The electrification of mining vehicles is transforming the image of this industry and heading towards decarbonisation. Charging an electric mining truck is comparable to charging seven Tesla cars simultaneously. It happens daily and requires a robust charging infrastructure. Electric mining trucks, like haul trucks, dump trucks and underground loaders, are often equipped with powerful and supersized batteries varying from 250 kWh to 600 kWh by usable capacity, almost 5-10 times of most passenger cars. Plus, their challenging outdoor operating environment calls for robust charging facilities that can withstand extreme degrees of salt fog, dust, heat, rainstorms and corrosive gases in most coastal areas or at remote mining sites, where not only the charging cabinet but also some key electrical components inside are prone to severe corrosion and reduced performance when being exposed to such harsh environment over time.
In similar cases, charging facilities that adopt the mainstream air cooling or semi-liquid cooling may have a high annual failure rate and short service life, greatly increasing the maintenance costs of site operators. In comparison, charging facilities by liquid cooling are expected to have a lower annual failure rate of less than 5‰ and a service life of more than 10 years, and can adapt to various harsh environments. To charge electric mining trucks rapidly and reliably, fully liquid cooled EV charging solutions stand as an optimal choice.
By employing liquid cooled charging modules and liquid cooled charging cables, the liquid cooled charging solution can ensure elevated charging experience with high-current charging, low-noise operation and high reliability in various environments while requiring minimum maintenance. Liquid cooled modules are a reliable, efficient and cost-effective alternative to fans at EV charging stations. They eliminate the need for cooling fans, by utilizing cold plates for heat dissipation without generating any noise. The cold plate offers a more uniform and powerful cooling platform for all components, enabling easy temperature control for transformers, conductors, capacitors and power devices. Meanwhile, the fan-free enclosure ensures no air exchange between the interior and exterior, maintaining a clean operating environment and ensuring high protection.
As a pioneering explorer of liquid cooled module technology, Ewicharge also provides multi-scenario liquid cooled charging solutions worldwide. At city high-end charging points, luxury EV users could anticipate ultimate charging experience from the moment they plug into their vehicles with liquid cooled charging facilities. Ewicharge’s EXP180K4, featuring fully liquid cooled design, boasts low noise level (<60dB), spring-assisted lightweight cable management, IP65 protection and superior reliability. A single charging cable can obtain max 500A current and it can also achieve 360kW power by CoolRing™ power sharing between two EXP180K4s. Compared with average air cooled EV charging stations, the EXP180K4 can ensure charge point operators (CPOs) more confidence in facility durability and user experience. Featuring high protection and high reliability, it can be deployed at coastal mining sites for electric mining truck charging as well.
Besides, Ewicharge also offers split 600kW liquid cooled charging solution dedicated for highway or interstate rest area high power charging (HPC) and electric truck charging. By split type design, more parking space can be saved to serve more electric vehicles with slim charging terminals (IP55) standing separately from the power distribution unit and power conversion unit (IP65). The standard base solution consists of one 600kW liquid cooled power cube and four to six charging dispensers carrying eight to twelve charging cables (500A liquid cooled cable option) respectively. The power conversion unit adopts our 30kW (LRG1K0100G) liquid cooled modular platform.
When multiple electric vehicles of different kinds pull in for a fast charging in the same period, smart and flexible power distribution is essential to maximize power utilization in EV charging. Ewicharge’s advanced patented power distribution prioritizes and maximizes power utilization in every possible situation. In essence, it can flexibly and smartly adapt to different charging demand in real time. For instance, when there’re four terminals and eight cables configured in the solution, cable #1 can not only absorb power from cable #8 and cable #2, but also can rely on cable #5 at the opposite for power supplement if both cable #8 and cable #2 next to it are taken. The flexible power sharing mechanism among all charging connectors forms a unique ring net pattern, allowing maximum usable power for every electric car. It’s the same case with the five- or six-terminal solution. With this liquid cooled HPC solution, multiple electric mining trucks can get replenished shortly and efficiently whatever environment they’re in.
Patented Power Sharing Strategy
For electric mining truck charging at remote industrial areas, we offer liquid cooled battery energy storage EV charging solution. It’s a compact all in one or split system integrating liquid cooled battery packs, liquid cooled charging modules and liquid cooled charging cables. Despite the limited AC grid power and harsh outdoor environment, it can deliver 400kW charging power reliably to heavy mining trucks supported by 60kW grid power and 350kWh LFP battery. Particularly, it can be hoisted and transported as a whole from one site to another without any hassle whenever needed based on individual project. It can also be deployed on a specialized vehicle to serve as a movable emergency EV charging solution in many cases, eliminating the need of grid power connection approval as well as time-consuming deployment.
With the increasing demand for HPC, Ewicharge’s liquid cooled charging solutions provide much higher reliability with less noise than average air cooled charging stations. In the electrification of heavy electric trucks and fleets, the liquid cooled charging solution is designed and built to provide reliable and robust high-power fast charging at optimal power levels. By embracing and moving to liquid cooled charging, we aim to drive mining fleets and trucks towards electricity and decarbonisation worldwide.
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