CN202524295U - Multi-level balancing circuit - Google Patents
Multi-level balancing circuit Download PDFInfo
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- CN202524295U CN202524295U CN 201120566810 CN201120566810U CN202524295U CN 202524295 U CN202524295 U CN 202524295U CN 201120566810 CN201120566810 CN 201120566810 CN 201120566810 U CN201120566810 U CN 201120566810U CN 202524295 U CN202524295 U CN 202524295U
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Abstract
The present utility model discloses a multi-level balancing circuit. The balancing circuit comprises an input circuit, a transformer and a plurality of balanced voltage output circuits, the transformer comprises a primary winding and a plurality of secondary windings; one end of the input circuit is connected with an input power supply anode, the other end is connected with an input power supply cathode; the input circuit comprises a switching tube, and the primary winding of the transformer connected with the switching tube; each balanced voltage output circuit comprises a rectifier diode, a balanced capacitor and one secondary winding of the transformer, the secondary winding is connected with an output end of the balanced voltage output circuit after being connected with the rectifier diode in series, two ends of the balanced capacitor are respectively connected with two output ends of the balanced voltage output circuit; and the secondary winding is a normal shock output winding, and the secondary winding and a dotted terminal of the primary winding of the transformer are connected with an anode of the balanced capacitor. The multi-level balancing circuit is high in reliability of can suit large dynamic and rapid balancing.
Description
[technical field]
The utility model relates to multi-level circuit, relates in particular to a kind of many balances of power level circuit.
[background technology]
In the mesohigh circuit; The withstand voltage of components and parts such as most conventional electric capacity, power tube or material is limited; Can't directly bear the high pressure of mesohigh circuit, extremely low as directly being used in the mesohigh circuit reliability property, some can directly bear the extraordinary device and the special material of these high pressure; Expensive, cost is high.In order to address this problem; Industry has been used three level and multistage mode than the low level voltage series connection in a large number; With high pressure converted is multistage low voltage; So that normally use lower device of withstand voltage rank and material, reduce voltage, power consumption iso-stress on the power tube, realize circuit design feasibility, improve reliability, purpose such as reduce cost.
Owing to be composed in series high-tension circuit through many low voltage voltage level, for example many low-voltage capacitances Voltage Series is formed high withstand voltage capacitance group; Then necessary special auxiliary circuit; The voltage of each low level cell of balance prevents that any one low voltage unit voltage is out of control, prevents that particularly the voltage of local depression unit from uprising; The device voltage that exceeds this low voltage unit bears, and damages low-voltage device.
The voltage with multiple levels balancing circuitry that industry has a lot of modes for example uses circuit such as series resistance dividing potential drop, and power consumption is big; A little less than the balanced capacity, perhaps use the special-purpose equalizing circuit of complicated many level, the complicated circuit reliability is low; Cost is higher, and the power capability that balance can provide is limited.And these voltage balancing circuits, all be difficult to adapt to the balance that big dynamic multivoltage is fast connected.The voltage with multiple levels progression that the special-purpose equalizing circuit of many level adapts to is very limited, generally limits to three level, four level finite progressions, and more multistage several multi-level circuit designs become increasingly complex, and reliability continues to reduce, cost sharply rises.
[summary of the invention]
It is high that the technical problem that the utility model will solve provides a kind of reliability, can adapt to many balances of power level circuit of big dynamically quick balance.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is, a kind of many balances of power level circuit comprises input circuit, transformer and a plurality of balanced voltage output circuit, and described transformer comprises former limit winding and a plurality of secondary winding; The one termination input positive source of described input circuit, another termination input power cathode; Described input circuit comprises the former limit winding of switching tube and the said transformer that is connected with switching tube; Each described balanced voltage output circuit comprises the secondary winding of rectifier diode, balancing capacitance and 1 said transformer; Described secondary winding and the output that connects the balanced voltage output circuit after rectifier diode is connected, the two ends of said balancing capacitance connect two outputs of balanced voltage output circuit respectively; Described secondary winding is a normal shock output winding, the positive pole of the termination balancing capacitance of the same name of the former limit of secondary winding and transformer winding.
