The BS-18M Series Multi-Channel Battery and Charger Simulator
Description
The BS-18M series multi-channel battery and charger simulator consists of two main unit models. Model no. AL-BS-18M-001 can host up to 18 battery simulator boards, and model no. AL-BS-18M-002 can host up 16 battery simulator boards + 2 temperature simulator boards (4-channel per temperature simulator board). The simulators in this series are programmable and can meet the needs of BMS (Battery Management System) battery simulation and testing of PCM (Protection Circuit Module) battery protection boards. The simulators are designed with a standard 19-inch 2U height, suitable for system integration testing or desktop use. All the channels are isolated from each other, facilitating multi-channel series connection. It boasts ultra-fast transient response capabilities and utilizes unique variable output resistance technology. Its input-output characteristics can accurately simulate the real response of batteries. Additionally, it can monitor the power consumption of the devices under test (DUT) by measuring DC current. The simulators can act as stand-alone programmable DC power supplies and/or electronic loads for test stations, experiment laboratories, and research organizations.
BS-18M Series Front View
Model AL-BS-18M-001 Back View
Model AL-BS-18M-002 Back ViewApplication Areas 
- Testing of battery management systems (BMS) for power, energy storage BMS, PCM protection boards, and other battery management system applications.
- Battery emulation, charger emulation, battery cell charge and discharge, battery pack balancing and maintenance, etc.
- High-precision bidirectional power supply applications, testing of idle current and power consumption in electrified products, etc.
Main Features
Modular design for easy expansion.
Model no. AL-BS-18M-001 and model no. AL-BS-18M-002 are designed with a standard 19-inch 2U height and features a touchscreen interface, allowing both desktop and integrated testing system setups in standard test cabinets. They support series connection simulation of multi-cell battery packs across channels, and multiple simulators can be combined to form larger battery matrices. A single unit can simulate a battery module, and AFE testing can be completed on a single machine.
Various board options can be combined to satisfy different testing requirements.
Model no. AL-BS-18M-001 can host up to 18 battery simulator boards, and model no. AL-BS-18M-002 can host up 16 battery simulator boards + 2 temperature simulator boards (4-channel per temperature simulator board). Model no. AL-BS-18M-002 can provide 16 channels for cell emulation and 8 channels for NTC thermistor resistance simulation. Various boards with different specifications can be combined in the channels. Optional high-precision reference voltage source boards are available for current calibration. Channels are isolated from each other, ensuring testing and outputting does not interfere with each other.
Model AL-BS-18M-001 18 battery simulation boards
Model AL-BS-18M-002 16 battery simulation boards + 2 temperature simulation boards
HD color touchscreen operation
High-performance color touchscreen operation with a main screen displaying 18 channels.
Four-wire connection method to eliminate resistance from remote measurement lead
Using a four-wire connection method in which two lines are used for outputting voltage, and the other two directly measuring the voltage of the device under test. By measuring the lines through the SENSE terminal, the voltage drop caused by lead resistance between the battery simulator and the DUT can be eliminated.
Battery characteristic simulation
Real battery simulation, automatic switching between charging and discharging states, internal resistance simulation, suitable for conducting charge and discharge tests on various types of batteries. It can also simulate the charge and discharge characteristics of batteries to assist in other testing tasks. This instrument serves multiple purposes, streamline testing equipment, and optimizes testing processes.
Accurate testing of leakage currents and idle currents
The current feedback on the main units have a maximum resolution of 100nA, with current accuracy of 0.1%. They can provide the precision required to monitor leakage and idle currents in today's and future battery-powered products during sleep modes.
Various communication interfaces for instruments and equipment
The standard models come with LAN and RS232 communication ports.
High-performance color touchscreen operation with a main screen displaying 18 channels.
Four-wire connection method to eliminate resistance from remote measurement lead
Using a four-wire connection method in which two lines are used for outputting voltage, and the other two directly measuring the voltage of the device under test. By measuring the lines through the SENSE terminal, the voltage drop caused by lead resistance between the battery simulator and the DUT can be eliminated.
