KR20200108587A - Duplication protection device for protecting energy storage device and energy storage system having the device - Google Patents

Abstract

Disclosed is a duplexing protection device which can be electrically connected to an energy storage device to protect the energy storage device, and an energy storage system having the same. The energy storage system comprises an energy storage device and a duplexing protection device. The energy storage device receives external power from an external power device to be charged or provide charging power to the external power device, can be controlled by receiving a battery control signal from an external network device, and generates operation state information to be provided to the external network device. The duplexing protection device can perform a monitoring process of monitoring a state of the energy storage device while connecting between the external power device and the energy storage device while connecting between the external network device and the energy storage device. Accordingly, the duplexing protection device can monitor the energy storage device and protect the energy storage device in duplicate in addition to a self-monitoring function of the energy storage device.

Description

A redundant protection device for protecting an energy storage device, and an energy storage system having the same TECHNICAL FIELD {DUPLICATION PROTECTION DEVICE FOR PROTECTING ENERGY STORAGE DEVICE AND ENERGY STORAGE SYSTEM HAVING THE DEVICE}

The present invention relates to a redundant protection device and an energy storage system having the same, and more particularly, to a redundancy protection device for protecting a battery storage device composed of a plurality of battery modules, and an energy storage system having the same.

The Energy Storage System (ESS) mainly uses batteries. That is, the energy storage system may include a battery rack composed of a plurality of battery modules. In such an energy storage system, an accident such as a fire or an explosion may occur due to a control pattern of a battery, a defect in the battery, or other external factors.

The current energy storage system performs accident handling by a battery management system (BMS), but the device for secondary protection or redundancy protection is weak. In addition, even if the battery management system operates properly, a malfunction of the battery with peripheral devices may occur, and thus complete protection of the energy storage system cannot be guaranteed. Therefore, there is a need for a device that independently protects it from the existing battery management system.

Meanwhile, as a conventional technology for protecting such an energy storage system, Korean Patent Registration No. 10-1785662 (announced on October 17, 2017) discloses a battery protection circuit device for a battery energy storage system including a backup power function. Battery protection circuit device for battery energy storage system including backup power function to cut off the power supply to the battery energy storage system battery protection circuit device including backup power function from the battery before the battery is over-discharged 'Is disclosed.

In addition, as another conventional technique for protecting the energy storage system, Korean Patent Registration No. 10-1740242 (announced on May 26, 2017) states,'If an abnormal state of the battery pack is detected, the mechanical contact switch unit is first turned off. Disclosed is a protection circuit module for a high voltage battery pack and an energy storage system using the same, which can safely block a circuit by suppressing the occurrence of a blocking arc by turning off a non-contact switch unit after a certain period of time.

However, the above method is a method of changing or newly configuring the protection circuit, and eventually it is necessary to newly design and manufacture the energy storage system. In other words, it is difficult to protect the energy storage system already installed in the above manner.

Accordingly, the present invention is to solve this problem, and an object to be solved of the present invention is to provide a redundant protection device that can be electrically connected to and protected by an energy storage device.

In addition, another object to be solved by the present invention is to provide an energy storage system including the redundant protection device.

The redundancy protection device according to an embodiment of the present invention includes a switch unit, a monitoring unit, and a main control unit.

The switch unit may connect an external power device and an energy storage device to transfer external power provided from the external power device to the energy storage device or provide charging power stored in the energy storage device to the external power device. have. The monitoring unit may connect an external network device and the energy storage device to transmit a battery control signal provided from the external network device to the energy storage device, and transmit operation state information provided from the energy storage device to the external network device. Can be delivered to. The main control unit may control the switch unit, receive the operation state information from the monitoring unit, directly measure the state of the energy storage device, and perform a monitoring process of monitoring the state of the energy storage device. have. The energy storage device may be provided with the external power to charge or provide the charging power to the external power device, may be controlled by receiving the battery control signal, and generate the operation state information to the external network device Can be provided as The monitoring process monitors the state of the energy storage device using at least one of information generated by directly measuring the state of the energy storage device and the operation state information, and when it is determined that the state of the energy storage device is in an abnormal state, the switch By controlling to generate a warning message or to block the connection between the external power device and the energy storage device.

Subsequently, the energy storage system according to an embodiment of the present invention includes an energy storage device and a redundant protection device.

The energy storage device may be charged by receiving external power from an external power device to charge or provide charging power to the external power device, and may be controlled by receiving a battery control signal from an external network device, and generating operation state information It can be provided to the external network device.

The redundancy protection device connects the external power device and the energy storage device to transfer the external power provided from the external power device to the energy storage device or transfer the charging power stored in the energy storage device to the external device. It may be provided as a power device, and the battery control signal provided from the external network device may be transmitted to the energy storage device by connecting between the external network device and the energy storage device, and the battery control signal provided from the energy storage device Operation state information may be transmitted to the external network device, and a monitoring process of monitoring the state of the energy storage device may be performed.

The monitoring process monitors the state of the energy storage device using at least one of information generated by directly measuring the state of the energy storage device and the operation state information, and if it is determined that it is in an abnormal state as a result of monitoring, a warning message To generate or cut off the connection between the external power device and the energy storage device.

The energy storage device may include a plurality of battery modules, a battery control unit, and a plurality of battery temperature sensors. The battery modules may store the charging power. The battery control unit may charge the battery modules using the external power to generate the charging power or discharge the battery modules to provide the charging power to the outside, and use the battery control signal to discharge the battery modules. The operation of the battery modules may be controlled, and the operation state information may be generated by sensing the operation state of the battery modules and provided to the external network device. The battery temperature sensors may be disposed adjacent to the battery modules, and may be provided as the redundant protection device after measuring battery temperatures in the battery modules.

The energy storage device is disposed in a battery arrangement space in which the battery modules are arranged, and after measuring the temperature in the battery arrangement space (hereinafter referred to as'ambient temperature'), the ambient temperature that can be provided to the redundant protection device It may further include a sensor.

Each of the battery temperatures may include a temperature at an upper portion of each of the battery modules (hereinafter, referred to as'upper temperature') and a temperature at a lower portion of each of the battery modules (hereinafter referred to as'lower temperature'). I can. In this case, each of the battery temperature sensors may include an upper temperature sensor and a lower temperature sensor. The upper temperature sensor may be disposed adjacent to an upper portion of each of the battery modules, and may measure the upper temperature and provide it to the redundant protection device. The lower temperature sensor may be disposed adjacent to a lower portion of each of the battery modules, and may measure the lower temperature and provide the redundant protection device.

