Anti-condensation operation control method of liquid-cooled energy storage system

Abstract

The present application relates to the technical field of energy storage thermal management and condensation control, and discloses a condensation prevention operation control method for a liquid-cooled energy storage system. The liquid-cooled energy storage system comprises at least two energy storage cabinets, each of which comprises a battery cabin, a liquid cooling loop, a temperature and humidity sensor, an air charging valve, an air exhaust valve and a desiccant bin. By collecting the real-time humidity value of the monitoring air in the energy storage cabinet and combining the cumulative high-humidity load, low-humidity non-dehumidification, desiccant replacement warning and active dehumidification control are respectively executed. When multiple energy storage cabinets reach the active dehumidification condition within the grouping window, a one-to-many closed dehumidification loop is started. When multiple energy storage cabinets that meet the conditions are not formed, a one-to-one closed dehumidification loop is started. When the humidity continuously falls below the threshold value and reaches the preset holding time, the dehumidification is stopped. The method can effectively reduce the condensation risk of the liquid-cooled energy storage cabinet, improve the accuracy of desiccant maintenance, and improve the utilization efficiency of the external dehumidifier.

Description

Technical Field

[0001] This invention relates to the field of energy storage thermal management and anti-condensation control technology, specifically, to an anti-condensation operation control method for a liquid-cooled energy storage system. Background Technology

[0002] As liquid-cooled energy storage systems develop towards higher energy density and higher integration, the storage cabinet typically integrates battery packs, liquid-cooled piping, liquid-cooled units, control modules, and various electrical connectors. While liquid cooling effectively removes heat generated during battery operation, it can also create localized low-temperature areas in the liquid-cooled water inlet piping, near the liquid-cooled unit, and in other areas related to refrigerant heat exchange. When humid air from outside enters the cabinet through gaps in the cabinet assembly, maintenance door openings, aging seals, or long-term infiltration, the humidity inside the cabinet increases, and condensation easily occurs first in these localized low-temperature areas. Once condensation forms, it not only affects the reliability of electrical connectors, sampling components, and insulation structures, but may also further lead to corrosion, insulation degradation, and malfunctions in operational protection systems. Therefore, how to stably and efficiently control the humidity inside the cabinet in liquid-cooled energy storage systems has become a problem that must be solved for the long-term operation of energy storage equipment.

[0003] Chinese invention patent CN111271944A discloses a battery box device with condensation detection and drying functions. This document discloses a technical solution that incorporates a temperature and humidity sensor, a data transmission and processing unit, a drying device, and an alarm unit inside the battery box. It detects and alerts users to the risk of condensation inside the box by setting thresholds, focusing on addressing the issues of temperature and humidity monitoring, condensation warning, and rapid replacement of the drying device within a single battery box.

[0004] Chinese invention patent CN110165317A discloses an external dehumidification system for electric vehicle battery packs and its control method. By setting up an external dehumidification system assembly and connecting the battery pack to the assembly via a detachable structure, dehumidification is initiated when the humidity reaches a set maximum value and stopped when the humidity falls below a set minimum value. This emphasizes the concepts of external dehumidification, detachable connection, and humidity upper and lower limit control. This solution demonstrates good applicability to external dehumidification of a single battery pack and illustrates the effectiveness of external dry air circulation in dehumidification. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an anti-condensation operation control method for liquid-cooled energy storage systems. This method can reduce the risk of condensation inside the cabinet and improve dehumidification and maintenance efficiency in multiple energy storage cabinet scenarios by using humidity monitoring, cumulative high humidity load judgment, and closed-loop dehumidification mode selection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for preventing condensation during operation of a liquid-cooled energy storage system, wherein the liquid-cooled energy storage system includes at least two independent energy storage cabinets, each energy storage cabinet including a battery compartment, a liquid cooling circuit, a temperature and humidity sensor, an inflation valve connected to an external dehumidifier, an exhaust valve connected to the external dehumidifier, and a desiccant compartment connected to the battery compartment. Multiple energy storage cabinets can form a one-to-one closed dehumidification circuit or a one-to-many series closed dehumidification circuit with an external dehumidifier. The method includes the following steps:

[0008] S1. Collect the real-time humidity value of the air inside the energy storage cabinet. Determine the cumulative high humidity load parameters of the energy storage cabinet. Replace parameters with desiccant ;

[0009] The cumulative high humidity load parameter is determined according to the following formula. Replace parameters with desiccant :

[0010]

[0011]

[0012] in, The number of samples within the statistical period. For the energy storage cabinet in the first The humidity value at the time of the next sampling. The baseline value for high humidity warnings can be set at 75. The humidity threshold for active dehumidification can be set to 95. This is the sampling time interval, in minutes; For the first Desiccant consumption coefficient at the humidity level at the time of sampling. No. Standard number of days of desiccant use at the humidity level at the time of sampling.

