Exhaust air control method and system

Abstract

This application provides a ventilation control method and system. The method includes: acquiring environmental monitoring signals within an energy storage system, the environmental monitoring signals including combustible gas concentration signals; determining a target pulse width modulation signal with a corresponding duty cycle based on the combustible gas concentration signals; and driving a ventilation device to operate at a target speed corresponding to the duty cycle according to the target pulse width modulation signal, thereby ventilating the energy storage system. This solution dynamically generates a target pulse width modulation signal with a corresponding duty cycle based on the real-time combustible gas concentration within the energy storage system, enabling stepless speed control of the ventilation device to adapt the fan speed to the current combustible gas concentration, thus improving the accuracy of ventilation control.

Description

Technical Field

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

[0002] With the rapid development of energy technology, energy storage systems are being widely deployed in data centers, new energy power plants, electric vehicle charging stations, distributed energy systems, and other scenarios. In these scenarios, energy storage systems may release flammable gases such as hydrogen, methane, and carbon monoxide during charging and discharging due to electrochemical reactions. If the concentration of flammable gases reaches the explosion limit, there will be a risk.

[0003] In related technologies, the concentration of combustible gases is controlled through a fixed strategy.

[0004] However, this approach suffers from low accuracy. Summary of the Invention

[0005] This application provides an exhaust control method and system to improve the accuracy of exhaust control.

[0006] In a first aspect, embodiments of this application provide an exhaust control method, comprising: acquiring an environmental monitoring signal inside an energy storage system, the environmental monitoring signal including a combustible gas concentration signal; determining a target pulse width modulation signal with a corresponding target duty cycle based on the combustible gas concentration signal; and driving an exhaust device to operate at a target speed corresponding to the target duty cycle based on the target pulse width modulation signal, so as to exhaust the energy storage system.

[0007] In one possible implementation, determining the target pulse width modulation signal with the corresponding target duty cycle based on the combustible gas concentration signal includes: determining a target feature value corresponding to the combustible gas concentration signal; if the target feature value is greater than or equal to a feature value threshold, determining the target risk level corresponding to the target feature value; and determining the target pulse width modulation signal based on the target risk level.

[0008] In one possible implementation, determining the target feature value corresponding to the combustible gas concentration signal includes: determining the target communication protocol corresponding to the combustible gas concentration signal; and parsing the combustible gas concentration signal according to the format of the target communication protocol to obtain the target feature value.

[0009] In one possible implementation, the environmental monitoring signal further includes a smoke concentration signal and a temperature signal; determining the target risk level corresponding to the target feature value includes: determining the smoke concentration corresponding to the smoke concentration signal, determining the temperature corresponding to the temperature signal; determining a smoke concentration threshold and a temperature threshold; if the smoke concentration is less than or equal to the smoke concentration threshold and the temperature is less than or equal to the temperature threshold, then determining the target risk level corresponding to the target feature value.

[0010] In one possible implementation, determining the target pulse width modulation signal based on the target risk level includes: determining a mapping relationship between the risk level and the duty cycle; determining the target duty cycle corresponding to the combustible gas concentration signal based on the target risk level and the mapping relationship; and generating the target pulse width modulation signal based on the target duty cycle.

[0011] In one possible implementation, after the drive ventilation device operates at the target speed corresponding to the target duty cycle, the method further includes: if the smoke concentration is greater than the smoke concentration threshold and / or the temperature is greater than the temperature threshold, then controlling the ventilation device to stop operating.

[0012] In one possible implementation, after the drive ventilation device operates at the target speed corresponding to the target duty cycle, the method further includes: acquiring feedback information on the operation of the ventilation device; determining the current speed and current value of the ventilation device from the feedback information; and performing alarm processing based on the target speed, the current speed, the current value, and the current threshold.

[0013] Secondly, embodiments of this application provide an exhaust control system, including: a combustible gas detector, an exhaust device, a communication device, and a controller; wherein, the communication device is connected to the exhaust device and the controller, and the communication device is used to forward signals; the controller is connected to the combustible gas detector, and the controller is used to acquire environmental monitoring signals generated by the combustible gas detector for the internal environment of the energy storage system, the environmental monitoring signals including combustible gas concentration signals; the controller is also used to determine a target pulse width modulation signal with a corresponding target duty cycle based on the combustible gas concentration signal; the communication device is used to receive the target pulse width modulation signal and send the target pulse width modulation signal to the exhaust device to drive the exhaust device to operate at a target speed corresponding to the target duty cycle, so as to exhaust the energy storage system.

[0014] In one possible implementation, the exhaust device includes a housing and a fan. The housing includes an air inlet and an air outlet, and the air inlet and the air outlet are equipped with dust filters. The air inlet and the air outlet are arranged opposite to each other to form an air duct. The fan is disposed inside the housing, and the airflow direction of the fan at least partially overlaps with the air duct.

[0015] In one possible implementation, the exhaust control system further includes a smoke detector and a temperature sensor; wherein the smoke detector is connected to the communication device and is used to generate a smoke concentration signal according to a target communication protocol; the temperature sensor is connected to the communication device and is used to generate a temperature signal according to the target communication protocol.

