Remotely controlled self-extinguishing battery pack and system

Abstract

The present invention discloses a remotely controlled self-extinguishing battery pack and system, including a battery pack body and a fire extinguishing system. The battery pack body has a multi-layer structure, and is internally provided with sensors, a control panel, and a power-off structure, while the external portion thereof is provided with a fire extinguishing system. The fire extinguishing system has multiple trigger mechanisms and a dual coordinated fire extinguishing mechanism to promptly extinguish the power supply when combustion occurs. The present application adopts a multi-layer structure to separate the battery pack, and combines temperature and smoke sensors to accurately locate the abnormal heating layer; the layered structure isolates the fire, optimizes the space and improves the energy density; adopts a water-based plus aerosol dual fire extinguishing mechanism, in which the aerosol is first released to inhibit the reaction, and the water-based is then cooled to coordinately deal with thermal runaway; the hot melt ball automatically switches pressure without the need for external energy; the three trigger mechanisms are integrated to form a protection system, enhance emergency response capabilities, and ensure reliability under extremely high temperatures; the circuit is automatically cut off to prevent diffusion in the event of an abnormality; the separate design avoids interference, and the metal spring realizes power-off protection; multiple sensors improve monitoring fault tolerance, and the pressure difference ensures the fire extinguishing sequence.

Description

Technical Field

[0001] The present invention relates to the field of new energy batteries, and in particular to a remotely controllable self-extinguishing battery pack and system. Background Art

[0002] With the rise of new energy, batteries, as the core of new energy, have been widely used in transportation, energy storage, mobile devices and other fields.

[0003] However, the risks of new energy batteries cannot be ignored. They are prone to spontaneous combustion in hot summer or other extreme conditions. In addition to improving the raw materials of batteries, some manufacturers have installed automatic fire extinguishing devices for new energy batteries, and use remote control trigger mechanisms or high-temperature self-trigger mechanisms to extinguish battery fires to avoid danger.

[0004] However, whether it is gas fire extinguishing or water-based fire extinguishing, a trigger device is required to achieve fire extinguishing. In the existing technology, solenoid valves are generally used for control. However, the solenoid valve control has a fatal flaw, that is, it needs to rely on battery power and it is a single trigger mechanism. When the battery burns and cannot power supply, the fire extinguishing cannot be triggered, which will cause the fire extinguishing structure to fail. Summary of the Invention

[0005] Based on the shortcomings of the prior art that the triggering of the new energy battery self-extinguishing device relies on the solenoid valve, which is prone to power failure and failure to be triggered, resulting in fire extinguishing failure, the present invention provides a remotely controllable self-extinguishing battery pack and system.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] Remotely controlled self-extinguishing battery pack and system, including the battery pack body and fire extinguishing system,

[0008] The battery pack includes:

[0009] The housing has a multi-layered accommodating cavity;

[0010] The battery pack is layered in each accommodating cavity and the layers are electrically connected;

[0011] a control board disposed in the accommodation cavity of the top layer, electrically connected to the battery pack for charging and discharging the battery, and having a remote communication module;

[0012] A sensor is provided in each accommodating cavity for detecting the temperature and smoke of each accommodating cavity;

[0013] The fire extinguishing system includes:

[0014] The covering shell has a slot in the middle, and the battery pack body is inserted into the slot. The interior of the covering shell is provided with a heat insulation cavity, a water-based fire extinguishing cavity and an aerosol fire extinguishing cavity from the inside to the outside. The top of the aerosol fire extinguishing cavity is provided with a horizontal channel, the top of the water-based fire extinguishing cavity is provided with a vertical channel, and the vertical channel is connected to the internal space of the shell through a pipeline. The horizontal channel extends to the top of the water-based fire extinguishing cavity and intersects with the vertical channel perpendicularly. The intersection is a spherical space and a hot-melt ball is provided in the spherical space. The top of the spherical space is provided with a fire extinguishing channel extending outside the covering shell, and the hot-melt ball blocks the vertical channel, the horizontal channel and the fire extinguishing channel;

[0015] Fire extinguishing materials, including a water-based fire extinguishing agent disposed in the water-based fire extinguishing chamber and an aerosol disposed in the aerosol fire extinguishing chamber;

[0016] The fire extinguishing trigger device includes an ignition device arranged at the horizontal channel and the bottom of the aerosol fire extinguishing chamber, and a thermal wire and a control wire connected to the ignition device. The end of the thermal wire is abutted against the shell for passive high-temperature triggering, and the control wire is connected to the control board for active control triggering.

