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Current sensing device and method

A current sensing and current transformer technology, applied in measuring devices, only measuring current, measuring current/voltage, etc., can solve problems such as current sensing errors

Active Publication Date: 2020-09-25
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the diode may cause unexpected errors in current sensing

Method used

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  • Current sensing device and method
  • Current sensing device and method
  • Current sensing device and method

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Embodiment Construction

[0030] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0031] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that when used in this specification, the term "comprises" and / or "comprises" defines the existence of the features, integers, steps, operations, elements, and / or elements, but does not exclude The presence or addition of one or more other features, integers, steps, operations, elements, elements, and / or collections thereof. As used herein, the term "and / or" includes any and all combinations o...

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Abstract

A current sensing apparatus includes: a temperature sensor configured to sense a temperature of a power converter; a current sensing unit configured to sense an input current of the power converter; and a central processing unit (CPU) configured to control an operation of the power converter in response to the sensed temperature of the power converter and the sensed input current of the power converter. The CPU includes a compensation unit configured to store, upon receiving an indication of the sensed temperature of the power converter from the temperature sensor, an operation voltage of at least one diode included in the current sensing unit in a map, and to compensate for an error of a sensing current based on the stored operation voltage when the current sensing unit senses the input current.

Description

technical field [0001] The present invention relates to a current sensing device, and more particularly to a technology for improving current sensing accuracy through temperature compensation when current is sensed by a current transformer (CT). Background technique [0002] It is well known that vehicles with internal combustion engines cause environmental pollution or energy depletion due to excessive energy consumption. Accordingly, vehicles using electricity as a power source (ie, electric vehicles) and vehicles using a combination of both an internal combustion engine and electricity (ie, hybrid vehicles) have been developed and used instead of the internal combustion engine as a power source. [0003] In this regard, electric vehicles (EVs), hybrid electric vehicles (HEVs), fuel cell vehicles, and fuel cell hybrid vehicles must be driven by electric motors having a battery charging voltage. In the past, large-capacity rechargeable batteries have been widely used in el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00G01R19/32
CPCG01R19/0092G01R19/32G01R19/00
Inventor 杨真明李允植李制桓李成民申相哲张汉根
Owner HYUNDAI MOTOR CO LTD