Battery housing for an energy storage device, energy storage device for a motor vehicle, and method for discharging a gas-particle mixture from a battery housing

A battery housing for an energy storage device, wherein the battery housing has a receiving area for accommodating a battery unit, comprising:

• a gas discharge channel integrated into the battery housing, which gas discharge channel has an interior space which is spatially delimited by a channel wall,
• wherein at least one gas inlet opening and at least one gas outlet opening leading out of the battery housing are arranged in the channel wall, and a gas discharge path is provided from the at least one gas inlet opening to the at least one gas outlet opening,
• wherein at least one part of the channel wall is designed as a cooling device for cooling a gas-particle mixture flowing through the gas discharge channel;
• wherein the gas discharge channel has at least one particle separation device for separating particles from the gas-particle mixture flowing through the gas discharge channel;
• wherein the at least one particle separation device comprises at least two baffle plates provided by the channel wall and protruding into the interior space of the gas discharge channel, each baffle plate having at least one passage opening;
• wherein the baffle plates divide the interior space of the gas discharge channel into individual segments along the gas discharge path, wherein each individual segment is paired with another, adjacent individual segment, and wherein each pair of segments arranged adjacent each other along the gas discharge path are fluidly coupled to one another through a passage opening in a corresponding one of the at least two baffle plates;
• wherein a respective passage opening is located in an upper half of a respective baffle plate with respect to a first direction;
• wherein the gas discharge channel has, at least in regions, a longitudinal extension in a second direction which is perpendicular to the first direction, and wherein a third direction is defined perpendicular to the first and second directions, wherein the at least two baffle plates include adjacent baffle plates that are adjacent to one another in the second direction, and wherein passage openings of the adjacent baffle plates are arranged offset in relation to one another in the third direction;
• wherein the gas discharge channel comprises multiple windings and is deflected from extending in the second direction to extending opposite the second direction such that the gas discharge channel extends in a serpentine manner with respect to a main extension direction of the gas discharge channel;
• wherein the baffle plates are at least partly arranged at an angle other than 90 degrees with respect to the second and third directions to impart a swirling flow to the gas-particle mixture along the gas discharge path such that particles are separated from the gas-particle mixture by centrifugal forces;
• wherein the channel wall comprises a lateral dividing wall that separates the receiving area from the interior space of the gas discharge channel;
• and
• wherein a coolant is configured to flow in a meandering manner through regions of the lateral dividing wall and through regions of at least one of the at least two baffle plates.