Energy storage power supply

Abstract

The invention discloses an energy storage power supply, which comprises a shell, a battery module, a fire-fighting module and a control module, and is characterized in that the battery module, the fire-fighting module and the control module are arranged in the shell; the control module is electrically connected with the battery module and is configured to monitor the battery state information of the battery module, and under the condition that the battery state information of the battery module is abnormal, the battery module is controlled to reduce the charging and discharging power of the battery module or cut off a charging and discharging loop based on the battery state information; the fire-fighting module comprises a passive triggering module and an active triggering module, and the fire-fighting module fills the shell with a fire extinguishing agent under the condition that the preset detection area meets the triggering condition of the passive triggering module; the active trigger module is electrically connected with the control module and used for receiving a trigger signal of the control module and controlling the fire extinguishing module to fill the shell with a fire extinguishing agent. Therefore, through multiple thermal runaway protection mechanisms, the thermal runaway risk of the energy storage power supply can be effectively reduced, and the safety performance of the energy storage power supply is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage power supply. Background Art

[0002] In recent years, with the growing demand for electricity, indoor and outdoor energy storage power supplies have been widely promoted and applied. These systems are typically built with high-energy-density lithium-ion batteries (such as lithium iron phosphate). Outdoor energy storage power supplies primarily meet outdoor power needs such as outdoor work, camping, road trips, and disaster relief, while indoor energy storage power supplies primarily meet indoor power needs such as household loads, power outage emergencies, and "self-generation for personal use with surplus power connected to the grid."

[0003] However, energy storage power supplies include electrical components such as battery cells, inverters, battery protection boards, and monitoring circuit boards. These components can experience thermal runaway due to factors such as overcharging and overheating, instantly releasing large amounts of heat. This heat can then be transferred to surrounding electrical components, causing them to also experience thermal runaway, leading to widespread thermal runaway. According to a survey by the European Photovoltaic Association, nearly 80% of potential users forgo purchasing energy storage power supplies due to safety concerns. Therefore, the detection and prevention of thermal runaway is a critical technical issue that urgently needs to be addressed to ensure the safety of energy storage power supplies. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application needs to provide an energy storage power supply.

[0005] The energy storage power supply of the embodiment of the present application includes a housing, a battery module, a fire protection module and a control module, wherein the battery module, the fire protection module and the control module are arranged in the housing;

[0006] The control module is electrically connected to the battery module and configured to monitor battery status information of the battery module. When the battery status information of the battery module is abnormal, the control module controls the battery module to reduce the charge and discharge power of the battery module or cut off the charge and discharge circuit of the battery module based on the battery status information.

[0007] The fire-fighting module includes a passive triggering module and an active triggering module. The passive triggering module is placed in a preset detection area in the shell. When the preset detection area meets the triggering condition of the passive triggering module, the fire-fighting module fills the shell with fire extinguishing agent; the active triggering module is electrically connected to the control module, and the active triggering module is used to receive the triggering signal of the control module and control the fire-fighting module to fill the shell with the fire extinguishing agent.

[0008] In certain embodiments, the shell of the energy storage power supply further includes a shell explosion-proof valve, which is configured to be triggered to open and release pressure when the air pressure in the shell reaches a preset threshold.

[0009] In some embodiments, the control module is also used to: after reducing the charge and discharge power of the battery module or cutting off the charge and discharge circuit of the battery module, and when it is monitored that the duration of the abnormality in the battery status information of the battery module reaches a threshold duration, send the trigger signal to the active trigger module.

[0010] In certain embodiments, the passive trigger module includes a flexible temperature probe.

[0011] In certain embodiments, the flexible temperature probe comprises a thermal wire.

[0012] In certain embodiments, the passive trigger module further includes at least one of a smoke sensor, a gas sensor, and an electrochemical sensor.

[0013] In some embodiments, the trigger signal is generated when the control module is disconnected from the active trigger module; or

[0014] The trigger signal is generated when the control module and the active trigger module form a closed loop.

