PCB News - New energy vehicle battery management system (BMS) composition

New energy vehicle battery management system (BMS) composition
The Internet era has broken the traditional marketing model, and a large number of resources have been gathered together to the greatest extent through the Internet, which has also accelerated the development speed of FPC flexible circuit boards, and then as the development speed accelerates, environmental problems will continue to appear in PCB factories. In front of him. However, with the development of the Internet, environmental protection and environmental informatization have also been developed by leaps and bounds. Environmental information data centers and green electronic procurement are gradually being applied to the actual production and operation fields. From this point of view, the environmental protection problems of PCB factories can be solved from the following two points.
The battery management system (BMS) is the link between the battery and the user, and the main target is the secondary battery. Secondary batteries have the following shortcomings, such as low energy storage, short life, serial and parallel use problems, safety in use, and difficulty in battery power estimation. The performance of the battery is very complicated, and the characteristics of different types of batteries are also very different. The battery management system (BMS) is mainly to improve the utilization rate of the battery, prevent the battery from being overcharged and overdischarged, extend the service life of the battery, and monitor the status of the battery. With the development of the battery management system, other functions will be added.

The battery management system is a key component of electric vehicles and hybrid vehicles. In order to ensure the safe and reliable operation of the battery, the battery management system needs to have the following three functions:

1. Accurately estimate the state of charge of the power battery pack

2. Dynamically monitor the working status of the power battery pack

3. Balance between single cells

In the future, electric vehicles will use lithium batteries as the main power source. The main reason is that lithium batteries have the advantage of high energy density, so their performance is relatively stable. However, the quality of lithium batteries is not easy to grasp when mass production of lithium batteries. There are slight differences in the power of battery cells when they leave the factory. With operating environment, aging and other factors, the inconsistency between batteries will become more obvious, and battery efficiency and life will also deteriorate. In addition, overcharging or overdischarging may lead to safety problems such as fire and combustion in severe cases. Therefore, the battery management system (BMS) can accurately measure the usage of the battery pack, protect the battery from excessive charging and discharging, balance the power of each battery in the battery pack, and analyze and calculate the power of the battery pack and convert it into driving. Understand the endurance information to ensure that the power battery can operate safely. Compared with traditional vehicles, hybrid vehicles and electric vehicles have obvious advantages in energy saving and emission reduction, and there is room for improvement in battery management, charging speed, etc.

New energy vehicles are divided into pure electric vehicles and hybrid vehicles according to their power sources, namely EVs and HEVs. Due to the use of electric drive, new energy vehicles are different from the traditional internal combustion engine structure. New energy vehicle electronic technology generally includes battery management system BMS, on-board charger, inverter, vehicle controller VCU/HCU, pedestrian warning system, DC/DC, etc. As the core components of new energy vehicles: battery management, inverter (motor control) and vehicle controllers, they must have extremely high safety and reliability.
Shenzhen Electronics Co., Ltd. passed the IATF16949 audit in 2018. We provide a wealth of automotive electronics solutions, from high-performance, high-security microcontrollers to analog front-ends to system basis chips, from motor control (BLDC/PMSM) to battery management to For automobile network management, we all have corresponding solutions. Welcome your inquiry. iPCB has passed ISO9001:2008, ISO14001, UL, CQC and other quality management system certifications, produces standardized and qualified PCB products, masters complex process technology, and uses professional equipment such as AOI and Flying Probe to control production and X-ray inspection machines. Finally, we will use double FQC inspection of appearance to ensure shipment under IPC II standard or IPC III standard.