CN215120577U - Bidirectional bridge type resonant converter and power supply - Google Patents

Bidirectional bridge type resonant converter and power supply Download PDF

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Publication number
CN215120577U
CN215120577U CN202120721417.2U CN202120721417U CN215120577U CN 215120577 U CN215120577 U CN 215120577U CN 202120721417 U CN202120721417 U CN 202120721417U CN 215120577 U CN215120577 U CN 215120577U
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pin
tube
driving
unit
controller
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吴洋
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Shenzhen Topband Co Ltd
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Shenzhen Topband Co Ltd
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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

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Abstract

The utility model relates to a two-way bridge type resonant converter and power, include: the transformer comprises a first end, a second end, a transformation circuit comprising a first coil and a second coil, a first bridge circuit connected with the first end, a second bridge circuit connected with the second end, a first resonance unit and a first bypass unit which are connected with the first bridge circuit and the first coil, a second resonance unit and a second bypass unit which are connected with the second bridge circuit and the second coil, a first controller connected with the first bypass unit, and a second controller connected with the second bypass unit; the first driving unit is connected with the first controller and the first bridge circuit, and the second driving unit is connected with the first controller and the second bridge circuit; wherein the first resonance unit is connected with the first controller and is configured to adjust the resonance parameters by the first controller; the second resonance unit is connected with the second controller and is configured to adjust the resonance parameter by the second controller. Implement the utility model discloses can match multiple application scene, satisfy compatible optimal design.

Description

Bidirectional bridge type resonant converter and power supply
Technical Field
The utility model relates to the field of electronic technology, more specifically say, relate to a two-way bridge type resonant converter and power.
Background
In battery-powered circuits, charging and discharging techniques have been widely used. The traditional power supply can only satisfy the unidirectional flow of energy, and the charging and discharging are realized separately. The bidirectional converter is just based on the integration of charge and discharge technology to reduce the volume of the product and reduce the overall cost. The bidirectional converter can greatly improve the power density. However, in the use process of the current resonant converter, the resonant cavity parameters are generally not adjustable, and in the actual design process, considering that the battery charge and discharge is wide-range voltage, the fixed resonant parameters generally cannot meet the design optimization under a wide range, and the forward and reverse resonant point design is difficult to be compatible.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned partial technical defect of prior art, provide a two-way bridge type resonant converter and power.
The utility model provides a technical scheme that its technical problem adopted is: constructing a bidirectional bridge resonant converter comprising: the transformer comprises a first end, a second end, a transformation circuit comprising a first coil and a second coil, a first bridge circuit connected with the first end, a second bridge circuit connected with the second end, a first resonance unit and a first bypass unit connected with the first bridge circuit and the first coil, a second resonance unit and a second bypass unit connected with the second bridge circuit and the second coil, a first controller connected with the first bypass unit, and a second controller connected with the second bypass unit; the first driving unit is connected with the first controller and the first bridge circuit, and the second driving unit is connected with the first controller and the second bridge circuit;
wherein the first resonance unit is connected with the first controller and is configured to adjust resonance parameters by the first controller; the second resonance unit is connected with the second controller and is configured to adjust resonance parameters by the second controller.
Preferably, the first and second electrodes are formed of a metal,
the first resonance unit comprises a first resonance parameter adjusting unit and a second resonance parameter adjusting unit; the second resonance unit comprises a third resonance parameter adjusting unit and a fourth resonance parameter adjusting unit;
a first end of the first resonance parameter adjusting unit is connected with the first coil, and a second end of the first resonance parameter adjusting unit is connected with the first bridge circuit;
the second resonance parameter adjusting unit is connected with the first resonance parameter adjusting unit and the first driving unit and is configured to be driven to be turned on or off by the first controller;
a first end of the third resonance parameter adjusting unit is connected with the second coil, and a second end of the third resonance parameter adjusting unit is connected with the second bridge circuit;
the fourth resonance parameter adjustment unit is connected to the third resonance parameter adjustment unit and the second driving unit, and is configured to be driven to turn on or off by the second controller.
Preferably, the first and second electrodes are formed of a metal,
the first resonance parameter adjusting unit comprises a first capacitor and a first inductor;
after the first capacitor and the first inductor are connected in series, one end of the first capacitor is connected with the first bridge circuit, and the other end of the first capacitor is connected with the first coil.
Preferably, the second resonance parameter adjusting unit comprises a second capacitor, a first relay switch and a first driving tube;
the second capacitor is connected with one end of the first capacitor after the contact of the first relay switch is connected in series, the other end of the first capacitor is connected with the second end of the first capacitor, the first pin of the first driving tube is connected with the coil of the first relay switch, the second pin of the first driving tube is grounded, and the third pin of the first driving tube is connected with the first controller.
