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AUTOMOTIVE

Safety, reliability, configuration management and production put special requirements on automotive design and production.

Our internationally experienced team is specialized in automotive electrics and automation design.

Services
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Control Units

Typical units engineered by Microteam for vehicles are eg.
  • Ballasts for fluorescent lights
  • Controllers for electric motors and illumination
  • LED ballasts and controllers
  • ECUs and I/O modules
  • Vehicle computers

Programming Framework

Our unique Lucid programming framework is based on the core idea of modularization. All functionality of an automation systems is divided into single modules, functions, I/O configurations, firmware and other reusable components and databases.

The functional components are target independent. In addition to the software performing the core functionality, they can contain multilingual documentation, production testing and other metadata.

For more information and quotations, please contact

Eero Kalevo
Puhelin +358 207 660 773
Email etunimi.sukunimi@microteam.fi
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Electrical Design

The environmental requirements of vehicles and mobile machineries are demanding. Great temperature fluctuations, humidity, ice, water, salt, dust and various chemical and mechanical stress factors cause the elekctro mechanical design its challenges.

Automotive production is almost always serial production which calls for precise detail planning and documentation

Low voltage 12V, 24V and 48V systems, ECUs and CAN busses with user interfaces are typical for light vehicles, passenger cars, commercial vehicles and mobile machineries.

With more and more electrical vehicles and mobile machineries the high voltage drive lines and components are being used in todays electrical design. Designing high voltage drive lines, defining the components and planning the electrical safety and paying attntion to the rules and regulations are important areas in the design phase.

Recording safety systems, fleet control, drive control, passanger displays units, fare collection systems and other ICT systems connected to the automation systems of the vehicle are essential parts of functional entity

The vehicle and the mobile machinery consists of various functions, which are built from either mechanical, hydraulic, pneumatic or electrical parts and systems. The electrical planning is taking care of any electric part of these functionalities.

Electric planning where the components are connected to each other electrically have typically the following dimensions and deliverables:
  • Architecture
  • Circuit and connection diagrams
  • Routing of the cable harnesses
  • Cable harness diagrams
  • BOM
  • PDM
  • CAD design: E3, ePlan, and Vertex
  • Software design and specification
  • Programming
  • Bus configuration
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Automotive applications

HVAC (Heat Ventilation and Air Condition) – the temperature control in the cabin is typically based on water heat exchanger including frontpanel, air circulation blowers and sealing heatsystems. The entrance areas in busses are kept from freezing with the help of electro heated panels installed directly under the floor surface material. The windscreen de-icing can also be arranged fully electric. In electric vehicles, it is a common practise to use heat pumps for various temperature control applications, both heating and cooling.

The high voltage electric energy can be used also for heating purposes in electrical vehicles. The heat losses typical for combustion engines is not available in EVs and using fossil fuels in addtional heaters is being minimized. Without a combustion engine powering the air conditioner compressor, the air conditioner for heating and cooling must be powered directly from the high voltage system. In water heated systems the heat energy is also derived from the high voltage battery system. The energy balance control is always a compromise betweeen passenger comfort and the drive distance, including time to time many other variables.

The energy efficiency i.e. how much energy is needed from the batteries, of the heating system can be improved be increasing the insulation, reducing ventilation and pre heating or –cooling the fresh using the energy from the charger prior to disconneting.

The HVAC solutions, temperature control algorithms, energy ballance control and user interfaces are an increasingly important part of the vehicle or mobile machinery usability and funtionality.
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Electric and hybrid vehicles

Electric vehicles are the fastest growing business in automotive industry: EH, HEV and PHEV are changing the future automotive business. The commercial city busses are already today hybrids vehicles and full electric models are being tested in several locations. Full electric mobile machines are the future in many applications.

In addtion to automotive low voltage, the high voltage systems create a new expertise area within Microteams scope of supply. Microteam together with Comatec Group masters the overall vehicle structures and has gained wide experience in the area of electric vehicles including the standards, regulations and test methods. High voltage circuits and systems like accumulators, chargers and control systems demand also expertise in safety standards and EMC test capabilities.

A typical design case of an electric vehicle or electric mobile machinery has the following steps: defining the requirements, creating the the overall structural and concept design and dimensioning the electrical system followed by the power line design.
  • Accumulator management and temperature control
  • Mechanical structural design
  • The structural design of the electric and electronic systems
    • Safety in electrical and drive systems
    • EMC in power and control circuits
    • Reliability of the electrical and electronic systems conditions and mechanical stress
  • Testing and acceptance procedures