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Fuel cell hybrid power mobile welding robot energy management method

A welding robot, fuel cell technology, applied in current collectors, electric vehicles, battery circuit devices, etc., can solve the problems of long single charging time, short service life, large volume and weight, etc. The effect of rapid changes and extended service life

Active Publication Date: 2018-07-27
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] Mobile welding robots are more and more widely used in the fields of modern shipbuilding, petroleum, machinery, chemical industry and aerospace, such as welding of large ship cabins, decks, hulls, welding of large spherical tanks and field docking of large oil pipelines Operations, underwater operations, etc., but mobile welding robots generally use batteries as their power or cable power supply to drive, and batteries have disadvantages such as low power density, long single charging time, short service life, and large volume and weight. Length and environmental impact, both of which greatly limit the application of mobile welding robots in the above fields

Method used

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  • Fuel cell hybrid power mobile welding robot energy management method
  • Fuel cell hybrid power mobile welding robot energy management method
  • Fuel cell hybrid power mobile welding robot energy management method

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Embodiment

[0048] Such as figure 1 As shown, a mobile welding robot based on fuel cell hybrid power includes a mobile welding robot body, a robot drive controller, and a power supply. The power supply supplies power to the robot drive controller with a 24V DC voltage. The welding robot body performs operation control, and the power supply mainly includes main power supply, auxiliary power supply and energy management unit. The main power supply is a proton exchange membrane fuel cell, and the auxiliary power supply is a lithium battery. The output end of the fuel cell is electrically connected to the DC bus through a unidirectional step-up DC / DC converter, and the output end of the lithium battery is electrically connected to the DC bus through a bidirectional step-up DC / DC converter. Connected to the DC bus, the energy management unit is respectively connected to the mobile welding robot, fuel cell, lithium battery and single / bidirectional DC / DC converter. The energy management unit de...

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Abstract

The invention relates to a fuel cell hybrid power mobile welding robot energy management method, which is mainly used for managing a fuel cell system unit to charge a lithium battery unit and a hybridpower system to power a robot as a whole and constructing an energy management unit electrically connected with the fuel cell system unit and the lithium battery unit. According to the real-time robot load power demand, combined with the real-time state of charge (SOC) of a lithium battery, a hybrid power system is divided into nine operating modes to ensure that a fuel cell operates in a constant power or load balancing state. Compared with the prior art, the method of the invention avoids the change brought by continuous disturbance of the fuel cell output characteristics, makes up for thedeficiency of dynamic performance of the fuel cell, and further improves the power supply reliability and service life of the mobile welding robot under the drive of the fuel cell / lithium battery hybrid power.

Description

technical field [0001] The invention relates to the control technology of a hybrid power system, in particular to an energy management method for a fuel cell hybrid power mobile welding robot. Background technique [0002] Mobile welding robots are more and more widely used in the fields of modern shipbuilding, petroleum, machinery, chemical industry and aerospace, such as welding of large ship cabins, decks, hulls, welding of large spherical tanks and field docking of large oil pipelines Operations, underwater operations, etc., but mobile welding robots generally use batteries as their power or cable power supply to drive, and batteries have disadvantages such as low power density, long single charging time, short service life, and large volume and weight. Both length and environmental impact greatly limit the application of mobile welding robots in the above fields. [0003] In order to better solve the above problems in the power system of the mobile welding robot, and m...

Claims

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Application Information

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IPC IPC(8): H02J1/00H02J7/34
CPCH02J1/00H02J7/34H02J2300/30
Inventor 吕学勤苗兴钦超王敏顾冬霞李新宇
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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