Abstract: A traction battery pack may include an outer enclosure assembly. A traction battery pack may include a pressure equalization device received within a wall of the outer enclosure assembly. The pressure equalization device may include a housing and a valve configured to close a gas path through the housing during a battery thermal event of the traction battery pack. The valve may include a spring configured to urge the valve to close during the battery thermal event. The spring is held in place by a spring holder. The spring holder includes a first set of openings spaced-apart from the spring by a first distance, and a second set of openings spaced-apart from the spring by a second distance less than the first distance.

Abstract: A traction battery pack includes an enclosure assembly; and a pressure equalization device received within a wall of the enclosure assembly. The pressure equalization device includes a housing assembly and a flow restrictor configured to restrict flow through the housing assembly during a battery thermal event of the traction battery pack.

Abstract: A seal assembly includes a cap and a seal. The cap includes an engagement structure and a flange. The engagement structure is configured to couple the cap to an enclosure. The flange defines a plurality of openings that are open through a first side of the flange and a second side of the flange. The seal includes a seal body and a plurality of bosses. The seal body engages the second side of the flange and includes a plurality of bosses. Each boss is positioned in a respective opening of the plurality of openings. The seal is compressible against the flange from a relaxed state in which the bosses are flush with the first side of the flange or recessed within the openings and a compressed state in which each boss extends from the respective opening beyond the first side of the flange.

Abstract: Retention systems are provided for positioning and retaining bus bars relative to battery array terminals within a traction battery pack. The retention systems may include features for urging a bus bar into contact with an array terminal of a battery system. The retention systems may additionally incorporate features for preventing exposure to high voltage areas of the battery system and for directing vent gases toward pack-level venting systems. In some implementations, the bus bar retention features are provided by a combination of a thermal barrier structure and a terminal clip of the retention system.

Abstract: An electrified vehicle assembly includes an enclosure assembly of a battery pack. The enclosure assembly has a coating. An attachment point is disposed within the enclosure assembly. The enclosure assembly is secured directly to the attachment point. The assembly includes a coating clearing feature that removes some of the coating from the enclosure assembly when the enclosure assembly is secured directly to the attachment point.

Abstract: A grounding assembly for a battery enclosure includes a washer including a first serrated surface and a second serrated surface opposite the first serrated surface, a fastener including a serrated surface configured to mate with the second serrated surface of the washer, and a seal disposed on the washer. The first serrated surface is configured to remove a non-conductive coating from the battery enclosure. The seal is configured to form a watertight barrier between the washer and the battery enclosure.

Abstract: Traction battery pack designs are disclosed for use in electrified vehicles. Exemplary traction battery packs may include an outer enclosure assembly establishing an interior, and a battery array housed within the interior. A peripheral component assembly may be secured within a wall of the outer enclosure assembly. The wall may be part of a tray or a cover of the outer enclosure assembly. The peripheral component assembly may include twist lock features for rotatably securing the peripheral component assembly in place within a mounting opening of the wall. Using the twist lock features, the peripheral component assembly may be installed from inside the outer enclosure assembly.

Abstract: An electrical ground assembly for a vehicle component includes a bushing including an upper serrated surface and a lower serrated surface opposite the upper serrated surface, a ground strap including a terminal, and a fastener including a head portion, a shaft extending from the head portion, and a flange extending radially between the head portion and the shaft portion. The terminal is electrically connected to the bushing between the upper serrated surface and the lower serrated surface. The flange includes a lower serrated surface configured to mate with the upper serrated surface of the bushing.

Abstract: A battery component includes a header body and a frame secured to the header body. The frame includes an electromagnetic shield portion. The electromagnetic shield portion defines at least one electrical connection port. The electrical connection port is configured to receive an electrically conductive object. The electromagnetic shield portion is configured to dissipate electromagnetic radiation from the electrically conductive object.

Abstract: Traction battery pack designs are disclosed for use in electrified vehicles. Exemplary traction battery packs may include an outer enclosure assembly establishing an interior, and a battery array housed within the interior. A pressure equalization device may be disposed within a wall of the outer enclosure assembly and may be configured to both equalize the pressure inside the battery pack during normal battery operations and to prevent the unintended release of battery vent byproducts during battery thermal events.