CN203071188U - Electric automobile storage battery - Google Patents

Abstract

The utility model discloses an electric vehicle accumulator, which comprises a shell, a fire extinguishing agent box which stores fire extinguishing agent inside the casing, several nozzles arranged on the fire extinguishing agent box, a controller, a battery pack, and a device. At least one temperature sensor and at least one smoke sensor in the housing close to the battery pack; the nozzle is provided with a solenoid valve; the controller is electrically connected to the solenoid valve, the temperature sensor and the smoke sensor respectively; The voltage stabilizing circuit is electrically connected with the battery pack. The utility model has the characteristics of extinguishing or cooling the battery inside the battery; the realization of the fire extinguishing or cooling function has nothing to do with whether the battery is installed on the electric vehicle, and the battery can be protected against spontaneous combustion in real time.

Description

Electric vehicle battery

technical field

The utility model relates to a storage battery, in particular to an electric vehicle storage battery capable of automatically extinguishing fire or cooling down.

Background technique

With the rapid development of new energy vehicles, especially the development of pure electric vehicles, in order to increase the battery life of electric vehicles, under the technical conditions of the existing energy density of batteries, electric vehicle manufacturers generally increase the battery capacity of electric vehicles. Volume, to improve the battery's ability to store electrical energy, thereby increasing the battery life of an electric vehicle on a single charge.

The current battery of pure electric vehicles is generally more than 150 kg. Due to the large volume and weight of electric vehicle batteries, as the core component of electric vehicles, their safety issues directly determine the safety of electric vehicles.

The electric energy stored in the battery of an electric vehicle is likely to cause the battery to ignite spontaneously, and whether the battery is installed on the vehicle or not, there is a potential safety hazard of spontaneous combustion.

Chinese Patent Authorization Publication No. CN201120521252U, the authorized publication date is July 25, 2012, discloses a battery pack safety device for electric vehicles, which includes a battery pack; a battery management system; a temperature sensor, which is connected to the battery management system for detecting the internal temperature of the battery pack, and output the detected data to the battery management system to determine whether the internal temperature of the battery pack reaches a first preset value; the relay is connected with the output terminal of the battery pack and the battery management system The connection is used to disconnect the output circuit of the battery pack according to the instruction of the battery management system when the battery management system judges that the internal temperature of the battery pack reaches a first preset value. The utility model can disconnect the storage battery from the automobile circuit system when the temperature of the storage battery rises, but cannot solve the natural problem of the storage battery.

Chinese Patent Authorization Publication No. CN102512776A, the authorized publication date on June 27, 2012 discloses a battery box automatic fire extinguishing device for electric vehicles. The battery box automatic fire extinguishing device includes a plurality of battery boxes, a high-pressure liquid storage tank, an air pump and a controller installed on the upper part of each battery box. The liquid storage tank is filled with a mixture of foam fire extinguishing agent and water in a certain proportion The upper part of the liquid storage tank is connected with the air pump through the air pipe, and the lower part of the liquid storage tank is connected with each battery box through a pipeline, and a solenoid valve is arranged on the pipeline connecting each of the battery boxes, and each battery box is equipped with a There are temperature sensors and/or smoke detectors, and the controller is electrically connected with the temperature sensors and/or smoke detectors, the solenoid valve, the 24V low-voltage power supply on the electric vehicle and the high-voltage air circuit breaker. The battery box automatic fire extinguishing device of this invention is outside the battery box, and can not solve the natural problem of the storage battery.

Contents of the invention

The utility model aims to overcome the shortcoming that the storage battery of an electric vehicle in the prior art is easy to spontaneously ignite, and provides an storage battery of an electric vehicle capable of automatically extinguishing fire or cooling down.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An electric vehicle storage battery, comprising a housing, a fire extinguishing agent box inside the housing that stores a fire extinguishing agent, a number of nozzles on the fire extinguishing agent box, a controller, a battery pack, and a battery pack located near the battery pack At least one temperature sensor and at least one smoke sensor in the housing; the nozzle is provided with a solenoid valve; the controller is electrically connected to the solenoid valve, the temperature sensor and the smoke sensor; the controller is connected to the battery through a DC voltage stabilizing circuit Set of electrical connections.

The utility model is an electric vehicle storage battery capable of self-extinguishing or cooling down. The storage battery is equipped with a fire extinguishing agent, a controller and a temperature and smoke detection device. When the temperature or smoke in the storage battery exceeds the preset temperature value or When the smoke value is low, the controller controls the spraying of fire extinguishing agent to cool down the battery or put out the fire.

The battery pack provides the working voltage for the controller through the voltage stabilization and step-down of the DC voltage stabilization circuit. The temperature sensor and the smoke sensor detect the temperature and smoke signal inside the casing; the controller judges whether the detected temperature and smoke value exceed the preset temperature and smoke value in the controller according to the received detection signal; and further Extinguish fire or cool down.

