Battery device and vehicle

Abstract

The present disclosure relates to a battery device and a vehicle. The battery device comprises a battery box and a battery module arranged in the battery box. The battery module comprises a plurality of battery units and a plurality of heat exchange plates. The plurality of battery units are arranged along a first direction. The plurality of battery units are first units and even-numbered second units. The first units are closer to a first beam of the battery box than the second units in the first direction. Each two second units form a group. The plurality of heat exchange plates comprise a first heat exchange plate and at least two second heat exchange plates. The first heat exchange plate is arranged on a side of the first units away from the second units. The second heat exchange plates are arranged on both sides of the groups in the first direction. One second heat exchange plate is arranged between adjacent two groups.

Claims

1. A battery device comprising a battery case and a battery module (100) provided inside the battery case; characterized by, The battery module (100) includes: Multiple battery cells (110) are arranged along a first direction, and the multiple battery cells (110) are respectively a first cell (1101) and an even number of second cells (1102); the first cell (1101) is closer to the first beam (210) of the battery box than the second cells (1102) in the first direction; every two second cells (1102) form a group; Multiple heat exchange plates (120) include a first heat exchange plate (1201) and at least two second heat exchange plates (1202); the first heat exchange plate (1201) is disposed on the side of the first unit (1101) facing away from the second unit (1102); the second heat exchange plates (1202) are disposed on both sides of the group in the first direction, and one second heat exchange plate (1202) is disposed between two adjacent groups.

2. The battery device according to claim 1, characterized by The thickness (D1) of the first heat exchange plate (1201) is less than the thickness (D2) of the second heat exchange plate (1202).

3. The battery device of claim 1, wherein The heat exchange plate (120) is a flow channel plate, which has a flow channel for the heat exchange medium to flow through; wherein, the wall thickness of the first heat exchange plate (1201) is less than the wall thickness of the second heat exchange plate (1202).

4. The battery device of claim 1, wherein The second heat exchange plate (1202) located on the side of the second unit (1102) furthest from the first unit (1101) is a third heat exchange plate (1203); wherein: The thickness of the third heat exchange plate (1203) is less than the thickness of the remaining second heat exchange plates (1202); and / or The heat exchange plate (120) is a flow channel plate, which has a flow channel for the heat exchange medium to flow through. The wall thickness of the third heat exchange plate (1203) is less than the wall thickness of the other second heat exchange plates (1202).

5. The battery device of claim 1, wherein The heat exchange efficiency of the first heat exchange plate (1201) is lower than that of the second heat exchange plate (1202).

6. The battery device according to claim 5, characterized in that, The heat exchange plate (120) is a flow channel plate with a flow channel for the heat exchange medium to flow through. The heat exchange plate (120) has a collector (130) on both sides in a second direction, which is perpendicular to the first direction. One collector (130) is provided with an inlet (131), and the other collector (130) is provided with an outlet (132). The two collectors (130) are connected through the flow channel of the heat exchange plate (120). The heat exchange medium flows along the flow path in the flow channel of the heat exchange plate (120). The length of the flow path of the first heat exchange plate (1201) is shorter than the length of the flow path of the second heat exchange plate (1202).

7. The battery device of claim 5, wherein The battery device includes a carrier plate, and the battery module (100) is disposed on the carrier plate; the heat exchange plate (120) is a flow channel plate, which has a flow channel for the heat exchange medium to flow through; wherein: The flow channel of the first heat exchange plate (1201) is located at one end of the first heat exchange plate (1201) near the carrier plate, and no flow channel is provided in the middle part of the first heat exchange plate (1201) and the other end away from the carrier plate; or The number of flow channels provided at one end of the first heat exchange plate (1201) near the carrier plate is greater than the number of flow channels provided at the middle and the other end.

8. The battery device of claim 7, wherein, The heat exchange plate (120) is provided with collectors (130) on both sides in the second direction; the first heat exchange plate (1201) is provided with a plurality of straight flow channels that are arranged vertically and horizontally and extend along the second direction. The two ends of the flow channel located at the end of the first heat exchange plate (1201) near the carrier plate are respectively connected to two collectors (130), and the remaining flow channels are respectively provided with sealing members and are blocked.

9. The battery device according to claim 6, characterized in that: The flow path of the second heat exchange plate (1202) is serpentine; or The flow path of the second heat exchange plate (1202) is a series of relatively parallel straight paths; or The second heat exchange plate (1202) is provided with multiple flow channels arranged at intervals, and some of the flow channels are blocked by sealing elements; the collector (130) is provided with a connecting structure, which connects the unblocked flow channels.

10. The battery device of claim 1, wherein The heat exchange plate (120) is a flow channel plate, which has a flow channel for the heat exchange medium to flow through; wherein, the flow area of ​​the flow channel of the first heat exchange plate (1201) is smaller than the flow area of ​​the flow channel of the second heat exchange plate (1202).

11. The battery device of claim 10, wherein, The heat exchange plate (120) is provided with a collector (130), and the flow channels of the heat exchange plate (120) are connected to the medium pipeline via the collector (130); the heat exchange plate (120) is provided with multiple flow channels, and the multiple flow channels are connected to the collector (130) in parallel; the first heat exchange plate (1201) and the second heat exchange plate (1202) have the same structure; wherein: A portion of the flow channel of the first heat exchange plate (1201) is provided with a sealing element; or A portion of the flow channels of the first heat exchange plate (1201) is provided with a sealing element, and a portion of the flow channels of the second heat exchange plate (1202) is provided with a sealing element. The number of flow channels of the first heat exchange plate (1201) with sealing elements is greater than the number of flow channels of the second heat exchange plate (1202) with sealing elements.

12. The battery device according to claim 1, characterized in that: The battery cell (110) includes a plurality of individual cells (111) arranged along a second direction, which is perpendicular to the first direction; or The battery cell (110) includes a single cell (111).

13. The battery device of claim 1, wherein, When the battery device is installed in a vehicle, the first beam (210) of the battery housing faces the direction of travel of the vehicle.

14. A vehicle characterized by comprising: The vehicle includes the battery device according to any one of claims 1 to 13.

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