Preferably, the first and second electrodes are formed of a metal,
the second resonance parameter adjusting unit comprises a second inductor, a second relay switch and a second driving tube; after the second inductor is connected with the first capacitor and the first inductor in series, one end of the second inductor is connected with the first bridge circuit, and the other end of the second inductor is connected with the first coil; the first connection end of the contact of the second relay switch is connected with the first end of the second inductor, the first connection end of the contact of the second relay switch is connected with the second end of the second inductor, the first pin of the second driving tube is connected with the coil of the second relay switch, the second pin of the second driving tube is grounded, and the third pin of the second driving tube is connected with the first controller.
Preferably, the third resonance parameter adjusting unit includes a third capacitor and a third inductor;
and after the third capacitor and the third inductor are connected in series, one end of the third capacitor is connected with the second bridge circuit, and the other end of the third capacitor is connected with the second coil.
Preferably, the fourth resonance parameter adjusting unit comprises a fourth capacitor, a third relay switch and a third driving tube;
the fourth capacitor is connected with one end of the third relay switch after the contact of the third relay switch is connected in series, the first end of the third capacitor is connected with the other end of the third capacitor, the first pin of the third driving tube is connected with the coil of the third relay switch, the second pin of the third driving tube is grounded, and the third pin of the third driving tube is connected with the second controller.
Preferably, the fourth resonance parameter adjustment unit includes a fourth inductor, a fourth relay switch, and a fourth driving tube; after the fourth inductor is connected with the third capacitor and the third inductor in series, one end of the fourth inductor is connected with the second bridge circuit, and the other end of the fourth inductor is connected with the second coil; the first connection end of the contact of the fourth relay switch is connected with the first end of the fourth inductor, the first connection end of the contact of the fourth relay switch is connected with the second end of the fourth inductor, the first pin of the fourth driving tube is connected with the coil of the fourth relay switch, the second pin of the fourth driving tube is grounded, and the third pin of the fourth driving tube is connected with the second controller.
Preferably, the first and second electrodes are formed of a metal,
the first bridge circuit comprises a first switching tube, a second switching tube, a third switching tube and a fourth switching tube; the first end is connected respectively to the first pin of first switch tube with the first pin of second switch tube, the second pin of first switch tube with the first pin of third switch tube is connected respectively first resonance unit, the second pin of second switch tube with the first pin of fourth switch tube is connected respectively vary voltage circuit's first coil, the second pin of third switch tube with the second pin of fourth switch tube all grounds, the third pin of first switch tube, the third pin of third switch tube, the third pin of second switch tube with the third pin of fourth switch tube is connected respectively first drive unit.
Preferably, the first driving unit includes a first driving chip U103 and a second driving chip U105;
the first pin of the first driving chip U103 and the second pin of the second driving chip U105 are connected with each other and then connected with the second controller, the second pin of the first driving chip U103 and the first pin of the second driving chip U105 are connected with each other and then connected with the second controller, the third pin of the first switch tube is connected with the sixteenth pin of the first driving chip U103, the third pin of the third switch tube is connected with the eleventh pin of the first driving chip U103, the third pin of the second switch tube is connected with the sixteenth pin of the second driving chip U105, and the third pin of the fourth switch tube is connected with the eleventh pin of the second driving chip U105.
Preferably, the first and second electrodes are formed of a metal,
the second bridge circuit comprises a fifth switching tube, a sixth switching tube, a seventh switching tube, an eighth switching tube and a second driving unit; the first pin of the fifth switching tube and the first pin of the sixth switching tube are respectively connected with the second end, the second pin of the fifth switching tube and the first pin of the seventh switching tube are respectively connected with the second coil of the voltage transformation circuit, the second pin of the sixth switching tube and the first pin of the eighth switching tube are respectively connected with the second resonance unit, and the second pin of the fifth switching tube and the second pin of the eighth switching tube are both grounded; the third pin of the fifth switching tube, the third pin of the eighth switching tube, the third pin of the sixth switching tube and the third pin of the seventh switching tube are respectively connected with the second driving unit.
Preferably, the second driving unit includes a third driving chip U104 and a fourth driving chip U106;
the first pin and the second pin of the third driving chip U104 are connected with each other and then connected with the second controller, the first pin and the second pin of the fourth driving chip U106 are connected with each other and then connected with the second controller, the third pin of the fifth switching tube is connected with the twelfth pin of the third driving chip U104 and the third pin of the eighth switching tube is connected with the sixth pin of the third driving chip U104, the third pin of the sixth switching tube is connected with the twelfth pin of the fourth driving chip U106, and the third pin of the seventh switching tube is connected with the sixth pin of the fourth driving chip U106.
