Energy management device and energy management system

Abstract

The present disclosure provides an energy management device and an energy management system, and relates to the technical field of power electronics. In the energy management device, the control board and the function board are respectively connected to the corresponding connectors on the back plate, and the communication processing module is arranged on the back plate. The first sub-port of the control board and the first sub-port of the function board are respectively connected to the communication processing module through the corresponding hard-wired link, so that the control board and the function board can realize the interaction of the protection signal and the control instruction signal through the switching function of the communication processing module, and the control board can realize the monitoring function of at least one power unit through the function board. In the present disclosure, the communication between the function board and the control board is no longer limited by the number of connection lines between them, thereby reducing the demand for the number of I / O ports of the corresponding connectors on the control board and the back plate, and relieving the pressure of the number of I / O ports.

Description

Technical Field

[0001] This disclosure relates to the field of power electronics technology, and in particular to an energy management device and an energy management system. Background Technology

[0002] Energy management devices with a plug-in chassis design, such as upper-level controllers used in the new energy field to achieve algorithm layer scheduling and efficient communication execution, typically have various connectors on their internal backplanes, such as power supply slots, analog sampling slots, digital detection and output slots, fiber optic repeater slots, other function slots, and core control slots. In some scenarios, the power supply slots and core control slots will adopt a redundant dual-backup design.

[0003] The core control slot is used to insert the control board, while the other slots are used to insert function boards with corresponding functions. Function boards of different functions all require direct I / O (Input / Output) connections with the control board to achieve fast control and rapid feedback. The hardwired links connecting these I / O ports are implemented through connectors on the backplane. However, the limited number of I / O ports on the control board and the corresponding connectors on the backplane significantly restricts the number of hardwired links. Summary of the Invention

[0004] In view of the above problems, this disclosure provides an energy management device and an energy management system to reduce the number of I / O ports required for corresponding connectors on the control board and backplane. The specific solution is as follows:

[0005] The first aspect of this disclosure provides an energy management device, comprising: a backplane, a control board, and at least two functional boards; wherein,

[0006] The control board is used to control at least one power unit to operate via the function board;

[0007] The control board is connected to the first connector on the back panel, and the function board is connected to the second connector on the back panel; a communication processing module is provided on the back panel, and the communication processing module is connected to the first connector and the second connector respectively;

[0008] The control board and the function board each include a first sub-port, and each first sub-port is connected to the communication processing module through a corresponding adapter hardwired link; the adapter hardwired link is used to transmit at least protection signals and control command signals.

[0009] In one possible implementation, the control board and the function board also include basic signal interfaces;

[0010] At least one of the basic signal interfaces of the functional board is connected to the basic signal interface of the control board via a corresponding direct hardwire link;

[0011] Alternatively, the basic signal interfaces of at least two of the functional boards are connected to the basic signal interfaces of the control board via a direct-connect hardwired bus.

[0012] In one possible implementation, the control board and the function board further include communication interfaces;

[0013] The communication interfaces of at least two of the functional boards are respectively connected to the communication interface of the control board through corresponding independent communication links.

[0014] In one possible implementation, the control board and the function board transmit interconnect signals through the communication processing module; the direct-connect hardwired link or the direct-connect hardwired bus is used to transmit basic signals; and the independent communication link is used to transmit communication signals.

[0015] The interconnection signal, the basic signal, and the communication signal have different transmission priorities.

[0016] In one possible implementation, the control board and the function board transmit interconnect signals through the communication processing module; the interconnect signals include a first type of signal, which includes the protection signal and the control command signal; the switching hardwired link is used to transmit the first type of signal.

[0017] Alternatively, the interconnection signal may include the first type of signal and the second type of signal, wherein the timing requirements of the second type of signal are lower than those of the first type of signal; the switching hardwire link is used to transmit the first type of signal and the second type of signal in parallel.

[0018] In one possible implementation, the control board includes a second sub-port, which is connected to the communication processing module via a switching communication link.

[0019] In one possible implementation, the function board includes a second sub-port, which is connected to the communication processing module via a switching communication link.

[0020] In one possible implementation, the control board and the function board transmit interconnect signals through the communication processing module; the interconnect signals include a first type of signal and a second type of signal, the first type of signal including the protection signal and the control command signal, and the timing requirements of the second type of signal being lower than those of the first type of signal;

[0021] The switching hardwire link is used to transmit the first type of signal, and the switching communication link is used to transmit the second type of signal; or, the switching hardwire link is used to transmit the first type of signal and the second type of signal in parallel.

[0022] In one possible implementation, the communication processing module is integrated into the backplane, or the communication processing module is connected to the backplane via a relay board.

[0023] A second aspect of this disclosure provides an energy management system, comprising: at least one energy management device as described in the first aspect or any implementation thereof.

[0024] In one possible implementation, the number of energy management devices is greater than 1, and at least one of the energy management devices has a functional board that is an interconnection communication board;

[0025] The interconnection communication board is used to enable communication between the control board in the energy management device and other energy management devices.

