CN111682569A - An intelligently controlled energy storage system - Google Patents

Abstract

The embodiment of the present invention discloses an energy storage system with an intelligent gateway, which is suitable for connecting with a power consumption end, and the power consumption end includes one or more loads, including: a management module, which is used for according to a predefined one or more loads. The power consumption priority order of multiple loads generates corresponding switch instructions; the power supply module is used to turn on or off the power supply path of one or more loads in the power consumption end according to the corresponding switch instructions, so as to realize one or more The power consumption priority of each load is supplied. The embodiment of the present invention provides an energy storage system with an intelligent gateway, in which the management module controls the power supply module to supply power to multiple loads according to preset priorities according to user requirements, which solves the problem that the existing technology cannot intelligently control the power consumption end. The power consumption of multiple loads realizes the priority power supply to multiple loads at the power consumption end, which improves the user experience.

Description

An intelligently controlled energy storage system

technical field

The embodiments of the present invention relate to energy storage technologies, and in particular, to an intelligently controlled energy storage system.

Background technique

With the widespread application of solar power generation and lithium-ion batteries, their integration is becoming more and more close. Solar energy is used to generate electricity during the day, and the surplus energy is stored in the energy storage system, and then released at night, the solar energy can be used efficiently and the consumption of power grid electricity can be reduced.

A simple energy storage system generally consists of an energy storage battery and a battery management system. The photovoltaic energy storage system also includes photovoltaic panels and their inverters. Some PV inverters include grid-connected ports and off-grid ports. The functions of this type of system are relatively simple and can only solve the problem on the power generation side. However, in practical applications, users often face the problem of mismatch between the power generation side and the power consumption side. When the AC grid is powered off, the grid-connected inverter cannot continue to supply power, and the off-grid inverter cannot achieve seamless switching, which will make users Restart work after the load is cut off.

SUMMARY OF THE INVENTION

The present invention provides an intelligently controlled energy storage system, which is suitable for connecting with a power consumption end, wherein the power consumption end includes one or more loads, so as to implement priority power supply to multiple loads of the power consumption end.

An intelligently controlled energy storage system provided by an embodiment of the present invention is suitable for connection with an electrical end, and the electrical end includes one or more loads, including:

a management module, configured to generate corresponding switching instructions according to the pre-defined power consumption priority order of one or more loads;

The power supply module is configured to turn on or off the power supply path of one or more loads in the power consumption end according to the corresponding switch instruction, so as to realize the power supply of one or more loads according to the power consumption priority.

Optionally, the power supply module is further connected to the grid terminal for generating and supplying voltage to the grid terminal.

Optionally, it also includes an energy gateway, the energy gateway is connected between the power supply module and the power grid terminal, and is used for disconnecting or conducting between the power supply module and the power grid terminal according to the power supply parameters of the power grid terminal. Connection.

Optionally, the management module may also control the power supply module to supply power to the power consumption terminal according to the selected power consumption mode, and the power consumption mode includes a backup power mode, a photovoltaic self-use mode, and a peak-shaving and valley-filling mode.

Optionally, the power supply module includes a photovoltaic power generation module and/or a diesel power generation module, and the photovoltaic power generation module is used to convert solar energy into electrical energy and transmit it to the electricity consumption end and the power grid end, and the diesel power generation module It is used to convert biological energy into electrical energy and transmit it to the electricity consumption end and the grid end.

Optionally, the power supply module further includes a battery module, and the battery module includes one or more energy storage batteries, and the energy storage batteries are used to receive the photovoltaic power generation module and/or the diesel power generation module and transmit it to electrical energy for processing. Store and transmit electrical energy to the consumer end and the grid end.

Optionally, the power supply module further includes a conversion module, which is connected to the battery module and is used for converting alternating current into direct current or converting direct current into alternating current.

Optionally, the management module includes a control chip, and the control chip is configured to generate corresponding switching instructions according to a pre-defined power consumption priority order of one or more loads.

Optionally, the management module includes a communication module, the communication module is connected to an external terminal and the control chip, and is used for transmitting interactive data between the control chip and the external terminal.

Optionally, the management module further includes a detection module, the detection module is connected to the control chip, and the detection module is configured to detect the transmission voltage data of the energy storage system and transmit it to the control chip for storage.

