CN205598471U - A safety battery box and its safety protection system - Google Patents

Abstract

The utility model provides a safe battery box and safety protection system thereof, is including the box that is used for placing the battery, its characterized in that: the fire extinguishing device, the fire detection device, the controller and the fire reporting device are arranged in the box body; the fire detection device is connected with the controller to detect fire information; the fire extinguishing device comprises at least two fire extinguishing tanks, wherein at least one fire extinguishing tank is connected with a conveying pipe and provided with a spray head; the controller is connected with the fire extinguishing tank to control the fire extinguishing tank to release the fire extinguishing agent according to the fire information, and the fire reporting device is connected with the controller to upload the fire information to the vehicle control room. The utility model discloses can implement effectively putting out a fire and reporting the condition of a fire to the battery box automatically when the battery box catches fire, it is more convenient to install, saves the cost, can not occupy the space beyond the battery box, compact structure.

Description

A safety battery box and its safety protection system

technical field

The utility model relates to the field of vehicle battery boxes, in particular to a safety battery box and a safety protection system thereof.

Background technique

With the rapid development of the national economy and the continuous improvement of people's livelihood and safety awareness, fire-fighting equipment has been widely used, and fire-fighting facilities and fire-extinguishing devices are also equipped in many occasions.

As batteries are used more and more widely, especially pure electric vehicles, the amount of batteries used is large. Battery boxes, the number of battery cells in each box is hundreds to thousands. When the battery is over-charged, over-discharged, or impacted; the battery is punctured, under pressure, short-circuited, overcharged, over-discharged, etc. When the abnormal heat generation rate of the battery is higher than the heat dissipation rate of the battery, the internal pressure and temperature of the battery rise sharply, and enter Uncontrollable self-heating (that is, thermal runaway) state, resulting in the release of gas in a very small number of batteries, and then a chemical reaction, while releasing a large amount of heat energy, and affecting the adjacent battery cells, resulting in explosion, combustion, and heat generation. The battery caught fire and exploded.

At present, batteries are used to extinguish fires, especially active metal batteries. At the same time, some of the gases released by batteries are flammable and explosive gases; some of the gases can undergo further chemical reactions to generate a large amount of heat and other flammable and explosive gases. Therefore, there are many fire extinguishing devices for battery boxes in the prior art. However, such fire extinguishing devices are all installed outside the battery box, and it is necessary to add a fire extinguishing agent delivery pipeline to the corresponding battery box, which is not convenient for installation and high in cost. , also takes up more space.

Utility model content

The main purpose of the utility model is to overcome the prior art, and propose a safe battery box with easy installation and good fire extinguishing effect and its safety protection system.

The utility model adopts the following technical solutions:

A safety battery box, which includes a box body for placing batteries, and is characterized in that: it also includes a fire extinguishing device installed in the box, a fire detection device, a controller and a fire reporting device; the fire detection device and the control The fire extinguishing device is connected to detect fire information; the fire extinguishing device includes at least two fire extinguishing tanks, at least one fire extinguishing tank is connected with a delivery pipe, and at least one fire extinguishing tank is provided with a nozzle; the controller is connected with the fire extinguishing tank to control the release of the fire extinguishing tank according to the fire information Fire extinguishing agent, the fire reporting device is connected with the controller to upload the fire information to the vehicle control room

Preferably, at least one fire extinguishing tank is a pressure storage type fire extinguishing tank, and its spray head is provided with a sealing valve, a constant temperature glass column and an electric control impactor. The impactor is aimed at the constant temperature glass column and connected with the controller.

Preferably, at least one fire extinguishing tank is a non-pressure storage type fire extinguishing tank, and the nozzle of the fire extinguishing tank is equipped with a pressurized and automatically opened part. device or connected to the controller.

Preferably, at least one fire extinguishing tank is a pressure storage type fire extinguishing tank, and the outlet connected to the delivery pipe is provided with an electric control valve or an impactor, and the electric control valve or electric control impactor is connected to the controller.