[0015] In certain embodiments, the control module communicates with a cloud platform, and the control module is further configured to receive a passive trigger signal from the active trigger module and send the passive trigger signal to the cloud platform.

[0016] In certain embodiments, the energy storage power supply further includes a battery cell explosion-proof valve, which is integrated into the battery module and is located on a side where the electrode terminals are provided.

[0017] In certain embodiments, the preset detection area is located on a side of the battery module where the electrode terminals are provided.

[0018] In the energy storage power supply of the present application, a fire protection module and a control module are collaboratively configured. The control module monitors battery status information in real time and, upon detecting an anomaly, promptly reduces the battery module's charge and discharge power or disconnects the circuit, effectively delaying or blocking the thermal runaway process and thus curbing the risk of escalation at the source. The fire protection module, through both active and passive triggering, ensures rapid intervention from the initial stage of battery anomaly to the thermal runaway stage. This approach not only reduces battery damage through early intervention but also efficiently extinguishes fires when risks escalate, comprehensively reducing safety hazards such as fires and explosions, significantly improving the operational safety and reliability of the energy storage power supply and extending the equipment's service life.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a schematic diagram of a module of an energy storage power supply according to certain embodiments of the present application;

[0022] Figure 2 It is a schematic structural diagram of an energy storage power supply according to certain embodiments of the present application;

[0023] Figure 3 is an exploded schematic diagram of an energy storage power supply according to certain embodiments of the present application;

[0024] Figure 4 This is another exploded schematic diagram of the energy storage power supply according to certain embodiments of the present application;

[0025] Figure 5 is an exploded schematic diagram of a battery cell according to certain embodiments of the present application.

[0026] Description of Reference Numerals

[0027] Energy storage power supply 100, shell 10, battery module 20, battery cell 21, accommodating cavity 211, end cover 212, electrode assembly 213, electrode terminal 214, fire protection module 30, passive trigger module 31, active trigger module 32, control module 40, shell explosion-proof valve 50, battery cell explosion-proof valve 51. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0029] The energy storage power supply in the present invention may refer to a household energy storage power supply, a balcony solar storage power supply, or a portable energy storage power supply, wherein:

[0030] Home energy storage power supplies typically refer to larger-capacity battery energy storage devices (such as lithium-ion battery packs), often used in conjunction with rooftop photovoltaic systems. Its core function is to store excess electricity generated by photovoltaic power generation or to utilize low-priced electricity during off-peak hours on the grid. During periods of insufficient photovoltaic power generation (such as at night or on rainy days) or peak grid electricity prices, energy storage power supplies can release electricity for home use, significantly increasing household energy self-sufficiency, reducing electricity bills, and providing critical backup power during grid outages. These systems generally require professional installation and have capacities ranging from 5kWh to tens of kWh. They are suitable for households with stable electricity needs, those pursuing energy independence, or those coping with frequent power outages.

[0031] The balcony photovoltaic power supply is a miniaturized, modular, plug-and-play photovoltaic power generation + energy storage solution designed for apartment residents, renters or families with limited space. It usually contains 1-2 small photovoltaic panels (with a power of about 200W to 800W) that can be directly installed on the balcony, windowsill or exterior wall, and an integrated or split small-capacity energy storage device (such as 0.5kWh-2kWh). Its core is to use the balcony space to generate electricity on-site, giving priority to small-power electrical appliances (such as lighting, routers, small appliances) on the balcony or nearby. Excess electricity can be stored or fed into the grid (in areas where grid connection is allowed). It is extremely easy to install, does not require the modification of the house circuit (usually directly plugged into the wall), has a low investment threshold, and its main purpose is to reduce some daily electricity costs and experience green power generation.