[0026] The energy management device disclosed herein includes: a backplane, a control board, and at least two function boards. The control board and function boards are respectively connected to corresponding connectors on the backplane, and a communication processing module is provided on the backplane. The first sub-ports of the control board and the first sub-ports of the function boards are respectively connected to the communication processing module via corresponding adapter hardwired links. This allows the control board and each function board to exchange at least protection signals and control command signals through the adapter function of the communication processing module, thereby enabling the control board to monitor at least one power unit through the function boards. In this disclosure, communication between the function boards and the control board is no longer limited by the number of connection lines between them, thereby reducing the requirement for the number of I / O ports on the control board and the corresponding connectors on the backplane, alleviating the pressure on the number of I / O ports. Attached Figure Description

[0027] The features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and elements and actual parts are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic diagram of a first structure of an energy management device provided in an embodiment of the present disclosure;

[0029] Figure 2 This is a second structural schematic diagram of an energy management device provided in an embodiment of the present disclosure;

[0030] Figure 3A third structural schematic diagram of the energy management device provided in this embodiment of the disclosure;

[0031] Figure 4 This is a fourth structural schematic diagram of the energy management device provided in the embodiments of this disclosure;

[0032] Figure 5 for Figure 3 A schematic diagram of a specific connection method under the structure shown;

[0033] Figure 6 This is a fifth structural schematic diagram of an energy management device provided in an embodiment of the present disclosure;

[0034] Figure 7 for Figure 6 A schematic diagram of a specific connection method under the structure shown;

[0035] Figure 8 This is a schematic diagram of a first type of connection relationship of an energy management system provided in an embodiment of the present disclosure;

[0036] Figure 9 This is a schematic diagram of a second connection relationship of an energy management system provided in an embodiment of the present disclosure;

[0037] Figure 10 A schematic diagram of a third connection relationship of an energy management system provided in an embodiment of this disclosure;

[0038] Figure 11 This is a schematic diagram of a fourth connection relationship of an energy management system provided in an embodiment of the present disclosure;

[0039] Figure 12 This is a schematic diagram of a fifth connection relationship for an energy management system provided in an embodiment of this disclosure. Detailed Implementation

[0040] The embodiments of this disclosure are described below with reference to the accompanying drawings. The terminology used in the Description of Embodiments section of this disclosure is for illustrative purposes only and is not intended to limit the scope of this disclosure.

[0041] The embodiments of this disclosure are described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure. Those skilled in the art will understand that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0042] The terms “first,” “second,” etc., used in this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the description of embodiments of this disclosure. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of units is not necessarily limited to those units, but may include other units not expressly listed or inherent to those processes, methods, products, or apparatuses.

[0043] Energy management equipment using a plug-in chassis design can house various functional boards. Each functional board needs to transmit different signals to the control board. For example, a voltage sampling board needs to transmit overvoltage signals, a current sampling board needs to transmit overcurrent signals, and a fiber optic repeater board needs to transmit fast fault signals, fast blocking signals, and synchronization signals. Each functional board needs to connect to the control board via a corresponding hardwired link on the backplane. A single hardwired link may require multiple connecting lines to transmit the corresponding signals. Each connecting line needs to connect to the I / O port of the corresponding connector on the backplane of both the control board and the corresponding functional board. However, the number of I / O ports on the control board and the corresponding connector on the backplane cannot be increased indefinitely, thus limiting the number of connecting lines between each functional board and the control board, which is detrimental to rapid fault handling in the system.

[0044] This disclosure provides an energy management device to reduce the number of I / O ports required for corresponding connectors on the control board and backplane. The specific solution is as follows:

[0045] like Figure 1 As shown, the energy management device includes: a back panel 100, a control panel 101, and at least one ( Figure 1 (Using multiple examples as examples) Function board 102; where:

[0046] The control board 101 is used to control the operation of the power conversion structure through the function board 102; the power conversion structure can be the main power circuit in the power converter or the main power circuit in the power conversion system, and may specifically include at least one power unit, which is not limited here.

[0047] Function board 102 is used to perform any of the following functions: acquire the operating parameters of the power conversion structure and generate detection information based on the operating parameters and send it to control board 101; forward control information from control board 101 to the power conversion structure; communicate with other devices; and supply power to backplane 100. The operating parameters can refer to voltage or current, the detection information can refer to overvoltage or overcurrent signals, and the control information can refer to PWM (Pulse Width Modulation) signals; these are not limited here, but can be found in relevant technologies.

[0048] Specifically, the control board 101 is a major control core of the energy management equipment. It can send data and commands to certain function boards 102, and can also read data from certain function boards 102, thereby enabling the control board 101 to monitor the power conversion structure through the various function boards 102. Each function board 102 is a variety of expansion modules within the energy management equipment, including but not limited to voltage sampling boards (or voltage detection boards), current sampling boards (or current detection boards), DIDO (Digital Input / Digital Output) boards (or DIO interface boards), AIAO (Analog Input / Analog Output) boards (or AIO analog boards), fiber optic repeater boards, encoder detection boards, and other modules. Some function boards 102 can also be used as power supply boards, solely for power supply functions. The backplane 100 is responsible for supplying the power provided by the power supply boards to the control board 101 and all other function boards 102.

[0049] The control board 101 is connected to the first connector (not shown in the figure) on the back panel 100, and the function board 102 is connected to the second connector (not shown in the figure) on the back panel 100; that is, the control board 101 and the function board 102 can be connected to the connection line on the back panel 100 through the corresponding connectors, and the specific implementation of each connector includes, but is not limited to, a slot.

[0050] In addition, a communication processing module 103 is provided on the backplane 100, which can perform routing and logic combination functions on the received signals. The connection method between the communication processing module 103 and the connection line on the backplane 100 is not limited, and details can be found below. In practical applications, the communication processing module 103 can be an FPGA (Field-Programmable Gate Array) or an MCU (Microcontroller Unit), or other discrete circuits or integrated circuits; no limitation is made here, depending on the specific application environment, and all are within the protection scope of this disclosure.

