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Charging control device, method and battery management system

A charging control method and charging control technology, applied in the field of charging control devices and battery management systems, can solve problems such as battery undercharging, battery overcharging, and shortening the service life of battery packs, so as to avoid undercharging and overcharging, and accurately charge The effect of controlling and prolonging the service life

Active Publication Date: 2012-05-23
AOTU ELECTRONICS WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the characteristics of single batteries such as internal resistance and capacity cannot be completely consistent, the existing charging control method is likely to cause some batteries in the battery pack to be overcharged, while the other part of the batteries are undercharged.
If the battery pack is charged and used in this state for a long time, it will accelerate the aging speed of the battery pack and greatly shorten the service life of the battery pack

Method used

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  • Charging control device, method and battery management system
  • Charging control device, method and battery management system
  • Charging control device, method and battery management system

Examples

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Embodiment Construction

[0018] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Moreover, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0019] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the ...

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Abstract

The invention discloses a charging control device, a charging control method and a battery management system. The charging control device is used for controlling the process of charging a battery pack by a charging device, and comprises a battery state acquisition unit and a control signal generation unit, wherein the battery state acquisition unit is used for acquiring the state of each single battery in the battery pack, and the state of each single battery in the battery pack at least comprises the voltage of each single battery; and the control signal generation unit is used for switching the charging mode of the charging device according to the voltage of the single battery in the battery pack, and the charging mode comprises at least one of a constant-current charging mode and a constant-voltage charging mode as well as a pulse charging mode. More accurate charging control can be provided according to the device, the method and the system provided by the invention.

Description

technical field [0001] The present invention relates to the field of battery management, and more specifically, to a charging control device, method and battery management system. Background technique [0002] Due to the limitation of power battery energy and terminal voltage, electric vehicles such as electric vehicles or electric bicycles need to use multiple batteries in series to provide sufficient power. The power battery pack for electric vehicles has high voltage and large capacity, and there are many single cells connected in series in the battery pack. Therefore, a battery management system (BMS, Battery Management System) is generally used to manage the battery pack. An existing battery management system generally consists of a battery management unit (BMU, Battery Management Unit) and a charger. [0003] When charging the battery pack, the existing battery management system generally performs charging control based on the terminal voltage of the battery pack. Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCY02T10/7055H02J7/0022Y02T10/70H02J7/0013
Inventor 徐顺刚许建平王绍兰张卫张涛柯景波
Owner AOTU ELECTRONICS WUHAN
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