PCS board

Abstract

To maintain performance of a remote monitoring board and improve maintainability.SOLUTION: A PCS board 30A for an energy storage system includes: a housing 80; a power conversion unit 40A housed in the housing 80; and a control unit 50A which is housed in the housing 80 and controls the power conversion unit 40A. A remote monitoring board 100A which remotely monitors a storage battery board 20A for storing energy is disposed on an outer surface of the housing 80.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a PCS panel used in an energy storage system connected to a power grid. [Background technology]

[0002] The introduction of energy storage systems is being promoted to achieve efficient energy management. When the demand for electricity is lower than the supply, the energy storage system charges a storage bank with surplus electricity, and when the demand for electricity exceeds the supply, the system discharges the storage bank to make up for the power shortage. Patent Document 1 is a document disclosing technology related to energy storage systems. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-65595 Summary of the Invention [Problem to be solved by the invention]

[0004] A remote monitoring panel may be installed to remotely monitor the battery panel. Because the remote monitoring panel is a low-voltage system, if it is housed in a high-voltage PCS panel, it will be affected by noise and heat, making maintaining performance an issue. PCS panels may require certification for handling high-voltage electricity, and if the remote monitoring panel is housed in a PCS panel, only those certified to handle high-voltage electricity can perform maintenance on the remote monitoring panel.

[0005] An object of the present invention is to improve the performance maintenance and maintainability of a remote monitoring panel. [Means for solving the problem]

[0006] A PCS panel according to one embodiment of the present invention is a PCS panel for an energy storage system, and includes a housing, a power conversion unit housed in the housing, and a control unit housed in the housing and controlling the power conversion unit, and a remote monitoring panel that remotely monitors a battery panel that stores energy is disposed on the outer surface of the housing. [Effects of the Invention]

[0007] This technology can maintain the performance of the remote monitoring panel and also improve maintainability. [Brief explanation of the drawings]

[0008] [Figure 1] Perspective view of an energy storage system [Figure 2] Energy storage system block diagram [Figure 3A] Power conversion unit block diagram [Figure 3B] Power conversion unit block diagram [Figure 4] Perspective view of PCS panel [Figure 5] Perspective view of PCS panel [Figure 6] Figure 5 viewed from direction A [Figure 7] Perspective view of the remote monitoring panel [Figure 8] Remote monitoring panel block diagram [Figure 9] Remote monitoring panel block diagram DETAILED DESCRIPTION OF THE INVENTION

[0009] (Outline of this embodiment) (1) A PCS panel according to one embodiment of the present invention is a PCS panel for an energy storage system, and includes a housing, a power conversion unit housed in the housing, and a control unit housed in the housing and controlling the power conversion unit, and a remote monitoring panel that remotely monitors a battery panel that stores energy is disposed on the outer surface of the housing. In the PCS panel described in (1), any configuration other than the above is optional and may be any configuration.

[0010] The PCS panel according to one embodiment of the present invention houses a high-voltage power conversion unit and control unit, and is equipped with switching devices and various filter circuits, which can become sources of noise and heat. By installing a low-voltage remote monitoring panel on the exterior of the PCS panel, the effects of noise and heat can be reduced. This allows the performance of the remote monitoring panel to be maintained. PCS panels may require certification for handling high-voltage electricity. If the remote monitoring panel is housed inside the PCS panel, only personnel with high-voltage certification can perform maintenance on the remote monitoring panel. To ensure efficient operation of PCS panels, improved maintainability is essential, and the inventors have thoroughly investigated this issue. This configuration, in which the remote monitoring panel is installed on the exterior of the PCS panel and the storage box is separate, allows for easy maintenance of the remote monitoring panel without such restrictions (such as high-voltage certification). This lack of constraints allows for the number, frequency, and timing of maintenance to be freely set, preventing PCS panel failures and contributing to maintaining the product's lifespan. As a result, this contributes to promoting efficient operation of PCS panels. When the remote monitoring panel is placed on the outside of the PCS panel, there are not many restrictions on the size of the remote monitoring panel, so there is also an advantage in that there are fewer restrictions on the number and size of the components that can be accommodated.

