WO2024066000A1 - Fire suppression system for improving reliability of lithium ion storage batteries - Google Patents

Abstract

A fire suppression system for improving the reliability of lithium ion storage batteries, comprising a centralized control device (1), a composite smoke and temperature sensor (2), and a fire extinguishing device (3). The composite smoke and temperature sensor (2) can monitor the internal environment of a storage battery box body so as to obtain an environment data signal, wherein the environment data signal can represent information such as the carbon monoxide concentration, smoke concentration and temperature, and send the environment data signal to the centralized control device (1); the centralized control device (1) can process the environment data signal to determine, on the basis of the environment data signal, whether a thermal runaway situation has occurred, acquire a control signal if a thermal runaway situation has occurred, and start the fire extinguishing device (3) by means of the control signal so as to suppress the thermal runaway and achieve the effect of preventing fire, thus effectively lowering the operation and maintenance risk of vehicles, improving the safety and reliability of lithium ion storage batteries of high-speed motor train units, and avoiding vehicle loss and casualties resulting from fire caused by lithium ion storage batteries.

Description

A fire suppression system for improving the reliability of lithium-ion batteries

This application claims priority to a Chinese patent application filed with the Chinese Patent Office on September 29, 2022, with application number 202211202149.9 and invention name “A fire suppression system for improving the reliability of lithium-ion batteries”, the entire contents of which are incorporated by reference into this application.

This application claims priority to a Chinese patent application filed with the Chinese Patent Office on September 29, 2022, with application number 202222598069.1 and invention name “A fire suppression system for improving the reliability of lithium-ion batteries”, the entire contents of which are incorporated by reference into this application.

Technical Field

The present invention relates to the field of lithium ion batteries, and more particularly to a fire suppression system for improving the reliability of lithium ion batteries.

Background technique

With the continuous development of science and technology, lithium-ion batteries have entered a large-scale application stage as a new type of energy storage component. Because lithium-ion batteries have great advantages in environmental protection, technology and use, the reasonable application of lithium-ion batteries in high-speed EMUs can effectively alleviate the problem of energy shortage, reduce environmental pollution and achieve lightweight design of vehicles.

However, the use of lithium-ion batteries has certain risks. Not only can the thermal stability and aging of the lithium-ion battery's own materials lead to thermal runaway, but improper use of lithium-ion batteries due to accidents or management system failures can also lead to thermal runaway, causing fires and posing a huge safety hazard. Therefore, adopting necessary prevention and control measures for lithium-ion batteries is of great significance to maintaining the safety of vehicles and personnel.

Summary of the invention

In view of this, in order to solve the above problems, the present invention provides a fire suppression system for improving the reliability of lithium-ion batteries, and the technical solution is as follows:

A fire suppression system for improving the reliability of a lithium-ion battery, the fire suppression system comprising:

Centralized control device, composite smoke temperature sensor and fire extinguishing device;

The composite smoke temperature sensor and the fire extinguishing device are respectively connected to the centralized control device;

The composite smoke temperature sensor is used to obtain the environmental data signal of the area where the battery is located and send the environmental data signal to the centralized control device;

The centralized control device is used to receive the environmental data signal and process the environmental data signal to obtain a control signal. The centralized control device is also used to control the working state of the fire extinguishing device based on the control signal.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the fire suppression system further comprises: a DC/DC power supply module;

The DC/DC power supply module is connected to the centralized control device;

The DC/DC power supply module is used to provide working power to the centralized control device.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the centralized control device comprises: a self-contained power supply;

The self-contained power supply is used to provide working power to the centralized control device when the DC/DC power supply module works abnormally.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the fire suppression system further comprises: a temperature-sensitive magnetic power generation device;

The temperature-sensitive magnetic power generation device is connected to the centralized control device and the fire extinguishing device respectively;

The temperature-sensitive magnetic power generation device is used to obtain a temperature signal of the area where the battery is located, generate electricity based on the temperature signal, and control the working state of the fire extinguishing device;

The temperature-sensitive magnetic power generation device is also used to provide working power to the fire extinguishing device when both the DC/DC power supply module and the self-contained power supply are working abnormally, and feed back a startup status signal to the centralized control device.

