Energy storage control system and method

Abstract

Disclosed in the present invention are an energy storage control system and method. The energy storage control system comprises an energy storage controller and a fire protection controller. The fire protection controller comprises a first-stage fire protection controller and a second-stage fire protection controller, wherein at least one of the first-stage fire protection controller and the second-stage fire protection controller is communicationally connected to the energy storage controller, and the second-stage fire protection controller is communicationally connected to at least one of the first-stage fire protection controller and the energy storage controller. The energy storage controller is used for controlling the operation mode of an energy storage system; the first-stage fire protection controller is used for preventing a battery in thermal runaway in the energy storage system from being on fire; and the second-stage fire protection controller is used for suppressing the spread of fire of the battery in thermal runaway.

Description

Energy storage control system and method

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202410418705.9, filed on April 8, 2024, entitled “Energy storage control system and method”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of battery detection, and in particular to an energy storage control system and method. BACKGROUND

[0004] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also increasingly used in the field of energy storage and the like.

[0005] An energy storage system is composed of multiple energy storage sub-modules, each of which contains multiple batteries. Batteries are prone to thermal runaway under conditions such as short circuit, overcharge and overdischarge, and thermal abuse, and can produce flammable or toxic gases such as H2, hydrocarbons, CO, etc. If the battery thermal runaway gas reaches a certain concentration in a local space and encounters a fire source, a large-scale fire or even an explosion accident can occur. In related technologies, the energy storage system is often protected at only a single level, for example, only air intake and air exchange measures are used to prevent explosion protection of the energy storage system, but the protection effect is generally poor. SUMMARY

[0006] Therefore, the embodiments of the present disclosure at least provide an energy storage control system and method.

[0007] The technical solutions of the embodiments of the present disclosure are implemented as follows:

[0008] In one aspect, the present disclosure provides an energy storage control system, which comprises an energy storage controller and a fire control controller, and the fire control controller comprises a primary fire control controller and a secondary fire control controller. At least one of the primary fire control controller and the secondary fire control controller is in communication connection with the energy storage controller. The secondary fire control controller is in communication connection with at least one of the primary fire control controller and the energy storage controller. The energy storage controller is configured to control the operation mode of an energy storage system. The primary fire control controller is configured to prevent a thermal runaway battery in the energy storage system from catching fire. The secondary fire control controller is configured to suppress the spread of fire of the thermal runaway battery.

[0009] In the embodiments of the present disclosure, at least one of the first fire control controller and the second fire control controller is in communication connection with the energy storage controller, and the second fire control controller is in communication connection with at least one of the first fire control controller and the energy storage controller. Therefore, the energy storage controller can control the first fire control controller to prevent the thermal runaway battery in the energy storage system from catching fire, or control the second fire control controller to suppress the spread of the fire of the thermal runaway battery. In this way, through the linkage control of the energy storage controller, the first fire control controller and the second fire control controller, the energy storage system can be effectively protected in multiple levels, so as to reduce the possibility of fire caused by the thermal runaway of the battery, and accurately suppress the spread of the fire of the thermal runaway battery, thereby reducing the damage range of the energy storage system caused by the fire of the battery.

[0010] In some embodiments, the energy storage controller is in communication connection with a temperature monitoring system of the energy storage system, wherein the temperature monitoring system is configured to collect temperature information of a plurality of batteries of the energy storage system; the energy storage controller is configured to send a first fire control command to the first fire control controller or the second fire control controller in a case where it is determined based on the temperature information of the plurality of batteries that there is a thermal runaway battery in the plurality of batteries; and the first fire control controller or the second fire control controller is configured to control the fire control system to prevent the thermal runaway battery from catching fire or control the fire control system to suppress the spread of the fire of the thermal runaway battery in response to the first fire control command.

[0011] In the embodiments of the present disclosure, by obtaining the temperature information corresponding to each of the plurality of batteries, it can be accurately determined whether the battery has thermal runaway, so that early warning can be made, and by sending the first fire control command to the first fire control controller, the first fire control controller is caused to control the fire control system to prevent the thermal runaway battery from catching fire, or by sending the first fire control command to the second fire control controller, the second fire control controller is caused to control the fire control system to suppress the spread of the fire of the thermal runaway battery, thereby reducing the possibility of fire caused by thermal runaway.

[0012] In some embodiments, in a case where the energy storage controller sends the first fire control command to the first fire control controller, the second fire control controller is configured to control the fire control system to suppress the spread of the fire of the thermal runaway battery in response to a second fire control command based on position information of the thermal runaway battery carried in the second fire control command, wherein the second fire control command is sent by the energy storage controller or the first fire control controller to the second fire control controller in a case where the thermal runaway battery catches fire.

[0013] In the embodiments of the present disclosure, in the case that the energy storage controller sends the first fire control command to the first fire control controller, the second fire control command is issued by the energy storage controller or the first fire control controller, so that the second fire control controller can timely control the fire control system to suppress the fire spread of the thermal runaway battery. Meanwhile, the second fire control command carries the position information of the thermal runaway battery, so that the second fire control controller can accurately locate the thermal runaway battery, thereby enabling the second fire control controller to accurately control the fire control system to suppress the fire spread of the thermal runaway battery.

[0014] In some embodiments, the energy storage controller is configured to send a first control command to the first fire control controller in the case that the temperature information of the thermal runaway battery is greater than the first temperature threshold; the first fire control controller is configured to control the fire control system to increase the prevention intensity for preventing the thermal runaway battery from catching fire in response to the first control command. And / or, the second fire control controller is configured to control the fire control system to increase the suppression intensity for suppressing the fire spread of the thermal runaway battery in response to the second control command; wherein the second control command is sent by the energy storage controller or the first fire control controller to the second fire control controller in the case that the temperature information of the thermal runaway battery is greater than the second temperature threshold.

[0015] In the embodiments of the present disclosure, the energy storage controller can control the first fire control controller to increase the prevention intensity for preventing the thermal runaway battery from catching fire and / or control the second fire control controller to increase the suppression intensity for suppressing the fire spread of the thermal runaway battery as the temperature information of the thermal runaway battery continuously increases. In this way, the prevention intensity for preventing the thermal runaway battery from catching fire and the suppression intensity for suppressing the fire spread of the thermal runaway battery can be adjusted according to the actual temperature of the thermal runaway battery, so that the prevention intensity matched with the temperature of the thermal runaway battery is used to prevent the thermal runaway battery from catching fire and the suppression intensity matched with the temperature of the thermal runaway battery is used to suppress the fire spread of the thermal runaway battery, thereby improving the effect of preventing the thermal runaway battery from catching fire and the effect of suppressing the fire spread of the thermal runaway battery.

[0016] In some embodiments, the fire control controller further comprises a third fire control controller; wherein the energy storage controller is configured to send a third fire control command to the third fire control controller in the case that the thermal runaway battery catches fire and the fire of the thermal runaway battery spreads; and the third fire control controller is configured to control the fire control system to perform a fire delay treatment on the energy storage system in response to the third fire control command.

[0017] In the embodiments of the present disclosure, the third fire control controller can control the fire control system to perform a fire delay treatment on the energy storage system in the case that the thermal runaway battery catches fire and the fire of the thermal runaway battery spreads. In this way, the fire is prevented from further spreading to other adjacent batteries or buildings, thereby reducing the loss caused by the fire.

[0018] In some embodiments, at least two of the energy storage controller, the first fire control controller, the second fire control controller and the third fire control controller can be integrated together.

[0019] In the embodiments of the present disclosure, at least two of the energy storage controller, the first fire control controller, the second fire control controller and the third fire control controller can be integrated together. Thus, the flexibility of the energy storage control system is improved.

[0020] In some embodiments, the energy storage control system further comprises a fire alarm system; the fire alarm system is in communication connection with the second fire control controller; wherein the fire alarm system is configured to, in the case of a thermal runaway battery fire, send a preparation start information to the energy storage controller, the preparation start information being used to indicate that the second fire control controller is ready to be started; the energy storage controller is configured to, in response to the preparation start information, send a message to the fire alarm system, the message being used to indicate that the energy storage system is stopped; and the fire alarm system is configured to, in response to the message indicating that the energy storage system is stopped, send a second fire control command to the second fire control controller.

[0021] In the embodiments of the present disclosure, the fire alarm system can send the preparation start information to the energy storage controller before starting the second fire control controller, so that the energy storage controller stops the energy storage system. Thus, the fire alarm system can send the second fire control command to the second fire control controller to start the second fire control controller in the case that the energy storage system is stopped. Since the second fire control controller may cause damage to the energy storage system when controlling the fire control system to suppress the spread of the thermal runaway battery fire, the fire alarm system can start the second fire control controller only in the case that the energy storage system is stopped, so as to reduce the damage to the energy storage system caused by starting the second fire control controller.

[0022] In some embodiments, the fire alarm system is in communication connection with the third fire control controller; and the second fire control controller is configured to send state information of the second fire control controller to the fire alarm system; and the fire alarm system is configured to, based on the state information of the second fire control controller, determine the case that the thermal runaway battery fire spreads, and send a third fire control command to the third fire control controller.

[0023] In the embodiments of the present disclosure, the fire alarm system which works independently of the energy storage controller can obtain the state information of the second fire control controller, and based on the state information of the second fire control controller, determine the case that the thermal runaway battery fire spreads, and send a third fire control command to the third fire control controller. In this way, by using the state information of the second fire control controller to determine whether to start the third fire control controller, the accuracy of executing the fire spread control process can be improved.

[0024] In some embodiments, the energy storage fire control controller further comprises a background monitoring system connected to one or more of the following modules through at least two different communication modes, wherein the background monitoring system is configured to monitor state information of one or more of the following modules; the modules include: the energy storage controller, the first-level fire control controller, the second-level fire control controller, the third-level fire control controller, and the fire alarm system.

[0025] In the embodiments of the present disclosure, the background monitoring system in the energy storage control system, the fire alarm system, and the multi-level fire control controller are connected, which can realize reliable monitoring and early warning of multiple backgrounds, improve the sensitivity of the energy storage control system in multiple dimensions, and improve the safety of the energy storage system. Moreover, the background monitoring system is connected to at least one module in the energy storage control system through at least two different communication modes, which can improve the stability of communication.

[0026] In some embodiments, the first-level fire control controller is in communication connection with the second-level fire control controller; the energy storage controller is configured to send a second fire control command to the first-level fire control controller in the case of thermal runaway battery fire; and the first-level fire control controller is configured to send a second fire control command to the second-level fire control controller in the case of closing the valve related to the prevention of thermal runaway battery fire.

[0027] In the embodiments of the present disclosure, the second-level fire control controller can be connected to the energy storage controller through the first-level fire control controller, so that in the case of thermal runaway battery fire, the second-level fire control controller can be sent a second fire control command by the first-level fire control controller. In this way, the first-level fire control controller can timely close the valve related to the prevention of thermal runaway battery fire when receiving the second fire control command sent by the energy storage controller.

