CN113131752A - High-efficient emergency power supply power conversion unit - Google Patents
High-efficient emergency power supply power conversion unit Download PDFInfo
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- CN113131752A CN113131752A CN202110413172.1A CN202110413172A CN113131752A CN 113131752 A CN113131752 A CN 113131752A CN 202110413172 A CN202110413172 A CN 202110413172A CN 113131752 A CN113131752 A CN 113131752A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a high-efficiency emergency power supply power conversion unit which comprises an electric storage battery unit, a power conversion unit, a voltage-multiplying resonant network unit, a transformer self-driven synchronous rectification filter unit, a commercial power and emergency switching output unit, a load lamp and a system signal detection control and pulse width frequency driving unit, wherein the output end of the electric storage battery unit is connected with the input end of the power conversion unit, and the output end of the power conversion unit is connected with the input end of the voltage-multiplying resonant network unit. The high-efficiency emergency power supply power conversion unit is high in integration level, good in performance and high in conversion efficiency; in addition, synchronous rectification is realized by utilizing the voltage-multiplying resonant network and a high-frequency voltage transformation self-driving signal, so that the system efficiency is greatly improved, the product is safer and more reliable, and the device is widely applied to occasions such as markets, hotels, hospitals, entertainment places, industrial and mining, petrochemical industry, commercial office and civil buildings and emergency lamps with higher requirements or more special requirements, and the application range is widened.
Description
Technical Field
The invention relates to the field of power supply conversion, in particular to a high-efficiency emergency power supply power conversion unit.
Background
The emergency power supply power conversion device is widely applied to buildings such as industrial and mining, petrifaction, machine rooms, storehouses and malls, and is used for emergency lighting after the mains supply is powered off. The existing emergency power supply power conversion unit generally converts a storage battery power supply by a power conversion unit, then carries out rectification and filtering, outputs the filtered voltage to a load lamp for use by an output conversion unit, and controls the output switching and driving control of commercial power illumination and emergency illumination by a signal detection control unit for detecting the voltage; the power conversion generally comprises a high-frequency conversion circuit consisting of two triodes and a transformer; the rectification filter part is generally rectified into direct current output by a bridge rectification capacitor, and the conventional emergency power supply power conversion unit often has the following problems in the use process: 1. the conventional emergency power supply power conversion unit has low integration level, low performance and low conversion efficiency, and cannot meet the use requirement; 2. the existing emergency power supply power conversion unit is generally rectified into direct current output by a bridge rectifier and a capacitor. The common rectifier bridge has larger voltage drop, so that the problems of large heat productivity and heat dissipation exist during low-voltage large-current output, the product volume is enlarged, the reliability is reduced, and safety accidents and irreparable loss are easily caused; 3. the power conversion unit of the existing emergency power supply has a narrow application range and is not suitable for emergency lamps with higher requirements or special requirements.
Disclosure of Invention
The invention mainly aims to provide a high-efficiency emergency power supply power conversion unit which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-efficiency emergency power supply power conversion unit comprises an electric storage battery unit, a power conversion unit, a voltage-multiplying resonant network unit, a transformer self-driven synchronous rectification filter unit, a mains supply and emergency switching output unit, a load lamp and a system signal detection control and pulse width frequency driving unit, wherein the output end of the electric storage battery unit is connected with the input end of the power conversion unit, the output end of the power conversion unit is connected with the input end of the voltage-multiplying resonant network unit, the output end of the voltage-multiplying resonant network unit is connected with the input end of the transformer self-driven synchronous rectification filter unit, the output end of the transformer self-driven synchronous rectification filter unit is respectively correspondingly connected with the input end of the mains supply and emergency switching output unit and the input end of the system signal detection control and pulse width frequency driving unit, the output end of the mains supply and, the output end of the system signal detection control and pulse width frequency driving unit is respectively and correspondingly connected with the input end of the power conversion unit and the input end of the commercial power and emergency switching output unit.
