Electrical power supply system for a vehicle

An electric power supply system intended to be installed in an electric or hybrid vehicle, the vehicle comprising an electric power supply bus able to supply power to electrical equipment installed in the vehicle, said system comprising:

• a) a DC-DC voltage converter,
• b) at least two power supply cells, each comprising:
• i) a rectifier able to provide an AC voltage from a DC voltage and vice versa,
• ii) a battery, which is electrically connected to the rectifier, able to operate in a discharge mode in which the battery is able to provide a first DC voltage and able to operate in a charge mode in which the battery is able to recharge from a DC voltage,
• iii) a switching cell comprising switches able to connect the battery to the converter,
• c) a first set of switches able to connect the battery of a power supply cell to the battery of the neighboring power supply cell in order to connect the set of batteries in series,
• d) a second set of switches able to connect the set of batteries connected in series to the electric power supply bus,
• e) a control unit configured to control the first set of switches, the second set of switches and each switch of each switching cell,
• f) a distribution module intended to be connected to a recharging module external to the vehicle, said recharging module being configured to provide a supply voltage, the distribution module being configured to electrically connect at least one battery to the external recharging module in order to recharge the at least one battery from the voltage provided by the recharging module,
• g) a connection module configured to connect a single-phase voltage or a three-phase voltage to each power supply cell, the power supply system is configured to operate in an operating mode in which:
• the batteries are connected in series by the first set of switches,
• the distribution module connects one or more batteries to the external recharging module.