CN112187061A - Bidirectional inverter circuit and bidirectional inverter charging device - Google Patents
Bidirectional inverter circuit and bidirectional inverter charging device Download PDFInfo
- Publication number
- CN112187061A CN112187061A CN202011193179.9A CN202011193179A CN112187061A CN 112187061 A CN112187061 A CN 112187061A CN 202011193179 A CN202011193179 A CN 202011193179A CN 112187061 A CN112187061 A CN 112187061A
- Authority
- CN
- China
- Prior art keywords
- conversion unit
- direct
- current voltage
- inverter circuit
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H02M3/33584—Bidirectional converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a bidirectional inverter circuit and a bidirectional inverter charging device, wherein the bidirectional inverter circuit comprises: the transformer comprises a first conversion unit, a second conversion unit, a third conversion unit and a transformer; the input end of the first conversion unit is connected with a direct-current power supply, and the output end of the first conversion unit is connected with the low-voltage side of the transformer; the input end of the second conversion unit is connected with the high-voltage side of the transformer, and the output end of the second conversion unit is connected with the input end of the third conversion unit; when the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the second conversion unit and the third conversion unit sequentially chop, rectify and invert the direct-current voltage to convert the direct-current voltage into first alternating-current voltage for output; or when the output end of the third conversion unit is connected with the second alternating-current voltage, the third conversion unit, the second conversion unit and the first conversion unit sequentially perform primary rectification, chopping and secondary rectification on the second alternating-current voltage to convert the second alternating-current voltage into a second direct-current voltage, and the second direct-current voltage charges a direct-current power supply.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a bidirectional inverter circuit and a bidirectional inverter charging device.
Background
Most portable energy storage products supporting AC output in the market are charged and the AC output is respectively composed of an independent charger or a (built-in charging module) and an inverter, and the charging mode of the products adopts either a direct current charging mode but needs an independent charging adapter or an AC charging mode but needs a built-in charging module in the products.
In order to obtain a faster charging speed, such portable energy storage products often need to be configured with a larger external charging adapter, or further increase the power of an internal charging module, so that the cost and the difficulty of circuit design also increase, and in addition, the requirements of product volume and heat dissipation are increased.
In addition, a few portable energy storage products realize inversion/charging bidirectional control by utilizing the control of a DSP technology, the control mode of the products is complex, the verification period of a program algorithm is long, the research and development period of the products is long, and the cost is high.
Disclosure of Invention
The invention provides a bidirectional inverter circuit and a bidirectional inverter charging device, aiming at overcoming the defects in the prior art.
The invention solves the technical problems by the following technical means:
in a first aspect, the present invention provides a bidirectional inverter circuit, including: a first conversion unit, a second conversion unit, a third conversion unit and a transformer, wherein,
the input end of the first conversion unit is connected with a direct-current power supply, and the output end of the first conversion unit is connected with the low-voltage side of the transformer; the input end of the second conversion unit is connected with the high-voltage side of the transformer, and the output end of the second conversion unit is connected with the input end of the third conversion unit;
when the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the second conversion unit and the third conversion unit sequentially chop, rectify and invert the direct-current voltage to convert the direct-current voltage into first alternating-current voltage, and the first alternating-current voltage is output from the output end of the third conversion unit;
or when the output end of the third conversion unit is connected with a second alternating-current voltage, the third conversion unit, the second conversion unit and the first conversion unit sequentially perform first rectification, chopping and second rectification on the second alternating-current voltage to convert the second alternating-current voltage into a second direct-current voltage, and the second direct-current voltage charges the direct-current power supply.
Further, the first conversion unit is a full-bridge circuit formed by four MOS tubes, the second conversion unit is a full-bridge circuit formed by four MOS tubes, and the third conversion unit is an SPWM full-bridge inverter circuit formed by four MOS tubes.
Furthermore, the first conversion unit is a push-pull circuit formed by two MOS tubes, the second conversion unit is a full-bridge circuit formed by four MOS tubes, and the third conversion unit is an SPWM full-bridge inverter circuit formed by four MOS tubes.
