Energy storage system, fire-fighting temperature control method and equipment for energy storage system, and medium

Abstract

The embodiment of the invention provides an energy storage system, a fire-fighting temperature control method and device for the energy storage system and a medium. The energy storage system comprises a battery pack, a fire-fighting system and a battery management system, the battery pack comprises a plurality of battery boxes, and the fire-fighting system comprises a fire-fighting temperature control device which is arranged on an upper cover of the battery pack and comprises a plurality of metal nozzles and a fire-fighting temperature control pipeline; the fire fighting system is connected with the battery management system and used for detecting environmental parameters and sending a spraying signal to the battery management system when the environmental parameters are abnormal; the fire-fighting temperature control pipeline is used for transporting a fire-fighting temperature control medium; when the battery management system does not receive the spraying signal, the fire-fighting temperature control device is used for performing temperature control treatment on the battery pack; the metal nozzle is used for controlling the fire-fighting temperature control medium to enter the battery box below; and after receiving the spraying signal, the battery management system controls a metal nozzle above the abnormal battery box based on the spraying signal so as to carry out fire-fighting treatment on the abnormal battery box. And the safety of the energy storage system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fire safety of energy storage systems, and in particular to an energy storage system and a fire protection temperature control method, equipment, and medium for the energy storage system. Background Art

[0002] Against the backdrop of global energy transformation, energy storage technology has seen significant development as a key means of balancing energy supply and demand and ensuring grid stability. However, as energy storage systems increase in integration and energy density, they present a significant challenge: safety issues with one or more batteries within the system can easily lead to systemic fires.

[0003] At present, the fire protection system in the energy storage system usually detects smoke gas and then sprays clean gas fire extinguishing agents such as heptafluoropropane to achieve fire protection of the energy storage system.

[0004] However, the current spraying of fire extinguishing agents targets the entire energy storage system, rather than precisely extinguishing the fire point or the battery module experiencing thermal runaway; and it is impossible to continuously cool the battery module. When the battery temperature is too high, thermal runaway may occur. Summary of the Invention

[0005] The embodiments of the present application provide an energy storage system and a fire-fighting temperature control method, equipment, and medium for the energy storage system, so as to achieve precise fire extinguishing and improve the overall energy efficiency and safety of the energy storage system.

[0006] In a first aspect, an embodiment of the present application provides an energy storage system, comprising: a battery pack, a fire protection system, and a battery management system. The battery pack includes multiple battery boxes. The fire protection system includes a fire protection temperature control device, which is disposed on the upper cover of the battery pack and includes multiple metal nozzles and fire protection temperature control pipelines. At least one metal nozzle is disposed above each battery box.

[0007] The fire protection system is connected to the battery management system and is used to detect environmental parameters in the battery pack. When the environmental parameters are abnormal, a spraying signal is sent to the battery management system, and the spraying signal is used to indicate the abnormal battery box;

[0008] The fire-fighting temperature-control pipeline is used to transport the fire-fighting temperature-control medium;

[0009] When the battery management system does not receive the spraying signal, the fire-fighting temperature control device is used to control the temperature of the battery pack through the fire-fighting temperature control medium in the fire-fighting temperature control pipeline;

[0010] The metal nozzle is connected to the battery management system and is used to control the fire temperature control medium in the fire temperature control pipeline to enter the battery box below;

[0011] After the battery management system receives the spraying signal sent by the fire protection system, the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection treatment on the abnormal battery box.

[0012] In one possible embodiment, the metal nozzle includes a nozzle, an electric heating wire, and an alloy inner core;

[0013] The electric heating wire is connected to the battery management system via a wire and is used to heat and melt the alloy core;

[0014] The alloy inner core is disposed in the nozzle to prevent the fire-fighting temperature control medium from entering the battery box below;

[0015] The nozzle is used to allow the fire-fighting temperature-control medium to pass through and enter the battery box below after the alloy inner core melts.

