System for managing the charging of a battery and the regenerative braking of a vehicle at least partially powered by the battery and associated regulation method

An electrical power supply system for a motor vehicle, comprising:

• an electrical accumulation battery, the battery including one or more cells, the battery including an ammeter configured to measure current passing through the battery, and at least one voltmeter, each voltmeter of the at least one voltmeter being configured to measure voltage at terminals of a corresponding cell of the one or more cells;
• an electronic control unit configured to deliver a maximum power that can be accepted by the battery during a recharging phase,
• wherein the control unit is configured to compute a maximum power that can be accepted by a selected cell of the one or more cells, the maximum power that can be accepted by the battery being a multiple of the maximum power that can be accepted by the selected cell,
• wherein the control unit computes the maximum power that can be accepted by the selected cell by taking a minimum of at least three values, including a first power, a second power, and a third power,
• wherein the first power is calculated by the control unit such that the selected cell does not exceed a constant threshold voltage,
• wherein the second power is calculated by the control unit such that metal deposits are not formed on a negative electrode of the selected cell based on a first operating threshold, and
• wherein the third power is calculated by the control unit such that the metal deposits are not formed on the negative electrode of the selected cell based on a second operating threshold that is different than the first operating threshold.

An electrical power supply system for a motor vehicle, comprising:

• an electrical accumulation battery, the battery including one or more cells, the battery including an ammeter configured to measure current passing through the battery, and at least one voltmeter, each voltmeter of the at least one voltmeter being configured to measure voltage at terminals of a corresponding cell of the one or more cells;
• an electronic control unit configured to deliver a maximum power that can be accepted by the battery during a recharging phase,
• wherein the control unit is configured to compute a maximum power that can be accepted by a selected cell of the one or more cells, the maximum power that can be accepted by the battery being a multiple of the maximum power that can be accepted by the selected cell,
• wherein the control unit computes the maximum power that can be accepted by the selected cell by taking a minimum of at least three values, including a first power, a second power, and a third power,
• wherein the first power is calculated by the control unit as a product of a first linear function relative to the battery current and relative to the voltage at the terminals of the selected cell, and a second linear function relative to the battery current and relative to the voltage at the terminals of the selected cell,
• wherein the second power is calculated by the control unit as product of a first constant threshold voltage by the sum of the battery current and of a term which is a function of the voltage at the terminals of the selected cell, and
• wherein the third power is calculated by the control unit as a product of the following three terms:
• the inverse of the square of the sum of the internal resistance of the selected cell and of a second constant positive slope factor;
• the battery current multiplied by the internal resistance of the selected cell, to which is added a third threshold voltage and from which is subtracted the voltage at the terminals of the selected cell;
• the third threshold voltage multiplied by the resistance of the selected cell, a term to which is added the voltage at the terminals of the selected cell multiplied by the second slope factor and from which is subtracted the battery current multiplied by the internal resistance of the selected cell and multiplied by the second slope factor.