Electric energy storage apparatus capable of AC output
First Claim
1. An electric energy storage apparatus comprising:
- an electric energy storage module group formed by connecting in series two or more electric energy storage modules each comprising one or more electric energy storage elements;
a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules;
a switch group comprising two or more switches each provided in a path connecting a first connection point and a terminal of one of the series-connected electric energy storage modules; and
a positive-negative inversion circuit having, as an input section, the first connection point and a second connection point electrically connected to one of the terminals of the series-connected electric energy storage modules, the positive-negative inversion circuit being configured to connect the first connection point and the second connection point to one of output terminals respectively,wherein the electric energy storage apparatus is configured to perform a switch changeover in the switch group so as to select a magnitude of an output voltage depending on a configuration of the electric energy storage elements present in a path connecting the first and second connection points, and cause the positive-negative inversion circuit to select a polarity of the output voltage depending on the output terminals connected to respective ones of the first and second connection points.
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Accused Products
Abstract
An electric energy storage apparatus can generate an AC output in a low-loss and low-noise manner without using a DC-DC converter or an inverter. The electric energy storage apparatus comprises: an electric energy storage module group formed by connecting in series electric energy storage modules each comprising one or more electric energy storage elements; a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules; a first switch group comprising switches each in a path connecting a first terminal and a terminal of one of the series-connected electric energy storage modules; and a second switch group comprising switches each in a path connecting a second terminal and a terminal of one of the series-connected electric energy storage modules. The electric energy storage apparatus may perform a switch changeover in the switch groups.
19 Citations
15 Claims
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1. An electric energy storage apparatus comprising:
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an electric energy storage module group formed by connecting in series two or more electric energy storage modules each comprising one or more electric energy storage elements; a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules; a switch group comprising two or more switches each provided in a path connecting a first connection point and a terminal of one of the series-connected electric energy storage modules; and a positive-negative inversion circuit having, as an input section, the first connection point and a second connection point electrically connected to one of the terminals of the series-connected electric energy storage modules, the positive-negative inversion circuit being configured to connect the first connection point and the second connection point to one of output terminals respectively, wherein the electric energy storage apparatus is configured to perform a switch changeover in the switch group so as to select a magnitude of an output voltage depending on a configuration of the electric energy storage elements present in a path connecting the first and second connection points, and cause the positive-negative inversion circuit to select a polarity of the output voltage depending on the output terminals connected to respective ones of the first and second connection points. - View Dependent Claims (3, 4, 5, 6, 7, 15)
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2. An electric energy storage apparatus comprising:
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an electric energy storage module group formed by connecting in series two or more electric energy storage modules each comprising one or more electric energy storage elements, each of the electric energy storage modules being connected to a DC power supply; a switch group comprising two or more switches each provided in a path connecting a first connection point and a terminal of one of the series-connected electric energy storage modules; and a positive-negative inversion circuit having, as an input section, the first connection point and a second connection point electrically connected to one of the terminals of the series-connected electric energy storage modules, the positive-negative inversion circuit being configured to connect the first connection point and the second connection point to one of output terminals respectively, wherein the electric energy storage apparatus is configured to perform a switch changeover in the switch group so as to select a magnitude of an output voltage depending on a configuration of the electric energy storage elements present in a path connecting the first and second connection points, and cause the positive-negative inversion circuit to select a polarity of the output voltage depending on the output terminals connected to respective ones of the first and second connection points.
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8. An electric energy storage apparatus comprising:
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an electric energy storage module group formed by connecting in series two or more electric energy storage modules each comprising one or more electric energy storage elements; a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules; a first switch group comprising two or more switches each provided in a path connecting a first terminal and a terminal of one of the series-connected electric energy storage modules; and a second switch group comprising two or more switches each provided in a path connecting a second terminal and a terminal of one of the series-connected electric energy storage modules, wherein the electric energy storage apparatus is configured to perform a switch changeover in the first and second switch groups so as to select a magnitude and polarity of an output voltage depending on a configuration of the electric energy storage elements present in a path connecting the first and second terminals. - View Dependent Claims (10, 11, 12, 13, 14)
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9. An electric energy storage apparatus comprising:
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an electric energy storage module group formed by connecting in series two or more electric energy storage modules each comprising one or more electric energy storage elements, each of the electric energy storage modules being connected to a DC power supply; a first switch group comprising two or more switches each provided in a path connecting a first terminal and a terminal of one of the series-connected electric energy storage modules; a second switch group comprising two or more switches each provided in a path connecting a second terminal and a terminal of one of the series-connected electric energy storage modules, wherein the electric energy storage apparatus is configured to perform a switch changeover in the first and second switch groups so as to select a magnitude and a polarity of an output voltage depending on a configuration of the electric energy storage elements present in a path connecting the first and second terminals.
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Specification