CN110311459A - A kind of battery charging and discharging device - Google Patents

A kind of battery charging and discharging device Download PDF

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Publication number
CN110311459A
CN110311459A CN201910600376.9A CN201910600376A CN110311459A CN 110311459 A CN110311459 A CN 110311459A CN 201910600376 A CN201910600376 A CN 201910600376A CN 110311459 A CN110311459 A CN 110311459A
Authority
CN
China
Prior art keywords
battery
output
voltage
control circuit
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910600376.9A
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Chinese (zh)
Inventor
朱晓亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Cambrian New Energy Technology Co Ltd
WUXI YOUDIAN SCIENCE & TECHNOLOGY Co Ltd
Original Assignee
Changzhou Cambrian New Energy Technology Co Ltd
WUXI YOUDIAN SCIENCE & TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Cambrian New Energy Technology Co Ltd, WUXI YOUDIAN SCIENCE & TECHNOLOGY Co Ltd filed Critical Changzhou Cambrian New Energy Technology Co Ltd
Priority to CN201910600376.9A priority Critical patent/CN110311459A/en
Publication of CN110311459A publication Critical patent/CN110311459A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel

Abstract

The invention discloses a kind of battery charging and discharging devices, including AC/DC transfer circuit and bidirectional direct current converter, the input terminal of the AC/DC transfer circuit receives alternating current, electric energy is provided to load and bidirectional direct current converter after transformation of electrical energy, bidirectional direct current converter charges to the battery of its other end connection after receiving the electric energy, after the alternating current power failure, the battery powers to the load by the bidirectional direct current converter.The present invention realizes the automatic switchover of battery charging and discharging, and can be realized daily battery charging maintenance.

