Monitoring apparatus and method for battery power supply
A monitoring apparatus and method are disclosed for monitoring and/or indicating energy that a battery power source has then remaining and/or can deliver for utilization purposes as, for example, to an electric vehicle. A battery mathematical model forms the basis for monitoring with a capacity prediction determined from measurement of the discharge current rate and stored battery parameters. The predicted capacity is used to provide a state-of-charge indication. Self-calibration over the life of the battery power supply is enacted through use of a feedback voltage based upon the difference between predicted and measured voltages to correct the battery mathematical model. Through use of a microprocessor with central information storage of temperature, current and voltage, system behavior is monitored, and system flexibility is enhanced.
- Research Organization:
- Purdue Univ., West Lafayette, IN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-79ER10044
- Assignee:
- Purdue Research Foundation (West Lafayette, IN)
- Patent Number(s):
- 4,390,841
- Application Number:
- 06/196398
- OSTI ID:
- 864600
- Resource Relation:
- Patent File Date: 1980 Oct 14
- Country of Publication:
- United States
- Language:
- English
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apparatus
method
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indicating
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utilization
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example
electric
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mathematical
model
forms
basis
capacity
prediction
determined
measurement
discharge
current
rate
stored
parameters
predicted
provide
state-of-charge
indication
self-calibration
life
enacted
feedback
voltage
based
difference
measured
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correct
microprocessor
central
information
storage
temperature
behavior
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flexibility
enhanced
feedback voltage
monitoring apparatus
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discharge current
electric vehicle
power source
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information storage
mathematical model
measured voltage
charge current
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