Preferably, in the fire suppression system for improving the reliability of lithium-ion batteries, the composite smoke temperature sensor is also connected to the fire extinguishing device, and the composite smoke temperature sensor includes: an MCU module;

The MCU module is used to control the working state of the fire extinguishing device according to the environmental data signal.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the fire suppression system further comprises: a battery management system;

The battery management system is connected to the centralized control device;

The battery management system is used to control the working state of the centralized control device; the centralized control device can automatically take over the control when the battery management system is abnormal;

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the fire extinguishing device is a pressure storage device or a non-pressure storage device.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the fire extinguishing device comprises: a fire suppressant;

The fire extinguishing inhibitor comprises perfluorohexanone fire extinguishing inhibitor.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the fire suppression system further comprises: an electric control box;

The centralized control device is arranged inside the box of the battery or inside the box of the electric control box;

The DC/DC power supply module is arranged inside the box body of the electric control box.

Preferably, in the above-mentioned fire suppression system for improving the reliability of lithium-ion batteries, the battery comprises: a battery pack or a battery module;

The composite smoke temperature sensor and the temperature-sensitive magnetic power generation device are respectively arranged inside the battery pack or inside the battery module;

The fire extinguishing device is arranged in or outside the area where the battery pack or the battery module is located.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention provides a fire suppression system for improving the reliability of lithium-ion batteries, the fire suppression system comprising: a centralized control device, a composite smoke temperature sensor and a fire extinguishing device; the composite smoke temperature sensor and the fire extinguishing device are respectively connected to the centralized control device; the composite smoke temperature sensor is used to obtain an environmental data signal of an area where the battery is located and send the environmental data signal to the centralized control device; the centralized control device is used to receive the environmental data signal and process the environmental data signal to obtain a control signal, and the centralized control device controls the working state of the fire extinguishing device based on the control signal. The present invention can monitor the environment inside the battery box through the composite smoke temperature sensor to obtain an environmental data signal, and the environmental data signal can represent information such as carbon monoxide concentration, smoke concentration, temperature, etc.; the environmental data signal is sent to a centralized control device, and the centralized control device can process the environmental data signal, and determine whether there is thermal runaway based on the environmental data signal. If there is thermal runaway, a control signal is obtained, and the fire extinguishing device is activated by the control signal, thereby suppressing thermal runaway and achieving the effect of preventing fire, effectively reducing vehicle operation and maintenance risks, improving the safety and reliability of high-speed EMU lithium-ion batteries, and avoiding fires caused by lithium-ion batteries, thereby avoiding vehicle losses and casualties.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

FIG1 is a schematic structural diagram of a fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention;

FIG2 is a multi-view schematic diagram of a centralized control device provided by an embodiment of the present invention;

FIG3 is a multi-view schematic diagram of a composite smoke temperature sensor provided by an embodiment of the present invention;

FIG4 is a multi-view schematic diagram of a fire extinguishing device provided by an embodiment of the present invention;

FIG5 is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention;

FIG6 is a schematic diagram of a circuit for determining power supply of a DC/DC power supply module provided by an embodiment of the present invention;

FIG7 is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention;

FIG8 is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention;

FIG9 is a multi-view schematic diagram of a temperature-sensitive magnetic power generation device provided by an embodiment of the present invention;

FIG10 is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided in an embodiment of the present invention.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

An embodiment of the present invention provides a fire suppression system for improving the reliability of lithium-ion batteries. Referring to FIG1 , FIG1 is a structural schematic diagram of a fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention. In conjunction with FIG1 , the fire suppression system includes:

Centralized control device 1, composite smoke temperature sensor 2 and fire extinguishing device 3.