[0016] In one possible embodiment, the alloy core melts when the temperature in the battery case rises to a preset temperature.

[0017] In a possible implementation, the battery box includes at least one battery cell, and the battery cell corresponds to the metal nozzle on a one-to-one basis.

[0018] In one possible embodiment, a fire protection system includes a plurality of detectors;

[0019] The detector is arranged in the battery box and connected to the fire protection system, and is used to detect the environmental parameters of the battery pack box. When the environmental parameters are abnormal, an alarm signal is sent to the fire protection system;

[0020] The fire protection system is used to determine the abnormal battery box according to the alarm signal, and generate a spraying signal to send to the battery management system.

[0021] In one possible implementation, the fire protection temperature control pipeline includes a main pipeline, a water inlet, a water outlet, a temperature control branch pipe, a fire protection branch pipe, and a solenoid valve;

[0022] The main pipe is connected to the temperature control branch pipe, the fire-fighting branch pipe, the water inlet, and the water outlet, wherein the water inlet and the water outlet are respectively located at both ends of the main pipe, and are used to allow the fire-fighting temperature control medium to enter / flow out of the fire-fighting temperature control pipe;

[0023] The temperature control branch pipe is provided near the bottom plate side of the battery pack and is used to control the temperature of the battery pack through the fire protection temperature control medium;

[0024] The fire-fighting branch pipe is connected to the metal nozzle and is used to perform fire-fighting treatment on the abnormal battery box through the metal nozzle;

[0025] The solenoid valve is installed on the temperature control branch pipe and is used to control the fire-fighting temperature control medium to enter the temperature control branch pipe.

[0026] In a second aspect, embodiments of the present application provide a fire protection temperature control method for an energy storage system, which is applied to the energy storage system according to the first aspect and / or various possible implementations of the first aspect, the method comprising:

[0027] The fire protection system detects environmental parameters in the battery pack. When the environmental parameters are abnormal, the fire protection system sends a spraying signal to the battery management system. The spraying signal is used to indicate the abnormal battery box.

[0028] When the battery management system does not receive the spraying signal, the fire temperature control device controls the temperature of the battery pack through the fire temperature control medium in the fire temperature control pipeline;

[0029] After the battery management system receives the spraying signal sent by the fire protection system, the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection treatment on the abnormal battery box.

[0030] In one possible embodiment, the metal nozzle includes a nozzle, an electric heating wire, and an alloy inner core; the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection on the abnormal battery box, including:

[0031] After receiving the spray signal, the battery management system identifies the abnormal battery box corresponding to the spray signal and heats the electric heating wire in the metal nozzle above the abnormal battery box, allowing the fire protection temperature control medium to enter the battery box below through the nozzle. The battery management system heats the electric heating wire to melt the alloy core.

[0032] In one possible embodiment, the alloy core melts when the temperature in the battery case rises to a preset temperature.

[0033] In a possible implementation, the battery box includes at least one battery cell, and the battery cell corresponds to the metal nozzle on a one-to-one basis.

[0034] In one possible embodiment, the fire protection system includes multiple detectors; the fire protection system detects environmental parameters in the battery pack. When the environmental parameters are abnormal, the fire protection system sends a spraying signal to the battery management system, including:

[0035] Multiple detectors detect environmental parameters of the battery pack box, and when the environmental parameters are abnormal, send an alarm signal to the fire protection system;

[0036] The fire protection system determines the abnormal battery box according to the alarm signal, and generates a spraying signal and sends it to the battery management system.

[0037] In a possible implementation, the fire-fighting temperature-control pipeline includes a main pipeline, a water inlet, a water outlet, a temperature-control branch pipe, a fire-fighting branch pipe, and a solenoid valve.

[0038] In a third aspect, an embodiment of the present application provides a fire protection temperature control device for an energy storage system, comprising: a memory, a processor;

[0039] The memory stores computer-executable instructions;

[0040] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0041] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementation methods of the first aspect.

