• Home
• Services

  System Software

  Bespoke Solutions

  Manufacturing Solutions

  Outsource Partnering

  System Integration

  Typical Projects

  Application Notes

  Data Sheets

• Products

  System Hardware

  Multifunction multiplexer

  Lightning strike protection test

  QM 10000 Power Rack

  Battery Capacity Test

  Environmental Test

  PXI-VXI Cards

  Modular Products

  Industrial Computing

  Power

  Vision/Audio/Video

• Quality
• News
• About us
• Contact Us

QM Systems designed the 1kW charge/discharge unit to overcome the problem of determining rapidly the condition of battery packs and/or their associated unit. The challenge was to provide simple and safe controls as well as fast accurate measurements while dealing with large currents. The solution required a detailed understanding of power supplies design and battery performance.

The tester designed and manufactured by QM Systems is a test instrument to determine the quality of various types of battery and battery "packs" and to run powered tests on battery powered units. The instrument allows for the charging and discharging of batteries under controlled conditions and displays total power delivered as well as running voltages and currents. The instrument will also provide current limited selectable voltages in the range of 3.6 to 24 volts and 0 to 40 amps. The front panel of the instrument is equipped with a numeric keypad, 4 row by 20 character LCD, status LEDs mains on/off & an emergency reset switch.

Testing Lithium Ion Batteries for the Joint Strike Fighter required a complete analyisis of the failure modes of the battery test system with human and machine safety interlocks. The QM10043 (28V) and QM10044 (270V) battery test systems provide a complete charge discharge profile with discharge power upto 2.5kW. The charge cycle is managed by an onboard processor that provides individual cell balancing via a CAN interface to ensure that the battery remains in balance during the charging cycle.