CN104269898B - Charging unit of super capacitor - Google Patents
Charging unit of super capacitor Download PDFInfo
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- CN104269898B CN104269898B CN201410494055.2A CN201410494055A CN104269898B CN 104269898 B CN104269898 B CN 104269898B CN 201410494055 A CN201410494055 A CN 201410494055A CN 104269898 B CN104269898 B CN 104269898B
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- 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 electric capacity charging technique field, more particularly to a kind of charging device of super capacitor.
Background technology
At present, in the technical scheme being charged to bulky capacitor, a kind of technical scheme using chip supplier to be provided
Module, but the price of the module is higher；Another kind of technical scheme is that electric capacity is filled using series diode and resistance
Electricity, the shortcoming of the technical scheme is the situation for being appropriate only for small current, when the electric current using more than 1A charges, can make current limliting electricity
The caloric value of resistance is excessive, is not suitable for long-time and charges.The third technical scheme is to detect electric current by series resistance, and is passed through
Operational amplifier amplifies voltage multiplication, constitutes constant pressure and flow circuit, as shown in figure 1, in the circuit, control chip, inductance L1
And the DC-DC voltage conversion circuits that diode D1 compositions are conventional, and sampling resistor RCS, amplifier LM321 and diode DZ1
Composition constant current feedback circuit, it is low-side current sampling that the shortcoming of the circuit is the circuit of sampling resistor RCS and amplifier LM321 composition
Circuit, the current precision of sampling is low, causes constant current accuracy low, also, amplifier LM321 is due to two ends parallel resistance R13 and R14,
Cause the distance between amplifier LM321 and sampling resistor RCS farther out, this kind of wire laying mode is easy to produce self-excitation phenomena.To sum up
Described, existing in prior art causes that constant current accuracy is low to ask because the current precision using low-side current sampling circuit samples is low
Topic.
The content of the invention
It is an object of the invention to provide a kind of charging device of super capacitor, it is intended to solve for existing in prior art
Due to the low problem for causing constant current accuracy low of the current precision using low-side current sampling circuit samples.
The present invention is achieved in that a kind of charging device of super capacitor, including input circuit, preliminary filling electric control electricity
Road, DC converting circuit, voltage feedback circuit and current feedback circuit；
The input circuit is used for the DC converting circuit input direct voltage；
The DC converting circuit is used to carry out the DC voltage direct current conversion, and the super capacitor is charged；
The precharge control circuit when the output voltage of DC converting circuit is less than the first preset value, to described straight
Stream change-over circuit input pwm control signal makes the DC converting circuit carry out pulse charge to the super capacitor, until making
The magnitude of voltage of the super capacitor reaches the first preset value；
The current feedback circuit gathers the output current of the DC converting circuit, and the output current is converted into
First feedback voltage, first feedback voltage is exported to the DC converting circuit, makes the DC converting circuit to institute
Stating super capacitor carries out constant-current charge and makes the magnitude of voltage of the super capacitor reach the second preset value；
The voltage of voltage feedback circuit collection DC converting circuit output obtains the second feedback voltage, and by described the
Two feedback voltages are exported to the DC converting circuit, are made the DC converting circuit carry out constant pressure to the super capacitor and are filled
Electricity.
The current feedback circuit includes current sampling resistor, current mirror and photovoltaic conversion circuit；
The current sampling resistor is located between the DC converting circuit and the electric capacity；
The current mirror gathers the output current of the DC converting circuit by the current sampling resistor, and will collection
Electric current be sent to the voltage conversion circuit；
The electric current that the current mirror is exported is converted into the first feedback voltage by the voltage conversion circuit, and by described first
Feedback voltage is sent to the DC converting circuit.
The current feedback circuit also includes the first diode and the second diode, the anode connection of first diode
The anode of second diode and the outfan of the voltage conversion circuit, the negative electrode connection described the of first diode
The pressure feedback port of the negative electrode of two diodes and the direct current transducer.
