CN104269898A - Charging unit of super capacitor - Google Patents
Charging unit of super capacitor Download PDFInfo
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- CN104269898A CN104269898A CN201410494055.2A CN201410494055A CN104269898A CN 104269898 A CN104269898 A CN 104269898A CN 201410494055 A CN201410494055 A CN 201410494055A CN 104269898 A CN104269898 A CN 104269898A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- Dc-Dc Converters (AREA)
Abstract
The invention relates to the technical field of charging of a super capacitor. A charging unit of the super capacitor comprises an input circuit, a direct current conversion circuit, a pre-charging control circuit, a voltage feedback circuit and a current feedback circuit, wherein the direct current conversion unit is used for carrying out direct current conversion on direct current voltage, when the current voltage of the super capacitor is lower than a preset value, a constant current and constant voltage circuit can not meet the work condition, and the pre-charging control circuit controls PWM signals to charge the capacitor so that the voltage value of the capacitor can reach a first preset value. The current feedback circuit enables the direct current conversion circuit to carry out constant current charging on the capacitor and enables the voltage value of the capacitor to reach a second preset value. The voltage feedback circuit enables the direct current conversion circuit to carry out constant voltage charging on the capacitor. The charging method realizes rapid charging of the super capacitor, does not generate a self-excitation phenomenon and improves the current sampling accuracy and the anti-jamming capability.
Description
Technical field
The present invention relates to capacitor charging technical field, particularly relate to a kind of charging device of super capacitor.
Background technology
At present, in the technical scheme that bulky capacitor is charged, the module that a kind of technical scheme provides for adopting chip supplier, but the price of this module is higher; Another kind of technical scheme is charged to electric capacity for adopting series diode and resistance, the shortcoming of this technical scheme is the situation being only suitable for small area analysis, when adopting the current charges of more than 1A, the caloric value of current-limiting resistance can be made excessive, be not suitable for long-time charging.The third technical scheme detects electric current by series resistance, and amplify voltage multiplication by operational amplifier, composition constant pressure and flow circuit, as shown in Figure 1, in the circuit, control chip, inductance L 1 and diode D1 form conventional DC-DC voltage conversion circuit, and sampling resistor RCS, amplifier LM321 and diode DZ1 forms constant current feedback circuit, the shortcoming of this circuit is the circuit that sampling resistor RCS and amplifier LM321 form is low-side current sample circuit, the current precision of sampling is low, cause constant current accuracy low, and, amplifier LM321 is due to two ends parallel resistance R13 and R14, what cause between amplifier LM321 and sampling resistor RCS is distant, this kind of wire laying mode is easy to produce self-excitation phenomena.In sum, there is the low problem causing constant current accuracy low of current precision owing to adopting low-side current sampling circuit samples in prior art.
Summary of the invention
The object of the present invention is to provide a kind of charging device of super capacitor, being intended to solve the low problem causing constant current accuracy low of current precision owing to adopting low-side current sampling circuit samples for existing in prior art.
The present invention is achieved in that a kind of charging device of super capacitor, comprises input circuit, precharge control circuit, DC converting circuit, voltage feedback circuit and current feedback circuit;
Described input circuit is used for described DC converting circuit input direct voltage;
Described DC converting circuit is used for carrying out direct current conversion to described direct voltage, and charges to described super capacitor;
Described precharge control circuit is when being less than the first preset value when the output voltage of DC converting circuit, described DC converting circuit is made to carry out pulse current charge to described super capacitor, until make the magnitude of voltage of described super capacitor reach the first preset value to described DC converting circuit input pwm control signal;
Described current feedback circuit gathers the output current of described DC converting circuit, and convert described output current to first feedback voltage, described first feedback voltage is exported to described DC converting circuit, makes described DC converting circuit carry out constant current charge to described super capacitor and make the magnitude of voltage of described super capacitor reach the second preset value;
The voltage that described voltage feedback circuit gathers DC converting circuit output obtains the second feedback voltage, and described second feedback voltage is exported to described DC converting circuit, makes described DC converting circuit carry out constant voltage charge to described super capacitor.
Described current feedback circuit comprises current sampling resistor, current mirror and photovoltaic conversion circuit;
Described current sampling resistor is between described DC converting circuit and described electric capacity;
Described current mirror gathers the output current of described DC converting circuit by described current sampling resistor, and the electric current of collection is sent to described voltage conversion circuit;
The current conversion that described current mirror exports is become the first feedback voltage by described voltage conversion circuit, and described first feedback voltage is sent to described DC converting circuit.