Specifically, in an embodiment of the present invention, as shown in Figure 2, Figure 2 is a multi-perspective schematic diagram of a centralized control device 1 provided in an embodiment of the present invention, Figure 2d is a schematic diagram of the centralized control device 1, Figure 2a is a front view of the centralized control device 1 projected in direction C, Figure 2b is a side view of the centralized control device 1 projected in direction B, and Figure 2c is a top view of the centralized control device 1 projected in direction A.

As shown in Figure 3, Figure 3 is a multi-perspective schematic diagram of a composite smoke temperature sensor 2 provided in an embodiment of the present invention, Figure 3 h is a schematic diagram of the composite smoke temperature sensor 2, Figure 3 e is a front view of the composite smoke temperature sensor 2 projected in direction C, Figure 3 f is a side view of the composite smoke temperature sensor 2 projected in direction B, and Figure 3 g is a top view of the composite smoke temperature sensor 2 projected in direction A.

As shown in Figure 4, Figure 4 is a multi-perspective schematic diagram of a fire extinguishing device 3 provided in an embodiment of the present invention, p in Figure 4 is a schematic diagram of the fire extinguishing device 3, q in Figure 4 is a side view of the fire extinguishing device 3 projected in direction D, and the direction D is opposite to the direction C, and n in Figure 4 is a top view of the fire extinguishing device 3 projected in direction A.

The composite smoke temperature sensor 2 and the fire extinguishing device 3 are respectively connected to the centralized control device 1 .

The composite smoke temperature sensor 2 is used to obtain an environmental data signal of the area where the battery is located and send the environmental data signal to the centralized control device 1 .

Specifically, in an embodiment of the present invention, the composite smoke temperature sensor 2 can monitor the environmental conditions in the area where the battery is located, and can obtain the environmental data signal by monitoring information such as carbon monoxide concentration, smoke concentration, temperature and battery leakage gas concentration in the area where the battery is located, and send the environmental data signal to the centralized control device 1.

The centralized control device 1 is used to receive the environmental data signal and process the environmental data signal to obtain a control signal. The centralized control device 1 is also used to control the working state of the fire extinguishing device 3 based on the control signal.

Specifically, in an embodiment of the present invention, after the centralized control device 1 obtains the environmental data signal, it analyzes and processes the environmental data signal to determine whether the numerical parameters of the environmental data signal have reached the conditions of thermal runaway, thereby obtaining different control signals; if it is determined that the numerical parameters of the environmental data signal have reached the conditions of thermal runaway, the fire extinguishing device 3 can be controlled to be in a working state through the obtained control signal; if it is determined that the numerical parameters of the environmental data signal have not reached the conditions of thermal runaway, the fire extinguishing device 3 can be controlled to be in a non-working state through the obtained control signal.

The present invention provides a fire suppression system for improving the reliability of lithium-ion batteries, the fire suppression system comprising: a centralized control device 1, a composite smoke temperature sensor 2 and a fire extinguishing device 3; the composite smoke temperature sensor 2 and the fire extinguishing device 3 are respectively connected to the centralized control device 1; the composite smoke temperature sensor 2 is used to obtain an environmental data signal of an area where the battery is located and send the environmental data signal to the centralized control device 1; the centralized control device 1 is used to receive the environmental data signal and process the environmental data signal to obtain a control signal, and the centralized control device 1 controls the working state of the fire extinguishing device 3 based on the control signal. The present invention can monitor the environment inside the battery box through the composite smoke temperature sensor 2 to obtain an environmental data signal, and the environmental data signal can represent information such as carbon monoxide concentration, smoke concentration, temperature, etc.; the environmental data signal is sent to the centralized control device 1, and the centralized control device 1 can process the environmental data signal, and determine whether there is thermal runaway based on the environmental data signal. If there is thermal runaway, a control signal is obtained, and the fire extinguishing device 3 is activated by the control signal, thereby suppressing thermal runaway and achieving the effect of preventing fire, effectively reducing vehicle operation and maintenance risks, improving the safety and reliability of high-speed EMU lithium-ion batteries, and avoiding fires caused by lithium-ion batteries, thereby avoiding vehicle losses and casualties.