Description

A kind of battery charging and discharging device
Technical field
The present invention relates to switch power technology fields, and in particular to the charge and discharge device of energy-storage battery.
Background technique
For continual power input can be provided to key equipments such as real-time information collection or real-time control units, Using alternating current as outside main power source, can also provide backup power source, one of most common backup power source is energy-storage battery.? In actual use, it needs to charge in time for it when the not enough power supply of energy-storage battery;After alternating current power down, energy-storage battery is needed It to discharge in time and provide electric energy for key equipment.It thus needs to design a kind of circuit, automatic inflatable can be carried out to energy-storage battery Fulgurite reason.
Summary of the invention
The present invention exactly thinks and in this, provides a kind of battery charging and discharging device, carries out auto charge and discharge management to battery.
A kind of battery charging and discharging device, including,
AC/DC transfer circuit, the input terminal of the AC/DC transfer circuit connect alternating current, and output end connection is negative It carries,
Bidirectional direct current converter, one end of the bidirectional direct current converter are defeated with the AC/DC transfer circuit Outlet connection, the other end are connect with battery.
Above-mentioned battery charging and discharging device further includes drive control circuit, and the drive control circuit is bidirectional, dc change The switch changed in circuit provides driving signal.
Above-mentioned drive control circuit includes,
Battery voltage detection circuit, the battery voltage detection circuit detect the voltage of the battery, and export battery electricity Sampled signal is pressed,
Battery constant-voltage control circuit, the battery constant-voltage control circuit form first according to the battery voltage sampling signal Signal is controlled, the first control signal controls the bidirectional direct current converter and carries out constant-voltage charge control to the battery, The battery constant-voltage control circuit is proportional and integral controller.
Above-mentioned drive control circuit further includes,
Battery current detection circuit, the electric current of the battery is flowed through in the battery current detection circuit detection, and exports electricity Pond current sampling signal,
Charge constant-current control circuit, and the charging constant-current control circuit forms second according to the battery current sampled signal Signal is controlled, the second control signal controls the bidirectional direct current converter and carries out constant-current charge to the battery, described Charging constant-current control circuit is proportional and integral controller.
Above-mentioned drive control circuit further includes,
Output voltage detecting circuit, the output voltage detecting circuit detect the voltage of the load, and output loading electricity Sampled signal is pressed,
Constant-voltage control circuit is exported, the output constant-voltage control circuit forms third according to the load voltage sampled signal Signal is controlled, the output voltage that the third control signal controls the bidirectional direct current converter is constant, the output constant pressure Control circuit is proportional and integral controller.
Above-mentioned drive control circuit further includes first choice switch, the first choice switch selection output the first control letter Number or second control signal.
Above-mentioned first choice switch includes first diode and the second diode, the output of the battery constant-voltage control circuit End is connect with the cathode of first diode, and the output end of the charging constant-current control circuit is connect with the cathode of the second diode, The anode of the first diode and second diode is connected in parallel, and the anode of second diode is first choosing Select the output end of switch.
Above-mentioned drive control circuit further includes controllable selection switch, the first input end of the controllable selection switch with it is described The connection of the output end of first choice switch, the second input terminal is connect with the output end of the output constant-voltage control circuit, described The output end and driving control signal of controllable selection switch, the driving control signal are converted into driving letter through overdrive circuit Number.
Above-mentioned drive control circuit further includes exchange input detecting circuit, and the exchange input detecting circuit detects the friendship The output voltage of galvanic electricity, and exchange power detection signal is exported, the control terminal of controllable selection switch receives the exchange electro-detection letter Number, when the alternating current has electricity, the output end of controllable selection switch is connect with first input end, when the alternating current power failure, institute The output end for stating controllable selection switch is connect with the second input terminal.
The present invention realizes the automatic switchover of the charging and discharging of battery, and can be realized the daily maintenance of battery, guarantees Battery can normally have electricity.
For allow invention features described above and advantage can be clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings make Detailed description are as follows.
