CN1338803A - Fast pulse charger of accumulator and its charging method - Google Patents
Fast pulse charger of accumulator and its charging method Download PDFInfo
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- CN1338803A CN1338803A CN 01126621 CN01126621A CN1338803A CN 1338803 A CN1338803 A CN 1338803A CN 01126621 CN01126621 CN 01126621 CN 01126621 A CN01126621 A CN 01126621A CN 1338803 A CN1338803 A CN 1338803A
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- charging
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Abstract
A high-speed pulse charger for accumualtor is disclosed, which features that regulatable pulse width, over-charge and over-heat protection, high-current charging and automatic charging. Its charging method features that after each charging pulse the accumulator is quickly depolarized.
Description
The present invention relates to a profit can prevent from again to overcharge the full-automatic fast pulse charger device that polarizes with the degree of depth when charging to boost battery charge, is applicable to the charging to storage battery, belongs to distribution and control appliance class.
As everyone knows, cause the charge in batteries time long, the reason that useful life is short: be the DC charging technology that is it, the charging of storage battery and industrial plating have extremely similarity, they all are to adopt DC techniques, as long as when we notice concerning between electroplating quality and the electric current, will understand this reason, when the time with little electric current plating, its coating is thin, compactness is good, and coating combines with object firmly, and be plated to certain thickness needs chronic.Otherwise adopt big electric current plating, then coating is thick, but quality is loose, peel off easily, reason is to accompany bubble in coating, combine not firmly with object, also is a reason to charge in batteries, if when using large current charge, storage battery also can produce bubble, and the active material on the pole plate is come off easily, thereby causes the lost of life of storage battery, so must use low current charge, charging interval must be very long, and this is the result that must cause with DC charging, this shows, make the charge in batteries quality good, its prerequisite can not produce bubble when charging.DC charging also can make the lost of life of storage battery, two reasons are arranged here: the one, the user does not understand the characteristic of storage battery, think that the charging interval is long more, it is many more to charge into electric weight, in fact storage battery all exists a time can produce bubble with any one charging current, causes the active material on the pole plate to come off, and shortens storage battery useful life, also, cause charging personnel carelessness inevitably and the generation bubble because the charging interval is long; The 2nd, when DC charging, can not record the definite electromotive force at storage battery two ends in real time, because on its terminal voltage except the electromotive force of storage battery, also seal in various polarizing voltages, for example ohmic polarization, concentration polarization, electrochemical polarization, and along with the intensification of polarization, polarizing voltage is also strengthening, thereby can not correctly control the charging interval, can only and be different in fact with charging personnel's experience to the different charge in batteries time.Done a large amount of experiments by U.S. scientist Maas in the charging current of research storage battery and its time of giving vent to anger, found with the charging current I that firmly anticipates
CDuring to charge in batteries, all there is the time t that gives vent to anger, in fact, the time of giving vent to anger is relevant with the polarization degree of depth, and the speed of the appearance polarization degree of depth is relevant with the charging current size, charging current is big more, the time of giving vent to anger more early, otherwise charging current is more little, the time of giving vent to anger is slow more, if charging current I
CWith the time t that gives vent to anger, to fasten when being linked to be a curve at coordinate, it is very near an exponential decay curve, and we call storage battery to this curve can accept charging curve:
I
C＝I
0e
-ot……<1>
In the formula: I
0For accepting maximum charging current
α is that storage battery can be accepted charging and accepts ratio.
In the DC charging technology, a given charging current I
CJust can be from formula＜1〉obtain the time t that gives vent to anger
C
t
C＝(1/a)1n(I
0/I
C)……(2)
Storage battery charges into electric weight Q
D=I
C.t
C(3)
If prolong charging interval t〉tc, may not increase the charge volume of storage battery, a large amount of bubbles will appear, and the storage battery heating also makes the lost of life of storage battery.
If charging current is by formula＜1〉carry out, then can obtain the electric weight that any time charges into storage battery.
As t → ∞
Q
∞＝I
0/a＝C……(5)
In the following formula C be storage battery capacity then
A=I
0/ C or I
0=ac ... (6)
Formula (6) expression: after the capacity of storage battery was determined, a is big more, and then initial charge current was big more, and charging rate is also fast more.
Purpose of the present invention provides a kind of method and charger of boost battery charge.
In order to achieve the above object, the present invention considers like this, if use charging current I
PVery near I
0, obtain generation bubble time tp=(1/a) ln (I by (2) formula
0/ I
P).