The embodiment of the present invention discloses an energy storage system with an intelligent gateway, which is suitable for connecting with a power consumption end, and the power consumption end includes one or more loads, including: a management module, which is used for according to a predefined one or more loads. The power consumption priority order of multiple loads generates corresponding switch instructions; the power supply module is used to turn on or off the power supply path of one or more loads in the power consumption end according to the corresponding switch instructions, so as to realize one or more The power consumption priority of each load is supplied. The embodiment of the present invention provides an energy storage system with an intelligent gateway, in which the management module controls the power supply module to supply power to multiple loads according to preset priorities according to user requirements, which solves the problem that the existing technology cannot intelligently control the power consumption end. The power consumption of multiple loads realizes the priority power supply to multiple loads at the power consumption end, which improves the user experience.

Description of drawings

1 is a module connection diagram of an intelligently controlled energy storage system according to Embodiment 1 of the present invention;

2 is a circuit diagram of an intelligently controlled energy storage system provided in Embodiment 1 of the present invention;

3 is a module connection diagram of an intelligently controlled energy storage system according to Embodiment 2 of the present invention;

FIG. 4 is a circuit diagram of an intelligently controlled energy storage system provided in Embodiment 2 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Before discussing the exemplary embodiments in greater detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowchart depicts the steps as a sequential process, many of the steps may be performed in parallel, concurrently, or concurrently. Furthermore, the order of the steps can be rearranged. The process may be terminated when its operation is complete, but may also have additional steps not included in the figures. A process may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Furthermore, the terms "first," "second," etc. may be used herein to describe various directions, acts, steps or elements, etc., but are not limited by these terms. These terms are only used to distinguish a first direction, act, step or element from another direction, act, step or element. For example, a first voltage may be referred to as a first voltage, and similarly, a second voltage may be referred to as a first voltage, without departing from the scope of this application. Both the first voltage and the second voltage are the first voltage, but they are not the same first voltage. The terms "first", "second" and the like should not be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

Example 1

FIG. 1 is a module connection diagram of an intelligently controlled energy storage system provided in Embodiment 1 of the present invention, which is suitable for connection with a power consumption end 3, and the power consumption end 3 includes one or more loads. In the case of priority power supply for multiple loads at the power end 3, including: management module 1 and power supply module 2, specifically:

The management module 1 is configured to generate corresponding switch instructions according to the pre-defined power consumption priority order of one or more loads.

In this embodiment, the management module 1 is the main control module of the energy storage system, which may include a series of control modules such as a processor, a communication gateway, etc., which can independently generate control commands or receive external terminal control commands to control other modules. The priority order of electricity consumption can be defined by the user, and can also be selected by default according to the selection of most users. Exemplarily, the user-end loads include: washing machines, refrigerators, air conditioners, and electric lights, and the user can set the electric light as the first priority. , the refrigerator is the second priority, the air conditioner is the third priority, and the washing machine is the fourth priority. When the power grid end 4 is powered off, the power supply module 2 will give priority to supplying power to the lights to keep the lights working normally. If there is excess power, it will be provided to the refrigerator, and so on. It is also possible to predict the power supply capacity of the power supply module 2 in advance after the power grid terminal 4 is powered off, and plan the power consumption time of each load in advance according to the power consumption priority order. The washing machine and the air conditioner are set to use time, for example, the air conditioner is set to work for 2 hours, and the washing machine is set to work for 1 hour, thereby ensuring that the power supply module 2 has enough power for use.

Referring to FIG. 2, FIG. 2 is a circuit diagram of an intelligently controlled energy storage system provided in Embodiment 1 of the present invention, the management module 1 includes a control chip 11, and the control chip 11 is configured to The power consumption priority order of each load generates corresponding switch commands.

In this embodiment, the control chip 11 may be an MCU (Microcontroller Unit; Microcontroller Unit). The Microcontroller Unit, also known as a single-chip microcomputer or a single-chip microcomputer, appropriately reduces the frequency and specifications of the central processing unit, and stores the memory , counter, USB, A/D conversion, UART, PLC, DMA and other peripheral interfaces, and even the LCD driver circuit are integrated on a single chip to form a chip-level computer, which can be controlled in different combinations for different applications. The control chip 11 can generate work instructions to control the power supply module 2 to generate electricity according to the working mode selected by the user, and can also receive external control signals to control the power supply module 2 to generate electricity.

The management module 1 includes a communication module, which is connected with an external terminal and the control chip 11 and is used for transmitting the interactive data between the control chip 11 and the external terminal.

In this embodiment, the communication module includes a wireless communication chip 13 and a wired communication chip 13. The wireless communication chip 13 can perform wireless exchange with an external terminal. Exemplarily, the user can connect the communication module with a mobile phone for wireless connection, and use the mobile phone APP to connect wirelessly. The control command is sent to the control chip 11, and the control chip 11 controls the power supply module 2 to perform corresponding operations after receiving the control command. The wired communication chip 13 can be wired with an external server, and the external server can also send control instructions to the control chip 11 to control the power supply module 2 to adjust according to the real-time operation of the system.

