Gasgoo Awards 2022 applicant: Integrated Cell Management Unit from Suzhou Hengmei Electron Technology Inc.

For the Gasgoo Awards 2022, Integrated Cell Management Unit from Suzhou Hengmei Electron Technology Inc. has applied for the Top 100 Players of China's New Automotive Supply Chain. 

Photo credit: Suzhou Hengmei Electron Technology Inc.

Product: Integrated Cell Management Unit

Description

● support voltage detection

● support temperature detection

● support SPI & Daisy chain communication

● support balancing (On-chip&External)

● support cell impedance detection

● support up to 250 cells in series cell information sampling

Photo credit: Suzhou Hengmei Electron Technology Inc.

Unique advantages

● Cost advantage

● Platform design

● Thermal runaway warning

● Shorten charging time

● Echelon utilization of battery cells

Application

● Cells end of line filtering equipment

● UPS power supply

● ESS

● New energy vehicle battery system

Prospect

With the advancement of macro policies, the demand in the automotive industry and energy storage fields is growing rapidly, and the safety of batteries is becoming more and more important.

From a technical point of view, new energy vehicles and energy storage systems are similar in terms of electronic monitoring and battery management: both involve voltage and temperature monitoring to ensure the safe operation of the battery; both are related to balancing to ensure that each cell power is the same. In order to achieve faster charging, obtain a more accurate current state of health of the battery cells, and improve the safety of the battery cells, it is necessary to innovatively design the battery management system and BMS equipment, so that the battery system developers can understand the deep state of the battery. , optimize the use of batteries, increase the power limit of batteries, and predict safety risks early. Therefore, developers are more and more eager for the function of EIS (Electrochemical Impedance Spectroscopy, EIS, electrochemical impedance spectroscopy) measurement.

In the prior art, in order to ensure the safe operation of the battery, it cannot operate at the maximum charge and discharge parameters during charging and discharging, because the current BMS control system does not support EIS (Electrochemical Impedance Spectroscopy, referred to as EIS, electrochemical impedance spectroscopy). Therefore, it is impossible to apply the known EIS (Electrochemical Impedance Spectroscopy, EIS, electrochemical impedance spectroscopy) model to the actual algorithm when doing the algorithm, and it is impossible to accurately estimate the health state of the cell, as well as making an electrical early warning of thermal runaway.

And our product: ICMU, supports voltage detection, temperature detection and EIS measurement of battery cells, and uploads the measured data to the main control center through daisy-chain communication. According to the collected voltage, temperature and EIS data, the main control center can make up for the lack of functions of the existing BMS system.

Therefore, in the next time, the BMS system supporting the EIS function will definitely be the leader in the market industry.