Method and System for Calibrating Current Sensor of Electric Vehicle Battery Electronics

A current sensor and current technology, applied in the direction of inductance measurement, current/voltage measurement, instrumentation, etc., can solve problems such as difficulty in obtaining accuracy

Inactive Publication Date: 2015-06-10
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Amp hour integration accuracy is the primary metric for battery recharging and relatively good accuracy is difficult to obtain

Method used

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  • Method and System for Calibrating Current Sensor of Electric Vehicle Battery Electronics
  • Method and System for Calibrating Current Sensor of Electric Vehicle Battery Electronics
  • Method and System for Calibrating Current Sensor of Electric Vehicle Battery Electronics

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Embodiment Construction

[0025] Specific embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely illustrations that the invention may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously practice the present invention.

[0026] now refer to figure 1 , shows a block diagram of a plug-in hybrid electric vehicle (PHEV) 10 . The PHEV 10 includes a high voltage direct current (DC) traction battery 12 , an electric motor 14 , an engine 16 , a transmission 18 and wheels 20 . The electric motor 14 , engine 16 and wheels 20 are mechanically connected to the transmission 18 such that the electric motor 14 and / or the engi...

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Abstract

An electric vehicle battery arrangement includes a current sensor. The current sensor has a core and a magnetic field detector. An N-turn coil is wrapped around the core. A controller is configured to adjust an output of the detector indicative of current according to a comparison between a magnetic field caused by a given current in the coil as detected by the detector and a magnetic field expected to be caused by the given current in the coil.

Description

technical field [0001] The present invention relates to improving the accuracy of a current sensor configured to sense current flowing between an electric vehicle battery and a load or power source. Background technique [0002] A battery electric vehicle (BEV) can be moved by operation of an electric motor. Plug-in hybrid electric vehicles (PHEV) and hybrid electric vehicles (HEV) can be moved by operation of an electric motor and / or an internal combustion engine. In either case, the electric motor may receive power from the on-board battery. Here, the motor is the load of the battery when current flows from the battery (for example) through the inverter to the motor. For BEVs and PHEVs, the battery can be charged by a charger using electricity from the public grid. Here, the charger is the power source for the battery when current flows from the charger to the battery. [0003] The battery electronics may include a current sensor configured to measure current. Amp hou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R35/00
CPCG01R33/072G01R35/005G01R15/183G01R15/202G01R31/382G01R31/3828G01R27/2611G01R33/07
Inventor 本杰明·A·塔巴托斯基-布什
Owner FORD GLOBAL TECH LLC
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