CN202949266U - Intelligent charger - Google Patents
Intelligent charger Download PDFInfo
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- CN202949266U CN202949266U CN2012206592574U CN201220659257U CN202949266U CN 202949266 U CN202949266 U CN 202949266U CN 2012206592574 U CN2012206592574 U CN 2012206592574U CN 201220659257 U CN201220659257 U CN 201220659257U CN 202949266 U CN202949266 U CN 202949266U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an intelligent charger. The charger comprises a soft start, an electro magnetic compatibility (EMC) filter circuit, a power factor correction (PFC) circuit, a resonance switching circuit, an AC/DC direct current output circuit, an auxiliary power supply (APS) circuit, a voltage and current acquisition circuit and a power management system, wherein the voltage and current acquisition circuit and the power management system are sequentially positioned between the AC/DC direct current output circuit and an output load, the voltage and current acquisition circuit acquires voltage and current signals of the AC/DC direct current output circuit and sends the signals to the power management system to perform comparison amplifying processing with an inside reference signal, the power management system outputs control signals in real time to adjust automatic switching between a pulse width modulation mode (PWM) and a pulse frequency modulation (PFM) mode. According to an embodiment of the intelligent charger, a novel intelligent control mode is introduced in a control circuit of the charger, so that a main power conversion circuit of the charger can achieve automatic switching between the PWM mode and the PFM mode.
Description
Technical field
The utility model relates to a kind of charger, particularly relates to a kind of intelligent charging machine.
Background technology
Charger is the product under the new forms of energy concept, be a kind ofly aim at electric automobile, charging pile, fill electrical changing station, the electric energy converting equipment of battery charging that the occasions such as power communication, railway aviation and wind-powered electricity generation energy storage are used, if can be divided into lead-acid battery charger, lithium cell charging machine, super capacitor charger etc. by the kind design of storage battery.The charge characteristic of lithium battery and lead-acid battery has a lot of similarities, can charge parameter be set according to the voltage of battery and capacity and charge; And the charge characteristic of super capacitor is more special, need to begin charging from DC0V, and charging current is larger, and required maximum charging voltage is in about DC850V, and charger is realizing that DC0V works the conversion that transfers to the DC850V high-voltage charging larger technical difficulty is arranged.
The super capacitor charger generally has 2 kinds of control models, is respectively PWM pulse width control and PFM arteries and veins and frequently controls two kinds of control models, and there is different control characteristics in they:
PWM pulse width control: PWM utilizes pulse duration (being the wide and narrow of control frequency) to control output, and pulse frequency is invariable; Can realize that DC0V plays accent, but efficient is low, the secondary commutation diode can't be realized soft switch conversion, peak voltage can occur when oppositely recovering, and for the selection of device, can only do low pressure series.
The PFM arteries and veins is controlled frequently: PFM is the variation of having of frequency and nothing, utilizes having or not of pulse to control output, and pulse duration is invariable; Can realize soft switch conversion, conversion efficiency is high, but when load is smaller, unstable, so be fit to do high pressure series.
Analyzing existing super capacitor charger, is generally at inside circuit, the 2 independent high-power charge power supplies of controlling of cover to be set, and a cover is controlled mode of operation for the pwm pulse width, begins to be the super capacitor charging when DC0V low pressure; Another set ofly be that the PFM pulse frequency controls mode of operation, can charge for super capacitor under high pressure conditions, allow two cover charge power supplies mutually change under the different operating state by the control system of separately establishing, complete super capacitor is transferred to DC850V from DC0V charging process.The sort circuit design cost is higher, controls also more complicated, and inner two power supplys need conversion in charging, and whole loop reaction speed is slower; The secondary commutation diode can't be realized soft switch, and stability and conversion efficiency are also relatively low, and the volume of product is larger, has limited to a certain extent the use of some occasions.
Because existing deficiency in above-mentioned existing circuit for charging machine design, the present utility model people is based on rich experiences and the relevant professional knowledge being engaged in this type of research and development of products design and accumulating for many years, the method of utilization science, positive research and innovation in addition, to designing a kind of Novel charging machine control circuit, can overcome the existing problem of existing circuit for charging machine design, make it have more advance.