Further, an energy storage inductor is connected in series with the input end of the first conversion unit.
Further, an oscillation suppression circuit is connected in parallel to the energy storage inductor, the oscillation suppression circuit comprises a first MOS transistor, a second MOS transistor, a first switch control circuit, a first capacitor, a second capacitor and a second switch control circuit, and the first MOS transistor and the second MOS transistor are both PMOS transistors; wherein
The source electrodes of the first MOS tube and the second MOS tube are connected in series and then connected with the energy storage inductor in parallel, and the grid electrode and the source electrode of the first MOS tube and the grid electrode and the source electrode of the second MOS tube are connected with the first switch control circuit;
after the first capacitor and the second capacitor are connected in parallel, one end of the first capacitor is connected with the drain electrode of the second MOS tube, and the other end of the first capacitor is grounded through the second switch control circuit;
when the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the first switch control circuit and the second switch control circuit are both conducted;
or when the output end of the third conversion unit is connected with the second alternating voltage, the first switch control circuit and the second switch control circuit are both turned off.
Further, the first switch control circuit comprises a first triode, and the grid electrode and the source electrode of the first MOS tube and the grid electrode and the source electrode of the second MOS tube are connected with the collector electrode of the first triode;
the base electrode of the first triode is connected with the first control signal input port, and the emitting electrode of the first triode is grounded.
Furthermore, a second triode is connected in parallel to the base of the first triode, the collector of the second triode is connected with the base of the first triode, the base of the second triode is connected with a second control signal input port, and the emitter of the second triode is grounded.
Further, the second switch control circuit comprises a third MOS transistor, a gate of the third MOS transistor is connected to the third control signal input port, and a source of the third MOS transistor is grounded.
Further, the third MOS transistor is an NMOS transistor.
In a second aspect, the present invention further provides a bidirectional inverter charging device, which includes a battery pack, a charging management circuit, a main control circuit, an auxiliary power supply circuit, a charging/discharging switching circuit, and the bidirectional inverter circuit according to the first aspect; the input end of the bidirectional inverter circuit is connected with the battery pack, and the output end of the bidirectional inverter circuit is connected with the charging and discharging switching circuit.
The invention has the beneficial effects that:
the invention adopts a pure hardware scheme, improves the unidirectional DC-AC inverter on the original energy storage product, and realizes that the original unidirectional inverter has the AC/DC function of charging the battery besides the DC/AC inversion in a pure hardware mode.
The bidirectional inverter circuit can realize the bidirectional inversion function, does not need an additional charging adapter, and can share one set of power device and magnetic device for inversion and charging, thereby saving the component cost and reducing the product volume. High-power charging is easy to realize, and theoretically, the maximum charging power can be equal to the inversion output power.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a circuit diagram of a full-bridge-SPWM full-bridge inverter architecture of a bidirectional inverter circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a push-pull full-bridge-SPWM full-bridge inverter architecture of a bidirectional inverter circuit according to an embodiment of the present invention;
fig. 3 is a circuit diagram of an oscillation suppression circuit of a bidirectional inverter circuit according to an embodiment of the present invention;
fig. 4 is an electrical schematic diagram of a bidirectional inverter charging device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
The invention provides a bidirectional inverter circuit, comprising: the transformer comprises a first conversion unit, a second conversion unit, a third conversion unit and a transformer; the input end of the first conversion unit is connected with a direct-current power supply, and the output end of the first conversion unit is connected with the low-voltage side of the transformer; the input end of the second conversion unit is connected with the high-voltage side of the transformer, and the output end of the second conversion unit is connected with the input end of the third conversion unit. When the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the second conversion unit and the third conversion unit sequentially chop, rectify and invert the direct-current voltage to convert the direct-current voltage into first alternating-current voltage, and the first alternating-current voltage is output from the output end of the third conversion unit; or when the output end of the third conversion unit is connected with a second alternating-current voltage, the third conversion unit, the second conversion unit and the first conversion unit sequentially perform first rectification, chopping and second rectification on the second alternating-current voltage to convert the second alternating-current voltage into a second direct-current voltage, and the second direct-current voltage charges the direct-current power supply.