[0016] Thirdly, embodiments of this application provide an exhaust control device, comprising: an acquisition module for acquiring environmental monitoring signals inside an energy storage system, the environmental monitoring signals including combustible gas concentration signals; a determination module for determining a target pulse width modulation signal with a corresponding target duty cycle based on the combustible gas concentration signals; and a driving module for driving an exhaust device to operate at a target speed corresponding to the target duty cycle based on the target pulse width modulation signal, so as to exhaust the energy storage system.

[0017] In one possible implementation, the determining module is specifically configured to determine the target feature value corresponding to the combustible gas concentration signal; the determining module is further configured to determine the target risk level corresponding to the target feature value if the target feature value is greater than or equal to a feature value threshold; the determining module is further configured to determine the target pulse width modulation signal based on the target risk level.

[0018] In one possible implementation, the determining module is specifically used to determine the target communication protocol corresponding to the combustible gas concentration signal; the determining module is further used to parse the combustible gas concentration signal according to the format of the target communication protocol to obtain the target feature value.

[0019] In one possible implementation, the environmental monitoring signal further includes a smoke concentration signal and a temperature signal; the determining module is specifically used to determine the smoke concentration corresponding to the smoke concentration signal and the temperature corresponding to the temperature signal; the determining module is further used to determine a smoke concentration threshold and a temperature threshold; the determining module is further used to determine the target risk level corresponding to the target feature value if the smoke concentration is less than or equal to the smoke concentration threshold and the temperature is less than or equal to the temperature threshold.

[0020] In one possible implementation, the determining module is specifically used to determine the mapping relationship between risk level and duty cycle; the determining module is further used to determine the target duty cycle corresponding to the combustible gas concentration signal based on the target risk level and the mapping relationship; the determining module is further used to generate the target pulse width modulation signal based on the target duty cycle.

[0021] In one possible implementation, the device further includes a monitoring module for controlling the exhaust equipment to stop operating if the smoke concentration is greater than a smoke concentration threshold and / or the temperature is greater than a temperature threshold.

[0022] In one possible implementation, the device further includes: an alarm module for acquiring feedback information on the operation of the exhaust equipment; the alarm module is further configured to determine the current rotational speed and current value of the exhaust equipment from the feedback information; the alarm module is further configured to perform alarm processing based on the target rotational speed, the current rotational speed, the current value, and a current threshold.

[0023] Fourthly, embodiments of this application provide an exhaust control device, including: a memory and a processor;

[0024] The memory stores computer-executed instructions;

[0025] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0026] Fifthly, embodiments of this application provide a non-volatile computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0027] In a sixth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0028] The ventilation control method and system provided in this application include: acquiring environmental monitoring signals inside an energy storage system, the environmental monitoring signals including combustible gas concentration signals; determining a target pulse width modulation signal with a corresponding duty cycle based on the combustible gas concentration signals; and driving a ventilation device to operate at a target speed corresponding to the duty cycle based on the target pulse width modulation signal, thereby ventilating the energy storage system. This scheme dynamically generates a target pulse width modulation signal with a corresponding duty cycle based on the real-time combustible gas concentration inside the energy storage system, enabling stepless speed control of the ventilation device to adapt the fan speed to the current combustible gas concentration, thus improving the accuracy of ventilation control. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 This is a schematic diagram illustrating an application scenario of an exhaust control method provided in an embodiment of this application.

[0031] Figure 2 A flowchart illustrating an exhaust control method provided in an embodiment of this application;

[0032] Figure 3 A flowchart illustrating another exhaust control method provided in an embodiment of this application;

[0033] Figure 4 A schematic diagram of the exhaust control logic provided in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram of the structure of an exhaust control system provided in an embodiment of this application;

[0035] Figure 6 This is a schematic diagram of the structure of the exhaust equipment provided in the embodiments of this application;

[0036] Figure 7 This is a schematic diagram of another exhaust control system provided in an embodiment of this application;

[0037] Figure 8 This is a schematic diagram of the structure of an exhaust control device provided in an embodiment of this application;

[0038] Figure 9 This is a schematic diagram of another exhaust control device provided in an embodiment of this application;

[0039] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0043] It should be noted that the phrase "at...time" in the embodiments of this application can refer to the instant at which a certain situation occurs, or to a period of time after the occurrence of a certain situation; the embodiments of this application do not specifically limit this. Furthermore, the display interface provided in the embodiments of this application is merely an example, and the display interface may include more or less content.

[0044] It should be noted that the ventilation control method and system of this application can be used in the field of energy storage technology, or in any field other than energy storage. The application field of the ventilation control method and system of this application is not limited.

[0045] Figure 1 This is a schematic diagram illustrating an application scenario of an exhaust control method provided in an embodiment of this application. Using the illustrated scenario as an example: An exhaust control system is used within an energy storage system to discharge combustible gases from inside the energy storage system to the outside, preventing excessively high concentrations of combustible gases inside the energy storage system and thus avoiding potential risks.

