Safety device, live system, energy storage system and control system

Abstract

This application provides a safety protection device, a live system, an energy storage system, and a control system. The safety protection device includes: a detection element for detecting an electrical signal in a test area and transmitting the electrical signal to a control device, so that the control device can determine the current state of the test area based on the electrical signal; an alarm device for acquiring a prompting command from the control device and prompting the current state of the test area based on the prompting command; and a door lock device for acquiring a switching command from the control device and locking or unlocking the entrance / exit of the test area based on the switching command, wherein the switching command is determined based on the current state.

Description

Technical Field

[0001] This application relates to the field of safety technology, and more specifically, to a safety protection device, a live system, an energy storage system, and a control system. Background Technology

[0002] Currently, some energized locations, such as direct-connected DC energy storage systems, are a new type of energy storage device using container structures as carriers, capable of solving various transient and steady-state problems of DC systems. However, the operation and maintenance safety of these energized locations also needs further consideration. The special characteristic of these locations is that each sub-module within them is a high-voltage active system, and the supports carrying the sub-modules may also be energized during system operation. If personnel accidentally enter such operating locations, there is a risk of electric shock. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a safety protection device, a live system, an energy storage system, and a control system to improve the safety of entering and exiting live locations.

[0004] In a first aspect, embodiments of this application provide a security protection device, comprising: a detection element for detecting an electrical signal in a test area and transmitting the electrical signal to a control device, so that the control device can determine the current state of the test area based on the electrical signal; an alarm device for acquiring a prompting instruction from the control device to prompt the current state of the test area based on the prompting instruction; and a door lock device for acquiring a switching instruction from the control device to lock or unlock the entrance / exit of the test area based on the switching instruction, wherein the switching instruction is determined based on the current state.

[0005] In an optional embodiment, the detection element includes a current sensor, which is installed at the device connection line in the area to be tested to detect the current data of the device connection line in the area to be tested.

[0006] Through the above implementation method, the presence or absence of electricity in the location can be intuitively determined by the current sensor, thereby indicating whether the area under test is safe or not.

[0007] In an optional embodiment, the detection element includes a first current sensor and a second current sensor; the first current sensor is installed at a first location on the device connection line of the area to be tested, and the first current sensor is used to detect a first current data at the first location on the device connection line of the area to be tested; the second current sensor is installed at a second location on the device connection line of the area to be tested, and the second current sensor is used to detect a second current data at the second location on the device connection line of the area to be tested, wherein the first location and the second location are located on opposite sides of the area to be tested.

[0008] In the above embodiment, by using two current sensors, it is possible to detect that when a ground short-circuit fault occurs in the area under test, the casing of the area under test may also be at risk of becoming electrified. This allows for a more comprehensive assessment of the safety of the area under test.

[0009] In an optional embodiment, the alarm device includes a light alarm device, which is used to output lights with different attributes according to the current state of the area under test.

[0010] In the above implementation, by outputting lights with different attributes to indicate the current state of the area under test, relevant personnel are indirectly prevented from accidentally entering the area under test in an unsafe state, thereby improving the safety of entering and exiting the area under test.

[0011] In an optional implementation, the current state of the area to be tested is either an accessible state or an inaccessible state; the alarm device further includes: an audible and visual alarm device, which is used to output an audible and visual alarm signal when the area to be tested is in an inaccessible state and the door lock device is triggered; or, the audible and visual alarm device is used to output an audible and visual alarm signal when the area to be tested is in an inaccessible state and a person is detected within the restricted area of ​​the area to be tested.

[0012] In the above embodiments, the sound and light alarm device can output sound and light signals, which can more clearly indicate the danger in the area under test, thereby improving the safety of entering and exiting the area under test.

[0013] Secondly, embodiments of this application provide a live system, including: a housing structure, functional equipment installed within the housing structure, and the aforementioned safety protection device;

[0014] The detection element of the safety protection device is used to detect the electrical signal of the housing structure.

[0015] The alarm device of the safety protection device is used to indicate the current state of the housing structure, wherein the current state is determined based on the electrical signal;

[0016] The door lock device of the safety protection device is used to lock or open the entrance and exit of the housing structure, wherein the switch command is determined according to the current state.

[0017] Thirdly, this application provides an energy storage system, including: a housing, an energy storage submodule installed inside the housing, and the aforementioned safety protection device;

[0018] The detection element of the safety protection device is used to detect the electrical signal of the enclosure;

[0019] The alarm device of the safety protection device is used to indicate the current status of the enclosure, wherein the current status is determined based on the electrical signal;

[0020] The door lock device of the security protection device is used to lock or open the entrance and exit of the box, wherein the switch command is determined according to the current state.