[0017] Preferably, a partition with a through hole is provided in the shell and the internal space of the shell is divided into several accommodating chambers by the partition, wherein the battery pack in the bottom accommodating chamber vertically slides with the accommodating chamber in which it is located and a metal spring in contact with the negative pole of the battery pack is provided at the bottom of the bottom accommodating chamber, an electric auxiliary lifting structure is provided in the middle of the metal spring and the auxiliary lifting structure and the metal spring jointly apply a vertical upward lifting force to lift the battery pack at the bottom to electrically connect it with the battery pack above it.

[0018] Preferably, the auxiliary lifting device includes a magnet and an electromagnetic device, which are respectively arranged on the bottom surface of the battery pack and the bottom bottom of the accommodating cavity. The electromagnetic device is electrically connected to the control board. When the control board supplies power to the electromagnetic device, a repulsive force is generated between the electromagnetic device and the magnet, and the elastic force of the metal spring is cooperated to lift the battery pack at the bottom so that the positive pole of the battery pack at the bottom contacts the negative pole of the battery pack above it and is electrically connected. When the control board stops supplying power, the battery pack at the bottom compresses the metal spring under the action of gravity, thereby disconnecting from the battery pack above it.

[0019] Preferably, the circuit board has a power supply module and a control module. The power supply module supplies power to the outside through the battery packs connected in series, and the control module supplies power individually or in parallel through the battery packs.

[0020] Preferably, the control module is connected to each sensor and the execution unit, and sends the detection data to the remote control terminal through the communication module.

[0021] Preferably, the remote control terminal is one of a mobile phone, a tablet computer, and a computer.

[0022] Preferably, the hot-melt ball is a fusible glass ball plug or a fusible alloy ball plug.

[0023] Preferably, the sensor includes a temperature sensor and a smoke sensor. The temperature sensor is arranged in the accommodating cavity of each layer, and the smoke sensor is arranged in the accommodating cavity of the top layer.

[0024] Preferably, the vertical channel extends downward into the water-based fire extinguishing chamber. The working pressure during aerosol fire extinguishing is 2-5 times the working pressure of the water-based fire extinguishing agent. The hot-melt ball slides down the vertical channel when it melts due to heat, and blocks the vertical channel during the early sliding, creating a time difference between aerosol fire extinguishing and water-based fire extinguishing.

[0025] Preferably, the diameter of the spherical space is the same as the diameter of the hot-melt sphere, and the diameter of the hot-melt sphere is slightly larger than the diameters of the vertical channel, the horizontal channel and the fire extinguishing channel.

[0026] Compared with the existing technology, the advantages of the present invention are: this application adopts a multi-layer structure to separate the battery pack, and combines temperature and smoke sensors to accurately locate the abnormal heating layer; the layered structure isolates the fire, optimizes the space and improves the energy density; adopts a water-based and aerosol dual fire extinguishing mechanism, the aerosol is released first to inhibit the reaction, and the water-based is then cooled to jointly deal with thermal runaway; the hot-melt ball automatically switches the pressure without the need for external energy; integrates three trigger mechanisms to form a protection system, enhances emergency capabilities, and ensures reliability under extremely high temperatures; automatically cuts off the circuit to prevent spread in the event of an abnormality; the separate design avoids interference, and the metal spring realizes power-off protection; multiple sensors improve monitoring fault tolerance, and the pressure difference ensures the fire extinguishing sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0028] Figure 1 A perspective view of this application;

[0029] Figure 2 A top view of the present application;

[0030] Figure 3 and Figure 4 This is an exploded view of the application;

[0031] Figure 5 for Figure 2 Middle AA section view;

[0032] Figure 6 for Figure 5 Enlarged view of the middle Q;

[0033] Figure 7 for Figure 5 Enlarged view of H in the middle;

[0034] In the figure: 10, battery pack body; 101, shell; 102, battery pack; 103, temperature sensor; 104, magnet; 105, smoke sensor; 106, control board; 107, metal spring; 108, electromagnetic device; 20, covering shell; 201, insulation cavity; 202, water-based fire extinguishing cavity; 203, aerosol fire extinguishing cavity; 30, ignition device; 401, horizontal channel; 402, vertical channel; 403, pipeline.

[0035] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention. Example

[0036] Remotely controlled self-extinguishing battery packs and systems, such as Figure 1-7 As shown, it includes a battery pack body 10 and a fire extinguishing system.

