CN204119036U - A kind of two-way phase shifting full bridge soft switch circuit - Google Patents
A kind of two-way phase shifting full bridge soft switch circuit Download PDFInfo
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- CN204119036U CN204119036U CN201420371481.2U CN201420371481U CN204119036U CN 204119036 U CN204119036 U CN 204119036U CN 201420371481 U CN201420371481 U CN 201420371481U CN 204119036 U CN204119036 U CN 204119036U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model provides a kind of two-way phase shifting full bridge soft switch circuit, comprise transformer T, the first two-way phase whole-bridging circuit, the second two-way phase whole-bridging circuit and resonant circuit, described transformer T connects described first two-way phase whole-bridging circuit and the second two-way phase whole-bridging circuit respectively by resonant circuit, reduce power consumption, improve coefficient of safety.
Description
Technical field
The utility model relates to a kind of two-way phase shifting full bridge soft switch circuit.
Background technology
A procedure indispensable in lithium battery production technology changes into, and is namely to carry out secondary discharge and recharge to battery, and the discharge and recharge technology changing into power-supply device directly affects performance and the use of storage battery.
On the one hand, consider based on technology and cost factor, existing Battery formation charging/discharging apparatus majority adopts unidirectional phase shift power conversion architecture, and the energy discharged in battery discharge procedure is taked to be consumed by the mode of conductive discharge, causes great energy waste; For larger cell production companies, the electric energy expense of Battery formation consumption can account for two to three one-tenth of production cost, and the electricity charge of annual formation and testing are exactly a no small cost; For this problem, existing to how reducing expending and becoming battery production enterprise problem in the urgent need to address to its recycling of discharge energy.
On the other hand, change in charging/discharging apparatus, phase-shifting full-bridge module all adopts traditional hard switching pattern, switch element is switched on or switched off circuit when bearing voltage or electric current, therefore larger switching loss can be produced in the process turned on and off, and switching frequency is higher, switching loss is also larger; In switching process, also can evoke the vibration of circuit distributed inductance and parasitic capacitance simultaneously, bring supplementary load loss and produce electromagnetic interference, thus hard switching supply frequency can not be too high, also to take the measure preventing electromagnetic interference, EMI characteristic is poor, inefficiency, and its power switch component works in hard switching pattern, switching loss is large, is difficult to carry out bring to power density by high frequency.During power switch circuit work runs, the straight-through accident of pipe up and down easily occurs, and coefficient of safety is not high.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of two-way phase shifting full bridge soft switch circuit, reduces power consumption, improve coefficient of safety.
The utility model is achieved in that a kind of two-way phase shifting full bridge soft switch circuit, comprise transformer T, the first two-way phase whole-bridging circuit and the second two-way phase whole-bridging circuit, also comprise resonant circuit, described transformer T connects described first two-way phase whole-bridging circuit and the second two-way phase whole-bridging circuit respectively by resonant circuit.
Further, described resonant circuit comprises capacitance C9, capacitance C10, a resonant inductance Lr and a resonant capacitance Cr, and described resonant inductance Lr connects with described resonant capacitance Cr;
Described first two-way phase whole-bridging circuit comprises switch transistor T 1, switch transistor T 2, switch transistor T 3 and switch transistor T 4, described switch transistor T 1 is connected with switch transistor T 2 formation first leading-bridge, described switch transistor T 3 is connected with switch transistor T 4 formation first lagging leg, and described first leading-bridge is in parallel with the first lagging leg;
Described second two-way phase whole-bridging circuit comprises switch transistor T 5, switch transistor T 6, switch transistor T 7 and switch transistor T 8, described switch transistor T 5 is connected with switch transistor T 6 formation second leading-bridge, described switch transistor T 7 is connected with switch transistor T 8 formation second lagging leg, and described second leading-bridge is in parallel with the second lagging leg;
Primary side one end of described transformer T is connected to the central point of the first leading-bridge by capacitance C9, the other end is connected to the central point of described first lagging leg; Or primary side one end of described transformer T is connected to the central point of the first lagging leg by capacitance C9, the other end is connected to the central point of described first leading-bridge; Primary side one end of described transformer T is connected to the central point of the second leading-bridge by capacitance C10, the other end is connected to the central point of described second lagging leg; Or primary side one end of described transformer T is connected to the central point of the second lagging leg by capacitance C10, the other end is connected to the central point of described second leading-bridge;
Described resonant inductance Lr and described resonant capacitance Cr series arm are parallel to the two ends of described capacitance C9 and transformer T primary side series arm, or described resonant inductance Lr and described resonant capacitance Cr series arm are parallel to the two ends of described capacitance C10 and transformer T primary side series arm.
