Technology Development


Multiple Circuit Rectifiers

These are designed for lead-acid battery formation. The cabinets contain multiple circuits housed in pull down modules. All essential circuit components such as control boards, semiconductors, AC and DC cont actors are housed in these modules. They can be serviced easily in the event of a component failure.

Typically, 20 batteries are connected in series to one circuit. The batteries’ size and capacity determine the current and voltage ranges and subsequently the number of circuits per cabinet.
Each circuit is isolated from each other by using individual secondary winding of the main transformer and equipped an IGBT power module.

The Battery Manager formation software permits each circuit either to run individually, in groups, or in parallel. Battery Manager is a database-oriented software for the control and administration of battery-related processes in the formation and laboratories as well as for the production planning and supervision.

Primary Features and Benefits

  • Reliable and accurate formation: Batteries are formed exactly as per specification, each and every time.
  • Discharge-enabled models regenerate battery energy to the AC power line during discharge thus reducing energy losses and heat generation.
  • Pull down modules for easy maintenance and minimal circuit down time.
  • Each circuit uses inductive filtering to minimize DC ripple and maximize power efficiency.
  • Main transformer has discrete, isolated secondary’s to provide the highest circuit stability.
  • High speed communication with host PC via TCP/IP.
  • Designed to readily integrate with Battery Manager Formation Software.
  • Compatible with Inbatec Acid Recirculation System

Operator Safety

Each of our products is designed with operator safety in mind. The system’s isolated secondary’s on the main transformer reduce the risk of electrical shock and a main circuit breaker protects personnel when performing maintenance on the rectifier cabinet. Each circuit is protected by an AC and DC contractor to isolate the circuit from the high voltage of the main transformer and the string of batteries.

Benefits specific to IGBT models

IGBT technology rectifiers are exceptionally economic with energy in charge mode. They also have a very good degree of efficiency for power regeneration in discharge mode. Both features contribute directly to reducing the operating cost of your battery formation plant. Thanks to the best possible power factor, any investment in PFC (power factor correction) systems can be omitted. Cost for grid feed-in are minimized, too.

General Information

Individual battery voltages are recorded by using an external data-logger which is connected via CAN bus. In most of today’s applications rectifiers are installed in combination with water cooling to do the initial charge for automotive batteries at reduced process times. Due to the efficient cooling higher charging currents can be achieved compared to air cooling. 30 amps for small car batteries, 50/60 amps for most of the car and truck batteries and 100 amps for heavy truck batteries are typical current ranges when using water-cooled formation.


Submarine Battery Tester

The Submarine Battery Testers (SBT) has been designed for testing very high capacity Submarine batteries. It can also be used for testing other types of batteries. The SBT performs charging and discharging in accordance with the programmed test schedule. Parameters are constant current, constant voltage, constant resistance and constant power can be done with high accuracy.
For data evaluation, the SBT runs either with Digatron Power Electronics well-known Battery Manager or BTS-600 software for research and development requirements.

The SBT is available in transistor technology, SCR technology. Transistor technology devices typically convert energy losses into heat. For devices in SCR technology, small energy losses are typical as these units are using phase controlled modulation respectively, which allows to regenerate the discharged energy to the AC power lines.

Numerous options are available such as paralleling of multiple cabinets, single cell operation, temperature measurement channel, data-logger interface, CAN-Bus interface as well as digital inputs and outputs and a RS 232 interface to the climatic chamber.