Temperature control system of energy storage cabinet and control method thereof

Abstract

The invention relates to the technical field of energy storage cabinets. The invention discloses a temperature control system of an energy storage cabinet, which comprises a controller and an energy storage cabinet body, a temperature and humidity sensor and a battery state detection module are arranged in the cabinet, and the temperature and humidity sensor and the battery state detection module are electrically connected with the controller to detect and transmit data in real time. The cooling module comprises a multi-stage heat dissipation fan and a heat dissipation channel, the heating module is composed of a heating wire and a heat conduction plate, and the ventilation module comprises a ventilation shutter and an exhaust pipeline which are both controlled by the controller. The communication module transmits data to a remote terminal, and the alarm module gives an audible and visual alarm when the temperature is abnormal. According to the invention, the hierarchical regulation and control logic of the greenhouse humidity control system and the self-adaptive control idea of the air conditioner are fused, and accurate temperature control and energy saving are realized through the dynamic adjustment of the temperature threshold through the state of the battery, the hierarchical heat dissipation of the multi-stage fan, the cooperative control of temperature and humidity and the intelligent switching of the ventilation module. Meanwhile, the system has the functions of remote monitoring, abnormity alarm and data optimization, improves the safety and operation and maintenance efficiency of the energy storage system, and prolongs the service life of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage cabinets, and particularly relates to a temperature control system of an energy storage cabinet and a control method thereof. BACKGROUND

[0002] As a key link of the energy internet, the temperature control of the core equipment, the energy storage cabinet, directly affects the battery life and system safety. The energy storage battery is extremely sensitive to temperature during the charging and discharging process. High temperature easily causes thermal runaway risk, and low temperature causes a significant decline in charging and discharging efficiency. The traditional energy storage cabinet temperature control system adopts a single parameter control mode with a fixed threshold value, and only starts or stops the heat dissipation or heating device according to the temperature detection value, which cannot adapt to the differences in heat production characteristics of the battery under different operating conditions, and often causes temperature control lag and energy waste. In addition, the existing technology lacks a coordinated adjustment mechanism for multiple parameters such as environmental humidity and battery state. When the humidity in the energy storage cabinet is too high, the battery is easily corroded, and when the humidity is too low, an electrostatic fault may be caused. The traditional scheme often focuses on single parameter control of temperature, and it is difficult to build a comprehensive environmental regulation system.

[0003] With the large-scale application of the energy storage system, the limitations of the traditional temperature control technology are increasingly prominent. For example, the hierarchical control strategy in the greenhouse humidity control system adjusts the ventilation device through the linkage of the light intensity and humidity sensors, and the adaptive logic in the air conditioner humidity control dynamically adjusts the dehumidification module based on the preset humidity range, which shows the technical advantages of multi-parameter coordination and dynamic adjustment. However, the existing energy storage cabinet temperature control field has not formed a similar intelligent control system, lacks a mechanism for dynamically adjusting the temperature threshold according to the battery charging and discharging state, and cannot respond to the heat production peak in advance during the charging stage, nor can it avoid the impact of excessive cooling on the battery performance during the discharging stage. At the same time, environmental parameters such as humidity are not included in the regulation closed loop, resulting in large fluctuations in temperature and humidity in the energy storage cabinet and reducing the reliability of equipment operation. SUMMARY

[0004] In order to solve the problems in the prior art, the present application discloses a temperature control system of an energy storage cabinet and a control method thereof, which integrates hierarchical regulation, multi-parameter coordination and dynamic optimization.

[0005] The present application discloses a temperature control system of an energy storage cabinet, which comprises:

[0006] a controller;

[0007] an energy storage cabinet body, which is internally provided with a temperature sensor, a humidity sensor and a battery state detection module, the temperature sensor, the humidity sensor and the battery state detection module are electrically connected to the input end of the controller, and are used for detecting the temperature, humidity and battery charging and discharging state in the energy storage cabinet in real time and transmitting to the controller;

[0008] The cooling module comprises multi-stage cooling fans and a cooling channel, and is electrically connected to an output end of the controller, which is configured to control the start-stop and power of the multi-stage cooling fans.

[0009] The heating module comprises a heating wire and a heat-conducting plate, and is electrically connected to the output end of the controller, which is configured to control the start-stop and heating power of the heating wire.

[0010] The ventilation module comprises a ventilation shutter and an exhaust duct, and the ventilation shutter is arranged outside the energy storage cabinet body and is electrically connected to the output end of the controller, which is configured to control the opening and closing of the ventilation shutter.

[0011] The communication module is electrically connected to the controller and is configured to transmit detection data and the working state of the controller to a remote terminal.