The redundancy protection device may include a temperature multi-channel and a redundancy protection control unit. The temperature multi-channel may each receive the battery temperatures from the battery temperature sensors, and may receive the ambient temperature from the ambient temperature sensor. The redundancy protection control unit connects the external power device and the energy storage device to transfer the external power provided from the external power device to the energy storage device or transfer the charging power stored in the energy storage device to the external device. It may be provided as a power device, and the battery control signal provided from the external network device may be transmitted to the energy storage device by connecting between the external network device and the energy storage device, and the battery control signal provided from the energy storage device Operation state information may be transmitted to the external network device, and the monitoring process may be performed. At this time, the monitoring process monitors the state of the energy storage device using the battery temperatures provided from the temperature multi-channel, the ambient temperature, and the operation state information, and if it is determined that the monitoring result is in the abnormal state, the A warning message may be generated or a connection between the external power device and the energy storage device may be cut off.

The redundancy protection device may further include a black box capable of storing information when the energy storage device is in the abnormal state (hereinafter, referred to as “abnormal state information”). At this time, the monitoring process monitors the state of the energy storage device using the battery temperatures provided from the temperature multi-channel, the ambient temperature, and the operation state information, and if it is determined that the monitoring result is in the abnormal state, the While storing the abnormal state information in a black box, the warning message may be generated or a connection between the external power device and the energy storage device may be blocked.

The redundancy protection device may include a switch unit, a monitoring unit, and a main control unit. The switch unit may connect or cut off the external power device and the energy storage device, and when connecting between the external power device and the energy storage device, the external power provided from the external power device is transferred to the energy storage device. The charging power delivered to or stored in the energy storage device may be provided to the external power device. The monitoring unit may connect between the external network device and the energy storage device to transmit the battery control signal provided from the external network device to the energy storage device, and transmit the operation state information provided from the energy storage device. It can be delivered to an external network device. The main control unit may control the switch unit, receive the battery temperatures and the ambient temperature from the temperature multi-channel, receive the operation state information from the monitoring unit, and perform the monitoring process. At this time, the monitoring process monitors the state of the energy storage device using the battery temperatures provided from the temperature multi-channel, the ambient temperature, and the operation state information, and if it is determined that the monitoring result is in the abnormal state, the The switch unit may be controlled to generate the warning message while storing the abnormal state information in a black box or to cut off a connection between the external power device and the energy storage device.

The redundancy protection device may further include a memory unit controlled by the main control unit to store various types of information.

The main controller may further perform a learning process of generating driving pattern learning information of the battery modules and storing them in the memory unit.

The monitoring process determines whether the energy storage device is in the abnormal state by comparing the battery temperatures, the ambient temperature, and the operation state information provided from the temperature multi-channel with the driving pattern learning information, and the abnormality When it is determined that it is in a state, the switch unit may be controlled to generate the warning message while storing the abnormal state information in the black box or to cut off the connection between the external power device and the energy storage device.

Each of the driving pattern learning information may be driving pattern information according to a charging rate of each of the battery modules.

The energy storage device may further include a temperature control module disposed in the battery arrangement space and controlled by the main controller to control the ambient temperature.

Each of the driving pattern learning information may be driving pattern information according to the ambient temperature and a charging rate of each of the battery modules.

The learning process is to control the temperature control module to change the ambient temperature, learn driving pattern information according to the charging rate of each of the battery modules, and then generate the driving pattern learning information to be stored in the memory unit. I can.

The learning process controls the temperature control module to change the ambient temperature, learns driving pattern information according to the charging rate of each of the battery modules a plurality of times, and generates the driving pattern learning information to the memory unit. Can be saved.

Each of the driving pattern learning information may include temperature pattern learning information during charging, temperature pattern learning information when discharging, and current and voltage pattern learning information during charging. The temperature pattern learning information during charging may be generated by performing a process of measuring the temperature of the battery a plurality of times whenever the charging rate of each of the battery modules increases while changing the ambient temperature. The temperature pattern learning information during discharging may be generated by performing a process of measuring the battery temperature a plurality of times whenever the charging rate of each of the battery modules decreases while changing the ambient temperature. When the charging rate of each of the battery modules increases while changing the ambient temperature, the charging current and voltage pattern learning information is measured multiple times by measuring the charging current and the charging voltage of each of the battery modules. It can be created by performing.

The temperature pattern learning information during charging measures the temperature of the battery whenever the charging rate of each of the battery modules increases by a first set value while changing the ambient temperature, and charging for each of the battery modules When the time charging rate is greater than or equal to the first reference charging rate, it may be generated by performing a process of measuring the battery temperature multiple times each time the second set value increases.

The temperature pattern learning information upon discharging may be generated by performing a process of measuring the battery temperature a plurality of times whenever the charging rate of each of the battery modules decreases by a third set value while changing the ambient temperature. have.

The current and voltage pattern learning information during charging determines the charging current and charging voltage of each of the battery modules whenever the charging rate of each of the battery modules increases by a fourth set value while changing the ambient temperature. When the charging rate for each of the battery modules is greater than or equal to the second reference charging rate, the process of measuring the charging current and the charging voltage in each of the battery modules is performed a plurality of times each time the fifth set value increases. Can be created.

The operating state information may include measurement information on a charging current and a charging voltage in each of the battery modules.

The monitoring process may include a temperature monitoring process during charging, a temperature monitoring process during discharge, and a current and voltage monitoring process during charging. The charging temperature monitoring process may monitor the state of the energy storage device by comparing the battery temperatures and the ambient temperature provided from the temperature multi-channel with temperature pattern learning information during charging. The discharging temperature monitoring process may monitor the state of the energy storage device by comparing the battery temperatures and the ambient temperature provided from the temperature multi-channel with temperature pattern learning information upon discharging. The charging current and voltage monitoring process may monitor the state of the energy storage device by comparing the ambient temperature and the operating state information provided from the temperature multi-channel with current and voltage pattern learning information during charging.

The operating state information may include a self-monitoring result of the battery controller monitoring each of the battery modules. At this time, the monitoring process is a battery control warning when the monitoring result information according to at least one of the charging temperature monitoring process, the discharging temperature monitoring process, and the charging current and voltage monitoring process is different from the self-monitoring result. A battery control monitoring process for generating a message may be further included.

The black box may include a black box memory unit, a black box control unit, and a backup power supply unit. The black box control unit may receive the abnormal state information from the redundancy protection control unit and store the information in the black box memory unit. The backup power supply unit may provide the driving power to the black box control unit as a spare in case an external power supply cannot provide driving power to the black box control unit.

As described above, according to the redundancy protection device and the energy storage system having the same according to the present invention, in addition to self-monitoring of the state of the battery modules by the battery control unit included in the energy storage device, the external power device and the external network device and the energy storage As the redundant protection device installed between the devices monitors the state of the battery modules secondly, the battery modules can be double-protected.