[0021] In an optional implementation, the energy storage submodule includes: a power module and a battery module;

[0022] The energy storage system also includes: a submodule controller and a battery management unit;

[0023] The submodule controller is used to control the power module to turn on and off;

[0024] The battery management unit is used to manage the battery module.

[0025] Fourthly, embodiments of this application provide a control system, including: a control device and the aforementioned safety protection device;

[0026] The detection element of the safety protection device is used to detect the electrical signal in the area to be tested and transmit the electrical signal to the control device;

[0027] The control device is used to determine the current state of the area to be tested based on the electrical signal, and to generate prompt instructions and switch instructions based on the current state;

[0028] The alarm device of the safety protection device is used to acquire the prompting instruction of the control device, and to prompt the current status of the area to be tested according to the prompting instruction;

[0029] The door lock device of the security protection device is used to acquire the switch command of the control device, so as to lock or open the entrance and exit of the area to be tested according to the switch command, wherein the switch command is determined according to the current state.

[0030] Fifthly, embodiments of this application provide a control method, comprising: acquiring an electrical signal of a region to be tested; determining the current state of the region to be tested based on the electrical signal; and sending a control command to an alarm device and a door lock device based on the current state, wherein the control command is used to control the alarm device and the door lock device to maintain a state associated with the current state of the region to be tested.

[0031] In an optional implementation, the electrical signal includes current data at the entrance and exit of the area to be tested; determining the current state of the area to be tested based on the electrical signal includes: if the current data is not less than a set threshold, then determining the current state of the area to be tested as an inaccessible state.

[0032] In the above implementation, by setting a threshold as the judgment benchmark for current data, the current state of the area to be measured can be determined, making the judgment of the current state of the area to be measured clearer and simpler, and also reducing the amount of calculation required for judgment.

[0033] In an optional implementation, the area to be tested is an energy storage system, which includes an energy storage submodule;

[0034] The electrical signal also includes the number of relays connected in the energy storage submodule in the area under test;

[0035] The step of determining the current state of the area under test based on the electrical signal includes: if the number of relay connections in the energy storage submodule is not less than one, then the current state of the area under test is determined to be an inaccessible state; if the current data is less than a set threshold and the number of relay connections in the energy storage submodule is less than one, then the current state of the area under test is determined to be an accessible state.

[0036] In the above implementation, in addition to judging the current data of the area under test, the connection status of the relays in each subsystem can also be judged, thereby more accurately determining the current state of the area under test.

[0037] In an optional implementation, the method further includes:

[0038] If the number of relay connections in the energy storage submodule is greater than or equal to one, and less than N, a power-down command is sent to the area under test. The power-down command is used to disconnect the relay connections in each of the energy storage submodules in the area under test. Here, N represents the total number of energy storage submodules in the area under test.

[0039] After issuing the power-down command, the step of determining the current state of the area to be tested based on the electrical signal is then executed.

[0040] In the above implementation, if it is determined that the relays of some energy storage submodules in the area under test are in a connected state and the relays of some energy storage submodules are in a disconnected state, then the connection status of the area under test is likely abnormal. Therefore, in this case, before proceeding with subsequent processing, a prompt can be output so that the status of the area under test can be more clearly indicated by the alarm device.

[0041] In an optional implementation, before determining the current state of the area under test based on the electrical signal, the method further includes: acquiring the state of the door lock device of the area under test; if the state of the door lock device is open, sending a danger warning instruction to the alarm device of the area under test, the danger warning instruction being used to prompt the alarm device to output a danger warning.

[0042] In the above implementation, if the door lock device of the area to be tested is in the open state before the current state of the area to be tested is determined, this will lead to the risk of accidental entry into the area to be tested. Therefore, in this case, a danger warning can be output to reduce the risk of relevant personnel accidentally entering the area to be tested.

[0043] In an optional implementation, the electrical signal includes current data at the entrance and exit of the area under test, the number of relay connections within the energy storage submodules in the area under test, and voltage data between the various energy storage submodules.

[0044] Determining the current state of the area to be measured based on the electrical signal includes:

[0045] If the current data is not less than the set threshold, then the current state of the area to be tested is determined to be an inaccessible state.

[0046] If the number of relays connected in the energy storage submodule is not less than one, then the current state of the area under test is determined to be an inaccessible state.

[0047] If the voltage data between any two energy storage submodules is a non-zero value, then the current state of the area to be tested is determined to be an inaccessible state.

