Condensate water prevention battery and condensate water prevention control method

Abstract

The invention relates to the technical field of energy storage, in particular to a condensate water prevention battery and a condensate water prevention control method. The battery module is arranged in the box body, and a surrounding channel is formed between the battery module and the inner wall of the box body; the adsorption assembly is arranged in the channel; the circulating assembly is arranged in the channel and is adjacent to the adsorption assembly; the plurality of heating pieces are arranged in the box body; the plurality of temperature and humidity sensors are distributed on the inner wall of the box body, the outer wall of the battery module and in the channel; and a battery management system. Internal environment data of the battery box body are collected through the temperature and humidity sensor, whether condensation conditions are met or not is accurately judged, the battery management system can start the circulation assembly in time to enable air to flow through the adsorption assembly to remove moisture, and formation of condensate water is effectively avoided. After the water absorption capacity of the adsorption assembly is saturated, the air can be heated through the heating piece to dehydrate the water absorption medium, the removed water is discharged, the water absorption material does not need to be frequently replaced, and the operation is simple, convenient and controllable.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, specifically to a battery and a method for preventing condensation. Background Technology

[0002] A battery (English: electric cell or battery) is a portable energy device that converts chemical energy into electrical energy. A battery generally consists of two conductive materials (positive electrode and negative electrode) and an electrolyte between them. During an internal oxidation-reduction reaction, electrons flow from the negative electrode to the positive electrode, creating an electric current in the external circuit, which can then power various electrical devices. Common batteries include lithium-ion batteries, sodium-ion batteries, nickel-metal hydride batteries, and lead-acid batteries. Using batteries as an energy source provides stable voltage and current, enabling long-term stable power supply, minimal susceptibility to external influences, and a relatively simple structure, making charging and discharging easy. They play a significant role in various aspects of modern life. With technological advancements, battery energy density has increased significantly, and cycle life has also grown substantially, leading to a wider range of applications, such as in new energy vehicles and home energy storage. When higher battery capacity is required, multiple small batteries or cells are often packaged into a larger battery pack or battery module. During use, battery packs are prone to condensation due to temperature and humidity changes. Because battery packs are relatively sealed structures, condensation is difficult to remove in time, which can easily lead to problems such as short circuits, rust, and corrosion. Currently, a hydrophobic coating is typically applied to the inside of the battery box. The condensation will slide down under gravity to a predetermined location, where it is then absorbed by absorbent material. However, the absorbent material needs to be replaced promptly once it becomes saturated, and this replacement frequency is higher in high-humidity environments. This method is cumbersome and unpredictable. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a battery that prevents condensation and a method for controlling condensation.

[0004] This invention is implemented using the following scheme: A condensation-resistant battery, comprising: Box; A battery module is disposed inside the housing, and a surrounding channel is formed between the battery module and the inner wall of the housing. An adsorption component, disposed in the channel, is used to adsorb moisture flowing through the air; A circulation component, disposed within the channel and adjacent to the adsorption component, is used to drive the air inside the box to circulate within the channel; Several heating elements are disposed inside the box body for heating the air inside the box body; Several temperature and humidity sensors are distributed on the inner wall of the box, the outer wall of the battery module, and the channel to collect environmental parameters inside the box. The battery management system is electrically connected to the temperature and humidity sensor, heating element, and circulation component, and is configured to: determine whether condensation conditions have been met based on the environmental parameters; when condensation conditions are met, start the circulation component for dehumidification; and after the water absorption capacity of the adsorption component is saturated, control the heating element and circulation component to work together to heat, dehydrate, and regenerate the adsorption component and discharge the water outside the box.

[0005] Furthermore, the adsorption assembly includes a water-absorbing box connected to the housing and a solid water-absorbing medium filled in the water-absorbing box; the outer wall of the housing is provided with a drain outlet communicating with the water-absorbing box, and the drain outlet is provided with a check valve.

[0006] Furthermore, the circulation component includes a circulation fan and a damper, the damper being an electrically adjustable valve connected between the air inlet of the circulation fan and the water absorption box; the battery management system is configured to adjust the opening of the damper in real time based on the humidity data collected by the temperature and humidity sensor.

