Successful customer trials drive series production of electric compact equipment
This year, Bobcat’s E10e zero tail swing (ZTS) 1-tonne battery-powered mini excavator came off the production line with the first machines to be sold in Europe, the Middle East and Africa, with North America and then Asian markets to follow.
The E10e is built on the same platform and produced on the same production line as the diesel-powered E08 and E10z mini-excavators. The E10e is the world’s first 1 tonne battery-powered mini-excavator, combining zero emissions, low noise and a width of 71 cm, allowing it to easily pass through standard doors and in and out of lifts. It is suited to indoor demolition and basement digging, urban/city centre developments, night-time work and contracts in quiet zones such as hospitals, cemeteries, schools and so on.
The E10e has a lithium-ion battery pack with an advanced management system, designed to fit within the standard machine envelope to maintain the machine’s ZTS profile, matching all the parameters and dimensions of the standard diesel-powered E10z mini-excavator. Based on customer studies, Bobcat has optimized the battery pack to provide capacity to match typical work patterns.
The E10e can therefore be operated for up to four hours on one charge. By using an optional external 400V supercharger, it can be recharged to 80% of its capacity in less than two hours. As a result, the E10e can operate throughout a full working day when used with normal work breaks. The battery can also be fully recharged overnight by using the on-board charger from a standard 230 V grid.
Also this year, JCB went into full production with its first fully electric mini excavator, the 19C-1E, with orders rolling in from customers from across Europe and North America.
The 19C-1E is designed for working indoors or outdoors, in factories, tunnels or basements, for digging foundations, or on utility projects. The mini excavator is five times quieter than its diesel counterpart and can be fully charged in under two hours. The model is expected to find demand from companies working inside buildings and in emissions and noise-sensitive inner-city areas. Fully charged, the 19C-1E can put in a typical full day’s shift for a mini excavator.
Following the launch of Volvo’s electric compact machines at Bauma 2019, the ECR25 excavator and L25 wheel loader, both machines have been delivered to customer sites for testing.
The ECR25 excavator has been delivered to France-based contractor Spac to dig trenches at the Saint-Nom-la Bretèche golf course, just outside of Paris. The L25 wheel loader has been delivered to Germany-based tree farm and landscaping company Leick Baumschulen.
To make the ECR25 and L25 electric, the combustion engines have been replaced with lithium-ion batteries. The ECR25 is fitted with lithium-ion batteries and one electric motor which powers the hydraulics in order to move the machine and the attachment. The machine’s batteries store enough electric energy to power the ECR25 for eight hours in its most common applications, such as utility work.
The L25 incorporates lithium-ion batteries which allow for eight hours of operation in the machine’s regular applications, including light infrastructure work, gardening, landscaping and agriculture. The L25 also incorporates two dedicated electric motors, one for the drivetrain and one for the hydraulics. Decoupling the subsystems has led to higher efficiency in both the systems and the entire machine.
Both the ECR25 and L25 have on board chargers that enable overnight charging via a regular household plug socket. A fast charging option, requiring more powerful grid access, will also be available.
From mid-2020, Volvo CE will begin to launch its range of electric compact excavators (EC15 to EC27) and wheel loaders (L20 to L28), stopping new diesel engine-based development of these models.