Cell capacity calculation method and system, mobile power supply and shared charging equipment

Abstract

The invention provides a battery cell capacity calculation method and system, a mobile power supply and shared charging equipment. The method comprises the steps of converting a battery cell voltage sampling value, a charging voltage sampling value and a charging current sampling value obtained in a charging process into actual values, obtaining a first battery cell current through the calculationof charging conversion efficiency, and accumulating the first battery cell current into an initial battery cell electric quantity, thereby obtaining a current electric quantity; obtaining the currenttotal battery cell capacity when the battery is fully charged; converting the sampling values of the battery cell voltage, the discharge voltage and the discharge current obtained in a discharging process into actual values, obtaining a second battery cell current through the calculation of discharging conversion efficiency, and updating the current electric quantity; and when the current total battery cell capacity is compared with the stored historical total battery cell capacity and the variation is greater than or equal to a first threshold, storing the current total battery cell capacityto replace the historical total battery cell capacity. According to the invention, active battery cell capacity monitoring of the mobile power supply is realized, and the problem of subsequent use ofa power bank caused by incapability of monitoring the battery cell capacity is solved.

Description

technical field [0001] The invention relates to the fields of electrical measurement and calculation, in particular to a battery capacity calculation method, system, mobile power supply and shared charging equipment. Background technique [0002] As smartphones and tablets are used longer and longer, people's demand for charging mobile phones and tablets is increasing. Therefore, shared charging treasure services have gradually appeared in various public places. [0003] When a traditional shared power bank performs charging management, such as the mobile power supply and charging system disclosed in the patent document CN204668976U, the charging control is controlled by its own power management system, thereby preventing overcharging and overdischarging. [0004] However, since shared charging treasures are usually used frequently and the batteries are often in a state of charging and discharging, the battery capacity of shared charging treasures will decay with frequent us...

AI Technical Summary

Problems solved by technology

[0005] 1. The user cannot judge whether the capacity of the shared power bank battery is sufficient for normal use. In the subsequent use process, it is easy to happen that the capacity of the shared power bank battery is reduced and cannot meet the normal use needs of customers, or even cannot provide charging.

[0006] 2. When encountering the above situation, the only way to report the situation to the equipment provider is through the user and the merchant where the equipment is shared

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