[0007] Furthermore, there are two adsorption components and two circulation components, which are symmetrically arranged on opposite sides inside the box to allow air to circulate within the channel.

[0008] A method for preventing condensation, using the aforementioned anti-condensation battery, includes the following steps: S1: The environmental parameters inside the enclosure are obtained through the temperature and humidity sensor. The battery management system calculates the dew point temperature based on the environmental parameters and determines whether the condensation conditions have been met. S2: If the condensation condition is met, the battery management system activates the circulation component to circulate the air inside the housing in the channel and flow through the adsorption component to reduce the moisture content of the air inside the battery. S3: After the adsorption component is saturated with water, the battery management system activates the heating element and controls the circulation component to introduce hot air into the adsorption component to dehydrate and regenerate it. S4: During the dehydration and regeneration process, the water vapor desorbed from the adsorption component is discharged to the outside of the box.

[0009] Furthermore, in step S1, the environmental parameters inside the enclosure are acquired through the temperature and humidity sensor, and the battery management system calculates the dew point temperature based on the environmental parameters and determines whether condensation conditions have been met, including the following steps: The temperature and humidity sensor is used to obtain the environmental parameters inside the enclosure. The battery management system calculates the dew point temperature (Td) based on the environmental parameters. The battery management system compares the calculated dew point temperature (Td) with the minimum of the inner wall temperature (TW) of the housing and the outer wall temperature (TB) of the battery module, which are directly measured by the temperature and humidity sensor. If Td > min(TW, TB) + ΔT, then the condensation condition is considered to have been met. Where ΔT is the safety margin temperature, and its value ranges from 0.5℃ to 2℃.

[0010] Furthermore, the battery management system controls the air intake by adjusting the opening of the air valves in the circulation component. Its adjustment logic is as follows: When the detected relative humidity in the channel is higher than the first threshold, increase the opening of the damper to the first opening range; When the detected relative humidity in the channel is lower than the second threshold, reduce the opening of the damper to the second opening range; Wherein, the first threshold is greater than the second threshold, and the first opening range is greater than the second opening range.

[0011] Furthermore, the condition for determining that the adsorption component is saturated with water in step S3 is: if the internal environment of the box is still determined to have reached the condensation condition after continuously executing step S2 for a first preset time, then the adsorption component is considered to have reached the state of water saturation.

[0012] Furthermore, the condition for determining the completion of dehydration and regeneration of the adsorption component in step S4 is as follows: During the dehydration and regeneration process, the temperature and humidity values ​​at the air inlet and outlet of the circulation component are monitored in real time. When the absolute value of the temperature difference between the air outlet and the air inlet is less than the third threshold, and the absolute value of the humidity difference is less than the fourth threshold, the dehydration and regeneration is considered complete. After the adsorption component has completed dehydration and regeneration, the battery management system controls the heating element to stop heating.

[0013] Furthermore, after determining that dehydration and regeneration are complete, the circulating fan continues to run for a second preset duration to reduce the temperature inside the adsorption component to the same level as the ambient temperature.

[0014] Compared with the prior art, the present invention has the following advantages: This invention uses temperature and humidity sensors to collect environmental data inside the battery compartment, accurately determining whether condensation conditions have been met. The battery management system can promptly activate the circulation component, allowing air to flow through the adsorption component to remove moisture, effectively preventing condensation. Simultaneously, once the adsorption component's water absorption capacity is saturated, a heating element can heat the air to dehydrate the absorbent medium, and the removed moisture is discharged to the outside of the battery. This eliminates the need for frequent replacement of the absorbent material, making operation simple and controllable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a condensation-proof battery provided in Embodiment 1 of the present invention.

[0016] Figure 2 The flowchart is for the anti-condensation water control method provided in Embodiment 2 of the present invention.