[0037] The battery pack body 10 includes:

[0038] The housing 101 has a multi-layered accommodating cavity;

[0039] Battery packs 102 are layered within each chamber, with each layer electrically connected. The multiple layers of chambers separate the battery packs 102, and combined with temperature sensors 103 and smoke sensors 105, they enable precise fire location. This structural design not only optimizes space utilization but also effectively prevents cross-layer fire spread through physical isolation.

[0040] The control board 106 is located in the top chamber and is electrically connected to the battery pack 102 for charging and discharging. It includes a remote communication module. The control board 106 transmits sensor data remotely for overall monitoring. Furthermore, trigger thresholds can be remotely set, such as trigger temperature adjustments, and fire extinguishing can be remotely triggered.

[0041] Sensors are provided in each accommodating cavity to detect the temperature and smoke of each accommodating cavity. The sensors include a temperature sensor 103 and a smoke sensor 105 to detect the status of the battery pack 102 and transmit the data to the control board 106 or a remote control terminal to control whether to extinguish the fire;

[0042] The fire extinguishing system includes:

[0043] The covering shell 20 has a slot in the middle, and the battery pack body 10 is inserted into the slot. The interior thereof is provided with a heat-insulating cavity 201, a water-based fire extinguishing cavity 202, and an aerosol fire extinguishing cavity 203 from the inside to the outside. A horizontal channel 401 is provided at the top of the aerosol fire extinguishing cavity 203, and a vertical channel 402 is provided at the top of the water-based fire extinguishing cavity 202. The vertical channel 402 is connected to the internal space of the shell 101 through a pipe 403. The horizontal channel 401 extends to the top of the water-based fire extinguishing cavity 202 and intersects with the vertical channel 402 vertically. The intersection is a spherical space, and a hot-melt ball 01 is provided in the spherical space. The top of the spherical space is provided with a fire extinguishing channel extending to the outside of the covering shell 20. The hot-melt ball 01 blocks the vertical channel 402, the horizontal channel 401, and the fire extinguishing channel.

[0044] The fire extinguishing material includes a water-based fire extinguishing agent disposed in the water-based fire extinguishing chamber 202 and an aerosol disposed in the aerosol fire extinguishing chamber 203. The nested arrangement of the water-based fire extinguishing agent for rapid temperature reduction and the aerosol for chemical reaction inhibition takes into account both initial fire extinguishing and deep suppression, solving the problem that a single fire extinguishing agent cannot cope with all stages of battery thermal runaway;

[0045] The fire extinguishing trigger device includes an ignition device 30 arranged at the bottom of the aerosol fire extinguishing chamber 203 at the horizontal channel 401, and a thermal wire and a control wire connected to the ignition device 30. The end of the thermal wire is abutted against the shell 101 for passive high-temperature triggering, and the control wire is connected to the control board 106 for active control triggering. Through the hot-melt sealing design of the spherical space, the fire extinguishing agent is automatically released at high temperature without the need for external energy and has high reliability. Among them, when the fire extinguishing is triggered, the ignition device 30 is ignited, and the high temperature generated after the top ignition device 30 is ignited melts the surface of the hot-melt ball 01, and the horizontal channel 401 and the fire extinguishing channel are connected. A large amount of gas generated by the aerosol enters the fire extinguishing channel and enters the shell 101 for fire extinguishing. At the same time, since the gas pressure generated by the aerosol is greater than the pressure in the water-based fire extinguishing chamber 202, this part of the gas will push the incomplete hot-melt ball 01 into the vertical channel 402 and fall into the water-based fire extinguishing chamber 202. During this period of time, the gas generated by the aerosol produces a fire extinguishing effect. When its gas pressure decreases or the melting degree of the hot-melt ball 01 increases, the water-based fire extinguishing agent enters the shell 101 from the fire extinguishing channel for fire extinguishing, and the dual fire extinguishing works synergistically to achieve the maximum fire extinguishing effect. In addition, when triggered, there are three triggering mechanisms: the first is that when the value detected by the sensor exceeds the threshold, the control board 106 controls the ignition device 30 to ignite; the second is that the value is detected by the sensor and transmitted to the remote control terminal by the remote communication module, and the ignition device 30 is automatically controlled or manually controlled by the remote control terminal to ignite; the third is when the temperature rises, the thermistor detects high temperature, and then triggers the ignition device 30 to ignite. The ignition device 30 is an ignition device that generates an arc.

