SPECIALIST EQUIPMENT
performance over the battery-changing alternative.
FAST CHARGING Fast charging technology is the key to unlocking the potential of electrification in mining: it can reduce or even remove the problems associated with taking vehicles out of the cycle for charging. Tis is because charging can take place whenever the vehicle is not moving: during breaks, between shifts, and even during operation while loading and unloading or queueing to load and unload. Tis dynamic charging method is referred to as opportunity charging. Opportunity charging must be
Electric vehicles are becoming more commonplace at mines;
their charging solutions must be reliable and robust
carefully planned so that the battery cycle aligns with the mining operation cycle. A well-planned opportunity charging cycle can keep electric vehicle batteries topped up to acceptable levels in short bursts of charging whenever the vehicle is stationary. Tis kind of charging could achieve continuous operation for an electric vehicle fleet during shifts. It can also enable heavy-duty electric vehicles to operate with smaller batteries, as they are continually recharged throughout the shift. A smaller battery requirement enables a larger overall payload for haul trucks, improving productivity in the electrified mine. Not only this, but opportunity charging can also eliminate the need for extra vehicles and the costs associated with that need.
that are not present in battery-changing processes. However, automated, fast charging can overcome these difficulties and ultimately deliver improved
ROBUSTNESS AND SAFETY MATTERS Due to the harsh environmental conditions such as dust, humidity, and heat, the various charging methods
Fast charging is the key to unlocking the potential of electrification
utilised must possess a ruggedness that can endure these circumstances and ensure steady operation of the electrified mine. Safety is a significant factor to consider along with the topic of robustness when implementing charging solutions. Tis involves ensuring the safety of workers on-site and during the charging of electric trucks. Automatic charging solutions can help enhance safety measures for workers in such environments.
A NEW APPROACH With the innovative QCC for high- performance charging system, Stäubli offers a solution that provides the high charging performance and maximum reliability and safety for high- performance commercial vehicles and mobile machinery. Te advantages of the system overcome the challenges for stationary charging systems outlined above. Te robust design of this solution ensures high reliability and durability, with low maintenance requirements. More importantly, the solution also prioritises safety for workers and battery charging cycles. Stäubli is currently working on upgrading its standard QCC range with even more power, enabling the system to charge up to 6MW. Tis will make even faster charging cycles possible.
Te high charge capacity and full automation make the QCC system perfect for opportunity charging, enabling continuous operation of the mining fleet meeting the 7,000 hours of annual uptime needed for haul trucks. Te specific design of the QCC allows high protection of the contact parts at all stages (mated, unmated, and during mating), which guarantees high reliability under harsh conditions. Tis ensures that there are fewer failures, providing a more efficient and reliable solution. Te charger is designed for high numbers of mating cycles, so it represents an excellent long-term investment for electrified mines. Its small footprint makes it easy to retrofit the QCC system into existing mines, and installation does not require major construction.
Alain Schierenbeckis with Stäubli Electrical Connectors.
www.staubli.com
www.engineerlive.com 33
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