] When the pressure difference between the energy storage module and the central storage tank is within a preset pressure difference range, the pressure relief unit opens to release the original gas in the energy storage module.

[0080] Wherein, each energy storage module is provided with a pressure relief unit. When the pressure relief unit is opened, the pressure relief unit is used to release the original gas in the energy storage module.

[0081] Specifically, when the pressure difference between the energy storage module and the central storage tank is within the preset pressure difference range, the gas flow control valve corresponding to the energy storage module opens, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas pipeline. At this time, since the inert gas flows into the energy storage module, the original gas in the energy storage module will be squeezed and released to the outside through the pressure relief unit. That is to say, when the pressure difference between the energy storage module and the central storage tank is within the preset pressure difference range, not only the gas flow control valve will open, but also the pressure relief unit will open to release the original gas in the energy storage module, which is generally a flammable non-inert gas.

[0082] In a specific application, the pressure relief unit is arranged on the right side of the energy storage module. When the width and height of the energy storage module are both L, the pressure relief unit is arranged at L / 2 along the width direction of the energy storage module and at 2L / 3 along the height direction of the energy storage module.

[0083] In one embodiment, a safety protection system is applied to an energy storage power station. The corresponding safety protection method of the energy storage power station in this embodiment includes: when the pressure difference between the energy storage module and the central storage tank is within a preset pressure difference range, opening the pressure relief unit.

[0084] In this embodiment, by providing a pressure relief module in each energy storage module, the original gas in the energy storage module can be released in time when the pressure difference between the energy storage module and the central storage tank is within a preset pressure difference range, thereby avoiding the influence of the original gas in the energy storage module on the energy storage device and avoiding damage to the energy storage device.

[0085] In one embodiment, a temperature sensor is provided in each energy storage module;

[0086] The temperature sensor is used to monitor the gas temperature of the energy storage module; when it is detected that the energy storage module is in a high temperature state, the gas flow control valve corresponding to the energy storage module opens, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission channel.

[0087] The temperature sensor may be an infrared sensor, a thermistor sensor or other sensor with a temperature monitoring function.

[0088] Specifically, the temperature sensor is used to monitor the gas temperature of the energy storage module in real time; when the gas temperature of the energy storage module is detected to be higher than a preset temperature threshold, the energy storage module is in a high temperature state. When the energy storage module is in a high temperature state, the energy storage device inside the energy storage module is also in a high temperature state. In order to avoid the impact of high temperature on the energy storage device, the ambient temperature of the energy storage device needs to be cooled down. At this time, the gas flow control valve corresponding to the energy storage module is opened, and the inert gas in the central storage tank flows into the energy storage module in the high temperature state through the corresponding gas transmission channel. Since the inert gas is a low-temperature and non-flammable gas, the energy storage module can be cooled down after the inert gas fills the energy storage module, thereby achieving safety protection for the energy storage device.

[0089] In an exemplary application, when the length of the energy storage module is 2L and the width and height are both L, the temperature sensor is arranged at L / 2 along the width direction of the energy storage module, at L / 2 along the height direction of the energy storage module, and at L along the length direction of the energy storage module.

[0090] In another exemplary application, a first alarm is provided on the temperature sensor, and a first alarm threshold is provided in the first alarm. When the gas temperature of the energy storage module monitored by the temperature sensor is higher than the preset first alarm threshold, the first alarm sounds an alarm. For example, the first alarm threshold is set to 40°C in the first alarm. When the gas temperature of the energy storage module monitored by the temperature sensor is higher than 40°C, the first alarm sounds an alarm. Furthermore, when the gas temperature of the energy storage module monitored by the temperature sensor is higher than the preset first alarm threshold, it can be considered that the energy storage module is in a high temperature state, and the gas flow control valve corresponding to the energy storage module is opened, so that the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission channel.