Preferably, the first bypass unit comprises a fifth relay switch and a fifth driving tube;
the first end of the contact of the fifth relay switch is connected with the first bridge circuit, the second end of the contact of the fifth relay switch is connected with the first coil, the first pin of the fifth driving tube is connected with the coil of the fifth relay switch, the second pin of the fifth driving tube is grounded, and the third pin of the fifth driving tube is connected with the first controller.
Preferably, the second bypass unit includes a sixth relay switch and a sixth driving tube;
the first end of the contact of the sixth relay switch is connected with the second bridge circuit, the second end of the contact of the sixth relay switch is connected with the second coil, the first pin of the sixth driving tube is connected with the coil of the sixth relay switch, the second pin of the sixth driving tube is grounded, and the third pin of the sixth driving tube is connected with the second controller.
The present invention also provides a power supply comprising a bidirectional bridge resonant converter as defined in any of the above.
Implement the utility model discloses a two-way bridge type resonant converter and power has following beneficial effect: by introducing forward and reverse resonant cavity parameters for flexible adjustment, various application scenes can be matched, compatibility optimization design is met, and working efficiency and reliability can be further improved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a logic block diagram of an embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 3 is a schematic circuit diagram of another embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 4 is a schematic circuit diagram of another embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 5 is a schematic circuit diagram of an embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 6 is a schematic circuit diagram of an embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 7 is a schematic circuit diagram of an embodiment of a bidirectional bridge resonant converter according to the present invention;
fig. 8 is a schematic circuit diagram of an embodiment of the bidirectional bridge resonant converter of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of the present invention, a bidirectional bridge resonant converter includes: a first terminal 111, a second terminal 112, a transformer circuit 140 including a first coil 141 and a second coil 142, a first bridge circuit 121 connected to the first terminal 111, a second bridge circuit 122 connected to the second terminal 112, a first resonance unit 131 and a first bypass unit 151 connected to the first bridge circuit 121 and the first coil 141, a second resonance unit 132 and a second bypass unit 152 connected to the second bridge circuit 122 and the second coil 142, a first controller 181 connected to the first bypass unit 151, and a second controller 182 connected to the second bypass unit 152; a first driving unit 191 connecting the first controller 181 and the first bridge circuit 121, and a second driving unit 192 connecting the first controller 181 and the second bridge circuit 122; wherein the first resonance unit 131 is connected to the first controller 181 and configured to adjust resonance parameters by the first controller 181; the second resonance unit 132 is connected to the second controller 182 and is configured to adjust resonance parameters by the second controller 182. Specifically, the first terminal 111 and the second terminal 112 of the converter can be used as a power input or a power output, respectively, i.e. an input terminal or a load terminal of a corresponding power source. Specifically, during operation, a power source may be input through the first end 111, a power source output is provided through the second end 112, the second end 112 serves as a load end, the first bridge circuit 121 connected to the first end serves as a primary main switch circuit, and the second bridge circuit 122 connected to the second end serves as an output rectifying circuit to implement synchronous rectification. At the same time, the first bypass unit 151 is controlled to be turned off by the first controller 181, so that the first resonance unit 131 provides a resonance circuit for the power input for the on-duty state, and the resonance parameter of the first resonance unit 131 can be controlled to be adjusted by the first controller 181. The second bypass unit 152 is controlled by the second controller 182 to be turned on to make the second resonance unit 132 in a short-circuit state, i.e. the second resonance unit 152 does not participate in the resonance of the signal transmission process. It can also input power through the second terminal 112, and provide power output through the first terminal 111, where the first terminal 111 is used as a load terminal, the second bridge circuit 122 connected to the second terminal 112 is used as a primary switch circuit, and the first bridge circuit 121 connected to the first terminal 111 is used as an output rectifying circuit to implement synchronous rectification. Meanwhile, the second bypass unit 152 is controlled to be turned off by the second controller 182, so that the second resonance unit 132 provides resonance for the power input in the on-state, and the resonance parameter of the second resonance unit 132 is controlled to be adjusted by the second controller 182 to adapt to the current operation. In one embodiment, the first controller 181 may be an MCU chip, and the second controller 182 may be a DSP chip.
