Intelligent power distribution circuit and intelligent power distribution method

Abstract

The application provides a kind of intelligent power distribution circuit and intelligent power distribution method, it is related to power distribution technical field.The intelligent power distribution circuit includes wind power generation module, solar power generation module, battery module, first relay, second relay, third relay, fourth relay and controller, wind power generation module and solar power generation module are respectively connected with first relay, second relay, battery module is also respectively connected with second relay, third relay, first relay, third relay are all connected with power supply bus, the input end of power supply bus is also used to connect commercial power through fourth relay, the output end of power supply bus is used to connect load, controller is respectively connected with first relay, second relay, third relay and fourth relay.The intelligent power distribution circuit and intelligent power distribution method provided by the application have the effect of flexible power distribution, which meets the actual demand.

Description

Technical Field

[0001] This application relates to the field of power distribution technology, and more specifically, to an intelligent power distribution circuit and an intelligent power distribution method. Background Technology

[0002] Currently, clean energy has been widely used in various power supply scenarios. However, in the power distribution process, the distribution methods for clean energy are still relatively simple.

[0003] Generally, when using clean energy, a combination of clean energy and mains power is used for power supply. However, since the power demand of user loads may vary, a single power distribution method cannot meet the actual needs.

[0004] In summary, existing technologies suffer from the problem that a single power distribution method cannot meet actual needs. Summary of the Invention

[0005] The purpose of this application is to provide an intelligent power distribution circuit and an intelligent power distribution method to solve the problem that the single power distribution method in the prior art cannot meet the actual needs.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0007] In a first aspect, embodiments of this application provide an intelligent power distribution circuit, comprising a wind power generation module, a solar power generation module, a battery module, a first relay, a second relay, a third relay, a fourth relay, and a controller. The wind power generation module and the solar power generation module are electrically connected to the first relay and the second relay, respectively. The battery module is also electrically connected to the second relay and the third relay, respectively. Both the first relay and the third relay are electrically connected to a power supply bus. The input terminal of the power supply bus is also used to connect to mains power through the fourth relay. The output terminal of the power supply bus is used to connect to a load. The controller is electrically connected to the first relay, the second relay, the third relay, and the fourth relay, respectively.

[0008] When the output power of the wind power generation module and the solar power generation module is greater than or equal to the power demand of the load, the controller controls the fourth relay to open and the first relay to close.

[0009] When the total output power of the wind power generation module and the solar power generation module is less than the required power of the load, the controller is used to control the fourth relay to disconnect from the second relay and control the first relay to connect to the third relay.

[0010] When the total output power of the wind power generation module, the solar power generation module, and the battery module is less than the power required by the load, the controller controls the second relay to disconnect and controls the first relay, the third relay, and the fourth relay to turn on.

[0011] Optionally, the controller is further configured to control the second relay, the third relay, and the fourth relay to disconnect and control the first relay to close when the total output power of the wind power generation module and the solar power generation module is greater than the required power of the load and the difference between the total output power and the required power is less than a preset value;

[0012] When the total output power of the wind power generation module and the solar power generation module is greater than the required power of the load, and the difference between the total output power and the required power is greater than a preset value, the controller is also used to control the third relay and the fourth relay to disconnect, and control the first relay and the second relay to connect.

[0013] Optionally, when the total output power of the wind power generation module and the solar power generation module is less than the power demand of the load, and it is during a preset off-peak electricity period, the controller is further configured to control the first relay to open and the second relay, the third relay and the fourth relay to close, so as to charge the battery module when supplying power to the load.

[0014] Optionally, the controller is also electrically connected to the battery module, and the controller is also used to determine the time difference between the current time and the off-peak electricity period, and to determine the output power of the battery based on the time difference.

[0015] Optionally, the controller is configured to control the battery to output power at a first power level when the time difference is within a first time period; control the battery to output power at a second power level when the time difference is within a second time period; and control the battery to output power at a third power level when the time difference is within a third time period; wherein the first time period, the second time period, and the third time period gradually decrease, and the first power, the second power, and the third power gradually decrease.

[0016] Secondly, embodiments of this application also provide an intelligent power distribution method, characterized in that the intelligent power distribution method is applied to a controller in the aforementioned intelligent power distribution circuit, the method comprising:

[0017] When the output power of the wind power generation module and the solar power generation module is greater than or equal to the power demand of the load, the fourth relay is controlled to open and the first relay is controlled to close.

