NANOeps (2nd Generation)
A versatile electrical power system with scalable battery capacity for nano and micro satellites
NANOeps-63w with 63Wh battery pack
NANOeps-95w with 95Wh battery pack
NANOeps-126w with 126Wh battery pack
NANOeps-158w with 158Wh battery pack
The NANOeps with scalable battery pack presents a complete EPS targeted for use on nano and microsatellites. NANOeps integrates all features of Power Control and Distribution Unit and Battery Management Module with integrated battery pack, which makes it one of the most advance EPS systems on the market. The battery pack features an active balancing to provide outstanding life-time and heating systems for the maximal battery cells protection. The NANOeps is fully complaint with up to two NANOamppt units, which support the safest and most accurate solar array energy conversion method using the novel Analog MPPT feature. The NANOeps represents the second generation of SkyLabs’s flight proven equipment for the emerging space market. Its fault tolerance by design provides remarkable reliability and robustness against SEE. Fault tolerance is assured by the SkyLabs’ radiation harness assurance, that is based on a delicate component selection process and their radiation characteristics and flight heritage, latch-up protection by constant current monitoring and several other mitigation techniques. Several intelligent built-in functions enable NANOeps fully autonomous operation, making the power distribution and battery management practically autonomous. NANOeps represents a key subsystem in the NANOsky 2nd generation platform due to its performance enchantments, its multifunctional architecture and various features available.
Features
The NANOeps with build-in PCDU is providing 23 independent power output channels. Three channels are in full redundant configuration for essential on-board equipment. It features 5 dedicated deployment actuator interfaces with 10 TLM deployment interfaces.
It is comprised of two independent modules, one dedicated to battery management and one dedicated to power distribution, both acting as nodes on a redundant CAN bus.
- Battery pack with capacity between 63 Wh up to 158 Wh (up to 18Ah)
- Two charging interfaces, supporting a total charging current of 18A
- Independent heaters and thermal sensor per battery cell
- Independent battery balancer per cell string (up to 5)
- Independent battery protection fuse per cell string (up to 5)
- Separation Switch and Remove Before Flight interfaces
- Radiation hardened by design to increase reliability and robustness
- Constant current monitoring and limiting
- Selective components technology selection with flight heritage
- EDAC/ECC protected memories
- Advance three-level FDIR protection
- Watch-dog timer
- SEE immune non-volatile MRAM memories for TM storage
- Instant boot up at power on
- Comprehensive local subsystem telemetry (currents, voltages, temperatures, etc.)
- Interfaces:
- Redundant CAN interface for TM/TC
- Output channels status debug connector for integration into EGSE
- 23 power output channels (supporting 3.3V, 5V, 12V and 10V unregulated outputs)
- Dedicated monitoring of current and voltage
- Over-current and over/undervoltage protection
- 5 deployment actuators (up to 2A per channel) and up to 10 deployment TLM interfaces
- Dedicated monitoring of current and voltage
- Over-current and over/undervoltage protection
- Debug connector for monitoring output channels and battery voltage during integration
Software support
NANOeps has a flight proven functionality. It is delivered with skyEGSE-GUI application to enable user immediate out of the box control, monitor and management of the equipment.
NANOeps is compliant with optional NANOsky CMM™ SDK that provides all functions to support controlling, monitoring and management of NANOeps equipment. All functions are provided in a comprehensive C++ library, with application-level examples for fast prototyping or functionality integration to a third-party software. This enables users a drastic savings in the development time for integration of SkyLabs equipment functions into customer specific EGSE, AIV/T or even MOC software.
Technical specifications
| Battery pack capacity | up to 158 Wh |
| Battery pack life time | > 30000 re-charge cycles @ 20% DoD (80% EOL capacity) |
| Charge rate | Continuous charge up to 18A (for NANOeps-158w) |
| Discharge rate | Continuous discharge up to 18 A, peak discharge up to 54 A (for NANOeps-158w) |
| Output channels | 3x 5V output (redundant)
2x 5V output 5x 12V output 2x 3.3V output 11x unregulated output |
| Maximal output channel current | Preconfigured to: 1 A, 1.25 A, 1.5 A, 2.4 A, 3 A, 3.5 A, or 6 A |
| Deployment Interfaces | 5x deployment interface outputs:
· Unregulated output voltage · Up to 2 A deployment current 10x deployment interface inputs: · Input voltage range up to 12 V. |
| Debug Connector | All output channels including deployment outputs and battery voltage routed to special debug connector for EGSE monitoring |
| Separation/RBF Switches | Two separation switches:
· Disconnect battery from bus. · Disconnect output channels from bus. RBF pin input and output: · Disconnect battery from bus. · Disconnect output channels from bus |
| Battery balancer | Active battery balancing per cell string. |
| Battery heaters | Individual thermal monitoring and heating per cell, heat power per cell up to 7.5 W |
| Battery fuse | One non-resettable fuse per battery string:
· Fuse current of 25 A. · I2t of 45 A2s. |
| On-board Communication interfaces | Redundant CAN bus for TM/TC |
| Supply voltage | Internal supplied from battery pack |
| Dimensions: | 95 x 91 x 193 mm (for NANOeps-158w) |
| Operation temperature | -10 °C to +45 °C |
| Storage temperature | -10 °C to +50 °C |
| Mass: | 2030 g (for NANOeps-158w) |
| Radiation tolerance | > 30 krad (Si) SEE Tolerant |
| Quality Assurance: | ISO 19683:2017, ECSS-E-ST-10-02C/03C, IPC Class3+ |
