With the popularization of new energy concepts, new energy vehicles have gradually entered thousands of households. As a new car choice for ordinary people, new energy vehicles have begun to invade the market that originally belonged to traditional fuel vehicles, as the largest new energy vehicle. In the market, Chinese enterprises rely on new energy vehicles to stand on the same starting line with foreign companies for the first time, and new technologies and processes that are constantly emerging have enabled China's new energy auto industry to have more sufficient enthusiasm to look to the world and focus on the future.
The core of the traditional fuel vehicle is naturally inseparable from the so-called "three big pieces": the engine, the chassis and the gearbox. In this "three big pieces", the Chinese automobile manufacturers behind the German technology are behind the German and Japanese companies. consensus. In the new energy electric vehicles, there are also commonly known as “three big piecesâ€: batteries, motors and electronic controls. Since new energy electric vehicles are still relatively new in the world, the start-ups of enterprises in various countries are not much different. Let Chinese enterprises have the same conditions as foreign companies in the multi-purpose power driving tools that the automobile was invented in 1886. This article focuses on the electronic control in the "three major pieces" of new energy electric vehicles (commonly known as battery management system BMS).
The biggest difference between new energy electric vehicles and traditional fuel vehicles is that they use power batteries as the power drive. As an important link between battery packs, vehicle systems and motors, the importance of battery management system BMS is self-evident. Many new ones at home and abroad. Energy car companies regard the battery management system as the core technology of the enterprise. The most famous example is Tesla, which is well known to all. Tesla's electric vehicle "three big pieces", the battery comes from Panasonic, the motor comes from Taiwanese suppliers, and only the battery management system is the core technology independently developed by Tesla. The core intellectual property rights applied by Tesla during 2008-2015 are mostly related to the battery management system. This shows that the battery management system is new energy. The importance of the car. Domestically, the R&D and production of battery management system BMS is mainly concentrated in these three types of enterprises:
1. New energy vehicle manufacturer, representative enterprise: BYD
2, battery PACK manufacturers, on behalf of the company: Waterma, Pride
3, professional BMS manufacturers, on behalf of enterprises: Huizhou billion, Shenzhen Guoxin Power
What is the role of the battery management system BMS?
The battery management system BMS is a new product born in this century. Because the electrochemical reaction is difficult to control and the performance change of the material in this process is elusive, it is necessary for such a housekeeper to supervise and adjust the behavior of limiting the battery pack. Safe to use, its main functions are:
1. Accurately estimate the state of charge of the power battery pack
Accurately estimate the state of charge (SOC) of the power battery pack, that is, the remaining battery power, to ensure that the SOC is maintained within a reasonable range, to prevent damage to the battery due to overcharge or overdischarge, thereby predicting the hybrid power at any time. How much energy is left in the car's energy storage battery or the state of charge of the energy storage battery.
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