CN205283180U - Switching power source - Google Patents
Switching power source Download PDFInfo
- Publication number
- CN205283180U CN205283180U CN201521051764.XU CN201521051764U CN205283180U CN 205283180 U CN205283180 U CN 205283180U CN 201521051764 U CN201521051764 U CN 201521051764U CN 205283180 U CN205283180 U CN 205283180U
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- CN
- China
- Prior art keywords
- circuit
- voltage
- feedback
- resistance
- voltage acquisition
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- Expired - Fee Related
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- 238000012216 screening Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
(B, ) the utility model relates to a battery charging source technical field, in particular to switching power source. The utility model discloses a switching power source is including the collection feedback Unit, the control chip that are connected, gathering feedback Unit and including resistance (b) (b) R1 (b) (b) and opto -coupler (b) (b) P1 (b) (b) including the buffer circuit, voltage acquisition screening circuit and the feedback circuit that connect gradually, buffer circuit, voltage acquisition screening circuit includes diode (b) (b) D1 (b) (b), and feedback circuit includes operational amplifier (b) (b) T1 (b) (b), in the carrier roller device, at the buffer circuit that gathers feedback Unit in the battery charging process, utilize opto -coupler (b) (b) P1 (b) (b) control saturation, resistance (b) (b) R1 (b) (b) detects the change of voltage, opto -coupler (b) (b) P1 (b) (b) reaction is come out to voltage acquisition screening circuit, feedback circuit is worth from the change of the interior calculating voltage of voltage acquisition screening circuit, reflect to control chip, control chip control voltage's output valve, thereby using electricity wisely, simple structure just need not set up the protection circuit very much, good safety. (B, )
Description
Technical field
This utility model relates to charge power supply of battery technical field, particularly to a kind of Switching Power Supply.
Background technology
Switching Power Supply (English: SwitchingModePowerSupply) (also known as exchange type power or switch converters), it is a kind of high frequency device for converting electric energy; Switching Power Supply is to utilize modern power electronics technology, controls the time ratio that switching tube turns on and off, and maintains a kind of power supply of regulated output voltage.
Now in lithium ion battery charging technique, lithium ion battery has higher energy to weight ratio and energy volume ratio, memory-less effect, the how inferior advantage of repeatable charging, and service life is longer, price is also more and more lower; These features of lithium ion battery have promoted that portable product develops to less lighter direction so that select the battery-powered product of single-unit lithium-ion electric also to get more and more.
The charging modes that lithium ion battery requires is constant current constant voltage mode, for effectively utilizing battery capacity, lithium ion battery need to be charged to maximum voltage, but overvoltage charging can cause cell damage, this just requires higher control accuracy, it addition, the battery for brownout needs to carry out preliminary filling, charger is preferably with Thermal protection and guardtime, provides supplementary protection for battery; Lithium ion battery charge ratio relatively takes electricity, and needs to arrange multilamellar protection, thus lithium ion battery charge ratio is cumbersome bothersome.
Summary of the invention
In order to overcome deficiency described above, the purpose of this utility model is to provide a kind of Switching Power Supply that can carry out change in voltage output according to the situation of battery charging, and it saves power saving and safety is high.
The technical scheme in the invention for solving the technical problem is:
A kind of Switching Power Supply, is connected with battery, wherein, including the control chip gathering feedback unit, feedback information control output voltage for transmitting according to described collection feedback unit being connected; Described collection feedback unit includes the isolation circuit, voltage acquisition screening circuit and the feedback circuit that are sequentially connected with, described isolation circuit includes resistance R1 and optocoupler P1, described voltage acquisition screening circuit includes diode D1, and described feedback circuit includes operational amplifier T1.
As a kind of improvement of the present utility model, described control chip includes the drive circuit, filter circuit, circuit for power conversion and the voltage rectifying circuit that are sequentially connected with, and described drive circuit is connected with described feedback circuit.
As further improvement of the utility model, in described optocoupler P1, it is provided with light emitting diode D2 and audion D3.
Further improving as of the present utility model, described voltage acquisition screening circuit also includes the resistance R2 of ground connection.
Further improving as of the present utility model, the quantity of described isolation circuit and voltage acquisition screening circuit is one or more, and the quantity of described feedback circuit is one.
In this utility model; gather feedback unit isolation circuit in battery charging process; utilizing optocoupler P1 to control saturation, resistance R1 detects that the change of voltage, optocoupler P1 reflect to voltage acquisition screening circuit; feedback circuit calculates the changing value of voltage in voltage acquisition screening circuit; being reflected into control chip, control chip controls the output valve of voltage, thus using electricity wisely; simple in construction and need not arrange protection circuit especially, safety is good.
