E-Mobility components

Wieland components for better electric motors and higher-efficiency batteries. The challenge to optimize the key element battery for electromobility provided the idea of enhancing the efficiency of all components – from the rotor to the wiring to the drivetrain. As a partner of many years’ standing to the automotive industry, Wieland utilizes its unique, broadfronted access to key technologies to develop high tech components for electromobility.

This includes rotors for maximized electrical power to contacting components for stator windings in the tightest of spaces and precision resistors for ultra precise measurements. As a leading manufacturer of semifinished products of copper and copper alloys, including strips for plug connectors, semiconductor components, and electrical and electronic components, Wieland has proved its reliability as a services partner from prototyping to series production.

As a rule, these products are developed in a partnership with the most-highly renowned automotive manufacturers, testifying to the know-how and position of Wieland on the market.

Our range of products

Our e-mobility components at a glance.

Wieland-Werke AG

This is our Wieland-Werke AG product portfolio.

Rotor Components

Rotors

High Voltage Components

Welded Multi-Metal Strips

Shunts

Shunt-based Current Sensors

Materials

Rotor Bars

Wieland offers you ready-to-install copper rotor bars of consistently high quality at maximum cost efficiency. This is guaranteed by our fully automated processes across the entire value stream.

In addition, the rotor bars can be manufactured in complex geometries, varying lengths, straight or twisted, and with or without notches. This enables unique rotor designs - from development to series product - from the smallest sample batch to mass production.

Wieland manufactures rotors in copper and aluminum for highly efficient induction motors. This enables you to meet the increasing need for energy efficiency and economy without the need for rare earth minerals.
We also offer engineering support during the development of your application-specific design. Furthermore, Wieland offers two different processes to produce rotors to meet your individual requirements. Both processes offer manufacturing with a very high degree of material filling without air inclusions, and we can draw on a wide range of experience from prototypes to series production.

Materials

The fabricated Wieland copper rotor is a new and innovative design, which is designed according to your requirements. Due to the disc-shaped design of the short-circuit ring, different materials can be combined individually, and fulfill the requirements for higher power densities and rotation speeds.

Additionally, the fabricated design has a higher mechanical strength and enables a very scalable, flexible, and economical approach for rotor production.

Overview of possible materials:
(All copper-based materials are produced in-house and are available in various strength levels)

Properties	Wieland K10	Wieland K14	Wieland K75
Application	Rotor bar	Short circuit ring	Short circuit ring
Density [g/cm³]	8,94	8,94	8,88
Electrical Conductivity [MS/m]	≥58,6	≥58	≥48
Tensile strength R_m[MPa]	200 – 350	220 – ≥360	430 – 640
Hardness [HV]	35 – 115	45 – ≥110	130 – 200
Datasheet	Download	Download	Download

Wieland's high-voltage components are hybrid components in which plastics are combined with copper alloys. With our distinctive knowledge in stamping, forming, laser welding, plastic injection molding, and automation; Wieland is already a long-standing component supplier in the field of e-mobility.
We offer individual solutions and support in development by taking DFM (= Design for Manufacturing) into account and can also offer prototypes from our prototype shop. We are happy to accompany you through all sample phases up to series production.

Materials

Connector Units & Overmolded Busbars

For contacting in the electric drive train or between the battery and the electric machine, Wieland offers you a wide variety of designs (e.g. fully overmolded; assembled) of ready-to-install connector units and overmolded busbars. The design of these is based on your requirements, which enables contacting in the tightest of spaces.
To evaluate your design and the corresponding requirements, please contact us via the contact address below.

The electron beam welded multi-metal strip can consist of up to five alloys. The stripes are also available in various dimensions, plated, or unplated. Large quantities of our multi-metal strips are supplied on coils. However, the delivery of piece sheet metal for prototypes is also possible.
We carry out all process steps in-house, and because of this we can find the best alloy combination for your application. Our offerings don’t end at only using our alloys. We also can evaluate using materials and alloys from other manufacturers.

Materials

With the use of our specially developed resistance alloys, electron beam welded multi-metal strips are ideal as pre-material for shunts.

Shunt resistors provide highly accurate and reliable current measurement over a wide temperature range, leading to a better battery management. Shunts are manufactured from an electron beam welded multi-metal strip using our specially developed resistor alloys.
Wieland offers shunts in various standard dimensions as well as customized designs. For this purpose, development, sample, and series production are located in-house.

Materials

Our standard shunts are designed according to uniform sizes and resistance values.

Currently, the Wieland portfolio includes the following basic shunts.

Variant	Length [mm]	Width [mm]	Power Rating at 70 °C [W]	Resistance values [µ Ω]
W6918	69	18	36	50, 100
W8518	85	18	36	50, 100
W8420	84	20	36	50, 100
W8436	84	36	50	25, 50
W8536	85	36	50	25, 50

View our datasheets to learn more

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The future is connected, electric and autonomous. With high-precision, shunt-based current sensors of QULECTRA, you can create the perfect conditions for precise current measurements. Make the future safe by using demand-oriented monitoring and reliable battery management.

QULECTRA is a joint venture of Wieland-Werke AG based in Ulm and Munich Electrification GmbH based in Munich. The two companies share a multi-year partnership in the provision of battery management systems with shunt-based precision resistors. With QULECTRA, the two companies are taking the next step in the development of best-in-class current sensors that point the way to a sustainable future.

More information about QULECTRA and its products can be conveniently found on the QULECTRA-Website.