Preferably, the power conversion unit includes a conversion unit body and a high frequency power conversion transformer, the conversion unit body includes a resistor R3, a resistor R5, a resistor R8, a resistor R10, a transistor Q2 and a transistor Q4, the resistor R3 is connected in series with the resistor R3, a gate of the transistor Q3 is connected with a connection point of the resistor R3 and the resistor R3, a drain of the transistor Q3 is connected with a PC 3 terminal, a drain of the transistor Q3 is connected with the PC 3 terminal, a source of the transistor Q3 is grounded, the resistor R3 and a capacitor C3 are connected in parallel between the drain of the transistor Q3 and the source of the transistor Q3, the resistor R3 is connected in series with the gate of the transistor Q3, a resistor R9 and a capacitor C6 are connected between the drain of the triode Q4 and the source of the triode Q4 in parallel, the resistor R9 and the capacitor C6 are connected in series, and the resistor R10 is connected between the gate of the triode Q4 and the source of the triode Q4 in parallel.
Preferably, the high-frequency power conversion transformer comprises a transformer T1A, a transformer T1B and a transformer T1C, one end of the transformer T1A is connected to the PC2, the other end of the transformer T1A is connected to the PC1, a capacitor C5 is connected in series to the transformer T1A, the negative electrode of the capacitor C5 is grounded, one end of the transformer T1B is a PO1 end, the other end of the transformer T1B is a VS2 end, one end of the transformer T1C is a VS3 end, and the other end of the transformer T1B is a GD2 end.
Preferably, the voltage-doubling resonant network unit comprises a coil L1, one end of the coil L1 is respectively connected in series with a capacitor C1 and a capacitor C3, and the capacitor C1 and the capacitor C3 are connected in series.
Preferably, the other end of the coil L1 is connected to a PO1 terminal, one end of the capacitor C1 is an OUT + terminal, and one end of the capacitor C3 is an OC-terminal.
Preferably, the transformer self-driven synchronous rectification filter unit comprises a triode Q1 and a triode Q3, the grid of the triode Q1 is connected with a resistor R1 and a resistor R2 respectively, the grid of the triode Q3 is connected with a resistor R7 and a resistor R6 respectively, the resistor R2 and the resistor R6 are connected in series, the resistor R1 and the resistor R7 are connected in series, the drain of the triode Q1 is connected with the OUT + end, the source of the triode Q1 is connected with the source of the triode Q3, and a capacitor C2 is connected between the drain of the triode Q3 and the OUT + end in parallel.
Preferably, the resistor R7 is connected to the terminal GD2, a connection point of the resistor R2 and the resistor R6 is respectively connected to the terminal VS2 and the terminal VS3, and a source of the transistor Q1 and a source of the transistor Q3 are respectively connected to the terminal VS2 and the terminal VS 3.
Preferably, the system signal detection control and pulse width frequency driving unit comprises a resistor R12, a resistor R14, a resistor R13, a resistor R11 and a capacitor C7, the resistor R12 and the resistor R14 are connected in series, the resistor R13, the resistor R11 and the capacitor C7 are connected in series, and the resistor R14 and the capacitor C7 are all grounded.
Compared with the prior art, the invention has the following beneficial effects:
1. in the invention, the emergency power supply power conversion unit is composed of the storage battery unit, the power conversion unit, the voltage-multiplying resonant network unit, the transformer self-driven synchronous rectification filtering unit, the commercial power and emergency switching unit and the system signal detection control and pulse width frequency driving unit, and has high integration level, good performance and high conversion efficiency.
2. According to the invention, synchronous rectification is realized by utilizing the voltage-multiplying resonant network and the self-driving signal of the high-frequency transformer, so that the system efficiency is greatly improved, the product is safer and more reliable, the problems of larger voltage drop of a common rectifier bridge, large heat productivity and heat dissipation during low-voltage large-current output are avoided, the product volume is reduced, and safety accidents and irreparable loss are avoided.
3. According to the high-efficiency emergency power supply power conversion device, all indexes meet the use requirements, and the high-efficiency emergency power supply power conversion device is widely applied to occasions such as markets, hotels, hospitals, entertainment places, industrial and mining, petrochemical industries, commercial offices, civil buildings and the like and emergency lamps with higher or more special requirements, so that the application range is widened.
