CN202737550U - Intelligent battery charger - Google Patents
Intelligent battery charger Download PDFInfo
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- CN202737550U CN202737550U CN2012204158561U CN201220415856U CN202737550U CN 202737550 U CN202737550 U CN 202737550U CN 2012204158561 U CN2012204158561 U CN 2012204158561U CN 201220415856 U CN201220415856 U CN 201220415856U CN 202737550 U CN202737550 U CN 202737550U
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Abstract
Chargers in current market are single in charging mode and cannot satisfy requirements for charging batteries of different classifications and detect temperatures and capacities of the batteries. And charging curves of the chargers in the current market cannot be optimized. Therefore, problems of low charging efficiency and short service lifetimes of the batteries are caused. The intelligent battery charger provided by the utility model aims to make up defects of the prior art and provides an intelligent battery charger. The intelligent battery charger is a power source device inputting three-phase 380V power source, generating charging curves automatically according to different classifications and the capacities of the batteries, adopting a soft start converter and outputting changeable DC voltage and current with low power consumption and high efficiency. The power of the intelligent battery charger is 4.8 KW. The intelligent battery charger can satisfy charging requirements for the batteries of different classifications and having different capacities.
Description
Technical field
The utility model relates to a kind of intelligent battery charging machine, particularly is applicable to the battery of many kinds models such as plumbic acid, iron lithium, ni-mh, can be used for the charging of the battery of electric automobile power battery and other equipment.
Background technology
Domestic present charger factory is more, and the user object of most of producers is the legacy user, such as the automobile starting battery, forklift battery, battery vehicle battery, stored-program control exchange stand-by power supply battery, electric power operation power backup battery etc., but these and electric automobile power battery are all different.Its main circuit mainly contains Industrial Frequency Transformer rectifier type, voltage adjusting technology controlled by silicon control, switch power supply type etc.The charging curve that adopts has constant voltage, constant current, pulse, trickle etc.Mise-a-la-masse method has two-part, syllogic etc.These curves or independent the setting, or automatically press process flow operation.There is following defective in the tradition charger:
When 1) state of battery not being understood, can not detect judgement to battery, not know the How to choose charging modes.
2) unification of charge mode can not be satisfied the charging to many kinds battery.
3) can not detect temperature and the capacity of battery, can't optimize charging curve, poor efficiency or affect battery life causes charging.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art part, and a kind of intelligent battery charging machine is provided.It is a kind of input three-phase 380V power supply, according to the kind of battery and the difference of capacity, automatically generates charging curve, adopts soft switch transducer, and low-consumption high-efficiency is exported the supply unit of transformable direct voltage and electric current, power 4.8KW.It can satisfy the charging requirement of different types of battery and capacity.
The purpose of this utility model is achieved by the following technical measures: the intelligent battery charging machine, it comprises three-phase input rectifying filter circuit, electric power soft switch conversion circuit, single-chip microcomputer charging control and display control circuit, four parts such as voltage, electric current, temperature sensor testing circuit.The input of three-phase input rectifying filter circuit links to each other with the three phase supply power supply, and its output links to each other with the input of electric power soft switch conversion circuit.The output of electric power soft switch conversion circuit links to each other with battery pack, and its input control end links to each other with the output of single-chip microcomputer charging control circuit.The input of single-chip microcomputer charging control circuit links to each other with the output of sensor detection circuit.The input of sensor detection circuit links to each other with battery pack and electric power soft switch conversion circuit.
In technique scheme, three-phase input rectifying filter circuit is by three-phase breaker, three-phase contactor, and three-phase commutation bridge, current-limiting resistance, direct current relay, the elements such as input filter electrochemical capacitor form.
In technique scheme, sensor detection circuit is respectively by voltage sensor, current sensor, and temperature sensor forms, and they are respectively with power source charges voltage, charging current, battery temperature, the parameters such as radiator temperature send the single-chip microcomputer charging control circuit to.
In technique scheme, the single-chip microcomputer charging control circuit is the demonstration control core of this charger, it is by singlechip chip 80C51F040 and show that touch-screen OCM480I72T430 is that main element consists of, the signal of singlechip chip processes sensor testing circuit, thereby by controlling the variation of electric power soft switch conversion circuit control charging voltage and electric current.The demonstration touch-screen is made on the one hand charged state and is shown, also does on the other hand the man-machine interface setting of charge parameter by it.