[0032] Portable energy storage power supplies are designed for outdoor activities, mobile office work, or emergency backup. They typically use high-energy-density lithium-ion or lithium iron phosphate batteries, with capacities ranging from a few hundred watt-hours to several kilowatt-hours. They feature multiple interfaces, including AC (alternating current) output, DC (like a car charger), and USB fast charging, allowing them to directly power laptops, small appliances (such as rice cookers and electric fans), drones, cameras, mobile phones, and more. Their key features are lightness, portability, ease of operation, and immediate power availability. They also support solar panel charging, making them an ideal power solution for camping, road trips, disaster relief, or temporary power outages at home.

[0033] See also Figure 1 The embodiment of the present application provides an energy storage power supply 100, which includes a shell 10, a battery module 20, a fire protection module 30 and a control module 40. The battery module 20, the fire protection module 30 and the control module 40 are arranged in the shell 10.

[0034] The control module 40 is electrically connected to the battery module 20 and is configured to monitor the battery status information of the battery module 20. When the battery status information of the battery module 20 is abnormal, the control module 40 controls the battery module 20 to reduce the charge and discharge power of the battery module 20 or cut off the charge and discharge circuit of the battery module 20 based on the battery status information.

[0035] The fire protection module 30 includes a passive trigger module 31 and an active trigger module 32. The passive trigger module 31 is placed in a preset detection area inside the shell 10. When the preset detection area meets the triggering conditions of the passive trigger module 31, the fire protection module 30 fills the shell 10 with fire extinguishing agent; the active trigger module 32 is electrically connected to the control module 40. The active trigger module 32 is used to receive the trigger signal of the control module 40 and control the fire protection module 30 to fill the shell 10 with fire extinguishing agent.

[0036] In the energy storage power supply 100 of the embodiment of the present application, the fire protection module 30 and the control module 40 are collaboratively configured. The control module 40 monitors the battery status information in real time and promptly reduces the charge and discharge power of the battery module 20 or cuts off the circuit when an abnormality is detected, effectively delaying or blocking the thermal runaway process of the battery module 20, thereby curbing the risk expansion at the source. The fire protection module 30 realizes active and passive triggering of fire extinguishing by the configuration of the passive trigger module and the active trigger module, ensuring rapid intervention from the initial stage of abnormality to the thermal runaway stage of the battery module 20. In this way, the damage to the battery module 20 is reduced through early intervention, and the fire can be extinguished efficiently when the risk escalates, thereby comprehensively reducing safety hazards such as fire and explosion, significantly improving the operational safety and reliability of the energy storage power supply 100, and extending its service life.

[0037] Specifically, please participate Figure 1-5 The energy storage power supply 100 can be a household energy storage power supply. Those skilled in the art will understand that a household energy storage power supply is an energy storage device installed in a household scenario, usually with a battery as the core, and equipped with photovoltaic panels, inverters, controllers and other components. It can be charged when the power grid electricity price is low or use renewable energy such as solar energy to generate electricity and store it. During peak power consumption, power outages or high electricity prices, it releases electricity for use by household appliances. It has the functions of peak load shifting, improving power consumption autonomy, reducing electricity costs, providing power supply to the grid to obtain profits, and providing backup power in emergencies. At the same time, it can realize the monitoring and regulation of power consumption, providing a safe, economical and flexible energy solution for household electricity use.

[0038] The housing 10 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any particular restrictions on this. A housing space is formed within the housing 10, and the battery module 20, fire protection module 30, and control module 40 are disposed within the housing space of the housing 10. The battery module 20 may include one or more, and the number of battery modules 20 may specifically be 1, 2, 3, 4, 6, or even more. The actual number of battery modules 20 in the energy storage power supply 100 can be set according to energy storage requirements, and the specific number is not limited. When the energy storage power supply 100 includes multiple battery modules 20, the battery modules 20 can be divided into a main package and a power-up package based on their functions. There can be one main package, and one or more power-up packages. The main package is the core unit of the energy storage power supply 100, containing the main energy storage unit, the battery management system (BMS) core controller, and the main electrical and thermal management interfaces. The main package can be communicatively connected to the power-up package via a communication bus and electrically connected to the power-up package via a power bus.

