CN202395473U - Charging device for super capacitor - Google Patents
Charging device for super capacitor Download PDFInfo
- Publication number
- CN202395473U CN202395473U CN2011205027233U CN201120502723U CN202395473U CN 202395473 U CN202395473 U CN 202395473U CN 2011205027233 U CN2011205027233 U CN 2011205027233U CN 201120502723 U CN201120502723 U CN 201120502723U CN 202395473 U CN202395473 U CN 202395473U
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- China
- Prior art keywords
- charging
- current
- ultracapacitor
- switching device
- super capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a charging device for a super capacitor, and is characterized in that: a detection unit (201) comprises a voltage sensor and a current sensor, and is used for detecting a terminal voltage, a charging current and a charging power supply maximum charging power of a super capacitor CL; a charging control chip (202) comprises an inner core, a sampling holder, a pulse width modulation module, and a universal interface; wherein the sampling holder in the charging control chip (202) is connected with the detection unit (201), and is used for calculating a charging current for the super capacitor CL according to the detected voltage value, the detected current value, and the detected power value; an output end of the pulse width modulation module is connected with a control end of a switching device Q in a DC (Direct Current) chopping circuit (203), the pulse width modulation module is used for sending a control command to the switching device Q in the DC chopping circuit (203), and controlling on-off of a short switch (205) through the universal interface. By adopting the charging device for the super capacitor in the utility model to charge the super capacitor, a charging efficiency of a charging power supply to the super capacitor can be raised.
Description
Technical field
The utility model relates to ultracapacitor charging technique field, in particular a kind of ultracapacitor charging method and the ultracapacitor charging system that uses this method.
Background technology
How to use energy storage device raising power supply to load the efficient of energy to be provided is converter and current transformer design key points in the distributed generation system always.When energy from regenerative resource, during like photovoltaic cell or blower fan, the use of energy storage device can play level and smooth power, provide night important function such as energy source.
MPPT maximum power point tracking control is many through realizing with the DC/DC converter of photovoltaic cell or fan parallel-connection; But under this kind control mode, converter output DC bus-bar voltage can dynamic change in a scope, if directly use it to charge to ultracapacitor; Because output voltage can not be controlled; Cause when ultracapacitor terminal voltage and busbar voltage difference are big, like the charging initial stage, charging current is excessive; The power that on the ultracapacitor equivalent series resistance, consumes is big, so charge efficiency is very low.
Therefore, need under the different charging modes of quantitative analysis photovoltaic cell to the charge efficiency of ultracapacitor, thereby design suitable charging algorithm, and combine concrete charging system to realize.
Summary of the invention
Technical problem:The purpose of the utility model is to provide a kind of charging device of ultracapacitor, and the disclosed ultracapacitor charging method of utilization the utility model is charged to ultracapacitor, can improve the charge efficiency of charge power supply to ultracapacitor.
Technical scheme:The charging device of the ultracapacitor of the utility model comprises:
Detecting unit comprises voltage sensor, current sensor, detects ultracapacitor C
LTerminal voltage, charging current and charge power supply maximum charge power;
Charge controlling chip comprises kernel, sampling holder, pulse width modulation module, general-purpose interface; Sampling holder in the charge controlling chip links to each other with detecting unit, according to detected voltage, electric current and performance number, calculates ultracapacitor C
LCharging current; The control end of switching device Q in the output termination DC chopper circuit of pulse width modulation module, the switching device Q in DC chopper circuit sends control command, and controls the break-make of short switch through general-purpose interface;
DC chopper circuit is by electric capacity of voltage regulation C
Bus, switching device Q, sustained diode, inductance L form, and is used to the charging current that obtains to set; The drain D of switching device Q in the DC chopper circuit is connected to the negative electrode and the inductance L of sustained diode, and the grid G of switching device Q is connected to pulse width modulation module, current-limiting resistance and ultracapacitor C
LSeries connection;
Current-limiting resistance is connected between the emitter and collector electrode of short switch, is used in charging incipient stage limit charging current; Short switch is relay, D.C. contactor or electronic switch, is used for short circuit current limitation resistance when the current-limiting charge mode begins.
Described switching device Q is the semiconductor switch pipe of electric power FET MOSFET, power transistor GTR or insulated gate bipolar transistor IGBT; Described sustained diode is Schottky diode or Ultrafast recovery diode.
Beneficial effect:Use the charging device of the disclosed ultracapacitor of the utility model; The disclosed ultracapacitor charging method of utilization the utility model is charged to ultracapacitor; Can improve the charge efficiency of charge power supply, promptly improve the ratio that the charge power supply rechargeable energy is converted into the ultracapacitor stored energy ultracapacitor.
Description of drawings
Fig. 1 is the topology diagram of the utility model charging system.
Wherein have:
201: detecting unit,
202: charge controlling chip,
203: DC chopper circuit,
204: current-limiting resistance,
205: short switch.