[0028] In some embodiments, the first-level fire control controller is in communication connection with the fire alarm system; wherein the first-level fire control controller is further configured to send state information of the first-level fire control controller to the fire alarm system; the second-level fire control controller is further configured to send state information of the second-level fire control controller to the fire alarm system; and the fire alarm system is configured to send a third fire control command to the third-level fire control controller in the case of determining thermal runaway battery fire based on the state information of the first-level fire control controller and determining thermal runaway battery fire expansion based on the state information of the second-level fire control controller.

[0029] In the embodiments of the present disclosure, the third-level fire control controller can be controlled to work through the fire alarm system which works independently relative to the energy storage controller. In this way, the third-level fire control controller can be controlled by both the energy storage controller and the fire alarm system to perform fire delay treatment on the energy storage system, thereby improving the stability of the energy storage control system.

[0030] In some embodiments, the energy storage controller includes at least two energy storage sub-controllers that are communicatively connected to each other, and each energy storage sub-controller is communicatively connected to the temperature monitoring system of the energy storage system; one of the at least two energy storage sub-controllers is a master energy storage controller; and the master energy storage controller is determined based on the health status corresponding to the at least two energy storage sub-controllers.

[0031] In the embodiment of the present disclosure, by configuring the energy storage controller to be redundant, the stability of the energy storage control system can be improved, and the situation where the entire energy storage control system stops working due to the failure of a single energy storage controller can be reduced.

[0032] In some embodiments, the first-level fire controller includes at least two first-level fire sub-controllers that are communicatively connected to each other; each first-level fire sub-controller is communicatively connected to each energy storage sub-controller; one of the at least two first-level fire sub-controllers is a first-level fire main controller; the first-level fire main controller is determined based on the health status corresponding to the at least two first-level fire sub-controllers.

[0033] In the embodiment of the present disclosure, by setting up redundancy for the first-level fire controller, the stability of the energy storage control system can be improved, and the situation in which the thermal runaway battery fire in the energy storage system cannot be prevented due to the failure of a single first-level fire controller is reduced.

[0034] In some embodiments, the secondary fire controller includes at least two secondary fire sub-controllers that are communicatively connected to each other; each secondary fire sub-controller is communicatively connected to each energy storage sub-controller; one of the at least two secondary fire sub-controllers is a secondary fire main controller; the secondary fire main controller is determined based on the health status corresponding to the at least two secondary fire sub-controllers.

[0035] In the disclosed embodiments, the cross-redundant communication connection between the secondary fire controller and the energy storage controller can improve the stability of the energy storage control system. Furthermore, the secondary fire main controller in the secondary fire controller is determined by the health status of at least two secondary fire sub-controllers. This ensures that the currently operating secondary fire main controller is the healthiest of the at least two secondary fire sub-controllers, further improving the stability of the energy storage control system.

[0036] In some embodiments, at least two energy storage sub-controllers include a first energy storage sub-controller and a second energy storage sub-controller; wherein the first energy storage sub-controller is respectively communicated with the first-level fire controller, the second-level fire controller and the third-level fire controller; the second energy storage sub-controller is respectively communicated with the first-level fire controller, the second-level fire controller and the third-level fire controller; the fire alarm system is respectively communicated with the first-level fire controller, the second-level fire controller and the third-level fire controller.

[0037] In the disclosed embodiment, each energy storage sub-controller in the energy storage controller is directly connected to the primary, secondary, and tertiary fire controllers. The fire alarm system is also directly connected to the primary, secondary, and tertiary fire controllers. This allows both the energy storage controller and the fire alarm system to directly control each level of fire controllers, enabling rapid activation of the corresponding fire controller in the event of an anomaly.

[0038] In some embodiments, the first energy storage sub-controller and the second energy storage sub-controller are respectively connected to the fire alarm system through two communication links; the fire alarm system is respectively connected to the first-level fire controller, the second-level fire controller and the third-level fire controller.

[0039] In the disclosed embodiment, each energy storage sub-controller in the energy storage controller is connected to various levels of fire controllers via the fire alarm system. This allows all control commands issued by the energy storage controller to pass through the fire alarm system, thereby improving the accuracy of fire controller control. Furthermore, each energy storage sub-controller in the energy storage controller communicates with the fire alarm system via two communication links, which improves the stability of the communication process.

[0040] In some embodiments, the first-level fire controller includes a gas monitoring system, a combustion prevention treatment system, and a control system; the gas monitoring system is used to detect the concentration of combustible gas in the energy storage system; the control system is used to control the combustion prevention treatment system to perform combustion prevention treatment on the energy storage system to reduce the concentration of combustible gas when the concentration of combustible gas is greater than a preset value.

[0041] In the disclosed embodiments, a gas monitoring system can monitor the combustible gas concentration within the energy storage system. If the combustible gas concentration exceeds a preset value, the preventive combustion treatment system is controlled to perform preventive combustion treatment on the energy storage system to reduce the combustible gas concentration. In this way, the gas monitoring system can obtain the current combustible gas concentration within the energy storage system in real time. If the combustible gas concentration exceeds the preset value, the combustible gas concentration in the energy storage system is reduced, thereby reducing the possibility of fires in thermal runaway batteries.

[0042] In some embodiments, the energy storage system includes multiple energy storage submodules; each energy storage submodule includes at least one battery module; each battery module includes multiple electrical cabinets; each electrical cabinet includes multiple electrical boxes; each electrical box includes multiple batteries; a first-level fire controller is used to prevent thermal runaway battery fires; a second-level fire controller is used to suppress the spread of fire in thermal runaway batteries based on the location information of the thermal runaway batteries among the multiple batteries; and a third-level fire controller is used to perform fire delay processing on the energy storage system.

[0043] In the embodiments of the present disclosure, the characteristics of the energy storage system can be combined to provide fire protection from point (i.e., each battery in the high-voltage direct-current direct connection energy storage valve) to surface (i.e., the entire energy storage system) in a hierarchical manner. The first fire control controller reduces the possibility of fire caused by the thermal runaway battery. The second fire control controller extinguishes the fire as much as possible. The third fire control controller reduces the spread of the fire, so that the normal production of the energy storage system and the normal shutdown under fire conditions can be realized.

[0044] In another aspect, the present disclosure provides an energy storage control method applied to an energy storage controller in an energy storage control system, the energy storage control system further comprising a fire control controller; the fire control controller comprising a first fire control controller and a second fire control controller; the first fire control controller being in communication connection with the energy storage controller; the second fire control controller being in communication connection with at least one of the first fire control controller and the energy storage controller; the method comprising: obtaining temperature information of a plurality of batteries of an energy storage system; determining whether there is a thermal runaway battery in the plurality of batteries based on the temperature information of the plurality of batteries; in the case that there is a thermal runaway battery in the plurality of batteries, controlling the first fire control controller to prevent the thermal runaway battery from catching fire; in the case that the thermal runaway battery catches fire, controlling the second fire control controller to suppress the spread of the fire of the thermal runaway battery.

[0045] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, but not limiting the technical solutions of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the technical solutions of the present disclosure.

[0047] FIG. 1 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure;

[0048] FIG. 2 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure;

[0049] FIG. 3 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure;

[0050] FIG. 4 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure;

[0051] FIG. 5 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure;

[0052] FIG. 6 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure;

[0053] Fig. 7 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0054] Fig. 8 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0055] Fig. 9 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0056] Fig. 10 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0057] Fig. 11 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0058] Fig. 12 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0059] Fig. 13 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0060] Fig. 14 is a schematic diagram of a component structure of a kind of energy storage control system provided by an embodiment of the present disclosure;

[0061] Fig. 15 is a schematic diagram of an implementation process of a kind of method for controlling a welding device provided by an embodiment of the present disclosure;

[0062] Fig. 16 is a schematic diagram of an implementation process of a kind of method for controlling a welding device provided by an embodiment of the present disclosure;

[0063] Fig. 17 is a schematic diagram of an implementation process of a kind of method for controlling a welding device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the technical scheme of the present disclosure is further described in detail below in combination with the drawings and embodiments, and the described embodiments should not be regarded as limiting the present disclosure, and all other embodiments obtained by a person of ordinary skill in the art without making creative labor belong to the scope of protection of the present disclosure.

[0065] In the following description, "some embodiments" are related to a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subset of all possible embodiments, and can be combined with each other without conflict.

[0066] The terms "first / second / third" involved are only to distinguish similar objects, and do not represent a specific order for the objects. Understandably, the "first / second / third" can be interchanged with a specific order or sequence as allowed, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the specification herein is for describing the present disclosure only and is not intended to be limiting of the present disclosure.

[0068] At present, new energy batteries are increasingly widely used in life and industry. New energy batteries are not only applied to energy storage systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also increasing.

[0069] In the embodiments of the present disclosure, the battery in the energy storage system can be a battery monomer. The battery monomer refers to a basic unit capable of realizing mutual conversion between chemical energy and electrical energy, which can be used to make a battery module or a battery pack, thereby being used to supply power to a power consumption device. The battery monomer can be a secondary battery, which refers to a battery monomer that can be activated by charging after the battery monomer is discharged. The battery monomer can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present disclosure are not limited thereto.

[0070] In the embodiments of the present disclosure, the battery can also be a single physical module including one or more battery monomers to provide higher voltage and capacity. When there are multiple battery monomers, the multiple battery monomers are connected in series, parallel or mixed connection through a busbar component.

[0071] In order to solve the problem that in the related art, only the air intake and air exchange measures are adopted to prevent explosion of the energy storage system, and the battery in the energy storage system that appears thermal runaway cannot be prevented from fire, thereby causing a fire. The embodiments of the present disclosure provide an energy storage control system, which can prevent the battery in the energy storage system from catching fire due to thermal runaway, and can also suppress the spread of the fire of the battery in the case of thermal runaway. The energy storage system can be a high-voltage direct-current direct-hanging energy storage valve, which includes a plurality of batteries, which can be any of the batteries described above. In other embodiments, the energy storage system can also be any integrated system including a plurality of batteries.

[0072] FIG. 1 is a schematic diagram of a composition structure of an energy storage control system according to an embodiment of the present disclosure. As shown in FIG. 1, the energy storage control system 100 includes an energy storage controller 110 and a fire control controller, which includes a primary fire control controller 121 and a secondary fire control controller 122. The primary fire control controller 121 and the secondary fire control controller 122 are in communication connection with the energy storage controller 110. The secondary fire control controller 122 is in communication connection with at least one of the primary fire control controller 121 and the energy storage controller 110. In FIG. 1, the dashed line indicates that the primary fire control controller 121 can be in direct communication connection with the energy storage controller 110 or in communication connection with the energy storage controller 110 through the secondary fire control controller 122. The secondary fire control controller 122 can be in communication connection with the primary fire control controller 121 or in communication connection with the secondary fire control controller 122. The secondary fire control controller 122 can also be in communication connection with both the primary fire control controller 121 and the secondary fire control controller 122.

[0073] The energy storage controller 110 is configured to control the operation mode of the energy storage system 200.

[0074] The primary fire control controller 121 is configured to prevent a thermal runaway battery in the energy storage system 200 from catching fire.

[0075] The secondary fire control controller 122 is configured to suppress the spread of fire of the thermal runaway battery.

