Following up from the successful TITAN battery packs, EXA now launches the next generation called
TITAN2, featuring a number of improvements and most importantly, a very high scalability up to 8 kWhr
TITAN2 battery packs now integrates a lot of very useful features like:
Very high Energy Density: Of up to 325W/Kg, the highest energy density ever flown and tested in space
Active Automated Heating Control: Driven by an optronic relay, each cell in the pack has its own
independent heating control that automatically regulates the use of power from the cell to not exceed
1.1 amps, shutting on and off automatically while being operated in order to save energy and yet
maintain the temperature on the preset defined by the user.
On board redundant charging system: Each cell in the pack has its own charging circuitry array, capable
of charging at very high power and speed, driven by its own isolated power core, this allows the pack to
be charged at higher voltages, up to 36V, while the packs can be in serial or parallel output
independently. This means that you can feed unregulated voltage to the battery directly and they will
stabilize it for you. The redundancy of the charging circuitry is level 4.
On board temperature sensor: Each cell of the pack has its own temperature sensor, that can use in
conjunction with the AAHC to report and control the temperature in each bank independently with the
most efficient use of energy.
Flexible power output: The cells within the banks can be set to output in parallel or series, while
charging occurs independently for each cell.
Automatic cell balance: The pack keeps track and automatically balances each cell to the average
charge of the group.
OVP/OCP/SCP/PIP: Over voltage, over current, short circuit and polarity inversion protections in each
cell insure safe operation of high energy batteries.
Thermal Cycle Regulation Capability: Each cell of the banks is coated with graphene, raising the thermal
conductivity to 1925 WmK and they have a high thermal inertia, this means that the heat generated
during charging cycle (illumination) is given back to the spacecraft during cooling, removing the heat
from the batteries without freezing them and ceding that heat to the spacecraft; the result is the
attenuation of the thermal cycle to a stable and balmy 10 to 15C inside the spacecraft when properly
isolated externally during the whole orbital period.
Charging Cycle Limit Free: Due to its internal circuitry, the banks are always charging, never completing
a charging cycle, therefore the 700 charge cycle limits do not apply: We have run this batteries for up to
7 years in space in this fashion and still serving.
PowerFlex technology: This is one of the most useful features of the TITAN2 battery arrays; this
technology allows discharging the bank up to 4 times its nominal capacity given a long period of time
without suffering any damage
The PowerFlex technology has greater implications: it means that if you have peak power needs of, lets
say, 1600 W, you can manage it safely with a TITAN2 L2A rated at 840Whr; because due to PowerFlex,
the banks will supply this peak power without you having to acquire a bigger battery bank that will
remain mostly unused but for managing only the transient power spikes. TITAN2 can easily respond to a
twice-its-capacity peak during 30 minutes, even more.
FLIGHT HERITAGE:
TITAN2 battery packs have TRL9 successful flight heritage since 2022 onboard a constellation of small
satellites and in 2023 onboard a launch vehicle, having performed exceptionally well under harsh
conditions, 3 more missions scheduled to fly in 2024 and 2025 will be using TITAN2 battery banks
SCALABILITY:
TITAN2 battery packs starts at 420Whr for the L1A model, up to 8 kW for the L6C2 model
MODEL | POWER (W) |
|---|---|
L1A | 420 |
L2A | 840 |
L2C | 1344 |
L4A | 1666 |
L4B | 2150 |
L4C | 2688 |
L6B | 3225 |
L6C | 4032 |
L6C2 | 8064 |
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