The precharge control circuit includes the first electrochemical capacitor, switching tube and first resistor, the first electrolysis electricity
The charging input end and the first outfan of the just extremely described precharge control circuit for holding, the negative pole of first electrochemical capacitor connects
Ground, the first outfan of the precharge control circuit connects the charging input end of the DC converting circuit, and described first is electric
The positive pole of solution electric capacity connects the first end of the first resistor, and the second end of the first resistor connects the output of the switching tube
End, the second end of the first resistor is the second outfan of the output circuit, and the second of the precharge control circuit is defeated
Go out the control end of the end connection DC converting circuit, the control end of the switching tube is the charging enable of the input circuit
End, the output head grounding of the switching tube.
The DC converting circuit includes that direct current transducer, diode, the first inductance, the second electrochemical capacitor and the 3rd are electric
Hold, the charging input end of the direct current transducer connects the first outfan of the precharge control circuit, the direct current conversion
The Enable Pin of device connects the second outfan of the precharge control circuit, and the feedback end of the direct current transducer connects the electricity
The outfan of pressure feedback circuit and the outfan of the current feedback circuit, the negative electrode of the diode connects the direct current conversion
The first end of the outfan of device and first inductance, the plus earth of the diode, the second end of first inductance connects
The first end of the first end, the first end of second electrochemical capacitor and the 3rd electric capacity of the current sampling resistor is connect,
The second end ground connection of the second end of second electrochemical capacitor and the 3rd electric capacity.
The DC converting circuit includes direct current transducer, the second inductance, the second electrochemical capacitor and the 3rd electric capacity, described
The charging input end of direct current transducer connects the first outfan of the precharge control circuit, the enable of the direct current transducer
Second outfan of the end connection precharge control circuit, the feedback end of the direct current transducer connects the Voltage Feedback electricity
The outfan of the outfan on road and the current feedback circuit, the second end of second inductance connects the current sampling resistor
First end, the first end of second electrochemical capacitor and the 3rd electric capacity first end, second electrochemical capacitor
The second end ground connection of the second end and the 3rd electric capacity.
The voltage feedback circuit includes second resistance and 3rd resistor, and the first end of the second resistance connects the electricity
Second end of stream sampling resistor, the first end of the second resistance connects the first end of the 3rd resistor, the 3rd resistor
The second end ground connection, the first end of the 3rd resistor connects the pressure feedback port of the direct current transducer.
The charging device also includes protective tube, and one end of the protective tube connects the sampling resistor, the protective tube
The other end connect the super capacitor.
The current mirror is neighbouring with the current sampling resistor to be arranged on circuit boards.
The charging device of a kind of super capacitor that the present invention is provided, by arranging precharge control circuit when super capacitor is worked as
Front voltage control when being less than preset value pwm signal be charged for super capacitor so that the magnitude of voltage of electric capacity to reach first default
Be worth, then control DC converting circuit carries out constant voltage constant current charging to super capacitor, and the charging modes realize the fast of super capacitor
Speed charges, and will not produce self-excitation phenomena.
The charging device of a kind of super capacitor that the present invention is provided, by conventional DC voltage converting circuit, increasing
Plus the voltage conversion circuit of current mirror formula, the high-side current sampling feedback loop of formation, constant pressure and flow function is realized, and carry
The precision and capacity of resisting disturbance of high current sample, because current mirror can be directly connected to current sampling resistor, it is not necessary to other
Components and parts connect, therefore can realize more preferable wire laying mode, will current sampling resistor with current mirror near placing, due to adopting
The line of sample resistance to current mirror circuit is very short, will not produce self-excitation phenomena, solves present in prior art due to adopting
With the low problem for causing constant current accuracy low of the current precision of low-side current sampling circuit samples.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, below will be to embodiment or description of the prior art
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can be with according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the structural representation of the charging device of the electric capacity that prior art is provided；
Fig. 2 is the structural representation of the charging device of the super capacitor that an embodiment of the present invention is provided；
Fig. 3 is the circuit structure diagram of the charging device of the super capacitor that an embodiment of the present invention is provided
Fig. 4 is the circuit structure diagram of the charging device of the super capacitor that another kind embodiment of the invention is provided.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical scheme, illustrate below by specific embodiment.
