The ornamental design for an explosion-proof fastening element for lithium battery, as shown and described.
FIG. 1 is a perspective view of an explosion-proof fastening element for lithium battery showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is an exploded view thereof; and,
FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 1.
The dot-dash broken lines shown in FIG. 1 represent the designation sight line for the cross-sectional view FIG. 9 and form no part of the claimed design.