In technique scheme, electric power soft switch conversion circuit comprises as the core of power conversion: control drive circuit, quasi-resonance high frequency conversion circuit, high frequency output current rectifying and wave filtering circuit.Control drive circuit by signal condition, dc bus over-current detection, pi regulator, resonance control chip UC3875, isolated drive circuit form, protective circuit.Quasi-resonance high frequency conversion circuit is comprised of four High Speed I GBT, resonant inductance, capacitance, high frequency transformers.The high frequency output current rectifying and wave filtering circuit is comprised of high-frequency rectification diode, output inductor, output capacitance.
The utility model is simple in structure, and perfect in shape and function compared with prior art has the following advantages:
1) charging modes can be selected the hand control and automation dual mode, and arranging of charge parameter can be set by touch-screen, and touch-screen can also show as charged state and fault.
2) by the selection to battery variety, can be to the charging of the multiple battery such as plumbic acid, iron lithium, ni-mh, a tractor serves several purposes is reduced expenses.
3) state of detection of dynamic battery: the parameters such as temperature, internal resistance, capacity, optimize charging curve, make the charging low-consumption high-efficiency, prolong battery.
Description of drawings
Fig. 1 is the integrated circuit theory diagram of the utility model intelligent battery charging machine.
Fig. 2 is three-phase input rectifying filter circuit schematic diagram among the utility model embodiment.
Fig. 3 is sensor detection circuit connection layout among the utility model embodiment.
Fig. 4 is single-chip microcomputer charging control circuit theory diagram among the utility model embodiment.
Fig. 5 is electric power soft switch conversion main circuit schematic diagram among the utility model embodiment.
Fig. 6 is soft switch conversion resonance control principle drawing among the utility model embodiment.
Fig. 7 is soft switch conversion IGBT driving circuit principle figure among the utility model embodiment.
Fig. 8 is soft switch conversion protection control principle drawing among the utility model embodiment.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of intelligent battery charging machine, it comprises three-phase input rectifying filter circuit, electric power soft switch conversion circuit, single-chip microcomputer charging control and display control circuit, four parts such as voltage, electric current, temperature sensor testing circuit.Take single-chip microcomputer charging control and presentation controller circuit as core, the signals such as the voltage by detecting battery, electric current, temperature, capacity, given and the feedback signal of control output power soft switch conversion circuit, thereby charging voltage and the electric current of the output of control soft switch conversion circuit.
As shown in Figure 2, in the filtering of described three-phase input rectifying, the effect of current-limiting resistance R1 is when contactor J1 start is closed, the charging current of restriction electrochemical capacitor C1, prevent the excessive damage rectifier bridge of electric current D1, when the voltage on the capacitor C 1 equated with the output voltage of three-phase bridge, direct current relay J2 moved closed, and current-limiting resistance R1 short circuit is excised.Normally closed auxiliary point and the R2 of J1 are connected in series, and purpose is when when shutdown, and J1 disconnects, and R2 auto parallel Connection access C1 discharges the remaining electricity of C1, as early as possible in order to device security.
As shown in Figure 3, in the described sensor detection circuit, comprise four road signals (two voltages, two electric currents), i.e. output voltage U f, cell voltage V
BT, output current If, converter bus current Ib.Its voltage sensor model is LV25-P, and the current sensor model is LA100-P.Two kinds of transducers all adopt magnetic balance type, can obtain higher precision and reach the faster reaction time.The data acquisition of the signals such as battery temperature, capacity, radiator temperature is finished by single chip machine controlling circuit.
As shown in Figure 4, in the described single-chip microcomputer charging control circuit, its function is by software analysis calculative determination constant voltage, constant current charging mode and charging numerical value.Take singlechip chip 80C51 as core (its inside comprises A/D and D/A function), input Uf, V
BT, If, the signals such as FAULT, temperature, capacity gather by DS18B20.Given signal Vg is produced by single-chip microcomputer D/A, and feedback signal Vf is finished by analog signal switch chip DG408 switched voltage Uf and electric current I f, respectively corresponding constant voltage and constant current mode.CAN communication chip CTM1050 is as external a kind of communication connected mode, can remote monitoring, show that touch-screen OCM480I72T430 shows that touch-screen makes on the one hand charged state and show, also does the man-machine interface setting of charge parameter on the other hand by it.
