CN221227153U - Power supply system - Google Patents
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- CN221227153U CN221227153U CN202322989029.4U CN202322989029U CN221227153U CN 221227153 U CN221227153 U CN 221227153U CN 202322989029 U CN202322989029 U CN 202322989029U CN 221227153 U CN221227153 U CN 221227153U
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- 238000004146 energy storage Methods 0.000 claims abstract description 141
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 73
- 238000010586 diagram Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000005669 field effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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Abstract
A power supply system. The power supply system includes: at least one power supply unit comprising: direct current power supply, tank circuit, energy storage device, discharge circuit and DC/AC conversion device, wherein: the input end of the energy storage circuit is coupled with the direct current power supply, the output end of the energy storage circuit is coupled with the energy storage device, and the energy storage circuit is suitable for storing direct current output by the direct current power supply to the energy storage device; the discharging circuit is characterized in that the input end of the discharging circuit is coupled with the energy storage device, the output end of the discharging circuit is coupled with the DC/AC conversion device, and the discharging circuit is suitable for discharging the energy storage device; the input end of the DC/AC conversion device is coupled with the discharging circuit, the output end of the DC/AC conversion device is coupled with the alternating current power grid, and the DC/AC conversion device is suitable for inverting the direct current electric signal output by the energy storage device to obtain an alternating current electric signal suitable for being input to the alternating current power grid and outputting the alternating current electric signal to the alternating current power grid. By adopting the scheme, the diversified power supply requirements of users can be met.
Description
Technical Field
The utility model relates to the technical field of power supply, in particular to a power supply system.
Background
A DC/AC conversion device is a power conversion device that inverts direct current to alternating current.
The DC/AC conversion device is widely used, and is used for photovoltaic power generation, wind power generation, fuel cell power generation and the like from a traditional motor drive, an uninterruptible power supply (Uninterruptible Power Supply, UPS) to the new energy field. The DC/AC conversion device can convert direct current output by the direct current power supply into alternating current which can be used by electric equipment.
When the existing DC/AC conversion device is used for supplying power to electric equipment, the direct current output by the direct current power supply is directly input to an alternating current power grid, and diversified power supply requirements are difficult to meet.
Disclosure of utility model
The utility model aims to solve the problems that: how to input the direct current output by the direct current power supply to the alternating current power grid so as to meet diversified power supply requirements.
To solve the above problems, an embodiment of the present utility model provides a power supply system including: at least one power supply unit comprising: direct current power supply, tank circuit, energy storage device, discharge circuit and DC/AC conversion device, wherein:
the input end of the energy storage circuit is coupled with the direct current power supply, the output end of the energy storage circuit is coupled with the energy storage device, and the energy storage circuit is suitable for storing direct current output by the direct current power supply to the energy storage device;
The discharging circuit is characterized in that the input end of the discharging circuit is coupled with the energy storage device, the output end of the discharging circuit is coupled with the DC/AC conversion device, and the discharging circuit is suitable for discharging the energy storage device;
The input end of the DC/AC conversion device is coupled with the discharging circuit, the output end of the DC/AC conversion device is coupled with the alternating current power grid, and the DC/AC conversion device is suitable for inverting the direct current electric signal output by the energy storage device to obtain an alternating current electric signal suitable for being input to the alternating current power grid and outputting the alternating current electric signal to the alternating current power grid.
Optionally, the tank circuit includes:
The first capacitor is connected with the direct current power supply in parallel;
The first end of the first energy storage inductor is connected with the first end of the first capacitor;
The first end of the first switch tube is connected with the second end of the first energy storage inductor, and the second end of the first switch tube is connected with the second end of the first capacitor;
The first end of the second switch tube is connected with the second end of the first energy storage inductor and the first end of the first switch tube, and the second end of the second switch tube is connected with the second capacitor;
And a second capacitor connected in parallel with the energy storage device.
Optionally, the discharging circuit includes:
The first end of the third switching tube is connected with the second end of the second switching tube;
The first end of the second energy storage inductor is connected with the second end of the third switch tube;
The first end of the fourth switching tube is connected with the second end of the third switching tube and the first end of the second energy storage inductor;
the first end of the third capacitor is connected with the second end of the second energy storage inductor, and the second end of the third capacitor is connected with the second end of the fourth switching tube; the third capacitor is connected with the DC/AC conversion device.
