The invention relates to a compartment (2) for an apparatus (9) capable of discharging heat during operation, in particular for an electrical energy storage device for a motor vehicle, said compartment comprising at least one circulation channel (3) for a coolant, the channel being formed between a thermal interface wall and a bottom wall of the compartment, said interface wall (20) and said bottom wall (21) being mechanically joined together by a mechanical connecting element (22) which is at least partially made of plastic and is in contact with the two walls.
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