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Integrated DCDC system for hydrogen fuel-cell powered vehicle

A technology of fuel cells and automobiles, which is applied in the direction of battery/battery traction, vehicle components, hydrogen transportation technology, etc. It can solve the problems of unsatisfactory users, increased failure rate, and high cost, so as to reduce the failure rate, reduce ECU parts, The effect of high contribution rate

Pending Publication Date: 2019-10-01
WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Vehicle DCDC, including step-up DCDC, step-down DCDC and bidirectional DCDC, is an important application field of hydrogen fuel vehicle power system. How to integrate DCDC with DCDC function as the core is the current application direction in terms of lightweight and integration One, the current fuel cell DCDC, DCDC of auxiliary energy 1, and DCDC of auxiliary energy 2, in general, these three DCDCs are independent components, and have their own CPUs, water-cooling pipes and their control circuits, and the cost is relatively high. It also increases the failure rate and cannot meet the needs of users.

Method used

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Effect test

Embodiment 1

[0033] Embodiment one: refer to Figure 1-2 , an integrated DCDC system for hydrogen fuel cell vehicles, including a control board and a power board, the control board is provided with a relay and a fuse, and the control board is provided with an input interface, and there are three input interfaces, namely input 1, Input 2 and input 3, IGBT components are set on the power board, and output interfaces are set on the power board, and there are two output interfaces in total, namely output 1 and output 2, the control board and the power board directly use pins Connection, input 1 is the high-voltage output of the hydrogen fuel cell system, input 2 is the high-voltage output of auxiliary energy 1, input 3 is the high-voltage output of auxiliary energy 2, output 1 is the 12V battery, and output 2 is the high-voltage power distribution unit PDU.

Embodiment 2

[0034] Embodiment two: refer to figure 2 , The IGBT component is a composite fully-controlled voltage-driven power semiconductor device composed of BJT (bipolar transistor) and MOS (insulated gate field effect transistor), which has both high input impedance of MOSFET and low conduction voltage drop of GTR. The saturation voltage of GTR is reduced, the current carrying density is large, but the driving current is large; the driving power of MOSFET is small, the switching speed is fast, but the conduction voltage drop is large, and the current carrying density is small. IGBT combines the advantages of the above two devices, and the driving power Small and low saturation pressure. It is very suitable for the conversion system with a DC voltage of 600V and above, such as AC motors, frequency converters, switching power supplies, lighting circuits, and traction drives. The IGBT module has the characteristics of energy saving, convenient installation and maintenance, and stable he...

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Abstract

The invention discloses an integrated DCDC system for a hydrogen fuel-cell powered vehicle. The integrated DCDC system comprises a control board and a power board, wherein a relay and a fuse are arranged on the control board; three input interfaces in total which are separately the input interface 1, the input interface 2 and the input interface 3, are arranged on the control board; an IGBT element is arranged on the power board; two output interfaces in total which are separately the output interface 1 and the output interface 2, are arranged on the power board; and the control board and thepower board are directly connected through a way of adopting a contact pin. According to the integrated DCDC system, control units in original separating type parts are integrated as one control unit,so that DCDCs of the whole vehicle are combined into one part which can be applied to the fuel-cell powered vehicle; and high-integration DCDCs effectively reduce harness circuits, and are high in alight-weight contribution rate of wiring harnesses, so that ECU parts of the whole vehicle are also reduced, and production, design and management cost is reduced.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cell vehicles, in particular to an integrated DCDC system for hydrogen fuel cell vehicles. Background technique [0002] Fuel cell vehicles, as a true "zero-emission, pollution-free" vehicle, are one of the main development directions of new energy and clean power vehicles in the future. The further research and development and mass production of hydrogen fuel cell vehicles will surely become a new revolution in the field of the global automobile industry. car) is its unique powertrain. The core component of a fuel cell vehicle is the power system. Oxygen fuel cell vehicles with various structural forms use "fuel cell + electric motor" to replace the "engine and fuel system" of the traditional internal combustion engine vehicle power system, and the power system has a large Changes: the fuel cell replaces the engine as the main driving power source of the car, and at the same time adds the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02B60L50/70
CPCB60R16/02B60L50/70Y02T90/40
Inventor 余红霞安元元程飞熊洁陈华明郝义国
Owner WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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