CN217469464U - Bidirectional inverter - Google Patents
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- CN217469464U CN217469464U CN202221033881.3U CN202221033881U CN217469464U CN 217469464 U CN217469464 U CN 217469464U CN 202221033881 U CN202221033881 U CN 202221033881U CN 217469464 U CN217469464 U CN 217469464U
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Abstract
The utility model relates to the technical field of inverters, in particular to a bidirectional inverter; the system comprises an inversion unit, an energy storage charging unit and an inversion switching unit, wherein the inversion unit and the energy storage charging unit are both connected with a power grid, the inversion unit is also connected with the energy storage unit, and the inversion switching unit is respectively connected with the inversion unit and the energy storage charging unit; the inversion unit inverts the electric energy stored in the energy storage unit into 220V alternating current and accesses the power grid, and the energy storage charging unit rectifies and reduces the voltage of the 220V alternating current on the power grid to charge the energy storage unit; the inversion switching unit controls the inversion unit or the energy storage charging unit to work independently; therefore, the energy storage unit is charged by using the electric energy on the power grid, and the electric energy stored by the energy storage unit is used for providing power supply for the equipment on the power grid; the grid-connected bidirectional power supply is realized, and the circuit is simple, low in cost, small in size, convenient to use and wide in applicability.
Description
Technical Field
The utility model relates to an inverter technical field, more specifically say, relate to a two-way inverter.
Background
In recent years, distributed power generation has been developed rapidly by virtue of its reliability and economy, and the characteristics of less pollution, high reliability and high energy utilization efficiency. A Micro Grid (MG) is a Micro power Grid composed of a Distributed Generation (DG) system, an energy storage system, and a load, and may be selected to operate in parallel with a power distribution network or independently according to needs.
The energy storage system mainly comprises an energy storage inverter and an energy storage unit. The energy storage inverter has the main function of realizing the energy bidirectional transmission between the electric energy of the alternating current power grid and the electric energy of the energy storage unit. The energy storage unit can be a direct current energy storage unit, such as a super capacitor bank, a storage battery pack, a flywheel battery and the like, and the main power is to store electric energy and provide direct current. The energy storage system not only can quickly and effectively stabilize the fluctuation of random electric energy or tide of the distributed power generation system and improve the accepting capability of the power grid to large-scale renewable energy power generation (wind energy and photovoltaic), but also can receive a dispatching instruction, absorb or supplement peak-valley electric energy of the power grid and provide reactive power so as to improve the power supply quality and the economic benefit of the power grid. When the power grid fails or is in power failure, the energy storage system further has an independent networking power supply function so as to improve the power supply safety of the load.
However, most of conventional existing energy storage inverter systems are used by high-power parallel national power grids, and when the inverter systems are applied to low-power internal power grids, the inverter systems are high in cost and large in size, so that the use requirements of people cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a simple structure, with low costs, small two-way inverter.
The utility model provides a technical scheme that its technical problem adopted is:
constructing a bidirectional inverter, which comprises an inversion unit, an energy storage charging unit and an inversion switching unit; the inversion switching unit controls the inversion unit and the energy storage charging unit to work, and the inversion switching unit controls the inversion unit or the energy storage charging unit to work independently;
the energy storage charging unit is used for rectifying and reducing the 220V alternating current on the power grid to charge the energy storage unit;
the inversion unit and the energy storage charging unit are connected with the power grid, the inversion unit is further connected with the energy storage unit, and the inversion switching unit is respectively connected with the inversion unit and the energy storage charging unit.
The utility model discloses a two-way inverter, wherein, the energy storage unit is the battery;
the inversion switching unit is a two-way normally open and closed switch, a first public end of the two-way normally open and closed switch is connected with a live wire of the power grid, and a first normally closed end of the two-way normally open and closed switch is connected with the energy storage charging unit; and a second common end of the two-way normally open and normally closed switch is connected with the positive electrode of the storage battery, and a second normally open end is connected with the inverter unit.
