The battery boards for the FRoDO-rockets
@todo
The newest version of the battery developed for the FRoDO-M-rocket
The battery module contains two lithium-ion cells in series, mounted on an SRAD PCB using a Keystone connector, allowing the replacement of battery cells.
The battery features a linear charging IC supporting up to 700 mA of charge current and performs balancing of the cells, powered by the charge bus through a reverse current protection diode and a PTC fuse.
- 2x 3000 mA h Sony VTC6 18650 lithium-ion cells in series
- for other components see https://github.com/tudsat-rocket/frodo_power_module/blob/main/frodo_power_module.csv
| Connector | Purpose |
|---|---|
| FC | connect the flight computer. Outputs 8v with max ?a |
| SW | Switch to turn the battery board on and off |
| FC-CAN (2x) | CAN-bus for communication |
| BUS-A | |
| BUS-B |
Spanning liegt von außen an, geht durch Arming Circuit,
tdb...
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3x 18650 lithium-ion cells in series
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New Charging IC due to more Cells
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Larger Board due to more Cells.
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Are 18650 a requirement or might they be exchanged against softbody batteries known from drones? (smaller PCB possible)
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Arming Schalter schaltet alles an.
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6 Pin durch 8 Pin ersetzen
Good: bq76PL536A: https://www.ti.com/lit/ds/symlink/bq76pl536a.pdf?ts=1740396899518&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ76PL536A - Does not require host, is availabel on lcsc: https://www.lcsc.com/search?q=BQ76PL536A&s_z=n_BQ76PL536A BQ76922: https://www.ti.com/lit/ds/symlink/bq76922.pdf?ts=1740361016781
Okay: BQ79606A-Q1: https://www.ti.com/lit/ds/symlink/bq79606a-q1.pdf?ts=1740391966301&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ79606A-Q1 - Availability is bad
Meh: BQ76925: https://www.ti.com/lit/ds/symlink/bq76925.pdf?ts=1740385881236 - due to required host. This is just an analogue expander.