Abstract

The present invention relates to a bidirectional isolated converter that improves efficiency by increasing the power ratio transmitted from a first bridge. The converter comprises: a first bridge having at least one switch leg; a second bridge connected in parallel with the first bridge and also having a switch leg; a first transformer connected to the first bridge; a second transformer connected to the second bridge, wherein its secondary side is connected in series with the secondary side of the first transformer; a third bridge connected to the first transformer and second transformer secondary sides, with an output terminal for a load; and a control unit that switches the second and third bridges between boost and buck modes.

IPC Classes  ?

• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 1/00 - Details of apparatus for conversion
• H02M 3/00 - Conversion of DC power input into DC power output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

One embodiment provides a bridgeless totem-pole single stage AC-DC converter comprising: a low-frequency switch unit connected to an alternating current terminal; a primary-side high-frequency switch unit connected to the alternating current terminal and a primary winding of an isolation transformer; a secondary-side high-frequency switch unit connected to a secondary winding of the isolation transformer and a direct current power device; and a controller for synchronizing an ON/OFF operation of one switch of the low-frequency switch unit and a swap operation, between a primary-side carrier for controlling the primary-side high-frequency switch unit and a secondary-side carrier for controlling the secondary-side high-frequency switch unit, at a zero-crossing time point of an alternating current voltage.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• B60L 53/22 - Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• B60L 55/00 - Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters

Abstract

An embodiment provides a three-phase single stage AC-DC converter comprising: single stage AC circuits rectifying and converting power for each phase of three-phase AC power; transformers having a primary side connected to the single stage AC circuits, disposed at least one for each phase, and outputting the transformed power for each phase to at least one secondary side terminal; and at least one full bridge DC circuit combining and rectifying the power transformed by the transformers, for each phase, in series or parallel, and outputting the power.

IPC Classes  ?

• H02M 7/23 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
• H02M 1/00 - Details of apparatus for conversion

Abstract

Disclosed is a multi-port charger capable of charging a higher-voltage battery by boosting low DC charging voltage using an on-board charger (OBC) installed in a vehicle without adding a separate part or device and capable of being used for various applications, such as V2G and V2L, in addition to charging.

IPC Classes  ?

• B60L 53/22 - Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• B60L 55/00 - Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• H02M 1/14 - Arrangements for reducing ripples from DC input or output
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/86 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by dynamic converters

Abstract

An integrated charger includes a first isolated charger configured to convert AC voltage input from the outside into first DC voltage for charging a first battery and to provide the converted voltage to the first battery and a second isolated charger including a transformer having a first winding wire connected to a switching circuit of the first isolated charger connected to the first battery and a second winding wire electromagnetically coupled to the first winding wire to convert the magnitude of voltage of the first winding wire and to output the voltage having the converted magnitude and a rectification circuit configured to rectify the voltage of the second winding wire into second DC voltage having a smaller magnitude than the first DC voltage and to provide the rectified voltage to a second battery.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• B60L 53/22 - Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• H02M 1/084 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters using a control circuit common to several phases of a multi-phase system
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Goods & Services

Battery charging devices for motor vehicles; AC/DC power supplies; inverters; power inverters; Electronic inverter controllers for controlling the conversion of direct current and alternating current; electric power controllers; current rectifiers; electric transformers; electric power converters; DC/DC converters

Abstract

The present invention relates to an inverted buck-boost-type integrated charger and, more specifically, to an inverted buck-boost-type integrated charger to be applied to a vehicle to which an exchangeable battery is applied. The objective of the inverted buck-boost-type integrated charger according to the present invention is to provide, in an electric vehicle to which an exchangeable charging system is applied, an inverted buck-boost-type integrated charger that is relatively economical, enables implementation in small volumes, and has a simple structure.

IPC Classes  ?

• B60L 53/22 - Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
• H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
• H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load