Control device of starting and generating integrated system used for small-sized internal-combustion engine

A technology for starting power generation and control device, which is applied in the direction of motor generator control, engine starting, engine motor starting, etc. It can solve the problems of reverse current and device damage, achieve simple circuit structure, simplify equipment structure, and avoid current impact. Effect

Active Publication Date: 2010-08-18
CHENGDU POWER BUREAU +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the motor is used as a starter and a generator, its direction of rotation remains unchanged, but its current is reversed. Therefore, if the starting circuit is not disconnected in time, it will cause a large current impact in the circuit and cause damage to the device.

Method used

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  • Control device of starting and generating integrated system used for small-sized internal-combustion engine
  • Control device of starting and generating integrated system used for small-sized internal-combustion engine

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0014] Because the directions of power generation and starting current are opposite, in order to ensure that after mechanical conversion, the starting circuit can be converted in time and the power generation circuit stops active power supply, so as to ensure that the generator will not be burned due to reverse power supply, and an electronic conversion mechanism must be installed.

[0015] figure 1 As shown, the engine starting circuit is as follows: the signal output terminal of the Hall sensor used to measure the engine speed signal is connected to the input terminal of the starting board STC12C5412AD, and the first output terminal of the starting board is connected to the grid plate G1 of the first field effect tube. The source S1 of the first FET is grounded, and a resistor R4 is connected in series between the source S1 and the grid G1, the drain D1 of the first...

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Abstract

The invention relates to a control device of a starting and generating integrated system used for a small-sized internal-combustion engine. A starting circuit and a generating circuit mainly comprise a starting board, two relays, two field-effect tubes and a rectification voltage-stabilizing charging circuit. The switching moment of starting and generating is determined by utilizing the minimum stable idle speed after an engine is started as the standard, and the starting state is switched to the generating state when the speed of the engine reaches or is higher than the stable idle speed; the generating state is switched to the starting state when the speed of the engine is lower than the stable idle speed. The switching of the starting circuit and the generating circuit is controlled by a singlechip through the relays and an electronic switch. The invention has the characteristics of simple circuit design and reliable switching control and can effectively avoid current impact caused in switching the starting state and the generating state.

Description

technical field [0001] The invention relates to an automatic control device for motor starting and motor power generation, in particular to an automatic control device for an integrated system of starting and generating power for a small engine. Background technique [0002] When the motor is used as a starter and a generator, its steering direction remains unchanged, but its current is reversed. Therefore, if the starting circuit is not disconnected in time, it will cause a large current impact in the circuit and cause damage to the device. In order to solve the above problems, a corresponding conversion control circuit must be installed. [0003] At the same time, the applicant proposed "integrated structure for starting and generating power for small internal combustion engines, that is, a set of mechanisms is used to mount on small internal combustion engines (i.e. engines), and the engine can be started to rotate when actively supplying power, and the engine can be used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08H02P11/00H02H7/06
Inventor 罗雪梅吴伟民杜军王雷周炜张铭明
Owner CHENGDU POWER BUREAU
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