KR102616748B1 - Energy storage system - Google Patents

Abstract

An energy storage device according to an embodiment of the present invention includes a battery system controller (BSC); a master controller configured to be connected to the BSC through a first communication line; and a control container configured to include a bank battery management system (BBMS) configured to be connected to the BSC through a second communication line; and 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 the status of the corresponding battery rack.

Description

Energy storage device {ENERGY STORAGE SYSTEM}

This application is a priority application for Korean Patent Application No. 10-2022-0008141 filed on January 19, 2022, and all contents disclosed in the specification and drawings of the application are incorporated by reference into this application.

The present invention relates to an energy storage device, and more specifically, to an energy storage device including a control container, a battery container, and a water injection container.

Recently, as the demand for portable electronic products such as laptops, video cameras, and portable phones has rapidly increased, and as the development of electric vehicles, energy storage batteries, robots, and satellites has begun, the need for high-performance batteries capable of repeated charging and discharging has increased. Research is actively underway.

Currently commercialized batteries include nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and lithium batteries. Among these, lithium batteries have almost no memory effect compared to nickel-based batteries, so they can be freely charged and discharged, and have a very high self-discharge rate. It is attracting attention due to its low and high energy density.

An energy storage device using such a battery may be a device that stores large amounts of power and provides the stored power to a plurality of load facilities. For example, energy storage devices are used in the form of industrial, building, or home energy management systems, and are used as permanent power grids and/or emergency power grids by providing stored power to load facilities at each point of use.

Conventional energy storage devices are constructed in container units, and one container includes a plurality of battery racks and a switchboard. In other words, a container large enough to contain all components of the energy storage device was required.

Additionally, when a plurality of energy storage devices are provided, each energy storage device is composed of an independent container, so there is a problem in that each energy storage device must be controlled on a container basis.

The present invention was devised to solve the above problems, and provides an energy storage device including a control container, a battery container, and a water injection container in which a communication line can be formed through connection between pre-equipped connection terminals. The purpose.

Other objects and advantages of the present invention can be understood from the following description and will be more clearly understood by practicing the present invention. In addition, it will be readily apparent that the objects and advantages of the present invention can be realized by means and combinations thereof indicated in the claims.

An energy storage device according to one aspect of the present invention includes a battery system controller (BSC); a master controller configured to be connected to the BSC through a first communication line; and a control container configured to include a bank battery management system (BBMS) configured to be connected to the BSC through a second communication line; and a slave controller configured to be connected to the master controller through the first communication line. and a battery container configured to include a rack battery management system (RBMS) connected to the BBMS through the second communication line and configured to monitor the status of a corresponding battery rack.

When a plurality of battery containers are provided, the master controller may be configured to be connected to a plurality of slave controllers included in the plurality of battery containers through the first communication line.

The master controller may be configured to be directly connected to each of the plurality of slave controllers in a home run manner through the first communication line.

When there are multiple battery containers, the BBMS may be configured to be connected to a plurality of RBMS included in a plurality of battery containers through the second communication line.

The BBMS may be configured to be connected in series with the plurality of RBMS in a daisy chain manner through the second communication line.

The BSC may be configured to be connected to an external power conversion system (PCS) through the first communication line.

The energy storage device according to another aspect of the present invention is connected to the master controller through a third communication line, and upon receiving a watering command from the master controller, the energy storage device may further include a watering container configured to output the fire extinguishing liquid therein to the battery rack. You can.

An energy storage device according to another aspect of the present invention includes a second master controller configured to be connected to the BSC through the first communication line; and a second control container configured to include a second BBMS configured to be connected to the BSC through the second communication line.

An energy storage device according to another aspect of the present invention includes a second slave controller configured to be connected to the second master controller through the first communication line; And it may further include a second battery container configured to include a second RBMS connected to the second BBMS through the second communication line and configured to monitor the status of the corresponding second battery rack.

The energy storage device according to another aspect of the present invention is connected to the second master controller through a third communication line, and outputs the internal digestive juice to the second battery rack when receiving a watering command from the second master controller. It may further include a configured second water container.

According to one aspect of the present invention, there is an advantage in improving the communication stability of the energy storage device by connecting the communication lines of the energy storage device using the home run method and the daisy chain method. .

