Now with ±1mV/1mA cell accuracy and 1,000V reinforced isolation!
The Battery Simulator 1201 provides twelve programmable cell channels that sink and source current for testing battery management systems (BMS) and battery-sensitive electronics. The cell channels are isolated to enable series connections for simulating battery modules, strings and packs. The instrument is controlled from a computer connected via Ethernet or high-speed CAN. The 1U rackmountable instrument can operate on a benchtop or stacked within a 19" rackmount enclosure. A soft front panel provides easy access to the unit for basic testing and initial startup, while software drivers and CAN database are ideal for automated test system integration. Built-in voltage and current readback sensing provide accurate cell voltage measurements and control without external monitoring equipment. The Battery Simulator 1201 is FCC and CE certified and relied upon by electrification companies globally.
- 12 independently controlled cell channels in a 1U form factor
- 0 to 5 VDC output, sink/source up to 500 mA/ch
- 1000 VDC reinforced/double cell channel isolation
- Auxiliary analog and digital I/O
- Remote inhibit via external dry contact
- Ethernet and high-speed CAN communications
- Soft front panel execution software
- NI LabVIEW™ & Python drivers
- CAN .dbc file
- Integration into all common HIL and production test platforms
The Battery Simulator 1201 is a major revision and successor to the industry’s most popular programmable battery cell simulator (aka emulator), the 1200. A commercial-off-the-shelf instrument, the 1201 simulates battery cell voltages and currents for safe and efficient testing of Battery Management Systems (BMS) and other battery-sensitive electronics. The 1201 provides twelve programmable cell channels in a 1U, 19-inch rackmount enclosure, which is the industry's highest cell channel density! It is isolated to 1,000V, enabling the series connections for simulating battery modules, strings and packs. The 1201 may be controlled via Ethernet or high-speed CAN using NI LabVIEW, Python and CAN dbc.
Since 2013, the 1200 has been relied upon by hundreds of electrification companies globally, long considered a “stalwart” for its durability and versatility. The Battery Simulator 1201 now features improved ± 1mV and ± 1mA cell voltage and current accuracy, as well as 1,000V of reinforced isolation. Moreover, the 1201 is compatible with the 1200, preserving your legacy software investments.
Learn more about Bloomy’s complete BMS test offerings:
| Cell Channel Simulation | |
|---|---|
| Number of Channels | 12 |
| Channel Type | Sink and Source |
| Voltage Range | 0.0 to 5.0V |
| Voltage Resolution | 0.1 mV |
Voltage Accuracy | ±1 mV |
| Current Range | ± 500.0 mA (output derates linearly under 2V) |
| Current Resolution | 0.1 mA |
| Current Accuracy | ±1 mA |
| Current Limiting Accuracy | ±10 mA |
| Isolation | 1000 VDC double/reinforced |
| Channel Readback | |
|---|---|
| Voltage Resolution | 0.1 mV |
| Voltage Accuracy | ±1 mV |
| Current Resolution | 0.1 mA |
| Current Accuracy | ±1 mA |
| Digital I/O | |
|---|---|
| Channels | 8 (bidirectional) |
| Logic Level | 3.3V |
| Analog Input | |
|---|---|
| Number of Channels | 8 (single–ended) |
| Max Voltage | 5.0V |
| Voltage Resolution | 0.1 mV |
| Voltage Accuracy | ±5 mV |
| Analog Output | |
|---|---|
| Number of Channels | 2 |
| Voltage Resolution | 0.1 mV |
| Voltage Accuracy | ±5 mV |
| Max Voltage | 5.0V |
| Max Current | 10 mA |
| Control | |
|---|---|
| Communications | LAN, CAN |
| Drivers | NI LabVIEW™, Python, CAN .dbc |
| Max Control Rate | 250 Hz |
| Physical | |
|---|---|
| Dimensions | 19” W x 1.75” H x 16.125” D (1U) (482.6 mm W x 44.5 mm H x 409.6 mm D) |
| Weight | 7.5 lb (3.4 kg) |
| Operating Temperature | 0 - 35°C |
The Battery Simulator 1201 can be used in many test scenarios where stacked as well as series-connected cell simulation is required. Below is an example of integrating two Battery Simulator 1201 instruments and an external high-voltage supply into a test system. The two Battery Simulator 1201 instruments simulate 24 cell voltages and balancing currents to a cell monitoring unit (CMU). The high-voltage supply simulates an overall pack voltage of 800V. The auxiliary I/O is used for temperature and control I/O simulation.
Do you have a specific application? Contact us.
The Battery Fault Insertion Unit (FIU) provides intelligent switching of cell simulation channels for the Battery Simulator 1201. The switching capability enables simulation of open circuit and short-to-rail fault conditions on any cell channel for the purposes of Battery Management Systems (BMS) testing.
 |  |
| Front of Unit | Back of Unit |
The Battery Simulator 1201 shipping software consists of LabVIEW drivers, a CAN dbc file, and a soft front panel. The soft front panel is an executable Windows PC application that allows you to connect, monitor and control one or multiple Battery Simulator 1201 instruments over CAN and Ethernet interface ports. The intuitive interface provides interactive monitoring and control of cell voltages and currents as well as accessory analog and digital inputs and outputs. Instrument communication settings, including CAN or Ethernet mode as well as Box ID or IP address can be changed programmatically. A drop down menu allows the user to select, monitor and control each instrument, one at a time.