An embodiment of the present invention provides a kind of charging device of super capacitor, as shown in Fig. 2 including input circuit 101,
Precharge control circuit 111, DC converting circuit 103, voltage feedback circuit 108 and current feedback circuit 110；
Input circuit 101 is used for the input direct voltage of direct current transducer 102；
DC converting circuit 103 is used to carry out DC voltage direct current conversion, and super capacitor 105 is charged；
Precharge control circuit 111 when DC converting circuit 103 output voltage be less than the first preset value when, to direct current
The input pwm control signal of change-over circuit 103 makes DC converting circuit 103 carry out pulse charge to super capacitor 105, until making to surpass
The magnitude of voltage of level electric capacity 105 reaches the first preset value；
Current feedback circuit 110 gathers the output current of DC converting circuit 103, and it is anti-that output current is converted into into first
Feedthrough voltage, the first feedback voltage is exported to DC converting circuit 103, makes DC converting circuit 103 carry out super capacitor 105
Constant-current charge simultaneously makes the magnitude of voltage of super capacitor 105 reach the second preset value；
The voltage of the collection DC converting circuit output of voltage feedback circuit 108 obtains the second feedback voltage, and anti-by second
Feedthrough voltage is exported to DC converting circuit 103, makes DC converting circuit 103 carry out constant-voltage charge to super capacitor 105.
Further, current feedback circuit 110 includes current sampling resistor 104, current mirror 106 and photovoltaic conversion circuit
107；
Current sampling resistor 104 is located between output circuit 103 and super capacitor 105；
Current mirror 106 gathers the output current of output circuit 103, and the electric current that will be gathered by current sampling resistor 104
It is sent to voltage conversion circuit 107；
The electric current that current mirror is exported is converted into the first feedback voltage by voltage conversion circuit 107, and by the first feedback voltage
It is sent to DC converting circuit 103.
Wherein, for input circuit 101, it is DC converting circuit in the presence of charging control signal that its main purpose is
103 input direct voltages.
Specifically, as shown in Fig. 2 precharge control circuit 111 includes the first electrochemical capacitor C1, switching tube M1 and first
The just extremely charging input end of precharge control circuit 111 and first outfan of resistance R1, the first electrochemical capacitor C1, first is electric
The minus earth of solution electric capacity C1, the charging input of the first outfan connection DC converting circuit 103 of precharge control circuit 111
End, the positive pole of the first electrochemical capacitor C1 connects the first end of first resistor R1, the second end connecting valve pipe M1 of first resistor R1
Input, the second end of first resistor R1 for output circuit 103 the second outfan, the second outfan of output circuit 103
The control end of connection direct current transducer 102, the control end of switching tube M1 for input circuit 101 charging Enable Pin, switching tube M1
Output head grounding.
Precharge control circuit 111 according to control signal controlling switch pipe M1 on or off export pwm control signal with
The control output DC voltage of direct current transducer 102.
Precharge control circuit 111 can include microprocessor (MCU), and the MCU can include CPU
(Central Processing Unit, CPU), read-only memory module (read-onlymemory, ROM), random storage module
(random access memory, RAM), time block, digital-to-analogue conversion module (A/D converter) and plural number
Input/output.Certainly, the integrated circuit that precharge control circuit 111 can also take other form, such as：Special-purpose is integrated
Circuit (Application Specific Integrated Circuit, ASIC) or field programmable gate arrays (Field
Programmable Gate Array, FPGA) etc..Preferably, precharge control circuit 111 is single-chip microcomputer.
Further, current mirror 106 is neighbouring with current sampling resistor 104 is arranged on circuit boards.
For the current mirror 106 in current feedback circuit 110, using three end current mirror integrated circuits, can high accuracy
Collection output circuit output current, and can well with current sampling resistor near place, because sampling resistor is arrived
The line of current mirror circuit is very short, will not produce self-excitation phenomena, can further improve precision and improve capacity of resisting disturbance.
