State detecting system and device employing the same

• US 20060247871A1
• Filed: 06/22/2006
• Published: 11/02/2006
• Est. Priority Date: 04/10/2002
• Status: Active Grant

• Current Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Yoshihara, Shigeyuki, Emori, Akihiko, Mitsui, Toshisada, Hombu, Mitsuyuki, Sasazawa, Kazuyoshi, Kudou, Akihiko, Miyazaki, Hideki
• Granted Patent: US 7,406,389 B2
• Time in Patent Office: Days
• US Class Current: 702/57
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 58/15 Preventing overcharging
• CPC Class Codes: B60L 8/003 Converting light into electric energy, e.g. by using photo-voltaic systems
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/374 with means for correcting the measurement for temperature or ageing
• CPC Class Codes: G01R 31/3842 combining voltage and current measurements
• CPC Class Codes: G01R 31/389 Measuring internal impedance, internal conductance or related variables
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

A state detecting system which can detect state of power storage at high precision even with lesser characteristic data to be used for calculation, and a device employing the same. The state detecting system has a memory for storing a characteristic data, calculation information, and set information, an arithmetic unit for calculating state information indicative of state of said power storage and calculating correction information for performing correction, a first correcting unit for correcting input of said arithmetic means, and a second correcting unit for correcting information stored or set in the storage.

Claims

1. A state detecting system comprising:

a storage means for storing a characteristic data on a power storage means arithmetically obtained on the basis of measured information obtain by measuring a measuring object with respect to said power storage means by a measuring means, with respect to said power storage means by a measuring means, calculation information relating to said arithmetic operation of said data, and set information preliminarily set relating to said characteristic data and said calculation information;

an arithmetic means for calculating state information indicative of state of said power storage means on the basis of said measured information and set information and calculating correction information for performing correction by comparing a calculation result calculated and said set information; and

a first correcting means for correcting input of said arithmetic means on the basis of correction information obtained by said arithmetic means, or a second correcting means for correcting information stored or set in storage means based on correction information obtained by said arithmetic means.