Fire extinguishing system and energy storage equipment

Abstract

The invention relates to the technical field of fire fighting, in particular to a fire fighting system and energy storage equipment, the fire fighting system comprises a first fire fighting mechanism, a second fire fighting mechanism, a first detection mechanism and a controller, and the first fire fighting mechanism is used for conducting heat management on the energy storage equipment based on a conductive medium fire extinguishing agent; the second fire-fighting mechanism is used for carrying out thermal management based on an electric insulation medium fire extinguishing agent on the energy storage equipment, the first detection mechanism is used for outputting a first detection signal according to the movement of the fire-fighting system and / or the energy storage equipment, and the controller can disable or start the first fire-fighting mechanism according to the first detection signal. In the application, the controller disables or starts the first fire-fighting mechanism according to the first detection signal, so that false starting of the first fire-fighting mechanism caused by movement of the energy storage equipment can be avoided, and irreversible damage to the energy storage equipment is prevented.

Description

Technical Field

[0001] This application relates to the field of fire protection technology, and in particular to a fire protection system and energy storage device. Background Technology

[0002] With the expansion of new energy applications, mobile energy storage devices are playing an increasingly prominent role in emergency rescue, field operations, and other scenarios due to their flexibility. However, current mainstream energy storage fire protection technologies are mainly designed around fixed energy storage power stations, based on the assumption that the equipment is in a static, horizontal, and stable environment. When these traditional fire protection solutions are directly applied to mobile energy storage devices that experience frequent movement, vibration, impact, and tilting / bumping conditions, serious adaptability deficiencies are exposed.

[0003] Specifically, continuous physical disturbances in mobile environments can easily trigger false alarms from traditional fire detection sensors or cause misjudgments in the control system, leading to the erroneous activation of the fire suppression system. Such unnecessary malfunctions can cause irreversible secondary damage to the core battery module and electrical equipment due to the spraying of liquid extinguishing agents, resulting in significant economic losses. Summary of the Invention

[0004] This application provides a fire protection system that can shut down the thermal management function based on a conductive medium extinguishing agent when in motion, thereby at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a fire protection system is provided for use in an energy storage device, the fire protection system comprising: The first fire-fighting organization has a conductive medium extinguishing agent for thermal management of energy storage equipment based on the conductive medium extinguishing agent; The second fire-fighting unit has an electrically insulating extinguishing agent for thermal management of energy storage equipment based on the electrically insulating extinguishing agent. The first detection mechanism is used to output a first detection signal based on the movement of the fire protection system and / or the energy storage device; The controller is connected to the first fire-fighting mechanism, the second fire-fighting mechanism, and the first detection mechanism. The controller is used to control the first fire-fighting mechanism and / or the second fire-fighting mechanism to perform thermal management on the energy storage device, and the controller can disable or enable the first fire-fighting mechanism according to the first detection signal.

[0006] Optionally, the first detection mechanism includes an acceleration sensor, which is used to output an acceleration signal as a first detection signal based on the motion output of the fire protection system and / or the energy storage device; by disabling or enabling the first fire protection mechanism based on the acceleration signal of the fire protection system and / or the energy storage device as the first detection signal, the controller can prevent the first fire protection mechanism from being falsely activated due to the movement of the energy storage device, thereby preventing irreversible damage to the energy storage device; and / or, The first detection mechanism includes a tilt sensor, which is used to output a tilt angle signal as a first detection signal based on the movement output of the fire protection system and / or the energy storage device. By disabling or enabling the first fire protection mechanism based on the tilt angle signal of the fire protection system and / or the energy storage device as the first detection signal, the controller can prevent the first fire protection mechanism from being falsely activated due to movement of the energy storage device, thus preventing irreversible damage to the energy storage device; and / or, The first detection mechanism includes a gyroscope sensor, and the tilt sensor is used to detect the angular velocity signal as the first detection signal based on the motion output of the fire protection system and / or the energy storage device. Based on the controller disabling or enabling the first fire protection mechanism according to the angular velocity signal of the fire protection system and / or the energy storage device as the first detection signal, the first fire protection mechanism can be prevented from being falsely activated due to the movement of the energy storage device, so as to prevent irreversible damage to the energy storage device.

[0007] By using any two or three of the acceleration signal, tilt angle signal, and angular velocity signal of the fire protection system and / or the energy storage device as the first detection signal, the motion state of the fire protection system and / or the energy storage device can be more accurately confirmed.

[0008] Optionally, the fire protection system includes a manual switch connected to the controller, which can control the controller to disable or enable the first fire protection mechanism.

[0009] The first fire-fighting mechanism can be manually disabled or enabled by a manual switch, making the operation of the fire-fighting mechanism more flexible.

[0010] Optionally, the fire protection system further includes a power connection component, to which the first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller are all connected. The power connection component is used to connect the energy storage device so that the energy storage device can supply power to the first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller. The fire protection system also includes a backup power supply mechanism. The first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller are all connected to the backup power supply mechanism. The backup power supply mechanism is used to supply power to the first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller when the energy storage device disconnects from supplying power to the fire protection system.

[0011] The backup power supply mechanism and the power connection components work together to ensure that the fire protection system is powered by the energy storage device under normal circumstances. When the energy storage device disconnects from the fire protection system due to special circumstances, the backup power supply mechanism can be used to power the fire protection system to ensure that the fire protection system can operate stably.

