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Charging method and charging system for parallel batteries

A charging method and charging system technology, which are applied to battery circuit devices, arrangement of multiple synchronous batteries, current collectors, etc., can solve the problem of asynchronous charging of parallel batteries.

Active Publication Date: 2020-06-12
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology

[0003] The present invention provides a charging method and charging system for parallel batteries to solve the problem of asynchronous charging of parallel batteries with different capacities and different chemical systems during the fast charging process. The technical solutions adopted are as follows:

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  • Charging method and charging system for parallel batteries
  • Charging method and charging system for parallel batteries
  • Charging method and charging system for parallel batteries

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Embodiment Construction

[0051] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0052] The invention provides a charging method and charging system for parallel batteries, which are used to solve the problem of asynchronous charging of parallel batteries with different capacities and different chemical systems during the fast charging process.

[0053] A method of charging batteries connected in parallel, such as Figure 4 As shown, the charging method is aimed at charging parallel batteries of different capacities, and the charging method includes:

[0054] S1. Detect the cell voltage value of the small-capacity battery among the parallel-connected batteries with different capacities;

[0055] S2. Detecting the cell voltage value of the high-...

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Abstract

The invention provides a charging method and a charging system for parallel batteries. The method comprises the following steps: detecting cell voltage values of small-capacity batteries in the parallel batteries with different capacities; detecting a cell voltage value of a high-capacity battery in the parallel batteries with different capacities; converting charging modes of the small-capacity battery and the large-capacity battery according to the battery cell voltage value of the small-capacity battery and the battery cell voltage value of the large-capacity battery respectively; and detecting whether a battery which is not fully charged exists or not, and selecting charging current corresponding to the electric quantity and the voltage of the battery which is not fully charged to charge the battery which is not fully charged according to the electric quantity and the voltage of the battery which is not fully charged until the charging is completed. The system comprises a module corresponding to the method.

Description

technical field [0001] The invention provides a charging method and a charging system for parallel batteries, which belong to the technical field of batteries. Background technique [0002] Due to the structural limitations of the battery compartments of mobile phones and tablets, in order to maximize the battery capacity, two batteries are usually used in a parallel charging scheme to expand the battery capacity of the mobile phone or tablet computer. However, when the materials, systems and capacities of the two batteries When there are differences in factors, due to factors such as space size, charging path impedance, and battery aging, small-capacity batteries tend to be charged quickly, while large-capacity batteries are charged more slowly. During the charging process, small batteries are overcharged and large batteries are not fully charged. The aging of the battery affects the user's use. Therefore, in the prior art, all mobile phones or tablet computers use two par...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0013
Inventor 魏学文牛海亮陈仁杰
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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