In addition, as the redundancy protection device monitors the operation state of the energy storage device and stores the monitoring result and the action result in the black box every predetermined time, the manager uses the information stored in the black box to save the energy. You can see information about what caused the storage device to malfunction or fire, and what actions were taken accordingly.

1 is a block diagram illustrating an energy storage system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating the energy storage system of FIG. 1 in detail.
3 is a block diagram showing in detail a redundancy protection control unit of the redundancy protection device of FIG. 2.
4 is a block diagram showing in detail a black box among the redundant protection devices of FIG. 2.
5 is a conceptual diagram illustrating a process performed by the redundancy protection control unit of FIG. 3.
FIG. 6 is a diagram illustrating a process of acquiring temperature pattern learning information during charging during the learning process of FIG. 5.
FIG. 7 is a diagram illustrating a part of temperature pattern learning information during charging acquired through the process according to FIG. 6.
FIG. 8 is a diagram for explaining a process of acquiring temperature pattern learning information during discharge in the learning process of FIG. 5.
FIG. 9 is a diagram illustrating a part of temperature pattern learning information during discharge obtained through the process according to FIG. 8.
10 is a diagram illustrating a process of acquiring current and voltage pattern learning information during charging during the learning process of FIG. 5.
FIG. 11 is a diagram illustrating a portion of current and voltage pattern learning information during charging acquired through the process of FIG. 10.

In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text.

However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features or It is to be understood that the presence or addition of numbers, steps, actions, components, parts, or combinations thereof does not preclude the possibility of preliminary exclusion.

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

1 is a block diagram illustrating an energy storage system according to an embodiment of the present invention.

Referring to FIG. 1, the energy storage system 1000 according to the present embodiment is a system that stores energy by being connected to an external power device, and may be included in, for example, a power generation management system.

The power generation management system is connected to the power generation system 10 to transmit the power generated by the power generation system 10 to the external power network 50, and is connected to the monitoring system 60 through a wired/wireless communication network to exchange signals. In addition, it may be a system that can be controlled by the monitoring system 60. Here, the power generation system 10 may be composed of a plurality of photovoltaic modules connected in series.

Specifically, for example, the power generation management system may include a connection panel module 20, an inverter 30, and a circuit breaker 40, including the energy storage system 400. The connection panel module 20 may be connected to the power generation system 10 to receive power from the power generation system 10 and output it to the inverter 30. The inverter 30 may be connected to the connection panel module 20 to convert power output from the connection panel module 20 into commercial power and output it to the external power grid 50. The circuit breaker 40 may connect between the inverter 30 and the external power grid 50, and transmit or cut off the commercial power output from the inverter 30 to the external power grid 50. The energy storage system 1000 is connected to the inverter 30 to charge the commercial power output from the inverter 30, and is connected to the circuit breaker 40 to transfer the charged power to the circuit breaker 40. It can be transmitted to the external power grid 50 through.

Meanwhile, the power generation management system includes a remote connection unit 70 connecting the monitoring system 60 and the connection panel module 20, the inverter 30, the circuit breaker 40, and the energy storage system 400. ) May be further included. In other words, the monitoring system 60 can access and control the connection panel module 20, the inverter 30, the circuit breaker 40, and the energy storage system 1000 through the remote connection unit 70, respectively. I can.

The energy storage system 1000 may include an energy storage device 100 and a redundancy protection device 200.

The energy storage device 100 may receive and charge external power from an external power device, for example, the inverter 30, and provide charging power to the external power device, and an external network device, for example, the monitoring The battery control signal may be received from the system 60 and controlled, and operation state information may be generated and provided to the external network device. Here, the external power device may be the inverter 30 or the circuit breaker 40, and the external network device may be the monitoring system 60 connected through the remote connection unit 70.

The redundancy protection device 200 connects the external power device and the energy storage device 100 to transfer external power provided from the external power device to the energy storage device 100 or the energy storage device 100 The charging power stored in) can be provided to the external power device. In addition, the redundancy protection device 200 may connect between the external network device and the energy storage device 100 to transmit a battery control signal provided from the external network device to the energy storage device 100, and the Operation state information provided from the energy storage device 100 may be transmitted to the external network device. In addition, the redundancy protection device 200 may directly measure the state of the energy storage device 100 to obtain a measured value.

Meanwhile, the redundancy protection device 200 may perform a monitoring process for monitoring the state of the energy storage device 100, for example, temperature, charging current, and charging voltage. For example, the monitoring process uses at least one of measurement value information generated by directly measuring the state of the energy storage device 100 and operation state information transmitted to the external network device to determine the state of the energy storage device. It is possible to monitor, determine whether there is an abnormal state as a result of monitoring, and perform the monitoring process according to the determination result.

In addition, the monitoring process may perform a warning mode when it is determined that it is in a first abnormal state, and may perform a blocking mode when it is determined that it is in a second abnormal state higher than the first abnormal state. Here, in the warning mode, a warning alarm may be generated through a speaker or a warning message may be generated and transmitted to an administrator terminal (not shown). In the blocking mode, the connection between the external power device and the energy storage device 100 may be cut off while generating the warning alarm or transmitting the warning message to the administrator terminal. As a result, in the cut-off mode, external power provided from the external power device is blocked from being transferred to the energy storage device 100, and the charging power stored in the energy storage device 100 is reduced to the external power device. It can be blocked so that it is not provided.

FIG. 2 is a block diagram illustrating the energy storage system of FIG. 1 in detail.

2, the energy storage device 100 includes a plurality of battery modules 110, a battery control unit 120, a plurality of battery temperature sensors 130 and 140, an ambient temperature sensor 150, and a temperature. A control module 160 may be included.

The battery modules 110 are arranged at regular intervals in a battery housing (not shown) having a battery arrangement space, and store external power provided from the external power device, for example, the inverter 30 to store charging power. Can be generated. Here, the battery modules 110 may be gathered to form one battery rack.

The battery control unit 120 may charge the battery modules 110 by transferring external power provided from the external power device to the battery modules 110, and discharge the battery modules 110 Charging power stored in the battery modules 110 may be externally provided, for example, to an external power grid 50 connected to the circuit breaker 40. In addition, the battery controller 120 controls the operation of the battery modules 110 by using a battery control signal provided from the external network device, for example, the monitoring system 60 connected to the remote connection unit 70. Can be controlled. In addition, the battery control unit 120 may detect the operating state of the battery modules 110 to generate operating state information on the operating state of the battery modules 110 and provide it to the external network device. Here, the operation state information may include measurement information on a charging current and a charging voltage in each of the battery modules, and a self-monitoring result in which the battery controller monitors each of the battery modules.