[0048] If the current data is less than a set threshold, the number of relay connections in the energy storage submodule is less than one, and the voltage data between any two energy storage submodules is zero, then the current state of the area to be tested is determined to be an accessible state.

[0049] In the above embodiments, the voltage data between energy storage submodules can be further detected, which further improves the comprehensiveness of the detection results.

[0050] Sixthly, embodiments of this application provide a control device, including: a processor and a memory, wherein the memory stores machine-readable instructions executable by the processor, and when the control device is running, the machine-readable instructions are executed by the processor to perform the steps of the above-described method.

[0051] The safety protection device, energized system, energy storage system, and control system provided in this application embodiment identify the current state of the area under test to determine whether the area under test is accessible, and control the state of the alarm device and door lock device of the area under test to improve the access security of the area under test.

[0052] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A schematic diagram illustrating the interaction between the area to be tested and the control device provided in an embodiment of this application;

[0055] Figure 2 A schematic diagram of the structure of the area to be tested, in which a safety protection device is installed, provided in an embodiment of this application;

[0056] Figure 3 A circuit diagram of an energy storage system provided in an embodiment of this application;

[0057] Figure 4 A circuit diagram of an energy storage submodule of an energy storage system provided in an embodiment of this application;

[0058] Figure 5 A block diagram of the control device provided in the embodiments of this application;

[0059] Figure 6 A flowchart of the control method provided in the embodiments of this application.

[0060] Icons: 100 - Area to be tested; 110 - Safety protection device; 111 - Detection element; 112 - Alarm device; 113 - Door lock device; 114 - Equipment connection line; 121 - First entrance / exit; 122 - Second entrance / exit; 130 - Sending-end circulating station; 140 - Receiving-end circulating station; 150 - Energy storage submodule; 151 - Battery; IGBT1 - First insulated gate bipolar transistor; IGBT2 - Second insulated gate bipolar transistor; C - Filter capacitor; 200 - Control device; 211 - Memory; 213 - Processor. Detailed Implementation

[0061] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0062] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] High-voltage energized locations can be well applied in various scenarios. For example, DC direct-connected energy storage systems are energy storage devices with container structures that can solve various transient and steady-state problems of DC systems.

[0064] However, this also introduces some problems. The special nature of these locations lies in the fact that their internal sub-modules are all high-voltage active systems. During operation, the supports carrying these internal sub-modules may be live conductors, posing a risk of electric shock if personnel accidentally enter the operating container. Furthermore, the container's outer shell may become electrified in the event of a ground fault. Therefore, the operational safety of such high-voltage locations requires further consideration. Typically, when a high-voltage location is shut down, maintenance personnel must enter the container for inspection, making it impossible to immediately determine whether the container's outer shell is electrified or whether there is a risk of a short circuit or ground fault inside.

[0065] Based on the above situation, this application provides a safety protection device 110, a live system, an energy storage system, a control system, and a control method, which can detect the current state of a high-voltage energized location to determine the safety of the high-voltage energized location, and allow relevant personnel to enter or exit the high-voltage energized location only after the safety is determined.

[0066] The safety protection device 110 and control method provided in this embodiment can be used in any high-voltage energized location, such as energy storage systems, data centers, etc.

[0067] To facilitate understanding of this embodiment, the operating environment for implementing the control method disclosed in this application embodiment will first be introduced.

[0068] like Figure 1 The diagram illustrates the interaction between the test area 100 and the control device 200 according to an embodiment of this application. The control device 200 communicates with one or more test areas 100 via a network to perform data communication or interaction. The control device 200 can be a network server, a database server, a personal computer (PC), a tablet computer, a smartphone, a personal digital assistant (PDA), a host computer, etc.

[0069] The area to be tested 100 can be any location where high-voltage electrical equipment operates internally, and the area housing the high-voltage electrical equipment can be made of a conductive material. For example, it can be a metal casing, a container, etc.

[0070] In this embodiment, a safety protection device 110 is installed in the area to be tested 100, such as... Figure 2 As shown, the security device 110 includes a detection element 111, an alarm device 112, and a door lock device 113.

[0071] The detection element 111 can be used to detect the electrical signal of the area 100 under test. The electrical signal can be transmitted to the control device 200 so that the control device 200 can determine the current state of the area 100 under test based on the electrical signal.

[0072] The alarm device 112 can obtain a prompting command from the control device 200 to indicate the current status of the area under test 100 according to the prompting command.

[0073] For example, the current state of the area under test 100 can be either an accessible state or an inaccessible state. The current state of the area under test 100 can also be either a safe state or a risky state.

