New energy vehicle power battery protection and flame retardation system and method

Abstract

The invention relates to a new energy vehicle power battery protection flame-retardant system and method, and belongs to the technical field of new energy vehicle protection. The system comprises a controller, a power source, an unfolding device and sensors, the power source, the unfolding device and the sensors are electrically connected with the controller, the unfolding device comprises a gas generator and flame-retardant cloth, and the sensors comprise a temperature sensor arranged on a vehicle power battery, a smoke sensor and collision sensors arranged on a vehicle body and the power battery; and the unfolding device is arranged corresponding to a power battery of the vehicle. The invention has the following beneficial effects: when the vehicle power battery burns due to high temperature or accident collision, flames, high temperature and a large amount of smoke generated by burning are isolated, the escape time of passengers is prolonged, the medical cost caused by casualties is reduced, and the economic loss is effectively reduced; and meanwhile, by reducing the number of casualties in traffic accidents, the overall safety level of the society is improved, and the social stability is maintained.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle protection, and specifically relates to a flame retardant system and method for protecting a power battery of a new energy vehicle. Background Art

[0002] With the rapid development and popularization of new energy vehicle technology, new energy vehicles can be seen everywhere on domestic roads. New energy vehicles have replaced oil and internal combustion engines with electricity and power batteries, and drive vehicles with clean energy, with significant effects in energy conservation and emission reduction.

[0003] However, compared with traditional fuel vehicles, new energy vehicles have a higher risk of spontaneous combustion. In the event of a traffic accident, the power battery will burn rapidly and violently after being collided, squeezed, or punctured. The combustion temperature can reach 500℃-1000℃ and is accompanied by a large amount of thick smoke. The doors and windows fail due to damage to the electrical system, resulting in passengers generally having only about 5-6 seconds to react. The difficulty of escape and the short escape time have become a major problem for new energy vehicles today. Summary of the invention

[0004] The purpose of the present invention is to provide a flame retardant protection system and method for a new energy vehicle power battery, which can isolate flames, high temperatures and large amounts of smoke generated by combustion, effectively delay the combustion process of the vehicle power battery, and prolong the escape time of passengers.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A flame retardant protection system for a power battery of a new energy vehicle comprises a controller and a power supply electrically connected to the controller, an expansion device and a sensor, the expansion device comprises a gas generator and a flame retardant cloth, the sensor comprises a temperature sensor and a smoke sensor arranged on the vehicle power battery, and a collision sensor arranged on the vehicle body and the power battery; the expansion device is arranged corresponding to the power battery of the vehicle.

[0006] Furthermore, the controller is electrically connected to a power battery management system of the vehicle.

[0007] The present invention also provides a flame retardant protection system for a power battery of a new energy vehicle, comprising the following steps: S1: The temperature sensor, collision sensor and smoke sensor monitor the status of the vehicle body and power battery in real time and continuously transmit the signal to the controller.

[0008] S2: When the collision sensor detects that the acceleration exceeds the preset threshold and determines that the vehicle body or power battery is hit, or the temperature sensor detects that the temperature reaches the critical value for ignition, or the smoke sensor detects that the power battery generates smoke, the corresponding sensor sends an alarm signal to the controller.

[0009] S3: After receiving the alarm signal, the controller sends an execution signal to the deployment device and the power battery management system.

[0010] S4: After the deployment device receives the execution signal, the gas generator starts to work and generate gas. The flame-retardant cloth is expanded by the gas and covers the surface of the power battery, isolating the flame, high temperature and a large amount of smoke generated by the combustion, delaying the combustion process of the vehicle and buying time for the passengers to escape; After receiving the execution signal, the power battery management system disconnects the relay and completes the high-voltage power cut. At the same time, it sounds an alarm through warning lights and buzzers to remind passengers to escape as soon as possible.

[0011] The beneficial effects of the present invention are: When the vehicle's power battery burns due to high temperature or accident collision, it isolates the flame, high temperature and large amount of smoke produced by the combustion and prolongs the escape time of passengers, reducing medical expenses caused by casualties and effectively reducing economic losses. At the same time, by reducing the number of casualties in traffic accidents, it also improves the overall safety level of society and maintains social stability, which is a significant improvement compared to existing technologies.

