CN221303880U - Energy storage system test equipment - Google Patents
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- CN221303880U CN221303880U CN202323538575.2U CN202323538575U CN221303880U CN 221303880 U CN221303880 U CN 221303880U CN 202323538575 U CN202323538575 U CN 202323538575U CN 221303880 U CN221303880 U CN 221303880U
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- 238000012360 testing method Methods 0.000 title claims abstract description 181
- 238000004146 energy storage Methods 0.000 title claims abstract description 136
- 238000004088 simulation Methods 0.000 claims abstract description 82
- 230000002093 peripheral effect Effects 0.000 claims abstract description 58
- 230000004044 response Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 4
- 238000005316 response function Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 238000007726 management method Methods 0.000 abstract description 41
- 230000006870 function Effects 0.000 abstract description 17
- 238000013461 design Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
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Abstract
The embodiment of the application provides a testing device for an energy storage system. The device simulates an energy storage battery in an actual energy storage system through a battery simulation system, simulates various external devices in the actual energy storage system through a peripheral simulation system, generates data possibly generated by the energy storage battery and the external devices thereof during actual operation, outputs the data as test data to a control system to be tested, comprises a battery management system, a local controller and the like, and tests whether software programs of the control system are wrong in storage, whether related functions accord with design expectations or not according to the response of the control system to the test data. According to the testing device provided by the embodiment, the control system of the energy storage system can be tested in advance without waiting for the production and installation of the actual hardware equipment of the energy storage system, so that the program problem of the control system can be found and modified as soon as possible, the workload of the whole test before the project delivery of the energy storage system is reduced, the testing efficiency is improved, and the delivery delay is avoided.
Description
Technical Field
The application relates to the technical field of testing, in particular to an energy storage system testing device.
Background
As the energy storage industry is increasingly expanding, the scale of energy storage systems is also increasing; large scale high power energy storage systems often require the use of containers for installation, so are also known as energy storage containers. The energy storage container has long period from design to delivery and use, and once software or hardware faults occur, the energy storage container not only needs long time to overhaul and check the faults, but also can cause safety accidents.
In view of this, prior to delivery, it is important to test energy storage systems, particularly high power energy storage systems; how to improve the test efficiency and avoid the delay delivery caused by system test and modification is an important problem to be solved by the energy storage system test scheme.
Disclosure of utility model
The application aims to provide an energy storage system testing device, which is used for improving the testing efficiency and avoiding the delay delivery caused by system testing and modification.
To achieve the above object, an embodiment of the present application provides an energy storage system testing device, including:
The battery simulation system is used for simulating an energy storage battery of the energy storage system to generate battery test data and transmitting the battery test data to a control system to be tested in the energy storage system so as to test the response function of the control system to the battery test data;
The peripheral simulation system is used for simulating external equipment of the energy storage battery to generate peripheral test data and transmitting the peripheral test data to the control system so as to test the interaction function of the control system and the external equipment;
Wherein the control system comprises a battery management system; the battery test data comprises a first state parameter of the energy storage battery in the charging and discharging process; the peripheral test data includes a second state parameter of the external device, which is matched with the first state parameter, when the external device assists the energy storage battery in charging and discharging.
In an alternative embodiment, the battery simulation system includes: hardware in loop HIL simulation system.
In an alternative embodiment, the battery test data includes at least one of: battery voltage, battery temperature.
In an alternative embodiment, the peripheral simulation system includes at least one of:
The energy storage converter simulation unit is used for simulating the energy storage converter of the energy storage system to generate first peripheral test data and transmitting the first peripheral test data to the battery management system through a Controller Area Network (CAN) bus;
And the liquid cooling machine simulation unit is used for simulating a liquid cooling machine of the energy storage system to generate second external test data and transmitting the second external test data to the battery management system through an RS485 serial port.
In an alternative embodiment, the control system further comprises: a local controller.
