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With the increasing development of social living standards, battery packs (Battery Pack) have been fully presented in people's daily lives. Battery packs are indispensable in mobile phones, smart wear, laptops, electric toys, sweeping robots, electric non-motor vehicles, electric tools, drones, robots, mobile power supplies, portable energy storage, and new energy vehicle lamp terminals. The battery management system (BMS) is a key system that determines the performance and efficiency of the battery pack. Its main operation is to collect, process and store the key information in the operation of the battery pack in real time, and then exchange information with external equipment. At the same time, it is necessary to solve the problems caused by the safety, availability, working life and discharge of each group of units in the battery pack, and the orderly and correct fast charging of the battery materials.
BMS
Battery management system (Battery Management System) is a system that can monitor and manage lithium batteries in real time. Through real-time monitoring of battery physical parameters, battery state estimation. Online diagnosis and early warning, charge, discharge and pre-charge control, balance management and thermal management to achieve battery protection and improve battery life.
Why do you need BMS?
1. Battery safety requirements: If over-discharge occurs, it will cause permanent damage to the battery, and if the battery is overheated or overshoot, it will cause the battery to rupture or even explode;
2. Functional requirements: In the process of using lithium batteries, it is necessary to understand the capacity of the battery in real time, and the service life of the battery needs to be improved through the balance of BMS. BMS can control the working environment temperature of the battery to maximize the performance of the battery.
The medium and low voltage power MOSFETs provided are widely used in the battery management system (BMS) in the above terminals, and have the following characteristics and unique advantages:
1, the unit cell size is less than 1µm, the chip area is minimal, and the integration of the device is improved.
2. Low internal resistance and gate charge, excellent device conduction and switching loss
3, the threshold voltage consistency is good, the production of sub-file processing to support multi-tube parallel applications.
4, UIS avalanche breakdown capacity is high, 100 of the final screening in production
5. The package has low thermal resistance and strong continuous loading capacity of high current
According to different voltage and packaging requirements, 30~150V Trench & SGT MOSFETs are provided, which is suitable for battery management system (BMS). Users can select the appropriate material according to the specific motor power and phase current.
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