Summary of the invention
the purpose of this utility model is, overcome traditional charger is difficult to realize PWM and two kinds of mode of operations of PFM in a cover control circuit automatic conversion, complete and transfer to the defective that the output voltage of the highest DC850V charges to super capacitor from DC0V, and provide a kind of novel intelligent charging machine, take full advantage of PWM pulse width control and PFM arteries and veins and frequently control the different control characteristics of two kinds of control models, exporting change according to load end, in time by acquisition system, the voltage and current signal that gathers being delivered to management system processes, in order to control the automatic conversion of PWM and two kinds of mode of operations of PFM, realize that 1 cover main power circuit can complete whole charging process to super capacitor.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.For achieving the above object, a kind of intelligent charging machine, it comprises soft start and EMC filter circuit, circuit of power factor correction, harmonic conversion circuit, AC/DC dc output circuit, auxiliary power circuit, it is characterized in that it also comprises:
Electric current and voltage Acquisition Circuit, power-supply management system, successively between AC/DC dc output circuit and output loading, the electric current and voltage Acquisition Circuit gathers the voltage and current signal of AC/DC dc output circuit, and with signal deliver to power-supply management system with in establish reference signal and compare and amplify to process, power-supply management system is exported the automatic conversion that control signal is regulated PWM and two kinds of mode of operations of PFM automatically in real time.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Better, aforesaid intelligent charging machine, wherein the power-supply management system of this intelligent charging machine more comprises output voltage test side, CPU administration module, output voltage test side feedback numerical value is to the CPU administration module, and the CPU administration module is exported the automatic conversion that control signal is regulated PWM and two kinds of mode of operations of PFM automatically in real time.
The utility model compared with prior art has obvious advantage and beneficial effect.By technique scheme, the utility model intelligent charging machine has following advantages and beneficial effect at least:
1, power volume is little, and is lightweight.。
2, power supply conversion efficiency is high, and primary switch pipe and secondary commutation diode operation are under the zero voltage switch state.
3, output voltage range is wide, can realize that DC0V-DC850V regulates.
4, control circuit fast response time, integrated power supply is realized two kinds of mode of operations, whole control loop fast response time.
5, the scope of application is wide, can use as Switching Power Supply; Can be to lead-acid battery, lithium cell charging; Can realize that DC0V rises transfers to DC850V super capacitor is charged.
In sum, the utility model utilizes PWM pulse width control and PFM arteries and veins frequently to control the different control characteristics of two kinds of control models, conversion by two kinds of patterns, can control power supply when load 20% is following, circuit working is in the full bridge PWM state, realize PWM control impuls width, regulate Duty ratio control DC0V and play accent; When output loading reaches 20% when above, circuit is automatically converted to LLC full-bridge PFM state, realizes PFM regulating impulse FREQUENCY CONTROL high-voltage charging.Realization in a cover control circuit by the automatic conversion of PWM and two kinds of mode of operations of PFM.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the each several part circuit function structural representation of the utility model intelligent charging machine.
Fig. 2 is the circuit structure diagram of a preferred embodiment of the utility model intelligent charging machine.
Fig. 3 is electric current and voltage Acquisition Circuit, the power-supply management system circuit function structural representation of a preferred embodiment of the utility model intelligent charging machine.
Embodiment
Be to reach technological means and the effect that predetermined utility model purpose is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of a kind of intelligent charging machine, structure, feature and the effect thereof that the utility model proposes, be described in detail as follows.
See also shown in Figure 1ly, be the each several part circuit function structural representation of the utility model intelligent charging machine, see also shown in Figure 2ly, be the circuit structure diagram of a preferred embodiment of the utility model intelligent charging machine.
It comprises soft start and EMC filter circuit 1, circuit of power factor correction 2, harmonic conversion circuit 3, AC/DC dc output circuit 4, auxiliary power circuit 5.In addition, this intelligent charging machine more comprises electric current and voltage Acquisition Circuit 6 and power-supply management system 7, they are successively between AC/DC dc output circuit and output loading, the electric current and voltage Acquisition Circuit gathers the voltage and current signal of AC/DC dc output circuit, and with signal deliver to power-supply management system with in establish reference signal and compare and amplify to process, power-supply management system is exported the automatic conversion that control signal is regulated PWM and two kinds of mode of operations of PFM automatically in real time.