In an embodiment, the first resonance unit 131 comprises a first resonance parameter adjusting unit 1311 and a second resonance parameter adjusting unit 1312; the second resonance unit 132 includes a third resonance parameter adjustment unit 1321 and a fourth resonance parameter adjustment unit 1322; a first end of the first resonance parameter adjusting unit 1311 is connected to the first coil 141, and a second end of the first resonance parameter adjusting unit 1311 is connected to the first bridge circuit 121; the second resonance parameter adjusting unit 1312 connects the first resonance parameter adjusting unit 1311 and the first driving unit 191, and is configured to be driven to turn on or off by the first controller 181; a first end of the third resonance parameter adjusting unit 1321 is connected to the second coil 142, and a second end of the third resonance parameter adjusting unit 1321 is connected to the second bridge circuit 122; the fourth resonance parameter adjustment unit 1322 is connected to the third resonance parameter adjustment unit 1321 and the second driving unit 192, and is configured to be driven to turn on or off by the second controller 182. Specifically, in the first resonance unit 131, the first controller 181 controls the second resonance parameter adjustment unit 1312 to be turned on or off, so that the second resonance parameter adjustment unit 1312 and the first resonance parameter adjustment unit 1311 cooperate with each other to realize the adjustment of the resonance parameter of the first resonance unit 131. It can be understood that the resonance parameter of the first resonance unit 131 may be determined by the first resonance parameter adjustment unit 1311 when the second resonance parameter adjustment unit 1312 is turned off, and when the second resonance parameter adjustment unit 1312 is turned on. The resonance parameter of the first resonance unit 131 may be adjusted by the first resonance parameter adjusting unit 1311 and the second resonance parameter adjusting unit 1312 in common. Similarly, in the second resonance unit 132, the second controller 182 controls the fourth resonance parameter adjusting unit 1322 to be turned on or off, so that the fourth resonance parameter adjusting unit 1322 and the third resonance parameter adjusting unit 1321 cooperate with each other to adjust the resonance parameters of the second resonance unit 132.
As shown in fig. 2, in an embodiment, the first resonance parameter adjusting unit 1311 includes a first capacitor C1 and a first inductor L1; after the first capacitor C1 and the first inductor L1 are connected in series, one end of the first capacitor C1 is connected to the first bridge circuit 121, and the other end of the first capacitor C1 is connected to the first coil 141. Namely, the first inductor L1 and the first capacitor C1 are connected in series to form a resonant circuit to participate in resonance.
Optionally, in an embodiment, the second resonance parameter adjusting unit 1312 includes a second capacitor C1A, a first RELAY switch relax 4, and a first driving tube Q105; after the second capacitor C1A is connected in series with the contact of the first RELAY switch RELAY4, one end of the second capacitor C1A is connected to the first end of the first capacitor C1, the other end of the second capacitor C3578 is connected to the second end of the first capacitor C1, the first pin of the first driving tube Q105 is connected to the coil of the first RELAY switch RELAY4, the second pin of the first driving tube Q105 is grounded, and the third pin of the first driving tube Q105 is connected to the first controller 181. Specifically, the first controller 181 drives the first driving tube to be turned on or off, so that the coil of the first RELAY switch RELAY4 is powered on or off. When the coil of the first RELAY switch RELAY4 is powered off, the second capacitor C1A is opened, and only the first resonance parameter adjusting unit 1311 resonates at this time. When the coil of the first RELAY switch RELAY4 is powered on, the second capacitor C1A is connected in parallel with the first capacitor C1 to obtain a new capacitance parameter, that is, the first resonance parameter adjusting unit 1311 and the second resonance parameter adjusting unit 1312 participate in resonance together.
As shown in fig. 3, 4 and 6, in an embodiment, on the basis of the above, the second resonance parameter adjusting unit 1312 includes a second inductor L1A, a second RELAY switch relax 3 and a second driving tube Q103; after the second inductor L1A is connected in series with the first capacitor C1 and the first inductor L1, one end of the second inductor is connected to the first bridge circuit 121, and the other end of the second inductor is connected to the first coil 141; a first connection end of a contact of the second RELAY switch relax 3 is connected to a first end of the second inductor L1A, a first connection end of a contact of the second RELAY switch relax 3 is connected to a second end of the second inductor L1A, a first pin of the second driving tube Q103 is connected to a coil of the second RELAY switch relax 3, a second pin of the second driving tube Q103 is grounded, and a third pin of the second driving tube Q103 is connected to the first controller 181. Specifically, in the second resonance parameter adjusting unit 1312, the second inductor L1A is connected in series with the first capacitor C1 and the first inductor L1, the first controller 181 outputs a control level to control the second driving transistor Q103 to be turned on or off, when the second driving transistor Q103 is turned on, the coil of the second RELAY switch RELAY3 is powered on, the second inductor L1A is short-circuited, and at this time, only the first resonance parameter adjusting unit 1311 participates in resonance. When the second driving tube Q103 is turned off, the coil of the second RELAY switch RELAY3 is de-energized, and at this time, the second inductor L1A and the first resonance parameter adjusting unit 1311 participate in resonance together.
As shown in fig. 2, in an embodiment, the third resonant parameter adjusting unit 1321 includes a third capacitor C2 and a third inductor L2; after the third capacitor C2 and the third inductor L2 are connected in series, one end of the third capacitor C2 is connected to the second bridge circuit 122, and the other end of the third capacitor C2 is connected to the second coil 142. Namely, the third inductor L2 and the third capacitor C2 are connected in series to form a resonant circuit to participate in resonance.
