Single large-capacity polymer lithium-ion battery manufacturing method and assembling method thereof

A lithium-ion battery and polymer technology, applied in secondary battery manufacturing, battery pack components, secondary batteries, etc., can solve the problem that the diaphragm is not easy to flatten, and achieve the effect of realizing large capacity and ensuring quality

Active Publication Date: 2016-08-17
程建聪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present application provides a method for manufacturing a single high-capacity polymer lithium-ion battery and its

Method used

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  • Single large-capacity polymer lithium-ion battery manufacturing method and assembling method thereof
  • Single large-capacity polymer lithium-ion battery manufacturing method and assembling method thereof
  • Single large-capacity polymer lithium-ion battery manufacturing method and assembling method thereof

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Experimental program
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Embodiment 1

[0037] Please refer to figure 2 , the present embodiment provides a method for manufacturing a monomer high-capacity polymer lithium-ion battery, comprising the following steps:

[0038] S1: a positive electrode sheet manufacturing step, used to prepare the positive electrode sheet.

[0039] S2: a negative electrode sheet manufacturing step, for preparing the negative electrode sheet.

[0040] S3: The diaphragm membrane manufacturing step, which is used to coat the prepared diaphragm slurry on the polyester film to prepare the diaphragm membrane.

[0041] S4: Assembly step.

[0042] Please refer to image 3 , the assembly step (S4) includes the following sub-steps:

[0043] S1.1: Lay the diaphragm membranes on the surface of the positive electrode sheet respectively.

[0044] S1.2: Press the diaphragm and the positive electrode together by hot pressing. In this embodiment, a temperature of 100-140° C. and a pressure of 1-20T (for example, 10T) can be used to press the d...

Embodiment 2

[0053] Please refer to Figure 4, The present embodiment also provides a method for manufacturing a positive electrode sheet of a monomer large-capacity polymer lithium-ion battery (ie, the positive electrode sheet manufacturing step S1 in the first embodiment above), which includes the following steps:

[0054] Step 2.1: preparing a current collector and a current collector treatment slurry, the current collector treatment slurry at least includes a conductive agent. Usually, aluminum foil is used as the positive electrode current collector.

[0055] Step 2.2: Coating the current collector treatment slurry on the surface of the current collector.

[0056] Step 2.3: preparing positive electrode slurry, the positive electrode slurry at least includes positive electrode active material, conductive agent and positive electrode polymer. Among them, lithium cobalt oxide, lithium iron phosphate, lithium nickel cobalt manganate, lithium nickel cobalt aluminate, lithium manganate, l...

Embodiment 3

[0075] Please refer to Figure 7 , The present embodiment also provides a method for manufacturing a negative electrode sheet of a monomer large-capacity polymer lithium-ion battery (ie, the negative electrode sheet manufacturing step S2 in the first embodiment above), which includes the following steps:

[0076] Step 3.1: preparing a current collector and a current collector treatment slurry, the current collector treatment slurry at least includes a conductive agent. Usually, copper foil is used as the negative electrode current collector.

[0077] Step 3.2: Coating the current collector treatment slurry on the surface of the current collector.

[0078] Step 3.3: preparing negative electrode slurry, the negative electrode slurry at least includes negative electrode active material, conductive agent and negative electrode polymer. Among them, the negative electrode active material can be carbon materials such as artificial graphite, natural graphite, hard carbon, mesocarbon...

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Abstract

The invention provides a single large-capacity polymer lithium-ion battery manufacturing method and an assembling method thereof. Firstly, polyester films are coated with prepared membrane slurry to prepare membranes; the membranes are respectively adhered to the surface of a cathode plate and then are pressed with the cathode plate together in a hot pressed mode, and the polyester films on the membranes are torn off after cooling; then, the cathode plate pressed with the membranes are superposed and bonded with an anode plate together to obtain a battery cell. The problem of uneven superposition caused by too thin membranes is solved by using the polyester films as intermediate substances in the assembling mode, the quality of a battery can be well ensured, and therefore the single large-capacity battery can be achieved.

Description

technical field [0001] The present application relates to the technical field of lithium-ion battery manufacturing, and in particular to a method for manufacturing a single high-capacity polymer lithium-ion battery and an assembly method thereof. Background technique [0002] With the development of the new energy automobile industry, more and more attention is paid to the endurance of automobiles. How to improve the endurance of automobiles is also a technical difficulty that needs to be tackled in the industry. In order to improve the battery life of the car, it is mainly necessary to increase the capacity of the battery. Therefore, the application of large-capacity batteries is born. Moreover, large-capacity batteries can be applied not only to the automotive industry, but also to energy storage, electric power and other fields. [0003] Please refer to figure 1 , is a schematic diagram of the structure of a single cell in a lithium-ion battery. [0004] The battery ce...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M10/0585H01M10/0525H01M2/14H01M50/403H01M50/414H01M50/449H01M50/489
CPCH01M10/0468H01M10/0525H01M10/0585H01M50/403Y02E60/10Y02P70/50
Inventor 程建聪
Owner 程建聪
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