A solution to the condensation phenomenon in the pack of energy storage system

Abstract

The present invention relates to the field of battery thermal management technology, and discloses a solution to the condensation phenomenon in the pack of an energy storage system, including: S1, installing a fan inside a liquid-cooled battery pack; S2, installing temperature sensors at multiple locations in the battery pack; S3, setting a temperature threshold through a control system, and when the temperature is lower than the preset threshold, the control system starts the fan to promote air circulation; when the temperature is higher than the preset threshold, the fan is turned off; S4, a condensate water discharge system is set; S5, a nano-coating is applied to the surface of key components inside the battery pack; S6, using an adaptive control algorithm to dynamically adjust the start and stop of the fan and the drainage device based on sensor data. By integrating a fan, a temperature sensor, and a humidity sensor inside the battery pack, monitoring the temperature and humidity data in real time, and dynamically adjusting the operation of the fan and the liquid cooling system through an adaptive control algorithm, the fan can be started in advance before the temperature and humidity reach the critical point of condensation, increasing air flow and preventing the formation of condensate water.

Description

Technical Field

[0001] The present invention relates to the technical field of battery thermal management, and in particular to a solution to the condensation phenomenon in an energy storage system pack. Background Art

[0002] With the widespread application of new energy electric vehicles and large-scale energy storage systems, battery management systems (BMS) and thermal management technologies have become key factors affecting system safety, performance and service life. In these energy storage systems, battery temperature control is crucial, especially during high-power discharge and charging. The temperature management system of the battery pack usually relies on liquid cooling circulation and air cooling systems. However, in the prior art, condensation inside the battery pack is prone to occur in low temperature environments or high humidity conditions, which in turn brings many problems to the safety and reliability of the battery pack.

[0003] Although existing liquid-cooled battery packs can effectively reduce the temperature of the battery during operation, in low temperature and high humidity environments, the temperature drop inside the battery pack will lead to the formation of condensation water, which easily accumulates on the battery surface, connectors or electrical components, increasing the risk of electrical short circuits and corrosion, thereby affecting the safety and life of the battery. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a solution to the condensation phenomenon in an energy storage system pack, thereby solving the problem that in a low temperature and high humidity environment, the temperature inside the battery pack of an existing liquid-cooled battery pack drops, which leads to the formation of condensed water.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A solution to the condensation phenomenon in the pack of an energy storage system, comprising: S1. Installing a fan inside the liquid-cooled battery pack, wherein the fan is arranged in an internal air circulation structure to guide air flow inside the battery pack; S2. Installing temperature sensors at multiple locations inside the battery pack, wherein the temperature sensors are used to detect the temperature at different locations inside the battery pack; S3. Setting a temperature threshold through the control system. When the temperature is lower than the preset threshold, the control system starts the fan to promote air circulation; when the temperature is higher than the preset threshold, the fan is turned off; S4, setting a condensate drainage system, the drainage system comprising a liquid level sensor and a drainage device, the liquid level sensor detecting the condensate level, when the liquid level reaches a set height, triggering the drainage device to start; S5. Coating a nano coating on the surface of key components inside the battery pack, wherein the nano coating is used to prevent condensed water from adhering to the surface of the components and provide anti-corrosion protection; S6. Use adaptive control algorithms to dynamically adjust the start and stop of fans and drainage devices based on sensor data.

[0006] Preferably, the fan is a brushless DC fan, which is fixedly mounted on the internal frame of the battery pack and forms air circulation through a preset ventilation channel.

[0007] Preferably, the temperature sensor is an NTC thermistor, which is installed around the battery module and near the coolant circulation pipeline to collect temperature information of each area.

[0008] Preferably, the control system adjusts the rotation speed of the fan through pulse width modulation and adjusts the working state of the fan according to data from the temperature sensor.

[0009] Preferably, the drainage device of the condensate discharge system is a solenoid valve structure, the liquid level sensor triggers the drainage through an electrical signal, and the solenoid valve automatically opens to discharge the condensate.

[0010] Preferably, the nano-coating is a hydrophobic material made of a polymer or a metal oxide, which is sprayed on the surface of metal contacts and cooling pipes inside the battery pack.