Optionally, in an embodiment, the fourth resonance parameter adjusting unit 1322 includes a fourth capacitor C2A, a third RELAY switch relax 5, and a third driving tube Q102; after the fourth capacitor C2A is connected in series with the contact of the third RELAY switch relax 5, one end of the fourth capacitor C2A is connected to the first end of the third capacitor C2, the other end of the fourth capacitor C3578 is connected to the second end of the third capacitor C2, the first pin of the third driving tube Q102 is connected to the coil of the third RELAY switch relax 5, the second pin of the third driving tube Q102 is grounded, and the third pin of the third driving tube Q102 is connected to the second controller 182. Specifically, the second controller 182 drives the third driving tube Q102 to be turned on or off, so that the coil of the third RELAY switch RELAY5 is powered on or off. When the coil of the third RELAY switch RELAY5 is powered off, the third capacitor C2 is opened, and only the third resonance parameter adjusting unit 1321 resonates. When the coil of the third RELAY switch RELAY5 is powered on, the fourth capacitor C2A is connected in parallel with the third capacitor C2 to obtain a new capacitance parameter, that is, the third resonance parameter adjusting unit 1321 and the fourth resonance parameter adjusting unit 1322 participate in resonance together.
As shown in fig. 3, 4 and 7, in an embodiment, on the basis of the above, the fourth resonance parameter adjusting unit 1322 includes a fourth inductor L2A, a fourth RELAY switch RELAY6 and a fourth driving pipe Q104; the fourth inductor L2A is connected in series with the third capacitor C2 and the third inductor L2, and then one end of the fourth inductor is connected to the second bridge circuit 122, and the other end of the fourth inductor is connected to the second coil 142; a first connection end of a contact of the fourth RELAY switch relax 6 is connected to a first end of the fourth inductor L2A, a first connection end of a contact of the fourth RELAY switch relax 6 is connected to a second end of the fourth inductor L2A, a first pin of the fourth driving tube Q104 is connected to a coil of the fourth RELAY switch relax 6, a second pin of the fourth driving tube Q104 is grounded, and a third pin of the fourth driving tube Q104 is connected to the second controller 182. Specifically, in the fourth resonance parameter adjusting unit 1322, the fourth inductor L2A is connected in series with the third capacitor C2 and the third inductor L2, the second controller 182 outputs a control level to control the fourth driving tube Q104 to be turned on or off, when the fourth driving tube Q104 is turned on, the coil of the fourth RELAY switch RELAY6 is powered on, the fourth inductor L2A is short-circuited, and only the third resonance parameter adjusting unit 1321 participates in resonance at this time. When the fourth driving tube Q104 is turned off, the coil of the fourth RELAY switch RELAY6 is de-energized, and the fourth inductor L2A and the third resonance parameter adjusting unit 1321 participate in resonance at this time.
Alternatively, the combination of second resonance parameter adjustment unit 1312 and fourth resonance parameter adjustment unit 1322, among others, is not limited to the illustrated embodiment, and may be combined.
Optionally, as shown in fig. 2, 3, 4 and 8, the first bridge circuit 121 includes a first switching tube Q1, a second switching tube Q2, a third switching tube Q3 and a fourth switching tube Q4; a first pin of the first switching tube Q1 and a first pin of the second switching tube Q2 are respectively connected to the first end, a second pin of the first switching tube Q1 and a first pin of the third switching tube Q3 are respectively connected to the first resonance unit 131, a second pin of the second switching tube Q2 and a first pin of the fourth switching tube Q4 are respectively connected to the first coil 141 of the voltage transformation circuit, a second pin of the third switching tube Q3 and a second pin of the fourth switching tube Q4 are both grounded, and a third pin of the first switching tube Q1, a third pin of the third switching tube Q3, a third pin of the second switching tube Q2 and a third pin of the fourth switching tube Q4 are respectively connected to the first driving unit 191. Specifically, the first bridge circuit 121120 may be composed of a first switch transistor Q1, a second switch transistor Q2, a third switch transistor Q3 and a fourth switch transistor Q4, and the specific connections thereof are as described above, and are driven by the first driving unit 191. When the first bridge circuit 121120 is used as an output rectifying circuit, it constitutes a rectifying bridge circuit, and when the first bridge circuit 121120 is used as a switching circuit, it normally realizes the switching circuit by the cooperation of the first switching tube Q1, the second switching tube Q2, the third switching tube Q3 and the fourth switching tube Q4. MOS (metal oxide semiconductor) tubes can be adopted as the first switching tube Q1, the second switching tube Q2, the third switching tube Q3 and the fourth switching tube Q4.
