A device for calculating the remaining service time of a lithium battery and its calculation method
A lithium battery, time technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problem of unsatisfactory batteries, and achieve the effect of improving accuracy
Active Publication Date: 2021-03-12
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
These methods can indeed achieve better calculation results under certain conditions after accurate calibration, but they are still unsatisfactory in the complex working conditions of frequent load changes and gradual battery aging.
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[0055] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.
[0056] please combine figure 1 and figure 2 As shown, a device for calculating the remaining service time of a lithium battery provided by the present invention includes a lithium battery body 1, and also includes:
[0057] The current sensor 2 is used to detect the current signal of the lithium battery body 1 and transmit the parameters of the current signal to the controller 6 . If the current is small, you can directly measure the precision resistance in series with the lithium battery body 1 loop; if the current is large, you can use a Hall sensor or a shunt to measure.
[0058] The electric quantity sensor 3 is used to detect and calculate the current electric quantity of the lithium battery body 1 , and transmit the current electric quantity parameter to the controller 6 . Depending on the cost and accuracy, you can choose...
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The invention discloses a device for calculating the remaining service time of a lithium battery and a calculation method thereof, comprising a lithium battery body and a current sensor for detecting the current signal of the lithium battery body and transmitting the current signal parameters to the The power sensor is used to detect and calculate the current power of the lithium battery body and transmit the current power parameters to the controller; the temperature sensor is used to detect the temperature of the surface of the lithium battery body and transmit the temperature parameters to the controller; the cycle The number of times counter is used to calculate the number of cycles that the lithium battery body has been used, and the number of cycles is passed to the controller; the controller is used to calculate the number of cycles of the lithium battery through the current signal parameters, current power parameters, temperature parameters and cycle times parameters. The current remaining usage time of the main body. The invention can detect and calibrate the remaining service time of the lithium battery combined with online self-learning and correction offline, and has the characteristics of good adaptability, high precision and online self-learning.
Description
technical field [0001] The present invention relates to lithium battery detection technology, and more particularly, to a device for calculating the remaining service time of a lithium battery and a calculation method thereof. Background technique [0002] With the continuous expansion of lithium battery applications, examples of lithium batteries as a power source can be seen from consumer electronics, power tools to vehicles. As an energy storage device, lithium battery has a certain capacity limit. In order to improve the user experience, the current system using lithium battery will prompt the user of the remaining battery life time, so that the user will not be inconvenienced due to insufficient system power or loss. [0003] At present, the detection and calculation of the remaining service time of the lithium battery is generally rough, and it is usually estimated by dividing the current read power of the management chip by the current current. When the battery is r...
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IPC IPC(8): G01R31/367G01R31/382
CPCG01R31/3646G01R31/367
Inventor 胡继康申屠理锋徐丽敏刘金龙吕忱奚嘉奇
Owner BAOSHAN IRON & STEEL CO LTD