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Dynamic Motor Drives for Battery-Operated Devices

A battery and measurement equipment technology, applied in the direction of motor generator control, motor control, electromechanical devices, etc., can solve the problems that can no longer be used for continuous rotation of motors, equipment reset, voltage level drop, etc.

Active Publication Date: 2020-08-28
ROSEMOUNT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Batteries for such devices will eventually reach a point where they can no longer deliver the power to continuously turn the motor
When this happens, the voltage level will drop and the device may be at risk of resetting

Method used

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  • Dynamic Motor Drives for Battery-Operated Devices
  • Dynamic Motor Drives for Battery-Operated Devices
  • Dynamic Motor Drives for Battery-Operated Devices

Examples

Experimental program
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Embodiment Construction

[0015] Although the embodiments described herein will be generally described in the context of a WPG, it is clearly recognized that the embodiments are applicable to any energy constrained electric machine application or device. A typical design will ensure that the motor's power dissipation does not exceed the maximum available power that the battery can provide when it is in good or calibrated condition. In this case, the battery will maintain its voltage and provide the required current to the motor load. However, these types of systems can experience various problems when the battery is depleted and / or the ambient temperature drops.

[0016] First, as the battery ages, the internal resistance will increase so that a larger current draw will cause the voltage at the battery to drop. As the voltage drop increases, a point is reached where the system can no longer operate, and in the case of devices employing microprocessors or similar circuits that require a minimum voltage...

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PUM

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Abstract

A battery powered device includes a battery and a motor controller coupled to the battery. A motor is operatively coupled to the motor controller. The motor controller is configured to detect an amount of available power from the battery and engage the motor based on the amount of available power.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 295,669, filed February 16, 2016, the contents of which are hereby incorporated by reference in their entirety. technical field [0003] The present disclosure generally relates to battery operated devices. More specifically, the present disclosure relates to, but is not limited to, systems and methods for dynamically adjusting power consumption for devices having battery-operated motors. Background technique [0004] There are various types of battery-operated devices that include electric motors. These devices may include, for example, process measurement equipment, industrial process tools, printers, appliances, and even power tools. Typically, these devices use standard motor drive circuits. Standard motor drive circuits require a fixed level of power in order to spin the motor. This way, for a given rotational speed, the amount of ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/00
CPCH02P29/00H02J7/0048G01L19/16H02P8/16G01D2213/10H02K37/00
Inventor 埃里克·拉塞尔·洛夫格伦理查德·路易斯·尼尔森
Owner ROSEMOUNT INC