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Air-cooling battery pack having improved assembling structure

專利號
US11177517B2
公開日期
2021-11-16
申請人
LG CHEM, LTD.（KR Seoul）
發(fā)明人
Jung-Hoon Lee; Eun-Gyu Shin; Byoung-Cheon Jeong; Dal-Mo Kang; Jeong-O Mun
IPC分類
H01M10/613; H01M10/647; H01M10/6565; H01M10/42; H01M50/20; H01M50/209; H01M10/6557; H01M10/6562; H01M10/6556; H01M10/6561
技術(shù)領(lǐng)域
bms,duct,air,pack,plate,battery,slider,cell,cooling,assembly
地域： Seoul

摘要

Disclosed is an air-cooling battery pack, which includes a cell assembly having a plurality of cells stacked therein; an air duct disposed to contact the cell assembly and having an air passage formed therein to allow a cooling air to move therethrough; a coupling groove formed at the air duct to elongate in a longitudinal direction; and a battery management system (BMS) plate having a BMS for managing the cells and assembled to the air duct by a slider slidably inserted into the coupling groove.

說明書

1 2 3 4 5 6 7 8 9 10 11 12
TECHNICAL FIELD

The present application claims priority to Korean Patent Application No. 10-2016-0170653 filed on Dec. 14, 2016 in the Republic of Korea, the disclosures of which are incorporated herein by reference.

BACKGROUND ART

Generally, a battery pack includes a plurality of cells aggregated by serial and/or parallel connections. The battery pack typically includes a cell assembly having a plurality of cells arranged in one direction and a frame having a plate capable of surrounding the cell assembly.

In a conventional battery pack, if a cooling channel is separately designed in an air cooling type for cooling battery cells, the space occupied by the cooling channel is separately required. For this reason, it is difficult to simplify the structure and the capacity of cells to be mounted is limited.

In other words, the conventional battery pack is generally configured so that a cooling air is introduced through an inlet at one side of a housing accommodating a cell assembly, is moved through an air gap and then is discharged through a cooling fin to an outlet at the other side.

However, it is difficult to reduce the weight of the battery pack configured as above. Moreover, a large space is required for installing components in the battery pack, and the space utilization in the thickness direction of the cells is reduced, thereby reducing the capacity and lowering the cooling performance due to low thermal conductivity. In addition, since the air gap and the cooling fin are required, the cost increases.

權(quán)利要求

1
What is claimed is:1. An air-cooling battery pack, comprising:a cell assembly having a plurality of cells stacked therein, the plurality of cells being pouch-type battery cells stacked against each other in a thickness direction;an air duct disposed to contact the cell assembly along the entire thickness of the stack, the air duct having an air passage formed therein, the air passage being configured to allow a cooling air to move therethrough in a longitudinal direction perpendicular to the thickness direction;a coupling groove formed at the air duct to elongate in the longitudinal direction; anda battery management system (BMS) plate having a BMS for managing the cells and assembled to the air duct by a slider slidably inserted into the coupling groove,wherein the air duct is respectively disposed at both side edges of the cell assembly.2. The air-cooling battery pack according to claim 1, wherein:the slider is respectively provided at both side edges of the BMS plate; andthe coupling groove is provided at the top of the air duct.3. The air-cooling battery pack according to claim 2, wherein:a guide rib elongating in the longitudinal direction is formed at a top surface of the air duct to be integrated with the air duct; andthe coupling groove has a section with a ‘?’ shape and is formed at the guide rib so that an opening thereof is oriented toward the inside of the battery pack.4. The air-cooling battery pack according to claim 3, wherein the slider has a gradient structure with a gradually increasing thickness in a direction opposite to an inserting direction thereof.5. The air-cooling battery pack according to claim 4, wherein:the air duct is made of aluminum material; andthe slider is made of plastic material and is inserted into the coupling groove.6. The air-cooling battery pack according to claim 5, further comprising:a fixing portion having a hole or groove form; anda stopper having a hook form and provided at a part of the BMS plate with plastic material, the stopper being coupled to the fixing portion in a state where the slider is completely inserted.7. The air-cooling battery pack according to claim 2, wherein a truss structure is provided inside the air duct.8. An air-cooling battery pack, comprising:a cell assembly including a plurality of cells stacked therein, the plurality of cells being pouch-type battery cells stacked against each other in a thickness direction;an air duct in contact with an edge side of the cell assembly along the entire thickness of the stack, the air duct defining an air passage in a longitudinal direction, perpendicular to the thickness direction, to allow a cooling air to move therethrough;a coupling groove defined at a top of the air duct and extending in the longitudinal direction; anda battery management system (BMS) plate having a BMS to manage the cells and attached to the air duct by a slider slidably inserted into the coupling groove,wherein the air duct is respectively disposed at both side edges of the cell assembly.9. The air-cooling battery pack according to claim 8, wherein:the slider is respectively provided at both side edges of the BMS plate;the coupling groove is provided at both sides at the top of the air duct; andthe slider is slidably inserted into the coupling groove at both sides of the air duct.10. The air-cooling battery pack according to claim 8, wherein:a guide rib elongated in the longitudinal direction is formed at a top surface of the air duct to be integrated with the air duct; andthe coupling groove has a cross-sectional with a ‘?’ shape and is formed at the guide rib so that an opening thereof is oriented toward the inside of the battery pack.11. The air-cooling battery pack according to claim 8, wherein the slider has an inclined upper surface structure such that the slider has a gradually increasing thickness in a direction opposite to an inserting direction thereof.12. The air-cooling battery pack according to claim 8, wherein:the air duct is made of aluminum; andthe slider is made of plastic.13. The air-cooling battery pack according to claim 12, further comprising:a fixing portion having a hole or groove form; anda stopper having a hook form, the stopper being provided at a part of the BMS plate made of plastic, the stopper being coupled to the fixing portion in a state in which the slider is completely inserted into the coupling groove.14. The air-cooling battery pack according to claim 8, wherein a truss structure is inside the air duct.15. The air-cooling battery pack according to claim 7, wherein a plurality of uneven patterns are on a surface of the truss structure.16. The air-cooling battery pack according to claim 14, wherein a plurality of uneven patterns are on a surface of the truss structure.
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