[0011] In order to reduce the effects of noise and heat from the switching devices and various filter circuits housed in the PCS panel, it is possible to install a remote monitoring panel away from the PCS panel. However, if the remote monitoring panel is installed far from the PCS panel, the signal lines connecting the remote monitoring panel to the PCS panel will be long. This raises concerns that the signal lines will act as antennas and be affected by noise. By installing the remote monitoring panel on the outside of the PCS panel, the signal lines will be short, reducing the effects of noise caused by the antenna effect and maintaining the performance of the remote monitoring panel.

[0012] (2) The PCS board according to (1) above, comprising a metal housing and a circuit board housed in the housing, The PCS panel may include a first interface for connecting to a remote monitoring device that remotely monitors the battery panel, and a second interface for connecting to a higher-level device that is housed in the housing and controls the PCS panel. In the PCS panel described in (2), any configuration other than the above is optional and may be any configuration.

[0013] According to the PCS panel described in (2), the shielding effect of the metal housing of the remote monitoring panel can suppress the effects of noise generated inside the PCS panel, thereby suppressing communication failures in the first and second interfaces. Therefore, good communication conditions can be maintained between the host device and the remote monitoring device. Because the two interfaces are built into the housing of the remote monitoring panel, the number of parts can be reduced and the system configuration can be simplified compared to when these are installed on separate panels. Furthermore, maintenance and inspection of communication equipment (interfaces, etc.) for both remote monitoring communication and host device communication can be performed by working on the remote monitoring panel, which has the advantage of improving maintainability.

[0014] (3) In the PCS panel described in (2) above, the PCS panel may include a monitoring unit that monitors the status of the battery panel, and the first interface may include at least a NIC connected to the monitoring unit and a network repeater connected to the NIC. The network repeater is a communication device such as a router that relays between different networks. In the PCS panel described in (3), any configuration other than the above is optional and may be any configuration.

[0015] According to the PCS panel described in (3), the remote monitoring device can remotely monitor the status of the battery panel by communicating with the monitoring unit of the PCS panel via the network repeater and NIC. The NIC and network repeater are components that frequently fail. By placing these frequently failing components on the outside of the housing as a separate panel (remote monitoring panel) from the PCS panel, part replacement can be easily performed.

[0016] (4) In the PCS board described in (3) above, the NIC may be connected to the network repeater via a HUB. A HUB is a line concentrator that connects multiple cables to enable mutual communication (network construction). In the PCS board described in (4), any configuration other than the above is optional and may be any configuration.

[0017] According to the PCS panel described in (4), by connecting the remote monitoring panel installed on another PCS panel to the HUB, the network repeater can be shared among multiple remote monitoring panels. This reduces the number of network repeaters used. By consolidating network-related components into one remote monitoring panel, it is expected that maintainability will also improve.

[0018] (5) In the PCS board described in any one of (1) to (4) above, the PCS board may house an input / output unit in a part of the housing, and the remote monitoring board may be disposed at a position that avoids the part of the PCS board that houses the input / output unit. In the PCS board described in (5), any configuration other than the above is optional and may be any configuration.

[0019] In some cases, a bus duct (a wiring conductor) for input / output is installed near the input / output unit on the PCS panel. With the PCS panel described in (5), workers can perform maintenance on the remote monitoring panel without being hindered by the bus duct for input / output. This makes the remote monitoring panel easy to maintain. The bus duct is one example.

[0020] (6) In the PCS panel described in any one of (1) to (5) above, a removable maintenance panel may be installed in the housing, and the remote monitoring panel may be located away from the panel relative to the PCS panel. In the PCS panel described in (6), any configuration other than the above is optional and may be any configuration.