Obvious t
PVery short, establish t
P=τ is as the charging pulse width, and in this pulse duration, charging current is I
P, when t 〉=τ, I
P=0, use a regular time τ ' then, internal storage battery is carried out depolarising to be handled, storage battery returns to the state before charging again after depolarising is handled, the repetition charging method first time is charged then, with the storage battery abundance, this charging method was called pulse charging method after process repeated for n time.
In each charge cycle T=τ+τ ', the polarization of internal storage battery is all eliminated, therefore adopts this charging method, storage battery can not produce bubble, so the life-span of storage battery obtains prolonging, and the charging interval is short, and storage battery charges into electric weight in each charge cycle be Δ Q.
ΔQ＝I
P.τ……(7)
Through behind several charge cycles, charge into electric weight Q
PFor
Q
P∑ΔQ＝n.I
P.τ……(7)
With pulse charging method one the charging complete cycle after, storage battery both end voltage=ε.
ε is the storage battery electromotive force, notices that ohmic polarization voltage works as I
PDisappeared immediately in=0 o'clock, but concentration polarization and electrochemical polarization voltage can not disappear immediately, therefore, τ ' in the time by a burst pulse, heavy-current discharge could be eliminated:
This shows, adopt impulse quick charge method, the received charging current curve of storage battery, in fact near our a bit of with the current maxima in the above only, in each charge cycle, can not produce bubble with this mise-a-la-masse method storage battery, and after can the discharge pulse when depolarising is handled, before next charging pulse, in this period, go to measure the terminal voltage of storage battery, this voltage is the real electromotive force ε of storage battery, desire to reach preset voltage and compare then with behind the charge in batteries, when comparator was output as " 1 ", the expression storage battery was sufficient, stops charging, otherwise continue charging, realize the charging automation.
Storage battery is owing to exist memory effect, make its capacity diminish, therefore, in the present invention, need when energized, produce a start discharge pulse G, recharge after the accumulators discharge, the memory screened film on the accumulator plate is eliminated in this pulse on the one hand, makes storage battery can accept charging curve on the other hand and obtains normalizing.
As a charger, also require to be provided at big electric current during the charging pulse and charge into storage battery and could realize quick charge, require the power supply capacity of charger big simultaneously, by formula (6) a=I
0/ C is as can be known: maximum can be accepted charging current I
0Big more with the multiplying power a (being that storage battery can be accepted charging acceptance ratio) of battery capacity C, charging rate is fast more, experimental results show that: a is relevant with discharging current, and concerning given arbitrarily depth of discharge, charge in batteries is accepted to be directly proportional promptly with the logarithm of the discharging current of storage battery than a:
a＝KlogkI
d……(9)
I in the formula
dBe the battery discharging electric current:
K and k are constant
Substitution formula (6) can get
I
0＝KClogkI
d……(10)
The ability that formula (10) expression storage battery can be accepted charging current is the relation with the discharging current of storage battery, discharging current I
dBig more, initial charge current I
0Also big more, therefore, suitably interspersed heavy-current discharge in storage battery and charging process, general I
dBe the several times of charging current, but because discharge pulsewidth τ '
dVery narrow, so that storage battery is emitted electric weight is still very little, but improved the initial charge current I of storage battery greatly
0
The invention will be further described below in conjunction with accompanying drawing:
Accompanying drawing 1 is current waveform figure in the charging process of the present invention.
Accompanying drawing 2 is charging pulse program control oscillogram of the present invention.
Accompanying drawing 3 is charging pulse program control block diagram of the present invention.
Accompanying drawing 4 is main circuit of the present invention.
Accompanying drawing 5 is electronic transformer controlling party block diagram of the present invention.
Accompanying drawing 6 is electronic transformer schematic diagram of the present invention.
1 the present invention adopts impulse quick charge method with reference to the accompanying drawings, and the pulse current charge cycle is T, and wherein τ is the charging pulse width, to different batteries is that distinct pulse widths τ can be arranged, so be adjustable, τ ' is the depolarising pulse duration, it is partly formed by three, and pulsewidth τ ' stops to charge
Fill, discharge pulsewidth τ '
dWith test pulse τ '
Put, according to storage battery current waveform requirement in charging process, charger is by the adjustable multivibrator A of output pulse width and the multivibrator A that output pulse width is fixing; Charge with the storage battery that adapts to all size and kind, storage battery is by power circuit store electrical energy (charging) when A=" 1 ", make when A=" 1 " and handle polarization monostable circuit B and C enters operating state, it is to trigger monostable circuit B, C by the pulse front edge that differential circuit takes out the back edge of charging pulse or A=1 to enter temporary stable state, then by AND gate isolating τ ' in the period of τ '
Fill, τ '
dAnd τ '
PutThree pulse durations, the wherein AND gate of B, C output discharge pulse width τ '
d, it designs as requested, and C=τ '
Put, it also is the signal of opening a sluice gate of opening electronic switch, this signal does not arrive before or later, electronic switch is signal at stop in front of the door.
