CN203522527U - Power supply system with switching power supplies connected in parallel - Google Patents
Power supply system with switching power supplies connected in parallel Download PDFInfo
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- CN203522527U CN203522527U CN201320327056.9U CN201320327056U CN203522527U CN 203522527 U CN203522527 U CN 203522527U CN 201320327056 U CN201320327056 U CN 201320327056U CN 203522527 U CN203522527 U CN 203522527U
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Abstract
The utility model relates to a power supply system with switching power supplies connected in parallel and belongs to the field of power supply systems, which comprises a control circuit, a DC/DC module I, a DC/DC module II, a key module, a display module, a current detecting and conditioning circuit I, a current detecting and conditioning circuit II and a voltage detecting and conditioning circuit. The DC/DC module I and the DC/DC module II are connected with the control circuit through the current detecting and conditioning circuit I and the current detecting and conditioning circuit II respectively, wherein an input voltage (Uin) is adopted as the voltage input of the two parallelly connected DC/DC modules. The output voltage (Uout) is connected with the control circuit through the voltage detecting and conditioning circuit. The key module and the display module are also connected with the control circuit. According to the technical scheme of the utility model, the power supply system has the advantages of simple structure and convenient usage. By means of the key module, the output current ratio of the system can be arbitrarily adjusted to fluctuate within a certain range. By means of the DC/DC modules, the variation of the output voltage is enabled. Meanwhile, the display module enables the human-computer interaction.
Description
Technical field
The utility model relates to a kind of switch power parallel electric power system, belongs to power-supply system field.
Background technology
Some special occasions, for guaranteeing power supply reliability, prevents from causing the damage of power consumption equipment or bringing loss to using electricity system because of the unexpected damage of power supply or circuit, usually needs to arrange backup battery, and the most frequently used is to adopt double power supply parallel power supply.Basic demand for two module parallel running power modules has two: the one, and when load or input voltage variation, it is stable that output voltage keeps; The 2nd, control the output current of each module, to realize load current on average or automatically distribute in proportion, electric current dynamic response is good.
Some occasion need to arrange the current value of two switch power modules and power with certain proportion, and different application occasion needs different output voltage values.And current existing switch power module parallel operation system, great majority can only be exported with fixed voltage.As utility model patent " a kind of voltage-stabilizing switch power source module parallel current-sharing electric power system " (patent No.: 201120391037.3) and " a kind of switch power parallel electric supply installation " (patent No.: 201120527069.1) its output voltage is fixed value 8V, it is finite value that current ratio regulates value.
Summary of the invention
The utility model provides a kind of switch power parallel electric power system, for solving single power supply, causes power supply instability and common parallel operation system voltage is non-adjustable, electric current can not be pro rata distributed problem.
The technical solution of the utility model is: a kind of switch power parallel electric power system, comprises control circuit 1, DC/DC module I 21, DC/DC module II 22, key-press module 3, display module 4, current detecting modulate circuit I 51, current detecting Circuit tuning II 52, voltage detecting modulate circuit 6; Wherein with U
iNtwo DC/DC module I 21 in parallel as voltage input are connected with control circuit 1 with current detecting modulate circuit II 52 by current detecting modulate circuit I 51 respectively with DC/DC module II 22, by voltage detecting modulate circuit 6, connect U
oUTwith control circuit 1, key-press module 3, display module 4 are connected with control circuit 1.
Described control circuit 1 comprises and has solidified single-chip microcomputer 7, parallel port download port 8, clock circuit 9, power circuit 10, the reset circuit 11 with forced balanced current function code in parallel; Wherein parallel port download port 8, clock circuit 9, power circuit 10, reset circuit 11 are connected with the corresponding pin of single-chip microcomputer 7 respectively.
The core of described DC/DC module I 21, DC/DC module II 22 is LM2596 chip.
Described key-press module 3 comprises for mode setting key in show state or adjustment state is set, for regulating "+" button and the "-" button of current ratio under adjustment state.
During use, input voltage signal U
iN, as the input of DC/DC module I 21 and DC/DC module II 22; DC/DC module I 21 output currents, after current detecting modulate circuit I 51 detects, feed back to control circuit 1, and DC/DC module II 22 output currents, after current detecting modulate circuit II 52 detects, feed back to control circuit 1; Control circuit 1 by key-press module 3(by "+" button of regulating key module 3, the ratio excursion that "-" button makes electric current is relatively: the given current ratio 0.1～10) setting and the ratio feeding back by DC/DC module I/II, calculate control signal, and will control pwm signal and be added in the Feedback terminal of LM2596, the voltage swing variation of Feedback terminal can cause the output voltage of this DC module to change, thereby caused the variation of this blocks current, reached the object of the ratio of output current; The U of DC/DC module I 21 and DC/DC module II 22
oUTcan by regulator potentiometer change output voltage size (by regulating the potentiometer in DC/DC module I 21, DC/DC module II 22 to realize the adjustable of output voltage, its excursion is in theory: 1.2V～37V ± 4%), U
oUTthrough voltage detecting modulate circuit 6, feed back to control circuit 1, control circuit 1 detects after voltage signal, magnitude of voltage is delivered to display module 4 and show; Key-press module 3 control signals send to control circuit 1, as control inputs, the display of display module 4 reception control circuits 1, as showing output, by key-press module 3, system can be set in display mode and adjusting pattern, under display mode, display module 4 shows output current and the output voltage of DC/DC module I/II; Under adjusting pattern, display module 4 shows the ratio that electric current is set.
