Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

hand warmer

A technology of hand warmers and bus bars, which is applied in the field of hand warmers, can solve the problems of poor safety performance and high power supply voltage, and achieve the effect of rapid heating

Active Publication Date: 2019-02-12
深圳市照见科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hand warmers with heating function generally use metal heating wire as the heating material, which requires a high power supply voltage. The voltage has higher requirements on the power supply or power supply mode

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • hand warmer
  • hand warmer
  • hand warmer

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0110] The preparation method of the above-mentioned heating film 210 is relatively simple, saving time and material cost. At the same time, the electrode layer is prepared by using metal foil, which has good conductivity and is beneficial to control the uniformity of the temperature of the heating film.

[0111] Preferably, the thickness of the first adhesive layer 213 and the second adhesive layer 217 is 25-75 μm.

[0112] see Figure 6 , another embodiment of the hand warmer is roughly the same structure as the hand warmer 1, the difference is that in the illustrated embodiment, the heating film 410 of the hand warmer includes a first insulating layer 412, a conductive layer stacked in sequence 414 , electrode layer 416 , second glue layer 417 and second insulating layer 418 . The second insulating layer 418 is bonded to the electrode layer 416 through the second insulating layer 418 . Preferably, the material of the second adhesive layer 417 is ultraviolet curing adhesiv...

Embodiment 1

[0129] Please also see Figure 4 and Figure 5 , single-layer graphene is used as the conductive layer of the heating film, and the electrode layer is printed with silver paste.

[0130] 1. Transfer a layer of graphene on the PET (first insulating layer) with an area of ​​150mm×150mm and a thickness of 125μm. The graphene has been doped and the square resistance is 250Ω / □;

[0131] 2. Use screen printing equipment to print the silver paste electrode pattern on the transferred graphene, the shape of the pattern is as follows: Figure 4 As shown, the distance between the positive inner electrode and the negative inner electrode is 6mm, the length of the positive inner electrode and the negative inner electrode is 108mm, and the width is 1mm, a total of 15, the width of the positive bus bar and the negative bus bar is 8mm, and the thickness of the silver paste is 25μm;

[0132] 3. Bake the printed electrode layer in an oven to solidify the silver paste. The baking temperature i...

Embodiment 2

[0143] In this embodiment, two layers of graphene are used as the conductive layer of the heating film, and the electrode layer is printed with silver paste.

[0144] 1. Transfer two layers of graphene as the conductive layer on the PET (first insulating layer) with an area of ​​120mm×120mm and a thickness of 125μm. The graphene has been doped and the square resistance is 120Ω / □;

[0145] 2. Use screen printing equipment to print the silver paste electrode layer on the transferred conductive layer, and the pattern shape is as follows: Figure 10 As shown, the outer diameter of the bus bar is 96mm, the inner electrode spacing is 6mm, the width is 1mm, the width of the bus bar is 8mm, and the thickness of the silver paste is 25μm;

[0146] 3. Bake the printed electrode pattern in an oven to solidify the silver paste. The baking temperature is 130°C for 40 minutes.

[0147] In this case, connect the lead wires to the positive and negative poles of the 5V power supply respectivel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a hand warmer. The hand warmer comprises a heating film, an outer cover and a connecting wire. The heating film comprises a first insulating layer, a conducting layer, electrode layers and a second insulating layer. The conducting layer is formed on the surface of the first insulating layer. The electrode layers are formed on the surface of the conducting layer and electrically connected with the conducting layer. The electrode layers comprise positive electrodes and negative electrodes. The positive electrodes comprise positive bus bars and a plurality of positive internal electrodes extending from the positive bus bars. The negative electrodes comprise negative bus bars and a plurality of negative internal electrodes extending from the negative bus bars. The positive internal electrodes and the negative internal electrodes are arranged alternatively in a spaced mode. The second insulating layer is formed on the surface of one electrode layer. The heating film is accommodated in the outer cover. The connecting wire is electrically connected with the electrode layers of the heating film. The chair cushion has a heating function and can be powered up through low voltage.

Description

technical field [0001] The invention relates to a hand warmer. Background technique [0002] With the development of society, people's requirements for quality of life are getting higher and higher. In winter, due to the low temperature, people will feel their hands are very cold, so hand warmers are widely used as a convenient heating tool. However, the existing hand warmers with heating function generally use metal heating wire as the heating material, which requires a high power supply voltage. The voltage has higher requirements on the power supply or power supply mode. Contents of the invention [0003] Based on this, it is necessary to provide a hand warmer with a heating function that can be powered by a lower voltage. [0004] A hand warmer, comprising a heating element, the heating element comprising: [0005] heating film, including [0006] first insulating layer; [0007] a conductive layer formed on the surface of the first insulating layer; [0008] An...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61F7/08
Inventor 冯欣悦冯冠平
Owner 深圳市照见科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com