Optionally, the tank circuit includes:
The first capacitor is connected with the direct current power supply in parallel;
A first energy storage inductance; the first end of the first energy storage inductor is connected with the first end of the first capacitor;
a first switching tube; the first end of the first switch tube is connected with the second end of the first energy storage inductor, and the second end of the first switch tube is connected with the second end of the first capacitor;
A second switching tube; the first end of the second switching tube is connected with the second end of the first energy storage inductor and the first end of the first switching tube; the second end of the second switching tube is connected with the energy storage device.
Optionally, the discharging circuit includes:
The first end of the third switching tube is connected with the second end of the second switching tube;
The first end of the second energy storage inductor is connected with the second end of the third switch tube;
The first end of the fourth switching tube is connected with the second end of the third switching tube and the first end of the second energy storage inductor;
The first end of the third capacitor is connected with the second end of the second energy storage inductor, and the second end of the third capacitor is connected with the second end of the fourth switching tube; the third capacitor is connected with the DC/AC conversion device;
And a fourth capacitor connected in parallel with the energy storage device.
Optionally, the energy storage device includes: a rechargeable battery.
Optionally, the energy storage device further comprises: and a switching circuit connected with the rechargeable battery.
Optionally, the direct current power supply is a photovoltaic panel.
Optionally, the power supply system includes more than two power supply units connected in parallel between the two power supply units, and the more than two power supply units are coupled with the same energy storage device.
Optionally, the power supply system further includes: and the controller is suitable for controlling the operation of the energy storage circuit and the discharge circuit.
Compared with the prior art, the technical scheme of the embodiment of the utility model has the following advantages:
by applying the scheme of the utility model, the energy storage circuit and the discharge circuit are arranged, the energy storage circuit can store the direct current output by the direct current power supply to the energy storage device, and the discharge circuit can discharge the energy storage device, so that the energy storage device can store the direct current output by the direct current power supply according to the needs and discharge the direct current according to the needs, and the diversified power supply needs are better met.
Drawings
FIG. 1 is a schematic diagram of a power supply system according to an embodiment of the present utility model;
FIG. 2 is a schematic circuit diagram of a power supply system according to an embodiment of the present utility model;
FIG. 3 is a schematic circuit diagram of another power supply system according to an embodiment of the present utility model;
Fig. 4 is a schematic circuit diagram of another power supply system according to an embodiment of the present utility model.
Detailed Description
When the DC/AC conversion device is used for supplying power to electric equipment, the input end of the DC/AC conversion device is connected with a direct current power supply, and the output end of the DC/AC conversion device is connected with an alternating current power grid, so that direct current output by the direct current power supply is directly input to the alternating current power grid.
However, with the above-described scheme, it is difficult to satisfy diversified power supply demands of users.
In order to solve the problem, the utility model provides a power supply system, wherein an energy storage circuit and a discharge circuit are arranged in the power supply system, the energy storage circuit can store direct current output by a direct current power supply to an energy storage device, and the discharge circuit can discharge the energy storage device, so that the energy storage device can store the direct current output by the direct current power supply according to the need and discharge the direct current according to the need, and the diversified power supply needs are better met.
The foregoing objects, features and advantages of the utility model will be more readily apparent from the following detailed description of the embodiments of the utility model taken in conjunction with the accompanying drawings.
An embodiment of the present utility model provides a power supply system, where the power supply system includes at least one power supply unit, and referring to fig. 1, the power supply unit may include: a direct current power supply 11, an energy storage circuit 12, an energy storage device 13, a discharge circuit 14 and a DC/AC conversion device 15.
The input end of the energy storage circuit 12 is coupled with the direct current power supply 11, and the output end of the energy storage circuit is coupled with the energy storage device 13 and is suitable for storing direct current output by the direct current power supply 11 into the energy storage device 13;
the discharging circuit 14 has an input end coupled to the energy storage device 13 and an output end coupled to the DC/AC conversion device 15, and is adapted to discharge the energy storage device 12;
The input end of the DC/AC conversion device 15 is coupled to the discharging circuit 14, and the output end thereof is coupled to the AC power grid, and is adapted to invert the DC power signal output from the energy storage device 13, so as to obtain an AC power signal suitable for being input to the AC power grid, and output the AC power grid.