[0051] The control board 101 and the function board 102 each include a corresponding first sub-port 1. The communication processing module 103 includes at least two first sub-ports 1, and the communication processing module 103 is connected to the first connector and the second connector, respectively. The first sub-ports 1 of the control board 101 and the first sub-ports 1 of the function board 102 are connected to the communication processing module 103 via corresponding adapter hardwire links 11 on the backplane 100. Specifically, they can be connected to the corresponding first sub-ports 1 on the communication processing module 103, as shown in the connection diagram. Figure 1 The thick solid line with an arrow indicates the direction in which signal transmission is permitted.

[0052] The first sub-port 1 of the control board 101 and the first sub-port 1 of the function board 102 are respectively used to transmit a first type of signal with the communication processing module 103 through the corresponding hard-wired transfer link 11. The first type of signal can be a protection signal such as an overvoltage signal, an overcurrent signal, or a rapid fault signal output by the function board 102, or a control command signal output by the control board 101. That is, the hard-wired transfer link 11 is used to transmit at least the protection signal and the control command signal. For example, the function board 102 can transmit the protection signal such as the overvoltage signal, the overcurrent signal, or the rapid fault signal to the communication processing module 103, which will then forward it to the control board 101. The control board 101 can also send control command signals to each function board 102 through the communication processing module 103.

[0053] In practical applications, control board 101 and function board 102 can transmit some signals with low timing requirements through the communication processing module 103, referred to as interconnect signals. These interconnect signals can be some of the signals that implement the main functions of function board 102, including the first type of signals mentioned above. That is, the interconnect signals between control board 101 and function board 102 can be routed and forwarded through the communication processing module 103, no longer limited by the number of connection lines between control board 101 and function board 102, thereby reducing the requirement for the number of I / O ports on control board 101 and the first connector, and alleviating the pressure on the number of I / O ports on control board 101 and the first connector.

[0054] The energy management device provided in this embodiment, through the above principle, can not only realize the control function of the control board 101 over all function boards 102, as well as the fault feedback function of all function boards 102, but also alleviate the pressure on the corresponding number of I / O ports.

[0055] Furthermore, traditional solutions limit the functional expansion of hardwired links between control boards and function boards. When the number and function of function boards are switched, the transmission signals and hardwired links are often switched, requiring a redesign of individual boards or circuits after the hardware design is completed. However, the energy management device provided in this embodiment, through the communication processing module 103, can adapt to function boards 102 with different functions and can quickly expand the number of interconnected signals, enabling efficient fault handling and interconnection of the energy management device.

[0056] Furthermore, the communication processing module 103 can be programmed with different methods to adapt to the type of connected functional board 102. For example, let's take an FPGA as an example to illustrate this:

[0057] Both the control board 101 and the function board 102 are connected to the FPGA via a hard-wired link 11. Different combined functions can be implemented through the FPGA program. For example, the fast fault signals of multiple function boards 102 can be randomly aggregated into one or more signals and directly fed back to the control board 101 through the FPGA.

[0058] In traditional solutions, the number of function boards for different functions varies. For example, there may be one, three, or four fiber optic function boards. When these boards aggregate the rapid fault signals to the control board, different DIP switch methods may be required, making hardware design, production, and on-site operations very complicated. In special scenarios, it may even be necessary to redesign the entire set of energy management equipment boards.

[0059] In this embodiment, the communication processing module 103 can utilize the logic processing capabilities of the FPGA to program different programs on the FPGA according to different interconnection requirements. For example, when different combinations of fault feedback and processing are required, different FPGA programs can be programmed to quickly adapt to different fault processing logic requirements. This embodiment does not require logical combination and selection of interconnection signals in hardware, nor does it require redesigning the board. This method of modifying the FPGA program allows for arbitrary combinations of corresponding interconnection methods between the control board 101 and different functional boards 102, making the application of energy management equipment more intelligent and greatly expanding the application adaptability of the system.

[0060] Based on the previous embodiment, the interconnection signals can be further divided into a first type of signal and a second type of signal according to their timing requirements. The first type of signal includes the protection signal and the control command signal, while the timing requirements of the second type of signal are lower than those of the first type of signal. In this case, the aforementioned transition hardwire link 11 can realize the parallel transmission of the first type of signal and the second type of signal.

[0061] In practical applications, the control board 101 may also include a second sub-port 2, and the communication processing module 103 may also be provided with at least one second sub-port 2. The second sub-port 2 of the control board 101 can be connected to the communication processing module 103 via a communication link 12. Specifically, it can be connected to the corresponding second sub-port 2 on the communication processing module 103, as shown in the connection diagram. Figure 2 The dashed line with arrows between the central control board 101 and the communication processing module 103 indicates the direction in which signal transmission is permitted.

[0062] In one example, the switching communication link 12 may include two connection lines, such as the transmit TX connection and receive RX connection of a UART (Universal Asynchronous Receiver / Transmitter); or, the switching communication link 12 may also use SPI (Serial Peripheral Interface) or other communication methods, depending on the specific application environment.

[0063] In practical applications, the second sub-port 2 may specifically include a pair of I / O ports, which may be led out from an input pin and an output pin of the main chip in the control board 101, but are not limited to this.

[0064] For the control board 101, the first sub-port 1 and the second sub-port 2 together constitute the switching signal interface. This switching signal interface can transmit interconnected signals with the communication processing module 103 through the connecting lines on the backplane 100. When the actual conditions such as the number of connecting lines in the switching hardwire link 11 and the logical combination processing of the communication processing module 103 cannot meet the transmission requirements of the interconnected signals, such as when the function board 102 is added to the energy management device to realize extended applications, the first type of signal can be transmitted through the switching hardwire link 11 and the second type of signal can be transmitted through the switching communication link 12. However, when the above actual conditions can meet the transmission requirements of the interconnected signals, the first type of signal and the second type of signal can be transmitted in parallel through the switching hardwire link 11, while the switching communication link 12 is only reserved as a backup.

