Why does electric car charge drum?

Why does electric car charge drum?

2022-03-31 10:52:32

I believe that many car owners will definitely encounter the phenomenon of battery bulge in the process of using electric vehicles. So what is the reason? How to prevent scientifically?
Now Xiaoxin has sorted out some possible factors and preventive measures for the battery bulge of electric vehicles. Let's see what kind of situation you belong to!

1、 Causes of battery bulging

(1) . the vent hole is blocked
If the vent hole on the battery filler cap is blocked or blocked, the gas generated when the charging time is too long or the charging voltage is too high will gradually accumulate, resulting in increasing pressure in the battery shell, and finally lead to battery bulging.

(2) . the battery charging current is too large or the charging time is too long
When the battery charging current is too large or the charging time is too long, the electrolyte temperature will increase rapidly and produce a large amount of gas, which will loosen and fall off the active substances on the battery plate, resulting in the bulging of the battery.

2、 Causes of battery bulging

(1) The battery plate is vulcanized
In the process of high current charging, the single cell voltage and electrolyte temperature will rise rapidly, and the bubbles will be produced early and violently, which is easy to cause the battery to swell.

(2) . the continuous starting motor time is too long
When starting the starting motor, the battery should provide a large current to the motor in a very short time, and the large starting current will inevitably cause severe chemical reaction in the battery and accompany the generation of gas. When the starting motor is used continuously for too long, it will aggravate the generation of gas, which increases the possibility of battery crack.

3、 Causes of battery bulging

(1) . the inner plate, lug and pole of the battery are not firmly welded with the bus bar
When the lug and pole of the inner plate of the battery are not firmly welded with the bus bar, if a large current is discharged, the welding joint will cause ignition and ablation due to too thin contact or poor contact, which will produce sparks and ignite the hydrogen and oxygen mixed gas produced by the battery, resulting in battery explosion.

(2) The viscosity of electrolyte is too high
If the viscosity of the electrolyte is large, it will easily lead to slow penetration into the pores of the electrode plate and increase the internal resistance. In this way, the voltage drop consumed on the internal resistance in the discharge will increase. This will cause the electrolyte temperature to rise rapidly and produce a large amount of gas, which will increase the gas pressure inside the battery and cause the battery to swell.

4、 Causes of battery bulging

(1) Too little electrolyte
As we all know, the battery will reduce the electrolyte after being used for a period of time. At this time, electrolyte or distilled water needs to be added. After the electrolyte is reduced, overcharge will lead to battery bulging and even explosion.

(2) . the charger is damaged
When the charger or the generator on the engine is damaged, its current or voltage may be large or small, which is easy to lead to violent reaction in the battery, resulting in a large amount of gas, which will lead to battery inflation.

5、 Preventive measures for battery bulge of electric vehicle:

(1) To avoid sparks during the use of the battery, it is necessary to install the battery firmly during the use, fasten the connection between the wire connector and the electric pile, and ensure the welding quality of the electrode plate group during overhaul.

(2) In order to ensure that the gas generated by the battery in the working process can overflow from the vent hole of the liquid filling port in time, so that the internal air pressure of the battery is not too high, the liquid filling cover of the battery must be tightened at ordinary times, and the vent hole must be dredged frequently.

(3) In order to avoid excessive battery discharge, the starter cannot be used continuously when starting the vehicle with the starter, especially when starting the vehicle at low temperature. When cold starting the vehicle, the vehicle must be preheated. The combination time of the starter shall not exceed 5-10S, and the vehicle must be started every 10-15s.

(4) When charging the battery, be sure to avoid excessive current or overcharge, and grasp the charging time.

To sum up, most of the battery inflation is caused by incorrect charging methods. To ensure a good mileage, in addition to maintaining good riding habits, pay more attention to the maintenance of the battery. When replacing the battery, try to choose the brand battery.

6、 Jiangxi Chunxing new energy Co., Ltd

Jiangxi Chunxing new energy Co., Ltd. is a group type and high-tech new energy battery production enterprise. The company covers an area of 780 Mu and has a total investment of 2.3 billion yuan. It is a major dispatching project in Jiangxi Province. The products cover environment-friendly lead-acid batteries in many fields such as electric moped batteries, UPS batteries, energy storage batteries and power vehicle batteries. It has three independent brands of "Changxin battery", "Mantingfang battery" and "myth battery". For many years, it has won the honorary titles of famous brand in China's lead-acid battery industry and Jiangxi famous brand products. The products are exported to Vietnam, Myanmar, Africa and other regions, and are deeply loved and favored by users at home and abroad.

Jiangxi Chunxing new energy Co., Ltd., formerly known as Jiangxi Changxin power supply Co., Ltd., has been deeply engaged in the lead-acid battery industry for many years. It is a national high-tech enterprise. It has been listed as China's excellent industrial enterprise in 2013 and the development and upgrading demonstration enterprise in Jiangxi Province in 2014. It was ranked among the top 11 in the national lead-acid battery industry in 2014 and 2015. It was one of the top 100 private enterprises in the province in 2016 and ranked 43rd among the top 100 private enterprises in Jiangxi Province in 2017, Jiangxi Province ranks 24th among the top 100 private enterprises in manufacturing industry and Yichun city ranks 7th among the top 100 private enterprises. In 2018, it was awarded as a well-known brand and five-star quality enterprise in China's lead-acid battery industry, and in 2019, it was awarded as "AAA quality credit enterprise" in China's lead-acid battery industry. The company is the drafting unit of the national standard for battery plate, the director unit of the national battery industry association and the vice president unit of the new energy chamber of Commerce of the all China Federation of industry and commerce.

In order to expand the upstream and downstream industrial chain, in 2021, Jiangxi Changxin power supply Co., Ltd. cooperated with Jiangsu xinchunxing renewable resources Co., Ltd., the largest renewable lead enterprise in China, and was strategically reorganized into Jiangxi Chunxing new energy Co., Ltd. The new company will invest in fully automated production lines represented by continuous casting and rolling and robot assembly, and vigorously develop new energy power battery projects. The project is divided into two phases, with a total investment of 2.3 billion yuan, an annual production capacity of 12 million KVAh, an estimated annual output value of 5 billion yuan and an annual profit and tax of 500 million yuan.