The battery temperature sensors 130 and 140 are respectively disposed adjacent to the battery modules 110 in the battery arrangement space of the battery housing, and after measuring the battery temperatures in the battery modules 110, respectively, the It can be provided as a redundant protection device 200.

In this embodiment, each of the battery temperatures is a temperature at the top of each of the battery modules 110 (hereinafter, referred to as'upper temperature') and a temperature at the bottom of each of the battery modules 110 (hereinafter , May include a'lower temperature'). In this case, each of the battery temperature sensors 130 and 140 may include an upper temperature sensor 130 for generating the upper temperature and a lower temperature sensor 140 for generating the lower temperature.

The upper temperature sensor 130 may be disposed adjacent to an upper portion of each of the battery modules 110, and may measure the upper temperature and provide it to the redundancy protection device 200. The lower temperature sensor 140 may be disposed adjacent to the lower part of each of the battery modules 110, and may measure the lower temperature and provide it to the redundancy protection device 200.

The ambient temperature sensor 150 is disposed in the battery arrangement space of the battery housing, measures the temperature in the battery arrangement space (hereinafter, referred to as'ambient temperature'), and then provides it to the redundancy protection device 200. I can.

The temperature control module 160 is disposed in the battery arrangement space of the battery housing and is controlled by the redundancy protection device 200 to control the ambient temperature.

Subsequently, the redundancy protection device 200 may include a temperature multi-channel 210, a redundancy protection control unit 220 and a black box 230.

The temperature multi-channel 210 receives the battery temperatures from the battery temperature sensors 130 and 140 in real time or at a predetermined time, respectively, and receives the ambient temperature from the ambient temperature sensor 150 in real time or at a predetermined time. And, the received battery temperatures and the ambient temperature may be provided to the redundancy protection control unit 220.

The redundancy protection control unit 220 connects between the external power device and the battery control unit 120 to transfer external power provided from the external power device to the battery control unit 120 or the battery control unit 120 Charging power stored in the battery modules 110 may be provided to the external power device.

In addition, the redundancy protection control unit 220 may connect between the external network device and the battery control unit 120 to transmit a battery control signal provided from the external network device to the battery control unit 120, and the battery Operation state information about the operation state of the battery modules 110 provided from the control unit 120 may be transmitted to the external network device.

In addition, the redundancy protection control unit 220 may perform the monitoring process. In this case, the monitoring process uses the battery temperatures and the ambient temperature provided from the temperature multi-channel 210, and operation state information on the operation state of the battery modules 110 to the energy storage device 100 It is possible to monitor the state of, determine whether the monitoring result is in an abnormal state, and perform the monitoring process according to the determination result.

Specifically, the redundancy protection control unit 220 may determine whether the monitoring result is in the first abnormal state or the second abnormal state, and perform the monitoring process according to the determination result. In this case, the monitoring process may perform the warning mode when it is determined that it is in the first abnormal state, and may perform the blocking mode when it is determined that it is in the second abnormal state. Meanwhile, the first abnormal state may mean a state in which at least one of the battery modules 110 may malfunction or a fire may occur due to an increase in temperature. The second abnormal state may refer to a state in which at least one of the battery modules 110 is malfunctioning or a temperature rises considerably high, immediately before a fire occurs or a fire occurs.

The black box 230 may be connected to the redundancy protection control unit 220 to store process processes and results performed by the redundancy protection control unit 220 at set intervals. For example, the black box 230 receives and stores operation state information when the energy storage device 100 is in an abnormal state from the redundancy protection control unit 220 and result information processed according to the abnormal state. I can. That is, when it is determined that the monitoring process is in the first abnormal state or the second abnormal state, the operation state information when the energy storage device 100 is in the abnormal state and result information processed according to the abnormal state are stored. It may be provided to the black box 230 and stored. In this way, using the information stored in the black box 230, the manager checks information on what caused a malfunction or fire in the energy storage device 100, and what measures have been taken accordingly. It can be used as a reference material for system improvement of the storage device 100.

3 is a block diagram showing in detail a redundancy protection control unit of the redundancy protection device of FIG. 2.

Referring to FIG. 3, the redundancy protection device 200 may include a switch unit 222, a monitoring unit 224, and a main control unit 226.

The switch unit 222 may connect or cut off the external power device and the battery control unit 120. Accordingly, when the switch unit 222 connects the external power device and the battery control unit 120, the external power provided from the external power device is transferred to the battery control unit 120 and the battery modules 110 ) May be charged, and charging power stored in the battery modules 110 may be provided from the battery controller 120 and transmitted to the external power device.

The monitoring unit 224 may connect between the external network device and the battery control unit 120 to transmit a battery control signal provided from the external network device to the battery control unit 120, and the battery control unit 120 The operation state information for the battery modules 110 provided from) may be transmitted to the external network device. In addition, the monitoring unit 224 may also provide operation state information on the battery modules 110 to the main control unit 226.

The main control unit 226 may control the switch unit 222 to connect or cut off the external power device and the battery control unit 120, and control the temperature control module 160 to control the ambient temperature. Can be controlled. Receives the battery temperatures and the ambient temperature from the temperature multi-channel 220, receives operation state information on the battery modules 110 from the monitoring unit 224, and performs the monitoring process. have.

The monitoring process stores the energy by using the battery temperatures and the ambient temperature provided from the temperature multi-channel 220 and the operating state information for the battery modules 110 provided from the monitoring unit 224. It monitors the state of the device 200, determines whether it is in the first or second abnormal state as a result of monitoring, and performs the warning mode when it is determined that it is in the first abnormal state, and If it is determined that there is, the blocking mode may be performed. In this case, in the cutoff mode, the switch unit 222 may be controlled to cut off the connection between the external power device and the battery control unit 120.

In this embodiment, the redundancy protection device 200 may further include a memory unit 228 controlled by the main control unit 226 to store various types of information.

In addition, the main control unit 226 may further perform a learning process of generating driving pattern learning information of the battery modules 110 and storing the driving pattern learning information in the memory unit 228. In this case, each of the driving pattern learning information may be driving pattern information according to the ambient temperature and a charging rate of each of the battery modules.

Meanwhile, the main control unit 226 may perform the learning process first and then perform the monitoring process using the driving pattern learning information generated in the learning process. At this time, the monitoring process includes the battery temperatures and the ambient temperature provided from the temperature multi-channel 220, and the operating state information on the battery modules 110 provided from the monitoring unit 224, the learning process. It is possible to determine whether the energy storage device is in the abnormal state by comparing it with the driving pattern learning information generated through and to perform the warning mode or the blocking mode according to the determination result.

