5 major faults and causes of electric vehicle batteries!

Electric bicycle batteries sometimes have some failures, such as: battery leakage, battery failure to charge, and battery deformation, etc. The author summarizes five common faults and causes of electric bicycle batteries. You can understand them: 　　1. Battery leakage If your electric bicycle battery leaks, it is generally caused by the following four places: 　　1, the upper cover and the bottom groove Sealing is not good or due to collisions, the sealing glue cracks and causes liquid leakage; 　　2, cap valve seepage acid leakage; 　　3, acid leakage at the terminal; 　　4, acid leakage in other parts.　　 Note: Battery leakage is a very serious problem. Leakage is very corrosive to electric vehicles and people, so everyone must pay attention to safety. 2. The battery cannot be charged. If you feel that the battery of your electric bicycle cannot be charged, first check whether the connection of the charging circuit is reliable, check whether the connection between the connection and the plug is intact, and carefully check whether the socket and plug are 'sparking' Arc phenomenon, wireless circuit damage and disconnection, etc.　　 If there is no problem, then check whether the charger is damaged and whether the charging parameters meet the requirements of national standards. If there is no problem, then the battery may be damaged. If it does not get better after the repair, a new battery needs to be replaced.　　3. Sulfation of battery plates 　　Polar plate sulfation is a common failure of batteries, and many battery failures are also caused by this failure. The main manifestations of the sulfation of the plate are: the voltage rises quickly during charging, gas is precipitated prematurely, and the temperature rises quickly; the voltage drops quickly during discharge and the capacity is small.　　 Fourth, the battery pack appears 'unbalanced' 　　 The balance of the series battery pack is a worldwide problem, and there will always be 'backward' batteries during use. The reasons are various, including production reasons, raw materials reasons and use reasons. V. Battery deformation According to professionals, the swelling and deformation of the battery is mainly due to the sharp increase in the pressure in the battery body of the electric vehicle. The reasons for this phenomenon are: 　　1. The valve pressure is too high or blocked. In general, Electric vehicle batteries will have a safety valve through which excessive pressure is released. However, there are individual electric vehicle batteries that cannot be released normally because of the poor safety valve, which causes the bulge to deform.　　2. The float charge voltage is too high, causing the temperature to rise too fast.　　 It is understood that the float charge voltage of the electric vehicle battery will be set within a reasonable range, which can avoid current impact. However, if the float voltage is set higher than the normal value, the temperature in the battery will rise rapidly, but the exhaust will not be timely. In this case, the battery will deform and bulge. 3. Overcharging leads to poor internal gas recombination. Charging is something that all users will do, but correct charging is not possible for all users. Although many users know how to charge, they don’t know how to charge correctly. It is precisely because of this. The reason is that the battery is overcharged or undercharged, and undercharged or overcharged will affect the battery. Especially if the battery is charged too much, it is very easy to cause the pressure in the battery to increase, which will lead to the deformation of the battery.　　 The above three points are the main reasons for the bulging and deformation of electric vehicle batteries, and the most fundamental reason is that the quality is not good. Therefore, when choosing batteries, try to choose high-quality, well-reputed brand batteries, such as batteries. The battery quality is very good, the service is also good, the sales, customer service, technical support, maintenance and other aspects are well established, which can provide consumers with better after-sales service.　　 How far an electric bicycle can travel every day depends on how well the electric bicycle battery is maintained. So when you use an electric car every day, you must keep the above 5 points in mind, and maintain your electric car well! Prev: How to buy an electric car battery?