Unlock instant, AI-driven research and patent intelligence for your innovation.

Battery Pack Fuse Monitoring and Current Limiting System

a technology for battery packs and current limits, applied in the direction of dc motor speed/torque control, battery/fuel cell control arrangement, transportation and packaging, etc., can solve the problem and affecting the protection of the battery pack. , to achieve the effect of limiting the torque of the motor

Active Publication Date: 2017-02-02
ATIEVA USA INC
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately while fuses may be used to provide very effective protection in a low current circuit, due to the high current levels common in an EV the response time of a fuse may be too slow to provide the desired level of protection.
Subjecting an EV's electrical system to an overcurrent of such magnitude and for such an extended period of time may damage the battery pack as well as any of a variety of other system components (e.g., motor, motor controller, accessory systems, etc.).
To avoid this problem, the fuse within an EV's power train may be undersized, thus insuring that the fuse will blow quickly.
Unfortunately undersizing the fuse may also lead to it blowing prematurely during routine vehicle use, albeit typically only under extreme conditions (e.g., high temperature conditions).

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Battery Pack Fuse Monitoring and Current Limiting System
  • Battery Pack Fuse Monitoring and Current Limiting System
  • Battery Pack Fuse Monitoring and Current Limiting System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014]As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises”, “comprising”, “includes”, and / or “including”, as used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, process steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” and the symbol “ / ” are meant to include any and all combinations of one or more of the associated listed items. Additionally, while the terms first, second, etc. may be used herein to describe various steps, calculations or components, these steps, calculations or components should not be limited by these terms, rather these terms are only used to distinguish one step, calculation or component from another. For example, a first calculation could be termed a second cal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A battery pack monitoring system is provided that continually monitors the current at the fuse and, when the system determines that the fuse is close to its operating limit, limits battery pack current by limiting traction motor torque.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to an electric vehicle battery pack and, more particularly, to a system that monitors battery pack conditions and sets current limits.BACKGROUND OF THE INVENTION[0002]In response to the demands of consumers who are driven both by ever-escalating fuel prices and the dire consequences of global warming, the automobile industry is starting to embrace the need for ultra-low emission, high efficiency cars. While some within the industry are attempting to achieve these goals by engineering more efficient internal combustion engines, others are incorporating hybrid or all-electric drive trains into their vehicle line-ups.[0003]In recent years, electric vehicles (EVs) have proven to be not only environmentally friendly, but also capable of meeting, if not exceeding, consumer desires and expectations regarding performance, range, reliability, and cost. In order to insure both vehicle reliability and user safety, electric veh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): H02P7/00B60L11/18
CPCH02P7/00B60L11/187B60L11/1861B60L11/1864B60L15/20B60L58/21B60L2240/423B60L2240/545Y02T10/64Y02T10/70Y02T10/72B60L58/24
Inventor GAUTHIER, JEAN-PHILIPPEBISKUP, RICHARD J.
Owner ATIEVA USA INC