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Controller of vehicle-mounted hydrogen system

A hydrogen system and controller technology, applied in the field of hydrogen fuel cell vehicles, can solve problems such as difficult sensor compatibility, difficulty in realizing communication between hydrogen refueling stations and on-board hydrogen systems, and achieve the effect of improving safety

Pending Publication Date: 2022-04-15
SHANDONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, different models will use cylinders with different operating pressures, and the hydrogen concentration sensors equipped with them also have different power supply voltages and signal types, and the hydrogen system controller needs to maintain communication with the hydrogen refueling station during the hydrogen refueling process to ensure the refueling process. The safety of the hydrogen process makes it difficult for the current hydrogen system controller to achieve compatibility with gas cylinders of different pressures, sensors of different supply voltages and signal types, and thus it is difficult to realize the communication between the hydrogen refueling station and the on-board hydrogen system

Method used

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  • Controller of vehicle-mounted hydrogen system
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  • Controller of vehicle-mounted hydrogen system

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Embodiment 1

[0035] Such as figure 1 As shown, the purpose of this embodiment is to provide a controller for a vehicle-mounted hydrogen system, including a power supply circuit 2 connected to a processor 1, an analog input circuit 6, a PWM signal processing circuit 9, a digital input processing circuit 11, Serial port communication circuit 13, PWM driving circuit 16 and CAN communication circuit;

[0036] The power supply circuit 2 is connected to the PWM signal type hydrogen concentration sensor 8 through the 12V regulated power supply circuit 7, and the PWM signal type hydrogen concentration sensor 8 is connected to the processor 1 through the PWM signal processing circuit 9;

[0037] The power supply circuit 2 is respectively connected to the active sensor 4 and the passive sensor 5 through the 5V regulated power supply circuit 3, the active sensor 4 and the passive sensor 5 are all connected to the processor 1 through the analog input circuit 6, and the passive sensor 5 is also connect...

Embodiment 2

[0069] Such as figure 2 As shown, the purpose of this embodiment is to provide a vehicle-mounted hydrogen system installed with the controller in Embodiment 1.

[0070] The on-board hydrogen system includes a hydrogen system controller 101, an infrared communication unit 108, and a fuel cell system 109 connected through a hydrogen system wiring harness 102 (it can also be a vehicle control system, depending on different models, and the batteries in some models have separate control systems. system), the hydrogen system controller 101 is the controller in the first embodiment.

[0071] The hydrogen system controller 101 is connected with a hydrogen concentration sensor 1012 , a temperature sensor and a pressure sensor 105 .

[0072] The fuel cell system 109 is connected to at least one group of high-pressure hydrogen storage bottles 103 through pipelines. The high-pressure hydrogen storage bottles 103 have integrated bottle mouth valves 104 , and the pipelines are provided wi...

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Abstract

The invention relates to a controller of a vehicle-mounted hydrogen system. The controller comprises a power supply circuit, a PWM (Pulse Width Modulation) driving circuit and a CAN (Controller Area Network) communication circuit which are respectively connected with a processor, the PWM drive circuit is used for being connected with the PWM drive control type bottle opening valve, and the bottom side drive circuit or the high side drive circuit connected with the CAN communication circuit is used for being connected with the switch type bottle opening valve. The controller can be compatible with gas cylinder valves with different use pressures in a 35MPa vehicle-mounted hydrogen storage / supply system and a 70MPa vehicle-mounted hydrogen storage / supply system, and control signal transmission of a 35MPa switch type cylinder valve and a 70MPa PWM type cylinder valve is met.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cell vehicles, in particular to a controller for a vehicle-mounted hydrogen system. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The main energy of hydrogen fuel cell vehicles comes from hydrogen. In the on-board hydrogen storage, gas cylinders are used as storage containers to store gaseous hydrogen through compression. At present, the vehicle-mounted hydrogen storage cylinder uses a forged aluminum alloy as the inner tank and a carbon fiber-coated gas cylinder as the main storage container. The operating pressure mainly has two types: 35MPa and 70MPa. [0004] In the process of use, due to the high pressure of the 70MPa gas cylinder, due to safety requirements, the bottle mouth valve of the 70MPa gas cylinder needs high-frequency PWM drive to open th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/04082H01M8/04089H01M8/04992
CPCY02E60/50
Inventor 白培瑞梁满志崔振宇刘庆一傅颖霞韩超王丹丹
Owner SHANDONG UNIV OF SCI & TECH