1、 Relief valve pressure too high
In order to ensure safety, electric vehicle batteries will have a safety valve. When the pressure in the electric vehicle battery rises, the safety valve will open automatically. After all, the pressure will be released, so as to ensure the normal use of the battery. When the pressure in the battery rises, but the safety valve cannot be opened, there will be a bulge.
2、 Excessive charging current
Usually, the electric vehicle batteries produced by regular manufacturers have a certain charging current value, and the excessive voltage and charging current caused by various reasons can easily lead to too fast precipitation on the electrode plate, resulting in insufficient chemical reaction. At the same time, if the temperature in the battery rises rapidly and the exhaust is not timely, the bulge will naturally occur.
3、 Series overcharge
Some electric vehicle batteries are used in series, which can have more capacitance. When the series battery is overcharged, it will also lead to poor gas recombination in the battery, resulting in bulging.
4、 Unqualified battery
If the battery is not designed to avoid the chemical retention of the enterprise, there will be too much pressure in the body and the battery will be bulging.
The above four reasons are common for battery bulging of electric vehicles. In order to avoid battery bulging, in addition to mastering the reasons for battery bulging, two points should be paid attention to:
First, check the battery frequently
No matter how good the battery is, it can't stand the toss of use. In particular, many people don't pay special attention to maintenance when riding electric vehicles. Rugged roads, frequent sudden braking and excessive load will lead to battery damage. Regular battery inspection is not only to ensure the normal operation of the battery, but also to protect their personal safety, Avoid unexpected situations.
Second, choose brand products
The survey shows that 80% of Chinese people will habitually buy cheap products when shopping, while few cheap products can have high cost performance. Therefore, the service life is usually not very high, but the failure rate will be very high
The above is Jinan BMW specialty http://www.sdrunao.com Thank you for checking the information of our company in your busy schedule. If you want to know more, you are welcome to call for consultation!