Power supply system, energy storage conversion system and electronic equipment

Abstract

The embodiment of the invention provides a power supply system, an energy storage conversion system and electronic equipment, and the power supply system comprises a plurality of auxiliary power supplies which are respectively connected with a plurality of power supply systems and are used for receiving the electric energy provided by the plurality of power supply systems; one end of the control switch is connected with the auxiliary power supplies; and the power supply is connected with the other end of the control switch, and is used for receiving electric energy provided by one of the plurality of auxiliary power supplies under the condition that the control switch is closed, and providing electric energy for the controllers corresponding to the plurality of power supply systems. Therefore, one control switch can control the controllers corresponding to the plurality of power supply systems to provide electric energy, so that the plurality of controllers work normally, and compared with the prior art, the design of a single control switch is more concise, and a user can use the system more conveniently and simply.

Description

Technical Field

[0001] The present invention relates to the field of energy technology, and in particular to a power supply system, an energy storage conversion system and an electronic device. Background Art

[0002] At present, the market of photovoltaic energy storage system is getting hotter and hotter, and it is increasingly meeting people's electricity demand. The basic function of photovoltaic energy storage system is photovoltaic inverter and battery energy storage. Since photovoltaic energy storage system requires multiple auxiliary power sources to start the controller to make the photovoltaic energy storage system work, the control panel of photovoltaic energy storage system products in related technologies has multiple switches, which respectively control the switch of the whole machine, AC socket output, USB interface output, DC interface output, etc. The multi-switch design is not simple enough and it is cumbersome for users to use. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a power supply system, an energy storage conversion system and an electronic device that overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, an embodiment of the present invention discloses a power supply system, including:

[0005] A plurality of auxiliary power supplies, respectively connected to the plurality of power supply systems, for receiving electric energy provided by the plurality of power supply systems;

[0006] A control switch, one end of which is connected to the plurality of auxiliary power supplies;

[0007] A power supply is connected to the other end of the control switch, and is used to receive electric energy provided by one of the multiple auxiliary power supplies when the control switch is closed, and to provide electric energy to controllers corresponding to the multiple power supply systems.

[0008] Optionally, the power supply system further includes: M diodes; the number of the plurality of auxiliary power supplies is N;

[0009] Output ends of M auxiliary power supplies among the multiple auxiliary power supplies are connected to input ends of the M diodes respectively;

[0010] The output ends of the M diodes are respectively connected to the same end of the control switch.

[0011] Optionally, the power supply system further includes:

[0012] A primary voltage bus, through which the multiple auxiliary power supplies, the M diodes and the control switch are connected;

[0013] A secondary voltage bus, through which the output end of the power supply is respectively connected to the multiple power supply systems.

[0014] The embodiment of the present invention discloses an energy storage conversion system, comprising:

[0015] Multiple power supply systems;

[0016] A plurality of controllers respectively connected to the plurality of power supply systems;

[0017] A power supply system, the power supply system comprising:

[0018] A plurality of auxiliary power supplies, respectively connected to the plurality of power supply systems, and configured to receive electrical energy provided by the plurality of power supply systems;

[0019] A control switch, one end of which is connected to the plurality of auxiliary power supplies;

[0020] A power supply is connected to the other end of the control switch, and is used to receive electric energy provided by one of the multiple auxiliary power supplies when the control switch is closed, and to provide electric energy to controllers corresponding to the multiple power supply systems.

[0021] Optionally, the power supply system further includes: M diodes; the number of the plurality of auxiliary power supplies is N;

[0022] Output ends of M auxiliary power supplies among the multiple auxiliary power supplies are connected to input ends of the M diodes respectively;

[0023] The output ends of the M diodes are respectively connected to the same end of the control switch.

[0024] Optionally, the power supply system further includes:

[0025] A primary voltage bus, through which the multiple auxiliary power supplies, the M diodes and the control switch are connected;

[0026] A secondary voltage bus, through which the output end of the power supply is respectively connected to the multiple power supply systems.