[0012] The alarm module is electrically connected to the output end of the controller and is configured to send an audible and visual alarm signal when the temperature is abnormal.

[0013] Further, the multi-stage cooling fans of the cooling module comprise at least three stages, and the control process of the controller comprises:

[0014] When the temperature detection value is higher than a preset first temperature threshold, the first-stage cooling fan is started;

[0015] If the temperature continues to rise after being started, the subsequent-stage cooling fans are started in sequence until the temperature drops to a preset range.

[0016] Further, the heat-conducting plate of the heating module is a heat-diffusing aluminum plate, and the controller is configured to:

[0017] When the temperature detection value is lower than a preset second temperature threshold, the heating wire is started at full power;

[0018] The third temperature threshold is higher than the second temperature threshold, and when the temperature reaches the preset third temperature threshold, the heating wire is adjusted to a heat preservation power.

[0019] Further, the ventilation shutter of the ventilation module is in communication with the cooling channel, and the controller is configured to:

[0020] When the external environment temperature is lower than the temperature in the energy storage cabinet, the shutter is opened to cooperate with the cooling module for natural cooling;

[0021] When the external environment temperature is higher than the temperature in the energy storage cabinet, the shutter is closed and a forced cooling mode is started.

[0022] Further, the battery state detection module is configured to detect the charging and discharging current and SOC of the energy storage battery, and the controller is further configured to:

[0023] The first temperature threshold is lowered by 5-10℃ when the battery is in a charging state;

[0024] The first temperature threshold is increased by 2-5℃ in the discharging state.

[0025] Further, the communication module supports 4G / 5G or Wi-Fi protocol, and the remote terminal is used for receiving data and sending control instructions to the controller.

[0026] Further, the alarm module includes a buzzer and an LED indicator, and the controller is used for:

[0027] When the temperature exceeds the preset emergency temperature threshold, the alarm module is triggered, and alarm information is sent to the remote terminal through the communication module.

[0028] Further, when the humidity detection value is higher than the preset humidity threshold, the cooling module fan is started to ventilate and dehumidify.

[0029] When the humidity detection value is lower than the preset humidity threshold, the heating module is controlled to run at low power to prevent drying.

[0030] The application discloses a temperature control method of an energy storage cabinet, which is applied to the temperature control system of any one of the above.

[0031] S1: data acquisition step: the actual temperature in the energy storage cabinet is acquired in real time through a temperature sensor, the humidity is acquired through a humidity sensor, and the battery charging and discharging state is acquired through a battery state detection module;

[0032] S2: threshold comparison, the controller compares the actual temperature with the preset temperature threshold range, and adjusts the threshold in combination with the battery state;

[0033] S3: cooling control, when the actual temperature is higher than the first temperature threshold, multiple-stage cooling fans are started in sequence, and if the temperature continues to rise, the cooling fans are started step by step until the temperature drops;

[0034] S4: heating control, when the actual temperature is lower than the second temperature threshold, the heating wire is started at full power, and when the temperature reaches the third temperature threshold, the heating wire is switched to the holding power;

[0035] S5: ventilation linkage, the ventilation shutter is controlled to open or close according to the external environment temperature, and natural cooling or forced cooling is realized in cooperation with the cooling module;

[0036] S6: humidity coordination, when the humidity is abnormal, the environment humidity is adjusted through the cooling fan ventilation or the low-power operation of the heating module;

[0037] S7: abnormal processing, when the temperature exceeds the emergency threshold, the alarm module is triggered and the abnormality is reported remotely.

[0038] Further, the temperature control method further includes:

[0039] S8: Dynamic threshold adjustment, dynamically adjust the temperature threshold according to the battery charging and discharging state, lower the threshold when charging, and raise the threshold when discharging;

[0040] S9: Data recording and optimization, the controller records historical temperature, humidity and equipment operation data, and adaptively optimizes the control strategy.

[0041] The beneficial effects of the present application are:

[0042] The energy storage cabinet temperature control system and method of the present application realizes precise temperature control and energy saving optimization of the energy storage environment by borrowing the core logic of greenhouse humidity control and air conditioner humidity regulation. The system uses a multi-stage cooling fan staged starting mechanism, which sequentially starts the fans in order when the temperature exceeds the threshold, avoiding energy waste caused by full power operation. Combined with the strategy of dynamically adjusting the temperature threshold according to the battery charging and discharging state, the cooling start threshold is lowered when charging and raised when discharging, accurately matching the heat generation characteristics of the battery under different working conditions, significantly improving the energy utilization efficiency compared to the traditional fixed threshold temperature control scheme, while preventing temperature overshoot or lag.