[0074] The door lock device 113 can receive a switch command from the control device 200 to lock or unlock the entrance / exit of the area under test 100 according to the switch command. The switch command can be determined based on the current state of the area under test 100.

[0075] For example, when the current state of the area under test 100 is an accessible state or a safe state, indicating that the environment of the area under test 100 is suitable for relevant personnel to enter and exit, it can be determined that the switch command is used to indicate that the door lock device 113 is in an open state or in an openable state.

[0076] For example, if the current state of the area under test 100 is an inaccessible state or a risk state, indicating that the environment of the area under test 100 is not suitable for relevant personnel to enter or exit, then it can be determined that the switch command is used to indicate that the door lock device 113 is in a closed state or in a state that cannot be opened.

[0077] In this embodiment, the door lock device 113 can be a controllable door lock, capable of controlling the opening or closing of the door lock device 113 installed in the test area 100 according to the instructions of the control device 200. For example, the door lock device 113 may have a limit function, meaning that when the control device 200 opens the door lock device 113, the door of the test area 100 remains closed and will not open automatically. It requires manual opening before the door lock device 113 can be fully opened and the door of the test area 100 can be opened.

[0078] The aforementioned control device 200 may be an electronic device installed inside or around the area to be tested 100. This electronic device has a processing function, which can calculate based on the obtained electrical signal to obtain a prompt instruction or a switch instruction, and transmit the prompt instruction to the alarm device 112 and the switch instruction to the door lock device 113.

[0079] The aforementioned control device 200 can also be a back-end server that establishes a connection with each test area 100. This back-end server can receive electrical signals transmitted by each test area 100 to determine the current state of each test area 100.

[0080] In the above embodiments, the current state of the area under test 100 can be identified to determine whether the area under test 100 is accessible, and the state of the alarm device 112 and door lock device 113 of the area under test 100 can be controlled to improve the access security of the area under test 100.

[0081] Optionally, the safety protection device 110 may also include a communication unit, which can be used to communicate with the control device 200 to transmit electrical signals of the area under test 100 and to receive switching commands transmitted by the control device 200.

[0082] In one embodiment, the current state of the test area 100 can be determined by detecting whether there is current in the connection lines between the various devices in the test area 100. The detection element 111 mentioned above includes a current sensor.

[0083] The current sensor can be installed at the device connection line 114 of the area under test 100 to detect the current data of the device connection line 114 of the area under test 100.

[0084] Optionally, the device connection line 114 can be a cable for connecting various devices in the area under test 100. For example, the cable can be a DC cable.

[0085] By detecting the current in the device connection line 114 of the test area 100, it can be determined whether the device connected to the device connection line 114 in the test area 100 is in an operational state. If it is in an operational state, it may cause the device in the test area 100 to be energized, and the housing area containing each device may also be energized. Therefore, the current state of the test area 100 can be determined by detecting whether there is current in the device connection line 114.

[0086] When a ground short circuit fault occurs in the area under test 100, the surface of the area under test 100 may also be at risk of becoming electrified. When a ground short circuit fault occurs in the area under test 100, the current data at some locations of the equipment connection line 114 may be zero, and the current data at some locations may be non-zero. Based on this characteristic, current sensors can be installed at multiple locations on the equipment connection line 114.

[0087] In one embodiment, the detection element 111 includes a first current sensor and a second current sensor.

[0088] Optionally, a first current sensor is installed at a first position on the device connection line 114 of the area under test 100, and the first current sensor is used to detect first current data at the first position on the device connection line 114 of the area under test 100.

[0089] Optionally, a second current sensor is installed at a second location on the device connection line 114 of the area under test 100, and the second current sensor is used to detect second current data at the second location on the device connection line 114 of the area under test 100.

[0090] The first position and the second position are located on opposite sides of the area to be tested 100.

[0091] For example, such as Figure 2 As shown, the first position can be located at the first entrance / exit 121 of the area to be tested 100, and the second position can be located at the second entrance / exit 122 of the area to be tested 100.

[0092] Optionally, if the area to be tested 100 has only one entrance or exit, the first position can be located at the entrance or exit of the area to be tested 100, and the second position can be located outside the plane parallel to the plane where the exit is located.

[0093] In this embodiment, the current sensor installed at the device connection line 114 can be a Hall sensor.

[0094] Depending on actual needs, more current sensors can be arranged in the area to be tested 100 to achieve more accurate detection of the state in the area to be tested 100.

[0095] By using current sensors arranged in the area under test 100, safety and risks in the area under test 100 are detected, thereby improving safety when entering or leaving the area under test 100.