[0027] Optionally, the M diodes include: a first diode and a second diode; the multiple auxiliary power supplies include: a first auxiliary power supply, a second auxiliary power supply and a third auxiliary power supply;

[0028] The output end of the first auxiliary power supply is connected to the input end of the first diode; the input end of the first auxiliary power supply is connected to one of the multiple power supply systems;

[0029] The output end of the second diode is connected to one end of the control switch;

[0030] The output end of the second auxiliary power supply is connected to one end of the control switch, and the input end of the second auxiliary power supply is connected to one of the multiple power supply systems;

[0031] The output end of the third auxiliary power supply is connected to the input end of the second diode; the input end of the third auxiliary power supply is connected to one of the multiple power supply systems;

[0032] An output end of the second diode is connected to one end of the control switch.

[0033] Optionally, the multiple power supply systems include:

[0034] An AC power grid power supply system, the AC power grid power supply system is connected to an input end of the first auxiliary power supply;

[0035] A photovoltaic power supply system, wherein the photovoltaic power supply system is connected to an input end of the second auxiliary power supply;

[0036] An energy storage battery power supply system, wherein the energy storage battery power supply system is connected to an input end of the third auxiliary power supply;

[0037] The AC power grid power supply system is used to provide electrical energy to the first auxiliary power supply;

[0038] The photovoltaic power supply system is used to provide electrical energy to the second auxiliary power supply;

[0039] The energy storage battery power supply system is used to provide power to the third auxiliary power supply;

[0040] When the control switch is closed and the photovoltaic module is in a power generation state, the photovoltaic power supply system provides electric energy to the second auxiliary power supply, so that the second auxiliary power supply provides electric energy to the power supply, and the controllers corresponding to the multiple power supply systems operate normally;

[0041] When the photovoltaic power supply system is not in a power generation state and the AC power grid power supply system is in a connected state, the AC power grid power supply system provides electric energy to the first auxiliary power supply, so that the first auxiliary power supply provides electric energy to the power supply, and the controllers corresponding to the multiple power supply systems work normally; the voltage output by the first auxiliary power supply is less than the voltage output by the second auxiliary power supply;

[0042] When the photovoltaic power supply system is not in a power generation state and the AC power grid power supply system is in a disconnected state, the energy storage battery power supply system provides electrical energy to the third auxiliary power supply, so that the third auxiliary power supply provides electrical energy to the power supply power supply, and the controllers corresponding to the multiple power supply systems operate normally; the voltage output by the third auxiliary power supply is less than the voltage output by the first auxiliary power supply.

[0043] Optionally, the multiple controllers include:

[0044] A bidirectional DC buck-boost controller, wherein the bidirectional DC buck-boost controller is connected to an output end of the power supply;

[0045] A solar controller connected to an output end of the power supply;

[0046] A battery management controller is connected to the output end of the power supply.

[0047] Optionally, the bidirectional DC buck-boost controller is respectively connected to the AC power grid, the first auxiliary power supply, the solar control module and the control battery management module through cables;

[0048] The solar controller is connected to the photovoltaic module and the control battery management module through cables respectively;

[0049] The battery management controller is connected to the energy storage battery via a cable.

[0050] Optionally, the first auxiliary power supply includes:

[0051] A rectifier bridge, the input end of which is connected to the AC power grid and is used to convert AC power into DC power;

[0052] A flyback circuit, wherein the input end of the flyback circuit is connected to the output end of the rectifier bridge, and the output end of the flyback circuit is connected to the input end of the first diode.

[0053] An embodiment of the present invention further discloses an electronic device, which includes the power supply system or energy storage conversion system as described above.

[0054] The embodiments of the present invention include the following advantages:

[0055] The embodiment of the present invention provides a power supply system, which includes: multiple auxiliary power supplies, which are respectively connected to multiple power supply systems and are used to receive electric energy provided by the multiple power supply systems; a control switch, one end of which is connected to the multiple auxiliary power supplies; a power supply, which is connected to the other end of the control switch and is used to receive electric energy provided by one of the multiple auxiliary power supplies when the control switch is closed, and provide electric energy to controllers corresponding to the multiple power supply systems. Thus, one control switch can be used to control the supply of electric energy to controllers corresponding to multiple power supply systems, so that multiple controllers can work normally. Compared with the prior art, the design of a single control switch of the present invention is more concise, and it is more convenient and simple for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a structural block diagram of a power supply system provided by an embodiment of the present invention;

[0057] Figure 2 is a structural block diagram of an energy storage conversion system provided by an embodiment of the present invention;

[0058] Figure 3 is a flow chart of steps for providing electric energy provided by an embodiment of the present invention;

[0059] Figure 4 It is a structural block diagram of a first auxiliary power supply provided by an embodiment of the present invention.