Preferably, at least one fire extinguishing tank is a non-pressure storage type fire extinguishing tank, and the outlet connected to the delivery pipe is equipped with a pressurized and automatically opened part. Self-starting device or connected with the controller.

Preferably, the fire detection device includes one or more of temperature-sensitive fire detectors, smoke-sensitive fire detectors, and gas detectors.

Preferably, the delivery pipe is arranged around the battery in the box, and a plurality of spray holes are opened on the delivery pipe.

Preferably, the box body is also provided with a breathing port that communicates with the inside and outside of the box, or is installed with a safety valve or a pressure relief valve that communicates with the inside and outside of the box.

Preferably, the box is provided with a safety valve or a pressure relief valve that communicates with the inside and outside of the box, and the safety valve or pressure relief valve is connected to the controller.

A safety protection system for a battery box, including a main control device installed in a vehicle control room, characterized in that it also includes a plurality of any one of the above-mentioned safety battery boxes, and a controller in each box is connected to the main control device.

Preferably, the control room is further provided with several switch devices, which are connected to the main control device and the controllers in several safety battery boxes of the vehicle to control the switches for power supply of the corresponding battery boxes.

Preferably, the vehicle control room is further provided with several alarms, and the several alarms are connected to the fire reporting devices installed in the several vehicle safety battery boxes one by one.

As can be seen from the above description of the utility model, compared with the prior art, the utility model has the following beneficial effects:

1. The battery box of the present utility model is provided with a fire extinguishing device, a fire detection device, a fire reporting device and a controller. The nozzle sprays the fire extinguishing agent, which can automatically effectively extinguish the fire of the battery box and report the fire when a single battery box catches fire. It is more convenient to install, saves costs, does not occupy the space outside the battery box, and has a compact structure; The installation position can be flexibly set according to the structure of the battery box, the size of the capacitance, etc., and the installation method is not limited;

2. The delivery pipe of the fire extinguishing tank of the present invention is arranged around the battery cells. The arrangement of the delivery pipes can be set according to the size of the box and the arrangement of the battery cells, so that the fire extinguishing agent can be transported between the battery cells in time. Realize rapid fire extinguishing, reduce vehicle loss and personal injury;

3. The fire extinguishing tank of the present utility model can adopt the pressure storage type or the non-pressure storage type, with various combinations, good fire extinguishing effect, and can realize the safety protection of the battery box in all aspects;

4. The box body of the present utility model is provided with a safety valve or a pressure relief valve that communicates with the inside and outside of the box body. The safety valve or pressure relief valve can be set to be automatically opened by pressure; it can also be realized by using a solenoid valve and controlled by a controller. More effectively prevent the gas released from the battery from accumulating to cause harm;

5. The safety protection system of the present utility model is equipped with a fire extinguishing device, an acquisition detection device, a fire reporting device and a controller in each battery box, which can independently perform fire detection and start automatic fire extinguishing for a single battery box, and at the same time pass the fire The information reporting device reports the fire information to the control room, which can quickly identify the battery box in fire, control its power failure, and manually send out an alarm to remind relevant personnel to evacuate.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the utility model battery box;

Fig. 2 is embodiment one of the present utility model;

Fig. 3 is the second embodiment of the utility model.

Among them: 10, battery, 20, box, 21, safety valve, 30, fire extinguishing tank, 31, nozzle, 32, sealing valve, 33, constant temperature glass column, 34, glass fixing seat, 35, powder splash plate, 40, Delivery pipe, 51, gas detector, 52, temperature-sensitive fire detector, 53, controller.

detailed description

The utility model will be further described below through specific embodiments.

Referring to FIG. 1 , a safety battery box includes a box body 20 for placing a battery 10 , and a fire extinguishing device installed in the box body 20 , a fire detection device, a controller 53 and a fire reporting device. The fire extinguishing device includes two fire extinguishing tanks 30, which can be placed on the same side or different sides of the box body 20, both of which are pressure storage type fire extinguishing tanks. One of the fire extinguishing tanks is connected to a delivery pipe 40, which is arranged around the battery 10 in the box 20 in the horizontal direction, or is located at a potential dangerous point in the battery box, and the delivery pipe 40 is provided with multiple The spray hole and the outlet of the fire extinguishing tank are provided with an electric control valve or an impactor, and the electric control valve or the electric control impactor is connected with the controller 53 . The electric control valve and the striker are controlled by the controller 53 to open the fire extinguishing tank to deliver the fire extinguishing agent.

