US 6,204,769 B1Granted

Battery control system for electric automobiles

AssigneeYazaki Corporation

InventorsYoichi Arai, Kenichi Shimoyama, Toshifumi Maemoto

Life of this patent

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Abstract

A hydrogen detector detects a concentration of hydrogen gas in an enclosed space communicating with an accommodation space for accommodating a battery, a hydrogen gas expeller is operative for expelling hydrogen gas from the enclosed space, a controller responds to a concentration of hydrogen gas detected by the detector, as the detected concentration exceeds a lower significant concentration, to provide a control signal for driving the expeller, an alarm system is operative for providing an alarm on an abnormal concentration of hydrogen gas, and another controller responds to the concentration of hydrogen gas detected by the detector, as the detected concentration exceeds a higher significant concentration, to provide a control signal for driving the alarm system.

Claims15

Dependent claims

A battery control system for electric automobiles, comprising:

a detector for detecting a concentration of hydrogen gas in an enclosure in flow communication with an accommodation space for accommodating a battery for driving an electric automobile;
an expeller for expelling hydrogen gas from the enclosure;
an alarm provider for providing an alarm;
a battery deterioration determination mechanism for determining a deterioration condition of the battery;
and
at least one controller,
wherein said at least one controller provides a first control signal for driving the expeller when the detector detects a hydrogen gas concentration greater than a first predetermined concentration, provides a second control signal for driving the alarm provider when the detector detects a hydrogen gas concentration greater than a second predetermined concentration which is greater than the first predetermined concentration, and provides a third control signal to drive the expeller when the battery deterioration determination mechanism determines a deterioration condition of the battery.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/199,420Filed 25 Nov 1998
Priority: JP 9-32862628 Nov 1997
Granted: 20 Mar 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

H01M 10/48
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: accumulators combined with arrangements for…
B60L 3/0046
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to electric energy…
B60L 50/64
Using power supplied by batteries: constructional details of batteries specially adapted for electric vehicles
B60L 53/14
Characterised by the energy transfer between the charging station and the vehicle: conductive energy transfer