Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1993-11-26
1995-12-26
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 43, 429 92, 324425, G01R 3130, H01M 1048
Patent
active
054790859
ABSTRACT:
A method and an apparatus are provided for detecting a current residual capacity of a battery employed in an electric vehicle, such as an electric car. During a charging process, a value of the charge current of the battery is measured and an estimated discharge voltage corresponding to a current battery accumulated power is determined. A power of the battery as a product of the value of the charge current of the battery and the estimated discharge voltage is thereafter computed and the computed power is added to the current battery accumulated power to provide a new current battery accumulated power for display. During a discharging process, values of the discharge voltage and the discharge current are measured. The amount of consumed power is thereafter computed as a product of the values of the discharge voltage and the discharge current. The computed amount of consumed power is subtracted from a current battery residual capacity to produce a new current battery residual capacity for display. The above estimated discharge voltage is found from data obtained from test-working experiments or a process of learning the running states of an actual electric vehicle.
REFERENCES:
patent: 4258306 (1981-03-01), Bourke et al.
patent: 4390841 (1983-06-01), Martin et al.
patent: 4560937 (1985-12-01), Finger
patent: 5047961 (1991-09-01), Simonsen
patent: 5218288 (1993-06-01), Mackal et al.
patent: 5325041 (1994-06-01), Briggs
patent: 5394089 (1995-02-01), Clegg
Honda Satoshi
Nazazawa Yoshihiro
Honda Giken Kogyo Kabushiki Kaisha
Nappi Robert
Wong Peter S.
LandOfFree
Method and apparatus for measuring residual capacity of an elect does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring residual capacity of an elect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring residual capacity of an elect will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1371139