Through the energy storage circuit 12, the direct current output by the direct current power supply 11 can be stored in the energy storage device 13, and through the discharge circuit 14, the energy storage device 13 can be discharged, so that diversified power supply requirements can be better met.
It should be noted that "coupled" as described in embodiments of the utility model refers to a direct or indirect connection. For example, a may be directly connected to B, or indirectly connected to B through one or more other electrical components, for example, a may be directly connected to C, and C may be directly connected to B, so that a coupling between a and B is achieved through C.
In implementation, the DC power source 11 may be an energy storage battery (such as a nickel-cadmium battery, a nickel-hydrogen battery, a lithium ion battery, a lithium polymer battery, etc.), a photovoltaic panel, or some converter (such as an AC/DC converter or a DC/DC converter), which is not limited herein, as long as DC power can be provided.
In a specific implementation, the tank circuit 12 may have various circuit structures, which are not limited herein, so long as the dc power output by the dc power source 11 can be stored in the energy storage device 13.
In one embodiment, referring to fig. 2, the tank circuit 12 may include:
a first capacitor C1 connected in parallel with the dc power supply 11;
the first end of the first energy storage inductor L1 is connected with the first end of the first capacitor C1;
The first end of the first switching tube M1 is connected with the second end of the first energy storage inductor L1, and the second end of the first switching tube L1 is connected with the second end of the first capacitor C1;
The first end of the second switching tube M2 is connected with the second end of the first energy storage inductor L1 and the first end of the first switching tube M1, and the second end of the second switching tube M2 is connected with the second capacitor C2;
And a second capacitor C2, the second capacitor C2 being connected in parallel with the energy storage device 13.
In a specific implementation, the first capacitor C1 may filter the dc signal output by the dc power supply 11 to filter the ripple current. The ripple current refers to a high-frequency part of the dc electrical signal output from the dc power supply 11. The ripple current can bring about the change of current or voltage amplitude, can lead to other devices to take place to break down, so adopt first electric capacity C1 filtering ripple current, can improve power supply system's reliability.
In a specific implementation, when the first switching tube M1 is turned on and the second switching tube M2 is turned off, the first energy storage inductor L1 is charged by the dc signal filtered by the first capacitor C1, and the dc power output by the dc power supply 11 is stored by the first energy storage inductor L1.
When the first switch tube M1 is turned off and the second switch tube M2 is turned on, the first energy storage inductor L1 already stores dc power, so the dc electrical signal output by the dc power supply 11 can be output to the second capacitor C2 and the energy storage device 13 through the first energy storage inductor L1, so that the second capacitor C2 and the energy storage device 13 can be charged. In addition, the second capacitor C2 is connected in parallel to two ends of the energy storage device 13, and can also filter the dc signal output by the dc power supply 11 to filter the ripple current.
In a specific implementation, the output of the tank circuit 12 is more stable by controlling the switching frequency of the first switching tube M1 and the second switching tube M2. The magnitude of the electric energy stored in the energy storage device 13 can be adjusted by controlling the switching time periods of the first switching tube M1 and the second switching tube M2.
In a specific implementation, the first switching Transistor M1 and the second switching Transistor M2 may be metal oxide semiconductor field effect transistors (Metal Oxide Semiconductor FIELD EFFECT transistors, MOSFETs) or other semiconductor devices such as insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBTs). When the first switching tube M1 and the second switching tube M2 are MOSFETs, they may be NMOS tubes or PMOS tubes. A diode is formed between the source and drain of each MOSFET, which is the body diode of the MOSFET in which it is located.
Taking the first switching tube M1 and the second switching tube M2 as NMOS tubes as an example, in a specific implementation, referring to fig. 2, a drain of the first switching tube M1 is connected to a first end of the first energy storage inductor L1 and a source of the second switching tube M2, and a drain of the second switching tube M2 is connected to the second capacitor.