Drawings
FIG. 1 is a schematic diagram of a power conversion unit of an efficient emergency power supply according to the present invention;
FIG. 2 is a circuit diagram of a power conversion unit of an efficient emergency power supply according to the present invention;
fig. 3 is a schematic structural diagram of a conversion unit body of the high-efficiency emergency power conversion unit according to the present invention;
fig. 4 is a schematic structural diagram of a high-frequency power conversion transformer of a power conversion unit of an efficient emergency power supply according to the present invention;
fig. 5 is a schematic structural diagram of a voltage-multiplying resonant network unit of a power conversion unit of an efficient emergency power supply according to the present invention;
FIG. 6 is a schematic structural diagram of a transformer self-driven synchronous rectification filter unit of the high-efficiency emergency power conversion unit according to the present invention;
fig. 7 is a schematic structural diagram of a system signal detection control and pulse width frequency driving unit of a power conversion unit of an efficient emergency power supply according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in FIGS. 1-7, a high-efficiency emergency power supply power conversion unit comprises an electric storage battery unit, a power conversion unit, a voltage-doubling resonant network unit, a transformer self-driven synchronous rectification filter unit, a commercial power and emergency switching output unit, a load lamp, a system signal detection control and pulse width frequency driving unit, wherein the output end of the electric storage battery unit is connected with the input end of the power conversion unit, the output end of the power conversion unit is connected with the input end of the voltage-doubling resonant network unit, the output end of the voltage-doubling resonant network unit is connected with the input end of the transformer self-driven synchronous rectification filter unit, the output end of the transformer self-driven synchronous rectification filter unit is respectively connected with the input end of the commercial power and emergency switching output unit and the input end of the system signal detection control and pulse width frequency driving unit, the output, the output end of the system signal detection control and pulse width frequency driving unit is respectively and correspondingly connected with the input end of the power conversion unit and the input end of the commercial power and emergency switching output unit.
The power conversion unit comprises a conversion unit body and a high-frequency power conversion transformer, wherein the conversion unit body comprises a resistor R3, a resistor R5, a resistor R8, a resistor R10, a transistor Q2 and a transistor Q4, the resistor R3 is connected in series with the resistor R5, the resistor R8 is connected in series with the resistor R10, a gate of the transistor Q2 is connected with a connection point of the resistor R3 and the resistor R5, a gate of the transistor Q4 is connected with a connection point of the resistor R8 and the resistor R10, a drain of the transistor Q2 is connected with a PC1 terminal, a drain of the transistor Q4 is connected with a PC2 terminal, a source of the transistor Q2 is grounded, a source of the transistor Q4 is grounded, a resistor R4 and a capacitor C4 are connected in parallel between the drain of the transistor Q2 and a source of the transistor Q2, a resistor R4 and a capacitor C4 are connected in series, a gate of the transistor R5 is connected in parallel with a source of the transistor Q2, and a drain of the transistor Q2 is connected with a capacitor C2 in parallel with, the resistor R9 and the capacitor C6 are connected in series, the resistor R10 is connected in parallel between the grid of the triode Q4 and the source of the triode Q4, and the power conversion unit is used for carrying out power supply conversion on the storage battery; the high-frequency power conversion transformer comprises a transformer T1A, a transformer T1B and a transformer T1C, one end of the transformer T1A is connected with a PC2 end, the other end of the transformer T1A is connected with a PC1 end, a capacitor C5 is connected in series on the transformer T1A, the negative electrode of the capacitor C5 is grounded, one end of the transformer T1B is a PO1 end, the other end of the transformer T1B is a VS2 end, one end of the transformer T1C is a VS3 end, and the other end of the transformer T1B is a GD2 end; the voltage-multiplying resonant network unit comprises a coil L1, one end of the coil L1 is respectively connected with a capacitor C1 and a capacitor C3 in series, the capacitor C1 and the capacitor C3 are connected in series, and the voltage-multiplying resonant network unit can realize rectification operation; in order to install and connect the voltage-multiplying resonant network unit, the other end of the coil L1 is connected with a PO1 end, one end of the capacitor C1 is an OUT + end, and one end of the capacitor C3 is an OC-end; the transformer self-driven synchronous rectification filter unit comprises a triode Q1 and a triode Q3, the grid of the triode Q1 is connected with a resistor R1 and a resistor R2 respectively, the grid of the triode Q3 is connected with a resistor R7 and a resistor R6 respectively, the resistor R2 and the resistor R6 are connected in series, the resistor R1 and the resistor R7 are connected in series, the drain of the triode Q1 is connected with an OUT + end, the source of the triode Q1 is connected with the source of the triode Q3, a capacitor C2 is connected between the drain