Another fire extinguisher, 30, is provided with a nozzle 31, and the outlet of the nozzle 31 faces the direction of the battery. Referring to FIG. 2, the shape of the box in this figure is different from that in FIG. 1. The shower head 31 is provided with a sealing valve 32, which is tightly sealed by a constant temperature glass column 33. Specifically, one end of the temperature-fixed glass column 33 abuts against the sealing valve 32 , and the other end abuts against a glass fixing seat 34 provided on the shower head 31 , and the end of the glass fixing seat 34 is provided with a powder splash plate 35 . An electric control striker (not shown in the figure) may also be included, the electric control striker may be installed on the fixing seat 34, and aimed at the temperature-fixed glass column 33, and the electric control striker is connected with the controller.

In this embodiment, the fire extinguishing agent in the fire extinguishing tank may be an ultrafine dry powder fire extinguishing agent, a gas fire extinguishing agent, or a gas powder fire extinguishing agent mixed with gas and ultrafine dry powder fire extinguishing agent.

The fire detection device is connected with the controller 53 to detect fire information, and the specific fire detection device includes other commonly used detectors such as a temperature-sensitive fire detector 52, a smoke-sensitive fire detector and a gas detector 51, etc. Detection of heat, gas, smoke, etc. Wherein, the temperature-sensing fire detector 52 can be implemented by a temperature-sensing cable detector, and the temperature-sensing cable is arranged around the battery 10 to detect hidden dangers in the box body 20 to the greatest extent.

The controller 53 is connected with the fire extinguishing device to control the fire extinguishing device to release the fire extinguishing agent through the delivery pipe 40 before or when a fire occurs according to the fire information from the fire detection device. The fire extinguishing agent dilutes the gas released by the battery 10, and the concentration decreases after dilution, and the gas released by the tissue produces a secondary chemical reaction; at the same time, the concentration of the combustible gas is reduced to the flammable concentration range.

The fire reporting device is connected with the controller 53, and uploads the fire information to the vehicle control room to give an alarm before or when the fire occurs.

In addition, the utility model is also provided with a breathing port communicating with the inside and outside of the box 20 or a safety valve 21 (see FIG. 2 ) or a pressure relief valve communicating with the inside and outside of the box 20 is installed on the box 20 . Because the fire extinguishing agent has a certain pressure, when the battery 10 is cooled and the gas is diluted, a certain pressure is generated in the box 20, and a large amount of diluted gas can be discharged out of the battery box through the breathing port or the safety valve 21 or the pressure relief valve. , in particular, the safety valve and the pressure relief valve are used to discharge gas with a relatively large flow rate, which can more effectively prevent the gas released from the battery 10 from accumulating and causing harm.

The utility model also proposes a battery box safety protection system, which includes a main control device installed in the vehicle control room and several above-mentioned vehicle safety battery boxes. The controller 53 in each box body 20 is connected to the main control device. The control room is also provided with several switch devices connected with the main control device, and the several switch devices are connected with the controllers 53 in several vehicle safety battery boxes one by one to control the switch corresponding to the power supply of the battery box according to the command of the main control device.

In addition, a number of alarms are also arranged in the vehicle control room, and the number of alarms are connected with the fire reporting devices in the safety battery box of the vehicle one by one. The working principle of the safety battery box and vehicle power safety system of the present utility model is as follows:

When a fire breaks out in some batteries 10 in a certain battery box, it will develop in the order of gas, smoke, burning sound and flame. Then the smoke detector and the gas detector 51 first detect the abnormality, and then with the generation of a large amount of heat, each detector sends the fire information to the controller 53 . For the pressure storage type fire extinguishing tank connected to the delivery pipe, the controller 53 controls the action of its electric control valve and impactor to open the fire extinguishing tank to deliver the fire extinguishing agent.