[0060] Description of reference numerals:

[0061] 01-power supply system, 02-power supply system, 03-controller, 04-rectifier bridge, 05-flyback circuit, 11-control switch, 12-auxiliary power supply, 13-power supply, 14-diode, 15-primary voltage bus, 16-secondary voltage bus, 121-first auxiliary power supply, 122-second auxiliary power supply, 123-third auxiliary power supply, 141-first diode, 142-second diode, 21-AC power grid power supply system, 22-photovoltaic power supply system, 23-energy storage battery power supply system, 31-bidirectional DC buck-boost controller, 32-solar controller, 33-battery management controller, 41-AC power grid, 42-third diode, 43-fourth diode, 44-fifth diode, 45-sixth diode, 46 first capacitor, 51 output end of the first auxiliary power supply, 52-seventh diode, 53-first N-type field effect transistor, 54-second N-type field effect transistor, 55-second capacitor, 56-third capacitor, 57-resistance, 58-transformer. DETAILED DESCRIPTION

[0062] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] In the related art, the control panel of the photovoltaic energy storage system product has multiple switches, and the design of multiple switches is not simple enough, and it is cumbersome for users to use. Based on this, one of the core concepts of the embodiment of the present invention is to provide a power supply system, which includes: multiple auxiliary power supplies, which are respectively connected to multiple power supply systems, and are used to receive electric energy provided by multiple power supply systems; a control switch, one end of which is connected to multiple auxiliary power supplies; a power supply connected to the other end of the control switch, which is used to receive the electric energy provided by one of the multiple auxiliary power supplies when the control switch is closed, and provide electric energy to the controllers corresponding to the multiple power supply systems. Therefore, one control switch can be used to control the supply of electric energy to the controllers corresponding to the multiple power supply systems, so that the multiple controllers can work normally. Compared with the prior art, the design of the single control switch of the present invention is simpler, and it is more convenient and simple for users to use.

[0064] Reference Figure 1 , shows a structural block diagram of a power supply system provided by an embodiment of the present invention, wherein the power supply system can specifically:

[0065] The multiple auxiliary power supplies 11 are respectively connected to the multiple power supply systems 02 and are used to receive electric energy provided by the multiple power supply systems 03.

[0066] In the embodiment of the present invention, the multiple auxiliary power supplies 12 can be connected to the multiple power supply systems 02 respectively, and the multiple power supply systems 02 can provide power to the multiple auxiliary power supplies 12 .

[0067] The control switch 1112 has one end connected to the plurality of auxiliary power sources 12 .

[0068] In the embodiment of the present invention, a plurality of auxiliary power sources 12 may be respectively connected to the same end of the control switch 11 .

[0069] The power supply 13 is connected to the other end of the control switch 11, and is used to receive power provided by one of the multiple auxiliary power supplies 12 when the control switch 11 is closed, and provide power to the controllers corresponding to the multiple power supply systems 02.

[0070] In an embodiment of the present invention, the power supply 13 can be connected to the other end of the control switch 11, and the power supply 13 is also connected to controllers corresponding to multiple power supply systems 02. When the control switch 11 is closed, the power supply 13 can receive electric energy provided by one of the multiple auxiliary power supplies 12, so that the power supply 13 can provide electric energy to the controllers corresponding to the multiple power supply systems 02, so that the power supply to the controllers corresponding to the multiple power supply systems 02 can be controlled through a single control switch 11, so that the multiple controllers 03 can work normally.

[0071] In an embodiment of the present invention, the power supply system 01 may further include: M diodes 14; the number of the multiple auxiliary power supplies 12 is N; the output ends of the M auxiliary power supplies among the multiple auxiliary power supplies 12 are respectively connected to the input ends of the M diodes 14; the output ends of the M diodes 14 are respectively connected to the same end of the control switch 11.

[0072] Specifically, the output ends of M auxiliary power supplies 12 among the multiple auxiliary power supplies 12 can be connected to the input ends of M diodes 14 respectively, that is, the output ends of M auxiliary power supplies among N auxiliary power supplies can be connected to the input ends of M diodes 14 respectively, where M is greater than N. The output ends of the M diodes 14 are respectively connected to the same end of the control switch 11.

