CN102244383B - Power supply circuit capable of balancing load voltages - Google Patents
Power supply circuit capable of balancing load voltages Download PDFInfo
- Publication number
- CN102244383B CN102244383B CN201010171151.5A CN201010171151A CN102244383B CN 102244383 B CN102244383 B CN 102244383B CN 201010171151 A CN201010171151 A CN 201010171151A CN 102244383 B CN102244383 B CN 102244383B
- Authority
- CN
- China
- Prior art keywords
- voltage
- load
- power supply
- loads
- inductance
- 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.)
- Active
Links
Images
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a power supply circuit capable of balancing load voltages. The power supply circuit is used for supplying power to a plurality of loads, and comprises a power supply, a filtering module and a voltage balancing module, wherein the filtering module is used for filtering high frequency noises from voltage or current output by the power supply; the voltage balancing module is positioned between the filtering module and the plurality of loads and used for balancing the voltages of the plurality of loads, and comprises a plurality of inductors of which each is positioned between two loads; and when the voltages of the two loads are unbalanced, the inductor positioned between the two loads generates the current to balance the voltages of the two loads. The power supply circuit capable of balancing the load voltages can balance the voltages of each load when the loads have different impedances.
Description
Technical field
The present invention relates to a kind of power supply circuits, particularly relate to a kind of power supply circuits of load voltage equilibrium.
Background technology
At present, general industrial power supply or other power supply circuits, multiple power consumption loads that same power supply is often in parallel, and be respectively its power supply.As shown in Figure 1, for the circuit diagram of power supply circuits in prior art 1, generally, before power supply 10 is load supplying, voltage or the electric current that need to export power supply 10 carry out filtering, and common way adds respectively an electric capacity between power supply 10 and load, as shown in Figure 1, between power supply 10 anodal 101 and the anodal P1 of load R1, add a capacitor C 1, between power supply 10 anodal 101 and the anodal P2 of load R2, add a capacitor C 2.In general, capacitor C 1 is identical with the capacitor value of C2, although add an electric capacity, voltage or electric current have been carried out to filtering, but can cause another problem, due to unequally loaded impedance difference, cause capacitor C 1 and the resistance value of load R1 can be different with the resistance value of load R2 with capacitor C 2, the electric current that flows through capacitor C 1 and load R1 can be with to flow through capacitor C 2 different with the electric current of load R2, thereby so capacitor C 1, voltage that C2 divided are different, cause load R1 and the different voltage that finally causes the load with different resistance values of pressure drop of load R2 can be unbalanced.
Summary of the invention
The invention provides a kind of power supply circuits that can equally loaded voltage, voltage that can balanced each load.
A kind of power supply circuits that can equally loaded voltage, for some loads are powered, comprise power supply, filtration module, voltage balancing module, high frequency noise among voltage or electric current that this filtration module is exported for filter out power, this voltage balancing module is between filtration module and some loads, for the voltage of balanced these some loads, wherein this voltage balancing module comprises some inductance, each inductance is between every two loads, when two load voltages are unbalanced, inductance between these two loads produces an electric current and the voltage of balanced these two loads.
Power supply circuits that can equally loaded voltage of the present invention, can be when load impedance be different, the voltage of balanced each load.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of power supply circuits in prior art.
Fig. 2 is the circuit block diagram of power supply circuits that can equally loaded voltage in an embodiment of the present invention.
Fig. 3 is the physical circuit figure of power supply circuits that can equally loaded voltage in an embodiment of the present invention.
Main element symbol description
| |
1，2 |
| |
10 |
| |
20 |
| |
30 |
| Electric capacity | C1，C2 |
| Inductance | L1 |
| Load | R1，R2，Rn |
| Anodal | 101，P1，P2 |
Embodiment
Referring to Fig. 2, is the circuit block diagram of power supply circuits 2 that can equally loaded voltage in an embodiment of the present invention.Compared with prior art power supply circuits 2, the power supply circuits 2 in an embodiment of the present invention comprise power supply 10, filtration module 20, voltage balancing module 30, and some load R1～Rn.Filtration module 20 carries out filtering for voltage or electric current that power supply 10 is exported, thereby the high frequency noise in voltage or electric current that filter out power 10 is exported, voltage balancing module 30 is between filtration module 20 and some load R1～Rn, for the voltage of balanced these some load R1～Rn, make the voltage of load R1～Rn equate.
