Chroma 87001 Battery Cell Simulator is a high precision, programmable, and bidirectional DC power source with both voltage source and current source functions. In addition, the model can be used as a multi-channel DC power supply or an electronic load as well. A single simulator has 16 channels and each of them can set voltage and current respectively via Chroma software. The 87001 Battery Cell Simulator can be used in place of lithium-ion batteries to provide a reliable and safe testing environment. The equipped battery management unit (BMU) and its cell supervisor circuit (CSC) subsystem can test the battery cells used in electric vehicles and energy storage batteries.
The simulator has voltage isolated channels that can simulate a 480-cell battery pack (240S2P, Voltage <1,000V) connected in series. It is used to imitate the power characteristics when charging and discharging the battery cell energy. This high-precision battery cell simulator with flexible voltage source and current load regulation has voltage and current measurement capabilities.
Key Features
16 independent, isolated battery cell simulation channels
Voltage range: 0V to 5V per channel
Current output: Up to 5A per channel (sink/source)
High-accuracy voltage programming and readback (±0.02% FS)
Supports multi-channel parallel connection to increase output current
Supports multi-channel series connection to simulate battery strings
Fast transient response for dynamic testing
Independent control of each channel's voltage and current
Built-in cell balancing simulation function
Standard LAN, USB, CAN, and digital I/O interfaces
Compatible with battery management system (BMS) testing
Safe operation with overvoltage, overcurrent, and overtemperature protections
Modular design allows flexible expansion
User-friendly software for test setup and monitoring
Application Diagram - Battery Management System
The battery cell simulator 87001 can simulate voltage of battery cells in series and provide current to balanced circuits of BMS boards. When integrated into an automated BMS test system, the 87001 can test BMS boards as shown in the architecture diagram.
Battery Cell Status in Parallel and Serial Operation Mode
■ For applications that require more than 16 battery cell strings, users can connect up to 15 units of 87001 simulators in series.
■ Users can also independently connect each 87001 through an Ethernet hub. Where the Ethernet bandwidth is sufficient, the upper-layer controller can perform synchronous remote control, issuing voltage modulation commands to multiple 87001 simultaneously with a voltage control response time of less than 10ms for each individual unit.
■ The hardware configuration can achieve up to 240S 2P (voltage < 1,000V). The simulator supports co-existing connections of channels in both series and parallel, with an automatic current balancing design in parallel connection mode.
Note: The voltage control response time (phase delay time) = upper-layer controller command sending time + 87001 command processing time + voltage rise/fall time.
Remote Control Function
Chroma's proprietary Softpanel is provided to control the battery cell simulator, allowing the user to:
■ Individually adjust the voltage of each battery string
■ Set the voltage change procedure: OVP/UVP/OVP release /UVP release test
Note: The softpanel is only for a single unit of 87001
Sequence Programming
The battery cell simulator has 16 channels. Through the software interface, users can set the voltage and current limits for each channel individually and control settings such as the rise and fall of output voltage and synchronized startup between channels. Its low output noise feature allows it to maintain the DC characteristics of a battery cell without any ripples during dynamic load changes, guaranteeing a stable DC output in a timely manner. Additionally, this feature reduces surge voltage caused by load changes, which could otherwise harm the Unit Under Test (UUT). This makes it an ideal solution for non-static products and test applications requiring a reliable DC voltage source.
