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

Design method of lithium ion battery structure

A technology of lithium ion battery and design method, applied in secondary battery, non-aqueous electrolyte battery, electrolyte battery manufacturing and other directions, can solve problems such as low energy density and safety, achieve easy mass industrial production, weaken internal short circuit hidden danger, The effect of solving security problems

Inactive Publication Date: 2019-04-26
SHANGHAI NAT ENG RES CENT FORNANOTECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, there are many disadvantages in the structural design of the existing lithium-ion batteries, such as relatively low energy density and safety issues, so the structural design of new lithium-ion batteries is particularly important for the development of lithium-ion batteries

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
  • Design method of lithium ion battery structure
  • Design method of lithium ion battery structure
  • Design method of lithium ion battery structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the schematic diagram of the cell obtained in this example uses a cellulose separator as a thin film separating the positive and negative materials, coats the positive and negative materials in a cross shape on the separator, and uses the electrolyte as the medium for lithium ion transmission.

[0033] A "planar" structure design method of a diaphragm / electrolyte / positive electrode / negative electrode of the present invention, according to the following steps:

[0034] (1) The nickel-cobalt-manganese ternary cathode material is figure 1 The shape shown is coated on both sides of the cellulose diaphragm, and dried at 80°C for 12 hours to solidify;

[0035] (2) The graphite anode material is figure 1 The shape shown is coated on both sides of the cellulose diaphragm, and dried at 100°C for 12 hours to solidify;

[0036] (3) The above materials are immersed in the electrolyte and packaged.

Embodiment 2

[0038] A "planar" structure design method of a solid electrolyte / positive electrode / negative electrode of the present invention, such as figure 2 It is a schematic diagram of the front view of the battery cell obtained in this embodiment, relying on the solid electrolyte as the separator separating the positive and negative electrode materials and the medium for lithium ion transmission; image 3 The schematic side view of the cell obtained in this example relies on the solid electrolyte as the separator separating the positive and negative electrode materials and the medium for lithium ion transmission.

[0039] Specifically follow the steps below:

[0040] (1) The nickel-cobalt-manganese ternary cathode material is figure 2 , image 3 The shape shown is filled into the empty tank of polyoxyethylene (PEO)-based electrolyte, and dried at 80°C for 12 hours to cure;

[0041] (2) The graphite anode material is figure 2 , image 3 The shape shown is filled into the polyoxy...

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 provides a novel lithium ion battery structure design method. A lithium ion battery structure is designed as that a positive electrode material and a negative electrode material are applied to the same side of a film, or the positive electrode material and the negative electrode material are embedded into a solid electrolyte material. The structure design method has the advantages that migration movement of lithium ions occur laterally in the film or solid electrolyte, thereby weakening the internal short-circuit hidden danger caused by film breakage or solid electrolyte breakdown, and improving the safety of the lithium ion battery in use. The method is novel in design and easy to produce in an industrialized way and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of structural design, and in particular relates to a lithium-ion battery structural design method, which is applied in the field of lithium-ion batteries. technical background [0002] Lithium-ion batteries have the advantages of high energy density, large output power, high voltage, small self-discharge, wide operating temperature range, no memory effect, and environmental friendliness. They have been widely used in electronic equipment, electric vehicles, rail transit, and large-scale energy storage. and aerospace fields. The structure of lithium-ion batteries is mainly divided into two types: "laminated structure" and "winding structure" according to the different assembly methods of the pole pieces, corresponding to the two processes of "lamination" and "winding". [0003] The stacking process is a manufacturing process in which the positive and negative electrodes are cut into small pieces and the diaphragm is s...

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 Applications(China)
IPC IPC(8): H01M10/058H01M10/0525
CPCH01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 何丹农解启飞张芳张道明王亚坤王惠亚赵立敏卢玉英吴晓燕邓秉浩金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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