[0018] When the total output power of the wind power generation module and the solar power generation module is less than the required power of the load, the fourth relay is controlled to disconnect from the second relay, and the first relay is controlled to connect to the third relay.

[0019] When the total output power of the wind power generation module, the solar power generation module, and the battery module is less than the power required by the load, the second relay is controlled to disconnect, and the first relay, the third relay, and the fourth relay are controlled to turn on.

[0020] Optionally, the method further includes:

[0021] When the total output power of the wind power generation module and the solar power generation module is greater than the required power of the load, and the difference between the total output power and the required power is less than a preset value, the second relay, the third relay and the fourth relay are controlled to open, and the first relay is controlled to close.

[0022] When the total output power of the wind power generation module and the solar power generation module is greater than the required power of the load, and the difference between the total output power and the required power is greater than a preset value, the controller is also used to control the third relay and the fourth relay to disconnect, and control the first relay and the second relay to connect.

[0023] Optionally, the method further includes:

[0024] When the total output power of the wind power generation module and the solar power generation module is less than the power demand of the load, and it is during a preset off-peak electricity period, the first relay is controlled to open, and the second relay, the third relay and the fourth relay are controlled to close, so as to charge the battery module while supplying power to the load.

[0025] Optionally, the controller is also electrically connected to the battery module, and the method further includes:

[0026] Determine the time difference between the current time and the aforementioned off-peak electricity consumption period;

[0027] The output power of the battery is determined based on the time difference.

[0028] Optionally, the step of determining the output power of the battery based on the time difference includes:

[0029] When the time difference is within the first time period, the battery is controlled to output power at the first power.

[0030] When the time difference is within the second time period, the battery is controlled to output power at the second power.

[0031] When the time difference is within the third time period, the battery is controlled to output power at the third power level.

[0032] The power gradually decreases during the first time period, the second time period, and the third time period, and the power gradually decreases during the first time period, the second time period, and the third time period.

[0033] Compared with the prior art, this application has the following advantages:

[0034] This application provides an intelligent power distribution circuit and an intelligent power distribution method. The intelligent power distribution circuit includes a wind power generation module, a solar power generation module, a battery module, a first relay, a second relay, a third relay, a fourth relay, and a controller. The wind power generation module and the solar power generation module are electrically connected to the first relay and the second relay, respectively. The battery module is also electrically connected to the second relay and the third relay, respectively. The first relay and the third relay are both electrically connected to a power supply bus. The input end of the power supply bus is also used to connect to the mains power through the fourth relay. The output end of the power supply bus is used to connect to the load. The controller is electrically connected to the first relay, the second relay, the third relay, and the fourth relay, respectively. Specifically, when the output power of the wind power generation module and the solar power generation module is greater than or equal to the load's required power, the controller controls the fourth relay to open and the first relay to close. When the total output power of the wind power generation module and the solar power generation module is less than the load's required power, the controller controls the fourth relay to open and the second relay to close, and the first relay to close and the third relay to open. When the total output power of the wind power generation module, the solar power generation module, and the battery module is less than the load's required power, the controller controls the second relay to open and the first relay, the third relay, and the fourth relay to open. Because the controller will control the closing of different relays under different conditions, the power distribution method is more diversified and meets actual needs.

[0035] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1This is a schematic diagram of a smart power distribution circuit provided in an embodiment of this application.

[0038] Figure 2 An exemplary flowchart of the intelligent power distribution method provided in the embodiments of this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] In the description of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] As described in the background section, although clean energy can be applied to different power supply scenarios, its distribution methods remain relatively simple.

[0047] In view of this, this application provides an intelligent power distribution circuit that achieves flexible power distribution to the load by controlling the conduction mode of different relays under different conditions, thereby meeting actual needs.