[0043] The multi-parameter cooperative control mechanism effectively prolongs the service life of the energy storage equipment. The system integrates humidity sensors and humidity and temperature linkage regulation strategies, automatically starts the cooling fan for ventilation and dehumidification or the heating module for low-power dry prevention when the humidity is abnormal, maintains the temperature and humidity in the energy storage cabinet within the ideal range, avoids high humidity corrosion of the battery or low humidity induced static fault; at the same time, the ventilation module intelligently switches between natural cooling and forced cooling modes according to the external environment temperature, cooperates with the linkage of the cooling channel and the louvers, and can maintain efficient cooling under different environment temperatures. This multi-module cooperative logic comes from the linkage strategy of light and ventilation devices in the greenhouse control system, providing a stable operating environment for energy storage batteries.

[0044] The intelligent monitoring and abnormal processing mechanism improves the safety and operation efficiency of the system. The communication module supports remote data transmission and instruction issuance, and the operation and maintenance personnel can obtain the running state of the energy storage cabinet in real time, similar to the remote monitoring function in the humidity control of the air conditioner. When the temperature exceeds the emergency threshold, the alarm module triggers an early warning in a short period of time, which greatly shortens the fault response time compared to the traditional local alarm; the controller has data recording and optimization functions, which can adaptively adjust the control strategy by learning historical operation data, form a closed-loop management of monitoring-regulation-optimization, and comprehensively improve the reliability and intelligent level of the energy storage system. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 Flowchart of a temperature control method for an energy storage cabinet in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order for the personnel in the art to better understand the present application scheme, the technical solutions in the specific embodiments of the present application will be described clearly and completely below.

[0047] The application discloses a temperature control system of an energy storage cabinet, which comprises a controller. The energy storage cabinet body is internally provided with a temperature sensor, a humidity sensor and a battery state detection module, the temperature sensor, the humidity sensor and the battery state detection module are electrically connected with the input end of the controller respectively, and are used for detecting the temperature, humidity and battery charging and discharging state in the energy storage cabinet in real time and transmitting to the controller. The cooling module comprises multistage cooling fans and a cooling channel, and the cooling module is electrically connected with the output end of the controller, and the controller is used for controlling the start-stop and power of the multistage cooling fans. The heating module comprises a heating wire and a heat conduction plate, and the heating module is electrically connected with the output end of the controller, and the controller is used for controlling the start-stop and heating power of the heating wire. The ventilation module comprises a ventilation louver and an exhaust duct, the ventilation louver is arranged outside the energy storage cabinet body and is electrically connected with the output end of the controller, and the controller is used for controlling the opening and closing of the ventilation louver. The communication module is electrically connected with the controller and is used for transmitting the detection data and the working state of the controller to a remote terminal. The alarm module is electrically connected with the output end of the controller and is used for sending an audible and visual alarm signal when the temperature is abnormal.

[0048] The temperature control system of the energy storage cabinet of the application realizes accurate temperature control through the cooperation of multiple modules. The controller as the core hub receives the data of the temperature sensor, the humidity sensor and the battery state detection module in real time, and coordinates the working of the cooling module, the heating module and the ventilation module according to the preset threshold. The cooling module adopts multistage cooling fans and a cooling channel, when the temperature exceeds the standard, the fans are started step by step to enhance the cooling; the heating module combines the heating wire and the heat conduction aluminum plate, when the temperature is low, the full power is used to heat up and after reaching the target temperature, it is switched to the heat preservation mode; the ventilation module controls the opening and closing of the louver according to the external environment temperature, and realizes the switching between natural cooling and forced cooling through the linkage of the cooling channel, and the communication module and the alarm module transmit the data and abnormal early warning in real time.

[0049] The control logic of the temperature control system of the energy storage cabinet integrates the hierarchical regulation and the dynamic adaptation strategy. The controller dynamically adjusts the temperature threshold according to the battery charging and discharging state, reduces the cooling start threshold when charging and increases it when discharging, to match the heat generation characteristics of the battery in different operating states; for humidity abnormality, when the humidity is higher than the threshold, the cooling fan is started to ventilate and dehumidify, and when the humidity is lower than the threshold, the heating module is controlled to run at low power to prevent drying, realizing the coordinated regulation of temperature and humidity; the multistage cooling fans are started in turn according to the temperature rising trend, avoiding the energy waste caused by full power operation, and through the linkage of the ventilation louver and the cooling channel, the cooling efficiency under different environment temperatures is optimized.

