Taiwan’s Dijiya Rolling Its Battery Cells Into Electric Buses & Stationary Storage Products

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Dijiya is an energy storage products company based in Taiwan that builds its own battery cells with the stable and cobalt-free lithium ferro phosphate (LiFePo4) chemistry. Across the industry, this chemistry is chosen for its stability as it is not prone to thermal runaway like more traditional lithium ion chemistries.

Dijiya battery cell (top) and module (bottom) at 2018 Energy Taiwan. Image credit: Kyle Field

Beyond thermal stability, LiFePo4 does not utilize cobalt, which is obviously a great thing for the health of humans as cobalt is toxic and the mining practices employed to extract it are not great, to say the least. It is also nearly single-sourced from The Democratic Republic of the Congo which provides ~60% of the global supply of cobalt. Cutting the potential supply issues and pricing fluctuations resulting from this supply constraint insulates its battery pricing from supply-side fluctuations.

Dijiya has bundled its battery cells into large trays of battery modules that it employs in its stationary energy storage products and is testing in electric buses. Further emphasizing how locally-focused Taiwanese businesses are, Dijiya is working exclusively with Taiwan-based IAC on a handful of fully-electric 17 passenger shuttle prototypes.

Image courtesy of Dijiya

The shuttles currently come with a 40kWh battery pack that yields 200 kilometers of range, based on early testing in Taiwan by the local transit authority. The battery modules themselves are IP67 rated and slot right into externally accessible doors on either side of the bus, making maintenance and or battery swap stations much more feasible options.

On the production front, Dijiya currently has the capacity to produce 50,000 of its 70Ah, 3.2v cells from its plant in Taoyuan City, but the Dijiya spokesperson shared that they are closely monitoring demand from customers in expectation of increased demand in the coming months.

Stationary storage solutions

On the stationary storage front, Dijiya has developed a stationary energy storage system solution that utilizes its battery modules in a scalable product that’s reminiscent of a filing cabinet. The battery modules simply slot into each of the filing cabinet drawers and are controlled by an integrated human-machine interface station.

The Dijia Energy Storage Solution and EVSE for its ebus at 2018 Energy Taiwan. Image credit: Kyle Field

The solution was designed to be scalable, and Dijiya has extended the solution to containerized formats that make it easier to deploy large-scale energy storage solutions at the megawatt-hour level or larger. The three current offerings come in at 200kWh, 500kWh, and a 1MWh tiers, which utilize increasingly larger implementations of Dijiya’s energy storage racks installed inside of a shipping container.

Dijiya will have its work cut out for it on the production side if the orders start rolling in for these larger units, but for now, it is encouraging to see a homegrown player in Taiwan using a more environmentally friendly, stable chemistry in a range of energy storage products.

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Kyle Field

I'm a tech geek passionately in search of actionable ways to reduce the negative impact my life has on the planet, save money and reduce stress. Live intentionally, make conscious decisions, love more, act responsibly, play. The more you know, the less you need. As an activist investor, Kyle owns long term holdings in Tesla, Lightning eMotors, Arcimoto, and SolarEdge.

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