Above-described many balances of power level circuit, described balanced voltage output circuit comprises current-limiting resistance, described secondary winding and the output that connects the balanced voltage output circuit after rectifier diode, current-limiting resistance are connected.
Above-described many balances of power level circuit; Each described balanced voltage output circuit comprises current-limiting inductance and fly-wheel diode; The negative electrode of one termination rectifier diode of said current-limiting inductance, first output of the said balanced voltage output circuit of another termination of current-limiting inductance; The anode of fly-wheel diode connects second end of secondary winding, and the negative electrode of fly-wheel diode connects the negative electrode of rectifier diode.
Above-described many balances of power level circuit, the balancing capacitance of each balanced voltage output circuit is connected by polarity successively, the anodal termination input positive source of the balancing capacitance series circuit that series connection forms, the negative pole termination input power cathode of balancing capacitance series circuit.
Above-described many balances of power level circuit, described switching tube is connected in series with the former limit winding of said transformer.
Above-described many balances of power level circuit comprises first resonant capacitance and second resonant capacitance, and described switching tube comprises first switching tube and second switch pipe; First switching tube and the both positive and negative polarity that connects the input power supply after the second switch pipe is connected connect the both positive and negative polarity of input power supply after first resonant capacitance and the series connection of second resonant capacitance; First termination, first switching tube of the former limit of transformer winding and the tie point between the second switch pipe, the tie point between second termination, first resonant capacitance and second resonant capacitance.
Above-described many balances of power level circuit, described switching tube are 4, and 4 switching tubes constitute full-bridge circuit, the both positive and negative polarity of the input termination input power supply of full-bridge circuit, the former limit winding of output termination transformer.
Above-described many balances of power level circuit; Comprise circuit of reversed excitation; Described circuit of reversed excitation comprises anti-swash auxiliary winding and diode; Describedly anti-swash auxiliary winding through transformer core and the former limit of transformer winding coupled, the anti-number of turn that swashs auxiliary winding equals the number of turn of the former limit of transformer winding, instead swashs that to assist first end of winding be the end of the same name of the former limit of transformer winding positive terminal; The anti-anode that swashs second terminating diode of auxiliary winding, the negative electrode of diode connects the input positive source, anti-first termination input power cathode that swashs auxiliary winding.
Many balances of power level of the utility model circuit structure is simple, reliability is high, solves big electric current, the many balances of power level when dynamic greatly, high-power preferably, and can solve many balances of power level of any level.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the circuit theory diagrams of many balances of power level of the utility model circuit embodiments 1.
Fig. 2 is the circuit theory diagrams of many balances of power level of the utility model circuit embodiments 2.
Fig. 3 is the circuit theory diagrams of many balances of power level of the utility model circuit embodiments 3.
Fig. 4 is the circuit theory diagrams of many balances of power level of the utility model circuit embodiments 4.
Fig. 5 is the circuit theory diagrams of many balances of power level of the utility model circuit embodiments 5.
Fig. 6 is the circuit theory diagrams of many balances of power level of the utility model circuit embodiments 6.
[embodiment]
In many balances of power level of the utility model circuit embodiments 1 shown in Figure 1, comprise input circuit, transformer and N balanced voltage output circuit.
Transformer T1 comprises former limit winding N0 and N secondary winding N1-NN; Input circuit comprises the former limit winding N0 of switching tube Q1 and transformer T1; The input circuit one termination input positive source that constitutes after switching tube Q1 connects with the former limit of transformer T1 winding N0, another termination input power cathode.Each balanced voltage output circuit comprises the secondary winding (N1-NN) of 1 rectifier diode D (D1-DN), 1 balancing capacitance C (C1-CN) and 1 transformer T1.