[0021] According to the PCS panel described in (6), the panel can be removed from the PCS panel without being obstructed by the remote monitoring panel, which makes the PCS panel easy to maintain.

[0022] <Embodiment 1> 1. Description of Energy Storage System 10 FIG. 1 is a perspective view of an energy storage system 10. The energy storage system 10 is a system that is connected to a power grid 1 and adjusts the supply and demand of electricity. The power grid 1 may be that of an electric power company, or it may be an independent power grid that is made up of the stand-alone operation output of a large power conditioner.

[0023] 2 is a block diagram of the energy storage system 10. In this embodiment, three energy storage systems 10A to 10C are installed in parallel. Since the energy storage systems 10A to 10C have the same structure, the configuration of the energy storage system 10A will be described as a representative.

[0024] The energy storage system 10A includes a battery panel 20A and a PCS panel 30A. PCS is an abbreviation for Power Conditioning System.

[0025] The battery panel 20A is for energy storage and, in this embodiment, is installed in parallel with the PCS panel 30A. The battery panel 20A includes a power storage bank 21, an individual monitoring unit 23A, and a housing 25 that houses these. The power storage bank 21 is composed of a plurality of power storage cells connected in series. Various types of cells can be used as the power storage cells as long as they are capable of storing electricity (capable of repeated charging and discharging), such as non-aqueous electrolyte secondary battery cells such as lithium ion secondary batteries, capacitors, NAS battery cells, and redox flow battery cells. The power storage bank 21 may be configured as a single bank or multiple banks. In this embodiment, it is configured as two banks.

[0026] The individual monitoring unit 23A monitors the state of the battery panel 20A. The monitored items are the voltage (total voltage of the power storage banks 21, voltage of each power storage cell), current (total current of the power storage banks 21), temperature, etc. of the battery panel 20A. These monitored items can be measured by sensors.

[0027] The battery panel 20A is connected to the PCS panel 30A via a switch SW. In this embodiment, a plurality of (three) battery panels 20A are connected in parallel to one PCS panel 30A.

[0028] The PCS panel 30A includes a power conversion unit 40A, a control unit 50A, an integrated monitoring unit 55A, an input / output unit 70A, and a housing 80 that houses these. The input / output unit 70A includes an input breaker 71 and an output breaker 72.

[0029] The power conversion unit 40A is connected to the battery panel 20A via an input breaker 71, and is connected to the interconnection line L1 of the power system 1 via an output breaker 72. As shown in FIG. 3A , the power conversion unit 40A includes a DC / DC converter 41, a link capacitor 42, an inverter 43, a current sensor 44, an LC filter 45, and a switch 46.

[0030] The power conversion unit 40A is a bidirectional power converter capable of reverse conversion (DC to AC) and forward conversion (AC to DC).

[0031] 3A, the power conversion unit 40A performs an inverse conversion operation (DC to AC) to discharge the battery panel 20A and supply AC power to the power grid 1. Also, the power conversion unit 40A performs a forward conversion operation (AC to DC) to charge the battery panel 20A with AC power from the power grid 1, as shown in FIG. 3B.

[0032] In this embodiment, a plurality of power conversion units 40A are provided in parallel to ensure the capacity of the PCS board 30A.

[0033] The integrated monitoring unit 55A receives data on the status of each battery panel 20A from the individual monitoring unit 23A of the battery panel 20A, and monitors the status of the battery panel 20A. In this embodiment, as shown in Fig. 2, three battery panels 20A are connected to the PCS panel 30A, and the integrated monitoring unit 55A monitors the status of the three battery panels 20A.

[0034] The control unit 50A includes, for example, a CPU (Central Processing Unit) and a memory for storing various data. The control unit 50A controls the power conversion unit 40A in response to commands from a higher-level device 150 such as an EMS (Energy Management System) and adjusts the supply and demand of power.

