Battery, vehicle, and battery-operated equipment
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKazuyuki Kusama, Yoshiaki Kameda
Life of this patent
Estimating the term…
Abstract
A lithium secondary battery is equipped with a non-recovering safety valve comprising a valve, which ruptures when the valve opens, and a valve surrounding part that surrounds the valve. The safety valve is further disposed in the valve surrounding part, and has an anti-scattering means that prevents shards, which are produced by the valve rupturing when the valve opens, from scattering outside the battery. The anti-scattering means constitutes an anti-fragmentation part of a form that prevents shards from fragmenting from the valve surrounding part.
Claims12
A battery comprising a non-recovering safety valve including a valve part configured to be ruptured when the valve opens and a valve surrounding part provided around the valve part, the battery comprising
- an anti-fragmentation part provided in the valve surrounding part to constitute a part of the safety valve and configured to prevent a broken portion generated by rupture of the valve part from fragmenting from the valve surrounding part when the valve opens, the broken portion being integrally formed with the valve surrounding part,
- wherein the anti-fragmentation part is configured to allow the broken portion generated when the valve opens to come into contact with the anti-fragmentation part above the valve part to restrict deformation of the broken portion.
Dependencies are inferred from the claim text.