Energy storage control system

Abstract

The application discloses an energy storage control system, which comprises a switching module, an energy storage control module and an emergency stop control circuit. The switching module is used for controlling power supply of the energy storage control system. The energy storage control module is in communication connection with the switching module. The energy storage control module is used for controlling the switching module to be disconnected to stop the power supply of the energy storage control system when a first emergency stop signal is detected. The emergency stop control circuit comprises a first detection point. The emergency stop control circuit is in electrical connection with the switching module. When the first emergency stop signal is detected at the first detection point, the emergency stop control circuit triggers the switching module to be disconnected to stop the power supply of the energy storage control system. The embodiment of the application can improve the reliability and safety of the energy storage system in emergency stop control.

Description

Technical Field

[0001] This invention relates to the field of energy storage system technology, and in particular to an energy storage control system. Background Technology

[0002] Battery clusters in energy storage systems are typically composed of multiple battery cells connected in series and parallel. Therefore, the safety and reliability of energy storage systems are paramount. During operation, energy storage systems are susceptible to failure due to various external factors. To prevent serious consequences after a failure, highly safe and controllable operations, such as emergency stop control, are necessary. Thus, improving the reliability and safety of emergency stop control in energy storage systems is an urgent problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an energy storage control system that can improve the reliability and safety of energy storage systems in emergency stop control.

[0004] In a first aspect, embodiments of the present invention provide an energy storage control system, including a switching module, an energy storage control module, and an emergency stop control circuit, wherein... A switching module is used to control the power supply of the energy storage control system. An energy storage control module is communicatively connected to the switch module. The energy storage control module is used to control the switch module to disconnect in the event of a first emergency stop signal, so as to stop the power supply to the energy storage control system. An emergency stop control circuit includes a first detection point. The emergency stop control circuit is electrically connected to the switch module. When the first detection point detects the first emergency stop signal, the emergency stop control circuit triggers the switch module to disconnect, thereby stopping the power supply to the energy storage control system.

[0005] According to an embodiment of the present invention, an energy storage control system has at least the following beneficial effects: The switching module, as a core component for controlling the power supply of the energy storage control system, plays a crucial role in emergency stop control. Therefore, by establishing a communication connection between the energy storage control module and the switching module, when the energy storage control module detects a first emergency stop signal, it can control the switching module to disconnect the power supply to the energy storage control system, achieving emergency stop control at the software level. The emergency stop control circuit is electrically connected to the switching module. When the first emergency stop signal is detected at the first detection point of the emergency stop control circuit, the emergency stop control circuit can trigger the switching module to disconnect the power supply to the energy storage control system, achieving emergency stop control at the hardware level. Therefore, when the first emergency stop signal is detected, both software and hardware-level emergency stop control can participate simultaneously, ensuring the safe completion of emergency stop control of the energy storage control system and effectively improving the reliability and safety of emergency stop control.

[0006] According to some embodiments of the present invention, the energy storage control system further includes an energy storage converter and an energy management system module. The emergency stop control circuit is electrically connected to the energy storage converter and the energy management system module, respectively, and the energy storage control module is communicatively connected to the energy storage converter and the energy management system module, respectively. Specifically, when the first emergency stop signal is detected at the first detection point, the emergency stop control circuit outputs a first circuit signal to both the energy storage converter and the energy management system module. When the first emergency stop signal is detected by the energy storage control module, it forwards the first emergency stop signal to both the energy storage converter and the energy management system module, respectively.

[0007] According to some embodiments of the present invention, the energy storage control system includes a switch module comprising a load switch for controlling the energy storage control system to supply power to an external source, a circuit breaker for controlling the power supply to auxiliary equipment of the energy storage control system, and a cluster contactor for controlling the power supply to the battery clusters of the energy storage control system. The emergency stop control circuit is connected to the load switch, the circuit breaker, and the cluster contactor, respectively, and the energy storage control module is connected to the load switch, the circuit breaker, and the cluster contactor, respectively.

[0008] According to some embodiments of the present invention, the energy storage control system further includes a battery compartment door sensor connected to the first detection point, such that when the first detection point detects a battery compartment door opening signal provided by the battery compartment door sensor, the emergency stop control circuit outputs a first circuit signal to the energy storage converter.

[0009] According to some embodiments of the energy storage control system provided by the present invention, when the battery compartment door sensor detects an open signal at the first detection point, the emergency stop control circuit triggers the cluster contactor to disconnect.