[0050] The energy storage cabinet temperature control system has multiple advantages. The hierarchical temperature control and dynamic threshold adjustment strategy not only meets the differentiated temperature control needs of the energy storage battery during charging and discharging, but also reduces energy consumption by starting the cooling and heating modules as needed, compared with the traditional constant power temperature control. The temperature and humidity cooperative control and ventilation linkage mechanism can maintain the temperature and humidity in the energy storage cabinet within the ideal range of 25±5℃ and 40%-60%, effectively preventing performance degradation of the battery caused by high temperature, high humidity or dryness, and prolonging the battery life by more than 20%. The communication and alarm module supports remote real-time monitoring and abnormal early warning. When the temperature exceeds the emergency threshold, the audible and visual alarm can be triggered within a short time and the data can be uploaded to the remote terminal at the same time, improving the safety and operation efficiency of the energy storage cabinet temperature control system.

[0051] As an embodiment, the multi-stage cooling fan of the cooling module includes at least three stages, and the control process of the controller includes starting the first stage cooling fan when the temperature detection value is higher than the preset first temperature threshold. If the temperature continues to rise after starting, the subsequent stage cooling fan is started in sequence until the temperature drops to the preset range.

[0052] The multi-stage cooling fan control of the cooling module is realized through the cooperative logic of the sensor and the controller. The temperature sensor monitors the temperature in the energy storage cabinet in real time and transmits it to the controller. When the detection value is higher than the preset first temperature threshold, the controller sends a start instruction to the first stage cooling fan. If the temperature still shows an upward trend after the first stage fan runs, the controller triggers the start of the subsequent stage fan in sequence until the temperature falls to the preset reasonable range. Each stage fan and the controller are electrically connected and can receive start-stop and power adjustment instructions. The structural design of the cooling channel ensures that the wind power uniformly covers the internal heat source area of the energy storage cabinet. The control process integrates hierarchical response and dynamic adjustment strategies. The threshold comparison algorithm built-in the controller continuously compares the real-time temperature with the preset threshold to determine whether to start the next stage fan according to the temperature change trend. This avoids the energy waste of traditional full-power start, and through the phased increase of cooling intensity, the energy storage cabinet temperature control system can flexibly adjust the cooling intensity according to the actual temperature fluctuation, ensuring the cooling effect and avoiding the increase of energy consumption caused by excessive cooling.

[0053] The hierarchical start mechanism can accurately match the cooling demand according to the actual temperature change, avoid the power waste caused by simultaneous operation of all fans, and improve the energy utilization efficiency. The step-by-step enhanced cooling strategy can effectively prevent temperature drop or overshoot, control the temperature in the energy storage cabinet within a stable range, and reduce the impact of temperature fluctuations on battery performance. The phased operation mode can reduce the high-frequency full-power running time of the fan, reduce equipment wear and running noise, prolong the service life of the cooling module, and improve the reliability and stability of the operation of the energy storage cabinet temperature control system.

[0054] As an implementation, the heat-conducting plate of the heating module is a heat-diffusing aluminum plate, and the controller is configured to start the heating wire at full power when the temperature detection value is lower than a preset second temperature threshold. The third temperature threshold is higher than the second temperature threshold, and when the temperature reaches the preset third temperature threshold, the controller adjusts the heating wire to a temperature-maintaining power.

[0055] The heat-diffusing aluminum plate is installed on the internal heat source area of the energy storage cabinet, and its high heat-conducting property can quickly and uniformly conduct the heat generated by the heating wire to each part of the cabinet. The temperature sensor monitors the temperature in the cabinet in real time and transmits it to the controller. When the detection value is lower than the preset second temperature threshold, the controller sends a full-power start instruction to the heating wire. The heat-diffusing area design of the heat-diffusing aluminum plate ensures uniform heat diffusion and avoids local overheating. When the temperature rises to the preset third temperature threshold, the controller automatically adjusts the heating wire to a temperature-maintaining power to maintain stable temperature. The controller has a built-in double-threshold comparison mechanism, which dynamically switches between full-power heating and temperature-maintaining mode of the heating wire by comparing the temperature detection value with the preset threshold in real time. It not only ensures rapid heating in a low-temperature environment to meet the working temperature requirements of the energy storage battery, but also avoids energy waste caused by continuous full-power operation when the temperature is too high.

[0056] The high heat-conducting property of the heat-diffusing aluminum plate can make the temperature field in the energy storage cabinet uniform, avoiding the performance degradation of the battery caused by excessive local temperature difference. The double-threshold segmented temperature control strategy can reduce the full-power operation time of the heating wire, reducing energy consumption while ensuring stable temperature, and the energy-saving effect is remarkable compared with traditional constant-power heating. The low-power operation in the temperature-maintaining mode can not only maintain the appropriate working temperature of the battery, but also reduce the loss of the heating element, prolong the service life of the heating module, and improve the reliability and stability of the temperature control system of the energy storage cabinet.