[0012] Optionally, the backup power supply mechanism includes: A backup supercapacitor, connected to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller, is used to supply power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller when the energy storage device disconnects power to the fire-fighting system; and, A backup battery is connected to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller. The backup battery is used to supply power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller when the energy storage device disconnects from the power supply to the fire-fighting system.

[0013] The backup supercapacitor has the advantage of extremely high charging and discharging efficiency, and the backup battery has the advantage of large energy storage capacity. Based on these advantages, the supercapacitor can quickly provide power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism and the controller in the instant the power supply to the energy storage device is disconnected. Then, the backup battery will stably supply power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism and the controller.

[0014] Optionally, the backup battery and the backup supercapacitor can be charged by the energy storage device to ensure long-term backup power for the backup battery and the backup supercapacitor; and / or, After the backup power supply switches to power the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller, the backup battery can charge the backup supercapacitor. The backup power supply can dynamically allocate the output of the backup battery and the backup supercapacitor according to the power characteristics of the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller. The advantage of the backup supercapacitor is that it can provide and absorb extremely high instantaneous power and has an extremely fast response speed. The disadvantage of the backup battery is that high current discharge will seriously damage its lifespan, leading to internal heating and accelerated capacity decay. In view of this characteristic, when the backup power supply is in operation, the backup battery can charge the backup supercapacitor, and the two work together: when the load requires a large instantaneous current, the supercapacitor handles the power peak, while the battery only needs to provide a stable average power.

[0015] Optionally, the fire protection system further includes a second detection mechanism connected to the controller. The second detection mechanism detects thermal runaway information of the energy storage device. The controller can control the first and / or second fire protection mechanisms to perform thermal management on the energy storage device based on the thermal runaway information. Based on the detection of thermal runaway information by the second detection mechanism, the thermal management of the energy storage device by the first and / or second fire protection mechanisms can be controlled more precisely.

[0016] Optionally, the controller integrates a noise filtering module, which is used to filter out interference information generated by the movement of the energy storage device in the thermal runaway information, so that the second detection agency can detect the thermal runaway information of the energy storage device more accurately and reliably.

[0017] Optionally, the energy storage device includes a battery compartment and an energy storage battery module, the energy storage battery module being disposed within the battery compartment, and the second detection mechanism includes: The first-level detection component is arranged inside the energy storage battery module and is capable of monitoring the first thermal runaway information of the energy storage battery module. The controller is capable of controlling the second fire-fighting agency to perform thermal management of the energy storage battery module based on the first thermal runaway information and the fire extinguishing agent with an electrically insulating medium. The second-level detection component is arranged in the battery compartment of the energy storage device and is capable of monitoring the second thermal runaway information of the battery compartment. The controller is capable of controlling the second fire-fighting mechanism to perform thermal management of the battery compartment based on the first thermal runaway information and the second thermal runaway information.

[0018] By detecting the first thermal runaway information of the energy storage battery module using the first-level detection component and the second thermal runaway information of the battery compartment using the second-level detection component, the controller can control the second fire-fighting agency to perform graded thermal management of the energy storage equipment based on an electrically insulating medium extinguishing agent. Specifically: when only the first thermal runaway information of the energy storage battery module exists, the controller can control the second fire-fighting agency to perform thermal management of the energy storage battery module based on an electrically insulating medium extinguishing agent to achieve module-level thermal management; when both the first and second thermal runaway information exist, the controller can control the second fire-fighting agency to perform thermal management of the battery compartment based on an electrically insulating medium extinguishing agent to achieve compartment-level thermal management.

[0019] Optionally, the controller can, after the second fire-fighting agency has continuously performed thermal management of the battery compartment using an electrically insulating extinguishing agent for a preset time, control the first fire-fighting agency to perform thermal management of the battery compartment using a conductive extinguishing agent. When the second fire-fighting component has been controlled to perform compartment-level thermal management of the battery compartment for a preset time, the controller will upgrade the fire-fighting strategy, activate the first fire-fighting agency, and use a conductive extinguishing agent to implement deep suppression to prevent more destructive fires or explosions; and / or, The second fire protection system includes a first-level fire protection component and a second-level fire protection component. The first-level fire protection component is installed within the energy storage battery module of the energy storage device and is capable of performing thermal management of the energy storage battery module based on an electrically insulating extinguishing agent. The second-level fire protection component is installed within the battery compartment of the energy storage device and is capable of performing thermal management of the battery compartment based on an electrically insulating extinguishing agent. Through module-level thermal management by the first-level fire protection component and compartment-level thermal management by the second-level fire protection component, a full-range thermal management system from module to compartment is constructed through the synergy of the first and second-level fire protection components: precise early suppression is achieved at the module level, and a global safety barrier is provided at the compartment level.

[0020] Optionally, the fire suppression system further includes a pressure relief mechanism, and the second detection mechanism includes a third detection component. The third detection component can output a second detection signal based on the pressure inside the energy storage device, and the controller can control the pressure relief mechanism to discharge gas from the energy storage device based on the first detection signal. Increased pressure is the most dangerous early sign of thermal runaway in energy storage devices. In this application, the controller can determine whether the pressure is approaching a critical point through the second detection signal and can actively control the pressure relief mechanism to discharge flammable gas, thereby fundamentally preventing a physical explosion of the energy storage device due to a sudden increase in internal pressure.

[0021] According to a second aspect of this application, an energy storage device is provided, including the fire protection system described in the first aspect.