Comparator in the circuit is the monitoring of finishing battery condition, mainly monitors two physical quantitys of storage battery here, comparator P
1Be the terminal voltage that is used for monitoring storage battery, comparator P
2Be the skin temperature that is used for monitoring storage battery, comparator P
1Be that the time input accumulator voltage sampled signal of opening a sluice gate signal C=" 1 " by electronic switch is put the charging set point and compared with giving, when surpassing set point, be output as " 1 " on the contrary be " 0 ", comparator P
2Be by the input of temperature test electric bridge, same skin temperature when the monitoring storage battery surpasses represents storage battery degree of depth polarization when being output as " 1 " when giving the value of putting, produce a large amount of bubbles, otherwise be " 0 ", and the expression storage battery is in normal state.
Two rest-set flip-flops are arranged in the circuit; they all are in " 0 " state in charger opening power moment is Q=" 0 "; Q=" 1 "; it is used and is used for protecting storage battery; RS-1 is used for preventing that overcharging from appearring in storage battery; when storage battery is charged to when giving the value of putting; P1 is output as " 1 "; make RS-1 upset Q=" 1 "; Q=" 0 "; so the circuit A before the charging; B; the C Close All; RS-2 is used for preventing that hyperpolarization from appearring in storage battery, and when storage battery during at hyperpolarization, temperature raises; when skin temperature surpasses preset value, comparator P
2Output " 1 " makes RS-2 be turned into Q=" 1 ", Q=" 0 ", makes A, B, C circuit reset equally.
In addition, circuit also is provided with start monostable circuit G, mains switch on charger closes moment, produce a burst pulse G, the output of monostable G output and B, C door form " or " signal is G+ BC, therefore starting shooting in a flash, charger makes battery discharging, simultaneously because G=" 0 ", A, B, C circuit are all answered " 0 ", and after discharge, the G=1 charger enters normal charging condition.
Because the size of the power supply capacity of pulse charger, directly determined the size of charger at pulse current charge exportable electric current between the time limit, output current is big more, charging interval is short more, in general power supply capacity is big more, its volume, weight, cost will account for more than 95% of total occupancy volume of charger, therefore the design of the power supply of pulse charger also is one of problem of very paying close attention in the charger design, 6 in order to reduce the volume and weight of power supply with reference to the accompanying drawings, general method is to improve the frequency of power supply, the present invention adopts the electronics wave chopping technology, waveform shear after the electrical network rectification is become the high frequency electric source ripple of 100HZ symmetry modulation, be transformed into the output voltage and the capacity of load request then by high frequency transformer, pass through high-frequency rectification and Filtering Processing again after, becoming DC level provides charger.
With reference to the accompanying drawings 5, electronic chopper is by the copped wave pulse generator, frequency is divided into the opposite two-way of phase place at 20-30KHZ and frequency divider, form AND output with the pulse of copped wave pulse generation generation again, the input coupling transformer, be divided into four the tunnel two groups, every group is the homophase triggering signal, two groups anti-phase each other, trigger bridge switching circuit respectively, be mutually two groups of (being F1, F2 and F1, F2) conductings of F switch element at diagonal angle, but do not allow the conducting simultaneously of all F switches, high frequency transformer is 1/10th of a ferromagnetic transformer.
After using the present invention, solved four problems in the charge in batteries: 1 because large current pulse charging has shortened the charging interval greatly; 2 carry out depolarising in charging process handles, and does not therefore produce bubble, has prolonged the useful life of storage battery greatly; 3 have eliminated the memory effect of storage battery; 4 can record storage battery does not contain polarizing voltage in terminal voltage electromotive force ε in real time in charging process, realized the charge in batteries full-automation.
Claims (5)
1, a kind of charging method of fast pulse charger of accumulator, it is characterized in that: adopt large current pulse charging, carrying out later rapid depolarization at each charging pulse handles, the width of charging pulse can be regulated according to the storage battery of different size, type, and depolarising is handled pulse duration and comprised and stop to charge pulsewidth τ
Fill, big current, narrow pulsed discharge pulsewidth τ
dAfter the discharge accumulator electric-quantity is detected pulsewidth τ with stopping
PutBe changeless.
