September 27, 2022


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Japan new capacitors for electric vehicles to be fully charged in one minute

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Japan new capacitors for electric vehicles to be fully charged in one minute

Japan new capacitors for electric vehicles to be fully charged in one minute.

On June 17, it was reported that Eamex, a Japanese electronic component development company, has developed high-capacity capacitors.

If it is used in a pure electric vehicle (EV), the charging can be completed in as little as 1 minute, and the energy conversion efficiency for kinetic energy recovery is also very high.

If it is configured in the same place as a lithium-ion battery, it is possible to achieve an EV battery life of more than the same level. distance.

According to the report, capacitors store electricity by adsorbing electrons and the like on the surface of the electrodes.

They are not based on chemical reactions like batteries, so they charge and discharge quickly and are not prone to deterioration.

The capacitor developed this time replaces the positive electrode of the lithium ion battery with a special conductive polymer called “polyaniline”, which can efficiently absorb lithium ions.

The trial product can be charged in 1 to 3 minutes, and can be repeatedly charged and discharged more than 30,000 times.

The storage capacity is 50 Wh/L, which is about a quarter of that of ordinary EV lithium-ion batteries.

However, due to its low resistance, it basically does not generate heat during charging and discharging, and does not require the heat dissipation device necessary for the battery.

The same volume can be used. Stores 3 times the electrical energy.

In addition, this capacitor converts heat into electricity and reuses it with 10 times the “regenerative efficiency” of a battery.

If the above factors are considered comprehensively , it is possible to achieve an EV cruising distance equal to or greater than that in the same installation location as the lithium-ion battery.

In addition, since the materials do not use the rare metals nickel and cobalt, circuits for control safety can also be easily realized, and their manufacturing costs are reduced by half.

Eamex will supply samples in August and will start mass production in the near future.

In addition to EVs, there are other wide-ranging applications. Takahiro Oda, a senior expert at the Innovation Promotion Center of Japan’s OKI Company, said, “It is planned to be introduced as a power source for robots and for power storage of renewable energy.”

It is reported that the stability of the work has been confirmed through an empirical test jointly conducted with Eamex five years ago.

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