Described current feedback circuit also comprises the first diode and the second diode, the anode of described first diode connects the anode of described second diode and the output of described voltage conversion circuit, and the negative electrode of described first diode connects the negative electrode of described second diode and the pressure feedback port of described direct current transducer.
Described precharge control circuit comprises the first electrochemical capacitor, switching tube and the first resistance, the charging input end of the just very described precharge control circuit of described first electrochemical capacitor and the first output, the minus earth of described first electrochemical capacitor, first output of described precharge control circuit connects the charging input end of described DC converting circuit, the positive pole of described first electrochemical capacitor connects the first end of described first resistance, second end of described first resistance connects the output of described switching tube, second end of described first resistance is the second output of described output circuit, second output of described precharge control circuit connects the control end of described DC converting circuit, the control end of described switching tube is the charging Enable Pin of described input circuit, the output head grounding of described switching tube.
Described DC converting circuit comprises direct current transducer, diode, first inductance, second electrochemical capacitor and the 3rd electric capacity, the charging input end of described direct current transducer connects the first output of described precharge control circuit, the Enable Pin of described direct current transducer connects the second output of described precharge control circuit, the feedback end of described direct current transducer connects the output of described voltage feedback circuit and the output of described current feedback circuit, the negative electrode of described diode connects the output of described direct current transducer and the first end of described first inductance, the plus earth of described diode, second end of described first inductance connects the first end of described current sampling resistor, the first end of described second electrochemical capacitor and the first end of described 3rd electric capacity, second end of described second electrochemical capacitor and the second end ground connection of described 3rd electric capacity.
Described DC converting circuit comprises direct current transducer, second inductance, second electrochemical capacitor and the 3rd electric capacity, the charging input end of described direct current transducer connects the first output of described precharge control circuit, the Enable Pin of described direct current transducer connects the second output of described precharge control circuit, the feedback end of described direct current transducer connects the output of described voltage feedback circuit and the output of described current feedback circuit, second end of described second inductance connects the first end of described current sampling resistor, the first end of described second electrochemical capacitor and the first end of described 3rd electric capacity, second end of described second electrochemical capacitor and the second end ground connection of described 3rd electric capacity.
Described voltage feedback circuit comprises the second resistance and the 3rd resistance, the first end of described second resistance connects the second end of described current sampling resistor, the first end of described second resistance connects the first end of described 3rd resistance, second end ground connection of described 3rd resistance, the first end of described 3rd resistance connects the pressure feedback port of described direct current transducer.
Described charging device also comprises protective tube, and one end of described protective tube connects described sampling resistor, and the other end of described protective tube connects described super capacitor.
Described current mirror and described current sampling resistor vicinity are arranged on circuit boards.
The charging device of a kind of super capacitor provided by the invention, by arrange precharge control circuit when super capacitor current voltage lower than during preset value control pwm signal be that super capacitor carries out charging to make the magnitude of voltage of electric capacity to reach the first preset value, control DC converting circuit again and constant voltage constant current charging is carried out to super capacitor, this charging modes achieves the quick charge of super capacitor, and can not produce self-excitation phenomena.
The charging device of a kind of super capacitor provided by the invention, by in conventional DC voltage converting circuit, increase the voltage conversion circuit of current mirror formula, the high-side current sampling feedback loop formed, realize constant pressure and flow function, and improve precision and the antijamming capability of current sample, because current mirror directly can connect current sampling resistor, do not need to be connected with other components and parts, therefore better wire laying mode can be realized, by current sampling resistor and current mirror near placing, because sampling resistor is very short to the line of current mirror circuit, self-excitation phenomena can not be produced, solve the low problem causing constant current accuracy low of current precision owing to adopting low-side current sampling circuit samples existed in prior art.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the charging device of the electric capacity that prior art provides;
Fig. 2 is the structural representation of the charging device of the super capacitor that an embodiment of the present invention provides;
Fig. 3 is the circuit structure diagram of the charging device of the super capacitor that an embodiment of the present invention provides
Fig. 4 is the circuit structure diagram of the charging device of the super capacitor that the another kind of embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In order to technical scheme of the present invention is described, be described below by specific embodiment.
