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EQUiSat was a 1U (one unit) CubeSat designed and built by Brown Space Engineering (formerly Brown CubeSat Team), an undergraduate student group at Brown University's School of Engineering. EQUiSat's mission was to test a battery technology that had never flown in space which powered an beacon that was designed to be visible from Earth. [1] [2]
Batteries are used on spacecraft as a means of power storage. Primary batteries contain all their usable energy when assembled and can only be discharged. Secondary batteries can be recharged from some other energy source, such as solar panels or radioisotope-based power (), and can deliver power during periods when the space vehicle is out of direct sunlight.
The rechargeable batteries of JWST are the lithium-ion type. [21] The batteries use the Sony 18650 hard carbon cell technology. [21] The batteries are designed to endure spaceflight, and should sustain 18,000 charge-discharge cycles. [21] Each solar panel structure support is honey-comb carbon fiber composite. [citation needed]
Because of their high specific power, NaS batteries have been proposed for space applications. [8] [9] An NaS battery for space use was successfully tested on the Space Shuttle mission STS-87 in 1997, [10] but the batteries have not been used operationally in space. NaS batteries have been proposed for use in the high-temperature environment of ...
A nickel–hydrogen battery (NiH 2 or Ni–H 2) is a rechargeable electrochemical power source based on nickel and hydrogen. [5] It differs from a nickel–metal hydride (NiMH) battery by the use of hydrogen in gaseous form, stored in a pressurized cell at up to 1200 psi (82.7 bar) pressure. [6]
A solid-state battery (SSB) is an electrical battery that uses a solid electrolyte to conduct ions between the electrodes, instead of the liquid or gel polymer electrolytes found in conventional batteries. [1] Solid-state batteries theoretically offer much higher energy density than the typical lithium-ion or lithium polymer batteries. [2]