Battery characteristic simulation
Real battery simulation, automatic switching between charging and discharging states, internal resistance simulation, suitable for conducting charge and discharge tests on various types of batteries. It can also simulate the charge and discharge characteristics of batteries to assist in other testing tasks. This instrument serves multiple purposes, streamline testing equipment, and optimizes testing processes.
Accurate testing of leakage currents and idle currents
The current feedback on the main units have a maximum resolution of 100nA, with current accuracy of 0.1%. They can provide the precision required to monitor leakage and idle currents in today's and future battery-powered products during sleep modes.
Various communication interfaces for instruments and equipment
The standard models come with LAN and RS232 communication ports.
Battery Cell Simulation Board Models Compatible With The BS-18M Series
| Board Model no. | Voltage | Current | Power | Accuracy | Polarity | Data Sheet |
| AL-BS-18B-101 |
0 - 6V | 0 - 1A | 6W | ±(0.01%+0.6mV) | Unidirectional |  |
| AL-BS-18B-102 |
0 - 6V | 0 - 3A | 15W | ±(0.01%+0.6mV) | Unidirectional | |
| AL-BS-18B-103 |
0 - 6V | -1 - 1A | 6W | ±(0.01%+0.6mV) | Bidirectional | |
| AL-BS-18B-104 |
0 - 6V | -3 - 3A | 15W | ±(0.01%+0.6mV) | Bidirectional | |
| AL-BS-18B-105 |
0 - 6V | -1 - 1A | 6W | ±(0.005%+0.3mV) | Bidirectional | |
| AL-BS-18B-106 | 0 - 6V | -3 - 3A | 15W | ±(0.005%+0.3mV) | Bidirectional | |
| AL-BS-18B-107 | 0 - 6V | -3 - 3A | 15W | ±(0.002%+0.1mV) | Bidirectional | |
| AL-BS-18B-108 |
-6 - 6V | -1 - 1A | 6W | ±(0.005%+0.3mV) | 4 Quadrants | |
| AL-BS-18B-109 | 0 - 1V | -1 - 1A | 1W | ±(0.005%+0.05mV) | Bidirectional |
Temperature Simulation Board Models Compatible With Model AL-BS-18M-002
| Board Model no. | Resistance | Step Size | Channel/ Power |
Accuracy | Remark | Data Sheet |
| AL-BS-18T-001 | 0 - 10MΩ | 10Ω | 4 Channel per 0.25W |
±0.10% | other resistor specifications are customizable | |
| AL-BS-18T-002 | 100 - 1MΩ | 100Ω | 4 Channel per 0.25W |
±0.10% | other resistor specifications are customizable | |
| AL-BS-18T-003 | 1K - 1MΩ | 1kΩ | 4 Channel per 0.25W |
±0.10% | other resistor specifications are customizable |
The BS-18M series multi-channel battery and charger simulator is applicable in BMS testing. It is capable of dynamically simulating individual/cumulative voltage conditions or standard charge-discharge curves of batteries. It can simulate the battery pack voltage of series-connected battery modules, with each cell's voltage varying between 0-6V. This includes setting conditions such as Vcell Balance, OVP (Over Voltage Protection), UVP (Under Voltage Protection), reverse wake-up, etc.
The virtual battery receives commands from the computer host to adjust its output voltage independently, completing virtual charge and discharge tests of battery voltage. This is used to test the battery balancing function of BMS. The current for each cell can vary up to -3A to 3A, enabling detection of Vcell Balance function, with a set resolution of 1mA.
The simulated battery module can read back the voltage and current of each channel, allowing comparison with the test communication data of the BMS under test. This helps determine the accuracy of BMS voltage detection, overcharge detection, under-discharge detection, and the accuracy of individual cell voltage abnormality/recovery signal response. The unit is designed with modularization, allowing expansion by adding corresponding module units as needed.
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