ENERGY STORAGE DEVICE Russian patent published in 2019 - IPC H02J7/00 

FIELD: electrical engineering.

SUBSTANCE: energy storage device in one embodiment includes an energy storage element, a regulated voltage source, a connector with an inductor, a current sensor, and a control circuit. Energy storage element is connected to an electric DC line having the first electrode and the second electrode, and can be recharged from an electric DC line and discharge into it. Regulated voltage source is connected in series between the first electrode of the DC power line and the positive electrode of the energy storage element and is able to generate a DC voltage in the range of differences between the output voltages of the DC electric line and the energy storage element. Connector with an inductance coil is connected between the first electrode of the DC power line and an adjustable voltage source. Current sensor registers the current flowing through the connector with the inductance coil. Load status recording unit monitors the load status of the adjustable voltage source. Control circuit controls the adjustable voltage source using the current recorded by the current sensor to adjust the difference between the output voltages of the entire circuit and the energy storage element, and controls the adjustable voltage source according to the load status of the adjustable voltage source recorded by the load status recording unit.

EFFECT: technical result is the provision of an energy storage device capable of improving security and improving the controllability of the energy storage means and at the same time coping with a change in load and a change in the voltage of the contact wire.

19 cl, 7 dwg