See also shown in Figure 3ly, electric current and voltage Acquisition Circuit, power-supply management system circuit function structural representation for a preferred embodiment of the utility model intelligent charging machine wherein comprise output voltage test side 8 and CPU administration module 9.
Particularly, the working method of this intelligent charging machine is as follows:
If the maximum switching frequency of charger is 100KHz, the maximum duty cycle of PWM establishes 48%, controls two kinds of mode of operations by detecting the output end voltage current feedback to power supervisor, and specific works state and pattern transformational analysis are as follows:
A, output voltage test side 8 detects output loading lower than 20% the time, it is the full bridge PWM pulse width control that CPU administration module 9 is controlled the output services pattern, the constant 100KHz of switching frequency, simultaneously the current reference that sends of CPU administration module 9 is 20% of maximum current, guarantees that output loading when the PWM work pattern is less than or equal to 20%;
B, along with output loading increases gradually, PWM also increases thereupon, when output loading increased to 20%, this moment, the maximum duty cycle of PWM just reached maximum 48%, the constant 100KHz of switching frequency;
C, output voltage test side 9 detects the output load greater than 20% the time, and the pwm pulse width is controlled and finished, the constant order of sending PFM frequency modulation pattern at 48%, CPU administration module 9 of PWM maximum duty cycle, and circuit enters the PFM pulse frequency and regulates pattern; When output loading increased, switching frequency slowly descended from 100KHz;
The effect of each circuit:
Soft starting circuit and EMC filter circuit 1: Switching Power Supply is inner because large electrochemical capacitor filtering is arranged, and will draw a larger electric current powering up moment.This surge current may reach 1O times～100 times of power supply static working current.Surge current may cause the reduction of other input supply voltage, is enough to cause other power-equipment instant power-down that uses same input power.Therefore soft starting circuit can effectively be eliminated the surge current of Switching Power Supply input; The EMC filter circuit refers to that the charger operation that meets the requirements does not produce the ability of intolerable electromagnetic interference to any equipment in its environment in its electromagnetic environment.Therefore, EMC comprises the requirement of two aspects: refer to that on the one hand charger can not surpass certain limit value to the electromagnetic interference that the place environment produces in normal course of operation; Refer to that on the other hand charger has to a certain degree immunity to interference, i.e. electromagnetic susceptibility to the electromagnetic interference that exists in the environment of place.
Circuit of power factor correction 2: charger is inner because being that bridge rectifier and large capacitor filtering are realized the AC/DC conversion, due to the effect that discharges and recharges of filter capacitor, the ripple of sawtooth waveforms occurs slightly being at the direct voltage at its two ends.The input harmonic wave is larger, and the PF value is no more than 0.6, and the too low and current ramp too high levels of power factor not only can cause the huge waste of electric energy, and can produce severe contamination to electric power system, has influence on the electric circumstance of whole electric power system.Therefore after adding pfc circuit, can improve power quality, saves energy can improve the utilance of power consumption equipment, reduces the power loss of circuit.
Harmonic conversion circuit 3: be the main circuit of charger, it is with the direct current after the AC rectifying and wave-filtering, by power tube and transformer, Energy Transfer is arrived rear one-level, thereby realizes the charging to super capacitor.
AC/DC dc output circuit 4: the secondary output of transformer comes alternating component in the unidirectional pulsating voltage of rectifying and wave-filtering by the rectifier diode filter capacitor, makes it to become level and smooth direct voltage.
Electric current and voltage Acquisition Circuit 6: be the voltage and current signal of Real-time Collection charger output, then the voltage and current signal that collects delivered to power-supply management system and the preset reference signal is compared.
Power-supply management system 7: the data that are each Circuits System that will collect focus on, according to the corresponding control signal of internal preset program output.
Auxiliary power circuit 5: be to change the high-voltage variable after the AC/DC rectification into each chip IC required stable lower direct voltage, process and the power supply of state indicating section for whole charger input.