[0042] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0043] The energy storage system and the fire-fighting temperature control method, equipment, and medium for the energy storage system provided in the embodiments of the present application integrate the fire-fighting system of the energy storage system with the liquid cooling system, using a high-specific heat capacity, high-insulation liquid medium as the fire-fighting temperature-control medium. Under normal circumstances, the fire-fighting temperature-control medium circulates within the system as a coolant for temperature control. In the event of thermal runaway or fire, the metal nozzle provided by the present invention achieves precise fire extinguishing, thereby improving the overall energy efficiency and safety of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0045] Figure 1 A schematic diagram of a conventional energy storage system provided for this application;

[0046] Figure 2 A schematic structural diagram of a battery pack cover for an energy storage system provided in an embodiment of the present application;

[0047] Figure 3 A schematic diagram of the structure of an energy storage system provided in an embodiment of the present application;

[0048] Figure 4 A schematic structural diagram of a metal nozzle provided in an embodiment of the present application;

[0049] Figure 5 A flow chart of a fire protection temperature control method for an energy storage system provided in an embodiment of the present application;

[0050] Figure 6 A schematic structural diagram of a fire protection temperature control device for an energy storage system provided in an embodiment of the present application.

[0051] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

[0052] Description of reference numerals:

[0053] 1- Upper cover of the battery pack; 2- Fire-fighting temperature control pipeline; 3- Metal nozzle; 4- Flexible circuit board; 5- Water inlet; 6- Water outlet; 7- Battery rack; 8- Water inlet main line; 9- Water outlet main line; 10- Liquid cooling plate; 11- Temperature control branch water inlet pipeline; 12- Fire-fighting branch water inlet pipeline; 13- Fire-fighting outlet water pipeline; 14- Temperature control outlet water pipeline; 15- Alloy inner core; 17- Electric heating wire; 18- Lead wire; 19- Nozzle. DETAILED DESCRIPTION

[0054] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0055] Amidst the global energy transition, the installed capacity of renewable energy sources, such as solar and wind power, has grown rapidly. However, renewable energy is intermittent and unstable. For example, solar power fails to generate electricity at night or on rainy days, and wind power output is significantly affected by wind speed. This poses challenges to grid stability and reliability when renewable energy is integrated into the grid. Consequently, energy storage technology, as a key tool for balancing energy supply and demand and ensuring grid stability, has seen significant development. As energy storage systems increase in integration and energy density, a prominent issue arises: safety issues with one or more batteries within the system can easily lead to systemic fires.

[0056] Figure 1A schematic diagram of an existing energy storage system provided for this application is shown in FIG. Figure 1 As shown, the fire protection system in the energy storage system is usually based on the detection of smoke gas and the spraying of clean gas fire extinguishing agents such as heptafluoropropane to achieve fire protection of the energy storage system.

[0057] Based on the above scenario, it can be seen that in the existing technology, the fire protection system usually sprays clean gas fire extinguishing agents such as HFC-227ea after detecting smoke gas to achieve fire protection of the energy storage system. However, there is a problem that it cannot accurately extinguish the fire point or the battery module experiencing thermal runaway, nor can it continuously cool the battery module.

[0058] In addition, in the existing technology, the fire protection system is usually triggered in conjunction with the smoke and temperature alarms and is independently controlled by the fire protection system. Once a single failure occurs in the fire protection system or a false fire alarm is reported, safety risks are likely to occur when there is no one on duty.

[0059] The energy storage system provided in this application integrates the fire protection system of the energy storage system with the liquid cooling system, and uses a high-specific heat capacity, high-insulation liquid medium as a fire protection temperature control medium. Under normal circumstances, the fire protection temperature control medium circulates as a coolant in the system for temperature control. In the event of thermal runaway or fire, precise fire extinguishing is achieved through metal nozzles, solving the problems of inability to accurately extinguish fires and continuous cooling of battery modules. Through the coordinated control of the battery management system and the fire protection system, the problem of the fire protection system being prone to safety risks caused by single control is solved.