[0035] Specifically, when the demand for electricity is lower than the supply, the excess electricity is used to charge the battery panel 20A of the energy storage system 10A, and when the demand for electricity exceeds the supply, the power shortage is compensated for by discharging the battery panel 20A of the energy storage system 10A.

[0036] As described above, the energy storage system 10A can improve the efficiency of energy use and contribute to energy conservation by exchanging power with the power grid 1 and adjusting supply and demand.

[0037] As shown in FIGS. 1 and 2, this system includes three energy storage systems 10A to 10C, and control units 50A to 50C of the energy storage systems 10A to 10C are connected by a communication line L2.

[0038] The three control units 50A to 50C cooperate through mutual communication to control the entire energy storage systems 10A to 10C. By adjusting the supply and demand of electricity using the three parallel energy storage systems 10A to 10C, it is possible to adjust three times the amount of energy compared to a single system.

[0039] The control system is not limited to the above, and an integrated control unit that integrates the three control units 50A to 50C may be separately installed. The energy storage systems 10A to 10C may be entirely controlled via the three control units 50A to 50C in response to commands from the integrated control unit.

[0040] 2. PCS panel 30A configuration As shown in Figures 4 and 5, the PCS panel 30A includes a metal housing 80. The housing 80 is box-shaped and includes a front wall 81, a rear wall 82, a first side wall 83, a second side wall 84, a top wall 85, and a bottom wall 86. As shown in Figure 5, the front wall 81 is a door that can be opened and closed. Like the front wall 81, the rear wall 82 is also a door that can be opened and closed.

[0041] Hereinafter, the width direction of PCS board 30A is referred to as the X direction, the front-to-rear direction as the Y direction, and the height direction as the Z direction. Fig. 6 is a view of housing 80 as seen from direction A in Fig. 5, with first side wall 83 omitted. Housing 80 has housing areas F1 and F2 on both sides of a central portion F0 in the center of the Y direction, which are used as a boundary to house units 40A, 50A, and 70A.

[0042] Two cooling fans 91 and 92 are installed on the top wall 85 of the housing 80, corresponding to the two housing areas F1 and F2.

[0043] In this embodiment, a first housing area F1 in the front part of the housing (on the right in FIG. 6) can house, from bottom to top, an input / output unit 70A, a control unit 50A, and a power conversion unit 40A. The first housing area F1 can house four tiers of power conversion units 40A in the Z direction, and in the example of FIG. 6, the power conversion units 40A are arranged in the first and fourth tiers.

[0044] The second housing area F2 at the rear of the housing (left side in FIG. 6) can house six tiers of power conversion units 40A in the Z direction, and in the example of FIG. 6, the power conversion units 40A are arranged on the first and sixth tiers.

[0045] The central portion F0 of the housing 80 is a space for wiring, where bus bars B and cables K are arranged. The bus bars B are for power lines, and the cables K are for signal lines. The central portion F0 forms a circulation path, and the air inside the housing circulates through the central portion F0.

[0046] As shown in Figures 4 and 5, the first side wall 83 is composed of three panels, specifically a front panel 83A, a middle panel 83B, and a rear panel 83C. The middle panel 83B is for maintenance purposes and is removable. For example, it is removable by screw fastening. Of course, it may be removable by other methods. When the middle panel 83B is removed, the center portion F0 of the housing is exposed, allowing the state of the wiring inside the housing to be checked.

[0047] 3. Configuration of the remote monitoring panel 100 The remote monitoring panel 100A is used for remote monitoring of the battery panel 20A and remote operation of the PCS panel 30A, and is installed on the outer surface of the housing 80 of the PCS panel 30A. A remote monitoring function for the PCS panel 30A may be added to the remote monitoring panel 100A. In this embodiment, as shown in FIGS. 4 and 5, the remote monitoring panel 100A is located at the top of the rear panel 83C of the first side wall 83, avoiding the front part of the housing where the input / output unit 70A is located. The battery panel 20A is arranged on the second side wall 84 opposite the first side wall 83.

