Thermal runaway management system and battery pack

Abstract

The embodiment of the utility model discloses a thermal runaway management system and a battery pack. The thermal runaway management system comprises a battery monitoring circuit, a fire-fighting assembly and a gas collection assembly, the battery monitoring circuit and the fire-fighting assembly are both arranged in the battery pack, the battery monitoring circuit is electrically connected with a battery cell in the battery pack, the fire-fighting assembly and the fire-fighting assembly are connected with the battery monitoring circuit, and the battery monitoring circuit can be configured to monitor the temperature of the battery cell. And after the thermal runaway of the battery cell is monitored, the fire-fighting assembly is controlled to execute fire extinguishing in the battery pack and the body collecting assembly is controlled to collect gas in the battery pack, so that the thermal runaway of the battery cell is monitored, thermal runaway diffusion in the battery pack can be controlled in time, waste gas generated by thermal runaway is treated in time, and the safety of the battery cell is improved. And the safety and the reliability of the battery pack are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a thermal runaway management system and a battery pack. Background Art

[0002] Thermal runaway refers to the phenomenon that under certain conditions (such as high temperature, overcharging, internal short circuit, etc.), the chemical reaction inside the battery gets out of control, generating a large amount of heat and potentially causing a fire or explosion. Specifically, a short circuit occurs inside the battery, causing the electrolyte to burn or explode, or the positive electrode material decomposes at high temperature to produce oxygen, further exacerbating heat accumulation, or the negative electrode material reacts violently with the electrolyte, causing the temperature to rise rapidly. In addition, excessive discharge of the battery will cause the internal pressure to decrease, all of which will cause thermal runaway. Therefore, how to effectively manage the thermal runaway of the battery is a technical problem that needs to be solved urgently. Utility Model Content

[0003] In response to the deficiencies in the prior art, the present application provides a thermal runaway management system and a battery pack, which can detect, control and process thermal runaway of the battery pack, and can effectively improve the safety and reliability of the battery pack.

[0004] To solve the above problems, in a first aspect, the present application provides a thermal runaway management system, which includes:

[0005] A battery monitoring circuit is provided inside the battery pack and is electrically connected to the cells in the battery pack;

[0006] A fire protection component is located inside the battery pack and is electrically connected to the battery monitoring circuit;

[0007] a gas collection assembly electrically connected to the battery monitoring circuit and in communication with the interior of the battery pack;

[0008] Among them, the battery monitoring circuit is at least configured to monitor the temperature of the battery cell, and control the fire fighting component to perform fire extinguishing inside the battery pack, and at the same time control the gas collection component to collect gas inside the battery pack.

[0009] Furthermore, in the thermal runaway management system provided in this application, the battery monitoring circuit includes:

[0010] Battery cell monitoring module, electrically connected to the battery cell;

[0011] a temperature monitoring circuit, electrically connected to the battery cell monitoring module and configured to monitor the temperature of the battery cell;

[0012] Among them, the battery cell monitoring module is configured to monitor the status of the battery, and control the fire fighting component to perform fire extinguishing inside the battery pack, while controlling the gas collection component to collect gas inside the battery pack.

[0013] Furthermore, in the thermal runaway management system provided in the present application, the battery cell monitoring module includes a slave control module of the battery management system to which the battery pack belongs.

[0014] Furthermore, in the thermal runaway management system provided in the present application, the temperature monitoring circuit includes a thermal switch;

[0015] One end of the thermal switch is electrically connected to one end of the battery cell, and the other end of the thermal switch is electrically connected to the battery cell monitoring module.

[0016] Furthermore, in the thermal runaway management system provided in the present application, the fire protection component includes a smoke detector and a fire extinguishing module;

[0017] Among them, the smoke detector and the fire extinguishing module are both electrically connected to the battery monitoring circuit. The smoke detector is configured to detect smoke inside the battery pack, and the fire extinguishing module is configured to perform fire extinguishing inside the battery pack.

[0018] Furthermore, in the thermal runaway management system provided in the present application, the fire protection component further includes a fire protection control module;

[0019] The fire control module is electrically connected to the battery monitoring circuit, the smoke detector and the fire extinguishing module respectively, and the fire control module is configured to control the fire extinguishing module to perform fire extinguishing inside the battery pack.

