Calibration device of electric current transducer

A current sensor and calibration device technology, applied in the field of sensor calibration, can solve the problems of low current sampling accuracy, impact on safety performance, gaps, etc., and achieve the effect of improving current acquisition accuracy

Active Publication Date: 2018-10-23
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new design helps ensure accurate measurement for batteries used on vehicles (Bs). It uses an apparatus called Temperature Box, where there are two temperatures - one very cold or hot but also kept within certain specific ranges. When measuring the resistance of each cell inside it's own set-up, its control unit checks if they have been properly installed beforehand based upon their previous measurements from the BMS. By comparing these results against expected data obtained during testing, the manufacturer ensures consistently high performance levels over time without any issues caused due to improving signal quality.

Problems solved by technology

The technical problem addressed in this patented technology relates to improving the precision or reliability of current sensors used during monitoring of batteries' operating conditions while ensuring they are accurate enough to protect their owners from harm caused by any issues such as overvoltage or undercurrent situations.

Method used

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  • Calibration device of electric current transducer
  • Calibration device of electric current transducer
  • Calibration device of electric current transducer

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Embodiment Construction

[0039] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0040] It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the

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Abstract

The invention provides a calibration device of an electric current transducer, and relates to the field of sensor calibration. A temperature box of the embodiment of the invention provides a preset temperature environment, the transducer sensitivity coefficient under the temperature environment is calibrated by a controller under the temperature environment according to a practical current value in a closed loop circuit and a first current value acquired by a battery management system, accordingly different temperature environments can be provided through the temperature box, the transducer sensitivity coefficient under different temperature environments and different voltage values can be obtained, and accordingly the current acquisition precision of the battery management system can be improved through the transducer sensitivity coefficient.

Description

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Claims

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Application Information

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Owner BEIJING ELECTRIC VEHICLE
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