[0096] To help users understand whether the area under test is safe or not, different alarm methods can be used to alert them.

[0097] In one embodiment, the alarm device 112 includes a light alarm device, which is used to output lights with different attributes according to the current state of the area under test 100.

[0098] For example, the number of attributes of the light can be set according to the possible states of the area to be tested 100.

[0099] For example, if the state of the area to be tested 100 includes two possibilities, then the number of attributes of the light can also include two possibilities.

[0100] For example, the state of the area to be tested 100 includes an accessible state and an inaccessible state. The accessible state corresponds to the lighting of the first attribute, and the inaccessible state corresponds to the lighting of the second attribute.

[0101] In one instance, the light of the first attribute can be green, and the light of the second attribute can be red.

[0102] In another instance, the light of the first attribute could be a constant green light, and the light of the second attribute could be a flashing red light.

[0103] Of course, if the test area 100 has more states, more attribute lights can be configured according to the number of states of the test area 100 in order to achieve more accurate state prompts for the test area 100.

[0104] For example, the current state of the area to be tested 100 is either an accessible state or an inaccessible state; the alarm device 112 may also include an audible and visual alarm device.

[0105] This audible and visual alarm device can determine different output prompts based on the different states of the area under test.

[0106] For example, when the current state of the area under test 100 is an accessible state, the audible and visual alarm device can be in a closed state. For example, when the current state of the area under test 100 is an inaccessible state, the audible and visual alarm device can output one of the following prompts: light prompt, sound prompt, or a combination of sound and light prompt.

[0107] In one embodiment, the audible and visual alarm device is used to output an audible and visual alarm signal when the area under test 100 is in an inaccessible state and the door lock device 113 is triggered.

[0108] In one embodiment, the audible and visual alarm device is used to output an audible and visual alarm signal when the area under test 100 is in an inaccessible state and a person is detected within the defined area of ​​the area under test 100.

[0109] Optionally, a data acquisition device can be installed around the area to be tested 100. The data acquisition device can be used to acquire image data around the area to be tested 100, and the control device 200 can determine whether there are people around the area to be tested 100 based on the image data.

[0110] The aforementioned safety protection device 110 can be used in different test areas 100, for example, the test area 100 can be a place where multiple high-voltage live equipment are operating.

[0111] Therefore, this application embodiment also provides a live system, which may include: a housing structure, functional equipment installed in the housing structure, and the aforementioned safety protection device 110.

[0112] The detection element 111 of the safety protection device 110 is used to detect the electrical signal of the housing structure; the alarm device 112 of the safety protection device 110 is used to indicate the current status of the housing structure, wherein the current status is determined based on the electrical signal; and the door lock device 113 of the safety protection device 110 is used to lock or open the entrance and exit of the housing structure, wherein the switch command is determined based on the current status.

[0113] The housing structure can be a container structure.

[0114] The functional equipment installed within the housing structure can be equipment that provides services to the energized system. For example, the functional equipment can be a computer running a service program that, when running, provides the functions required for the energized service.

[0115] Other details regarding the safety protection device 110 in this embodiment can be found in the description of the above-described safety protection device 110 embodiment, and will not be repeated here.

[0116] This application embodiment can also provide an energy storage system, which may include: a housing, an energy storage submodule 150 installed in the housing, and the aforementioned safety protection device 110.

[0117] The detection element 111 of the safety protection device 110 is used to detect the electrical signal of the enclosure; the alarm device 112 of the safety protection device 110 is used to indicate the current status of the enclosure, wherein the current status is determined based on the electrical signal; and the door lock device 113 of the safety protection device 110 is used to lock or open the entrance and exit of the enclosure, wherein the switch command is determined based on the current status.

[0118] For example, the enclosure can be a shipping container. The enclosure can also be any enclosure capable of carrying each energy storage submodule 150, and the enclosure contains a metal support frame.

[0119] In this embodiment, the energy storage submodule 150 includes a power module and a battery 151 module. The energy storage system also includes a submodule controller and a battery 151 management unit. The submodule controller is used to control the power module's on and off states, and the battery 151 management unit is used to manage the battery 151 module.

[0120] For example, the energy storage system could be a novel high-voltage direct-connected energy storage system. For instance... Figure 3 As shown, the energy storage system may include multiple energy storage sub-modules 150 connected in series on the DC side of the sending-end circulating station 130 and the receiving-end circulating station 140 to form a novel direct-connected energy storage system. Exemplarily, the energy storage system may also include a reactor. This reactor is connected in series with each of the energy storage sub-modules 150 to form the novel direct-connected energy storage system.

[0121] In this embodiment, as Figure 4 As shown, the energy storage submodule 150 can be composed of a half-bridge circuit formed by two IGBTs (Insulated Gate Bipolar Transistors) connected in series, a filter capacitor C, a filter reactance, and a battery 151. The two IGBTs connected in series, specifically the half-bridge circuit formed by the first IGBT1 and the second IGBT2, can serve as the power module.

[0122] In this embodiment, the IGBTs in the power module can be turned on and off by the aforementioned Sub-Module Control (SMC).

[0123] In this embodiment, the signals of battery 151 can be acquired by battery management system. Battery management system can acquire signals such as current and voltage of battery 151, and can also control the opening and closing of the high-voltage DC relay in battery 151 module.

[0124] The aforementioned battery 151 management unit can communicate with the submodule controller via optical fiber and is managed by the submodule controller. It can receive instructions from the submodule controller and send information of the battery 151 to the submodule controller.

[0125] Other details regarding the safety protection device 110 in this embodiment can be found in the description of the above-described safety protection device 110 embodiment, and will not be repeated here.

[0126] By installing a safety protection device 110 in the energy storage system, the safety status of the energy storage system can be determined, thereby reducing the risk of the energy storage system and improving the safety of entering and exiting the energy storage system.

[0127] This application embodiment also provides a control device 200, such as... Figure 5 The diagram shown is a block diagram of a control device 200. The control device 200 may include a memory 211 and a processor 213. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the control device 200. For example, the control device 200 may also include components that are more... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0128] The memory 211 and processor 213 described above are electrically connected to each other directly or indirectly to enable data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The processor 213 described above is used to execute executable modules stored in the memory.

[0129] The memory 211 can be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory 211 stores programs, which are executed by the processor 213 upon receiving execution instructions. The methods executed by the control device 200 according to the process definition disclosed in any embodiment of this application can be applied to the processor 213, or implemented by the processor 213.

[0130] The aforementioned processor 213 may be an integrated circuit chip with signal processing capabilities. The processor 213 may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a digital signal processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor.

[0131] The control device 200 in this embodiment can be used to execute various steps in the various methods provided in the embodiments of this application. The implementation process of the control method is described in detail below through several embodiments.

[0132] Please see Figure 6 This is a flowchart of a control method provided in an embodiment of this application. The steps in the method of this embodiment can be... Figure 5 The control device shown performs the operation. The following will discuss... Figure 6 The specific process shown will be explained in detail.

[0133] Step 310: Obtain the electrical signal of the area to be tested.

[0134] For example, the electrical signal can be obtained by a sensor installed in the area to be tested.

[0135] For example, the electrical signal can also be determined based on the operating status of the functional device in the area under test. For instance, the electrical signal can be determined by whether the functional device in the area under test is powered on.

[0136] Step 320: Determine the current state of the area to be tested based on the electrical signal.

[0137] The electrical signal can be a signal used to characterize whether the area under test is charged. For example, the electrical signal can be current data.

[0138] For example, the electrical signal can be used to determine whether the area under test is energized. If the area under test is energized, it means that the area is not suitable for personnel to enter; if the area under test is not energized, it means that the area is permissible for personnel to enter.

[0139] Step 330: Send control commands to the alarm device and door lock device based on the current status.

[0140] The control command is used to control the alarm device and the door lock device to maintain their status in relation to the current state of the area under test.

[0141] For example, different current states can correspond to different control commands. Different control commands can be used to instruct the alarm device and the door lock device to present different states.

[0142] Optionally, the control command may include a switch command for controlling the opening or closing of the door lock device. For example, if the current state of the area under test is an accessible state, the switch command may instruct the door lock device to open, or instruct the door lock device to be in an openable state. For example, if the current state of the area under test is an inaccessible state, the switch command may instruct the door lock device to close, or instruct the door lock device to be in a locked state.

[0143] Optionally, the control command may include a prompting command for controlling the alarm device to output a status indication of the area under test. For example, if the current status of the area under test is an accessible state, the prompting command may indicate that the alarm device has no output, or instruct the alarm device to output an alarm corresponding to that state. For example, if the current status of the area under test is an inaccessible state, the prompting command may instruct the alarm device to output a risk warning.

[0144] In one embodiment, the electrical signal includes current data at the entrance and exit of the area to be tested. Based on this, step 320 may include: if the current data is not less than a set threshold, then determining that the current state of the area to be tested is an inaccessible state.

[0145] The threshold value can be a small value, for example, it can be 0.1A, 0.2A, etc.

