![](https://www.sawafuji.co.jp/wp/wp-content/themes/sawafuji/images/technology/cmu/cmu-1.jpg)
![](https://www.sawafuji.co.jp/wp/wp-content/themes/sawafuji/images/technology/cmu/cmu-1.jpg)
A unit that monitors lithium-ion battery cells
Functions * Precisely monitors multiple batteries (voltage, tempperature) and sends data to higher ECU. * Corrects voltage fluctuations of each battery by order of higher ECU
![](https://www.sawafuji.co.jp/wp/wp-content/themes/sawafuji/images/technology/cmu/cmu-graph-1-en.png)
Characteristics * Capable of precision voltage detection in mV order * Multiple CMUs can be connected with minimum wiring, allowing for monitoring multiple batteries through inter-communication * A circuit design technology that allows for stably monitoring batteries in any environment (high/low temperatures, noise)
![](https://www.sawafuji.co.jp/wp/wp-content/themes/sawafuji/images/technology/cmu/cmu-graph-2-en.png)
Characteristics
mV Order detection precision
Minimized harness due to data transceiver technology among multiple CMUs using daisy chains
An insulation circuit design that works under high voltage
A circuit design that does not get influenced by noise even in a high current environment
![](https://www.sawafuji.co.jp/wp/wp-content/themes/sawafuji/images/technology/cmu/cmu-graph-3-en.png)