In another embodiment, the tank circuit 12 may include:
a first capacitor C1 connected in parallel with the dc power supply 11;
A first energy storage inductance L1; the first end of the first energy storage inductor L1 is connected with the first end of the first capacitor C1;
A first switching tube M1; the first end of the first switching tube M1 is connected with the second end of the first energy storage inductor L1, and the second end of the first switching tube M1 is connected with the second end of the first capacitor C1;
a second switching tube M2; the first end of the second switching tube M2 is connected with the second end of the first energy storage inductor L1 and the first end of the first switching tube M1; the second end of the second switching tube M2 is connected to the energy storage device 13.
At this time, the energy storage circuit 12 includes only the first capacitor C1, the first energy storage inductor L1, the first switching tube M1 and the second switching tube M2, and does not include the second capacitor C2. That is, the second capacitor C2 may not be provided to filter the dc signal output from the dc power supply 11.
In an implementation, the energy storage device 13 described with reference to fig. 2 may include a rechargeable battery V1, and may be other rechargeable devices, which are not limited herein.
In some embodiments, referring to fig. 2, the energy storage device 13 may include a switching circuit S1 connected with the rechargeable battery V1. By controlling the on-off of the switching circuit S1, it is possible to control whether the charging process of the rechargeable battery V1 is stopped.
Specifically, the switching circuit S1 may be a switching device, which may be a MOSFET, an IGBT, or the like. When the switching circuit is closed, the output of the tank circuit 12 may be input to the rechargeable battery V1, otherwise, the output of the tank circuit 12 cannot be input to the rechargeable battery V1.
In practice, the discharge circuit 14 may have a variety of configurations, and is not limited herein.
In one embodiment of the present utility model, the discharging circuit 14 may include:
The first end of the third switching tube M3 is connected with the second end of the second switching tube M2;
the first end of the second energy storage inductor L2 is connected with the second end of the third switching tube M3;
The first end of the fourth switching tube M4 is connected with the second end of the third switching tube M3 and the first end of the second energy storage inductor L2;
The first end of the third capacitor C3 is connected with the second end of the second energy storage inductor L2, and the second end of the third capacitor C3 is connected with the second end of the fourth switching tube M4; the third capacitor C3 is connected to the DC/AC conversion means 15.
In a specific implementation, when the third switching tube M3 is turned on and the fourth switching tube M4 is turned off, the energy storage device 13 supplies power to the ac power grid, and at the same time, the energy storage device 13 charges the second energy storage inductor L2 and the third capacitor C3. The second energy storage inductor L2 and the third capacitor C3 form a filter circuit, which can filter the dc signal output by the energy storage device 13, and filter the ripple current, so as to improve the reliability of the power supply system.
When the third switching tube M3 is disconnected and the fourth switching tube M3 is conducted, the second energy storage inductor L2 and the third capacitor C3 supply power for the alternating current power grid.
In a specific implementation, the switching frequency of the third switching tube M3 and the fourth switching tube M4 is controlled, so that the input of the ac power grid is more stable. The input power of the alternating current power grid can be adjusted by controlling the switching time length of the third switching tube M3 and the fourth switching tube M4.
In a specific implementation, the third switching tube M3 and the fourth switching tube M4 may be MOSFETs or other semiconductor devices of IGBTs. When the third switching tube M3 and the fourth switching tube M4 are MOSFETs, they may be NMOS tubes or PMOS tubes. A diode is formed between the source and drain of each MOSFET, which is the body diode of the MOSFET in which it is located.
Taking the third switching tube M3 and the fourth switching tube M4 as NMOS tubes as an example, in a specific implementation, referring to fig. 2, a drain electrode of the third switching tube M3 is connected to a second end of the second switching tube M2, a source electrode of the third switching tube M3 is connected to a drain electrode of the fourth switching tube M4, and a source electrode of the fourth switching tube M4 is connected to a second end of the third capacitor C3.
In another embodiment, the discharge circuit 14 may include:
The first end of the third switching tube M3 is connected with the second end of the second switching tube M2;
the first end of the second energy storage inductor L2 is connected with the second end of the third switching tube M3;
The first end of the fourth switching tube M4 is connected with the second end of the third switching tube M3 and the first end of the second energy storage inductor L2;
the first end of the third capacitor C3 is connected with the second end of the second energy storage inductor L2, and the second end of the third capacitor C3 is connected with the second end of the fourth switching tube M4; the third capacitor C3 is connected to the DC/AC conversion device 15;
And a fourth capacitor C4, the fourth capacitor C4 being connected in parallel with the energy storage device 13.
