Power supply controller and power supply control system
By designing a power controller and combining a photovoltaic energy storage system with three-phase mains electricity, the problems of unstable solar input and limited output power are solved, achieving stable power supply and diversified applications, including charging of home appliances and cars.
Patent Information
- Application Number
- CN202422607447.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In traditional balcony photovoltaic energy storage systems, solar energy input is unstable and the system output power is affected by battery capacity, which limits the application scenarios.
A power controller is designed, which includes a three-phase mains port, an AC charging pile port, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch. By controlling the state switching of the mains switch and inverter, the photovoltaic energy storage system is combined with the three-phase mains power, providing photovoltaic charging, mains charging, and vehicle charging functions, solving the problems of unstable solar input and limited output power.
It achieves stable power supply for the photovoltaic energy storage system, expands the application scenarios, and can automatically switch to three-phase mains power supply when solar energy is insufficient to meet high power demands, including charging of household appliances and cars, expanding the diversity of application scenarios.
Smart Images
Figure CN223391105U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photovoltaic technology, and in particular to a power supply controller and a power supply control system. Background Art
[0002] With the development of new energy, large and small energy storage systems are emerging one after another. Among them, the balcony photovoltaic energy storage system with solar energy as the main input source is very popular among users. How to give full play to the role of the energy storage system is also a concern of users.
[0003] Current balcony photovoltaic energy storage systems utilize photovoltaic panels to convert solar energy into electrical energy, which is stored in energy storage batteries. An inverter then converts the battery's DC power into AC power, which is then fed into the household grid. This indicates that the output power of current balcony photovoltaic energy storage systems is entirely dependent on the battery's capacity. If the system you purchase has a low capacity, it can only be used for general lighting or low-power appliances, based on existing applications. Furthermore, if sunlight is weak, the battery cannot continuously store energy, potentially leading to a situation where the battery runs out of power.
[0004] It can be seen that the traditional ones have the disadvantages of unstable solar energy input and the system output power being affected by battery capacity, which limits the application scenarios. Utility Model Content
[0005] The purpose of this application is to provide a power controller and a power control system to solve the technical problems of traditional solutions such as unstable solar energy input and system output power being affected by battery capacity, which lead to limited application scenarios.
[0006] In a first aspect, a power supply controller is provided, comprising a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch, wherein:
[0007] The inner three-phase lines of the three-phase mains power port are respectively connected to the inner three-phase lines of the AC charging pile port, and the three-phase lines are respectively provided with a mains power switch;
[0008] One end of the mains switch on one target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charger switch, the other end of the vehicle charger switch is connected to the other end of the mains switch on the target phase line, the third end of the bidirectional inverter is connected to one end of the energy storage device, and the other end of the energy storage device serves as a photovoltaic port for connection to a photovoltaic energy storage system.
[0009] Furthermore, the power controller further includes an electrical appliance switch, wherein the second end of the bidirectional inverter is further connected to one end of the electrical appliance switch, and the other end of the electrical appliance switch serves as an electrical appliance port for connecting to a household appliance.
[0010] Furthermore, when the power controller is in charging mode and the input of the photovoltaic port meets the power supply conditions, the power controller turns off the mains switches on the three-phase line; when the power controller is in charging mode and the input of the photovoltaic port does not meet the power supply conditions, the power controller turns on the mains switches on the three-phase line.
[0011] Furthermore, when the power controller is in the car charging mode, the power controller keeps the car charging switch and the mains switch on the three-phase line in the on state, so that the photovoltaic energy storage system converts the DC power of the energy storage device into AC single-phase power output through the bidirectional inverter, and mixes it with the three-phase mains to form a new three-phase mains to power the AC charging pile.
[0012] Furthermore, when the power controller is in the car charging mode, the power controller turns on the car charging switch and turns off the mains switch on the three-phase line, so that the photovoltaic energy storage system converts the DC power of the energy storage device into AC single-phase power through the bidirectional inverter and outputs it to the AC charging pile to power it.
[0013] Furthermore, when the energy storage device has completed its power consumption, the power controller cuts off the vehicle charging switch to switch to the three-phase mains power to supply power to the AC charging pile.
[0014] Furthermore, when the power controller is in the household appliance mode, the power controller turns on the appliance switch, so that the photovoltaic energy storage system converts the direct current of the energy storage device into household alternating current to power the household appliances.
[0015] Furthermore, when the power of the energy storage device is insufficient, the power controller switches to the three-phase mains power to supply power to the household appliance.
