INTEGRATED COOLING ELEMENT FOR A BATTERY MODULE
A housing for at least one heat-releasing element ( 100 ), for example a battery element in an electric vehicle, comprises: a housing wall ( 200 ), a holder ( 300 ) which is joined to the housing wall ( 200 ) for accommodating the at least one heat-releasing element ( 100 ) and a cooling body ( 400 ) which is arranged on a side of the housing wall ( 200 ) opposite the holder ( 300 ) and is joined to the housing wall ( 200 ). The housing wall ( 200 ), the holder ( 300 ) and the cooling body ( 400 ) are together present as one-piece component, wherein the cooling body ( 400 ) has at least one channel ( 500 ) for a cooling medium and at least a subregion of the cooling body ( 400 ) consists of a first thermoplastic polymer composition having a thermal conductivity determined in accordance with ASTM E1461-01 of ≥0.2 W/(m K).
1 . A housing for at least one heat-releasing element, comprising:
a housing wall,
a holder which is joined to the housing wall for accommodating the at least one heat-releasing element, and
a cooling body which is arranged on a side of the housing wall opposite the holder and is joined to the housing wall, wherein
the housing wall, the holder and the cooling body are together present as one-piece component, wherein the cooling body has at least one channel for a cooling medium and at least a subregion of the cooling body consists of a first thermoplastic polymer composition having a thermal conductivity determined in accordance with ASTM E1461-01 of ≥0.2 W/(m K).
2 . The housing of claim 1 , wherein the first thermoplastic polymer composition comprises a polymer selected from the group consisting of polycarbonate, polyamide, acrylonitrile-butadiene-styrene, polyphenylene sulfide, polypropylene and a mixture of at least two of the abovementioned polymers.
3 . The housing of claim 2 , wherein the first thermoplastic polymer composition comprises a polycarbonate which has a melt volume rate MVR of from 8 to 20 cm 3 /(10 min), determined in accordance with ISO 1133-1:2012-03 (300° C., 1.2 kg).
4 . The housing of claim 1 , wherein the first thermoplastic polymer composition further comprises a filler from the group consisting of aluminum oxide, boron nitride, silicon oxide, kaolin, talc or a mixture of at least two of the abovementioned fillers.
5 . The housing of claim 1 , wherein the first thermoplastic polymer composition has a modulus of elasticity determined in accordance with ISO 527-1/-2 of from ≥2000 to ≤3500 MPa or an Izod impact toughness determined in accordance with ISO 180/A at 23° C. of from ≥5 to ≤60 kJ/m2.
6 . The housing of claim 1 , wherein a) the at least one channel for the cooling medium is a channel which is open to the surroundings and the cooling medium is air or wherein b) the at least one channel is a closed channel and the cooling medium is a liquid.
7 . The housing of claim 1 , wherein the material of the housing contains ≥90% by weight, based on the total weight of the housing, of the first thermoplastic polymer composition.
8 . The housing of claim 1 , wherein the material of the housing further comprises a second thermoplastic polymer composition which is different from the first thermoplastic polymer composition and is present in regions of the housing in which the first thermoplastic polymer composition is absent.
9 . The housing of claim 8 , wherein the second thermoplastic polymer composition comprises polycarbonate, polyimide, acrylonitrile-butadiene-styrene copolymers, polyphenylene sulfide, polypropylene or a mixture of at least two of the abovementioned polymers.
10 . The housing of claim 9 , wherein the second thermoplastic polymer composition further comprises a flame retardant.
11 . The housing of claim 1 , wherein the cooling body has a plurality of channels which are formed by fins.
12 . A process for producing the housing of claim 1 , comprising the step of producing the housing wall, the holder ( 300 ) and the cooling body ( 400 ) as one-piece component in an injection molding process.
13 . A system comprising the housing of claim 1 and a heat-releasing element which is accommodated in the holder of the housing.
14 . The system of claim 13 , wherein the heat-releasing element is an electrochemical store for electric energy or an electrochemical source of electric energy.