[0048] The following is an exemplary description of the intelligent power distribution circuit provided in this application:

[0049] As an optional implementation, please refer to Figure 1The intelligent power distribution circuit includes a wind power generation module, a solar power generation module, a battery module, a first relay, a second relay, a third relay, a fourth relay, and a controller. The wind power generation module and the solar power generation module are electrically connected to the first relay and the second relay, respectively. The battery module is also electrically connected to the second relay and the third relay, respectively. The first relay and the third relay are both electrically connected to the power supply bus. The input end of the power supply bus is also used to connect to the mains power through the fourth relay, and the output end of the power supply bus is used to connect to the load. The controller is electrically connected to the first relay, the second relay, the third relay, and the fourth relay, respectively. Specifically, when the output power of the wind power generation module and the solar power generation module is greater than or equal to the load's required power, the controller controls the fourth relay to open and the first relay to close. When the total output power of the wind power generation module and the solar power generation module is less than the load's required power, the controller controls the fourth relay to open and the second relay to close, and the first relay to close and the third relay to open. When the total output power of the wind power generation module, the solar power generation module, and the battery module is less than the load's required power, the controller controls the second relay to open and the first relay, the third relay, and the fourth relay to open.

[0050] The above implementation method makes power distribution more flexible, and wind and solar energy, as renewable energy sources, have lower costs when used by user loads. Based on this, the controller in this application prioritizes wind and solar power modules over grid power during power distribution. Therefore, when the output power of the wind and solar power modules is greater than or equal to the load's required power, the controller will control the fourth relay to open and the first relay to close, thus eliminating the need for grid power and using only clean energy sources such as wind or solar power for power supply, saving on electricity costs.

[0051] When the total output power of the wind power generation module and the solar power generation module is less than the power demand of the load, the controller does not directly use the mains power for power supply. Instead, it controls the fourth relay to disconnect from the second relay and controls the first relay to connect to the third relay, so that the wind power generation module, the solar power generation module and the battery module can work together to supply power to meet the power demand of the load.

[0052] When the total output power of the three components is less than the load's required power, the second relay is disconnected, and the first, third, and fourth relays are turned on. At this time, the wind power module, solar power module, battery module, and mains power supply work together to power the load, reducing power supply costs.

[0053] It should be noted that this application does not limit the specific circuits of wind power generation modules, solar power generation modules, and battery modules. For example, the above modules may include inverter circuits or share an inverter to achieve the purpose of converting DC to AC.

[0054] When the output power of the wind power generation module and the solar power generation module is greater than the power demand of the load, the controller can also control the fourth relay to open and the first and second relays to close, so that the wind power generation module and the solar power generation module can supply power to the load while charging the battery module.

[0055] Furthermore, when the fourth control relay is turned on, in one possible implementation, the mains power, wind power generation module, solar power generation module and battery module are used for power distribution. In another possible implementation, when the mains power is used, the wind power generation module, solar power generation module and battery module do not distribute power. For example, at this time, the wind power generation module and solar power generation module jointly charge the battery module.

[0056] Based on this, in one implementation, when the total output power of the wind power generation module and the solar power generation module exceeds the load's required power, and the difference between the total output power and the required power is less than a preset value, the controller will control the second, third, and fourth relays to open, and control the first relay to close. At this time, the total output power of the wind power generation module and the solar power generation module is close to the load's required power, and the electrical energy generated by the wind power generation module and the solar power generation module is entirely used to power the load.

[0057] When the total output power of the wind power module and the solar power module exceeds the load's required power, and the difference between the total output power and the required power exceeds a preset value, the controller will disconnect the third and fourth relays and connect the first and second relays. At this time, the total output power of the wind power module and the solar power module is relatively large, allowing the battery module to be charged simultaneously while supplying power to the load.

[0058] Of course, the battery can also be charged by mains power. In one implementation, in order to save costs as much as possible, when using mains power to charge the battery module, it can be selected to charge the battery module during off-peak hours. At this time, the controller is used to control the first relay to open and the second, third and fourth relays to close, so as to charge the battery module while supplying power to the load.

[0059] It should be noted that mains power supply includes peak and off-peak hours. Peak hours are generally from 8:00 AM to 10:00 PM, during which electricity demand is high and electricity costs are relatively high. Off-peak hours are generally from 10:00 PM to 8:00 AM, during which electricity demand is low and electricity costs are relatively low. Therefore, by charging the battery module during off-peak hours and then using the battery module to power the load during peak hours, it is possible to reduce electricity costs.