[0046] For example, energy storage systems (such as lithium-ion batteries and hydrogen fuel cells) release and store electrical energy through electrochemical reactions, which can effectively balance the supply and demand of electricity, achieve peak shaving and valley filling, and improve the stability of the power grid, playing an important role in energy technology.

[0047] In practical applications, energy storage systems may release flammable gases such as hydrogen, methane, and carbon monoxide during charging and discharging due to electrochemical reactions. If the gas concentration reaches the explosion limit, there will be a risk.

[0048] In addition, when energy storage systems operate in high-temperature, high-humidity, or dusty environments, local overheating may occur due to equipment aging, short circuits, or external environmental interference, further exacerbating the risk of gas accumulation.

[0049] In related technologies, a fixed ventilation strategy, such as a fixed fan speed, is used to discharge combustible gases from inside the energy storage system to the outside until the concentration of combustible gases inside the energy storage system is within a safe range.

[0050] However, when the concentration of combustible gas inside the energy storage system is high or the rate of combustible gas generation is high, a fixed fan speed cannot quickly control the concentration of combustible gas inside the energy storage system within a safe range. When the concentration of combustible gas inside the energy storage system is moderate or the rate of combustible gas generation is low, a fixed fan speed results in excessive energy consumption. Therefore, a fixed ventilation strategy suffers from low ventilation control accuracy.

[0051] The exhaust control method provided in this application aims to solve the above-mentioned technical problems in related technologies.

[0052] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0053] Figure 2 This application provides a flowchart illustrating an exhaust control method, which includes the following steps:

[0054] S201. Obtain environmental monitoring signals inside the energy storage system, including combustible gas concentration signals.

[0055] For example, the interior of an energy storage system, such as inside the battery compartment, is where electrochemical reactions occur. The interior of an energy storage system is a relatively sealed environment, and the flammable gases produced by the electrochemical reactions cannot be quickly dissipated, posing a safety risk.

[0056] For example, the environmental monitoring signal is an electrical signal obtained from real-time monitoring of the internal environment of the energy storage system. Among them, the combustible gas concentration signal reflects the current combustible gas concentration inside the energy storage system.

[0057] S202. Based on the combustible gas concentration signal, determine the target pulse width modulation signal with the corresponding target duty cycle.

[0058] For example, in pulse width modulation (PWM) technology, the duty cycle refers to the percentage of the total signal period that is high. It is a numerical parameter between 0% and 100% used to control the average power of the load.

[0059] For example, the target pulse width modulation signal is a square wave pulse electrical signal with a fixed frequency but an adjustable duty cycle according to instructions. After determining the duty cycle, a target pulse width modulation signal with a specified high-frequency carrier and that duty cycle is generated.

[0060] Optionally, the combustible gas concentration and / or the rate of change of combustible gas concentration are determined based on the combustible gas concentration signal, and the corresponding duty cycle is determined based on the combustible gas concentration and / or the rate of change of combustible gas concentration.

[0061] For example, the average power of the exhaust equipment can be adjusted by the duty cycle; the higher the average power, the better the exhaust effect. The corresponding duty cycle is determined based on the combustible gas concentration signal, thereby dynamically determining the average power of the exhaust equipment to match the combustible gas concentration and / or the rate of change of combustible gas concentration. This avoids the problems of poor exhaust effect or excessive power consumption caused by operating the exhaust equipment at a fixed power.

[0062] With the help of scenario examples, it can be illustrated that the higher the concentration of combustible gas, the greater the need to increase the average power of the exhaust equipment, which means that the concentration of combustible gas is positively correlated with the duty cycle.

[0063] S203. Based on the target pulse width modulation signal, drive the ventilation equipment to operate at the target speed corresponding to the target duty cycle in order to ventilate the energy storage system.

[0064] For example, the generated target pulse width modulation signal is transmitted to the drive circuit of the exhaust device. The drive circuit adjusts the average voltage applied to the fan motor according to the duty cycle of the target pulse width modulation signal.

[0065] Using a DC fan motor as an example, the steady-state speed is approximately proportional to the average voltage. By changing the duty cycle, stepless and linear control of the fan speed can be achieved. A high duty cycle corresponds to a high average voltage and high speed, resulting in a large air volume. A low duty cycle corresponds to a low speed and a small air volume. This allows for adaptive control of exhaust ventilation based on the combustible gas concentration signal, improving the accuracy of exhaust ventilation control.

[0066] The ventilation control method provided in this application acquires environmental monitoring signals inside the energy storage system, including combustible gas concentration signals; determines a target pulse width modulation signal with a corresponding duty cycle based on the combustible gas concentration signals; and drives the ventilation equipment to operate at a target speed corresponding to the duty cycle based on the target pulse width modulation signal to ventilate the energy storage system. This scheme dynamically generates a target pulse width modulation signal with a corresponding duty cycle based on the real-time combustible gas concentration inside the energy storage system, enabling stepless speed control of the ventilation equipment to adapt the fan speed to the current combustible gas concentration, thereby improving the accuracy of ventilation control.

