Magnetic integrated devices, power conversion circuits, chargers and electric vehicles
A technology of integrated devices and conversion circuits, applied in the fields of magnetic integrated devices, power conversion circuits, chargers and electric vehicles, can solve the problems of large occupied space and large volume of magnetic integrated devices, and achieve high power density, small size, and reduced power consumption. The effect of small size and weight
Active Publication Date: 2021-05-14
HUAWEI DIGITAL POWER TECH CO LTD
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- Description
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Problems solved by technology
[0004] Due to the large number of windings in the magnetic integrated device, it occupies a large space, resulting in a large volume of the magnetic integrated device
Method used
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Embodiment Construction
[0063] The magnetic integrated device provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.
[0064] figure 1 It is a structural schematic diagram of a charger provided by an embodiment of the present invention, such as figure 1 As shown, the charger 01 may include an alternating current / direct current (AC / DC) conversion circuit 011, and a power conversion circuit 012, and the power conversion circuit 012 may also be called a DCDC power converter. Wherein, one end of the AC / DC can be connected to an AC power supply, and the other end can be connected to a DC bus, and the DC bus is connected to the power conversion circuit 012 .
[0065] In order to increase the power density, such as figure 1 As shown, the DCDC power converter 012 used in the charger 01 may be a three-port DCDC power converter. The three ports of the DCDC power converter 012 can be respectively used to connect the DC bus, the pow...
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The application provides a magnetic integrated device, a power conversion circuit, a charger and an electric vehicle, belonging to the technical field of power electronics. The magnetic integrated device includes: a magnetic core, a first transformer winding and a second transformer winding, wherein the first transformer winding and the second transformer winding are wound separately, and a first air gap is formed at the separation. Since the magnetic field line can pass through the first air gap to form a leakage inductance, the leakage inductance can be equivalent to the resonant inductance in the power conversion circuit, so it is not necessary to separately set the inductance winding in the magnetic integrated device, which effectively reduces the volume of the magnetic integrated device and weight. In addition, the volume of the power conversion circuit using the magnetic integrated device is also small, and the power density is high.
Description
technical field [0001] The present application relates to the technical field of power electronics, in particular to a magnetic integrated device, a power conversion circuit, a charger and an electric vehicle. Background technique [0002] A magnetic integrated device is a device that integrates multiple discrete devices (such as inductors and transformers) in a power conversion circuit. [0003] The magnetic integrated device includes a magnetic core, an inductor winding wound on the magnetic core, and a transformer winding wound on the magnetic core. Among them, the transformer winding usually includes three windings, namely a DC bus side winding, a high voltage winding and a low voltage winding. [0004] Since there are many windings in the magnetic integrated device and the occupied space is relatively large, the volume of the magnetic integrated device is relatively large. Contents of the invention [0005] This application provides a magnetic integrated device, a p...
Claims
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IPC IPC(8): H01F27/24H01F27/28H01F27/30H01F38/00H02M3/28B60L53/22
CPCH01F27/28H01F27/2823H01F27/306H01F27/24H01F27/2871H01F38/00H02M3/28B60L53/22Y02T10/70Y02T90/14Y02T10/7072H02M3/33573H02M1/008H02M3/33576H02M3/33584H02M3/01H01F3/14H01F27/40H01F27/2804H02M1/0074H01F27/346H01F27/38H02M3/285
Inventor 梁永涛刘卫平智彦军
Owner HUAWEI DIGITAL POWER TECH CO LTD