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Lead-acid battery large current equalization method based on single-chip microcomputer control

A lead-acid battery, equalization method technology, applied in charge equalization circuits, battery circuit devices, secondary battery charging/discharging and other directions, can solve the problems of few large current equalization, the discharge resistance discharge current is difficult to meet the fast equalization, etc. Achieving the effect of good balance, lower maintenance costs and lower costs

Inactive Publication Date: 2016-08-10
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the capacity of the lead-acid battery is relatively large, the discharge current of the discharge resistor will hardly meet the requirements of fast equalization
If the power of the discharge resistor corresponding to each lead-acid battery is increased, its volume and heat dissipation will face new challenges. Existing methods for balancing resistors rarely have methods for balancing large currents

Method used

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Embodiment

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0025] Such as figure 1 As shown, a large current equalization method for lead-acid batteries based on single-chip microcomputer control, the specific steps are:

[0026] (1) Set up a set of lead-acid battery system, including lead-acid battery pack, high-current discharge resistor R (high-power resistor with built-in radiator), lead-acid batter...

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Abstract

The invention discloses a lead-acid battery large current equalization method based on single-chip microcomputer control. Provided is a lead-acid battery system, which comprises at least two lead-acid batteries in series connection, a first contactor and a second contactor, the number of which is same with that of the lead-acid batteries, a large current discharge resistor, a lead-acid battery voltage detection module, a single-chip microcomputer controller and a protection device. The single-chip microcomputer controller obtains voltage of each lead-acid battery through the lead-acid battery voltage detection module; and when the balance degree between the lead-acid batteries is larger than a set threshold value, the lead-acid battery, of which the voltage is the largest, is discharged through the large current discharge resistor according to the set time. The method adopts a single-chip microcomputer to serve as a main equalization controller, thereby reducing cost of the system; through a contactor matrix manner, large current discharge of the lead-acid battery is realized, thereby improving equalization reliability and realizing large current discharge; and the method is simple to operate, safe and reliable and good in equalization effect.

Description

technical field [0001] The invention belongs to the technical field of equalization of battery packs, in particular to a large-current equalization method for lead-acid batteries based on single-chip microcomputer control. Background technique [0002] The development of fuel vehicles has caused the deepening of the global energy crisis, the continuous reduction of oil resources, and at the same time exacerbated the harm of rising temperatures and air pollution. The governments of most countries in the world and the automobile industry generally recognize that energy saving and emission reduction is the direction of the future development of the automobile industry, and the development of electric vehicles will be the best way to solve this difficulty. Electric vehicles have the advantages of low noise, no exhaust emissions, environmental friendliness, high thermal efficiency, low emissions, recyclable utilization, and improved energy structure. Various automobile manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42H01M10/44
CPCH01M10/4207H01M10/441H01M2010/4271H02J7/0016H02J7/0026Y02E60/10
Inventor 钟志贤张烈平
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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