[0017] The image includes: Box 1, Channel 11, Battery Module 2, Adsorption Component 3, Water Absorption Box 31, Drain 32, Check Valve 33, Temperature and Humidity Sensor 4, Heating Component 5, Battery Control System 6, Circulation Component 7, Circulation Fan 71, Air Valve 72. Detailed Implementation

[0018] To facilitate understanding of the present invention by those skilled in the art, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Example 1

[0020] Reference Figure 1 , Figure 1 The present invention provides a schematic diagram of the structure of a battery that prevents condensation. Figure 1 The battery includes: a housing 1, a channel 11, a battery module 2, an adsorption component 3, a water absorption box 31, a drain outlet 32, a check valve 33, a temperature and humidity sensor 4, a heating element 5, a battery control system 6, a circulation component 7, a circulating fan 71, and a damper 72. The anti-condensation battery includes a housing 1, a battery module 2, an adsorption component 3, several heating elements 5, several temperature and humidity sensors 4, and a battery control system 6. The battery module 2 is disposed within the housing 1, forming a surrounding channel between the battery module 2 and the inner wall of the housing 1. The adsorption component 3 is disposed within the channel to adsorb moisture flowing through the air. The circulation component is disposed within the channel and adjacent to the adsorption component to drive the air inside the housing to circulate within the channel. Several heating elements are disposed inside the housing to heat the air inside the housing. Several temperature and humidity sensors are distributed on the inner wall of the housing, the outer wall of the battery module, and the channel to collect environmental parameters inside the housing. The circulation component 7 allows air to circulate within the channel 11. The air passes through the adsorption component 3, which absorbs moisture from the air, achieving dehumidification. The battery control system 6 mainly consists of a microcontroller (MCU), a communication module, and a power management module, enabling it to quickly process data collected by various sensors and make corresponding controls.

[0021] The adsorption assembly 3 includes a water-absorbing box 31 connected to the housing 1 and a water-absorbing medium filled inside the water-absorbing box 31. The outer wall of the housing 1 has a drain outlet 32 ​​communicating with the water-absorbing box 31, and the drain outlet 32 ​​is equipped with a check valve 33. The water-absorbing box 31 is made of a corrosion-resistant and temperature-resistant material, such as polypropylene (PP). In specific implementations, the appropriate material can be selected based on actual performance requirements. The water-absorbing box 31 has a generally rectangular shape, which precisely seals the channel 11, allowing gas inside the housing 1 to pass only through the water-absorbing box 31. The water-absorbing box 31 has multiple compartments, each filled with a water-absorbing medium. The water-absorbing box 31 can be tightly connected to the inner wall of the housing 1 using fasteners, clips, sealant, etc., ensuring a secure and airtight installation and preventing air leakage. The water-absorbing medium is a material with both water-absorbing and dehydrating properties. In this embodiment, silica gel water-absorbing particles are used; in specific implementations, other 4A molecular sieve materials can also be used. The absorbent medium can quickly absorb moisture and, after absorbing moisture, can be dehydrated by heating, thereby discharging the absorbed moisture outside the battery housing 1. The particle size of the absorbent medium is selected appropriately according to the size of the absorbent box 31 to ensure good air permeability and water absorption efficiency. The drain outlet 32 ​​is connected to the bottom of the housing, and the end of the drain outlet 32 ​​extends to the outside of the housing 1. The check valve 33 is installed on the part of the drain pipe located outside the housing 1 and adopts a one-way valve structure. When the absorbent medium is heated and dehydrated, the check valve 33 opens, discharging the dehydrated moisture to the outside of the housing 1. When dehydration is not performed, the check valve 33 closes to prevent external moisture from entering the inside of the housing 1 after passing through the absorbent box 31.

[0022] The circulation component 7 includes a circulating fan 71 connected to the inner wall of the housing 1 and a damper 72 connected to the air inlet of the circulating fan 71. The damper 72 is an electrically adjustable valve connected between the air inlet of the circulating fan 71 and the water absorption box 31. The damper 72 is electrically adjustable, and its opening is adjusted by controlling the rotation angle of the motor, thereby adjusting the air intake. Specifically, the adjustment of the damper 72 is based on parameters obtained by the temperature and humidity sensor 4, and the battery control system 6 adjusts the opening of the damper 72 in real time. For example, during dehumidification, when the internal humidity of the battery is detected to be high, the control system will increase the opening of the damper 72, allowing more air to flow through the adsorption component 3 and accelerating the dehumidification speed. When the humidity gradually decreases, the opening of the damper 72 will decrease accordingly to maintain a suitable airflow and dehumidification effect.