[0076] In an embodiment of the present disclosure, the operation mode of the energy storage system can include at least one of a start mode, a stop mode, a lockout mode, and an unlock mode. The energy storage controller can control the energy storage system to be in a corresponding operation mode by issuing a corresponding control instruction to the energy storage system. For example, the energy storage system can include a power module control protection module and a power module. The energy storage controller can issue a lockout control instruction to the power module control protection system. The power module control protection module can control the power module to be in a lockout mode in response to the lockout control instruction.

[0077] In an embodiment of the present disclosure, when there is a thermal runaway battery in the plurality of batteries of the energy storage system, the primary fire control controller can prevent the thermal runaway battery in the energy storage system from catching fire. It can be understood that a battery is prone to thermal runaway under conditions such as short circuit, overcharge and overdischarge, and thermal abuse. When a battery experiences thermal runaway, the battery will emit a large amount of heat. Therefore, the temperature of the thermal runaway battery will be higher than that of a battery in a normal state. Therefore, in an embodiment of the present disclosure, the energy storage controller can determine whether there is a thermal runaway battery in the plurality of batteries of the energy storage system by using temperature information corresponding to each of the plurality of batteries of the energy storage system.

[0078] In some embodiments, the energy storage system comprises a temperature monitoring system, and the energy storage controller is communicatively connected with the temperature monitoring system. The temperature monitoring system is configured to detect temperature information of the plurality of batteries of the energy storage system, and send the temperature information of the plurality of batteries to the energy storage controller in response to a temperature acquisition instruction issued by the energy storage controller. Thus, the energy storage controller can determine whether there is a thermal runaway battery in the plurality of batteries based on the temperature information of the plurality of batteries.

[0079] In some embodiments, the energy storage controller and the temperature monitoring system, and the energy storage controller and the primary fire control controller are communicatively connected by optical fibers, and support at least one of the following protocols: IEC60044-8 protocol, Ethernet protocol, and Fibre Channel protocol.

[0080] In some embodiments, the energy storage controller stores a preset temperature threshold, and determines whether there is a thermal runaway battery in the plurality of batteries by comparing the temperature information of the plurality of batteries with the temperature threshold, i.e., the battery with temperature information greater than the temperature threshold is regarded as a thermal runaway battery. Because a thermal runaway battery will emit a large amount of heat and harmful gas, which may cause a battery explosion or fire, etc. Therefore, it is necessary to prevent the thermal runaway battery in the energy storage system from catching fire by the primary fire control controller.

[0081] In some embodiments, when the energy storage controller determines that there is a thermal runaway battery in the plurality of batteries based on the temperature information of the plurality of batteries, the energy storage controller can send a first fire control command to the primary fire control controller. After receiving the first fire control command, the primary fire control controller can control the fire extinguishing system to prevent the thermal runaway battery from catching fire in response to the first fire control command. In the embodiments of the present disclosure, preventing the thermal runaway battery from catching fire can be that the fire extinguishing system performs a preventive combustion treatment on the thermal runaway battery. For example, the preventive combustion treatment can be that the fire extinguishing system performs a vacuum treatment on the air around the plurality of batteries containing the thermal runaway battery, and the fire extinguishing system can be a vacuum air pump; the preventive combustion treatment can also be that the air around the plurality of batteries is discharged and inert gas is injected, and the inert gas can include at least one of helium, neon, argon, krypton, and xenon; in some embodiments, the inert gas can also be nitrogen, and the fire extinguishing system can be a device for injecting the inert gas.

[0082] In some embodiments, the energy storage controller is configured to send a first control command to the primary fire control controller when it is determined that the temperature information of the thermal runaway battery is greater than a first temperature threshold; and the primary fire control controller is configured to control the fire extinguishing system to increase the prevention intensity of preventing the thermal runaway battery from catching fire in response to the first control command.

[0083] Exemplarily, when the fire prevention of the thermal runaway battery is the vacuumization of the air around the plurality of batteries by the fire fighting system, the prevention strength can correspond to the power of the vacuumization. When the fire prevention of the thermal runaway battery is the discharge of the air around the plurality of batteries and the injection of non-combustible gas, the prevention strength can correspond to the circulating power of the discharge of the air and the injection of the non-combustible gas.

[0084] In the embodiments of the present disclosure, the energy storage controller can control the first fire fighting controller to increase the prevention strength of the fire prevention of the thermal runaway battery as the temperature information of the thermal runaway battery continuously increases. In this way, the prevention strength of the fire prevention of the thermal runaway battery can be adjusted according to the actual situation of the temperature of the thermal runaway battery, so as to prevent the fire of the thermal runaway battery by using the prevention strength matched with the temperature of the thermal runaway battery, thereby improving the effect of the fire prevention of the thermal runaway battery.

[0085] In some embodiments, when the energy storage controller determines that there is a thermal runaway battery in the plurality of batteries based on the temperature information of the plurality of batteries, the energy storage controller can also send the first fire fighting command to the second fire fighting controller. The second fire fighting controller can control the fire fighting system to suppress the spread of the fire of the thermal runaway battery in response to the first fire fighting command after receiving the first fire fighting command. That is, after determining that there is a thermal runaway battery in the plurality of batteries, the fire prevention process can be not performed, and the second fire fighting controller can be directly controlled to suppress the spread of the fire of the thermal runaway battery. The suppression of the spread of the fire of the thermal runaway battery can be that the second fire fighting controller controls the fire fighting system to perform the fire extinguishing process on the thermal runaway battery based on the position information of the thermal runaway battery. Exemplarily, the fire extinguishing process can be that the fire fighting system performs the fire extinguishing process on the thermal runaway battery by using at least one of the dry powder extinguishing agent, carbon dioxide and carbon tetrachloride. At this time, the fire fighting system can be a fire extinguishing device.

[0086] In some embodiments, even if the first fire fighting controller can prevent the thermal runaway battery from catching fire, when the thermal runaway phenomenon of the battery is relatively severe, a fire can still occur, and the spread of the fire cannot be suppressed by the first fire fighting controller at this time. Therefore, the second fire fighting controller can be used to suppress the spread of the fire of the thermal runaway battery. In the embodiments of the present disclosure, the energy storage controller can control the second fire fighting controller to suppress the spread of the fire of the thermal runaway battery. When the second fire fighting controller is directly connected in communication with the energy storage controller, the energy storage controller can directly issue a second fire fighting command to the second fire fighting controller. When the second fire fighting controller is connected in communication with the energy storage controller through the first fire fighting controller, the energy storage controller can first issue a second fire fighting command to the first fire fighting controller, and then the first fire fighting controller issues the second fire fighting command to the second fire fighting controller. The second fire fighting controller is configured to control the fire fighting system to suppress the spread of the fire of the thermal runaway battery in response to the second fire fighting command.

[0087] In some embodiments, the energy storage controller sends the second fire control command to the secondary fire control device or the primary fire control device in the case that the first fire control command is sent to the primary fire control device.

[0088] In some embodiments, the position information of the thermal runaway battery refers to a battery identifier of the thermal runaway battery, and the thermal runaway battery can be accurately located through the battery identifier, so that the secondary fire control device can accurately suppress the fire spread of the thermal runaway battery.

[0089] In some embodiments, the energy storage controller sends the second fire control command in the case that the thermal runaway battery is on fire. The thermal runaway battery can be on fire due to the fact that the fire control device corresponding to the primary fire control device cannot prevent the thermal runaway battery in the energy storage system from being on fire. In the embodiments of the present disclosure, whether the thermal runaway battery is on fire can be determined by obtaining the state information of the primary fire control device.

[0090] In some embodiments, the fire control system comprises a visual sensor, and the visual sensor can collect image information of the thermal runaway battery and send the image information to the primary fire control device and / or the energy storage controller. In the case that the primary fire control device and / or the energy storage controller determines that the thermal runaway battery is on fire based on the image information, the primary fire control device and / or the energy storage controller can add information representing that the thermal runaway battery is on fire in the state information of the primary fire control device, so that whether the thermal runaway battery is on fire can be determined by obtaining the state information of the primary fire control device.

[0091] In some embodiments, whether the thermal runaway battery is on fire can also be determined by detecting temperature information of the thermal runaway battery.

[0092] In some embodiments, when the secondary fire control device is directly connected in communication with the energy storage controller, the energy storage controller needs to control the primary fire control device to close a valve related to preventing the thermal runaway battery from being on fire before sending the second fire control command to the secondary fire control device. Exemplarily, the valve can be a valve for opening or closing a non-flammable gas pipeline. When the secondary fire control device is connected in communication with the energy storage controller through the primary fire control device, the energy storage controller can send the second fire control command to the primary fire control device in the case that the thermal runaway battery is on fire, and the primary fire control device can send the second fire control command to the secondary fire control device in the case that the valve related to preventing the thermal runaway battery from being on fire is closed.

[0093] In some embodiments, the secondary fire control device is configured to control the fire control system to increase the suppression intensity of suppressing the fire spread in response to a second control command. The second control command is sent by the energy storage controller or the primary fire control device to the secondary fire control device in the case that the temperature information of the thermal runaway battery is greater than a second temperature threshold or the temperature information of a surrounding battery of the thermal runaway battery is greater than the second temperature threshold.

[0094] Exemplarily, in the case that the fire spreading is suppressed by the fire extinguishing system through the fire extinguishing agent, the suppression intensity corresponds to the amount of the fire extinguishing agent sprayed by the fire extinguishing system to the fire object, and the greater the suppression intensity, the greater the amount of the fire extinguishing agent sprayed by the fire extinguishing system to the fire object.

[0095] In the embodiments of the present disclosure, the energy storage controller can control the secondary fire control controller to increase the suppression intensity of suppressing the fire spreading of the thermal runaway battery as the temperature information of the thermal runaway battery continuously increases. In this way, the suppression intensity of suppressing the fire spreading can be adjusted according to the actual situation of the temperature of the thermal runaway battery, so as to suppress the fire spreading by using the suppression intensity matched with the temperature of the thermal runaway battery, thereby improving the effect of suppressing the fire spreading.

[0096] In some embodiments, when the energy storage system is a high-voltage direct-current direct-hanging energy storage valve, the energy storage controller can be an energy storage valve secondary control protection system (EVBC). In other embodiments, when the energy storage system is other systems including multiple batteries, the energy storage controller can be any module capable of receiving input signals and generating control signals according to preset algorithms, control strategies and feedback signals.

[0097] In some embodiments, the high-voltage direct-current direct-hanging energy storage valve includes multiple energy storage sub-modules; each energy storage sub-module includes at least one battery module; each battery module includes multiple electric cabinets; each electric cabinet includes multiple electric boxes; and each electric box includes multiple batteries. The energy storage control system provided by the embodiments of the present disclosure is used to prevent multiple batteries in the high-voltage direct-current direct-hanging energy storage valve from catching fire and suppress the fire spreading in the case of fire.

[0098] In some embodiments, the fire control controller can further include a tertiary fire control controller; the energy storage controller is configured to send a third fire control command to the tertiary fire control controller in the case that the thermal runaway battery catches fire and the fire of the thermal runaway battery spreads; and the tertiary fire control controller is configured to control the fire extinguishing system to perform a fire delay treatment on the energy storage system in response to the third fire control command.

