Energy System Aluminum Shunts—the Future for Mobility and Aviation

Source: Wickeder Westfalenstahl | Translated by AI 1 min Reading Time

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The demands on energy systems in electric vehicles, aviation, and rail transport are continuously increasing. Higher currents, reduced weight, and maximum efficiency are the key parameters for the next generation of high-performance components. In this context, an innovation comes into focus: aluminum shunts.

Shunts with aluminum connectors are a perfect match for aluminum cables, which have long been the standard when it comes to weight reduction in mobile applications.(Image: Wickeder)
Shunts with aluminum connectors are a perfect match for aluminum cables, which have long been the standard when it comes to weight reduction in mobile applications.
(Image: Wickeder)

Aluminum has long been established in energy transmission—particularly in aviation and rail transport, where weight savings are crucial. Aluminum cables are standard, but connections to measuring components like shunts are often made with copper terminals. This leads to transition resistances, galvanic corrosion, and additional weight. The solution: shunts with aluminum terminals.

The Advantages at A Glance

  • No transition resistances—The material homogeneity between cable and shunt eliminates contact issues. This means less heat generation, higher efficiency, and longer lifespan of the connection.
  • Weight advantage—Aluminum is about 70 percent lighter than copper. In aviation, every gram counts—and in electric vehicles, every pound directly impacts range and energy consumption.
  • Resource conservation, sustainability—Aluminum is significantly more readily available, making the system more resource-efficient.
  • Corrosion resistance—With suitable surface treatments (e.g., nickel or tin coating), aluminum remains reliable even under extreme conditions.

Technological Challenges—And their Solutions

The plating of aluminum and the resistance alloy prevents oxidation and safeguards against contact resistance.(Image: Wickeder)
The plating of aluminum and the resistance alloy prevents oxidation and safeguards against contact resistance.
(Image: Wickeder)

Of course, aluminum also brings challenges: lower conductivity, oxidation, and mechanical stability. However, modern manufacturing technologies and intelligent designs solve these issues. Adjusted cross-sections compensate for the lower conductivity. Additionally, the plating of aluminum and the resistance alloy prevents oxidation and safeguards against contact resistance.

Fields of application

  • Electric vehicles: Battery management systems, high-current connections, and charging infrastructure benefit from the weight and efficiency improvements.
  • Aviation: Here, the combination of weight savings and reliability is a game-changer.
  • Rail transport: Aluminum shunts harmonize perfectly with existing aluminum conductors and reduce maintenance effort.

Aluminum shunts are more than just an alternative—they are the consistent, disruptive advancement for high-current applications in mobility and aviation. They combine efficiency, lightness, and cost advantages, setting new standards for the future of energy distribution.

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