[0060] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0061] Figure 2 This is a schematic diagram of the structure of a battery pack cover of an energy storage system provided in an embodiment of the present application. Figure 3 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of the present application. Figure 2 and Figure 3 As shown, the energy storage system includes: a battery pack, a fire protection system (not shown in the figure), and a battery management system (not shown in the figure). The battery pack includes multiple battery boxes. The fire protection system includes a fire protection temperature control device, which is arranged at the upper cover (1) of the battery pack and includes multiple metal nozzles (3) and a fire protection temperature control pipeline (2). At least one metal nozzle (3) is arranged above each battery box.

[0062] The fire protection system is connected to the battery management system to detect the environmental parameters inside the battery pack and send a spraying signal to the battery management system when the environmental parameters are abnormal;

[0063] Among them, the spray signal is used to indicate an abnormal battery box; the environmental parameters include temperature data, flame data, combustible gas data, and smoke data; the abnormal battery is used to indicate a battery box with fire hazards.

[0064] The fire protection system monitors the environmental parameters within the battery pack to detect fire hazards within the energy storage system. If the fire protection system detects an anomaly in the battery pack's environmental parameters, it sends a spray signal to the battery management system, allowing the battery management system to promptly initiate firefighting measures. This coordinated operation of the fire protection system and the battery management system avoids the existing independent control of the fire protection system, which can easily lead to safety risks in unattended situations if a single fire protection system failure or a false fire alarm occurs, thereby improving the safety of the energy storage system.

[0065] In one possible implementation, the fire protection system includes multiple detectors; the detectors are arranged in the battery box and connected to the fire protection system, and are used to detect the environmental parameters in the battery box. When the environmental parameters are abnormal, an alarm signal is sent to the fire protection system; the fire protection system is used to determine the abnormal battery box based on the alarm signal, and generate a spray signal to send to the battery management system.

[0066] Among them, detectors include smoke detectors, temperature detectors, combustible gas detectors and flame detectors.

[0067] The fire protection system includes smoke detectors, temperature detectors, combustible gas detectors, and flame detectors, all installed inside the battery compartment. These detectors monitor environmental parameters within the compartment, including smoke, temperature, combustible gas, and flame data. When the detectors detect abnormalities in these data, they send an alarm signal to the fire protection system. The fire protection system then identifies the abnormal compartment and generates a spray signal, which is sent to the battery management system.

[0068] For example, when the temperature and smoke detectors within a battery box detect abnormal temperature and smoke data, they send temperature and smoke alarms to the fire protection system. Upon receiving these alarms, the fire protection system identifies the battery box as abnormal and generates a firefighting signal to the battery management system for fire protection measures.

[0069] Fire-fighting temperature control pipeline, used to transport fire-fighting temperature control medium;

[0070] Among them, the fire protection temperature control medium is used to indicate high specific heat capacity and high insulation liquid medium.

[0071] In one possible implementation, continue to refer to Figure 2 and Figure 3 The fire-fighting temperature control pipeline includes a main pipeline, a water inlet (5), a water outlet (6), a temperature-control branch pipe, a fire-fighting branch pipe, and a solenoid valve (not shown in the figure); the main pipeline is connected to the temperature-control branch pipe, the fire-fighting branch pipe, the water inlet (5), and the water outlet (6); wherein the water inlet (5) and the water outlet (6) are respectively located at both ends of the main pipeline, and are used to allow the fire-fighting temperature control medium to enter / flow out of the fire-fighting temperature control pipeline; the temperature-control branch pipe is arranged on the bottom plate side close to the battery pack, and is used to control the temperature of the battery pack through the fire-fighting temperature control medium; the fire-fighting branch pipe is connected to the metal nozzle, and is used to perform fire-fighting treatment on the abnormal battery box through the metal nozzle; the solenoid valve is installed on the temperature-control branch pipe, and is used to control the fire-fighting temperature control medium to enter the temperature-control branch pipe.