[0011] Preferably, the adaptive control algorithm collects and analyzes all sensor data in real time, and dynamically adjusts the start and stop cycle of the fan and the working state of the drainage device according to the ambient temperature, humidity and the formation trend of condensed water. The adaptive control algorithm combines the temperature and humidity data to predict the time point of condensed water generation, and starts the fan in advance to promote air circulation and prevent the formation of condensed water. At the same time, according to the accumulation of condensed water feedback from the liquid level sensor, the drainage device is dynamically triggered to discharge the condensed water.

[0012] Preferably, the control system also includes a humidity sensor, which is arranged in the air flow channel inside the battery pack and is used to detect the air humidity inside the battery pack; when the humidity exceeds a predetermined threshold, the control system starts the fan to reduce the humidity; the detection results of the humidity sensor are combined with the temperature sensor to realize the start and stop of the fan through the control system.

[0013] Preferably, the outer surface of the coolant circulation pipe inside the battery pack is coated with a nano-hydrophobic coating, and the nano-hydrophobic coating is used to reduce the adhesion of condensed water and reduce heat loss during the cooling process.

[0014] Preferably, the drainage pipe of the drainage device is provided with an anti-backflow valve, and the anti-backflow valve is used to prevent external moisture or water from flowing back into the battery pack through the drainage pipe.

[0015] The present invention provides a solution to the condensation phenomenon in the pack of an energy storage system. It has the following beneficial effects: 1. The present invention integrates a fan, a temperature sensor (NTC) and a humidity sensor inside the battery pack to monitor temperature and humidity data in real time, and dynamically adjusts the operation of the fan and liquid cooling system through an adaptive control algorithm. The fan can be started in advance before the temperature and humidity reach the critical point of condensation, increasing air flow and thus preventing the formation of condensed water.

[0016] 2. The present invention uses an adaptive control algorithm. The system can analyze and predict the risk of condensed water formation based on real-time data inside the battery pack, automatically adjust the start and stop and speed of the fan, optimize the working time of the coolant circulation, ensure that the temperature inside the battery pack is always kept within a reasonable range, and no excessive condensation occurs. At the same time, the operating efficiency of the fan is also improved, avoiding ineffective long-term operation and reducing the energy consumption of the system.

[0017] 3. The present invention designs a condensed water drainage system at the bottom of the battery pack. The liquid level sensor detects the accumulation of condensed water in real time, and combines the drainage device of the solenoid valve structure. When the liquid level reaches the set value, the system automatically discharges the condensed water to prevent the water from being retained in the battery pack for a long time. This design effectively solves the problem of condensed water accumulation inside the traditional battery pack.

[0018] 4. The key components inside the battery pack of the present invention, such as battery cells, connectors and cooling pipes, are protected by nano coatings. The nano coatings have excellent hydrophobicity and anti-corrosion capabilities, which can effectively prevent condensed water from adhering to the surface of the components, reduce the impact of water vapor on electrical components, and further improve the stability and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a flow chart of a solution to the condensation phenomenon in the energy storage system pack of the present invention. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Please refer to the attached Figure 1 The embodiment of the present invention provides a solution to the condensation phenomenon in the pack of an energy storage system, including: S1. Install a fan inside the liquid-cooled battery pack, and the fan is arranged in the internal air circulation structure to guide the air flow inside the battery pack; S2. Install temperature sensors at multiple locations inside the battery pack, where the temperature sensors are used to detect the temperature at different locations inside the battery pack; S3. Setting a temperature threshold through the control system. When the temperature is lower than the preset threshold, the control system starts the fan to promote air circulation; when the temperature is higher than the preset threshold, the fan is turned off; S4. Setting a condensate drainage system, the drainage system includes a liquid level sensor and a drainage device. The liquid level sensor detects the condensate level. When the liquid level reaches a set height, the drainage device is triggered to start; S5. Apply nano-coatings to the surfaces of key components inside the battery pack. The nano-coatings are used to prevent condensed water from adhering to the surface of the components and provide corrosion protection. S6. Use adaptive control algorithms to dynamically adjust the start and stop of fans and drainage devices based on sensor data.

