Hydrogen fuel cell auxiliary power supply system and electromagnetic compatibility rectification circuit thereof

A fuel cell and power supply system technology, which is applied in battery/battery traction, current collectors, power management, etc., can solve problems such as low anti-interference and poor electromagnetic compatibility, and achieve poor electromagnetic compatibility, prolong service life, shorten The effect of EMC design optimization time

Active Publication Date: 2021-09-03
SHENZHEN LANDE AUTOMOBILE POWER SUPPLY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a hydrogen fuel cell auxiliary power supply system and its electromagnetic compatibility rectification circuit, and solve the problems of poor electromagnetic compatibility and low anti-interference in the traditional hydrogen fuel cell auxiliary power supply system question

Method used

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  • Hydrogen fuel cell auxiliary power supply system and electromagnetic compatibility rectification circuit thereof
  • Hydrogen fuel cell auxiliary power supply system and electromagnetic compatibility rectification circuit thereof
  • Hydrogen fuel cell auxiliary power supply system and electromagnetic compatibility rectification circuit thereof

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Embodiment 1

[0036] Such as figure 1 As shown, the present invention provides an auxiliary power supply system for a hydrogen fuel cell. The hydrogen fuel cell includes a hydrogen and oxygen supply system, a cooling system, a main controller and a PE interface of the casing.

[0037] The hydrogen fuel cell auxiliary power supply system includes a battery auxiliary power supply circuit and an electromagnetic compatibility rectification circuit; the battery auxiliary power supply circuit includes a non-isolated DC / DC converter, a first isolated DC / DC converter and a second isolated DC / DC converter; The electromagnetic compatibility correction circuit includes a first filter circuit, a second filter circuit, a third filter circuit, a fourth filter circuit and a fifth filter circuit.

[0038] The input end of the first filter circuit is connected to the high-voltage lithium battery of the vehicle, which filters the ripple in the output voltage of the high-voltage lithium battery of the vehicle...

Embodiment 2

[0044] Such as figure 2 and 3 As shown, in the electromagnetic compatibility rectification circuit of Embodiment 1, capacitors C110μ, C30μ, C20μ, C100n, C10n, C1n, and C100p are preferably farad capacitors, and capacitors C110μ=110μF, C30μ=30μF, C20μ=20μF, C100n=100nF, C10n =10nF, C1n=1nF, C100p=100pF. The capacitor CY is preferably a Y capacitor, and CY1 to CY48 are all Y capacitors CY=10nF.

[0045] Inductors L1, L2, L7, L8, L13, L14, L17, L19 and L20 are preferably nickel-zinc magnetic ring common-mode inductors. L1=L2=L17=L19=L20=30 μH, L7=L8=L13=L14=70 μH.

[0046] Inductors L3, L4, L9, L10, L15, L16, L18, L21, L22, L23, L24, L25, L26, L27 and L28 are preferably amorphous magnetic ring common mode inductors. L3=L4=L21=L22=2300 μH; L9=L10=L15=L16=L18=3500 μH; L23=L24=L25=L26=L27=L28=70 μH.

[0047] The inductor LC is preferably a differential mode inductor, L5, L6, L11, and L12 are LC=12μH, and the diodes D1 and D2 are preferably transient voltage suppression diodes ...

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PUM

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Abstract

The invention relates to a hydrogen fuel cell auxiliary power supply system and an electromagnetic compatibility rectification circuit thereof. A hydrogen fuel cell comprises a hydrogen and oxygen supply system, a cooling system, a main controller and a shell ground PE interface. The hydrogen fuel cell auxiliary power supply system comprises a cell auxiliary power supply circuit and an electromagnetic compatibility rectification circuit. The cell auxiliary power supply circuit comprises a non-isolated DC / DC converter, a first isolated DC / DC converter and a second isolated DC / DC converter. The electromagnetic compatibility rectification circuit comprises a first filter circuit connected with a whole vehicle high-voltage lithium battery, a second filter circuit connected with a whole vehicle control and communication interface, and a third filter circuit connected with a hydrogen supply and oxygen supply system of the hydrogen fuel cell; a fourth filter circuit which is connected with the hydrogen fuel cell cooling system; and a fifth filter circuit which is connected with the hydrogen fuel cell main controller. The electromagnetic compatibility and the service life of the hydrogen fuel cell can be effectively improved, and the economical efficiency, the safety and the stability of a hydrogen fuel cell automobile are improved.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a hydrogen fuel cell auxiliary power supply system and an electromagnetic compatibility rectification circuit thereof. Background technique [0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Compared with the traditional way of generating electricity by combustion (gasoline, diesel) or energy storage (battery), it generates electricity through electrochemical reactions, and fuel cells generate electricity. Only water and heat are produced, and there is no pollution to the environment; at the same time, the power generation efficiency can reach more than 50%, and the chemical energy is directly converted into electrical energy without intermediate conversion of thermal energy and mechanical energy (generator), so the power generation efficiency is high. [0003] Due to the noiseles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L1/00B60L50/70H02M1/44
CPCB60L1/00B60L50/70H02M1/44Y02E60/50
Inventor 石画
Owner SHENZHEN LANDE AUTOMOBILE POWER SUPPLY TECHCO
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