[0022] In the fire protection system of this application embodiment, the controller disables or enables the first fire-fighting mechanism based on a first detection signal. This prevents the first fire-fighting mechanism from being mistakenly activated due to the movement of the energy storage device, thus preventing irreversible damage to the energy storage device. Specifically, when the energy storage device is in motion, the controller disables the first fire-fighting mechanism to prevent it from being mistakenly activated under continuous physical disturbance, thereby preventing irreversible damage to the energy storage device by the conductive extinguishing agent. At this time, the second fire-fighting mechanism remains operational to address fire risks. When the energy storage device stops, the controller activates the first fire-fighting mechanism, so that it and the second fire-fighting mechanism together constitute a complete fire protection system.

[0023] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0025] Figure 1 This is a structural block diagram of a fire protection system provided in an exemplary embodiment of this disclosure.

[0026] Figure 2 This is a first-view structural schematic diagram of the energy storage device provided in an exemplary embodiment of this disclosure.

[0027] Figure 3 This is a second-view structural schematic diagram of the energy storage device provided in an exemplary embodiment of this disclosure.

[0028] Figure 4 This is a third-view structural schematic diagram of the energy storage device provided in an exemplary embodiment of this disclosure.

[0029] Figure 5 yes Figure 2 The backup power mechanism of the energy storage device shown.

[0030] Figure 6 yes Figure 2 The diagram shows a first-view structural schematic of the energy storage battery module and the first-level fire protection component of the energy storage device.

[0031] Figure 7 yes Figure 2The diagram shows a second-view structural schematic of the energy storage battery module and the first-level fire protection component of the energy storage device.

[0032] Figure 8 yes Figure 2 The diagram shows the structure of the energy storage battery module, the first detection component, and the first-level fire protection component of the energy storage device.

[0033] Explanation of reference numerals in the attached figures: 10. First fire-fighting unit; 11. First storage tank; 12. First nozzle; 121. First connecting section; 122. First spraying section; 123. First nozzle; 20. Second fire-fighting mechanism; 21. First-level fire-fighting component; 22. Second-level fire-fighting component; 221. Second storage tank; 222. Second nozzle; 2221. Second connecting section; 2222. Second spraying section; 2223. Second sprinkler head; 30. First testing unit; 31. Accelerometer; 32. Tilt sensor; 40. Controller; 50. Backup power supply mechanism; 51. Backup supercapacitor; 52. Backup battery; 53. DC-DC circuit; 60. Second detection unit; 61. First-level detection component; 611. Multi-parameter composite detector; 62. Second-level detection component; 621. Smoke detector; 622. Open flame detector; 623. Temperature detector; 624. Thermal imaging camera; 625. Gas detector; 63. Third detection module; 631. Pressure sensor; 70. Pressure relief mechanism; 71. Electrically controlled pressure relief valve; 80. Alarm mechanism; 81. Audible and visual alarm; 82. Gas release indicator light; 83. Alarm bell; 90. Energy storage equipment; 91. Battery compartment; 92. Electrical compartment; 93. Energy storage battery module; 931. Socket panel; 100. Integrated box; 110. Communication module. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0035] According to a first aspect of this application, a fire protection system is provided, in conjunction with... Figure 1-4It is understood that the fire protection system is applied to the energy storage device 90. The fire protection system includes a first fire protection mechanism 10, a second fire protection mechanism 20, a first detection mechanism 30, and a controller 40. The first fire protection mechanism 10 has a conductive medium extinguishing agent for thermal management of the energy storage device 90 based on the conductive medium extinguishing agent. The second fire protection mechanism 20 has an electrically insulating medium extinguishing agent for thermal management of the energy storage device 90 based on the electrically insulating medium extinguishing agent. The first detection mechanism 30 is used to output a first detection signal based on the movement of the fire protection system and / or the energy storage device 90. The first fire protection mechanism 10, the second fire protection mechanism 20, and the first detection mechanism 30 are all connected to the controller 40. The controller 40 is used to control the first fire protection mechanism 10 and / or the second fire protection mechanism 20 to perform thermal management of the energy storage device 90, and the controller 40 can disable or enable the first fire protection mechanism 10 based on the first detection signal.

[0036] Specifically, Figure 1 This is a structural schematic diagram of an energy storage device viewed from the front. Figure 2 This is a side view structural diagram of the energy storage device. Figure 3 This is a structural schematic diagram of an energy storage device from a rear-view perspective.

[0037] In this embodiment, the controller 40 disables or enables the first fire-fighting mechanism 10 based on the first detection signal, which can prevent the first fire-fighting mechanism 10 from being mistakenly activated due to the movement of the energy storage device 90, thus preventing irreversible damage to the energy storage device 90. Specifically, when the energy storage device 90 is in a moving state, the controller 40 disables the first fire-fighting mechanism 10 to prevent it from being mistakenly activated under continuous physical disturbance, thereby preventing the conductive extinguishing agent from causing irreversible damage to the energy storage device 90; at this time, the second fire-fighting mechanism 20 remains operational to deal with fire risks. When the energy storage device 90 stops, the controller 40 activates the first fire-fighting mechanism 10, so that it and the second fire-fighting mechanism 20 together constitute a complete fire protection system.

[0038] For example, conductive media extinguishing agents include water-based extinguishing agents, such as one or more of water-based extinguishing agents, water-based extinguishing agents, and foam extinguishing agents.