[0091] In one embodiment, a safety protection system is applied to an energy storage power station. The corresponding safety protection method of the energy storage power station in this embodiment includes: monitoring the gas temperature of the energy storage module; when the gas temperature is at a high temperature, opening the gas flow control valve corresponding to the energy storage module.

[0092] In this embodiment, by setting a temperature sensor in each energy storage module, the ambient temperature in the energy storage module where the energy storage device is located can be monitored in real time, so as to timely find out which energy storage modules are in a high temperature state and need to be protected, thereby improving the efficiency of safety protection in the energy storage power station. Furthermore, when it is detected that the energy storage module is in a high temperature state, the gas flow control valve corresponding to the energy storage module is opened, so that the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission channel. Due to the low temperature and non-flammable characteristics of the inert gas, the reliability of the safety protection of the energy storage module can be improved.

[0093] In one embodiment, a concentration analyzer is provided in each energy storage module;

[0094] The concentration analyzer is used to monitor the concentration of inert gas in the energy storage module; when the concentration is greater than the preset concentration threshold, the gas flow control valve and the pressure relief unit are closed.

[0095] There is more than one concentration analyzer, and the concentration analyzers can be evenly distributed in each energy storage module to comprehensively monitor the concentration of the inert gas in the corresponding energy storage module. In the case where the energy storage module is a rectangular parallelepiped structure, the concentration analyzers can be distributed at each vertex in the energy storage module.

[0096] Specifically, when there is only one concentration analyzer, the concentration analyzer is used to monitor the concentration of the inert gas in the energy storage module. When the concentration analyzer is greater than a preset concentration threshold, it means that the energy storage module is already full of inert gas and there is no need to continue to replenish the inert gas. Therefore, the gas flow control valve and the pressure relief unit can be closed to control the inert gas in the central storage tank to prevent it from flowing into the energy storage module, and the inert gas in the energy storage module cannot flow out to the outside.

[0097] In the case of multiple concentration analyzers, multiple concentration analyzers are used to monitor the concentration of the inert gas in the energy storage module respectively. When all the concentration analyzers are greater than the preset concentration threshold, the gas flow control valve and the pressure relief unit are closed. If there is a concentration analyzer that is less than the preset concentration threshold, it means that there is an area in the energy storage module that is not filled with inert gas, and the inert gas in the central storage tank needs to continue to flow into the energy storage module.

[0098] In a specific application, each concentration analyzer is provided with a second alarm, and a second alarm threshold is provided in the second alarm. When the concentration of the inert gas in the energy storage module monitored by the concentration analyzer is lower than the second alarm threshold, the second alarm alarms. For example, the second alarm threshold is set to 90% in the second alarm. When the concentration of the inert gas in the energy storage module monitored by the concentration analyzer is lower than 90%, the second alarm alarms.

[0099] In another specific application, when the energy storage module is a rectangular parallelepiped structure, eight concentration analyzers are distributed at each vertex of the energy storage module, and each concentration analyzer is provided with a second alarm. Among them, the second alarm threshold of the second alarm arranged on the concentration analyzers at the four vertices of the top layer is set to 90%. When the concentration of the inert gas monitored by the concentration analyzers at the four vertices of the top layer is lower than 90%, the corresponding second alarm alarms; the second alarm threshold of the second alarm arranged on the concentration analyzers at the four vertices of the bottom layer is set to 80%. When the concentration of the inert gas monitored by the concentration analyzers at the four vertices of the bottom layer is lower than 80%, the corresponding second alarm alarms.

[0100] In this embodiment, by providing a concentration analyzer in each energy storage module, the concentration of the inert gas in the energy storage module can be monitored in real time, and the gas flow control valve and the pressure relief unit can be closed in time to avoid the waste of inert gas in the central storage tank.

[0101] In one embodiment, each energy storage module is further provided with a third air pressure sensor, a third alarm is provided on the third air pressure sensor, and a third alarm threshold is provided in the third alarm. The third air pressure sensor is used to monitor the third gas pressure in the energy storage module, and when the third gas pressure is greater than the third alarm threshold, the third alarm alarms.