2, a kind of fast pulse charger of accumulator, it is characterized in that charger is by the charging main circuit, charge power supply and charging pulse sequence circuit are formed, it is by charging pulse generator A and A, storage battery is by the electric power main circuit store electrical energy when A=" 1 ", when A=" 1 ", take out the edge, back by differential circuit when taking out the forward position of charging pulse or A=1 by differential circuit, make and handle polarization monostable circuit B and C enters operating state, by AND gate pulse tau is handled in depolarising then ' in isolate and stop to charge pulsewidth τ
Fill, electric pulsewidth τ is put and parked to big current, narrow pulsed discharge pulsewidth τ
Put, wherein the AND gate of B.C is output as discharge pulse width τ '
d, C is output as τ '
Put, C also is the signal of opening a sluice gate of electronic switching circuit, during C=" 1 ", and comparator P
1The terminal voltage of taking-up storage battery and the preset voltage of storage battery are compared, if P
1The upset of RS-1 trigger is Q=" 1 ", Q when being output as " 1 "
1=0, charger stops charging, otherwise continues charging, comparator P
2Be that battery cell case temperature and preset temperature are compared, RS-2 upset when surpassing preset temperature, Q
2=" 1 ", Q
2=0 can make charger stop charging equally.
3, fast pulse charger device according to claim 2, it is characterized in that: charger is provided with start monostable circuit G, closes in a flash when mains switch, produce a burst pulse G, the output of this pulse signal and BC door form " or " signal is that G+ BC makes and starts shooting in a flash that charger makes battery discharging, owing to G=" 0 ", A, B, C circuit are all resetted simultaneously.
4, fast pulse charger device according to claim 2 is characterized in that the charger power supply becomes the high frequency modulated power supply for the 50HZ power supply.
5, fast pulse charger device according to claim 2 is characterized in that transformer core is " 0 " type or " C " type ferrite in the electronic chopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01126621XA CN1172416C (en) | 2001-09-04 | 2001-09-04 | Fast pulse charger of accumulator and its charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01126621XA CN1172416C (en) | 2001-09-04 | 2001-09-04 | Fast pulse charger of accumulator and its charging method |
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| Publication Number | Publication Date |
|---|---|
| CN1338803A true CN1338803A (en) | 2002-03-06 |
| CN1172416C CN1172416C (en) | 2004-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01126621XA Expired - Fee Related CN1172416C (en) | 2001-09-04 | 2001-09-04 | Fast pulse charger of accumulator and its charging method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142699A (en) * | 2011-01-12 | 2011-08-03 | 肖相如 | Method for generating and controlling charging and discharging pulses of pulse charging device |
| CN102569927A (en) * | 2011-12-12 | 2012-07-11 | 华为技术有限公司 | Charging method for lithium ion battery, and charger |
| CN101635471B (en) * | 2008-07-24 | 2014-11-05 | 福特全球技术公司 | Method and device for detecting the operating state of a vehicle battery |
| CN104767002A (en) * | 2015-04-08 | 2015-07-08 | 深圳市禾望电气股份有限公司 | Storage battery charging and discharging method and device |
| CN110133516A (en) * | 2019-02-27 | 2019-08-16 | 延边中谷领创电力科技有限公司 | Battery charging and discharging device |
| WO2023148560A1 (en) * | 2022-02-02 | 2023-08-10 | Medtronic, Inc. | Apparatus for charging batteries |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008059489A2 (en) | 2006-11-13 | 2008-05-22 | Spectrum Dynamics Llc | Radioimaging applications of and novel formulations of teboroxime |
| RU2732901C1 (en) * | 2019-04-08 | 2020-09-24 | Владимир Наумович Земский | Charging method of accumulator |
-
2001
- 2001-09-04 CN CNB01126621XA patent/CN1172416C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635471B (en) * | 2008-07-24 | 2014-11-05 | 福特全球技术公司 | Method and device for detecting the operating state of a vehicle battery |
| CN102142699A (en) * | 2011-01-12 | 2011-08-03 | 肖相如 | Method for generating and controlling charging and discharging pulses of pulse charging device |
| CN102569927A (en) * | 2011-12-12 | 2012-07-11 | 华为技术有限公司 | Charging method for lithium ion battery, and charger |
| CN104767002A (en) * | 2015-04-08 | 2015-07-08 | 深圳市禾望电气股份有限公司 | Storage battery charging and discharging method and device |
| CN110133516A (en) * | 2019-02-27 | 2019-08-16 | 延边中谷领创电力科技有限公司 | Battery charging and discharging device |
| WO2023148560A1 (en) * | 2022-02-02 | 2023-08-10 | Medtronic, Inc. | Apparatus for charging batteries |
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| Publication number | Publication date |
|---|---|
| CN1172416C (en) | 2004-10-20 |
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