[0073] In an embodiment of the present invention, the power supply system 01 also includes: a primary voltage bus 15, multiple auxiliary power supplies 12, M diodes 14 and a control switch 11, which are connected through the primary voltage bus 15; a secondary voltage bus 16, and the output end of the power supply 13 is respectively connected to multiple power supply systems 02 through the secondary voltage bus 16.

[0074] In the present invention, the primary voltage bus 15 can be a primary voltage bus 15 for supplying power to the auxiliary power supply. Multiple auxiliary power supplies 12, M diodes 14 and a control switch 11 can be connected through the primary voltage bus 15. The secondary voltage bus 16 can be a secondary voltage bus 16 for supplying power to the auxiliary power supply. The output end of the power supply 13 can be connected to multiple power supply systems 02 respectively through the secondary voltage bus 16.

[0075] In the embodiment of the present invention, multiple auxiliary power supplies are respectively connected to multiple power supply systems to receive power provided by multiple power supply systems; one end of the control switch is connected to multiple auxiliary power supplies; the power supply is connected to the other end of the control switch to receive power provided by one of the multiple auxiliary power supplies when the control switch is closed, and to provide power to controllers corresponding to the multiple power supply systems. Thus, one control switch can be used to control the supply of power to controllers corresponding to multiple power supply systems, so that multiple controllers can work normally. Compared with the prior art, the design of a single control switch of the present invention is more concise, and it is more convenient and simple for users to use.

[0076] like Figure 2 As shown, a structural block diagram of an energy storage conversion system provided by an embodiment of the present invention is shown. The energy storage conversion system may specifically include:

[0077] Multiple power supply systems 02;

[0078] In the embodiment of the present invention, a plurality of power supply systems 02 are used to provide electrical energy.

[0079] A plurality of controls are connected correspondingly to the plurality of power supply systems 02 .

[0080] The power supply system 01 includes:

[0081] A plurality of auxiliary power supplies 12, respectively connected to the plurality of power supply systems 02, for receiving electric energy provided by the plurality of power supply systems 02;

[0082] A control switch 11, one end of which is connected to the plurality of auxiliary power supplies 12;

[0083] The power supply 13 is connected to the other end of the control switch 11, and is used to receive power provided by one of the multiple auxiliary power supplies 12 when the control switch 11 is closed, and provide power to the controllers corresponding to the multiple power supply systems 02.

[0084] It should be noted that the power supply system 01 here is the same as the power supply system 01 introduced in the above embodiment, and will not be repeated here.

[0085] In an embodiment of the present invention, the power supply system 01 also includes: M diodes 14; the number of the multiple auxiliary power supplies 12 is N; the output ends of M auxiliary power supplies 12 among the multiple auxiliary power supplies 12 are respectively connected to the input ends of the M diodes 14; the output ends of the M diodes 14 are respectively connected to the same end of the control switch 11.

[0086] Specifically, the output ends of M auxiliary power supplies among the plurality of auxiliary power supplies 12 can be connected to the input ends of M diodes 14, that is, the output ends of M auxiliary power supplies among the N auxiliary power supplies can be connected to the input ends of M diodes 14, respectively, where N is greater than M. The output ends of the M diodes 14 are respectively connected to the same end of the control switch 11.

[0087] In an embodiment of the present invention, the power supply system 01 also includes: a primary voltage bus 15, multiple auxiliary power supplies 12, M diodes 14 and a control switch 11, which are connected through the primary voltage bus 15; a secondary voltage bus 16, and the output end of the power supply 13 is respectively connected to multiple power supply systems 02 through the secondary voltage bus 16.

[0088] In the present invention, the primary voltage bus 15 can be a primary voltage bus 15 for supplying power to the auxiliary power supply. Multiple auxiliary power supplies 12, M diodes 14 and a control switch 11 can be connected through the primary voltage bus 15. The secondary voltage bus 16 can be a secondary voltage bus 16 for supplying power to the auxiliary power supply. The output end of the power supply 13 can be connected to multiple power supply systems 02 respectively through the secondary voltage bus 16.