Additionally, according to one aspect of the present invention, there is an advantage that the battery container in the energy storage device can be easily expanded.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The following drawings attached to this specification serve to further understand the technical idea of the present invention along with the detailed description of the invention described later, and therefore the present invention should not be construed as limited to the matters described in such drawings.
1 is a diagram schematically showing an energy storage device according to an embodiment of the present invention.
Figure 2 is a diagram schematically showing a first embodiment of an energy storage device according to an embodiment of the present invention.
Figure 3 is a diagram schematically showing a second embodiment of an energy storage device according to an embodiment of the present invention.
Figure 4 is a diagram schematically showing a third embodiment of an energy storage device according to an embodiment of the present invention.

Terms or words used in this specification and claims should not be construed as limited to their common or dictionary meanings, and the inventor may appropriately define the concept of terms in order to explain his or her invention in the best way. It should be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it is.

Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, so at the time of filing this application, various alternatives are available to replace them. It should be understood that equivalents and variations may exist.

Additionally, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

Terms containing ordinal numbers, such as first, second, etc., are used for the purpose of distinguishing one of the various components from the rest, and are not used to limit the components by such terms.

Throughout the specification, when a part is said to “include” a certain element, this means that it does not exclude other elements, but may further include other elements, unless specifically stated to the contrary.

Additionally, throughout the specification, when a part is said to be "connected" to another part, this refers not only to the case where it is "directly connected" but also to the case where it is "indirectly connected" with another element in between. Includes.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a diagram schematically showing an energy storage device 10 according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing a first embodiment of an energy storage device 10 according to an embodiment of the present invention.

Referring to FIG. 1, the energy storage device 10 may include a control container 100 and a battery container 200.

For example, the energy storage device 10 according to an embodiment of the present invention may be expressed as DC-LINK. Additionally, the control container 100 may be expressed as E-LINK, and the battery container 200 may be expressed as B-LINK.

The control container 100 may include a battery system controller (BSC) 110, a master controller 120, and a bank battery management system (BBMS) 130.

The BSC 110 is the highest level controller and can be connected to communicate with the master controller 120 and the BBMS 130.

Additionally, the BSC 110 may be configured to be connected to an external power conversion system (PCS) 20 through the first communication line CL1. For example, the first communication line CL1 may be a communication line applied to the first communication protocol. As a specific example, the first communication line CL1 may be a communication line for Modbus TCP/IP communication.

For example, in the embodiment of FIG. 2, the BSC 110 may be connected to enable communication with the PCS 20 through the first communication line CL1.

The master controller 120 may be configured to be connected to the BSC 110 through the first communication line CL1.

Here, the master controller 120 is a PLC (Programmable Logic Controller) included in E-LINK and can be expressed as E-PLC. That is, the master controller 120 controls HVAC (Heating, ventilation and air conditioning), UPS (Uninterruptible Power Supply system), door sensor, fuse, and switch included in the control container 100. , it is connected to components such as SMPS (Switching mode power supply), FSS (Fire suppression system), SPD (Surge protect device), and IMD (Insulation monitoring device), and can control these components. And, the master controller 120 may transmit control container information obtained from these configurations to the BSC 110 through the first communication line CL1. That is, the BSC 110 may receive control container information acquired by the master controller 120 through the first communication line CL1. Additionally, the BSC 110 may control the master controller 120 to control each configuration included in the control container 100 based on the control container information.

For example, in the embodiment of FIG. 2, the master controller 120 may be connected to communicate with the BSC 110 through the first communication line CL1. That is, the PCS 20, BSC 110, and master controller 120 may be connected to each other through the first communication line CL1.

BBMS 130 may be configured to be connected to BSC 110 through a second communication line CL2. For example, the second communication line CL2 may be a communication line applied to a second communication protocol. As a specific example, the second communication line CL2 may be a communication line for CAN (Controller area network) communication.

For example, in the embodiment of FIG. 2, the BBMS 130 may be connected to communicate with the BSC 110 through the second communication line CL2. That is, the BSC 110 may be connected to the master controller 120 and the BBMS 130 through different communication lines. Therefore, even if a defect occurs in any one communication line, the BSC 110 can continue communication through the remaining communication lines.

The battery container 200 may include a slave controller 210 and a rack battery management system (RBMS) 220. Unlike the control container 100, the battery container 200 may not include the BSC 110.

The slave controller 210 may be configured to be connected to the master controller 120 through the first communication line (CL1).

Here, the slave controller 210 is a PLC included in B-LINK and can be expressed as a B-PLC. That is, the slave controller 210 includes HVAC, UPS, door sensor, gas sensor, smoke sensor, switch, SMPS, damper, and fan (FAN) included in the battery container 200. and FSS, etc. to control their configuration. And, the slave controller 210 can transmit the battery container information obtained from these configurations to the master controller 120 through the first communication line CL1. Additionally, the BSC 110 may receive the battery container information obtained by the master controller 120 through the first communication line CL1. That is, the BSC 110, master controller 120, and slave controller 210 may be connected to each other through the first communication line CL1. Additionally, the BSC 110 may control the slave controller 210 to control each component included in the battery container 200 based on the battery container information.

For example, in the embodiment of FIG. 2, the slave controller 210 may be connected to communicate with the master controller 120 through the first communication line CL1. That is, the BSC 110, master controller 120, and slave controller 210 may be connected to each other through the first communication line CL1.

The RBMS 220 is connected to the BBMS 130 through a second communication line CL2 and may be configured to monitor the status of the corresponding battery rack.

Specifically, the battery container 200 may include one or more battery racks. Additionally, each battery rack may include one or more battery modules. The status of these battery modules can be monitored by a module battery management system (MBMS). In addition, one or more MBMS may be connected to the corresponding RBMS 220 through the second communication line CL2. That is, the RBMS 220 can monitor the status of the battery rack and the status of the battery module included in the battery rack.

And, the RBMS 220 may be connected to the BBMS 130. That is, the BBMS 130 included in the control container 100 may be connected to the RBMS 220 included in the battery container 200 using the second communication line CL2. Additionally, the BBMS 130 may receive information on the corresponding battery rack from one or more RBMS 220 included in the battery container 200.

For example, in the embodiment of FIG. 2, the battery container 200 may include two RBMSs 220a and 220b. RBMS (220a) may be connected to BBMS (130) through a second communication line (CL2). Additionally, the RBMS 220a may be connected to the RBMS 220b through a second communication line CL2. That is, the BSC 110 and BBMS 130 included in the control container 100 may be connected to communicate with the RBMS 220a and 220b included in the battery container 200 through the second communication line CL2. .

The energy storage device 10 according to an embodiment of the present invention includes a first communication line CL1 connecting the BSC 110, the master controller 120, and the slave controller 210, the BSC 110, and the BBMS 130. ) and a second communication line (CL2) connecting the RBMS 220. Therefore, even if a defect occurs in one communication line, communication can continue through the remaining communication lines.

For example, even if communication between the master controller 120 and the slave controller 210 is not performed normally due to a problem in the first communication line CL1, the BBMS 130 communicates with the RBMS 220 through the second communication line CL2. ), you can normally receive information about the battery rack. Therefore, the energy storage device 10 has the advantage of establishing an independent communication path through different communication lines in consideration of the communication target and communication purpose. Therefore, stable communication can be performed in the energy storage device 10.

FIG. 3 is a diagram schematically showing a second embodiment of the energy storage device 10 according to an embodiment of the present invention. Specifically, the embodiment shown in FIG. 3 is an embodiment in which a battery container 200b is added to the embodiment shown in FIG. 2 .

When a plurality of battery containers 200 are provided, the master controller 120 may be configured to be connected to a plurality of slave controllers 210 included in the plurality of battery containers 200 through the first communication line CL1. .

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

For example, in the embodiment of FIG. 3, the master controller 120 may be directly connected to the slave controller 210a included in the battery container 200a through the first communication line CL1. Additionally, the master controller 120 may be directly connected to the slave controller 210b included in the battery container 200b through the first communication line CL1. That is, the communication structure between the master controller 120 and the slave controller 210a may not affect the communication structure between the master controller 120 and the slave controller 210b.

In addition, when a plurality of battery containers 200 are provided, the BBMS 130 may be configured to be connected to a plurality of RBMS 220 included in the plurality of battery containers 200 through the second communication line CL2. .

Specifically, the BBMS 130 may be configured to be connected in series with a plurality of RBMS 220 through a second communication line CL2. The BBMS 130 may be configured to be connected in series with a plurality of RBMS 220 in a daisy chain manner through the second communication line CL2.

For example, in the embodiment of FIG. 3, the BBMS 130 may be connected to the RBMS 220a included in the battery container 200a through the second communication line CL2. Additionally, the RBMS 220a may be connected to the RBMS 220b through a second communication line CL2. Additionally, the RBMS 220b may be connected to the RBMS 220c included in the battery container 200b through a second communication line CL2. Additionally, the RBMS 220c may be connected to the RBMS 220d through a second communication line CL2. That is, the BSC 110, BBMS 130, RBMS 220a, RBMS 220b, RBMS 220c, and RBMS 220d may be connected through the second communication line CL2.