The utility model is to extinguish or cool the battery inside the battery; the realization of the fire extinguishing or cooling function in the utility model has nothing to do with whether the battery is installed on the electric vehicle, and the battery can be protected against spontaneous combustion in real time.

The working process of electric vehicle storage battery of the present utility model is as follows:

When there is electric energy stored in the battery pack, the battery pack provides working voltage for the controller through the voltage stabilization and step-down of the DC voltage stabilizing circuit; the controller controls the work of the smoke sensor and the temperature sensor; the controller compares the detected temperature or smoke value with the preset Compared with the temperature value or smoke value set in the controller, when at least one of the detected temperature or smoke value exceeds the temperature value or smoke value in the controller, the controller controls the nozzle to spray the fire extinguishing agent through the solenoid valve, The fire extinguishing agent covers the surroundings of the battery pack to extinguish fire or cool down the battery pack.

Preferably, there are 3 spray heads.

Preferably, the temperature sensor is an infrared temperature sensor.

Preferably, it also includes an alarm set on the comprehensive instrument panel of the car, and the alarm is electrically connected with the controller.

Preferably, the alarm includes an alarm lamp and a buzzer.

Preferably, the smoke sensor is an ion-type smoke sensor.

Preferably, the battery pack comprises 6 or 12 cells.

Preferably, the solenoid valve is a self-locking solenoid valve.

The beneficial effects of the utility model are: (1) the utility model is to extinguish the fire or cool down the battery inside the battery; Real-time anti-spontaneous combustion safety protection for batteries.

Description of drawings

Fig. 1 is a kind of functional block diagram of the utility model.

In the figure: a controller 1, a battery pack 2, a temperature sensor 3, a smoke sensor 4, a solenoid valve 5, an alarm 6, and a DC voltage stabilizing circuit 7.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

The embodiment shown in Figure 1 is an electric vehicle battery, including a housing, a fire extinguishing agent box that stores a fire extinguishing agent in the housing, 3 nozzles on the fire extinguishing agent box, a controller 1, The battery pack 2, and 3 temperature sensors 3 and 3 smoke sensors 4 located in the casing close to the battery pack; the nozzle is provided with a solenoid valve 5; the controller is electrically connected with the solenoid valve, the temperature sensor and the smoke sensor respectively; The device is electrically connected to the battery pack through a DC voltage stabilizing circuit 7. The temperature sensor is an infrared temperature sensor. It also includes an alarm device 6 arranged on the comprehensive instrument panel of the automobile, and the alarm device is electrically connected with the controller. The alarm includes an alarm lamp and a buzzer. The smoke sensor is an ionic smoke sensor. The battery pack includes 12 cells. The solenoid valve is a self-locking solenoid valve.

The working process of electric vehicle storage battery of the present utility model is as follows:

When there is electric energy stored in the battery pack, the battery pack provides working voltage for the controller through the voltage stabilization and step-down of the DC voltage stabilizing circuit; the controller controls 3 smoke sensors and 3 temperature sensors to work; the controller will detect the temperature or The smoke value is compared with the temperature value or smoke value preset in the controller. When at least one of the detected temperature or smoke value exceeds the temperature value or smoke value in the controller, the controller controls the nozzle to spray through the solenoid valve. The fire extinguishing agent is released, and the fire extinguishing agent covers the battery pack to extinguish the fire or cool down the battery pack.

Claims (8)

1. An electric vehicle battery, characterized in that it comprises a housing, a fire extinguishing agent box that stores fire extinguishing agent inside the housing, a number of nozzles on the fire extinguishing agent box, a controller (1), a battery group (2), and at least one temperature sensor (3) and at least one smoke sensor (4) located in the housing close to the battery pack; the nozzle is provided with a solenoid valve (5); the controller is connected with the solenoid valve respectively The valve, the temperature sensor and the smoke sensor are electrically connected; the controller is electrically connected to the battery pack through a DC voltage stabilizing circuit (7). 2. The electric vehicle storage battery according to claim 1, wherein there are three nozzles. 3. The electric vehicle storage battery according to claim 1, wherein the temperature sensor is an infrared temperature sensor. 4. The electric vehicle storage battery according to claim 1, further comprising an alarm (6) arranged on the comprehensive instrument panel of the vehicle, and the alarm is electrically connected to the controller. 5. The electric vehicle storage battery according to claim 4, wherein the alarm device includes a warning light and a buzzer. 6. The electric vehicle storage battery according to claim 1 or 2 or 3 or 4 or 5, characterized in that the smoke sensor is an ion-type smoke sensor. 7. The storage battery for electric vehicles according to claim 1 or 2 or 3 or 4 or 5, wherein the battery pack includes 6 or 12 batteries. 8. The electric vehicle battery according to claim 1 or 2 or 3 or 4 or 5, characterized in that the solenoid valve is a self-locking solenoid valve.

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