[0048] Remote monitoring panels 100B and 100C are also installed in similar positions on the outer surfaces of the other PCS panels 30B and 30C. Since the basic structure of the remote monitoring panels 100A to 100C is the same, the configuration will be explained below using the remote monitoring panel 100A as an example.

[0049] 7 is a perspective view of the remote monitoring panel 100A (the front wall 106 of the housing 105 is omitted). The remote monitoring panel 100A has a structure in which electronic components such as a circuit board 111, a conversion board 113, a PLC 115, an SPD 117, and a circuit breaker 119 are housed in a metal housing 105. The SPD 117 is a component that protects the remote monitoring panel 100A from lightning surges, and the PLC (programmable logic controller) 115 is an optional component that can be implemented according to the user's requests, specifications, etc.

[0050] The remote monitoring panel 100A can be subjected to maintenance and the like by removing the front wall 106 of the housing 105. The front wall 106 may be configured to be removable with screws or the like, or may be configured like an openable door.

[0051] The remote monitoring panel 100A is a low-voltage system, containing electronic components (first interface 120A and second interface 130A described below) with a lower operating voltage than the power conversion unit 40A and control unit 50A contained in the PCS panel 30A.

[0052] 8 is a block diagram of the remote monitoring panel 100A. The remote monitoring panel 100A includes a first interface 120A and a second interface 130A.

[0053] The first interface 120A includes a first NIC 121, a first HUB 123, an LTE router 125, and an MC (media converter) 127. NIC stands for network interface card. The LTE router 125 is a network repeater. The network repeater may be wireless or wired.

[0054] The first NIC 121 is electrically connected to the integrated monitoring unit 55A of the PCS board 30A. The first NIC 121 and the integrated monitoring unit 55A may be connected by providing holes in the housing walls of the two boards 30A and 100A and passing signal lines through the holes, or by providing a detour path that bypasses the housing walls. The same applies to the electrical connection between the second NIC 131 and the control unit 50A of the PCS board 30A.

[0055] The first NIC 121 is connected to an LTE router 125 via a first HUB 123. An antenna 129 is connected to the LTE router 125. The first HUB 123 is a line concentrator for connecting the first NIC 121 of each of the remote monitoring panels 100A to 100C to the LTE router 125.

[0056] The first interface 120A is for remote communication between the integrated monitoring unit 55A and the remote monitoring device 150. The remote monitoring device 150 can remotely monitor the state of the battery panel 20A by acquiring data related to the state of the battery panel 20A from the integrated monitoring unit 55A.

[0057] 8 is a communication line for remote monitoring (an optical fiber line in this embodiment). The first interface 120B of the remote monitoring panel 100B is connected to the MC 127 of the remote monitoring panel 100A via the communication line L2-1, and is capable of communicating with the remote monitoring device 150 via the first HUB 123, LTE router 125, and antenna 129 of the remote monitoring panel 100A. By using the first HUB 123 as an intermediary, it is possible to connect not only the first NIC 121 of the remote monitoring panel 100A, but also the first NIC 121 of the other remote monitoring panels 120B and 120C to the LTE router 125.

[0058] In this embodiment, the remote monitoring device 150 can remotely monitor the status of the battery panel 20B by acquiring data on the status of the battery panel 20B from the integrated monitoring unit 55B of the PCS panel 30B. In a similar manner, the battery panel 20C can also be remotely monitored.

[0059] The MC (media converter) 127 is a converter of signals to be transmitted. In this embodiment, it converts between optical signals for optical fiber lines and electrical signals for metal lines. If signal conversion is not required, the MC 127 may be omitted. The same applies to the MCs 135 and 137.

[0060] The second interface 130A is configured from a second NIC 131, a second HUB 133, and two MCs (media converters) 135 and 137.

