Qoltec solutions include microprocessor-based chargers for different battery types and DC/AC converter modules, enabling power to be supplied to mains devices from 12V and 24V installations. TME offers models for professional environments, including mobile systems, power installations and industrial applications.

Qoltec microprocessor-based chargers - controlled battery charging process

Qoltec chargers operate using microprocessor control that continuously analyses the battery parameters and adjusts the charging flow. It is a multi-level process in which the devices implement a multi-stage charging algorithm that corresponds to the chemical characteristics of the different types of batteries.

Qoltec chargers

Multi-stage charging process - technical flow

The charging process comprises the following phases:

CC (Constant Current) phase - charging with a constant current, used to quickly replenish energy in the initial stage.
CV (Constant Voltage) phase - voltage stabilisation and gradual reduction in current as the battery saturates.
Absorption phase - equalising the charge level of the cells and reaching maximum usable capacity.
Sustained mode (float) - maintains voltage at a level that prevents self-discharge, without the risk of overcharging.

A process carried out in this way limits the degradation of the battery plates, reduces the risk of overheating and allows the performance to be maintained over a longer service life.

Chargers with active cooling with 88% efficiency

Automatic parameter adjustment

A major advantage of Qoltec's solutions is the active charging process, which means that the charger not only replenishes the energy, but also intelligently manages the entire process in a way that is optimised for the specific battery. Thanks to the use of microprocessor control, it is possible to precisely select the charging voltage depending on the type of rechargeable batteries, to adjust the current in real time and to automatically switch between charging phases - without any user intervention.

Compatibility and range of applications

Qoltec chargers are available in the TME catalogue to support AGM, GEL, SLA and classic lead-acid designs. The devices are used in applications such as:

backup power systems (UPS, buffer installations),
specialist and fleet vehicles
photovoltaic and off-grid installations,
marine vessels,
workshops, service workshops and equipment maintenance and diagnostic stations

DC/AC converter modules - voltage conversion in mobile and technical installations

Qoltec car converter modules allow you to convert DC voltage (12V or 24V) to 230V AC, allowing you to power electrical devices in off-grid locations.

Qoltec car converters

Converter modules operating principle

The device takes the voltage from the battery installation and, using electronics, converts it into an alternating voltage that is suitable for operation of mains consumers. The quality of the output voltage and the ability to operate under load are important here.

Power range and configuration

Qoltec converter modules have OPP, OVP, SCP and OTP protection

Quoltec converter modules are available in the TME catalogue with varying specifications:

600W models - for basic technical applications,
1000W units and more - for use with more demanding consumers,
2000W units - designed to power equipment with high power consumption.

Converter modules are designed for 12V (passenger vehicles, mobile systems) and 24V (heavy transport, industrial installations, energy systems).

Typical technical applications

Qoltec car converter modules are widely used wherever power is required for mains devices outside the standard 230V installation - both in mobile work and in field conditions. They are successfully used to power power tools, allowing assembly or service work to be carried out without access to the mains. They are also suitable for measuring and diagnostic equipment, where a stable voltage source is crucial for the accuracy of readings.

Thanks to their versatility, they also enable the connection of consumer electronics and IT equipment, including laptops, monitors or small multimedia systems, as well as various types of system chargers.

Converter modules are an essential part of the equipment of mobile workplaces and service facilities, ensuring that equipment continues to operate regardless of location.

Protection systems - protecting installations and consumers

Qoltec devices are equipped with protection systems that reduce the risk of damage on both the power supply and load side. Depending on the model, these include:

battery overcharge protection,
component overheating protection
short-circuit protection
reverse polarity protection,
real-time monitoring of operating parameters.

Such solutions are particularly important in installations with continuous operation or under varying load conditions.

Applications in energy and mobile systems

Qoltec solutions are used where independent energy management or energy conversion is required. This includes, among others:

off-grid and hybrid installations,
emergency power supply systems,
technical and service facilities,
transport and logistics,
distributed energy applications.

In such environments, the repeatability of operating parameters, the possibility of long-term operation and the adaptation of the device to the specific system are important.

https://www.tme.eu/gb/news/about-product/page/75440/qoltec-power-supply-and-energy-management-chargers-and-converters-for-demanding-applications/