Tray, tray assembly, battery pack assembly and vehicle

Patent metadata

Field	Value
Publication number	US-10749223-B2
Application number	US-201716092573-A
Country	US
Kind code	B2
Filing date	Mar 30, 2017
Priority date	Apr 11, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A tray, a tray assembly, a battery pack assembly and a vehicle are provided. The tray includes a bottom plate having a plurality of sub-bottom plates and a flow channel in at least one of the plurality of sub-bottom plates. The at least one of the plurality of sub-bottom plates is configured to support a battery assembly. The tray further includes a frame disposed around and configured to support the bottom plate. The tray provides a reduced volume requirement on the cavity for holding the battery assembly. The flow channels are arranged more concisely, and a water cooling mode and an air cooling mode are employed in the tray.

First claim

What is claimed is:

1. A tray, comprising:
a bottom plate comprising a plurality of sub-bottom plates including at least one first sub-bottom plate and at least one second sub-bottom plate, wherein the at least one first sub-bottom plate and the at least one second sub-bottom plate are individual plates and are in parallel to each other in a same plane,
wherein the at least one first sub-bottom plate comprises a flow channel, a heat exchange medium flows in the flow channel, the at least one first sub-bottom plate is configured to cool a battery assembly, and the battery assembly is mounted on the at least one first sub-bottom plate, and
wherein the at least one second sub-bottom plate includes no flow channel, and the battery assembly is not mounted on the at least one second sub-bottom plate; and

a frame surrounding edges of the at least one first sub-bottom plate and the at least one second sub-bottom plate, wherein the at least one first sub-bottom plate and the at least one second sub-bottom plate are connected to the frame.

2. The tray according to claim 1 , wherein the
at least one second sub-bottom plate is spliced or staggered with the at least one first sub-bottom plate.

3. The tray according to claim 2 , wherein the at least one first sub-bottom plate is connected in parallel to the flow channel in a one-to-one correspondence to at least another one first sub-bottom plate.

4. The tray according to claim 2 , wherein the at least one first sub-bottom plate comprises:
a first part, wherein a plurality of channels is provided in the first part; and
two second parts, wherein the two second parts are respectively disposed at two ends of the first part, at least one groove opening toward the first part is provided in each second part, and the plurality of channels is in communication with the groove to form the flow channel.

5. The tray according to claim 4 , further comprising a pipe connector disposed on each second part, where the flow channel is configured to communicate with a heat exchange device with the pipe connector.

6. The tray according to claim 1 , wherein the at least one first sub-bottom plate comprises:
a main body part comprising a flow path, wherein a middle portion of the flow path is provided with a plurality of opening portions; and
a plurality of seal portions connected to the main body part, sealing the plurality of opening portions in a one-to-one correspondence to form the flow channel.

7. The tray according to claim 6 , further comprising at least two connectors disposed on the main body part, wherein a heat exchange device is in communication with the flow channel with the connectors.

8. The tray according to claim 1 , wherein the at least one first sub-bottom plate and the flow channel are integrally formed through injection molding.

9. The tray according to claim 1 , wherein the flow channel is formed through extrusion or by inserting a metal pipe into a slot of the bottom plate.

10. The tray according to claim 1 , wherein the at least one first sub-bottom plate comprises an upper plate and a lower plate, and the upper plate and the lower plate are connected to define the flow channel between the upper plate and the lower plate.

11. The tray according to claim 1 , wherein a surface of the bottom plate away from the battery assembly is covered with heat preservation cotton.

12. A tray assembly, comprising:
the tray according to claim 1 ; and
a heat exchange device configured to drive the heat exchange medium to flow in the flow channel.

13. A battery pack assembly, comprising:
at least one battery assembly; and
a tray comprising:
a bottom plate comprising a plurality of sub-bottom plates including at least one first sub-bottom plate and at least one second sub-bottom plate, wherein the at least one first sub-bottom plate and the at least one second sub-bottom plate are individual plates and are in parallel to each other in a same plane,
wherein the at least one first sub-bottom plate comprises a flow channel, a heat exchange medium flows in the flow channel, the at least one first sub-bottom plate is configured to cool the at least one battery assembly, and the at least one battery assembly is mounted on the at least one first sub-bottom plate, and
wherein the at least one second sub-bottom plate includes no flow channel, and the at least one battery assembly is not mounted on the at least one second sub-bottom plate, and;
a frame surrounding edges of the at least one first sub-bottom plate and the at least one second sub-bottom plate, wherein the at least one first sub-bottom plate and the at least one second sub-bottom plate are connected to the frame.

14. The battery pack assembly according to claim 13 , wherein each of the at least one battery assembly comprises:
a battery; and
a cooling plate, wherein the battery is connected to the tray with the cooling plate.

15. The battery pack assembly according to claim 14 , wherein the cooling plate comprises:
a plate body comprising a mounting slot; and
a heat pipe disposed in the mounting slot.

16. The battery pack assembly according to claim 15 , wherein the mounting slot comprises:
a first mounting slot located at a first side of the plate body toward the battery; and
a second mounting slot located at a second side of the plate body away from the battery.

17. The battery pack assembly according to claim 16 , wherein the second mounting slot and the first mounting slot are staggered with each other.

18. The battery pack assembly according to claim 14 , further comprising:
a plurality of cooling plates, and
a batten extending along circumference of the battery, wherein each of the plurality of cooling plates is attached to the battery and is fastened with the batten.

19. The battery pack assembly according to claim 13 , further comprising:
a heat conduction pad disposed between the tray and the at least one battery assembly; and
an enclosure connected to the tray to form a cavity for holding the at least one battery assembly.

20. A vehicle, provided with the battery pack assembly according to claim 13 .

Assignees

• Byd Co Ltd

Inventors

• Lu Zhipei
• Zhang Xuefeng
• Lu Jia
• Peng Qingbo
• Liu Wei
• Zhu Jianhua

Classifications

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• F28F2220/00

  Closure means, e.g. end caps on header boxes or plugs on conduits · CPC title

• F28D15/0275

  Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores · CPC title

• F28F21/085

  from copper or copper alloys · CPC title