Efficient and high-power vehicle-mounted DCDC power supply

A high-power, power-supply technology that is applied to output power conversion devices, conversion of DC power input to DC power output, and electric vehicles. Troublesome operation and other problems, to achieve the effect of light weight, magnetic core size reduction, and low cost
CN108512423APending Publication Date: 2018-09-07WETOWN ELECTRIC GRP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WETOWN ELECTRIC GRP CO LTD
Publication Date
2018-09-07

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Abstract

The invention discloses an efficient and high-power vehicle-mounted DCDC power supply. The output positive electrode of a vehicle-mounted fuel cell is connected with a first contactor and a first electric reactor in sequence through a fuse; the output negative electrode of the fuel cell is connected with a second contactor; the output ends of the first electric reactor and the second contactor areconnected with a first capacitor in parallel; the first capacitor is connected with a filter through a DC / DC conversion circuit; the output positive electrode end of the filter is connected to a loadpower battery through a reversion preventing diode; and the DC / DC conversion circuit adopts a dual Boost topological structure which is formed by a primary boost circuit and a secondary boost circuitin a reversely staggered and parallel connection manner. The instable low voltage output by the fuel cell is converted into a stable high voltage to be stored in the power battery to be used by equipment and the driving motor on the vehicle; and the power supply is high in power output efficiency, small in size and light in weight, less in raw material loss and low in cost.
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Description

technical field

[0001] The invention relates to a high-efficiency and high-power vehicle-mounted DCDC power supply. Background technique

[0002] As the problem of environmental pollution becomes more and more prominent, traditional petroleum energy can no longer meet the power demand of the current automobile industry. Fuel cells with superior performance are widely considered to be the best choice for future electric vehicle energy solutions; fuel cells are a kind of energy that will exist in The chemical energy in the fuel and oxidant is directly converted into a power generation device for electric energy. The fuel of the hydrogen fuel cell is hydrogen and oxygen, and the reaction product is only water. Therefore, the hydrogen fuel cell vehicle has achieved zero emission and zero pollution in the true sense.

[0003] Due to the low output voltage of hydrogen fuel cells, large fluctuations, and relatively soft output characteristics; if the fuel cell is used as a direct d...

Claims

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