[0013] S2. Based on the real-time humidity value obtained in step S1, the high humidity load parameters and desiccant replacement parameters are accumulated to control each energy storage cabinet.

[0014] When the energy storage cabinet meets When the humidity is low, dehumidification is not performed.

[0015] When the energy storage cabinet meets When necessary, send a desiccant replacement warning signal;

[0016] When the energy storage cabinet meets or When an alarm occurs, the alarm time of the energy storage cabinet is recorded, a condensation risk alarm is issued, and the system is controlled to stop operation or execute a dehumidification protection strategy.

[0017] in, The low humidity threshold for normal operation can be set to 50. The cumulative high humidity load threshold can be set to 10; The threshold for replacing the desiccant can be set to 9.

[0018] S3. When multiple energy storage cabinets are connected to dehumidification pipelines, and the alarm occurrence time of multiple energy storage cabinets reaching the active dehumidification condition meets the following requirements.

[0019]

[0020] in, The alarm time for the i-th energy storage cabinet; The interval window duration for dehumidification alarm;

[0021] when or When an alarm occurs, the alarm time of the energy storage cabinet is recorded, a condensation risk alarm is issued, and the system is controlled to stop operation or execute a dehumidification protection strategy.

[0022] Dehumidification alarm interval window duration If two or more energy storage cabinets meet the conditions for active dehumidification, that is... The dehumidification system initiates a one-to-many series closed-loop dehumidification process for the multiple energy storage cabinets connected to the dehumidification pipeline.

[0023] Dehumidification alarm interval window duration If no more than two energy storage cabinets meet the active dehumidification conditions, dehumidification is only performed on the single energy storage cabinet that meets the active dehumidification conditions.

[0024] S4. When the target energy storage cabinet in the one-to-one closed dehumidification loop continuously meets the requirements... And achieve the preset duration When the external dehumidifier stops dehumidifying the target energy storage cabinet and the corresponding closed dehumidification loop is released; when all energy storage cabinets in a one-to-many series closed dehumidification loop continuously meet the requirements... And achieve the preset duration When this occurs, stop the external dehumidifier and disconnect the corresponding closed dehumidification circuit; among which, The duration for which dehumidification is to be deactivated.

[0025] Preferably, the humidity value in step S1 The temperature and humidity data are collected by temperature and humidity sensors located in the corresponding energy storage cabinets and then read by the BMS main controller or control module to participate in the operation logic of steps S1 to S4.

[0026] Preferably, in step S2, the normal operating humidity threshold is... The high humidity warning baseline value is 50%RH. The active dehumidification humidity threshold is 70%RH. It is 95%RH.

[0027] Preferably, the cumulative high humidity load threshold The humidity level is determined by the effective dehumidification space volume inside the energy storage cabinet and the humidity level exceeding the high humidity warning threshold. Under standard space volume conditions, the cumulative humidity level exceeding the high humidity warning threshold is used to determine the risk of condensation inside the energy storage cabinet.

[0028] Preferably, the desiccant replacement threshold The parameters were determined by the desiccant capacity, the effective dehumidification space volume inside the energy storage cabinet, and the desiccant replacement cycle under different humidity levels. Using the standard desiccant capacity and space volume, experiments were conducted at different humidity levels to obtain the standard desiccant usage days, which were then converted into a desiccant consumption coefficient for calculating desiccant replacement parameters.

[0029] As a preferred option, when the energy storage cabinet meets the requirements When the protection strategy is implemented, it includes at least one of the following methods: stopping the operation of the energy storage system, limiting the charging and discharging power, cutting off high-risk circuits, or outputting audible and visual alarm signals.

[0030] Preferably, the dehumidification alarm interval window duration The duration ranges from 10 to 60 minutes.

[0031] Preferably, after the desiccant is replaced, the desiccant replacement parameters are... Recalculate.