The energy storage device 10 according to an embodiment of the present invention provides independence to the communication path along the first communication line CL1 and the communication path along the second communication line CL2, thereby providing independence for each communication path. It has the advantage of improved stability.

Referring to FIG. 1, the energy storage device 10 may further include a water injection container 300.

Specifically, the water injection container 300 may include a water injection device that can output fire extinguishing liquid to the battery container 200 when a fire occurs in the battery container 200. And, the water injection container 300 may be expressed as a water injection unit (WIU).

The dosing container 300 is connected to the master controller 120 through a third communication line (CL3), and may be configured to output the digestive juice inside to the battery rack when receiving a dosing command from the master controller 120.

For example, the pouring container 300 may include a control unit and a pouring unit. When the control unit receives a watering command from the master controller 120, it can control the watering unit to output digestive fluid.

Additionally, the water dosing unit may be connected to the RBMS 220 included in the battery container 200 through a pipeline. Specifically, the water dosing unit may be connected to each battery module included in the RBMS 220 through a pipeline. Here, the pipeline may be equipped with a breakable bulb. For example, the bulb may be configured to be breakable depending on the temperature of the connected battery rack or battery module.

For example, if a fire occurs in the battery container 200, the control unit may receive a watering command. The control unit may control the pouring unit so that the pouring unit outputs fire extinguishing liquid into the pipeline. In this case, the bulb corresponding to the battery module where the fire occurred will have a damaged bulb, so fire extinguishing liquid may flow into the battery module through the pipeline.

In the embodiment of Figure 3, the master controller 120 may be connected to communicate with the water dosing container 300 through the third communication line (CL3). For example, the third communication line CL3 may be a communication line applied to a third communication protocol. As a specific example, the third communication line CL3 may be a communication line for Modbus RTU communication.

The energy storage device 10 according to an embodiment of the present invention establishes an independent communication path using each of the first communication line (CL1), the second communication line (CL2), and the third communication line (CL3), so that each It has the advantage of securing communication stability for the communication path.

FIG. 4 is a diagram schematically showing a third embodiment of the energy storage device 10 according to an embodiment of the present invention.

Referring to Figure 4, the energy storage device 10 may include a plurality of control containers (100, 101), a plurality of battery containers (200a, 200b, 201a, 201b), and a plurality of water injection containers (300, 301). there is. Specifically, the energy storage device 10 according to the embodiment of FIG. 4 includes a second control container 101, a second battery container 201a, 201b, and a second control container 101 in the energy storage device 10 according to the embodiment of FIG. 3. 2 This may be an embodiment that further includes a water pouring container 301.

The second control container 101 may be configured to include a second master controller 121 and a second BBMS (131).

Specifically, the second master controller 121 may be configured to be connected to the BSC 110 through the first communication line CL1. That is, the second control container 101 may not include the BSC 110 included in the first control container 100.

For example, in the embodiment of Figure 4, BSC 110 may be included only in first control container 100. Additionally, the first master controller 120 and the second master controller 121 may be connected to the BSC 110 to enable communication through the first communication line CL1. That is, even if the energy storage device 10 is provided with a plurality of control containers 100 and 101, the BSC 110, which is the highest level controller, may be included in only one control container 100.

For example, the first master controller 120 may transmit first control container information obtained from components included in the first control container 100 to the BSC 110 through the first communication line CL1. Independently of this, the second master controller 121 may transmit the second control container information obtained from the components included in the second control container 101 to the BSC 110 through the first communication line CL1. there is. The BSC 110 may control the first master controller 120 to control each configuration included in the first control container 100 based on the first control container information. Additionally, the BSC 110 may control the second master controller 121 to control each configuration included in the second control container 101 based on the second control container information.

The second BBMS 131 may be configured to be connected to the BSC 110 through a second communication line CL2.

For example, in the embodiment of FIG. 4, the second BBMS 131 may be connected to the BSC 110 through the second communication line CL2.

The second battery container 201 may be configured to include a second slave controller 211 and a second RBMS (221). For example, in the embodiment of FIG. 4, the first control container 100 may be connected to the first battery containers 200a and 200b, and the second control container 101 may be connected to the second battery containers 201a and 201b. there is.

The second slave controller 211 may be configured to be connected to the second master controller 121 through the first communication line (CL1). Additionally, the second RBMS 221 is connected to the second BBMS 131 through a second communication line CL2 and may be configured to monitor the status of the corresponding second battery rack.