For another kind of fire extinguishing tank, its temperature-fixed glass column 33 detects the fire temperature, and when the fire temperature reaches the start-up temperature set by the temperature-fixed glass column 33, the temperature-fixed glass column 33 is broken, making the sealing valve 32 lose support, and Driven by the internal pressure of the fire extinguishing tank, it is rushed out of the nozzle 31. At the same time, the fire extinguishing agent in the fire extinguishing tank is sprayed from the outlet of the nozzle 31. After being dispersed by the powder splash plate 35, it is sprinkled on the battery in the box for fire protection, preventing the battery from continuing to fire. fire. The controller can also output a signal to the electric control striker, so that the electric control striker starts and breaks the constant temperature glass column, so that the fire extinguishing tank can immediately spray fire extinguishing agent, and the facilities in the box can effectively extinguish the fire.

At the same time, the corresponding alarm in the control room receives the fire information of the battery box and sends an alarm (sound or warning light) to inform the driver that the driver can manipulate the corresponding switch device to cut off the power supply of the battery box and evacuate the passengers , to avoid casualties.

Real-time example two

Referring to FIG. 3 , a safety battery box and its safety protection system, its main features are the same as those in Embodiment 1, the difference is that the shape of the box body 20 is different. And the two fire extinguishing tanks are non-pressure storage type fire extinguishing tanks 30, and one of the fire extinguishing tanks is connected with a conveying pipe, and its conveying pipe 40 is arranged along the vertical direction. The outlet of the fire extinguishing tank is equipped with a pressurized and automatically opened part, and the fire extinguishing tank is correspondingly provided with a starting medicine box, and the controller 53 is electrically connected with the starting medicine box. The medicine box is controlled to be opened by the controller 53, and driving gas is generated in the medicine box, and the driving gas enters the fire extinguishing agent tank to pressurize the fire extinguishing agent tank, and the pressurized automatic opening part is opened, and the fire extinguishing agent in the fire extinguishing tank is driven Pushed by the gas, it is quickly sprayed out from the delivery pipe, and the fire is quickly extinguished in the box.

Another fire extinguishing tank is equipped with a pressurized and automatically opened part at its spout. This fire extinguishing tank is provided with a starting medicine box, and the starting medicine box is directly connected with the controller. The starting kit can also be provided with an electric-free self-starting device. The non-electric self-starting device includes a heat-conducting tube coated with a self-igniting coating inside, an ignition powder and a fuse. The ignition powder is installed in the heat-conducting tube, one end of the fuse is placed in the heat-conducting tube, and the other end of the fuse is inserted into the starting cartridge. When some batteries in the battery box are on fire, the heat pipe detects the fire temperature, causing the heated self-ignition coating on the inner wall to ignite spontaneously, and at the same time ignites the igniter filled in the heat pipe, so that the igniter ignites the fuse, and then the fuse Excite the starting medicine box to make the starting medicine box generate driving gas. The driving gas enters the fire extinguishing agent tank, pressurizes the fire extinguishing agent tank and opens the fire extinguishing agent nozzle. The fire extinguishing agent in the fire extinguishing agent tank is driven by the driving gas Quickly spray out to quickly extinguish the fire inside the box.

Specifically, when a fire occurs in some of the batteries 10 in a certain battery box, it develops in the order of gas, smoke, burning sound, and flame. Then the smoke detector and the gas detector 51 first detect the abnormality, and then with the generation of a large amount of heat, each detector sends the fire information to the controller 53 . For the non-pressure storage type fire extinguishing tank, the controller 53 controls the starting medicine box to open, or the non-electric self-starting device activates the starting medicine box. The driving gas is generated in the medicine box, and the driving gas enters the fire extinguishing agent tank to pressurize the fire extinguishing agent tank, the pressurized automatic opening part opens, and the fire extinguishing agent in the fire extinguishing tank is quickly ejected from the delivery pipe under the push of the driving gas , quickly implement fire extinguishing in the box.