[0039] Electrically insulating extinguishing agents include one or more of the following: perfluorohexanone, heptafluoropropane, carbon oxidizer, and liquid nitrogen.

[0040] In some embodiments, the first detection mechanism 30 includes an acceleration sensor 31, which is used to output an acceleration signal as a first detection signal based on the motion output of the fire protection system and / or energy storage device 90; the controller 40 disables or enables the first fire protection mechanism 10 based on the acceleration signal of the fire protection system and / or energy storage device 90 as the first detection signal, which can prevent the first fire protection mechanism 10 from being falsely activated due to the movement of the energy storage device 90, thereby preventing irreversible damage to the energy storage device; and / or, The first detection mechanism 30 includes a tilt sensor 32, which is used to output a tilt angle signal as a first detection signal based on the movement of the fire protection system and / or energy storage device 90. Based on the tilt angle signal of the fire protection system and / or energy storage device 90 as the first detection signal, the controller 40 disables or enables the first fire protection mechanism 10, thereby preventing accidental activation of the first fire protection mechanism 10 due to movement of the energy storage device 90 and preventing irreversible damage to the energy storage device; and / or, The first detection mechanism 30 includes a gyroscope sensor and an tilt sensor 32 for using an angular velocity signal as a first detection signal based on the motion output of the fire protection system and / or energy storage device 90. The controller 40 disables or enables the first fire protection mechanism 10 based on the angular velocity signal of the fire protection system and / or energy storage device 90 as the first detection signal, which can prevent the first fire protection mechanism 10 from being falsely activated due to the movement of the energy storage device 90, thereby preventing irreversible damage to the energy storage device.

[0041] By using any two or three of the acceleration signal, tilt angle signal, and angular velocity signal of the fire protection system and / or energy storage device 90 as the first detection signal, the motion state of the fire protection system and / or energy storage device 90 can be more accurately confirmed.

[0042] In some embodiments, the fire protection system includes a manual switch connected to a controller 40, which can control the controller 40 to disable or enable the first fire protection mechanism 10.

[0043] The first fire-fighting mechanism 10 can be disabled or enabled by manually controlling the controller 40 via a manual switch, making the operation of the fire-fighting mechanism more flexible.

[0044] In some embodiments, combined with Figure 5 It is known that the fire protection system also includes a power connection component. The first fire protection mechanism 10, the second fire protection mechanism 20, the first detection mechanism 30 and the controller 40 are all connected to the power connection component, and the power connection component is used to connect the energy storage device 90 so that the energy storage device 90 can supply power to the first fire protection mechanism 10, the second fire protection mechanism 20, the first detection mechanism 30 and the controller 40. The fire protection system also includes a backup power supply mechanism 50. The first fire protection mechanism 10, the second fire protection mechanism 20, the first detection mechanism 30 and the controller 40 are all connected to the backup power supply mechanism 50. The backup power supply mechanism 50 is used to supply power to the first fire protection mechanism 10, the second fire protection mechanism 20, the first detection mechanism 30 and the controller 40 when the energy storage device 90 disconnects the power supply to the fire protection system.

[0045] The backup power supply mechanism 50 and the power connection components work together to ensure that the fire protection system is powered by the energy storage device 90 under normal circumstances. When the energy storage device 90 disconnects from the fire protection system due to some special circumstances, the backup power supply mechanism 50 can be used to power the fire protection system to ensure that the fire protection system can operate stably.

[0046] For example, the power connection assembly may include a wiring harness for electrical connection between the fire protection system and the energy storage device 90, so that the energy storage device 90 can supply power to functional devices of the fire protection system, such as the first fire protection mechanism 10, the second fire protection mechanism 20, the first detection mechanism 30, and the controller 40, through the wiring harness.

[0047] In some embodiments, the backup power supply mechanism 50 includes a backup supercapacitor 51 and a backup battery 52. ​​The backup supercapacitor 51 is connected to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40. The backup supercapacitor 51 is used to supply power to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40 when the energy storage device 90 disconnects its power supply to the fire-fighting system. The backup battery 52 is connected to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40. The backup battery 52 is used to supply power to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40 when the energy storage device 90 disconnects its power supply to the fire-fighting system.

[0048] The backup supercapacitor 51 has the advantage of extremely high charging and discharging efficiency, and the backup battery 52 has the advantage of large energy storage capacity. Based on the combination of the advantages of the two, the supercapacitor can quickly provide power at the moment the power supply to the energy storage device 90 is disconnected, so as to provide power to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30 and the controller 40 in a timely manner, and then the backup battery 52 provides stable power to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30 and the controller 40.

[0049] For example, the backup supercapacitor 51 may include one or more supercapacitors; the backup battery 52 may include one or more lithium batteries.

[0050] In some embodiments, the backup power supply mechanism 50 further includes two DC-DC circuits 53. One DC-DC circuit 53 is used to connect the loads such as the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40 to the backup supercapacitor 51, so as to convert the output voltage of the backup supercapacitor 51 to meet the usage requirements of each load. The other DC-DC circuit 53 is used to connect the loads such as the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40 to the backup battery 52, so as to convert the output voltage of the backup battery 52 to meet the usage requirements of each load.