[0032] Preferably, after the energy storage cabinet is dehumidified, the cumulative high humidity load parameter is... Recalculate.

[0033] This invention constructs a one-to-one closed dehumidification loop and a one-to-many series closed dehumidification loop by installing temperature and humidity sensors and a desiccant compartment connected to the battery compartment inside the energy storage cabinet, and combining them with an external dehumidifier, an inflation valve, an exhaust valve, and piping. Simultaneously, it uses real-time humidity values ​​and cumulative high humidity load parameters... Replace parameters with desiccant As a basis for joint control, a tiered operation mechanism is established, which includes low humidity without dehumidification, desiccant replacement early warning, and active dehumidification with protection. When multiple energy storage cabinets enter active dehumidification mode at approximately the same time, the dehumidification alarm interval window is utilized. The selection of single-cabinet dehumidification and multi-cabinet series dehumidification can more accurately reflect the accumulation of condensation risk and the consumption status of desiccant, improve the accuracy of desiccant replacement timing, reduce the condensation risk of liquid-cooled energy storage cabinets, improve the utilization efficiency of a single external dehumidifier in multi-cabinet scenarios, and improve the stability and maintenance economy of the system operation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a dehumidifier in one-to-one mode.

[0035] Figure 2 This is a schematic diagram of a dehumidifier operating in a one-to-many mode.

[0036] Figure 3 This is one of the structural schematic diagrams of an energy storage cabinet.

[0037] Figure 4 This is the second structural schematic diagram of the energy storage cabinet.

[0038] Figure 5 This is the third structural schematic diagram of the energy storage cabinet.

[0039] Figure 6 This is a schematic diagram of the desiccant compartment structure of the energy storage cabinet.

[0040] Attached reference numerals: 100-Energy storage cabinet, 110-Control compartment, 120-Liquid cooling compartment, 121-Liquid cooling unit, 122-Liquid cooling inlet pipe, 123-Liquid cooling outlet pipe, 130-Battery compartment, 131-Battery pack, 140-Temperature and humidity sensor, 150-Desiccant compartment, 151-Desiccant, 160-Inflation valve, 170-Exhaust valve, 200-Dehumidifier, 201-Pipeline, 300-BMS main control. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0042] like Figures 3 to 5As shown, the energy storage cabinet 100 in this embodiment is internally divided into a control compartment 110, a battery compartment 130, and a liquid cooling compartment 120. This compartmentalized structure allows control components, battery packs 131, and liquid cooling-related components to be arranged in different areas. This facilitates functional isolation between the liquid cooling area and the battery area, and also helps reduce the impact of low-temperature components in the liquid cooling compartment 120 on other parts, thereby reducing the risk of condensation caused by thermal coupling. The control compartment 110 is preferably located in the upper part of the energy storage cabinet 100, the liquid cooling compartment 120 is preferably located in the lower part of the energy storage cabinet 100, and the battery compartment 130 is located between the two. This arrangement of the battery packs 131 in vertical layers facilitates modular installation and the vertical distribution of liquid cooling pipes and dehumidification airflow.

[0043] The control compartment 110 houses the BMS main controller 300, along with its associated control, communication, and alarm modules. The BMS main controller 300 receives humidity signals collected by the temperature and humidity sensor 140 and performs control functions such as low humidity maintenance, desiccant replacement warning, active dehumidification, and dehumidification shutdown. The temperature and humidity sensor 140 is located within the energy storage cabinet 100, preferably in an area that accurately reflects changes in humidity within the cabinet, such as the transition area between the control compartment 110 and the battery compartment 130, or within the battery compartment 130 near the main airflow exchange path. This arrangement avoids measurement distortion caused by localized low temperatures within the liquid-cooled compartment 120 and allows for faster reflection of the overall humidity level within the cabinet.

[0044] Multiple battery packs 131 are vertically spaced within the battery compartment 130. A liquid cooling unit 121 is installed within the liquid cooling compartment 120. The liquid cooling unit 121 is connected to the multiple battery packs 131 via liquid cooling inlet pipes 122 and liquid cooling outlet pipes 123, thereby providing liquid cooling heat exchange to the battery packs 131. A battery compartment sealing cover is provided at the front of the battery compartment 130 to seal the battery compartment 130 after assembly, reducing the direct entry of hot and humid outside air. The inner wall of the battery compartment 130 is preferably lined with insulating and flame-retardant insulation cotton to reduce the local heat exchange rate between the compartment wall and the air inside the compartment, mitigating condensation caused by temperature differences on the wall surface and localized cold spots. The energy storage cabinet 100 is also equipped with an air inlet valve 160 and an exhaust valve 170 connected to the external dehumidifier 200. The air inlet valve 160 is used to introduce the dry air processed by the external dehumidifier 200 into the cabinet, and the exhaust valve 170 is used to guide the return air in the cabinet back to the external dehumidifier 200, thereby forming a closed-loop air circuit.