The utility model has the advantage of: the two-way phase shifting full bridge soft switch circuit of the utility model, adopt two-way phase-shifting full-bridge power conversion architecture to control the bi-directional of energy, reduce volume and the quantity of function element, significantly promote capacity usage ratio, effectively save mass energy; Compared with existing phase shifting control, there is less power circulation and current stress, and can be very desirable realize Sofe Switch function, particularly can realize the Sofe Switch in underloading situation.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is the circuit diagram of the two-way phase shifting full bridge soft switch circuit embodiments one of the utility model.
Fig. 2 is the circuit diagram of the two-way phase shifting full bridge soft switch circuit embodiments two of the utility model.
Embodiment
Refer to shown in Fig. 1 and Fig. 2, two-way phase shifting full bridge soft switch circuit, comprise transformer T, the first two-way phase whole-bridging circuit, the second two-way phase whole-bridging circuit and resonant circuit, described transformer T connects described first two-way phase whole-bridging circuit and the second two-way phase whole-bridging circuit respectively by resonant circuit.
Resonant circuit described in the utility model comprises capacitance C9, capacitance C10, a resonant inductance Lr and a resonant capacitance Cr, and described resonant inductance Lr connects with described resonant capacitance Cr;
Described first two-way phase whole-bridging circuit comprises switch transistor T 1, switch transistor T 2, switch transistor T 3 and switch transistor T 4, described switch transistor T 1 is connected with switch transistor T 2 formation first leading-bridge, described switch transistor T 3 is connected with switch transistor T 4 formation first lagging leg, and described first leading-bridge is in parallel with the first lagging leg;
Described second two-way phase whole-bridging circuit comprises switch transistor T 5, switch transistor T 6, switch transistor T 7 and switch transistor T 8, described switch transistor T 5 is connected with switch transistor T 6 formation second leading-bridge, described switch transistor T 7 is connected with switch transistor T 8 formation second lagging leg, and described second leading-bridge is in parallel with the second lagging leg;
Primary side one end of described transformer T is connected to the central point of the first leading-bridge by capacitance C9, the other end is connected to the central point of described first lagging leg; Or primary side one end of described transformer T is connected to the central point of the first lagging leg by capacitance C9, the other end is connected to the central point of described first leading-bridge; Primary side one end of described transformer T is connected to the central point of the second leading-bridge by capacitance C10, the other end is connected to the central point of described second lagging leg; Or primary side one end of described transformer T is connected to the central point of the second lagging leg by capacitance C10, the other end is connected to the central point of described second leading-bridge;
Described resonant inductance Lr and described resonant capacitance Cr series arm are parallel to the two ends of described capacitance C9 and transformer T primary side series arm, or described resonant inductance Lr and described resonant capacitance Cr series arm are parallel to the two ends of described capacitance C10 and transformer T primary side series arm.
A kind of embodiment of the present utility model mainly comprises: two-way phase-shifting full-bridge power transforming main circuit, CCLC resonant circuit, filter circuit, by the battery that changes into and respectively with 2 full-bridge phase shifting circuit electric capacity C1 ~ C8 that totally 8 power switch pipes are in parallel.