[0089] In the present invention, the auxiliary power supply primary voltage bus 15 refers to the initial bus system that provides power for auxiliary equipment in the power system. It is usually directly connected to the main power supply or the backup power supply, and converts the power into a voltage and current suitable for auxiliary equipment through isolation transformers, rectifiers, filters and other equipment. Main functions: Power supply stability: Ensure that auxiliary equipment can obtain a stable power supply under various working conditions. Reliability: Provide a high-reliability power supply, usually equipped with a backup power supply to ensure that the auxiliary equipment can still work normally when the main power supply fails. Isolation and protection: Ensure that the auxiliary power supply is isolated from the main power supply system 01 through an isolation transformer or other isolation equipment to prevent interference and fault spread.

[0090] The auxiliary power supply secondary voltage bus 16 refers to the bus system that provides power for specific auxiliary equipment or subsystems after the primary voltage bus 15. It usually obtains power from the primary voltage bus 15, and provides the required power for specific auxiliary equipment through further voltage stabilization, filtering and distribution. Main functions: Power distribution: distribute the power provided by the primary voltage bus 15 to various auxiliary equipment or subsystems. Further voltage stabilization and filtering: through the voltage stabilizer and filter, the power supply is further stabilized and purified to ensure that the auxiliary equipment obtains high-quality power supply. Protection and isolation: provide further protection functions, such as short-circuit protection, overload protection, etc., to ensure the safe operation of auxiliary equipment.

[0091] In an embodiment of the present invention, M diodes 14 include: a first diode 141 and a second diode 142; the multiple auxiliary power supplies 12 include: a first auxiliary power supply 121, a second auxiliary power supply 122 and a third auxiliary power supply 123; the output end of the first auxiliary power supply 121 is connected to the input end of the first diode 141; the input end of the first auxiliary power supply 121 is connected to one of the multiple power supply systems 02; the output end of the second diode 142 is connected to one end of the control switch 11; the output end of the second auxiliary power supply 122 is connected to one end of the control switch 11, and the input end of the second auxiliary power supply 122 is connected to one of the multiple power supply systems 02; the output end of the third auxiliary power supply 123 is connected to the input end of the second diode 142; the input end of the third auxiliary power supply 123 is connected to one of the multiple power supply systems 02; the output end of the second diode 142 is connected to one end of the control switch 11.

[0092] In an embodiment of the present invention, multiple power supply systems 02 include: an AC power grid power supply system 21, which is connected to the input end of the first auxiliary power supply 121; a photovoltaic power supply system 22, which is connected to the input end of the second auxiliary power supply 122; an energy storage battery power supply system 23, which is connected to the input end of the third auxiliary power supply 123; the AC power grid power supply system 21 is used to provide electric energy to the first auxiliary power supply 121; the photovoltaic power supply system 22 is used to provide electric energy to the second auxiliary power supply 122; the energy storage battery power supply system 23 is used to provide electric energy to the third auxiliary power supply 123; when the control switch 11 is closed and the photovoltaic module is in a power generation state, the photovoltaic power supply system 22 provides electric energy to the second auxiliary power supply 122, so that the second auxiliary power supply 122 provides electric energy to the power supply 13, and multiple The controllers corresponding to the power supply systems 02 operate normally; when the photovoltaic power supply system 22 is not in the power generation state and the AC power grid power supply system 21 is in the connected state, the AC power grid power supply system 21 provides electric energy to the first auxiliary power supply 121, so that the first auxiliary power supply 121 provides electric energy to the power supply 13, and the controllers corresponding to the multiple power supply systems 02 operate normally; the voltage output by the first auxiliary power supply 121 is lower than the voltage output by the second auxiliary power supply 122; when the photovoltaic power supply system 22 is not in the power generation state and the AC power grid power supply system 21 is in the disconnected state, the energy storage battery provides electric energy to the third auxiliary power supply 123, so that the third auxiliary power supply 123 provides electric energy to the power supply 13, and the controllers corresponding to the multiple power supply systems 02 operate normally; the voltage output by the third auxiliary power supply 123 is lower than the voltage output by the first auxiliary power supply 121.

[0093] In the present invention, the AC power grid power supply system 21 may be an AC power grid, the photovoltaic power supply system 22 may be a photovoltaic module, and the energy storage battery power supply system 23 may be an energy storage battery.

[0094] like Figure 3 As shown, a flow chart of the steps of providing electric energy provided by an embodiment of the present invention is shown.

