Battery packs and devices containing them
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2023-08-31
- Publication Date
- 2026-06-23
AI Technical Summary
【0026】 本発明によれば、電池セルを空間効率的にパックケースに収納することができ、従来の電池パックに比べてエネルギー密度が高く、組み立て工程が簡素化され、また、ベンティングガスの流れをより安全な方向に誘導することができる電池パックおよびこれを含むデバイスを提供することができる。
Smart Images
Figure 0007878810000001 
Figure 0007878810000002 
Figure 0007878810000003
Abstract
Claims
1. A plurality of cell units, each comprising at least one battery cell and a cell cover that encloses and supports the at least one battery cell, A pack case that houses and supports the multiple cell units within its internal space. Includes, The cell cover is A pair of side cover portions that cover one side and the other side of at least one battery cell, A cap portion that connects the pair of side cover portions and covers the upper end of at least one battery cell. Includes, The cell cover further includes a gas shut-off portion located adjacent to the cap portion at the longitudinal end of the cell cover, The upper edge portion of at least one battery cell and the cap portion are separated, forming a gas transfer passage that extends along the longitudinal direction. The gas transport passage communicates with the vertical transport passage toward the lower end of the battery cell at the gas shutoff section. The battery pack comprises a gas shutoff unit which includes a gas direction changing unit that guides the flow of gas that has moved through the gas movement passage into the vertical movement passage.
2. A plurality of cell units each comprising at least one battery cell and a cell cover that encloses and supports the at least one battery cell, and A pack case that houses and supports the multiple cell units within its internal space. Includes, The cell cover is A pair of side cover portions that cover one side and the other side of at least one battery cell, A cap portion that connects the pair of side cover portions and covers the upper end of at least one battery cell. Includes, The cell cover further includes a gas shut-off portion located adjacent to the cap portion at the longitudinal end of the cell cover, The upper edge portion of at least one battery cell and the cap portion are separated, forming a gas transfer passage that extends along the longitudinal direction. The gas transport passage communicates with the vertical transport passage toward the lower end of the battery cell at the gas shutoff section. The aforementioned pack case is equipped with an exhaust safety passage for exhausting gas to the outside, The aforementioned vertical movement passage communicates with the aforementioned exhaust safety passage, and is a battery pack.
3. The battery pack according to claim 1, wherein the gas direction conversion portion is one surface of the gas shut-off portion facing the inside of the cell cover.
4. The battery pack according to claim 3, wherein the gas direction conversion section is an arc-shaped curved surface facing the inside of the cell cover.
5. The battery pack according to claim 3, wherein the gas direction changing section is an inclined surface that connects the upper surface and side surface of the gas shutoff section and faces the inside of the cell cover.
6. The battery pack according to claim 3, wherein the gas shut-off portion further includes an extension portion extending from the gas direction conversion portion toward the lower end of the battery cell.
7. The battery pack according to claim 1 or 2, wherein the cell cover includes stainless steel (SUS).
8. The battery pack according to claim 7, wherein the gas shut-off section is provided integrally with the cell cover.
9. The battery pack according to claim 1 or 2, wherein the gas shut-off section is provided in a separate block configuration from the cell cover.
10. The battery pack according to claim 9, wherein the gas shutoff portion includes a fire-resistant material.
11. A device comprising the battery pack according to claim 1 or 2.