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A fast-charge lithium-ion secondary battery

A secondary battery, lithium ion technology, applied in secondary batteries, battery electrodes, circuits, etc., to achieve the effect of ensuring safety performance

Active Publication Date: 2019-02-15
杭州蔚斯博系统科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual charging process, when charging for 12 minutes, the charging flow can only reach about 60% of the full capacity, which cannot fully meet the needs of customers.

Method used

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  • A fast-charge lithium-ion secondary battery
  • A fast-charge lithium-ion secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this example, a lithium ion secondary battery is provided.

[0020] The positive electrode system is composed of the following components by mass fraction: 30% lithium manganate, 25% nickel-cobalt lithium manganate, 30% nickel-cobalt lithium aluminate, 10% lithium titanate, and 5% lithium-containing oxide of M. The lithium-containing oxides of M include 2% lithium-containing oxides of potassium and 3% lithium-containing oxides of vanadium.

[0021] The negative electrode system is composed of the following components by mass fraction: 35% bamboo charcoal powder, 25% polysilicon, 25% germanium material, and 15% gallium compound. 10%.

[0022] In the lithium ion battery in this example, the electrolyte of the electrolyte is a mixture of lithium hexafluorophosphate and lithium tetrafluoroborate; 2,4-dinitroaniline and fluoroethylene carbonate are added to the additives.

[0023] Of course, the additives in the electrolyte solution of the lithium battery can be at leas...

Embodiment 2

[0026] Compared with Example 1, the lithium-ion battery in this example is different in that the positive electrode system of the lithium-ion battery in this example is composed of the following components in mass fraction: 25% lithium manganate, nickel-cobalt 30% lithium manganate, 20% lithium nickel cobalt aluminate, 12% lithium titanate, 10% lithium-containing oxides of M, and 3% gallium oxides, among which lithium-containing oxides of M include lithium-containing oxides of cesium2 %, praseodymium lithium-containing oxide 2%, rubidium lithium-containing oxide 6%; gallium compounds include gallium arsenide 1%, gallium telluride 2%.

Embodiment 3

[0028] Compared with Example 1, the lithium-ion battery in this example is different in that the positive electrode system of the lithium-ion battery in this example is composed of the following components in mass fraction: lithium manganate 35%, nickel-cobalt-manganese 15% lithium oxide, 25% lithium nickel cobalt aluminate, 15% lithium titanate, 6% lithium-containing oxides of M, and 4% gallium oxides, among which, lithium-containing oxides of M include 1% lithium-containing oxides of potassium , 2% lithium-containing oxide of tungsten, 1% lithium-containing oxide of erbium, 1% lithium-containing oxide of rubidium, 1% lithium-containing oxide of europium; gallium compounds include gallium telluride 1%, gallium antimonide 2 %, gallium selenide 1%.

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Abstract

The invention discloses a rapidly-charged lithium ion secondary battery. The battery comprises a positive electrode system and a negative electrode system, wherein the negative electrodes system comprises the following components based on mass percentages: 30-40% of bamboo charcoal powder, 15-35% of polysilicon, 10-30% of germanium material, and 5-20% of gallide, wherein the gallide is selected from at least one kind of gallium nitride, gallium antimonide and gallium selenide. The lithium ion secondary battery disclosed by the invention has relatively high rapid charging performance, and the charging temperature rise is low and is not greater than 12 DEG C in the whole charging process; and the battery is high in safety performance and does not cause the phenomena of high temperature and explosion even if the battery is punctured and short circuited.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a fast-charging lithium-ion secondary battery. Background technique [0002] As a clean and environmentally friendly functional component, lithium-ion batteries have been widely used in more and more fields. For example, in the field of consumer electronics, electric vehicles, energy storage systems, and the recently emerging field of self-balancing vehicles. [0003] Among them, consumer electronic products commonly used by people, such as digital products such as mobile phones and laptop computers, have increased power consumption with the upgrading of their smart terminals. Generally, it takes about 2 to 4 hours for a smart mobile device to be fully charged. Bring a lot of inconvenience, therefore, how to shorten the charging time of lithium battery becomes the problem to be solved urgently that lithium battery is widely used. In the prior art, in order to solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M4/62
CPCH01M4/625H01M10/0525Y02E60/10
Inventor 宋以仁敖晓凭
Owner 杭州蔚斯博系统科技有限公司
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