An embodiment of the present invention provides a kind of charging device of super capacitor, as shown in Figure 2, comprises input circuit 101, precharge control circuit 111, DC converting circuit 103, voltage feedback circuit 108 and current feedback circuit 110;
Input circuit 101 is for direct current transducer 102 input direct voltage;
DC converting circuit 103 for carrying out direct current conversion to direct voltage, and is charged to super capacitor 105;
Precharge control circuit 111 is when being less than the first preset value when the output voltage of DC converting circuit 103, inputting pwm control signal to DC converting circuit 103 makes DC converting circuit 103 pairs of super capacitors 105 carry out pulse current charge, until make the magnitude of voltage of super capacitor 105 reach the first preset value;
Current feedback circuit 110 gathers the output current of DC converting circuit 103, and convert output current to first feedback voltage, first feedback voltage is exported to DC converting circuit 103, makes DC converting circuit 103 pairs of super capacitors 105 carry out constant current charge and make the magnitude of voltage of super capacitor 105 reach the second preset value;
The voltage that voltage feedback circuit 108 gathers DC converting circuit output obtains the second feedback voltage, and the second feedback voltage is exported to DC converting circuit 103, makes DC converting circuit 103 pairs of super capacitors 105 carry out constant voltage charge.
Further, current feedback circuit 110 comprises current sampling resistor 104, current mirror 106 and photovoltaic conversion circuit 107;
Current sampling resistor 104 is between output circuit 103 and super capacitor 105;
Current mirror 106 gathers the output current of output circuit 103 by current sampling resistor 104, and the electric current of collection is sent to voltage conversion circuit 107;
The current conversion that current mirror exports is become the first feedback voltage by voltage conversion circuit 107, and the first feedback voltage is sent to DC converting circuit 103.
Wherein, for input circuit 101, its main purpose is DC converting circuit 103 input direct voltage under the effect of charging control signal.
Concrete, as shown in Figure 2, precharge control circuit 111 comprises the first electrochemical capacitor C1, switching tube M1 and the first resistance R1, the charging input end of the just very precharge control circuit 111 of the first electrochemical capacitor C1 and the first output, the minus earth of the first electrochemical capacitor C1, first output of precharge control circuit 111 connects the charging input end of DC converting circuit 103, the positive pole of the first electrochemical capacitor C1 connects the first end of the first resistance R1, the input of the second end connecting valve pipe M1 of the first resistance R1, second end of the first resistance R1 is the second output of output circuit 103, second output of output circuit 103 connects the control end of direct current transducer 102, the control end of switching tube M1 is the charging Enable Pin of input circuit 101, the output head grounding of switching tube M1.
Precharge control circuit 111 is according to the M1 conducting of control signal control switch pipe or turn off output pwm control signal to control direct current transducer 102 output dc voltage.
Precharge control circuit 111 can comprise microprocessor (MCU), this MCU can comprise CPU (Central Processing Unit, CPU), read-only memory module (read-onlymemory, ROM), random memory module (random access memory, RAM), time block, digital-to-analogue conversion module (A/D converter) and plural I/O.Certainly, precharge control circuit 111 also can adopt the integrated circuit of other form, as: application-specific IC (Application Specific Integrated Circuit, or field programmable gate arrays (Field Programmable Gate Array, FPGA) etc. ASIC).Preferably, precharge control circuit 111 is single-chip microcomputer.
Further, current mirror 106 is arranged on circuit boards with current sampling resistor 104 is contiguous.
For the current mirror 106 in current feedback circuit 110, adopt three end current mirror integrated circuits, can the output current of high-precision collection output circuit, and can closely with current sampling resistor well place, because sampling resistor is very short to the line of current mirror circuit, can not self-excitation phenomena be produced, precision can be improved further and improve antijamming capability.
Further, current feedback circuit 110 also comprises the first diode D1 and the second diode D2, the anode of the first diode D1 connects the anode of the second diode D2 and the output of voltage conversion circuit 107, and the negative electrode of the first diode D1 connects the negative electrode of the second diode D2 and the pressure feedback port of direct current transducer 102.
Wherein, the first diode D1 and the second diode D2 is in parallel, for increasing On current, meets big current needs.