[0065] That is, the switching communication link 12 serves as a low-speed communication link between the control board 101 and the communication processing module 103, used for transmitting the second type of signal. For example, the control board 101 can communicate with the communication processing module 103 through the switching communication link 12, and then use software to read the internal state of the communication processing module 103 to obtain the interconnection status signal of the function board 102. Alternatively, it can send commands to the communication processing module 103 through software, which are then forwarded to the corresponding function board 102. In other words, the control board 101 and the communication processing module 103 can achieve software communication reading and / or control command sending through the switching communication link 12.

[0066] Similarly, the function board 102 may also include a second sub-port 2, and the second sub-port 2 of the function board 102 is also connected to the communication processing module 103 through the corresponding adapter communication link 12. Specifically, it can be connected to the corresponding second sub-port 2 on the communication processing module 103, and the connection relationship is as follows: Figure 2 The dashed line with arrows indicates the direction of permitted signal transmission between the function board 102 and the communication processing module 103. That is, a corresponding adapter communication link 12 can also be set between the function board 102 and the communication processing module 103. This adapter communication link 12 is used to extend the application when the connection line of the hardwired link 11 between the function board 102 and the communication processing module 103 cannot meet the application requirements.

[0067] Based on the above embodiments, the energy management device can be as follows: Figure 3 (in) Figure 1 As shown in the example (taking the addition of a communication link 12 between the control board 101 and the communication processing module 103 as an example based on the structure shown), the control board 101 and the function board 102 also include corresponding basic signal interfaces 3; and at least one function board 102 ( Figure 3 (Taking all functional boards 102 as an example for demonstration) The basic signal interface 3 is connected to the basic signal interface 3 of the control board 101 through the corresponding direct hardwire link 131, and the connection relationship is as follows: Figure 3 The thin solid line with an arrowhead indicates the direction in which signal transmission is permitted.

[0068] Some signals that require fast response between the control board 101 and some or all of the function boards 102 have extremely high timing requirements, such as basic signals like wave blocking commands and synchronization commands, and cannot be delayed by the communication processing module 103. Therefore, these basic signals can be transmitted by the direct hard-wire link 131 that directly interconnects the control board 101 and the corresponding function board 102.

[0069] In this embodiment, the control board 101 and the function board 102 retain only a very small number of basic signals used for fast control for transmission via direct interconnect hardwire links 131. Other signals with low timing requirements, such as the aforementioned interconnect signals, can be connected to the communication processing module 103 via corresponding adapter hardwire links 11 and handed over to the communication processing module 103 for routing processing. In addition, given the number of connections in the adapter hardwire links 11, when the combinational logic of the communication processing module 103 cannot meet the signal transmission requirements between all function boards 102 and the control board 101, some less important interconnect signals, such as the aforementioned second type of signals, can be transmitted via the aforementioned adapter communication links 12.

[0070] In practical applications, if the control board 101 needs to be connected to at least two function boards 102 via direct hardwired links 131, the energy management device can be configured as follows: Figure 3 As shown, the basic signal interfaces 3 of each functional board 102 are respectively connected to different basic signal interfaces 3 of the control board 101 through corresponding direct hardwire links 131; or, when there are at least two functional boards 102 whose basic signal interfaces 3 are connected to the basic signal interfaces 3 of the control board 101, the basic signal interfaces 3 of each functional board 102 can also be configured to be connected to the same basic signal interface 3 of the control board 101 through a direct hardwire bus 132, as shown in the diagram. Figure 4 The thin solid line with arrows indicates the direction in which signal transmission is permitted. Both methods can achieve direct interconnection between the control board 101 and the function board 102, thereby enabling the transmission of the aforementioned basic signals. Therefore, the appropriate connection method can be selected according to the actual application environment requirements, and no limitation is made here.

[0071] In practical applications, both the first sub-port 1 and the basic signal interface 3 mentioned above can include at least one I / O port, and each I / O port can be led out from the corresponding input pin or output pin of the main chip on the board; specifically, Figure 3 In the direct-connect hardwired link 131 shown, one end of each connecting wire is connected to one of the I / O ports in the basic signal interface 3. Figures 1 to 4 One end of each connecting line in the hardwired adapter 11 shown is connected to one of the I / O ports in the first sub-port 1; this depends on the specific application environment requirements and is not limited here.

[0072] In addition, in practical applications, the communication processing module 103 can be directly integrated into the backplane 100, or it can be connected to the backplane 100 through a relay board; as long as it can be connected to the connection line on the backplane 100, it can be determined according to its application environment.

[0073] Figure 5The various links in this energy management device are illustrated by example, including:

[0074] The direct-connect hardwired bus 132 between the basic signal interface 3 of control board 101 and the basic signal interfaces 3 of all function boards 102 is used to transmit basic signals. These basic signals may specifically include global synchronization and status signals, which may include: carrier synchronization signal (carrier_sync), base synchronization signal (base_sync), and fault summary signal (fault_all). That is, three signals are directly interconnected and transmitted between control board 101 and function boards 102. In practical applications, the number and types of signals directly interconnected and transmitted between control board 101 and all function boards 102 are not limited to... Figure 5 The form shown is merely one optional example; furthermore, it is not required that all function boards 102 have a direct hardwired bus 132 connection to the control board 101, for example, the power supply board does not require this connection. Furthermore, Figure 5 This example demonstrates how the basic signals from the control board 101 to each function board 102 are transmitted via a direct-connect hardwire bus 132. In practical applications, this method can also be used. Figure 3 The multiple direct-connect hardwire links 131 shown are used for transmission, but this is not limited here.

