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BMS applications and overview
In the "electric" era, the term new energy is not unfamiliar, such as electric bicycles, new energy vehicles, home energy storage, power tools, scooters and other applications are involved in the field of new energy, and most of the new energy is inseparable from the dependence on batteries.
At present, most of the batteries on the market have problems such as capacity freezing at low temperature, safety at high temperature, energy waste caused by the wooden barrel effect when multi-use, and battery damage when over-voltage, so in order to ensure that people fully use batteries on the basis of safety, Battery Management System (BMS) becomes an indispensable part of it.
The main functions of a typical BMS include the following:
01
Information collection
Information collection mainly includes battery voltage, temperature, charging and discharging current;
02
Charge and discharge function
Intelligent charge and discharge control, charge and discharge protection under over-discharge, over-charge, over-current and over-temperature conditions;
03
Information monitoring
Real-time monitoring of remaining capacity (SOC), service life (SOH), etc.
04
Communication function
Feedback the information collected by the battery pack and the status of the battery to the control center;
05
Protection function
Trigger short circuit protection function in case of short circuit of charge and discharge;
06
Equalizing function
Active and passive balancing to improve the consistency between individual batteries in the battery pack.
DXY-BMG1660-H0A00 Scheme design
Xy-bmg1660-h0a00 is the same port BMS based on GD/CW MCU, AFE, Mapson/Sunyang NMOSFET design, with basic information collection, charge and discharge protection, SOC calculation, RS485 communication, parameter setting and other functions. It can be used in portable energy storage, two-wheeled electric vehicles, power tools and other products, compatible with product applications within 16S, the design principle is shown in Figure 1, and the physical picture is shown in Figure 2.
Figure 1 Schematic block diagram
Figure 2 Real picture
Main features of DHXY-BMG1660-H0A00
Highly integrated anti-jamming analog front end | High speed low power ARM class CPU |
High precision voltage detection (≤±10mV) | High precision current detection (≤3%@FS) |
High precision SOC estimation (up to 5%) | Charge and discharge the same port, continuous discharge current 60A |
Multichannel temperature detection | 1 channel digital input /1 channel output control |
Multiple parameter Settings adjustment | Intelligent charge and discharge control |
Support balancing function | Precharge and discharge function |
Multilevel alarm function | Short-circuit protection |
LED status indicator function | LED remaining power indicator function |
RS-485 isolates communication | CAN_bus isolates communication |
Bluetooth communication (optional) | |
Has a variety of sleep and wake up modes | Low power consumption, running power consumption (≤10mA), sleep power consumption 30uA |
Typical application of DHXY-BMG1660-H0A00
1）E-bike Electric bike
2）Power supply for tower base station
3）Portable energy storage
4）Power tool
5）Scooter