Accompanying drawing explanation
For ease of illustrating, this utility model is described in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is internal circuit connection figure of the present utility model;
Accompanying drawing labelling: 1-gathers feedback unit, and 11-isolates circuit, 12-voltage acquisition screening circuit, 13-feedback circuit, 2-control chip, 21-drive circuit, 22-filter circuit, 23-circuit for power conversion, 24-voltage rectifying circuit, 3-battery.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
As shown in Figure 1 and Figure 2, a kind of Switching Power Supply of the present utility model, it is connected with battery, during battery charging, this utility model carries out processing adjustment according to the situation that battery charges.
A kind of Switching Power Supply of the present utility model includes the collection feedback unit 1 being connected, the control chip 2 controlling output voltage for the feedback information transmitted according to collection feedback unit 1.
In this utility model, gather isolation circuit 11, voltage acquisition screening circuit 12 and feedback circuit 13 that feedback unit 1 includes being sequentially connected with, isolation circuit 21 includes resistance R1 and optocoupler P1, and voltage acquisition screening circuit 12 includes diode D1, and feedback circuit 13 includes operational amplifier T1.
In this utility model; gather feedback unit 1 isolation circuit 11 in battery charging process; utilizing optocoupler P1 to control saturation, resistance R1 detects that the change of voltage, optocoupler P1 reflect to voltage acquisition screening circuit 12; feedback circuit 13 calculates the changing value of voltage in voltage acquisition screening circuit 12; being reflected into control chip 2, control chip 2 controls the output valve of voltage, thus using electricity wisely; and protection circuit need not be set especially, safety is good.
This utility model provides a kind of embodiment of control chip 2, control chip 2 includes the drive circuit 21, filter circuit 22, circuit for power conversion 23 and the voltage rectifying circuit 24 that are sequentially connected with, drive circuit 21 is connected with feedback circuit 13, the voltage change that drive circuit 21 transmits according to feedback circuit 13, filtered by filter circuit 13, carry out power conversion then through circuit for power conversion 23, finally carry out the rectification of voltage rectifying circuit 24, export again, adjust.
This utility model provides a kind of embodiment of optocoupler P1, is provided with light emitting diode D2 and audion D3, is controlled the saturation of audion D3 by light emitting diode D2, test the change of current/voltage in optocoupler P1.
This utility model is in order to more ensure safety, and voltage acquisition screening circuit 12 also includes the resistance R2 of ground connection.
In this utility model, the quantity of isolation circuit 11 and voltage acquisition screening circuit 12 is one or more, and the quantity of feedback circuit 13 is one; Multiple batteries can be charged, thus being adjusted using electricity wisely simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (4)
1. a Switching Power Supply, is connected with battery, it is characterised in that include the collection feedback unit being connected, the control chip controlling output voltage for the feedback information transmitted according to described collection feedback unit; Described collection feedback unit includes the isolation circuit, voltage acquisition screening circuit and the feedback circuit that are sequentially connected with, described isolation circuit includes resistance R1 and optocoupler P1, described voltage acquisition screening circuit includes diode D1, described feedback circuit includes operational amplifier T1, described voltage acquisition screening circuit also includes the resistance R2 of ground connection, the negative supply pin of operational amplifier T1 is connected with one end of the negative pole of diode D1, resistance R2 respectively, the positive pole of diode D1 is connected with one end of optocoupler P1, the other end ground connection of resistance R2; The other end of optocoupler P1 is connected with one end of resistance R1, and the other end of resistance R1 is connected with described battery.
2. a kind of Switching Power Supply according to claim 1, it is characterised in that described control chip includes the drive circuit, filter circuit, circuit for power conversion and the voltage rectifying circuit that are sequentially connected with, and described drive circuit is connected with described feedback circuit.
3. a kind of Switching Power Supply according to claim 2, it is characterised in that be provided with light emitting diode D2 and audion D3 in described optocoupler P1.
4. a kind of Switching Power Supply according to claim 3, it is characterised in that the quantity of described isolation circuit and voltage acquisition screening circuit is one or more, and the quantity of described feedback circuit is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521051764.XU CN205283180U (en) | 2015-12-16 | 2015-12-16 | Switching power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521051764.XU CN205283180U (en) | 2015-12-16 | 2015-12-16 | Switching power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283180U true CN205283180U (en) | 2016-06-01 |
Family
ID=56067716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521051764.XU Expired - Fee Related CN205283180U (en) | 2015-12-16 | 2015-12-16 | Switching power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205283180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119834187A (en) * | 2025-03-19 | 2025-04-15 | 湖南理工职业技术学院 | Design method of industrial-grade high-voltage monitoring automatic fool-proof circuit |
-
2015
- 2015-12-16 CN CN201521051764.XU patent/CN205283180U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119834187A (en) * | 2025-03-19 | 2025-04-15 | 湖南理工职业技术学院 | Design method of industrial-grade high-voltage monitoring automatic fool-proof circuit |
| CN119834187B (en) * | 2025-03-19 | 2025-07-01 | 湖南理工职业技术学院 | A design method for an industrial-grade high-voltage monitoring automatic fool-proof circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20201216 |