of the triode Q3 and the OUT + end in parallel, and the voltage-multiplying resonant network unit and the transformer self-driven synchronous rectification filter unit can realize synchronous rectification, so that the system efficiency is greatly improved, and the product is safer; in order to mount and connect the transformer self-driven synchronous rectification filter unit, a resistor R7 is connected with a GD2 end, the connection point of a resistor R2 and a resistor R6 is respectively connected with a VS2 end and a VS3 end, and the source electrode of a triode Q1 and the source electrode of a triode Q3 are respectively connected with a VS2 end and a VS3 end; the system signal detection control and pulse width frequency driving unit comprises a resistor R12, a resistor R14, a resistor R13, a resistor R11 and a capacitor C7, the resistor R12 and the resistor R14 are connected in series, the resistor R13, the resistor R11 and the capacitor C7 are connected in series, the resistor R14 and the capacitor C7 are both grounded, and the signal detection control unit is used for detecting the voltage to control output switching and driving control of commercial power illumination and emergency illumination.
The emergency power conversion unit mainly comprises a storage battery unit, a power conversion unit, a voltage-multiplying resonant network unit, a transformer self-driven synchronous rectification filter unit, a commercial power and emergency switching unit, a system signal detection control and pulse width frequency driving unit. The integration level is high, the performance is good, and the conversion efficiency is high. The conversion efficiency of the conventional emergency lighting power supply is greatly improved, the problems of high energy consumption and large heat productivity are solved, and the reliability of the product is improved. The lamp is widely applied to occasions such as markets, hotels, hospitals, entertainment places, industrial and mining, petrochemical industry, commercial office, civil buildings and the like and emergency lamps with higher or more special requirements; synchronous rectification is realized by utilizing the voltage-multiplying resonant network and the high-frequency voltage transformation self-driving signal, so that the system efficiency is greatly improved, and the product is safer and more reliable. For example, an explosion-proof emergency lighting system of a certain chemical plant room can only adopt a high-efficiency conversion device with low heating value due to illumination, volume and safety consideration. The common conversion device causes the temperature of the product to rise, has short service life and is easy to damage. The product needs to be replaced frequently due to safety considerations, resulting in a waste of energy and resources. The high-efficiency emergency power supply power conversion device provided by the invention has the advantages that various indexes meet the use requirements, the occurrence of faults is reduced in the use process, and the waste of energy is reduced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a high-efficient emergency power supply power conversion unit, includes electric power storage battery cell, power conversion unit, voltage-multiplying resonance network unit, transformer self-driven synchronous rectification filter unit, commercial power and emergent switching output unit, load lamps and lanterns and system signal detection control and pulse width frequency drive unit, its characterized in that: the output end of the electric storage battery unit is connected with the input end of the power conversion unit, the output end of the power conversion unit is connected with the input end of the voltage-multiplying resonant network unit, the output end of the voltage-multiplying resonant network unit is connected with the input end of the transformer self-driven synchronous rectification filter unit, the output end of the transformer self-driven synchronous rectification filter unit is correspondingly connected with the input end of the commercial power and emergency switching output unit and the input end of the system signal detection control and pulse width frequency drive unit respectively, the output end of the commercial power and emergency switching output unit is connected with the input end of the load lamp, and the output end of the system signal detection control and pulse width frequency drive unit is correspondingly connected with the input end of the power conversion.
2. The high efficiency emergency power conversion unit of claim 1, wherein: the power conversion unit comprises a conversion unit body and a high-frequency power conversion transformer, wherein the conversion unit body comprises a resistor R3, a resistor R5, a resistor R8, a resistor R10, a transistor Q2 and a transistor Q4, the resistor R3 is connected with the resistor R3 in series, the gate of the transistor Q3 is connected with the connection point of the resistor R3 and the resistor R3, the drain of the transistor Q3 is connected with the PC 3 end, the source of the transistor Q3 is grounded, the resistor R3 and a capacitor C3 are connected between the drain of the transistor Q3 and the source of the transistor Q3 in parallel, and the gate of the resistor R3 is connected between the gate of the transistor Q3 and the source of the transistor Q3 in series, a resistor R9 and a capacitor C6 are connected between the drain of the triode Q4 and the source of the triode Q4 in parallel, the resistor R9 and the capacitor C6 are connected in series, and the resistor R10 is connected between the gate of the triode Q4 and the source of the triode Q4 in parallel.
