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Active charge/discharge balancing system of power battery and implementation method thereof

A technology of equalizing charge and discharge and active equalization, which is applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as single battery disconnection failure, and achieve effective and efficient use, high reliability, and fast equalization speed

Inactive Publication Date: 2011-11-02
张化锴
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art, the purpose of the present invention is to propose a power battery active equalization charging and discharging system and its implementation method, which can not only realize the balance between the single cells in the power battery pack simply and reliably, but also solve the problems of individual single cells. Problems caused by battery failure

Method used

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  • Active charge/discharge balancing system of power battery and implementation method thereof
  • Active charge/discharge balancing system of power battery and implementation method thereof
  • Active charge/discharge balancing system of power battery and implementation method thereof

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Embodiment Construction

[0050] Refer to attached picture Figure 1-Figure 5 As shown, a specific embodiment of the present invention is described in detail.

[0051] An active balancing charging and discharging system for a power battery, comprising the following parts,

[0052] The first part is to build the hardware architecture of the battery pack balanced charging and discharging system;

[0053] The second part, the method of implementing balanced charge and discharge among battery packs;

[0054] The third part, the implementation process of the method is to judge the state of the battery pack, prepare for charging and discharging; control the charging and discharging of the single cells in the battery pack, and realize the balance within the group;

[0055] The fourth part is to exit the charging and discharging mode, store the charging and discharging data of the battery pack, and display it on the display.

[0056] The hardware of the power battery active equalization charging and dischar...

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Abstract

The invention discloses an active charge / discharge balancing system of a power battery, which comprises the following parts: a first part of a hardware frame for establishing a charge / discharge balancing system of a battery pack; a second part of a method for implementing balanced charge / discharge among battery packs; a third part of the implementation of the method which comprises the steps of judging the state of the battery pack and preparing for the charge / discharge, and controlling the charge / discharge of a single battery in the battery pack to realize in-group balance; and a fourth part of quitting a charge / discharge mode, storing charge / discharge data of the battery pack and displaying the charge / discharge data via a display. The active balanced charge / discharge system of the power battery can be used for charging and discharging power batteries of pure electric vehicles or hybrid electric vehicles. The traditional active balancing technique has the defects of bad balancing effect, high requirement on capacitance, inductance or a DC / DC converter, complex control and the like, and is difficult to balance charging and discharging processes at the same time. In the invention, the charge / discharge hardly wastes any energy and can be balanced rapidly. The invention has simple battery grouping technique and high reliability.

Description

technical field [0001] The invention relates to the field of battery management of new energy vehicles, in particular to an active balanced charging and discharging system and implementation method for power batteries that can be used for high-current charging and discharging of power batteries of pure electric vehicles and hybrid vehicles. Background technique [0002] Since the working voltage of a single battery is generally around 2.5-4.2V, batteries of different materials are different. In the application of automotive power batteries, dozens to one or two hundred single batteries need to be connected in series to increase the working voltage. However, due to the limitation of the battery production process, there are inconsistencies in capacity, voltage, internal resistance, etc. between the single batteries. car operating costs. Therefore, the balancing technology of the battery is one of the keys to the industrialization of electric vehicles. [0003] Existing batt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 张化锴狄艳军
Owner 张化锴
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