OVERCHARGE PROTECTION ASSEMBLY FOR A BATTERY MODULE

摘要

The present disclosure includes a lithium-ion battery module that has a housing and a plurality of lithium-ion battery cells disposed in the housing. Each of the plurality of lithium-ion battery cells includes a first terminal with a first polarity, a second terminal with a second polarity opposite to the first polarity, an overcharge protection assembly, and a casing electrically coupled to the first terminal such that the casing has the first polarity, where the casing has an electrically conductive material. The lithium-ion battery module also includes a vent of the overcharge protection assembly electrically coupled to the casing and a conductive component of the overcharge protection assembly electrically coupled to the second terminal, and the vent is configured to contact the conductive component to cause a short circuit and to vent a gas from the casing into the housing when a pressure in the casing reaches a threshold value.

主权项

1. A lithium-ion battery module, comprising:
a housing; and a plurality of lithium-ion battery cells disposed in the housing, wherein each of the plurality of lithium-ion battery cells comprises a first terminal with a first polarity, a second terminal with a second polarity opposite to the first polarity, an overcharge protection assembly, and a casing electrically coupled to the first terminal such that the casing has the first polarity, wherein the casing comprises an electrically conductive material; a vent of the overcharge protection assembly, wherein the vent is electrically coupled to the casing; and a conductive component of the overcharge protection assembly, wherein the conductive component is electrically coupled to the second terminal and the vent is configured to contact the conductive component to cause a short circuit and to vent a gas from the casing into the housing when a pressure in the casing reaches a threshold value.