An apparatus for preventing overcharge of a battery in an eco-vehicle includes: a detector detecting the overcharge of the battery; and a signal processor controlling a high voltage relay according to an output signal output from the detector to block a charge of the battery.

A battery control system includes a plurality of battery cells that are separately controllable as units of individual cells or groups of cells. Each controllable unit may be switchably activated or deactivated in the overall battery circuit, and one or more conditions of each controllable unit may be individually measured. Various techniques are disclosed for operating the battery control system to optimize or improve system performance and longevity.

Systems and methods for storing energy for use by an electric vehicle are disclosed. Systems can include an electric vehicle battery pack including a rack configured to couple a plurality of independently removable battery strings to the vehicle, the battery strings configured to be selectively coupled in parallel to a vehicle power bus. The battery strings may include a housing, a plurality of electrochemical cells disposed within the housing, a circuit for electrically connecting the electrochemical cells, a positive high-voltage connector, a negative high-voltage connector, a switch within the housing, and a string control unit configured to control the switch. Each battery string can include a coolant inlet and a coolant outlet configured to couple with and sealingly uncouple from an external coolant supply conduit and an external coolant return conduit, and an auxiliary connector configured to couple with an external communications system and/or an external low-voltage power supply.

Systems and methods for storing energy for use by an electric vehicle are disclosed. Systems can include an electric vehicle battery pack including a rack configured to couple a plurality of independently removable battery strings to the vehicle, the battery strings configured to be selectively coupled in parallel to a vehicle power bus. The battery strings may include a housing, a plurality of electrochemical cells disposed within the housing, a circuit for electrically connecting the electrochemical cells, a positive high-voltage connector, a negative high-voltage connector, a switch within the housing, and a string control unit configured to control the switch. Each battery string can include a coolant inlet and a coolant outlet configured to couple with and sealingly uncouple from an external coolant supply conduit and an external coolant return conduit, and an auxiliary connector configured to couple with an external communications system and/or an external low-voltage power supply.

In a method for operating an electric vehicle and an electric vehicle, including an electric traction drive device for driving vehicle, a control device for controlling the driving, a first energy storage device, for supplying the control device using a first DC voltage, a second energy storage device, for supplying the traction drive device using a second DC voltage, and an energy supply unit for providing an output DC voltage, the first energy storage device is connected to the second energy storage device via a converter device, the first energy storage device is connected to the energy supply unit, the converter device converts the first DC voltage into the second DC voltage, and a power flow from the second energy storage device to the first energy storage device is prevented.

A power storage system includes: a battery; a voltmeter configured to measure voltage of the battery; an ammeter configured to measure current of the battery; and processing circuitry configured to control charge of the battery to prevent charging power exceeding charging power upper limit from being supplied to the battery. The processing circuitry is further configured to: calculate first charging power, at which the battery reaches voltage upper limit, based on estimated open-circuit voltage, which is an estimated value of open-circuit voltage of the battery, and first estimated internal resistance; calculate second charging power, at which the battery reaches the voltage upper limit, based on the voltage, the current, and second estimated internal resistance; and set the charging power upper limit, based on the first charging power and the second charging power.

A power storage system includes: a battery; a voltmeter configured to measure voltage of the battery; an ammeter configured to measure current of the battery; and processing circuitry configured to control charge of the battery to prevent charging power exceeding charging power upper limit from being supplied to the battery. The processing circuitry is further configured to: calculate first charging power, at which the battery reaches voltage upper limit, based on estimated open-circuit voltage, which is an estimated value of open-circuit voltage of the battery, and first estimated internal resistance; calculate second charging power, at which the battery reaches the voltage upper limit, based on the voltage, the current, and second estimated internal resistance; and set the charging power upper limit, based on the first charging power and the second charging power.

A battery system includes at least one battery including a plurality of cells and a hybrid control module configured to monitor a differential capacity of the at least one battery, determine when the monitored differential capacity of the at least one battery corresponds to a predetermined differential capacity of the at least one battery, and determine a state of charge of the battery in response to the determination that the monitored differential capacity corresponds to the predetermined differential capacity.

The present disclosure provides a driverless power supply system, a power supply control method, a power domain controller and a vehicle, which relate to the technical field of intelligent traffic, and particularly relate to the technical field of driverless driving. The system includes: a high-voltage battery box, a direct current converter, a main storage battery, a standby storage battery, a power domain controller and an electrical load; the direct current converter is connected with the high-voltage battery box and the electrical load through wires; the main storage battery is respectively connected with the direct current converter and the electrical load through wires; the standby storage battery is respectively connected with the direct current converter and the electrical load through wires; and the power domain controller is respectively connected with the direct current converter, the main storage battery and the standby storage battery through data wires.

The present disclosure provides a driverless power supply system, a power supply control method, a power domain controller and a vehicle, which relate to the technical field of intelligent traffic, and particularly relate to the technical field of driverless driving. The system includes: a high-voltage battery box, a direct current converter, a main storage battery, a standby storage battery, a power domain controller and an electrical load; the direct current converter is connected with the high-voltage battery box and the electrical load through wires; the main storage battery is respectively connected with the direct current converter and the electrical load through wires; the standby storage battery is respectively connected with the direct current converter and the electrical load through wires; and the power domain controller is respectively connected with the direct current converter, the main storage battery and the standby storage battery through data wires.