Smart battery device
A battery device and energy storage unit technology, which is applied in the direction of battery circuit devices, circuit devices, batteries, etc., can solve problems such as shell deformation, battery core short circuit, and the inability to monitor the expansion degree of lithium batteries
Active Publication Date: 2021-12-03
QUANTA COMPUTER INC
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Problems solved by technology
However, in existing mobile devices, the expansion degree of the lithium battery cannot be monitored. When the expansion rate of the lithium battery reaches 10%, the lithium battery may directly squeeze the casing of the mobile device, causing the casing to Deformation may even cause a short circuit of the battery cells in the lithium battery, resulting in the possibility of explosion
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[0018] The present invention is described with reference to the drawings, wherein like reference numerals designate similar or identical components throughout. The above-mentioned drawings are not drawn in actual scale, and are only provided to illustrate the present invention. Some aspects of the invention are described below as references to illustrate exemplary applications. This means that numerous specific details, relationships and methods are set forth in order to provide a complete understanding of the invention. However, one skilled in the art will recognize that the invention may be practiced without one or more of the specific details or otherwise. In other instances, well-known structures or operations are not listed in detail to avoid obscuring the invention. The invention is not limited by the recited sequences of acts or events, as some acts may occur in different orders or concurrently with other acts or events. Furthermore, not all recited acts or events ne...
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A smart battery device includes an energy storage unit, a temperature sensing unit, a storage unit, and a processing unit. The processing unit calculates the internal resistance of the energy storage unit to obtain a first increment corresponding to the internal resistance, and detects the charging voltage that is charging the battery device to obtain a second increment that corresponds to the charging voltage. The processing unit detects the discharging current of the energy storage unit to obtain a third increment corresponding to the discharging current. The processing unit further reads the cycle count from the storage unit to obtain a fourth increment that corresponds to the cycle count, reads the temperature from the temperature sensing unit to obtain a fifth increment that corresponds to the temperature, and determines the swelling rate of the battery device according to the product value of the first, second, third, fourth, and fifth increments.
Description
technical field [0001] The invention relates to a method for detecting the expansion rate of a battery, in particular to a method for detecting the expansion rate of a battery by using the charging and discharging process. Background technique [0002] In today's booming mobile communication era, batteries (usually lithium batteries) have become one of the most critical components of a mobile device. As the size of mobile devices becomes smaller and smaller, the space for accommodating batteries in the mobile devices becomes more and more limited. The lithium battery in the mobile device is more likely to expand with the accumulation of charge and discharge times, and the degree of expansion will also increase. [0003] In the space where the lithium battery is placed in the mobile device, the industry usually reserves a space of 10% of the thickness of the lithium battery to avoid extrusion of the mobile device casing caused by the expansion of the lithium battery. Howeve...
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IPC IPC(8): H02J7/00H01M10/42H01M10/48
CPCH02J7/007194H02J7/007182H02J7/00716H01M10/4257H01M10/486H01M2010/4271H02J7/005Y02E60/10G01R31/389G01R31/3842G01R31/3648G01R19/10G01R27/08H02J7/0047H02J7/00712G01R31/392H02J7/00714H02J7/0049H01M10/443H01M2220/30
Inventor 颜维廷
Owner QUANTA COMPUTER INC