The second dosing container 301 is connected to the second master controller 121 through a third communication line (CL3), and when a dosing command is received from the second master controller 121, the fire extinguishing liquid inside is transferred to the second battery rack. It can be configured to output.

Specifically, the communication structure between the master controller 121 and the slave controller 211, the communication structure between the BBMS 131 and the RBMS 221, and the communication structure between the master controller 121 and the water container 301 are the communication structures described above. It may be the same as For example, in the embodiment of FIG. 4, the second master controller 121 and the first slave controllers 210a and 210b are connected through the first communication line CL1. 2 Slave controllers 211a and 211b may be connected through the first communication line CL1. In addition, in the same way that the first BBMS 130 and the first RBMS (220a, 220b, 220c, 220d) are connected through the second communication line (CL2), the second BBMS (131) and the second RBMS (221a, 221b) , 221c, 221d) may be connected through the second communication line (CL2). In addition, in the same way that the first master controller 120 and the first dosing container 300 are connected through the third communication line (CL3), the second master controller 121 and the second dosing container 301 are connected to the third dosing container 301. It can be connected via a communication line (CL3).

The energy storage device 10 according to an embodiment of the present invention has a structural feature in which the control containers 100 and 101, the battery containers 200 and 201, and the water injection containers 300 and 301 can be expanded and connected. Therefore, as needed, more battery containers 200 and 201 can be connected to the energy storage device 10, and the energy storage device 10 can be generally monitored and controlled through one BSC 110. . In other words, the energy storage device 10 has the advantage of being scalable and capable of integrated control management through one BSC 110.

Although the present invention has been described above with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the description below will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalence of the patent claims.

In addition, the present invention described above is capable of various substitutions, modifications and changes without departing from the technical spirit of the present invention to those of ordinary skill in the technical field to which the present invention pertains. It is not limited by the drawings, and all or part of each embodiment can be selectively combined so that various modifications can be made.

10: Energy storage device
20:PCS
100: control container, first control container
101: second control container
110:BSC
120: master controller, first master controller
121: Second master controller
130: BBMS, 1st BBMS
131: 2nd BBMS
200: battery container
200a, 200b: battery container, first battery container
201a, 201b: second battery container
210: Slave controller
210a, 210b: slave controller, first slave controller
211a, 211b: second slave controller
220a, 220b, 220c, 220d: RBMS, first RBMS
221a, 221b, 221c, 221d: 2nd RBMS
300: pouring container, first pouring container
301: second water container

Claims (10)

BSC(Battery system controller); a master controller configured to be connected to the BSC through a first communication line; and a control container configured to include a bank battery management system (BBMS) configured to be connected to the BSC through a second communication line; and
a slave controller configured to be connected to the master controller through the first communication line; and a battery container connected to the BBMS through the second communication line and configured to include a Rack battery management system (RBMS) configured to monitor the status of a corresponding battery rack.
According to paragraph 1,
The master controller is,
When the battery containers are provided in plurality, the energy storage device is configured to be connected to a plurality of slave controllers included in the plurality of battery containers through the first communication line.
According to paragraph 2,
The master controller is,
An energy storage device configured to be directly connected to each of the plurality of slave controllers in a home run manner through the first communication line.
According to paragraph 1,
The BBMS is,
When the battery containers are plural, the energy storage device is configured to be connected to a plurality of RBMS included in the plurality of battery containers through the second communication line.
According to paragraph 4,
The BBMS is,
An energy storage device configured to be connected in series with the plurality of RBMS in a daisy chain manner through the second communication line.
According to paragraph 1,
The BSC is,
An energy storage device configured to be connected to an external power conversion system (PCS) through the first communication line.
According to paragraph 1,
The energy storage device further comprises a pouring container connected to the master controller through a third communication line and configured to output the digestive fluid contained therein to the battery rack upon receiving a pouring command from the master controller.
According to paragraph 1,
a second master controller configured to be connected to the BSC through the first communication line; and a second control container configured to include a second BBMS configured to be connected to the BSC via the second communication line.
According to clause 8,
a second slave controller configured to be connected to the second master controller through the first communication line; and a second battery container connected to the second BBMS through the second communication line and configured to include a second RBMS configured to monitor the status of the corresponding second battery rack. .
According to clause 9,
It is connected to the second master controller through a third communication line, and further comprises a second dosing container configured to output the digestive juice inside to the second battery rack when receiving a dosing command from the second master controller. energy storage device.

Images