[0045] A desiccant compartment 150 is installed inside the energy storage cabinet 100. The desiccant compartment 150 is preferably located inside the liquid cooling chamber 120 and is in gas communication with the battery compartment 130, so that when the dehumidifier 200 is not operating or the energy storage cabinet 100 is in a static state, the desiccant 151 can continuously adsorb residual moisture inside the cabinet. Figure 6 It can be seen that the desiccant compartment 150 can be further divided into several sub-compartments, which facilitates the grouping and batch replacement of the desiccant 151, thereby improving maintenance convenience and reducing one-time replacement costs.

[0046] The external dehumidifier 200 is detachably connected to the energy storage cabinet 100 via pipe 201. Specifically, the air outlet of the dehumidifier 200 is connected to the air inlet valve 160 via pipe 201, and the air inlet of the dehumidifier 200 is connected to the exhaust valve 170 via pipe 201, thereby forming a closed dehumidification loop between the external dehumidifier 200 and the energy storage cabinet 100. Figure 1 This illustrates a one-to-one closed-loop dehumidification mode where an external dehumidifier 200 is connected to a single energy storage cabinet 100. Figure 2 This illustrates a one-to-many series closed-loop dehumidification mode where an external dehumidifier 200 is connected to multiple energy storage cabinets 100. In one-to-one mode, the external dehumidifier 200 serves only a single energy storage cabinet 100 that meets the active dehumidification conditions. In one-to-many mode, the external dehumidifier 200 is connected in series with multiple energy storage cabinets 100 via pipes 201, allowing the treated dry air to flow through the multiple energy storage cabinets along a predetermined connection path before returning to the external dehumidifier 200. Switching between energy storage cabinets 100 in the one-to-many mode can be achieved by adjusting the connection relationship with the switching pipes 201.

[0047] The operation control method of the present invention can be implemented according to steps S1 to S4. First, in step S1, the BMS main controller 300 periodically reads the real-time humidity value of the monitored air inside the energy storage cabinet. In this embodiment, it is preferable to use a fixed time interval. A sampling is conducted, and the cumulative high humidity load parameters of the energy storage cabinet are determined within a preset statistical period. Replace parameters with desiccant The cumulative high humidity load parameter Used to characterize the energy storage cabinet 100's resistance to values ​​exceeding the warning baseline over a period of time. The degree of humidity accumulation reflects the cumulative trend of the energy storage cabinet 100 entering the condensation risk zone; the desiccant replacement parameters This is used to characterize the consumption level of desiccant 151 under different humidity conditions, thereby reflecting the remaining usable capacity of desiccant 151. The preferred calculation formula is:

[0048]

[0049]

[0050]

[0051] in, The number of samples taken within the statistical period; For the energy storage cabinet in the first Humidity value at the time of the next sampling; This serves as the baseline value for high humidity warnings. The humidity threshold for active dehumidification; This is the sampling time interval, in minutes; For the first Desiccant consumption coefficient at the humidity level at the time of sampling; No. The standard number of days of desiccant use at the humidity level at the time of sampling. Through the above settings, the cumulative high humidity load parameters are calculated. It no longer relies solely on instantaneous humidity values, but comprehensively considers values ​​exceeding the high humidity warning baseline. The degree and duration of humidity exceeding limits can more accurately reflect the accumulation of condensation risk; desiccant replacement parameters By combining the consumption rate of desiccant 151 under different humidity conditions, it is easier to determine the replacement time of desiccant 151 more rationally. Preferably, the humidity sampling time interval is 10 minutes, i.e. =10 minutes.

