The Battle of the Batteries

Carbon-based hybrid power capacitors:

        How can hybrid power capacitors be best used and improve on lithium-ion batteries? Why is power density a competitive advantage? How can it save weight and hence reduce energy consumption? Recent postings on LinkedIn highlight that the market for full battery-electric vehicles is growing much slower than anticipated. The current market share is still at about 2%, 5 times less than anticipated 10 years ago.

        At the same time, it is becoming clear that a massive transition towards full battery-electric vehicles would face major obstacles, some of which are not likely to be solved by extrapolation of the current technologies. Besides the issue of Lithium and Cobalt shortages, there are also practical issues like safety, size and charging speed that prevent a wide-spread adoption. Even if we had much better batteries, there is the issue of charging stations. To allow fast charging (75% in 5 minutes), one would need MWh powerplants next to each charging station. The conclusion is twofold: electric driving is only feasible if we reduce the battery size and if we go away from lithium-ion. Smaller batteries can be charged in less time and require less raw materials.

        Hence, there is a growing consensus that while full battery-electric driving might be possible in an urban environment, to replace our Internal Combustion Engines, going hybrid is a reasonable option. Zero-emission most of the time and requiring much lest investments. There are many hybrid options (see for example https://www.ezoomed.com/blog/buy-new/types-electric-vehicles/ for a good overview).

        Many options are being explored, from very mild hybrid to extreme hybrid with a fuel cell delivering the prime energy onboard. There is no best solution for all use-cases, but they all share a common requirement: the battery’s primary use is not just storing electric energy but acting as a buffer with the capability to rapidly absorb energy (e.g. when the vehicle is braking) and to deliver energy in a short period of time when e.g. the vehicle must accelerate or go up the hill.

        The article below shows how carbon-based hybrid power capacitors are the best fit for these hybrid drives and perform better than traditional lithium-ion batteries. This is illustrated with a (serial) hybrid approach but it applies to mild-hybrid and parallel hybrid as well. A 15 kWh battery for example stores enough energy to drive for about one hour. Yet it can deliver power like a 150 kWh battery when needed. It remains safe and is extremely robust (see our test at https://kurt.energy/unparalleled-robustness-of-blue-cell-power-capacitors/.

The full article can be read here: Hybrid powercaps and hybrid drives

Premium car batteries using carbon-based Power Capacitors

        While lead-acid batteries have a long history and are still much in use, they suffer from aging and lose much capacity when cold. Kurt.energy delivers car batteries as plug-in replacements using Carbon-based Power Capacitors. These are premium car batteries for the most demanding vehicles:

  • No issues to start when the weather is freezing cold (-20°C or -40°C)
  • Zero maintenance for the lifetime of the vehicle
  • Lower fuel consumption for spark plug based gasoline engines (from 3 to 8% vehicle dependent)
  • 2 to 3% more engine power, especially at higher rpm (gasoline engines)
  • Specific configurations for specific applications
  • As a traction battery (e.g. forklifts) capability to charge very fast, reducing unproductive downtime
  • Can easily be used for 10 years without replacement

         Download the specifications here. Below a comparative motor test (tuned Opel Corsa gasoline engine). Once with the standard lead-acid Accu and once with a 60 Ah power capacitor Accu. Tests done on a MAHA 1000 Single Roller Dynamometer by VIVES labs in Kortrijk

Source: www.kurt.energy