Charge control method and charge control device

A charging control method and charging control technology, which are applied in secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as irreparable capacity, low recovery power, and impact on service life, so as to achieve stable charging power, The effect of increasing the charging voltage and prolonging the battery life

Active Publication Date: 2018-01-19
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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  • Charge control method and charge control device
  • Charge control method and charge control device
  • Charge control method and charge control device

Examples

Experimental program
Comparison scheme
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no. 1 example

[0031] see figure 2 , figure 2 The flow chart 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 charging capacity of the battery.

[0033] The attenuation of the battery charging power is calculated by a battery management system (Battery Management System, BMS).

[0034] S120: Increase the charging limit voltage.

[0035] In each charging process, according to the amount of battery attenuation in the last charging process, the charging limit voltage is raised through the BMS.

[0036] see image 3 , step S110 also includes the following steps:

[0037] S111: Charge to the charging limit voltage V n , to obtain the battery charge level E n After that, calculate the attenuation y of the battery charging capacity n .

[0038] Charge to charge limit voltage V n , to obtain the battery charge level E n Finally, the attenuation of...

no. 2 example

[0059] see Figure 6 , the embodiment of the present invention provides a charging control device 200 . The charge control device 200 is applied to the control device 100 and includes a judging module 110 and an up-regulation module 120 .

[0060] The judging module 110 is adapted to judge the attenuation of the charging capacity of the battery.

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

[0062] The up-regulation module 120 is adapted to up-regulate 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 submodule 111 and a first comparison submodule 112 .

[0065] The first acquisition sub-module 111 is charged to the charging limit voltage V n , to obtain the battery charge level E n After that, calculate the attenuation y of the batt...

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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, in particular to a charging control method and a charging control device. Background technique [0002] In the prior art, throughout the life cycle of the battery, the battery charging limit voltage remains unchanged, and the battery is charged to the upper limit voltage of a single cell or battery pack, and the charging ends after turning to a constant voltage. The existing technology has the following problems. First, because the battery is always in a high voltage state when fully charged, the battery decays quickly, which affects the battery life; second, the battery decays quickly, and the mileage of the electric vehicle will decrease 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 a high voltage upper limit state, and the safety is reduced. [0003] Charge recovery: The battery i...

Claims

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Application Information

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IPC IPC(8): H01M10/44
CPCY02E60/10
Inventor 蒙祥书王剑钱明益
Owner SUZHOU DURAPOWER TECH
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