The management module 1 further includes a detection module 12, the detection module 12 is connected to the control chip 11, and the detection module 12 is used to detect the transmission voltage data of the energy storage system and transmit it to the control chip 11 for storage.

In this embodiment, the detection module 12 is composed of a plurality of electric energy meters, each electric energy meter is connected to a different position of the power supply module 2 to measure its real-time voltage value, and can send the real-time voltage value of each position to the control chip 11 for storage, and can also be sent to the user terminal or server through the communication module, and the user judges whether it is necessary to switch the mode or adjust the power generation of the power supply module 2 according to the magnitude of the real-time voltage value.

The power supply module 2 is configured to turn on or turn off the power supply path of one or more loads in the power consumption terminal 3 according to the corresponding switch instruction, so as to realize the power supply priority of the one or more loads. The power supply module 2 is also connected to the grid terminal 4 for generating and supplying voltage to the grid terminal 4 .

In this embodiment, the power supply module 2 is mainly used to generate power supply voltage to supply power to multiple loads at the power consumption end 3. The voltage generation method can be photovoltaic power generation, hydropower generation, diesel power generation, etc. Each load is connected to a separate The power supply path can be switched on and off according to the control command of the management module 1, so as to achieve the effect of selectively supplying power to multiple loads according to the order of power consumption priority. The power supply module 2 can also provide excess electric energy to the grid terminal 4, and the electric energy is sold to the power supply bureau at the electricity price, which improves the income of the user.

The power supply module 2 includes a photovoltaic power generation module 21 and/or a diesel power generation module 22, and the photovoltaic power generation module 21 is used to convert solar energy into electrical energy and transmit it to the power consumption end 3 and the power grid end 4. The diesel power generation module 22 is used to convert biological energy into electrical energy and transmit it to the power consumption end 3 and the grid end 4 .

In this embodiment, the photovoltaic power generation module 21 is a technology that directly converts light energy into electrical energy by utilizing the photovoltaic effect of the semiconductor interface. It is mainly composed of solar panels (components), controllers and inverters, and the main components are composed of electronic components. After the solar cells are connected in series, they can be packaged and protected to form a large-area solar cell module, and then combined with power controllers and other components to form a photovoltaic power generation device. The diesel power generation module 22 is a power supply device that uses the diesel engine as the prime mover and drives the synchronous generator to generate electricity. It is a power generation device with quick start, convenient operation and maintenance, low investment and strong adaptability to the environment. In this embodiment, the photovoltaic power generation module 21 and the diesel power generation module 22 may exist at the same time or one of them may be selected, and the specific selection may be selected according to the user's preference.

The power supply module 2 further includes a battery module 24, the battery module 24 includes one or more energy storage batteries, and the energy storage batteries are used to receive the photovoltaic power generation module 21 and/or the diesel power generation module 22 and transmit it to electrical energy for storage. And transmit electric energy to the electricity end 3 and the grid end 4 .

In this embodiment, the energy storage battery is generally a lithium battery, which generally uses manganese dioxide as the positive electrode material, metal lithium or its alloy metal as the negative electrode material, and uses a non-aqueous electrolyte solution. Effect. The battery module 24 can receive the electric energy transmitted by the grid terminal 4, the photovoltaic power generation module 21 or the diesel power generation module 22 for storage, and release the electric energy when needed to supply power to the load of the user terminal. Exemplarily, when the photovoltaic power generation module 21 generates a large amount of electricity during the day At the time of day, the excess electric energy can be transferred to the energy storage battery for storage, and when the photovoltaic power generation module 21 cannot generate electricity at night, the energy storage battery can release the electric energy for normal use by the user. In this embodiment, a plurality of energy storage batteries may be provided, and the specific number may be adaptively adjusted according to user requirements, which is not limited in this embodiment.

The power supply module 2 further includes a conversion module 23, the conversion module 23 is connected to the battery module 24, and is used for converting alternating current to direct current or converting direct current to alternating current.

In this embodiment, the conversion module 23 may be an AC/DC conversion device such as an inverter. The inverter converts DC power (battery, storage battery) into a constant-frequency constant-voltage or frequency-modulated and voltage-regulated AC power (usually 220V, 50Hz sine wave) converter. It consists of inverter bridge, control logic and filter circuit. The battery module 24 can be directly connected to the load at the user end or the grid end 4 after passing through the conversion module 23 , the energy storage battery is a DC voltage, and the load at the user end or the grid end 4 is an AC voltage.