[0051] In some embodiments, the backup battery 52 and the backup supercapacitor 51 can be charged by the energy storage device 90 to ensure long-term backup power for the backup battery 52 and the backup supercapacitor 51; and / or, After the backup power supply mechanism 50 switches to supply power to the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40, the backup battery 52 can charge the backup supercapacitor 51. The backup power supply mechanism 50 can dynamically allocate the output of the backup battery 52 and the backup supercapacitor 51 according to the power characteristics of the first fire-fighting mechanism 10, the second fire-fighting mechanism 20, the first detection mechanism 30, and the controller 40. The advantage of the backup supercapacitor 51 is that it can provide and absorb extremely high instantaneous power and has an extremely fast response speed. The disadvantage of the backup battery 52 is that high current discharge will seriously damage its lifespan, leading to internal heating and accelerated capacity decay. In view of this characteristic, when the backup power supply is in operation, the backup battery 52 can charge the backup supercapacitor 51, and the two work together: when the load requires a large instantaneous current, the supercapacitor handles the power peak, while the battery only needs to provide a stable average power.

[0052] In some embodiments, the fire protection system further includes a second detection mechanism 60 connected to the controller 40. The second detection mechanism 60 is used to detect thermal runaway information of the energy storage device 90. The controller 40 can control the first fire protection mechanism 10 and / or the second fire protection mechanism 20 to perform thermal management on the energy storage device 90 based on the thermal runaway information. Based on the detection of thermal runaway information by the second detection mechanism 60, the thermal management of the energy storage device 90 by the first fire protection mechanism 10 and / or the second fire protection mechanism 20 can be controlled more accurately.

[0053] In some embodiments, the controller 40 integrates a noise filtering module, which is used to filter out interference information generated by the movement of the energy storage device 90 in the thermal runaway information, so that the second detection mechanism 60 can detect the thermal runaway information of the energy storage device 90 more accurately and reliably.

[0054] For example, the noise filtering module can suppress or eliminate the interference information (noise) generated by the movement of the energy storage device 90 and the thermal runaway signal based on the differences in frequency, amplitude, correlation or statistical characteristics, thereby extracting real and accurate thermal runaway characteristic information.

[0055] In some embodiments, combined with Figure 6-8 It can be seen that the energy storage device 90 includes a battery compartment 91 and an energy storage battery module 93. The energy storage battery module 93 is installed inside the battery compartment 91. The second detection mechanism 60 includes a first-level detection component 61 and a second-level detection component 62. The first-level detection component 61 is arranged inside the energy storage battery module 93 and can monitor the first thermal runaway information of the energy storage battery module 93. The controller 40 can control the second fire-fighting mechanism 20 to perform thermal management of the energy storage battery module 93 based on the electrical insulating medium fire extinguishing agent according to the first thermal runaway information. The second-level detection component 62 is installed in the battery compartment 91 of the energy storage device 90 and can monitor the second thermal runaway information of the battery compartment 91. The controller 40 can control the second fire-fighting mechanism 20 to perform thermal management of the battery compartment 91 based on the first thermal runaway information and the second thermal runaway information.

[0056] By detecting the first thermal runaway information of the energy storage battery module 93 using the first-level detection component 61 and the second thermal runaway information of the battery compartment 91 using the second-level detection component 62, the controller 40 can control the second fire-fighting mechanism 20 to perform graded thermal management of the energy storage device 90 based on an electrically insulating medium extinguishing agent. Specifically, when only the first thermal runaway information of the energy storage battery module 93 exists, the controller 40 can control the second fire-fighting mechanism 20 to perform thermal management of the energy storage battery module 93 based on an electrically insulating medium extinguishing agent to achieve module-level thermal management; when both the first and second thermal runaway information exist, the controller 40 can control the second fire-fighting mechanism 20 to perform thermal management of the battery compartment 91 based on an electrically insulating medium extinguishing agent to achieve compartment-level thermal management.

[0057] In some embodiments, the first-level detection component 61 includes a multi-parameter composite detector 611, which can detect parameters such as temperature, volatile organic compound concentration, carbon monoxide concentration, and hydrogen concentration of the energy storage battery module 93. The first thermal runaway information includes parameters such as temperature, volatile organic compound concentration, carbon monoxide concentration, and hydrogen concentration of the energy storage battery module 93 detected by the multi-parameter composite detector 611. It can achieve very early warning by capturing the earliest gas evolution characteristics when the energy storage battery module 93 experiences thermal runaway.

[0058] In some embodiments, the second-level detection component 62 includes a smoke detector 621, an open flame detector 622, a temperature detector 623, and a thermal imaging camera 624, all of which are disposed within the battery compartment 91.

[0059] Among them, smoke detector 621 and open flame detector 622 are used to detect smoke and open flame in battery compartment 91, temperature detector 623 is used to detect temperature in battery compartment 91, gas detector 625 is used to detect the concentration of some combustible and toxic gases in battery compartment 91, and the second thermal runaway information includes the information detected by smoke detector 621, open flame detector 622, gas detector 625 and temperature detector 623.

[0060] The thermal imaging camera 624 can perform a full-area temperature scan of the battery compartment 91, accurately locate the high-temperature area of ​​thermal runaway inside the battery compartment 91, and then the first fire-fighting mechanism 10 performs thermal management of the battery compartment 91 based on conductive medium fire extinguishing agent to continuously cool down the high-temperature area and prevent reignition.

[0061] For example, smoke detector 621, open flame detector 622, temperature detector 623 and thermal imaging camera 624 are all located above the energy storage battery module 93 inside the battery compartment 91.