Detailed description of the invention
Fig. 1 is the block diagram of charge and discharge device of the present invention.
Fig. 2 is the block diagram for the charge and discharge device that the present invention contains drive control circuit.
Fig. 3 is a specific embodiment of bidirectional, dc control circuit in Fig. 2.
Fig. 4 is the specific embodiment that input detecting circuit is exchanged in Fig. 2.
Specific embodiment
To keep purpose and the technical solution of the embodiment of the present invention clearer, below in conjunction with the attached of the embodiment of the present invention Figure, is clearly and completely described the technical solution of the embodiment of the present invention.Obviously, described embodiment is of the invention A part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of being not necessarily to creative work.
As shown in Figure 1, a kind of battery charging and discharging device include alternating current 11, it is AC/DC transfer circuit 13, battery 12, double To DC transfer circuit 14 and load 15, the alternating current 11 is connect with the input terminal of the AC/DC transfer circuit 13, institute The output end for stating AC/DC transfer circuit 13 is connect with the input terminal of the load 15, the battery 12 and the bidirectional, dc The input terminal of translation circuit 14 connects, the output end of the bidirectional direct current converter 14 and the AC/DC transfer circuit 13 Output end be connected in parallel.
Specifically, alternating current 11 is, for example, alternating current, when alternating current 11 has electricity, the AC/DC transfer circuit 13 will be handed over The AC energy vin1 of the input of galvanic electricity 11 is transformed to direct current energy Vout and is supplied to load 15.Voltage at 12 both ends of battery is low When voltage setting value Vset, the input that the bidirectional direct current converter 14 receives the direct current energy Vout is the electricity It charges in pond 12.After 11 power down of alternating current, the battery 12 is that the load 15 mentions by bidirectional direct current converter 14 For the direct current energy Vout.Battery charging and discharging device of the invention realizes the automatic charging process and automatic discharging mistake of battery Journey.
As shown in Fig. 2, charge and discharge device of the invention further includes drive control circuit 26, the drive control circuit 26 is The bidirectional direct current converter 24 provides driving signal S7, and the driving signal S7 controls the bidirectional direct current converter 24 In switch opening or turn off.The drive control circuit 26 includes: battery voltage detection circuit 261, detects battery 22 Voltage, and export battery voltage detection signal S1.Battery constant-voltage control circuit 262 receives the battery voltage detection signal The S1 and voltage setting value Vset (being not shown), and output control signal S1 ' after adjusted operation.It is described Battery constant-voltage control circuit 262 is, for example, the letter such as proportional controller, pi controller or proportional integral derivative controller Number controller.Battery current detection circuit 263 detects the electric current for flowing through battery 22, and exports battery current detection signal S2, fills Electric constant-current control circuit 264 receives the battery current detection signal S2 and current setting value Iset (being not shown), and Output control signal S2 ' after adjusted operation.The constant-current control circuit 264 that charges is, for example, proportional controller, ratio product The signal controllers such as sub-controller or proportional integral derivative controller.The output end of the battery constant-voltage control circuit 262 with The cathode connection of diode D1 in switch 2610 is selected, the output end of the charging constant-current control circuit 264 and selection switch The cathode connection of diode D2 in 2610, the diode D1 and D2 anode are connected in parallel.When the voltage of the battery 22 is lower than When voltage setting value Vset, the controller in the battery constant-voltage control circuit 262 is saturated, the voltage of output control signal S1 ' So that diode D1 ends, the output of the constant-current control circuit 264 control signal S2 ' that charges at this time is exported by diode D2, described Signal S2 ' is controlled through the switch in 269 drive control bidirectional direct current converter 24 of overdrive circuit, is carried out for the battery 22 Constant-current charge.After the voltage of the battery 12 reaches voltage setting value Vset, the electric current for flowing through battery 22 is also accordingly reduced to Less than current setting value Iset, the controller saturation for the constant-current control circuit 264 that charges, output control signal S2 ' makes diode Diode D1 is connected in D2 cut-off, the control signal S1 ' that the battery constant-voltage control circuit 262 exports, the control signal S1 ' is through the switch in 269 drive control bidirectional direct current converter 24 of overdrive circuit, so that the both end voltage of battery 22 maintains In setting value.Charging unit of the invention can carry out maintenance to battery and guarantee that battery has electricity in real time, and will not be overcharged.
The output voltage detecting circuit 265 detects the voltage at 25 both ends of the load, obtains voltage sense signal S3, output constant-voltage control circuit 266 receives the voltage sense signal S3, and control is exported after adjusted operation Signal S3 ' carries out output voltage Isobarically Control.Exporting constant-voltage control circuit 266 is, for example, proportional controller, proportional plus integral control The signal controllers such as device or proportional integral derivative controller.