As shown in Figure 5, in the described electric power soft switch conversion main circuit, mainly comprise quasi-resonance high frequency conversion circuit, and the high frequency output current rectifying and wave filtering circuit.In the quasi-resonance high frequency conversion circuit, T1 ∽ T4 is high-frequency I GBT, and their parasitic capacitance and resonant inductance L1 form the quasi-resonance circuit jointly, operating frequency 20KHZ, the purpose of quasi-resonance circuit is to realize no-voltage, Zero Current Switch, i.e. soft switch reduces the switching loss of IGBT to greatest extent; C2 among the figure filters out the DC component in the circuit for exchanging capacitance, guarantees the high frequency transformer linear work; D5/C5/R5 among the figure is the busbar voltage peak absorbing circuit; High frequency transformer B2 makes a pair limit obtain suitable output high voltage by no-load voltage ratio.The purpose of high frequency output current rectifying and wave filtering circuit is that high frequency voltage is become direct voltage, and it is by high-frequency rectification diode D2, D3, high-frequency inductor L2, and output filter capacitor C3 forms; R6/C6/R7/C7 is the RC peak absorbing circuit of high-frequency rectification diode; Here, we have used full-wave rectifying circuit, and reason is because output voltage is lower, and full-wave rectifying circuit can make the conduction loss of high-frequency rectification diode minimum.
As shown in Figure 6, in the described soft switch conversion resonance control, it comprises that 555 timer chips and resonance Phase control IC UC3875 form, and 555 mainly play fixed frequently effect, and the effect of UC3875 is according to the control signal phase shift, namely export four full-bridge IGBT control impuls OUTA/B/C/D, these four groups of signal frequencies are identical, but phase place is different, and phase place is adjustable, by this phase shift system, can realize the soft switch of IGBT.
As shown in Figure 7, described IGBT drive circuit is a road in four road IGBT drive circuits.Signal altogether will amplify through signal shaping, and unipolarity turns the bipolarity power amplifier, and driving transformer three parts form.TPS2812 is a kind of IGBT low-power drive circuit, and it has the effect of waveform shaping and amplification concurrently.11T1-11T4 is two pairs of totem switch triodes, mainly is polarity conversion and power amplification, is 1: 1 isolation drive transformer at last.The largest benefit of sort circuit is to omit 8 tunnel isolation drive power supplys.
As shown in Figure 8, described electric power soft switch transducer protection control circuit comprises dc bus overcurrent, output overcurrent, three kinds of protections of radiator excess temperature, has only provided the typical circuit of dc bus overcurrent among the figure.U10 is the comparator chip, it with the dc bus sensor signal and fixedly set point make comparisons, when greater than set point; U10 upset output " 0 ", trigger U111 is with signal latch, and LED shows on the one hand; also block in addition the UC3875 chip, inhibit pulse output reaches the shutdown purpose.In addition, output overcurrent, processing mode is identical therewith for two kinds of protective circuits of radiator excess temperature.
In sum, every technical performance of the utility model power amplifier is as follows:
1, input voltage: (three-phase five-wire mode) AC380V ± 10%; 50-60Hz ± 10%
2, constant voltage output: DC 2-48V; Potentiometer or numeral arrange, and be adjustable continuously.Maximum power 4.8KW.
3, constant current output: DC 0-100A; Potentiometer or numeral arrange, and be adjustable continuously.Maximum power 4.8KW.
4, output ripple :≤1% (being fully loaded with)
5, voltage stabilization precision :≤0.5%; Current stabilization precision :≤1%
7, operating efficiency: (be applied to vehicle-mounted, during output voltage 200-400VDC) 〉=90%
8, operating state: can keep long-term work and single charge
9, safety index: the insulation resistance 〉=withstand voltage 1500V/min of 200M Ω
10, charge mode: manually+automatically
11, have charging voltage, electric current, charged state, demonstration and setting parameter function.
11, has overcurrent, short circuit, battery reversal connection, overheat protector, fault alarm and Presentation Function.
12, the type of cooling: air-cooled
13, volume: 400 * 335 * 260 (mm)
14, weight: 15kg
Claims (6)
1. intelligent battery charging machine, it is characterized in that: it comprises that the single-chip microcomputer charging control circuit is with the parameter setting information COMPREHENSIVE CALCULATING of signal and the touch-screen of sensor detection circuit, produce the control signal of charging voltage and electric current, control electric power soft switch conversion circuit makes it to export corresponding charging voltage and charging current; The power input of electric power soft switch conversion circuit links to each other with the output of three-phase input rectifying filter circuit, the control signal input of electric power soft switch conversion circuit links to each other with the output of single-chip microcomputer charging control circuit, and the power take-off of electric power soft switch conversion circuit links to each other with battery pack.