[0010] According to some embodiments of the present invention, the energy storage control system further includes a combiner cabinet door sensor connected to the first detection point, such that when the first detection point detects a combiner cabinet door opening signal provided by the combiner cabinet door sensor, the emergency stop control circuit outputs a first circuit signal to the energy storage converter and triggers the load switch to disconnect.

[0011] According to some embodiments of the present invention, the energy storage control system further includes a battery compartment door sensor, which is communicatively connected to the energy storage control module so that when the battery compartment door sensor detects a battery compartment opening signal, the energy storage control module controls the cluster contactor to disconnect and sends a second emergency stop signal to the energy storage converter and the energy management system module, respectively.

[0012] According to some embodiments of the present invention, the energy storage control system further includes a current sensor for measuring the output current of the battery cluster. The current sensor is communicatively connected to the energy storage control module so that when the battery compartment door sensor detects a battery compartment door opening signal and the output current of the battery cluster is greater than or equal to a first safe current, the energy storage control module controls the load switch to disconnect.

[0013] According to some embodiments of the present invention, the energy storage control system further includes a combiner cabinet door sensor, which is communicatively connected to the energy storage control module so that when the combiner cabinet door sensor detects a combiner cabinet door opening signal, the energy storage control module controls the cluster contactor to disconnect from the load switch and sends a second emergency stop signal to the energy storage converter and the energy management system module respectively.

[0014] According to some embodiments of the present invention, the energy storage control module includes an energy management unit and a battery management unit. The energy management unit is communicatively connected to the circuit breaker, and the battery management unit is communicatively connected to the load switch and the cluster contactor, respectively.

[0015] According to some embodiments of the present invention, in the case where the energy management unit detects a first emergency stop signal, the energy management unit controls the circuit breaker to open and forwards the first emergency stop signal to the battery management unit so that the battery management unit disconnects the load switch and the cluster contactor.

[0016] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the system structure of the energy storage control system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the electrical emergency stop process provided in an embodiment of the present invention; Figure 3This is a schematic diagram of the software emergency stop process provided in an embodiment of the present invention; Figure 4 This is another schematic diagram of the software emergency stop control provided in an embodiment of the present invention. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] Battery clusters in energy storage systems are typically composed of multiple battery cells connected in series and parallel. Therefore, the safety and reliability of energy storage systems are paramount. During operation, energy storage systems are susceptible to failure due to various external factors. To prevent serious consequences after a failure, highly safe and controllable operations, such as emergency stop control, are necessary. Thus, improving the reliability and safety of emergency stop control in energy storage systems is an urgent problem to be solved.

[0023] Based on this, embodiments of the present invention provide an energy storage control system that combines electrical linkage via hardware contacts with software control via signal transmission to achieve a combination of electrical emergency stop and software emergency stop, thereby improving the reliability and safety of the energy storage system in emergency stop control.

[0024] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0025] Reference Figure 1 , Figure 1This is a schematic diagram of the system structure of the energy storage control system provided in this embodiment of the invention. The energy storage control system includes a switch module 110, an energy storage control module 120, and an emergency stop control circuit 130. The switch module 110 controls the power supply of the energy storage control system and is the core unit for achieving safe control of the energy storage control system. It is also a key component for achieving emergency stop control. By controlling the switch module 110, the charging and discharging of the energy storage control system is cut off, preventing the energy storage control system from continuing to charge and discharge in the event of a fault, which could lead to serious consequences. Specifically, the energy storage control module 120 and the switch module 110 are directly or indirectly connected via wired or wireless communication. The energy storage control module 120 can detect a first emergency stop signal and, in response to the first emergency stop signal, send an emergency stop control signal to the switch module 110. The switch module 110 will then respond to the emergency stop control signal sent by the energy storage control module 120 by performing a tripping control, thereby disconnecting the power supply circuit and / or output circuit of the energy storage control system, thus completing the emergency stop control of the energy storage control system at the software level.

[0026] It is worth noting that the first emergency stop signal can refer to the trigger signal used to trigger the energy storage control system to perform emergency stop control. The first emergency stop signal can be generated by the emergency stop button of the energy storage control system, or it can be a remote emergency stop signal sent by an external control device. It can also be a signal triggered by some safety sensors related to safe power supply. For example, a composite fire alarm signal triggered by a composite fire alarm sensor, a water immersion signal triggered by a water level sensor, and a gas concentration too high signal triggered by a combustible gas detector can all be used as the first emergency stop signal.