[0023] The temperature and humidity sensor 4 is a high-precision digital sensor. Several temperature and humidity sensors 4 can be installed on the inner wall of the housing 1, the outer wall of the battery module 2, inside the water absorption box 31, and at key locations such as the air inlet and outlet of the circulating fan 71 (not all temperature and humidity sensors are shown in the attached diagram). The temperature and humidity sensors 4 can monitor the temperature and humidity data at different locations inside the battery in real time and transmit the data to the battery management system, providing accurate data for anti-condensation control. For example, the sensor installed on the inner wall of the housing 1 can monitor the overall temperature and humidity changes inside the housing 1, while the sensor installed on the outer wall of the battery module 2 can directly reflect the working status of the battery module 2, allowing the battery management system to adjust the control strategy in a timely manner. In addition, in specific implementations, air pressure sensors can also be installed on the inner and outer walls of the battery housing 1. Several heating elements 5 can be evenly distributed on the inner wall of the housing 1, the bottom of the housing 1, and the outer wall of the battery module 2 (ensuring that each battery cell can be heated). The heating elements can be tightly attached to the corresponding structure through a heat-conducting medium to ensure that heat can be transferred quickly and evenly (not all heating elements are shown in the attached figure). The heating elements 5 use PTC heating elements, which have the advantages of fast heating speed, self-regulating temperature, and safety and reliability. The heating power of the PTC heating elements is selected according to the overall size of the battery, the number of PTC heating elements, and the required heating amount. The heating elements 5 can heat the air inside the housing 1. After the circulating fan 71 is started, the hot air enters the adsorption box through the connecting pipe. The flow of hot air heats the water-absorbing medium, thereby achieving dehydration. The water removed by the water-absorbing medium is generally water vapor. Under the action of pressure difference, the water vapor is discharged to the outside of the housing 1 through the drain port 32.

[0024] Two adsorption components 3 are provided, respectively located on opposite sides inside the housing 1. Two circulation components 7 are also provided, each connected to one of the two adsorption components 3. In this embodiment, the two adsorption components 3 are symmetrically arranged, dividing the channel 11 into two parts. Under the action of the two circulating fans 71, air flows clockwise within the channel 11.

[0025] Example 2

[0026] Reference Figure 2 This embodiment provides a method for preventing condensation, including the following steps: S1: The environmental parameters inside the enclosure are obtained through the temperature and humidity sensor. The battery management system calculates the dew point temperature based on the environmental parameters and determines whether the condensation conditions have been met. S2, if the internal environment of the enclosure reaches the condensation condition, the battery management system controls the circulation fan of the circulation component to start, so that the air inside the enclosure circulates in the channel and flows through the adsorption component to reduce the moisture content of the air inside the battery. If the internal environment does not reach the condensation condition, the system waits for the set time and then repeats step S1 (adaptive settings are made according to the actual product, application environment, working conditions, etc., for example, the interval can be set to 30 minutes). S3, after the adsorption component is saturated with water, the battery management system activates the heating element and controls the circulation component to introduce hot air into the adsorption component to dehydrate and regenerate it; S4, during the dehydration and regeneration process, the water vapor desorbed from the adsorption component is discharged to the outside of the box through the drain outlet.

[0027] In step S1, the internal environmental parameters of the battery casing are obtained. Based on the environmental parameters, it is determined whether the internal conditions of the casing have reached condensation. The calculated dew point temperature is compared with the actual measured inner wall temperature of the casing and the outer wall temperature of the battery module. If the dew point temperature is higher than the inner wall temperature of the casing or the outer wall temperature of the battery module, it is determined that the internal conditions of the casing have reached condensation, and corresponding dehumidification measures need to be initiated, as follows: The calculated dew point temperature (Td) is compared with the minimum of the inner wall temperature (TW) of the box and the outer wall temperature (TB) of the battery module, which are directly measured by the temperature and humidity sensor. If Td > min(TW, TB) + ΔT, then the condensation condition is considered to have been met. Where ΔT is the safety margin temperature, and its value ranges from 0.5℃ to 2℃. In this embodiment, it can be taken as 1℃.