In an alternative embodiment, the peripheral simulation system includes at least one of:
The air conditioner simulation unit is used for simulating an air conditioner of the energy storage system to generate third peripheral test data and transmitting the third peripheral test data to the local controller through an RS485 serial port;
The fire control simulation unit is used for simulating fire control equipment of the energy storage system to generate fourth external test data, and transmitting the fourth external test data to the local controller through an RS485 serial port.
In an alternative embodiment, the energy storage system testing device further includes: a temperature and humidity sensor;
The temperature and humidity sensor is used for acquiring environmental temperature and humidity data and transmitting the environmental temperature and humidity data to the local controller through the RS485 serial port.
In an alternative embodiment, the energy storage system testing device further includes: a switch;
The switch is connected with the battery management system and the local controller through Ethernet respectively and is used for transmitting data output by the local controller to the battery management system.
In an alternative embodiment, the energy storage system testing device further comprises at least one of:
The digital input signal analog board is used for generating a digital input signal in an analog mode and inputting the digital input signal into the control system as test data;
And the digital output signal analog board is used for receiving the digital control signal output by the control system and converting the digital output signal into a switching value signal so as to indicate the control result of the control system.
In an alternative embodiment, the energy storage system testing device further includes: a test control unit;
the test control unit is connected with the control system through an RS485 serial port and is used for generating a test result according to response data of the control system to the battery test data or the peripheral test data.
In summary, according to the energy storage system testing device provided by the embodiment of the application, the energy storage battery in the actual energy storage system is simulated through the battery simulation system, each external device in the actual energy storage system is simulated through the peripheral simulation system, data possibly generated by the energy storage battery and the external device thereof during actual operation are generated, the data are used as test data and output to the control system to be tested, the control system comprises a battery management system, a local controller and the like, and whether the software program of the control system stores errors or not and whether related functions accord with design expectations or not is tested according to the response of the control system to the test data. According to the testing device provided by the embodiment, the control system of the energy storage system can be tested without waiting for the production and installation of the actual hardware equipment of the energy storage system, so that the program problem of the control system can be found and modified as soon as possible, the workload of the whole test before the project delivery of the energy storage system is reduced, the testing efficiency is improved, and the delivery delay is avoided.
According to the hardware configuration condition of the actual energy storage system, the corresponding simulation units such as the PCS simulation unit, the liquid cooling machine simulation unit, the air conditioner simulation unit, the fire-fighting combustible controller simulation unit and the like are arranged in the peripheral simulation system, and the DI simulation board and the DO simulation board can be configured according to the switching value signals generated by hardware equipment, so that various equipment or signals related to the control system can be simulated, and comprehensive test of the control system is ensured.
Drawings
FIG. 1 is a block diagram of an energy storage system testing apparatus according to an embodiment of the present application;
FIG. 2 is a block diagram of an energy storage system according to an embodiment of the present application;
Fig. 3 is a schematic diagram of a testing device for an energy storage system according to an embodiment of the present application.
Detailed Description
The application is further described in detail below by means of the figures and examples. The features and advantages of the present application will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.
In order to improve the test efficiency and avoid the delay delivery caused by the test and modification of the energy storage system, the embodiment of the application provides the test device of the energy storage system.
Fig. 2 is a block diagram of an energy storage system according to an embodiment of the present application. Referring to fig. 2, the energy storage system 200 may include an energy storage battery 210 for storing electric energy, an external device 220 for providing support for charging and discharging the energy storage battery 210, grid connection, etc., and a control system 230 for controlling the energy storage battery 210, the external device 220, and the entire energy storage system.
Among them, the external device 220 may include: an energy storage converter (Power Conversion System, PCS) 221 connected between the energy storage battery 210 and the power grid or ac load, for controlling the charge and discharge of the energy storage battery and realizing bidirectional conversion of electric energy; and may also include air conditioning 222, liquid cooling (not shown in fig. 2), fire fighting equipment (not shown in fig. 2), and the like.