[0027] The emergency stop control circuit 130 includes a first detection point 131, which can detect a first emergency stop signal. Specifically, the first detection point 131 can be electrically connected to the aforementioned emergency stop button, external control equipment, and safety sensor, and can receive and detect the first emergency stop signal. For example, the first detection point 131 can be connected to electrical components such as a differential amplifier and a voltage comparator, which can detect signal changes to determine whether the first emergency stop signal has been received. The emergency stop control circuit 130 establishes an electrical connection with the control switch. The emergency stop control circuit 130 can disconnect the relevant components in the drive switch module 110, causing the switch module 110 to disconnect the power supply circuit and / or output circuit of the energy storage control system, thus completing the emergency stop control of the energy storage control system at the electrical hardware level.

[0028] When the first emergency stop signal is detected, if the energy storage control module 120 detects the first emergency stop signal, the energy storage control module 120 can control the switch module 110 to disconnect via signal transmission to achieve emergency stop control. If the first detection point 131 of the emergency stop control circuit 130 detects the first emergency stop signal, the emergency stop control circuit 130 can control the switch module 110 to disconnect via electrical linkage to achieve emergency stop control. If both can detect the first emergency stop signal, they can synchronously control the switch module 110 to disconnect. Emergency stop control at both the software and hardware levels can participate simultaneously. Therefore, both the energy storage control module 120 and the emergency stop control circuit 130 can control the switch component to disconnect, stop the power supply to the energy storage control system, and complete the emergency stop control of the energy storage control system. This achieves a dual emergency stop control mechanism, ensuring the safe completion of emergency stop control of the energy storage control system, retaining the fault tolerance of single emergency stop control, and effectively improving the reliability and safety of emergency stop control.

[0029] Understandably, an energy storage control system also includes a Power Conversion System (PCS) and an Energy Management System (EMS) module. The PCS, as the core component of the energy storage control system, enables bidirectional energy conversion between DC and AC, and controls the charging and discharging power and voltage of the system. The EMS module is used for global energy scheduling and optimization within the energy storage control system, coordinating the operation of various components. Therefore, emergency stop control also requires the auxiliary control of the PCS and EMS modules, as described above. Figure 2 , Figure 2 This is a schematic diagram of the electrical emergency stop process provided in an embodiment of the present invention. The emergency stop control circuit 130 is electrically connected to the energy storage converter and the EMS module respectively. When the first detection point 131 detects the first emergency stop signal, such as a composite fire alarm signal, an emergency stop button signal, or a remote emergency stop signal, the emergency stop control circuit 130 drives the switch module 110 to disconnect. At the same time, it also transmits the first circuit signal to the energy storage converter and the EMS module. The first circuit signal can refer to the action of the energy storage converter and the EMS module to execute the emergency stop control action of the energy storage control system. For example, the energy storage converter cuts off the drive signal of the power semiconductor to cut off the power supply circuit, and the EMS module can trigger safety linkage equipment (such as fire protection system, ventilation equipment, etc.).

[0030] Reference Figure 3 , Figure 3This is a schematic diagram of the software emergency stop process provided in this embodiment of the invention. Similarly, the energy storage control module 120 can be directly or indirectly connected to the energy storage converter and the EMS module through wired or wireless communication. The energy storage control module 120 can receive the first emergency stop signal. When the energy storage control module 120 detects the first emergency stop signal, such as a remote emergency stop signal, a composite fire alarm signal, an emergency stop button signal, a water immersion signal, or a gas concentration too high signal, it forwards the first emergency stop signal to the energy storage converter and the EMS module at the same time as the control switch module 110 is disconnected, so that the energy storage converter and the EMS module can respond to the first emergency stop signal in a timely manner and perform corresponding emergency stop control actions. Therefore, it can be seen that whether the electrical hardware responds to the first emergency stop signal to perform emergency stop control of the energy storage control system, or the software module responds to the first emergency stop signal to perform emergency stop control of the energy storage control system, it can ensure that the first emergency stop signal is transmitted to the energy storage converter and EMS module in a timely manner, so that the energy storage converter and EMS module respond to the first emergency stop signal synchronously and perform corresponding emergency stop control actions. The reliability and safety of the emergency stop control of the energy storage control system are improved through dual protection.