[0067] Based on any of the above embodiments, the following, in conjunction with Figure 3 The detailed process of exhaust ventilation control is explained.

[0068] Figure 3 This is a flowchart illustrating another exhaust control method provided in an embodiment of this application. Figure 3 As shown, the method includes:

[0069] S301. Acquire environmental monitoring signals inside the energy storage system, including combustible gas concentration signals.

[0070] It should be noted that the execution process of S301 is the same as that of S201, and will not be repeated here.

[0071] S302. Determine the target feature value corresponding to the combustible gas concentration signal.

[0072] Optionally, feature screening and feature extraction can be performed on the original combustible gas concentration signal, which may contain noise or be unstable, to obtain a more direct and stable quantitative indicator that can represent the current risk status, namely the target feature value.

[0073] Optionally, the target feature value can be the combustible gas concentration itself, that is, the instantaneous or short-term average concentration value obtained after filtering, averaging, and other processing of the current combustible gas concentration signal. The combustible gas concentration can directly reflect the current combustible gas risk level.

[0074] Optionally, the target characteristic value can also be the rate of change of combustible gas concentration, which is the amount of change in combustible gas concentration per unit time (e.g., percentage per second). This is used to quantify the growth trend and rate of combustible gas, reflecting the dynamic process of risk accumulation.

[0075] Using scenario examples, it can be illustrated that the higher the concentration of combustible gas, the higher the risk. The higher the rate of change in combustible gas concentration, the higher the risk.

[0076] Based on the above implementation methods, by converting the original combustible gas concentration signal into a clear feature value that can be used for logical judgment, the appropriate target duty cycle can be accurately determined, thereby improving the accuracy of exhaust control.

[0077] One feasible implementation method is to determine the target feature value by: determining the target communication protocol corresponding to the combustible gas concentration signal; and parsing the combustible gas concentration signal according to the format of the target communication protocol to obtain the target feature value.

[0078] For example, the target communication protocol is a pre-agreed or automatically identifiable standard used to regulate data transmission formats, timing, addresses, verification, and other rules. The target communication protocol is determined during the initialization of the exhaust control system, and all signal transmissions in the exhaust control system are conducted within the framework of the target communication protocol.

[0079] Optionally, the combustible gas concentration signal can be parsed based on the format of the target communication protocol using the parser corresponding to the target communication protocol to obtain the target feature value.

[0080] Using digital communication (e.g., RS-485) as an example, frame verification (e.g., CRC check) is performed on the combustible gas concentration signal to ensure that the signal is error-free during transmission. According to the protocol, the register address containing the combustible gas concentration data is located within the data frame, and the original data value at that location is extracted. Based on the predefined unit conversion rules in the protocol, this original integer value is converted into a combustible gas concentration with a clear physical meaning. The rate of change of combustible gas concentration is then calculated based on this concentration.

[0081] In this feasible implementation, signal transmission is carried out through a structured and standardized communication protocol. The frame structure, address code, check code and other mechanisms built into the protocol can effectively resist interference during transmission, thereby improving the accuracy of target feature values ​​and thus improving the accuracy of ventilation control.

[0082] S303. If the target feature value is greater than or equal to the feature value threshold, then determine the target risk level corresponding to the target feature value.

[0083] For example, the feature value threshold is used to determine whether the current combustible gas concentration signal poses a risk. If a risk exists, the current risk is classified to determine the target risk level.

[0084] With the scenario example, the feature threshold is a small value. If the target feature value is less than the feature threshold, it means that the combustible gas inside the current energy storage system is under control and no ventilation control is required. If the target feature value is greater than or equal to the feature threshold, it means that the combustible gas inside the current energy storage system poses a risk, and the corresponding ventilation control strategy is determined based on the specific target risk level.

[0085] For example, the eigenvalue threshold corresponds to the type of the target eigenvalue. If the type of the target eigenvalue is combustible gas concentration, then the type of the eigenvalue threshold is combustible gas concentration. The same applies to the rate of change of combustible gas concentration.

[0086] Optionally, the data range in which the target feature value falls can be determined, and the risk level corresponding to the data range can be determined as the target risk level.

[0087] One feasible implementation method is to determine the target risk level by: determining the smoke concentration corresponding to the smoke concentration signal and the temperature corresponding to the temperature signal; determining the smoke concentration threshold and the temperature threshold; if the smoke concentration is less than or equal to the smoke concentration threshold and the temperature is less than or equal to the temperature threshold, then determining the target risk level corresponding to the target feature value.

[0088] The environmental monitoring signals also include smoke concentration signals and temperature signals.

[0089] For example, both the smoke concentration signal and the temperature signal are collected and generated by the sensing device.

[0090] For example, smoke concentration thresholds and temperature thresholds are used to determine whether there is a fire risk inside the energy storage system. If there is no fire risk, ventilation control is implemented to prevent ventilation operations from fueling combustion and exacerbating the fire.