[0022] Specifically, when designing the interior of the liquid-cooled battery pack, the fan is installed in a preset air circulation channel. The channel should be reasonably planned according to the structure and internal layout of the battery pack to ensure that the airflow can cover the key areas of the entire battery pack, especially areas with lower temperatures or prone to condensation. The fan can be fixed to the inside of the battery pack frame by a clamping structure or screws and connected to the control system by wires. To ensure the efficient operation of the fan, a DC brushless fan with waterproof and dustproof functions can be selected. Its advantages are low power consumption, long life and easy maintenance. The specifications of the fan can be customized according to the volume and heat dissipation requirements of the battery pack. The commonly used fan sizes range from 40mm to 120mm in diameter, which can be determined according to actual usage; Temperature sensors are placed in different areas inside the battery pack to fully monitor the temperature inside the battery pack. To ensure the accuracy of the sensor, NTC thermistors can be used because of their fast response speed and high precision, which are suitable for scenarios with rapid temperature changes. Temperature sensors are installed on the inner wall of the battery pack, near the battery module, and near the coolant pipe by welding or adhesion. These areas are prone to temperature fluctuations, so placing sensors can capture temperature changes in real time; The control system sets the temperature threshold through software. Usually, the temperature threshold is set to 5°C to 15°C according to the changes in the environment and the characteristics of the battery pack. When the temperature is lower than the set value, the control system starts the fan through a relay or electronic switch to start the air flow. When the temperature rises to a certain level, the control system automatically turns off the fan to avoid excessive heat dissipation and energy waste; The condensate drainage system uses a liquid level sensor to detect the accumulation of condensate at the bottom of the battery pack in real time. The liquid level sensor can be installed at the lowest point near the bottom of the battery pack to detect the accumulation of condensate in time. The liquid level sensor is connected to the drainage system. When it detects that the liquid level reaches the preset height, the drainage device starts, and the solenoid valve or mechanical valve opens the drainage channel to discharge the condensate to the outside. The drainage pipe can adopt an anti-backflow design to prevent external water vapor from flowing back into the battery pack; Key components coated with nano coatings can include battery modules, electrical connectors, and the outside of cooling pipes. Nano coatings should be made of high temperature and corrosion resistant materials, such as aluminum oxide or fluoride polymer coatings, to prevent condensed water from directly contacting these components and ensure their long-term stable operation. The coating can be evenly covered on the surface of each component by spraying or dipping, and the coating thickness should be controlled between 1 micron and 5 microns to ensure the protective effect and durability of the coating; Expanded description of adaptive control algorithm: The adaptive control algorithm is used to dynamically adjust the start and stop times and operating parameters of the fan and drainage device. The algorithm is executed by the embedded processor in the control system and performs real-time analysis of environmental conditions and battery pack status based on data collected by multiple sensors (including temperature sensors, humidity sensors, liquid level sensors, etc.).

[0023] 1. Data collection and analysis: Temperature data: Temperature data from multiple NTC thermistors is transmitted to the control system in real time. These sensors are installed at different locations inside the battery pack to ensure comprehensive monitoring of the temperature condition of the battery pack. The temperature data is collected at a high frequency (e.g. once per second) and stored in the control system's memory for further processing.

[0024] Humidity data: Humidity sensors are installed in the airflow path to detect the humidity level of the air inside the battery pack. Humidity data is combined with temperature data to form a complete description of environmental conditions. Humidity data is also transmitted at a high frequency and stored in the system.

[0025] Liquid level data: The liquid level sensor in the condensate drainage system detects the condensate level at the bottom of the battery pack and provides water level information to the control system. This data is used to determine whether the drainage device needs to be opened.

[0026] 2. Adaptive algorithm structure: Algorithm module division: The adaptive control algorithm consists of multiple functional modules, mainly including data acquisition module, data processing module, prediction module and decision module. Each module interacts with the controller through the system bus to form a complete decision-making system.

[0027] Prediction model: The core of the algorithm is a set of prediction models based on machine learning or adaptive control. The model uses historical data to analyze the temperature change patterns, humidity rising trends, the time point of condensation water formation, and the working status of the battery pack in various environments to determine possible condensation problems in advance. By modeling historical data (such as the temperature curve and humidity curve of the battery pack), the system can predict whether there is a possibility of condensation water accumulation at a certain point in the future.