[0016] In a second aspect, a power supply control system is provided, the power supply control system including a photovoltaic energy storage system, an AC charging pile, and a power supply controller, wherein:
[0017] The power controller includes a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch, wherein:
[0018] The inner three-phase lines of the three-phase mains power port are respectively connected to the inner three-phase lines of the AC charging pile port, and the three-phase lines are respectively provided with a mains power switch;
[0019] One end of the mains switch on one target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charger switch, the other end of the vehicle charger switch is connected to the other end of the mains switch on the target phase line, the third end of the bidirectional inverter is connected to one end of the energy storage device, and the other end of the energy storage device serves as a photovoltaic port for connection to a photovoltaic energy storage system.
[0020] Furthermore, the power controller further includes an electrical appliance switch, wherein one end of the bidirectional inverter is further connected to one end of the electrical appliance switch, and the other end of the electrical appliance switch serves as an electrical appliance port for connecting to a household appliance.
[0021] It can be seen that one of the technical solutions provided in the present application provides a power supply controller, which includes a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch and a vehicle charging switch, wherein: the inner three-phase lines of the three-phase mains port are respectively connected to the inner three-phase lines of the AC charging pile port, and mains switches are respectively provided on the three-phase lines; one end of the mains switch on a target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charging switch, the other end of the vehicle charging switch is connected to the other end of the mains switch on the target phase line, the third end of the bidirectional inverter is connected to one end of the energy storage device, and the other end of the energy storage device is used as a photovoltaic port for connecting to a photovoltaic energy storage system. Through this power controller, the relationship between the three-phase mains power and the photovoltaic energy storage system can be directly established, so that the power controller can have both photovoltaic charging and mains charging modes, solving the shortcomings of unstable solar energy input and the system output power being affected by battery capacity, reducing the limitations of application scenarios. In addition, the power controller also leads to the AC charging pile port through the car charging switch, and can also be used for auxiliary car charging, with a wider range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0023] Figure 1 This is a connection diagram of a power supply control system provided by an embodiment of the present application;
[0024] Figure 2 This is a connection diagram of a battery protection system provided by an embodiment of the present application. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0026] In order to illustrate the technical solution of the present application, specific embodiments are provided below.
[0027] Please also refer to Figure 1-Figure 2 As shown, in one embodiment, a power supply controller is provided, which includes a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch, wherein:
[0028] The inner three-phase wires of the three-phase mains power port are connected to the inner three-phase wires of the AC charging pile port, and the three-phase wires are respectively provided with a mains switch; that is, inside the power controller, the three-phase mains power port and the AC charging pile port are connected via a three-phase wire, and the three-phase wires are provided with a mains switch. Figure 2 The three-phase line includes a first phase line L1, a second phase line L2, and a third phase line L3. Within the power controller, the three-phase mains port and the AC charging station port are connected via the first phase line L1, the second phase line L2, and the third phase line L3. A first switch K1, a second switch K2, and a third switch K3 are provided on the first phase line L1, the second phase line L2, and the third phase line L3, respectively. For example, the on / off functions of the first switch K1, the second switch K2, and the third switch K3 are controlled by a control chip within the power controller (not shown).
[0029] One end of the mains switch on one target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charger switch K4, the other end of the vehicle charger switch K4 is connected to the other end of the mains switch on the target phase line, and the third end of the bidirectional inverter is connected to one end of the energy storage device. The other end of the energy storage device is used as a photovoltaic port for connecting to a photovoltaic energy storage system. Specifically, the energy storage device is connected to the energy storage battery of the photovoltaic energy storage system, or the energy storage device itself refers to the energy storage battery of the photovoltaic energy storage system. There is no specific limitation, and the energy storage device can be charged / discharged externally.
[0030] It should be noted that the target phase line is any phase line in the three-phase lines. For example, the target phase line can be the first phase line. At this time, one end of the AC switch K1 on the first phase line L1 is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the car charger switch, and the other end of the car charger switch is connected to the other end of the AC switch K1. It can also be other phase lines. The situation is similar and will not be repeated here.
[0031] It can be seen that in this embodiment, a power controller is provided, through which the relationship between the three-phase mains power and the photovoltaic energy storage system can be directly established, so that the power controller can have two modes of photovoltaic charging and mains charging, solving the shortcomings of unstable solar energy input and the system output power being affected by battery capacity, reducing the limitation of application scenarios, and the power controller also leads to the AC charging pile port through the car charging switch to solve the problem of discontinuous energy supply of the pure photovoltaic energy storage system. It can also be used for auxiliary car charging, and the application scenarios are more extensive.
[0032] The power controller further includes an appliance switch K5. The second end of the bidirectional inverter is connected to one end of the appliance switch K5. The other end of the appliance switch K5 serves as an appliance port for connection to a household appliance, such as, but not limited to, a hair dryer or electric fan. Similarly, as an example, the on / off function of the appliance switch K5 is controlled by a control chip within the power controller (not shown).