[0075] The first sub-port 1 of control board 101 and the first sub-port 1 of function board 102 respectively transmit first-type signals to communication processing module 103 through corresponding adapter hardwire links 11. These first-type signals may specifically include protection signals (including overvoltage signals, overcurrent signals, and rapid fault signals) and control command signals. In practical applications, the adapter hardwire link 11 can specifically adopt general 16-bit transmission, that is, the adapter hardwire link 11 can be a 16-bit parallel data path. This is only one optional example, and the number of connecting lines of the adapter hardwire link 11 is not limited. Communication processing module 103 can directly transmit the first-type signals, or it can perform logical processing on them before transmission, such as performing fast logical processing such as AND, OR, and NOT operations; this is not limited here and depends on the specific application environment.

[0076] For example, each functional board 102 transmits protection signals such as overvoltage signals, overcurrent signals, and rapid fault signals to the communication processing module 103 via corresponding hard-wired links 11. After performing combinational logic processing on these signals, the communication processing module 103 transmits the summarized information back to the control board 101 via the hard-wired link 11 between the control board 101 and the communication processing module 103. The control board 101 can also send control command signals and other commands to the communication processing module 103 via corresponding hard-wired links 11, and the communication processing module 103 performs logical combination and outputs the results to each functional board 102.

[0077] In one example, each functional board 102 uses two fixed bits (e.g., io[1:0] or io[3:2] in io[15:0]) in the 16-bit parallel data path between itself and the communication processing module 103 to upload fast fault signals. After receiving each fast fault signal, the communication processing module 103 can directly transmit each fast fault signal in parallel through the 16-bit parallel data path between itself and the control board 101 according to the data bits corresponding to each functional board 102, or it can transmit the summary result through specific data bits of the 16-bit parallel data path between itself and the control board 101 after performing OR logic processing; it can be determined according to its specific application environment, and all are within the protection scope of this disclosure.

[0078] Alternatively, the function board 102 can also transmit the second type of signal to the communication processing module 103 via the corresponding hard-wired transfer link 11. The communication processing module 103 then performs timing logic processing on the second type of signal, converting it into serial data. If the number of connection lines of the hard-wired transfer link 11 between the communication processing module 103 and the control board 101 is sufficient, for example, if there are spare higher data bits in the 16-bit parallel data path between the communication processing module 103 and the control board 101, the second type of signal can be transmitted through these higher data bits. Alternatively, if the number of connection lines of the hard-wired transfer link 11 between the communication processing module 103 and the control board 101 is insufficient, for example, if there are no spare data bits in the 16-bit parallel data path between the communication processing module 103 and the control board 101, the second type of signal can interact through the hard-wired transfer link 12 between the control board 101 and the communication processing module 103. In this case, the control board 101 can read the timing logic combination of the second type of signal inside the communication processing module 103 through the hard-wired transfer link 12.

[0079] Similarly, corresponding transfer communication links 12 can also be set between each function board 102 and the communication processing module 103. For example, when the number of connection lines of the transfer hard wire link 11 between the function board 102 and the communication processing module 103 cannot meet the application requirements, the interaction of the second type of signal can be realized through this transfer communication link 12.

[0080] Figure 5 The arrows on the signal lines shown indicate the permitted direction of signal transmission, and each signal line may include at least one connecting line. Additionally, Figure 5The number and implementation of basic signals described herein are merely illustrative and not intended to be limiting. As long as the interconnection signals between the control board 101 and the function board 102 can interact through the communication processing module 103, the pressure on the number of I / O ports of the control board 101 and the first connector can be alleviated. Furthermore, by retaining only a very small number of basic signals for direct interconnection, while the connection and rapid processing of other interconnection signals are handled through the communication processing module 103 using different procedures, the system's intelligence can be maximized, and rapid adaptation can be achieved when replacing the function board 102 or handling faults.

[0081] Based on the above embodiments, such as Figure 6 (in) Figure 4 As shown in the example (based on the structure shown), in this energy management device, the control board 101 and the function board 102 may each include a corresponding communication interface 4; moreover, at least two function boards 102 ( Figure 6 (Taking all functional boards 102 as an example for demonstration) The communication interfaces 4 of each board are connected to the communication interfaces 4 of the control board 101 through corresponding independent communication links 14, as shown in the figure. Figure 6 The dashed lines with arrows between the central control board 101 and each function board 102 are shown, with the arrows indicating the direction in which signal transmission is permitted.

[0082] In practical applications, all function boards 102 can be configured to communicate with the control board 101, and each can use a corresponding independent communication link 14; or, some function boards 102 can be retained to only perform power supply functions; it depends on the specific application environment, and all are within the protection scope of this disclosure.

[0083] In this embodiment, each control board 101 and each corresponding functional board 102 is provided with an independent communication link 14. The control board 101 can communicate with these functional boards 102 simultaneously to read data and send data and commands at the same time. Unlike the traditional one-to-many communication bus, the control board 101 in this embodiment can send commands and data to each functional board 102 simultaneously, and can also receive data from each functional board 102 simultaneously. This results in extremely fast communication speed and extremely high synchronization of each functional board 102, ensuring the synchronization of commands and data. This enables rapid control of each functional board 102 and allows each functional board 102 to achieve rapid fault feedback, greatly enhancing the control performance of the system.