Optionally, in another embodiment of the present invention, the structure of the fire suppression system for improving the reliability of lithium-ion batteries is further introduced. Referring to FIG5 , FIG5 is a schematic diagram of the structure of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention. In conjunction with FIG5 , the fire suppression system further includes:

A DC/DC power supply module 4 , wherein the DC/DC power supply module 4 is connected to the centralized control device 1 .

The DC/DC power supply module 4 is used to provide working power to the centralized control device 1 .

Specifically, in an embodiment of the present invention, referring to Figure 6, Figure 6 is a circuit diagram of a DC/DC power supply module 4 provided in an embodiment of the present invention for determining power supply. As shown in Figure 6, the high-speed EMU provides three power supply modes: an on-board charger 9, a battery 10, and a ground charger 11. The DC/DC power supply module can determine power supply according to the on-board charger 9 or the battery 10 or the ground charger 11 provided by the high-speed EMU.

Optionally, in another embodiment of the present invention, the structure of the centralized control device 1 in the fire suppression system for improving the reliability of lithium-ion batteries is further introduced, with reference to FIG7 , which is a structural schematic diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention. In conjunction with FIG7 , the centralized control device 1 includes:

Self-contained power supply 5; the self-contained power supply 5 is used to provide working power to the centralized control device 1 when the DC/DC power supply module 4 works abnormally.

Specifically, in an embodiment of the present invention, the self-contained power supply 5 is composed of a charging management unit and a battery unit, and the battery unit can be a lithium battery or a lead-acid battery; the self-contained power supply 5 can store electrical energy inside the self-contained power supply 5 when the DC/DC power supply module 4 is working normally, and when the DC/DC power supply module 4 is working abnormally, the electrical energy stored in the self-contained power supply 5 is used to provide working power to the centralized control device 1.

Optionally, in another embodiment of the present invention, the structure of the fire suppression system for improving the reliability of lithium-ion batteries is further introduced, with reference to FIG8 , which is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention. In conjunction with FIG8 , the fire suppression system further includes:

A temperature-sensitive magnetic power generation device 6; the temperature-sensitive magnetic power generation device 6 is connected to the centralized control device 1 and the fire extinguishing device 3 respectively;

Specifically, in an embodiment of the present invention, as shown in Figure 9, Figure 9 is a multi-perspective schematic diagram of a temperature-sensitive magnetic power generation device 6 provided in an embodiment of the present invention, m in Figure 9 is a schematic diagram of the temperature-sensitive magnetic power generation device 6, i in Figure 9 is a front view of the temperature-sensitive magnetic power generation device 6 projected in direction C, j in Figure 9 is a side view of the temperature-sensitive magnetic power generation device 6 projected in direction B, and k in Figure 9 is a top view of the temperature-sensitive magnetic power generation device 6 projected in direction A.

The temperature-sensitive magnetic power generation device 6 is used to obtain the temperature signal of the area where the battery is located, generate electricity based on the temperature signal, and control the working state of the fire extinguishing device 3;

Specifically, in an embodiment of the present invention, the temperature-sensitive magnetic power generation device 6 can detect the temperature of the area where the battery is located to obtain a temperature signal, and a temperature threshold is also set; if the temperature signal exceeds the set temperature threshold, the temperature-sensitive self-generating device 6 generates electricity by releasing the magnetic core to cut the magnetic flux lines, thereby controlling the start of the fire extinguishing device 3, so that the fire extinguishing device 3 is in a working state; the temperature-sensitive magnetic power generation device 6 includes but is not limited to the use of fusible metals, temperature-sensitive memory alloys and temperature-sensitive glass bulb components to trigger the fire extinguishing device 3 to be in a working state.

The temperature-sensitive magnetic power generation device 6 is also used to provide working power to the fire extinguishing device when both the DC/DC power module 4 and the self-contained power supply 5 are working abnormally.

Specifically, in an embodiment of the present invention, when both the DC/DC power supply module 4 and the self-contained power supply 5 are malfunctioning, the temperature sensing power generation device 6 can also be used to provide working power to the fire extinguishing device and feed back a startup status signal to the centralized control device.