The secondary winding is connected with rectifier diode D; The anode of the first termination rectifier diode D of secondary winding; Second output of the second termination balanced voltage output circuit of secondary winding; The negative electrode of rectifier diode D connects first output of balanced voltage output circuit, and the two ends of balancing capacitance C connect two outputs of balanced voltage output circuit respectively.
The secondary winding is a normal shock output winding, and the positive terminal of first end of secondary winding and the former limit of transformer T1 winding N0 is an end of the same name, so the balanced voltage output circuit of present embodiment is a forward converter.
The balancing capacitance C of N balanced voltage output circuit (C1-CN) connects by polarity successively, the anodal termination input positive source of the balancing capacitance C series circuit that series connection forms, the negative pole termination input power cathode of balancing capacitance C series circuit.
The input voltage of input power supply is U0, and the balanced voltage of the output of each balanced voltage output circuit is respectively U1, U2 ... UN.
The number of turn on the former limit of transformer T1 is N0, and each secondary umber of turn of corresponding voltage with multiple levels is for being respectively N1, N2 ... NN.The turn ratio N0/N1 of former secondary equals or less times greater than U0/U1, analogizes the turn ratio N0/N2 of former secondary with this same rule, equal or less times greater than U0/U2 ... UN.If the transformer transfer circuit of half-bridge, the corresponding minimizing of secondary umber of turn is half the.
When the work of this transformer T1 energy and voltage transfer circuit, the voltage of each secondary output will equal or be slightly less than the balanced voltage of the corresponding connection of institute.If the imbalance of the balanced voltage of certain balance branch road causes being lower than the balanced voltage of design, the corresponding secondary winding of forward converter just offers the balance of design voltage (or a little bit smaller a little) and uses voltage, to recover normal voltage.
If the imbalance of the balanced voltage of certain balance branch road causes being higher than the balanced voltage of design; Can cause other road balanced voltages to be lower than design voltage; Corresponding other the corresponding road secondary windings of forward converter; Just offer the balanced voltage of corresponding design voltage (or a little bit smaller a little), reduced imbalance simultaneously and caused high-tension balance branch road, recover normal voltage.
Through the compensation of above dynamic electric voltage and energy, can keep the balance of voltage of multi-level circuit all the time.Balance of power level circuit balancing and bucking voltage ability size can be adjusted through the size of design normal shock transformer T1 power output.
The topology of transformer energy and voltage transfer circuit; Can have the distortion of any isolated topology and corresponding topological circuit now; For example use forward converter; And forward converter can be a distortion forward converter any in the prior art category, for example gives the most basic extra increase degaussing of forward converter coiling, clamp circuit, filter inductance, fly-wheel diode, filter capacitor etc.
Circuit topology can be normal shock but be not limited to winding such as normal shock, can be normal shock, full-bridge, half-bridge, recommend, topology basically or normal shock, full-bridge, the half-bridge of any Switching Power Supplies such as phase-shifting full-bridge, LLC, LCC, recommend, arbitrary distortion circuit topology of circuit such as phase-shifting full-bridge, LLC, LCC.The secondary winding of transformer is used winding except balanced voltage, and other purposes windings can be arranged.
Transformer can increase the auxiliary extra winding outside the non-equilibrium voltage; Constitute positive activation type or reverse excitation circuit,, can constitute closed loop with power supply outside the non-equilibrium road for other circuit outside the non-equilibrium road provide power supply; Also can constitute open loop, look electrical design and decide.
Some distressed structures of the utility model are shown in following examples.
Many balances of power level of the utility model circuit embodiments 2 shown in Figure 2 is that with the difference of embodiment 1 each balanced voltage output circuit comprises 1 current-limiting resistance R (R-RN), and current-limiting resistance R and secondary winding, rectifier diode D form series circuit.Current-limiting resistance R can prevent that immediate current is excessive, burns related devices such as diode.