[0062] In some embodiments, after the second fire-fighting mechanism 20 continuously performs thermal management of the battery compartment 91 based on an electrically insulating extinguishing agent for a preset time, the controller 40 can control the first fire-fighting mechanism 10 to perform thermal management of the battery compartment 91 based on a conductive extinguishing agent. That is, after the second-level fire-fighting component 22 performs compartment-level thermal management of the battery compartment 91 for a preset time, the controller 40 will upgrade the fire-fighting strategy, activate the first fire-fighting mechanism 10, spray conductive extinguishing agent into the battery compartment 91, and even immerse the energy storage battery module 93 in the battery compartment 91 with conductive extinguishing agent to continuously cool the energy storage battery module 93 in the battery compartment 91 to prevent reignition, thereby preventing more destructive fires or explosions; and / or, The second fire protection system 20 includes a first-level fire protection component 21 and a second-level fire protection component 22. The first-level fire protection component 21 is installed within the energy storage battery module 93 of the energy storage device 90, enabling thermal management of the energy storage battery module 93 based on an electrically insulating extinguishing agent. The second-level fire protection component 22 is installed within the battery compartment 91 of the energy storage device 90, enabling the spraying of an electrically insulating extinguishing agent within the battery compartment 91, and even allowing the electrically insulating extinguishing agent to submerge the energy storage battery module 93 within the battery compartment 91, thereby enabling thermal management of the battery compartment 91 based on an electrically insulating extinguishing agent. Through module-level thermal management by the first-level fire protection component 21 and compartment-level thermal management by the second-level fire protection component 22, a full-range thermal management system from module to compartment is constructed through the synergy of the first-level fire protection component 21 and the second-level fire protection component 22: precise early suppression is achieved at the module level, and a global safety barrier is provided at the compartment level.

[0063] For example, the preset time can be set according to different energy storage devices. The first-level fire-fighting component 21 is a non-pressurized perfluorohexanone fire extinguishing device. When the energy storage battery module 93 experiences thermal runaway, the first-level fire-fighting component 21 can activate the internal gas generator through electric start or thermal start, instantly generating high-pressure gas to drive the perfluorohexanone fire extinguishing agent to be directly sprayed into the energy storage battery module 93 for thermal management of the energy storage battery module 93.

[0064] In some embodiments, the energy storage battery module 93 has a socket panel 931, with the first-level fire-fighting component 21 and the socket panel 931 located on the same side of the energy storage battery module 93 for easy commissioning.

[0065] In some embodiments, the fire suppression system further includes a pressure relief mechanism 70, and the second detection mechanism 60 includes a third detection component. The third detection component can output a second detection signal based on the pressure inside the energy storage device 90, and the controller 40 can control the pressure relief mechanism 70 to discharge gas from the energy storage device 90 based on the first detection signal. Increased pressure is the most dangerous early sign of thermal runaway in the energy storage device 90. In this application, the controller 40 can determine whether the pressure is approaching a critical point through the second detection signal and can actively control the pressure relief mechanism 70 to discharge flammable gas, thereby fundamentally preventing a physical explosion of the energy storage device 90 due to a sudden increase in internal pressure.

[0066] In some embodiments, the third detection module 63 includes a pressure sensor 631, which can monitor the pressure change inside the battery compartment 91 in real time and output a second detection signal as a linkage start signal for the pressure relief mechanism 70.

[0067] In some embodiments, the pressure relief mechanism 70 includes a plurality of electrically controlled pressure relief valves 71, each having a fan for discharging flammable and hazardous gases from the battery compartment 91. The electrically controlled pressure relief valves 71 can control their opening degree and / or fan speed according to a second detection signal (a signal corresponding to the air pressure in the battery compartment 91).

[0068] In some embodiments, the fire protection system further includes an alarm mechanism 80, which includes fire alarm devices such as an audible and visual alarm 81, a gas release indicator light 82, and an alarm bell 83. The controller 40 can control one or more of the audible and visual alarm 81, the gas release indicator light 82, and the alarm bell 83 to sound an alarm according to the thermal runaway level of the energy storage device 90, so that the fire protection system has a multi-level alarm function.

[0069] In some embodiments, the energy storage device 90 further includes an electrical compartment 92, which is isolated from the battery compartment 91 to prevent thermal runaway of the energy storage battery module in the battery compartment 91 from affecting the electrical compartment 92 and causing the entire energy storage device 90 to fail completely.

[0070] In some embodiments, the fire protection system further includes an integration box 100, in which the controller 40, the backup power supply mechanism 50, and the first detection mechanism 30 are all housed. The integration box 100 enhances the integration of the fire protection system and facilitates its installation and commissioning.

[0071] For example, the integration box 100 is disposed within the electrical compartment 92.

[0072] In some embodiments, the fire protection system further includes a communication module 110, which is connected to the controller 40. The controller 40 can communicate with external systems through the communication module 110 to display the status of the fire protection system to the external system and / or to allow the external system to control the controller 40.

[0073] For example, the communication module 110 is disposed within the integration box 100.

[0074] In some embodiments, the first fire-fighting mechanism 10 includes a first storage tank 11 and a first nozzle 12. The first storage tank 11 is provided with a conductive medium extinguishing agent and is disposed in an integrated box 100. The first nozzle 12 includes a first connecting section 121 and a first spraying section 122 that are connected to each other. The first connecting section 121 is located in the electrical compartment 92 and is connected to the first storage tank 11. The first spraying section 122 is disposed in the battery compartment 91 and has a plurality of first nozzles 123 that are capable of atomizing and spraying the conductive medium extinguishing agent.