Above-mentioned two-way phase-shifting full-bridge power conversion circuit mainly comprises: high frequency transformer T, four, left side switch transistor T 1 ~ T4 and four, right side switch transistor T 5 ~ T8; The leading-bridge of switch transistor T 1 and T2 left side in series full-bridge circuit, and switch transistor T 3 and T4 are composed in series the lagging leg of left side full-bridge circuit; The leading-bridge of switch transistor T 5 and T6 right side in series full-bridge circuit, and switch transistor T 7 and T8 are composed in series the lagging leg of right side full-bridge circuit.This switch forearm and switch postbrachium composition phase-shifting full-bridge power switch model, the on off state of both sides full-bridge is identical, i.e. synchro switch, diagonal angle switch is conducting successively in turn, angle of flow is 180 °, then the inversion of the inverter output voltage of VD side full-bridge and VE side full-bridge exports the voltage being folded to VD rear flank to be duty ratio be 50% square-wave voltage.Watt level and the flow direction is controlled by the phase angle controlled between square wave.
Electric capacity C1 ~ C8 is the resonant capacitance of T1 ~ T8 respectively, comprises parasitic capacitance and external capacitor, and C1 ~ C8 is in parallel with T1 ~ T8 respectively, Cd and Ce is bus storage capacitor, and power switch pipe T1 ~ T8 here selects the built-in backward diode of full-control type; Also the full-control type power tube not having built-in backward diode can be selected, afterwards that backward diode is external.
CCLC resonant circuit is by resonant inductance Lr, resonant capacitance Cr, and the resonance effect between capacitance C9 and C10, achieves no-voltage and the zero current connection circuit of two-way phase-shifting full-bridge power conversion circuit, therefore referred to as CCLC resonant circuit.CCLC resonant circuit mainly comprises: resonant inductance Lr, resonant capacitance Cr, capacitance C9 and C10 (capacitance plays isolated DC), as shown in Figure 1, for a kind of connected mode of this CCLC resonant circuit, one end of this resonant circuit is connected with the central point of the first leading-bridge (namely between switch transistor T 1 and T2), and the other end of resonant circuit is connected with the central point of the first lagging leg (namely between switch transistor T 3 and T4).Resonant inductance Lr and resonant capacitance Cr series arm are parallel to the two ends of capacitance C9 and transformer primary side series arm.
As shown in Figure 2, for the another kind of connected mode of CCLC, one end of this resonant circuit is connected with the central point of the second leading-bridge (namely between switch transistor T 5 and T6), and the other end of resonant circuit is connected with the central point of the second lagging leg (namely between switch transistor T 7 and T8).Resonant inductance Lr and resonant capacitance Cr series arm are parallel to the two ends of capacitance C10 and transformer primary side series arm.
Changing into charge and discharge process is: VD input voltage produces square wave to encourage CCLC resonance export resonance electric current after switching tube inversion, flow through transformer T and simultaneous phase-shifting full bridge inverter, then charge to changing into battery VE through filter capacitor Ce output dc voltage; In discharge process, change into battery VE electric current and be back to power vd by transformer secondary phase-shifting full-bridge inverter circuit, transformer T and CCLC resonant circuit and transformer primary phase-shifting full-bridge inverter circuit and filter capacitor Cd.Like this, the lithium battery formation device that has the two-way phase-shifting full-bridge conversion discharge and recharge of energy feedback function is formed.
The utility model has the advantage of: the two-way phase shifting full bridge soft switch circuit of the utility model, adopt two-way phase-shifting full-bridge power conversion architecture to control the bi-directional of energy, reduce volume and the quantity of function element, significantly promote capacity usage ratio, effectively save mass energy; Compared with existing phase shifting control, there is less power circulation and current stress, and can be very desirable realize Sofe Switch function, particularly can realize the Sofe Switch in underloading situation.
Although the foregoing describe embodiment of the present utility model; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present utility model; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present utility model and change, should be encompassed in scope that claim of the present utility model protects.
Claims (2)
1. a two-way phase shifting full bridge soft switch circuit, comprise transformer T, the first two-way phase whole-bridging circuit and the second two-way phase whole-bridging circuit, it is characterized in that: also comprise resonant circuit, described transformer T connects described first two-way phase whole-bridging circuit and the second two-way phase whole-bridging circuit respectively by resonant circuit.