Embodiment Three

A safety battery box and its safety protection system, the main features of which are the same as those in Embodiment 1, the difference being: two fire extinguishing tanks, one adopts a pressure storage type fire extinguishing tank, and the other adopts a non-pressure storage type fire extinguishing tank, and the specific structure and principle refer to Embodiment one, two.

The above is only a specific embodiment of the utility model, but the design concept of the utility model is not limited thereto, and any non-substantial modification of the utility model by using this concept should be an act of violating the protection scope of the utility model.

Claims (12)

1. A safety battery box, comprising a box for placing batteries, characterized in that: it also includes a fire extinguishing device installed in the box, a fire detection device, a controller and a fire reporting device; the fire detection device It is connected with the controller to detect fire information; the fire extinguishing device includes at least two fire extinguishing tanks, at least one fire extinguishing tank is connected with a delivery pipe, and at least one fire extinguishing tank is provided with a nozzle; the controller is connected with the fire extinguishing tank to control fire extinguishing according to the fire information The tank releases the fire extinguishing agent, and the fire reporting device is connected with the controller to upload the fire information to the vehicle control room. 2. A safety battery box as claimed in claim 1, characterized in that: at least one fire extinguishing tank is a pressure storage type fire extinguishing tank, and its nozzle is provided with a sealing valve, a constant temperature glass column and an electric control impactor, and the sealing valve The outlet of the nozzle is sealed, and it is tightly supported by a constant temperature glass column. The electric control impactor is aimed at the constant temperature glass column and connected with the controller. 3. A safety battery box as claimed in claim 1, wherein at least one fire extinguishing tank is a non-pressure storage type fire extinguishing tank, and the nozzle of the fire extinguishing tank is equipped with a pressurized and automatically opened part, and the inside of the fire extinguishing tank A starting medicine box is provided, and the starting medicine box is provided with a non-electric self-starting device or is connected with the controller. 4. A safety battery box as claimed in claim 1, characterized in that: at least one fire extinguishing tank is a pressure storage type fire extinguishing tank, and the outlet connected to the delivery pipe is provided with an electric control valve or a striker, the electric control valve or The electronically controlled impactor is connected with the controller. 5. A safety battery box as claimed in claim 1, characterized in that: at least one fire extinguishing tank is a non-pressure storage type fire extinguishing tank, and the outlet connected to the delivery pipe is equipped with a pressurized and automatically opened component, and the fire extinguishing tank The tank is provided with a starting medicine box, and the starting medicine box is provided with a non-electric self-starting device or is connected with the controller. 6 . The safety battery box according to claim 1 , wherein the fire detection device includes one or more of temperature-sensitive fire detectors, smoke-sensitive fire detectors, and gas detectors. 7 . The safe battery box according to claim 1 , wherein the delivery pipe is arranged around the batteries in the box, and a plurality of spray holes are opened on the delivery pipe. 8 . 8. A safety battery box according to claim 1, characterized in that: the box body is also provided with a breathing port connecting the inside and outside of the box or is installed with a safety valve or a pressure relief valve connecting the inside and outside of the box. 9. A safety battery box as claimed in claim 8, characterized in that: the box body is provided with a safety valve or a pressure relief valve that communicates with the inside and outside of the box, and the safety valve or pressure relief valve is connected to the controller . 10. A battery box safety protection system, including a main control device installed in the vehicle control room, characterized in that it also includes any one of the safety battery boxes according to claims 1 to 9, and each box has a The controllers are all connected with the main control device. 11. A battery box safety protection system as claimed in claim 10, characterized in that: the control room is also provided with several switch devices, and the several switch devices are connected with the main control device and the control devices in several vehicle safety battery boxes. The devices are connected one by one to control the switch corresponding to the power supply of the battery box. 12. A battery box safety protection system according to claim 10, characterized in that: the vehicle control room is also provided with a number of alarms, and the number of alarms are connected to the fire alarms installed in the number of vehicle safety battery boxes. The information reporting devices are connected one by one.