Extended life battery pack with active cooling
US6479185B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a module for retaining and cooling a group of primary or secondary electrochemical cells for use in powered devices. To provide more effective cooling and reduce thermal gradients, cells are aligned in a side-by-side configuration within a multi-pass cooling passage. The multi-pass cooling in each module results in potentially longer useful life for the entire array. Large array batteries are formed of multiple modules, the shape and configuration of the modules allowing a variety of compact combinations having high energy density. In one configuration of an array battery according to the invention, two decks of modules are stacked vertically within a rigid enclosure. Air as a cooling medium is induced through each module to reduce cell temperatures. Temperature monitoring of each cell in a module and array allow for maintenance and identification of thermal events effecting continued long term operation. Temperature monitoring is carried out preferably using PTC (Positive Temperature Coefficient) devices which are held against the cell sides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.