Further, current feedback circuit 110 also includes the first diode D1 and the second diode D2, the first diode D1
Anode connect the second diode D2 anode and voltage conversion circuit 107 outfan, the first diode D1 negative electrode connection
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 are in parallel, for increasing conducting electric current, meet high current needs.
Specifically, voltage conversion circuit 107 is the 4th resistance R4, for the electric current that current mirror 106 is exported to be converted into into the
One feedback voltage, and the first feedback voltage is sent to into DC converting circuit 102.
Further, as shown in figure 3, DC converting circuit 103 includes direct current transducer 102, two in a kind of embodiment
Pole pipe DZ1, the first inductance L1, the second electrochemical capacitor C2 and the 3rd electric capacity C3, the charging input end connection of direct current transducer 102
First outfan of precharge control circuit 111, direct current transducer 102 feedback end connection voltage feedback circuit outfan and
The outfan of current feedback circuit, the outfan of the negative electrode connection direct current transducer 102 of diode DZ1 and the of the first inductance L1
One end, the plus earth of diode DZ1 is the first end of the second end connection current sampling resistor RCS of the first inductance L1, second electric
The first end of solution electric capacity C2 and the first end of the 3rd electric capacity C3, the of second end of the second electrochemical capacitor C2 and the 3rd electric capacity C3
Two ends are grounded.
Wherein, diode DZ1, the first inductance L1, the second electrochemical capacitor C2 and the 3rd electric capacity C3 are used to be formed realization directly
The BUCK circuits of stream transformer constant pressure output.
As shown in figure 4, in another kind of real-time mode, DC converting circuit 103 includes direct current transducer 112, the second inductance
L2, the second electrochemical capacitor C2 and the 3rd electric capacity C3, the of the charging input end connection input circuit 101 of direct current transducer 112
One outfan, the Enable Pin of direct current transducer 112 connects the second outfan of precharge control circuit 111, direct current transducer 112
Feedback end connection voltage feedback circuit 108 outfan and current feedback circuit 110 outfan, the second of the second inductance L2
End connects first end, the first end of the second electrochemical capacitor C2 and the 3rd electric capacity C3 of current sampling resistor RCS1 and RCS2
First end, the second end ground connection of second end of the second electrochemical capacitor C2 and the 3rd electric capacity C3.
Further, voltage feedback circuit 108 includes second resistance R2 and 3rd resistor R3, the first end of second resistance R2
Second end of connection current sampling resistor RCS, the first end of second resistance R2 connects the first end of 3rd resistor R3,3rd resistor
The second end ground connection of R3, the first end of 3rd resistor R3 connects the pressure feedback port of direct current transducer 102.
Wherein, second resistance R2 and 3rd resistor R3 are used to carry out the output voltage of output circuit 103 partial pressure, and to straight
Stream transformer 102 provides the second feedback voltage.
Further, charging device also includes the second diode DZ2, the anode connection sampling resistor of the second diode DZ2
The negative electrode connection electric capacity of RCS, the second diode DZ2.
The purpose of the second diode DZ2 is for when stopping providing output voltage for electric capacity, the electric current for preventing electric capacity to fall
Fill the effect into charging device.
Further, charging device also include protective tube, protective tube one end connection sampling resistor RCS, protective tube it is another
One end connects electric capacity.
The purpose for arranging protective tube is, when over-current phenomenon avoidance occurs in circuit operation irregularity, with disconnecting automatically electric capacity to be protected
Function.
In a kind of charging device of electric capacity that the present invention is provided, the principle of PWM controls is as follows：
When the super-capacitor voltage of output is 0, the circuit cannot work, and reason is the FB ends on direct current transducer
Feedback voltage can not be zero, accordingly, it would be desirable to output voltage be 0 in the case of, using PWM control direct current transducer enable
End, control direct current transducer is opened and closed for a moment for a moment, is similar to the step mode of pulse, allows the voltage of super capacitor to rise to the
One preset value, then realizes constant-current charge by super capacitor further according to the current feedback circuit being made up of current mirror by such as 3 volts
Voltage rises to the second preset value, and further according to voltage feedback circuit constant-voltage charge is realized.