[0060] Furthermore, as one implementation method, the controller is also electrically connected to the battery module. When the battery module supplies power to the load during peak electricity consumption periods, the controller is also used to determine the time difference between the current time and the off-peak electricity consumption period, and determines the output power of the battery based on the time difference. For example, when the time difference is within the first time period, the battery is controlled to output at the first power; when the time difference is within the second time period, the battery is controlled to output at the second power; when the time difference is within the third time period, the battery is controlled to output at the third power; wherein, the first, second, and third time periods gradually decrease, and the first, second, and third power gradually decrease.

[0061] Since battery module discharge is a continuous process, and the charging and discharging process continues daily, this implementation method ensures that, in the initial stage of battery module discharge, the output power meets the load's power requirements, conforming to actual needs. Furthermore, in the later stages of battery module discharge, the discharge power can be reduced to avoid excessive depth of discharge and extend the battery module's lifespan.

[0062] Based on the above implementation method, please refer to Figure 2 This application also provides an intelligent power distribution method, applied to a controller in the aforementioned intelligent power distribution circuit, the method comprising:

[0063] S102, when the output power of the wind power generation module and the solar power generation module is greater than or equal to the load's required power, control the fourth relay to open and control the first relay to close;

[0064] S104, when the total output power of the wind power generation module and the solar power generation module is less than the load's required power, control the fourth relay to disconnect from the second relay, and control the first relay to connect to the third relay.

[0065] S106 When the total output power of the wind power generation module, solar power generation module and battery module is less than the load's required power, the second relay is controlled to disconnect, and the first relay, third relay and fourth relay are controlled to turn on.

[0066] S102 to S106 are parallel items and have no order of execution in actual implementation.

[0067] Furthermore, the method also includes:

[0068] S108, when the total output power of the wind power generation module and the solar power generation module is greater than the load's required power, and the difference between the total output power and the required power is less than a preset value, control the second relay, the third relay and the fourth relay to open, and control the first relay to close.

[0069] S110, when the total output power of the wind power generation module and the solar power generation module is greater than the load's required power, and the difference between the total output power and the required power is greater than a preset value, the controller is also used to control the third relay and the fourth relay to disconnect, and control the first relay and the second relay to connect.

[0070] S112, when the total output power of the wind power generation module and the solar power generation module is less than the load's required power and it is during a preset low-power period, the first relay is opened and the second, third and fourth relays are closed to charge the battery module while supplying power to the load.

[0071] The controller is also electrically connected to the battery module, and the method further includes:

[0072] S114, determine the time difference between the current time and the off-peak electricity consumption period;

[0073] S116, determine the battery output power based on the time difference.

[0074] S116 includes:

[0075] S1161, when the time difference is within the first time period, control the battery to output the first power;

[0076] S1162, when the time difference is within the second time period, control the battery to output power at the second power.

[0077] S1163, when the time difference is within the third time period, control the battery to output power at the third power level; wherein, the first, second, and third time periods gradually decrease, and the first, second, and third power levels gradually decrease.

[0078] In summary, this application provides an intelligent power distribution circuit and an intelligent power distribution method. The intelligent power distribution circuit includes a wind power generation module, a solar power generation module, a battery module, a first relay, a second relay, a third relay, a fourth relay, and a controller. The wind power generation module and the solar power generation module are electrically connected to the first relay and the second relay, respectively. The battery module is also electrically connected to the second relay and the third relay, respectively. The first relay and the third relay are both electrically connected to a power supply bus. The input end of the power supply bus is also used to connect to the mains power through the fourth relay. The output end of the power supply bus is used to connect to the load. The controller is connected to the first relay, the second relay, and the third relay, respectively. The controller is electrically connected to the device and the fourth relay. When the output power of the wind power module and the solar power module is greater than or equal to the load's required power, the controller controls the fourth relay to open and the first relay to close. When the total output power of the wind power module and the solar power module is less than the load's required power, the controller controls the fourth relay to open and the second relay to close, and the first relay to close and the third relay to open. When the total output power of the wind power module, the solar power module, and the battery module is less than the load's required power, the controller controls the second relay to open and the first, third, and fourth relays to open. Because the controller controls different relays to close under different conditions, the power distribution method becomes more diversified and better suited to actual needs.

