Power supply system

A control method implemented in an electrical power-supply system including a plurality of electrical batteries, each battery comprising a plurality of cells connected in series and/or parallel, and separate switches attached to each cell or to a group of the plurality of cells, the plurality of electrical batteries comprising main batteries, which are each dedicated to delivering electrical power to a corresponding piece of consuming equipment, the method comprising, for each main battery:

• acquiring the actual state of charge of the main battery,
• determining the difference between the acquired actual state of charge and the theoretical state of charge and/or the slope of variation in the acquired actual state of charge,
• comparing the difference with the first threshold difference and/or of the slope of variation with the first threshold slope, and
• when the determined difference exceeds the first threshold difference and/or when the determined slope exceeds the first threshold slope, generating a command to perform a recharge of the main battery using a selected standby battery of the plurality of electrical batteries, while keeping the main battery connected to the corresponding piece of consuming equipment,
• wherein the method further comprises
• keeping the actual state of charge of each main battery at the theoretical state of charge that is determined depending on a life cycle thereof,
• keeping the actual state of charge of each main battery above a threshold value, or
• monitoring a power level required by each piece of consuming equipment with respect to a threshold power level.

An electrical power-supply system, comprising:

• a plurality of electrical batteries, each battery comprising a plurality of cells connected in series and/or parallel, and separate switches attached to each cell or to a group of the plurality of cells, the plurality of electrical batteries comprising main batteries, which are each dedicated to delivering electrical power to a corresponding piece of consuming equipment;
• and
• processing and control circuitry configured to
• select a standby battery from the plurality of electrical batteries, the selected standby battery being a battery having an output current of zero;
• determine an operating configuration as a first configuration in which the selected standby battery provides assistance to one of the main batteries, or a second configuration in which the selected standby battery charges at least one main battery;
• and
• achieve a connection configuration of the selected standby battery to the main battery depending on the determined operating configuration,
• wherein, for each main battery, the processing and control circuitry is further configured to
• acquire an actual state of charge of the main battery,
• determine a difference between the acquired actual state of charge and a theoretical state of charge and/or a slope of variation in the acquired actual state of charge,
• compare the determined difference with a first threshold difference and/or compare the slope of variation with a first threshold slope, and
• when the determined difference exceeds the first threshold difference and/or when the determined slope exceeds the first threshold slope, activate a provision of assistance to the main battery using the selected standby battery while keeping the main battery connected to the corresponding piece of consuming equipment,
• wherein, for each main battery, the processing and control circuitry is further configured to
• compare the difference with a second threshold difference higher than the first threshold difference, and/or compare the slope of variation with a second threshold slope higher than the first threshold slope, and
• when the determined difference exceeds the second threshold difference and/or when the determined slope exceeds the second threshold slope, activate a disconnection of the main battery from the corresponding piece of consuming equipment and activate a connection to recharge the main battery to the selected standby battery or to an electrical grid.