Example 1
Specifically, as shown in fig. 1, in embodiment 1, the first conversion unit is a full-bridge circuit composed of four MOS transistors Q1, Q2, Q3, and Q4, the second conversion unit is a full-bridge circuit composed of four MOS transistors Q5, Q6, Q7, and Q8, and the third conversion unit is an SPWM full-bridge inverter circuit composed of four MOS transistors Q10, Q11, Q17, and Q18.
When a direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, namely when the bidirectional inverter circuit is in a DC/AC working process, the gates of the four MOS tubes Q1, Q2, Q3 and Q4 of the first conversion unit are externally connected with a control port, the input direct-current voltage is chopped, the secondary side of the transformer outputs expected high-frequency pulse voltage by matching with a proper transformer turn ratio, and then the expected high-frequency pulse voltage is rectified by a full-bridge rectifier circuit formed by body diodes of the four MOS tubes Q5, Q6, Q7 and Q8 of the second conversion unit, so that the direct-current high voltage is supplied to an SPWM inverter circuit formed by the four MOS tubes Q10, Q11, Q17 and Q18 of the third conversion unit at the rear stage for inversion, and therefore the conversion of the direct-current high voltage and the alternating-current output is completed.
When the output end of the third conversion unit is connected with the second alternating voltage, rectifying the input second alternating voltage by using a body diode of an MOS (metal oxide semiconductor) tube in the SPWM (sinusoidal pulse width modulation) full-bridge inverter circuit to obtain a high-voltage direct-current voltage; the gates of the Q5, the Q6, the Q7 and the Q8 are externally connected with a control port, a full bridge circuit formed by the control port chops high-voltage direct-current voltage, then the expected high-frequency low-voltage pulse voltage is obtained through a proper turn ratio, and after the high-frequency low-voltage pulse waveform is rectified by a full bridge rectification circuit formed by body diodes of the Q1, the Q2, the Q3 and the Q4, an energy storage inductor L1 and a filter capacitor C2, the high-frequency low-voltage pulse waveform is output to be suitable for charging of a battery.
Due to the three-stage charging characteristic of the lithium battery and the slow increase of the battery voltage in the charging process, the duty ratio of the full-bridge driving signal at the high-voltage side is not fixed in the AC/DC working mode, and the full-bridge driving signal needs to be adjusted according to the charging current and the charging voltage to ensure the complete charging process. Therefore, an energy storage inductor L1 is added to the circuit architecture. The introduction of the energy storage inductor L1 is equivalent to artificially adding a large leakage inductor during the DC/AC operation, and is easy to generate LC oscillation with the junction capacitance of the MOS transistor in the first conversion unit to generate a large voltage spike.
In order to solve the new problem caused by the introduction of the energy storage inductor L1, in the present embodiment, an oscillation suppression circuit is connected in parallel to the energy storage inductor. As shown in fig. 3, the oscillation suppression circuit includes a first MOS transistor Q28, a second MOS transistor Q29, a first switch control circuit, a first capacitor C7, a second capacitor C13, and a second switch control circuit. The first MOS transistor Q28 and the second MOS transistor Q29 are both PMOS transistors.
The sources of the first MOS transistor Q28 and the second MOS transistor Q29 are connected in series and then connected in parallel with the energy storage inductor L1, and the gate and the source of the first MOS transistor Q28 and the gate and the source of the second MOS transistor Q29 are connected to the first switch control circuit. After the first capacitor C7 and the second capacitor C13 are connected in parallel, one end of the first capacitor is connected with the drain of the second MOS transistor Q29, and the other end of the first capacitor is grounded through the second switch control circuit.
When the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the first switch control circuit and the second switch control circuit are both switched on, and at the moment, Q28 and Q29 are switched on, so that the energy storage inductor L1 is in short circuit; c7 and C13 correspond to input capacitances.
