Battery packs and automobiles containing them

Abstract

The battery pack of the present invention includes a plurality of pouch-type battery cells, a pack case that houses the pouch-type battery cells in its internal space, and a cell cover configured to at least partially enclose the exteriors of at least a first battery cell and a second battery cell that are adjacent to each other among the plurality of pouch-type battery cells in the internal space of the pack case, and is characterized in that the cell cover includes a partition cover portion, a first side cover portion, a second side cover portion, an upper cover portion, and a lower cover portion.

Claims

[Claim 1] Multiple pouch-type battery cells, A pack case that houses the pouch-type battery cells in its internal space, A cell cover is configured to at least partially enclose the exteriors of at least adjacent first and second pouch-type battery cells among the plurality of pouch-type battery cells within the internal space of the pack case, Includes, The cell cover is A partition cover portion is positioned between one side of the first pouch-type battery cell and one side of the second pouch-type battery cell to separate the first pouch-type battery cell and the second pouch-type battery cell, A first side cover portion facing the partition cover portion so as to cover the other side of the first pouch-type battery cell, A second side cover portion facing the partition cover portion so as to cover the other side of the second pouch-type battery cell, An upper cover portion is connected to the upper end of the first side cover portion at the upper end of the partition cover portion so as to enclose the upper side of the first pouch-type battery cell, A lower cover portion is connected to the lower end of the second side cover portion at the lower end of the partition cover portion so as to enclose the lower side of the second pouch-type battery cell, Includes, The cell cover is The lower part of the first pouch-type battery cell is exposed toward the inner surface of the pack case, The upper part of the second pouch-type battery cell is exposed toward the inner surface of the pack case, It is configured to form, The aforementioned pack case is In the first pouch-type battery cell, a lower vent is provided at least in part of the position corresponding to the lower opening so that the gas generated can be discharged to the outside through the lower opening, An upper vent portion is provided at least in part of the position corresponding to the upper opening in the second pouch-type battery cell so that the gas generated can be discharged to the outside through the upper opening, A battery pack equipped with this feature. [Claim 2] The first pouch-type battery cell is, In an upright position, it is positioned between the first side cover portion and the partition cover portion. The second pouch-type battery cell is, The battery pack according to claim 1, which is positioned between the second side cover portion and the partition cover portion in an upright position. [Claim 3] The aforementioned upper cover portion is, It comprises a first particle pocket configured to be separate from the first pouch-type battery cell and configured to collect particles ejected from the first pouch-type battery cell when a thermal event occurs, The aforementioned lower cover portion is A second particle pocket is configured to be separate from the second pouch-type battery cell and to collect particles ejected from the second pouch-type battery cell when a thermal event occurs, The battery pack according to claim 2, comprising: [Claim 4] The aforementioned upper cover portion is, It protrudes toward the upper part of at least one of the two side portions, and the central part where the two side portions are connected is formed in a concave shape toward the lower part. The aforementioned lower cover portion is The battery pack according to claim 3, wherein it protrudes toward the lower part of at least one of the two side portions, and the central part to which the two side portions are connected is formed in a concave shape toward the upper part. [Claim 5] The aforementioned upper cover portion is, It protrudes gradually from the central part upward toward at least one of the two side portions on both sides, The aforementioned lower cover portion is The battery pack according to claim 4, wherein the battery pack protrudes progressively from the central part downward toward at least one of the two side portions. [Claim 6] Multiple pouch-type battery cells, A pack case that houses the pouch-type battery cells in its internal space, A cell cover is configured to at least partially enclose the exteriors of at least adjacent first and second pouch-type battery cells among the plurality of pouch-type battery cells within the internal space of the pack case, Includes, The cell cover is A partition cover portion is positioned between one side of the first pouch-type battery cell and one side of the second pouch-type battery cell to separate the first pouch-type battery cell and the second pouch-type battery cell, A first side cover portion facing the partition cover portion so as to cover the other side of the first pouch-type battery cell, A second side cover portion facing the partition cover portion so as to cover the other side of the second pouch-type battery cell, An upper cover portion is connected to the upper end of the first side cover portion at the upper end of the partition cover portion so as to enclose the upper side of the first pouch-type battery cell, A lower cover portion is connected to the lower end of the second side cover portion at the lower end of the partition cover portion so as to enclose the lower side of the second pouch-type battery cell, Includes, The cell cover is The pack case is provided with an insertion pin that protrudes toward the inner surface of the pack case from at least one of the first side cover portion and the second side cover portion so as to be inserted into the pack case, The aforementioned pack case is It has an insertion pin housing portion configured on its inner surface to accommodate the insertion pin, The cell cover is The lower part of the first pouch-type battery cell is exposed toward the inner surface of the pack case, The upper part of the second pouch-type battery cell is exposed toward the inner surface of the pack case, It is configured to form, The aforementioned pack case is In the first pouch-type battery cell, a lower vent is provided at least in part of the position corresponding to the lower opening so that the gas generated can be discharged to the outside through the lower opening, An upper vent portion is provided at least in part of the position corresponding to the upper opening in the second pouch-type battery cell so that the gas generated can be discharged to the outside through the upper opening, A battery pack equipped with this feature. [Claim 7] The insertion pin and the insertion pin housing are The battery pack according to claim 6, wherein it is positioned adjacent to at least one of the upper vent portion and the lower vent portion. [Claim 8] The aforementioned insertion pin is The insertion part that is inserted into the aforementioned pack case, The insertion portion is provided in a position where it is connected to at least one of the first side cover portion and the second side cover portion, The battery pack according to claim 6, comprising: [Claim 9] The aforementioned deformed portion is The battery pack according to claim 8, wherein the insertion pin is provided at the same height as the inner surface of the pack case when it is inserted into the pack case. [Claim 10] The aforementioned battery pack is The battery pack according to claim 1, comprising thermal resin interposed in at least a portion of the space between the cell cover and the pack case and the space between the plurality of pouch-type battery cells and the pack case. [Claim 11] The thermal resin is The battery pack according to claim 10, wherein the space corresponding to the upper vent portion and the lower vent portion is not provided. [Claim 12] The battery pack according to claim 1, wherein the cell cover is formed in a shape that partially encloses the pouch-type battery cell such that at least one side of the enclosed pouch-type battery cell is exposed to the outside. [Claim 13] The battery pack according to claim 1, wherein the cell cover is configured such that at least one side of the enclosed pouch-type battery cell is exposed toward the inner surface of the pack case. [Claim 14] The battery pack according to claim 1, wherein the cell cover is directly mounted on the pack case. [Claim 15] The battery pack according to claim 1, wherein the cell cover includes an insulating coating layer on its inner surface. [Claim 16] The aforementioned cell covers are arranged in groups of several adjacent units. The battery pack according to claim 1, wherein an adhesive member is included in at least one of the first side cover portion and the second side cover portion of adjacent cell covers. [Claim 17] An automobile comprising a battery pack according to any one of claims 1 to 16.

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