Concrete, voltage conversion circuit 107 is the 4th resistance R4, and the current conversion for being exported by current mirror 106 becomes the first feedback voltage, and the first feedback voltage is sent to DC converting circuit 102.
Further, as shown in Figure 3, in a kind of execution mode, DC converting circuit 103 comprises direct current transducer 102, diode DZ1, first inductance L 1, second electrochemical capacitor C2 and the 3rd electric capacity C3, the charging input end of direct current transducer 102 connects the first output of precharge control circuit 111, the feedback end of direct current transducer 102 connects the output of voltage feedback circuit and the output of current feedback circuit, the negative electrode of diode DZ1 connects the output of direct current transducer 102 and the first end of the first inductance L 1, the plus earth of diode DZ1, second end of the first inductance L 1 connects the first end of current sampling resistor RCS, the first end of the second electrochemical capacitor C2 and the first end of the 3rd electric capacity C3, second end of the second electrochemical capacitor C2 and the second end ground connection of the 3rd electric capacity C3.
Wherein, diode DZ1, the first inductance L 1, second electrochemical capacitor C2 and the 3rd electric capacity C3 are for the formation of the BUCK circuit realizing the output of direct current transducer constant voltage.
As shown in Figure 4, in another kind of real-time mode, DC converting circuit 103 comprises direct current transducer 112, second inductance L 2, second electrochemical capacitor C2 and the 3rd electric capacity C3, the charging input end of direct current transducer 112 connects the first output of input circuit 101, the Enable Pin of direct current transducer 112 connects the second output of precharge control circuit 111, the feedback end of direct current transducer 112 connects the output of voltage feedback circuit 108 and the output of current feedback circuit 110, second end of the second inductance L 2 connects the first end of current sampling resistor RCS1 and RCS2, the first end of the second electrochemical capacitor C2 and the first end of described 3rd electric capacity C3, second end of the second electrochemical capacitor C2 and the second end ground connection of the 3rd electric capacity C3.
Further, voltage feedback circuit 108 comprises the second resistance R2 and the 3rd resistance R3, the first end of the second resistance R2 connects second end of current sampling resistor RCS, the first end of the second resistance R2 connects the first end of the 3rd resistance R3, the second end ground connection of the 3rd resistance R3, the first end of the 3rd resistance R3 connects the pressure feedback port of direct current transducer 102.
Wherein, the second resistance R2 and the 3rd resistance R3 is used for carrying out dividing potential drop to the output voltage of output circuit 103, and provides the second feedback voltage to direct current transducer 102.
Further, charging device also comprises the second diode DZ2, and the anode of the second diode DZ2 connects sampling resistor RCS, and the negative electrode of the second diode DZ2 connects electric capacity.
The object of the second diode DZ2 is for when stopping providing output voltage for electric capacity, prevents the electric current of electric capacity from pouring in down a chimney the effect entering charging device.
Further, charging device also comprises protective tube, and one end of protective tube connects sampling resistor RCS, and the other end of protective tube connects electric capacity.
The object arranging protective tube is when circuit working occurs over-current phenomenon avoidance extremely, has the function automatically disconnecting protection electric capacity.
In the charging device of a kind of electric capacity provided by the invention, the principle that PWM controls is as follows:
When the super-capacitor voltage exported is 0, this circuit cannot work, reason is the feedback voltage that the FB on direct current transducer holds can not be zero, therefore, need when output voltage is 0, PWM is adopted to control the Enable Pin of direct current transducer, control direct current transducer is opened for a moment and is closed for a moment, the step mode of similar pulse, allow the voltage rise of super capacitor to the first preset value, such as 3 volts, and then realize the voltage rise of constant current charge by super capacitor to the second preset value according to the current feedback circuit be made up of current mirror, constant voltage charge is realized again according to voltage feedback circuit.
The charging device of a kind of electric capacity provided by the invention, DC converter and voltage feedback circuit composition circuit basis on add current feedback circuit, current feedback circuit forms high-precision current sampling circuit by sampling resistor, current mirror and voltage conversion circuit, wherein, diodes in parallel in current sampling circuit and output circuit is on DC-DC feedback circuit, constitute constant-current circuit, and also connect in circuit the second diode and self-recoverage protective tube, pour in down a chimney and abnormal current-limiting circuit to form anti-electric current.