Or when the output end of the third conversion unit is connected with the second alternating voltage, the first switch control circuit and the second switch control circuit are both turned off, at this time, Q28 and Q29 are turned off, the energy storage inductor L1 works, and C7 and C13 do not participate in the work.
Specifically, the first switch control circuit includes a first transistor Q32, and the gate and the source of the first MOS transistor Q28 and the gate and the source of the second MOS transistor Q29 are both connected to the collector of the first transistor Q32; the base electrode of the first triode Q32 is connected with the first control signal input port, and the emitter electrode is grounded.
The base electrode of the first triode Q32 is connected with a second triode Q33 in parallel, the collector electrode of the second triode Q33 is connected with the base electrode of the first triode, the base electrode of the second triode Q33 is connected with a second control signal input port, and the emitting electrode of the second triode Q33 is grounded.
When the bidirectional inverter circuit is in a DC/AC working state, a high level is input into the first control signal input port, a low level is input into the second control signal input port, at the moment, the first triode Q32 is conducted, and the second triode Q33 is turned off. When the bidirectional inverter circuit is in an AC/DC working state, the first control signal input port inputs a low level, the second control signal input port inputs a high level, and at the moment, the second triode Q33 is conducted, so that the base electrode of the first triode Q32 is ensured to be in a low-potential state, and the first triode Q32 can be ensured to be turned off.
Specifically, the second switch control circuit includes a third MOS transistor Q34, a gate of the third MOS transistor Q34 is connected to the third control signal input port, and a source of the third MOS transistor Q34 is grounded. The third MOS transistor Q34 is an NMOS transistor.
Example 2
As shown in fig. 2, the present embodiment 2 provides another circuit structure of the bidirectional inverter circuit, and the only difference between the circuit structure of the present embodiment 2 and the circuit structure of the embodiment 1 is that in the present embodiment 2, the first conversion unit is a push-pull circuit composed of two MOS transistors Q9 and Q12.
Specifically referring to the circuit shown in fig. 2, when the bidirectional inverter circuit shown in fig. 2 is in a DC/AC operation process, Q9 and Q12 form a typical push-pull topology mode to chop an input DC voltage, and output a desired high-frequency pulse voltage on the secondary side of the transformer in cooperation with a proper transformer turn ratio, and then are rectified by a full-bridge rectifier circuit formed by body diodes of full-bridge power MOS Q13, Q14, Q15 and Q16, so that a SPWM full-bridge inverter circuit formed by Q19, Q20, Q21 and Q22 is obtained to convert a DC high voltage into an AC output.
When the bidirectional inverter circuit shown in fig. 2 is in an AC/DC working process, a body diode of a power tube in the SPWM full-bridge inverter circuit rectifies an AC input voltage to obtain a high-voltage DC voltage, the high-voltage DC voltage is output to a full-bridge circuit composed of Q13, Q14, Q15, and Q16 for chopping, a desired high-frequency low-voltage pulse voltage is obtained through a proper turn ratio, and a bridge rectifier circuit composed of body diodes of Q9 and Q12, an energy storage inductor L2, and a filter capacitor C4 rectifies the high-frequency low-voltage pulse waveform to output a charging voltage suitable for a battery.
Example 3
As shown in fig. 4, this embodiment 3 provides a bidirectional inverter charging device, which includes a battery pack, a charging management circuit, a main control circuit, an auxiliary power supply circuit, a charging/discharging switching circuit, and further includes the bidirectional inverter circuit provided in embodiment 1 or embodiment 2; the input end of the bidirectional inverter circuit is connected with the battery pack, and the output end of the bidirectional inverter circuit is connected with the charging and discharging switching circuit.
In summary, the invention adopts a pure hardware scheme, improves the unidirectional DC-AC inverter on the original energy storage product, and realizes that the original unidirectional inverter has the function of charging the battery by AC/DC in addition to the DC/AC inversion by a pure hardware mode.