[0084] exist Figure 5 Based on the situation shown. Figure 7An independent communication link 14 between the control board 101 and the function board 102 is shown. Specifically, it can be used to transmit communication signals such as parallel synchronous transmit / receive signals. These parallel synchronous transmit / receive signals may include: a transmit clock signal txclk, a transmit enable signal txen, a transmit data signal such as a 4-bit parallel signal txdata[3:0], a receive clock signal rxclk, a receive enable signal rxen, and a receive data signal such as a 4-bit parallel signal rxdata[3:0]. Figure 7 The arrows on the signal lines shown indicate the directions in which signal transmission is permitted, and each signal line may include at least one connecting line.

[0085] In practical applications, these independent communication links 14 can adopt parallel communication or other conventional communication methods, such as LVDS (Low-Voltage Differential Signaling), SERDES (Serializer / Deserializer), and various serial communication methods, to ensure that the control board 101 and the corresponding functional board 102 can achieve independent communication connections, thus realizing communication... letter With increased speed and reduced data latency, commands and data acquisition from the control board 101 to the underlying units can be completed in a shorter time, making it adaptable to the requirements of higher application scenarios.

[0086] for Figure 7 As shown in the above embodiments, the control board 101 and the function board 102 transmit interconnect signals through the communication processing module 103, the direct-connect hardwired bus 132 is used to transmit basic signals, and the independent communication link 14 is used to transmit communication signals; in addition, Figure 3 The direct hardwire link 131 shown is also used to transmit basic signals; based on this, the transmission priorities of the interconnect signal, basic signal and communication signal can be set to be different.

[0087] In practical applications, taking into account both the real-time and timing requirements of signals, the transmission priorities of various signals can be set from high to low as follows: basic signals, first-class signals, and communication signals.

[0088] As described in the above embodiments, when the interconnection signal includes a second type of signal, the transmission priority of the second type of signal is after the first type of signal and before the communication signal; therefore, when the energy management device is equipped with a transfer communication link 12, the various links are sorted from high to low according to the transmission priority of the transmitted signals, specifically as follows: direct hard wire link 131 or direct hard wire bus 132, transfer hard wire link 11, transfer communication link 12, and independent communication link 14.

[0089] This embodiment enables hierarchical transmission of various signals in the energy management device, thereby saving the number of I / O ports of the control board 101 and the first connector while meeting real-time and timing requirements. Furthermore, all types of links are implemented by connecting lines on the backplane 100, and the number of connecting lines required for each can be determined according to the signal requirements they transmit, enabling intelligent applications.

[0090] In practical applications, different functional boards connect to the backplane via different connectors, such as through different card slots, while simultaneously communicating and interconnecting with the control board. Because of their different functions, these functional boards transmit different signals to the control board, such as voltage and current detection signals, DIDO extended signals, AIAO extended signals, and fiber optic repeater extended signals. These differences exist not only in signal type but also in the type of data links used. However, the functions of the different card slots are fixed. While some fiber optic repeater boards may have identical card slot wiring sequences, the card slots of all functional boards in the entire energy management device are not compatible.

[0091] The fixed functions of the functional board slots limit their usage. For example, a voltage sampling board slot can only accommodate voltage sampling boards and cannot be interchanged with DIDO boards, AIAO boards, or fiber optic functional boards, making it inconvenient to use. Furthermore, with the expansion requirements of different application scenarios, such as high-power grid simulators, direct connection of medium-voltage energy storage, and SVG (Static Var Generator) scenarios, the number of fiber optic repeater boards in different complete systems varies. Special scenarios may also require multiple functional boards of the same type, in which case energy management devices with fixed slot functions are no longer suitable.

[0092] Therefore, in this embodiment, at least two second connectors on the backplate have the same wiring sequence.

[0093] In practical applications, all connectors on these connecting function boards can be configured to use the same wiring sequence. That is, for each connector on the backplane, only the first connector used to connect the control board uses a specially defined wiring sequence, while the wiring sequence of all other second connectors used to connect the function boards is completely identical. In one example, if there are independent communication links and direct-connect hardwired buses (or direct-connect hardwired links) between all function boards and the control board, and if there are adapter hardwired links between the control board and all function boards and the communication processing module, the interconnection signals transmitted between all function boards and the communication processing module can be configured to be completely identical. The power supply for all function boards is supplied from the backplane by the corresponding second connector, and the wiring sequence is set at the same position on the second connector to ensure that the interface at the same position on all second connectors is the power supply port.

[0094] At this point, for any second connector, it can be used to connect to a voltage sampling board, an AIAO board, or other types of functional boards; it only needs to ensure that the wiring sequence of all second connectors is completely consistent, for example, for Figure 7 The structure shown allows all second connectors to be wired as follows: communication interface 4 connects to independent communication link 14, and connects to direct-connect hardwire bus 132 (or... Figure 4 The basic signal interface 3 of the direct-connect hardwired link 131 shown connects to the first sub-port 1 of the adapter hardwired link 11, the second sub-port 2 connects to the adapter communication link 12, and the power interface is connected to the backplane power supply; this is only an example and is not limited to this. In practical applications, the communication interface 4 may include at least one communication port, the basic signal interface 3 may include at least one I / O port, the first sub-port 1 may include at least one I / O port, the second sub-port 2 may include at least one I / O port or at least one communication port, and the power interface may include at least one power port. The functions on the function board are handled by the function board itself, which means that any second connector can connect to different types of function boards.

[0095] The energy management device provided in this embodiment has second connectors with consistent wiring sequence on its backplane, which can freely connect to function boards with different functions, thus enabling adaptive connection for function boards with different functions. Moreover, there is no limitation on the number or function of function boards, which can maximize intelligent application; if multiple function boards of the same type are required, this embodiment can increase the number of function boards of the required type according to actual needs, and can even set all second connectors to connect to the same type of function board to achieve rapid adaptation.