Bidirectional inverter, wherein, energy storage charging unit includes: the power supply comprises a rectifier bridge, a power supply management chip, a first transformer, a photoelectric coupler and a field effect transistor;
the first input end of the rectifier bridge is connected with the first normally-closed end of the two-way normally-open normally-closed switch, and the second input end of the rectifier bridge is connected with the zero line of the power grid; the power supply management circuit comprises a rectifier bridge, a first resistor, a second resistor and a first capacitor, wherein the positive electrode output end of the rectifier bridge is connected with the first resistor, the second resistor and the first capacitor, the other end of the first resistor is connected with the VCC end of the power supply management chip, the other end of the second resistor is connected with the other end of the first capacitor and is also connected with the negative electrode of a first diode, the positive electrode of the first diode is connected with the second end of a first primary coil of a first transformer, and the first end of the first primary coil of the first transformer is connected with the positive electrode output end of the rectifier bridge;
the OUT end of the power management chip is connected with a third resistor, the other end of the third resistor is connected with the grid electrode of the field effect transistor and is also connected with a fourth resistor, and the other end of the fourth resistor is connected with the negative electrode output end of the rectifier bridge; the drain electrode of the field effect transistor is connected with the second end of the first primary coil of the first transformer, the source electrode of the field effect transistor is connected with a fifth resistor and a sixth resistor, the other end of the fifth resistor is connected with the negative electrode output end of the rectifier bridge, and the other end of the sixth resistor is connected with the SENSE end of the power management chip;
and a first end of a second primary coil of the first transformer is connected with the anode of a second diode, the cathode of the second diode is connected with the other end of the first resistor, and a second end of the second primary coil of the first transformer is connected with the cathode output end of the rectifier bridge.
The utility model discloses a bidirectional inverter, wherein, the first end of the secondary coil of first transformer is connected the positive pole of third diode, the negative pole of third diode is connected with the positive pole of battery, the negative pole ground connection of battery, the second end of the secondary coil of first transformer also ground connection;
the negative electrode of the second diode is also connected with a seventh resistor and an eighth resistor, the other end of the seventh resistor is connected with the positive electrode of the light-emitting diode of the photoelectric coupler, the other end of the eighth resistor is connected with a ninth resistor and a three-terminal voltage-regulator tube, and the other end of the ninth resistor is grounded; the other end of the eighth resistor is connected with a pin 1 of the three-terminal voltage regulator tube, and a pin 2 of the three-terminal voltage regulator tube is grounded and a pin 3 of the three-terminal voltage regulator tube is connected with the cathode of a light emitting diode of the photoelectric coupler;
and a collector of a backlight detector of the photoelectric coupler is connected with the time end of the power management chip, an emitter of the backlight detector is connected with a tenth resistor, and the other end of the tenth resistor is connected with the negative output end of the rectifier bridge.
Bidirectional inverter, wherein, inverter circuit includes: the multi-frequency oscillator comprises a multi-frequency oscillator, a first current amplifying circuit, a second current amplifying circuit and a second transformer;
the VDD end of the multi-frequency oscillator is connected with the second normally open end of the two-way normally open and normally closed switch, and the VSS end of the multi-frequency oscillator is grounded;
the first current amplifying circuit includes: the storage battery comprises a first operational amplifier, a first triode, a second triode, a third triode and a fourth triode, wherein pins 4 of the first operational amplifier are connected with the positive electrode of the storage battery, and pins 11 of the first operational amplifier are grounded; an eleventh resistor is connected to a pin 10 of the multivibrator, the other end of the eleventh resistor is connected to the same-direction input end of the first operational amplifier, and the reverse-direction input end of the first operational amplifier is connected to the output end; the collector of the first triode, the collector of the second triode, the collector of the third triode and the collector of the fourth triode are all connected in parallel and are also connected with the first end of the primary coil of the second transformer; the base electrode of the second triode is connected with the emitting electrode of the first triode, the emitting electrodes of the second triode and the third triode are respectively connected with the base electrode of the third triode and the base electrode of the fourth triode, and the emitting electrode of the third triode and the emitting electrode of the fourth triode are both grounded;
the second current amplifying circuit includes: the multi-frequency oscillator comprises a second operational amplifier, a fifth triode, a sixth triode, a seventh triode and an eighth triode, wherein a pin 11 of the multi-frequency oscillator is connected with a twelfth resistor in a linked mode, the other end of the twelfth resistor is connected with the same-direction input end of the second operational amplifier, and the reverse input end of the second operational amplifier is connected with the output end; a collector electrode of the fifth triode, a collector electrode of the sixth triode, a collector electrode of the seventh triode and a collector electrode of the eighth triode are all connected in parallel and are also connected with a third end of the primary coil of the second transformer, an emitter electrode of the fifth triode is connected with a base electrode of the sixth triode, an emitter electrode of the sixth triode is respectively connected with a base electrode of the seventh triode and a base electrode of the eighth triode, and an emitter electrode of the seventh triode and an emitter electrode of the eighth triode are all grounded;
and the second end of the primary coil of the second transformer is grounded, and the first end and the second end of the secondary coil of the second transformer are connected with the live wire and the zero wire of the power grid in a one-to-one manner.