Embodiment
The utility model discloses a kind of ultracapacitor charging system, comprising:
Detecting unit detects ultracapacitor terminal voltage, charging current, charge power supply maximum charge power;
Charge controlling chip links to each other with detecting unit, according to detected voltage, electric current and performance number, calculates the charging current to ultracapacitor, and the switching device in DC chopper circuit sends control command, and the break-make of control short switch;
DC chopper circuit is used to the charging current that obtains to set;
Current-limiting resistance is used for the limit charging current at charge step a;
Short switch is used for short circuit current limitation resistance when step b begins.
Wherein, DC chopper circuit is made up of switching device Q, sustained diode, inductance L.Described switching device Q is the semiconductor switch pipe of electric power FET MOSFET, power transistor GTR or insulated gate bipolar transistor IGBT.Described sustained diode is Schottky diode or Ultrafast recovery diode.
Short switch is relay, D.C. contactor or electronic switch.
The method of the utility model ultracapacitor charging may further comprise the steps:
A. in the charging incipient stage, use the soft start charging modes;
B. when the maximum charge power that the product of ultracapacitor terminal voltage and its maximum charging current that can bear can provide less than charge power supply, use current-limiting charge mode;
The maximum charge power that c. can provide more than or equal to charge power supply at the product of ultracapacitor terminal voltage and its maximum charging current that can bear, and the ultracapacitor terminal voltage is used permanent power charging modes when being lower than rated value.
Be preset with first voltage threshold, second voltage threshold and tertiary voltage threshold value, and first voltage threshold is less than second voltage threshold, second voltage threshold is less than the tertiary voltage threshold value.When super capacitor electrode forces down in first voltage threshold; Use step a charging modes, when ultracapacitor voltage is higher than first voltage threshold and is lower than second voltage threshold; Use step b charging modes; When ultracapacitor voltage is higher than second voltage threshold and is lower than the tertiary voltage threshold value, use step c charging modes.
In step a, the soft start charging modes is through realizing with a current-limiting resistance of ultracapacitor series connection.
In step b, the charging current of qualification is that the maximum charging current that ultracapacitor can bear multiply by a proportionality coefficient.
In step c, the reference value of charging current multiply by a proportionality coefficient acquisition by the maximum charge power of charge power supply and the difference of loss power.
Below in conjunction with accompanying drawing execution mode of the utility model and concrete operating process are explained, but the protection range of the utility model is not limited to following specifying.
Fig. 1 is the charging system of the utility model.This system is made up of detecting unit 201, charge controlling chip 202, DC chopper circuit 203, current-limiting resistance 204, short switch 205.Wherein, DC chopper circuit 203 is made up of switching device Q, sustained diode, inductance L.
Detecting unit 201 is used for acquisition testing ultracapacitor terminal voltage
v Sc, charging current
i Sc, charge power supply maximum charge power
p c, charge controlling chip 202 is responsible for the sampled value of processing and detecting unit 201, and and loss power
P Loss, maximum charging current
I Scmax, the DC chopper circuit minimum output voltage
V OminCommon calculating obtains charging system charge step of living in, and switching device Q and short switch 205 in the control DC chopper circuit 203.
The charging method of the charging system of the utility model is divided into following steps:
Step 1: first voltage threshold is DC chopper circuit 203 minimum output voltages
V OminIn the ultracapacitor terminal voltage
v ScReach the DC chopper circuit minimum output voltage
V OminBefore, charge controlling chip 202 control short switches 205 break off, and this moment, the minimum duty cycle of using switching device Q to allow was charged to super capacitor, when the capacitor terminal voltage through current-limiting resistance 204
v ScEqual after first voltage threshold, charge controlling chip 202 control short switches 205 break off closed, and current-limiting resistance 204 is by short circuit, and step 1 finishes.
Step 2: the maximum charging current that charging system limits
I CmaxThe maximum charging current that can bear for ultracapacitor multiply by a proportionality coefficient (being generally 0.5 ~ 0.8), and second voltage threshold does
p c/
I Cmax, when the ultracapacitor terminal voltage
v ScWhen pressure was lower than second voltage threshold simultaneously above first voltage threshold, the charging current that charge controlling chip 202 control DC chopper circuits 203 produce was no more than the maximum charging current that charging system limits
I Cmax, when the capacitor terminal voltage
v ScEqual after second voltage threshold, step 2 finishes.
Step 3: the tertiary voltage threshold value is the rated voltage of ultracapacitor, when the ultracapacitor terminal voltage
v ScWhen pressure was lower than the tertiary voltage threshold value simultaneously above second voltage threshold, charging system was operated in permanent power charged state, and concrete mode is that detecting unit 201 is gathered the ultracapacitor charging currents
i ScAnd terminal voltage
v Sc, current charge power of the super capacitor that calculates and charge power supply maximum charge power
P cAnd loss power
P LossThe difference Δ
P, and multiply by a proportionality coefficient (being generally 0.8 ~ 0.9), as the controlled quentity controlled variable of DC chopper circuit 203 output currents, this controlled quentity controlled variable is by the control signal of switching device Q in charge controlling chip 202 processing and the generation DC chopper circuit 203, when the capacitor terminal voltage
v ScEqual after the tertiary voltage threshold value, step 3 finishes.