The advantage that this control circuit combines PWM and PFM, the conversion by two kinds of patterns realizes that DC0V plays accent, conversion efficiency is high, output voltage range is wide, power grade and power density advantages of higher.Can control power supply when load 20% is following, circuit working is realized PWM control impuls width in the full bridge PWM state, regulates Duty ratio control DC0V and plays accent; When output loading reaches 20% when above, circuit is automatically converted to LLC full-bridge PFM state, realizes PFM regulating impulse FREQUENCY CONTROL high-voltage charging.
the above, it is only preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. intelligent charging machine, it comprises soft start and EMC filter circuit, circuit of power factor correction, harmonic conversion circuit, AC/DC dc output circuit, auxiliary power circuit, it is characterized in that it also comprises:
Electric current and voltage Acquisition Circuit, power-supply management system, successively between AC/DC dc output circuit and output loading, the electric current and voltage Acquisition Circuit gathers the voltage and current signal of AC/DC dc output circuit, and with signal deliver to power-supply management system with in establish reference signal and compare and amplify to process, power-supply management system is exported the automatic conversion that control signal is regulated PWM and two kinds of mode of operations of PFM automatically in real time.
2. intelligent charging machine according to claim 1, is characterized in that described electric current and voltage Acquisition Circuit, and it more comprises the output voltage test side, and output voltage test side feedback numerical value is to power-supply management system.
3. intelligent charging machine according to claim 1 and 2, is characterized in that described power-supply management system, and it more comprises the CPU administration module, and the CPU administration module is exported the automatic conversion that control signal is regulated PWM and two kinds of mode of operations of PFM automatically in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206592574U CN202949266U (en) | 2012-12-04 | 2012-12-04 | Intelligent charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206592574U CN202949266U (en) | 2012-12-04 | 2012-12-04 | Intelligent charger |
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| CN202949266U true CN202949266U (en) | 2013-05-22 |
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| CN2012206592574U Expired - Lifetime CN202949266U (en) | 2012-12-04 | 2012-12-04 | Intelligent charger |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855779A (en) * | 2012-12-04 | 2014-06-11 | 洛阳嘉盛电源科技有限公司 | Intelligent charger |
| CN104795876A (en) * | 2015-04-28 | 2015-07-22 | 湖北三江航天万峰科技发展有限公司 | Intelligent charging device based on multi-resonant topology |
| CN107070228A (en) * | 2016-12-16 | 2017-08-18 | 东南大学 | A kind of plasma resonant vibration power-supply system based on optimal energy allocation |
| CN107196512A (en) * | 2017-06-21 | 2017-09-22 | 国电南瑞科技股份有限公司 | The wide range output control method of LLC resonant transform circuits |
| CN107645239A (en) * | 2017-10-10 | 2018-01-30 | 深圳市信电科技有限公司 | High drive power supply for air purifier capable of generating high-energy ions |
| WO2021134288A1 (en) * | 2019-12-30 | 2021-07-08 | Oppo广东移动通信有限公司 | Power supply device and charging control method |
-
2012
- 2012-12-04 CN CN2012206592574U patent/CN202949266U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855779A (en) * | 2012-12-04 | 2014-06-11 | 洛阳嘉盛电源科技有限公司 | Intelligent charger |
| CN104795876A (en) * | 2015-04-28 | 2015-07-22 | 湖北三江航天万峰科技发展有限公司 | Intelligent charging device based on multi-resonant topology |
| CN104795876B (en) * | 2015-04-28 | 2017-03-01 | 湖北三江航天万峰科技发展有限公司 | Intelligent charger based on multi-resonant topology |
| CN107070228A (en) * | 2016-12-16 | 2017-08-18 | 东南大学 | A kind of plasma resonant vibration power-supply system based on optimal energy allocation |
| CN107196512A (en) * | 2017-06-21 | 2017-09-22 | 国电南瑞科技股份有限公司 | The wide range output control method of LLC resonant transform circuits |
| CN107645239A (en) * | 2017-10-10 | 2018-01-30 | 深圳市信电科技有限公司 | High drive power supply for air purifier capable of generating high-energy ions |
| WO2021134288A1 (en) * | 2019-12-30 | 2021-07-08 | Oppo广东移动通信有限公司 | Power supply device and charging control method |
| US12021455B2 (en) | 2019-12-30 | 2024-06-25 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Power supply device and charging control method |
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Granted publication date: 20130522 |
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