The beneficial effects of the utility model reside in that: the inversion unit inverts the electric energy stored in the energy storage unit into 220V alternating current and accesses the power grid, and the energy storage charging unit rectifies and reduces the voltage of the 220V alternating current on the power grid to charge the energy storage unit; the inversion switching unit controls the inversion unit or the energy storage charging unit to work independently; therefore, the energy storage unit is charged by using the electric energy on the power grid, and the electric energy stored by the energy storage unit is used for providing power supply for the equipment on the power grid; the grid-connected bidirectional power supply is realized, and the circuit is simple, the cost is low, the size is small, the use is convenient, and the applicability is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic circuit diagram of an energy storage unit, an inversion switching unit and an inversion unit of a bidirectional inverter according to a preferred embodiment of the present invention;
fig. 2 is a schematic circuit diagram of the energy storage charging unit of the bidirectional inverter according to the preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The two-way inverter according to the preferred embodiment of the present invention is shown in fig. 1, and also refer to fig. 2; the system comprises an inversion unit 100, an energy storage charging unit 200 and an inversion switching unit 110; the inversion switching unit 110 controls the inversion unit 100 and the energy storage charging unit 200 to work, and the inversion switching unit 110 controls the inversion unit 100 or the energy storage charging unit 200 to work independently;
the inversion unit 100 inverts the electric energy stored in the energy storage unit 300 into 220V alternating current and accesses the power grid, and the energy storage charging unit 200 rectifies and reduces the voltage of the 220V alternating current on the power grid to charge the energy storage unit 300;
the inversion unit 100 and the energy storage charging unit 200 are both connected with a power grid, the inversion unit 100 is also connected with the energy storage unit 300, and the inversion switching unit 110 is respectively connected with the inversion unit 100 and the energy storage charging unit 200;
the inversion unit 100 inverts the electric energy stored in the energy storage unit 300 into 220V alternating current and accesses the power grid, and the energy storage charging unit 200 rectifies and reduces the voltage of the 220V alternating current on the power grid to charge the energy storage unit 300; the inversion switching unit 110 controls the inversion unit 100 or the energy storage charging unit 200 to work independently; therefore, the energy storage unit 300 can be charged by using the electric energy on the power grid, and the electric energy stored by the energy storage unit 300 can be used for providing power supply for equipment on the power grid, so that grid-connected bidirectional power supply is realized, and the power supply device is simple in circuit, low in cost, small in size, convenient to use and wide in applicability.
As shown in fig. 1 and 2, energy storage unit 300 is a battery BAT 1; the inversion switching unit 110 is a two-way normally open and normally closed switch SW2, a first public end of the two-way normally open and normally closed switch SW2 is connected with a live wire of a power grid, and a first normally closed end is connected with the energy storage charging unit 200; a second common end of the two-way normally open and normally closed switch SW2 is connected with the anode of the storage battery BAT1, and a second normally open end is connected with the inverter unit 100; the two-way normally-open normally-closed switch SW2 is used for charging the energy storage charging unit 200 by default, so that other electric equipment on the power grid inverter can be conveniently used after the power failure of the power grid (small-scale independent power grid); further, normally open normally closed switch SW2 with the double-circuit and replace for double-circuit normally open normally closed contactor (not shown in the figure), live wire, the zero line of the parallelly connected electric wire netting in the coil both ends of contactor realize carrying out the work of generating electricity in energy storage unit 300 and inverter unit 100 at the automatic switch-over of electric wire netting outage, still can parallelly connected energy storage capacitor in order to realize seamless switching power supply main part on the electric wire netting, if: a grid or inverter unit 100.