[0028] In step S1.1, the temperature values ​​include the temperature value of the inner wall of the box and the temperature value of the outer wall of the battery module.

[0029] The dew point temperature can be calculated using the Magnus Tetens approximation method. Based on the acquired temperature value (the average temperature collected by each temperature and humidity sensor within the channel, denoted as T) and relative humidity value (RH), combined with the air pressure value (P) inside the chamber, the dew point temperature (T) under the current environmental conditions is calculated using the Magnus Tetens equation. The expression for the Magnus Tetens equation is: T = (b × α) / (a ​​- α) Where α = ln(RH / 100) + (a × T) / (b + T), a and b are constants. When T is in the range of 0℃-60℃, a=17.27 and b=237.7℃. During the calculation, the dew point temperature is corrected by incorporating the internal air pressure (P) with the formula: T = T × (P / P), where P is the standard atmospheric pressure (1013.25 hPa), to improve the accuracy of the dew point temperature calculation. The battery control system can also calculate the pressure difference between the inside and outside of the enclosure in real time. When the pressure difference exceeds a set threshold (e.g., 50 hPa), a warning message is sent to external devices via the communication module, reminding staff to check the enclosure's sealing performance to prevent safety hazards caused by excessive pressure differences.

[0030] Alternatively, a standard enthalpy-humidity chart can be provided in advance. An enthalpy-humidity chart is a graphical tool used to represent the relationships between various parameters of moist air. Belonging to the field of air conditioning, its main function is to visually present the correlation between parameters. The horizontal axis of the enthalpy-humidity chart is the moisture content (d, g / kg), and the vertical axis is the specific enthalpy (h, kJ / kg). The chart is filled with isotherms, isohumidity lines, isenthalpic lines, and wet-bulb temperature lines. Based on the collected data, the battery management system can quickly locate and determine the dew point temperature on the enthalpy-humidity chart.

[0031] In step S2, the battery management system controls the air intake by adjusting the opening of the air valve. The adjustment logic is as follows: when the detected relative humidity in the channel is higher than a first threshold, the air valve opening is increased to the first opening range; when the detected relative humidity in the channel is lower than a second threshold, the air valve opening is decreased to the second opening range. Wherein, the first threshold is greater than the second threshold, and the first opening range is greater than the second opening range. In this embodiment, the first threshold can be 60%RH, at which point the air valve opening is adjusted to 80%~100% (e.g., 80%); the second threshold can be 40%RH, at which point the air valve opening is adjusted to 20%~40% (e.g., 30%). The airflow of the circulating fan is adjusted in real time according to the actual environmental conditions, making the entire process more intelligent.

[0032] Specifically, during air circulation, the battery control system acquires the air temperature and humidity parameters in real time through temperature and humidity sensors within the channel, and adjusts the air intake of the air valve accordingly. The specific adjustment logic is as follows: when the relative humidity within the channel is higher than the set value (e.g., 60%RH, which can be adjusted based on the specific product and operating environment), the air valve opening is increased (e.g., adjusted to 80%-100%) to increase air intake and improve dehumidification efficiency. When the relative humidity within the channel is lower than the set value (e.g., 40%RH, which can also be adjusted based on the specific product and operating environment), the air valve opening is decreased (e.g., adjusted to 20%-45%) to reduce air intake and lower energy consumption. The air valve adjustment response time is no more than 1 second to achieve precise control of the air intake. The battery management system controls the fan operation time of the circulation component, which is determined based on the humidity level inside the enclosure, typically 10-30 minutes. During fan operation, the air intake of the air valve is adjusted in real time according to the aforementioned air valve adjustment logic to ensure that the water-absorbing medium can fully adsorb moisture from the air.

[0033] The condition for determining that the adsorption component is saturated with water in step S3 is: if the internal environment of the box is still determined to have reached the condensation condition after continuously executing step S2 for a first preset time, then the adsorption component 3 is considered to have reached the state of water saturation.