[0075] For example, the first nozzle 12 can also be connected to a liquid storage container on the mobile device carrying the energy storage device 90, so as to atomize and spray the conductive medium fire extinguishing agent in the liquid storage container on the mobile device into the battery compartment 91; the first nozzle 12 can also be connected to a municipal water supply system, so as to atomize and spray the conductive medium fire extinguishing agent provided by the municipal water supply system into the battery compartment 91.

[0076] In some embodiments, the first nozzle 12 is located above the energy storage battery module 93 inside the battery compartment 91, and there are one or more nozzles.

[0077] In some embodiments, the second-level fire-fighting component 22 includes a second storage tank 221 and a second nozzle 222. The second storage tank 221 contains an electrically insulating extinguishing agent and is located within the integrated box 100. The second nozzle 222 includes a second connecting section 2221 and a second spraying section 2222 connected to each other. The second connecting section 2221 is located within the electrical compartment 92 and is connected to the second storage tank 221. The second spraying section 2222 is located within the battery compartment 91 and has multiple second nozzles 2223 capable of atomizing and spraying the electrically insulating extinguishing agent.

[0078] For example, there can be multiple energy storage battery modules 93, which can be stacked to form one or more battery clusters; wherein, there are multiple first-level fire-fighting components 21, and each of the multiple first-level fire-fighting components 21 corresponds to one of the multiple energy storage battery modules 93.

[0079] In some embodiments, the second nozzle 222 is located above the energy storage battery module 93 inside the battery compartment 91, and there are one or more nozzles.

[0080] In some embodiments, the first storage tank 11 and the second storage tank 221 are both fixed inside the integrated box 100 using straps, clamps and shock-absorbing bases designed specifically for transportation. The first connecting section 121 and the second connecting section 2221 can both be flexible hoses or rigid pipes with buffer joints to avoid the first nozzle 12 and the second nozzle 222 from cracking due to stress concentration caused by deformation or vibration of the integrated box 100.

[0081] In some embodiments, both the first nozzle 12 and the second nozzle 222 are provided with a drain valve and an air vent valve to facilitate the drainage of accumulated water during fire protection system maintenance and ensure that the system is dry before relocation.

[0082] For example, the materials of the first nozzle 12 and the second nozzle 222 include aluminum alloy. The materials of the first storage tank 11 and the second storage tank 221 include one or more of carbon fiber reinforced composite materials, glass fiber reinforced composite materials, aramid fiber reinforced composite materials, and thermoplastic composite materials, for example, including carbon fiber reinforced epoxy resin or glass fiber reinforced polyester or aramid fiber reinforced epoxy resin or long glass fiber reinforced polypropylene.

[0083] In some embodiments, the second detection mechanism 60 further includes a fourth detection component, which is used to monitor the status of the door of the battery compartment 91 and / or the status of the door of the electrical compartment 92, and can feed back to the controller 40 when the status of the door of the battery compartment 91 and / or the status of the door of the electrical compartment 92 is abnormal, so that the controller 40 controls the alarm mechanism 80 to sound an alarm.

[0084] For example, when the energy storage device 90 and the fire protection system are in a mobile state, and the door of the battery compartment 91 is open and / or the door of the electrical compartment 92 is open, the state of the door of the battery compartment 91 and / or the state of the door of the electrical compartment 92 is abnormal; the fourth detection component may include one or more of micro switches, magnetic induction sensors, proximity sensors, rotary encoders and vision sensors.

[0085] For example, all sensors, detectors and their connectors in the testing organization are secured with anti-loosening threaded locks, spring damping washers or snap-on mounting bases to ensure they do not fail under long-term vibration.

[0086] The working process of a fire extinguishing system is as follows: Primary defense: When the composite detector inside the energy storage battery module 93 detects thermal runaway, it activates the non-pressurized perfluorohexanone fire extinguishing device inside the energy storage battery module 93 to extinguish the fire inside the energy storage battery module 93. If the fire is extinguished successfully, the alarm is lifted. If the fire fails to be extinguished and spreads to the compartment level, the secondary defense is activated. Secondary defense: When the signals from the composite detector, as well as the signals from the composite detector, smoke detector 621, open flame detector 622, and temperature detector 623 appear together, the controller 40 determines that the battery compartment 91 has thermal runaway / fire. All power except for the fire protection system is cut off, the pressure relief mechanism 70 is closed to form a sealed protective zone for the battery compartment 91, and the second-level fire protection component 22 of the compartment is activated after a delay to extinguish the fire by fully immersing the entire compartment with gas. The perfluorohexanone extinguishing agent in the second storage tank 221 is sprayed and atomized through the second nozzle 222 and the second nozzle 2223 to flood the entire battery compartment 91 for fire extinguishing. If the fire is successfully extinguished, the alarm is lifted. If the fire still cannot be contained, the tertiary defense is activated. Level 3 protection: When the Level 2 protection is activated and the preset time is reached, the water-based fire extinguishing agent is sprayed and atomized through the first nozzle 12 and the first nozzle 123 to flood the entire battery compartment 91 for fire extinguishing. The thermal imaging detection of the high-temperature area is used to identify and determine whether to cool down. After continuous cooling to prevent the battery compartment 91 from reigniting, the pressure relief mechanism 70 is activated to discharge the residual exhaust gas. According to a second aspect of this application, an energy storage device 90 is provided, including the fire protection system of the first aspect.