Seeing also Fig. 3, is the physical circuit figure of power supply circuits 2 that can equally loaded voltage in an embodiment of the present invention.In the present embodiment, these some load R1～Rn describe as an example of two load R1, R2 example.
As previously mentioned, when the impedance of load R1 and load R2 is not identical, the voltage that the positive pole 101 of power supply 10 is exported causes capacitor C 1 and the resistance value of load R1 can be different with the resistance value of load R2 with capacitor C 2, the electric current that flows through capacitor C 1 and load R1 can be with to flow through capacitor C 2 different with the electric current of load R2, thereby capacitor C 1, voltage that C2 divided are different, causes the pressure drop of load R1 and load R2 different.In the present embodiment, because inductance L 1 is connected across between the anodal P1 of load R1 and the anodal P2 of load R2, when the pressure drop of load R1 and load R2 is unequal, can make inductance L 1 two ends form a pressure drop and make inductance L 1 produce an electric current, the electric voltage equalization of load low with voltage load high voltage is arrived identical.
In order to illustrate further the present invention, establishing capacitor C 1 is below 10 ohm with the impedance of C2, the impedance of load R1, R2 is respectively 10 ohm, 20 ohm, the voltage of power supply 10 is 30V (volt), when there is no inductance L 1, do the used time, Yi Zhi, flowing through capacitor C 1 is 1.5A (ampere) with the electric current of load R1, thereby the voltage that capacitor C 1 is divided is 15V, the voltage of load R1 is 30-15=15V, the electric current that flows through capacitor C 2 is 1A, thereby the voltage that capacitor C 2 is divided is 10V, and the voltage of load R2 is 30-10=20V.Thereby between load R2 and R1, form the pressure drop of a 5V, and make inductance L 1 produce an electric current that flows to load R1, thereby increase electric current the corresponding voltage that increases load R1 of load R1, until the electric voltage equalization of the voltage of load R1 and load R2 and no current in inductance L 1 is flow through.
Yi Zhi, in the present embodiment, the number of this load is not limited to two, and the number of electric capacity and the number of load that this filtration module 20 is included are consistent, and this voltage balancing module 30 comprises multiple inductance L 1, and each inductance is all connected across between every two loads.The electrical appliances such as in the present embodiment, this power supply 10 is transformer, and this load is fluorescent tube.
Claims (4)
- One kind can equally loaded voltage power supply circuits, for some loads are powered, comprise power supply, filtration module, the high frequency noise among voltage or electric current that this filtration module is exported for filter out power, it is characterized in that, the power supply circuits that this can equally loaded voltage also comprise:Voltage balancing module, between filtration module and some loads, for the voltage of balanced these some loads;Wherein, this filtration module comprises some electric capacity, and the number of this electric capacity is identical with the number of load, all also electrical connections with it respectively between the positive pole of power supply and the positive pole of a load of each electric capacity; This voltage balancing module comprises some inductance, each inductance between the positive pole of every two loads and the two ends of inductance be connected respectively with the positive pole of these two loads, when two load voltages are unbalanced, the inductance between the positive pole of these two loads produces an electric current and the voltage of balanced these two loads.
- 2. power supply circuits that can equally loaded voltage as claimed in claim 1, it is characterized in that, when two load voltages are unbalanced, the low load of current direction voltage that inductance between these two loads produces, thus increase the electric current of the load that this voltage is low and increase the voltage of the load that this voltage is low and make the electric voltage equalization of two loads accordingly.
- 3. power supply circuits that can equally loaded voltage as claimed in claim 1, is characterized in that, this load is fluorescent tube.
