Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: Systems and methods for operating an add-on battery that may be electrically coupled to a second system that includes an electrical energy storage device are presented. In one example, the systems and methods provide for extending operation of the second system via selectively powering the second system via the add-on battery in response to operating conditions of the second system.

Abstract: A battery protection device for protecting a battery (1;41) comprises an electrical circuit arranged to generate or suppress a ripple current through said battery. Said electrical circuit comprises a ripple generator arranged to produce an electrical ripple current, a first ripple injector (21;48) to be arranged on a positive power line to the battery, said first ripple injector being arranged to transfer said electrical ripple current to said positive power line, and a second ripple injector (22;49) to be arranged on a negative power line to the battery. Said second ripple injector is arranged to transfer said electrical ripple current to said negative power line. Said first and second ripple injector are arranged to operate in a differential mode, e.g. opposite sign on injected current.

Abstract: A charging circuit includes first and second input terminals connecting the circuit to first and second supply terminals, respectively, of a DC power source, first and second output terminals providing an output voltage to a load to be charged, a first switch between the first and second input terminals, a current sensor between the first input terminal and the first output terminal in series with the first switch, a connecting element having first and second inductance connectors for connecting an inductance, the first inductance connector connected to the switch and the second inductance connector connected to the first output terminal, and a diode element connected to the first inductance connector and the second output terminal. The first switch and the current sensor are arranged to be connected to a control circuit arranged for controlling operation of the first switch in response to a signal received from the current sensor.

Abstract: A battery protection device for protecting a battery (1;41) comprises an electrical circuit arranged to generate or suppress a ripple current through said battery. Said electrical circuit comprises a ripple generator arranged to produce an electrical ripple current, a first ripple injector (21;48) to be arranged on a positive power line to the battery, said first ripple injector being arranged to transfer said electrical ripple current to said positive power line, and a second ripple injector (22;49) to be arranged on a negative power line to the battery. Said second ripple injector is arranged to transfer said electrical ripple current to said negative power line. Said first and second ripple injector are arranged to operate in a differential mode, e.g. opposite sign on injected current.

Abstract: A charging circuit includes first and second input terminals connecting the circuit to first and second supply terminals, respectively, of a DC power source, first and second output terminals providing an output voltage to a load to be charged, a first switch between the first and second input terminals, a current sensor between the first input terminal and the first output terminal in series with the first switch, a connecting element having first and second inductance connectors for connecting an inductance, the first inductance connector connected to the switch and the second inductance connector connected to the first output terminal, and a diode element connected to the first inductance connector and the second output terminal. The first switch and the current sensor are arranged to be connected to a control circuit arranged for controlling operation of the first switch in response to a signal received from the current sensor.

Abstract: A battery module is provided for a battery system including at least two battery modules, where each battery module is provided with a module monitoring unit arranged to monitor at least one performance related parameter for each secondary cell in the battery module. Parameters relating to the performance for each battery module are stored in a memory on the respective module monitoring unit. An energy storage system with a battery pack including such a battery monitoring unit for monitoring the battery pack and a modular system of battery packs, each including at least two replaceable, interchangeable battery modules is also provided. The energy storage system can further include super- or ultracapacitor modules.