CN208241386U - A kind of constant-power charging circuit - Google Patents
A kind of constant-power charging circuit Download PDFInfo
- Publication number
- CN208241386U CN208241386U CN201820729338.4U CN201820729338U CN208241386U CN 208241386 U CN208241386 U CN 208241386U CN 201820729338 U CN201820729338 U CN 201820729338U CN 208241386 U CN208241386 U CN 208241386U
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- Prior art keywords
- circuit
- constant
- translation
- power
- translation circuit
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Abstract
The utility model relates to invariable power charging technique fields, specifically disclose a kind of constant-power charging circuit, wherein, it include: constant-power control circuit, DC/DC translation circuit and sample circuit, the input terminal of DC/DC translation circuit connects DC voltage, the output end of DC/DC translation circuit connects energy storage device, constant-power control circuit is connect with DC/DC translation circuit and sample circuit respectively, sample circuit is connect with the output end of DC/DC translation circuit, DC/DC translation circuit can be converted the DC voltage of input to obtain required DC voltage, sample circuit can carry out real-time voltage and current sample to the output end of DC/DC translation circuit, and the voltage and current for obtaining real-time sampling is sent to constant-power control circuit, constant-power control circuit can be obtained according to real-time sampling Voltage and current calculate the current power of DC/DC translation circuit, and control signal is exported according to calculated result.Constant-power charging circuit provided by the utility model can reliably and flexibly realize that invariable power charges.
Description
Technical field
The utility model relates to invariable power charging technique field more particularly to a kind of constant-power charging circuits.
Background technique
For traditional charging modes since electric current is smaller, the charging time is longer, with the quickening pace of modern life, people couple
Energy storage device needed for automobile, bus etc. needs to realize quick charge, and to realize quick charge, it can use super
Capacitor etc. realizes that current super capacitor charging has constant-current charge and invariable power charging, and current battery is largely constant-current charge,
For the operation power of ring network cabinet, due to front high pressure PT power limited, and super capacitor is started to charge from 0V, if adopted
It is very slow although being very easy to realize with constant-current charge, and if only charged using invariable power to super capacitor merely
Although being relatively suitble to, circuit is complicated.The implementation or devices at full hardware of invariable power in the prior art charging realize or
Mainly by software realization, for hardware as auxiliary, the high reliablity that devices at full hardware is realized is inflexible, although and software realization
Flexibly but reliability is not high.
Therefore, it is urgently to be resolved as those skilled in the art how to provide a kind of reliable and flexible constant-power charging circuit
The technical issues of.
Summary of the invention
The utility model aims to solve at least one of the technical problems existing in the prior art, provides a kind of invariable power charging
Circuit, to solve the problems of the prior art.
As the one aspect of the utility model, a kind of constant-power charging circuit is provided, wherein the invariable power charging electricity
Road includes: constant-power control circuit, DC/DC translation circuit and sample circuit,
The input terminal of the DC/DC translation circuit connects DC voltage, and the output end of the DC/DC translation circuit connects storage
Energy equipment, the constant-power control circuit are connect with the DC/DC translation circuit and the sample circuit respectively, the sampling electricity
Road is connect with the output end of the DC/DC translation circuit,
The DC/DC translation circuit can be converted the DC voltage of input to obtain required DC voltage, described
Sample circuit can carry out real-time voltage and current sample to the output end of the DC/DC translation circuit, and real-time sampling is obtained
To voltage and current be sent to the constant-power control circuit, the constant-power control circuit can be obtained according to real-time sampling
Voltage and current calculate the current power of the DC/DC translation circuit, and control signal is exported to control according to calculated result
The PWM of DC/DC translation circuit.
Preferably, the constant-power charging circuit further includes current rectifying and wave filtering circuit, the input terminal of the current rectifying and wave filtering circuit
Alternating current is connected, the output end of the current rectifying and wave filtering circuit connects the output end of the DC/DC translation circuit, the rectifying and wave-filtering
Alternating voltage can be carried out rectifying and wave-filtering and obtain DC voltage by circuit.
Preferably, the DC/DC translation circuit includes step-down conversion circuit, boost conversion circuit, buck translation circuit
With any one in transformer isolation circuit.
Preferably, the DC/DC translation circuit includes voltage-dropping type BUCK translation circuit.