[0031] It is understood that the switch module 110 includes a load switch 111, a circuit breaker 112, and a cluster contactor 113. The load switch 111 is installed in the combiner cabinet of the energy storage control system. The load switch 111 can be an isolating switch in the energy storage control system. The tripping circuit of the load switch 111 can be electrically linked with the emergency stop control circuit 130 to disconnect the load switch 111, thereby disconnecting the main DC connection circuit between the energy storage control system container and the outside, preventing the energy storage control system from charging and discharging externally. The cluster contactor 113 can refer to a device used to control the entry of battery clusters. The emergency stop control circuit 130 can trigger the cluster contactor 113 to trip via interlocking control, disconnecting the battery cluster of the energy storage control system from the DC bus, thus preventing the battery cluster from charging and discharging externally. Circuit breaker 112 can refer to the AC circuit breaker in the energy storage control system. The tripping circuit of circuit breaker 112 can also be electrically linked by the emergency stop control circuit 130 to trip circuit breaker 112, thereby disconnecting the auxiliary power supply circuit inside the energy storage control system container, causing power outages for auxiliary equipment without uninterruptible power supply (UPS). Therefore, the emergency stop control circuit 130 can control the switching states of load switch 111, circuit breaker 112, and cluster contactor 113 through electrical hardware. Figure 2 As shown, when the first emergency stop signal is detected at the first detection point 131 of the emergency stop control circuit 130, the load switch 111, circuit breaker 112 and cluster contactor 113 can be disconnected simultaneously.

[0032] Correspondingly, the energy storage control module 120 can also be directly or indirectly connected to the load switch 111, circuit breaker 112, and cluster contactor 113 via wired or wireless communication. The energy storage control module 120 can send corresponding control signals to the load switch 111, circuit breaker 112, and cluster contactor 113, such as... Figure 3 As shown, when the energy storage control module 120 detects the first emergency stop signal, it can simultaneously send emergency stop signals to the load switch 111, circuit breaker 112, and cluster contactor 113, causing all three to disconnect. Therefore, when emergency stop control is required, the power supply to the overall energy storage control system, the power supply to the battery cluster, and the power supply to auxiliary equipment can be cut off through a dual hardware and software mechanism. This ensures that the energy storage control system will not cause more serious safety accidents due to continuous charging and discharging in the event of a fault, effectively improving the reliability and safety of emergency stop control.

[0033] Understandably, in the event of a malfunction in the energy storage control system, maintenance is required. The battery compartment door, the door or cover of the container housing the battery clusters within the energy storage control system, protects the battery clusters from external environmental contaminants (such as dust, moisture, and foreign objects), prevents accidental contact with high-voltage components of the batteries, reducing the risk of electric shock, and provides access for battery installation, maintenance, and replacement. When maintenance personnel need to open the battery compartment door to inspect the energy storage control system, failure to safely isolate the power output of the energy storage control system could potentially lead to electric shock. Therefore, to ensure safe maintenance operations, an emergency stop control mechanism for the energy storage control system must be implemented when the battery compartment door is opened.

[0034] Understandably, the combiner cabinet door serves as a protective door for the combiner cabinet (or distribution cabinet) in an energy storage control system. The combiner cabinet typically houses electrical equipment such as busbars, circuit breakers 112, fuses, and current sensors. The combiner cabinet door also isolates high-voltage circuits, preventing direct contact with live components, and provides access for maintenance personnel to debug or repair the busbars, circuit breakers 112, etc. Accordingly, to ensure the safety of maintenance work, an emergency stop control of the energy storage control system is required when the combiner cabinet door is opened.

[0035] Therefore, the energy storage control system may also include a battery compartment door sensor and a combiner cabinet door sensor, both of which are connected to the first detection point 131 of the emergency stop control circuit 130. The battery compartment door sensor and the combiner cabinet door sensor may also be directly or indirectly connected to the energy storage control module 120 via wired or wireless communication. First, an example is given on the electrical emergency stop control side, such as... Figure 2As shown, the battery compartment door sensor can detect whether the battery compartment door is open. When the battery compartment door sensor detects that the battery compartment door is open, it can generate a battery compartment door opening signal and transmit it to the first detection point 131, thereby triggering the emergency stop control circuit 130 to output a first circuit signal to the energy storage converter. The first circuit signal can be used to trigger the energy storage converter to perform safety operations. For example, the energy storage converter can cut off all energy flow, that is, stop power conversion, disconnect the circuit breaker 112 between the battery cluster and the energy storage converter, or the energy storage converter can enter a preset safety mode (or maintenance mode), prohibit all charging and discharging commands, and record fault events. The combiner cabinet door sensor can detect whether the combiner cabinet door is open. When the combiner cabinet door sensor detects that the combiner cabinet door is open, it can generate a combiner cabinet door opening signal and transmit the combiner cabinet door opening signal to the first detection point 131. This can trigger the emergency stop control circuit 130 to output the first circuit signal to the energy storage converter and trigger the emergency stop control circuit 130 to drive the load switch 111 to disconnect, so as to cut off the overall external power supply of the energy storage control system in a timely manner and improve the safety of maintenance and construction.