[0046] Preferably, a partition with a through hole is provided within the housing 101, and the interior space of the housing 101 is divided into a plurality of accommodating chambers by the partition. The battery pack 102 in the bottom accommodating chamber vertically slides with the accommodating chamber in which it is located, and a metal spring 107 is provided at the bottom of the bottom accommodating chamber to contact the negative pole of the battery pack 102. An electric auxiliary lifting structure is provided in the middle of the metal spring 107, and the auxiliary lifting structure and the metal spring 107 jointly apply a vertical upward lifting force to lift the bottom battery pack 102 to electrically connect it with the battery pack 102 above it. In this solution, the through hole is used for contact and electrical connection between the upper and lower battery packs 102, and the partition is used to isolate the upper and lower battery packs 102 to reduce mutual influence. In addition, the metal spring 107 is connected to the control board 106 via a power line. Since the bottom battery pack 102 has space for vertical sliding, it descends under the action of gravity when the lifting force disappears, thereby disconnecting the multiple battery packs 102, thereby achieving power off.

[0047] Preferably, the auxiliary lifting device includes a magnet 104 and an electromagnetic device 108, which are respectively arranged on the bottom surface of the bottom battery pack 102 and the bottom of the accommodating cavity. The electromagnetic device 108 is electrically connected to the control board 106. When the control board 106 supplies power to the electromagnetic device 108, a repulsive force is generated between the electromagnetic device 108 and the magnet 104, and the elastic force of the metal spring 107 is used to lift the bottom battery pack 102 so that the positive pole of the bottom battery pack 102 contacts the negative pole of the battery pack 102 above it and is electrically connected. When the control board 106 stops supplying power, the bottom battery pack 102 compresses the metal spring 107 under the action of gravity, thereby disconnecting from the battery pack 102 above it. This solution is a specific solution for the auxiliary jacking device. Through the cooperation of the electromagnetic device 108 and the magnetic steel 104, power off and circuit breaking can be achieved. Compared with setting a circuit breaker, it will only break the circuit when the temperature is abnormal or smoke appears, reducing the impact of temporary voltage and current abnormalities on the system, and is more targeted.

[0048] Preferably, the control board 106 includes a power supply module and a control module. The power supply module supplies power via the series-connected battery packs 102, while the control module supplies power via the battery packs 102 individually or in parallel. This solution separates the two modules: the power supply module is used for charging and discharging, while the control module is used for monitoring and controlling fire extinguishing triggers. This prevents the two modules from interfering with each other, facilitating better operation.

[0049] Preferably, the control module is connected to each sensor and the execution unit, and sends the detection data to the remote control terminal through the communication module.

[0050] Preferably, the remote control terminal is one of a mobile phone, a tablet computer, and a computer.

[0051] Preferably, the hot melt ball 01 is a fusible glass ball plug or a fusible alloy ball plug, which will melt at 120-140 degrees Celsius.

[0052] Preferably, the sensors include temperature sensors 103 and smoke sensors 105. Temperature sensors 103 are located in the accommodating cavities of each floor, while smoke sensors 105 are located in the accommodating cavity of the top floor. Multiple temperature sensors 103 are used to detect the temperature of each floor, providing rapid feedback when localized combustion occurs. Since smoke tends to circulate upward, only one smoke sensor 105 is required, located at the top. Multiple sensors can prevent single sensor failure.

[0053] Preferably, vertical channel 402 extends downward into water-based fire extinguishing chamber 202. The operating pressure of aerosol fire extinguishing is 2-5 times that of water-based fire extinguishing agents. When the hot-melt balls 01 melt, they slide down vertical channel 402, blocking vertical channel 402 during their initial slide. This creates a time difference between aerosol and water-based fire extinguishing. By creating a pressure differential, the two fire extinguishing mechanisms can be activated at different times, achieving perfect synergy.

[0054] Preferably, the diameter of the spherical space is the same as the diameter of the hot-melt ball 01 and the diameter of the hot-melt ball 01 is slightly larger than the diameters of the vertical channel 402, the horizontal channel 401 and the fire extinguishing channel.