[0052] In step S2, the BMS main controller 300 calculates the real-time humidity value. Cumulative high humidity load parameters Replace parameters with desiccant Each energy storage cabinet 100 is controlled. When the energy storage cabinet 100 meets the requirements... When the humidity is low, dehumidification is not performed, and the external dehumidifier 200 remains stopped; when the energy storage cabinet 100 meets the requirements... When the desiccant is replaced, a desiccant replacement warning signal is sent, prompting maintenance personnel to check and replace the desiccant 151 in the desiccant compartment 150; when the energy storage cabinet 100 meets the requirements... or The alarm time of the energy storage cabinet 100 is recorded, a condensation risk alarm is issued, and the system is controlled to stop operation or execute a dehumidification protection strategy. The dehumidification protection strategy may include stopping the energy storage system, limiting charging and discharging power, cutting off high-risk circuits, or outputting audible and visual alarm signals. Preferably, a low humidity threshold is used during normal operation. Take 50%RH as the baseline value for high humidity warning. Take 70% RH as the active dehumidification humidity threshold. Use 95% RH. By setting the above parameters, a tiered operation mechanism can be established: "low humidity without dehumidification—desiccant replacement warning—active dehumidification and protection." Used to define low-humidity safety zones. Used to define the starting area for high humidity accumulation. Used to define the active dehumidification trigger zone Used to define the cumulative threshold for condensation risk. Used to define the desiccant replacement threshold.

[0053] In step S3, the system needs to choose between one-to-one closed-loop dehumidification and one-to-many series closed-loop dehumidification. The alarm occurrence time of multiple energy storage cabinets 100 that have reached the active dehumidification condition satisfies the following formula:

[0054]

[0055] in, The alarm time for the i-th energy storage cabinet; This refers to the duration of the dehumidification alarm interval window. If the duration of the dehumidification alarm interval window is specified... If two or more energy storage cabinets are present, the active dehumidification condition can be met, thus satisfying the requirement. The system then adjusts the connection relationship of the pipes 201 to activate a one-to-many series closed dehumidification loop for the multiple connected energy storage cabinets 100, thereby improving the utilization efficiency of a single external dehumidifier 200; if the dehumidification alarm interval window duration is... If no more than two energy storage cabinets 100 meet the active dehumidification conditions, then only the single energy storage cabinet 100 that meets the active dehumidification conditions will be dehumidified in a one-to-one closed loop. Furthermore, the energy storage cabinets 100 that meet the active dehumidification conditions can be added to a waiting queue Q according to the order of alarm occurrence. After the current one-to-one closed dehumidification loop or one-to-many series closed dehumidification loop ends, the remaining energy storage cabinets 100 in the waiting queue Q will be re-executed with the dehumidification mode selection described in step S3. In this way, in scenarios where multiple energy storage cabinets 100 share the same external dehumidifier 200, both centralized dehumidification efficiency and single-cabinet priority response capability can be balanced. Preferably, =30 minutes.

[0056] In step S4, the system exits dehumidification based on humidity recovery. This continues until the target energy storage cabinet 100 in the one-to-one closed dehumidification loop continuously meets the humidity requirements. And achieve the preset duration When the external dehumidifier 200 stops dehumidifying the target energy storage cabinet 100 and the corresponding closed dehumidification circuit is released; when each energy storage cabinet 100 in a one-to-many series closed dehumidification circuit continuously meets the requirements... And achieve the preset duration When the time is right, stop the external dehumidifier 200 and disconnect the corresponding closed dehumidification circuit. Set the preset hold time. The purpose is to prevent frequent start-stop cycles of the external dehumidifier 200 when the humidity inside the cabinet fluctuates near a threshold for a short period, thereby improving system stability and control reliability. In actual implementation, The settings can be configured based on the cabinet volume, dehumidifier capacity, and humidity fluctuation characteristics. Preferably, =30 minutes.

[0057] As a further preferred option, after replacing desiccant 151, the desiccant replacement parameters are as follows: Recalculate to reflect the initial state of the newly replaced desiccant 151; after dehumidification in the energy storage cabinet 100, accumulate high humidity load parameters. The calculation is recalculated to re-record the subsequent moisture accumulation process. This setting avoids distortion of subsequent judgments caused by the long-term accumulation of historical data, thereby improving the accuracy and practicality of the control logic. Examples and comparative cases are provided.

