Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bipolar secondary battery current collector

一种二次电池、双极型的技术，应用在二次电池、二次电池制造、电池电极等方向，能够解决输出功率降低、电池空间不利、电池输出功率密度、能量密度降低等问题，达到抑制电池温度的上升的效果

Active Publication Date: 2012-09-19
NISSAN MOTOR CO LTD
View PDF3 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the battery is connected through the connection part, the resistance of the connection part will reduce the output power
In addition, a battery with a connection is also disadvantageous in terms of space
That is, the connection part may cause a reduction in the output power density and energy density of the battery

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bipolar secondary battery current collector
  • Bipolar secondary battery current collector
  • Bipolar secondary battery current collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] As the conductive resin layer, a film having a thickness of 12.5 μm was prepared in which 5% by mass of Ketjen Black was added to 100% by mass of polyethylene. In addition, as an adhesive having conductivity, an adhesive A in which 20% by mass of carbon particles were added as a conductive material to heat-expandable microcapsules and whose viscosity was adjusted using xylene was prepared. In addition, this heat-expandable microcapsule is formed by encapsulating hexane as an expansion material in a polyvinyl chloride shell (particle diameter: 200 nm, melting point: 125° C.). The above-mentioned adhesive agent A is applied to one side of the above-mentioned resin layer in a thickness of 2 μm, and one layer of the above-mentioned resin layer is laminated on it and bonded to form a resin layer / adhesive layer / resin layer. formed current collectors.

[0105] The positive electrode active material slurry was applied to one surface of the obtained current collector, dried, an...

Embodiment 2

[0107] As the conductive resin layer, a film having a thickness of 25 μm was prepared in which 5% by mass of Ketjen Black was added to 100% by mass of polyethylene. The above-mentioned adhesive A was applied to one side of the above-mentioned resin layer so as to have a thickness of 2 μm, and dried to prepare a current collector composed of a resin layer / adhesive layer.

[0108] The positive electrode active material slurry was applied to the surface of the obtained current collector on the side of the adhesive layer, dried, and then pressed to form a positive electrode active material layer with a thickness of 36 μm. In addition, the above-mentioned negative electrode active material slurry was applied to the surface of the current collector on the resin layer side, dried, and then pressed to form a negative electrode active material layer with a thickness of 30 μm, thereby completing the bipolar electrode ( image 3 (B)).

Embodiment 3

[0110] As the conductive resin layer, a film having a thickness of 25 μm was prepared in which 5% by mass of Ketjen Black was added to 100% by mass of polyethylene. The above-mentioned adhesive A was applied to one side of the above-mentioned resin layer so as to have a thickness of 2 μm, and dried to prepare a current collector composed of a resin layer / adhesive layer.

[0111] The positive electrode active material slurry was applied to the surface of the obtained current collector on the resin layer side, dried, and then pressed to form a positive electrode active material layer with a thickness of 36 μm. In addition, the above-mentioned negative electrode active material slurry was applied to the surface of the current collector on the side of the adhesive layer, dried, and then pressed to form a negative electrode active material layer with a thickness of 30 μm, thereby completing a bipolar electrode. ( image 3 (C)).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The object is to provide a bipolar secondary battery current collector that can suppress an increase of a battery temperature. The bipolar secondary battery current collector according to the present invention is a bipolar secondary battery current collector having electrical conductivity The current collector is characterized in that it has an expansion section that expands in a thickness direction of the current collector at a temperature equal to or higher than a prescribed temperature.

Description

technical field [0001] The present invention relates to a current collector for a bipolar secondary battery. In particular, the present invention relates to improvements for suppressing temperature rise of bipolar secondary batteries. Background technique [0002] In recent years, hybrid electric vehicles (HEV), electric vehicles (EV), and fuel cell vehicles have been manufactured and sold from the viewpoint of the environment and fuel consumption, and new developments are continuing. In these so-called electric vehicles, effective use of a power supply device capable of charging and discharging is indispensable. As the power supply device, secondary batteries such as lithium-ion batteries and nickel-metal hydride batteries, electric double layer capacitors, and the like can be used. In particular, lithium-ion secondary batteries are considered to be suitable for electric vehicles due to their high energy density and high durability against repeated charge and discharge, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/70H01M10/04H01M4/13H01M10/0585
CPCY02E60/12H01M4/60H01M4/667H01M4/66Y02E60/10Y02P70/50H01M4/668H01M10/4235H01M10/0585H01M10/052H01M10/0418
Inventor 本田崇
Owner NISSAN MOTOR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com