A kind of charging device of electric capacity that the present invention is provided, the circuit constituted in DC converter and voltage feedback circuit
On the basis of increased current feedback circuit, current feedback circuit passes through sampling resistor, current mirror and voltage conversion circuit group
Into high-precision current sampling circuit, wherein, current sampling circuit is electric to DC-DC feedbacks with the diodes in parallel in output circuit
Lu Shang, constitutes constant-current circuit, and also connect in circuit the second diode and self- recoverage protective tube, is fallen with constituting anti-electric current
Fill and abnormal current-limiting circuit.
A kind of charging device of electric capacity that the present invention is provided, compared with prior art, is put in prior art using amplifier etc.
Big circuit, sampling resistor is long from amplifying circuit line, because the voltage at sampling resistor two ends is probably in 100mv or so, draws
The noise for entering will can be poor in the order of magnitude of 10mv, accuracy of detection, wiring difficulty it is big.The present invention is by conventional direct current
In voltage conversion circuit, increase the voltage conversion circuit of current mirror formula, the high-side current sampling feedback loop of formation is realized permanent
Pressure constant current function, because current mirror can be directly connected to current sampling resistor, it is not necessary to be connected with other components and parts, therefore can be real
Existing more preferable wire laying mode, will current sampling resistor with current mirror near placing, because sampling resistor is to current mirror circuit
Line it is very short, will not produce self-excitation phenomena, improve the precision and capacity of resisting disturbance of current sample.
It should be noted that above content is made for the present invention further in detail with reference to specific preferred implementation
Explanation, it is impossible to assert the present invention be embodied as be confined to these explanations.For the common skill of the technical field of the invention
For art personnel, some equivalent substitutes or obvious modification, and performance or use are made without departing from the inventive concept of the premise
It is identical on the way, should all be considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (8)
1. a kind of charging device of super capacitor, it is characterised in that：Including input circuit, precharge control circuit, direct current conversion
Circuit, voltage feedback circuit and current feedback circuit；
The input circuit is used for the DC converting circuit input direct voltage；
The DC converting circuit is used to carry out the DC voltage direct current conversion, and the super capacitor is charged；
The precharge control circuit turns when the output voltage of DC converting circuit is less than the first preset value to the direct current
Changing circuit input pwm control signal makes the DC converting circuit carry out pulse charge to the super capacitor, until making described
The magnitude of voltage of super capacitor reaches the first preset value；
The current feedback circuit gathers the output current of the DC converting circuit, and the output current is converted into into first
Feedback voltage, first feedback voltage is exported to the DC converting circuit, makes the DC converting circuit to described super
Level electric capacity carries out constant-current charge and makes the magnitude of voltage of the super capacitor reach the second preset value；
The voltage of the voltage feedback circuit collection DC converting circuit output obtains the second feedback voltage, and anti-by described second
Feedthrough voltage is exported to the DC converting circuit, makes the DC converting circuit carry out constant-voltage charge to the super capacitor；
The current feedback circuit includes current sampling resistor, current mirror and photovoltaic conversion circuit；
The current sampling resistor is located between the DC converting circuit and the electric capacity；
The current mirror gathers the output current of the DC converting circuit, and the electricity that will be gathered by the current sampling resistor
Stream is sent to the voltage conversion circuit；
The electric current that the current mirror is exported is converted into the first feedback voltage by the voltage conversion circuit, and described first is fed back
Voltage is sent to the DC converting circuit.
2. charging device as claimed in claim 1, it is characterised in that the current feedback circuit also include the first diode and
Second diode, the anode of first diode connects the defeated of the anode of second diode and the voltage conversion circuit
Go out end, the negative electrode of first diode connects the negative electrode of second diode and the Voltage Feedback of the direct current transducer
End.
