Renault Zoe R90 - charging speed depending on temperature [DIAGRAM] • CARS

The Renault Zoe cannot be charged with direct current (DC). It uses alternating current (AC) and a car engine to simulate regenerative braking (called a Chameleon charger) and thus charges the battery. However, measurements from Zoe owners show that this is not a particularly effective method and is highly dependent on battery temperature and charge.

The graph shows the charging power (red dots on the color bar) depending on:

battery temperature (vertical axis)
battery charge level (horizontal axis).

The closer to red, the higher the charging power - the closer the grenade, the lower the charging power. There are 100 charging points on the graph. The points should not be connected in a line, this is a mixed set of measurements from different loads. However, certain patterns are clearly visible:

charging is very fast with a deeply discharged battery and at an optimal temperature, then it slows down;
the lower the temperature, the slower the charging – even with a heavily discharged battery,
more than 50 percent there is no chance to charge with a power higher than half of the maximum (21-23 kW),
charging more than 70 percent at half power is possible only at the optimum temperature (21 degrees Celsius),
Charging more than 80 percent at 1/3 power is only possible at a temperature close to optimal.

> Test: Renault Zoe 41 kWh – 7 days of driving [VIDEO]

Measurements refer to one vehicle only, so keep a certain distance from them. However, other Zoe owners cite similar numbers. Application?

The ideal place to charge the Renault Zoe is its own connection (“power”) with a suitable wall charger (EVSE) that will allow us to replenish the energy in the battery without worrying about the current time - that is, at night.

Worth Reading: Maximum Battery Charge and Maximum Battery Regeneration.

Art by Wolfgang Jenne

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