[0099] In the embodiments of the present disclosure, the energy storage controller can obtain state information corresponding to the primary fire control controller and the secondary fire control controller respectively, and the energy storage controller sends a third fire control command to the tertiary fire control controller in the case that the thermal runaway battery catches fire based on the state information of the primary fire control controller and the fire of the thermal runaway battery spreads based on the state information of the secondary fire control controller, so that the tertiary fire control controller controls the fire extinguishing system to perform a fire delay treatment on the energy storage system. The fire delay treatment can be a water spraying cooling treatment. At this time, the fire extinguishing system can be a spraying device.

[0100] In the embodiments of the present disclosure, when the thermal runaway battery has adjacent batteries, the temperature information of the adjacent batteries can be detected, and when the temperature information of the adjacent batteries is greater than the first preset temperature value, it is determined that the adjacent batteries are on fire, i.e., the fire of the thermal runaway battery is expanding.

[0101] When the thermal runaway battery has no adjacent battery or has adjacent batteries, the temperature information of the area where the thermal runaway battery exists can be detected, and if the temperature information of the area where the thermal runaway battery currently exists is much greater than the temperature information of the area where the thermal runaway battery just caught fire, i.e., the temperature of the area where the thermal runaway battery is rising, it is determined that the fire of the thermal runaway battery is expanding.

[0102] In some embodiments, the fire-fighting system described above can further include smoke alarms, and if the number of currently alarming smoke alarms is greater than the number of smoke alarms that alarmed when the thermal runaway battery caught fire, it is determined that the fire of the thermal runaway battery is expanding.

[0103] In the case where it is determined that the fire of the thermal runaway battery is expanding through the above methods, the secondary fire-fighting controller can add information representing the expansion of the fire of the thermal runaway battery in its state information, so that the expansion of the fire of the thermal runaway battery can be determined based on the state information of the secondary fire-fighting controller.

[0104] In the embodiments of the present disclosure, the thermal runaway battery is prevented from catching fire by the primary fire-fighting controller, the spread of the fire of the thermal runaway battery is suppressed by the secondary fire-fighting controller when the thermal runaway battery catches fire, and the energy storage system is subjected to fire delay treatment by the tertiary fire-fighting controller when the thermal runaway battery catches fire and the fire of the thermal runaway battery expands. In this way, the embodiments of the present disclosure can achieve multi-level fire-fighting in-depth defense, i.e., the battery does not catch fire, does not leak, and does not leave flammable gas in the battery module after thermal runaway. In the case where the battery catches fire due to special reasons, the fire can be quickly detected and effectively extinguished. From the system level, the further spread of the fire to other adjacent batteries or buildings is prevented. The storage system can be normal and normal shutdown in the case of fire.

[0105] In some embodiments, at least two of the energy storage controller, the primary fire-fighting controller, the secondary fire-fighting controller, and the tertiary fire-fighting controller can be integrated together. That is, the different controllers described above can be integrated together according to different application scenarios. In this way, the flexibility of the energy storage control system can be improved.

[0106] In some embodiments, the energy storage control system further includes a fire-fighting alarm system; the fire-fighting alarm system is in communication connection with the secondary fire-fighting controller; and

[0107] The fire-fighting alarm system is configured to send, in the case of a thermal runaway battery fire, a start-up preparation information to the energy storage controller, the start-up preparation information being indicative of a preparation for starting a secondary fire-fighting controller;

[0108] The energy storage controller is configured to send, in response to the start-up preparation information, a message to the fire-fighting alarm system, the message being indicative of a stop of the energy storage system;

[0109] The fire-fighting alarm system is configured to send, in response to the message indicative of the stop of the energy storage system, a second fire-fighting command to the secondary fire-fighting controller.

[0110] In the embodiments of the present disclosure, because the secondary fire-fighting controller will affect the energy storage system in a running state when it is started, in order to avoid damaging the energy storage system due to the start of the secondary fire-fighting controller, the energy storage system needs to be controlled to stop running first.

[0111] In some embodiments, as shown in FIG. 2, the fire-fighting alarm system 130 is communicatively connected with the tertiary fire-fighting controller 123 and the secondary fire-fighting controller 122, respectively; wherein,

[0112] The secondary fire-fighting controller is further configured to send, to the fire-fighting alarm system, state information of the secondary fire-fighting controller;

[0113] The fire-fighting alarm system is configured to send, in the case of a thermal runaway battery fire, a start-up preparation information to the energy storage controller, the start-up preparation information being indicative of a preparation for starting a secondary fire-fighting controller;

[0114] In the embodiments of the present disclosure, the energy storage control system is provided with a fire-fighting alarm system independent of the energy storage controller, and the tertiary fire-fighting controller can also be controlled by the fire-fighting alarm system to perform fire delay treatment on the energy storage system.

[0115] In some embodiments, when the fire-fighting alarm system sends the third fire-fighting command to the tertiary fire-fighting controller, the tertiary fire-fighting controller can feed back to the energy storage controller that the fire-fighting alarm system has sent the third fire-fighting command feedback information, and the energy storage controller can no longer send the third fire-fighting command to the tertiary fire-fighting controller after receiving the feedback information.

[0116] In some embodiments, when the fire-fighting alarm system sends the third fire-fighting command to the tertiary fire-fighting controller, the tertiary fire-fighting controller can also not send the above feedback information to the energy storage controller, and at this time the tertiary fire-fighting controller can receive the third fire-fighting command sent by the fire-fighting alarm system and the energy storage controller, and thus control the fire-fighting system to perform fire delay treatment on the energy storage system in response to the third fire-fighting command.

[0117] In some embodiments, the fire-fighting alarm system can also be communicatively connected with the primary fire-fighting controller; wherein,

[0118] The primary fire control controller is also configured to send state information of the primary fire control controller to the fire alarm system.

[0119] The secondary fire control controller is also configured to send state information of the secondary fire control controller to the fire alarm system.

[0120] The fire alarm system is configured to send a third fire control command to the tertiary fire control controller in a case where the primary fire control controller determines that the thermal runaway battery is on fire based on the state information of the primary fire control controller and the secondary fire control controller determines that the thermal runaway battery is expanding based on the state information of the secondary fire control controller.

[0121] In the embodiments of the present disclosure, the fire alarm system that works independently of the relative energy storage controller can obtain the state information of the primary fire control controller and the secondary fire control controller, and determine whether to send a third fire control command to the tertiary fire control controller according to the state information of the two. In this way, the state information of the primary fire control controller and the state information of the secondary fire control controller are used to determine whether to start the tertiary fire control controller, which can improve the accuracy of executing the fire delay treatment.

[0122] In some embodiments, the fire alarm system is further configured to determine fault information of the secondary fire control controller and fault information of the tertiary fire control controller based on the state information of the secondary fire control controller and the state information of the tertiary fire control controller, respectively, and output an alarm information based on the fault information of the secondary fire control controller and the fault information of the tertiary fire control controller.

[0123] In the embodiments of the present disclosure, in a case where the secondary fire control controller or the tertiary fire control controller is started, the secondary fire control controller or the tertiary fire control controller can send its own start information to the fire alarm system, and the fire alarm system can monitor the start state of the secondary fire control controller or the tertiary fire control controller based on the start information, which is used to represent whether the secondary fire control controller or the tertiary fire control controller is started normally.

[0124] In the embodiments of the present disclosure, the fire alarm system can obtain the state information of the secondary fire control controller and the tertiary fire control controller in real time, determine fault information representing that the secondary fire control controller and the tertiary fire control controller are in a fault state based on the respective state information, and then output an alarm information based on the respective fault information to prompt the user. In some embodiments, the above state information can be start information of the secondary fire control controller and the tertiary fire control controller, and through the start information, it can be determined whether the secondary fire control controller and / or the tertiary fire control controller is started normally. In a case where the secondary fire control controller and / or the tertiary fire control controller is not started normally, the corresponding fault information is generated.

[0125] In some embodiments, in the case that the fire alarm system is communicatively connected with the first fire control unit, the fire alarm system is further configured to determine the failure information of the first fire control unit based on the state information of the first fire control unit, and output the alarm information based on the failure information of the first fire control unit. In some embodiments, the state information can be the start information of the first fire control unit, by which it can be determined whether the first fire control unit is started normally. In the case that the first fire control unit is not started normally, the failure information of the first fire control unit is generated.

[0126] In some embodiments, the energy storage control system further comprises a background monitoring system, which is connected with one or more of the following modules through at least two different communication modes, wherein the background monitoring system is configured to monitor the state information of one or more of the following modules; the modules include the energy storage controller, the first fire control unit, the second fire control unit, the third fire control unit, and the fire alarm system.

[0127] In the embodiments of the present disclosure, the background monitoring system can be communicatively connected with multiple modules through two different communication modes. The two different communication modes can be two networks of different frequency bands, for example, A network using A frequency band and B network using B frequency band. In some embodiments, the background monitoring system can be communicatively connected with the A network and the B network using IEC61850 protocol, and at least one of the energy storage controller, the first fire control unit, the second fire control unit, the third fire control unit, and the fire alarm system can be communicatively connected with the A network and the B network using IEC61850 protocol. In this way, the background monitoring system is communicatively connected with multiple modules through different networks, thereby improving the stability of data communication.

[0128] In the embodiments of the present disclosure, the background monitoring system, the fire alarm system, and the multi-level fire control unit in the energy storage control system are connected, which can realize reliable monitoring and early warning of multiple backgrounds, improve the sensitivity of the energy storage control system in multiple dimensions, and improve the safety of the energy storage system.

[0129] In some embodiments, the energy storage controller comprises at least two energy storage sub-controllers which are communicatively connected with each other, and each energy storage sub-controller is communicatively connected with a temperature monitoring system of the energy storage system; one of the at least two energy storage sub-controllers is a master energy storage controller; the master energy storage controller is determined based on the health states of the at least two energy storage sub-controllers.

[0130] In some embodiments, each of the at least two energy storage sub-controllers can be communicatively connected with the primary fire main controller, and communicatively connected with at least one of the secondary fire main controller and the tertiary fire main controller. In this embodiment, only the energy storage controller is redundantly arranged, and the rest of the fire main controllers are each a single controller.

[0131] In the embodiments of the present disclosure, the energy storage controller can be redundantly arranged, that is, at least two identical energy storage sub-controllers are arranged, the at least two identical energy storage sub-controllers are communicatively connected with each other, and each energy storage sub-controller is communicatively connected with the temperature monitoring system. That is, each energy storage sub-controller can obtain the temperature information of each battery of the energy storage system, so that each energy storage sub-controller can determine whether there is a thermal runaway battery in the energy storage system, and then control the primary fire controller to prevent the thermal runaway battery in the energy storage system from catching fire. That is, each energy storage sub-controller can perform all the functions of the energy storage controller described in the above embodiments. In actual application, the above functions are realized by a main energy storage controller in the at least two energy storage sub-controllers, when the health state of the main energy storage controller is poor, the energy storage sub-controller with a better health state can be switched to the main energy storage controller to continue working. In this way, by redundantly arranging the energy storage controller, the stability of the energy storage control system can be improved, and the situation that the entire energy storage control system stops working due to the failure of the energy storage controller is reduced. Exemplarily, the number of energy storage sub-controllers can be more than 3.