The beneficial effects of the utility model are: simple in structure, easy to use; By key-press module arbitrarily regulation output current ratio fluctuate within the specific limits, by DC/DC module, can realize the variation of output voltage, simultaneously by providing display module to realize man-machine interaction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is two DC/DC module parallel circuits figure of the present utility model;
Fig. 3 is control circuit figure of the present utility model;
Fig. 4 is power circuit diagram of the present utility model;
Fig. 5 is reset circuit figure of the present utility model;
Fig. 6 is display module circuit diagram of the present utility model;
Fig. 7 is key-press module circuit diagram of the present utility model;
Fig. 8 is current detecting modulate circuit I figure of the present utility model;
Fig. 9 is current detecting modulate circuit II figure of the present utility model;
Figure 10 is voltage detecting conditioning modulate circuit figure of the present utility model;
Each label in figure: 1 is that control circuit, 21 is that DC/DC module I, 22 is that DC/DC module II, 3 is that key-press module, 4 is that display module, 51 is that current detecting modulate circuit I, 52 is that current detecting Circuit tuning II, 6 is that voltage detecting modulate circuit, 7 is that single-chip microcomputer, 8 is that parallel port download port, 9 is that clock circuit, 10 is that power circuit, 11 is reset circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but content of the present utility model is not limited to described scope.
Embodiment 1: as Figure 1-10 shows, a switch power parallel electric power system, comprises control circuit 1, DC/DC module I 21, DC/DC module II 22, key-press module 3, display module 4, current detecting modulate circuit I 51, current detecting Circuit tuning II 52, voltage detecting modulate circuit 6; Wherein with U
iNtwo DC/DC module I 21 in parallel as voltage input are connected with control circuit 1 with current detecting modulate circuit II 52 by current detecting modulate circuit I 51 respectively with DC/DC module II 22, by voltage detecting modulate circuit 6, connect U
oUTwith control circuit 1, key-press module 3, display module 4 are connected with control circuit 1.Described control circuit 1 comprises and has solidified single-chip microcomputer 7, parallel port download port 8, clock circuit 9, power circuit 10, the reset circuit 11 with forced balanced current function code in parallel; Wherein parallel port download port 8, clock circuit 9, power circuit 10, reset circuit 11 are connected with the corresponding pin of single-chip microcomputer 7 respectively; The core of described DC/DC module I 21, DC/DC module II 22 is LM2596 chip, and by regulating the potentiometer in DC/DC module I 21, DC/DC module II 22 to realize the adjustable of output voltage, its excursion is in theory: 1.2V～37V ± 4%; Described key-press module 3 comprises for mode setting key in show state or adjustment state is set, for regulating "+" button and the "-" button of current ratio under adjustment state, is: 0.1～10 by "+" button of regulating key module 3, the ratio excursion that "-" button makes electric current.
Claims (4)
1. a switch power parallel electric power system, is characterized in that: comprise control circuit (1), DC/DC module I (21), DC/DC module II (22), key-press module (3), display module (4), current detecting modulate circuit I (51), current detecting Circuit tuning II (52), voltage detecting modulate circuit (6); Wherein with U
iNtwo DC/DC module I (21) in parallel as voltage input are connected with control circuit (1) with current detecting modulate circuit II (52) by current detecting modulate circuit I (51) respectively with DC/DC module II (22), by voltage detecting modulate circuit (6), connect U
oUTand control circuit (1), key-press module (3), display module (4) are connected with control circuit (1).
2. switch power parallel electric power system according to claim 1, is characterized in that: described control circuit (1) comprises single-chip microcomputer (7), parallel port download port (8), clock circuit (9), power circuit (10), reset circuit (11); Wherein parallel port download port (8), clock circuit (9), power circuit (10), reset circuit (11) are connected with the corresponding pin of single-chip microcomputer (7) respectively.
3. switch power parallel electric power system according to claim 1, is characterized in that: the core of described DC/DC module I (21), DC/DC module II (22) is LM2596 chip.
4. switch power parallel electric power system according to claim 1, is characterized in that: described key-press module (3) comprises for mode setting key in show state or adjustment state is set, for regulating "+" button and the "-" button of current ratio under adjustment state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320327056.9U CN203522527U (en) | 2013-06-07 | 2013-06-07 | Power supply system with switching power supplies connected in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320327056.9U CN203522527U (en) | 2013-06-07 | 2013-06-07 | Power supply system with switching power supplies connected in parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522527U true CN203522527U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320327056.9U Expired - Fee Related CN203522527U (en) | 2013-06-07 | 2013-06-07 | Power supply system with switching power supplies connected in parallel |
Country Status (1)
| Country | Link |
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| CN (1) | CN203522527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119483A (en) * | 2015-09-06 | 2015-12-02 | 浪潮(北京)电子信息产业有限公司 | Switching power source parallel system |
-
2013
- 2013-06-07 CN CN201320327056.9U patent/CN203522527U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119483A (en) * | 2015-09-06 | 2015-12-02 | 浪潮(北京)电子信息产业有限公司 | Switching power source parallel system |
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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 |
Granted publication date: 20140402 Termination date: 20150607 |
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| EXPY | Termination of patent right or utility model |