[0091] Based on the scenario examples, if the smoke concentration is less than or equal to the smoke concentration threshold, the smoke inside the energy storage system is considered not severe and unrelated to a fire. Similarly, if the temperature is less than or equal to the temperature threshold, the temperature inside the energy storage system is considered to be within the normal range and unrelated to a fire.

[0092] In this feasible implementation, fire factors are eliminated before exhaust operations are performed to prevent exhaust operations from exacerbating the fire, thereby improving the accuracy of exhaust control.

[0093] S304. Determine the mapping relationship between risk level and duty cycle.

[0094] For example, a mapping between risk level and duty cycle can be pre-generated and stored.

[0095] For example, the mapping relationship defines the duty cycle appropriate for each risk level. There is a positive correlation between risk level and duty cycle; the higher the risk level, the higher the corresponding duty cycle.

[0096] S305. Determine the target duty cycle corresponding to the combustible gas concentration signal based on the target risk level and mapping relationship.

[0097] For example, the target risk level can be used as an index or key to search and match in the mapping relationship to obtain the target duty cycle that uniquely corresponds to the target risk level.

[0098] S306. Generate a target pulse width modulation signal based on the target duty cycle.

[0099] For example, a preset carrier frequency is determined, and a stable pulse square wave signal, i.e., the target pulse width modulation signal, is generated using the carrier frequency and the target duty cycle as parameters.

[0100] Based on the above implementation method, the target pulse width modulation signal matching the scenario corresponding to each combustible gas concentration signal is accurately determined through the preset mapping relationship, so as to carry out accurate air venting control according to the scenario.

[0101] S307. Based on the target pulse width modulation signal, drive the ventilation equipment to operate at the target speed corresponding to the target duty cycle in order to ventilate the energy storage system.

[0102] One feasible implementation, after driving the exhaust equipment to operate, may further include: if the smoke concentration is greater than a smoke concentration threshold and / or the temperature is greater than a temperature threshold, then controlling the exhaust equipment to stop operating.

[0103] Below, in conjunction with Figure 4 The exhaust control logic is explained.

[0104] Figure 4 This is a schematic diagram of the exhaust control logic provided in an embodiment of this application. Figure 4 As shown, a combustible gas concentration signal is acquired, and a target characteristic value is determined based on this signal. If the target characteristic value is less than a characteristic value threshold, the combustible gas concentration signal for the next cycle is acquired. If the target characteristic value is greater than or equal to the characteristic value threshold, a target pulse width modulation signal is generated to drive the ventilation equipment. After the ventilation equipment is running, the smoke concentration and temperature of the energy storage system are continuously monitored to determine if there is a fire risk. If both the smoke concentration and temperature are within acceptable limits, it is determined that there is no fire risk, and the ventilation equipment continues to run. If the smoke concentration and / or temperature exceed acceptable limits, it is determined that there is a fire risk, and the ventilation equipment is stopped to prevent the ventilation operation from exacerbating the fire.

[0105] Optionally, if the smoke concentration and / or temperature exceed the limit, the corresponding fire safety measures shall be implemented.

[0106] In this feasible implementation, after the ventilation operation is performed, the smoke concentration and temperature inside the energy storage system are continuously monitored to determine whether a fire exists, so as to avoid the ventilation operation from aggravating the fire and thus improve the accuracy of ventilation control.

[0107] One feasible implementation method, after driving the exhaust equipment to operate, may further include: obtaining feedback information on the operation of the exhaust equipment; determining the current speed and current value of the exhaust equipment from the feedback information; and performing alarm processing based on the target speed, current speed, current value, and current threshold.

[0108] For example, a data acquisition channel for status monitoring is established. Through this channel, feedback information that directly reflects the physical operating status of the exhaust equipment is read in real time. This feedback information can be used to determine whether the exhaust equipment is operating abnormally or whether it is operating according to the indicated standards.

[0109] Optionally, feedback information typically comes from the exhaust device's driver or built-in sensors. For example, the current rotation speed can be obtained via a Hall effect sensor. The current value can be obtained via a current sampling resistor.

[0110] Based on the scenario examples, compare the target speed with the current speed. If the current speed is consistently significantly lower than the target speed, it may be due to fan mechanical jamming, poor lubrication, severe dust accumulation on the blades, or insufficient driver output capacity. In this case, compare the current value with the current threshold. If the current value is much lower than the current threshold, it may be due to an electrical connection break, driver failure, or motor demagnetization.

[0111] In a scenario example, if the current speed and / or current value does not reach the expected value, the exhaust equipment will fail to operate normally as instructed, and even the target pulse width modulation signal will not achieve the target exhaust effect. Alarm handling and timely troubleshooting are crucial to achieving the target exhaust effect as quickly as possible.

[0112] In this feasible implementation, by monitoring the feedback information of the exhaust equipment operation in real time, faults can be detected and resolved in a timely manner, ensuring the effective execution of exhaust control and thus improving the reliability of exhaust control.

