Difference between revisions of "Battery"
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*electronic fuse : SC sends commands periodically that specify the maximum amount of current and/or power allowed. | *electronic fuse : SC sends commands periodically that specify the maximum amount of current and/or power allowed. | ||
| − | *internal charger and | + | *internal charger and balancer [http://18.85.17.197/for_wiki/very-prelim-battery-balance-072909.pdf PDF] |
**inductive charging. | **inductive charging. | ||
*believe a MSP430 micro should be employed. lowest possible power | *believe a MSP430 micro should be employed. lowest possible power | ||
**has ADCs, however, *might* not be accurate enough to monitor cell voltages (15V/4096 = 4mV) - may require external 16 bit ADC, or opamp conditioning | **has ADCs, however, *might* not be accurate enough to monitor cell voltages (15V/4096 = 4mV) - may require external 16 bit ADC, or opamp conditioning | ||
Revision as of 17:34, 29 July 2009
- SC sends commands periodically specifying the (minimum) boost converter output voltage.
- boost converter is not normally active or switching
- SC command for emergency shut off, not re-enabled until re-insertion.
- battery terminals are not normally live. thus impossible to externally short.
- external power enabled when battery inserted into robot.
- micro power hall sensor senses a magnet and enables BAF
- high impedance source that is 'shorted' when connected to robot and enables BAF
- BAF 'soft starts' robot - avoiding inrush current
- low voltage (and fuel gauge) shutoff - voltage of each cell is indepentically monitored.
- impedance tracking of each cell?
- fuel gauge : micropower current sensor that integrates charge/discharge of battery.
- electronic fuse : SC sends commands periodically that specify the maximum amount of current and/or power allowed.
- internal charger and balancer PDF
- inductive charging.
- believe a MSP430 micro should be employed. lowest possible power
- has ADCs, however, *might* not be accurate enough to monitor cell voltages (15V/4096 = 4mV) - may require external 16 bit ADC, or opamp conditioning