4 is a block diagram showing in detail a black box among the redundant protection devices of FIG. 2.

Referring to FIG. 4, the black box 230 may include a black box memory unit 232, a black box control unit 234, a backup power supply unit 236, and a black box housing unit 238.

The black box control unit 234 may receive information from the redundancy protection control unit 216 at set intervals and store the information in the black box memory unit. For example, the black box control unit 234 receives operation state information when the energy storage device 100 is in an abnormal state and result information processed according to the abnormal state, and stores the information in the black box memory unit. I can.

When receiving operation state information when the energy storage device 100 is in an abnormal state and result information processed according to the abnormal state from the redundancy protection control unit 216, the corresponding information is stored in the black box memory unit. I can make it.

In case the backup power supply unit 236 fails to provide driving power to the black box control unit 234 from an external power supply 52, for example, the external power grid 50 or the energy storage device 100, Driving power may be provided to the black box control unit 234 in reserve. That is, the backup power supply unit 236 is charging the power provided from the external power supply 52, but when the external power supply 52 fails to provide driving power to the black box control unit 234, the charging power is It can be provided to the black box control unit 234. As a result, even if a power outage occurs, the black box control unit 234 may store information provided from the redundancy protection control unit 216 in the black box memory unit 232 for a predetermined period of time.

The black box housing unit 238 may accommodate and protect the black box memory unit 232, the black box control unit 234, and the backup power supply unit 236 in an internal space. For example, the black box housing part 238 may be manufactured in an explosion-proof and waterproof case structure.

5 is a conceptual diagram illustrating a process performed by the redundancy protection control unit of FIG. 3.

Referring to FIG. 5, the main control unit 226 may perform the learning process first, and then perform the monitoring process using the driving pattern learning information generated in the learning process.

First, in the learning process, the temperature control module 160 is controlled to change the ambient temperature, while learning driving pattern information according to the charging rate of each of the battery modules 110 a plurality of times, and then learning the driving pattern. Information may be generated and stored in the memory unit.

In this embodiment, each of the driving pattern learning information may include temperature pattern learning information during charging, temperature pattern learning information when discharging, and current and voltage pattern learning information during charging.

6 is a diagram for explaining a process of acquiring temperature pattern learning information during charging during the learning process of FIG. 5, and FIG. 7 is a diagram illustrating a part of temperature pattern learning information during charging acquired through the process according to FIG. 6 to be.

6 and 7, the temperature pattern learning information during charging is used to measure the battery temperature whenever the charging rate of each of the battery modules 110 increases while changing the ambient temperature. It may be information generated by performing the process multiple times.

Specifically, if any battery module A of the battery modules 110 is described as an example, the learning process first sets the ambient temperature to T1, and the charging rate when charging the battery module A is a first set value, eg. For example, every 10% increase, the upper and lower temperatures of the battery module A are respectively measured, and when the charging rate of the battery module A is a first reference charging rate, for example, 90% or more, the second Whenever the set value increases by 2%, for example, the process of measuring the upper and lower temperatures of the battery module A is performed n times, and then the ambient temperature is changed to T2, T3, ..., Tm, During charging of the battery module A while performing the process of, temperature pattern learning information may be generated and stored in the memory unit 228. In this case, the temperature pattern learning information when charging the battery module A may include information on a deviation between the upper temperature and the lower temperature of the battery module A.

By applying the above method to all battery modules 110 other than the battery module A, temperature pattern learning information may be generated when charging each of the battery modules and stored in the memory unit 228.

FIG. 8 is a diagram for explaining a process of acquiring temperature pattern learning information during discharge among the learning process of FIG. 5, and FIG. 9 is a diagram illustrating a part of temperature pattern learning information during discharge obtained through the process according to FIG. 8. to be.

8 and 9, the temperature pattern learning information at the time of discharging is used to measure the battery temperature whenever the charging rate of each of the battery modules 110 decreases while changing the ambient temperature. It may be information generated by performing the process multiple times.

Specifically, if any battery module A among the battery modules 110 is described as an example, the learning process first sets the ambient temperature to T1 and the charging rate when discharging the battery module A is a third set value, eg. For example, each 10% decrease, the process of measuring the upper temperature and the lower temperature of the battery module A is performed n times, and then the above process is performed while changing the ambient temperature to T2, T3, ..., Tm. While performing, when the battery module A is discharged, temperature pattern learning information may be generated and stored in the memory unit 228. In this case, the temperature pattern learning information when discharging the battery module A may include information on a deviation between the upper temperature and the lower temperature of the battery module A.

By applying the above method to all battery modules 110 other than the battery module A, temperature pattern learning information may be generated and stored in the memory unit 228 when discharging each of the battery modules.

10 is a diagram for explaining a process of acquiring current and voltage pattern learning information during charging during the learning process of FIG. 5, and FIG. 11 is a part of current and voltage pattern learning information during charging acquired through the process according to FIG. 10 It is a diagram showing.

Referring to FIGS. 10 and 11, the current and voltage pattern learning information at the time of charging is determined by the battery modules whenever the charging rate of each of the battery modules 110 increases while changing the ambient temperature. (110) It may be information generated by measuring the charging current and the charging voltage in each and performing a plurality of times.

Specifically, if any battery module A of the battery modules 110 is described as an example, the learning process first sets the ambient temperature to T1 and the charging rate for charging the battery module A is a fourth set value, eg For example, every 5% increase, the charging current and charging voltage of the battery module A are respectively measured, and when the charging rate for the battery module A is a second reference charging rate, for example, 90% or more, the fifth set value , For example, the process of measuring the charging current and charging voltage of the battery module A is performed n times every 2% increase, and then the above process while changing the ambient temperature to T2, T3, ..., Tm While performing, current and voltage pattern learning information may be generated when charging the battery module A and stored in the memory unit 228.

When the above method is applied to all battery modules 110 other than the battery module A, current and voltage pattern learning information may be generated and stored in the memory unit 228 when charging each of the battery modules.

Referring again to FIG. 5, the monitoring process performed after the learning process may include a temperature monitoring process during charging, a temperature monitoring process during discharge, and a current and voltage monitoring process during charging.

The charging temperature monitoring process compares the battery temperatures and the ambient temperature provided from the temperature multi-channel 220 when the battery modules 110 are being charged with the temperature pattern learning information during charging, and the The state of the energy storage device 100 can be monitored.

