Electric quantity indicator for an electromotive vehicle

Details Electric quantity indicator for an electromotive vehicle Electric quantity indicator for an electromotive vehicle

1999-12-15

2009-08-18

Metjahic, Safet (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

C324S427000, C324S132000, C324S134000, C324S434000, C320S132000

Reexamination Certificate

active

07576544

ABSTRACT:
An electric quantity indicator for an electromotive vehicle comprises an electric measuring wire parallel connected to a battery; a feedback circuit connected between a motor of the power supply load and the electric measuring wire; and a meter responsed to the quantity of electricity of the electric measuring wire. The meter is an electronic display panel, and the feedback circuit and the electric measuring wire are installed with analog to digital (A/D) converter for address dividing the value in a memory, in which this value is displayed in the aforesaid meter. Thereby, as a load is actuated and power is consumed, the feedback circuit will detect, and the electric measuring wire will conduct, a real value about the power stored in the battery is displayed on the meter so as to be viewed by a user. Therefore, the condition that due to an error of electric quantity, the user can not know the real the electric quantity and thus the car is stopped owing to exhaustion of electric power is avoided.

REFERENCES:
patent: 5789901 (1998-08-01), Lomholt
patent: 6064182 (2000-05-01), Eguchi
patent: 6094053 (2000-07-01), Harvey

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