The bidirectional inverter circuit can realize the bidirectional inversion function, does not need an additional charging adapter, and can share one set of power device and magnetic device for inversion and charging, thereby saving the component cost and reducing the product volume. High-power charging is easy to realize, and theoretically, the maximum charging power can be equal to the inversion output power.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A bidirectional inverter circuit, comprising: the transformer comprises a first conversion unit, a second conversion unit, a third conversion unit and a transformer; wherein the content of the first and second substances,
the input end of the first conversion unit is connected with a direct-current power supply, and the output end of the first conversion unit is connected with the low-voltage side of the transformer; the input end of the second conversion unit is connected with the high-voltage side of the transformer, and the output end of the second conversion unit is connected with the input end of the third conversion unit;
when the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the second conversion unit and the third conversion unit sequentially chop, rectify and invert the direct-current voltage to convert the direct-current voltage into first alternating-current voltage, and the first alternating-current voltage is output from the output end of the third conversion unit;
or when the output end of the third conversion unit is connected with a second alternating-current voltage, the third conversion unit, the second conversion unit and the first conversion unit sequentially perform first rectification, chopping and second rectification on the second alternating-current voltage to convert the second alternating-current voltage into a second direct-current voltage, and the second direct-current voltage charges the direct-current power supply.
2. The bidirectional inverter circuit according to claim 1, wherein: the first conversion unit is a full-bridge circuit formed by four MOS tubes, the second conversion unit is a full-bridge circuit formed by four MOS tubes, and the third conversion unit is an SPWM full-bridge inverter circuit formed by four MOS tubes.
3. The bidirectional inverter circuit according to claim 1, wherein: the first conversion unit is a push-pull circuit formed by two MOS tubes, the second conversion unit is a full-bridge circuit formed by four MOS tubes, and the third conversion unit is an SPWM full-bridge inverter circuit formed by four MOS tubes.
4. A bi-directional inverter circuit according to any one of claims 2 or 3, wherein: and the input end of the first conversion unit is connected with an energy storage inductor in series.
5. The bidirectional inverter circuit according to claim 4, wherein: the energy storage inductor is connected with an oscillation suppression circuit in parallel, the oscillation suppression circuit comprises a first MOS tube, a second MOS tube, a first switch control circuit, a first capacitor, a second capacitor and a second switch control circuit, and the first MOS tube and the second MOS tube are both PMOS tubes; wherein
The source electrodes of the first MOS tube and the second MOS tube are connected in series and then connected with the energy storage inductor in parallel, and the grid electrode and the source electrode of the first MOS tube and the grid electrode and the source electrode of the second MOS tube are connected with the first switch control circuit;
after the first capacitor and the second capacitor are connected in parallel, one end of the first capacitor is connected with the drain electrode of the second MOS tube, and the other end of the first capacitor is grounded through the second switch control circuit;
when the direct-current power supply inputs direct-current voltage to the input end of the first conversion unit, the first switch control circuit and the second switch control circuit are both conducted;
or when the output end of the third conversion unit is connected with the second alternating voltage, the first switch control circuit and the second switch control circuit are both turned off.
6. The bidirectional inverter circuit according to claim 5, wherein: the first switch control circuit comprises a first triode, and a grid electrode and a source electrode of the first MOS tube and a grid electrode and a source electrode of the second MOS tube are connected with a collector electrode of the first triode;
the base electrode of the first triode is connected with the first control signal input port, and the emitting electrode of the first triode is grounded.
7. The bidirectional inverter circuit according to claim 6, wherein: the base electrode of the first triode is connected with a second triode in parallel, the collector electrode of the second triode is connected with the base electrode of the first triode, the base electrode of the second triode is connected with a second control signal input port, and the emitting electrode of the second triode is grounded.
8. The bidirectional inverter circuit according to claim 4, wherein: the second switch control circuit comprises a third MOS tube, the grid electrode of the third MOS tube is connected with a third control signal input port, and the source electrode of the third MOS tube is grounded.
