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Non-aqueous electrolyte secondary cell, manufacturing method thereof, and mounting method thereof

A non-aqueous electrolyte and secondary battery technology, applied in the direction of non-aqueous electrolyte storage battery, electrolyte storage battery manufacturing, secondary battery, etc., can solve the problems of time-consuming processing, difficulty, difficult to use manufacturing process, etc.

Inactive Publication Date: 2008-07-02
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] On the other hand, although a method of completely discharging a lithium secondary battery to 0V has been thought of as a corresponding method for the battery, it is extremely difficult to bring the voltage to about 0V , and consumes processing time, so the aforementioned method is not easy to apply to the manufacturing process
Moreover, this battery is not a battery whose characteristics do not deteriorate even when an external short circuit occurs, so it is difficult to make the battery manufacturing process simpler and more efficient

Method used

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  • Non-aqueous electrolyte secondary cell, manufacturing method thereof, and mounting method thereof
  • Non-aqueous electrolyte secondary cell, manufacturing method thereof, and mounting method thereof
  • Non-aqueous electrolyte secondary cell, manufacturing method thereof, and mounting method thereof

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Embodiment

[0044] Hereinafter, preferred embodiments of the present invention will be described. First, display the figure 1 Ni / SUS304 / A1 aluminum alloy plate was used for the positive electrode can 1 in the coin-type battery, and SUS316 was used for the negative electrode can 2, and the results of various active materials were studied. Hereinafter, the procedure for producing the battery A will be described first.

[0045] Mix LiNO at a molar ratio of 1:3 3 with MnO 2 , after pre-sintering at 260°C for 5 hours, and then sintering at 340°C for 5 hours to prepare lithiated lanthanum manganese oxide. Then, the aforementioned oxide was mixed with carbon black as a conductive agent and PTFE as a binder to prepare an electrode mixture. In addition, the mixing ratio was a ratio of 88:5:7 by weight. The aforementioned electrode mixture was mixed at 2 ton / cm 2 After forming into pellets with a diameter of 10 mm under pressure, they were dried in the air at 250° C. to prepare positive elect...

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Abstract

The nonaqueous electrolyte secondary battery of the present invention includes a positive electrode, a negative electrode, and a nonaqueous electrolyte located between the positive electrode and the negative electrode. The positive electrode contains an active material capable of reversibly intercalating and deintercalating lithium, and the negative electrode contains an active material having the same composition as that of the positive electrode. In addition, the non-aqueous electrolyte secondary battery starts to generate voltage after charging. In addition, during reflow mounting, if it is charged after mounting, it will not cause adverse effects on the substrate parts.

Description

technical field [0001] The present invention relates to a non-aqueous electrolyte secondary battery which has high resistance to external short circuit or reverse charging and is easy to install on a substrate. Background technique [0002] Lithium secondary batteries are mostly used as the main power supply or backup power supply of portable devices. For example, in backup lithium secondary batteries, lithium aluminum alloy is used as the active material of the negative electrode, and vanadium pentoxide, lithium-containing manganese oxide or niobium pentoxide is used as the active material of the positive electrode. In addition, for example, lithium ion secondary batteries mainly used for power sources use graphite or spinel-type lithium titanate for the negative electrode and lithium cobaltate for the positive electrode. Lithium secondary batteries for backup use show a voltage of about 3V when forming the battery, while lithium ion secondary batteries for main power supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/40H01M2/02H01M4/02H01M4/58H01M4/131H01M4/50H01M4/505H01M4/52H01M4/525H01M10/0525H01M10/36
CPCH01M4/131H01M4/505Y02E60/122H01M10/0525H01M4/525Y10T29/49108Y02E60/10H01M10/052H01M10/058
Inventor 高桥忠义
Owner PANASONIC CORP
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