[0034] The condition for determining the completion of dehydration and regeneration of the adsorption component in step S4 is as follows: During the dehydration and regeneration process, the temperature and humidity values ​​at the air inlet and outlet of the circulation component are monitored in real time. When the absolute value of the temperature difference between the air outlet and the air inlet is less than the third threshold and the absolute value of the humidity difference is less than the fourth threshold (e.g., the temperature difference is less than 2°C and the humidity difference is less than 5%RH), the dehydration and regeneration is determined to be complete. After the dehydration and regeneration of the adsorption component is completed, the battery management system controls the heating element to stop heating, and the circulation fan continues to run for a second preset time to reduce the temperature inside the water absorption box to the same level as the ambient temperature. When the temperature and humidity at the air inlet and outlet tend to be consistent, it indicates that the water absorption medium no longer absorbs a large amount of heat for water desorption (temperature equilibrium), and there is no large amount of water inside it that can be desorbed (humidity equilibrium), thus proving that its water absorption capacity has been restored.

[0035] Specifically, when the water absorption component is dehydrating, the battery management system controls the heating element inside the battery box to heat up the air temperature inside the box. The heating temperature of the heating element is set to 50-60℃ (e.g., 55℃). The temperature inside the channel is monitored in real time by a temperature sensor. When the temperature inside the channel reaches the set value, the heating element is controlled to maintain a constant temperature. When the circulating fan of the circulation component starts, hot air enters the adsorption box of the adsorption component and comes into full contact with the water-absorbing medium, causing the temperature of the water-absorbing medium to rise and dehydrate. During the dehydration process, the temperature of the hot air is maintained at 50-60℃, and the relative humidity gradually increases. The water (water vapor) desorbed from the water-absorbing medium is discharged to the outside of the box through the drain outlet. When the water-absorbing medium is dehydrated until it regains its water-absorbing capacity, the battery management system controls the heating element to stop heating, while the circulating fan can continue to run for 5-10 minutes to allow the temperature inside the water-absorbing box to drop to room temperature before stopping.

[0036] Furthermore, by adding more types of sensors, such as ambient light sensors and vibration sensors, comprehensive monitoring of the battery's surrounding environment can be achieved. Ambient light sensors can detect the intensity of external light, thus determining whether the battery is in an environment where it may be exposed to direct sunlight or other conditions that could cause a rapid increase in temperature. Vibration sensors can monitor the battery's vibration during use; for example, when the battery is used in an electric vehicle, the impact of road bumps on the battery can be monitored in real time during the vehicle's operation. Based on the comprehensive data collected by these sensors, the battery control system automatically determines the current environmental mode, predicts the risk of condensation, and quickly switches to the appropriate control strategy. It can also formulate personalized control strategies for different battery types, application areas, and user needs. For electric vehicle batteries, considering the dynamic changes during vehicle use, the priority and intensity of dehumidification and temperature control are adjusted under different operating conditions. For example, during acceleration, the battery power output is high, and heat generation increases, so the risk of condensation is low, and heat dissipation control is prioritized. Conversely, during high-humidity rainy weather, the dehumidification function is activated to ensure a stable internal environment for the battery.

[0037] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0038] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] Although the invention has been described in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the scope of the appended claims.

Claims

1. A battery resistant to condensation, characterized in that, include: Box (1); A battery module (2) is disposed inside the housing (1), and a surrounding channel (11) is formed between the battery module (2) and the inner wall of the housing (1). An adsorption component (3) is disposed in the channel (11) for adsorbing moisture flowing through the air; A circulation component (7) is disposed in the channel (11) and adjacent to the adsorption component (3) for driving the air inside the box (1) to circulate in the channel (11); Several heating elements (5) are disposed inside the box (1) for heating the air inside the box (1); Several temperature and humidity sensors (4) are distributed on the inner wall of the box (1), the outer wall of the battery module (2) and the channel (11) to collect environmental parameters inside the box (1); The battery management system (6) is electrically connected to the temperature and humidity sensor (4), the heating element (5) and the circulation component (7), and is configured to: determine whether the condensation condition is reached based on the environmental parameters; when the condensation condition is reached, start the circulation component (7) to dehumidify; after the water absorption capacity of the adsorption component (3) is saturated, control the heating element (5) and the circulation component (7) to work together to heat, dehydrate and regenerate the adsorption component (3) and discharge the water outside the box (1).