[0102] The energy storage power station safety protection method provided in the embodiment of the present application can be applied to Figure 2 In the application environment shown, the controller 102 communicates with the safety protection system 104 of the energy storage power station through a network.

[0103] The safety protection system of the energy storage power station includes multiple energy storage modules and a central storage tank in the energy storage power station. The central storage tank is used to store inert gas. Each energy storage module is provided with energy storage equipment. Each energy storage module is connected to the central storage tank one by one through the gas transmission channel corresponding to the energy storage module. Each gas transmission channel is provided with a gas flow control valve.

[0104] The controller interacts with the safety protection system of the energy storage power station to detect the pressure difference between the energy storage module and the central storage tank in the safety protection system of the energy storage power station; if the pressure difference is within the preset pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the pressure difference; wherein, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening is proportional to the pressure difference.

[0105] In an exemplary embodiment, Figure 3 As shown, a safety protection method for an energy storage power station is provided, and the method is applied to Figure 1 The controller 102 in FIG. 1 is used as an example for explanation.

[0106] S300, detecting the air pressure difference between each energy storage module and the central storage tank.

[0107] Specifically, the first gas pressure of the central storage tank and the second gas pressure of each energy storage module are obtained, and based on the difference between the first gas pressure of the central storage tank and the second gas pressure of each energy storage module, the gas pressure difference between each energy storage module and the central storage tank is obtained.

[0108] In one embodiment, obtaining the first gas pressure of the central storage tank includes: setting the first gas pressure between the central storage tank and each gas transmission channel, and since the first gas pressure between the central storage tank and each gas transmission channel is not much different, the first gas pressure between the central storage tank and each gas transmission channel can be determined as the first gas pressure of the central storage tank.

[0109] In one embodiment, obtaining the second gas pressure of each energy storage module includes: setting the second gas pressure between each gas transmission channel and the connection between the corresponding energy storage module, and determining the second gas pressure as the second gas pressure of the corresponding energy storage module.

[0110] S400: If the air pressure difference is within a preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference.

[0111] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0112] Specifically, if the pressure difference is within the preset pressure difference range, it means that the pressure difference between the energy storage module and the central storage tank is abnormal, and inert gas needs to flow from the central storage tank into the energy storage module to increase the second gas pressure in the energy storage module.

[0113] Therefore, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference, and the opening is proportional to the air pressure difference to control the amount of gas transported from the central storage tank to the energy storage module. For example, when the air pressure difference is large, the opening of the gas flow control valve is also large. At this time, the amount of gas transported from the central storage tank to the energy storage module increases, and the second gas pressure in the energy storage module can be quickly increased to quickly reduce the air pressure difference; when the air pressure difference is small, the opening of the gas flow control valve is also small. At this time, the amount of gas transported from the central storage tank to the energy storage module decreases, and the second gas pressure in the energy storage module is slowly increased.

[0114] In some application examples, the first gas pressure in the central storage tank is maintained above 5 MPa, and the energy storage module can be maintained in a positive pressure inert gas environment of 1.1 MPa-2 MPa. At this time, the gas flow control valve is closed.

[0115] In the above-mentioned safety protection method of the energy storage power station, the air pressure difference between the energy storage module and the central storage tank is detected; if the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference; wherein, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening is proportional to the air pressure difference. During the whole process, when the air pressure difference between the energy storage module and the central storage tank is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference, thereby realizing the opening of the gas flow control valve, avoiding too little gas flowing into the energy storage module to cause the inability to perform safety protection, and also avoiding too much gas flowing into the energy storage module to cause waste, thereby realizing reliable safety protection for each energy storage module in the energy storage power station.

[0116] In one embodiment, the present application provides a safety protection system for an energy storage power station, which has the following advantages:

[0117] 1. Solve the problem of high difficulty in active safety protection of energy storage power station systems and reduce fire risks.