[0132] In the embodiments of the present disclosure, the main energy storage controller can be determined based on the health states of the at least two energy storage sub-controllers. In some embodiments, the main energy storage controller can be determined based on the health levels of the energy storage sub-controllers for representing the health states of the energy storage sub-controllers. Exemplarily, the energy storage sub-controller with the highest health level can be taken as the main energy storage controller. In some embodiments, the subject for determining the main energy storage controller can be any one of the at least two energy storage sub-controllers, or can be another controller in the energy storage controller.

[0133] In the embodiments of the present disclosure, after the main energy storage controller is determined in the at least two energy storage sub-controllers, the main energy storage controller realizes the functions of the energy storage controller mentioned in the above embodiments, and the rest of the energy storage sub-controllers are standby energy storage controllers. When the health level corresponding to the health state of the main energy storage controller is less than the health level of the standby energy storage controller, the energy storage sub-controller with the highest health level in the standby energy storage controllers can be taken as a new main energy storage controller.

[0134] In some embodiments, the primary fire control controller comprises at least two primary fire sub-controllers which are communicatively connected to each other; each of the primary fire sub-controllers is communicatively connected to each of the energy storage sub-controllers; one of the at least two primary fire sub-controllers is a primary fire master controller; the primary fire master controller is determined based on the health status of the at least two primary fire sub-controllers respectively.

[0135] In some embodiments, when the energy storage controller is a single controller, each of the at least two primary fire sub-controllers can be communicatively connected to the energy storage controller.

[0136] In the embodiments of the present disclosure, the primary fire controller can also be redundantly arranged, and each of the at least two primary fire sub-controllers can realize the functions of the primary fire controller as described in the above embodiments. Exemplarily, the number of the primary fire sub-controllers can be more than 3.

[0137] In the embodiments of the present disclosure, the method of determining the primary fire master controller among the at least two primary fire sub-controllers is the same as the method of determining the master energy storage controller among the at least two energy storage sub-controllers.

[0138] In some embodiments, as shown in FIG. 3, the at least two energy storage sub-controllers in the energy storage controller 110 comprise a first energy storage sub-controller 1101 and a second energy storage sub-controller 1102 which are communicatively connected to each other; the at least two primary fire sub-controllers in the primary fire controller 121 comprise a first primary fire sub-controller 1211 and a second primary fire sub-controller 1212 which are communicatively connected to each other; the first primary fire sub-controller 1211 and the second primary fire sub-controller 1212 are respectively communicatively connected to the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102; and the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102 are communicatively connected to the energy storage system 200.

[0139] In the embodiments of the present disclosure, the energy storage controller and the primary fire controller are each provided with two sub-controllers which are communicatively connected to each other, thereby realizing the cross-redundancy connection arrangement of the energy storage controller and the primary fire controller, and improving the stability of the energy storage control system.

[0140] In some embodiments, the secondary fire control controller comprises at least two secondary fire sub-controllers which are communicatively connected to each other; each of the secondary fire sub-controllers is communicatively connected to each of the energy storage sub-controllers; one of the at least two secondary fire sub-controllers is a secondary fire master controller; the secondary fire master controller is determined based on the health status of the at least two secondary fire sub-controllers respectively.

[0141] In the embodiments of the present disclosure, the secondary fire control device can also be redundantly arranged, and each of the at least two secondary fire sub-controllers can realize the functions of the secondary fire control device as described in the above embodiments. For example, the number of secondary fire sub-controllers can be more than 3.

[0142] In some embodiments, as shown in FIG. 4, the at least two secondary fire sub-controllers in the secondary fire control device 122 include a first secondary fire sub-controller 1221 and a second secondary fire sub-controller 1222; the first secondary fire sub-controller 1221 is respectively connected with the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102; and the second secondary fire sub-controller 1222 is respectively connected with the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102.

[0143] In the embodiments of the present disclosure, the secondary fire control device is provided with two fire sub-controllers, and both of them are connected with the two energy storage sub-controllers of the energy storage controller, realizing the cross-redundancy connection of the energy storage controller and the secondary fire control device, thereby improving the stability of the energy storage control system.

[0144] In some embodiments, as shown in FIG. 5, the first energy storage sub-controller 1101 in the energy storage controller 110 is connected with the primary fire control device 121, the secondary fire control device 122 and the tertiary fire control device 123; the second energy storage sub-controller 1102 in the energy storage controller 110 is connected with the primary fire control device 121, the secondary fire control device 122 and the tertiary fire control device 123; and the fire alarm system 130 is connected with the primary fire control device 121, the secondary fire control device 122 and the tertiary fire control device 123.

[0145] In the embodiments of the present disclosure, only the energy storage controller is redundantly arranged, the primary fire control device, the secondary fire control device and the tertiary fire control device are all single controllers, and each energy storage sub-controller in the energy storage controller is connected with the primary fire control device, the secondary fire control device and the tertiary fire control device. In this way, each fire control device can be controlled by the energy storage sub-controller. And the fire alarm system is also connected with the primary fire control device, the secondary fire control device and the tertiary fire control device, so that each fire control device can be controlled by the fire alarm system. Through the above arrangement, two sets of control schemes for each fire control device are provided in the energy storage control system, thereby improving the stability of the energy storage control system.

[0146] In the embodiments of the present disclosure, the first energy storage sub-controller and the second energy storage sub-controller in the energy storage controller can realize cross-redundancy connection with the first fire control controller, the second fire control controller and the third fire control controller, thereby improving the stability of the energy storage control system. The fire alarm system is in communication connection with the first fire control controller, the second fire control controller and the third fire control controller, so that the fire alarm system can control the operation of the first fire control controller, the second fire control controller and the third fire control controller, and in the case that the energy storage controller has a problem, the fire alarm system can control each fire control controller, thereby improving the stability of the operation of the energy storage control system.

[0147] In some embodiments, as shown in FIG. 6, the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102 in the energy storage controller 110 are in communication connection with the fire alarm system 130 through two communication links respectively; the fire alarm system 130 is in communication connection with the first fire control controller 121, the second fire control controller 122 and the third fire control controller 123 respectively.

[0148] In the embodiments of the present disclosure, only the energy storage controller is redundantly arranged, the first fire control controller, the second fire control controller and the third fire control controller are all single controllers, and each energy storage sub-controller (i.e. the first energy storage sub-controller and the second energy storage sub-controller) in the energy storage controller is in communication connection with the first fire control controller, the second fire control controller and the third fire control controller through the fire alarm system respectively. In this way, when the master energy storage sub-controller in the first energy storage sub-controller and the second energy storage sub-controller issues a control instruction to at least one of the first fire control controller, the second fire control controller and the third fire control controller, it needs to pass through the fire alarm system, so as to improve the accuracy of controlling the fire control controller. And each energy storage sub-controller in the energy storage controller is in communication connection with the fire alarm system through two communication links. In this way, the stability of the communication between the energy storage sub-controller and the fire alarm system can be improved.

[0149] In some embodiments, the first fire control controller comprises a gas monitoring system, a combustion prevention treatment system and a control system; the gas monitoring system is used to detect the concentration of combustible gas in the energy storage system; the control system is used to control the combustion prevention treatment system to perform combustion prevention treatment on the energy storage system to reduce the concentration of combustible gas when the concentration of combustible gas is greater than a preset value.

[0150] In the embodiments of the present disclosure, the combustion prevention treatment system can reduce the concentration of combustible gas in the energy storage system in the case that there is a thermal runaway battery in the plurality of batteries, thereby reducing the case that the battery catches fire due to thermal runaway.

[0151] In some embodiments, as shown in FIG. 7, the above-mentioned energy storage control system includes an energy storage controller 110, a first fire control controller 121, a second fire control controller 122, a third fire control controller 123, a fire alarm system 130, and a background monitoring system 140. The energy storage controller 110 is communicatively connected with the temperature monitoring system 201 in the energy storage system 200; the energy storage controller 110, the first fire control controller 121, and the second fire control controller 122 are sequentially communicatively connected; the second fire control controller 122 and the third fire control controller 123 are communicatively connected with the fire alarm system 130; the background monitoring system 140 is communicatively connected with the energy storage controller 110 and the first fire control controller 121 through two different communication modes; wherein,

[0152] The energy storage controller 110 is configured to acquire temperature information of a plurality of batteries in the energy storage system 200 through the temperature monitoring system 201; and in a case where it is determined based on the temperature information that there is a thermal runaway battery in the plurality of batteries, issue a first fire control command to the first fire control controller 121.

[0153] The first fire control controller 121 is configured to, in response to the first fire control command, discharge air in the energy storage system 200 and inject non-flammable gas into the energy storage system 200 to prevent the thermal runaway battery from catching fire.

[0154] The energy storage controller 110 is configured to, in a case where the first fire control controller 121 fails, issue a second fire control command to the first fire control controller 121 and control the energy storage system 200 to stop running; wherein the second fire control command carries position information of the thermal runaway battery. Wherein, the failure of the first fire control controller indicates that the thermal runaway battery has caught fire.

[0155] The first fire control controller 121 is configured to, in a case where a valve related to preventing the thermal runaway battery from catching fire is closed, send the second fire control command to the second fire control controller 122.

[0156] The second fire control controller 122 is configured to, in response to the second fire control command, perform fire extinguishing treatment on the thermal runaway battery based on the position information of the thermal runaway battery.

[0157] The energy storage controller 110 is configured to, in a case where both the first fire control controller 121 and the second fire control controller 122 fail, control the third fire control controller 123 to spray water on the energy storage system to reduce the temperature of the energy storage system. In some embodiments, the third fire control controller 123 can also be controlled by the fire alarm control system 130 to spray water on the energy storage system to reduce the temperature of the energy storage system. Wherein, the failure of the second fire control controller indicates that the thermal runaway battery has expanded the fire.

[0158] The background monitoring system 140 is configured to monitor the running states of the energy storage controller 110 and the first fire control controller 121.

[0159] In some embodiments, the fire alarm control system is provided with a manual control mode for manually starting the fire control controller, when the fire alarm control system is in the manual control mode, manual operation of the secondary fire control controller and the tertiary fire control controller is supported.

[0160] In some embodiments, the fire alarm control system controls the secondary fire control controller to extinguish the thermal runaway battery in case of fire, and controls the tertiary fire control controller to spray water to cool the energy storage system in case of fire expansion of the thermal runaway battery.

[0161] In some embodiments, before the fire alarm control system starts the secondary fire control controller, the starting information of the secondary fire control controller needs to be fed back to the energy storage controller, and in case of determination that the energy storage controller controls the energy storage system to stop running, the secondary fire control controller is controlled to extinguish the thermal runaway battery.