[0039] The control module 40 can be a standalone module within the energy storage power supply 100 specifically designed to reduce the risk of thermal runaway, or it can be a module already included in the energy storage power supply 100. In this embodiment, the control module 40 can be a battery management system within the energy storage power supply 100. The control module 40 can be electrically connected to the battery module 20 and can monitor the battery status information of the battery module 20 to determine whether the battery status information of the battery module 20 is abnormal. The battery status signal can be one or more of temperature, current, voltage, or power. While not limiting, it is understood that when thermal runaway occurs in the battery module 29, phenomena such as a sharp increase in temperature and a sudden drop in voltage and current will occur.

[0040] If the control module 40 detects an abnormality in the battery status information of the battery module 20, it can control the battery module 20 to reduce the charge and discharge power of the battery module 20 or disconnect the charge and discharge circuit of the battery module 20 based on the degree of abnormality in the battery status information. For example, if the battery status information includes temperature, if the temperature is greater than a first threshold temperature, the battery module 20 is controlled to reduce the charge and discharge power of the battery module 20. If the temperature continues to rise and exceeds a second threshold temperature, the charge and discharge circuit of the battery module 20 is disconnected, thereby stopping the battery module 20 from charging and discharging.

[0041] In addition, in some examples, when the control module 40 detects abnormal battery status information of the battery module 20, it generates a warning signal based on the battery status signal. The warning signal can be presented in the form of audio, text, pictures, or audio + text, etc. In this way, the user can be reminded in time to take countermeasures.

[0042] The fire extinguishing module 30 may store a fire extinguishing agent, which may be an inert gas such as perfluorohexanone (FK-5-1-12 or C6F12O). The fire extinguishing agent can be used to prevent thermal runaway of the battery module 20 by means of isolation, asphyxiation, cooling, chemical inhibition, and the like. Specifically, the fire extinguishing agent can achieve a cooling effect of endothermic decomposition and a chemical inhibition effect in the gas phase and solid phase. Among them, the cooling effect of endothermic decomposition mainly relies on the endothermic decomposition of metal oxides and carbonates. Under the action of heat, the gasified metal ions such as Sr, K, Mg or cations that have lost electrons decomposed by the fire extinguishing agent exist in the form of steam, and undergo multiple chain reactions with the active groups H·, ·OH and O· in the combustion. The active groups in the combustion are consumed in large quantities, the concentration continues to decrease, and the combustion is suppressed. In the chemical inhibition effect of the solid phase, the solid particles in the fire extinguishing agent can adsorb the chain reaction intermediates ·OH, H· and O·, and catalyze them to recompose stable molecules, thereby interrupting the branch chain reaction of the combustion process.

[0043] The fire protection module 30 includes a passive trigger module 31 and an active trigger module 32. Among them, the passive trigger module 31 is used to realize the passive triggering of the fire protection module 30 and spray the fire extinguishing agent into the shell 10. The passive trigger module 31 can be set in a preset detection area in the shell 10. When the preset detection area meets the triggering conditions of the passive trigger module 31, the fire protection module 30 fills the shell 10 with fire extinguishing agent to prevent the battery module 20 from continuing to have thermal runaway. The triggering conditions may include but are not limited to one or more of temperature triggering, gas concentration triggering, smoke triggering, air pressure triggering, etc. It can be understood that when the triggering conditions include multiple types, that is, by combining multimodal data, it is possible to avoid false triggering of the thermal runaway protection of the fire protection module 30 and causing damage to the energy storage power supply 100. The preset detection area can be set according to the shape of the shell 10 and the layout of the battery module 20, and the specific location is not limited.

[0044] The active trigger module 32 is electrically connected to the control module 40. The active trigger module 32 is configured to receive a trigger signal from the control module 40 and control the fire fighting module 30 to fill the housing 10 with fire extinguishing agent, thereby enabling the control module 40 to actively trigger the fire fighting module 30. The trigger signal may be an electrical signal.