Optionally, in another embodiment of the present invention, the structure of the fire suppression system for improving the reliability of lithium-ion batteries is further introduced, with reference to FIG10 , which is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention. In conjunction with FIG10 , the fire suppression system further includes:

Battery management system 7; the battery management system 7 is connected to the centralized control device 1; the battery management system 7 is used to control the working state of the centralized control device 1.

Specifically, in an embodiment of the present invention, the battery management system 7 is capable of monitoring the status parameters of the centralized control device 1, and the status parameters can represent information such as voltage, current, and temperature; the battery management system 7 analyzes and processes the status parameters to obtain a control signal to control the working state of the centralized control device 1, thereby achieving effective management and control of the centralized control device 1 and ensuring safe and reliable operation of the centralized control device 1; in addition, if the battery management system 7 fails or shuts down, the centralized control device 1 can detect the status parameters of the centralized control device by itself, and analyze and process the status parameters to obtain a control signal to control the working state of the centralized control device 1, thereby achieving self-monitoring of the centralized control device 1.

Optionally, in another embodiment of the present invention, the structure of the composite smoke temperature sensor 2 in the fire suppression system for improving the reliability of lithium-ion batteries is further introduced. Referring to FIG. 11 , FIG. 11 is a schematic structural diagram of another fire suppression system for improving the reliability of lithium-ion batteries provided by an embodiment of the present invention. In conjunction with FIG. 11 , the structure of the composite smoke temperature sensor 2 is introduced in detail:

The composite smoke temperature sensor 2 is also connected to the fire extinguishing device 3 ; the composite smoke temperature sensor 2 includes: an MCU module 8 .

The MCU module 8 is used to control the working state of the fire extinguishing device 3 according to the environmental data signal.

Specifically, in an embodiment of the present invention, if the centralized control device 1 works abnormally, the composite smoke temperature sensor 2 sends the environmental signal to the MCU module 8. After the MCU module 8 obtains the environmental data signal, it analyzes and processes the environmental data signal to determine whether the numerical parameters of the environmental data signal meet the conditions of thermal runaway, thereby obtaining different control signals; if it is determined that the numerical parameters of the environmental data signal meet the conditions of thermal runaway, the fire extinguishing device 3 can be controlled to be in a working state through the obtained control signal; if it is determined that the numerical parameters of the environmental data signal do not meet the conditions of thermal runaway, the fire extinguishing device 3 can be controlled to be in a non-working state through the obtained control signal; therefore, the composite smoke temperature sensor 2 can autonomously determine the occurrence of thermal runaway when the centralized control device 1 works abnormally, thereby controlling the working state of the fire extinguishing device 3, and adopting double protection measures to prevent the occurrence of fire.

Optionally, in another embodiment of the present invention, the structure of the fire extinguishing device 3 in the fire suppression system for improving the reliability of the lithium-ion battery is further introduced, and the structure of the fire extinguishing device 3 is introduced in detail as follows:

The fire extinguishing device 3 is a pressure storage device or a non-pressure storage device; the fire extinguishing device 3 includes: a fire extinguishing inhibitor; the fire extinguishing inhibitor is a perfluorohexanone fire extinguishing inhibitor.

Specifically, in the embodiment of the present invention, the fire extinguishing inhibitor includes but is not limited to perfluorohexanone fire extinguishing inhibitor. In the embodiment of the present invention, perfluorohexanone fire extinguishing inhibitor is used as the optimal embodiment for explanation. The perfluorohexanone fire extinguishing inhibitor can inhibit the combustion reaction by both physical and chemical methods, thereby achieving timely and effective suppression of the occurrence of fire.

Optionally, in another embodiment of the present invention, the structure of the fire suppression system for improving the reliability of lithium-ion batteries is further introduced, and the details are as follows:

The fire suppression system further comprises: an electric control box.

The centralized control device 1 is arranged inside the battery box or inside the electric control box; the DC/DC power supply module 4 is arranged inside the electric control box.