In this embodiment, the management module 1 can also control the power supply module 2 to supply power to the power consumption terminal 3 according to the selected power consumption mode, and the power consumption mode includes a backup power mode, a photovoltaic self-generation and self-use mode, and a peak-shaving mode. Valley fill mode.

The backup power mode is the mode in which the photovoltaic power generation module 21 , the diesel power generation module 22 and/or the power grid terminal 4 supplies power to the battery module 24 . At this time, it is generally a situation where the power is sufficient for half a day, and the excess power is delivered to the battery module 24 at this time. It is stored in the battery module 24 to ensure that the multiple loads of the power consumption terminal 3 can work normally through the electric energy stored by the battery module 24 when the power grid terminal 4 is powered off or the photovoltaic cannot generate electricity at night. The photovoltaic self-generation and self-use mode is to disconnect the connection with the grid terminal 4, generate photovoltaic power during the day, and discharge the energy storage battery at night to reach the self-sufficient situation of the power consumption terminal 3, and does not need to use the power supply of the grid terminal 4, which saves user costs. In the peak-shaving and valley-filling mode, the photovoltaic power generation module 21 transmits the excess electric energy to the grid terminal 4, and sells the electric energy to the power supply bureau at the electricity price, which improves the income of the user.

This embodiment discloses an energy storage system with an intelligent gateway, which is suitable for connecting with a power consumption end, and the power consumption end includes one or more loads, including: a management module, which is used for according to a predefined one or more loads The corresponding switch instructions are generated in order of the power consumption priorities of the loads; the power supply module is used to turn on or off the power supply path of one or more loads in the power consumption end according to the corresponding switch instructions, so as to realize one or more The power supply priority of the load. The embodiment of the present invention provides an energy storage system with an intelligent gateway, in which the management module controls the power supply module to supply power to multiple loads according to preset priorities according to user requirements, which solves the problem that the existing technology cannot intelligently control the power consumption end. The power consumption of multiple loads realizes the priority power supply to multiple loads at the power consumption end, which improves the user experience.

Embodiment 2

FIG. 3 is a module connection diagram of an intelligently controlled energy storage system according to Embodiment 2 of the present invention, which is suitable for connection with the power consumption end 3, and the power consumption end 3 includes one or more loads. In the case of priority power supply for multiple loads at the power end 3, including: management module 1, power supply module 2 and energy gateway 5, and specifically:

The management module 1 is configured to generate corresponding switch instructions according to the pre-defined power consumption priority order of one or more loads.

Referring to FIG. 4 , FIG. 4 is a circuit diagram of an intelligently controlled energy storage system provided in Embodiment 2 of the present invention, the management module 1 includes a control chip 11 , and the control chip 11 is used for according to a predefined one or more The power consumption priority order of each load generates corresponding switch commands.

The management module 1 includes a communication module, which is connected with an external terminal and the control chip 11 and is used for transmitting the interactive data between the control chip 11 and the external terminal.

The management module 1 further includes a detection module 12, the detection module 12 is connected to the control chip 11, and the detection module 12 is used to detect the transmission voltage data of the energy storage system and transmit it to the control chip 11 for storage.

The power supply module 2 is configured to turn on or turn off the power supply path of one or more loads in the power consumption terminal 3 according to the corresponding switch instruction, so as to realize the power supply priority of the one or more loads. The power supply module 2 is also connected to the grid terminal 4 for generating and supplying voltage to the grid terminal 4 .

The power supply module 2 includes a photovoltaic power generation module 21 and/or a diesel power generation module 22, and the photovoltaic power generation module 21 is used to convert solar energy into electrical energy and transmit it to the power consumption end 3 and the power grid end 4. The diesel power generation module 22 is used to convert biological energy into electrical energy and transmit it to the power consumption end 3 and the grid end 4 .

The power supply module 2 further includes a battery module 24, the battery module 24 includes one or more energy storage batteries, and the energy storage batteries are used to receive the photovoltaic power generation module 21 and/or the diesel power generation module 22 and transmit it to electrical energy for storage. And transmit electric energy to the electricity end 3 and the grid end 4 .

The power supply module 2 further includes a conversion module 23, the conversion module 23 is connected to the battery module 24, and is used for converting alternating current to direct current or converting direct current to alternating current.

In this embodiment, the management module 1 can also control the power supply module 2 to supply power to the power consumption terminal 3 according to the selected power consumption mode, and the power consumption mode includes a backup power mode, a photovoltaic self-generation and self-use mode, and a peak-shaving mode. Valley fill mode.

