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Nitrogen protection system for power battery

A nitrogen protection and power battery technology, applied in battery/battery traction, battery/fuel cell control devices, electric vehicles, etc., can solve problems such as safety accidents, battery combustion or explosion, to prevent safety accidents and increase oxygen concentration , the effect of improving comfort

Pending Publication Date: 2022-08-09
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power battery nitrogen protection system to solve the technical problem in the prior art that the battery is prone to combustion or explosion after thermal runaway, resulting in safety accidents

Method used

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  • Nitrogen protection system for power battery
  • Nitrogen protection system for power battery
  • Nitrogen protection system for power battery

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0041] like Figure 1 to Figure 6As shown, the power battery nitrogen protection system includes a nitrogen part 100 and an oxygen part 200. The nitrogen part 100 is used to fill the battery box 109 with nitrogen to maintain a positive pressure environment in the battery box 109 and reduce the oxygen concentration in the battery box. The power battery in the battery box is thermally out of control, and it will not burn or explode. The oxygen portion 200 can supply oxygen to the passenger area 203, increase the oxygen concentration in the passenger area 203, and improve the comfort of the passengers.

[0042] The nitrogen part 100 includes a primary filter 101, an air compressor 102, a condenser 103, a dryer 104, a high-pressure gas storage cylinder 105, a secondary filter 106, a tertiary filter 107, a The nitrogen module 108 and the battery box 109, wherein the primary filter 101, the air compressor 102, the condenser 103, the dryer 104, and the high-pressure gas storage tank...

specific Embodiment 2

[0055] The difference from Embodiment 1 is that in Embodiment 1, an air compressor is used to generate high-pressure gas, and in this embodiment, an air pump is used to generate high-pressure gas.

specific Embodiment 3

[0057] The difference from Embodiment 1 is that in Embodiment 1, the vehicle braking system and the power battery nitrogen protection system share an air compressor. In this embodiment, the power battery nitrogen protection system is separately equipped with an air compressor and an air compressor. Condenser, dryer and other structures downstream of the compressor.

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PUM

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Abstract

The invention relates to a power battery nitrogen protection system which comprises an air compressor or an inflation pump for generating high-pressure air and further comprises a nitrogen generation module connected with the air compressor or the inflation pump, and the nitrogen generation module comprises a nitrogen generation device for separating nitrogen and oxygen in the high-pressure air. The nitrogen generation device is provided with a nitrogen outlet and an oxygen outlet, the power battery nitrogen protection system further comprises a battery box, a power battery is arranged in the battery box, and a nitrogen pipeline is connected between the battery box and the nitrogen outlet; and an oxygen pipeline for supplying oxygen to the passenger area is arranged on the oxygen outlet. Nitrogen enters the battery box, the concentration of oxygen in the battery box is controlled within the range away from combustion and explosion, and accidents such as combustion and explosion are prevented. Oxygen enters the passenger area, so that the oxygen concentration of the passenger area is improved, and the comfort of passengers is improved.

Description

technical field [0001] The invention relates to a nitrogen protection system for a power battery. Background technique [0002] With the large-scale application of lithium battery systems in new energy vehicles, fire accidents of new energy vehicles have occurred frequently this year. As the core component of new energy vehicles, the safety of batteries is becoming more and more important. The problem of battery safety protection has become increasingly prominent. When the power battery is under extreme conditions such as abuse or accident, problems such as electrolyte leakage, ignition and arcing will occur. [0003] The lithium iron phosphate battery does not produce oxygen after thermal runaway, but will produce flammable gases such as hydrogen, carbon monoxide, alkanes, hydrocarbons, benzene, etc. If the mixing ratio of flammable gas and oxygen in the battery box reaches a certain limit, and the battery When local arcing occurs to form electric sparks, combustion or exp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/60B60L58/10A62C3/16A62C31/00
CPCB60L50/60B60L58/10A62C3/16A62C31/00A62C99/0018Y02E60/10
Inventor 赵宏远荆俊雅刘亚洲成磊路丹花陈俊明
Owner ZHENGZHOU YUTONG BUS CO LTD