[0087] In the description of this application, "and / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / ", unless otherwise specified, generally indicates that the related objects before and after it are in an "or" relationship.

[0088] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0089] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0090] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0091] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A fire protection system applied to energy storage equipment, characterized in that, The fire protection system includes: The first fire-fighting organization has a conductive medium extinguishing agent for thermal management of energy storage equipment based on the conductive medium extinguishing agent; The second fire-fighting unit has an electrically insulating extinguishing agent for thermal management of energy storage equipment based on the electrically insulating extinguishing agent. The first detection mechanism is used to output a first detection signal based on the movement of the fire protection system and / or the energy storage device; The controller is connected to the first fire-fighting mechanism, the second fire-fighting mechanism, and the first detection mechanism. The controller is used to control the first fire-fighting mechanism and / or the second fire-fighting mechanism to perform thermal management on the energy storage device, and the controller can disable or enable the first fire-fighting mechanism according to the first detection signal.

2. The fire protection system according to claim 1, characterized in that, The first detection mechanism includes an accelerometer, which is used to detect an acceleration signal based on the motion output of the fire protection system and / or the energy storage device as a first detection signal; and / or, The first detection mechanism includes a tilt sensor, which is used to obtain a tilt angle signal as a first detection signal based on the motion output of the fire protection system and / or the energy storage device; and / or, The first detection mechanism includes a gyroscope sensor, and the tilt sensor is used to obtain an angular velocity signal as a first detection signal based on the motion output of the fire protection system and / or the energy storage device.

3. The fire protection system according to claim 1, characterized in that, The fire protection system includes a manual switch connected to the controller, which can control the controller to disable or enable the first fire protection mechanism.

4. The fire protection system according to any one of claims 1-3, characterized in that, The fire protection system also includes a power connection component, to which the first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller are all connected. The power connection component is used to connect the energy storage device so that the energy storage device can supply power to the first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller. The fire protection system also includes a backup power supply mechanism. The first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller are all connected to the backup power supply mechanism. The backup power supply mechanism is used to supply power to the first fire protection mechanism, the second fire protection mechanism, the first detection mechanism, and the controller when the energy storage device disconnects from supplying power to the fire protection system.

5. The fire protection system according to claim 4, characterized in that, The backup power supply mechanism includes: A backup supercapacitor, connected to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller, is used to supply power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller when the energy storage device disconnects power to the fire-fighting system; and, A backup battery is connected to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller. The backup battery is used to supply power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller when the energy storage device disconnects from the power supply to the fire-fighting system.

6. The fire protection system according to claim 5, characterized in that, The backup battery and the backup supercapacitor can be charged by the energy storage device; and / or After the backup power supply mechanism switches to supply power to the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller, the backup battery can charge the backup supercapacitor. The backup power supply mechanism can dynamically allocate the output of the backup battery and the backup supercapacitor according to the power characteristics of the first fire-fighting mechanism, the second fire-fighting mechanism, the first detection mechanism, and the controller.

7. The fire protection system according to any one of claims 1-6, characterized in that, The fire protection system also includes a second detection mechanism connected to the controller. The second detection mechanism is used to detect thermal runaway information of the energy storage device. The controller can control the first fire protection mechanism and / or the second fire protection mechanism to perform thermal management on the energy storage device based on the thermal runaway information.

8. The fire protection system according to claim 7, characterized in that, The controller integrates a noise filtering module, which is used to filter out interference information generated by the movement of the energy storage device in the thermal runaway information.

9. The fire protection system according to claim 7, characterized in that, The energy storage device includes a battery compartment and an energy storage battery module, the energy storage battery module being disposed within the battery compartment, and the second detection mechanism includes: The first-level detection component is arranged inside the energy storage battery module and is capable of monitoring the first thermal runaway information of the energy storage battery module. The controller is capable of controlling the second fire-fighting agency to perform thermal management of the energy storage battery module based on the first thermal runaway information and the fire extinguishing agent with an electrically insulating medium. The second-level detection component is arranged in the battery compartment of the energy storage device and is capable of monitoring the second thermal runaway information of the battery compartment. The controller is capable of controlling the second fire-fighting mechanism to perform thermal management of the battery compartment based on the first thermal runaway information and the second thermal runaway information.

10. The fire protection system according to claim 9, characterized in that, The controller is capable of controlling the first fire-fighting organization to perform thermal management of the battery compartment using a conductive medium extinguishing agent after the second fire-fighting organization has continuously performed thermal management of the battery compartment using an electrically insulating medium extinguishing agent for a preset time; and / or, The second fire protection mechanism includes a first-level fire protection component and a second-level fire protection component. The first-level fire protection component is arranged inside the energy storage battery module of the energy storage device and is capable of performing thermal management of the energy storage battery module based on an electrically insulating fire extinguishing agent. The second-level fire protection component is arranged inside the battery compartment of the energy storage device and is capable of performing thermal management of the battery compartment based on an electrically insulating fire extinguishing agent.

11. The fire protection system according to claim 7, characterized in that, The fire protection system also includes a pressure relief mechanism, and the second detection mechanism includes a third detection component. The third detection component can output a second detection signal based on the pressure inside the energy storage device, and the controller can control the pressure relief mechanism to discharge the gas inside the energy storage device based on the first detection signal.

12. An energy storage device, characterized in that, Including the fire protection system as claimed in any one of claims 1-11.

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