Difference between revisions of "Battery"
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| + | {{ceb_prj}} | ||
| + | {{pf_top_nav}} | ||
| + | [[Bat_boost]] | ||
| + | |||
| + | ==notes== | ||
| + | *High side current monitor ICs: INA168-9, INA138-9, INA270-1, INA210,211,212,4,9 INA 193,196,197 | ||
| + | *INA139 CMRR -~60db @ 1Mhz w/G=100 | ||
| + | *INA209 - I2C high side current and voltage measurement. | ||
| + | |||
| + | *INA210-214 H&L side, offer high gain, but not enough common mode rejection @ 1MHz (-40db), and also only 10khz BW (or less), allows DC offset and thus is bi-directional | ||
| + | |||
| + | *INA200-202 - gain to 100khz, but not enough CMRR and PSRR | ||
| + | *INA203-205 - current shunt montor w/2 comps - 500khz - TSSOP14 | ||
| + | *INA193-198 - voltage output, 100khz, 50db CMRR @ 1mhz | ||
| + | *AD8211 - H&Low side, high BW, good CMRR, gain=20 | ||
| + | *AD8212 - adjust gain, but BW decreases w/gain | ||
| + | *AD8213 - dual monitor, G=20, MSOP10, high and low side | ||
| + | |||
| + | |||
| + | = = | ||
*SC sends commands periodically specifying the (minimum) boost converter output voltage. | *SC sends commands periodically specifying the (minimum) boost converter output voltage. | ||
**boost converter is not normally active or switching | **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. | *battery terminals are not normally live. thus impossible to externally short. | ||
| − | *external power enabled when battery inserted into | + | *external power enabled when battery inserted into robot. |
| − | **micro power hall sensor senses magnet and enables BAF | + | **micro power hall sensor senses a magnet and enables BAF |
| − | **high impedance source that is 'shorted' when connected to | + | **high impedance source that is 'shorted' when connected to robot and enables BAF |
| − | **BAF 'soft starts' | + | **BAF 'soft starts' robot - avoiding inrush current |
| − | *low voltage (fuel gauge) shutoff - each cell | + | *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. | *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 | ||
| + | **has ADCs, however, *might* not be accurate enough to monitor cell voltages (15V/4096 = 4mV) - may require external 16 bit ADC, or opamp conditioning | ||
Latest revision as of 15:00, 17 November 2009
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notes
- High side current monitor ICs: INA168-9, INA138-9, INA270-1, INA210,211,212,4,9 INA 193,196,197
- INA139 CMRR -~60db @ 1Mhz w/G=100
- INA209 - I2C high side current and voltage measurement.
- INA210-214 H&L side, offer high gain, but not enough common mode rejection @ 1MHz (-40db), and also only 10khz BW (or less), allows DC offset and thus is bi-directional
- INA200-202 - gain to 100khz, but not enough CMRR and PSRR
- INA203-205 - current shunt montor w/2 comps - 500khz - TSSOP14
- INA193-198 - voltage output, 100khz, 50db CMRR @ 1mhz
- AD8211 - H&Low side, high BW, good CMRR, gain=20
- AD8212 - adjust gain, but BW decreases w/gain
- AD8213 - dual monitor, G=20, MSOP10, high and low side
- 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