[0045] In certain embodiments, the housing 10 of the energy storage power supply 100 further includes a housing explosion-proof valve 50. This is a safety device within the energy storage power supply 100 for preventing sudden pressure increases within the housing 10. It also provides a certain degree of protection against accidental touch and external intrusion. The valve is configured to trigger and open to release pressure when the air pressure within the housing 10 reaches a preset threshold. The housing explosion-proof valve 50 can be located in an area not accessible to personnel, such as the bottom or side of the housing 10, to ensure both efficient pressure relief and personal safety.

[0046] In this way, by setting the shell explosion-proof valve 50, it is possible to prevent the shell 10 from being over-pressurized and causing explosion or rupture of the shell 10 due to thermal runaway of the battery module 10, further improving the safety performance of the energy storage power supply 100.

[0047] In certain embodiments, the control module 40 is further configured to send a trigger signal to the active trigger module 50 after reducing the charge / discharge power of the battery module 20 or disconnecting the charge / discharge circuit of the battery module 20, and if the duration of abnormal battery status information of the monitored battery module 20 reaches a threshold duration. In other words, if the abnormal battery status information persists or becomes more severe, a trigger signal is sent to the active trigger module 50 to cause the fire extinguishing module 30 to fill the housing 10 with fire extinguishing agent.

[0048] In this way, unnecessary fire-fighting operations caused by short-term abnormalities can be avoided, interference with the normal operation of the battery module 20 and loss of fire-extinguishing agent can be reduced, and when the abnormal state persists and the risk escalates, timely fire-fighting can be ensured by actively triggering the fire-fighting module 30, taking into account both the stability of system operation and the reliability of emergency protection.

[0049] In some embodiments, the passive trigger module 31 includes a flexible temperature detector. The flexible temperature detector can sense temperature changes. In other words, when the temperature in a preset detection area meets the triggering conditions of the flexible temperature detector, the firefighting module 30 fills the housing 10 with fire extinguishing agent. Furthermore, the flexible temperature detector can be bent and steered freely, is compact and practical, and can be flexibly positioned, making it adaptable to complex energy storage power supplies 100.

[0050] In this way, the flexible temperature detector can be cut or bent into specific shapes such as a "bow" shape, a ring shape, etc. according to monitoring requirements, flexibly covering multiple points or a large area, thereby realizing real-time tracking of local hot spots of the battery module 20 and completing dynamic mapping of the overall temperature field.

[0051] In some embodiments, the flexible temperature detector may be a thermal wire having a combustion temperature greater than 170 degrees Celsius. After the thermal wire burns, it may trigger the fire fighting module 30 to fill the housing 10 with a fire extinguishing agent.

[0052] Specifically, the preset detection area can be set on one side of the battery module 20. The thermal wires can be distributed in a "bow" shape and cover various areas on one side of the battery module 20, thereby realizing thermal runaway detection in various areas of the battery module 20. In addition, the thermal wires can form a detection circuit. When thermal runaway occurs in the battery module 20, the thermal wires burn and melt, causing the detection circuit to be disconnected. When the detection circuit is disconnected and the trigger condition is met, the fire protection module 30 fills the housing 10 with fire extinguishing agent.

[0053] In some embodiments, the passive trigger module 31 further includes at least one of a smoke sensor, a gas sensor, and an electrochemical sensor. The smoke sensor can detect aerosols produced by electrolyte decomposition at the initial stage of thermal runaway, while the gas sensor and electrochemical sensor monitor the concentrations of combustible gases such as H2 and CO, as well as electrolyte decomposition products.

[0054] In this way, by setting a variety of trigger conditions, that is, by combining multimodal data, the risk of damage to the energy storage power supply 100 due to erroneous triggering of the thermal runaway protection of the fire protection module 30 is reduced.

[0055] In some embodiments, the trigger signal is generated by the control module 40 and the active trigger module 32 forming a closed loop.