Preferably, the driving chip in the DC/DC translation circuit includes the chip of model UCC37324.
Preferably, the control chip in the DC/DC translation circuit includes the chip of model TL494.
Preferably, the constant-power control circuit includes single-chip microcontroller.
Preferably, the model of the single-chip microcontroller includes STM32F100C8.
Constant-power charging circuit provided by the utility model acquires output voltage and output electricity by Acquisition Circuit in real time
Stream, and collected output voltage and electric current are sent to constant-power control circuit, output is calculated in constant-power control circuit
Power, and the PWM of current DC/DC translation circuit is adjusted according to output power, this invariable power charging provided by the utility model
The control mode of circuit can effectively realize the control of constant-power charging circuit, reduce the charging time of energy storage device, and this
Control mode is reliable and flexible.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of constant-power charging circuit provided by the utility model.
Fig. 2 is the specific embodiment structural schematic diagram of constant-power charging circuit provided by the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
As the one aspect of the utility model, a kind of constant-power charging circuit is provided, wherein as shown in Figure 1, the perseverance
Power charging circuit includes: constant-power control circuit 110, DC/DC translation circuit 120 and sample circuit 130,
The input terminal of the DC/DC translation circuit 120 connects DC voltage, the output end of the DC/DC translation circuit 120
Connect energy storage device, the constant-power control circuit 110 respectively with the DC/DC translation circuit 120 and the sample circuit 130
Connection, the sample circuit 130 are connect with the output end of the DC/DC translation circuit 120,
The DC/DC translation circuit 120 can be converted the DC voltage of input to obtain required DC voltage, institute
Real-time voltage and current sample can be carried out to the output end of the DC/DC translation circuit 120 by stating sample circuit 130, and will be real
When the voltage and current that samples be sent to the constant-power control circuit 110, the constant-power control circuit 110 being capable of root
The current power of the DC/DC translation circuit 120 is calculated according to the voltage and current that real-time sampling obtains, and defeated according to calculated result
Control signal out to control the PWM of DC/DC translation circuit 120.
Constant-power charging circuit provided by the utility model acquires output voltage and output electricity by Acquisition Circuit in real time
Stream, and collected output voltage and electric current are sent to constant-power control circuit, output is calculated in constant-power control circuit
Power, and the PWM of current DC/DC translation circuit is adjusted according to output power, this invariable power charging provided by the utility model
The control mode of circuit can effectively realize the control of constant-power charging circuit, reduce the charging time of energy storage device, and this
Control mode is reliable and flexible.
Specifically, as shown in Fig. 2, the constant-power charging circuit further includes current rectifying and wave filtering circuit 140, the rectifying and wave-filtering
The input terminal of circuit connects alternating current, and the output end of the current rectifying and wave filtering circuit 140 connects the DC/DC translation circuit 120
Alternating voltage can be carried out rectifying and wave-filtering and obtain DC voltage by output end, the current rectifying and wave filtering circuit 140.
Preferably, the DC/DC translation circuit 120 includes step-down conversion circuit, boost conversion circuit, buck transformation electricity
Any one in road and transformer isolation circuit.
Preferably, the DC/DC translation circuit 120 includes voltage-dropping type BUCK translation circuit.
Preferably, the driving chip in the DC/DC translation circuit 120 includes the chip of model UCC37324.
Preferably, the control chip in the DC/DC translation circuit 120 includes the chip of model TL494.
Preferably, the constant-power control circuit 110 includes single-chip microcontroller.
It is further preferred that the model of the single-chip microcontroller includes STM32F100C8.
The working principle of constant-power charging circuit provided by the utility model is, the acquisition of sample circuit 130 output electric current and
Voltage adjusts the PWM of the main control chip in DC/DC translation circuit according to the charge characteristic of battery, to keep output for constant function
Rate.Main control chip calculates output power according to output electric current and output voltage, adjusts control chip reference voltage then to adjust
Output power.
By taking the specified charge power of energy storage device is 1000W as an example, traditional charging modes are constant-current charge, it is assumed that it is 10A,
Then charging voltage is charged to 100V by 0V, is only when only arriving 100V and is charged with rated power, and consuming time is long for charging in this way, and this
This constant-power charging circuit that utility model provides is with non-when charging between 0 ~ 40V if maximum charging current is 25A
Rated power charging, and when voltage reaches 40V, specified charge power is had reached, in 40V ~ 100V charging, electric current is gradually
It reduces, and power always remains as 1000W, therefore this constant-power charging circuit provided by the utility model is compared to more traditional
Charging modes can effectively save for 30% charging time.
