Vehicle comprising a wheel driven generator for charging a battery

1. A vehicle having wheels for riding the vehicle over a carrier such as a road or rails, said vehicle having a battery and a generator connected thereto, said generator being arranged to generate electrical power for charging said battery, said generator being further mechanically connected to a first wheel of the wheels such that said first wheel drives a rotor of said generator, wherein said generator is an asynchronous generator or a permanent magnet generator, wherein an AC/DC inverter/charger is connected between said generator and said battery for regulating the current and the voltage of the charging power to said battery,

wherein said mechanical connection between said generator and said first wheel comprises;

a first gear box including gear wheels configured to transfer rotation of said first wheel to a central shaft;

a second gear box configured to transfer rotation of said central shaft to said rotor;

the first gear box and the second gear box configured to regulate a rotation speed of said rotor relative to the rotation speed of said first wheel, wherein said vehicle is a non-self propelled trailer or railway carriage.

2. A vehicle in accordance with claim 1 , wherein said generator is an asynchronous generator.

3. A vehicle in accordance with claim 1 , wherein said generator is a permanent magnet generator.

4. A vehicle in accordance with claim 1 , wherein said battery is a lithium-ion battery.

5. A vehicle in accordance with claim 1 , wherein said first wheel drives said rotor of said generator by means of a shaft connected to the center of said first wheel and axially extending therefrom.

6. A vehicle in accordance with claim 1 , wherein said vehicle comprises a control unit for selectively arranging said generator to simultaneously be driven by said first wheel and generate power for charging said battery if said vehicle is set to decelerate.

7. A vehicle in accordance with claim 1 , wherein said vehicle comprises a cargo space with a cooling unit arranged to cool said cargo space to a desired temperature, wherein said cooling unit is powered by said battery.

8. A vehicle in accordance with claim 1 , further comprising:

a second wheel of the wheels;

a third gear box including gear wheels configured to transfer rotation of said second wheel to the central shaft.

9. A vehicle in accordance with claim 8 , wherein the first and third gear boxes are positioned on opposite ends of the generator and the second gearbox is located between the first and third gear boxes.

10. A vehicle in accordance with claim 9 , wherein the second gearbox is located beneath the generator.