CN204167919U - A kind of efficient balanced lead-acid battery charger - Google Patents

A kind of efficient balanced lead-acid battery charger Download PDF

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Publication number
CN204167919U
CN204167919U CN201420138391.9U CN201420138391U CN204167919U CN 204167919 U CN204167919 U CN 204167919U CN 201420138391 U CN201420138391 U CN 201420138391U CN 204167919 U CN204167919 U CN 204167919U
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China
Prior art keywords
parallel
cell
switch pipe
power switch
diode
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Active
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CN201420138391.9U
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Chinese (zh)
Inventor
王磊
王浩
司志钰
欧阳明高
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Shandong Xinyuan high tech Automobile Technology Co., Ltd
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Zibo Shun Tai Electric Automobile Co Ltd
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Abstract

A kind of efficient balanced lead-acid battery charger, belong to electric vehicle engineering field, comprise secondary co axial winding transformer more than, transformer primary side external power supply DC, the each secondary of transformer connects a cell, in parallel between cell, it is characterized in that, the external diverter module of each cell, described diverter module comprises a pair power switch pipe, the fly-wheel diode in parallel respectively with power switch pipe, the energy storage inductor of connecting with power switch pipe.The utility model has lower leakage inductance, leakage flux, and loss is little, efficiency is high.

Description

A kind of efficient balanced lead-acid battery charger
Technical field
The utility model relates to a kind of efficient balanced lead-acid battery charger, belongs to electric vehicle engineering field.
Background technology
For reaching the requirement of voltage, power and energy when electric automobile runs, vehicle mounted dynamic battery group is many composes in series use by a large amount of electrokinetic cell.Although along with the raising of technical matters, the difference between battery reduces gradually, under current manufacture craft level, be still difficult to ensure that the every batteries characteristic of card is completely the same.Especially under operating mode service conditions, carry out irregular charging, electric discharge continually, the difference after stack battery work a period of time between battery can worsen, thus the service efficiency of battery pack is reduced, and the life-span reduces.
Battery be connected in series use time, in group, battery is by under same current conditions, and usually make monomer capacious be in shallow filling and shallowly put state, battery capacity decay is slow, has longer useful life; And the little monomer of capacity is always in super-charge super-discharge state, battery capacity decay is accelerated, the lost of life.This species diversity becomes more serious after charging repeatedly, discharge cycle, and the life-span of whole battery pack declines thereupon.
Electric automobile in the process of moving, has starting to stop, accelerates climbing and the operating mode such as retarding braking, switches frequent and irregular between each operating mode.To the charge and discharge mode of battery pack under often kind of operating mode, size of current and time length are all random, and this irregular charge and discharge are very serious to the consumption of battery, but, be inevitable.
Although the inconsistency between battery cannot be eliminated completely, especially this inconsistency just exists at the beginning of it is produced, we by the method for equalizing charge, can reduce this inconsistency as far as possible, extend the useful life of battery pack.When between battery pack, difference is excessive, battery each in battery pack can be returned to " same starting point " by equalizing charge again effectively.Although this method is not the real difference eliminated between battery, but before can ensureing that battery pack new round operating mode is run, difference between battery is minimum, and battery pack can not be made to worsen further, correspondingly also makes the life-span of battery pack be extended.
Summary of the invention
The utility model provides a kind of efficient balanced lead-acid battery charger, and it has lower leakage inductance, leakage flux, and loss is little, efficiency is high.
A kind of efficient balanced lead-acid battery charger, comprise secondary co axial winding transformer more than, transformer primary side external power supply DC, the each secondary of transformer connects a cell, in parallel between cell, it is characterized in that, the external diverter module of each cell, described diverter module comprises a pair power switch pipe, the fly-wheel diode in parallel respectively with power switch pipe, the energy storage inductor of connecting with power switch pipe.
Described diverter module is connected with battery, forms a non-isolated semi-bridge alternation circuit.When a certain monomer overshoot, the switching tube conducting of its correspondence, energy storage is in by-pass inductor; When switching tube turns off, the energy flow of storage is to adjacent monomer, and the sense of current depends on the sense of current in energy storage inductor.The loss of this equalizing charge scheme is little, efficiency is high.
Further, described external power supply DC connects a half-bridge inversion circuit, described half-bridge inversion circuit comprises the diode D1, the switching tube Q2 that connect with external power supply DC, switching tube Q2 is in parallel with diode D3, external power supply DC is in parallel with diode D4, switching tube Q1, and switching tube Q1 is in parallel with diode D2.It can produce an ac square wave at transformer secondary, and the positive and negative half period charges to a pair adjacent battery respectively.By controlling the break-make of power switch pipe, transformer secondary output voltage can be adjusted.Similarly, the energy that the monomer absorption that terminal voltage is minimum is maximum.The secondary of transformer can reduce by half by this structure in identical balanced output terminal number situation, thus, reduce transformer loss and design difficulty.
The utility model has the advantages that: have lower leakage inductance, leakage flux, loss is little, efficiency is high.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of efficient balanced lead-acid battery charger, comprises secondary co axial winding transformer more than, transformer primary side external power supply DC, the each secondary of transformer connects a cell, in parallel between cell, the external diverter module of each cell.
For cell 1, described diverter module comprises a pair power switch pipe (Q3, Q4), the fly-wheel diode (D5, D6) in parallel respectively with power switch pipe, the energy storage inductor L that connects with power switch pipe.Diverter module is connected with battery 1, forms a non-isolated semi-bridge alternation circuit.
Described external power supply DC connects a half-bridge inversion circuit, described half-bridge inversion circuit comprises the diode D1, the switching tube Q2 that connect with external power supply DC, switching tube Q2 is in parallel with diode D3, and external power supply DC is in parallel with diode D4, switching tube Q1, and switching tube Q1 is in parallel with diode D2.