The charging device of a kind of electric capacity provided by the invention, compared with prior art, the amplifying circuits such as amplifier are adopted in prior art, sampling resistor is long from amplifying circuit line, because the voltage at sampling resistor two ends is probably at about 100mv, the noise introduced will at the order of magnitude of 10mv, and accuracy of detection can be poor, and wiring difficulty is large.The present invention is by conventional DC voltage converting circuit, increase the voltage conversion circuit of current mirror formula, the high-side current sampling feedback loop formed, realize constant pressure and flow function, because current mirror directly can connect current sampling resistor, do not need to be connected with other components and parts, therefore better wire laying mode can be realized, by current sampling resistor and current mirror near placing, because sampling resistor is very short to the line of current mirror circuit, can not self-excitation phenomena be produced, improve precision and the antijamming capability of current sample.
It should be noted that above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (9)
1. a charging device for super capacitor, is characterized in that: comprise input circuit, precharge control circuit, DC converting circuit, voltage feedback circuit and current feedback circuit;
Described input circuit is used for described DC converting circuit input direct voltage;
Described DC converting circuit is used for carrying out direct current conversion to described direct voltage, and charges to described super capacitor;
Described precharge control circuit is when being less than the first preset value when the output voltage of DC converting circuit, described DC converting circuit is made to carry out pulse current charge to described super capacitor, until make the magnitude of voltage of described super capacitor reach the first preset value to described DC converting circuit input pwm control signal;
Described current feedback circuit gathers the output current of described DC converting circuit, and convert described output current to first feedback voltage, described first feedback voltage is exported to described DC converting circuit, makes described DC converting circuit carry out constant current charge to described super capacitor and make the magnitude of voltage of described super capacitor reach the second preset value;
The voltage that described voltage feedback circuit gathers DC converting circuit output obtains the second feedback voltage, and described second feedback voltage is exported to described DC converting circuit, makes described DC converting circuit carry out constant voltage charge to described super capacitor.
2. charging device as claimed in claim 1, it is characterized in that, described current feedback circuit comprises current sampling resistor, current mirror and photovoltaic conversion circuit;
Described current sampling resistor is between described DC converting circuit and described electric capacity;
Described current mirror gathers the output current of described DC converting circuit by described current sampling resistor, and the electric current of collection is sent to described voltage conversion circuit;
The current conversion that described current mirror exports is become the first feedback voltage by described voltage conversion circuit, and described first feedback voltage is sent to described DC converting circuit.
3. charging device as claimed in claim 2, it is characterized in that, described current feedback circuit also comprises the first diode and the second diode, the anode of described first diode connects the anode of described second diode and the output of described voltage conversion circuit, and the negative electrode of described first diode connects the negative electrode of described second diode and the pressure feedback port of described direct current transducer.
4. charging device as claimed in claim 1, it is characterized in that, described precharge control circuit comprises the first electrochemical capacitor, switching tube and the first resistance, the charging input end of the just very described precharge control circuit of described first electrochemical capacitor and the first output, the minus earth of described first electrochemical capacitor, first output of described precharge control circuit connects the charging input end of described DC converting circuit, the positive pole of described first electrochemical capacitor connects the first end of described first resistance, second end of described first resistance connects the output of described switching tube, second end of described first resistance is the second output of described output circuit, second output of described precharge control circuit connects the control end of described DC converting circuit, the control end of described switching tube is the charging Enable Pin of described input circuit, the output head grounding of described switching tube.
5. charging device as claimed in claim 4, it is characterized in that, described DC converting circuit comprises direct current transducer, diode, first inductance, second electrochemical capacitor and the 3rd electric capacity, the charging input end of described direct current transducer connects the first output of described precharge control circuit, the Enable Pin of described direct current transducer connects the second output of described precharge control circuit, the feedback end of described direct current transducer connects the output of described voltage feedback circuit and the output of described current feedback circuit, the negative electrode of described diode connects the output of described direct current transducer and the first end of described first inductance, the plus earth of described diode, second end of described first inductance connects the first end of described current sampling resistor, the first end of described second electrochemical capacitor and the first end of described 3rd electric capacity, second end of described second electrochemical capacitor and the second end ground connection of described 3rd electric capacity.