Optionally, the first driving unit 191 includes a first driving chip U103 and a second driving chip U105; the first pin of the first driving chip U103 and the second pin of the second driving chip U105 are connected to each other and then connected to the second controller 182, the second pin of the first driving chip U103 and the first pin of the second driving chip U105 are connected to each other and then connected to the second controller 182, the third pin of the first switching tube Q1 is connected to the sixteenth pin of the first driving chip U103, the third pin of the third switching tube Q3 is connected to the eleventh pin of the first driving chip U103, the third pin of the second switching tube Q2 is connected to the sixteenth pin of the second driving chip U105, and the third pin of the fourth switching tube Q4 is connected to the eleventh pin of the second driving chip U105. That is, the first driving unit 191 is composed of the first driving chip U103 and the second driving chip U105, and the driving chips are controlled to operate by the second controller 182. The first driving chip U103 and the second driving chip U105 form an isolated drive.
Optionally, the second bridge circuit 122 includes a fifth switch Q5, a sixth switch Q6, a seventh switch Q7, an eighth switch Q8, and a second driving unit 192; a first pin of the fifth switch tube Q5 and a first pin of the sixth switch tube Q6 are respectively connected to the second end, a second pin of the fifth switch tube Q5 and a first pin of the seventh switch tube Q7 are respectively connected to the second coil 142 of the voltage transformation circuit, a second pin of the sixth switch tube Q6 and a first pin of the eighth switch tube Q8 are respectively connected to the second resonance unit 132, and a second pin of the fifth switch tube Q5 and a second pin of the eighth switch tube Q8 are both grounded; the third pin of the fifth switch tube Q5, the third pin of the eighth switch tube Q8, the third pin of the sixth switch tube Q6 and the third pin of the seventh switch tube Q7 are respectively connected to the second driving unit 192. The second bridge circuit 122 may be composed of a fifth switch Q5, a sixth switch Q6, a seventh switch Q7 and an eighth switch Q8, and the specific connections thereof are as described above, and are driven by the second driving unit 192. When the second bridge circuit 122 is used as an output rectifying circuit, it constitutes a rectifying bridge circuit, and when the second bridge circuit 122 is used as a switching circuit, it normally realizes the switching circuit by the cooperation of the fifth switching tube Q5, the sixth switching tube Q6, the seventh switching tube Q7 and the eighth switching tube Q8. The MOS transistor can be selected according to requirements by the fifth switching tube Q5, the sixth switching tube Q6, the seventh switching tube Q7 and the eighth switching tube Q8.
Optionally, the second driving unit 192 includes a third driving chip U104 and a fourth driving chip U106; the first pin and the second pin of the third driving chip U104 are connected to each other and then connected to the second controller 182, the first pin and the second pin of the fourth driving chip U106 are connected to each other and then connected to the second controller 182, the third pin of the fifth switching tube Q5 is connected to the twelfth pin of the third driving chip U104, the third pin of the eighth switching tube Q8 is connected to the sixth pin of the third driving chip U104, the third pin of the sixth switching tube Q6 is connected to the twelfth pin of the fourth driving chip U106, and the third pin of the seventh switching tube Q7 is connected to the sixth pin of the fourth driving chip U106. That is, the second driving unit 192 is composed of the third driving chip U104 and the fourth driving chip U106, and the second controller 182 controls the driving chips to operate. The third driving chip U104 and the fourth driving chip U106 constitute a non-isolated drive.
Optionally, the first bypass unit 151 includes a fifth RELAY switch relax 1 and a fifth driving tube Q100; a first end of a contact of the fifth RELAY switch relax 1 is connected to the first bridge circuit 121, a second end of a contact of the fifth RELAY switch relax 1 is connected to the first coil 141, a first pin of the fifth driving tube Q100 is connected to a coil of the fifth RELAY switch relax 1, a second pin of the fifth driving tube Q100 is grounded, and a third pin of the fifth driving tube Q100 is connected to the first controller 181. The first controller 181 drives the fifth driving transistor Q100 to be turned on or off, so that the coil of the fifth RELAY switch RELAY1 is powered on or off, and when the coil of the fifth RELAY switch RELAY1 is powered off, the first resonance unit 131 normally resonates. When the coil of the fifth RELAY switch RELAY1 is powered on, the first resonance unit 131 is short-circuited.
Optionally, the second bypass unit 152 includes a sixth RELAY switch relax 2 and a sixth driving pipe Q101; a first end of a contact of the sixth RELAY switch relax 1 is connected to the second bridge circuit 122, a second end of a contact of the sixth RELAY switch relax 1 is connected to the second coil 142, a first pin of the sixth driving transistor Q101 is connected to the coil of the sixth RELAY switch relax 1, a second pin of the sixth driving transistor Q101 is grounded, and a third pin of the sixth driving transistor Q101 is connected to the second controller 182. The second controller 182 drives the sixth driving transistor Q101 to be turned on or off, so that the coil of the sixth RELAY switch RELAY1 is turned on or off to be powered on, and when the coil of the sixth RELAY switch RELAY1 is powered off, the second resonance unit 132 resonates normally. When the coil of the sixth RELAY switch RELAY1 is powered on, the second resonance unit 132 is short-circuited.