The energy gateway 5 is connected between the power supply module 2 and the power grid terminal 4 , and is used for disconnecting or conducting the connection between the power supply module 2 and the power grid terminal 4 according to the power supply parameters of the power grid terminal 4 .

In this embodiment, the energy gateway 5 is a physical switch, and its switch state is controlled by the management module 1. When the switch is disconnected, the connection between the power grid terminal 4 and the power consumption terminal 3 is cut off, and when the switch is connected, the power grid terminal 4 is restored. Connection with power consumption terminal 3. When the AC power grid is powered off, the energy gateway 5 can immediately disconnect the energy storage system from the grid terminal 4 to realize off-grid operation and seamless switching. powered by. After the AC power is received, the energy gateway 5 can control the inverter to track the voltage and phase of the grid, restore the connection with the grid terminal 4 in time, and realize grid-connected operation.

The embodiment of the present invention discloses an energy storage system with an intelligent gateway, which is suitable for connecting with a power consumption end, and the power consumption end includes one or more loads, including: a management module, which is used for according to a predefined one or more loads. The power consumption priority order of multiple loads generates corresponding switch instructions; the power supply module is used to turn on or off the power supply path of one or more loads in the power consumption end according to the corresponding switch instructions, so as to realize one or more The power supply priority of each load; the energy gateway, the energy gateway is connected between the power supply module and the power grid terminal, and is used for disconnecting or conducting the power supply module and the power grid according to the power supply parameters of the power grid terminal. connections between terminals. The embodiment of the present invention provides an energy storage system with an intelligent gateway. The management module controls the power supply module to supply power to multiple loads according to preset priorities according to user needs, and can also cut off the power supply when the power grid is powered off. The connection of the power grid end solves the problem of power consumption of multiple loads at the power consumption end in the prior art, realizes the priority power supply to the multiple loads of the power consumption end, and improves the safety and user experience.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. an intelligently controlled energy storage system, suitable for connecting with an electrical end, the electrical end comprising one or more loads, characterized in that comprising: a management module, configured to generate corresponding switching instructions according to the pre-defined power consumption priority order of one or more loads; The power supply module is configured to turn on or off the power supply path of one or more loads in the power consumption end according to the corresponding switch instruction, so as to realize the power supply of one or more loads according to the power consumption priority. 2 . The intelligently controlled energy storage system according to claim 1 , wherein the power supply module is further connected to a power grid terminal for generating and supplying voltage to the power grid terminal. 3 . 3 . The intelligently controlled energy storage system according to claim 1 , further comprising an energy gateway, the energy gateway is connected between the power supply module and the power grid terminal, and is used for according to the power grid. 4 . The power supply parameter of the terminal disconnects or turns on the connection between the power supply module and the grid terminal. 4 . The intelligently controlled energy storage system according to claim 3 , wherein the management module can also control the power supply module to supply power to the power consumption end according to the selected power consumption mode, and the The power consumption modes include backup power mode, photovoltaic self-consumption mode and peak-shaving and valley-filling mode. 5. An intelligently controlled energy storage system according to claim 2, wherein the power supply module comprises a photovoltaic power generation module and/or a diesel power generation module, and the photovoltaic power generation module is used to convert solar energy into electrical energy and transmit it to the electricity consumption end and the grid end, and the diesel power generation module is used to convert biomass energy into electrical energy and transmit it to the electricity consumption end and the grid end. 6 . The intelligently controlled energy storage system according to claim 5 , wherein the power supply module further comprises a battery module, and the battery module comprises one or more energy storage batteries, and the energy storage The battery is used to receive the photovoltaic power generation module and/or the diesel power generation module and transmit it to the electrical energy for storage and to transmit the electrical energy to the electricity consumption end and the grid end. 7 . The intelligently controlled energy storage system according to claim 6 , wherein the power supply module further comprises a conversion module, the conversion module is connected to the battery module and is used to convert alternating current into direct current. 8 . Or convert direct current to alternating current. 8 . The intelligently controlled energy storage system according to claim 1 , wherein the management module comprises a control chip, and the control chip is configured to prioritize power consumption according to one or more pre-defined loads. 9 . The corresponding switch instructions are generated in the order of stages. 9 . The intelligently controlled energy storage system according to claim 8 , wherein the management module comprises a communication module, and the communication module is connected to an external terminal and the control chip for transmitting the Control the interaction data between the chip and the external terminal. 10 . The intelligently controlled energy storage system according to claim 8 , wherein the management module further comprises a detection module, the detection module is connected to the control chip, and the detection module is used for detecting The energy storage system transmits voltage data and transmits it to the control chip for storage.

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