[0028] 3. Dynamic adjustment mechanism: Dynamic adjustment of fan start and stop: When the prediction model determines that the temperature inside the battery pack is about to drop to the threshold and the humidity rises to near the condensation point, the adaptive algorithm will automatically adjust the fan's operating mode. For example, if the temperature is close to the condensation point, the system can start the fan a few seconds in advance to prevent condensation from forming. In addition, the fan speed is controlled by pulse width modulation (PWM), which can be fine-tuned according to real-time temperature fluctuations. When the battery pack temperature rises to a safe range, the algorithm will automatically reduce the fan speed or turn off the fan completely to save energy.

[0029] Dynamic control of the drainage device: For condensate discharge, the data from the liquid level sensor is key. When the system predicts that condensate may accumulate to a certain level within a period of time, the drainage device will be activated in advance to drain a small amount of condensate to avoid large amounts of water accumulation. In addition, when the liquid level sensor detects that the water level is close to the warning line, the drainage device automatically opens to drain the accumulated water. The length of the drainage time is automatically adjusted by the algorithm according to the water level and the operating status of the battery pack to avoid energy waste or system failure caused by frequent drainage.

[0030] 4. Self-learning ability: Self-learning function of the algorithm: The algorithm in the control system has the ability to self-learn, by collecting long-term data and continuously optimizing and adjusting the operation strategy of the fan and drainage device. The self-learning module uses historical data to analyze and iteratively update the formation rules of condensation water under different environmental conditions, thereby improving the accuracy of future decisions. The system can automatically adjust parameters such as temperature thresholds and humidity critical values ​​to cope with changes in different seasons, geographical environments, and battery pack workloads.

[0031] Feedback mechanism: The system dynamically optimizes the control strategy by analyzing the actual effects of fan start-stop and drainage device operation (such as condensate reduction, temperature recovery time, etc.). For example, if the temperature recovery is slow after the fan is started, the system may start the fan in advance the next time the temperature drops.

[0032] 5. Environmental mode adaptation: Operation modes in different environments: The system will switch algorithm strategies according to different environmental modes. For example, in a low-temperature and high-humidity environment, the system will frequently start the fan and closely monitor the formation of condensed water; in a high-temperature and dry environment, the system will reduce the use of fans and rely more on natural heat dissipation. At the same time, the operation frequency of the drainage system will also be adaptively adjusted according to humidity changes.

[0033] 6. System optimization and energy saving: Energy Optimization: The adaptive control algorithm can significantly reduce system energy consumption by intelligently adjusting fan speed and the start and stop of drainage devices. Fans only run at high speed when necessary, and run at low speed or stop completely at non-critical times, ensuring that the entire system uses energy more efficiently.

[0034] Response time optimization: The algorithm shortens the system response time through continuous iteration. When condensation is predicted to occur, the fan and drainage device can enter the working state in advance, thus effectively avoiding the accumulation of condensation water.

[0035] The fan is a brushless DC fan, which is fixedly installed on the internal frame of the battery pack and forms air circulation through the preset ventilation channel.

[0036] Specifically, the fan should be installed in the design according to the structure of the battery pack. It is usually installed on the top or side of the battery pack to ensure that its airflow can cover the entire battery module. The fan is firmly connected to the frame of the battery pack by screws or clamping structures to prevent vibration or displacement during operation. The air circulation channel is realized by rationally arranging the air inlet and outlet to ensure that the fan's airflow can flow through all battery cells and cooling ducts to form an effective heat exchange and condensed water evaporation process. The electrical connection of the fan is connected through a circuit board integrated into the control system, and the power supply voltage can select 12V or 24V DC power supply, depending on the battery pack design.

[0037] The temperature sensor is an NTC thermistor installed around the battery module and near the coolant circulation pipe to collect temperature information in each area.