[0072] The main pipe includes a water inlet pipe (8) and a water outlet pipe (9), the water inlet pipe (8) and the water outlet pipe (9) are fixed on the battery rack (7), the water inlet (5) is located at one end of the water inlet pipe (8); the water outlet (6) is located at one end of the water outlet pipe (9); the temperature control branch pipe is arranged on the bottom plate side close to the battery pack, including a temperature control branch water inlet pipe (11), a liquid cooling plate (10) and a temperature control outlet pipe (14), the temperature control branch water inlet pipe (11) is connected to the temperature control outlet pipe (14) through the liquid cooling plate (10); the fire branch pipe includes a fire branch water inlet pipe (12) and a fire outlet pipe (13), and fire treatment is performed on abnormal battery boxes through metal nozzles; the solenoid valve is installed on the temperature control branch water inlet pipe (11) and the temperature control outlet pipe (14).

[0073] The fire-fighting temperature-controlling medium enters the water inlet main pipeline (8) through the water inlet (5), is transported in the fire-fighting temperature-control pipeline, and enters the temperature-control branch water inlet pipeline (11) and the fire-fighting branch water inlet pipeline (12).

[0074] The fire-fighting temperature control medium enters the liquid cooling plate (10) through the temperature-controlling branch water inlet pipe (11). The fire-fighting temperature control medium circulates inside the liquid cooling plate (10) to absorb and take away heat, thereby increasing top heat dissipation and improving the temperature difference of the battery box. The fire-fighting temperature control medium enters the temperature-controlling branch water outlet pipe (14) through the liquid cooling plate (10), and cooperates with the circulation of the medium in the liquid cooling plate flow channel to achieve temperature control.

[0075] During use, the solenoid valve is in the normally open state, and the fire-fighting temperature control medium enters the temperature control branch pipe; when the fire is triggered, the solenoid valve is closed, and the fire-fighting temperature control medium cannot enter the temperature control branch pipe to ensure that the amount of liquid sprayed on the upper cover is sufficient.

[0076] When the battery management system does not receive a spraying signal, the fire temperature control device is used to control the temperature of the battery pack through the fire temperature control medium in the fire temperature control pipeline;

[0077] When the battery management system does not receive the spraying signal, it indicates that the battery box is operating normally. At this time, the fire protection temperature control medium circulates inside the liquid cooling plate to absorb and take away heat, increase top heat dissipation, improve the temperature difference of the battery box, and achieve temperature control.

[0078] The metal nozzle is connected to the battery management system and is used to control the fire temperature control medium in the fire temperature control pipeline to enter the battery box below; after the battery management system receives the spraying signal sent by the fire protection system, the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection treatment on the abnormal battery box, realizing active fire protection. The safety of the energy storage system is improved through the coordinated control of the battery management system and the fire protection system.

[0079] Understandably, when the battery management system doesn't receive a spray signal, the metal nozzles prevent the fire-control medium in the fire-control pipe from entering the battery box below. At this point, the fire-control medium is used for temperature control. After the battery management system receives a spray signal from the fire-control system, the metal nozzles allow the fire-control medium in the fire-control pipe to enter the battery box below, thereby providing fire protection for the abnormal battery box. Combining the traditional cooling system with the fire-control system into a single temperature-controlled fire-fighting system prevents the traditional cooling system from occupying a large amount of internal space within the energy storage system, reducing costs and increasing the overall energy density of the system.

[0080] After receiving the spraying signal, the battery management system can, for example, open a metal nozzle to allow the fire temperature control medium in the fire temperature control pipeline to enter the abnormal battery box below, thereby achieving precise fire protection at the box level.