9. The bidirectional inverter circuit according to claim 8, wherein: the third MOS tube is an NMOS tube.
10. The utility model provides a two-way contravariant charging device, includes battery package, charge management circuit, master control circuit, supplementary power supply circuit, charge-discharge switching circuit, its characterized in that: further comprising the bi-directional inverter circuit of claim 4; the input end of the bidirectional inverter circuit is connected with the battery pack, and the output end of the bidirectional inverter circuit is connected with the charging and discharging switching circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011193179.9A CN112187061A (en) | 2020-10-30 | 2020-10-30 | Bidirectional inverter circuit and bidirectional inverter charging device |
| PCT/CN2020/128001 WO2022088256A1 (en) | 2020-10-30 | 2020-11-11 | Bidirectional inverter circuit and bidirectional inverter charging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011193179.9A CN112187061A (en) | 2020-10-30 | 2020-10-30 | Bidirectional inverter circuit and bidirectional inverter charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112187061A true CN112187061A (en) | 2021-01-05 |
Family
ID=73916783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011193179.9A Pending CN112187061A (en) | 2020-10-30 | 2020-10-30 | Bidirectional inverter circuit and bidirectional inverter charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112187061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400697A (en) * | 2021-12-01 | 2022-04-26 | 深圳市海和科技股份有限公司 | Two-way mobile power generation circuit and two-way mobile power generation terminal equipment |
-
2020
- 2020-10-30 CN CN202011193179.9A patent/CN112187061A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400697A (en) * | 2021-12-01 | 2022-04-26 | 深圳市海和科技股份有限公司 | Two-way mobile power generation circuit and two-way mobile power generation terminal equipment |
| CN114400697B (en) * | 2021-12-01 | 2022-11-18 | 深圳市海和科技股份有限公司 | Two-way mobile power generation circuit and two-way mobile power generation terminal equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11532978B2 (en) | Power conversion module, vehicle-mounted charger, and electric vehicle | |
| CN108512256B (en) | Multifunctional vehicle-mounted charge-discharge integrated system | |
| US10243455B2 (en) | Bidirectional DC-DC converter | |
| WO2022121890A1 (en) | Power supply system and solar photovoltaic inverter | |
| CN112187061A (en) | Bidirectional inverter circuit and bidirectional inverter charging device | |
| CN116984709B (en) | High-frequency inversion direct-current welding power supply circuit | |
| Burlaka et al. | Bidirectional single stage isolated DC-AC converter | |
| WO2022088256A1 (en) | Bidirectional inverter circuit and bidirectional inverter charging apparatus | |
| CN213342021U (en) | Bidirectional inverter circuit and bidirectional inverter charging device | |
| WO2019109950A1 (en) | Boosting circuit, power supply device and portable electric energy system | |
| Ramamurthi et al. | High step-up DC-DC converter with switched capacitor-coupled inductor and voltage multiplier module | |
| Soleimanifard et al. | A bidirectional buck-boost converter in cascade with a dual active bridge converter to increase the maximum input and output currents and extend zero voltage switching range | |
| CN212909346U (en) | Boost power conversion circuit | |
| Chen et al. | A novel soft-switching grid-connected PV inverter and its implementation | |
| CN108566112B (en) | A kind of three-level current transformer driving circuit with negative pressure bootstrapping | |
| Van der Broeck et al. | On the steady-state and dynamic characteristics of bipolar transistor power switches in low-loss technology | |
| CN213125831U (en) | High-efficient negative pressure elimination isolation half-bridge drive circuit | |
| Chiou et al. | Implementation of Phase Shift Ful1-Bridge Converter Using GaN FET for EV Charger | |
| CN116317036B (en) | Battery system and power supply device | |
| CN221177338U (en) | Charger system | |
| CN109861573A (en) | A kind of low switching losses power inverter | |
| CN219513800U (en) | Distributed energy storage polymerization controller | |
| CN220291888U (en) | Novel common-ground single-phase three-level three-time boosting inverter based on switch capacitor | |
| CN219145265U (en) | Isolation driving circuit, control device and energy storage equipment | |
| CN219304717U (en) | Inverter circuit with low input and low loss and energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |