Energy storage system

Abstract

An energy storage system according to embodiments of the present disclosure includes a control container and a battery container, the control container configured to include: a battery system controller (BSC); a master controller configured to be connected to the BSC through a first communication line; and a bank battery management system (BBMS) configured to be connected to the BSC through a second communication line, the battery container configured to include: a slave controller configured to be connected to the master controller through the first communication line; and a rack battery management system (RBMS) connected to the BBMS through the second communication line and configured to monitor a state of a corresponding battery rack.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2022-0008141, filed in Korea on January 19, 2022, and Korean Patent Application No. 10-2023-0006968, filed in Korea on January 17, 2023, the disclosures of which are incorporated herein by reference.

[0002] This disclosure relates to an energy storage system, and more specifically to an energy storage system comprising a control container, a battery container, and a watering container. Background Technology

[0003] In recent years, the demand for portable electronic products such as laptops, cameras, and mobile phones has increased dramatically, and electric vehicles, energy storage batteries, robots, and satellites have also seen significant development. Therefore, high-performance batteries that allow for repeated charging and discharging are being actively researched.

[0004] Currently available batteries include nickel-cadmium (NiCd), nickel-metal hydride (NiMH), nickel-zinc (NiZn), and lithium-ion batteries. Among these, lithium-ion batteries have attracted much attention because they have virtually no memory effect compared to nickel-based batteries, and also possess very low self-discharge rates and high energy density.

[0005] Energy storage systems using such batteries can be devices that store large amounts of electricity and supply the stored electricity to multiple load facilities. For example, energy storage systems are used in the form of industrial, building, or home energy management systems and serve as conventional and / or emergency power grids by supplying the stored electricity to load facilities at each point of use.

[0006] Traditional energy storage systems are configured in container units, with each container comprising multiple battery racks, distribution panels, and so on. In other words, a container of sufficient size to accommodate all components of the energy storage system is required.

[0007] In addition, when multiple energy storage systems are set up, since each energy storage system consists of an independent container, there is a problem that the container unit energy storage system must be controlled separately. Summary of the Invention

[0008] Technical issues

[0009] This disclosure is designed to address problems in the related art, and therefore aims to provide an energy storage system comprising a control container, a battery container, and a watering container, wherein a communication line can be formed by connecting pre-set connection terminals.

[0010] These and other objects and advantages of this disclosure will become clear from the following detailed description, and will become even more fully apparent from exemplary embodiments thereof. Furthermore, it will be readily understood that the objects and advantages of this disclosure can be achieved by the means and combinations thereof shown in the appended claims.

[0011] Technical solution

[0012] In one aspect of this disclosure, an energy storage system is provided, comprising: a control container configured to include: a battery system controller (BSC); a main controller configured to be connected to the BSC via a first communication line; and a battery management system (BBMS) configured to be connected to the BSC via a second communication line; and a battery container configured to include a slave controller configured to be connected to the main controller via the first communication line; and a rack battery management system (RBMS) connected to the BBMS via the second communication line and configured to monitor the status of a corresponding battery rack.

[0013] When multiple battery containers are configured, the master controller can be configured to connect to multiple slave controllers included in the multiple battery containers via a first communication line.

[0014] The master controller can be configured to connect directly to each of the multiple slave controllers via a first communication line in a home run manner.

[0015] When multiple battery containers are configured, the BBMS can be configured to connect to multiple RBMS included in the multiple battery containers via a second communication line.

[0016] BBMS can be configured to be daisy-chained to multiple RBMS via a second communication line.

[0017] The BSC can be configured to connect to an external power conversion system (PCS) via a first communication line.

[0018] According to another aspect of this disclosure, the energy storage system may also include a watering container connected to the main controller via a third communication line and configured to output fire extinguishing liquid therein to the battery rack when a watering command is received from the main controller.

[0019] According to another aspect of this disclosure, the energy storage system may further include a second control container configured to include: a second main controller configured to be connected to the BSC via a first communication line; and a second BBMS configured to be connected to the BSC via a second communication line.

[0020] According to another aspect of this disclosure, the energy storage system may further include a second battery container configured to include: a second slave controller configured to be connected to a second master controller via a first communication line; and a second RBMS connected to a second BBMS via a second communication line and configured to monitor the status of a corresponding second battery rack.

[0021] According to another aspect of this disclosure, the energy storage system may further include a second watering container, which is connected to a second main controller via a third communication line and is configured to output fire extinguishing liquid therein to a second battery rack when a watering command is received from the second main controller.

[0022] Beneficial effects

[0023] According to one aspect of this disclosure, by using a home run method and a daisy chain method to connect the communication lines of the energy storage system, there is an advantage in improving the communication stability of the energy storage system.

[0024] Furthermore, according to one aspect of this disclosure, there is an advantage that the battery container can be easily expanded in the energy storage system.

[0025] The effects of this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the appended claims other effects not mentioned herein. Attached Figure Description

[0026] The accompanying drawings illustrate preferred embodiments of the present disclosure and, together with the foregoing disclosure, serve to provide a further understanding of the technical features of the present disclosure; therefore, the present disclosure should not be construed as limited to the drawings.

[0027] Figure 1 This is a schematic diagram illustrating an energy storage system according to an embodiment of the present disclosure.

[0028] Figure 2 This is a schematic diagram illustrating a first embodiment of an energy storage system according to an embodiment of the present disclosure.

[0029] Figure 3 This is a diagram schematically illustrating a second embodiment of an energy storage system according to an embodiment of the present disclosure.

[0030] Figure 4 This is a schematic diagram illustrating a third embodiment of an energy storage system according to embodiments of the present disclosure. Detailed Implementation

[0031] It should be understood that the terms used in the specification and appended claims should not be construed as limited to their general or dictionary meanings, but rather as being interpreted based on their meanings and concepts corresponding to the technical aspects of this disclosure, on the basis of allowing the inventors to appropriately define the terms for the best interpretation.

[0032] Therefore, the description presented herein is merely a preferred example for illustrative purposes and is not intended to limit the scope of this disclosure. It should be understood that other equivalents and modifications may be made thereto without departing from the scope of this disclosure.

[0033] Furthermore, in describing this disclosure, detailed descriptions of known elements or functions are omitted here where such detailed descriptions would obscure the key subject matter of the disclosure.

[0034] Ordinal terms such as “first” and “second” can be used to distinguish one element from another among various elements, but are not intended to limit elements by terminology.

[0035] Throughout this specification, when a section is referred to as “including” or “containing” any element, it means that the section may also include other elements, without excluding other elements, unless otherwise specifically stated.

[0036] Furthermore, throughout the specification, when one part is referred to as "connected" to another part, it is not limited to the case where they are "directly connected," but also includes the case where they are "indirectly connected" by inserting another element into them.

[0037] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0038] Figure 1 This is a schematic diagram of an energy storage system 10 according to an embodiment of the present disclosure. Figure 2 This is a schematic diagram illustrating a first embodiment of an energy storage system 10 according to an embodiment of the present disclosure.

[0039] refer to Figure 1 The energy storage system 10 may include a control container 100 and a battery container 200.

[0040] For example, the energy storage system 10 according to an embodiment of this disclosure can be represented as DC-LINK. Furthermore, the control container 100 can be represented as E-LINK, and the battery container 200 can be represented as B-LINK.

[0041] The control container 100 may include a battery system controller (BSC) 110, a main controller 120, and a battery management system (BBMS) 130.

[0042] BSC 110 is the top-level controller and can communicatively connect to the main controller 120 and BBMS 130.

[0043] Additionally, BSC 110 can be configured to connect to an external power conversion system (PCS) 20 via a first communication line CL1. For example, the first communication line CL1 can be a communication line used with a first communication protocol. As a specific example, the first communication line CL1 can be a communication line used for Modbus TCP / IP communication.

[0044] For example, in Figure 2 In one embodiment, BSC 110 can be communicatively connected to PCS20 via the first communication line CL1.

[0045] The main controller 120 can be configured to connect to the BSC 110 via the first communication line CL1.

[0046] Here, the main controller 120 is a programmable logic controller (PLC) included in the E-LINK and can be represented as an E-PLC. That is, the main controller 120 can connect to and control components included in the control container 100, such as HVAC (heating, ventilation, and air conditioning), uninterruptible power supply (UPS), door sensors, fuses, switches, switch-mode power supply (SMPS), fire suppression system (FSS), surge protection device (SPD), insulation monitoring device (IMD), etc. Furthermore, the main controller 120 can transmit control container information obtained from these components to the BSC 110 via the first communication line CL1. That is, the BSC 110 can receive control container information obtained from the main controller 120 via the first communication line CL1. Furthermore, the BSC 110 can control the main controller 120 based on the control container information to control each component included in the control container 100.

[0047] For example, in Figure 2 In this embodiment, the main controller 120 can be communicatively connected to the BSC 110 via the first communication line CL1. That is, the PCS 20, BSC 110, and main controller 120 can be connected to each other via the first communication line CL1.

[0048] The BBMS130 can be configured to connect to the BSC 110 via a second communication line CL2. For example, the second communication line CL2 can be a communication line used for a second communication protocol. As a specific example, the second communication line CL2 can be a communication line used for Controller Area Network (CAN) communication.

[0049] For example, in Figure 2In this embodiment, BBMS130 can be communicatively connected to BSC110 via a second communication line CL2. That is, BSC110 can be connected to both the main controller 120 and BBMS130 via different communication lines. Therefore, even if a failure occurs in one communication line, BSC110 can continue communicating via the remaining communication lines.

[0050] Battery container 200 may include controller 210 and rack battery management system (RBMS) 220. Unlike control container 100, battery container 200 may not include BSC 110.

[0051] The controller 210 can be configured to connect to the main controller 120 via the first communication line CL1.

[0052] Here, the slave controller 210 is a PLC included in the B-LINK and can be represented as a B-PLC. That is, the slave controller 210 can connect to and control components included in the battery container 200, such as HVAC, UPS, door sensors, gas sensors, smoke sensors, switches, SMPS, dampers, fans, and FSS. Furthermore, the slave controller 210 can send battery container information obtained from these components to the master controller 120 via the first communication line CL1. Additionally, the BSC 110 can receive battery container information obtained from the master controller 120 via the first communication line CL1. In other words, the BSC 110, master controller 120, and slave controller 210 can be connected to each other via the first communication line CL1. Furthermore, the BSC 110 can control the slave controller 210 based on the battery container information to control each component included in the battery container 200.

[0053] For example, in Figure 2 In this embodiment, the slave controller 210 can be communicatively connected to the master controller 120 via the first communication line CL1. That is, the BSC 110, the master controller 120, and the slave controller 210 can be connected to each other via the first communication line CL1.

[0054] The RBMS220 can be configured to connect to the BBMS 130 via the second communication line CL2 and monitor the status of the corresponding battery rack.

[0055] Specifically, the battery container 200 may include at least one battery rack. Furthermore, each battery rack may include at least one battery module. The status of the battery module can be monitored by a Module Battery Management System (MBMS). Additionally, at least one MBMS can be connected to a corresponding RBMS 220 via a second communication line CL2. That is, the RBMS 220 can monitor the status of the battery rack and the status of the battery modules included in the battery rack.

[0056] Furthermore, RBMS220 can be connected to BBMS130. That is, BBMS130 included in control container 100 can be connected to RBMS220 included in battery container 200 using the second communication line CL2. In addition, BBMS130 can receive information about the corresponding battery rack from at least one RBMS220 included in battery container 200.

[0057] For example, in Figure 2 In one embodiment, the battery container 200 may include two RBMS 220a and 220b. RBMS 220a can be connected to BBMS 130 via a second communication line CL2. Furthermore, RBMS 220a can be connected to RBMS 220b via the second communication line CL2. That is, the BSC 110 and BBMS 130 included in the control container 100 can be communicatively connected to the RBMS 220a and 220b included in the battery container 200 via the second communication line CL2.

[0058] The energy storage system 10 according to an embodiment of the present disclosure may include a first communication line CL1 connecting the BSC 110, the master controller 120, and the slave controller 210, and a second communication line CL2 connecting the BSC 110, the BBMS 130, and the RBMS 220. Therefore, even if any one communication line fails, communication can continue through the other communication line.

[0059] For example, even if communication between the master controller 120 and the slave controller 210 fails due to a problem in the first communication line CL1, the BBMS 130 can still receive battery rack information normally from the RBMS 220 via the second communication line CL2. Therefore, the energy storage system 10 has the advantage of establishing independent communication paths through different communication lines, taking into account communication goals and purposes. Thus, stable communication can be performed within the energy storage system 10.

[0060] Figure 3 This is a schematic diagram illustrating a second embodiment of the energy storage system 10 according to an embodiment of the present disclosure. Specifically, Figure 3 The embodiment is in Figure 2 An embodiment further includes a battery container 200b.

[0061] When multiple battery containers 200 are provided, the main controller 120 can be configured to be connected to multiple slave controllers 210 included in the multiple battery containers 200 via a first communication line CL1.

[0062] Specifically, the master controller 120 can be configured to be directly connected to each of the plurality of slave controllers 210 via the first communication line CL1. For example, the master controller 120 can be configured to be directly connected to each of the plurality of slave controllers 210 via the first communication line CL1 in a home run manner.

[0063] For example, in Figure 3 In this embodiment, the main controller 120 can be directly connected to the slave controller 210a included in the battery container 200a via the first communication line CL1. Furthermore, the main controller 120 can be directly connected to the slave controller 210b included in the battery container 200b via the first communication line CL1. That is, the communication structure between the main controller 120 and the slave controller 210a can remain unchanged without affecting the communication structure between the main controller 120 and the slave controller 210b.

[0064] Furthermore, when multiple battery containers 200 are configured, the BBMS130 can be configured to connect to multiple RBMS220 included in the multiple battery containers 200 via a second communication line CL2.

[0065] Specifically, the BBMS130 can be configured to be connected in series with multiple RBMS220s via the second communication line CL2. The BBMS130 can be daisy-chained with multiple RBMS220s via the second communication line CL2.

[0066] For example, in Figure 3 In this embodiment, BBMS130 can be connected to RBMS220a, which is included in battery container 200a, via the second communication line CL2. Furthermore, RBMS220a can be connected to RBMS220b via the second communication line CL2. Furthermore, RBMS220b can be connected to RBMS220c, which is included in battery container 200b, via the second communication line CL2. Furthermore, RBMS220c can be connected to RBMS220d via the second communication line CL2. That is, BSC 110, BBMS130, RBMS220a, RBMS220b, RBMS220c, and RBMS 220d can be connected via the second communication line CL2.

[0067] The energy storage system 10 according to an embodiment of the present disclosure has the advantage of improving the stability of each communication path by giving independence to the communication path along the first communication line CL1 and the communication path along the second communication line CL2.

[0068] refer to Figure 1 The energy storage system 10 may also include a watering container 300.

[0069] Specifically, the watering container 300 may include a water injection device capable of discharging fire extinguishing liquid into the battery container 200 in the event of a fire. Furthermore, the watering container 300 may be referred to as a water injection unit (WIU).

[0070] The watering container 300 can be connected to the main controller 120 via the third communication line CL3, and can output the fire extinguishing liquid in it to the battery rack when it receives a watering command from the main controller 120.

[0071] For example, the watering container 300 may include a control unit and a watering unit. When a watering command is received from the main controller 120, the control unit can control the watering unit to output fire extinguishing liquid.

[0072] Additionally, the watering unit can be connected via piping to the RBMS220 included in the battery container 200. Specifically, the watering unit can be connected via piping to each battery module included in the RBMS220. Here, a breakable temperature-sensing bulb can be installed in the piping. For example, the temperature-sensing bulb can be configured to be damaged based on the temperature of the battery rack or battery module to which it is connected.

[0073] For example, when a fire occurs in battery container 200, the control unit can receive a water spraying command. The control unit can then control the water spraying unit to output fire extinguishing liquid into the pipeline. In this case, because the heat sensor ruptures in the pipeline corresponding to the battery module where the fire occurred, the fire extinguishing liquid can be introduced into the battery module through the pipeline.

[0074] exist Figure 3 In this embodiment, the main controller 120 can be communicatively connected to the watering container 300 via a third communication line CL3. For example, the third communication line CL3 may be a communication line used for a third communication protocol. As a specific example, the third communication line CL3 may be a communication line used for Modbus RTU communication.

[0075] The energy storage system 10 according to embodiments of the present disclosure has the advantage of ensuring the communication stability of each communication path by establishing an independent communication path through each of the first communication line CL1, the second communication line CL2 and the third communication line CL3.

[0076] Figure 4 This is a schematic diagram illustrating a third embodiment of the energy storage system 10 according to an embodiment of the present disclosure.

[0077] refer to Figure 4The energy storage system 10 may include multiple control containers 100, 101, multiple battery containers 200a, 200b, 201a, 201b, and multiple watering containers 300, 301. Specifically, according to Figure 4 The energy storage system 10 of the embodiment can be based on Figure 3 The energy storage system 10 of the embodiment further includes a second control container 101, second battery containers 201a, 201b and a second watering container 301.

[0078] The second control container 101 can be configured to include a second main controller 121 and a second BBMS 131.

[0079] Specifically, the second master controller 121 can be configured to connect to the BSC 110 via the first communication line CL1. That is, the BSC 110, which is included in the first control container 100, may not be included in the second control container 101.

[0080] For example, in Figure 4 In this embodiment, BSC 110 may be included only in the first control container 100. Furthermore, the first main controller 120 and the second main controller 121 can be communicatively connected to BSC 110 via the first communication line CL1. That is, even if multiple control containers 100, 101 are provided in the energy storage system 10, BSC 110, as the top-level controller, may be included only in one control container 100.

[0081] For example, the first master controller 120 can transmit information about the first control container, obtained from components included in the first control container 100, to the BSC 110 via the first communication line CL1. Independently, the second master controller 121 can transmit information about the second control container, obtained from components included in the second control container 101, to the BSC 110 via the first communication line CL1. The BSC 110 can control the first master controller 120 based on the information about the first control container to control each component included in the first control container 100. Additionally, the BSC 110 can control the second master controller 121 based on the information about the second control container to control each component included in the second control container 101.

[0082] The second BBMS131 can be configured to connect to the BSC 110 via the second communication line CL2.

[0083] For example, in Figure 4 In one embodiment, the second BBMS131 can be connected to the BSC 110 via the second communication line CL2.

[0084] The second battery container 201 may include a second slave controller 211 and a second RBMS 221. For example, in Figure 4 In one embodiment, the first control container 100 can be connected to the first battery containers 200a and 200b, and the second control container 101 can be connected to the second battery containers 201a and 201b.

[0085] The second slave controller 211 can be configured to connect to the second master controller 121 via the first communication line CL1. Additionally, the second RBMS 221 can be configured to connect to the second BBMS 131 via the second communication line CL2 and monitor the status of the corresponding second battery rack.

[0086] The second watering container 301 can be configured to connect to the second main controller 121 via the third communication line CL3, and output the fire extinguishing liquid therein to the second battery rack when a watering command is received from the second main controller 121.

[0087] Specifically, the communication structure between the main controller 121 and the slave controller 211, the communication structure between BBMS131 and RBMS221, and the communication structure between the main controller 121 and the watering container 301 can be the same as the communication structures described above. For example, in Figure 4 In this embodiment, the second master controller 121 and the second slave controllers 211a and 211b can be connected via the first communication line CL1 in the same manner as they are connected to the first master controller 120 and the first slave controllers 210a and 210b. Similarly, the second BBMS 131 and the second RBMS 221a, 221b, 221c, and 221d can be connected via the second communication line CL2 in the same manner as they are connected to the first BBMS 130 and the first RBMS 220a, 220b, 220c, and 220d. Furthermore, the second master controller 121 and the second watering container 301 can be connected via the third communication line CL3 in the same manner as they are connected to the first master controller 120 and the first watering container 300.

[0088] The energy storage system 10 according to an embodiment of this disclosure has structural features in which control containers 100, 101, battery containers 200, 201, and watering containers 300, 301 can be expanded and connected. Therefore, more battery containers 200, 201 can be connected to the energy storage system 10 as needed, and the energy storage system 10 can be monitored as a whole through a single BSC 110. In other words, the energy storage system 10 has the advantages of not only scalability but also the ability to be controlled and managed as a whole through a single BSC 110.

[0089] This disclosure has been described in detail. However, it should be understood that while the detailed description and specific examples indicate preferred embodiments of this disclosure, they are given by way of illustration only, as various changes and modifications within the scope of this disclosure based on the detailed description will be apparent to those skilled in the art.

[0090] Furthermore, since those skilled in the art can substitute, modify, and change the above disclosure in various ways without departing from the technical concept of the disclosure, the disclosure is not limited to the above embodiments and drawings, and all or some of the embodiments can be selectively combined to achieve various modifications.

[0091] (Explanation of reference numerals in the attached diagram)

[0092] 10: Energy Storage System

[0093] 20: PCS

[0094] 100: Control container, first control container

[0095] 101: Second Control Container

[0096] 110: BSC

[0097] 120: Main controller, first main controller

[0098] 121: Second main controller

[0099] 130: BBMS, First BBMS

[0100] 131: Second BBMS

[0101] 200: Battery container

[0102] 200a, 200b: Battery container, first battery container

[0103] 201a, 201b: Second battery container

[0104] 210: From the controller

[0105] 210a, 210b: Slave controller, first slave controller

[0106] 211a, 211b: Second slave controller

[0107] 220a, 220b, 220c, 220d: RBMS, First RBMS

[0108] 221a, 221b, 221c, 221d: Second RBMS

[0109] 300: Watering container, first watering container

[0110] 301: Second watering container

Claims

1. An energy storage system, comprising: A control container configured to include: a battery system controller; a main controller configured to be connected to the battery system controller via a first communication line; and a library battery management system configured to be connected to the battery system controller via a second communication line; and A battery container, configured to include: a slave controller configured to be connected to the master controller via a first communication line; and a rack battery management system connected to the library battery management system via a second communication line and configured to monitor the status of a corresponding battery rack.

2. The energy storage system according to claim 1, in, When multiple battery containers are configured, the master controller is configured to connect to multiple slave controllers included in the multiple battery containers via the first communication line.

3. The energy storage system according to claim 2, in, The master controller is configured to connect directly to each of the plurality of slave controllers via the first communication line in a home run manner.

4. The energy storage system according to claim 1, in, When multiple battery containers are configured, the library battery management system is configured to connect to multiple rack battery management systems included in the multiple battery containers via the second communication line.

5. The energy storage system according to claim 4, in, The battery management system is configured to be connected in series with the plurality of rack battery management systems via the second communication line in a daisy-chain manner.

6. The energy storage system according to claim 1, in, The battery system controller is configured to connect to an external power conversion system (PCS) via the first communication line.

7. The energy storage system of claim 1, further comprising a watering container connected to the main controller via a third communication line and configured to output fire extinguishing liquid therein to the battery rack upon receiving a watering command from the main controller.

8. The energy storage system of claim 1, further comprising a second control container, the second control container being configured to include: A second main controller is configured to be connected to the battery system controller via the first communication line; And a second battery management system configured to be connected to the battery system controller via the second communication line.

9. The energy storage system of claim 8, further comprising a second battery container, the second battery container being configured to include: A second slave controller is configured to be connected to the second master controller via the first communication line; And a second battery management system, which is configured to connect to the second battery management system via the second communication line and to monitor the status of the corresponding second battery rack.

10. The energy storage system of claim 9, further comprising a second watering container connected to the second main controller via a third communication line, and configured to output fire extinguishing liquid therein to the second battery rack upon receiving a watering command from the second main controller.

11. The energy storage system according to claim 7, wherein, The first communication line, the second communication line, and the third communication line are used with different communication protocols.

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