[0012] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural block diagram of a flame retardant protection system for a power battery of a new energy vehicle shown in one embodiment of the present invention. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] See also Figure 1 The new energy vehicle power battery protection flame retardant system shown in a preferred embodiment of the present application includes a controller, a power supply, an expansion device and a sensor electrically connected to the controller, the expansion device includes a gas generator and a flame retardant cloth, and the sensor includes a temperature sensor and a smoke sensor arranged on the vehicle power battery and a collision sensor arranged on the vehicle body and the power battery.

[0018] In this embodiment, the flame retardant cloth is a high-silica cloth, which can work for a long time at 1000°C and can effectively withstand high temperatures at 1500°C, which is far higher than the combustion temperature of the power battery. It can effectively isolate flames, high temperatures and large amounts of smoke generated by combustion, and extend the escape time of passengers.

[0019] Furthermore, in other embodiments, the flame retardant cloth can also be made of any high temperature resistant material.

[0020] Specifically, the controller is also electrically connected to the vehicle's power battery management system (BMS).

[0021] Specifically, the deployment device is arranged corresponding to the power battery of the vehicle.

[0022] The present application also provides a flame retardant protection method for a power battery of a new energy vehicle, comprising the following steps: S1: The temperature sensor, collision sensor and smoke sensor monitor the status of the vehicle body and power battery in real time and continuously transmit the signal to the controller.

[0023] S2: When the collision sensor detects that the acceleration exceeds the preset threshold and determines that the vehicle body or power battery is hit, or the temperature sensor detects that the temperature reaches the critical value for ignition, or the smoke sensor detects that the power battery generates smoke, the corresponding sensor sends an alarm signal to the controller.

[0024] S3: After receiving the alarm signal, the controller sends an execution signal to the deployment device and the power battery management system.

[0025] S4: After the deployment device receives the execution signal, the gas generator starts to work and generate gas. The flame-retardant cloth is expanded by the gas and covers the surface of the power battery, isolating the flame, high temperature and a large amount of smoke generated by the combustion, delaying the combustion process of the vehicle and buying time for the passengers to escape; After receiving the execution signal, the power battery management system disconnects the relay and completes the high-voltage power cut. At the same time, it sounds an alarm through warning lights and buzzers to remind passengers to escape as soon as possible.

[0026] The flame retardant system shown in the present invention can be applied to different scenarios through a combination of multiple sensors. Whether it is in hot weather, during charging, or in collision conditions such as traffic accidents, it can effectively provide warnings and protection, greatly extending the escape time of passengers.

[0027] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A flame retardant protection system for power batteries of new energy vehicles, characterized in that: It includes a controller and a power supply electrically connected to the controller, an unfolding device and a sensor, the unfolding device includes a gas generator and a flame-retardant cloth, the sensor includes a temperature sensor and a smoke sensor arranged on the vehicle power battery, and a collision sensor arranged on the vehicle body and the power battery; the unfolding device is arranged corresponding to the power battery of the vehicle.

2. The flame retardant protection system for power batteries of new energy vehicles according to claim 1, characterized in that: The controller is electrically connected to the power battery management system of the vehicle.

3. A flame retardant protection method for power batteries of new energy vehicles, characterized in that: The flame retardant protection system for power batteries of new energy vehicles according to any one of claims 1 to 2 is adopted. The following steps are involved: S1: Temperature sensors, collision sensors and smoke sensors monitor the status of the vehicle body and power battery in real time and continuously transmit signals to the controller; S2: When the collision sensor detects that the acceleration exceeds the preset threshold and determines that the vehicle body or power battery is hit, or the temperature sensor detects that the temperature reaches the critical value for ignition, or the smoke sensor detects that the power battery generates smoke, the corresponding sensor sends an alarm signal to the controller; S3: After receiving the alarm signal, the controller sends an execution signal to the deployment device and the power battery management system; S4: After the deployment device receives the execution signal, the gas generator starts to work and generate gas. The flame-retardant cloth is expanded by the gas and covers the surface of the power battery, isolating the flame, high temperature and a large amount of smoke generated by the combustion, delaying the combustion process of the vehicle and buying time for the passengers to escape; After receiving the execution signal, the power battery management system disconnects the relay and completes the high-voltage power cut. At the same time, it sounds an alarm through warning lights and buzzers to remind passengers to escape as soon as possible.

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