[0113] Figure 5 This is a schematic diagram of an exhaust control system provided in an embodiment of this application. Figure 5 As shown, it includes: a combustible gas detector, an exhaust system, a communication device, and a controller; wherein,

[0114] The communication device is connected to the ventilation equipment and the controller, and is used to forward signals;

[0115] The controller is connected to the combustible gas detector and is used to acquire the environmental monitoring signals generated by the combustible gas detector inside the energy storage system. The environmental monitoring signals include combustible gas concentration signals.

[0116] The controller is also used to determine the target pulse width modulation signal with the corresponding target duty cycle based on the combustible gas concentration signal;

[0117] The communication device is used to receive the target pulse width modulation signal and send the target pulse width modulation signal to the ventilation equipment to drive the ventilation equipment to run at the target speed corresponding to the target duty cycle in order to ventilate the energy storage system.

[0118] For example, an exhaust control system is installed inside the energy storage system to detect and exhaust the gas inside the energy storage system.

[0119] For example, a combustible gas detector continuously detects the concentration of combustible gas in the air inside an energy storage system by using built-in catalytic combustion, electrochemical, or infrared sensing elements, and converts it into a combustible gas concentration signal.

[0120] For example, the controller makes a decision by detecting the combustible gas concentration signal and generating a matching target pulse width modulation (PWM) signal based on the combustible gas concentration signal. The controller sends the target PWM signal to a communication device, which then forwards the target PWM signal to the exhaust equipment, thereby driving the exhaust equipment to operate.

[0121] Optionally, the controller may include, but is not limited to, at least one of the following: an embedded microcontroller unit (MCU), a programmable logic controller (PLC), or an energy management system (EMS).

[0122] Optionally, the communication device can be an I / O module or a communication gateway.

[0123] Optionally, the normally open NO control of the communication device is connected in series with the load, and then a 24V power supply is connected in series to the common COM port of the communication device module. The DO output of the fan driver is connected to DO2 (NO.O2 normally open) of the communication device, and connected in series with a 24V power supply. Compared with conventional energy management systems that directly connect to the input signal DI, the communication device can convert 8 DI signal inputs into 1 485 communication channel to the energy management system, enabling normal communication even when the energy management system has no DI interface.

[0124] The exhaust control system provided in this application embodiment dynamically generates a target pulse width modulation signal with a corresponding duty cycle based on the real-time combustible gas concentration inside the energy storage system collected by the combustible gas detector, so as to perform stepless speed control on the exhaust equipment, so that the fan speed is adapted to the current combustible gas concentration, thereby improving the accuracy of exhaust control.

[0125] A feasible implementation method Figure 6 This is a schematic diagram of the structure of the exhaust device provided in the embodiment of this application. The exhaust device includes a housing and a fan. The housing includes an air inlet and an air outlet, and the air inlet and air outlet are equipped with dust filters. The air inlet and air outlet are arranged opposite to each other to form an air duct. The fan is disposed inside the housing, and the airflow direction of the fan at least partially overlaps with the air duct.

[0126] For example, the box has dedicated air inlets and outlets, which are the only paths for airflow to enter and exit the box. Both the air inlet and outlet are equipped with dust filters, providing bidirectional dust protection.

[0127] For example, the air inlet and outlet are positioned opposite each other, controlling the airflow within the box to flow from the air inlet to the air outlet along a relatively direct and unobstructed path, thus forming a through-flow direct-current air duct. This minimizes airflow deflection, eddies, and resistance.

[0128] For example, a fan is positioned inside the housing, and the dominant direction of the airflow generated by the fan at least partially coincides with the direction of the air duct formed by the housing. This allows for efficient airflow transmission.

[0129] In this feasible implementation, by aligning the fan's airflow direction with the air duct at least partially, airflow can be optimized, airflow resistance reduced, and a larger effective exhaust volume obtained at the same fan speed, thereby improving the accuracy of exhaust control.

[0130] A feasible implementation method Figure 7 This is a schematic diagram of another exhaust control system provided in an embodiment of this application. The exhaust control system further includes: a smoke detector and a temperature sensor; wherein, the smoke detector is connected to a communication device and is used to generate a smoke concentration signal according to a target communication protocol; the temperature sensor is connected to the communication device and is used to generate a temperature signal according to the target communication protocol.

[0131] For example, a smoke detector is used to generate a smoke concentration signal, and a temperature sensor is used to generate a temperature signal. These two signals, together with the combustible gas concentration signal, constitute more comprehensive environmental safety status data.

[0132] For example, a smoke detector detects and generates a smoke concentration signal, which quantifies the concentration of suspended particulate matter in the air inside the energy storage system. A temperature sensor detects and generates a temperature signal, which quantifies the temperature inside the energy storage system. The smoke detector and temperature sensor are connected to a communication device, which forwards the smoke concentration signal and temperature signal to the controller in real time, enabling the controller to perform accurate ventilation control based on the smoke concentration signal and temperature signal.

[0133] Optionally, smoke detectors and temperature sensors can be aggregated to a communication device via the same communication network, and then the communication device can forward the signals.

[0134] In this feasible implementation, smoke detectors and temperature sensors can be used to assess the fire risk inside the energy storage system and make further decisions on ventilation control, thereby improving the accuracy of ventilation control.

