Thermal battery
US6818344B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Mar 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2300/0051
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermal battery is housed in a chamber that utilizes micro-electromechanical systems (MEMS)-based technology to offer superior chemical stability and advantageous mechanical and thermal properties. The thermal battery of the present invention is activated by heat, for example heat generated by a pyrotechnic charge, for example thermite, for immediate and thorough activation of the electrolyte. The anode, cathode and electrolyte of the battery are formed of pellets having a curved interface for increased current density. The electrolyte preferably comprises a three-component eutectic salt mixture. In this manner, the thermal battery of the present invention is well suited for applications that require highly integrated thermal batteries that are relatively small in physical size, yet are capable of reliable performance over a wide range of operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.