[0162] In some embodiments, the above-mentioned primary fire control controller includes a nitrogen protection system (NPS), a flammable gas and oxygen monitoring system, and a control system; wherein,

[0163] The nitrogen protection system is used to reduce the oxygen concentration and flammable gas concentration in the energy storage system, inhibit the occurrence of fire and explosion, and achieve active fire prevention and explosion prevention. The main components of the nitrogen protection system include: a circulating replacement module, a gas detection module, an operating parameter monitoring module, a pressure stabilizing and filtering module, a nitrogen generation and storage module, and a fire control module.

[0164] The flammable gas and oxygen monitoring system is used to detect the gas concentration in the energy storage system cabin and transmit the concentration alarm signal to the control system.

[0165] The control system receives the gas concentration alarm signal, starts the exhaust system and the nitrogen injection system to inject high-concentration nitrogen into the energy storage system cabin, so that the cabin is in a relative positive pressure state, which is used to reduce the oxygen concentration inside the energy storage system cabin and maintain the flammable gas concentration at the lower limit of explosion, thereby preventing the energy storage system from catching fire or exploding, and achieving the purpose of inerting inhibition.

[0166] In some embodiments, the communication connection between the energy storage system and the energy storage controller, between the energy storage controller and the first fire control controller, is implemented by using the communication protocol IEC60044-8; the communication connection between the first fire control controller and the second fire control controller is implemented by using at least one of the network communication interfaces of RS232 and RS485; the communication connection between the second fire control controller and the fire alarm system, between the third fire control controller and the fire alarm system, is implemented by using a conventional communication protocol; for example, the conventional communication protocol can include at least one of the following: Cycle Distance Transmission (CDT), POLLING, and network communication protocol.

[0167] In some embodiments, the two different communication modes for the communication connection between the background monitoring system and the energy storage controller and the first fire control controller can be A network and B network; wherein the background monitoring system, the energy storage controller and the first fire control controller are all connected to the A network and the B network by using the communication protocol IEC61850.

[0168] Fig. 8 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure, which is different from the energy storage control system shown in Fig. 7 in that the fire alarm system 130 in Fig. 8 is further connected to the first fire control controller 121. In this way, the fire alarm system can control the start of the first fire control controller.

[0169] In some embodiments, the communication connection between the fire alarm system and the first fire control controller is implemented by using a conventional communication protocol.

[0170] Fig. 9 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure, which is different from the energy storage control system shown in Fig. 7 in that the energy storage controller 110 and the first fire control controller 121 in Fig. 7 are both single controllers, the energy storage controller 110 in Fig. 9 includes a first energy storage sub-controller 1101 and a second energy storage sub-controller 1102 which are connected to each other, and the first fire control controller 121 includes a first first fire control sub-controller 1211 and a second first fire control sub-controller 1212 which are connected to each other; wherein the first energy storage sub-controller 1101 is connected to the first first fire control sub-controller 1211 and the second first fire control sub-controller 1212 respectively, and the second energy storage sub-controller 1102 is connected to the first first fire control sub-controller 1211 and the second first fire control sub-controller 1212 respectively.

[0171] In some embodiments, the communication connection between the energy storage sub-controller in the energy storage controller and the fire control sub-controller in the first fire control controller is implemented by using the communication protocol IEC60044-8.

[0172] In the embodiments of the present disclosure, the temperature detection system in the energy storage controller and the energy storage system is connected in dual-channel redundancy, and the energy storage controller and the primary fire control controller are cross-connected in redundancy, thereby improving the stability and reliability of the energy storage control system.

[0173] FIG. 10 is a schematic diagram of a component structure of an energy storage control system according to an embodiment of the present disclosure. Compared with the energy storage control system shown in FIG. 9, the difference between the energy storage control system shown in FIG. 10 is that the fire alarm system 130 is further connected in communication with the primary fire control controller 121.

[0174] In some embodiments, the fire alarm system is connected in communication with the first primary fire sub-controller and the second primary fire sub-controller in the primary fire control controller, respectively.

[0175] FIG. 11 is a schematic diagram of a component structure of an energy storage control system according to an embodiment of the present disclosure. The energy storage control system includes an energy storage controller 110, a primary fire control controller 121, a secondary fire control controller 122, a tertiary fire control controller 123, a fire alarm system 130, and a background monitoring system 140. The energy storage controller 110 includes a first energy storage sub-controller 1101 and a second energy storage sub-controller 1102 connected in communication with each other, and the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102 are connected in communication with the temperature monitoring system 201 in the energy storage system 200. The primary fire control controller 121 includes a first primary fire sub-controller 1211 and a second primary fire sub-controller 1212 connected in communication with each other, and the secondary fire control controller 122 includes a first secondary fire sub-controller 1221 and a second secondary fire sub-controller 1222 connected in communication with each other. The first energy storage sub-controller 1101, the second energy storage sub-controller 1102, the first primary fire sub-controller 1211, the second primary fire sub-controller 1212, the first secondary fire sub-controller 1221, and the second secondary fire sub-controller 1222 are connected in communication with each other. The primary fire control controller 121 and the secondary fire control controller 122 are connected in communication with the fire alarm system 130. The fire alarm system 130 is connected in communication with the tertiary fire control controller 123. The energy storage controller 110, the primary fire control controller 121, and the secondary fire control controller 122 are connected in communication with the background monitoring system 140 through two different communication modes. Among them,

[0176] The first energy storage sub-controller 1101 and the second energy storage sub-controller 1102 can realize the functions of the energy storage controller in the above embodiments. The first primary fire sub-controller 1211 and the second primary fire sub-controller 1212 can realize the functions of the primary fire control controller in the above embodiments. The first secondary fire sub-controller 1221 and the second secondary fire sub-controller 1222 can realize the functions of the secondary fire control controller in the above embodiments.

[0177] In the embodiment of the present disclosure, because the first fire control controller, the second fire control controller and the third fire control controller are in communication connection with the fire alarm system, the fire alarm system can control the starting of the first fire control controller, the second fire control controller and the third fire control controller, and detect the running state of the first fire control controller, the second fire control controller and the third fire control controller.

[0178] In the embodiment of the present disclosure, the temperature monitoring system and the energy storage sub-controller in the energy storage controller are in double-path redundant connection, the energy storage sub-controller in the energy storage controller and the fire control sub-controller in the first fire control controller, the fire control sub-controller in the second fire control controller are in cross-redundant connection, the first fire control controller, the second fire control controller and the third fire control controller are in regular communication connection with the fire alarm system, and the energy storage controller and the first fire control controller, the second fire control controller are in communication connection with the background monitoring system through A network and B network.

[0179] FIG. 12 is a schematic diagram of the composition structure of an energy storage control system according to an embodiment of the present disclosure. As shown in FIG. 12, the energy storage controller 110 includes a first energy storage sub-controller 1101 and a second energy storage sub-controller 1102 in communication connection with each other, the first energy storage sub-controller 1101 is in communication connection with the first fire control controller 121, the second fire control controller 122 and the third fire control controller 123; the fire alarm system 130 is in communication connection with the first fire control controller 121, the second fire control controller 122 and the third fire control controller 123; and the energy storage controller 110 and the fire alarm system 130 are in communication connection with the background monitoring system 140 through two different communication modes.

[0180] In the embodiment of the present disclosure, the first energy storage sub-controller and the second energy storage sub-controller in the energy storage controller are in communication connection with the third fire control controller, so that the energy storage controller can directly issue a third fire control command to the third fire control controller in the case of thermal runaway battery fire and thermal runaway battery fire expansion, so that the third fire control controller responds to the third fire control command to perform water spraying cooling treatment on the energy storage system.

[0181] In the embodiment of the present disclosure, the temperature monitoring system and the energy storage sub-controller in the energy storage controller are in double-path redundant connection, the energy storage sub-controller in the energy storage controller is in cross-redundant connection with the first fire control controller, the second fire control controller and the third fire control controller, the first fire control controller, the second fire control controller and the third fire control controller are in regular communication connection with the fire alarm system, and the energy storage controller and the fire alarm system are in communication connection with the background monitoring system through A network and B network.

[0182] Fig. 13 is a schematic diagram of a composition structure of a kind of energy storage control system provided by the embodiment of the present disclosure; as shown in Fig. 13, the energy storage controller 110 includes the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102 connected with each other in communication, the first energy storage sub-controller 1101 and the second energy storage sub-controller 1102 are connected with the fire-fighting alarm system 130 in communication through two-way communication link, the fire-fighting alarm system 130 is connected with the first-level fire-fighting controller 121, the second-level fire-fighting controller 122 and the third-level fire-fighting controller 123 in communication; the energy storage controller 110 and the fire-fighting alarm system 130 are connected with the background monitoring system 140 in communication through two different communication modes.

[0183] In the embodiment of the present disclosure, the temperature monitoring system and the energy storage sub-controller in the energy storage controller are connected in dual-redundancy, the energy storage sub-controller in the energy storage controller and the fire alarm control system are cross-redundantly connected, the first-level fire-fighting controller, the second-level fire-fighting controller and the third-level fire-fighting controller are all connected with the fire-fighting alarm system in conventional communication, and the energy storage controller and the fire alarm control system are both connected with the background monitoring system in communication through the A network and the B network.

[0184] Fig. 14 is a schematic diagram of a composition structure of a kind of energy storage control system provided by the embodiment of the present disclosure; compared with the energy storage control system shown in Fig. 12, the difference lies in that the first-level fire-fighting controller 121 and the second-level fire-fighting controller 122 are also connected with the background monitoring system 140 in communication through two different communication modes.

[0185] In some embodiments, in order to monitor the running state of the third-level fire-fighting controller by the background monitoring system, the third-level fire-fighting controller can also be connected with the background monitoring system in communication through two different communication modes.

[0186] In the embodiment of the present disclosure, the temperature monitoring system and the energy storage sub-controller in the energy storage controller are connected in dual-redundancy, the first-level fire-fighting controller, the second-level fire-fighting controller and the third-level fire-fighting controller are all connected with the fire-fighting alarm system in conventional communication; the energy storage controller and the first-level fire-fighting controller, the second-level fire-fighting controller are all connected with the background monitoring system in communication through the A network and the B network.

[0187] In some embodiments, the embodiment of the present disclosure also provides an energy storage control method, which is applied to the energy storage controller in the energy storage control system, and the energy storage control system also includes a fire-fighting controller; the fire-fighting controller includes a first-level fire-fighting controller and a second-level fire-fighting controller; the first-level fire-fighting controller is connected with the energy storage controller in communication; the second-level fire-fighting controller is connected with at least one of the first-level fire-fighting controller and the energy storage controller in communication; as shown in Fig. 15, the method includes steps S1501 to S1504, wherein:

[0188] At step S1501, temperature information of the plurality of batteries of the energy storage system is acquired.

[0189] In the embodiments of the present disclosure, the energy storage controller is in communication connection with the temperature monitoring system in the energy storage system, so that the energy storage controller can obtain the temperature information corresponding to the plurality of batteries respectively through the temperature monitoring system.

[0190] At step S1502, whether there is a thermal runaway battery in the plurality of batteries is determined based on the temperature information of the plurality of batteries.