[0135] Figure 8 This is a schematic diagram of the structure of an exhaust control device provided in an embodiment of this application. Figure 8 As shown, the exhaust control device 80 may include: an acquisition module 81, a determination module 82, and a drive module 83.

[0136] The acquisition module 81 is used to acquire environmental monitoring signals inside the energy storage system, including combustible gas concentration signals.

[0137] The determination module 82 is used to determine the target pulse width modulation signal with the corresponding target duty cycle based on the combustible gas concentration signal.

[0138] The drive module 83 is used to drive the ventilation equipment to run at the target speed corresponding to the target duty cycle according to the target pulse width modulation signal, so as to ventilate the energy storage system.

[0139] Optionally, module 81 can be executed. Figure 2 S201 in the embodiment.

[0140] Optionally, module 82 can be executed. Figure 2 S202 in the embodiment.

[0141] Optionally, driver module 83 can execute Figure 2 S203 in the embodiment.

[0142] It should be noted that the exhaust control device shown in the embodiments of this application can execute the technical solution shown in the above method embodiments, and its implementation principle and beneficial effects are similar, so they will not be described again here.

[0143] In one possible implementation, the determining module 82 is specifically used for:

[0144] Determine the target feature value corresponding to the combustible gas concentration signal;

[0145] If the target feature value is greater than or equal to the feature value threshold, then the target risk level corresponding to the target feature value is determined;

[0146] The target pulse width modulation signal is determined based on the target risk level.

[0147] In one possible implementation, the determining module 82 is specifically used for:

[0148] Determine the target communication protocol corresponding to the combustible gas concentration signal;

[0149] Based on the format of the target communication protocol, the combustible gas concentration signal is analyzed and processed to obtain the target feature value.

[0150] In one possible implementation, the environmental monitoring signal further includes a smoke concentration signal and a temperature signal; the determination module 82 is specifically used for:

[0151] Determine the smoke concentration corresponding to the smoke concentration signal, and determine the temperature corresponding to the temperature signal;

[0152] Determine the smoke concentration threshold and temperature threshold;

[0153] If the smoke concentration is less than or equal to the smoke concentration threshold and the temperature is less than or equal to the temperature threshold, then the target risk level corresponding to the target characteristic value is determined.

[0154] In one possible implementation, the determining module 82 is specifically used for:

[0155] Determine the mapping relationship between risk level and duty cycle;

[0156] Based on the target risk level and mapping relationship, determine the target duty cycle corresponding to the combustible gas concentration signal;

[0157] Generate a target pulse width modulation signal based on the target duty cycle.

[0158] Figure 9 This is a schematic diagram of another exhaust control device provided in an embodiment of this application. Figure 8 Based on the illustrated embodiments, as Figure 9 As shown, the exhaust control device 80 also includes a monitoring module 84 and an alarm module 85.

[0159] Monitoring module 84 is used for:

[0160] If the smoke concentration exceeds the smoke concentration threshold and / or the temperature exceeds the temperature threshold, the exhaust equipment will be shut down.

[0161] Alarm module 85 is used for:

[0162] Obtain feedback information on the operation of the exhaust equipment;

[0163] Determine the current speed and current value of the exhaust equipment from the feedback information;

[0164] Based on the target speed, current speed, current value, and current threshold, perform alarm processing.

[0165] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application, such as... Figure 10 As shown, the electronic device includes:

[0166] The electronic device includes a processor 291 and a memory 292; it may also include a communication interface 293 and a bus 294. The processor 291, memory 292, and communication interface 293 can communicate with each other via the bus 294. The communication interface 293 can be used for information transmission. The processor 291 can invoke logical instructions stored in the memory 292 to execute the methods of the above embodiments.

[0167] Furthermore, the logic instructions in the aforementioned memory 292 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0168] The memory 292, as a non-volatile computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this application. The processor 291 executes functional applications and data processing by running the software programs, instructions, and modules stored in the memory 292, that is, it implements the methods in the above-described method embodiments.

[0169] The memory 292 may include a program storage area and a data storage area. The program storage area may store the operating system and application programs required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 292 may include high-speed random access memory and may also include non-volatile memory.

[0170] This application provides a non-volatile computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method as described in the foregoing embodiments.

[0171] This application provides a computer program product, including a computer program that, when executed by a processor, implements the method as described in the foregoing embodiments.

[0172] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0173] It should be further noted that although the steps in the flowchart are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps; they can be executed in other orders. Moreover, at least some steps in the flowchart may include multiple sub-steps or multiple stages, which do not necessarily complete at the same time but can be executed at different times. The execution order of these sub-steps or stages is also not necessarily sequential but can be alternated or carried out in turn with other steps or at least some of the sub-steps or stages of other steps.

[0174] It should be understood that the above-described device embodiments are merely illustrative, and the device of this application can also be implemented in other ways. For example, the division of units / modules in the above embodiments is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units, modules, or components may be combined, or integrated into another system, or some features may be ignored or not executed.

