Li-Ion Battery Capacity Level Gauge

SYSTEM

LI-ION BATTERY CAPACITY LEVEL GAUGE : System Description


SYSTEM DIAGRAM







DESCRIPTION

- LBC transmits a Li-ion battery capacity signal to VCM via EV system CAN communication.
- VCM transmits a Li-ion battery capacity signal to the combination meter via CAN communication.
- The combination meter indicates the Li-ion battery capacity to the Li-ion battery capacity level gauge according to the Li-ion battery capacity signal received via CAN communication.
NOTE:
- Li-ion battery capacity signal is a signal which requires the number of lighting segments of the Li-ion battery capacity level gauge. The number of lighting segments is judged by LBC, according to Li-ion battery capacity. When receiving a Li-ion battery capacity signal, the combination meter shows the number of lighting segments requested via Li-ion battery capacity signal on the Li-ion battery capacity level gauge.
- When gradual loss of capacity occurs in the Li-ion battery, the number of lighting segments of the Li-ion battery capacity level gauge decreases.

SIGNAL PATH







RELATIONSHIPS OF LI-ION BATTERY CAPACITY LEVEL GAUGE AND LI-ION BATTERY AVAIL-


ABLE CHARGE GAUGE







LI-ION BATTERY CAPACITY LEVEL GAUGE INDICATION CHANGE CAUSED BY GRADUAL CA-


PACITY LOSS







LI-ION BATTERY CAPACITY LEVEL GAUGE INDICATION CHANGE CAUSED BY TEMPERATURE


CHANGE