The control system 230 may include: the energy management system (ENERGY MANAGEMENT SYSTEM, EMS) 231 is used for comprehensively monitoring the real-time operation information and the alarm information of the energy storage battery and carrying out multi-aspect statistics and analysis on the energy storage system so as to realize the full-aspect control on the energy storage system; a Battery management system (Battery MANAGEMENT SYSTEM, BMS) 232 for monitoring and evaluating the state of the energy storage Battery, preventing the energy storage Battery from being overcharged and discharged, improving the utilization rate of the energy storage Battery, and prolonging the service life of the energy storage Battery; the Local Controller (LC) 233 is responsible for receiving data output from the BMS and the PCS, and then performs logic judgment to determine whether the system has errors and faults, thereby performing protection control, and simultaneously uploading the data to the EMS, etc.
According to the structure, hardware devices such as an energy storage battery and PCS in the energy storage system are important, but a control system such as BMS is also a key for guaranteeing safe operation of the system. Therefore, the control system of the software class is tested in the early stage of the project and before the production and installation of the hardware equipment, and the problem of software program self is found and modified in time, so that the phenomena of equipment and related personnel safety threat caused by hardware equipment fault alarm delay, even alarm omission and the like due to software program errors in the whole test process of the system can be avoided, the test time is shortened, the test efficiency is improved, and the phenomena of equipment safety threat caused by software program errors in the whole test process of the system can be avoided.
Therefore, the energy storage system testing device provided by the embodiment of the application can be applied to testing the control system of the software class in the current period of the energy storage system item. Fig. 1 is a block diagram of a structure of the energy storage system testing device. Referring to fig. 1, the energy storage system testing apparatus 10 includes:
The battery simulation system 11 is configured to simulate an energy storage battery of an energy storage system to generate battery test data, and transmit the battery test data to a control system 230 to be tested in the energy storage system, so as to test a response function of the control system to the battery test data;
A peripheral simulation system 12 for simulating an external device of the energy storage battery to generate peripheral test data and transmitting the peripheral test data to the control system to test an interactive function between the control system and the external device;
Wherein the control system 230 comprises a battery management system; the battery test data comprises a first state parameter of the energy storage battery in the charging and discharging process; the peripheral test data includes a second state parameter of the external device, which is matched with the first state parameter, when the external device assists the energy storage battery in charging and discharging.
The above-mentioned battery simulation system 11 is used for simulating the energy storage battery 210 in the energy storage system 200 shown in fig. 2, and the peripheral simulation system 12 is used for simulating the external device 220 in the energy storage system 200 shown in fig. 2; the designed control system 230 is used as a test object, and forms a simulation test system together with the battery simulation system 11 and the peripheral simulation system 12, and the battery simulation system 11 and the peripheral simulation system 12 can output state data, fault data and the like possibly generated in the actual operation process of the energy storage battery 210 and the external equipment 220 thereof according to a pre-configured test case, namely, the battery test data and the peripheral test data are input into the control system 230 to be tested, and whether the control system 230 can accurately send and receive the data, and whether the control system 230 can accurately respond to various received data can be judged through response actions, generated response instructions and the like of the control system 230 to the test data.
Because in the actual energy storage system, the external device is used for charging and discharging the energy storage battery, the relevance between the operation states of the external device and the energy storage battery can be considered when the battery simulation system 11 and the peripheral simulation system 12 are configured for the test cases, so that the battery test data output by the battery simulation system 11 and the peripheral test data output by the peripheral simulation system 12 are matched, and the operation conditions of the external device and the energy storage battery in the actual energy storage system are met. For example, if the battery test data output by the battery simulation system 11 includes first state parameters such as voltage and current of the energy storage battery in a discharging state, the peripheral test data output by the peripheral simulation system 12 correspondingly includes second state parameters such as dc input current and ac output current of the energy storage converter when the energy storage battery is controlled to be discharged.
