We know that the battery is particularly affected by the ambient temperature when charging and discharging, for example, the lithium ion battery is charged in a environment below 5 perturbations, the battery charger is full, and the electricity is transferred to the 25 perturbed environment. The charger indicates that the battery is not sufficient and the charging indication is indicated. It is about 60% to 70 percent, and the battery of electric cars is particularly affected by the ambient temperature. As people say in the summer, the electric car is "a hundred times", and the electric car in winter is like "dozing", a long time charging battery in winter. The pond is particularly clear. People feel the most direct. It is impossible to use battery maintenance technology. Why? Through a large number of research data from all over the world, it is shown that over 95% of the battery poles will have vulcanization after the summer as the standard electrolysis battery, although many people have developed a number of positive and negative pulses and Wen Kongzhi charger to make up for the deficiency in the charger. But because of price and other factors, it can not be accepted by ordinary users. Second, it is to increase the concentration of the electrolyte so that the battery can improve the activity of the cathode and yang plate during the winter use, which is obvious when the battery is discharged. If the battery is charged with the original charger, the battery capacity is greatly reduced and the battery is badly charged when it is serious, which makes the battery scrap ahead of time and increase. The cost of people's use.

These two methods do not fundamentally solve the battery's environment temperature when charging and discharging, while the patent "a winter battery protection load" (patent number ZL200720146787.8) is to keep the battery properly suitable for insulation and auxiliary heating of the battery. In the temperature environment, this protection does not need to replace the expensive positive and negative pulse charger, and does not need to increase the concentration of electrolysis to stimulate the active substance in the battery to shorten the battery life. It only creates a good small Fan Weiwen environment for the battery, which makes the battery in winter. The working state has reached the summer level, thus saving a large amount of cost for the users of electric vehicles in disguise. Its structure is simple and easy to install. It can make a large number of electric vehicle repairmen easy to install and improve the good economic benefits. At the same time, it also brings many consumers to electric vehicle manufacturers with the patent technology. It is convenient for consumers to dispel consumers' shadow consumption caused by the disadvantages of electric vehicles in winter.