At this time, the discharging circuit 14 adds a fourth capacitor C4, where the fourth capacitor C4 is connected in parallel to two ends of the energy storage device 13, so as to filter the dc signal output by the energy storage device 13, and filter the ripple current, thereby further improving the reliability of the power supply system.
In one embodiment, the tank circuit 12 includes a second capacitor C2. In this case, the fourth capacitor C4 may be included in the discharge circuit 14, or the fourth capacitor C4 may not be included.
In another embodiment, the discharge circuit 14 includes a fourth capacitor C4. In this case, the tank circuit 12 may or may not include the second capacitor C2.
In a specific implementation, the second end of the second energy storage inductor L2 may be connected to the positive input of the DC/AC conversion device 15, and the second end of the third capacitor C3 may be connected to the negative input of the DC/AC conversion device 15. The received direct current signal can be inverted by the DC/AC conversion device 15 to obtain a corresponding alternating current signal, and the corresponding alternating current signal is provided to an alternating current power grid. The specific configuration of the DC/AC conversion device 15 is not limited, as long as the DC signal can be inverted.
In a specific implementation, the power supply system may only include one power supply unit, where the energy storage device may only store the electric energy output by one dc power supply.
In some embodiments, the power supply system may include two or more power supply units. The two or more power supply units are connected in parallel, and are coupled with the same energy storage device.
For example, referring to fig. 3, the power supply system may include a first power supply unit 31 and a second power supply unit 32. The first power supply unit 31 is connected in parallel with the second power supply unit 32.
The second end of the second energy storage inductor in the first power supply unit 31 and the second end of the second energy storage inductor in the second power supply unit 32 are connected to the positive input end of the same DC/AC conversion device 34. The second end of the third capacitor in the first power supply unit 31 and the second end of the third capacitor in the second power supply unit 32 are connected to the negative input terminal of the same DC/AC converter 34.
The first power supply unit 31 and the second power supply unit 32 are connected to the same energy storage device 33, so that the energy storage device 33 can store the electric energy output by the dc power supply 311 in the first power supply unit 31 and the dc power supply 321 in the second power supply unit 32, and discharge the electric energy.
As another example, referring to fig. 4, the power supply system may include a first power supply unit 41, a second power supply unit 42, and a third power supply unit 43. The first power supply unit 41, the second power supply unit 42, and the third power supply unit 43 are connected in parallel.
The second end of the second energy storage inductor in the first power supply unit 41, the second end of the second energy storage inductor in the second power supply unit 42, and the second end of the second energy storage inductor L2 in the third power supply unit 43 are all connected to the positive input terminal of the same DC/AC converter 34.
The second end of the third capacitor in the first power supply unit 41, the second end of the third capacitor in the second power supply unit 42, and the second end of the third capacitor in the third power supply unit 43 are all connected to the negative input terminal of the same DC/AC converter 34.
The first power supply unit 41, the second power supply unit 42 and the third power supply unit 43 are connected to the same energy storage device 44, so that the energy storage device 44 can store and discharge the electric energy output by the dc power source 411 in the first power supply unit 41, the dc power source 421 in the second power supply unit 42 and the dc power source 431 in the third power supply unit 43.
In a specific implementation, the power supply system may further comprise a controller adapted to control the operation of the energy storage circuit and the discharge circuit. Specifically, referring to fig. 2, the controller is adapted to control the on/off of the first switching tube M1 and the second switching tube M2 in the tank circuit 12, and is also adapted to control the on/off of the third switching tube M3 and the fourth switching tube M4 in the discharge circuit 14.
In a specific implementation, when the power supply system comprises two or more power supply units, part or all of the power supply units can be controlled by the same controller, so that charge and discharge control in the power supply process is realized.
In some embodiments, the controller is further adapted to control switching of switching tubes in the DC/AC conversion device, thereby effecting inversion.
In particular implementations, the controller may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application Specific Integrated Circuit (ASIC), off-the-shelf programmable gate array (Field Programmable GATE ARRAY, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.