As shown in fig. 2, the energy storage charging unit 200 includes: the power supply comprises a rectifier bridge BR1, a power supply management chip U3, a first transformer TR1, a photoelectric coupler U4 and a field effect transistor Q9;
a first input end of the rectifier bridge BR1 is connected with a first normally closed end of a two-way normally open normally closed switch SW2, and a second input end of the rectifier bridge BR1 is connected with a zero line of a power grid; the positive output end of the rectifier bridge BR1 is connected with a first resistor R5, a second resistor R10 and a first capacitor C7, the other end of the first resistor R5 is connected with the VCC end of the power management chip U3, the other end of the second resistor R10 is connected with the other end of the first capacitor C7 and also connected with the negative electrode of a first diode D1, the positive electrode of the first diode D1 is connected with the second end of the first primary coil of the first transformer TR1, and the first end of the first primary coil of the first transformer TR1 is connected with the positive output end of the rectifier bridge BR 1;
the OUT end of the power management chip U3 is connected with a third resistor R6, the other end of the third resistor R6 is connected with the grid of a field effect transistor Q9 and is also connected with a fourth resistor R8, and the other end of the fourth resistor R8 is connected with the negative electrode output end of a rectifier bridge BR 1; the drain electrode of the field effect transistor Q9 is connected with the second end of the first primary coil of the first transformer TR1, the source electrode of the field effect transistor Q9 is connected with a fifth resistor R7 and a sixth resistor R13, the other end of the fifth resistor R7 is connected with the negative output end of the rectifier bridge BR1, and the other end of the sixth resistor R13 is connected with the SENSE end of the power management chip U3;
a first end of a second primary coil of the first transformer TR1 is connected with an anode of a second diode D3, a cathode of the second diode D3 is connected with the other end of the first resistor R5, and a second end of the second primary coil of the first transformer TR1 is connected with a cathode output end of the rectifier bridge BR 1; the power management chip U3 is used for controlling the first transformer TR1 to carry out work and charging management, the circuit is simple, and the size is small; the first transformer TR1 is used for voltage reduction.
As shown in fig. 1 and 2, a first end of the secondary coil of the first transformer TR1 is connected to the anode of the third diode D4, the cathode of the third diode D4 is connected to the anode of the battery BAT1, the cathode of the battery BAT1 is grounded, and a second end of the secondary coil of the first transformer TR1 is also grounded;
the negative electrode of the second diode D3 is also connected with a seventh resistor R15 and an eighth resistor R14, the other end of the seventh resistor R15 is connected with the anode of a light-emitting diode of the photoelectric coupler U4, the other end of the eighth resistor R14 is connected with a ninth resistor R19 and a three-terminal voltage regulator tube U5, and the other end of the ninth resistor R19 is grounded; the other end of the eighth resistor R14 is connected with a pin 1 of a three-terminal voltage regulator tube U5, a pin 2 of the three-terminal voltage regulator tube U5 is grounded, and a pin 3 is connected with the negative electrode of a light emitting diode of a photoelectric coupler U4;
a collector of a backlight detector of the photoelectric coupler U4 is connected with a TION end of the power management chip U3, an emitter of the backlight detector is connected with a tenth resistor R18, and the other end of the tenth resistor R18 is connected with a negative output end of the rectifier bridge BR 1; the energy storage charging unit 200 is an isolation power supply and is isolated from the photoelectric coupler U4 through the first transformer TR1, so that the stability of the circuit is improved.
As shown in fig. 2, the inverter circuit 100 includes: a multivibrator U2, first and second current amplification circuits 101 and 102, and a second transformer T1;
the VDD end of the multivibrator U2 is connected with the second normally open end of the two-way normally open and normally closed switch SW2, and the VSS end is grounded;
the first current amplifying circuit 101 includes: a, a first triode Q1, a second triode Q2, a third triode Q3 and a fourth triode Q4, wherein a pin 4 of the first operational amplifier U1 is connected with the positive electrode of a storage battery BAT1, and a pin 11 of the first operational amplifier U1 is grounded; an eleventh resistor R2 is connected with a pin 10 of the multivibrator U2, the other end of the eleventh resistor R2 is connected with the same-direction input end of a first operational amplifier U1: A, and the reverse input end of the first operational amplifier U1: A is connected with the output end; the collector of the first triode Q1, the collector of the second triode Q2, the collector of the third triode Q3 and the collector of the fourth triode Q4 are all connected in parallel and also connected with the first end of the primary coil of the second transformer T1; the base electrode of the second triode Q2 is connected with the emitter electrode of the first triode Q1, the emitter electrodes are respectively connected with the base electrode of the third triode Q3 and the base electrode of the fourth triode Q4, and the emitter electrode of the third triode Q3 and the emitter electrode of the fourth triode Q4 are both grounded;