3. charging device as claimed in claim 1, it is characterised in that the precharge control circuit includes the first electrolysis electricity
Appearance, switching tube and first resistor, the charging input end of the just extremely described precharge control circuit of first electrochemical capacitor
With the first outfan, the minus earth of first electrochemical capacitor, the first outfan connection institute of the precharge control circuit
The charging input end of DC converting circuit is stated, the positive pole of first electrochemical capacitor connects the first end of the first resistor, institute
The second end for stating first resistor connects the outfan of the switching tube, and the second end of the first resistor is the preliminary filling electric control
Second outfan of circuit, the second outfan of the precharge control circuit connects the control end of the DC converting circuit,
The control end of the switching tube is the charging Enable Pin of the input circuit, the input end grounding of the switching tube.
4. charging device as claimed in claim 3, it is characterised in that the DC converting circuit include direct current transducer, two
Pole pipe, the first inductance, the second electrochemical capacitor and the 3rd electric capacity, the charging input end of the direct current transducer connects the preliminary filling
First outfan of electric control circuit, the Enable Pin of the direct current transducer connects the second output of the precharge control circuit
End, the feedback end of the direct current transducer connects the outfan of the voltage feedback circuit and the output of the current feedback circuit
End, the negative electrode of the diode connects the outfan of the direct current transducer and the first end of first inductance, two pole
The plus earth of pipe, the second end of first inductance connects the first end of the current sampling resistor, the second electrolysis electricity
The of the first end of the first end of appearance and the 3rd electric capacity, the second end of second electrochemical capacitor and the 3rd electric capacity
Two ends are grounded.
5. charging device as claimed in claim 3, it is characterised in that the DC converting circuit include direct current transducer, the
Two inductance, the second electrochemical capacitor and the 3rd electric capacity, the charging input end of the direct current transducer connects the preliminary filling electric control
First outfan of circuit, the Enable Pin of the direct current transducer connects the second outfan of the precharge control circuit, institute
The feedback end for stating direct current transducer connects the outfan of the voltage feedback circuit and the outfan of the current feedback circuit, institute
The second end for stating the second inductance connects first end, the first end of second electrochemical capacitor and the institute of the current sampling resistor
State the second end ground connection of the first end of the 3rd electric capacity, the second end of second electrochemical capacitor and the 3rd electric capacity.
6. charging device as claimed in claim 1, it is characterised in that the voltage feedback circuit includes second resistance and the 3rd
Resistance, the first end of the second resistance connects the second end of the current sampling resistor, and the second end of the second resistance connects
The first end of the 3rd resistor is connect, the second end ground connection of the 3rd resistor, the first end connection of the 3rd resistor is described
The pressure feedback port of direct current transducer.
7. charging device as claimed in claim 1, it is characterised in that the charging device also includes protective tube, the insurance
One end of pipe connects the current sampling resistor, and the other end of the protective tube connects the super capacitor.
8. charging device as claimed in claim 1, it is characterised in that the current mirror is neighbouring with the current sampling resistor to be set
Put 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 |
Applications Claiming Priority (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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| CN104269898A CN104269898A (en) | 2015-01-07 |
| CN104269898B true 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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Families Citing this family (5)
| 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 |
| CN110445236B (en) * | 2019-07-30 | 2024-04-30 | 成都信息工程大学 | Energy conversion device and working method thereof |
| CN113036863A (en) * | 2021-03-17 | 2021-06-25 | 深圳友讯达科技股份有限公司 | Charging and discharging management module, charging and discharging device and electronic product of super capacitor bank |
| CN113141110B (en) * | 2021-04-14 | 2022-04-15 | 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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|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101093597B1 (en) * | 2009-01-30 | 2011-12-15 | 한국과학기술원 | Charge Equalization Apparatus for Series-Connected Battery String Using Regulated Voltage Source |
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2014
- 2014-09-24 CN CN201410494055.2A patent/CN104269898B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN104269898A (en) | 2015-01-07 |
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