By adopting the scheme of the utility model, the direct current output by the direct current power supply can be stored according to the requirement and then discharged according to the requirement, so that the diversified power supply requirements can be better met.
Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.
Claims (10)
1. A power supply system, comprising: at least one power supply unit comprising: direct current power supply, tank circuit, energy storage device, discharge circuit and DC/AC conversion device, wherein: the input end of the energy storage circuit is coupled with the direct current power supply, the output end of the energy storage circuit is coupled with the energy storage device, and the energy storage circuit is suitable for storing direct current output by the direct current power supply to the energy storage device;
The discharging circuit is characterized in that the input end of the discharging circuit is coupled with the energy storage device, the output end of the discharging circuit is coupled with the DC/AC conversion device, and the discharging circuit is suitable for discharging the energy storage device;
The input end of the DC/AC conversion device is coupled with the discharging circuit, the output end of the DC/AC conversion device is coupled with the alternating current power grid, and the DC/AC conversion device is suitable for inverting the direct current electric signal output by the energy storage device to obtain an alternating current electric signal suitable for being input to the alternating current power grid and outputting the alternating current electric signal to the alternating current power grid.
2. The power supply system of claim 1, wherein the tank circuit comprises:
The first capacitor is connected with the direct current power supply in parallel;
The first end of the first energy storage inductor is connected with the first end of the first capacitor;
The first end of the first switch tube is connected with the second end of the first energy storage inductor, and the second end of the first switch tube is connected with the second end of the first capacitor;
The first end of the second switch tube is connected with the second end of the first energy storage inductor and the first end of the first switch tube, and the second end of the second switch tube is connected with the second capacitor;
And the second capacitor is connected with the energy storage device in parallel.
3. The power supply system of claim 2, wherein the discharge circuit comprises:
The first end of the third switching tube is connected with the second end of the second switching tube; the first end of the second energy storage inductor is connected with the second end of the third switch tube;
The first end of the fourth switching tube is connected with the second end of the third switching tube and the first end of the second energy storage inductor;
the first end of the third capacitor is connected with the second end of the second energy storage inductor, and the second end of the third capacitor is connected with the second end of the fourth switching tube; the third capacitor is connected with the DC/AC conversion device.
4. The power supply system of claim 1, wherein the tank circuit comprises:
The first capacitor is connected with the direct current power supply in parallel;
A first energy storage inductance; the first end of the first energy storage inductor is connected with the first end of the first capacitor; a first switching tube; the first end of the first switch tube is connected with the second end of the first energy storage inductor, and the second end of the first switch tube is connected with the second end of the first capacitor;
A second switching tube; the first end of the second switching tube is connected with the second end of the first energy storage inductor and the first end of the first switching tube; the second end of the second switching tube is connected with the energy storage device.
5. The power supply system of claim 2 or 4, wherein the discharge circuit comprises:
The first end of the third switching tube is connected with the second end of the second switching tube; the first end of the second energy storage inductor is connected with the second end of the third switch tube;
The first end of the fourth switching tube is connected with the second end of the third switching tube and the first end of the second energy storage inductor;
The first end of the third capacitor is connected with the second end of the second energy storage inductor, and the second end of the third capacitor is connected with the second end of the fourth switching tube; the third capacitor is connected with the DC/AC conversion device;
And a fourth capacitor connected in parallel with the energy storage device.
6. The power supply system of claim 1, wherein the energy storage device comprises: a rechargeable battery.
7. The power supply system of claim 6, wherein the energy storage device further comprises: and a switching circuit connected with the rechargeable battery.
8. The power supply system of claim 1, wherein the dc power source is a photovoltaic panel.
9. The power supply system of claim 1, comprising more than two power supply units connected in parallel between and coupled to the same energy storage device.
10. The power supply system of claim 1, further comprising: and the controller is suitable for controlling the operation of the energy storage circuit and the discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322989029.4U CN221227153U (en) | 2023-11-06 | 2023-11-06 | Power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322989029.4U CN221227153U (en) | 2023-11-06 | 2023-11-06 | Power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221227153U true CN221227153U (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322989029.4U Active CN221227153U (en) | 2023-11-06 | 2023-11-06 | Power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221227153U (en) |
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2023
- 2023-11-06 CN CN202322989029.4U patent/CN221227153U/en active Active
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