Production introduction of AP21S004 Smart BMS
DTP-AP21S004 is a software BMS solution specifically designed for 8-21 series lithium battery packs. AP21S004 can automatically recognize 8~21 series battery packs, making it convenient for customers to connect. At the same time, ap21s004 bms is equipped with three communication port: UART, RS485, and CAN, which can be connected to mobile phones through Bluetooth or to computers through the upper computer. In addition, ap21s004 bms is equipped with one built-in NTC and two external NTCs. This smart BMS is suitable for electric bicycles, electric motorcycles, and low-speed four-wheel vehicles. The product adopts a front-end acquisition chip and MCU architecture, and some protection parameters can be flexibly adjusted through the upper computer according to customer needs.
Basic Parameter of AP21S004 Smart BMS – 8S 9S 10S 11S 12S 13S 14S 15S 16S 17S 18S 19S 20S 21S LiFePO4 BMS with UART RS485 CAN
Basic Parameter of AP21S004 Smart BMS – 8S-21S Li-ion BMS with UART RS485 CAN
| Category | Specification |
|---|---|
| Discharge Current | 200A |
| Overcurrent Protection | 230A (delay 20s), 440A (delay 320ms) |
| Main Circuit Resistance | ≤ 10mΩ |
| Charging Voltage | Iron lithium battery group string x 3.65V |
| Single Cell Overvoltage Protection | |
| Detection voltage | LFP 3.65+0.05V |
| Delay | 1000-3000ms |
| Balanced Voltage | |
| Turn on: | LFP ≥3.4V, |
| Release: | LFP < 3.4V, |
| Balance Current | 50 - 100mA |
| Single Cell Over-discharge Protection | |
| Detection voltage | LFP 2.5±0.1V |
| Delay | 1000-3000ms |
| Recovery | LFP 3.0±0.1V |
| Charging Overcurrent Protection | |
| protection Value | 210-250A (5-15s) |
| Release Condition | Recovery after 32s delay |
| OverCurrent timeout | 5-15s |
| Short Circuit Protection | |
| Trigger | External load short circuit |
| Detection | 200-800μs |
| Release | Disconnect load |
| Temperature Control Protection | |
| Over-temperature | 75°±20° |
| Under-temperature | 60°±5° |
| Self-consumption | |
| Working temperature | -30°C to +10°C |
| Operating power consumption | ≤25mA |
| Sleep power consumption | ≤300μA |
| Working Voltage Range | 9.2V to 15.0V |
| Short Circuit Description | Maximum current: 3000A |
Functions of AP21S001 Smart BMS – LiFePO4 BMS 8S 12S 16S 20S 100A 120A 150A 200A
| Function | Configuration | Function | Configuration |
|---|---|---|---|
| Number of Strings Supported | 8~21S | RS485 Communication | Optional |
| Continuous Current | 80~200A | One Wire Communication | Not Supported |
| NTC number | 1 built-in,2 external | CAN Communication | Optional |
| Balance Function | Passive | RS232 communication | Not Supported |
| UART Port(Non-isolated) | Standard Option | UART Port(Isolated) | Not Supported |
| Switch function | Optional | Heating Function | Not Supported |
| Charging Current Limit | Not Supported | Module of Bluetooth | Optional |
| Battery Packs in Parallel | Not Supported | Battery Packs in Series | Optional |
| History storage | Not Supported | Secondary Protection | Not Supported |
| Previous Discharge | Not Supported | LCD Display | Optional |
| Buzzer | Not Supported | Interface of LED indicator | Not Supported |
| Interface of external EDI | Not Supported | Interface of GPS | Optional |