[0020] Furthermore, in the thermal runaway management system provided in the present application, the gas collection assembly includes a gas collection pipe, and the battery pack is provided with a vent valve;

[0021] Among them, the gas collection pipe is arranged outside the battery pack; one end of the gas collection pipe is connected to one end of the breathable valve, and the other end of the breathable valve is connected to the interior of the battery pack.

[0022] Furthermore, in the thermal runaway management system provided in the present application, the battery pack is further provided with a balancing valve, one end of the balancing valve is connected to the interior of the battery pack, and the other end of the balancing valve is connected to the outside of the battery pack.

[0023] Furthermore, in the thermal runaway management system provided in the present application, the gas collection assembly further includes an airflow assembly and a backup power supply;

[0024] Among them, the airflow component is electrically connected to the battery monitoring circuit and the backup power supply, and the airflow component is configured to discharge the gas inside the battery pack through the gas collection pipe and the vent valve in sequence.

[0025] In a second aspect, the present application also provides a battery pack, which includes the thermal runaway management system of the first aspect.

[0026] The thermal runaway management system provided in the present application includes a battery monitoring circuit, a fire protection component and a gas collection component. The battery monitoring circuit and the fire protection component are both arranged inside the battery pack. The battery monitoring circuit is electrically connected to the battery cells in the battery pack. The fire protection component is electrically connected to the battery monitoring circuit. The battery monitoring circuit can be configured to monitor the temperature of the battery cells, and after detecting thermal runaway of the battery cells, it can control the fire protection component to perform fire extinguishing inside the battery pack and control the gas collection component to collect gas inside the battery pack. This not only realizes the monitoring of thermal runaway of the battery cells, but also can timely control the spread of thermal runaway in the battery pack and timely treat the exhaust gas generated by thermal runaway, effectively improving the safety and reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A first schematic block diagram of a thermal runaway management system provided in an embodiment of the present application;

[0029] Figure 2 A second schematic block diagram of a thermal runaway management system provided in an embodiment of the present application;

[0030] Figure 3 A third schematic block diagram of the thermal runaway management system provided in an embodiment of the present application;

[0031] Figure 4 A fourth schematic block diagram of the thermal runaway management system provided in an embodiment of the present application;

[0032] Figure 5 This is a circuit diagram of the airflow component provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0035] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0037] In addition, in this application, unless otherwise clearly specified or limited in the embodiments, the terms "installed", "connected", "connected" and "fixed" appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection. It can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements, or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood based on the specific implementation.

[0038] See also Figure 1 , Figure 1 This is a first schematic block diagram of the thermal runaway management system provided in the embodiment of the present application. Figure 1 As shown, a thermal runaway management system 10 includes:

[0039] The battery monitoring circuit 100 is provided inside the battery pack and electrically connected to the battery cells 20 in the battery pack;

[0040] The fire protection component 200 is disposed inside the battery pack and electrically connected to the battery monitoring circuit 100;

[0041] The gas collection assembly 300 is electrically connected to the battery monitoring circuit 100 and communicates with the interior of the battery pack;

[0042] The battery monitoring circuit 100 is at least configured to monitor the temperature of the battery cell 20 and control the fire fighting component 200 to extinguish the fire inside the battery pack, while controlling the gas collecting component 300 to collect the gas inside the battery pack.

[0043] In this embodiment, the battery monitoring circuit 100 can monitor the temperature, voltage, and current of the battery cells 20 in the battery pack to ensure that the battery operates within a safe range. The firefighting component 200 can directly extinguish the fire inside the battery pack when the battery cell 20 is in thermal runaway, thereby quickly extinguishing the fire of the battery cell 20 in the thermal runaway state and effectively preventing the battery pack from reigniting, thereby reducing the risk of secondary damage caused by the battery pack. The gas collection component 300 can collect the exhaust gas generated by the battery cell 20 and discharge it in a targeted manner, thereby preventing the exhaust gas from being directly discharged into the air, thereby reducing harm to the environment and human body.