The utility model discloses a power supply, include as above arbitrary one two-way bridge type resonant converter. The power supply is used for supplying power to adapt to various application scenes.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (15)

1. A bidirectional bridge resonant converter, comprising: the transformer comprises a first end, a second end, a transformation circuit comprising a first coil and a second coil, a first bridge circuit connected with the first end, a second bridge circuit connected with the second end, a first resonance unit and a first bypass unit connected with the first bridge circuit and the first coil, a second resonance unit and a second bypass unit connected with the second bridge circuit and the second coil, a first controller connected with the first bypass unit, and a second controller connected with the second bypass unit; the first driving unit is connected with the first controller and the first bridge circuit, and the second driving unit is connected with the first controller and the second bridge circuit;
wherein the first resonance unit is connected with the first controller and is configured to adjust resonance parameters by the first controller; the second resonance unit is connected with the second controller and is configured to adjust resonance parameters by the second controller.
2. The bidirectional bridge resonant converter of claim 1,
the first resonance unit comprises a first resonance parameter adjusting unit and a second resonance parameter adjusting unit; the second resonance unit comprises a third resonance parameter adjusting unit and a fourth resonance parameter adjusting unit;
a first end of the first resonance parameter adjusting unit is connected with the first coil, and a second end of the first resonance parameter adjusting unit is connected with the first bridge circuit;
the second resonance parameter adjusting unit is connected with the first resonance parameter adjusting unit and the first driving unit and is configured to be driven to be turned on or off by the first controller;
a first end of the third resonance parameter adjusting unit is connected with the second coil, and a second end of the third resonance parameter adjusting unit is connected with the second bridge circuit;
the fourth resonance parameter adjustment unit is connected to the third resonance parameter adjustment unit and the second driving unit, and is configured to be driven to turn on or off by the second controller.
3. The bidirectional bridge resonant converter of claim 1,
the first resonance parameter adjusting unit comprises a first capacitor and a first inductor;
after the first capacitor and the first inductor are connected in series, one end of the first capacitor is connected with the first bridge circuit, and the other end of the first capacitor is connected with the first coil.
4. The bidirectional bridge resonant converter of claim 3, wherein the second resonant parameter adjusting unit comprises a second capacitor, a first relay switch, and a first driving tube;
the second capacitor is connected with one end of the first capacitor after the contact of the first relay switch is connected in series, the other end of the first capacitor is connected with the second end of the first capacitor, the first pin of the first driving tube is connected with the coil of the first relay switch, the second pin of the first driving tube is grounded, and the third pin of the first driving tube is connected with the first controller.
5. Bidirectional bridge resonant converter according to claim 3 or 4,
the second resonance parameter adjusting unit comprises a second inductor, a second relay switch and a second driving tube; after the second inductor is connected with the first capacitor and the first inductor in series, one end of the second inductor is connected with the first bridge circuit, and the other end of the second inductor is connected with the first coil; the first connection end of the contact of the second relay switch is connected with the first end of the second inductor, the first connection end of the contact of the second relay switch is connected with the second end of the second inductor, the first pin of the second driving tube is connected with the coil of the second relay switch, the second pin of the second driving tube is grounded, and the third pin of the second driving tube is connected with the first controller.
6. The bidirectional bridge resonant converter of claim 2, wherein the third resonant parameter adjustment unit includes a third capacitor and a third inductor;
and after the third capacitor and the third inductor are connected in series, one end of the third capacitor is connected with the second bridge circuit, and the other end of the third capacitor is connected with the second coil.
7. The bidirectional bridge resonant converter of claim 6, wherein the fourth resonant parameter adjustment unit includes a fourth capacitor, a third relay switch, and a third drive transistor;
the fourth capacitor is connected with one end of the third relay switch after the contact of the third relay switch is connected in series, the first end of the third capacitor is connected with the other end of the third capacitor, the first pin of the third driving tube is connected with the coil of the third relay switch, the second pin of the third driving tube is grounded, and the third pin of the third driving tube is connected with the second controller.
8. The bidirectional bridge resonant converter according to claim 6 or 7, characterized in that the fourth resonance parameter adjusting unit comprises a fourth inductor, a fourth relay switch and a fourth drive tube; after the fourth inductor is connected with the third capacitor and the third inductor in series, one end of the fourth inductor is connected with the second bridge circuit, and the other end of the fourth inductor is connected with the second coil; the first connection end of the contact of the fourth relay switch is connected with the first end of the fourth inductor, the first connection end of the contact of the fourth relay switch is connected with the second end of the fourth inductor, the first pin of the fourth driving tube is connected with the coil of the fourth relay switch, the second pin of the fourth driving tube is grounded, and the third pin of the fourth driving tube is connected with the second controller.