2. intelligent battery charging machine according to claim 1 is characterized in that: the signal condition that the control drive circuit in the electric power soft switch conversion circuit comprises, pi regulator, resonance control chip UC3875 circuit; The charging voltage that is provided by the single-chip microcomputer charging control circuit, given value of current signal Vg, Vf are behind the signal conditioning circuit that the OP07 chip forms, carrying out PI through an OP07 chip again regulates, offer at last resonance chip UC3875N, produce four resonance phase shift signals by it and export to isolated drive circuit.
3. intelligent battery charging machine according to claim 1, it is characterized in that: the isolated drive circuit that the control drive circuit in the electric power soft switch conversion circuit comprises is to be the drive circuit of core by the TPS2812 chip circuit, into bipolar signal output and power amplification are changed the unipolar signal of input in its inside, then utilize the unipolarity power supply that bipolar signal power is amplified again by two pairs of switch triodes, export to the former limit of driving transformer, the limit output of paying of driving transformer links to each other with the grid of IGBT; IGBT has four in this circuit, and its grid drives independently power supply of these needs eight tunnel, and the grid that this drive circuit only needs one tunnel altogether single supply just can solve four IGBT drives the problem of needs eight road independent current sources.
4. intelligent battery charging machine according to claim 1, it is characterized in that: the protective circuit that the control drive circuit in the electric power soft switch conversion circuit comprises is comprised of converter dc bus overcurrent, output current overcurrent, three kinds of protective circuits of radiator excess temperature; Over-current signal is produced behind comparator LM311 chip by current sensor signal If, Ib and the threshold value that can arrange, and radiator excess temperature signal is produced by the temperature relay action of often opening; These three kinds of signals latch after by trigger chip CD4044 automatically, block at last the drive circuit of resonance chip UC3875N circuit and TPS2812 chip.
5. intelligent battery charging machine according to claim 1, it is characterized in that: the single-chip microcomputer charging control circuit is the demonstration control core of this charger, it is by singlechip chip 80C51F040 and show that touch-screen OCM480I72T430 is that main element consists of, the signal of singlechip chip processes sensor testing circuit, comprise voltage, electric current, capacity, temperature etc., thereby give the variation of control electric power soft switch conversion circuit control charging voltage and electric current by output Vg, Vf; The demonstration touch-screen is made on the one hand charged state and is shown, also does on the other hand the man-machine interface setting of charge parameter by it; Externally communication uses CAN bus chip CTM1050 to realize.
6. intelligent battery charging machine according to claim 1 is characterized in that: the single-chip microcomputer charging control circuit is the demonstration control core of this charger, it to the temperature sampling of battery by using the DS18B20 chip to realize, simple, accurately, reliable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204158561U CN202737550U (en) | 2012-08-21 | 2012-08-21 | Intelligent battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204158561U CN202737550U (en) | 2012-08-21 | 2012-08-21 | Intelligent battery charger |
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| Publication Number | Publication Date |
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| CN202737550U true CN202737550U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204158561U Expired - Fee Related CN202737550U (en) | 2012-08-21 | 2012-08-21 | Intelligent battery charger |
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| Country | Link |
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| CN (1) | CN202737550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI565189B (en) * | 2015-08-06 | 2017-01-01 | 瑞洲電裝有限公司 | Charging device and charging method thereof |
| CN106849255A (en) * | 2017-03-10 | 2017-06-13 | 江苏捷高智能科技有限公司 | A kind of intelligent charging machine and its charging method |
-
2012
- 2012-08-21 CN CN2012204158561U patent/CN202737550U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI565189B (en) * | 2015-08-06 | 2017-01-01 | 瑞洲電裝有限公司 | Charging device and charging method thereof |
| CN106849255A (en) * | 2017-03-10 | 2017-06-13 | 江苏捷高智能科技有限公司 | A kind of intelligent charging machine and its charging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: WUHAN HANGJIU ELECTRIC Co.,Ltd. Assignor: WUHAN NEWROCK ELECTRIC TECHNOLOGY Co.,Ltd. Contract record no.: 2014420000145 Denomination of utility model: Intelligent battery charger Granted publication date: 20130213 License type: Exclusive License Record date: 20140716 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210821 |