[0044] The thermal runaway management system 10 provided in the present application includes a battery monitoring circuit 100, a fire protection component 200 and a gas collection component 300. The battery monitoring circuit 100 and the fire protection component 200 are both arranged inside the battery pack. The battery monitoring circuit 100 is electrically connected to the battery cell 20 in the battery pack, and the fire protection component 200 is electrically connected to the battery monitoring circuit 100. The battery monitoring circuit 100 can be configured to monitor the temperature of the battery cell 20, and after detecting thermal runaway of the battery cell 20, it can control the fire protection component 200 to perform fire extinguishing inside the battery pack and control the gas collection component to collect gas inside the battery pack. This not only realizes the monitoring of thermal runaway of the battery cell 20, but also can timely control the spread of thermal runaway in the battery pack and timely treat the exhaust gas generated by thermal runaway, effectively improving the safety and reliability of the battery pack.

[0045] In some embodiments, as Figure 2 As shown, the battery monitoring circuit 100 includes:

[0046] The battery cell monitoring module 101 is electrically connected to the battery cell 20;

[0047] The temperature monitoring circuit 102 is electrically connected to the battery cell monitoring module 101 and is configured to monitor the temperature of the battery cell 20;

[0048] The battery cell monitoring module 101 is configured to monitor the status of the battery, and control the fire fighting component 200 to extinguish the fire inside the battery pack, while controlling the gas collecting component 300 to collect the gas inside the battery pack.

[0049] Specifically, the cell monitoring module 101 can monitor the temperature, voltage, and current of the battery cells 20 in the battery pack to ensure that the battery operates within a safe range. The temperature monitoring circuit 102 can monitor the temperature of each battery cell 20 in the battery pack. In addition, the cell monitoring module 101 can obtain the temperature of the battery cell 20 monitored by the temperature monitoring circuit 102 from the temperature monitoring circuit 102, and can further determine whether the battery cell 20 has experienced thermal runaway, thereby avoiding misjudgment of thermal runaway of the battery cell 20 and improving the accuracy of thermal runaway monitoring of the battery cell 20.

[0050] In this embodiment, by simultaneously providing the cell monitoring module 101 and the temperature monitoring module within the battery pack, it is possible to avoid misjudgments of thermal runaway of the cell 20 and improve the accuracy of thermal runaway monitoring of the cell 20. Furthermore, the cell monitoring module 101 can serve as a slave control module of the battery management system. As an important component of the battery management system, the slave module undertakes multiple key tasks, including data acquisition, balancing management, communication, and thermal management, and is a key link in ensuring efficient and safe battery operation.

[0051] In some embodiments, the temperature monitoring circuit 102 includes a thermal switch; wherein one end of the thermal switch is electrically connected to one end of the battery cell 20 , and the other end of the thermal switch is electrically connected to the battery cell monitoring module 101 .

[0052] Specifically, a thermal switch is an electromechanical temperature control device that utilizes the different thermal expansion coefficients of the various layers of a bimetallic strip. When the temperature changes, the deformation of the active layer is greater than that of the passive layer, causing the bimetallic strip to bend toward the passive layer. This change in the curvature of the composite material creates a deformation characteristic that switches the current on and off. Thermal switches can change their on / off state based on changes in ambient temperature. They are classified into two types: positive and negative temperature coefficients. They are primarily used in safety and control systems to monitor temperature and control related devices. Thermal switches can be implemented using a variety of technologies, including bimetallic switches, thermal reed switches, mercury switches, rod and tube switches with different temperature coefficients, and pneumatic switches.

[0053] When the temperature monitoring circuit 102 is used to monitor the temperature of the battery cells 20 in the battery pack, the present application can use a thermal switch to implement the monitoring. The thermal switch is low in cost and does not have the risk of communication anomalies, thereby reducing the misjudgment of thermal runaway of the battery cells 20 and improving the accuracy of thermal runaway monitoring of the battery cells 20. Each battery cell 20 in the battery pack is equipped with a thermal switch. When the battery cell 20 is operating normally, the thermal switch is in a closed state. When the battery cell 20 is in thermal runaway, the temperature rises and the thermal switch is disconnected. At this time, the battery cell monitoring module 101 cannot receive the current signal or voltage information at the thermal switch, and thus can determine that the battery cell 20 is in thermal runaway.

[0054] In some embodiments, as Figure 3 As shown, the fire protection component 200 includes a smoke detector 201 and a fire extinguishing module 202; wherein, the smoke detector 201 and the fire extinguishing module 202 are both electrically connected to the battery monitoring circuit 100, the smoke detector 201 is configured to detect smoke inside the battery pack, and the fire extinguishing module 202 is configured to perform fire extinguishing inside the battery pack.