[0033] In this embodiment, by providing an appliance switch K5 and an appliance port on the power controller, photovoltaic power and mains power can be combined to power household appliances, thereby ensuring practicality and power supply capacity.
[0034] It should be noted that based on the connection relationship of the power controller provided in the embodiment of the present application, the embodiment of the present application also provides several working modes, including charging mode, car charging mode and home mode, which are explained below respectively.
[0035] In one embodiment, when the power controller is in charging mode and the input of the photovoltaic port meets the power supply conditions, the power controller turns off the mains switches on the three-phase line; when the power controller is in charging mode and the input of the photovoltaic port does not meet the power supply conditions, the power controller turns on the mains switches on the three-phase line.
[0036] In this embodiment, since the power controller is connected to both the photovoltaic energy storage system and the three-phase mains electricity, when solar energy input meets the conditions (for example, sufficient load or sufficient AC charging station), solar energy is prioritized, and the mains electricity is placed in a waiting state. When solar energy is insufficient to supply power, the three-phase mains electricity is automatically connected. In this way, the photovoltaic energy storage system can continuously store energy to meet emergency requirements. It is also worth noting that, as an example, a communication relationship with the power controller can also be established through an application program (APP). Through the APP, the power controller can be set to control the three-phase mains electricity to charge the energy storage battery of the photovoltaic energy storage system at different time periods, thereby playing the role of peak shaving and valley filling.
[0037] Furthermore, when the power controller is in the car charging mode, the power controller keeps the car charging switch and the mains switch on the three-phase line in the on state, so that the photovoltaic energy storage system converts the DC power of the energy storage device into AC single-phase power output through the bidirectional inverter, and mixes it with the three-phase mains to form a new three-phase mains to power the AC charging pile.
[0038] Furthermore, when the power controller is in the car charging mode, the power controller turns on the car charging switch and turns off the mains switch on the three-phase line, so that the photovoltaic energy storage system converts the DC power of the energy storage device into AC single-phase power through the bidirectional inverter and outputs it to the AC charging pile to power it.
[0039] In the above embodiment, the photovoltaic energy storage system is combined with a power controller and an AC charging pile to charge the car. The photovoltaic energy storage system converts the DC power of the energy storage battery into AC single-phase power output through the power controller, which is then mixed with the three-phase mains power to form a new three-phase mains power to power the car charging pile. This can maximize the utilization of the energy storage battery power in the photovoltaic energy storage system, solve the problem of low output power of traditional photovoltaic energy storage systems, and also meet the high-power emergency charging of the car, with stronger practical scenarios.
[0040] Furthermore, when the energy storage device has completed its power consumption, the power controller cuts off the vehicle charging switch to switch to the three-phase mains power to supply power to the AC charging pile.
[0041] In this embodiment, once the energy storage battery is fully depleted, the power controller automatically switches to AC power to directly power the AC charging station, fully charging the vehicle. In other solutions, the power controller can also power single-phase AC charging stations, providing multiple power supply options and expanding application scenarios, demonstrating the power controller's practicality.
[0042] Furthermore, when the power controller is in the household appliance mode, the power controller turns on the appliance switch, so that the photovoltaic energy storage system converts the direct current of the energy storage device into household alternating current to power the household appliances.
[0043] Furthermore, when the power of the energy storage device is insufficient, the power controller switches to the three-phase mains power to supply power to the household appliance.
[0044] In this embodiment, the photovoltaic energy storage system can directly convert direct current (DC) into household alternating current (AC) via a power controller to power household appliances. While the output power of the photovoltaic energy storage system can generally meet the needs of most high-power appliances, it is possible that some appliances, or multiple appliances in use simultaneously, may still burden the power supply and cause insufficient energy storage batteries. Therefore, when the energy storage battery is low on power, the power controller automatically switches to AC power to power the appliances. This fully utilizes the energy storage system's power while ensuring the normal operation of household appliances.
[0045] It should be noted that, as an example, any operating mode of the above-mentioned power controller can be set in advance by manually setting the power controller or setting it through the APP, without specific limitation. It is also worth noting that the power controller provided by the embodiment of the present application effectively improves the application scenarios of the photovoltaic energy storage system.
[0046] In a second aspect, a power supply control system is provided, the power supply control system including a photovoltaic energy storage system, an AC charging pile, and a power supply controller, wherein:
[0047] The power controller includes a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch, wherein:
[0048] The inner three-phase lines of the three-phase mains power port are respectively connected to the inner three-phase lines of the AC charging pile port, and the three-phase lines are respectively provided with a mains power switch;
[0049] One end of the mains switch on one target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charger switch, the other end of the vehicle charger switch is connected to the other end of the mains switch on the target phase line, the third end of the bidirectional inverter is connected to one end of the energy storage device, and the other end of the energy storage device serves as a photovoltaic port for connection to a photovoltaic energy storage system.