[0079] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0080] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An intelligent power distribution circuit, characterized by, The intelligent power distribution circuit comprises a wind power generation module, a solar power generation module, a battery module, a first relay, a second relay, a third relay, a fourth relay and a controller, the wind power generation module and the solar power generation module are electrically connected with the first relay and the second relay respectively, the battery module is also electrically connected with the second relay and the third relay respectively, the first relay and the third relay are electrically connected with a power supply bus, an input end of the power supply bus is also used for connecting commercial power through the fourth relay, an output end of the power supply bus is used for connecting a load, and the controller is electrically connected with the first relay, the second relay, the third relay and the fourth relay respectively; wherein, when the output power of the wind power generation module and the solar power generation module is greater than or equal to the required power of the load, the controller is used for controlling the fourth relay to be disconnected and the first relay to be closed; when the total output power of the wind power generation module and the solar power generation module is less than the required power of the load, the controller is used for controlling the fourth relay and the second relay to be disconnected and the first relay and the third relay to be turned on; when the total output power of the wind power generation module, the solar power generation module and the battery module is less than the required power of the load, the controller is used for controlling the second relay to be disconnected and the first relay, the third relay and the fourth relay to be turned on; the controller is also electrically connected with the battery module, and the controller is also used for determining the time difference between the current time and the time period of the power consumption valley and determining the output power of the battery according to the time difference; when the total output power of the wind power generation module and the solar power generation module is less than the required power of the load and is in the preset time period of the power consumption valley, the controller is also used for controlling the first relay to be disconnected and the second relay, the third relay and the fourth relay to be closed, so as to charge the battery module when the load is powered; the controller is used for controlling the battery to output the first power when the time difference is in a first period, controlling the battery to output the second power when the time difference is in a second period and controlling the battery to output the third power when the time difference is in a third period, wherein the first period, the second period and the third period gradually decrease, and the first power, the second power and the third power gradually decrease.

2. The intelligent power distribution circuit of claim 1, wherein, the controller is also used for controlling the second relay, the third relay and the fourth relay to be disconnected and the first relay to be closed when the total output power of the wind power generation module and the solar power generation module is greater than the required power of the load and the difference between the total output power and the required power is less than a preset value; When the total output power of the wind power module and the solar power module is greater than the demand power of the load, and the difference between the total output power and the demand power is greater than a preset value, the controller is further configured to control the third relay and the fourth relay to be disconnected, and control the first relay and the second relay to be turned on.

3. A smart power distribution method, characterized by, The intelligent power distribution method is applied to the controller in the intelligent power distribution circuit of claim 1 or 2, and the method comprises: When the output power of the wind power module and the solar power module is greater than or equal to the demand power of the load, the fourth relay is controlled to be disconnected, and the first relay is controlled to be closed; When the total output power of the wind power module and the solar power module is less than the demand power of the load, the fourth relay and the second relay are controlled to be disconnected, and the first relay and the third relay are controlled to be turned on; When the total output power of the wind power module, the solar power module and the battery module is less than the demand power of the load, the second relay is controlled to be disconnected, and the first relay, the third relay and the fourth relay are controlled to be turned on.

4. The intelligent power distribution method of claim 3, wherein, The method further comprises: When the total output power of the wind power module and the solar power module is greater than the demand power of the load, and the difference between the total output power and the demand power is less than a preset value, the second relay, the third relay and the fourth relay are controlled to be disconnected, and the first relay is controlled to be closed.

5. The intelligent power distribution method of claim 3, wherein, The method further comprises: When the total output power of the wind power module and the solar power module is less than the demand power of the load, and it is in a preset low power consumption time period, the first relay is controlled to be disconnected, and the second relay, the third relay and the fourth relay are controlled to be closed, so as to charge the battery module when the load is powered.

6. The intelligent power distribution method of claim 3, wherein, The controller is further electrically connected with the battery module, and the method further comprises: determining the time difference between the current time and the low power consumption time period; determining the output power of the battery according to the time difference.

7. The intelligent power distribution method of claim 6, wherein, The step of determining the output power of the battery according to the time difference comprises: when the time difference is in a first time period, controlling the battery to output a first power; when the time difference is in a second time period, controlling the battery to output a second power; when the time difference is in a third time period, controlling the battery to output a third power; wherein the first time period, the second time period and the third time period gradually decrease, and the first power, the second power and the third power gradually decrease.

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