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Charging control method and charging control device

A charging control method and charging limitation technology, which are applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of affecting the service life, unable to repair the capacity, and recovering less power, so as to prolong the battery life, The effect of stable charging capacity and increased charging voltage

Active Publication Date: 2020-03-17
SUZHOU DURAPOWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The higher the battery holding voltage, the less power to restore, and the capacity cannot be repaired, which affects the service life

Method used

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  • Charging control method and charging control device
  • Charging control method and charging control device
  • Charging control method and charging control device

Examples

Experimental program
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Effect test

no. 1 example

[0031] See figure 2 , figure 2 The flowchart of the charging control method provided by the preferred embodiment of the present invention is shown. The method includes the following steps:

[0032] S110: Judging the attenuation of the battery charging capacity.

[0033] A battery management system (Battery Management System, BMS) calculates the attenuation of the battery charge.

[0034] S120: Increase the charging limit voltage.

[0035] In each charging process, according to the battery attenuation during the last charging process, the charging limit voltage is increased through the BMS.

[0036] See image 3 , Step S110 also includes the following steps:

[0037] S111: Charge to the charge limit voltage V n , Get the battery charge level E n Then, calculate the attenuation of the battery charge y n .

[0038] Charge to the charge limit voltage V n , Get the battery charge level E n Then, calculate the attenuation of the battery charge capacity through BMS.

[0039] S112: The attenuat...

no. 2 example

[0059] See Image 6 An embodiment of the present invention provides a charging control device 200. The charging control device 200 is applied to the control device 100 and includes a judgment module 110 and an upward adjustment module 120.

[0060] The judging module 110 is suitable for judging the attenuation of the battery charging power.

[0061] In the embodiment of the present invention, the judgment module 110 may be used to execute step S110.

[0062] The up-regulating module 120 is adapted to increase the charging limit voltage.

[0063] In the embodiment of the present invention, the up-regulation module 120 may be used to execute step S120.

[0064] See Figure 7 , The judgment module further includes a first acquisition sub-module 111 and a first comparison sub-module 112.

[0065] The first obtaining sub-module 111 is charged to the charging limit voltage V n , Get the battery charge level E n Then, calculate the attenuation of the battery charge y n .

[0066] In the embodim...

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PUM

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Abstract

The invention relates to a charge control method and a charge control device. According to the charge control method, in the battery charging process, by determining an amount of attenuation of an electricity quantity for battery charging, a charge limiting voltage is regulated up, so that a usable electricity quantity is kept unchanged in previous and middle periods of a life cycle of the battery. In each charging process, by regulating up the charge limiting voltage according to the amount of attenuation of the electricity quantity for charging in the charging process, the usable electricityquantity is kept unchanged in previous and middle periods of the life cycle of the battery; a user cannot feel that a traveling distance of an electric vehicle is shortened; user experience is good;in the previous period, the charge voltage is low; and the charge control method and the charge control device are beneficial for prolonging the service life of the battery.

Description

Technical field [0001] The invention relates to the field of lithium batteries, and in particular to a charging control method and a charging control device. Background technique [0002] In the prior art, during the entire battery life cycle, the battery charging limit voltage is always the same, the battery is charged to the upper limit voltage of the single cell or battery pack, and the charging ends after the constant voltage is converted. The prior art has the following problems. First, because the battery is always in a high voltage state when fully charged, the battery decays quickly, which affects battery life; second, the battery decays quickly, and the mileage of the electric vehicle will increase with the battery life. The attenuation is significantly reduced, and the customer experience is poor; the third aspect is that the battery charging state is in the high voltage upper limit state, and the safety is reduced. [0003] Charge recovery: The battery is left for a spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44
CPCY02E60/10
Inventor 蒙祥书王剑钱明益
Owner SUZHOU DURAPOWER TECH
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