Fail safe serviceable high voltage battery pack
First Claim
1. A fail safe battery pack, comprising:
- a first housing and a second housing affixed together;
a plurality of battery cells residing within said first and said second housings, said plurality of battery cells engaging said first and second housings, said plurality of battery cells are not movable with respect to said first and second housings;
a first printed circuit board and a second printed circuit board;
said first housing includes a first lattice structure of battery cell supports;
said second housing includes a corresponding second lattice structure of battery cell supports;
a variable bias device resides in said first lattice structure of said first housing and engages said first lattice structure;
said first printed circuit board resides in said first lattice structure of said battery supports and engages said first variable bias device;
said second printed circuit board resides in and engages said second lattice structure of said battery supports;
a first plurality of fixed mechanically biased electrical contact devices affixed to said first printed circuit board, said first plurality of fixed bias contact devices interposed between said first printed circuit board and said plurality of battery cells;
a second plurality of fixed mechanically biased electrical contact devices affixed to said second printed circuit board, said second plurality of fixed bias contact devices interposed between said second printed circuit board and said plurality of battery cells;
said variable bias device urging said first plurality of fixed mechanically biased electrical contact devices affixed to said first printed circuit board into engagement with said plurality of battery cells;
a third plurality of fixed mechanically biased devices operating between said first printed circuit board and said plurality of battery cells; and
,said third plurality of fixed mechanically biased devices disengaging said first plurality of said fixed bias contact devices from said plurality of battery cells when said variable bias device has a sufficiently small bias.
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Accused Products
Abstract
A fail safe battery pack is disclosed and claimed wherein first and second housings are affixed together. A plurality of battery cells reside within and fixedly engage the first and the second housings. First and second printed circuit boards (PCBs) reside within first and second lattice structures of the first and second housings. A variable bias device resides in the first and/or second lattice structure of the first and second housing and engages the first and/or second PCBs. When the bias of the variable bias device is sufficiently large it overcomes a plurality of fixed mechanically biased devices operating between the PCB and the plurality of battery cells and tending to separate same and causes the PCB to electrically communicate with the plurality of battery cells. When the bias of the variable bias device is sufficiently small, the plurality of fixed mechanically biased devices separates the PCB and the plurality of battery cells rendering the battery cells in an electrically safe condition.
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Citations
20 Claims
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1. A fail safe battery pack, comprising:
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a first housing and a second housing affixed together; a plurality of battery cells residing within said first and said second housings, said plurality of battery cells engaging said first and second housings, said plurality of battery cells are not movable with respect to said first and second housings; a first printed circuit board and a second printed circuit board; said first housing includes a first lattice structure of battery cell supports; said second housing includes a corresponding second lattice structure of battery cell supports; a variable bias device resides in said first lattice structure of said first housing and engages said first lattice structure; said first printed circuit board resides in said first lattice structure of said battery supports and engages said first variable bias device; said second printed circuit board resides in and engages said second lattice structure of said battery supports; a first plurality of fixed mechanically biased electrical contact devices affixed to said first printed circuit board, said first plurality of fixed bias contact devices interposed between said first printed circuit board and said plurality of battery cells; a second plurality of fixed mechanically biased electrical contact devices affixed to said second printed circuit board, said second plurality of fixed bias contact devices interposed between said second printed circuit board and said plurality of battery cells; said variable bias device urging said first plurality of fixed mechanically biased electrical contact devices affixed to said first printed circuit board into engagement with said plurality of battery cells; a third plurality of fixed mechanically biased devices operating between said first printed circuit board and said plurality of battery cells; and
,said third plurality of fixed mechanically biased devices disengaging said first plurality of said fixed bias contact devices from said plurality of battery cells when said variable bias device has a sufficiently small bias. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A fail safe battery pack, comprising:
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a plurality of battery cells; first and second housings affixed together; said first and second housings include lattice structures for supporting said plurality of battery cells therein; a plurality of battery cells reside within and fixedly engage said first and second housings; first and second printed circuit boards reside within first and second lattice structures of said first and second housings, respectively; said first printed circuit board includes first electrical contacts; a plurality of fixed mechanically biased devices operating between said first printed circuit board and said plurality of battery cells tending to separate said first printed circuit board and said plurality of battery cells; a variable bias device resides in said first lattice structure of said first housing and operates between said first housing and said first printed circuit board tending to engage said first electrical contacts of said printed circuit board with said plurality of battery cells; when said bias of said variable bias device is sufficiently large, said bias overcomes said plurality of fixed mechanically biased devices operating between said first printed circuit board and said plurality of battery cells and causes said first electrical contacts of said printed circuit board to electrically communicate with said plurality of battery cells; and
,when said bias of said variable bias device is sufficiently small, said plurality of fixed mechanically biased devices separates said first electrical contacts of said printed circuit board and said plurality of battery cells rendering said battery cells in an electrically safe condition. - View Dependent Claims (11, 12, 13)
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14. A process for operating a fail safe battery pack, said fail safe battery pack includes a plurality of battery cells fixed within said fail safe battery pack, comprising the steps of:
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arranging said plurality of battery cells into electrical communication with first and second printed circuit boards, each of said battery cells being in electrical communication through said first and second printed circuit boards with an adjacent battery; pressurizing a first air pad, said air pad operating between a first wall of said battery pack and a first printed circuit board, said air pad engaging said first wall of said battery pack and said first printed circuit board, said first printed circuit board includes a plurality of first electrical contacts; compressing a plurality of fixed mechanically biased devices operating between said first printed circuit board and said plurality of battery cells tending to separate said first printed circuit board and said plurality of battery cells; urging said first printed circuit board and said plurality of first electrical contacts into engagement with said plurality of battery cells, said plurality of battery cells includes electrical contacts in engagement with said first electrical contacts of said first printed circuit board; ventilating and depressurizing said first air pad; decompressing said plurality of fixed mechanically biased devices operating between said first printed circuit board and said plurality of battery cells tending to separate said first printed circuit board and said plurality of battery cells; separating said plurality of battery cells from said first printed circuit board rendering said plurality of battery cells in an electrically safe condition. - View Dependent Claims (15, 16, 17)
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18. A battery pack, comprising:
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a first housing and a second housing affixed together; a plurality of battery cells residing within said first and said second housings, said plurality of battery cells engaging said first and second housings, said plurality of battery cells are not movable with respect to said first and second housings; a first printed circuit board and a second printed circuit board; said first housing includes a first lattice structure of battery cell supports; said second housing includes a corresponding second lattice structure of battery cell supports; said first printed circuit board resides in said first lattice structure of said battery supports and engages; said second printed circuit board resides in and engages said second lattice structure of said battery supports; a first plurality of fixed mechanically biased electrical contact devices affixed to said first printed circuit board, said first plurality of fixed bias contact devices interposed between said first printed circuit board and said plurality of battery cells; and
,a second plurality of fixed mechanically biased electrical contact devices affixed to said second printed circuit board, said second plurality of fixed bias contact devices interposed between said second printed circuit board and said plurality of battery cells. - View Dependent Claims (19, 20)
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Specification