Patent application number | Description | Published |
20080197813 | METHOD FOR QUICK-CHARGING NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY AND ELECTRIC EQUIPMENT USING THE SAME - A non-aqueous electrolytic secondary battery which includes a heat-resistant layer formed by a porous protective film or the like having a resin binder and an inorganic oxide filler between its negative electrode and a positive electrode has such a characteristic that the higher the battery's temperature becomes, the smaller its internal resistance value becomes. In a CC-CV charging method as a general method for charging a secondary battery, using such a characteristic that the internal resistance value of the non-aqueous electrolytic secondary battery lowers as the battery's temperature rises, a VC-charge range where a charge is given using an optimum charging-current value at a maximum level up to which the battery's temperature does not reach an excessive temperature even if a charging current flows is provided within a CC-charge range. | 08-21-2008 |
20080241684 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous insulating layer and a nonaqueous electrolyte. The porous insulating layer is provided between the positive electrode material mixture layer and the negative electrode material mixture layer and contains a material which does not have a shutdown function. The positive electrode is provided with a PTC layer extending substantially parallel to the positive electrode collector and the negative electrode is provided with a PTC layer extending substantially parallel to the negative electrode collector. Each of the PTC layers contains a material having a positive temperature coefficient of resistance. | 10-02-2008 |
20080254355 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous insulating layer and a nonaqueous electrolyte. The porous insulating layer is provided between the positive electrode and the negative electrode and contains a material which does not have a shutdown function. Each of the positive electrode and the negative electrode includes an expandable element. | 10-16-2008 |
20080285193 | POWER SUPPLY APPARATUS - A power supply apparatus includes: a plurality of batteries; a changeover portion switching the connection between the plurality of batteries; a short-circuit battery detection portion, if an internal short-circuit is produced in any of the plurality of batteries, detecting this internal short-circuit battery; and a changeover control portion, if the short-circuit battery detection portion detects the internal short-circuit battery, allowing the changeover portion to switch the connection between the plurality of batteries in such a way that this internal short-circuit battery and at least one of the other batteries are connected in series to thereby form a closed circuit. | 11-20-2008 |
20080299457 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery including a positive electrode including a positive electrode current collector carrying a positive electrode material mixture layer thereon, a negative electrode including a negative electrode current collector carrying a negative electrode material mixture layer thereon, a separator provided between the positive electrode and the negative electrode and a nonaqueous electrolyte solution, wherein the positive electrode current collector is a conductive body containing aluminum and the positive electrode material mixture layer includes a first material mixture layer and a second material mixture layer formed on the first material mixture layer. The first material mixture layer is made of a first material mixture containing a first organic material which is soluble or dispersible in water and the second material mixture layer is made of a second material mixture containing a second organic material which is soluble or dispersible in an organic solvent. | 12-04-2008 |
20090104529 | ELECTRODE FOR LITHIUM ION SECONDARY BATTERY - An object of the present invention is to provide an electrode for a lithium ion secondary battery that can ensure a high level of safety even when exposed to severe conditions such as a nail penetration test or crush test, and exhibit excellent output characteristics. | 04-23-2009 |
20090169986 | NON-AQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - In a non-aqueous secondary battery that includes a strip-shaped positive electrode, a strip-shaped negative electrode, a first insulating layer interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, the width of the positive electrode is smaller than the width of the negative electrode, both longitudinal end faces of the positive electrode are coated with a second insulating layer, and the first insulating layer and the second insulating layer are both porous. | 07-02-2009 |
20090208820 | ELECTROCHEMICAL ELEMENT - To operate a safety mechanism normally even when an accident happens. For this object, an electrochemical element includes an exhaust valve that operates when an internal pressure in a casing | 08-20-2009 |
20090286148 | METHOD FOR EVALUATING INTERNAL SHORT-CIRCUIT OF BATTERY, DEVICE FOR EVALUATING INTERNAL SHORT-CIRCUIT OF BATTERY, BATTERY, BATTERY PACK AND THEIR MANUFACTURING METHODS - Methods for evaluating battery safety under internal short-circuit conditions are improved to eliminate variations in evaluation results and accurately evaluate battery safety under internal short-circuit conditions. An internal short-circuit is caused in a battery by using an internal short-circuit causing method in which battery information obtained upon the occurrence of an internal short-circuit hardly changes with the structure of the battery. At this time, the battery information is detected to accurately evaluate the safety of the battery upon the internal short-circuit and identify the safety level. | 11-19-2009 |
20090286152 | ELECTRICITY STORAGE DEVICE - In an electricity storage device buried with a storage battery accommodated in a housing, it is aimed to prevent a positive electrode terminal and a negative electrode terminal from being corroded even upon condensation in the housing. | 11-19-2009 |
20090311585 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes: a positive electrode | 12-17-2009 |
20100047673 | BATTERY PACK AND BATTERY-MOUNTED DEVICE - A battery pack includes a battery having a risk of releasing a gas under abnormal conditions, a case that accommodates the battery, and an oxygen reducing portion that reduces an amount of oxygen within the case. | 02-25-2010 |