6. charging device as claimed in claim 4, it is characterized in that, described DC converting circuit comprises direct current transducer, second inductance, second electrochemical capacitor and the 3rd electric capacity, the charging input end of described direct current transducer connects the first output of described precharge control circuit, the Enable Pin of described direct current transducer connects the second output of described precharge control circuit, the feedback end of described direct current transducer connects the output of described voltage feedback circuit and the output of described current feedback circuit, second end of described second inductance connects the first end of described current sampling resistor, the first end of described second electrochemical capacitor and the first end of described 3rd electric capacity, second end of described second electrochemical capacitor and the second end ground connection of described 3rd electric capacity.
7. charging device as claimed in claim 1, it is characterized in that, described voltage feedback circuit comprises the second resistance and the 3rd resistance, the first end of described second resistance connects the second end of described current sampling resistor, the first end of described second resistance connects the first end of described 3rd resistance, second end ground connection of described 3rd resistance, the first end of described 3rd resistance connects the pressure feedback port of described direct current transducer.
8. charging device as claimed in claim 1, it is characterized in that, described charging device also comprises protective tube, and one end of described protective tube connects described sampling resistor, and the other end of described protective tube connects described super capacitor.
9. charging device as claimed in claim 1, is characterized in that, described current mirror and described current sampling resistor vicinity are arranged on circuit boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494055.2A CN104269898B (en) | 2014-09-24 | 2014-09-24 | Charging unit of super capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494055.2A CN104269898B (en) | 2014-09-24 | 2014-09-24 | Charging unit of super capacitor |
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| CN104269898A true CN104269898A (en) | 2015-01-07 |
| CN104269898B CN104269898B (en) | 2017-05-10 |
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| CN201410494055.2A Active CN104269898B (en) | 2014-09-24 | 2014-09-24 | Charging unit of super capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994622A (en) * | 2016-10-26 | 2018-05-04 | 宁德时代新能源科技股份有限公司 | Battery power supply circuit |
| CN110445236A (en) * | 2019-07-30 | 2019-11-12 | 成都信息工程大学 | A kind of energy conversion device and its working method |
| CN113141110A (en) * | 2021-04-14 | 2021-07-20 | 杰华特微电子股份有限公司 | Switching power supply circuit |
| CN117458662A (en) * | 2023-10-31 | 2024-01-26 | 国网四川省电力公司营销服务中心 | Constant-current constant-voltage control charging system |
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| US20110285352A1 (en) * | 2009-01-30 | 2011-11-24 | Korea Advanced Institute Of Science And Technology | Charge Equalization Apparatus for Series-Connected Battery String Using Regulated Voltage Source |
| CN202550642U (en) * | 2012-03-23 | 2012-11-21 | 徐州市恒源电器有限公司 | Super capacitor charger |
| CN203014402U (en) * | 2012-11-07 | 2013-06-19 | 沈阳创达技术交易市场有限公司 | Charging device of super capacitor |
| CN203301209U (en) * | 2013-04-28 | 2013-11-20 | 湖北汽车工业学院 | Charging device for super capacitor |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110285352A1 (en) * | 2009-01-30 | 2011-11-24 | Korea Advanced Institute Of Science And Technology | Charge Equalization Apparatus for Series-Connected Battery String Using Regulated Voltage Source |
| CN202550642U (en) * | 2012-03-23 | 2012-11-21 | 徐州市恒源电器有限公司 | Super capacitor charger |
| CN203014402U (en) * | 2012-11-07 | 2013-06-19 | 沈阳创达技术交易市场有限公司 | Charging device of super capacitor |
| CN203301209U (en) * | 2013-04-28 | 2013-11-20 | 湖北汽车工业学院 | Charging device for super capacitor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107994622A (en) * | 2016-10-26 | 2018-05-04 | 宁德时代新能源科技股份有限公司 | Battery power supply circuit |
| CN110445236A (en) * | 2019-07-30 | 2019-11-12 | 成都信息工程大学 | A kind of energy conversion device and its working method |
| CN110445236B (en) * | 2019-07-30 | 2024-04-30 | 成都信息工程大学 | Energy conversion device and working method thereof |
| CN113141110A (en) * | 2021-04-14 | 2021-07-20 | 杰华特微电子股份有限公司 | Switching power supply circuit |
| CN117458662A (en) * | 2023-10-31 | 2024-01-26 | 国网四川省电力公司营销服务中心 | Constant-current constant-voltage control charging system |
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| Publication number | Publication date |
|---|---|
| CN104269898B (en) | 2017-05-10 |
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