[0118] By building a passive safety protection system for the energy storage power station and using a central storage tank to supply inert gas to multiple energy storage modules at the same time, the energy storage equipment in the energy storage module is always in an inert gas environment with positive pressure and room temperature, so that the energy storage equipment is always in an oxygen-free state. In this state, even if the energy storage equipment has thermal runaway, the combustible electrolyte and other combustible materials inside it cannot further react with the oxidant and catch fire. The fire safety risk of the energy storage equipment is reduced from the root, thereby achieving safe and effective application of the energy storage equipment.

[0119] 2. Build a multi-level safety alarm mechanism and an inert gas fire-fighting mechanism to achieve all-round safety protection for the energy storage system.

[0120] In addition to constructing a positive pressure inert gas environment and adopting passive safety protection measures to ensure the safety of the energy storage power station, a three-level safety alarm mechanism is constructed around the energy storage equipment by arranging concentration analyzers, temperature sensors, and air pressure sensors in the energy storage module, and building a comprehensive safety monitoring mechanism from three dimensions: the concentration of inert gas, the gas temperature of the energy storage module, and the air pressure of the energy storage module. The alarm mechanism for the inert gas concentration ensures that the concentration of inert gas in the energy storage module is always at a high level, thereby eliminating the possibility of battery fire after thermal runaway and avoiding further property losses; the alarm mechanism for the gas temperature of the cabin energy storage module can capture thermal runaway behavior in time in the energy storage module, thereby reminding the relevant staff to deal with it in time and replace the faulty battery cells and battery packs, so that the system continues to operate safely and further ensure the safety performance of the energy storage equipment. In addition, by arranging a central storage tank of low-temperature and high-pressure inert gas, a strong and effective fire-fighting mechanism can be built for the energy storage power station. When the energy storage equipment in the energy storage power station is in a high-temperature state, the low-temperature and low-pressure inert gas quickly flows into the energy storage module to control the temperature level of the energy storage module and prevent further damage to other electrical components.

[0121] In a specific application example, Figure 4 As shown, the safety protection system of the energy storage power station includes a plurality of energy storage modules 100 and a central storage tank 200 in the energy storage power station, wherein: Figure 4 Only three energy storage modules 100 are shown. Each energy storage module 100 is connected to the central storage tank 200 through the gas transmission channel 120 corresponding to the energy storage module 100. A filling port 210 is provided at the bottom of the central storage tank 200 for replenishing the inert gas in the central storage tank 200 in time.

[0122] A gas flow control valve 130 is provided on each gas transmission channel 120. A first air pressure sensor 140 is provided at the connection between each gas transmission channel 120 and the central storage tank 200, and the first air pressure sensor 140 is used to monitor the first gas pressure at the connection between the gas transmission channel 120 and the central storage tank 200; a second air pressure sensor 150 is provided at the connection between each gas transmission channel 120 and its corresponding energy storage module 100, and the second air pressure sensor 150 is used to monitor the second gas pressure at the connection between the gas transmission channel 120 and its corresponding energy storage module 100.

[0123] Each energy storage module 100 adopts a closed rectangular parallelepiped structure, the height and width of the energy storage module 100 are the same, both are L, and the length of the energy storage module 100 is 2L. An energy storage device 110 is arranged in each energy storage module 100. A sealing door 160 is arranged on the side of each energy storage module 100 for replacing the energy storage device 110.

[0124] A temperature sensor 170 is provided in the middle of each energy storage module 100 for real-time monitoring of the gas temperature in the energy storage module 100. The temperature sensor 170 is arranged at L along the length direction of the energy storage module 100 and at L / 2 along the height direction and width direction of the energy storage module 100.

[0125] A concentration analyzer 180 is disposed at each of the eight corners of each energy storage module 100 to monitor the concentration of the inert gas at each corner in real time. Figure 4 In each energy storage module 100, only the concentration analyzer at the lower right corner is shown.

