(Electric Vehicle)- Litz Wire
Today Elektrisola supplies automotive litz wires to many car manufacturers. With a proven history in the automotive sector, Elektrisola has developed litz wire products to serve in this field.
- Transformers for on board chargers
- DC-DC-converters and inverters
- Wireless chargers
- IGBTs for motors
Chargers: 110/220/380V AC to battery, 500-600V DC
- High number of single wires (up to 1600 strands, of fine enamelled wires)
- Extruded or film insulated
- EFOLIT Product family
DC-DC-Converter: High voltage battery → 12 V
- Litz 120 - 208 x 0.10 mm, round and profiled
- Film insulated (EFOLIT) or extruded HF-Litz wire
- Space/weight important, therefore compact design necessary
Drive Inverter: Battery → Drive Motor
Interior Heating Systems
Heating Systems
- Solid bare wire conductors (first generation)
- Carbon fiber elements (premium/luxury cars)
- Flexible litz wires (most common solution)
Typical Litz Wire for Interior Heating System
- Main material fine insulated wire made of alloys such as CuNi and others
- Low to medium high number of strands (12 to 50)
- Enamel - Polyurethane up to 180°C
- Outer insulation and mechanical protection by Polyamide extrusion coating
Requirements and critical production criteria
- Advanced resistance performance
- High flexibility and mechanical strength
- High temperature and liquid resistance
- No pinholes / low loop behavior
Wireless Charging inside Cars (Comfort items)
Charging of cell phones, players etc.
Standards for Qi, A4WP, and PMA still contain different frequencies. Today low power wireless charging with 5 W is standard technology and higher power output chargers with 10 - 100 W will introduced in the future.
Typical Transmitters:
Transmitters are defined acc. to Qi-standard from Wireless Consortium. Today types A1 to A9 (actual product designs) are specified. Other designs are available from A4WP with different frequencies.
Wire used: Mostly litz wire 105 or 115;x 0.08 mm Coil shape: Mostly round or oval Winding layers: 2 (Alpha winding) or 1 Type of processing: Not defined
Products used for lower power: Litz wire with selfbonding single wires or Smartbond Products used for higher power: 220 x 0.08 mm Smartbond
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