[0095] When the control switch 11 is pressed and the control switch 11 is closed, the photovoltaic power supply system 22 can provide electric energy to the second auxiliary power supply 122. When the second auxiliary power supply 122 has electric energy, the second auxiliary power supply 122 can provide electric energy to the power supply 13. The power supply 13 provides electric energy to the controllers corresponding to the multiple power supply systems 02, so that the energy storage conversion system can work normally. When the photovoltaic power supply system 22 does not provide electric energy to the second auxiliary power supply 122, and the second auxiliary power supply 122 has no electric energy, the AC power grid power supply system 21 is in a connected state, and the AC power grid power supply system 21 can provide electric energy to the first auxiliary power supply 121. When the first auxiliary power supply 121 has electric energy, the first auxiliary power supply 121 can provide electric energy to the power supply 13. The power supply 13 provides electric energy to the controllers corresponding to the multiple power supply systems 02, so that the energy storage conversion system can work normally. When the photovoltaic power supply system 22 is not in the power generation state, the second auxiliary power supply 122 has no power, the AC power grid power supply system 21 is not connected, and the first auxiliary power supply 121 has no power, the energy storage battery power supply system 23 can provide power to the third auxiliary power supply 123. When the third auxiliary power supply 123 has power, the third auxiliary power supply 123 can provide power to the power supply 13. The power supply 13 provides power to the controllers corresponding to the multiple power supply systems 02 to enable the energy storage conversion system to operate normally. When the photovoltaic power supply system 22 is not in the power generation state, the second auxiliary power supply 122 has no power, the AC power grid power supply system 21 is not connected, the first auxiliary power supply 121 has no power, the energy storage battery power supply system 23 does not provide power to the third auxiliary power supply 123, and when the third auxiliary power supply 123 has no power, the energy storage conversion system stops working and the power supply 13 waits for power on.

[0096] In the present invention, the voltage output by the first auxiliary power supply 121 is lower than the voltage output by the second auxiliary power supply 122, and the voltage output by the third auxiliary power supply 123 is lower than the voltage output by the first auxiliary power supply 121. When the first auxiliary power supply 121 and the second auxiliary power supply 122 provide electric energy at the same time, the unidirectional conduction principle of the first diode 141 can be used to prevent the first auxiliary power supply 121 from outputting current, and the first auxiliary power supply 121 will not provide electric energy to the power supply 13. When the first auxiliary power supply 121 and the third auxiliary power supply 123 provide electric energy at the same time, the unidirectional conduction principle of the second diode 142 can be used to prevent the third auxiliary power supply 123 from outputting current, and the third auxiliary power supply 123 will not provide current to the power supply 13.

[0097] In an embodiment of the present invention, multiple controllers 03 include: a bidirectional DC buck-boost controller 31, which is connected to the output end of the power supply 13; a solar controller 32, which is connected to the output end of the power supply 13; and a battery management controller 33, which is connected to the output end of the power supply 13.

[0098] In the present invention, the bidirectional DC buck-boost controller 31 can be a bidirectional AC / DC buck-boost module, the solar controller 32 can be an MPPT (Maximum Power Point Tracking) module, and the battery management controller 33 can be a BMS (Battery Management System) module.

[0099] In the present invention, the bidirectional AC / DC buck-boost module is a power electronic device that can perform bidirectional energy conversion between AC and DC power supplies. It can perform buck-boost conversion between different voltage levels and can transfer energy in both directions. It is suitable for a variety of application scenarios, such as renewable energy systems, electric vehicle charging stations, energy storage systems, etc.

[0100] The MPPT module is a key technology used in solar photovoltaic systems. Its main purpose is to maximize the efficiency of solar energy utilization by adjusting the working point of the photovoltaic panel in real time so that it always works at the maximum power point.

[0101] The BMS module is a key system for monitoring, controlling and protecting the battery pack. The main function of the BMS module is to ensure the safe, efficient and reliable operation of the battery pack, extend the battery life and optimize the battery performance.

[0102] In an embodiment of the present invention, the bidirectional DC buck-boost controller 31 is respectively connected to the AC power grid, the first auxiliary power supply 121, the solar control module and the control battery management module through cables; the solar controller 32 is respectively connected to the photovoltaic module and the control battery management module through cables; the battery management controller 33 is connected to the energy storage battery through cables.