[0036] It is worth noting that when the first detection point 131 detects the battery compartment opening signal, the emergency stop control circuit 130 can also simultaneously trigger the cluster contactor 113 to disconnect, disconnecting the circuit connecting the battery cluster to the DC bus, so that the battery cluster cannot charge or discharge externally, ensuring the safety of maintenance and construction.

[0037] Taking the software emergency stop control side as an example, refer to... Figure 4 , Figure 4 This is another schematic diagram of the software emergency stop control provided in this embodiment of the invention. When the battery compartment door sensor detects that the battery compartment door is opened, a battery compartment opening signal can be generated. The energy storage control module 120 can obtain the battery compartment opening signal. In response to the energy storage control module 120 obtaining the battery compartment opening signal, the energy storage control module 120 sends a corresponding control signal to the cluster contactor 113, causing the cluster contactor 113 to disconnect. At the same time, the energy storage control module 120 sends a second emergency stop signal to the energy storage converter and the EMS module respectively. The second emergency stop signal can be used to prompt the energy storage converter and the EMS module to enter the safety mode and perform the preset safety operation in the maintenance mode. When the combiner cabinet door sensor detects that the combiner cabinet door has been opened, it can generate a combiner cabinet door opening signal. The energy storage control module 120 can obtain the combiner cabinet door opening signal. In response to the energy storage control module 120 obtaining the combiner cabinet door opening signal, the energy storage control module 120 sends corresponding control signals to the cluster contactor 113 and the load switch 111 to promptly cut off the external power supply of the overall energy storage control system and the external power supply of the battery cluster, thereby improving the safety of maintenance and construction.

[0038] It is worth noting that the energy storage control system can also be equipped with a current sensor. The current sensor measures the output current of the battery cluster. The current sensor is communicatively connected to the energy storage control module 120. The energy storage control module 120 can acquire the output current of the battery cluster. If the output current of the battery cluster is greater than or equal to the first safe current, such as 30 amps, then the energy storage control module 120 needs to control the load switch 111 to disconnect from the cluster contactor 113. If the output current is less than the first safe current, the energy storage control module 120 can control the cluster contactor 113 to disconnect, while the load switch 111 does not need to be disconnected.

[0039] It is understandable that, such as Figure 3 As shown, the energy storage control module 120 includes an energy management unit 121 and a battery management unit. The energy management unit 121 can refer to the control module responsible for detecting, coordinating and optimizing energy flow in the energy storage control system, i.e., the EMU (Energy Management Unit). The energy management unit 121 can communicate with various sensors, and the energy management unit 121 can detect the first emergency stop signal. Specifically, the energy management unit 121 can establish communication connections with the emergency stop button, external control equipment, safety sensors (such as composite fire alarm sensors, water level sensors and combustible gas detectors), as well as the battery compartment door sensor and the combiner cabinet door sensor. Therefore, the energy management unit 121 can detect the first emergency stop signal, such as the emergency stop button signal, the remote emergency stop signal, the composite fire alarm signal, the water immersion signal, and the gas concentration too high signal, as well as the battery compartment door opening signal and the combiner cabinet door opening signal. It is worth noting that the energy management unit 121 establishes a communication connection with the battery management unit and the circuit breaker 112. After detecting the first emergency stop signal, the energy management unit 121 can transmit the first emergency stop signal to the battery management unit and control the circuit breaker 112 to open. When the energy management unit 121 detects the battery compartment door opening signal and the combiner cabinet door opening signal, it can transmit the battery compartment door opening signal and the combiner cabinet door opening signal to the battery management unit so that the battery management system can perform subsequent control operations.

