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Battery Control System
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Overview
A battery control system is used for managing remaining battery voltage and control of battery charging. The voltages of the individual cells are monitored and the balance controlled by a battery cell monitor MCU and lithium-ion battery cell monitor ICs. Battery management MCUs provided by Renesas can perform management of remaining battery voltage and battery charge control. In addition to battery cell monitor MCUs, Renesas supplies analog and power devices suitable for battery control systems.
System Block Diagram
Battery Control System
Recommended Products
| MCU/Soc | Recommended Products | ROM [Byte] | RAM [Byte] | Operating Frequency [MHz] | Package [Pin] | Features |
|---|---|---|---|---|---|---|
| Main MCU | V850E2/Fx4 | 512 K | 48 K | 80 | 80 | 12 bit ADC、CAN |
| SH72A0/A2 | 256 K- 512 K | 32 K- 64 K | 80-100 | 64-100 | ||
| Cell Monitor MCU | RL78/F12 | 8 K- 64 K | 0. 5K- 4K | 32 | 20-64 | 4 K-Data Flash, 10 bit ADC, LIN, Ta = 150 support |
| 78K0R/Fx3 | 24 K- 256 K | 1.5 K- 16 K | 24 | 30-100 | 16 K-Data Flash, PWM output, 10bit ADC, CAN, | |
| R8C/3x | 16 K- 128 K | 1.5 K- 10 K | 20 | 20-80 | 4 K-Data Flash, 10 bit ADC, CAN, LIN, LQFP | |
| Analog/Power Device | Recommended Product | Features | ||||
| LiBCM-IC | R2Axxxxx ** | High-precision detection: ±5mV, high-speed measurement: 5ms/12 cells, passive cell balance (on-chip FETs) | ||||
| CAN line ESD protection | NNCD-ST Series | Bidirectional ESD protection | ||||
| ESD protection | NNCD-DA Series(200mW) RD-FS Series(1W) | Surge protection | ||||
**: In Planning Stage