[0081] Figure 4 A schematic structural diagram of a metal nozzle provided in an embodiment of the present application. In one possible implementation, the metal nozzle (3) includes a nozzle (19), an electric heating wire (17), and an alloy inner core (15); the electric heating wire (17) is connected to the battery management system via a wire (18) and is used to heat and melt the alloy inner core (15); the alloy inner core (15) is disposed in the nozzle (19) and is used to prevent a fire-fighting temperature-control medium from entering the battery box below; and the nozzle (19) is used to allow the fire-fighting temperature-control medium to pass through and enter the battery box below after the alloy inner core (15) melts.

[0082] The metal nozzle (3) is connected to the battery management system through a wire (18). When the battery management system receives a spraying signal, the electric heating wire (17) in the metal nozzle on the abnormal battery box corresponding to the spraying signal is heated. After being heated, the electric heating wire (17) increases the surrounding temperature, thereby melting the alloy core (15). After the alloy core melts, the fire-fighting temperature control medium enters the abnormal battery box below through the nozzle (19).

[0083] The alloy core is preferably made of a material with a melting point between 70°C and 150°C. Materials include, but are not limited to, tin-based alloys, Wood's metal, and indium gallium alloys. The alloy core may be spherical or bar-shaped, but this application does not impose any limitations thereto. Preferably, the metal nozzle is secured to the fire protection temperature control pipeline using threads or gaskets to ensure pipeline airtightness.

[0084] Understandably, the alloy core preferably has a melting point between 70°C and 150°C. Therefore, when the energy storage system is not in operation, such as during transportation or storage, and the fire protection system is not powered on, if a battery in the battery box experiences thermal runaway, the fire protection system will not be able to promptly identify the danger and take action. When the temperature around the battery rises above the preset temperature (the melting point of the alloy core), the alloy core is triggered to melt, and the fire protection temperature control medium flows directly into the battery box from the metal nozzle above the runaway battery cell, achieving immersion cooling and fire extinguishing, thus realizing passive fire protection. By setting an alloy core with a lower melting point, the battery box can still be extinguished through passive fire protection even when power is not supplied or the fire protection system or battery management system fails.

[0085] In a possible implementation, the battery box includes at least one battery cell, and the battery cells correspond to the metal nozzles one by one.

[0086] The metal nozzles correspond one-to-one to the battery cells, achieving precise fire protection at the battery cell level.

[0087] In a possible implementation, the battery management system includes a flexible circuit board (4); the metal nozzle (3) is connected to the battery management system via the flexible circuit board (4).

[0088] When the battery management system receives the spraying signal sent by the fire protection system, it controls the current to pass through the flexible circuit board (4), and transmits the current to the electric heating wire (17) built into the nozzle through the wire (18), so that the alloy core melts and the fire protection treatment is achieved.

[0089] In a possible implementation, the flexible circuit board (4) is used to collect the temperature parameters of the battery cell. For example, when the temperature parameters of the battery cell collected by the flexible circuit board are abnormal, they are fed back to the battery management system, which controls the solenoid valve to close and activates firefighting; or when the battery management system receives a spraying signal, it controls the solenoid valve to close.

[0090] After the solenoid valve is closed, the fire-fighting temperature control medium cannot enter the temperature control branch pipe to ensure that the amount of liquid sprayed on the upper cover is sufficient.

[0091] An energy storage system provided in an embodiment of the present application integrates the fire protection system of the energy storage system with the liquid cooling system, and uses a high-specific heat capacity, high-insulation liquid medium as a fire protection temperature control medium. Under normal circumstances, the fire protection temperature control medium circulates as a coolant in the system for temperature control. In the event of thermal runaway or fire, the metal nozzle provided by the present invention achieves precise fire extinguishing, thereby improving the overall energy efficiency and safety of the product.