The input circuit of many balances of power level of the utility model circuit embodiments 3 shown in Figure 3 comprises circuit of reversed excitation; Circuit of reversed excitation comprises anti-swash auxiliary winding N01 and diode DF; Anti-sharp auxiliary winding N01 is through transformer T1 iron core and the former limit of transformer T1 winding N0 coupling; The anti-number of turn that swashs auxiliary winding N01 equals the number of turn of the former limit of transformer T1 winding N0, and anti-first end that swashs auxiliary winding N01 is the end of the same name of the former limit of transformer T1 winding N0 positive terminal.The anti-anode that swashs the second terminating diode DF of auxiliary winding N01, the negative electrode of diode DF connects the input positive source, anti-first termination input power cathode that swashs auxiliary winding N01.
Many balances of power level of the utility model circuit embodiments 4 shown in Figure 4 is that each balanced voltage output circuit has current limliting inductance L (L1-LN), rectifier diode D (D1-DN) and sustained diode X (DX1-DXN) with the main distinction of embodiment 3.The anode of the first termination rectifier diode D of secondary winding,, the negative electrode of rectifier diode D connects first output of balanced voltage output circuit through current-limiting inductance L; The anode of the second termination sustained diode X of secondary winding, the negative electrode of sustained diode X connects the negative electrode of rectifier diode D.The two ends of balancing capacitance C (C1-CN) connect two outputs of balanced voltage output circuit respectively.Current-limiting inductance L can prevent that immediate current is excessive, burns related devices such as diode.
The input circuit of many balances of power level of the utility model circuit embodiments 5 shown in Figure 5 is the half-bridge topological structure, comprises the first resonant capacitance C1, the first resonant capacitance C2, the first switching tube Q1 and second switch pipe Q2; The first switching tube Q1 and the both positive and negative polarity that connects the input power supply after second switch pipe Q2 connects connect the both positive and negative polarity of input power supply after the first resonant capacitance C1 and the first resonant capacitance C2 series connection; First termination, the first switching tube Q1 of the former limit of transformer winding N0 and the tie point between the second switch pipe Q2, the tie point between second termination, the first resonant capacitance C1 and the first resonant capacitance C2.
The input circuit of many balances of power level of the utility model circuit embodiments 6 shown in Figure 6 is the half-bridge topological structure; 4 switching tube Q1-Q4 constitute full-bridge circuit; The both positive and negative polarity of the input termination input power supply of full-bridge circuit, the two ends of the former limit winding N0 of output termination transformer.
The above embodiment of the utility model has following advantage:
1, two MOS of double-end normal shock are easy to the accessory power supply of realizing that high pressure is imported.
2, circuit is very simple, can realize the balance of three level even N level.
3, integrated accessory power supply of while.
4, the winding of balance of power level, the while has been realized the function of clamping again.
5, under the fine normal condition of balance of power level property up and down, the forward converter energy delivered is very little, is the feedback loop of an open loop for balancing circuitry, is the circuit of closed loop for the branch road of normal output, normal voltage output.
Claims (8)
1. balance of power level circuit more than a kind is characterized in that, comprises input circuit, transformer and a plurality of balanced voltage output circuit, and described transformer comprises former limit winding and a plurality of secondary winding; The one termination input positive source of said input circuit, another termination input power cathode; Described input circuit comprises the former limit winding of switching tube and the said transformer that is connected with switching tube; Each described balanced voltage output circuit comprises the secondary winding of rectifier diode, balancing capacitance and 1 said transformer; Described secondary winding and the output that connects the balanced voltage output circuit after rectifier diode is connected, the two ends of said balancing capacitance connect two outputs of balanced voltage output circuit respectively; Described secondary winding is a normal shock output winding, the positive pole of the termination balancing capacitance of the same name of the former limit of secondary winding and transformer winding.
2. many balances of power level circuit according to claim 1 is characterized in that, described balanced voltage output circuit comprises current-limiting resistance, described secondary winding and the output that connects the balanced voltage output circuit after rectifier diode, current-limiting resistance are connected.
