Vehicle explosion-proof battery scheme and system

Abstract

The invention discloses a vehicle explosion-proof battery scheme and system. The scheme comprises the following steps: S10, judging whether a battery management system is in a wake-up state, if yes, carrying out S20, and if not, carrying out S30; S20, judging whether the information, such as the single battery pack voltage, the temperature and the battery pack air pressure sent by a slave board reaches a safety threshold value point or not through the battery management system mainboard, if so, carrying out S21, and if not, returning to the S10; S30, detecting whether the air pressure in the battery pack reaches a safety threshold point or not through an air pressure sensor, if so, executing S40, and if not, returning to the S10; and S40, opening a fire hydrant, and performing rapid fire extinguishing and cooling work on the on-fire battery pack. Key parameters such as air pressure, insulation resistance, temperature and current are monitored in real time through the battery management system in the control strategy level, fault processing is carried out when a power battery system is abnormal, and a fire hydrant can be actively opened to prevent thermal runaway spreading of a battery pack when thermal runaway happens to the battery system.

Description

technical field [0001] The invention belongs to the technical field of battery for vehicles, in particular, the invention relates to a scheme and system of an explosion-proof battery for vehicles. Background technique [0002] Vehicle batteries generally refer to power batteries, that is, power sources that provide power sources for tools, and mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, and golf carts, and are also installed on some special vehicles. Composed of monomer, battery module, battery unit, CSC acquisition system, battery control unit and battery high voltage distribution unit. [0003] When the current vehicle batteries are installed in some special vehicles such as airport fire trucks, urban fire trucks, mine transport vehicles, etc., the power battery scheme adopted is to use ordinary lithium-ion batteries to be installed inside some special vehicles. [0004] The above power battery solution has the f...

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Problems solved by technology

[0005] 1. Since this type of special vehicle often enters and exits firefighting sites, underground mines, etc., and the temperature is high, its battery may experience thermal runaway, which greatly increases the probability of explosion of the power battery system, and once the power battery explodes, it will affect the operation. Personnel and the surrounding environment will have very serious consequences, and the above-mentioned methods have not carried out safe explosion-proof treatment;

[0006] 2. In order to prevent the explosion of some existing batteries, a battery management system will be installed to monitor the use status of the battery at all times to provide guarantee for the safety of new energy vehicles. However, due to the impact of the environment, the battery management system may be out of control. , so that the vehicle will fall into the non-safety explosion-proof state again, thus the above situation will occur

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