Battery box, battery and electrical device

Abstract

A battery box, a battery, and an electrical device. The battery box includes a side plate and a bottom plate. The side plate is provided on the bottom plate surrounding the outer edge of the bottom plate. The bottom plate has a cavity, and a partition member is provided in the cavity. The partition member forms at least two flow paths that isolate the cavity and guide the flow along the first flow guiding direction. Since the flow guiding directions of each flow path are the same, the flows of each heat exchange working medium separated by each flow path in the cavity can respectively perform heat exchange on each battery cell arranged in a direction intersecting the first flow guiding direction at the same time, the heat exchange of the battery cells is uniform, and the temperature difference between the battery cells can be reduced.

Claims

1. Side panel (11) and A battery box (10) including a bottom plate (12), wherein the side plate (11) is provided on the bottom plate (12) surrounding the outer edge of the bottom plate (12), The bottom plate (12) has a cavity (12a), and an isolation member (12b) is provided within the cavity (12a), and the isolation member (12b) isolates the cavity (12a) and forms at least two flow channels (s) which both guide the flow along a first flow guidance direction (F1). The bottom plate (12) includes at least one working medium inlet (i) and at least one working medium outlet (u), Each of the aforementioned flow paths (s) has an inlet end (i1) and an outlet end (u1) provided opposite to the first flow guidance direction (F1), and the working medium inlet (i) communicates with either of the inlet ends (i1), and the working medium outlet (u) communicates with either of the outlet ends (u1), in a battery box (10).

2. The battery box (10) according to claim 1, wherein the isolation member (12b) includes a first isolation member (b1), and the end of the first isolation member (b1) near the inlet end (i1) of the flow path (s) connects two adjacent flow paths (s) to itself.

3. The battery box (10) according to claim 2, characterized in that, in the first flow guidance direction (F1), the end of each of the first isolation members (b1) closest to the inlet end (i1) is provided at a distance from the inner wall of the cavity (12a).

4. The battery box (10) according to any one of claims 1 to 3, wherein the isolation member (12b) includes a second isolation member (b2), and in the first flow guidance direction (F1), the end of the second isolation member (b2) near the inlet end (i1) of the flow path (s) cooperates with the inner wall of the cavity (12a) to prevent the heat exchange working medium from flowing between the two flow paths (s) adjacent to itself.

5. The battery box (10) according to claim 4, characterized in that, in the first flow guidance direction (F1), the end of the second isolation member (b2) near the inlet end (i1) of the flow path (s) is connected to the inner wall of the cavity (12a).

6. The battery box (10) according to any one of claims 1 to 3, characterized in that, in the first flow guidance direction (F1), the end of at least one of the isolation members (12b) near the outlet end (u1) of the flow path (s) is configured to connect adjacent flow paths (s).

7. The battery box (10) according to claim 6, characterized in that the end of at least one of the isolation members (12b) near the outlet end (u1) of the flow path (s) is provided at a distance from the inner wall of the cavity (12a).

8. The battery box (10) according to claim 1, characterized in that the outlet ends (u1) of each of the aforementioned flow paths (s) are in communication with one another.

9. The battery box (10) according to claim 1, characterized in that the working medium inlet (i) and the working medium outlet (u) are located on opposite sides of the bottom plate (12) in the first flow guide direction (F1), the working medium inlet (i) is provided near the inlet end (i1) of the flow path (s), and the working medium outlet (u) is provided near the outlet end (u1) of the flow path (s).

10. The bottom plate (12) further includes a first retaining rib (12c), and a water retention channel (k) is defined by the first retaining rib (12c) and the inner wall of the cavity (12a), and the water retention channel (k) is in communication with the working medium inlet (i), The battery box (10) according to claim 1, characterized in that a first fluid passage section (c1) is formed on the first retaining rib (12c), and the first fluid passage section (c1) connects the water retention channel (k) with the inlet end (i1) of the adjacent flow channel (s).

11. The bottom plate (12) further includes a second retaining rib (12d), and the second retaining rib (12d) and the inner wall of the cavity (12a) define an outlet channel (w). The battery box (10) according to claim 1, characterized in that a second fluid passage (d1) is formed on the second retaining rib (12d), the second fluid passage (d1) connects the outlet end (u1) of the adjacent flow path (s) to the outlet channel (w), and the outlet channel (w) communicates with the working medium outlet (u).

12. The working medium inlet (i) and the working medium outlet (u) are each provided as one, the working medium inlet (i) is in communication with the inlet end (i1) of all the flow paths (s), and the working medium outlet (u) is in communication with the outlet end (u1) of all the flow paths (s). The battery box (10) according to claim 1, characterized in that the working medium inlet (i) and the working medium outlet (u) are located on the same side of the bottom plate (12).

13. The battery box (10) according to claim 1, characterized in that the side plate (11) is provided with a general working medium inlet (I) and a general working medium outlet (U), the working medium inlet (i) communicates with the general working medium inlet (I), and the working medium outlet (u) communicates with the general working medium outlet (U).

14. The battery box (10) according to claim 13, characterized in that a space is provided within the side plate (11) to connect the working medium inlet (i) and the working medium general inlet (I), and / or a space is provided within the side plate (11) to connect the working medium outlet (u) and the working medium general outlet (U).

15. A battery box (10) according to any one of claims 1 to 3, A battery comprising a battery cell (20) housed in the aforementioned battery box (10).

16. The battery (100) further includes a thermal management member (30), the thermal management member (30) is located in a space formed by the side plate (11) and the bottom plate (12) surrounding it, and is provided on the side plate (11), The battery according to claim 15, characterized in that the heat management member (30) is in surface contact with at least one of the battery cells (20) and has a flow space through which a heat exchange working medium flows.

17. The bottom plate (12) includes an operating medium inlet (i) and an operating medium outlet (u), and the side plate (11) is provided with an operating medium general inlet (I) and an operating medium general outlet (U). The battery according to claim 16, characterized in that the working medium inlet (i) and the working medium general inlet (I) are in communication via the flow space, and / or the working medium outlet (u) and the working medium general outlet (U) are in communication via the flow space.

18. An electrical device comprising a battery (100) according to claim 15 for providing electrical energy.

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