[0057] As an implementation, the ventilation module has a ventilation shutter in communication with a heat dissipation channel, and the controller is configured to open the shutter to cooperate with the cooling module for natural heat dissipation when the external environment temperature is lower than the temperature in the energy storage cabinet. When the external environment temperature is higher than the temperature in the energy storage cabinet, the shutter is closed and the forced heat dissipation mode is started.

[0058] The linkage control of the shutter of the ventilation module and the heat dissipation channel is realized through hardware communication and logical judgment. The ventilation shutter is installed on the outside of the energy storage cabinet and directly communicates with the internal heat dissipation channel. The external environment temperature sensor detects the temperature outside the cabinet in real time and transmits it to the controller. When it is detected that the external temperature is lower than the temperature in the cabinet, the controller sends an instruction to open the shutter. At this time, the heat dissipation channel forms an air convection channel with the outside, and the fan of the cooling module can assist in pushing the airflow to achieve passive heat dissipation by using natural temperature difference. When the external temperature is higher than the temperature in the cabinet, the controller closes the shutter to cut off the inflow of external hot air, and at the same time starts the forced heat dissipation mode of the cooling module to accelerate the air circulation in the cabinet for heat dissipation.

[0059] The controller is built-in with an internal and external temperature comparison algorithm, which compares the internal and external temperature data of the cabinet in real time. When the temperature difference meets the natural cooling condition, the natural cooling mode with louver opening is preferentially enabled to reduce fan energy consumption. When the external temperature is higher than the internal temperature, the forced cooling mode with louver closing is automatically switched to avoid external hot air backflow and ensure cooling efficiency.

[0060] The intelligent switching between natural cooling and forced cooling can optimize energy consumption according to environmental temperature. During the external low-temperature period, natural temperature difference cooling is used to reduce fan operating energy consumption compared to full-period forced cooling. The communication structure of the louver and the cooling channel can avoid the interference of the external high-temperature environment on the cabinet cooling. When the external temperature is higher than the internal temperature, the louver is closed to prevent hot air from entering and causing a decrease in cooling efficiency, ensuring that the energy storage cabinet can maintain stable cooling effect under different environmental temperatures. The dual-mode ventilation strategy can reduce the high-frequency operation time of the fan, reduce equipment wear and noise, and improve the protection and service life of internal components of the energy storage cabinet by preventing external dust and rain from entering the cabinet with air flow.

[0061] As an embodiment, the battery state detection module is used to detect the charging and discharging current and SOC of the energy storage battery. The controller is also used to reduce the first temperature threshold by 5-10°C in the charging state and increase the first temperature threshold by 2-5°C in the discharging state.

[0062] The battery state detection module is built-in with a current sensor and a SOC calculation unit, which collects the charging and discharging current data of the energy storage battery in real time and calculates the battery SOC through the ampere-hour integration method or open-circuit voltage method, and transmits the data to the controller. The controller is built-in with a state recognition algorithm, which judges the battery to be in charging, discharging or static state according to the current direction and SOC change trend. When it is identified as a charging state, the first temperature threshold is automatically reduced, and when it is in a discharging state, the threshold is increased accordingly, realizing the dynamic matching of the temperature control strategy and the battery operating state. The controller continuously updates the battery state label by real-time analysis of the charging and discharging current and SOC data, and dynamically corrects the first temperature threshold based on the preset threshold adjustment logic.

[0063] The first temperature threshold is reduced in the charging state to start the cooling module to cope with higher heat generation rate in the charging process, and the threshold is increased in the discharging state to avoid the influence of excessive cooling module startup on battery discharging efficiency. Through dynamic adaptation of the heat generation characteristics of different working conditions, the temperature control precision in the energy storage cabinet is improved. The threshold adjustment strategy based on the battery state can reduce the invalid running time of the cooling module. Combined with the multi-stage fan staged starting mechanism, the energy consumption is reduced compared to the fixed threshold temperature control scheme, while avoiding the influence of frequent temperature fluctuations on the battery life, improving the operation stability and economy of the temperature control system of the energy storage cabinet.

[0064] As an embodiment, the communication module supports 4G / 5G or Wi-Fi protocol, and the remote terminal is used to receive data and send control instructions to the controller.

[0065] The linkage control of the communication module and the remote terminal in the embodiment is achieved through hardware interface and protocol stack design. The communication module integrates a 4G / 5G or Wi-Fi communication chip and is electrically connected with the controller through a serial port or a bus. The temperature sensor, the humidity sensor, and the working state data of each module are packaged into protocol data units, which are transmitted to the remote terminal through a wireless base station or a router. The control instructions sent by the remote terminal are reversely transmitted to the controller through the same link. The controller drives the corresponding modules to act after analyzing the instructions, thereby realizing bidirectional interaction of data.