In practical application, corresponding test cases can be configured according to the specific functions of the designed control system, so that each function of the control system is ensured to be tested. After the control system passes all the function tests, the software program is free of errors, and then after the hardware equipment of the energy storage system is prepared, when the control system passing the test is tested with the actual hardware equipment, the fault investigation caused by the software program errors can not occur any more, and only the compatibility of the hardware equipment or the software and the hardware is required to be tested, so that the system test time before project delivery is greatly shortened, the test efficiency is improved, and project delay delivery is avoided.
It may be understood that the control system of the software class to be tested in this embodiment may include a software program itself, and may further include a chip carrier such as an integrated circuit, a memory, and a processor that stores and executes the software program, where when the test device in this embodiment tests whether the software program itself has a problem of a logic error, a code error, and the like, the test device may also test the data processing speed of the relevant chip, the compatibility with the software program, and other performances of the relevant chip, so as to ensure that the control system applied to the real energy storage system may accurately and timely implement the control function thereof.
In an alternative embodiment, the battery simulation system 11 may include: hardware-in-Loop (HARDWARE IN THE Loop, HIL) simulation system.
The HIL system comprises a battery system model, can realize the simulation and Output of various battery characteristics, such as battery charge and discharge, aging and the like, and performs real-time data interaction with a tested control system through an Input/Output (IO) hardware board card and a communication board card to form a semi-physical simulation of a signal level, namely a closed-loop test environment of a real controller and a virtual object.
In an alternative embodiment, battery test data output by battery simulation system 11 includes, but is not limited to, battery voltage, battery temperature, and the like. Specifically, the battery test data is input to the battery management system 232 in the control system 230 to be tested, so as to test the functions of monitoring and evaluating the state of the energy storage battery by the battery management system.
Fig. 3 is a schematic diagram of a testing device for an energy storage system according to an embodiment of the present application. Referring to fig. 3, the control system under test includes a battery management system 232; the battery management system 232 can be designed into a secondary architecture or a tertiary architecture according to factors such as the size of the energy storage battery, the control complexity and the like required by an actual system; in this embodiment and fig. 3, taking a three-stage architecture as an example, the battery management system 232 includes three-stage control units, i.e., a slave control unit 2321, a master control unit 2322, and a master control unit 2323, to implement hierarchical management and control from a battery module (also called a battery pack) to a battery cluster to a battery stack (also called a battery array).
The slave unit 2321 is generally called a battery management unit (Battery Management Unit, BMU), and is mainly used for collecting a battery cell voltage (i.e. a voltage of each battery pack), a battery temperature, and the like; the master control unit 2322 is generally called a battery cluster management unit (Battery Cluster management Unit, BCU) and is used for receiving the data uploaded by the slave control unit, so as to collect the voltage, current and other data of each battery cluster, protect and control the single battery and the like; the master control unit 2323 is generally called a battery array unit (Battery Array Unit, BAU) and is used for receiving data uploaded by the master control unit, and implementing data storage, display, alarm and real-time communication with external devices or EMS (energy management system) of the whole battery stack. The slave unit 2321 and the master unit 2322 may be connected and communicated in a daisy chain manner, and the master unit 2322 and the master unit 2323 may be connected and communicated through a controller area network (Controller Area Network, CAN) bus.
It should be noted that, specific names of the slave, master and master control units may be different from each other, for example, the slave control Unit may also be referred to as a cell monitoring Unit (Cell Supervision Unit, CSU), the master control Unit may also be referred to as a Battery stack management Unit (BSU), etc., which is not limited in this embodiment.
As shown in fig. 3, when the test is performed, the battery test data output by the battery simulation system 11 may include multiple voltage data and multiple temperature data, where the multiple voltage data and the multiple temperature data are input to the slave control unit 2321 first, and then may be uploaded to the master control unit 2322 and the master control unit 2323 step by step, where each level of control unit may process and respond to the received battery test data, and return the generated response data to the lower level control unit, and finally return the received response data to the battery simulation system 11, so as to determine whether each function and performance of the battery management system 232 meet the design expectations according to the battery test data output by the battery simulation system 11 and the received response data.