[0055] Specifically, the smoke detector 201 is a device specifically used to monitor the internal environment of the battery pack to prevent dangerous situations such as fire and overheating. The battery pack smoke detector 201 generally uses a photoelectric or ionization sensor to detect smoke and exhaust particles.

[0056] In this embodiment, a smoke detector 201 can be provided for each battery cell 20 in the battery pack. When a battery cell 20 in the battery pack experiences thermal runaway, the corresponding smoke detector 201 can detect the smoke generated by the thermal runaway battery cell 20 to determine whether thermal runaway has occurred in the battery cell 20. This can further reduce misjudgments of thermal runaway in the battery cell 20 and improve the accuracy of thermal runaway monitoring in the battery cell 20. Furthermore, after determining that a battery cell 20 has experienced thermal runaway, the fire extinguishing module 202 can be used to extinguish the fire to prevent the thermal runaway of the battery cell 20 from spreading and affecting other battery cells 20 in the battery pack that have not yet experienced thermal runaway, effectively improving the safety and reliability of the battery pack.

[0057] Furthermore, in some embodiments, Figure 3 As shown, the fire protection component 200 also includes a fire protection control module 203; wherein the fire protection control module 203 is electrically connected to the battery monitoring circuit 100, the smoke detector 201 and the fire extinguishing module 202, and the fire protection control module 203 is configured to control the fire extinguishing module 202 to perform fire extinguishing inside the battery pack.

[0058] Specifically, the battery monitoring circuit 100 can obtain smoke information detected by the smoke detector 201 at the corresponding battery cell 20 through the fire control module 203, and then determine whether thermal runaway has occurred in the battery cell 20. Furthermore, after determining that the battery cell 20 has thermal runaway, the battery monitoring circuit 100 can control the fire extinguishing module 202 through the fire control module 203 to extinguish the fire, thereby preventing the thermal runaway of the battery cell 20 from spreading and affecting other battery cells 20 in the battery pack that have not experienced thermal runaway, effectively improving the safety and reliability of the battery pack.

[0059] In some embodiments, as Figure 4 As shown, the gas collection assembly 300 includes a gas collection pipe 301, and the battery pack is provided with a breathable valve 30; wherein, the gas collection pipe 301 is provided outside the battery pack; one end of the gas collection pipe 301 is connected to one end of the breathable valve 30, and the other end of the breathable valve 30 is connected to the interior of the battery pack.

[0060] In this embodiment, the gas collection pipe 301 is arranged outside the battery pack. Multiple gas collection inlets can be set at one end of the gas collection pipe 301, and each inlet is connected to a breathable valve 30. The breathable valve 30 can be opened in the process of the gas collection pipe 301 collecting the gas generated by the thermal runaway of the battery cell 20, so that the gas generated by the thermal runaway of the battery cell 20 can be discharged from the battery pack in time and discharged in a targeted manner to prevent the exhaust gas from being directly discharged into the air, thereby reducing the harm to the environment and human body.

[0061] Among them, the air valve 30 is a device used to balance the internal and external pressures of the sealing device and prevent the entry of moisture, dust and other pollutants. Its main function is to maintain good air permeability while preventing the intrusion of water droplets, drizzle, fine impurities and chemicals.

[0062] In some embodiments, the battery pack is further provided with a balancing valve, one end of the balancing valve is connected to the interior of the battery pack, and the other end of the balancing valve is connected to the exterior of the battery pack.

[0063] In this embodiment, a balancing valve is installed on the battery pack housing and communicates with the interior of the battery pack. The balancing valve opens after thermal runaway of the battery cells 20 within the battery pack is controlled and exhaust gas is expelled from the battery pack. This valve regulates the internal pressure of the battery pack, preventing deformation and secondary damage. Balancing valves can be categorized into three types: static balancing valves, dynamic balancing valves, and pressure-independent balancing valves.

[0064] In addition, the balancing valve can also be opened during the process of thermal runaway of the battery cells 20 in the battery pack and exhaust gas discharge from the battery pack to prevent secondary damage to the battery pack due to deformation, greatly improving the safety and reliability of the battery pack. It should be noted that the opening of the balancing valve can be selected according to the actual application and is not specifically limited in this application.

