Electric current transducer used for automobile and based on zero magnetic flux compensation

A current sensor and current compensation technology, applied in electric vehicles, measuring current/voltage, using engine-driven traction, etc., can solve problems such as unfavorable application promotion, expansion of sensor space, complex electrical environment and working environment, etc. Compensation, miniaturization, and zero-flux effects

Inactive Publication Date: 2013-05-08
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] exist figure 1 In the current sensor shown, the auxiliary core T2 and the detection winding N 0 and compensation winding N 3 The addition of the sensor will expand the footprint of the sensor, which is unfavorable for t...

Method used

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  • Electric current transducer used for automobile and based on zero magnetic flux compensation
  • Electric current transducer used for automobile and based on zero magnetic flux compensation
  • Electric current transducer used for automobile and based on zero magnetic flux compensation

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Embodiment Construction

[0069] The present invention is illustrated below by describing specific embodiments of the present invention with reference to the accompanying drawings. However, it should be understood that these specific embodiments are only exemplary, and have no limiting effect on the spirit and protection scope of the present invention.

[0070] In this specification, the word "coupling" should be understood as including the situation of direct transmission of energy or signals between two units, or the situation of indirect transmission of energy or signals via one or more third units, and the Signals include, but are not limited to, those in electrical, optical, and magnetic forms. In addition, terms such as "comprising" and "comprising" indicate that in addition to the units and steps that are directly and explicitly stated in the specification and claims, the technical solution of the present invention does not exclude any elements that are not directly or explicitly stated. The si...

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Abstract

The invention relates to an electric current measurement technology, in particular to an electric current transducer suitable for measuring an output current of an automobile alternating-current generator in a mutual inductance mode, a double-storage-battery automobile power supply system including the electric current transducer, and a hybrid electric automobile adopting the double-storage-battery automobile power supply system. The electric current transducer used for an automobile and based on zero magnetic flux compensation comprises a magnetic core wound by an output wire of the automobile alternating-current generator, a secondary winding wound on the magnetic core, a detection winding wound on the magnetic core and a magnetic flux compensation device coupled between the secondary winding and the detection winding, wherein the magnetic flux compensation device supplies compensating current for the secondary winding according to potential difference between two ends of the detection winding, and the potential difference is enabled to tend to zero. According to the electric current transducer used for the automobile and based on the zero magnetic flux compensation, due to the fact that an auxiliary magnetic core and a compensating winding are saved, microminiaturization of the transducer is facilitated.

Description

technical field [0001] The invention relates to current measurement technology, in particular to a current sensor suitable for measuring the output current of an automobile alternator in a mutual inductance manner, a dual storage battery vehicle power supply system including the current sensor, and a hybrid electric vehicle using the dual storage battery vehicle power supply system. Background technique [0002] The alternator is an indispensable electrical energy generating device in regular cars and hybrid cars. For an automobile's electrical system to function reliably, the output of the alternator, the capacity of the battery, the electrical demand of the starter, and other electrical loads must be properly matched to each other. To this end, accurate measurement of the alternator's output current is a key element. Although the output power of the generator can be determined according to the rotational speed of the engine, this indirect method is unreliable in some case...

Claims

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Application Information

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IPC IPC(8): G01R19/00B60L11/02B60L50/10
CPCY02T10/7077Y02T10/7072
Inventor 邓恒杨凯张崇生郝飞
Owner SAIC MOTOR
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