# US 12,603,383 B2 · Traction battery pack venting systems with enclosure assembly integrated vent exhaust channels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,383 B2 - Document ID: US12603383B2 - Status: Granted - Kind: B2 - Application number: 16/951,243 - Filed: 2020-11-18 - Published: 2022-05-19 - Granted: 2026-04-14 - Earliest claimed: 2020-11-18 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Suriyaprakash Ayyangar Janarthanam; Kanchana Perumalla; Mohammadreza Eftekhari - Web page: https://patentgrep.com/patent/US12603383B2 ## CPC - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/358: External gas exhaust passages located on the battery cover or case - H01M 50/30: Arrangements for facilitating escape of gases - H01M 50/383: Flame arresting or ignition-preventing means - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract This disclosure details exemplary traction battery pack designs for use in electrified vehicles. An exemplary traction battery pack may include a venting system having one or more vent exhaust channels. The vent exhaust channels may be integrated with an enclosure assembly of the battery pack for purging battery vent byproducts from the battery pack during cell venting events. In some embodiments, the vent exhaust channels are coated with a thermal protective coating for reducing heat dissipation to surrounding components. ## Claims ### Claim 1 A traction battery pack, comprising: an enclosure assembly that provides an outermost surface of the traction battery pack; a battery array housed within the enclosure assembly and including a plurality of battery cells stacked side-by-side; and a vent system configured for routing and expelling battery vent byproducts vented by a battery cell of the plurality of battery cells of the battery array, wherein the vent system includes a vent exhaust channel fixedly secured directly to a portion of the enclosure assembly. ### Claim 2 (depends on 1) The traction battery pack as recited in claim 1, wherein the vent exhaust channel is fixedly secured directly to an interior surface of a cover of the enclosure assembly. ### Claim 3 (depends on 1) The traction battery pack as recited in claim 1, wherein the vent exhaust channel is fixedly secured to directly an interior surface of a tray of the enclosure assembly. ### Claim 4 (depends on 1) The traction battery pack as recited in claim 1, wherein the vent exhaust channel is arranged over a vent port of the battery cell. ### Claim 5 (depends on 1) The traction battery pack as recited in claim 1, wherein the vent exhaust channel is fluidly connected to a vent device configured to expel the battery vent byproducts from the traction battery pack, and comprising a vent tube that fluidly connects the vent exhaust channel to the vent device. ### Claim 6 (depends on 5) The traction battery pack as recited in claim 5, wherein the vent device is a one-way valve located at least partially outside of the enclosure assembly, and the vent tube extends through either a cover or a tray of the enclosure assembly. ### Claim 7 (depends on 1) The traction battery pack as recited in claim 1, wherein an interior surface of the vent exhaust channel is coated with a thermal protective coating. ### Claim 8 (depends on 7) The traction battery pack as recited in claim 7, wherein the thermal protective coating includes an intumescent fireproof coating or a ceramic base coating. ### Claim 9 (depends on 7) The traction battery pack as recited in claim 7, wherein the thermal protective coating includes a curable, water-based coating. ### Claim 10 (depends on 1) The traction battery pack as recited in claim 1, wherein a first portion of the vent exhaust channel is fixedly secured directly to an interior surface of a cover or a tray of the enclosure assembly, and a second portion of the vent exhaust channel is received in abutting contact with a seal that is disposed between the vent exhaust channel and a housing of the battery cell. ### Claim 11 A traction battery pack, comprising: an enclosure assembly that provides an outermost surface of the traction battery pack; a battery array housed within the enclosure assembly and including a plurality of battery cells stacked side-by-side; and a vent system configured for routing and expelling battery vent byproducts vented by a battery cell of the plurality of battery cells of the battery array, wherein the vent system comprises a vent exhaust channel that includes a thermal protective coating, wherein the vent exhaust channel is fixedly secured directly to a portion of the enclosure assembly. ### Claim 12 (depends on 11) The traction battery pack as recited in claim 11, wherein the thermal protective coating includes an intumescent fireproof coating. ### Claim 13 (depends on 11) The traction battery pack as recited in claim 11, wherein the thermal protective coating includes a ceramic based coating. ### Claim 14 (depends on 11) The traction battery pack as recited in claim 11, wherein the thermal protective coating includes a curable, water-based coating. ### Claim 15 (depends on 11) The traction battery pack as recited in claim 11, wherein the thermal protective coating is applied to an interior surface of the vent exhaust channel. ### Claim 16 (depends on 11) The traction battery pack as recited in claim 11, wherein the vent exhaust channel is arranged over a vent port of the battery cell, and further comprising a seal disposed within a gap between the battery array and the vent exhaust channel. ### Claim 17 (depends on 11) The traction battery pack as recited in claim 11, wherein the vent exhaust channel is fixedly secured directly to an interior surface of a cover or a tray of the enclosure assembly. ### Claim 18 (depends on 17) The traction battery pack as recited in claim 17, wherein the vent exhaust channel is fixedly secured to the interior surface by a weld or an adhesive. ### Claim 19 (depends on 11) The traction battery pack as recited in claim 11, wherein the vent exhaust channel is fluidly connected to a vent device configured to expel the battery byent byproducts from the traction battery pack, and further wherein at least a portion of the vent device is located outside of the enclosure assembly. ### Claim 20 (depends on 11) The traction battery pack as recited in claim 11, wherein at least a portion of an interior surface of a cover or a tray of the enclosure assembly includes the thermal protective coating.