[0103] In an embodiment of the present invention, the first auxiliary power supply 121 may include: a rectifier bridge 04, the input end of the rectifier bridge 04 is connected to the AC power grid, and is used to convert AC power into DC power; a flyback circuit 05, the input end of the flyback circuit 05 is connected to the output end of the rectifier bridge 04, and the output end of the flyback circuit 05 is connected to the input end of the first diode 141.

[0104] In the present invention, the flyback circuit 05 may be a QR (Quasi-Resonant Flyback Converter) flyback circuit 05 .

[0105] like Figure 4 As shown, a structural block diagram of a first auxiliary power supply provided by an embodiment of the present invention is shown. The first auxiliary power supply 121 may specifically include:

[0106] AC power grid 41, output end 51 of first auxiliary power supply, third diode 42, fourth diode 43, fifth diode 44, sixth diode 45, seventh diode 52, first N-type field effect transistor 53, second N-type field effect transistor 54, first capacitor 46, second capacitor 55, third capacitor 56, resistor 57 and transformer 58. In the present invention, the AC power grid 41 can be the AC power grid 41 power supply system 21, the output end 51 of the first auxiliary power supply, the output end is connected to the primary bus, when the AC power grid 41 is connected, the AC of the AC power grid 41 can be rectified by the third diode 42, the fourth diode 43, the fifth diode 44 and the sixth diode 45, and then filtered by the first capacitor 46 into a DC pulse voltage. When the first switch tube is turned on, the voltage across the first capacitor 46 flows to the transformer 58, and no current flows through the inductor on the right side of the transformer 58, i.e., the secondary winding. The auxiliary power supply DC output demand is provided by the third capacitor 56 energy storage capacitor; when the first switch tube is turned off, the current direction in the primary winding of the transformer 58 will suddenly change, and then the polarity of the winding will be reversed. At this time, the second switch tube is controlled to be turned on, and the energy stored in the primary winding of the transformer 58 will be transmitted to the secondary winding of the transformer 58 and charge the third capacitor 56. The third capacitor 56 also supplies power to the load on the first bus.

[0107] In the embodiment of the present invention, multiple auxiliary power supplies are respectively connected to multiple power supply systems to receive power provided by multiple power supply systems; a control switch is connected to multiple auxiliary power supplies at one end; a power supply is connected to the other end of the control switch to receive power provided by one of the multiple auxiliary power supplies when the control switch is closed, and to provide power to controllers corresponding to multiple power supply systems. Thus, one control switch can be used to control the supply of power to controllers corresponding to multiple power supply systems, so that multiple controllers can work normally. Compared with the prior art, the design of a single control switch of the present invention is more concise, and it is more convenient and simple for users to use.

[0108] An embodiment of the present invention further discloses an electronic device, which includes the power supply system or energy storage conversion system provided above.

[0109] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0110] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0111] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0112] The power supply system, the energy storage conversion system and the electronic device provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained by using specific examples in this article. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A power supply system, characterized in that: include: A plurality of auxiliary power supplies, respectively connected to the plurality of power supply systems, for receiving electric energy provided by the plurality of power supply systems; A control switch, one end of which is connected to the plurality of auxiliary power supplies; The power supply is connected to the other end of the control switch, and is used to receive electric energy provided by one of the multiple auxiliary power supplies when the control switch is closed, and provide electric energy to the controllers corresponding to the multiple power supply systems.

2. The power supply system according to claim 1, characterized in that: The power supply system further includes: M diodes; the number of the plurality of auxiliary power supplies is N; Output ends of M auxiliary power supplies among the multiple auxiliary power supplies are connected to input ends of the M diodes respectively; The output ends of the M diodes are respectively connected to the same end of the control switch.

3. The power supply system according to claim 2, characterized in that: The power supply system further comprises: A primary voltage bus, through which the multiple auxiliary power supplies, the M diodes and the control switch are connected; A secondary voltage bus, through which the output end of the power supply is respectively connected to the multiple power supply systems.

4. An energy storage conversion system, characterized in that: include: Multiple power supply systems; A plurality of controllers respectively connected to the plurality of power supply systems; A power supply system, the power supply system comprising: A plurality of auxiliary power supplies, respectively connected to the plurality of power supply systems, and configured to receive electrical energy provided by the plurality of power supply systems; A control switch, one end of which is connected to the plurality of auxiliary power supplies; The power supply is connected to the other end of the control switch, and is used to receive electric energy provided by one of the multiple auxiliary power supplies when the control switch is closed, and provide electric energy to the controllers corresponding to the multiple power supply systems.