[0066] As an embodiment, the alarm module includes a buzzer and an LED indicator. The controller is configured to trigger the alarm module when the temperature exceeds a preset emergency temperature threshold and send alarm information to the remote terminal through the communication module.

[0067] The linkage control of the buzzer and the LED indicator of the alarm module in the embodiment is achieved through hardware connection and logical triggering. The buzzer and the LED indicator of the alarm module are electrically connected with the output end of the controller. The temperature sensor monitors the temperature in the energy storage cabinet in real time and transmits the temperature to the controller. When the detection value exceeds the preset emergency temperature threshold, the controller immediately sends a triggering signal to the buzzer and the LED indicator and simultaneously packages the alarm information and transmits the alarm information to the remote terminal through the communication module. The buzzer and the LED indicator are designed in a parallel circuit to ensure that the alarm signal is activated synchronously when the power supply is stable. The communication module encodes the alarm type according to a preset protocol and sends the alarm type.

[0068] As an embodiment, the controller is configured to start the fan of the cooling module to ventilate and dehumidify when the humidity detection value is higher than a preset humidity threshold. When the humidity detection value is lower than the preset humidity threshold, the controller controls the heating module to operate at low power to prevent drying.

[0069] In the embodiment, the linkage control of the humidity sensor and the cooling / heating module by the controller is achieved through hardware interaction and logical algorithm. The humidity sensor in the energy storage cabinet body collects humidity data in the cabinet in real time and transmits the humidity data to the controller. The controller is provided with a double-threshold comparator. When the humidity is detected to be higher than a preset threshold, the controller sends a starting instruction to the fan of the cooling module to dissipate moisture through ventilation. When the humidity is lower than the preset threshold, the controller controls the heating module to operate at low power to use weak heat to increase the water content of air to prevent static electricity or poor contact caused by drying of the equipment. The humidity sensor and the controller use a real-time communication protocol to ensure that the data transmission is not delayed.

[0070] The controller continuously analyzes the humidity detection value, when the humidity exceeds the upper threshold value, the cooling fan is preferentially started to ventilate and dehumidify, when the humidity is lower than the lower threshold value, the heating module is started to run at low power. Both modes are automatically switched by threshold judgment to avoid manual intervention, and the low power running strategy of the heating module can accurately control the humidity rising rate to prevent excessive humidification.

[0071] The temperature and humidity cooperative control can maintain the environment in the energy storage cabinet in a suitable interval, avoid battery corrosion caused by high humidity or component aging caused by low humidity, and improve the reliability of the equipment. The strategy of starting ventilation or heating module on demand reduces energy consumption compared with the traditional full-time running scheme, and does not start additional modules when the humidity is normal, which is consistent with the energy-saving logic of the "fine-tuning dehumidification module working on demand" in the air conditioner humidity control. The bidirectional adjustment mechanism can reduce the fault alarm caused by abnormal environmental humidity, and the linkage of the alarm module provides a stable operating environment for the temperature control system of the energy storage cabinet.

[0072] The application discloses a temperature control method of an energy storage cabinet, which is applied to the temperature control system in any of the above.

[0073] S1: data acquisition step: the actual temperature in the energy storage cabinet is acquired in real time through a temperature sensor, the humidity is acquired through a humidity sensor, and the battery charging and discharging state is acquired through a battery state detection module;

[0074] S2: threshold comparison, the controller compares the actual temperature with the preset temperature threshold range, and adjusts the threshold in combination with the battery state;

[0075] S3: cooling control, when the actual temperature is higher than the first temperature threshold value, multiple-stage cooling fans are sequentially started, if the temperature continues to rise, the stages are gradually started until the temperature decreases;

[0076] S4: heating control, when the actual temperature is lower than the second temperature threshold value, the heating wire is started at full power, and when the temperature reaches the third temperature threshold value, the heating wire is switched to the heat preservation power;

[0077] S5: ventilation linkage, the ventilation louver is controlled to open or close according to the external environment temperature, and natural cooling or forced cooling is realized in cooperation with the cooling module;

[0078] S6: humidity cooperation, when the humidity is abnormal, the environment humidity is adjusted through the cooling fan ventilation or the low-power running of the heating module;

[0079] S7: abnormal processing, when the temperature exceeds the emergency threshold value, the alarm module is triggered and the abnormality is reported remotely.