[0096] Of course, in practical applications, some functional boards can be retained to use different wiring sequences. For example, the power board can use a different wiring sequence. In this case, the second connector with the same wiring sequence can still achieve adaptive connection for functional boards with different functions.

[0097] Another embodiment of this disclosure also provides an energy management system, such as Figure 8 As shown, it includes: at least one energy management device 10. For clarity, Figure 8 The connection relationships of the internal boards of the energy management device 10 are omitted here. The specific structure, internal links and working principle of the energy management device 10 can be found in the above embodiments, and will not be repeated here.

[0098] This energy management system can be used to control the operation of a power conversion structure, which can be the main power circuit in a power converter or the main power circuit in a power conversion system. Specifically, it can include at least one power unit; for example, when the power conversion structure is a three-phase inverter circuit, each phase circuit can include multiple levels of power units (such as...). Figure 8 (The power units of phase A, phase B, or phase C shown are 1-n power units).

[0099] In low-power applications such as power grid simulators and medium- and high-voltage frequency converters, the energy management system only needs to include one energy management device because the number of cascaded power units 20 is small. For example... Figure 8 As shown, an energy management device 10 can control a three-phase n-level power unit 20 through 3n pairs of optical fibers, wherein each pair of optical fibers is used to control one power unit 20.

[0100] like Figure 8 As shown, the energy management device 10 may include a control board and various functional boards, which may be: a power supply board, a DIDO board, an AIAO board, a current detection board, a voltage detection board, fiber optic repeater board A, fiber optic repeater board B, and fiber optic repeater board C. The power supply board supplies power to the backplane; the DIDO board is used for inputting and outputting digital signals; the AIAO board is used for acquiring and outputting analog signals; the current detection board is used to acquire the current of the power conversion structure and generate an overcurrent signal as detection information to be transmitted to the control board; the voltage detection board is used to acquire the voltage of the power conversion structure and generate an overvoltage signal as detection information to be transmitted to the control board; fiber optic repeater board A is used to transmit control signals for power units 1 to n in phase A; fiber optic repeater board B is used to transmit control signals for power units 1 to n in phase B; and fiber optic repeater board C is used to transmit control signals for power units 1 to n in phase C.

[0101] In the energy management device 10, the control board and each functional board transmit interconnect signals through the communication processing module on the backplane, which can alleviate the pressure of the number of I / O ports of the control board and its connectors. Moreover, in different application scenarios, only the program of the communication processing module needs to be adjusted to quickly realize the interface interconnection of the new system. Compared with the fixed I / O port connection method of traditional energy management devices, it demonstrates great intelligence.

[0102] As described in the above embodiments, in this energy management device 10, a corresponding switching communication link can also be set between the control board and the communication processing module to realize software communication reading and control command issuance; similarly, a corresponding switching communication link can also be set between each functional board and the communication processing module. It can also be configured that at least one functional board is connected to the control board through a corresponding direct hardwire link; or, at least two functional boards are connected to the control board through a direct hardwire bus to realize direct transmission of basic signals. In addition, the control board can use a corresponding independent communication link with at least one functional board to improve the communication rate and the synchronization of the corresponding functional boards. Furthermore, the wiring sequence of each second connector can be set to be consistent to realize adaptive connection for functional boards with different functions.

[0103] In practical applications, the number of energy management devices in this energy management system can also be greater than one. In this case, the role assignments between the energy management devices can be configured in various ways, such as:

[0104] In one example, such as Figure 9 As shown, each energy management device 10 consists of: a main controller and at least one sub-controller (e.g., ...). Figure 9 The diagram shows the A-phase controller, B-phase controller, and C-phase controller; each sub-controller is used to control the operation of the power conversion structure; the power conversion structure includes at least one power unit (such as...). Figure 9 The power units shown are (phase A, phase B, or phase C, level 1-n) 20; each sub-controller is communicatively connected to the main controller. The specific topology of each power unit 20 is not limited and depends on its specific application environment.

[0105] Figure 9 In the structure shown, the functional boards in the main controller may include: a communication interface board, a DIDO board, an AIAO board, and an interconnection communication board. The communication interface board is used to communicate with other devices and is responsible for communication between the device and external systems, such as with a host computer, a touch screen, and a background monitoring system. The interconnection communication board is used to realize communication interaction between the control board and other energy management devices. The functional boards in each sub-controller may include: a current detection board, a voltage detection board, fiber optic repeater board #1, fiber optic repeater board #2, and fiber optic repeater board #3. Each fiber optic repeater board is connected to the corresponding power unit 20 through a corresponding fiber optic cable. Each sub-controller is connected to the main controller through a corresponding fiber optic cable. Normally, the main controller and the sub-controllers can communicate through their respective control boards connected by fiber optic cables (path ① shown in the figure). Alternatively, if the fiber optic ports on the main controller's control board are insufficient, communication can be established through the interconnection communication board of the main controller and the control boards of the sub-controllers connected by fiber optic cables (path ② shown in the figure). This allows the main controller to control all power units 20 through the sub-controllers.

[0106] Figure 9 The phase-separated control shown can be applied to high-power grid simulators, SVG, direct-connection of energy storage, AIDC (Artificial Intelligence Data Center), and other application scenarios. In these scenarios, due to the large number of optical fibers, the number of functional boards implementing optical fiber connections in a single energy management device is limited. Therefore, a different approach can be adopted. Figure 9 The diagram illustrates a phase-separated control method. In practical applications, other control methods can also be used; this is merely an example.