[0175] Furthermore, unless otherwise specified, the functional units / modules in the various embodiments of this application can be integrated into one unit / module, or each unit / module can exist physically separately, or two or more units / modules can be integrated together. The integrated units / modules described above can be implemented in hardware or as software program modules.

[0176] When integrated units / modules are implemented in hardware, the hardware can be digital circuits, analog circuits, etc. The physical implementation of the hardware structure includes, but is not limited to, transistors, memristors, etc. The processor can be any suitable hardware processor, such as CPU, GPU, FPGA, DSP, and ASIC. The storage unit can be any suitable magnetic or magneto-optical storage medium, such as Resistive Random Access Memory (RRAM), Dynamic Random Access Memory (DRAM), Static Random Access Memory (SRAM), Enhanced Dynamic Random Access Memory (EDRAM), High-Bandwidth Memory (HBM), Hybrid Memory Cube (HMC), etc.

[0177] If the integrated unit / module is implemented as a software program module and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory 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 of the various embodiments of this application. The aforementioned memory includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0178] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.

[0179] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0180] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A ventilation control method, characterized in that, include: Acquire environmental monitoring signals inside the energy storage system, including combustible gas concentration signals; Based on the combustible gas concentration signal, determine the target pulse width modulation signal with the corresponding target duty cycle; According to the target pulse width modulation signal, the ventilation equipment is driven to operate at the target speed corresponding to the target duty cycle in order to ventilate the energy storage system.

2. The method according to claim 1, characterized in that, The step of determining the target pulse width modulation signal with the corresponding target duty cycle based on the combustible gas concentration signal includes: Determine the target feature value corresponding to the combustible gas concentration signal; If the target feature value is greater than or equal to the feature value threshold, then the target risk level corresponding to the target feature value is determined; The target pulse width modulation signal is determined based on the target risk level.

3. The method according to claim 2, characterized in that, Determining the target feature value corresponding to the combustible gas concentration signal includes: Determine the target communication protocol corresponding to the combustible gas concentration signal; According to the format of the target communication protocol, the combustible gas concentration signal is parsed and processed to obtain the target feature value.

4. The method according to claim 2, characterized in that, The environmental monitoring signal also includes smoke concentration signal and temperature signal; determining the target risk level corresponding to the target feature value includes: Determine the smoke concentration corresponding to the smoke concentration signal, and determine the temperature corresponding to the temperature signal; Determine the smoke concentration threshold and temperature threshold; If the smoke concentration is less than or equal to the smoke concentration threshold and the temperature is less than or equal to the temperature threshold, then the target risk level corresponding to the target feature value is determined.

5. The method according to claim 2, characterized in that, Determining the target pulse width modulation signal based on the target risk level includes: Determine the mapping relationship between risk level and duty cycle; Based on the target risk level and the mapping relationship, determine the target duty cycle corresponding to the combustible gas concentration signal; The target pulse width modulation signal is generated based on the target duty cycle.

6. The method according to any one of claims 1-5, characterized in that, After the drive ventilation device operates at the target speed corresponding to the target duty cycle, it further includes: If the smoke concentration is greater than the smoke concentration threshold and / or the temperature is greater than the temperature threshold, the exhaust equipment will be controlled to stop operating.

7. The method according to any one of claims 1-5, characterized in that, After the drive ventilation device operates at the target speed corresponding to the target duty cycle, it further includes: Obtain feedback information on the operation of the exhaust equipment; The current speed and current value of the exhaust equipment are determined from the feedback information; An alarm is triggered based on the target rotational speed, the current rotational speed, the current current value, and the current threshold.

8. An exhaust ventilation control system, characterized in that, include: Combustible gas detectors, ventilation equipment, communication devices, and controllers; among which, The communication device is connected to the ventilation equipment and the controller, and the communication device is used to forward signals; The controller is connected to the combustible gas detector, and the controller is used to acquire the environmental monitoring signal generated by the combustible gas detector inside the energy storage system, the environmental monitoring signal including the combustible gas concentration signal; The controller is also configured to determine a target pulse width modulation signal with a corresponding target duty cycle based on the combustible gas concentration signal; The communication device is used to receive the target pulse width modulation signal and send the target pulse width modulation signal to the ventilation device to drive the ventilation device to operate at the target speed corresponding to the target duty cycle in order to ventilate the energy storage system.

9. The system according to claim 8, characterized in that, The exhaust device includes a housing and a fan. The housing includes an air inlet and an air outlet, and both the air inlet and the air outlet are equipped with dust filters. The air inlet and the air outlet are arranged opposite to each other to form an air duct; The fan is located inside the housing, and the airflow direction of the fan at least partially overlaps with the air duct.

10. The system according to claim 8, characterized in that, The exhaust control system also includes: a smoke detector and a temperature sensor; wherein... The smoke detector is connected to the communication device, and the smoke detector is used to generate a smoke concentration signal according to the target communication protocol; The temperature sensor is connected to the communication device and is used to generate a temperature signal according to the target communication protocol.

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