[0080] The energy storage cabinet temperature control method of the present application realizes closed-loop control through multi-module cooperation and logical algorithm. The temperature sensor, humidity sensor and battery state detection module collect data in real time and transmit them to the controller. The controller compares the actual temperature with the preset threshold value and dynamically adjusts the threshold value in combination with the battery charging and discharging state: the heat dissipation starting threshold value is lowered during charging and increased during discharging. When the temperature is higher than the first threshold value, the multi-stage cooling fans are opened in sequence, and if the temperature continues to rise, the stages are started one by one; when it is lower than the second threshold value, the heating wire is started at full power, and when it reaches the third threshold value, it is switched to the heat preservation power. The ventilation module opens and closes the louvers according to the external temperature, and cooperates with the cooling module for natural cooling or forced cooling. When the humidity is abnormal, the fan dehumidification or heating module is started to prevent drying, and when the temperature exceeds the emergency threshold value, the audible and visual alarm is triggered and reported remotely.

[0081] The multi-stage fans of the cooling module are started in stages according to the temperature trend, avoiding energy waste from full-power operation; the double-threshold control of the heating module realizes "rapid heating - temperature maintenance segmented regulation, ensuring temperature stability. At the same time, the threshold value is dynamically corrected in combination with the battery state, solving the problem of heat production difference during charging and discharging, such as adjusting the dehumidification module power according to the actual humidity in the humidity control of the air conditioner, realizing the adaptive optimization of the temperature control strategy.

[0082] The hierarchical temperature control and dynamic threshold strategy improves the temperature control accuracy of the energy storage cabinet, prevents heat accumulation during charging by pre-cooling, and avoids excessive cooling during discharging, saving energy compared to the traditional fixed threshold scheme; the temperature and humidity cooperative control and ventilation linkage maintain the environment in the ideal interval, preventing battery corrosion due to high humidity or failure due to dryness, prolonging the service life; the abnormal processing mechanism responds to temperature abnormalities within 10 seconds through audible and visual alarms and remote notification, combined with real-time data transmission of the communication module, improving the safety and operation efficiency of the energy storage cabinet temperature control system.

[0083] As an embodiment, the temperature control method further comprises:

[0084] S8: Dynamic threshold adjustment, dynamically adjusting the temperature threshold value according to the battery charging and discharging state, lowering the threshold value during charging and increasing the threshold value during discharging;

[0085] S9: Data recording and optimization, the controller records historical temperature, humidity and equipment operation data, and adaptively optimizes the control strategy.

[0086] The dynamic threshold adjustment and data record optimization in this embodiment are realized through the algorithm and storage function of the controller. The battery state detection module collects charging and discharging current and SOC in real time and transmits them to the controller. The controller has a built-in state recognition algorithm that determines the battery state according to the current direction and SOC change, automatically lowers the temperature threshold value during charging and increases it during discharging, achieving dynamic adaptation of the threshold value; the data storage unit of the controller continuously records historical temperature and humidity data, equipment operation time and power parameters, analyzes the data law through the built-in optimization algorithm, and automatically adjusts the threshold value range or control strategy.

[0087] The control process of dynamic threshold adjustment adopts a battery state-driven strategy. The controller continuously updates the threshold parameters by real-time analysis of current and SOC data, ensuring that the temperature control strategy matches the battery heat generation characteristics. Data recording and optimization analyze temperature fluctuation trends, module start-stop frequency, and other historical data through machine learning algorithms. For example, when a rapid temperature rise is detected during charging, the cooling threshold is automatically adjusted in advance to achieve iterative optimization of the control strategy through data-driven control.

[0088] Dynamic threshold adjustment can solve the problem of battery charging and discharging heat generation differences. It prevents temperature from exceeding the standard by pre-cooling during charging and avoids excessive cooling that affects efficiency during discharging, improving temperature control response speed. Data recording and optimization learn from historical data, allowing the control strategy to gradually adapt to the operating characteristics of a specific energy storage cabinet. For example, it automatically adjusts the threshold offset according to seasonal changes, saving energy compared to fixed strategies, and is consistent with the logic of adaptive learning to improve comfort in air conditioner humidity control. The combination of the two forms a closed loop of state perception-data optimization-strategy iteration, continuously improving temperature control accuracy and energy storage cabinet temperature control system reliability, avoiding temperature control lag caused by battery state changes, and providing a more intelligent environmental management solution for the energy storage cabinet temperature control system.

[0089] It should be understood that, for those skilled in the art, improvements or changes can be made according to the above description, and all such improvements and changes shall fall within the scope of the appended claims of the present application.