[0092] Figure 5 A flow chart of a fire protection temperature control method for an energy storage system provided in an embodiment of the present application is applied to the energy storage system provided in the above system embodiment, such as Figure 5 As shown, the method includes:

[0093] S501: The fire protection system detects environmental parameters in the battery pack. When the environmental parameters are abnormal, the fire protection system sends a spraying signal to the battery management system.

[0094] Among them, the spray signal is used to indicate an abnormal battery box;

[0095] S502: When the battery management system does not receive a spraying signal, the fire temperature control device controls the temperature of the battery pack using a fire temperature control medium in the fire temperature control pipeline;

[0096] S503: After the battery management system receives the spraying signal sent by the fire protection system, the battery management system controls the metal sprinkler above the abnormal battery box based on the spraying signal to perform fire protection treatment on the abnormal battery box.

[0097] In one possible implementation, the metal nozzle includes a nozzle, an electric heating wire, and an alloy core. The battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection on the abnormal battery box, including:

[0098] After receiving the spray signal, the battery management system identifies the abnormal battery box corresponding to the spray signal and heats the electric heating wire in the metal nozzle above the abnormal battery box, allowing the fire protection temperature control medium to enter the battery box below through the nozzle. The battery management system heats the electric heating wire to melt the alloy core.

[0099] In one possible implementation, the alloy core melts when the temperature inside the battery box rises to a preset temperature.

[0100] In a possible implementation, the battery box includes at least one battery cell, and the battery cells correspond to the metal nozzles one by one.

[0101] In one possible implementation, the fire protection system includes multiple detectors; the fire protection system detects environmental parameters in the battery pack. When the environmental parameters are abnormal, the fire protection system sends a spraying signal to the battery management system, including:

[0102] Multiple detectors detect the environmental parameters of the battery pack box and send alarm signals to the fire protection system when the environmental parameters are abnormal;

[0103] The fire protection system determines the abnormal battery box based on the alarm signal and generates a spraying signal to be sent to the battery management system.

[0104] In a possible implementation, the fire-fighting temperature-control pipeline includes a main pipeline, a water inlet, a water outlet, a temperature-control branch pipe, a fire-fighting branch pipe, and a solenoid valve.

[0105] This embodiment provides a fire protection temperature control method for an energy storage system, which is applied to the energy storage system provided in the above system embodiment. Its implementation principle and technical effects are similar, and are not described in detail in this embodiment.

[0106] Figure 6 This is a structural diagram of a fire protection temperature control device for an energy storage system provided in an embodiment of the present application. Figure 6 As shown, the electronic device 60 provided in this embodiment includes: at least one processor 601 and a memory 602. Optionally, the device 60 further includes a communication component 603. The processor 601, the memory 602 and the communication component 603 are connected via a bus 604.

[0107] During the specific implementation process, at least one processor 601 executes the computer-executable instructions stored in the memory 602, so that the at least one processor 601 performs the above method.

[0108] The specific implementation process of the processor 601 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.

[0109] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASICs), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly executed by a hardware processor or by a combination of hardware and software modules within the processor.

[0110] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage.

[0111] A bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be categorized as address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0112] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0113] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0114] The readable storage medium may be implemented by any type of volatile or non-volatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0115] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0116] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.

[0117] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0118] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0119] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the method of the present invention. The aforementioned storage medium includes various media that can store program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0120] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0121] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. An energy storage system, characterized in that: The energy storage system includes: a battery pack, a fire protection system, and a battery management system. The battery pack includes a plurality of battery boxes. The fire protection system includes a fire protection temperature control device, which is arranged on the upper cover of the battery pack and includes a plurality of metal nozzles and a fire protection temperature control pipeline. At least one metal nozzle is arranged above each battery box. The fire protection system is connected to the battery management system and is used to detect environmental parameters in the battery pack. When the environmental parameters are abnormal, a spraying signal is sent to the battery management system, and the spraying signal is used to indicate an abnormal battery box; The fire-fighting temperature-control pipeline is used to transport the fire-fighting temperature-control medium; When the battery management system does not receive the spraying signal, the fire-fighting temperature control device is used to control the temperature of the battery pack through the fire-fighting temperature control medium in the fire-fighting temperature control pipeline; The metal nozzle is connected to the battery management system and is used to control the fire temperature control medium in the fire temperature control pipeline to enter the battery box below; After the battery management system receives the spraying signal sent by the fire protection system, the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection treatment on the abnormal battery box.