5. The energy storage conversion system according to claim 4, characterized in that: The power supply system further includes: M diodes; the number of the plurality of auxiliary power supplies is N; Output ends of M auxiliary power supplies among the multiple auxiliary power supplies are connected to input ends of the M diodes respectively; The output ends of the M diodes are respectively connected to the same end of the control switch.

6. The energy storage conversion system according to claim 5, characterized in that: The power supply system further comprises: A primary voltage bus, through which the multiple auxiliary power supplies, the M diodes and the control switch are connected; A secondary voltage bus, through which the output end of the power supply is respectively connected to the multiple power supply systems.

7. The energy storage conversion system according to claim 5, characterized in that: The M diodes include: a first diode and a second diode; the multiple auxiliary power supplies include: a first auxiliary power supply, a second auxiliary power supply and a third auxiliary power supply; The output end of the first auxiliary power supply is connected to the input end of the first diode; the input end of the first auxiliary power supply is connected to one of the multiple power supply systems; The output end of the second diode is connected to one end of the control switch; The output end of the second auxiliary power supply is connected to one end of the control switch, and the input end of the second auxiliary power supply is connected to one of the multiple power supply systems; The output end of the third auxiliary power supply is connected to the input end of the second diode; the input end of the third auxiliary power supply is connected to one of the multiple power supply systems; An output end of the second diode is connected to one end of the control switch.

8. The energy storage conversion system according to claim 5, characterized in that: The multiple power supply systems include: an AC power grid power supply system, the AC power grid power supply system being connected to an input end of the first auxiliary power supply; A photovoltaic power supply system, wherein the photovoltaic power supply system is connected to an input end of the second auxiliary power supply; An energy storage battery power supply system, wherein the energy storage battery power supply system is connected to an input end of the third auxiliary power supply; The AC power grid power supply system is used to provide electrical energy to the first auxiliary power supply; The photovoltaic power supply system is used to provide electrical energy to the second auxiliary power supply; The energy storage battery power supply system is used to provide electrical energy to the third auxiliary power supply; When the control switch is closed and the photovoltaic module is in a power generation state, the photovoltaic power supply system provides electric energy to the second auxiliary power supply, so that the second auxiliary power supply provides electric energy to the power supply, and the controllers corresponding to the multiple power supply systems operate normally; When the photovoltaic power supply system is not in a power generation state and the AC power grid power supply system is in a connected state, the AC power grid power supply system provides electric energy to the first auxiliary power supply, so that the first auxiliary power supply provides electric energy to the power supply, and the controllers corresponding to the multiple power supply systems work normally; the voltage output by the first auxiliary power supply is less than the voltage output by the second auxiliary power supply; When the photovoltaic power supply system is not in a power generation state and the AC power grid power supply system is in a disconnected state, the energy storage battery power supply system provides electrical energy to the third auxiliary power supply, so that the third auxiliary power supply provides electrical energy to the power supply, and the controllers corresponding to the multiple power supply systems operate normally; the voltage output by the third auxiliary power supply is less than the voltage output by the first auxiliary power supply.

9. The energy storage conversion system according to claim 5, characterized in that: The multiple controllers include: A bidirectional DC buck-boost controller, wherein the bidirectional DC buck-boost controller is connected to an output end of the power supply; A solar controller connected to an output end of the power supply; A battery management controller is connected to the output end of the power supply.

10. The energy storage conversion system according to claim 9, characterized in that: The bidirectional DC buck-boost controller is respectively connected to the AC power grid, the first auxiliary power supply, the solar control module and the control battery management module through cables; The solar controller is connected to the photovoltaic module and the control battery management module through cables respectively; The battery management controller is connected to the energy storage battery via a cable.

11. The photovoltaic energy storage conversion system according to claim 8, characterized in that: The first auxiliary power supply comprises: A rectifier bridge, the input end of which is connected to the AC power grid and is used to convert AC power into DC power; A flyback circuit, wherein the input end of the flyback circuit is connected to the output end of the rectifier bridge, and the output end of the flyback circuit is connected to the input end of the first diode.

12. An electronic device, characterized in that: The electronic device includes a power supply system as claimed in claims 1-3, or an energy storage conversion system as claimed in claims 4-11.

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