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Pole core, lithium ion battery, manufacturing method for the pole core and manufacturing method for the lithium ion battery

A technology of lithium-ion battery and manufacturing method, which is applied in the field of electrochemistry, can solve the problems of increased thickness of lithium-ion battery, decreased portability of electronic equipment, and reduced user experience, etc., so as to be beneficial to battery life, not easy to fall off, and light in weight Effect

Inactive Publication Date: 2013-12-04
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, this will inevitably lead to an increase in the thickness and weight of the lithium-ion battery, which will further lead to a decrease in the portability of the electronic device and reduce the user experience.

Method used

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  • Pole core, lithium ion battery, manufacturing method for the pole core and manufacturing method for the lithium ion battery
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  • Pole core, lithium ion battery, manufacturing method for the pole core and manufacturing method for the lithium ion battery

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Embodiment Construction

[0024] Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are assigned to components having substantially the same or similar structures and functions, and repeated descriptions about them will be omitted.

[0025] Below, will refer to figure 1 To describe the pole core of the lithium-ion battery in the prior art.

[0026] figure 1 The structure of a layer of pole core 100 in a lithium-ion battery in the prior art is illustrated.

[0027] As described in the background art section, in the prior art, increasing the capacity of a lithium-ion battery is contradictory to reducing its weight and reducing its thickness.

[0028] For example, take a lithium-ion battery with a capacity of 3700 milliamp hours (mAh) and a thickness of 3.3 millimeters (mm) as an example. Its interior includes battery pole cores that generally have at l...

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Abstract

The invention discloses a pole core of a lithium ion battery, the lithium ion battery, a manufacturing method for the pole core of the lithium ion battery and a manufacturing method for the lithium ion battery. The pole core of the lithium ion battery comprises an anode, a cathode and an isolating membrane. The isolating membrane is disposed between the anode and the cathode and used for isolating the anode and the cathode. The pole core is characterized in that the anode comprises an anode current collector and an anode active material, the anode current collector is provided with holes, the anode active material is filled in the holes of the anode current collector, the cathode comprises a cathode current collector and a cathode active material, the cathode current collector is provided with holes, and the cathode active material is filled in the holes of the cathode current collector. Accordingly, the thickness of a layer of the pole core in the lithium ion battery can be reduced in the case of maintaining the active compound content unchanged in each layer pole core of the battery, thus reducing the thickness of the whole battery in the end.

Description

technical field [0001] The present invention relates to the technical field of electrochemistry, and more specifically, the present invention relates to a pole core of a lithium ion battery, a lithium ion battery, a manufacturing method of a pole core of a lithium ion battery, and a manufacturing method of a lithium ion battery. Background technique [0002] With the development of computer technology and network technology, portable electronic devices such as notebook computers, tablet computers (PAD), mobile phones, multimedia players, and personal digital assistants (PDA) have become more and more popular in recent years. During this process, lithium-ion batteries have gradually become the preferred energy source for these electronic devices due to their advantages of high discharge voltage, high energy density and long cycle life. [0003] As an electrochemical energy storage device, the core component of the lithium-ion battery is the battery core that contains electroc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/80H01M4/13H01M4/139H01M10/0525H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 王丽琴尚可
Owner LENOVO (BEIJING) CO LTD
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