[0038] Specifically, the temperature sensor uses NTC thermistors, which are arranged in different temperature zones to detect temperature changes. To ensure the accuracy of the data, the temperature sensor should be isolated from the battery module, coolant circulation pipeline and external environment to prevent external factors from interfering with the measurement results. The data is transmitted to the control system via digital signals. The control system processes the data in real time and controls the start and stop of the fan according to the set threshold. In order to further improve the accuracy of the data, multi-point measurement and data weighted average algorithm can be used to fuse and analyze multiple sensor data to obtain the overall temperature distribution map inside the battery pack.

[0039] The control system adjusts the fan speed through pulse width modulation and adjusts the fan's working state according to the data of the temperature sensor.

[0040] Specifically, the fan speed is adjusted through pulse width modulation (PWM) technology. The control system adjusts the fan's operating frequency and speed according to the data from the temperature sensor to adapt to different heat dissipation requirements. The PWM regulation circuit is integrated on the control board, and the control system dynamically adjusts the fan operation according to the preset temperature and humidity conditions. Specifically, when the temperature is low but the humidity is high, the fan can run at a low speed to reduce energy consumption; when the temperature is too high, the fan will run at a high speed to ensure that excess heat and moisture are quickly discharged.

[0041] The drainage device of the condensate discharge system is a solenoid valve structure. The liquid level sensor triggers the drainage through an electrical signal, and the solenoid valve automatically opens to discharge the condensate.

[0042] Specifically, the condensate discharge system adopts a solenoid valve structure, and the liquid level sensor is installed at the location at the bottom of the battery pack where water is most likely to accumulate. When the liquid level sensor detects that the water level exceeds the set threshold, the solenoid valve triggers drainage through an electronic signal. The drainage pipe should be made of corrosion-resistant materials, such as PVC or stainless steel, to prevent water vapor or liquid from damaging the pipe. The drain port should be designed with a structure with an anti-backflow function to prevent external moisture from flowing back into the battery pack, and the pipe connection port of the drainage system should be well sealed to ensure that there is no water vapor leakage.

[0043] Nano coating is a hydrophobic material made of polymers or metal oxides, which is sprayed on the surfaces of metal contacts and cooling ducts inside the battery pack.

[0044] Specifically, the nano coating uses polymer or metal oxide materials with hydrophobic and anti-corrosion properties. The coating is evenly sprayed on the metal connectors, cooling pipes and other components of the battery module that are susceptible to condensed water through spraying equipment. The thickness of the coating should be determined according to the temperature tolerance and mechanical requirements of the component, usually 1 to 5 microns. After the coating is cured, it can effectively prevent moisture adhesion and extend the service life of the component.

[0045] The adaptive control algorithm collects and analyzes all sensor data in real time, and dynamically adjusts the start and stop cycle of the fan and the working status of the drainage device according to the ambient temperature, humidity and the formation trend of condensed water. The adaptive control algorithm combines temperature and humidity data to predict the time point of condensed water generation, and starts the fan in advance to promote air circulation and prevent the formation of condensed water. At the same time, according to the accumulation of condensed water feedback from the liquid level sensor, the drainage device is dynamically triggered to discharge the condensed water.

[0046] Specifically, the adaptive control algorithm uses a machine learning-based model to dynamically adjust the start and stop strategies of the fan and drainage device by analyzing the historical data and environmental conditions of the battery pack. The control system can pre-set multiple environmental modes (such as high humidity and low temperature, high temperature and dryness, etc.) and adjust the operating mode of the fan and drainage system in real time based on the data collected by the sensor. The algorithm can continuously optimize system performance through a feedback adjustment mechanism to improve the accuracy of condensate discharge and fan operation efficiency.

[0047] The control system also includes a humidity sensor, which is arranged in the air flow channel inside the battery pack and is used to detect the air humidity inside the battery pack; when the humidity exceeds a predetermined threshold, the control system starts the fan to reduce the humidity; the detection results of the humidity sensor are combined with the temperature sensor to start and stop the fan through the control system.

[0048] Specifically, the additional humidity sensor is installed in the air circulation channel of the battery pack to monitor the ambient humidity. When the humidity sensor detects that the humidity inside the battery pack exceeds the set threshold, it transmits a signal to the control system to start the fan or other dehumidification equipment to ensure that the internal humidity is maintained within a reasonable range. The temperature and humidity sensors work together to achieve accurate fan start and stop and condensate discharge through comprehensive analysis of the data of both.