Claims (2)

1. an efficient balanced lead-acid battery charger, comprise secondary co axial winding transformer more than, transformer primary side external power supply DC, the each secondary of transformer connects a cell, in parallel between cell, it is characterized in that, the external diverter module of each cell, described diverter module comprises a pair power switch pipe, the fly-wheel diode in parallel respectively with power switch pipe, the energy storage inductor of connecting with power switch pipe.
2. efficient balanced lead-acid battery charger according to claim 1, it is characterized in that, described external power supply DC connects a half-bridge inversion circuit, described half-bridge inversion circuit comprises the diode D1, the switching tube Q2 that connect with external power supply DC, switching tube Q2 is in parallel with diode D3, external power supply DC is in parallel with diode D4, switching tube Q1, and switching tube Q1 is in parallel with diode D2.
CN201420138391.9U 2014-03-26 2014-03-26 A kind of efficient balanced lead-acid battery charger Active CN204167919U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420138391.9U CN204167919U (en) 2014-03-26 2014-03-26 A kind of efficient balanced lead-acid battery charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420138391.9U CN204167919U (en) 2014-03-26 2014-03-26 A kind of efficient balanced lead-acid battery charger

Publications (1)

Publication Number Publication Date
CN204167919U true CN204167919U (en) 2015-02-18

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Application Number Title Priority Date Filing Date
CN201420138391.9U Active CN204167919U (en) 2014-03-26 2014-03-26 A kind of efficient balanced lead-acid battery charger

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110808688A (en) * 2019-10-23 2020-02-18 福建睿能科技股份有限公司 Textile equipment and power supply circuit thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110808688A (en) * 2019-10-23 2020-02-18 福建睿能科技股份有限公司 Textile equipment and power supply circuit thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 255100 Shandong Zibo city Zichuan District Bell Tower Street office remote looking Mountain Road No. 16

Patentee after: Zibo Shun Tai Automobile Manufacturing Co., Ltd.

Address before: No. 157, Lu Tai Avenue, Zibo high tech Zone, Shandong Province

Patentee before: Zibo Shun Tai electric automobile company limited

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200731

Address after: No.168 xusan Road, Jinling Town, Linzi District, Zibo City, Shandong Province

Patentee after: Shandong Xinyuan high tech Automobile Technology Co., Ltd

Address before: 255100, Shandong Zibo Zichuan District bell tower Subdistrict Office, looking at mountain road, No. 16

Patentee before: ZIBO SUNTAE AUTOMOTIVE Inc.