[0191] Here, the thermal runaway refers to a phenomenon that, in the process of charging or discharging of the battery, due to a series of chemical reactions occurring inside the battery, the temperature of the battery rapidly rises and exceeds the normal working temperature range, so that the battery cannot be controlled. Therefore, by determining whether the temperature information of the plurality of batteries is in the normal working temperature range, whether there is a thermal runaway battery in the plurality of batteries can be determined.

[0192] At step S1503, the primary fire control controller is controlled to prevent the thermal runaway battery from catching fire in the case that there is a thermal runaway battery in the plurality of batteries.

[0193] In the embodiments of the present disclosure, when there is a thermal runaway battery in the plurality of batteries, the thermal runaway battery needs to be handled in time to reduce the possibility of the thermal runaway battery catching fire. Therefore, the energy storage controller can control the primary fire control controller to prevent the thermal runaway battery from catching fire.

[0194] In some embodiments, the primary fire control controller preventing the thermal runaway battery from catching fire refers to preventing the whole energy storage system or a subzone containing the thermal runaway battery from catching fire. Exemplarily, the prevention of catching fire can be a vacuum treatment on the air around the plurality of batteries containing the thermal runaway battery, or can be that the air around the plurality of batteries is discharged and non-combustible gas is injected, the non-combustible gas can be inert gas, and the inert gas can include at least one of helium, neon, argon, krypton and xenon; in some embodiments, the non-combustible gas can also be nitrogen.

[0195] In some embodiments, the above step S1503 can include: in the case that there is a thermal runaway battery in the plurality of batteries, sending a first fire control command to the primary fire control controller; and the primary fire control controller is configured to control the fire control system to prevent the thermal runaway battery from catching fire in response to the first fire control command.

[0196] In the embodiments of the present disclosure, because the primary fire control controller is in communication connection with the energy storage controller, the energy storage controller can directly issue the first fire control command to the primary fire control controller, so that the primary fire control controller controls the fire control system to prevent the thermal runaway battery from catching fire.

[0197] In some embodiments, when the energy storage control system comprises a fire alarm system, and the energy storage controller is communicatively connected with the primary fire controller through the fire alarm system, the energy storage controller can first send a first fire command to the fire alarm system, and then the fire alarm system sends the first fire command to the primary fire controller.

[0198] In step S1504, the secondary fire controller is controlled to suppress the spread of the fire of the thermal runaway battery in the case of fire of the thermal runaway battery.

[0199] In the embodiments of the present disclosure, although the primary fire controller has prevented the thermal runaway battery from catching fire, the thermal runaway battery may, for various reasons, still catch fire, at which time the energy storage controller needs to control the secondary fire controller to suppress the spread of the fire of the thermal runaway battery through the fire system, so as to reduce the situation that the entire energy storage system catches fire due to the thermal runaway battery catching fire. The suppression of the spread of the fire of the thermal runaway battery can be that the secondary fire controller controls the fire system to perform fire extinguishing treatment on the thermal runaway battery based on the position information of the thermal runaway battery. Exemplarily, the fire extinguishing treatment can be fire extinguishing treatment on the thermal runaway battery by at least one of dry powder extinguishing agent, carbon dioxide, and carbon tetrachloride.

[0200] In some embodiments, the energy storage controller can obtain the position information of the thermal runaway battery, so as to send the position information of the thermal runaway battery to the secondary fire controller, so that the secondary fire controller can accurately perform fire extinguishing treatment on the thermal runaway battery based on the position information. Exemplarily, the position information can be a label of the thermal runaway battery in the energy storage system.

[0201] In some embodiments, when the secondary fire controller is communicatively connected with the energy storage controller, the energy storage controller can directly issue a second fire command to the secondary fire controller to control the secondary fire controller to suppress the spread of the fire of the thermal runaway battery; in other embodiments, when the secondary fire controller is communicatively connected with the fire controller, the energy storage controller needs to first send a second fire command to the primary fire controller, and then the primary fire controller sends the first fire command to the secondary fire controller.

[0202] In the embodiments of the present disclosure, the energy storage controller can control the primary fire controller to prevent the thermal runaway battery from catching fire in the case of the thermal runaway battery in the energy storage system, and then control the secondary fire controller to perform fire extinguishing on the thermal runaway battery in the case of fire of the thermal runaway battery. In this way, temperature monitoring from the inside of the energy storage system provides early warning and processing, reducing the occurrence of the situation that the energy storage system catches fire due to thermal runaway; and the secondary fire controller can also be controlled to perform fire extinguishing on the thermal runaway battery in time when the thermal runaway battery catches fire, thereby improving the safety of the energy storage system.

[0203] In some embodiments, as shown in FIG. 16, the above-mentioned step S1504 can be implemented by step S1601.

[0204] Step S1601, in the case that the thermal runaway battery is on fire and the first fire control command is sent to the first fire control controller, a second fire control command is sent to the first fire control controller or the second fire control controller; the second fire control controller is configured to, in response to the second fire control command, control the fire extinguishing system to suppress the fire spread of the thermal runaway battery based on the position information of the thermal runaway battery carried in the second fire control command.

[0205] In the embodiments of the present disclosure, when the energy storage controller starts the first fire control controller, the first fire control controller can send its state information to the energy storage system, and the energy storage system can monitor the running state of the first fire control controller based on the state information, so as to determine that the thermal runaway battery is on fire based on the running state of the first fire control controller.

[0206] In some embodiments, the first fire control controller comprises a nitrogen protection system, and the running state of the first fire control controller comprises the running state of the nitrogen protection system. When the running state of the nitrogen protection system indicates that the nitrogen protection system is in a failure state, it is determined that the thermal runaway battery is on fire. The nitrogen protection system is configured to deliver nitrogen to the energy storage system to reduce the concentration of flammable gas in the energy storage system, thereby preventing the thermal runaway battery from being on fire.

[0207] In the embodiments of the present disclosure, when the energy storage controller sends the second fire control command to the first fire control controller or the second fire control controller, the energy storage system needs to be stopped first. When the energy storage controller is connected with the second fire control controller, the first fire control controller also needs to be controlled to close the valve. When the energy storage controller is connected with the second fire control controller through the first fire control controller, the energy storage controller sends the second fire control command to the first fire control controller, and then when the first fire control controller sends the second fire control command to the second fire control controller, the first fire control controller needs to close the valve before sending the second fire control command to the second fire control controller.

[0208] In the embodiments of the present disclosure, after the second fire control command is received, the second fire control controller can control the fire extinguishing system to suppress the fire spread of the thermal runaway battery based on the position information of the thermal runaway battery carried in the second fire control command.

[0209] In the embodiments of the present disclosure, in the case that the thermal runaway battery is on fire, the second fire control command including the position information of the thermal runaway battery can be sent to the second fire control controller, so that the second fire control controller can control the fire extinguishing system to accurately extinguish the thermal runaway battery based on the position information of the thermal runaway battery.

[0210] In some embodiments, the at least two fire control controllers further comprise a third fire control controller; the method can further comprise: in the case of a thermal runaway battery catching fire and the fire of the thermal runaway battery expanding, sending a third fire control command to the third fire control controller; and the third fire control controller is configured to control the fire retardation treatment of the energy storage system by the fire control system in response to the third fire control command.

[0211] In some embodiments, the energy storage controller comprises at least two energy storage sub-controllers connected to each other in communication; the method further comprises:

[0212] In step S1701, current health levels corresponding to the two energy storage sub-controllers are obtained; the current health level is used to represent the health status of the energy storage sub-controller at the current time.

[0213] Here, the subject performing the obtaining of the current health levels corresponding to the two energy storage sub-controllers can be any one of the two energy storage sub-controllers. Alternatively, it can be another controller in the energy storage controller.

[0214] In step S1702, in the case that the current health levels corresponding to the two energy storage sub-controllers are both greater than or equal to a preset level or both less than the preset level, the time at which the health level of each energy storage sub-controller changes to the current health level is determined.

[0215] In the embodiments of the present disclosure, after obtaining the current health levels corresponding to the two energy storage sub-controllers, it is necessary to compare the size relationship between the current health level of each energy storage sub-controller and the preset level. If the current health level of one energy storage sub-controller is greater than or equal to the preset level and the current health level of one energy storage sub-controller is less than the preset level, the energy storage sub-controller with the current health level greater than or equal to the preset level is taken as the main energy storage controller, and the energy storage sub-controller with the current health level less than the preset level is taken as the standby energy storage controller.

[0216] If the current health levels corresponding to the two energy storage sub-controllers are both greater than or equal to the preset level or both less than the preset level, the main energy storage controller cannot be directly determined, and the time at which the health level of each energy storage sub-controller changes to the current health level needs to be determined.

[0217] In step S1703, the energy storage sub-controller corresponding to the later time of the two times at which the current health levels are both greater than or equal to the preset level is determined as the main energy storage controller.

[0218] In the embodiments of the present disclosure, when the current health levels corresponding to the two energy storage sub-controllers are both greater than or equal to the preset level, the energy storage sub-controller that becomes the current health level later can be determined as the main energy storage controller. Because the energy storage sub-controller that becomes the current health level later can maintain the preset level for a longer time than the energy storage sub-controller that becomes the current health level earlier, determining the energy storage sub-controller that becomes the current health level later as the main energy storage controller can make the main energy storage controller work for a longer time and reduce the number of switching the main energy storage controller.

[0219] In step S1704, the energy storage sub-controller corresponding to the earlier time among the two times when the current health levels of the two energy storage sub-controllers are both less than the preset level is determined as the standby energy storage controller.

[0220] In the embodiments of the present disclosure, when the current health levels corresponding to the two energy storage sub-controllers are both less than the preset level, the energy storage sub-controller that becomes the current health level earlier can be determined as the standby energy storage controller, and the energy storage sub-controller that becomes the current health level later can be determined as the main energy storage controller.

[0221] In the embodiments of the present disclosure, by obtaining the current health levels corresponding to the two energy storage sub-controllers, the energy storage sub-controller currently serving as the main energy storage controller can be accurately determined. In addition, when the current health levels corresponding to the two energy storage sub-controllers are both greater than or equal to the preset level or both less than the preset level, the main energy storage controller can be determined by determining the time when the health level of each energy storage sub-controller changes to the current health level, so as to reduce the number of switching the main energy storage controller and improve the accuracy of determining the main energy storage controller.

[0222] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present disclosure, the size of the serial number of each step / process does not mean the order of execution, and the execution order of each step / process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure. The serial number of the above embodiments of the present disclosure is only for description, not representing the pros and cons of the embodiments.

[0223] It should be noted that, in the present document, the terms "comprising", "comprising" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements not only includes those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0224] The above description is only an embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered by the protection scope of the present disclosure.

Claims

1. An energy storage control system, comprising an energy storage controller and a fire controller, wherein the fire controller comprises a primary fire controller and a secondary fire controller; wherein: At least one of the primary fire controller and the secondary fire controller is in communication with the energy storage controller; the secondary fire controller is in communication with at least one of the primary fire controller and the energy storage controller; the energy storage controller is used to control the operating mode of the energy storage system; the energy storage system includes a plurality of batteries; The primary fire controller is used to prevent fires in batteries caused by thermal runaway among the multiple batteries; The secondary fire controller is used to suppress the spread of fire in the thermal runaway battery.

