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7223results about "Electrolyte accumulators manufacture" patented technology

Electrical storage device and manufacturing electrical storage device

An electrical storage device of the present invention is characterized in that a positive electrode, a negative electrode, a lithium electrode, and an electrolyte capable of transferring lithium ion is included, the lithium electrode is arranged to be out of direct contact with the negative electrode, and lithium ion can be supplied to the negative electrode by flowing a current between the lithium electrode and the negative electrode through an external circuit. With the above characteristic, problems such as non-uniform carrying of lithium ion to the negative electrode, shape-change of a cell, and temperature increase of an electrolytic solution under incomplete sealing of a cell and the like can be easily solved. A using method of the electrical storage device is characterized in that, by using the lithium electrode as a reference electrode, the positive electrode potential and negative electrode potential can be measured, and the potential of the positive or negative electrode can be controlled when the electrical storage device is charged or discharged. Therefore, the potentials of the positive electrode and negative electrode can be monitored, thereby it can be easily determined whether deterioration of the electrical storage device is caused by the positive electrode or the negative electrode. Also, it is possible to control the device with the potential difference between the negative electrode and reference electrode, that is, the negative potential. In addition, when characteristics deteriorate such as the internal resistance increase, an appropriate amount of lithium ion can be supplied to the negative electrode and/or positive electrode by the lithium electrode.
Owner:FUJI JUKOGYO KK

Lithium ion battery with improved low-temperature charging-discharging performance and preparation method thereof

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery with improved low-temperature charging-discharging performance and a preparation method thereof. The lithium ion battery comprises a naked core which is formed by overlapping a positive plate, an isolating membrane and a negative plate in sequence and winding along the same direction, and electrolyte thereof, wherein the positive plate comprises a positive current collector and a positive diaphragm with which the positive current collector is coated; the negative plate comprises a negative current collector and a negative diaphragm with which the negative current collector is coated; a first blank area is formed at one end of the positive current collector; a first conductive terminal is welded in the first blank area; a second black area is formed at one end of the negative current collector; a second conductive terminal is welded in the second blank area; the other end of the positive current collector and/or the negative current collector is provided with a third blank area; a third conductive terminal is arranged in the third blank area. In the lithium ion battery, the third conductive terminal is arranged on a plate, and is used for heating the battery at a low temperature, so that the battery can be kept at a normal temperature, and the charging-discharging performance of the battery at a low temperature is improved.
Owner:HUNAN LIFANG NEW ENERGY SCI & TECH
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