[0050] Furthermore, the power controller further includes an electrical appliance switch, wherein one end of the bidirectional inverter is further connected to one end of the electrical appliance switch, and the other end of the electrical appliance switch serves as an electrical appliance port for connecting to a household appliance.
[0051] It can be seen that in this embodiment, a power control system is provided. Through the power controller, the relationship between the three-phase mains power and the photovoltaic energy storage system can be directly established, so that the power controller can have two modes of photovoltaic charging and mains charging, which solves the shortcomings of unstable solar energy input and the system output power being affected by battery capacity, and reduces the limitations of application scenarios. In addition, the power controller also leads to the AC charging pile port through the car charging switch, and can also be used for auxiliary car charging, with a wider range of application scenarios.
[0052] In addition, based on the power controller provided in the embodiment of the present application, the power control process or mode implemented by the power control system can refer to the description of the aforementioned embodiment. To avoid repetition, it will not be explained here.
[0053] In one embodiment, the photovoltaic energy storage system is further connected to the cloud, and the photovoltaic energy storage system can share relevant data with the cloud, or the cloud can monitor / control the operation of the photovoltaic energy storage system, without specific limitation.
[0054] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.
Claims
1. A power controller, characterized in that: The power controller includes a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch, wherein: The inner three-phase lines of the three-phase mains power port are respectively connected to the inner three-phase lines of the AC charging pile port, and the three-phase lines are respectively provided with a mains power switch; One end of the mains switch on one target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charger switch, the other end of the vehicle charger switch is connected to the other end of the mains switch on the target phase line, the third end of the bidirectional inverter is connected to one end of the energy storage device, and the other end of the energy storage device serves as a photovoltaic port for connection to a photovoltaic energy storage system.
2. The power controller according to claim 1, wherein: The power controller further includes an appliance switch, wherein the second end of the bidirectional inverter is further connected to one end of the appliance switch, and the other end of the appliance switch serves as an appliance port for connecting to a household appliance.
3. The power controller according to claim 1, wherein: When the power controller is in charging mode and the input of the photovoltaic port meets the power supply conditions, the power controller turns off all the mains switches on the three-phase line; When the power controller is in the charging mode and the input of the photovoltaic port does not meet the power supply condition, the power controller turns on all the mains switches on the three-phase line.
4. The power controller according to claim 1, wherein: When the power controller is in the vehicle charging mode, the power controller turns on the vehicle charging switch and the mains switch on the three-phase line, so that the photovoltaic energy storage system converts the DC power of the energy storage device into AC single-phase power output through the bidirectional inverter, and mixes it with the three-phase mains power to form a new three-phase mains power to power the AC charging pile.
5. The power controller according to claim 1, wherein: When the power controller is in the vehicle charging mode, the power controller turns on the vehicle charging switch and turns off the mains switch on the three-phase line, so that the photovoltaic energy storage system converts the DC power of the energy storage device into AC single-phase power through the bidirectional inverter and outputs it to the AC charging pile for power supply.
6. The power controller according to claim 4 or 5, wherein: When the energy storage device has finished consuming electricity, the power controller cuts off the vehicle charging switch to switch to the three-phase mains power to supply power to the AC charging pile.
7. The power controller according to claim 2, wherein: When the power controller is in the household appliance mode, the power controller turns on the appliance switch, so that the photovoltaic energy storage system converts the direct current of the energy storage device into household alternating current to power the household appliance.
8. The power controller according to claim 7, wherein: When the power of the energy storage device is insufficient, the power controller switches to the three-phase mains power to supply power to the household appliance.
9. A power supply control system, characterized in that: The power control system includes a photovoltaic energy storage system, an AC charging pile and a power controller, wherein: The power controller includes a three-phase mains port for connecting to a three-phase mains, an AC charging pile port for connecting to an AC charging pile, a bidirectional inverter, an energy storage device, a mains switch, and a vehicle charging switch, wherein: The inner three-phase lines of the three-phase mains power port are respectively connected to the inner three-phase lines of the AC charging pile port, and the three-phase lines are respectively provided with a mains power switch; One end of the mains switch on one target phase line is connected to the first end of the bidirectional inverter, the second end of the bidirectional inverter is connected to one end of the vehicle charger switch, the other end of the vehicle charger switch is connected to the other end of the mains switch on the target phase line, the third end of the bidirectional inverter is connected to one end of the energy storage device, and the other end of the energy storage device serves as a photovoltaic port for connection to a photovoltaic energy storage system.
10. The power supply control system according to claim 9, wherein: The power controller further includes an appliance switch, wherein one end of the bidirectional inverter is further connected to one end of the appliance switch, and the other end of the appliance switch serves as an appliance port for connecting to a household appliance.