Determining apparatus of battery deterioratiion for electric vehicle and method thereof
A technology for determining devices and batteries, which is applied to electrical devices, electric vehicle charging technology, battery/fuel cell control devices, etc., and can solve problems such as battery performance degradation, output degradation, and battery degradation
Inactive Publication Date: 2015-06-10
HYUNDAI MOTOR CO LTD
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Problems solved by technology
Specifically, batteries used in electric vehicles deteriorate due to continuous use, and thus battery performance deteriorates
When battery performance deteriorates, travel distance decreases and output during acceleration of the vehicle at the same state of charge (SOC) deteriorates
Method used
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[0043] According to an exemplary embodiment of the present invention, when rapidly charging a battery provided in an electric vehicle, deterioration of the battery is quantifiably determined using a time for maintaining a constant voltage mode. Additionally, diagnostic strategies can be established based on battery degradation.
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A battery degradation determining apparatus and method for a vehicle is provided. The method includes charging a battery in a constant current mode to a predetermined voltage and charging the battery in a constant voltage mode when a voltage of the battery reaches the predetermined voltage. A time is measured for maintaining the constant voltage mode from the charger and a degradation degree of the battery is calculated using the measured time for maintaining the constant voltage mode. Accordingly, degradation of a battery is determined quantitatively using a time for maintaining a constant voltage mode in quick charging of the battery disposed within a vehicle.
Description
[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2013-0150698 filed on December 5, 2013 in the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a battery deterioration determining device and method thereof for an electric vehicle. More particularly, the present invention relates to a battery deterioration determining device for an electric vehicle and a method thereof for determining battery deterioration using a time for maintaining a constant voltage mode of a battery provided in the electric vehicle. Background technique [0004] Electric vehicles use battery-powered electric motors that are operated by electrical energy output by batteries. Since an electric vehicle mainly uses a battery formed of one battery pack including a plurality of rechargeable / redischargeable se...
Claims
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IPC IPC(8): G01R31/36
CPCB60L3/12B60L2240/545B60L2240/547B60L2250/10H01M10/42H01M2220/20Y02T10/7072Y02T90/14G01R31/371B60L53/11B60L58/16G01R31/392Y02T10/70Y02E60/10G01R31/36H01M10/48G01R31/3648G01R31/388Y02T90/12
Inventor 南智媛
Owner HYUNDAI MOTOR CO LTD