3. The high efficiency emergency power conversion unit of claim 2, wherein: the high-frequency power conversion transformer comprises a transformer T1A, a transformer T1B and a transformer T1C, one end of the transformer T1A is connected with a PC2 end, the other end of the transformer T1A is connected with a PC1 end, a capacitor C5 is connected in series on the transformer T1A, the negative electrode of the capacitor C5 is grounded, one end of the transformer T1B is a PO1 end, the other end of the transformer T1B is a VS2 end, one end of the transformer T1C is a VS3 end, and the other end of the transformer T1B is a GD2 end.
4. The high efficiency emergency power conversion unit of claim 1, wherein: the voltage-multiplying resonant network unit comprises a coil L1, one end of the coil L1 is respectively connected with a capacitor C1 and a capacitor C3 in series, and the capacitor C1 and the capacitor C3 are connected in series.
5. The high efficiency emergency power supply power conversion unit of claim 4, wherein: the other end of the coil L1 is connected with a PO1 terminal, one end of the capacitor C1 is an OUT + terminal, and one end of the capacitor C3 is an OC-terminal.
6. The high efficiency emergency power conversion unit of claim 1, wherein: the transformer self-driven synchronous rectification filter unit comprises a triode Q1 and a triode Q3, the grid of the triode Q1 is connected with a resistor R1 and a resistor R2 respectively, the grid of the triode Q3 is connected with a resistor R7 and a resistor R6 respectively, the resistor R2 and the resistor R6 are connected in series, the resistor R1 and the resistor R7 are connected in series, the drain of the triode Q1 is connected with the OUT + end, the source of the triode Q1 is connected with the source of the triode Q3, and a capacitor C2 is connected between the drain of the triode Q3 and the OUT + end in parallel.
7. The high efficiency emergency power supply power conversion unit of claim 6, wherein: the resistor R7 is connected with the GD2 end, the connection point of the resistor R2 and the resistor R6 is respectively connected with the VS2 end and the VS3 end, and the source electrode of the triode Q1 and the source electrode of the triode Q3 are respectively connected with the VS2 end and the VS3 end.
8. The high efficiency emergency power conversion unit of claim 1, wherein: the system signal detection control and pulse width frequency driving unit comprises a resistor R12, a resistor R14, a resistor R13, a resistor R11 and a capacitor C7, wherein the resistor R12 and the resistor R14 are connected in series, the resistor R13, the resistor R11 and the capacitor C7 are connected in series, and the resistor R14 and the capacitor C7 are both grounded.
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| CN202110413172.1A CN113131752B (en) | 2021-04-16 | 2021-04-16 | High-efficient emergency power source power conversion unit |
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| CN209767210U (en) * | 2019-06-12 | 2019-12-10 | 淄博矽微电子科技有限公司 | Vehicle-mounted charger of high-power pure electric refrigerator car |
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| CN1607718A (en) * | 2003-09-30 | 2005-04-20 | 索尼株式会社 | Switching power supply circuit |
| CN101488718A (en) * | 2009-03-05 | 2009-07-22 | 英飞特电子（杭州）有限公司 | Voltage multiplying synchronous rectifying multi-resonance soft switching converter |
| CN101924483A (en) * | 2010-07-27 | 2010-12-22 | 浙江大学 | Voltage-multiplied synchronizing rectifier circuit with energy recovery |
| CN102158096A (en) * | 2011-05-11 | 2011-08-17 | 南京博兰得电子科技有限公司 | Non-isolated resonant converter |
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| CN209767210U (en) * | 2019-06-12 | 2019-12-10 | 淄博矽微电子科技有限公司 | Vehicle-mounted charger of high-power pure electric refrigerator car |
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| CN113131752B (en) | 2022-10-25 |
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