Voltage equalizing apparatus for battery devices

A voltage equalizing apparatus for battery devices comprising:

• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• a second battery device;
• a primary winding magnetically connected with the secondary windings through the core;
• and
• a second switching device connected in series with the second battery device and the primary winding to constitute a second closed circuit;
• wherein the first switching devices and the second switching device are alternately turned ON and OFF to equalize the output voltages of the first battery devices;
• when the first switching devices are turned ON, exciting energy stored in the core is transported to the second battery device through the second switching device;
• and
• the second switching device continues to be turned ON after completion of the transportation of the exciting energy.

An apparatus for equalizing circuit voltages, comprising:

• (a) a plurality of first circuits, each including:
• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• and
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• (b) a plurality of circuit equalizing windings, magnetically connected with the secondary windings through the cores, respectively, the circuit equalizing windings connected in parallel with each other;
• and
• (c) a second circuit including:
• a second battery device;
• an exciting winding magnetically connected with the secondary windings and the circuit equalizing windings;
• and
• a second switching device connected in series with the second battery device and the exciting winding to constitute a second closed circuit,
• wherein when the second switching device is turned ON, exciting energy stored in the cores is transported to the first battery devices through the first switching devices;
• and
• the first switching devices continue to be turned ON after completion of the transportation of the exciting energy.

An apparatus for equalizing circuit voltages, comprising:

• (a) a plurality of first circuits, each including:
• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• and
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• (b) a plurality of circuit equalizing windings, magnetically connected with the secondary windings through the cores, respectively, the circuit equalizing windings connected in parallel with each other;
• and
• (c) a second circuit including:
• a second battery device;
• an exciting winding magnetically connected with the secondary windings and the circuit equalizing windings;
• and
• a second switching device connected in series with the second battery device and the exciting winding to constitute a second closed circuit,
• wherein when the first switching devices are turned ON, exciting energy stored in the cores is transported to the second battery device through the second switching device;
• and
• the second switching device continues to be turned ON after completion of the transportation of the exciting energy.

A voltage equalizing apparatus for battery devices comprising:

• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• a second battery device;
• a primary winding magnetically connected with the secondary windings through the core;
• a second switching device connected in series with the second battery device and the primary winding to constitute a second closed circuit;
• and
• a controller for outputting a control signal for controlling the second switching device and the first switching devices to be alternately turned ON and OFF, thereby causing the energy transportation between the second battery device and each of the first battery devices to equalize the voltages of the first battery devices;
• wherein the controller sets the ON-duration ratio between the ON duration of the second switching device and the ON duration of the first switching devices so that the voltages of the first battery devices are to be a predetermined voltage.

A voltage equalizing apparatus for battery devices comprising:

• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• a second battery device;
• a primary winding magnetically connected with the secondary windings through the core;
• a second switching device connected in series with the second battery device and the primary winding to constitute a second closed circuit;
• and
• a controller for outputting a control signal for controlling the second switching device and the first switching devices to be alternately turned ON and OFF, thereby causing the energy transportation between the second battery device and each of the first battery devices to equalize the voltages of the first battery devices;
• wherein the controller sets the ON-duration ratio between the ON duration of the second switching device and the ON duration of the first switching devices so that the voltages of the first battery devices is to exceed a predetermined voltage;
• and
• wherein the controller resets the ON-duration ratio so that the voltages of the first battery devices become the predetermined voltage before the voltages of the first battery devices exceed the predetermined voltage.

A voltage equalizing apparatus for battery devices comprising:

• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• a plurality of second battery device interconnected in series with each other;
• a plurality of primary windings magnetically connected with each other through the core, and the primary windings magnetically connected with the secondary windings through the core;
• a plurality of second switching devices, each connected in series with one of the second battery devices and one of the primary windings to constitute a second closed circuit;
• and
• a controller for outputting a control signal for controlling the second switching devices and the first switching devices to be alternately turned ON and OFF, thereby causing the energy transportation between each of the second battery devices and each of the first battery devices to equalize the voltages of the second battery devices and/or the first battery devices;
• wherein the controller sets the ON-duration ratio between the ON duration of the second switching devices and the ON duration of the first switching devices so that the voltages of the second battery devices or the first battery devices become a predetermined voltage.

A voltage equalizing apparatus for battery devices comprising:

• a core;
• a plurality of first battery devices interconnected in series with each other;
• a plurality of secondary windings magnetically connected with each other through the core;
• a plurality of first switching devices, each connected to one of the secondary windings and one of the first battery devices to constitute a first closed circuit;
• a plurality of second battery device interconnected in series with each other;
• a plurality of primary windings magnetically connected with each other through the core, and the primary windings magnetically connected with the secondary windings through the core;
• a plurality of second switching devices, each connected in series with one of the second battery devices and one of the primary windings to constitute a second closed circuit;
• and
• a controller for outputting a control signal for controlling the second switching devices and the first switching devices to be alternately turned ON and OFF, thereby causing the energy transportation between each of the second battery devices and each of the first battery devices to equalize the voltages of the second battery devices and/or the first battery devices;
• wherein the controller sets the ON-duration ratio between the ON duration of the second switching devices and the ON duration of the first switching devices so that the voltages of the second battery devices or the first battery devices exceed a predetermined voltage;
• and
• the controller resets the ON-duration ratio so that the voltages of the second battery devices or the first battery devices become the predetermined voltage before the voltages of the second battery devices or the first battery devices exceed the predetermined voltage.