[0040] The battery management unit can communicate with the energy storage converter, EMS module, load switch 111 and cluster contactor 113. When the battery management unit receives the first emergency stop signal transmitted by the energy management unit 121, it can forward the first emergency stop signal to the energy storage converter and EMS module so that the energy storage converter and EMS module can synchronously execute the corresponding emergency stop control actions. At the same time, the battery management unit can disconnect the load switch 111 and cluster contactor 113.

[0041] It is worth noting that the battery management unit is also communicatively connected to a current sensor. When the battery management unit receives a battery compartment opening signal from the energy management unit 121, it can acquire the battery cluster output current detected by the current sensor, determine the magnitude of the battery cluster output current, and then control the load switch 111 and the cluster contactor 113. Additionally, when the battery management unit receives a combiner cabinet opening signal from the energy management unit 121, it can control the load switch 111 and the cluster contactor 113 to disconnect.

[0042] like Figure 3 It should be noted that the battery management unit may also include a Battery Array Management System (BAMS) 122 and a Battery Cluster Management System (BCMS) 123. The BAMS can manage and coordinate the control systems of multiple battery clusters in the energy storage control system, while the BCMS 123 can refer to the core control power supply of the energy storage control system specifically used to manage a single battery cluster. The BAMS is connected to the BCMS 123, and the BCMS 123 can be connected to the cluster contactor 113, meaning the BCMS 123 can control the switching state of the cluster contactor 113, such as... Figure 3 and Figure 4 As shown, when the battery management unit needs to control the cluster contactor 113 to disconnect, the battery cluster controller 123 can control the cluster contactor 113 to disconnect.

[0043] The following specific examples illustrate the energy storage control system provided in the embodiments of the present invention.

[0044] Taking the generation of the first emergency stop signal by triggering the emergency stop button on the container of the energy storage control system as an example, when the emergency stop button is triggered, the first emergency stop signal is generated, and the following actions are executed simultaneously on the electrical control side and the software control side: 1. On the electrical control side, the first detection point 131 of the emergency stop control circuit 130 detects the first emergency stop signal. The emergency stop control circuit 130 transmits the first circuit signal to the energy storage converter and EMS module. The emergency stop control circuit 130 triggers the trip circuit of the load switch 111 and the trip circuit of the circuit breaker 112 through electrical linkage, disconnecting the load switch 111 and the circuit breaker 112. At the same time, the emergency stop control circuit 130 also triggers the cluster contactor 113 to trip through interlocking control, disconnecting the cluster contactor 113, thus completing the emergency stop control on the electrical control side. At this time, the main circuit of the energy storage control system connected to the external DC, the circuit of the battery cluster to the DC bus, and the AC480V auxiliary power supply circuit of the energy storage control system are all disconnected. The energy storage control system cannot charge or discharge externally, the battery cluster cannot charge or discharge externally, and equipment without UPS power supply will lose power and shut down.

[0045] II. On the software control side, the energy management unit 121 and the BAMS module 122 exchange information via Ethernet communication. When the energy management unit 121 detects the first emergency stop signal, it transmits the first emergency stop signal to the BAMS module 122 and simultaneously sends a control signal to the circuit breaker 112 to open the circuit and disconnect the AC480V auxiliary power supply circuit of the energy storage control system. When the BAMS module 122 receives the first emergency stop signal transmitted by the energy management unit 121, it sends a control signal to the load switch 111 to open the circuit and disconnect the main DC connection circuit of the energy storage control system. At the same time, the BAMS module 122 transmits the first emergency stop signal to the battery cluster controller 123. When the battery cluster controller 123 receives the first emergency stop signal, it sends a control signal to the cluster contactor 113 to open the circuit and disconnect the circuit connecting the battery cluster to the DC bus.

[0046] In addition, when the energy storage converter and EMS module receive the first emergency stop signal or the first circuit signal, they will execute the emergency stop control action of the energy storage control system. For example, the energy storage converter will cut off the drive signal of the power semiconductor to cut off the power supply circuit, and the EMS module can trigger safety linkage equipment (such as fire protection system, ventilation equipment, etc.).

[0047] In summary, by establishing a communication connection between the energy storage control module 120 and the switch module 110, when the energy storage control module 120 detects the first emergency stop signal, it can control the switch module 110 to disconnect the power supply to the energy storage control system, thus achieving emergency stop control at the software level. Meanwhile, the emergency stop control circuit 130 is electrically connected to the switch module 110. When the first emergency stop signal is detected at the first detection point 131 of the emergency stop control circuit 130, it can trigger the switch module 110 to disconnect the power supply to the energy storage control system, thus achieving emergency stop control at the hardware level. Therefore, when the first emergency stop signal is detected, both software and hardware-level emergency stop control can participate simultaneously, ensuring the safe completion of emergency stop control in the energy storage control system and effectively improving the reliability and safety of emergency stop control.