- 4. power supply circuits that can equally loaded voltage as claimed in claim 1, is characterized in that, this power supply is transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171151.5A CN102244383B (en) | 2010-05-13 | 2010-05-13 | Power supply circuit capable of balancing load voltages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171151.5A CN102244383B (en) | 2010-05-13 | 2010-05-13 | Power supply circuit capable of balancing load voltages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102244383A CN102244383A (en) | 2011-11-16 |
| CN102244383B true CN102244383B (en) | 2014-04-23 |
Family
ID=44962299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010171151.5A Active CN102244383B (en) | 2010-05-13 | 2010-05-13 | Power supply circuit capable of balancing load voltages |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102244383B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883796A (en) * | 1997-04-07 | 1999-03-16 | Wisconsin Alumni Research Foundation | Dynamic series voltage restoration for sensitive loads in unbalanced power systems |
| CN1424796A (en) * | 2001-12-13 | 2003-06-18 | 麦格尼特公司 | Supply method and circuit for current shared modules |
| CN101707838A (en) * | 2009-12-04 | 2010-05-12 | 英飞特电子（杭州）有限公司 | Multipath LED constant current drive circuit suitable for non-isolated converter |
-
2010
- 2010-05-13 CN CN201010171151.5A patent/CN102244383B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883796A (en) * | 1997-04-07 | 1999-03-16 | Wisconsin Alumni Research Foundation | Dynamic series voltage restoration for sensitive loads in unbalanced power systems |
| CN1424796A (en) * | 2001-12-13 | 2003-06-18 | 麦格尼特公司 | Supply method and circuit for current shared modules |
| CN101707838A (en) * | 2009-12-04 | 2010-05-12 | 英飞特电子（杭州）有限公司 | Multipath LED constant current drive circuit suitable for non-isolated converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102244383A (en) | 2011-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107424784B (en) | Transformer and circuit | |
| CN101577485B (en) | Wide band filter | |
| CN104579241B (en) | Programmable filter | |
| CN103368377A (en) | Preceding-stage EMI filtering protective circuit of driving power source | |
| KR102258463B1 (en) | Transformer | |
| TW201505337A (en) | Charge pump and method of having negative output voltage tracking positive output voltage thereof | |
| CN105703621B (en) | Tri- level Buck converter of ISOP and neutral-point potential balance control method | |
| CN102244383B (en) | Power supply circuit capable of balancing load voltages | |
| CN205544912U (en) | Stereo set power input circuit | |
| CN102497086A (en) | Parallel current-equalizing circuit | |
| CN103178696B (en) | Power circuit | |
| US9513339B2 (en) | Device and method for equalizing current drain from a battery stack | |
| CN203708103U (en) | Electromagnetic interference (EMI) filter and switching power supply | |
| CN213402820U (en) | EMI multistage filter circuit for electric vehicle motor controller | |
| CN104410273A (en) | Simple and easy flow equalization scheme of parallel system | |
| CN203761256U (en) | Three-level power supply noise dedicated filter | |
| CN107969054A (en) | LED drive power, the control method of electric power output voltage and LED lamp | |
| CN208316565U (en) | Electric source filter circuit | |
| CN209374246U (en) | A kind of inductor, filter circuit and functional circuit | |
| CN201611873U (en) | Noise filtering circuit | |
| CN102833939A (en) | Capacitor performance optimization method and circuit board designed by applying same | |
| CN107528466B (en) | A kind of EMI filter circuit | |
| CN107437896A (en) | Constant voltage power supply circuit and electromagnetic contactor | |
| CN207115400U (en) | A kind of RS 485 telecommunication circuits of servo drive system | |
| CN104617791A (en) | Loudspeaker box power amplifier power supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUBEI LIANGYUAN ELECTRIC POWER ENERGY CO., LTD. Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY (SHENZHEN) CO., LTD. Effective date: 20150702 Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY CO., LTD. Effective date: 20150702 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150702 Address after: 430079 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 312 East Building four or five research layer 4121, 5101, 5102 room Patentee after: HUBEI LIANGYUAN ELECTRIC POWER ENERGY CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Patentee before: Hon Hai Precision Industry Co., Ltd. |