Cell case for secondary battery
A battery shell and storage battery technology, which is applied to large-size batteries/battery packs, small-size batteries/battery packs, secondary batteries, etc., and can solve problems such as reduced efficiency and deterioration of internal packaging performance
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no. 1 approach
[0048] Such as Figure 4 and Figure 5 As shown, in this embodiment, the heat exchange member 30 includes a heat exchange channel 31 and a cut hole 32 . The heat exchange passage 31 is formed by bending a part of the outer surface of the case 20 . The heat exchange passage 31 extends along the lateral direction of the housing 20 . The cross-sectional shape of the curved portion forming the heat exchange passage 31 is triangular. The heat exchange passage 31 is configured such that one corner of a triangle protrudes outward. The inner space of the heat exchange channel 31 is defined along the protruding corner. Cut holes 32 are formed at both ends of the heat exchange channel 31 . The cross-sectional shape of the heat exchange passage 31 is also triangular. Cut holes 32 are formed by cutting the case 20 at both ends of the heat exchange passage 31 . Accordingly, heat flows along the heat exchange passage 31 and is released to the outside through the cut hole 32 .
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no. 2 approach
[0051] Such as Figure 6 and Figure 7As shown, in this embodiment, the heat exchange member 30 includes a heat exchange channel 33 and a cut hole 34 . The heat exchange passage 33 is formed by bending a part of the outer surface of the casing 20 . The heat exchange passage 33 extends along the lateral direction of the housing 20 . The cross-sectional shape of the curved portion forming the heat exchange passage 33 is a rectangular shape. The heat exchange passage 33 is configured such that it protrudes outward from the outer surface of the casing 20 . A heat exchange channel 33 is defined along the inner space of the protruding portion of the housing 20 . The flow cross-sectional area of the heat exchange channel 33 in this embodiment is larger than that of the heat exchange channel in the first embodiment, thereby doubling the heat exchange efficiency.
[0052] The heat exchange member 30 may include a first heat exchange part 30 a formed on a first surface of the cas...
no. 3 approach
[0055] Such as Figure 9 As shown, the heat exchange member 30 according to the present embodiment includes a through hole 35 formed in the case 20 so that the bare cell 10 communicates with the outside through the through hole 35 . The heat exchanging member 30 comprises at least one, preferably a plurality of through holes 35, the number of which depends on the capacity of the battery. The size of each through hole 35 can be made larger or smaller according to the required cooling efficiency. Although the through hole 35 is described as being circular, the shape of the through hole 35 is not limited as long as the bare cell 10 can communicate with the outside through the through hole 35 .
[0056] The heat exchange member 30 of the present embodiment comprising through holes 35 is advantageous because it makes the housing 20 easy to manufacture and facilitates rapid heat exchange.
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