The development and demonstration of a hybrid battery/supercapacitor energy storage system (ESS) onboard the Earth-orbiting CubeSat JPL/CSUNSat1 is described. The ESS is capable of supporting high power pulse currents (>10C-rate) at low temperature (<–40 °C). The primary operational phase of the technology demonstration mission includes the performance characterization of the ESS at various discharge rates (1–15 A) at moderate to low temperatures. The internal resistances obtained from JPL/CSUNSat1 telemetry under battery-only, supercapacitor-only, and hybrid operating modes of the ESS were consistent with ground test data. Despite the loss of telemetry downlinks due to the failure of a memory storage card in the later stages of the mission, ten charge/discharge cycles were performed successfully to validate an impedance-based performance model developed at the Jet Propulsion Laboratory. This flight demonstrates the first use of supercapacitors within a hybrid energy storage subsystem in a space environment.

中文翻译：

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地球轨道立方体卫星中混合电池/超级电容器储能系统的飞行演示


描述了地球轨道立方体卫星 JPL/CSUNSat1 上混合电池/超级电容器储能系统 (ESS) 的开发和演示。 ESS 能够在低温 (<–40 °C) 下支持高功率脉冲电流 (>10C 速率)。技术演示任务的主要操作阶段包括在中低温下各种放电率（1-15 A）下对 ESS 进行性能表征。 JPL/CSUNSat1遥测得到的ESS在纯电池、纯超级电容器和混合工作模式下的内阻与地面测试数据一致。尽管在任务后期由于存储卡故障导致遥测下行链路丢失，但仍成功执行了十个充电/放电周期，以验证喷气推进实验室开发的基于阻抗的性能模型。这次飞行展示了超级电容器在太空环境中混合储能子系统中的首次使用。