[0065] In some embodiments, as Figure 4 As shown, the gas collection component 300 also includes an airflow component 302 and a backup power supply 303; wherein, the airflow component 302 is electrically connected to the battery monitoring circuit 100 and the backup power supply 303, and the airflow component 302 is configured to discharge the gas inside the battery pack in sequence through the breathable valve 30 and the gas collection pipe 301.

[0066] In this embodiment, airflow assembly 302 can control the fan, and the power required for airflow assembly 302 operation can be provided by the battery pack. Airflow assembly 302 can also be activated after a battery cell 20 in the battery pack experiences thermal runaway, reducing the internal pressure of gas collection pipe 301. This allows the exhaust gas generated by thermal runaway to be discharged in a targeted manner through the vent valve 30 and gas collection pipe 301, thereby preventing the exhaust gas from being directly discharged into the air, thereby reducing harm to the environment and human health.

[0067] At the same time, the airflow collection component can also be configured with a backup power supply 303, so that when the battery pack cannot provide power to the airflow component 302, the backup power supply 303 can provide power to the airflow component 302 to ensure that the airflow component 302 can continue to operate, so as to reduce the internal air pressure of the gas collection pipe 301, so that the exhaust gas generated by thermal runaway can be directionally discharged in turn through the breathable valve 30 and the gas collection pipe 301, thereby preventing the exhaust gas from being directly discharged into the air, thereby reducing the harm to the environment and human body.

[0068] Furthermore, in some embodiments, the gas collection assembly 300 further includes a control circuit, which is electrically connected to the battery cell monitoring module 101 , the airflow assembly 302 , and the backup power supply 303 .

[0069] In this embodiment, the battery cell monitoring module 101 turns on the airflow component 302 through the control circuit. At the same time, when the battery pack cannot provide power for the airflow component 302, the backup power supply 303 can power the airflow component 302 through the control circuit to ensure that the airflow component 302 can be turned on after the battery cell 20 in the battery pack has thermal runaway, so as to reduce the internal air pressure of the gas collection pipe 301, so that the exhaust gas generated by thermal runaway can be discharged in a direction through the breathable valve 30 and the gas collection pipe 301.

[0070] Furthermore, in some embodiments, Figure 5 As shown, the control circuit includes a first switch 304, a second switch 305, a third switch 306 and a fourth switch 307, one end of the first switch 304 is electrically connected to the positive pole V+ of the power supply, the other end of the first switch 304 is electrically connected to the airflow component 302, one end of the first switch 304 is electrically connected to the positive pole V+ of the power supply, the other end of the first switch 304 is electrically connected to the airflow component 302, the negative pole V- of the power supply is electrically connected to the airflow component 302, one end of the second switch 305 is electrically connected to the battery cell monitoring module 101, the other end of the second switch 305 is electrically connected to the negative pole V- of the power supply and the airflow component 302, one end of the third switch 306 is electrically connected to the battery management system and one end of the second switch 305, the other end of the third switch 306 is electrically connected to the positive pole of the backup power supply 303, one end of the fourth switch 307 is electrically connected to one end of the third switch 306, the other end of the fourth switch 307 is electrically connected to the airflow component 302, and the negative pole of the backup power supply 303 is electrically connected to the airflow component 302.

[0071] In this embodiment, the power supply can be provided by the battery pack. When the airflow component 302 needs to be turned on, the battery cell monitoring module 101 controls the first switch 304 and the second switch 305 to close, and uses the power supply to power the airflow component 302. When the power supply cannot power the airflow component 302, the battery cell monitoring module 101 controls the third switch 306 and the fourth switch 307 to close, so that the backup power supply 303 can be used to power the airflow component 302.

[0072] In some embodiments, the control circuit includes a relay, the relay includes a coil, and the relay is provided with at least four contacts, namely a first contact, a second contact, a third contact and a fourth contact. The first contact and the second contact can be used as a group of normally open contacts and can be understood as a first switch; the coil can be understood as a second switch; the third contact and the fourth contact can be used as a group of normally open contacts and can be understood as a third switch.

[0073] Specifically, one end of the coil is electrically connected to the slave control board of the battery management system, the other end of the coil is electrically connected to the negative pole of the first power supply, the first contact is electrically connected to the positive pole of the first power supply, the second contact is electrically connected to the airflow component, the third contact is electrically connected to one end of the coil and one end of the fourth switch respectively, and the fourth contact is electrically connected to the positive pole of the second power supply.