The battery includes: a battery pack or a battery module.

The composite smoke temperature sensor 2 and the temperature-sensitive magnetic power generation device 6 are respectively arranged inside the battery pack or inside the battery module; the fire extinguishing device 3 is arranged in or outside the area where the battery pack or the battery module is located.

Specifically, in an embodiment of the present invention, the composite smoke temperature sensor 2 and the temperature-sensitive magnetic power generation device 6 can be simultaneously arranged inside the battery pack or inside the battery module; the composite smoke temperature sensor 2 can be arranged inside the battery pack and the temperature-sensitive magnetic power generation device 6 can be arranged inside the battery module, or the composite smoke temperature sensor 2 can be arranged inside the battery module and the temperature-sensitive magnetic power generation device 6 can be arranged inside the battery pack; the fire extinguishing device 3 can be arranged inside the battery pack or the battery module, or can be arranged outside the battery pack or the battery module.

The fire suppression system for improving the reliability of lithium-ion batteries provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A fire suppression system for improving the reliability of a lithium-ion battery, characterized in that the fire suppression system comprises:

   Centralized control device, composite smoke temperature sensor and fire extinguishing device;

   The composite smoke temperature sensor and the fire extinguishing device are respectively connected to the centralized control device;

   The composite smoke temperature sensor is used to obtain the environmental data signal of the area where the battery is located and send the environmental data signal to the centralized control device;

   The centralized control device is used to receive the environmental data signal and process the environmental data signal to obtain a control signal. The centralized control device is also used to control the working state of the fire extinguishing device based on the control signal.
2. The fire suppression system according to claim 1, characterized in that the fire suppression system further comprises: a DC/DC power supply module;

   The DC/DC power supply module is connected to the centralized control device;

   The DC/DC power supply module is used to provide working power to the centralized control device.
3. The fire suppression system according to claim 2, characterized in that the centralized control device comprises: a self-contained power supply;

   The self-contained power supply is used to provide working power to the centralized control device when the DC/DC power supply module works abnormally.
4. The fire suppression system according to claim 3, characterized in that the fire suppression system further comprises: a temperature-sensitive magnetic power generation device;

   The temperature-sensitive magnetic power generation device is connected to the centralized control device and the fire extinguishing device respectively;

   The temperature-sensitive magnetic power generation device is used to obtain a temperature signal of the area where the battery is located, generate electricity based on the temperature signal, and control the working state of the fire extinguishing device;

   The temperature-sensitive magnetic power generation device is also used to provide working power to the fire extinguishing device when both the DC/DC power supply module and the self-contained power supply are working abnormally.
5. The fire suppression system according to claim 1, characterized in that the composite smoke temperature sensor is also connected to the fire extinguishing device, and the composite smoke temperature sensor comprises: an MCU module;

   The MCU module is used to control the working state of the fire extinguishing device according to the environmental data signal.
6. The fire suppression system according to claim 1, characterized in that the fire suppression system further comprises: a battery management system;

   The battery management system is connected to the centralized control device;

   The battery management system is used to control the working state of the centralized control device.
7. The fire suppression system according to claim 1, characterized in that the fire extinguishing device is a pressure storage device or a non-pressure storage device.
8. The fire suppression system of claim 1, wherein the fire extinguishing device comprises: a fire suppressant;

   The fire extinguishing inhibitor comprises perfluorohexanone fire extinguishing inhibitor.
9. The fire suppression system according to claim 2, characterized in that the fire suppression system further comprises: an electric control box;

   The centralized control device is arranged inside the box of the battery or inside the box of the electric control box;

   The DC/DC power supply module is arranged inside the box body of the electric control box.
10. The fire suppression system according to claim 4, characterized in that the battery comprises: a battery pack or a battery module;

    The composite smoke temperature sensor and the temperature-sensitive magnetic power generation device are respectively arranged inside the battery pack or inside the battery module;

    The fire extinguishing device is arranged in or outside the area where the battery pack or the battery module is located.

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