2. The energy storage control system according to claim 1, wherein: The energy storage controller is in communication with the temperature monitoring system of the energy storage system; wherein, The temperature monitoring system is used to collect temperature information of multiple batteries in the energy storage system; The energy storage controller is configured to send a first firefighting command to the primary firefighting controller or the secondary firefighting controller when it is determined based on the temperature information of the multiple batteries that a thermal runaway battery exists among the multiple batteries; The primary fire controller or the secondary fire controller is used to control the fire system to prevent the thermal runaway battery from catching fire or to control the fire system to suppress the spread of the fire of the thermal runaway battery in response to the first fire command.

3. The energy storage control system according to claim 2, wherein: in, When the energy storage controller sends the first fire control command to the first level fire control controller, The secondary fire controller is configured to control the fire protection system to suppress the spread of fire in the thermal runaway battery in response to a second fire protection command based on the location information of the thermal runaway battery carried in the second fire protection command; The second firefighting command is sent by the energy storage controller or the first-level firefighting controller to the second-level firefighting controller when the thermal runaway battery catches fire.

4. The energy storage control system according to claim 3, wherein: in, The energy storage controller is configured to send a first control command to the primary fire controller when determining that the temperature information of the thermal runaway battery is greater than a first temperature threshold; the primary fire controller is configured to control the fire protection system to increase the prevention strength of preventing the thermal runaway battery from catching fire in response to the first control command; and / or, The secondary fire controller is used to control the fire protection system to increase the suppression intensity of suppressing the spread of fire in response to a second control command; wherein, the second control command is sent to the secondary fire controller by the energy storage controller or the first-level fire controller when the temperature information of the thermal runaway battery is greater than the second temperature threshold, or the temperature information of the peripheral batteries of the thermal runaway battery is greater than the second temperature threshold.

5. The energy storage control system according to claim 3 or 4, wherein: The fire controller also includes a three-level fire controller; wherein, The energy storage controller is configured to send a third firefighting command to the third-level firefighting controller when the thermal runaway battery catches fire and the fire of the thermal runaway battery spreads; The three-level fire controller is used to control the fire system to perform fire delay processing on the energy storage system in response to the third fire command.

6. The energy storage control system according to claim 5, wherein: At least two of the energy storage controller, the first-level fire controller, the second-level fire controller and the third-level fire controller can be integrated together.

7. The energy storage control system according to claim 5 or 6, wherein: The energy storage control system further includes a fire alarm system; the fire alarm system is in communication connection with the secondary fire controller; wherein, The fire alarm system is configured to send a preparation start message indicating that a secondary fire controller is ready to be started to the energy storage controller in the event of a fire in the thermal runaway battery; The energy storage controller is configured to send a message indicating that the energy storage system has stopped operating to the fire alarm system in response to the preparation start information; The fire alarm system is configured to send the second fire command to the secondary fire controller in response to a message indicating that the energy storage system has stopped operating.

8. The energy storage control system according to claim 7, wherein: The fire alarm system is in communication with the three-level fire controller; wherein, The secondary fire controller is used to send status information of the secondary fire controller to the fire alarm system; The fire alarm system is configured to send the third fire command to the tertiary fire controller when it is determined based on the status information of the secondary fire controller that the fire of the thermal runaway battery is spreading.

9. The energy storage control system according to claim 7 or 8, wherein: The energy storage fire controller also includes a background monitoring system, which is connected to one or more of the following modules through at least two different communication methods, wherein: The background monitoring system is used to monitor the status information of one or more of the following modules; The following modules include: the energy storage controller, the first-level fire controller, the second-level fire controller, the third-level fire controller and the fire alarm system.

10. The energy storage control system according to any one of claims 7 to 9, wherein: The primary fire controller is communicatively connected with the secondary fire controller; The energy storage controller is configured to send a second firefighting command to the primary firefighting controller in the event of a fire in the thermal runaway battery; The primary fire controller is configured to send the second fire command to the secondary fire controller while closing a valve related to preventing thermal runaway battery fire.

11. The energy storage control system according to claim 10, wherein: The first-level fire controller is in communication with the fire alarm system; wherein, The first-level fire controller is further used to send status information of the first-level fire controller to the fire alarm system; The secondary fire controller is further used to send status information of the secondary fire controller to the fire alarm system; The fire alarm system is configured to send a third fire command to the tertiary fire controller when it is determined that the thermal runaway battery has caught fire based on the status information of the first-level fire controller and when it is determined that the fire of the thermal runaway battery has spread based on the status information of the second-level fire controller.

12. The energy storage control system according to claim 11, wherein: The fire alarm system is further configured to output alarm information of at least one of the primary fire controller, the secondary fire controller, and the tertiary fire controller; Among them, the alarm information of the first-level fire controller, the alarm information of the second-level fire controller and the alarm information of the third-level fire controller are respectively determined based on the fault information of the first-level fire controller, the fault information of the second-level fire controller and the fault information of the third-level fire controller; the fault information of the first-level fire controller, the fault information of the second-level fire controller and the fault information of the third-level fire controller are respectively determined based on the status information of the first-level fire controller, the status information of the second-level fire controller and the status information of the third-level fire controller.

13. The energy storage control system according to any one of claims 7 to 12, wherein: The energy storage controller includes at least two energy storage sub-controllers that are communicatively connected to each other, and each of the energy storage sub-controllers is respectively communicatively connected to the temperature monitoring system of the energy storage system; At least one of the two energy storage sub-controllers is a main energy storage controller; The main energy storage controller is determined based on the health status corresponding to at least two of the energy storage sub-controllers.

14. The energy storage control system according to claim 13, wherein: The first-level fire controller includes at least two first-level fire sub-controllers that are communicatively connected to each other; each of the first-level fire sub-controllers is communicatively connected to each of the energy storage sub-controllers; At least one of the two first-level fire sub-controllers is a first-level fire main controller; The primary fire main controller is determined based on the health status corresponding to at least two of the primary fire sub-controllers.

15. The energy storage control system according to claim 13 or 14, wherein: The secondary fire controller includes at least two secondary fire sub-controllers that are communicatively connected to each other; Each of the secondary fire sub-controllers is communicatively connected to each of the energy storage sub-controllers; at least one of the two secondary fire sub-controllers is a secondary fire main controller; the secondary fire main controller is determined based on the health status corresponding to at least two of the secondary fire sub-controllers.

16. The energy storage control system according to any one of claims 13 to 15, wherein: The at least two energy storage sub-controllers include a first energy storage sub-controller and a second energy storage sub-controller; wherein, The first energy storage sub-controller is communicatively connected to the first-level fire controller, the second-level fire controller, and the third-level fire controller respectively; The second energy storage sub-controller is communicatively connected to the first-level fire controller, the second-level fire controller and the third-level fire controller respectively; The fire alarm system is communicatively connected to the first-level fire controller, the second-level fire controller and the third-level fire controller respectively.

17. The energy storage control system according to claim 16, wherein: The first energy storage sub-controller and the second energy storage sub-controller are respectively connected to the fire alarm system via two communication links; The fire alarm system is communicatively connected to the first-level fire controller, the second-level fire controller and the third-level fire controller respectively.

18. The energy storage control system according to any one of claims 1 to 17, wherein: The first-level fire controller includes a gas monitoring system, a combustion prevention processing system and a control system; The gas monitoring system is used to detect the concentration of combustible gas in the energy storage system; The control system is used to control the preventive combustion treatment system to perform preventive combustion treatment on the energy storage system when the combustible gas concentration is greater than a preset value, so as to reduce the combustible gas concentration.

19. The energy storage control system according to any one of claims 1 to 18, wherein: The energy storage system includes multiple energy storage submodules; each of the energy storage submodules includes at least one battery module; each of the battery modules includes multiple electrical cabinets; each of the electrical cabinets includes multiple electrical boxes; each of the electrical boxes includes multiple batteries; the fire controller also includes a three-level fire controller; wherein, The first-level fire controller is used to prevent the thermal runaway battery from catching fire; The secondary fire controller is used to suppress the spread of fire in the thermal runaway battery based on the location information of the thermal runaway battery among the multiple batteries; The three-level fire controller is used to perform fire delay processing on the energy storage system.

20. An energy storage control method, the energy storage control method being applied to an energy storage controller in an energy storage control system, the energy storage control system further comprising a fire controller; the fire controller comprising a primary fire controller and a secondary fire controller; the primary fire controller being communicatively connected to the energy storage controller; The secondary fire controller is communicatively connected to at least one of the primary fire controller and the energy storage controller; the method includes: Obtain temperature information of multiple batteries in the energy storage system; determining, based on the temperature information of the plurality of batteries, whether there is a battery in thermal runaway among the plurality of batteries; When a battery in thermal runaway exists among the multiple batteries, controlling the primary fire controller to prevent the battery in thermal runaway from catching fire; In the event that the thermal runaway battery catches fire, the secondary fire controller is controlled to suppress the spread of the fire of the thermal runaway battery.

21. The energy storage control method according to claim 20, wherein: When a battery in thermal runaway exists among the multiple batteries, controlling the primary fire controller to prevent the battery in thermal runaway from catching fire includes: In the event that a battery in thermal runaway exists among the multiple batteries, a first firefighting command is sent to the primary firefighting controller; the primary firefighting controller is configured to control the firefighting system in response to the first firefighting command to prevent the battery in thermal runaway from catching fire.

22. The energy storage control method according to claim 21, wherein: In the event that the thermal runaway battery catches fire, controlling the secondary fire controller to suppress the spread of the fire of the thermal runaway battery includes: In the event that the thermal runaway battery catches fire and the first fire command is sent to the first-level fire controller, a second fire command is sent to the first-level fire controller or the second-level fire controller; the second-level fire controller is configured to respond to the second fire command and, based on the location information of the thermal runaway battery carried in the second fire command, control the fire protection system to suppress the spread of the fire of the thermal runaway battery.

23. The energy storage control method according to claim 21 or 22, wherein: The fire controller further includes a three-level fire controller; the method further includes: In the event that the thermal runaway battery catches fire and the fire of the thermal runaway battery spreads, a third firefighting command is sent to the three-level firefighting controller; the three-level firefighting controller is configured to control the firefighting system to perform fire delaying processing on the energy storage system in response to the third firefighting command.

24. The energy storage control method according to any one of claims 20 to 23, wherein the energy storage controller comprises two energy storage sub-controllers communicatively connected to each other; the method further comprising: Obtaining the current health levels corresponding to the two energy storage sub-controllers respectively; The current health level is used to represent the health status of the energy storage sub-controller at the current moment; When the current health levels respectively corresponding to the two energy storage sub-controllers are both greater than or equal to the preset level, or are both less than the preset level, determining the time when the health level of each energy storage sub-controller changes to the current health level; Determining the energy storage sub-controller corresponding to the later of the two times when the current health levels are both greater than or equal to the preset level as the main energy storage controller; The energy storage sub-controller corresponding to the earlier time of the two times when both current health levels are lower than the preset level is determined as the backup energy storage controller.

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