20100104928 | BATTERY PACK, BATTERY-MOUNTED DEVICE AND CONNECTION STRUCTURE FOR BATTERY PACK - It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct | 04-29-2010 |
20100119932 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the present invention is to provide a high-energy density nonaqueous electrolyte secondary battery that controls the rise in temperature during short circuiting. Used is a nonaqueous electrolyte secondary battery | 05-13-2010 |
20100136429 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode ( | 06-03-2010 |
20100156356 | METHOD OF QUICK CHARGING LITHIUM-BASED SECONDARY BATTERY AND ELECTRONIC DEVICE USING SAME - A charging current is maintained at a predetermined constant quick charging current (S | 06-24-2010 |
20100183910 | BATTERY PACK AND BATTERY-MOUNTED DEVICE - A battery pack is provided in which battery characteristics are not degraded in normal use and, even if a cell reaches a high temperature and a high-temperature gas is released from the inside of the cell, the spread of combustion to the entire pack can be suppressed to reduce damage. The battery pack is provided with cells, a housing for accommodating the cells and a thermal expansion section capable of reducing internal clearances between the cells and the housing upon the application of heat. | 07-22-2010 |
20100188048 | NONAQUEOUS SECONDARY BATTERY, BATTERY PACK, POWER SUPPLY SYSTEM, AND ELECTRICAL DEVICE - A nonaqueous secondary battery includes a negative electrode plate | 07-29-2010 |
20100227210 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a non-aqueous electrolyte secondary battery and a manufacturing method thereof. An object of the present invention is to obtain a non-aqueous electrolyte secondary battery that has an improved non-aqueous electrolyte impregnation ability into a flat wound electrode group that includes a porous insulating layer that contains inorganic oxide particles and a binder, little deterioration of charge/discharge cycle characteristics, high voltage discharge ability and favorable productivity. | 09-09-2010 |
20100255359 | BATTERY PACK AND BATTERY-EQUIPPED DEVICE - The invention provides a battery pack and a battery-equipped device in which, even if a battery experiences an abnormal event to cause thermal runaway, and generates heat, temperature increase in the battery pack and batteries except for the battery which experienced the abnormal event can be prevented. For this purpose, a heat absorbing member | 10-07-2010 |
20100266880 | BATTERY MODULE AND BATTERY PACK USING SAID BATTERY MODULE - A battery module includes a first enclosure, a second enclosure, and a plurality of batteries having vent holes accommodated between the first and second enclosures, and has a configuration in which a first partition member for accommodating the batteries individually at a position facing the battery vent holes in at least one of the first enclosure and the second enclosure is provided. | 10-21-2010 |
20110000801 | ELECTRIC POWER EQUIPMENT, AND ELECTRONIC DEVICE AND POWER SUPPLY ELEMENT INSPECTION EQUIPMENT USING SAME - An electric power equipment has a main body case, a plurality of power supply elements provided in the main body case, and a fire-extinguishing agent discharge space disposed facing the plurality of power supply elements. The fire-extinguishing agent discharge space includes fire-extinguishing agent spray space having a plurality of fire-extinguishing agent spray holes for spraying a fire-extinguishing agent toward the plurality of power supply elements, and a fire-extinguishing agent supply space coupled to the fire-extinguishing agent spray space via a plurality of fire-extinguishing supply holes. A fire-extinguishing agent tank is coupled to the fire-extinguishing agent supply space via a shutoff valve. | 01-06-2011 |
20110068800 | INTERNAL SHORT CIRCUIT EVALUATION APPARATUS FOR BATTERY - The present invention relates to an apparatus for evaluating an internal short circuit of a battery. An object of the invention is to provide an apparatus capable of evaluating whether or not an internal short circuit has occurred in an electrode group in consideration of pressure applied to the electrode group. An internal short circuit evaluation apparatus according to one embodiment of the invention includes at least a pressure member capable of operating independently and applying pressure to at least a predetermined position of the surface of the electrode group, and a short-circuiting member that is pressed into the predetermined position. An internal short circuit evaluation apparatus according to another embodiment of the invention includes a pressure member having an integrated short-circuiting member. | 03-24-2011 |
20110177366 | BATTERY PACK - A battery pack of the present invention includes: a battery assembly including a plurality of batteries having a sealed portion, the plurality of batteries being connected to each other; a terminal portion electrically connected to the battery assembly and outputting electric power; and a composite layer structure including a heat-absorbing layer and a heat-conductive layer layered on the heat-absorbing layer, the composite layer structure being arranged at least at a part of a periphery of the battery assembly. The heat-absorbing layer has a specific heat of 1,000 J/kg·° C. or more. The heat-conductive layer has a heat conductivity of 10 W/m·K or more. This configuration allows for a small, light, and highly safe battery pack that is free from battery pack damage even when a battery in the battery pack has trouble and emits a high-temperature inflammable gas to expose the inside of the battery pack to a high-temperature environment. | 07-21-2011 |
20120100421 | SECONDARY BATTERY - Disclosed is a battery | 04-26-2012 |
20120107674 | SECONDARY BATTERY HAVING ANTI-SCATTERING MECHANISM - A housing for containing electrode assemblies and an electrolyte includes a cover | 05-03-2012 |
20140375279 | LITHIUM ION BATTERY CHARGING METHOD AND BATTERY-EQUIPPED DEVICE - In a charging method for a lithium ion battery, constant current charging of the lithium ion battery is performed. The constant current charging includes at least three consecutive charging stages. The at least three consecutive charging stages include consecutive first, second, and third charging stages. The second charging stage has a set current value which is set lower than set current values of the first and third charging stages. | 12-25-2014 |