sigma

Lithium battery management system

Overview

The battery management system (BMS) solution developed based on MS51 is the link between the battery and the user. It is mainly to improve
the utilization rate of the battery, prevent the battery from overcharging and over-discharging, and accurately control each battery to provide customers with The rich
communication interfaces facilitate customers to do second development on this basis and speed up the time to market of customer products.

Solution features
- High-precision battery voltage measurement from 5 to 10 cells
- Discharge current measurement
- Overcharge and over-discharge protection
- Temperature detection
- Battery balancing
- Short circuit protection

MCU Features
MS51 (8-bit, 1T 8051)
- Supports up to 24 MHz main frequency
- Wide voltage operating range: 2.4V ~ 5.5V
- Industrial operating temperature: -40°C to 105°C
- Built-in 12-bit ADC, up to 15 channels
- Strong sink current drive capability
- High anti-interference capability: 8 kV ESD vs. 4.4 kV EFT
- Power down mode typical power consumption 6 μA

Blockdiagram

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Update:2025-06-21 00:18:25

Device voltage drop problem
[i=s] This post was last edited by Kuaibensi at 2017-5-17 11:47 [/i] 1. As described in the attachment, BAT3.6 is the same power supply. VCC2 is obtained through the VCC2 circuit, and VDD is obtained
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