[0055] The above describes the remotely controlled self-extinguishing battery pack and system provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art will be able to make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A remotely controlled self-extinguishing battery pack and system, comprising a battery pack body and a fire extinguishing system, characterized in that: The battery pack includes: The housing has a multi-layered accommodating cavity; The battery pack is layered in each accommodating cavity and the layers are electrically connected; a control board disposed in the accommodation cavity of the top layer, electrically connected to the battery pack for charging and discharging the battery, and having a remote communication module; A sensor is provided in each accommodating cavity for detecting the temperature and smoke of each accommodating cavity; The fire extinguishing system includes: The covering shell has a slot in the middle, and the battery pack body is inserted into the slot. The interior of the covering shell is provided with a heat insulation cavity, a water-based fire extinguishing cavity and an aerosol fire extinguishing cavity from the inside to the outside. The top of the aerosol fire extinguishing cavity is provided with a horizontal channel, the top of the water-based fire extinguishing cavity is provided with a vertical channel, and the vertical channel is connected to the internal space of the shell through a pipeline. The horizontal channel extends to the top of the water-based fire extinguishing cavity and intersects with the vertical channel perpendicularly. The intersection is a spherical space and a hot-melt ball is provided in the spherical space. The top of the spherical space is provided with a fire extinguishing channel extending outside the covering shell, and the hot-melt ball blocks the vertical channel, the horizontal channel and the fire extinguishing channel; Fire extinguishing materials, including a water-based fire extinguishing agent disposed in the water-based fire extinguishing chamber and an aerosol disposed in the aerosol fire extinguishing chamber; The fire extinguishing trigger device includes an ignition device arranged at the horizontal channel and the bottom of the aerosol fire extinguishing chamber, and a thermal wire and a control wire connected to the ignition device. The end of the thermal wire is abutted against the shell for passive high-temperature triggering, and the control wire is connected to the control board for active control triggering.

2. The remotely controllable self-extinguishing battery pack and system according to claim 1, characterized in that: A partition with a through hole is provided in the shell and the internal space of the shell is divided into several accommodating chambers by the partition, wherein the battery pack in the bottom accommodating chamber vertically slides with the accommodating chamber in which it is located and a metal spring in contact with the negative pole of the battery pack is provided at the bottom of the bottom accommodating chamber, an electric auxiliary lifting structure is provided in the middle of the metal spring and the auxiliary lifting structure and the metal spring jointly apply a vertical upward lifting force to lift the battery pack at the bottom to electrically connect it with the battery pack above it.

3. The remotely controllable self-extinguishing battery pack and system according to claim 2, characterized in that: The auxiliary lifting device includes a magnet and an electromagnetic device, which are respectively arranged on the bottom surface of the battery pack and the bottom of the accommodating cavity. The electromagnetic device is electrically connected to the control board. When the control board supplies power to the electromagnetic device, a repulsive force is generated between the electromagnetic device and the magnet, and the elastic force of the metal spring is cooperated to lift the battery pack at the bottom so that the positive pole of the battery pack at the bottom contacts the negative pole of the battery pack above it and is electrically connected. When the control board stops supplying power, the battery pack at the bottom compresses the metal spring under the action of gravity, thereby disconnecting from the battery pack above it.

4. The remotely controllable self-extinguishing battery pack and system according to claim 1, characterized in that: The circuit board has a power supply module and a control module. The power supply module supplies power to the outside through the battery packs connected in series, and the control module supplies power to the battery packs individually or in parallel.

5. The remotely controllable self-extinguishing battery pack and system according to claim 4, characterized in that: The control module is connected to each sensor and the execution unit, and sends the detection data to the remote control terminal through the communication module.

6. The remotely controllable self-extinguishing battery pack and system according to claim 5, characterized in that: The remote control terminal is one of a mobile phone, a tablet computer, and a computer.

7. The remotely controllable self-extinguishing battery pack and system according to claim 1, characterized in that: The hot melt ball is a fusible glass ball plug or a fusible alloy ball plug.

8. The remotely controllable self-extinguishing battery pack and system according to claim 1, characterized in that: The sensors include temperature sensors and smoke sensors. The temperature sensors are arranged in the accommodating cavities of each layer, and the smoke sensors are arranged in the accommodating cavity of the top layer.

9. The remotely controllable self-extinguishing battery pack and system according to claim 1, characterized in that: The vertical channel extends downward into the water-based fire extinguishing chamber. The working pressure during aerosol fire extinguishing is 2-5 times that of the water-based fire extinguishing agent. The hot-melt ball slides down the vertical channel when it melts due to heat, and blocks the vertical channel during the early sliding, creating a time difference between aerosol fire extinguishing and water-based fire extinguishing.

10. The remotely controllable self-extinguishing battery pack and system according to claim 1, characterized in that: The diameter of the spherical space is the same as the diameter of the hot-melt ball, and the diameter of the hot-melt ball is slightly larger than the diameters of the vertical channel, the horizontal channel and the fire-extinguishing channel.

Images