In an alternative embodiment, the energy management system 231 of the control system 230 shown in fig. 2 may also be the test object of the test device 10 provided in this embodiment; as shown in fig. 3, during the test, the test data received by the battery management system 232 and the generated response data may be uploaded to the energy management system 231 by the master control unit 2323 through the EtherNet (ETH), and a control instruction fed back by the energy management system 231 is received; communication between the battery management system 232 and the energy management system 231 is based on IEC61850 protocols.
In an alternative embodiment, the peripheral simulation system 12 may include an energy storage converter simulation unit, a liquid chiller simulation unit, and the like.
The energy storage converter simulation unit communicates with a master control unit 2323 in the battery management system 230 to be tested through a CAN bus; the energy storage converter simulation unit is configured to simulate the energy storage converter 221 in the external device 220 of the energy storage system 200 shown in fig. 2, generate first peripheral test data, i.e. PCS simulation data, and transmit the first peripheral test data to the master control unit 2323 through the CAN bus, as shown in fig. 3, so as to implement the communication and control function test between the battery management system 230 and the PCS.
The above-mentioned liquid cooling machine simulation unit communicates with the master control unit 2323 in the battery management system 230 to be tested based on the RS485 communication standard; the liquid cooler simulation unit is used for simulating one or more liquid coolers (not shown in fig. 2) in the external device 220 of the energy storage system 200, generating second external test data, namely liquid cooler simulation data, and transmitting the second external test data to the master control unit 2323 through an RS485 serial port, as shown in fig. 3, so as to realize communication and control function test between the battery management system 230 and the liquid coolers.
In an alternative embodiment, the control system 230 to be tested may further include a local controller 233 in the energy storage system 200 shown in fig. 2. As shown in fig. 3, the local controller 233 may communicate with the master control unit 2323 in the battery management system 232 through ethernet, and the data received by the local controller 233 may be uploaded to the master control unit 2323, and the data is summarized by the master control unit 2323 and then uploaded to the EMS.
In an actual application scenario, the energy storage system may include a plurality of local controllers; in view of this, in an alternative embodiment, the energy storage system testing apparatus 10 may further include a switch, which is connected to the battery management system 232 and the plurality of local controllers through ethernet, respectively, that is, the plurality of local controllers may communicate with the master control unit 2323 in the battery management system 232 through the switch at the same time.
In an alternative embodiment, the peripheral simulation system 12 may further include an air conditioning simulation unit, a fire control simulation unit, etc. for the local controller 233 to be tested.
The air conditioner simulation unit and the fire control simulation unit are both in communication with the local controller 233 based on the RS485 communication standard, and the air conditioner simulation unit is configured to simulate the air conditioner 222 in the external device 220 of the energy storage system 200 shown in fig. 2, generate third peripheral test data, i.e. air conditioner simulation data, and transmit the third peripheral test data to the local controller 233 through the RS485 serial port, and the fire control simulation unit is configured to simulate the fire control device of the energy storage system to generate fourth peripheral test data, i.e. fire control simulation data, and transmit the fourth peripheral test data to the local controller 233 through the RS485 serial port, as shown in fig. 3.
The embodiment of the application tests the control function, communication function and the like of the local controller 233 on related peripheral devices by simulating the external devices such as the air conditioner, the fire-fighting combustible controller and the like controlled by the local controller in the energy storage system through the air conditioner simulation unit, the fire-fighting simulation unit and the like. In an actual application scenario, the peripheral simulation system may be implemented by a pre-written peripheral simulation program, where the peripheral simulation program may run on one or more computers and communicate with a control system to be tested to implement the test device according to the embodiment of the present application.