Specifically, if any battery module A of the battery modules 110 is described as an example, the temperature monitoring process during charging is performed in real time from the temperature multi-channel 220 when the battery module A is charged. The state of the battery module A may be monitored by comparing the temperature and the upper temperature and the lower temperature of the battery module A with temperature pattern learning information when charging the battery module A. For example, the charging temperature monitoring process includes a temperature allowable range for each ambient temperature, for example, a first temperature allowable range and the first temperature allowable range from the temperature pattern learning information for charging the battery module A. After calculating the second allowable temperature range, the first temperature allowable range and the second allowable temperature range are compared with the ambient temperature provided in real time with the upper temperature and the lower temperature of the battery module A to the battery module A. You can monitor the status. In this case, the charging process temperature monitoring process performs the warning mode when the upper temperature and the lower temperature of the battery module A are out of the first temperature allowable range, and the upper temperature and the lower temperature of the battery module A are When the second temperature is outside the allowable range, the cut-off mode may be performed. Here, the first temperature allowable range is calculated by performing a calculation according to statistical process management (SPC) from temperature pattern learning information when charging the battery module A to generate the first maximum allowable range and then adding the first safety deviation. The second temperature allowable range may be calculated by adding a second safety deviation greater than the first safety deviation to the first maximum allowable range.

In addition, in the charging process, the temperature monitoring process determines the rate of change of the upper temperature and the lower temperature of the battery module A provided in real time from the temperature multi-channel 220 when the battery module A is charged. And comparing with a second reference temperature change rate greater than the first reference temperature change rate, the state of the battery module A may be monitored. In this case, the charging temperature monitoring process performs the warning mode when the rate of change of the upper temperature and the lower temperature of the battery module A is greater than the first reference temperature change rate, and the upper temperature and the lower temperature of the battery module A When the rate of change of is greater than the rate of change of the second reference temperature, the blocking mode may be performed. Meanwhile, the first reference temperature change rate and the second reference temperature change rate are information stored in the memory unit 228, and are generated by measuring the rate of change of the upper and lower temperatures when the battery module A is charging. It may be information extracted from information, or information extracted from characteristic information provided from a manufacturer of the battery module A.

Meanwhile, in the charging process, the temperature monitoring process may perform monitoring for each of the battery modules 110 by applying the above method to all battery modules 110 other than the battery module A.

Subsequently, the discharging temperature monitoring process compares the battery temperatures and the ambient temperature provided from the temperature multi-channel 220 when the battery modules 110 are discharging with the temperature pattern learning information at discharging. The state of the energy storage device 100 may be monitored.

Specifically, if any battery module A among the battery modules 110 is described as an example, the temperature monitoring process at the time of discharging is the surrounding area provided in real time from the temperature multi-channel 220 when the battery module A is discharged. The state of the battery module A may be monitored by comparing the temperature and the upper and lower temperatures of the battery module A with temperature pattern learning information when the battery module A is discharged. For example, the discharging temperature monitoring process includes a temperature allowable range for each ambient temperature, for example, a third temperature allowable range and the third temperature allowable range from the discharge temperature pattern learning information for the battery module A. After calculating the fourth temperature allowable range, the third temperature allowable range and the fourth allowable temperature range are compared with the ambient temperature provided in real time with the upper temperature and the lower temperature of the battery module A to the battery module A. You can monitor the status. At this time, the temperature monitoring process during discharge performs the warning mode when the upper temperature and the lower temperature of the battery module A are out of the third temperature allowable range, and the upper temperature and the lower temperature of the battery module A are When the fourth temperature is out of the allowable range, the cut-off mode may be performed. Here, the third allowable temperature range is calculated by performing a calculation according to statistical process management (SPC) from the temperature pattern learning information when discharging the battery module A to generate a second maximum allowable range and then adding a third safety deviation. The fourth temperature allowable range may be calculated by adding a fourth safety deviation greater than the third safety deviation to the second maximum allowable range.

In addition, the temperature monitoring process at the time of discharging is a predetermined third reference temperature change rate based on the rate of change of the upper temperature and the lower temperature of the battery module A provided in real time from the temperature multi-channel 220 when the battery module A is discharged. And comparing with a fourth reference temperature change rate greater than the third reference temperature change rate, the state of the battery module A may be monitored. In this case, the temperature monitoring process during discharge performs the warning mode when the rate of change of the upper temperature and the lower temperature of the battery module A is greater than the third reference temperature change rate, and the upper temperature and the lower temperature of the battery module A When the change rate of is greater than the fourth reference temperature change rate, the blocking mode may be performed. Meanwhile, the third reference temperature change rate and the fourth reference temperature change rate are information stored in the memory unit 228, and are generated by measuring the rate of change of the upper and lower temperatures when the battery module A discharges a plurality of times. It may be information extracted from information, or information extracted from characteristic information provided from a manufacturer of the battery module A.

Meanwhile, the temperature monitoring process during discharge may apply the above method to all battery modules 110 other than the battery module A to monitor each of the battery modules 110.

Subsequently, the charging current and voltage monitoring process includes the ambient temperature provided from the temperature multi-channel 220 and the battery modules provided from the monitoring unit 224 when the battery modules 110 are being charged. 110) The energy storage device 100 compares the measurement information on the charging current and the charging voltage in each of the battery modules 110 among the operation state information for each with the learning information on the current and voltage pattern during charging. You can monitor the status of

Specifically, if any of the battery modules 110 is described as an example, the charging current and voltage monitoring process is provided in real time from the temperature multi-channel 220 when the battery module A is charged. The battery module A is compared with the ambient temperature and the charging current and the charging voltage for the battery module A provided in real time from the monitoring unit 224 with the current and voltage pattern learning information during charging for the battery module A. You can monitor the status. For example, the charging current and voltage monitoring process includes an allowable range of charging voltage for each charging current according to ambient temperature, for example, a first charging voltage allowable range from learning information of current and voltage pattern when charging for the battery module A. And a second allowable charging voltage range including the first charging voltage allowable range, and then the first charging voltage allowable range and the second charging voltage allowable range, ambient temperature provided in real time, and the battery module A. The state of the battery module A may be monitored by comparing the charging current and the charging voltage. In this case, in the charging current and voltage monitoring process, the charging voltage for the battery module A at the ambient temperature provided in real time and the charging current for the battery module A, the ambient temperature provided in real time and the battery module A When the first charging voltage is out of the allowable range for the charging current for, the warning mode is performed, and the charging voltage for the battery module A at the ambient temperature provided in real time and the charging current for the battery module A is The cut-off mode may be performed when the second charging voltage is out of the allowable range of the ambient temperature and the charging current for the battery module A. Here, the first charging voltage allowable range is calculated according to statistical process management (SPC) from current and voltage pattern learning information when charging the battery module A to generate the maximum voltage allowable range, and then the first voltage safety deviation. The second charge voltage allowable range may be calculated by adding a second voltage safety deviation greater than the first voltage safety deviation to the maximum voltage allowable range.

