Local controller for industrial and commercial energy storage

Abstract

The invention discloses a local controller for industrial and commercial energy storage, which is characterized in that the local controller for industrial and commercial energy storage comprises a controller body, the controller body comprises a microprocessor, and the microprocessor is provided with an Ethernet communication module, a 485 communication module, a 4G and WIFI communication module, a TF storage module and a touch screen; the 485 communication module is provided with two interfaces, wherein one interface is connected with an anti-countercurrent ammeter and an energy storage ammeter. The problems that industrial and commercial energy storage system equipment is much in mutual communication and complex in communication structure are solved; the functions of charging and discharging intelligent management, data statistics, recording, display and the like of the local energy storage system are realized; and wireless data uploading is also realized, and the energy storage system can be controlled and information can be checked in a plurality of ways such as local and remote ways.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage controllers, and in particular to a local controller for industrial and commercial energy storage. Background Art

[0002] With the global attention paid to clean energy and smart grid technology, the industrial and commercial energy storage market has developed rapidly, and battery energy storage systems are playing an increasingly important role. In industrial and commercial energy storage systems, EMS, as an important link in the middle, usually acts as an independent device, playing a role in real-time monitoring and intelligent control of industrial and commercial energy storage. Real-time monitoring requires data to be transmitted to the cloud platform, and data viewing and analysis are performed through the background. It cannot be viewed in real time locally, and it is also impossible to independently control it locally. Some have added touch screens locally, which can view some data in real time locally. When local control is required, it is difficult to coordinate with EMS, and there are control conflicts.

[0003] In general, the local monitoring touch screen and EMS are usually two independent devices, which increases the system cost; the local touch screen and MES only communicate with the energy storage inverter, which makes it difficult to achieve communication coordination, the communication structure is complex, and the function expansion is limited; it is relatively difficult to operate, debug, and view information on the energy storage system locally. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a local controller for industrial and commercial energy storage, which solves the problem of multiple communications between industrial and commercial energy storage system equipment and complex communication structure; realizes the local energy storage system charging and discharging intelligent management, data statistics, recording, display and other functions; also realizes wireless data uploading, and the energy storage system can be controlled and information viewed through multiple local and remote channels.

[0005] In order to solve the above technical problems, the present invention provides a local controller for industrial and commercial energy storage, characterized in that it includes a controller body, the controller body includes a microprocessor, and the microprocessor is provided with an Ethernet communication module, a 485 communication module, a 4G and WI FI communication module, a TF storage module and a touch screen; the 485 communication module is provided with two interfaces, one of which is connected to an anti-backflow meter and an energy storage meter.

[0006] Furthermore, it includes an energy storage system, which is a single-unit structure and includes an energy storage inverter and a battery management system.

[0007] Furthermore, the controller body is directly connected to the energy storage converter via an Ethernet communication module.

[0008] Furthermore, it includes an energy storage system, which is a multi-unit structure. The energy storage system includes a switch and no less than 2 energy storage inverters, each of the energy storage inverters is connected to the switch, and each of the energy storage inverters corresponds to a battery management system.

[0009] Furthermore, the 485 communication of the battery management system is connected in parallel and connected to an interface of another 485 communication module of the controller body.

[0010] Furthermore, the anti-backflow meter, energy storage meter, energy storage converter and battery management system are all uploaded to the cloud platform via wireless communication.

[0011] Furthermore, the 485 communication module adopts MODBUS-RTU communication protocol.

[0012] The beneficial effects of the present invention are as follows: in terms of intelligent control, a variety of control modes are realized, and the following can be switched freely: 1. Local control: in the case of multiple units in parallel, single unit control or simultaneous control of multiple units can be realized; 2. Peak shaving and valley filling: charging and discharging are performed according to the local peak and valley time periods, and the charging and discharging power is controlled according to the load; 3. Fixed power control: in the peak and valley time periods, the charging and discharging power is set by local or remote settings; 4. Demand control: the controller automatically adjusts the charging and discharging strategy according to the user's power load.

[0013] In terms of data statistics, the charging and discharging power statistics and revenue statistics are realized: the charging and discharging power statistics mainly include daily charging and discharging amount and cumulative charging and discharging statistics; the revenue statistics mainly include daily revenue, monthly revenue, annual revenue and cumulative revenue. The statistics are also stored.

