Unlock instant, AI-driven research and patent intelligence for your innovation.

Larger power supply unit

A power supply device, a large-scale technology, applied in the direction of exhaust plug device, battery/fuel cell control device, circuit, etc., can solve the problems of bad influence of residents, influence of surrounding equipment, gas flow into the room, etc., and achieve cost reduction and realization Safety, effect of increasing volume efficiency

Inactive Publication Date: 2008-01-02
PANASONIC CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the generated gas is discharged directly without control, it may have an impact on the surrounding equipment, the gas will flow into the room, and have a bad impact on the residents living around the house, etc.

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
  • Larger power supply unit
  • Larger power supply unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] will be given by the composition formula LiNi 0.7 co 0.2 Al 0.1 o 2 A representative lithium-nickel composite oxide is used as a positive electrode active material. Add cobalt sulfate and aluminum sulfate in a predetermined ratio and dissolve in NiSO 4 in the aqueous solution. To this aqueous solution, an aqueous sodium hydroxide solution was slowly added dropwise under stirring for neutralization, thereby producing a precipitate of nickel hydroxide containing Co and Al, Ni 0.7 co 0.2 Al 0.1 (OH) 2 . The precipitate was filtered, washed with water, and dried at 80°C. The average particle size of nickel hydroxide thus obtained was 10 μm.

[0054] The above nickel hydroxide was heat-treated at 900°C for 10 hours in atmospheric air to obtain nickel oxide Ni 0.7 co 0.2 Al 0.1 O. The obtained oxide was confirmed to be single-phase nickel oxide by powder X-ray diffraction.

[0055] Subsequently, lithium hydroxide monohydrate was added to the above nickel oxide ...

Embodiment 2

[0064] Prepare a battery pack in the same manner as in Example 1, except that the thickness of the porous heat-resistant layer formed on both sides of the negative electrode sheet is set to 5 μm, and a 20 μm thick polyethylene-polypropylene composite film (2300, Celgard Inc. The product (blocking temperature: 120°C)) is inserted between the positive electrode sheet and the negative electrode sheet as an interrupting layer.

Embodiment 3

[0066] A battery pack was prepared in the same manner as in Example 1 except that a 25 μm thick porous heat-resistant layer was provided on both sides of the positive electrode sheet instead of on both sides of the negative electrode sheet.

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
heat deflection temperatureaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

A large-sized power supply device has a positive electrode, a negative electrode, a porous heat resistant layer placed between the positive electrode and the negative electrode, a sealed battery case for containing nonaqueous electrolyte, lithium ion secondary batteries provided in the battery case and including a safety valve operating at a predetermined pressure, and a battery jar for containing the lithium ion secondary batteries. The large-sized power supply device exhibits excellent safety and produces almost no gas, so that a dedicated gas discharge hose is not required. Consequently, the large-sized power supply device has very high volumetric efficiency.

Description

technical field [0001] The present invention relates to a large-scale power supply unit including a plurality of lithium-ion secondary batteries connected in series. More particularly, the present invention relates to large-scale power supply units for mobile use, such as in hybrid vehicles, electric vehicles or electric motorcycles, or to stationary large-scale power supply units, such as household power or backup power. Background technique [0002] Lithium-ion secondary batteries generally have high energy density and enable devices to be reduced in size and weight. Therefore, they are being developed in various fields. Lithium-ion secondary batteries are expected especially in the field of large-scale power supply units for mobile use and in the field of stationary large-scale power supply units. [0003] As for the field of large power supply units for mobile use, mention may be made of powerful and moderate hybrid motor vehicles with internal combustion engines and ...

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): H01M10/40H01M2/10H01M2/16H01M10/50H01M10/0525H01M10/36H01M50/209H01M50/227
CPCY02E60/122H01M2/1083H01M2/1673H01M10/5004Y02T10/7011H01M10/5016H01M10/613H01M2/12H01M10/0525B60L11/1879Y02T10/705H01M10/625H01M10/5067H01M10/6563B60L11/1874Y02T10/7005B60L58/26B60L50/64Y02E60/10Y02T10/70H01M50/30H01M50/46H01M50/227H01M50/209
Inventor 田中纪子藤田秀明
Owner PANASONIC CORP