Battery safety control method and smart battery
A safety control and battery technology, applied in the direction of secondary battery charging/discharging, secondary battery, secondary battery repair/maintenance, etc. hidden dangers, prolong service life, and ensure the effect of safety
Active Publication Date: 2022-04-08
深圳市智安新能源科技有限公司
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AI Technical Summary
Problems solved by technology
In order to ensure safety, existing batteries collect battery voltage and current and calculate the capacity of the battery pack, but they cannot evaluate the life and aging of the battery, and cannot evaluate the health and safety of the battery
[0004] For example, the robot battery has no way to detect the leakage current and DC internal resistance of the battery, and the battery cannot be intelligent and safe. The robot battery adopts a general equalization method, which requires a large equalization current, high sampling accuracy, and high requirements for battery consistency. And there will be repeated equalization, making the battery unsafe
Method used
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Experimental program
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Effect test
Embodiment Construction
[0037] The present invention is further described below in conjunction with embodiment.
[0038] The battery safety control method of this embodiment also includes a battery leakage current detection and judgment method, a battery internal resistance detection and judgment method, a battery equalization method, and a battery capacity detection and judgment method, and the battery contains multiple cells.
[0039] Among them, the battery leakage current detection and judgment method is: when the battery starts to stand still, record the initial time T0, and sample the initial voltage V0 of each battery cell at this time; when the battery stands still to the set time Tn, sample and calculate At this time, the static voltage Vn of each cell;
[0040] Through the formula: Kn=(Vn-V0) / (Tn-T0), calculate the voltage drop Kn of each cell at the corresponding time Tn;
[0041] When Kn>Kx, it is determined that the life of the battery is over, and Kx is a set value.
[0042] There are...
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The invention discloses a battery safety control method, which comprises a battery leakage current detection and judgment method, a battery internal resistance detection and judgment method, a battery equalization method, and a battery capacity detection and judgment method. Judging the battery life at the same time as the loss of battery capacity can better ensure the safety of the battery and reduce potential safety hazards. Among them, the battery equalization method is to equalize according to the cell capacity difference calculated at the end of battery charging, so that repeated equalization does not occur, and the service life of the battery is prolonged. The present invention also discloses an intelligent battery using the above-mentioned security control method for security control, which can control security more intelligently.
Description
technical field [0001] The present invention relates to a battery safety control method, and also relates to an intelligent battery including the above safety control method. Background technique [0002] With the country's strong support for new energy and the increasing maturity of battery technology, batteries have been widely used in robots, electric cars, electric motorcycles, electric bicycles, solar energy, mobile communication terminal products and energy storage products. [0003] Among them, battery safety is the first problem to be considered and solved in the development process. In order to ensure safety, existing batteries collect battery voltage and battery current to calculate battery pack capacity, but they cannot evaluate battery life and aging, and cannot evaluate battery health and safety. [0004] For example, the robot battery has no way to detect the leakage current and DC internal resistance of the battery, and the battery cannot be intelligent and s...
Claims
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IPC IPC(8): G01R31/392G01R31/396G01R31/388G01R31/52H01M10/42H01M10/44H01M10/48
CPCG01R31/392G01R31/396G01R31/388G01R31/52H01M10/425H01M10/441H01M10/482Y02E60/10
Inventor 张彩辉
Owner 深圳市智安新能源科技有限公司