Use of an absorber material for absorbing and / or distributing liquids in an actively and / or passively cooled current-carrying system

Patent metadata

Field	Value
Publication number	US-11857947-B2
Application number	US-202117381255-A
Country	US
Kind code	B2
Filing date	Jul 21, 2021
Priority date	Jul 27, 2020
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A method includes: providing an absorber material including: a casing; and superabsorbent particles arranged therein, and using the absorber material to absorb and/or distribute liquids in an actively and/or passively cooled current-carrying system including an actively and/or passively cooled power storage system. The casing has at least two plies arranged in a planar fashion on one another. Regions of the at least two plies are connected to one another by at least one seam such that the casing is segmented in a form of pockets separated from one another. At least some of the pockets have the superabsorbent particles.

First claim

What is claimed is:

1. A method, comprising:
providing an absorber material, comprising:
a casing; and
superabsorbent particles arranged therein, and

using the absorber material to absorb and/or distribute liquids in an actively and/or passively cooled current-carrying system comprising an actively and/or passively cooled power storage system,
wherein the casing comprises at least two plies arranged in a planar fashion on one another,
wherein regions of the at least two plies are connected to one another by at least one seam such that the casing is segmented in a form of pockets separated from one another,
wherein the at least one seam is configured to transport liquid between the pockets, and
wherein at least some of the pockets have the superabsorbent particles.

2. The method according to claim 1 , wherein the seam comprises a welded seam comprising a thermally and/or ultrasonically welded seam, glued seam, and/or stitched seam.

3. The method according to claim 1 , wherein the current-carrying system comprises:
a power storage system comprising a battery system,
a current-carrying energy converter,
a transformer,
a power electronics system,
a control electronics system comprising a processor-controlled system,
a charging station,
an inverter,
a rectifier,
an electrolyzer, and/or
combinations thereof.

4. The method according to claim 1 , wherein the liquids to be received by the absorber material comprise cooling liquids and/or water.

5. The method according to claim 1 , wherein the seam is discontinuous.

6. The method according to claim 1 , wherein a seam area is at least 0.4 to 50 area % based on a total area of the absorber material.

7. The method according to claim 1 , wherein the seam comprises a welded seam which is perforated in a center thereof.

8. The method according to claim 1 , wherein the seam comprises a welded seam, and a thickness of the welded seam increases in a direction of at least one pocket adjacent to the welded seam.

9. The method according to claim 1 , wherein a number of pockets per m 2 of absorber material is in a range from 4 to 400 pockets per square meter.

10. The method according to claim 1 , wherein an amount of superabsorbent particles is from 20 to 1000 g/m2, based on an area of the absorber material.

11. The method according to claim 1 , wherein an amount of superabsorbent particles is 0.5 g to 500 g per pocket.

12. The method according to claim 1 , wherein at least one pocket, in addition to the superabsorbent particles, comprises a filler material comprising absorbent materials comprising cellulose pulp, fibers, guar, silica gel and/or foam, in an amount of from 5 to 90 wt %.

13. The method according to claim 1 , wherein the at least one ply of the casing has a textile fabric comprising a nonwoven, a woven, a knitted fabric, and/or an open-pored foam.

14. The method according to claim 13 , wherein an average pore size of the textile fabric, measured in accordance with ASTM E 1294-89, is from 1 to 1000 μm.

15. The method according to claim 1 , wherein the absorber material has a liquid absorption capacity (demineralized water) of 21/m2 to 3001/m2.

16. The method according to claim 1 , wherein the absorber material comprises an absorber pad.

17. The method according to claim 4 , wherein the liquids to be received by the absorber material comprise cooling liquids, and
wherein the cooling liquids comprise alcohols comprising glycol and/or alcohol/water mixtures comprising glycol/water mixtures.

18. The method according to claim 6 , wherein the seam area is at least 2 to 40 area % based on the total area of the absorber material.

19. The method according to claim 18 , wherein the seam area is at least 4 to 35 area % based on the total area of the absorber material.

20. An actively and/or passively cooled current-carrying system, in particular a power storage system, comprising:
an absorber material, the absorber material comprising a casing and superabsorbent particles arranged therein configured to absorb and distribute liquids in the current-carrying system,
wherein the casing comprises at least two plies arranged in a planar fashion on one another,
wherein regions of the at least two plies are connected to one another such that the casing is segmented in a form of pockets separated from one another by seams,
wherein the seams are configured to transport liquid between the pockets, and
wherein at least some of the pockets have the superabsorbent particles.

Assignees

• Freudenberg Carl Kg

Inventors

• Schneider Ulrich
• Weber Markus
• Senne Sarah

Classifications

• B01J20/2805 Primary

  Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane · CPC title

• B01J20/261 Primary

  obtained by reactions only involving carbon to carbon unsaturated bonds (macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds per se C08F) · CPC title

• F25B17/02

  the absorbent or adsorbent being a liquid, e.g. brine (F25B17/10 takes precedence) · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/6567

  Liquids · CPC title