Shanghai Belling: Recently Launched the BL1051 Series of High-Precision Battery Management Analog Front-Ends (BMSAFE) for 5–17 Cells
Shanghai Belling’s latest launch 5~17 High-Precision Battery Management Analog Front End (BMSAFE)BL1051 This product series features industry-leading precision in voltage, current, and temperature monitoring as its core advantage, integrates comprehensive safety protection mechanisms, and supports both proprietary algorithms and host-controlled cell balancing. It is widely applicable to electric two-wheelers, energy storage systems, and outdoor power tools, among other applications. 
Product Features
5~17 Series battery stacking structure (85Vmax)
Two independents 16-bit ADC Measurement accuracy of cell voltage : plus or minus 3 mV @ 25 ° C . Zero-point drift of current : plus or minus 10 mA @ 1 m Ω Temperature Measurement Accuracy : scholar 1 °C°C @25 degrees Celsius
50Hz Power-Frequency Suppression Current Filter
Comprehensive safety protection mechanisms support either autonomous algorithms or host-controlled cell balancing. 400KHz12C/1MbpsSPI Communication Interface 10 A multi-function pin ( Thermistor / Digital output, etc. ) Integrates two independent channels 50mA Output programmable LDO Supports multiple low-power modes, including an ultra-low standby mode. (<2 mu A) Built-in EEPROM Allows users to repeatedly configure system settings, protection parameters, and calibration settings.
Application Scenarios
Electric two-wheeled vehicle
Home Energy Storage
Outdoor Power Tools
Embodied Intelligence
Product Advantages
BL1051 Adopt dual 16-bit Σ-AADC The architecture supports synchronous voltage and current sampling, as well as out-of-order power-up and power-down sequences and hot-swapping. It delivers industry-leading accuracy in voltage, current, and temperature measurement. Notably, it exhibits exceptional zero-point drift performance across the full temperature range for current measurements. This device is equipped with 50Hz A power-frequency suppression current filter is employed, and board-level calibration memory is provided for the customer to enhance design and application flexibility.
Complete Chip Solution
Shanghai Belling BMS AFE In the solution, it is adopted that BL1051 As the core AFE , in conjunction with Shanghai Belling’s low-power consumption LDO (ME6268/ME6261) 、 SGT MOSFET (BLPO2N11 / BLP04N11) , isolation RS485 Communication Interface (BL7385) EEPROM (BL24Cxx Series ) and other products, to build integrated solutions that ensure the end-user safety of lithium batteries across a wide range of applications.
Evaluation Kit
BL1051 The evaluation kit includes complete hardware and software, enabling users to read from and write to chip registers and configure voltage. / Electric current / Temperature accuracy measurement and calibration, cell balancing, safety protection, and FET Conduct a series of comprehensive functional and performance validations, including drive testing, to accelerate product development and deployment.
BL1051 The evaluation kit supports connecting external cell voltages via the sampling port, or it can be 200Q A resistor-divider battery simulator composed of series resistors provides sampled voltage inputs and allows flexible configuration of the number of battery strings. Onboard 1 mΩ Current-sampling resistor and NTC The thermistor supports evaluation of current and temperature sampling functions. Through its built-in MCU Communication port via Mini_USB The port can be associated with PC Connect and, in conjunction with the software, achieve AFE Communication and functional verification of chips.
Host software parameter scan page, which updates cell status parameters, register parameters, protection flag bits, and operating mode in real time, FET status, etc. Through the host computer software “ Protect parameters ”、 “ System & Equilibrium parameter ”、 “ Interrupt &GPI0 Parameters ” The page enables configuration of system, protection, and balancing functions, and allows for rapid calibration of voltage, current, and temperature via the calibration page.
Product Model
(Source: Shanghai Belling official website)
Hot News
2026 MCU Industry Outlook: Market Expansion, Technological Upgrades, and Supply Chain Restructuring
In 2026, the global microcontroller (MCU) industry is expected to maintain steady growth, driven by robust demand across multiple sectors, including automotive electrification, industrial automation, and IoT and AI infrastructure. At the same time, supply-chain constraints and successive price hikes will persist throughout the year. International industry leaders are accelerating their localization strategies, while domestic manufacturers continue to make breakthroughs in high-end offerings and product differentiation.