Lithium ion energy storage device and its preparation method

A lithium-ion, lithium-ion battery technology, applied in electrical components, electrochemical generators, circuits, etc., can solve the problems of difficult slurry coating, difficulty in forming stable and uniform slurry, and large differences in specific gravity.

Active Publication Date: 2013-03-13
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when preparing electrode slurry, the specific gravity of porous carbon material or conductive polymer and lithium-rich compound (such as lithium cobaltate) is

Method used

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  • Lithium ion energy storage device and its preparation method
  • Lithium ion energy storage device and its preparation method
  • Lithium ion energy storage device and its preparation method

Examples

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preparation example Construction

[0026] The embodiment of the present invention also provides a method for preparing the above-mentioned lithium ion energy storage device. The method has simple procedures, easy control conditions, and high production efficiency by adopting secondary coating. The technological process of the preparation method of the lithium ion energy storage device is as follows: Figure 5 shown, see also Figure 1 to Figure 4 , including the following steps:

[0027] S1: Prepare a number of core-packed monomers 1, and obtain a number of first diaphragms 2 and battery casings; wherein, the core-packed monomer 1 includes a positive electrode sheet 11, two negative electrode sheets 12 and two second diaphragms 13, and the positive electrode sheet 11 is arranged on Between the two negative electrode sheets 12, two second separators 13 are attached between the adjacent positive electrode sheets 11 and negative electrode sheets 12, respectively;

[0028] S2: stacking several core-wrapped monome...

Embodiment 1

[0067] A lithium ion energy storage device, its structure is as follows image 3 , Figure 4 As shown, the lithium ion energy storage device includes a casing (not shown in the figure), a core package placed in the casing, the core package includes two core package monomers 1 and a first diaphragm 2, the first diaphragm 2 is pasted between two core-wrap monomers 1 to form a core-wrap. The core-packed monomer 1 includes a positive electrode sheet 11, two negative electrode sheets 12 and two second separators 13, the positive electrode sheet 11 is arranged between the two negative electrode sheets 12, and the two second separators 13 are attached to adjacent positive electrode sheets respectively. 11 and the negative electrode sheet 12, wherein the positive electrode sheet 11 includes a positive electrode capacitor active material layer 113 with a thickness of 50 μm, a current collector aluminum foil 112 and a lithium ion battery positive electrode material layer 111 with a thi...

Embodiment 2

[0077] A kind of lithium ion energy storage device, its structure is identical with embodiment 1, and its schematic diagram is as image 3 As shown, the difference is that each positive electrode sheet 11 includes a positive electrode capacitor active material layer 113 with a thickness of 20 μm, a current collector aluminum foil 112 and a lithium ion battery positive electrode material layer 111 with a thickness of 10 μm that are sequentially stacked and combined; each negative electrode sheet 11 It includes a negative electrode capacitor active material layer 23 with a thickness of 20 μm, a current collector copper foil 22 and a lithium ion battery negative electrode material layer 21 with a thickness of 10 μm, which are sequentially stacked and combined.

[0078] The preparation method of the lithium ion energy storage device refers to the preparation method of the lithium ion energy storage device in Example 1, the difference is that the active material slurry of the positi...

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Abstract

The invention provides a lithium ion energy storage device, which comprises a shell and a core arranged in the shell. The core comprises several core monomers and first diaphragms. The core monomers are stacked, and the first diaphragms are pasted between two adjacent core monomers. A core monomer comprises a positive plate, two negative plates and two diaphragms. The positive plate is arranged between the two negative plates. The two second diaphragms are pasted between the adjacent positive plate and negative plates. The positive plate comprises a positive capacitor active material layer, a positive current collector substrate and a lithium ion battery positive material layer that are overlapped and combined in order. The negative plate includes a negative capacitor active material layer, a negative current collector substrate and a lithium ion battery negative material layer that are overlapped and combined in order. The energy storage device provided in the invention has the characteristics of high power density, long service life, as well as simple and stable structure. The preparation method of the lithium ion energy storage device has the advantages of simple procedure, easily controllable conditions, and high production efficiency.

Description

technical field [0001] The invention relates to a lithium ion energy storage device and a preparation method thereof Background technique [0002] Power supply is an indispensable part of all kinds of circuits. In the absence of mains power, only by storing electric energy can the circuit be used. Therefore, various energy storage devices are an important part of the mobile power system, and their performance is directly related to the service life and power characteristics of mobile appliances. and other important indicators. [0003] At present, energy storage devices include primary batteries, secondary batteries, and supercapacitors. The primary battery is not rechargeable and cannot be used repeatedly, and the comprehensive use cost is high. The primary battery can be repeatedly charged and discharged, and is the preferred energy storage device for many mobile appliances. At present, the common secondary batteries include: lead-acid batteries, nickel batteries, nicke...

Claims

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Application Information

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IPC IPC(8): H01M16/00
Inventor 周明杰俞兆喆王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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