In addition, the charging current and voltage monitoring process determines the rate of change of the charging voltage for the battery module A provided in real time from the temperature multi-channel 220 when the battery module A is charged. For example, the state of the battery module A may be monitored by comparing the first reference voltage change rate and the second reference voltage change rate greater than the first reference voltage change rate. In this case, the charging current and voltage monitoring process performs the warning mode when the rate of change of the charging voltage for the battery module A is greater than the rate of change of the first reference voltage, and the charging voltage for the battery module A is the second If it is greater than the reference voltage change rate, the blocking mode may be performed. Meanwhile, the first reference voltage change rate and the second reference voltage change rate are information stored in the memory unit 228, and are extracted from the information generated by measuring the rate of change of voltage when the battery module A is charging. It may be information or information extracted from characteristic information provided from the manufacturer of the battery module A.

Meanwhile, in the charging current and voltage monitoring process, the above method may be applied to all battery modules 110 other than the battery module A to monitor each of the battery modules 110.

On the other hand, in the present embodiment, the monitoring process includes a self-monitoring result of the battery control unit 120 monitoring each of the battery modules 110 among the operation state information on the battery modules 110 provided by the monitoring unit. A battery control monitoring process for monitoring the energy storage device 100 may be further included.

The battery control monitoring process is a warning alarm when the monitoring result information according to at least one of the charging temperature monitoring process, the discharging temperature monitoring process, and the charging current and voltage monitoring process is different from the self-monitoring result. Can be generated or a battery control warning message can be generated and transmitted to the administrator terminal. Specifically, in the battery control monitoring process, the self-monitoring result is different from monitoring result information according to at least one of the charging temperature monitoring process, the discharging temperature monitoring process, and the charging current and voltage monitoring process. If it is determined that there is a malfunction or an error in the monitoring function of the battery control unit 120, a warning alarm or a message indicating that there is a problem in the monitoring function of the battery control unit 120 may be generated.

As described above, according to the present embodiment, in addition to the battery control unit 120 included in the energy storage device 100 self-monitoring the state of the battery modules 110, the external power device and the external network As the redundancy protection device 200 mounted between the device and the energy storage device 100 secondaryly monitors the state of the battery modules 110, the battery modules 110 may be double protected. I can.

In addition, as the redundancy protection device 200 stores the result of monitoring while monitoring the operation state of the energy storage device 100 and the result of the action in the black box 230 at every predetermined time, the manager Using the information stored in the black box 230, it is possible to check information on what caused a malfunction or a fire in the energy storage device 100 and what actions were taken accordingly.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those of ordinary skill in the art will have the spirit of the present invention described in the claims to be described later. And it will be appreciated that various modifications and changes can be made to the present invention within a range not departing from the technical field.

1000: energy storage system 100: energy storage device
110: battery module 120: battery control unit
130: upper temperature sensor 140: lower temperature sensor
150: ambient temperature sensor 160: temperature control module
200: redundant protection device 210: temperature multi-channel
220: redundant protection control unit 222: switch unit
224: monitoring unit 226: main control unit
228: memory unit 230: black box

Claims (24)