[0049] The outer surface of the coolant circulation pipe inside the battery pack is coated with a nano-hydrophobic coating, which is used to reduce the adhesion of condensed water and reduce heat loss during the cooling process.

[0050] Specifically, a hydrophobic nano coating is also applied to the outer surface of the coolant circulation pipe to prevent external condensed water from condensing on the surface of the cooling pipe, while reducing heat loss during the operation of the coolant. The coating is made of corrosion-resistant materials to ensure that the cooling system is in a stable working state for a long time.

[0051] The drainage pipe of the drainage device is provided with an anti-backflow valve, which is used to prevent external moisture or water from flowing back into the battery pack through the drainage pipe.

[0052] Specifically, the drainage pipe is designed with an anti-backflow valve at the drainage port to prevent external water vapor from flowing back into the battery pack. The anti-backflow valve is composed of a component with a one-way sealing structure, which allows water to flow out during drainage and automatically closes when drainage stops to prevent backflow.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solution to the condensation phenomenon in the pack of an energy storage system, characterized in that: include: S1. Installing a fan inside the liquid-cooled battery pack, wherein the fan is arranged in an internal air circulation structure to guide air flow inside the battery pack; S2. Installing temperature sensors at multiple locations inside the battery pack, wherein the temperature sensors are used to detect the temperature at different locations inside the battery pack; S3. Setting a temperature threshold through the control system. When the temperature is lower than the preset threshold, the control system starts the fan to promote air circulation; when the temperature is higher than the preset threshold, the fan is turned off; S4, setting a condensate drainage system, the drainage system comprising a liquid level sensor and a drainage device, the liquid level sensor detecting the condensate level, when the liquid level reaches a set height, triggering the drainage device to start; S5. Coating a nano coating on the surface of key components inside the battery pack, wherein the nano coating is used to prevent condensed water from adhering to the surface of the components and provide anti-corrosion protection; S6. Use adaptive control algorithms to dynamically adjust the start and stop of fans and drainage devices based on sensor data.

2. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The fan is a brushless DC fan, which is fixedly mounted on the internal frame of the battery pack and forms air circulation through a preset ventilation channel.

3. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The temperature sensor is an NTC thermistor, which is installed around the battery module and near the coolant circulation pipeline to collect temperature information in each area.

4. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The control system adjusts the speed of the fan through pulse width modulation and adjusts the working state of the fan according to the data of the temperature sensor.

5. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The drainage device of the condensate drainage system is a solenoid valve structure. The liquid level sensor triggers drainage through an electrical signal, and the solenoid valve automatically opens to discharge the condensate.

6. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The nano coating is a hydrophobic material made of polymer or metal oxide, which is sprayed on the surface of metal contacts and cooling pipes inside the battery pack.

7. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The adaptive control algorithm collects and analyzes all sensor data in real time, and dynamically adjusts the start and stop cycle of the fan and the working state of the drainage device according to the ambient temperature, humidity and the formation trend of condensed water. The adaptive control algorithm combines the temperature and humidity data to predict the time point of condensed water generation, and starts the fan in advance to promote air circulation and prevent the formation of condensed water. At the same time, according to the accumulation of condensed water feedback from the liquid level sensor, the drainage device is dynamically triggered to discharge the condensed water.

8. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The control system also includes a humidity sensor, which is arranged in the air flow channel inside the battery pack and is used to detect the air humidity inside the battery pack; when the humidity exceeds a predetermined threshold, the control system starts the fan to reduce the humidity; the detection results of the humidity sensor are combined with the temperature sensor, and the fan is started and stopped through the control system.

9. The method for solving the condensation problem in the energy storage system pack according to claim 1, characterized in that: The outer surface of the coolant circulation pipe inside the battery pack is coated with a nano-hydrophobic coating, which is used to reduce the adhesion of condensed water and reduce heat loss during the cooling process.

10. The method for solving the condensation phenomenon in the energy storage system pack according to claim 1, characterized in that: The drainage pipe of the drainage device is provided with an anti-backflow valve, and the anti-backflow valve is used to prevent external moisture or water from flowing back into the battery pack through the drainage pipe.

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