Battery cell assembly and battery pack

Abstract

According to an exemplary embodiment of the present invention for solving the problems of the prior art, a battery cell assembly is provided. The battery cell assembly includes a plurality of battery cells arranged in a first direction, and a fire-resistant structure disposed on the plurality of battery cells, the fire-resistant structure being in contact with each of the plurality of battery cells and having a corrugated structure.

Claims

1. Multiple battery cells arranged in the first direction, Includes a fire-resistant structure arranged on the plurality of battery cells, The fire-resistant structure is in contact with each of the plurality of battery cells and has a corrugated structure. Battery cell assembly.

2. The corrugated structure includes first and second wrinkles arranged along a first direction. The shapes of the first and second wrinkles are different. The battery cell assembly according to claim 1.

3. The first wrinkle includes a first slope oblique to the first direction and a second slope oblique to the first direction. The second fold includes a third slope oblique to the first direction and a fourth slope oblique to the first direction. The battery cell assembly according to claim 2.

4. The battery cell assembly according to claim 3, wherein the magnitude of the first incline of the first slope is different from the magnitude of the second incline of the second slope.

5. The battery cell assembly according to claim 4, wherein the magnitude of the first inclination is smaller than the magnitude of the second inclination.

6. The battery cell assembly according to claim 3, wherein the magnitude of the third slope of the third slope is different from the magnitude of the fourth slope of the fourth slope.

7. The battery cell assembly according to claim 6, wherein the magnitude of the third inclination is smaller than the magnitude of the fourth inclination.

8. The battery cell assembly according to claim 6, wherein the magnitude of the third incline is the same as the magnitude of the first incline of the first slope.

9. The battery cell assembly according to claim 6, wherein the magnitude of the fourth incline is the same as the magnitude of the second incline of the second slope.

10. The battery cell assembly according to claim 1, wherein the fire-resistant structure includes multiple layers.

11. The aforementioned fire-resistant structure includes the first to third layers, The first layer is a fire-resistant adhesive tape, the second layer includes a fire-resistant sheet, and the third layer includes a fire-resistant coating. The battery cell assembly according to claim 1.

12. The battery cell assembly according to claim 11, wherein the second layer may include one of PO (propylene oxide), PU (Polyurethane), aramid film, NCG (Non Combustible Glass Fiber Sheet), and glass fiber-containing mPPO (Modified Polyphenylene Oxide).

13. The battery cell assembly according to claim 11, wherein the third layer includes ceramic.

14. The battery cell assembly according to claim 11, wherein the thickness of the third layer is greater than the thickness of the first layer.

15. The battery cell assembly according to claim 11, wherein the thickness of the third layer is greater than the thickness of the second layer.

16. The thickness of the third layer is 25 μm or more. The thickness of the third layer is 30 μm or less. The battery cell assembly according to claim 11.

17. The sum of the thicknesses of the first to third layers is 40 μm or more. The sum of the thicknesses of the first to third layers is 50 μm or less. The battery cell assembly according to claim 11.

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