[0014] In terms of fault alarm protection, the controller has a real-time alarm function, which issues alarms for events such as equipment failure or communication failure, displays current fault information, and allows for review of stored historical fault information. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall module of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of a single energy storage system of the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of multiple energy storage systems of the present invention. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] Reference Figures 1 to 3 As shown, it includes a controller body, which includes a microprocessor. The microprocessor is provided with an Ethernet communication module, a 485 communication module, a 4G and WI FI communication module, a TF storage module and a touch screen; the 485 communication module is provided with two interfaces, one of which is connected to an anti-backflow meter and an energy storage meter.

[0025] Embodiment 1:

[0026] The energy storage system comprises an energy storage system, which is a single unit structure, and comprises an energy storage converter (hereinafter referred to as PCS) and a battery management system (hereinafter referred to as BMS), and the controller body is directly connected to the energy storage converter through an Ethernet communication module;

[0027] Embodiment 2:

[0028] It includes an energy storage system, which is a multi-unit structure. The energy storage system includes a switch and no less than 2 energy storage inverters. Each of the energy storage inverters is connected to the switch. Each of the energy storage inverters corresponds to a battery management system. The 485 communication of the battery management system is connected in parallel and connected to the interface of another 485 communication module of the controller body. The anti-backflow meter, energy storage meter, energy storage inverter and battery management system are all uploaded to the cloud platform through wireless communication. The 485 communication module adopts the MODBUS-RTU communication protocol.

[0029] When in use, the controller body is based on a microprocessor, including an Ethernet communication module interface, two-way 485 communication module interfaces, 4G and WI FI communication module interfaces, a touch screen, and a TF storage module hardware structure. The Ethernet communication module interface communicates with the PCS through a network protocol to achieve data interaction; the 485 communication module interface uses the MODBUS-RTU communication protocol, one of which communicates with the BMS to read battery information, and the other communicates with the electric meter to read grid power and other information to achieve intelligent control of energy storage system charging and discharging; 4G and WI FI enable the cloud platform to upload data of industrial and commercial energy storage systems to achieve remote detection and control; the touch screen enables local visualization and real-time display of data such as PCS, BMS, and temperature control, and enables display of historical curves such as charging and discharging power curves, SOC curves, voltage, current, and temperature, as well as local control operations of charging and discharging of energy storage systems; TF storage enables real-time data storage of power, SOC, voltage, current, and other data of industrial and commercial energy storage systems, as well as data storage of fault information.

[0030] When applied to a single energy storage system, the controller is directly connected to the PCS via Ethernet for communication. One 485 is connected to two meters, and the other 485 is connected to the BMS. The collected information of the meters, PCS, BMS, etc. is uploaded to the cloud platform via wireless.

[0031] When applied to multiple energy storage systems in parallel, each PCS is first connected to the switch, and then connected to the controller through the switch. The controller reads the information of all PCSs through the switch rotation training method. The 485 communications of all BMSs are connected in parallel to the 485 interface of the controller. The other 485 communication with the meter and the wireless communication are the same as those of a single energy storage system.

[0032] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A local controller for industrial and commercial energy storage, characterized in that: It includes a controller body, which includes a microprocessor, and the microprocessor is provided with an Ethernet communication module, a 485 communication module, a 4G and WIFI communication module, a TF storage module and a touch screen; The 485 communication module is provided with two interfaces, one of which is connected to the anti-backflow meter and the energy storage meter.

2. The local controller for industrial and commercial energy storage according to claim 1, characterized in that: It includes an energy storage system, which is a single-unit structure and includes an energy storage converter and a battery management system.

3. The local controller for industrial and commercial energy storage according to claim 1, characterized in that: The controller body is directly connected to the energy storage converter via an Ethernet communication module.

4. The local controller for industrial and commercial energy storage according to claim 1, characterized in that: It includes an energy storage system, which is a multi-unit structure. The energy storage system includes a switch and no less than 2 energy storage inverters. Each of the energy storage inverters is connected to the switch, and each of the energy storage inverters corresponds to a battery management system.

5. The local controller for industrial and commercial energy storage according to claim 2 or 4, characterized in that: The 485 communication of the battery management system is connected in parallel and connected to the interface of another 485 communication module of the controller body.

6. The local controller for industrial and commercial energy storage according to claim 2 or 4, characterized in that: The anti-backflow meter, energy storage meter, energy storage converter and battery management system are all uploaded to the cloud platform via wireless communication.

7. The local controller for industrial and commercial energy storage according to claim 1, characterized in that: The 485 communication module adopts MODBUS-RTU communication protocol.

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