2. The energy storage system according to claim 1, characterized in that: The metal nozzle comprises a nozzle, an electric heating wire and an alloy inner core; The electric heating wire is connected to the battery management system through a wire and is used to heat and melt the alloy inner core; The alloy inner core is arranged in the nozzle to prevent the fire-fighting temperature control medium from entering the battery box below; The nozzle is used to allow the fire-fighting temperature-control medium to pass through and enter the battery box below after the alloy inner core melts.

3. The energy storage system according to claim 2, characterized in that: The alloy inner core melts when the temperature in the battery box rises to a preset temperature.

4. The energy storage system according to claim 1, characterized in that: The battery box includes at least one battery cell, and the battery cell corresponds to the metal nozzle one by one.

5. The energy storage system according to claim 1, characterized in that: The fire protection system includes a plurality of detectors; The detector is arranged in the battery box and connected to the fire protection system, and is used to detect the environmental parameters of the battery pack box, and when the environmental parameters are abnormal, an alarm signal is sent to the fire protection system; The fire protection system is used to determine the abnormal battery box according to the alarm signal, and generate a spray signal to send to the battery management system.

6. The energy storage system according to claim 1, characterized in that: The fire-fighting temperature-control pipeline includes a main pipeline, a water inlet, a water outlet, a temperature-control branch pipe, a fire-fighting branch pipe, and a solenoid valve; The main pipe is connected to the temperature control branch pipe, the fire fighting branch pipe, the water inlet, and the water outlet, wherein the water inlet and the water outlet are respectively located at two ends of the main pipe, and are used to allow the fire fighting temperature control medium to enter / flow out of the fire fighting temperature control pipeline; The temperature control branch pipe is arranged on the bottom plate side close to the battery pack and is used to control the temperature of the battery pack through the fire protection temperature control medium; The fire-fighting branch pipe is connected to the metal nozzle and is used to perform fire-fighting treatment on the abnormal battery box through the metal nozzle; The solenoid valve is installed on the temperature control branch pipe and is used to control the fire-fighting temperature control medium to enter the temperature control branch pipe.

7. A fire protection temperature control method for an energy storage system, characterized in that: Applied to the energy storage system according to any one of claims 1 to 6, the method comprises: The fire protection system detects environmental parameters in the battery pack. When the environmental parameters are abnormal, the fire protection system sends a spray signal to the battery management system, and the spray signal is used to indicate the abnormal battery box; When the battery management system does not receive the spraying signal, the fire-fighting temperature control device controls the temperature of the battery pack through the fire-fighting temperature control medium in the fire-fighting temperature control pipeline; After the battery management system receives the spraying signal sent by the fire protection system, the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire protection treatment on the abnormal battery box.

8. The fire-fighting temperature control method according to claim 7, characterized in that: The metal nozzle includes a nozzle, an electric heating wire, and an alloy inner core; the battery management system controls the metal nozzle above the abnormal battery box based on the spraying signal to perform fire fighting on the abnormal battery box, including: After receiving the spray signal, the battery management system determines the abnormal battery box corresponding to the spray signal; The battery management system heats the electric heating wire in the metal nozzle above the abnormal battery box so that the fire-fighting temperature control medium enters the battery box below through the nozzle; wherein, the battery management system heats the electric heating wire to melt the alloy core.

9. A fire protection temperature control device for an energy storage system, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 7 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 7 to 8 when executed by a processor.

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