[0056] In this way, by using the on-off state of the loop between the control module 40 and the active trigger module 32 as the trigger basis, the direct correlation between the trigger signal and the circuit connection state is ensured, thereby improving the reliability and accuracy of signal generation; at the same time, with the help of the closed loop, a clear physical state trigger signal, the trigger logic is simplified and the additional control links are reduced.

[0057] In some embodiments, the trigger signal is generated when the control module 40 is disconnected from the active trigger module 32 .

[0058] In this embodiment, under normal circumstances, the control module 40 can form a closed loop with the active trigger module 32. When the control module 40 detects that the battery status information is abnormal and cannot be restored to normal or continues to deteriorate, it can actively cut off the loop with the active trigger module 32. The active trigger module 32 is deemed to have received the trigger signal and controls the fire fighting module 30 to fill the shell 10 with fire extinguishing agent.

[0059] In this way, the active trigger module 32 uses the change in connection status as the trigger logic, which simplifies the trigger signal generation mechanism and does not require additional active trigger operations. In addition, it can avoid the control module 40 being damaged due to thermal runaway and unable to provide a trigger signal to the active trigger module 32, thereby improving the effect of active triggering.

[0060] In some embodiments, the control module 40 communicates with the cloud platform. The control module 40 is further configured to receive a passive trigger signal from the active trigger module 32 and send the passive trigger signal to the cloud platform.

[0061] Specifically, the passive trigger signal can be generated when the circuit state between the control module and the active trigger module switches, and the circuit state switching between the control module and the active trigger module can be implemented by the passive trigger module. For example, when the passive trigger module includes a thermal line, it can trigger the circuit between the control module and the active trigger module to change from a connected state to a disconnected state, or from a disconnected state to a connected state, thereby triggering the generation of the passive trigger signal, so that the control module knows that the fire module has been passively triggered and fills the shell with fire extinguishing agent. Furthermore, the control module can send the passive trigger signal to the cloud platform, so that the cloud platform can inform the user or the fire alarm platform.

[0062] In some embodiments, the energy storage power supply 100 further includes a cell explosion-proof valve 51 , which is integrated into the battery module 20 and is located on a side where the electrode terminals are provided.

[0063] Specifically, the battery module 20 may integrate multiple battery cells 21. A battery cell 21 is the smallest unit of a battery. Each battery cell 21 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cells 21 may be cylindrical, flat, rectangular, or other shapes.

[0064] The multiple battery cells 21 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the multiple battery cells 21. The multiple battery cells 21 can be directly connected in series, in parallel, or in a hybrid configuration, and then the entire assembly of the multiple battery cells 21 is housed within the housing 10. Alternatively, the battery module 20 can be constructed by first connecting the multiple battery cells 21 in series, in parallel, or in a hybrid configuration, and then housed within the housing 10. The battery module 20 can also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 21.

[0065] See also Figure 5 , each battery cell 21 may include a accommodating cavity 211, an end cover 212, an electrode assembly 213, an electrode terminal 214 and other functional components. Among them, the accommodating cavity 211 is a component that isolates the internal environment of the battery cell 21 from the external environment. The end cover 212 is a component that is enclosed in the accommodating cavity 211 to isolate the internal environment of the battery cell 21 from the external environment. The end cover 212 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cover 212 is not easily deformed when squeezed or collided, so that the battery cell 21 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 214 can be provided on the end cover 212. The electrode terminal 214 is electrically connected to the electrode assembly 213 for outputting or inputting electrical energy of the battery cell 21.

[0066] There may be multiple battery cell explosion-proof valves 51, each of which may be arranged on the end cover 212, and is used to release the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold value. The battery cell explosion-proof valve 51 may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery cell 21 reaches a predetermined threshold value, the battery cell explosion-proof valve 51 executes an action or the weak structure provided in the battery cell explosion-proof valve 51 is destroyed, thereby forming a discharge channel for the internal pressure of the battery cell 21 to be released.