[0074] When the airflow assembly needs to be started, the battery management system sends a start signal from the control board to the coil, making the coil conductive, thereby closing the first and second contacts, as well as the third and fourth contacts, so that the first power supply (which can be understood as the battery pack) and the second power supply (which can be understood as the backup power supply) can simultaneously power the airflow assembly. When the first and second power supplies are simultaneously powering the airflow assembly, diodes are installed at both the first and second power supplies to prevent current backflow.

[0075] In some embodiments, the present application also provides a battery pack, which includes the thermal runaway management system 10 mentioned in the above embodiment.

[0076] In this embodiment, a battery management system (BMS) is provided within the battery pack. The BMS ensures safe, reliable, and efficient operation of the battery under various charging, discharging, and environmental conditions. The BMS extends the battery's service life and improves its performance by monitoring and managing battery status parameters, such as voltage, current, and temperature, in real time. Furthermore, the BMS allows the battery pack to control the thermal runaway management system 10, effectively improving the safety and reliability of the battery pack.

[0077] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A thermal runaway management system, characterized in that: include: A battery monitoring circuit is provided inside the battery pack and electrically connected to the battery cells in the battery pack; a fire protection component, disposed inside the battery pack and electrically connected to the battery monitoring circuit; a gas collection assembly, electrically connected to the battery monitoring circuit and in communication with the interior of the battery pack; The battery monitoring circuit is at least configured to monitor the temperature of the battery cell, and control the fire-fighting component to extinguish the fire inside the battery pack, while controlling the gas collection component to collect the gas inside the battery pack.

2. The thermal runaway management system according to claim 1, characterized in that: The battery monitoring circuit includes: A battery cell monitoring module, electrically connected to the battery cell; a temperature monitoring circuit, electrically connected to the battery cell monitoring module and configured to monitor the temperature of the battery cell; The battery cell monitoring module is configured to monitor the status of the battery, and control the fire fighting component to extinguish the fire inside the battery pack, while controlling the gas collecting component to collect the gas inside the battery pack.

3. The thermal runaway management system according to claim 2, characterized in that: The battery cell monitoring module includes a slave control module of the battery management system to which the battery pack belongs.

4. The thermal runaway management system according to claim 2, characterized in that: The temperature monitoring circuit includes a thermal switch; Wherein, one end of the thermal switch is electrically connected to one end of the battery cell, and the other end of the thermal switch is electrically connected to the battery cell monitoring module.

5. The thermal runaway management system according to claim 1, characterized in that: The fire protection assembly includes a smoke detector and a fire extinguishing module; The smoke detector and the fire extinguishing module are both electrically connected to the battery monitoring circuit. The smoke detector is configured to detect smoke inside the battery pack, and the fire extinguishing module is configured to perform fire extinguishing inside the battery pack.

6. The thermal runaway management system according to claim 5, characterized in that: The fire protection assembly also includes a fire protection control module; The fire control module is electrically connected to the battery monitoring circuit, the smoke detector and the fire extinguishing module respectively, and the fire control module is configured to control the fire extinguishing module to perform fire extinguishing inside the battery pack.

7. The thermal runaway management system according to any one of claims 1 to 6, characterized in that: The gas collection assembly includes a gas collection pipe, and the battery pack is provided with a vent valve; The gas collection pipe is arranged outside the battery pack; one end of the gas collection pipe is connected to one end of the breathable valve, and the other end of the breathable valve is connected to the interior of the battery pack.

8. The thermal runaway management system according to claim 7, characterized in that: The battery pack is further provided with a balancing valve, one end of the balancing valve is communicated with the interior of the battery pack, and the other end of the balancing valve is communicated with the exterior of the battery pack.

9. The thermal runaway management system according to claim 7, characterized in that: The gas collection assembly also includes an airflow assembly and a backup power supply; The airflow component is electrically connected to the battery monitoring circuit and the backup power supply, and is configured to discharge the gas inside the battery pack through the air valve and the gas collection pipe in sequence.

10. A battery pack, characterized in that: The thermal runaway management system comprises the thermal runaway management system according to any one of claims 1 to 9.

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