An electric work vehicle includes: an electric motor unit including a plurality of motors (21, 22, and 130); a motor control unit (50) that adjusts electric power from a battery (20) and supplies the adjusted electric power to the electric motor unit by controlling an inverter (4); a charge control section (53) that controls charging and discharging of the battery (20); a battery state detection device (9) that detects a state of the battery (20) including a rate of charge; and a regenerative electric power detection device (6) that detects a generation of regenerative electric power. When the rate of charge is in a margin region that is set between an overcharge region and a charge/discharge region, and when regenerative electric power is generated, the motor control unit (50) supplies the regenerative electric power to a motor that is not in operation, and provides a non-rotation current instruction to the inverter (4), the non-rotation current instruction being an instruction for generating a magnetic flux that does not cause the motor to rotate by using vector control.

An electric work vehicle includes: an electric motor unit including a plurality of motors (21, 22, and 130); a motor control unit (50) that adjusts electric power from a battery (20) and supplies the adjusted electric power to the electric motor unit by controlling an inverter (4); a charge control section (53) that controls charging and discharging of the battery (20); a battery state detection device (9) that detects a state of the battery (20) including a rate of charge; and a regenerative electric power detection device (6) that detects a generation of regenerative electric power. When the rate of charge is in a margin region that is set between an overcharge region and a charge/discharge region, and when regenerative electric power is generated, the motor control unit (50) supplies the regenerative electric power to a motor that is not in operation, and provides a non-rotation current instruction to the inverter (4), the non-rotation current instruction being an instruction for generating a magnetic flux that does not cause the motor to rotate by using vector control.

A network of collection, charging and distribution machines collect, charge and distribute portable electrical energy storage devices (e.g., batteries, supercapacitors or ultracapacitors). To charge, the machines employ electrical current from an external source, such as the electrical grid or an electrical service of an installation location. The charging and distribution machines may distribute portable electrical energy storage devices of particular performance characteristics and other attributes based on customer preferences and/or customer profiles. The charging and distribution machines may provide instructions to or otherwise program portable electrical energy storage devices stored within the charging and distribution machines to perform at various levels according to user preferences and user profiles.

A network of collection, charging and distribution machines collect, charge and distribute portable electrical energy storage devices (e.g., batteries, supercapacitors or ultracapacitors). To charge, the machines employ electrical current from an external source, such as the electrical grid or an electrical service of an installation location. The charging and distribution machines may distribute portable electrical energy storage devices of particular performance characteristics and other attributes based on customer preferences and/or customer profiles. The charging and distribution machines may provide instructions to or otherwise program portable electrical energy storage devices stored within the charging and distribution machines to perform at various levels according to user preferences and user profiles.

A regenerative braking energy dissipater system which is adapted to dissipate energy from a regenerative brake in the case when the battery cannot accept further energy. The system may switch the energy flow from the battery to a dissipater when the battery has reached a high level of charge. The dissipater may include load resistors. The system may be designed such that the airflow around the dissipater flows over and under the dissipating plate.

A regenerative braking energy dissipater system which is adapted to dissipate energy from a regenerative brake in the case when the battery cannot accept further energy. The system may switch the energy flow from the battery to a dissipater when the battery has reached a high level of charge. The dissipater may include load resistors. The system may be designed such that the airflow around the dissipater flows over and under the dissipating plate.

Various embodiments include method for determining a temperature of an active layer of a heating resistor for a recuperation system of a motor vehicle comprising: determining an instantaneous value of a current flowing through the active layer of the heating resistor at a first time; determining an instantaneous value of a voltage present on the active layer at the first time; calculating an instantaneous value of an electrical resistance based on the determined instantaneous value of the current and the determined instantaneous value of the voltage; and determining an instantaneous value of a temperature of the active layer from the calculated value of the electrical resistance.

Various embodiments include method for determining a temperature of an active layer of a heating resistor for a recuperation system of a motor vehicle comprising: determining an instantaneous value of a current flowing through the active layer of the heating resistor at a first time; determining an instantaneous value of a voltage present on the active layer at the first time; calculating an instantaneous value of an electrical resistance based on the determined instantaneous value of the current and the determined instantaneous value of the voltage; and determining an instantaneous value of a temperature of the active layer from the calculated value of the electrical resistance.

A vehicle includes an electric machine, friction brakes, and a controller. The electric machine is configured to recharge a battery during regenerative braking. The friction brakes are configured to apply torque to wheels of the vehicle to decelerate the vehicle. The controller is programmed to, responsive to an anti-lock braking event, adjust a regenerative braking torque of the electric machine based on a difference between a desired wheel slip ratio and an actual wheel slip ratio.

A vehicle includes an electric machine, friction brakes, and a controller. The electric machine is configured to recharge a battery during regenerative braking. The friction brakes are configured to apply torque to wheels of the vehicle to decelerate the vehicle. The controller is programmed to, responsive to an anti-lock braking event, adjust a regenerative braking torque of the electric machine based on a difference between a desired wheel slip ratio and an actual wheel slip ratio.