Silent Nights, Cheaper Power: HQESS Delivers 1,075 kWh and 215 kWh Mobile Charging Vehicles for Zero-Emission Earthworks

Two jobs on one moving site

The earthworks site needed to charge excavators while work points kept moving, with nearby residents making diesel noise and exhaust impractical.

Two capacities, one delivery

HQESS delivered 1,075 kWh and 215 kWh mobile charging vehicles in one shipment.

• 1,075 kWh for multiple excavators and longer continuous duty
• 215 kWh for scattered work points, shorter transfers and smaller equipment

Charge at night, work by day

The units charge from the grid during off-peak hours and supply excavators during the day, enabling quiet, zero-exhaust operation near residential areas.

Lower energy cost

Compared with external charging at roughly RMB 2–3 per kWh, off-peak grid charging reduced project energy cost by approximately $0.1–$0.3 per kWh.

Keep the machines working

On-site charging removed repeated transport to external chargers. Excavators could top up during work breaks and return to operation without unnecessary round trips.

Delivery discipline

A combined technical, production and delivery team built, factory-tested, transported and verified the units before handover.

同一现场的两类任务

土方施工现场需要为挖掘机补能，同时作业点不断变化；邻近居民区也使柴油机噪声和尾气方案不再适用。

两种容量，一次交付

HQESS 同批交付 1,075 kWh 与 215 kWh 两款移动充电车。

• 1,075 kWh 面向多台挖掘机及较长连续作业
• 215 kWh 面向分散作业点、短距离转场及较小设备

夜间充电，白天作业

设备在低谷时段从电网充电，白天为挖掘机供能，在居民区附近实现低噪、无尾气运行。

降低用能成本

相较外部充电站约每千瓦时 2 至 3 元的费用，低谷电充电使本项目每千瓦时约节省 0.1 至 0.3 美元。

让设备保持作业

现场补能减少了往返外部充电点的运输。挖掘机可在作业间隙补电，避免不必要的往返与工期损失。

交付保障

技术、生产与交付团队共同完成制造、出厂测试、运输及交付前核验。