[0126] A pressure relief unit 190 is provided on the right side of each energy storage module 100 for releasing the original gas in the energy storage module 100 . The pressure relief unit 190 is arranged at L / 2 along the width direction of the energy storage module 100 and at 2L / 3 along the height direction of the energy storage module 100 .

[0127] Each energy storage module 100 is also provided with a third gas pressure sensor 220 for monitoring the third gas pressure in the energy storage module 100 .

[0128] When the safety protection system of the energy storage power station is used to protect the safety of the energy storage power station, it includes:

[0129] The first gas pressure at the connection between the gas transmission channel and the central storage tank is monitored by the first gas pressure sensor; the second gas pressure at the connection between the gas transmission channel and the corresponding energy storage module 100 is monitored by the second gas pressure sensor. The difference between the first gas pressure and the second gas pressure is used as the gas pressure difference between the energy storage module and the central storage tank.

[0130] The first gas pressure in the central storage tank is maintained at 5 MPa, and the second gas pressure in the energy storage module A is initially at normal atmospheric pressure 0.1 MPa. When the pressure difference between the first gas pressure in the central storage tank and the second gas pressure in the energy storage module is higher than 4.8MPa, the opening of the gas flow control valve corresponding to the energy storage module A is 100%; as the gas flow control valve is opened, the gas in the central storage tank gradually flows into the energy storage module A, increasing the second gas pressure in the energy storage module A; when the pressure difference between the first gas pressure in the central storage tank and the second gas pressure in the energy storage module is within the range of 4.5~4.8MPa, the opening of the gas flow control valve corresponding to the energy storage module A is 50%; when the pressure difference between the first gas pressure in the central storage tank and the second gas pressure in the energy storage module is within the range of 4.2~4.5MPa, the opening of the gas flow control valve corresponding to the energy storage module A is reduced to 20%; when the pressure difference between the first gas pressure in the central storage tank and the second gas pressure in the energy storage module is lower than 3.8MPa, the gas flow control valve corresponding to the energy storage module A is closed. In other words, a positive pressure inert gas environment of about 1.2Mpa can be maintained in the energy storage module.

[0131] When the inert gas in the central storage tank flows into the energy storage module through the corresponding gas pipeline, the original air in the energy storage module is released to the outside through the pressure relief unit.

[0132] Alternatively, when the concentrations of inert gases monitored by the eight concentration analyzers are all greater than 95%, the gas flow control valve and the pressure relief unit are closed in succession. At this time, the safety protection system enters a normal working state.

[0133] In the normal working state of the safety protection system, the eight concentration analyzers in the energy storage module monitor the concentration of the inert gas in the energy storage module in real time. When the concentration detected by a concentration analyzer is abnormal, the corresponding concentration analyzer will alarm. At the same time, the temperature sensor and the third air pressure sensor in the energy storage module monitor the gas temperature and air pressure in the energy storage module in real time, and perform an alarm operation when the monitored gas temperature or air pressure is abnormal.

[0134] Furthermore, when the temperature sensor issues a high temperature alarm, the gas flow control valve corresponding to the energy module is fully opened, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission channel.

[0135] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned 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 does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can 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 to be 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.

[0136] Based on the same inventive concept, the embodiment of the present application also provides a safety protection device for an energy storage power station for implementing the safety protection method for an energy storage power station involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the safety protection device for one or more energy storage power stations provided below can refer to the limitations of the safety protection method for energy storage power stations above, and will not be repeated here.

[0137] In an exemplary embodiment, Figure 5 As shown, a safety protection device for an energy storage power station is provided, comprising: a detection module 300 and a protection module 400, wherein:

[0138] A detection module 300, used to detect the air pressure difference between each energy storage module and the central storage tank;

[0139] The protection module 400 is used to open the gas flow control valve corresponding to the energy storage module according to the opening corresponding to the air pressure difference if the air pressure difference is within a preset air pressure difference range; wherein, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening is proportional to the air pressure difference.

