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Energy management system of mixed power device based on fuel cell

An energy management system and fuel cell system technology, applied in the energy management of hybrid power devices and the field of electric-electric hybrid power devices, can solve the problems of large discharge current variation of power batteries, short life of power battery packs, and control hysteresis. Achieve the effect of realizing energy balance matching, improving dynamic performance and increasing reliability

Active Publication Date: 2010-07-28
SUNRISE POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this hybrid power device based on fuel cells is that the control has hysteresis, which often causes the discharge current of the power battery to change too much, resulting in a short life of the power battery pack and low safety.

Method used

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  • Energy management system of mixed power device based on fuel cell
  • Energy management system of mixed power device based on fuel cell
  • Energy management system of mixed power device based on fuel cell

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the embodiment of accompanying drawing.

[0020] attached figure 1 Presented is an electric-electric hybrid series powerplant. by following figure 1 The way shown is to connect each subsystem to form. In this embodiment, when the switch K1 is closed, it is a pure electric mode, and when the switches K1 and K2 are closed simultaneously, it is a hybrid mode.

[0021] figure 2 is the system structure diagram. The load energy demand and fuel cell auxiliary energy demand model unit of its energy management controller (VMS) adopts the least square method (RLS) to establish the energy demand model of the load and fuel cell system. The state-of-charge calculation unit and the state-of-charge regulator are functional modules in the energy management controller, which are specifically implemented by programs.

[0022] The energy management controller (VMS) collects the load control signal from the ...

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Abstract

The invention relates to an energy management system of a mixed power device based on a fuel cell, comprising an energy management controller formed by connecting a load energy demand and fuel cell auxiliary energy demand model unit, a charge state calculating unit and a charge state regulator through a signal wire. The energy management controller collects load control signals, the charge state calculating unit collects the real-time charge state values of power cells, and the energy management controller is connected with a fuel cell controller and a direct-current converter of a fuel cell system through a controller area network (CAN) and transmits the control signals. The invention has the advantages of reducing the cost, improving the reliability of the system, realizing the energy harmonious matching of a fuel cell power system and the follow-up control of the charging current of a power cell pack, improving the dynamic properties of the fuel cell system when the power device runs, prolonging the service life of the power cell pack and enhancing the safety of the power cells, and has the advantages of intelligentization, high reliability, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of hybrid power devices, in particular relates to a fuel cell-based electric-electric hybrid power device, and in particular relates to energy management of the hybrid power device. Background technique [0002] Due to the low emission characteristics of the hybrid power plant, it has become the focus of research in the power field. There are currently two types of hybrid power devices: according to the type of energy, they are divided into electric-electric hybrid and oil-electric hybrid; according to the form of the drive system, they are divided into parallel type and series type. [0003] At present, most fuel cell-based hybrid power devices are electric-electric hybrid series. The fuel cell system adopts a passive control method to control the working power of the fuel cell and the output of the DC converter according to the load current. The disadvantage of this hybrid power device based on fuel cells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/32H01M8/04H01M10/44H01M8/04082H01M8/04858
CPCY02T90/34Y02E60/50Y02E60/12Y02E60/10Y02T90/40
Inventor 李加良侯中军孙德尧王克勇高全勇明平文刘常福
Owner SUNRISE POWER CO LTD
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