[0067] In this way, when a battery cell 21 inside the battery module 20 generates high-pressure gas due to thermal runaway, the cell explosion-proof valve 51 integrated on the electrode terminal 214 side can quickly relieve pressure nearby, shorten the gas release path, improve the pressure relief efficiency, and avoid high pressure impact damage to the electrode terminal 214 and the circuit connection; at the same time, the electrode terminal 214 side is a key area for electrical connection of the battery module 20. The setting of the cell explosion-proof valve 51 here can give priority to protecting the safety of the electrical connection and prevent electrode short circuit or poor contact due to sudden pressure rise; and the shell explosion-proof valve 50 and the cell explosion-proof valve 51 form a module-level + shell-level dual pressure relief system. The cell explosion-proof valve 51 gives priority to dealing with the initial pressure of the single cell thermal runaway, and the shell explosion-proof valve 50 responds to the overall pressure surge caused by the chain runaway of multiple modules. The synergistic effect of the two can effectively block the expansion of thermal runaway and protect the structural integrity of the shell 10.

[0068] In some embodiments, the preset detection area is located on a side of the battery module 20 where the electrode terminal 214 is provided.

[0069] In this way, by setting the preset detection area on the battery module 20 and on the same side as the electrode terminal 214, since the electrode terminal 214 is the key interface for the battery's electrochemical reaction, thermal runaway is easily caused by poor contact, overcurrent heating, etc. in the vicinity. The preset detection area is arranged nearby to capture subtle abnormalities such as temperature and voltage of the electrode terminal 214 and surrounding battery cells in real time, thereby improving the triggering accuracy of the passive detection module 20.

[0070] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An energy storage power supply, characterized in that: The energy storage power supply includes a housing, a battery module, a fire protection module and a control module, wherein the battery module, the fire protection module and the control module are arranged in the housing; The control module is electrically connected to the battery module and configured to monitor battery status information of the battery module. When the battery status information of the battery module is abnormal, the control module controls the battery module to reduce the charge and discharge power of the battery module or cut off the charge and discharge circuit of the battery module based on the battery status information. The fire-fighting module includes a passive triggering module and an active triggering module. The passive triggering module is placed in a preset detection area in the shell. When the preset detection area meets the triggering condition of the passive triggering module, the fire-fighting module fills the shell with fire extinguishing agent; the active triggering module is electrically connected to the control module, and the active triggering module is used to receive the triggering signal of the control module and control the fire-fighting module to fill the shell with the fire extinguishing agent.

2. The energy storage power supply according to claim 1, characterized in that: The shell of the energy storage power supply further includes a shell explosion-proof valve, which is configured to be triggered to open and release pressure when the air pressure in the shell reaches a preset threshold.

3. The energy storage power supply according to claim 1, characterized in that: The control module is further configured to: after reducing the charge and discharge power of the battery module or cutting off the charge and discharge circuit of the battery module, and when it is monitored that the duration of abnormality in the battery status information of the battery module reaches a threshold duration, send the trigger signal to the active trigger module.

4. The energy storage power supply according to claim 1, characterized in that: The passive trigger module includes a flexible temperature detector.

5. The energy storage power supply according to claim 4, characterized in that: The flexible temperature detector includes a heat-sensitive wire.

6. The energy storage power supply according to claim 4 or 5, characterized in that: The passive trigger module further includes at least one of a smoke sensor, a gas sensor, and an electrochemical sensor.

7. The energy storage power supply according to claim 1, characterized in that: The trigger signal is generated when the control module is disconnected from the active trigger module; or The trigger signal is generated when the control module and the active trigger module form a closed loop.

8. The energy storage power supply according to claim 1, characterized in that: The control module communicates with the cloud platform, and is further configured to receive a passive trigger signal from the active trigger module and send the passive trigger signal to the cloud platform.

9. The energy storage power supply according to claim 1, characterized in that: The preset detection area is located on a side of the battery module where the electrode terminals are provided.

10. The energy storage power supply according to claim 1, characterized in that: The energy storage power supply further includes a battery cell explosion-proof valve, which is integrated on the battery module and located on a side where the electrode terminals are provided.

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