3. many balances of power level circuit according to claim 1; It is characterized in that; Each described balanced voltage output circuit comprises current-limiting inductance and fly-wheel diode; The negative electrode of one termination rectifier diode of said current-limiting inductance, first output of the said balanced voltage output circuit of another termination of current-limiting inductance; The anode of fly-wheel diode connects second end of secondary winding, and the negative electrode of fly-wheel diode connects the negative electrode of rectifier diode.
4. many balances of power level circuit according to claim 1; It is characterized in that; The balancing capacitance of each balanced voltage output circuit is connected by polarity successively, the anodal termination input positive source of the balancing capacitance series circuit that series connection forms, the negative pole termination input power cathode of balancing capacitance series circuit.
5. many balances of power level circuit according to claim 1 is characterized in that, described switching tube is connected in series with the former limit winding of said transformer.
6. many balances of power level circuit according to claim 1 is characterized in that, comprises first resonant capacitance and second resonant capacitance, and described switching tube comprises first switching tube and second switch pipe; First switching tube and the both positive and negative polarity that connects the input power supply after the second switch pipe is connected connect the both positive and negative polarity of input power supply after first resonant capacitance and the series connection of second resonant capacitance; First termination, first switching tube of the former limit of transformer winding and the tie point between the second switch pipe, the tie point between second termination, first resonant capacitance and second resonant capacitance.
7. many balances of power level circuit according to claim 1 is characterized in that, described switching tube is 4, and 4 switching tubes constitute full-bridge circuit, the both positive and negative polarity of the input termination input power supply of full-bridge circuit, the former limit winding of output termination transformer.
8. many balances of power level circuit according to claim 1; It is characterized in that; Comprise circuit of reversed excitation, described circuit of reversed excitation comprises anti-swash auxiliary winding and diode, and described anti-sharp auxiliary winding is through transformer core and the former limit of transformer winding coupled; The anti-number of turn that swashs auxiliary winding equals the number of turn of the former limit of transformer winding, and anti-first end that swashs auxiliary winding is the end of the same name of the former limit of transformer winding positive terminal; The anti-anode that swashs second terminating diode of auxiliary winding, the negative electrode of diode connects the input positive source, anti-first termination input power cathode that swashs auxiliary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120566810 CN202524295U (en) | 2011-12-30 | 2011-12-30 | Multi-level balancing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120566810 CN202524295U (en) | 2011-12-30 | 2011-12-30 | Multi-level balancing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202524295U true CN202524295U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120566810 Expired - Fee Related CN202524295U (en) | 2011-12-30 | 2011-12-30 | Multi-level balancing circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447395A (en) * | 2011-12-30 | 2012-05-09 | 深圳麦格米特电气股份有限公司 | Multi-level balanced circuit and achievement method thereof |
| CN109004709A (en) * | 2018-08-01 | 2018-12-14 | 乐普医学电子仪器股份有限公司 | A kind of high voltage charge circuit of variable connector switching control |
| CN112908653A (en) * | 2021-02-02 | 2021-06-04 | 浙江工业大学之江学院 | Distributed transformer and application circuit thereof |
-
2011
- 2011-12-30 CN CN 201120566810 patent/CN202524295U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447395A (en) * | 2011-12-30 | 2012-05-09 | 深圳麦格米特电气股份有限公司 | Multi-level balanced circuit and achievement method thereof |
| CN109004709A (en) * | 2018-08-01 | 2018-12-14 | 乐普医学电子仪器股份有限公司 | A kind of high voltage charge circuit of variable connector switching control |
| CN112908653A (en) * | 2021-02-02 | 2021-06-04 | 浙江工业大学之江学院 | Distributed transformer and application circuit thereof |
| CN112908653B (en) * | 2021-02-02 | 2021-11-09 | 浙江工业大学之江学院 | Distributed transformer and application circuit thereof |
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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: 20121107 Termination date: 20171230 |