2. The anti-condensation battery according to claim 1, characterized in that, The adsorption component (3) includes a water absorption box (31) connected to the box (1) and a solid water absorption medium filled in the water absorption box (31); the outer wall of the box (1) is provided with a drain outlet (32) communicating with the water absorption box (31), and the drain outlet (32) is provided with a check valve (33).

3. The anti-condensation battery according to claim 2, characterized in that, The circulation component (7) includes a circulation fan (71) and a damper (72). The damper (72) is an electric regulating valve connected between the air inlet of the circulation fan (71) and the water absorption box (31). The battery management system (6) is configured to adjust the opening of the damper (72) in real time according to the humidity data collected by the temperature and humidity sensor (4).

4. The anti-condensation battery according to claim 1, characterized in that, The adsorption component (3) and the circulation component (7) are both two in number and are symmetrically arranged on opposite sides inside the box (1) so that air can form a circulation in the channel (11).

5. A method for preventing condensation control, characterized in that, The battery used in any one of claims 1-4 for preventing condensation includes the following steps: S1: The environmental parameters inside the box (1) are obtained by the temperature and humidity sensor (4), and the battery management system (6) calculates the dew point temperature based on the environmental parameters and determines whether the condensation conditions are met. S2: If the condensation condition is met, the battery management system (6) will start the circulation component (7) to make the air inside the box (1) circulate in the channel (11) and flow through the adsorption component (3) to reduce the water content of the air inside the battery. S3: After the adsorption component (3) is saturated with water, the battery management system (6) activates the heating element (5) and controls the circulation component (7) to introduce hot air into the adsorption component (3) to dehydrate and regenerate it; S4: During the dehydration and regeneration process, the water vapor desorbed from the adsorption component (3) is discharged to the outside of the box (1).

6. The method for preventing condensation control according to claim 5, characterized in that, In step S1, the environmental parameters inside the housing (1) are obtained by the temperature and humidity sensor (4), and the battery management system (6) calculates the dew point temperature based on the environmental parameters and determines whether the condensation conditions have been met, including the following steps: The environmental parameters inside the box (1) are obtained by the temperature and humidity sensor (4); The battery management system (6) calculates the dew point temperature (Td) based on the environmental parameters. The battery management system (6) compares the calculated dew point temperature (Td) with the minimum value of the inner wall temperature (TW) of the box and the outer wall temperature (TB) of the battery module directly measured by the temperature and humidity sensor (4); If Td > min(TW, TB) + ΔT, then the condensation condition is considered to have been met. Where ΔT is the safety margin temperature, and its value ranges from 0.5℃ to 2℃.

7. The method for preventing condensation control according to claim 5, characterized in that, The battery management system (6) controls the air intake by adjusting the opening of the air valve (72) of the circulation component (7). The adjustment logic is as follows: When the relative humidity detected in the channel (11) is higher than the first threshold, the opening of the air valve (72) is increased to the first opening range; When the relative humidity detected in the channel (11) is lower than the second threshold, the opening of the air valve (72) is reduced to the second opening range; Wherein, the first threshold is greater than the second threshold, and the first opening range is greater than the second opening range.

8. The method for preventing condensation control according to claim 5, characterized in that, The condition for determining that the adsorption component (3) is saturated with water in step S3 is: if the internal environment of the box is still determined to reach the condensation condition after continuously executing step S2 for a first preset time, then the adsorption component (3) is considered to have reached the state of water saturation.

9. The method for preventing condensation control according to claim 5, characterized in that, The condition for determining that the dehydration and regeneration of the adsorption component (3) is complete in step S4 is as follows: During the dehydration and regeneration process, the temperature and humidity values ​​of the air inlet and outlet of the circulation component (7) are monitored in real time; When the absolute value of the temperature difference between the air outlet and the air inlet is less than the third threshold, and the absolute value of the humidity difference is less than the fourth threshold, the dehydration and regeneration is considered complete. After the adsorption component (3) has been dehydrated and regenerated, the battery management system (6) controls the heating element (5) to stop heating.

10. The method for preventing condensation control according to claim 9, characterized in that, After the dehydration and regeneration are completed, the circulating fan (71) continues to run for a second preset time to reduce the temperature inside the adsorption component (3) to the same level as the ambient temperature.

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