It is possible to charge by receiving external power from an external power device and provide charging power to the external power device, and control by receiving a battery control signal from an external network device, and generating operation state information to the external network device. Energy storage devices that can be provided; And
Connects between the external power device and the energy storage device to transfer the external power provided from the external power device to the energy storage device or to provide the charging power stored in the energy storage device to the external power device. The battery control signal provided from the external network device may be transmitted to the energy storage device by connecting between the external network device and the energy storage device, and the operation state information provided from the energy storage device may be transmitted to the energy storage device. It can be transmitted to an external network device, and includes a redundant protection device capable of performing a monitoring process for monitoring the state of the energy storage device,
The monitoring process is
The state of the energy storage device is monitored using at least one of information generated by directly measuring the state of the energy storage device and the operation state information, and if it is determined that it is in an abnormal state as a result of monitoring, a warning message is generated or The energy storage system, characterized in that blocking the connection between the external power device and the energy storage device. The method of claim 1,
The energy storage device
A plurality of battery modules capable of storing the charging power;
The battery modules may be charged using the external power to generate the charging power, or the battery modules may be discharged to provide the charging power to the outside, and the operation of the battery modules using the battery control signal A battery control unit capable of controlling the battery module and generating the operation state information by detecting the operation state of the battery modules and providing the information to the external network device; And
And a plurality of battery temperature sensors disposed adjacent to the battery modules, each measuring battery temperatures in the battery modules, and providing them to the redundant protection device. The method of claim 2,
The energy storage device
Further comprising an ambient temperature sensor disposed in the battery arrangement space in which the battery modules are arranged, measuring the temperature in the battery arrangement space (hereinafter, referred to as'ambient temperature') and providing the redundant protection device Energy storage system, characterized in that. The method of claim 3,
Each of the battery temperatures is
Including a temperature at the top of each of the battery modules (hereinafter referred to as'upper temperature') and a temperature at the bottom of each of the battery modules (hereinafter referred to as'lower temperature'),
Each of the battery temperature sensors
An upper temperature sensor disposed adjacent to an upper portion of each of the battery modules and measuring the upper temperature and providing the redundant protection device; And
And a lower temperature sensor disposed adjacent to the lower part of each of the battery modules and measuring the lower temperature and providing the redundant protection device. The method of claim 4,
The redundancy protection device
A temperature multi-channel for each receiving the battery temperatures from the battery temperature sensors and for receiving the ambient temperature from the ambient temperature sensor; And
Connects between the external power device and the energy storage device to transfer the external power provided from the external power device to the energy storage device or to provide the charging power stored in the energy storage device to the external power device. The battery control signal provided from the external network device may be transmitted to the energy storage device by connecting between the external network device and the energy storage device, and the operation state information provided from the energy storage device may be transmitted to the energy storage device. It can be transmitted to an external network device and includes a redundant protection control unit capable of performing the monitoring process,
The monitoring process is
The state of the energy storage device is monitored using the battery temperatures provided from the temperature multi-channel, the ambient temperature, and the operation state information, and if it is determined that it is in the abnormal state as a result of monitoring, the warning message is generated or The energy storage system, characterized in that blocking the connection between the external power device and the energy storage device. The method of claim 5,
The redundancy protection device
Further comprising a black box capable of storing information when the energy storage device is in the abnormal state (hereinafter, referred to as'abnormal state information'),
The monitoring process is
The state of the energy storage device is monitored using the battery temperatures provided from the temperature multi-channel, the ambient temperature, and the operation state information, and if it is determined that it is in the abnormal state as a result of monitoring, the abnormal state is displayed in the black box. And generating the warning message while storing information or blocking a connection between the external power device and the energy storage device. The method of claim 6,
The redundancy protection device
The external power device and the energy storage device may be connected or cut off, and when connecting between the external power device and the energy storage device, the external power provided from the external power device is transferred to the energy storage device, or A switch unit configured to provide the charging power stored in the energy storage device to the external power device;
By connecting between the external network device and the energy storage device, the battery control signal provided from the external network device may be transmitted to the energy storage device, and the operation state information provided from the energy storage device may be transmitted to the external network device. A monitoring unit that can be transferred to; And
And a main control unit capable of controlling the switch unit, receiving the battery temperatures and the ambient temperature from the temperature multi-channel, receiving the operation state information from the monitoring unit, and performing the monitoring process,
The monitoring process is
The state of the energy storage device is monitored using the battery temperatures provided from the temperature multi-channel, the ambient temperature, and the operation state information, and if it is determined that it is in the abnormal state as a result of monitoring, the abnormal state is displayed in the black box. And controlling the switch unit to generate the warning message while storing information or to block a connection between the external power device and the energy storage device. The method of claim 7,
The redundancy protection device
And a memory unit that is controlled by the main control unit to store various types of information. The method of claim 8,
The main control unit
And further performing a learning process of generating driving pattern learning information of the battery modules and storing them in the memory unit. The method of claim 9,
The monitoring process is
It is determined whether the energy storage device is in the abnormal state by comparing the battery temperatures, the ambient temperature and the operating state information provided from the temperature multi-channel with the driving pattern learning information, and determining that the energy storage device is in the abnormal state. Then, the switch unit is controlled to generate the warning message while storing the abnormal state information in the black box or to block a connection between the external power device and the energy storage device. The method of claim 10,
Each of the driving pattern learning information
An energy storage system comprising driving pattern information according to a charging rate of each of the battery modules. The method of claim 11,
The energy storage device
And a temperature control module disposed in the battery arrangement space and controlled by the main controller to control the ambient temperature. The method of claim 12,
Each of the driving pattern learning information
An energy storage system comprising driving pattern information according to the ambient temperature and a charging rate of each of the battery modules. The method of claim 13,
The learning process is
Controlling the temperature control module to change the ambient temperature, learning driving pattern information according to the charging rate of each of the battery modules, and then generating the driving pattern learning information and storing the driving pattern learning information in the memory unit. Energy storage system. The method of claim 14,
The learning process is
Controlling the temperature control module to change the ambient temperature, learning driving pattern information according to the charging rate of each of the battery modules a plurality of times, and then generating the driving pattern learning information and storing the driving pattern learning information in the memory unit. Energy storage system. The method of claim 15,
Each of the driving pattern learning information
Charging temperature pattern learning information generated by performing a process of measuring the temperature of the battery a plurality of times whenever the charging rate of each of the battery modules increases while changing the ambient temperature;
Discharging temperature pattern learning information generated by performing a process of measuring the temperature of the battery a plurality of times each time the charging rate of each of the battery modules decreases while changing the ambient temperature; And
Charging current and voltage patterns generated by measuring the charging current and charging voltage in each of the battery modules a plurality of times each time the charging rate increases when charging each of the battery modules while changing the ambient temperature Energy storage system comprising learning information. The method of claim 16,
The temperature pattern learning information during charging is
As the ambient temperature is changed, the battery temperature is measured whenever the charging rate for each of the battery modules increases by a first set value, and the charging rate for each of the battery modules is charged as a first reference. When the rate is higher than the rate, the energy storage system is generated by performing a process of measuring the battery temperature a plurality of times each time the second set value increases. The method of claim 16,
The temperature pattern learning information during the discharge is
The energy storage system, characterized in that the energy storage system is generated by performing a process of measuring the battery temperature a plurality of times whenever the charging rate of each of the battery modules decreases by a third set value while changing the ambient temperature. The method of claim 16,
The current and voltage pattern learning information during the charging
While changing the ambient temperature, each time the charging rate of each of the battery modules increases by a fourth set value, the charging current and the charging voltage of each of the battery modules are measured, and each of the battery modules is When the charging rate is greater than the second reference charging rate during charging, the energy storage system is generated by performing a process of measuring charging current and charging voltage in each of the battery modules a plurality of times each time the fifth set value increases. The method of claim 16,
The operation status information is
An energy storage system comprising measurement information on a charging current and a charging voltage in each of the battery modules. The method of claim 16,
The monitoring process is
A charging temperature monitoring process for monitoring a state of the energy storage device by comparing the battery temperatures and the ambient temperature provided from the temperature multi-channel with temperature pattern learning information during charging;
A discharge temperature monitoring process for monitoring a state of the energy storage device by comparing the battery temperatures and the ambient temperature provided from the temperature multi-channel with temperature pattern learning information during the discharge; And
And a charging current and voltage monitoring process for monitoring a state of the energy storage device by comparing the ambient temperature and the operating state information provided from the temperature multi-channel with current and voltage pattern learning information during charging. Energy storage system. The method of claim 21,
The operation status information is
The battery control unit includes a self-monitoring result of monitoring each of the battery modules,
The monitoring process is
Battery control for generating a battery control warning message when monitoring result information according to at least one of the charging temperature monitoring process, the discharging temperature monitoring process, and the charging current and voltage monitoring process is different from the self-monitoring result Energy storage system, characterized in that it further comprises a monitoring process. The method of claim 6,
The black box is
A black box memory unit;
A black box control unit configured to receive the abnormal state information from the redundancy protection control unit and store the data in the black box memory unit; And
And a backup power supply unit capable of providing the driving power to the black box control unit in reserve in case an external power supply cannot provide driving power to the black box control unit. A switch unit that connects between an external power device and an energy storage device to transfer external power provided from the external power device to the energy storage device or to provide charging power stored in the energy storage device to the external power device ;
By connecting between an external network device and the energy storage device, a battery control signal provided from the external network device may be transmitted to the energy storage device, and operation state information provided from the energy storage device may be transmitted to the external network device. Monitoring unit; And
A main control unit capable of controlling the switch unit, receiving the operation state information from the monitoring unit, directly measuring the state of the energy storage device, and performing a monitoring process of monitoring the state of the energy storage device. Including,
The energy storage device
The external power may be supplied to charge or the charging power may be provided to the external power device, the battery control signal may be received and controlled, and the operation state information may be generated and provided to the external network device. ,
The monitoring process is
The state of the energy storage device is monitored using at least one of information generated by directly measuring the state of the energy storage device and the operation state information, and if it is determined that it is in an abnormal state as a result of monitoring, the switch is controlled to warn Generates a message or cuts off a connection between the external power device and the energy storage device.

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