2. a kind of two-way phase shifting full bridge soft switch circuit as claimed in claim 1, it is characterized in that: described resonant circuit comprises capacitance C9, capacitance C10, a resonant inductance Lr and a resonant capacitance Cr, and described resonant inductance Lr connects with described resonant capacitance Cr;
Described first two-way phase whole-bridging circuit comprises switch transistor T 1, switch transistor T 2, switch transistor T 3 and switch transistor T 4, described switch transistor T 1 is connected with switch transistor T 2 formation first leading-bridge, described switch transistor T 3 is connected with switch transistor T 4 formation first lagging leg, and described first leading-bridge is in parallel with the first lagging leg;
Described second two-way phase whole-bridging circuit comprises switch transistor T 5, switch transistor T 6, switch transistor T 7 and switch transistor T 8, described switch transistor T 5 is connected with switch transistor T 6 formation second leading-bridge, described switch transistor T 7 is connected with switch transistor T 8 formation second lagging leg, and described second leading-bridge is in parallel with the second lagging leg;
Primary side one end of described transformer T is connected to the central point of the first leading-bridge by capacitance C9, the other end is connected to the central point of described first lagging leg; Or primary side one end of described transformer T is connected to the central point of the first lagging leg by capacitance C9, the other end is connected to the central point of described first leading-bridge; Primary side one end of described transformer T is connected to the central point of the second leading-bridge by capacitance C10, the other end is connected to the central point of described second lagging leg; Or primary side one end of described transformer T is connected to the central point of the second lagging leg by capacitance C10, the other end is connected to the central point of described second leading-bridge;
Described resonant inductance Lr and described resonant capacitance Cr series arm are parallel to the two ends of described capacitance C9 and transformer T primary side series arm, or described resonant inductance Lr and described resonant capacitance Cr series arm are parallel to the two ends of described capacitance C10 and transformer T primary side series arm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420371481.2U CN204119036U (en) | 2014-07-07 | 2014-07-07 | A kind of two-way phase shifting full bridge soft switch circuit |
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| CN201420371481.2U CN204119036U (en) | 2014-07-07 | 2014-07-07 | A kind of two-way phase shifting full bridge soft switch circuit |
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| CN204119036U true CN204119036U (en) | 2015-01-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092380A (en) * | 2014-07-07 | 2014-10-08 | 福州开发区星云电子自动化有限公司 | Bi-directional phase-shifted full-bridge soft switch circuit |
| CN106452151A (en) * | 2016-12-02 | 2017-02-22 | 中车青岛四方车辆研究所有限公司 | Single-phase inverter for motor train unit |
| CN106611975A (en) * | 2015-10-23 | 2017-05-03 | 通用电气公司 | Energy conversion system |
| CN107911028A (en) * | 2017-12-22 | 2018-04-13 | 四川大学 | A kind of DC DC converters of reload buffer device and the method for reducing reflux power |
-
2014
- 2014-07-07 CN CN201420371481.2U patent/CN204119036U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092380A (en) * | 2014-07-07 | 2014-10-08 | 福州开发区星云电子自动化有限公司 | Bi-directional phase-shifted full-bridge soft switch circuit |
| CN106611975A (en) * | 2015-10-23 | 2017-05-03 | 通用电气公司 | Energy conversion system |
| CN106452151A (en) * | 2016-12-02 | 2017-02-22 | 中车青岛四方车辆研究所有限公司 | Single-phase inverter for motor train unit |
| CN107911028A (en) * | 2017-12-22 | 2018-04-13 | 四川大学 | A kind of DC DC converters of reload buffer device and the method for reducing reflux power |
| CN107911028B (en) * | 2017-12-22 | 2024-02-02 | 四川大学 | DC-DC converter with buffer and method for reducing reflux power |
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Address after: Mawei District 350000 Fujian city of Fuzhou province Kuaian Majiang Shishi Avenue Road No. 6 1-4 floor Patentee after: FUJIAN NEBULA ELECTRONICS CO., LTD. Address before: 350000 Productivity Promotion Center, 8 star road, Mawei District, Fujian, Fuzhou 3, China, 304 Patentee before: FUJIAN NEBULA ELECTRONICS CO., LTD. |