[0146] For example, if current sensors are installed at multiple locations in the area to be tested, multiple current data of the area to be tested can be obtained. If any current data is not less than a set threshold, the current state of the area to be tested is determined to be an inaccessible state.

[0147] In one embodiment, the area under test is an energy storage system, which includes an energy storage submodule. The electrical signal also includes the number of relay connections within the energy storage submodule in the area under test. Step 320 may include: if the number of relay connections within the energy storage submodule is not less than one, then the current state of the area under test is determined to be an inaccessible state; if the current data is less than a set threshold and the number of relay connections within the energy storage submodule is less than one, then the current state of the area under test is determined to be an accessible state.

[0148] For example, if the energy storage system includes N energy storage sub-modules, then if the relays in each of the N energy storage sub-modules are all in the off state, and all the current data collected are less than the set threshold, then the current state of the area to be tested can be determined to be an accessible state.

[0149] For example, if the energy storage system includes N energy storage sub-modules, then if one of the relays in each of the N energy storage sub-modules is in a connected state, or if the current data of any one of them is not less than a set threshold, then the current state of the area to be tested can be determined to be an inaccessible state.

[0150] In this embodiment, if the relays of some of the N energy storage submodules are in a connected state, and the relays of another part of the N energy storage submodules are in a disconnected state, there may be two situations: one is that the relays or storage submodules of some storage submodules are faulty, and the other is that the circuit breaker connected to the battery management unit and the submodule controller in some storage submodules has failed to disconnect successfully.

[0151] Based on this, the control method in this embodiment may further include: if the number of relay connections in the energy storage submodule is greater than or equal to one, and less than N, sending a power-off command to the area under test.

[0152] The power-down command is used to disconnect the relays in each of the energy storage submodules in the area under test, where N represents the total number of energy storage submodules in the area under test.

[0153] After issuing the power-down command, step 320 is executed to determine the current state of the area under test.

[0154] If the number of relays connected in the energy storage submodule is equal to N, then it can be determined that all relays in each energy storage submodule in the area under test are connected. Therefore, the area under test is not suitable for entry at present, and the current state of the area under test is determined to be an inaccessible state.

[0155] Optionally, if the number of relay connections within the energy storage submodule is greater than or equal to one, and less than N, a notification message can be sent to relevant personnel. This notification message is used to inform relevant personnel of the connection or disconnection status of the relays within the energy storage submodule, allowing them to understand the status of the energy storage system.

[0156] To reduce the risk of the area under test, the status of the door lock device in the area under test can be determined before determining the current status of the area under test through electrical signals. Therefore, before step 320, the control method further includes: obtaining the status of the door lock device in the area under test; if the door lock device is in the open state, sending a danger warning command to the alarm device in the area under test, the danger warning command being used to prompt the alarm device to output a danger warning.

[0157] For example, the audible and visual alarm device in the alarm device can output audible and visual signals to alert the relevant user that there may be potential risks in the area to be tested.

[0158] In this embodiment, the electrical signal of the area under test may include current data at the entrance and exit of the area under test, the number of relay connections within the energy storage submodules in the area under test, and voltage data between the various energy storage submodules. Based on this, step 320 above may include:

[0159] If the current data is not less than the set threshold, then the current state of the area to be tested is determined to be an inaccessible state.

[0160] If the number of relays connected in the energy storage submodule is not less than one, then the current state of the area under test is determined to be an inaccessible state.

[0161] If the voltage data between any two of the energy storage submodules is non-zero, then the current state of the area under test is determined to be an inaccessible state.

[0162] If the current data is less than the set threshold, the number of relays connected in the energy storage submodule is less than one, and the voltage data between any two energy storage submodules is zero, then the current state of the area under test is determined to be an accessible state.

[0163] Optionally, if any current data is not less than a set threshold, the current state of the area to be tested can be determined as an inaccessible state.

[0164] Optionally, if the number of relays connected in the energy storage submodule is greater than or equal to one, the current state of the area under test can also be determined as an inaccessible state.

[0165] Optionally, if the voltage data between any two of the energy storage submodules is not zero, it can also be determined that the current state of the area under test is an inaccessible state.

[0166] The following example, using an energy storage system loaded in container form as the test area, illustrates the entire process of this control method:

[0167] Before determining the current state of the area under test, a power-down command can be sent to the area under test. If the area under test is a large system consisting of multiple containers and energy storage systems, the power-down command can be used to control the disconnection between the storage systems formed by the containers, and then disconnect the relays between the battery management unit and the submodule controller of the energy storage subsystem inside a single container.