[0061] The second NIC 131 is connected to the control unit 50A of the PCS board 30A. The second NIC 131 is connected to two MCs (media converters) 135 and 137 via a second HUB 133. The MC 135 is connected to a higher-level device 160 via a communication line (an optical fiber line in this embodiment).

[0062] The second interface 130A is for communication between the control unit 50A and the host device 160. The control unit 50A can receive commands from the host device 160 regarding power control.

[0063] 8 is a communication line (optical fiber line in this embodiment) for power control. The second interface 130B of the remote monitoring panel 100B is connected to the MC 137 of the remote monitoring panel 100A via the communication line L2-2, and is capable of communicating with the higher-level device 160 via the second HUB 133 and MC 135 of the remote monitoring panel 100A.

[0064] By providing the second HUB 133, it becomes possible to connect not only the second NIC 131 of the remote monitoring panel 100A but also the second NICs 131 of the other remote monitoring panels 120B and 120C to the higher-level device 160.

[0065] Therefore, the control unit 50B can receive commands related to power control from the host device 160. In a similar manner, the control unit 50C can also receive commands related to power control from the host device 160.

[0066] 4.Effects The PCS panel 30A houses the high-voltage power conversion unit 40A and control unit 50A, which are sources of noise and heat. By installing the low-voltage remote monitoring panel 100A on the outer surface of the PCS panel 30A, the effects of noise and heat can be suppressed, allowing the performance of the remote monitoring panel 100A to be maintained.

[0067] The PCS panel 30A may require certification for handling high voltage electricity, and if the remote monitoring panel 100A is housed inside the PCS panel 30A, only someone with certification for handling high voltage electricity can perform maintenance on the remote monitoring panel 100A. In this configuration, the remote monitoring panel 100A is installed on the exterior of the PCS panel 30A, so maintenance of the remote monitoring panel 100A can be performed without such restrictions (certification for handling high voltage electricity), resulting in excellent maintainability.

[0068] The lack of restrictions makes it possible to freely set the number of maintenance times, frequency, and timing, which helps prevent failures in the PCS panels 30A to 30C and contributes to maintaining the product lifespan. As a result, it contributes to promoting efficient operation of the PCS panels 30A to 30C. When the remote monitoring panels 100A to 100C are placed on the outer surfaces of the PCS panels 30A to 30C, there are not many restrictions on the size of the remote monitoring panels 100A to 100C, which means that there are also fewer restrictions on the number and size of components that can be accommodated, which is an advantage.

[0069] The shielding effect of the metal housing 105 of the remote monitoring panels 100A to 100C can suppress the effects of noise generated inside the PCS panel, thereby preventing communication failures at the first interface 120A and the second interface 130A. As a result, good communication conditions can be maintained with the host device 150 and with the remote monitoring device 160.

[0070] The remote monitoring panel 100A incorporates two interfaces 120A and 130A, which reduces the number of parts and simplifies the system configuration compared to when these are provided on separate panels.

[0071] The first NIC 121 and the LTE router 125 are components that frequently fail. By storing these components, which frequently fail, on a panel (remote monitoring panel 100A) separate from the PCS panel 30A, it is possible to easily replace the components. The same applies to the second NIC 131 and the MCs 137 and 135.

[0072] In this embodiment, the LTE router 125 and the antenna 129 can be shared among the multiple remote monitoring panels 100A to 100C. This makes it possible to reduce the number of LTE routers 125 and antennas 129 used. By consolidating network-related components into one remote monitoring panel 100A, it is expected that maintainability will also improve.

[0073] The remote monitoring panel 100A is disposed at a position relative to the PCS panel 30A, avoiding the front portion where the input / output unit 70A is housed. Specifically, it is disposed at the rear portion of the PCS panel 30A.

[0074] By positioning the remote monitoring panel 100A away from the input / output unit 70A, if an input / output bus duct (not shown; wiring conductor) is installed in front of the PCS panel, workers can perform maintenance on the remote monitoring panel 100A without being hindered by it. This makes the remote monitoring panel 100A easy to maintain.

