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Manufacturing method for secondary battery electrode and electrode manufacturing device

A manufacturing method and electrode manufacturing technology, which is applied in the direction of secondary battery manufacturing, electrode manufacturing, battery electrodes, etc., can solve the problem of low degree of freedom in design, and achieve the effect of high productivity and high quality

Inactive Publication Date: 2014-05-07
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the degree of freedom in designing the range of film thickness of the coating film, the solvent contained in the composition to be coated, etc. has not always been high

Method used

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  • Manufacturing method for secondary battery electrode and electrode manufacturing device
  • Manufacturing method for secondary battery electrode and electrode manufacturing device
  • Manufacturing method for secondary battery electrode and electrode manufacturing device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] figure 1 is a schematic diagram of an example of the electrode manufacturing apparatus 1 for a secondary battery according to the first embodiment of the present invention. This electrode manufacturing apparatus 1 for a secondary battery has a drying section 20, a coating section 30, a conveying section 40, and the like. The electrode manufacturing apparatus 1 for a secondary battery is capable of conveying an electrode current collector 10 as a base material, forming a coating film 11 through a coating section 30 , and drying the formed coating film 11 .

[0025] The drying section 20 is a device for drying the coating film 11 on the electrode current collector 10 , and is equipped with a blowing section that blows hot air in a direction parallel to the coating film surface of the electrode current collector 10 . The blowing unit may at least have a region for blowing hot air in a direction parallel to the coating film surface of the electrode current collector 10 . ...

no. 2 example

[0061] Next, an example of an electrode manufacturing apparatus different from the above-described first embodiment of the present invention will be described. Figure 5 is a schematic diagram showing an example of the electrode manufacturing apparatus 2 according to the second embodiment of the present invention. The basic configuration and operation of the electrode manufacturing apparatus 2 according to the second embodiment of the present invention are the same as those of the above-described first embodiment of the present invention except for the following points. That is, the drying section 20 according to the second embodiment of the present invention is different from the first embodiment of the present invention provided with a single drying furnace in that there are two drying furnaces.

[0062] The drying section 20 according to the second embodiment of the present invention has drying furnaces Z1 and Z2. By providing the drying ovens Z1 and Z2, the degree of free...

no. 3 example

[0066] Image 6 is a schematic diagram showing an example of the electrode manufacturing apparatus 3 according to the third embodiment of the present invention. The basic configuration and operation of the electrode manufacturing apparatus 3 according to the third embodiment of the present invention are the same as those of the above-described first embodiment of the present invention except for the following points. That is, the drying section 20 according to the third embodiment of the present invention is different from the first embodiment of the present invention provided with a single drying furnace in that there are three drying furnaces. In addition, the drying section according to the third embodiment of the present invention is different from the first embodiment of the present invention in which hot air is not directly blown to the coating film 11 in that the hot air is in the middle one of the three drying furnaces (i.e. , drying oven Z2) blow in parallel directio...

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Abstract

A manufacturing method for a secondary battery electrode, includes conveying an electrode current collector; applying an active material layer-forming composition that is prepared in a slurry state onto the electrode current collector; and drying a coating film that is made of the active material layer-forming composition formed on the electrode current collector. The coating film is dried by blowing a first hot air in a direction parallel to a coating film surface of the electrode current collector.

Description

technical field [0001] The invention relates to a manufacturing method for secondary battery electrodes. Furthermore, the present invention relates to an electrode manufacturing apparatus suitable for the aforementioned manufacturing method for secondary battery electrodes. Background technique [0002] Expectations have been expressed for secondary batteries such as lithium-ion batteries, nickel-metal hydride batteries, and the like as a driving source for electric vehicles or hybrid vehicles, or as a power source for personal computers or mobile terminals. In particular, a lithium secondary battery that is light in weight and provides high energy density has been expected as a vehicle-mounted high-output power source. In a typical configuration, a lithium secondary battery is equipped with an electrode configured such that a material (electrode active material) capable of reversibly absorbing and releasing lithium ions is held by a conductive member (electrode collector)....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/139H01M4/04
CPCH01M4/0404H01M4/139H01M4/32H01M10/0404H01M10/0525H01M10/345Y02E60/10
Inventor 藤田正人
Owner TOYOTA JIDOSHA KK