the second current amplifying circuit 102 includes: a second operational amplifier U1, a fifth triode Q5, a sixth triode Q6, a seventh triode Q7 and an eighth triode Q8, wherein the 11 pin of the multivibrator U2 is connected with a twelfth resistor R3, the other end of the twelfth resistor R3 is connected with the same-direction input end of the second operational amplifier U1, and the reverse input end of the second operational amplifier U1 is connected with the output end; a collector of the fifth triode Q5, a collector of the sixth triode Q6, a collector of the seventh triode Q7 and a collector of the eighth triode Q8 are all connected in parallel and are also connected with a third end of a primary coil of the second transformer T1, an emitter of the fifth triode Q5 is connected with a base of the sixth triode Q6, an emitter of the sixth triode Q6 is connected with a base of the seventh triode Q7 and a base of the eighth triode Q8 respectively, and an emitter of the seventh triode Q7 and an emitter of the eighth triode Q8 are all grounded;
a second end of the primary coil of the second transformer T1 is grounded, and a first end and a second end of the secondary coil of the second transformer T1 are connected with the live wire and the neutral wire of the power grid in a one-to-one mode; the operational amplifier and the triode are matched to amplify the current, so that the current carrying capacity is improved, the circuit is simple, and the cost is low; the 10 pins and 11 pins of the multivibrator U2 output pulse waves, thereby controlling the second transformer T1 to operate, and the second transformer T1 is used for boosting voltage.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (5)
1. A bidirectional inverter comprises an inversion unit, an energy storage charging unit and an inversion switching unit; the energy storage charging system is characterized in that the inversion switching unit controls the inversion unit and the energy storage charging unit to work, and the inversion switching unit controls the inversion unit or the energy storage charging unit to work independently;
the energy storage charging unit is used for rectifying and reducing the 220V alternating current on the power grid to charge the energy storage unit;
the inversion unit and the energy storage charging unit are connected with the power grid, the inversion unit is further connected with the energy storage unit, and the inversion switching unit is respectively connected with the inversion unit and the energy storage charging unit.
2. The bi-directional inverter of claim 1, wherein the energy storage unit is a battery;
the inversion switching unit is a two-way normally open and closed switch, a first public end of the two-way normally open and closed switch is connected with a live wire of the power grid, and a first normally closed end of the two-way normally open and closed switch is connected with the energy storage charging unit; and a second common end of the two-way normally open and normally closed switch is connected with the positive electrode of the storage battery, and a second normally open end is connected with the inverter unit.
3. The bi-directional inverter of claim 2, wherein the energy storage charging unit comprises: the power supply comprises a rectifier bridge, a power supply management chip, a first transformer, a photoelectric coupler and a field effect transistor;
the first input end of the rectifier bridge is connected with the first normally-closed end of the two-way normally-open normally-closed switch, and the second input end of the rectifier bridge is connected with the zero line of the power grid; the power supply management circuit comprises a rectifier bridge, a first resistor, a second resistor and a first capacitor, wherein the positive electrode output end of the rectifier bridge is connected with the first resistor, the second resistor and the first capacitor, the other end of the first resistor is connected with the VCC end of the power supply management chip, the other end of the second resistor is connected with the other end of the first capacitor and is also connected with the negative electrode of a first diode, the positive electrode of the first diode is connected with the second end of a first primary coil of a first transformer, and the first end of the first primary coil of the first transformer is connected with the positive electrode output end of the rectifier bridge;
the OUT end of the power management chip is connected with a third resistor, the other end of the third resistor is connected with the grid electrode of the field effect transistor and is also connected with a fourth resistor, and the other end of the fourth resistor is connected with the negative electrode output end of the rectifier bridge; the drain electrode of the field effect transistor is connected with the second end of the first primary coil of the first transformer, the source electrode of the field effect transistor is connected with a fifth resistor and a sixth resistor, the other end of the fifth resistor is connected with the negative electrode output end of the rectifier bridge, and the other end of the sixth resistor is connected with the SENSE end of the power management chip;
the first end of the second primary coil of the first transformer is connected with the anode of a second diode, the cathode of the second diode is connected with the other end of the first resistor, and the second end of the second primary coil of the first transformer is connected with the cathode output end of the rectifier bridge.