In an alternative embodiment, the testing device 10 may further include a temperature and humidity sensor 13 for the local controller 233 to be tested; the temperature and humidity sensor 13 communicates with the local controller 233 through an RS485 serial port, as shown in fig. 3.
In the testing process, the temperature and humidity sensor 13 may collect data of the temperature, the humidity, etc. of the environment and transmit the data to the local controller 233, so as to test the function of the local controller 233 for controlling related peripherals according to the temperature, the humidity, etc. of the environment, for example, when the temperature of the environment is higher, the temperature sensor controls the air conditioner to enter the cooling mode or reduces the temperature threshold of the cooling mode.
In an alternative embodiment, the energy storage system testing device 10 provided in the embodiment of the present application may further include: at least one of a digital input signal analog board and a digital output signal analog board.
The Digital Input signal analog board, i.e., DI analog board 14 shown in fig. 3, is configured to generate a Digital Input (DI) signal corresponding to a switching value signal generated in an actual energy storage system in an analog manner, and Input the Digital Input signal as test data to a test object such as a battery management system 232 and a local controller 233, so as to test a response function of the battery management system 232 and the local controller 233 to relevant device status data in the energy storage system.
The above-mentioned Digital Output signal analog board, namely, the DO analog board 15 shown in fig. 3, is configured to receive a Digital Output (DO) signal Output by the control system, and convert the Digital Output signal into a switching value signal, so as to indicate a control result of the control system.
The switching value signals, namely high and low level signals, correspond to the possibly generated starting/stopping states, closing states and the like of related equipment in an actual energy storage system, and correspond to digital signals, namely binary characters or character strings formed by 1 and 0, the switching value signals are converted into digital input signals to be input into a control system and are directly recognized and processed by a related processing chip of the control system; on the contrary, the signals directly output by the control system are all digital output signals, and the signals need to be converted into switching value signals in a high-low level mode to control shutdown/startup of related equipment or control switching on/off of a switching device.
Optionally, the DI analog board 14 may be configured with 4 fire main contacts, 1 switch-on signal contact, 1 UPS (i.e., uninterruptible Power Supply, uninterruptible power supply) main contacts, and 2 shutdown signal main contacts. The DO analog board 15 may be configured with 4 fault analog signal contacts and 2 shutdown signal dry contacts. The DO analog board 15 can indicate the converted switching value signal through an indicator light and the like, so that the digital signal output by the control system can be determined, whether the digital signal matches with the test data received by the control system or not can be judged, and the design expectation of the control system is met.
Therefore, the digital input signal analog board and the digital output signal analog board can test the functions of the control system, such as receiving, responding and outputting of simple switching value signals, without configuring complex analog units, and are beneficial to controlling the cost of the test device.
In an alternative embodiment, the test device 10 for an energy storage system according to the embodiment of the present application may further include a test control unit 16, configured to collect and display test data and response data of the control system, and generate a test result according to the test data and the response data, and may specifically include a display, a processor, and the like.
In some possible embodiments, as shown in fig. 3, the test control unit 16 may be configured as a unit parallel to the battery simulation system 11 and the peripheral simulation system 12, and obtain, based on the RS485 communication standard, battery test data and response data thereof, peripheral test data and response data thereof, and the like from the master control unit 2323 of the battery management system 232, and process and determine the same, to produce a corresponding test result.
In other possible embodiments, the test control unit may be distributed in the battery simulation system 11 and the peripheral simulation system 12, and process and determine the response data of each and generate the test result.
The embodiment of the application does not limit the specific implementation form of the test control unit, and can be configured according to actual test scenes and test requirements.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for apparatus and system embodiments, the description is relatively simple, as it is substantially similar to method embodiments, with reference to the description of method embodiments in part.
One or more embodiments of the present specification are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to one or more embodiments of the specification. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are directions or positional relationships based on the operation state of the present application are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined and limited. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The application has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the application can be subjected to various substitutions and improvements, and all fall within the protection scope of the application.
Claims (10)
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