Claims (2)
1. the charging device of a ultracapacitor is characterized in that this device comprises:
Detecting unit (201) comprises voltage sensor, current sensor, detects ultracapacitor C
LTerminal voltage, charging current and charge power supply maximum charge power;
Charge controlling chip (202) comprises kernel, sampling holder, pulse width modulation module, general-purpose interface; Sampling holder in the charge controlling chip (202) links to each other with detecting unit, according to detected voltage, electric current and performance number, calculates ultracapacitor C
LCharging current; The control end of switching device Q in the output termination DC chopper circuit (203) of pulse width modulation module, the switching device Q in DC chopper circuit (203) sends control command, and controls the break-make of short switch (205) through general-purpose interface;
DC chopper circuit (203) is by electric capacity of voltage regulation C
Bus, switching device Q, sustained diode, inductance L form, and is used to the charging current that obtains to set; The drain D of switching device Q in the DC chopper circuit (203) is connected to the negative electrode and the inductance L of sustained diode, and the grid G of switching device Q is connected to pulse width modulation module, current-limiting resistance (204) and ultracapacitor C
LSeries connection;
Current-limiting resistance (204) is connected between the emitter and collector electrode of short switch (205), is used in charging incipient stage limit charging current; Short switch (205) is relay, D.C. contactor or electronic switch, is used for short circuit current limitation resistance (204) when the current-limiting charge mode begins.
2. the charging device of ultracapacitor according to claim 1, it is characterized in that: described switching device Q is the semiconductor switch pipe of electric power FET MOSFET, power transistor GTR or insulated gate bipolar transistor IGBT; Described sustained diode is Schottky diode or Ultrafast recovery diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205027233U CN202395473U (en) | 2011-12-07 | 2011-12-07 | Charging device for super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205027233U CN202395473U (en) | 2011-12-07 | 2011-12-07 | Charging device for super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395473U true CN202395473U (en) | 2012-08-22 |
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ID=46670375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205027233U Expired - Fee Related CN202395473U (en) | 2011-12-07 | 2011-12-07 | Charging device for super capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395473U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403770A (en) * | 2011-12-07 | 2012-04-04 | 东南大学 | Device and method for charging super capacitor |
| CN103036285A (en) * | 2012-12-07 | 2013-04-10 | 陕西千山航空电子有限责任公司 | Super capacitor charging circuit |
| CN103036284A (en) * | 2012-12-07 | 2013-04-10 | 陕西千山航空电子有限责任公司 | Aviation onboard recorder independent power supply |
| CN105449814A (en) * | 2015-11-29 | 2016-03-30 | 深圳市国耀电子科技股份有限公司 | Protection circuit and method for reducing current impact during charging of super capacitor |
| CN108711907A (en) * | 2018-06-06 | 2018-10-26 | 华中科技大学 | A kind of high-power charge-discharge circuit |
| CN111030081A (en) * | 2019-12-31 | 2020-04-17 | 清华大学 | Solar energy collection composite micro-energy system and super capacitor charging control method |
| CN111552340A (en) * | 2020-05-08 | 2020-08-18 | 深圳市博实结科技有限公司 | Current control circuit and device |
-
2011
- 2011-12-07 CN CN2011205027233U patent/CN202395473U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403770A (en) * | 2011-12-07 | 2012-04-04 | 东南大学 | Device and method for charging super capacitor |
| CN103036285A (en) * | 2012-12-07 | 2013-04-10 | 陕西千山航空电子有限责任公司 | Super capacitor charging circuit |
| CN103036284A (en) * | 2012-12-07 | 2013-04-10 | 陕西千山航空电子有限责任公司 | Aviation onboard recorder independent power supply |
| CN103036284B (en) * | 2012-12-07 | 2016-01-13 | 陕西千山航空电子有限责任公司 | A kind of aviation onboard recorder independent current source |
| CN105449814A (en) * | 2015-11-29 | 2016-03-30 | 深圳市国耀电子科技股份有限公司 | Protection circuit and method for reducing current impact during charging of super capacitor |
| CN105449814B (en) * | 2015-11-29 | 2018-06-19 | 深圳市国耀电子科技股份有限公司 | The protection circuit and method of rush of current when reducing super capacitor charging |
| CN108711907A (en) * | 2018-06-06 | 2018-10-26 | 华中科技大学 | A kind of high-power charge-discharge circuit |
| CN108711907B (en) * | 2018-06-06 | 2020-07-10 | 华中科技大学 | High-voltage high-power charging and discharging circuit |
| CN111030081A (en) * | 2019-12-31 | 2020-04-17 | 清华大学 | Solar energy collection composite micro-energy system and super capacitor charging control method |
| CN111030081B (en) * | 2019-12-31 | 2021-08-17 | 清华大学 | Solar energy collection composite micro-energy system and super capacitor charging control method |
| CN111552340A (en) * | 2020-05-08 | 2020-08-18 | 深圳市博实结科技有限公司 | Current control circuit and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20131207 |