[0107] In another example, each energy management device may be: a main controller and at least one slave controller; the main controller and each slave controller are used to control the operation of the power conversion structure; each slave controller is communicatively connected to the main controller.

[0108] Figure 10 The energy management system is illustrated using two energy management devices 10 as an example. Each functional board in each energy management device 10 may include: a power board, a DIDO board, an AIAO board, a current detection board, a voltage detection board, a fiber optic repeater board, and an interconnection communication board. The main controller and the slave controller control the power conversion structure through their respective fiber optic repeater boards. Each power conversion structure includes at least one power unit, such as a three-phase circuit, where each phase circuit includes one or at least two power units, without limitation. Typically, the main controller and the slave controller can communicate through their respective control boards connected to optical fibers (path ① in the figure). Alternatively, if the fiber optic ports on their control boards are insufficient, they can communicate through their interconnection communication boards connected to optical fibers (path ② in the figure).

[0109] Furthermore, in a master-slave control structure, the number of slave controllers in each energy management device is not limited, such as... Figure 11 As shown, the energy management system can also adopt a master-slave structure. Furthermore, the master controller and slave controllers can communicate via fiber optic connections through their respective control boards (path ① in the figure), or, if their control boards lack sufficient fiber optic ports, they can communicate via their interconnection communication boards (path ② in the figure).

[0110] In practical applications, in a master-slave architecture, the connection method between the energy management devices is not limited. For example, the master controller can communicate with each slave controller separately (e.g., ...). Figure 11 As shown in the image), or each energy management device can use a daisy-chain communication method (such as...). Figure 12 (as shown), and Figure 12In the scenario shown, adjacent energy management devices can also choose path ① or path ② to establish a communication connection, or other communication methods from related technologies, which are not limited here.

[0111] If the power of each power conversion structure is small, its corresponding energy management device 10 can be integrated into a power converter. Multiple power conversion structures can be connected in parallel through a master-slave control method.

[0112] This embodiment does not limit the specific structure of the power conversion structure and the power conversion system. As long as the energy management system adopts the energy management equipment described in the above embodiment, the number of I / O ports of the control board and its connectors can be saved, and intelligent adaptation can be achieved by adjusting the program in the communication processing module under different application scenarios.

[0113] Similar or identical parts between the various embodiments in this disclosure can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and relevant parts can be referred to the description of the method embodiments. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment solution according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0114] Those skilled in the art will also recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0115] The above description of the disclosed embodiments shows that the features described in the various embodiments of this disclosure can be substituted for or combined with each other, enabling those skilled in the art to implement or use this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy management device, characterized in that, include: Back panel, control board, and at least two function boards; among which, The control board is used to control at least one power unit to operate via the function board; The control board is connected to a first connector on the back panel, and the function board is connected to a second connector on the back panel; a communication processing module is provided on the back panel, and the communication processing module is connected to the first connector and the second connector respectively; The control board and the function board each include a first sub-port, and each first sub-port is connected to the communication processing module through a corresponding adapter hardwired link; the adapter hardwired link is used to transmit at least protection signals and control command signals; The communication processing module can be programmed with different methods to achieve combinations of interconnection methods between the control board and different function boards.

2. The energy management device according to claim 1, characterized in that, The control board and the function board also each include a basic signal interface; At least one of the basic signal interfaces of the functional board is connected to the basic signal interface of the control board via a corresponding direct hardwire link; Alternatively, the basic signal interfaces of at least two of the functional boards are connected to the basic signal interfaces of the control board via a direct-connect hardwired bus.

3. The energy management device according to claim 2, characterized in that, The control board and the function board also each include a communication interface; The communication interfaces of at least two of the functional boards are respectively connected to the communication interface of the control board through corresponding independent communication links.

4. The energy management device according to claim 3, characterized in that, The control board and the function board transmit interconnection signals through the communication processing module; the direct-connect hardwired link or the direct-connect hardwired bus is used to transmit basic signals; the independent communication link is used to transmit communication signals. The interconnection signal, the basic signal, and the communication signal have different transmission priorities.

5. The energy management device according to any one of claims 1 to 4, characterized in that, The control board and the function board transmit interconnection signals through the communication processing module; the interconnection signals include a first type of signal, which includes the protection signal and the control command signal; the adapter hardwire link is used to transmit the first type of signal. Alternatively, the interconnection signal may include the first type of signal and the second type of signal, wherein the timing requirements of the second type of signal are lower than those of the first type of signal; the switching hardwire link is used to transmit the first type of signal and the second type of signal in parallel.

6. The energy management device according to claim 1, characterized in that, The control board includes a second sub-port, which is connected to the communication processing module via a communication transfer link.

7. The energy management device according to claim 1, characterized in that, The function board includes a second sub-port, which is connected to the communication processing module via a communication transfer link.

8. The energy management device according to claim 6 or 7, characterized in that, The control board and the function board transmit interconnection signals through the communication processing module; the interconnection signals include a first type of signal and a second type of signal, the first type of signal includes the protection signal and the control command signal, and the timing requirements of the second type of signal are lower than those of the first type of signal; The switching hardwire link is used to transmit the first type of signal, and the switching communication link is used to transmit the second type of signal; or, the switching hardwire link is used to transmit the first type of signal and the second type of signal in parallel.

9. The energy management device according to any one of claims 1 to 4, characterized in that, The communication processing module is integrated on the backplane, or the communication processing module is connected to the backplane via a relay board.

10. An energy management system, characterized in that, include: At least one energy management device as described in any one of claims 1 to 9.

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