Heat transfer device and energy storage module

Patent metadata

Field	Value
Publication number	US-11549759-B2
Application number	US-201816767361-A
Country	US
Kind code	B2
Filing date	Nov 16, 2018
Priority date	Dec 1, 2017
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A heat transfer device includes a bag and a working fluid. The bag includes a first sheet and a second sheet with edges that are sealed together. The working fluid is enclosed in the bag. The working fluid changes a phase thereof between gas and liquid. The bag includes a vaporizing portion in which the liquid-phase working fluid is vaporized and a condensing portion in which the gas-phase working fluid is condensed. The bag includes a two-phase flow channel in which liquid-gas two-phase slug flow including the liquid-phase working fluid and the gas-phase working fluid occurs from the vaporizing portion to the condensing portion. The two-phase flow channel is provided in an internal space of the bag.

First claim

The invention claimed is:

1. A heat transfer device comprising:
a bag including sheets with edges sealed together; and
a working fluid enclosed in the bag and configured to change phase thereof between gas and liquid, wherein
the bag includes a vaporizing portion in which the working fluid in liquid phase is vaporized and a condensing portion in which the working fluid in gas phase is condensed,
the bag includes a two-phase flow channel in which liquid-gas two-phase slug flow including the working fluid in the liquid phase and the working fluid in the gas phase occurs from the vaporizing portion to the condensing portion, the two-phase flow channel being provided in an internal space of the bag,
the bag includes a divider disposed in the internal space of the bag,
the bag and the divider define a space therebetween,
the space includes the two-phase flow channel extending from the vaporizing portion to the condensing portion,
the working fluid has a volume such that a percentage of the volume relative to a spatial volume calculated by subtracting an internal volume of the bag from a volume of the divider is equal to or greater than 50%,
the divider includes a nonwoven fabric, and
the volume of the divider is defined based on an assumption that the divider is solid.

2. The heat transfer device according to claim 1 , wherein
the bag includes a liquid-phase flow channel in which the working fluid in the liquid phase moves from the condensing portion to the vaporizing portion, and
the liquid phase flow channel is provided in the internal space of the bag.

3. The heat transfer device according to claim 2 , wherein
the liquid-phase flow channel is located closer to an edge of the bag to extend from the vaporizing portion to the condensing portion.

4. The heat transfer device according to claim 1 , wherein the divider includes fibers having affinity for the working fluid in the liquid phase.

5. An energy storage module comprising:
the heat transfer device according to claim 1 ; and
an energy storage component contacting the heat transfer device to be heat-exchangeable.

6. The heat transfer device according to claim 1 , wherein the volume of the working fluid is a volume of the working fluid in the liquid phase.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries

Inventors

• KUBOKI Hideyuki
• Hirai Hiroki
• Higashikozono Makoto
• Hiramitsu Hiroomi
• Hosoe Akihisa
• Hirose Yoshiyuki
• Nagafuchi Akihiro
• Takeyama Tomoharu
• Kobayashi Eiichi

Classifications

• H01M50/20

  Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) · CPC title

• H01M10/6569

  Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation (heat pipes H01M10/6552) · CPC title

• F28F21/06

  of plastics material · CPC title

• F28D2021/0029

  Heat sinks · CPC title

• F28D15/0233

  the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence) · CPC title