[0075] Furthermore, since the remote monitoring panel 100A also avoids the intermediate panel 83B, there is also the advantage that when checking the inside of the housing, the intermediate panel 83B can be removed from the housing 80 without being obstructed by the remote monitoring panel 100A.

[0076] <Other embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments, for example, are also included within the technical scope of the present invention.

[0077] (1) In the above embodiment, the configuration in which three energy storage systems 10A to 10C are installed side by side is shown as shown in Figures 1 and 2. However, the present technology is not limited to this and can be applied to a single energy storage system.

[0078] (2) In the above embodiment, the PCS panels 30A to 30C are provided adjacent to the battery panels 20A to 20C. However, the PCS panels 30A to 30C may be provided apart from the battery panels 20A to 20C.

[0079] (3) In the above embodiment, the remote monitoring panel 100A is disposed behind the PCS panel 30A. However, the remote monitoring panel 100A may be disposed anywhere on the outer surface of the PCS panel 30A.

[0080] (4) In the above embodiment, the LTE router 125 and antenna 129 are shared among multiple remote monitoring panels 100A-100C. As shown in FIG. 9, an LTE router 125 and antenna 129 may be installed in each remote monitoring panel 100A-100C. Installing an LTE router 125 and antenna 129 in each remote monitoring panel 100A-100C increases the number of LTE routers 125 and antennas 129 used, but enables maintenance on a per-remote monitoring panel basis. Even if the LTE router 125 or antenna 129 fails, the failure does not affect others, and remote monitoring of the battery panels 20A-20C can continue using the other remote monitoring panels 100A-100C. In the configuration of FIG. 9, the first HUB 123 and second HUB 133 may be omitted.

[0081] (5) In the above embodiment, the remote monitoring panel 100A and the remote monitoring device 150 are connected wirelessly, but they may be connected by wire. In the case of a wired connection, the antenna 129 can be omitted.

[0082] (6) In the above embodiment, the housing 105 of the remote monitoring panel 100A is made of metal, but it may be made of a material other than metal as long as it has a shielding effect (electromagnetic shielding).

[0083] 1 Power system 10A~10C Energy Storage System 20A~20C storage battery board 23A~23C Individual monitoring section 30A~30C PCS board 40A~40C Power Conversion Unit 50A~50C control unit 55A~55C Integrated Monitoring Unit 70A~70C Input / Output Unit 100A~100C Remote monitoring panel 120A~120C 1st interface 130A~130C Second Interface 121 1st NIC 123 1st HUB 125 LTE router (network repeater) 129 Antenna 131 Second NIC 133 2nd HUB

Claims

1. 1. A PCS panel for an energy storage system, comprising: The housing and a power conversion unit housed in the housing; a control unit housed in the housing and controlling the power conversion unit, A PCS panel in which a remote monitoring panel that remotely monitors a battery panel that stores energy is placed on the outer surface of the housing.

2. 10. The PCS board of claim 1, The remote monitoring panel comprises: A metal housing and a first interface housed in the housing for connecting to a remote monitoring device that remotely monitors the battery panel; a second interface housed in the housing for connecting to a higher-level device that controls the PCS board;

3. 3. The PCS board of claim 2, the PCS panel includes a monitoring unit that monitors a state of the battery panel, The first interface includes at least a NIC connected to the monitoring unit; a network repeater connected to the NIC.

4. 4. The PCS board of claim 3, The NIC is connected to the network repeater via a HUB.

5. 10. The PCS board of claim 1, the PCS board accommodates an input / output unit in a part of the housing; The remote monitoring panel is arranged at a position that avoids a part of the PCS panel that houses the input / output unit.

6. 10. The PCS board of claim 1, A removable maintenance panel is installed on the housing, The remote monitoring panel is arranged at a position away from the panel relative to the PCS panel.

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