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Use of composite materials for absorbing and distributing liquids in actively and/or passively cooled current-carrying systems

A composite material, passive cooling technology, applied in separation methods, electric vehicles, gas treatment, etc., can solve the problems of gel blocking, low absorption capacity, low thermal stability, etc.

Pending Publication Date: 2022-05-13
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The disadvantage of using absorbent fibers is that their absorbent capacity is usually lower than comparable absorbent granules
In addition, it usually has low thermal stability in dry and swollen state
Also, as mentioned above, the use of absorbent fibers can lead to a gel-blocking effect

Method used

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  • Use of composite materials for absorbing and distributing liquids in actively and/or passively cooled current-carrying systems
  • Use of composite materials for absorbing and distributing liquids in actively and/or passively cooled current-carrying systems
  • Use of composite materials for absorbing and distributing liquids in actively and/or passively cooled current-carrying systems

Examples

Experimental program
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Effect test

example 1

[0073] Example 1: Preparation of a composite material that can be used according to the invention

[0074] Different composite materials and absorbent pads were prepared that could be used in accordance with the present invention.

[0075] The following materials were used:

[0076] Microfiber Spunbond Nonwoven: Microfiber Spunbond Nonwoven Polyamide / Polyester 200g / m 2 .

[0077] Superabsorbent particles 1: Partially neutralized and cross-linked polyacrylic acid, prepared by substance polymerization, particle size distribution d50 of 50 μm-1000 μm, coating weight 15 g / m 2 .

[0078] Superabsorbent Particles 2: Partially neutralized and cross-linked polyacrylic acid, prepared by reverse phase suspension polymerization, particle size distribution d50 is 50 μm-1000 μm, coating weight 15 g / m 2 .

[0079] Water-soluble distribution layer 1: water-soluble partially saponified polyvinyl alcohol, coating weight 20g / m 2

[0080] Water-soluble distribution layer 2: water-solubl...

example 2

[0092] Example 2: Testing the absorbent capacity of absorbent pads according to the invention

[0093] The absorbent capacity of the absorbent pad 7 was tested according to DIN 53923 with completely desalinated water. Absorbent Pad 7 was found to have a good water absorption of 8.7 kg / m 2 . In the test range according to DIN 53923, the absorbent pad 7 is suspended freely floating in the swollen state for 30 seconds. The water loss here is 550g / m 2 , so the retention is very good. The absorbent pad also dries easily without heating, suggesting that it is also capable of reversibly binding water. By being welded circumferentially swelling can be well controlled and blocking effects can be avoided by using a distribution layer. Dust formation can be avoided by immobilizing the superabsorbent particles.

example 3

[0094] Example 3: Testing the Water Vapor Absorption of Absorbent Pads According to the Invention

[0095] Absorbent Pad 7 was tested for water vapor absorption. For this purpose, the absorbent pads are stored in a climate chamber at 90% humidity and 30° C. for a period of 270 minutes. Weight gain was measured gravimetrically every 30 minutes over a period of 270 minutes. The absorbent pad 7 was then dried at room temperature and the weight loss was determined gravimetrically. This process is repeated 5 times and at figure 1 shown in .

[0096] The results show that water vapor absorption is very rapid. After 30 minutes the water vapor absorption has reached equilibrium. To this end, it is worth noting that re-drying also proceeds very quickly and is almost complete.

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Abstract

Use of a composite material for receiving and distributing liquids in an actively and / or passively cooled current-carrying system, in particular in an actively and / or passively cooled electrical storage system, comprising a carrier layer and a liquid-receiving layer fixed to the carrier layer, the liquid-receiving layer comprising fixed superabsorbent particles, the superabsorbent particles comprising at least one superabsorbent polymer, the superabsorbent polymer comprising at least one superabsorbent polymer, the superabsorbent polymer comprising at least one superabsorbent polymer, and the superabsorbent polymer comprising at least one superabsorbent polymer. On the side of the liquid receiving layer facing away from the carrier layer, a liquid distribution layer is arranged in liquid-conducting contact with the liquid receiving layer, which liquid distribution layer receives and distributes the liquid to be received in the plane of the composite material.

Description

technical field [0001] The present invention relates to the use of a composite material for absorbing and distributing liquids in actively and / or passively cooled current carrying systems, in particular actively and / or passively cooled electrical storage systems. The invention also relates to absorbent pads and actively and / or passively cooled current carrying systems comprising the composite material. Background technique [0002] Current-carrying systems, especially battery systems, are becoming more and more important as they are necessary to drive electric and hybrid vehicles. As we all know, a "current-carrying system" is a system through which electric current flows. The actually relevant current-carrying system is the "storage system", that is, a system for storing energy that is currently available but not needed for later use. This storage is often accompanied by a conversion of energy form, for example from electrical to chemical energy. The energy is then conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/26H01M10/60H01M50/24
CPCB01D53/263H01M50/24H01M10/60B01D2257/80H01M4/62H01M50/572Y02E60/10H01M10/613H01M10/655H01M10/6567
Inventor 乌尔里奇·施耐德S·森纳P·克里泽
Owner CARL FREUDENBERG KG
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