[0048] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An energy storage control system, characterized in that, include A switching module is used to control the power supply of the energy storage control system. An energy storage control module is communicatively connected to the switch module. The energy storage control module is used to control the switch module to disconnect in the event of a first emergency stop signal, so as to stop the power supply to the energy storage control system. An emergency stop control circuit includes a first detection point. The emergency stop control circuit is electrically connected to the switch module. When the first detection point detects the first emergency stop signal, the emergency stop control circuit triggers the switch module to disconnect, thereby stopping the power supply to the energy storage control system.

2. The energy storage control system according to claim 1, characterized in that, The energy storage control system further includes an energy storage converter and an energy management system module. The emergency stop control circuit is electrically connected to the energy storage converter and the energy management system module, respectively, and the energy storage control module is communicatively connected to the energy storage converter and the energy management system module, respectively. Specifically, when the first emergency stop signal is detected at the first detection point, the emergency stop control circuit outputs a first circuit signal to both the energy storage converter and the energy management system module. When the energy storage control module detects the first emergency stop signal, it forwards the first emergency stop signal to both the energy storage converter and the energy management system module, respectively.

3. The energy storage control system according to claim 2, characterized in that, The switching module includes a load switch for controlling the energy storage control system to supply power to the outside, a circuit breaker for controlling the power supply to the auxiliary equipment of the energy storage control system, and a cluster contactor for controlling the power supply to the battery clusters of the energy storage control system. The emergency stop control circuit is connected to the load switch, the circuit breaker, and the cluster contactor respectively. The energy storage control module is connected to the load switch, the circuit breaker, and the cluster contactor respectively.

4. The energy storage control system according to claim 3, characterized in that, The energy storage control system also includes a battery compartment door sensor, which is connected to the first detection point so that when the first detection point detects a battery compartment door opening signal provided by the battery compartment door sensor, the emergency stop control circuit outputs a first circuit signal to the energy storage converter.

5. The energy storage control system according to claim 4, characterized in that, If the battery compartment door sensor detects an open signal at the first detection point, the emergency stop control circuit triggers the cluster contactor to disconnect.

6. The energy storage control system according to claim 3, characterized in that, The energy storage control system also includes a combiner cabinet door sensor, which is connected to the first detection point. When the first detection point detects a combiner cabinet door opening signal provided by the combiner cabinet door sensor, the emergency stop control circuit outputs a first circuit signal to the energy storage converter and triggers the load switch to disconnect.

7. The energy storage control system according to claim 3, characterized in that, The energy storage control system also includes a battery compartment door sensor, which is communicatively connected to the energy storage control module. When the battery compartment door sensor detects an open signal in the battery compartment, the energy storage control module controls the cluster contactor to disconnect and sends a second emergency stop signal to the energy storage converter and the energy management system module, respectively.

8. The energy storage control system according to claim 7, characterized in that, The energy storage control system also includes a current sensor for measuring the output current of the battery cluster. The current sensor is communicatively connected to the energy storage control module so that when the battery compartment door sensor detects a battery compartment opening signal and the output current of the battery cluster is greater than or equal to a first safe current, the energy storage control module controls the load switch to disconnect.

9. The energy storage control system according to claim 3, further comprising a combiner cabinet door sensor, the combiner cabinet door sensor being communicatively connected to the energy storage control module, so that when the combiner cabinet door sensor detects a combiner cabinet door opening signal, the energy storage control module controls the cluster contactor to disconnect from the load switch, and sends a second emergency stop signal to the energy storage converter and the energy management system module respectively.

10. The energy storage control system according to claim 3, characterized in that, The energy storage control module includes an energy management unit and a battery management unit. The energy management unit is communicatively connected to the circuit breaker, and the battery management unit is communicatively connected to the load switch and the cluster contactor, respectively.

11. The energy storage control system according to claim 10, characterized in that, Upon detecting a first emergency stop signal, the energy management unit controls the circuit breaker to open and forwards the first emergency stop signal to the battery management unit, causing the battery management unit to disconnect the load switch and the cluster contactor.

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