The drive control circuit 26 further includes controllable selection switch 267, by the output for exchanging input detecting circuit 268 Signal controls the output of the controllable selection switch 267, and the exchange input detecting circuit 268 detects whether alternating current 21 has Electricity, alternating current 21 have electricity, and the level of the exchange input detecting circuit 268 output exchange power detection signal S4 is high level, institute The output end for stating controllable selection switch is connect with terminals P 1, and the terminals P 1 is connect with the output end of selection switch 2610;Exchange The level of electric 21 power down, the exchange input detecting circuit 268 output exchange power detection signal S4 is low level, the controllable choosing The output end for selecting switch is connect with terminals P 2, and the terminals P 2 is connect with the output end of output constant-voltage control circuit 266.By can Control selection switch 267 realizes charge and discharge device in the automatic switchover being charged and discharged between two modes.
Fig. 3 is a kind of specific embodiment of bidirectional direct current converter 24 of the present invention, two-way straight described in the present embodiment Stream translation circuit is a two-way BUCK-BOOST circuit, including inductance L1, switch Q1 and Q2, drive control circuit described in Fig. 2 26 driving signal S7 namely turning on and off for control switch Q1 and Q2.It is described two-way straight in 11 power down of alternating current Translation circuit work and BOOST pattern conversion are flowed, load 25 will be supplied to after the electric energy boosting inverter of battery 22, and use output Constant-voltage control circuit 266 control the bidirectional direct current converter 24 be supplied to it is described load 25 voltage it is constant.
When the alternating current 21 does not have power down, the bidirectional direct current converter 34 works in BUCK pattern conversion, The DC power output Vout for receiving the AC/DC transfer circuit 23 charges after decompression transformation for battery 22, in electricity When the voltage in pond 22 is lower, battery 22 is in undersaturated condition, and battery constant-voltage control circuit 262 is saturated, and the diode D1 is cut Only, it is constant electric current that the charging constant-current control circuit 264, which controls the output of the bidirectional direct current converter 24, thus right The battery 22 charges, when 22 voltage of battery reach setting value namely battery i.e. will be fully charged when, flow through battery 22 Electric current reduce, be lower than current setting value Iset, so that charging constant-current control circuit 264 is saturated, output voltage increases, diode D2 cut-off, the voltage of battery 32 increases reach setting value after, the output voltage of battery constant-voltage control circuit 262 reduces, so that two Pole pipe D1 conducting, the output signal of the battery constant-voltage control circuit 262 come into force, at this moment 26 switching control mode of control circuit, Isobarically Control is carried out to the battery 22, and it is conserved.
Fig. 4 is the specific embodiment of voltage detecting circuit 268 of the present invention, the terminal A of the voltage detecting circuit 268 and friendship The output end of galvanic electricity 11 connects, and carries out voltage sample, and after the rectified circuit 2681 of the voltage signal sampled is rectified, output is extremely Bleeder circuit 2683, the bleeder circuit 2683 are composed in series by resistance R2 and R3, the intermediate ends and switch of bleeder circuit 2683 The grid of Q3 connects, and the source electrode of the switch Q3 is connect with ground terminal, drains and connect with the primary side of optocoupler T1, and the of the secondary side of optocoupler One end is connect with the intermediate ends of resistance R4 and the R5 bleeder circuit formed, and the resistance R4 and R5 divides accessory power supply VCC2 Pressure, the second end of the optocoupler T1 are connect with ground terminal.When the alternating current 11 has electricity, switch Q3 grid is high level, described to open Q3 conducting is closed, the first end and second end on the secondary side of the optocoupler T1 disconnects, and the output end DIR's of voltage detecting circuit 268 is defeated Signal S4 is high level out, and the signal S4 control switching switch 267 switches to output terminal P1, is carried out to the battery 22 Charge maintenance control, when 11 power down of alternating current, the grid voltage of switch Q3 is zero, and switch Q3 ends, the optocoupler T1's The first end and second end on secondary side is connected, and output signal S4 is low level.The signal S4 control switching switch 267 switches to Output terminal P2 carries out control of discharge to the battery 22.
The present invention realizes battery and automatically switches in charge and discharge quality inspection, while can also realize the daily dimension of battery Shield, avoids over-charging of battery or over-discharge.
Although the present invention has been disclosed by way of example above, it is not intended to limit the present invention., any technical field Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, thus it is of the invention Protection scope should be defined by the scope of the appended claims.