9. The bidirectional bridge resonant converter of claim 1,
the first bridge circuit comprises a first switching tube, a second switching tube, a third switching tube and a fourth switching tube; the first end is connected respectively to the first pin of first switch tube with the first pin of second switch tube, the second pin of first switch tube with the first pin of third switch tube is connected respectively first resonance unit, the second pin of second switch tube with the first pin of fourth switch tube is connected respectively vary voltage circuit's first coil, the second pin of third switch tube with the second pin of fourth switch tube all grounds, the third pin of first switch tube, the third pin of third switch tube, the third pin of second switch tube with the third pin of fourth switch tube is connected respectively first drive unit.
10. The bidirectional bridge resonant converter of claim 9, wherein the first driving unit includes a first driving chip U103 and a second driving chip U105;
the first pin of the first driving chip U103 and the second pin of the second driving chip U105 are connected with each other and then connected with the second controller, the second pin of the first driving chip U103 and the first pin of the second driving chip U105 are connected with each other and then connected with the second controller, the third pin of the first switch tube is connected with the sixteenth pin of the first driving chip U103, the third pin of the third switch tube is connected with the eleventh pin of the first driving chip U103, the third pin of the second switch tube is connected with the sixteenth pin of the second driving chip U105, and the third pin of the fourth switch tube is connected with the eleventh pin of the second driving chip U105.
11. The bidirectional bridge resonant converter of claim 1,
the second bridge circuit comprises a fifth switching tube, a sixth switching tube, a seventh switching tube, an eighth switching tube and a second driving unit; the first pin of the fifth switching tube and the first pin of the sixth switching tube are respectively connected with the second end, the second pin of the fifth switching tube and the first pin of the seventh switching tube are respectively connected with the second coil of the voltage transformation circuit, the second pin of the sixth switching tube and the first pin of the eighth switching tube are respectively connected with the second resonance unit, and the second pin of the fifth switching tube and the second pin of the eighth switching tube are both grounded; the third pin of the fifth switching tube, the third pin of the eighth switching tube, the third pin of the sixth switching tube and the third pin of the seventh switching tube are respectively connected with the second driving unit.
12. The bidirectional bridge resonant converter of claim 11, wherein the second driving unit includes a third driving chip U104 and a fourth driving chip U106;
the first pin and the second pin of the third driving chip U104 are connected with each other and then connected with the second controller, the first pin and the second pin of the fourth driving chip U106 are connected with each other and then connected with the second controller, the third pin of the fifth switching tube is connected with the twelfth pin of the third driving chip U104 and the third pin of the eighth switching tube is connected with the sixth pin of the third driving chip U104, the third pin of the sixth switching tube is connected with the twelfth pin of the fourth driving chip U106, and the third pin of the seventh switching tube is connected with the sixth pin of the fourth driving chip U106.
13. The bidirectional bridge resonant converter of claim 1, wherein the first bypass unit includes a fifth relay switch and a fifth drive tube;
the first end of the contact of the fifth relay switch is connected with the first bridge circuit, the second end of the contact of the fifth relay switch is connected with the first coil, the first pin of the fifth driving tube is connected with the coil of the fifth relay switch, the second pin of the fifth driving tube is grounded, and the third pin of the fifth driving tube is connected with the first controller.
14. The bidirectional bridge resonant converter of claim 1, wherein the second bypass unit includes a sixth relay switch and a sixth drive tube;
the first end of the contact of the sixth relay switch is connected with the second bridge circuit, the second end of the contact of the sixth relay switch is connected with the second coil, the first pin of the sixth driving tube is connected with the coil of the sixth relay switch, the second pin of the sixth driving tube is grounded, and the third pin of the sixth driving tube is connected with the second controller.
15. A power supply comprising a bidirectional bridge resonant converter as claimed in any one of claims 1 to 14.
CN202120721417.2U 2021-04-07 2021-04-07 Bidirectional bridge type resonant converter and power supply Active CN215120577U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120721417.2U CN215120577U (en) 2021-04-07 2021-04-07 Bidirectional bridge type resonant converter and power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120721417.2U CN215120577U (en) 2021-04-07 2021-04-07 Bidirectional bridge type resonant converter and power supply

Publications (1)

Publication Number Publication Date
CN215120577U true CN215120577U (en) 2021-12-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120721417.2U Active CN215120577U (en) 2021-04-07 2021-04-07 Bidirectional bridge type resonant converter and power supply

Country Status (1)

Country Link
CN (1) CN215120577U (en)

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