4. The bi-directional inverter of claim 3, wherein a first end of the secondary winding of the first transformer is connected to an anode of a third diode, a cathode of the third diode is connected to an anode of the battery, a cathode of the battery is grounded, and a second end of the secondary winding of the first transformer is also grounded;
the negative electrode of the second diode is also connected with a seventh resistor and an eighth resistor, the other end of the seventh resistor is connected with the positive electrode of the light-emitting diode of the photoelectric coupler, the other end of the eighth resistor is connected with a ninth resistor and a three-terminal voltage-regulator tube, and the other end of the ninth resistor is grounded; the other end of the eighth resistor is connected with a pin 1 of the three-terminal voltage regulator tube, and a pin 2 of the three-terminal voltage regulator tube is grounded and a pin 3 of the three-terminal voltage regulator tube is connected with the negative electrode of a light emitting diode of the photoelectric coupler;
and a collector of a backlight detector of the photoelectric coupler is connected with the time end of the power management chip, an emitter of the backlight detector is connected with a tenth resistor, and the other end of the tenth resistor is connected with the negative output end of the rectifier bridge.
5. The bi-directional inverter of claim 2, wherein the inverter circuit comprises: the multi-frequency oscillator comprises a multi-frequency oscillator, a first current amplifying circuit, a second current amplifying circuit and a second transformer;
the VDD end of the multi-frequency oscillator is connected with the second normally open end of the two-way normally open and normally closed switch, and the VSS end of the multi-frequency oscillator is grounded;
the first current amplifying circuit includes: the storage battery comprises a first operational amplifier, a first triode, a second triode, a third triode and a fourth triode, wherein pins 4 of the first operational amplifier are connected with the positive electrode of the storage battery, and pins 11 of the first operational amplifier are grounded; an eleventh resistor is connected to a pin 10 of the multivibrator, the other end of the eleventh resistor is connected to the same-direction input end of the first operational amplifier, and the reverse-direction input end of the first operational amplifier is connected to the output end; the collector of the first triode, the collector of the second triode, the collector of the third triode and the collector of the fourth triode are all connected in parallel and are also connected with the first end of the primary coil of the second transformer; the base electrode of the second triode is connected with the emitting electrode of the first triode, the emitting electrodes of the second triode and the third triode are respectively connected with the base electrode of the third triode and the base electrode of the fourth triode, and the emitting electrode of the third triode and the emitting electrode of the fourth triode are both grounded;
the second current amplifying circuit includes: the multi-frequency oscillator comprises a second operational amplifier, a fifth triode, a sixth triode, a seventh triode and an eighth triode, wherein a pin 11 of the multi-frequency oscillator is connected with a twelfth resistor in a linked mode, the other end of the twelfth resistor is connected with the same-direction input end of the second operational amplifier, and the reverse input end of the second operational amplifier is connected with the output end; a collector electrode of the fifth triode, a collector electrode of the sixth triode, a collector electrode of the seventh triode and a collector electrode of the eighth triode are all connected in parallel and are also connected with a third end of the primary coil of the second transformer, an emitter electrode of the fifth triode is connected with a base electrode of the sixth triode, an emitter electrode of the sixth triode is respectively connected with a base electrode of the seventh triode and a base electrode of the eighth triode, and an emitter electrode of the seventh triode and an emitter electrode of the eighth triode are all grounded;
and the second end of the primary coil of the second transformer is grounded, and the first end and the second end of the secondary coil of the second transformer are connected with the live wire and the zero wire of the power grid in a one-to-one manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221033881.3U CN217469464U (en) | 2022-04-29 | 2022-04-29 | Bidirectional inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221033881.3U CN217469464U (en) | 2022-04-29 | 2022-04-29 | Bidirectional inverter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780732A (en) * | 2023-06-06 | 2023-09-19 | 东莞市腾威动力新能源有限公司 | Multifunctional charging system and method for energy storage battery |
| CN116780732B (en) * | 2023-06-06 | 2024-04-19 | 东莞市腾威动力新能源有限公司 | Multifunctional charging system and method for energy storage battery |
-
2022
- 2022-04-29 CN CN202221033881.3U patent/CN217469464U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780732A (en) * | 2023-06-06 | 2023-09-19 | 东莞市腾威动力新能源有限公司 | Multifunctional charging system and method for energy storage battery |
| CN116780732B (en) * | 2023-06-06 | 2024-04-19 | 东莞市腾威动力新能源有限公司 | Multifunctional charging system and method for energy storage battery |
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