Claims (10)

1. a kind of battery charging and discharging device, which is characterized in that including,
AC/DC transfer circuit, the input terminal of the AC/DC transfer circuit connect alternating current, output end connection load;
Bidirectional direct current converter, the output end of one end of the bidirectional direct current converter and the AC/DC transfer circuit Connection, the other end are connect with battery;
Controllable selection switch, the controllable selection switch select the bidirectional direct current converter according to the state of the alternating current Operating mode.
2. a kind of battery charging and discharging device as described in claim 1, which is characterized in that the battery charging and discharging device further includes driving Dynamic control circuit, the drive control circuit provide driving signal for the switch in the bidirectional direct current converter.
3. a kind of battery charging and discharging device as claimed in claim 2, which is characterized in that the drive control circuit includes:
Battery voltage detection circuit, the battery voltage detection circuit detect the voltage of the battery, and export cell voltage and adopt Sample signal;
Battery constant-voltage control circuit, the battery constant-voltage control circuit form the first control according to the battery voltage sampling signal Signal, the first control signal controls the bidirectional direct current converter and carries out constant-voltage charge control to the battery, described Battery constant-voltage control circuit is proportional and integral controller.
4. a kind of battery charging and discharging device as claimed in claim 3, which is characterized in that the drive control circuit further includes,
Battery current detection circuit, the electric current of the battery is flowed through in the battery current detection circuit detection, and exports battery electricity Flow sampled signal:
Charge constant-current control circuit, and the charging constant-current control circuit forms the second control according to the battery current sampled signal Signal, the second control signal control the bidirectional direct current converter and carry out constant-current charge, the charging to the battery Constant-current control circuit is proportional and integral controller.
5. a kind of battery charging and discharging device as claimed in claim 4, which is characterized in that the drive control circuit further includes,
Output voltage detecting circuit, the output voltage detecting circuit detects the voltage of the load, and output loading voltage is adopted Sample signal,
Constant-voltage control circuit is exported, the output constant-voltage control circuit forms third according to the load voltage sampled signal and controls Signal, the output voltage that the third control signal controls the bidirectional direct current converter is constant, the output Isobarically Control Circuit is proportional and integral controller.
6. a kind of battery charging and discharging device as claimed in claim 5, which is characterized in that the drive control circuit further includes first Selection switch, the first choice switch selection output first control signal or second control signal.
7. a kind of battery charging and discharging device as claimed in claim 6, which is characterized in that the first choice switch includes the one or two Pole pipe and the second diode, the output end of the battery constant-voltage control circuit and the cathode of first diode connect, the charging The output end of constant-current control circuit is connect with the cathode of the second diode, the sun of the first diode and second diode Pole is connected in parallel, and the anode of second diode is the output end of first choice switch.
8. a kind of battery charging and discharging device as claimed in claim 6, which is characterized in that the controllable selection switch, it is described controllable Select the connection of the first input end of switch and the output end of first choice switch, the second input terminal and the output constant pressure The output end of control circuit connects, and the output end output driving of the controllable selection switch controls signal, the drive control letter Number driving signal is converted into through overdrive circuit.
9. a kind of battery charging and discharging device as claimed in claim 7, which is characterized in that the drive control circuit further includes exchange Input detecting circuit, the exchange input detecting circuit detect the output voltage of the alternating current, and export exchange electro-detection letter Number.
10. a kind of battery charging and discharging device as claimed in claim 9, which is characterized in that the control terminal of the controllable selection switch The exchange power detection signal is received, when the alternating current has electricity, the output end of controllable selection switch is connect with first input end, When the alternating current power failure, the output end of the controllable selection switch is connect with the second input terminal.
CN201910600376.9A 2019-07-04 2019-07-04 A kind of battery charging and discharging device Pending CN110311459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910600376.9A CN110311459A (en) 2019-07-04 2019-07-04 A kind of battery charging and discharging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910600376.9A CN110311459A (en) 2019-07-04 2019-07-04 A kind of battery charging and discharging device

Publications (1)

Publication Number Publication Date
CN110311459A true CN110311459A (en) 2019-10-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101355260A (en) * 2008-09-17 2009-01-28 中国航天时代电子公司第七七一研究所 Transformation controller for charging and discharging lithium ion accumulator as well as transformation control method thereof
CN101707389A (en) * 2009-11-17 2010-05-12 北京唐智科技发展有限公司 Redundant fault-tolerant system and fault-tolerant regulating and controlling method of UPS power supply system in IDC machine room
CN102570582A (en) * 2010-12-10 2012-07-11 深圳市凯旺电子有限公司 Multi-purpose intelligent power module
JP2019050652A (en) * 2017-09-08 2019-03-28 株式会社東芝 Power conversion device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101355260A (en) * 2008-09-17 2009-01-28 中国航天时代电子公司第七七一研究所 Transformation controller for charging and discharging lithium ion accumulator as well as transformation control method thereof
CN101707389A (en) * 2009-11-17 2010-05-12 北京唐智科技发展有限公司 Redundant fault-tolerant system and fault-tolerant regulating and controlling method of UPS power supply system in IDC machine room
CN102570582A (en) * 2010-12-10 2012-07-11 深圳市凯旺电子有限公司 Multi-purpose intelligent power module
JP2019050652A (en) * 2017-09-08 2019-03-28 株式会社東芝 Power conversion device

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