Electric vehicle cell
First Claim
Patent Images
1. A battery cell comprising:
- a. a case;
b. an electrode assembly comprising a positive electrode and a negative electrode disposed within said case;
c. a positive current collector within said case in firm engagement with said positive electrode;
d. a negative current collector within said case in firm engagement with said negative electrode;
e. a positive end plate within said case spaced from said positive current collector;
f. a flexible electrical conductor member connecting said positive current collector to said positive end plate; and
,g. a spring positioned between said positive current collector and said positive end plate and urging said positive current collector into said firm engagement with said positive electrode, said positive current collector being held in said firm engagement with said positive electrode solely by the force exerted on said positive current collector by said spring, whereby upon occurrence of a force sufficient to overcome the tension of said spring, said positive current collector will move out of engagement with said positive electrode, and upon cessation of said force sufficient to overcome the tension of said spring, said spring will again force said positive current collector into said firm engagement with said positive electrode.
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Abstract
An electric vehicle cell featuring internal pressure relief and spring disengagement devices which vent various internal pressures to atmosphere to prevent cell bulging or explosion and which also internally interrupt current flow through the cell due to internal overheat, excessive current draw and the like. Internal reconnection of cell members reoccurs subsequent to internal thermal and other abnormalities.
60 Citations
19 Claims
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1. A battery cell comprising:
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a. a case; b. an electrode assembly comprising a positive electrode and a negative electrode disposed within said case; c. a positive current collector within said case in firm engagement with said positive electrode; d. a negative current collector within said case in firm engagement with said negative electrode; e. a positive end plate within said case spaced from said positive current collector; f. a flexible electrical conductor member connecting said positive current collector to said positive end plate; and
,g. a spring positioned between said positive current collector and said positive end plate and urging said positive current collector into said firm engagement with said positive electrode, said positive current collector being held in said firm engagement with said positive electrode solely by the force exerted on said positive current collector by said spring, whereby upon occurrence of a force sufficient to overcome the tension of said spring, said positive current collector will move out of engagement with said positive electrode, and upon cessation of said force sufficient to overcome the tension of said spring, said spring will again force said positive current collector into said firm engagement with said positive electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification