A fast detection method for battery life

A technology for battery life and detection methods, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as exhaustion and life attenuation, and achieve the effect of avoiding inaccuracy, rapid prediction, and wide application value.

Active Publication Date: 2017-09-15
中国人民解放军92537部队
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  • Description
  • Claims
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Problems solved by technology

[0003] After the battery has been used for a long period of time, its lifespan decays or even fails

Method used

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  • A fast detection method for battery life
  • A fast detection method for battery life
  • A fast detection method for battery life

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Embodiment Construction

[0050] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0051]During the use and storage of the battery, the battery discharge voltage, maximum capacity, efficiency, etc. will gradually decline, and after the performance degrades to a certain extent, it will be scrapped because it cannot meet the use requirements. Therefore, the main failure mode of the battery is a performance degradation failure. The degradation modeling method can be used for the life prediction of degraded failure products.

[0052] Degradation modeling must first select the key performance parameters of the product. Internal resistance and available capacity are commonly used characteristic parameters to characterize the state of battery performance. The internal resistance will gradually increase with the aging of the battery. Many scholars at home and abroad have studied the battery life prediction through the internal resistance, but t...

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Abstract

The invention discloses a method for quickly detecting battery life. The method first quickly estimates the maximum available capacity of the battery based on the partial discharge method, then obtains the capacity retention rate by using the maximum available capacity, and then calculates the capacity retention rate based on the current capacity retention rate and the known rated cycle life of the battery. Estimate the remaining cycle life of the battery characterized by the number of cycles. It can be seen that the present invention selects the maximum available capacity as a key performance parameter, and performs degradation trajectory modeling on the maximum available capacity of the battery based on the performance degradation method, thereby realizing the prediction of the remaining cycle life of the lead-acid battery. In addition, the present invention quickly estimates the maximum available capacity of the battery based on the partial discharge method, and realizes the rapid prediction of the remaining cycle life of the battery. Since there is no need for full discharge, the test time is greatly shortened, and the accuracy can be satisfactory under the premise of mastering the battery discharge law. This method has a wide range of application values ​​in military, energy, transportation and other fields.

Description

technical field [0001] The invention relates to the technical field of battery life detection, in particular to a fast detection method for battery life. Background technique [0002] With the wide application of electrification devices, electricity is widely used in production, life and national defense. However, if the production and life that depend on electricity encounter a power outage, the loss will be quite huge, or some electrical equipment cannot be directly wired for power supply, or there are special requirements. Therefore, batteries play an increasingly important role in production and life. [0003] After the battery is used for a long period of time, its lifespan decays or even fails. Taking military equipment as an example, if the battery cannot play its due role at a critical moment, it will have a huge blow to combat effectiveness. Therefore, how to understand and grasp the battery status and judge whether it can meet the use requirements at critical tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 刘隆波黄金娥王岩磊徐定海曹建华
Owner 中国人民解放军92537部队
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