[0140] Each module in the safety protection device of the energy storage power station can be implemented in whole or in part by software, hardware and their combination. Each module can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each module above.

[0141] In an exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG6. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, 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, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as air pressure difference. 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 through a network connection. When the computer program is executed by the processor, a safety protection method for an energy storage power station is implemented.

[0142] Those skilled in the art will understand that the structure shown in FIG. 6 is merely a block diagram of a partial 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 shown in the figure, or combine certain components, or have a different arrangement of components.

[0143] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0144] Detect the air pressure difference between each energy storage module and the central storage tank;

[0145] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0146] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0147] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0148] Detect the air pressure difference between each energy storage module and the central storage tank;

[0149] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0150] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0151] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0152] Detect the air pressure difference between each energy storage module and the central storage tank;

[0153] If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference;

[0154] Among them, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas from the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

[0155] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method 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.

[0156] 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.

[0157] 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 safety protection system for an energy storage power station, characterized in that: The system comprises a plurality of energy storage modules and a central storage tank in an energy storage power station; the central storage tank is used to store inert gas; each of the energy storage modules is provided with an energy storage device; Each energy storage module is connected to the central storage tank one by one through the gas transmission channel corresponding to the energy storage module; a gas flow control valve is provided in each gas transmission channel; When the air pressure difference between the energy storage module and the central storage tank is within a preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas pipeline, wherein the opening is proportional to the air pressure difference.

2. The system according to claim 1, characterized in that A first air pressure sensor is provided at the connection between the central storage tank and each of the air delivery channels, and the central storage tank is provided with a filling port; The first gas pressure sensor is used to monitor the first gas pressure of the central storage tank; In a case where the first gas pressure is less than a preset first gas pressure range, the filling port is used to provide inert gas to the central storage tank until the first gas pressure reaches the preset first gas pressure range.

3. The system according to claim 1, characterized in that A second air pressure sensor is provided at the connection between each of the gas transmission channels and the corresponding energy storage module, and the second air pressure sensor is used to monitor the second gas pressure of the energy storage module.

4. The system according to claim 1, characterized in that A pressure relief unit is provided in each of the energy storage modules; When the pressure difference between the energy storage module and the central storage tank is within a preset pressure difference range, the pressure relief unit opens to release the original gas in the energy storage module.

5. The system according to claim 1, characterized in that Each of the energy storage modules is provided with a temperature sensor; The temperature sensor is used to monitor the gas temperature of the energy storage module; When it is detected that the energy storage module is in a high temperature state, the gas flow control valve corresponding to the energy storage module is opened, and the inert gas in the central storage tank flows into the energy storage module through the corresponding gas transmission channel.

6. The system according to claim 4, characterized in that Each of the energy storage modules is provided with a concentration analyzer; The concentration analyzer is used to monitor the concentration of the inert gas in the energy storage module; when the concentration is greater than a preset concentration threshold, the gas flow control valve and the pressure relief unit are closed.

7. A safety protection method for an energy storage power station, characterized in that: A safety protection system applied to an energy storage power station, the safety protection system comprising a plurality of energy storage modules and a central storage tank in the energy storage power station, the central storage tank being used to store inert gas, each of the energy storage modules being provided with an energy storage device, each of the energy storage modules being connected one-to-one with the central storage tank through a gas transmission channel corresponding to the energy storage module, each of the gas transmission channels being provided with a gas flow control valve; the method comprising: Detecting the air pressure difference between each of the energy storage modules and the central storage tank; If the air pressure difference is within the preset air pressure difference range, the gas flow control valve corresponding to the energy storage module is opened according to the opening corresponding to the air pressure difference; Wherein, after the gas flow control valve is opened, the gas pipeline is used to transport the inert gas in the central storage tank to the energy storage module, and the opening degree is proportional to the gas pressure difference.

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.

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