[0058] The foregoing description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A method for preventing condensation during operation control of a liquid-cooled energy storage system, characterized in that, The liquid-cooled energy storage system includes at least two independent energy storage cabinets. Each energy storage cabinet includes a battery compartment, a liquid-cooled circuit, a temperature and humidity sensor, an inflation valve connected to an external dehumidifier, an exhaust valve connected to the external dehumidifier, and a desiccant compartment connected to the battery compartment. Multiple energy storage cabinets can form a one-to-one closed dehumidification circuit or a one-to-many series closed dehumidification circuit with an external dehumidifier. The method includes the following steps: S1. Collect the real-time humidity value of the air inside the energy storage cabinet. Determine the cumulative high humidity load parameters of the energy storage cabinet. Replace parameters with desiccant The cumulative high humidity load parameter is determined according to the following formula. Replace parameters with desiccant : ； ； ； in, The number of samples within the statistical period. For the energy storage cabinet in the first The humidity value at the time of the next sampling. This is the baseline value for high humidity warnings. The humidity threshold for active dehumidification. The sampling time interval, For the first Desiccant consumption coefficient at the humidity level at the time of sampling. No. Standard number of days of desiccant use at the humidity level at the time of sampling; S2. Based on the real-time humidity value obtained in step S1, the high humidity load parameters and desiccant replacement parameters are accumulated to control each energy storage cabinet. When the energy storage cabinet meets When the humidity is low, dehumidification is not performed. When the energy storage cabinet meets When necessary, send a desiccant replacement warning signal; When the energy storage cabinet meets or When an alarm occurs, the alarm time of the energy storage cabinet is recorded, a condensation risk alarm is issued, and the system is controlled to stop operation or execute a dehumidification protection strategy. in, The low humidity threshold is for normal operation. The cumulative high humidity load threshold, Replace the desiccant threshold; S3. When multiple energy storage cabinets are connected to dehumidification pipelines, and the alarm occurrence time of multiple energy storage cabinets reaching the active dehumidification condition meets the following requirements. in, The alarm time for the i-th energy storage cabinet; The interval window duration for dehumidification alarm; when or When an alarm occurs, the alarm time of the energy storage cabinet is recorded, a condensation risk alarm is issued, and the system is controlled to stop operation or execute a dehumidification protection strategy. Dehumidification alarm interval window duration If two or more energy storage cabinets meet the conditions for active dehumidification, that is... The dehumidification system initiates a one-to-many series closed-loop dehumidification process for the multiple energy storage cabinets connected to the dehumidification pipeline. Dehumidification alarm interval window duration If no more than two energy storage cabinets meet the conditions for active dehumidification, dehumidification will only be performed on the single energy storage cabinet that meets the conditions for active dehumidification. S4. When the target energy storage cabinet in the one-to-one closed dehumidification loop continuously meets the requirements... And achieve the preset duration When the external dehumidifier stops dehumidifying the target energy storage cabinet and the corresponding closed dehumidification loop is released; when all energy storage cabinets in a one-to-many series closed dehumidification loop continuously meet the requirements... And achieve the preset duration When this occurs, stop the external dehumidifier and disconnect the corresponding closed dehumidification circuit; among which, The duration for which dehumidification is to be deactivated.

2. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, Humidity value in step S1 The temperature and humidity data are collected by temperature and humidity sensors located in the corresponding energy storage cabinets and then read by the BMS main controller or control module to participate in the operation logic of steps S1 to S4.

3. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, In step S2, the normal operating humidity threshold The high humidity warning baseline value is 50%RH. The active dehumidification humidity threshold is 70%RH. It is 95%RH.

4. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, The cumulative high humidity load threshold It is determined by the effective dehumidification space volume inside the energy storage cabinet and the humidity exceeding the high humidity warning benchmark value.

5. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, The desiccant replacement threshold The desiccant capacity, the effective dehumidification space volume inside the energy storage cabinet, and the desiccant replacement cycle under different humidity levels were calibrated together.

6. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, When the energy storage cabinet meets When the protection strategy is implemented, it includes at least one of the following methods: stopping the operation of the energy storage system, limiting the charging and discharging power, cutting off high-risk circuits, or outputting audible and visual alarm signals.

7. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, The duration of the dehumidification alarm interval window The duration ranges from 10 to 60 minutes.

8. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, After the desiccant is replaced, the desiccant replacement parameters are as follows: Recalculate.

9. The anti-condensation operation control method for a liquid-cooled energy storage system according to claim 1, characterized in that, After the energy storage cabinet is dehumidified, the cumulative high humidity load parameter is... Recalculate.

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