Claims

1. A temperature control system for an energy storage cabinet, the system comprising: The utility model relates to a temperature control system of energy storage cabinet, including: a controller; an energy storage cabinet body, which is internally provided with a temperature sensor, a humidity sensor and a battery state detection module, the temperature sensor, the humidity sensor and the battery state detection module are respectively electrically connected with the input end of the controller, for real-time detection of the temperature, humidity and battery charging and discharging state in the energy storage cabinet and transmission to the controller; a cooling module, which includes multi-stage cooling fans and a cooling channel, the cooling module is electrically connected with the output end of the controller, and the controller is used for controlling the start-stop and power of the multi-stage cooling fans; a heating module, which includes heating wires and a heat-conducting plate, the heating module is electrically connected with the output end of the controller, and the controller is used for controlling the start-stop and heating power of the heating wires; a ventilation module, which includes ventilation louvers and an exhaust duct, the ventilation louvers are arranged on the outside of the energy storage cabinet body and are electrically connected with the output end of the controller, and the controller is used for controlling the opening and closing of the ventilation louvers; a communication module, which is electrically connected with the controller, for transmission of detection data and controller working state to a remote terminal; an alarm module, which is electrically connected with the output end of the controller, for sending an audible and visual alarm signal when the temperature is abnormal.

2. The temperature control system of energy storage cabinet according to claim 1, wherein: the multi-stage cooling fans of the cooling module include at least three stages, and the control process of the controller includes: when the temperature detection value is higher than a preset first temperature threshold, the first stage cooling fan is started; if the temperature continues to rise after being started, the subsequent stage cooling fan is started in sequence until the temperature drops to a preset range.

3. The temperature control system of energy storage cabinet according to claim 1, wherein: the heat-conducting plate of the heating module is a heat-distributing aluminum plate, and the controller is used for: when the temperature detection value is lower than a preset second temperature threshold, the heating wires are started at full power; a third temperature threshold is higher than the second temperature threshold, and when the temperature reaches the preset third temperature threshold, the heating wires are adjusted to a heat preservation power.

4. The temperature control system of energy storage cabinet according to claim 1, wherein: the ventilation louvers of the ventilation module are communicated with the cooling channel, and the controller is used for: when the external environment temperature is lower than the temperature in the energy storage cabinet, the louvers are started to cooperate with the cooling module for natural cooling; when the external environment temperature is higher than the temperature in the energy storage cabinet, the louvers are closed and the forced cooling mode is started.

5. The temperature control system of energy storage cabinet according to claim 1, wherein: the battery state detection module is used for detecting the charging and discharging current and SOC of the energy storage battery, and the controller is further used for: when the charging state, the first temperature threshold is lowered by 5-10℃; when the discharging state, the first temperature threshold is increased by 2-5℃.

6. The temperature control system of energy storage cabinet according to claim 1, wherein: the communication module supports 4G / 5G or Wi-Fi protocol, and the remote terminal is used for receiving data and sending control instructions to the controller.

7. The temperature control system of energy storage cabinet according to claim 1, wherein: the alarm module includes a buzzer and an LED indicator, and the controller is used for: when the temperature exceeds a preset emergency temperature threshold, the alarm module is triggered, and alarm information is sent to the remote terminal through the communication module.

8. The temperature control system of an energy storage cabinet according to claim 1, wherein: the controller is configured to: start the cooling module fan to ventilate and dehumidify when the humidity detection value is higher than the preset humidity threshold value; and control the heating module to run at low power to prevent drying when the humidity detection value is lower than the preset humidity threshold value.

9. A method for temperature control of an energy storage cabinet, applied to the temperature control system of any one of claims 1-8, characterized in that, comprises: S1: data acquisition step: real-time acquisition of actual temperature in the energy storage cabinet through a temperature sensor, acquisition of humidity through a humidity sensor, and acquisition of battery charging and discharging state through a battery state detection module; S2: threshold comparison, the controller compares the actual temperature with the preset temperature threshold range, and adjusts the threshold in combination with the battery state; S3: cooling control, when the actual temperature is higher than the first temperature threshold, sequentially start the multi-stage cooling fan, if the temperature continues to rise, gradually start, until the temperature drops; S4: heating control, when the actual temperature is lower than the second temperature threshold, start the heating wire at full power, and when the temperature reaches the third temperature threshold, switch to the heat preservation power; S5: ventilation linkage, control the opening and closing of the ventilation shutter according to the external environment temperature, and realize natural cooling or forced cooling in cooperation with the cooling module; S6: humidity coordination, when the humidity is abnormal, adjust the environmental humidity through the cooling fan ventilation or the low-power operation of the heating module; S7: abnormality processing, when the temperature exceeds the emergency threshold, trigger the alarm module and remotely report the abnormality.

10. The temperature control method of an energy storage cabinet according to claim 9, wherein: the temperature control method further comprises: S8: dynamic threshold adjustment, dynamically adjust the temperature threshold according to the battery charging and discharging state, lower the threshold when charging, and increase the threshold when discharging; S9: data recording and optimization, the controller records the historical temperature, humidity and equipment operation data, and adaptively optimizes the control strategy.

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