[0168] Then, it is determined whether the door locks of each container are closed. If they are closed, the subsequent process of judging the electrical signals of the containers can proceed. If they are not closed, a risk warning instruction is sent to the alarm device. After the risk warning is output, the subsequent judgment of the container status is carried out.

[0169] Acquire the current data of the Hall sensor installed in the container and determine whether the current data is less than a set threshold.

[0170] Obtain the status signals of the relays between the battery management unit and the submodule controller inside the container, and determine whether the number of currently connected relays is zero.

[0171] If all current data are less than the set threshold, and the number of relays connected between the battery management unit and the submodule controller is zero, then the container door lock device can be opened.

[0172] If any current data is not less than the set threshold, or if the number of relays connected between the battery management unit and the submodule controller is not zero, then no personnel are allowed to enter the container.

[0173] If the number of relays connected between the battery management unit and the submodule controller is not zero and is less than the number of relays between each battery management unit and each submodule controller in the container, then it is necessary to determine whether a relay fault exists. Alternatively, a power-down command can be resent to the container to disconnect the relays between each battery management unit and each submodule controller. If a relay fault is determined to exist, a prompt command can also be transmitted to an alarm device to indicate the relay fault.

[0174] The method in this application embodiment can determine the safety of the area to be tested before entering or leaving it. After confirming safety, the door to the area to be tested can be opened. If it is determined that there is a risk in the area to be tested, relevant personnel can be prohibited from entering, thereby improving the security of entering and leaving the area.

[0175] Furthermore, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the control method described in the above method embodiments.

[0176] The computer program product of the control method provided in this application includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the steps of the control method described in the above method embodiments. For details, please refer to the above method embodiments, which will not be repeated here.

[0177] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0178] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0179] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks. It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0180] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0181] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method characterized by, The method comprises the following steps: acquiring an electrical signal of a to-be-tested area, the to-be-tested area being an energy storage system, the energy storage system comprising energy storage sub-modules, the electrical signal further comprising a connection number of a relay in the energy storage sub-modules in the to-be-tested area; the electrical signal comprising current data at an entrance and exit of the to-be-tested area; if the connection number of the relay in the energy storage sub-modules is greater than or equal to one and less than N, sending a power-off instruction to the to-be-tested area, the power-off instruction being used for the to-be-tested area to disconnect the connection of the relay in each energy storage sub-module, wherein the N represents a total number of the energy storage sub-modules in the to-be-tested area; after the power-off instruction is sent, performing the step of determining a current state of the to-be-tested area according to the electrical signal again; determining the current state of the to-be-tested area according to the electrical signal, comprising: if the connection number of the relay in the energy storage sub-modules is not less than one, determining that the current state of the to-be-tested area is an un-enterable state; if the current data is less than a set threshold value and the connection number of the relay in the energy storage sub-modules is less than one, determining that the current state of the to-be-tested area is an enterable state; sending a control instruction to an alarm device and a door lock device according to the current state, the control instruction being used for controlling the alarm device and the door lock device to keep a state associated with the current state of the to-be-tested area.

2. The method of claim 1, wherein, The step of determining the current state of the to-be-tested area according to the electrical signal comprises: if the current data is not less than a set threshold value, determining that the current state of the to-be-tested area is an un-enterable state.

3. The method of claim 1, wherein, Before the step of determining the current state of the to-be-tested area according to the electrical signal, the method further comprises: acquiring a state of a door lock device of the to-be-tested area; if the state of the door lock device is an open state, sending a danger prompt instruction to an alarm device of the to-be-tested area, the danger prompt instruction being used for the alarm device to output a danger prompt.

4. The method of claim 1, wherein, The electrical signal comprises the current data at the entrance and exit of the to-be-tested area, the connection number of the relay in the energy storage sub-modules in the to-be-tested area, and voltage data between each energy storage sub-module; The step of determining the current state of the to-be-tested area according to the electrical signal comprises: if the current data is not less than a set threshold value, determining that the current state of the to-be-tested area is an un-enterable state; if the connection number of the relay in the energy storage sub-modules is not less than one, determining that the current state of the to-be-tested area is an un-enterable state; if the voltage data between any two energy storage sub-modules is a non-zero value, determining that the current state of the to-be-tested area is an un-enterable state; if the current data is less than a set threshold value, the connection number of the relay in the energy storage sub-modules is less than one, and the voltage data between any two energy storage sub-modules is zero, determining that the current state of the to-be-tested area is an enterable state.

5. A control device, characterized by The method comprises the following steps: a processor, a memory, the memory storing machine readable instructions executable by the processor, the machine readable instructions, when executed by the processor, performing the steps of the method of any one of claims 1 to 4.

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