It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case where the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection scope.
Claims (8)
1. a kind of constant-power charging circuit, which is characterized in that the constant-power charging circuit includes: constant-power control circuit, DC/
DC translation circuit and sample circuit,
The input terminal of the DC/DC translation circuit connects DC voltage, and the output end connection energy storage of the DC/DC translation circuit is set
Standby, the constant-power control circuit is connect with the DC/DC translation circuit and the sample circuit respectively, the sample circuit with
The output end of the DC/DC translation circuit connects,
The DC/DC translation circuit can be converted the DC voltage of input to obtain required DC voltage, the sampling
Circuit can carry out real-time voltage and current sample to the output end of the DC/DC translation circuit, and real-time sampling is obtained
Voltage and current is sent to the constant-power control circuit, the electricity that the constant-power control circuit can be obtained according to real-time sampling
Pressure and electric current calculate the current power of the DC/DC translation circuit, and export control signal according to calculated result to control DC/DC
The PWM of translation circuit.
2. constant-power charging circuit according to claim 1, which is characterized in that the constant-power charging circuit further includes whole
Filter circuit is flowed, the input terminal of the current rectifying and wave filtering circuit connects alternating current, and the output end of the current rectifying and wave filtering circuit connects institute
The output end of DC/DC translation circuit is stated, alternating voltage can be carried out rectifying and wave-filtering and obtain direct current by the current rectifying and wave filtering circuit
Pressure.
3. constant-power charging circuit according to claim 1 or 2, which is characterized in that the DC/DC translation circuit includes drop
Press any one in translation circuit, boost conversion circuit, buck translation circuit and transformer isolation circuit.
4. constant-power charging circuit according to claim 3, which is characterized in that the DC/DC translation circuit includes decompression
Type BUCK translation circuit.
5. constant-power charging circuit according to claim 4, which is characterized in that the driving in the DC/DC translation circuit
Chip includes the chip of model UCC37324.
6. constant-power charging circuit according to claim 4, which is characterized in that the control in the DC/DC translation circuit
Chip includes the chip of model TL494.
7. constant-power charging circuit according to claim 1, which is characterized in that the constant-power control circuit includes monolithic
Machine.
8. constant-power charging circuit according to claim 7, which is characterized in that the model of the single-chip microcontroller includes
STM32F100C8。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820729338.4U CN208241386U (en) | 2018-05-16 | 2018-05-16 | A kind of constant-power charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820729338.4U CN208241386U (en) | 2018-05-16 | 2018-05-16 | A kind of constant-power charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208241386U true CN208241386U (en) | 2018-12-14 |
Family
ID=64580349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820729338.4U Expired - Fee Related CN208241386U (en) | 2018-05-16 | 2018-05-16 | A kind of constant-power charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208241386U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086233A (en) * | 2019-06-01 | 2019-08-02 | 深圳市永航新能源技术有限公司 | A kind of power adaptive charging method and charging unit |
| CN110957795A (en) * | 2019-12-05 | 2020-04-03 | 深圳市洲明科技股份有限公司 | Charging circuit, charging device and display screen |
| CN111864835A (en) * | 2020-07-15 | 2020-10-30 | 荆州市荆力工程设计咨询有限责任公司 | Farad capacitor constant power charging system and control method thereof |
-
2018
- 2018-05-16 CN CN201820729338.4U patent/CN208241386U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086233A (en) * | 2019-06-01 | 2019-08-02 | 深圳市永航新能源技术有限公司 | A kind of power adaptive charging method and charging unit |
| CN110086233B (en) * | 2019-06-01 | 2021-09-03 | 深圳市永航新能源技术有限公司 | Power self-adaptive charging method and charging device |
| CN110957795A (en) * | 2019-12-05 | 2020-04-03 | 深圳市洲明科技股份有限公司 | Charging circuit, charging device and display screen |
| CN111864835A (en) * | 2020-07-15 | 2020-10-30 | 荆州市荆力工程设计咨询有限责任公司 | Farad capacitor constant power charging system and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |