An automated detection system based on power operation and maintenance dispatching

Abstract

The present invention relates to an automatic detection system based on electric power operation and maintenance scheduling applied in the field of electric energy. By pre-setting three levels of mild high temperature, severe high temperature and dangerous state for battery modules, during the monitoring of the battery modules, different processing methods such as corresponding cooling, switching of backup power supply, and circuit cutting are performed according to the temperature level triggered by the battery modules to reduce safety hazards. When the temperature reaches severe high temperature, the voltage, current and continuous charge and discharge time of the battery modules are recorded. On the one hand, before the severe high temperature is reached next time, the corresponding processing operation is performed in advance to improve the operating safety of the battery modules. On the other hand, the voltage, current and continuous charge and discharge time of each battery module when it reaches severe high temperature are compared, so as to classify the battery modules into good and bad ones, and reduce the temperature trigger value of low-quality batteries at the severe high temperature level, so as to further improve the operating safety of low-quality batteries.

Description

Technical Field

[0001] The present invention relates to a detection system, and in particular to an automatic detection system based on power operation and maintenance scheduling and applied in the field of electric energy. Background Art

[0002] Power system operation and maintenance dispatch is a very important part of power system operation, which mainly includes power operation and power maintenance. It includes power supply, substation, distribution, transmission and other units. Among them, power supply is the most basic part of the power operation and maintenance system. It is the basic power source for the normal operation of all equipment. Therefore, the safety and stability of energy storage units in the power system are of great importance.

[0003] The specification of Chinese patent CN202010710987.1 discloses a temperature control device based on the temperature difference of energy storage batteries. The key points of its technical solution are that it includes a central processing device, a temperature regulating device, a battery status monitoring device, an environmental detection device and multiple groups of energy storage batteries; the central processing device includes a control device and a calculation device, the control device is connected to an electric control valve set on each regulating tube and controls the opening size of the electric control valve, and the calculation device is used to calculate the power of the temperature regulating device according to the ambient temperature and the working voltage and working current of the energy storage battery. The effect of facilitating temperature regulation of the energy storage system according to the environment is achieved.

[0004] As the basis of power operation and maintenance, the safety, reliability and stability of battery modules are of vital importance. However, due to the continuous heating of batteries during use, and the fact that each battery module is prone to heat release to varying degrees due to quality problems during the charging and discharging process, there are major safety hazards. Therefore, safety testing of battery modules is particularly important. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that due to the continuous heating of the battery during use, coupled with the fact that each battery module is prone to heat release to varying degrees due to quality problems during the charging and discharging process, there are great safety hazards in the operation of the battery.

[0006] To solve the above problems, the present invention provides an automated detection system based on power operation and maintenance scheduling, including a temperature monitoring module, a voltage monitoring module, a current monitoring module, a degradation module and a quality classification module for monitoring multiple battery modules, wherein the temperature monitoring module is connected to a graded alarm module and a temperature grade database, the graded alarm module is connected to a cooling module, the voltage monitoring module is connected to a voltage database, the current monitoring module is connected to a current database and a timing module, and the timing module is connected to a charge and discharge duration library;

[0007] The battery module includes a battery box, which is connected to a circulating cooling pipeline, the circulating cooling pipeline includes a cooling box, the inner wall of the cooling box is fixedly connected to a water collecting box, one side end of the cooling box is fixedly connected to a refrigerator, the cold end of the refrigerator is fixedly connected through the cooling box and the water collecting box and extends to the interior of the water collecting box, the end of the water collecting box away from the cooling box is fixedly connected to a plurality of coils communicated therewith, the end of the coil away from the water collecting box is fixedly connected to the inner wall of the cooling box, the coil and the water collecting box are both filled with cooling water, the outer end of the cooling box is fixedly connected to the outlet end of the air pump and a return pipe, the end of the return pipe away from the cooling box and the air inlet end of the air pump are both fixedly connected to the interior of the battery box, the return pipe is fixedly connected to an electrically controlled valve, and the air pump, the refrigerator and the electrically controlled valve are all electrically connected to the cooling module.

[0008] An automatic detection system based on power operation and maintenance scheduling, the use method of which includes the following steps:

[0009] S1. Monitor the operating temperature, voltage and current of all battery modules through the temperature monitoring module, voltage monitoring module and current monitoring module;

[0010] S2. When the temperature of a battery module is detected to rise to T1 and reaches a slightly high temperature level, the cooling module is started to cool the battery module for a fixed period of time;

[0011] S3. When the temperature of a battery module (referred to as battery module A) is detected to rise to T2 (T2 is greater than T1) and reaches a severe high temperature level, the backup power supply is used to replace battery module A for charging and discharging, and a high temperature warning is sent to the power operation and maintenance dispatching center, and a fixed-time cooling process is performed on battery module A;

[0012] When the cooling process is over and the temperature data of battery module A is lower than T2 and remains stable for a certain period of time, the backup power supply is disabled and the charging and discharging process is switched to battery module A to continue;

[0013] S4. When the temperature of a battery module (referred to as battery module B) is detected to rise to T3 (T3 is greater than T2) and reaches a dangerous level, all circuits connected to battery module B are cut off and a danger alarm is sent to the power operation and maintenance dispatching center.

[0014] As a further supplement to the present application, in step S3: record the operating voltage data, operating current data and continuous charge and discharge time of the battery module A when it rises to T2, and then set a low-standard operating time, wherein: the low-standard operating time is less than the above-mentioned continuous charge and discharge time.

[0015] An automatic detection system based on power operation and maintenance scheduling, the use method of which also includes the following steps:

[0016] When it is monitored that the continuous charge and discharge time of battery module A reaches the low standard operation time, the backup power supply is used in advance to replace battery module A for the charge and discharge process, and the cooling module is started to perform a cooling process for the battery module for a fixed time.

[0017] As a further supplement to the present application, the operating voltage data, operating current data and continuous charge and discharge time of each battery module when it reaches T2 are compared by the quality classification module, so as to classify the battery modules into good and bad ones. The classification method includes the following steps:

[0018] 1. Calculate the intermediate voltage value based on the recorded minimum and maximum operating voltage data, and classify the battery modules whose operating voltage data at T3 is less than the intermediate voltage value as low-quality batteries, and conversely, the battery modules whose operating voltage data at T3 is higher than the intermediate voltage value are classified as high-quality batteries;

[0019] 2. Calculate the intermediate current value based on the recorded minimum and maximum operating current data, and classify the battery modules whose operating current data at T3 is less than the intermediate current value as low-quality batteries, and conversely, the battery modules whose operating current data at T3 is higher than the intermediate current value are classified as high-quality batteries;

[0020] 3. Calculate the intermediate duration value based on the shortest and longest continuous charge and discharge time recorded, and classify the battery modules whose continuous charge and discharge time at T3 is less than the intermediate duration value as low-quality batteries. Conversely, the battery modules whose continuous charge and discharge time at T3 is higher than the intermediate duration value are classified as high-quality batteries.

[0021] As a further supplement to the present application, the T2 temperature corresponding to the severe high temperature level of the classified low-quality batteries is lowered from T2 to Ta, and T2>Ta>T1.

[0022] As a further supplement to the present application, the outer diameters of the plurality of coils are different, and they are arranged inside and outside the cooling box.

[0023] As another improvement of the present application, the circulating cooling pipeline also includes a dehumidification box, the interior of the dehumidification box is slidably connected to a piston plate, the outer end of the dehumidification box is fixedly connected to an electric push rod, and the telescopic end of the electric push rod movably passes through the dehumidification box and is fixedly connected to the piston plate.

[0024] As another improved supplement of the present application, the outer end of the cooling box is fixedly connected with a return air pipe and an outlet air pipe which are communicated with the interior thereof, the return air pipe and the outlet air pipe are fixedly passed through the outer wall of the dehumidification box and communicated with the interior thereof, and the return air pipe and the outlet air pipe are respectively located on both sides of the piston plate, and the inner wall of the dehumidification box is fixedly connected with a pair of moisture absorption layers, and the pair of moisture absorption layers are also respectively located on both sides of the piston plate.

[0025] As another improved supplement of the present application, the cooling module is connected to a dehumidification module. After completing the cooling process of the battery module for a fixed period of time, the cooling module is turned off and the dehumidification module is started. The specific operations include the following: turning off the refrigerator, the air pump and the electrically controlled valve on the return pipe through the cooling module, and then starting the electric push rod through the dehumidification module to make the electric push rod retract and move, driving the piston plate to move up and down, so that the gas on both sides of the piston plate circulates in the cooling box and the dehumidification box along the return pipe and the outlet pipe, effectively removing water droplets on the surface of the coil.

[0026] To summarize, the present application divides the battery modules into three temperature levels, namely mild high temperature, severe high temperature and dangerous state, in advance. In the process of monitoring the battery modules, different processing methods such as cooling, switching to backup power supply, and cutting off circuit are carried out according to the temperature level triggered by the battery modules to reduce safety hazards. When the temperature reaches severe high temperature, the voltage, current and continuous charge and discharge time of the battery module are recorded. On the one hand, before the next severe high temperature is reached, the corresponding processing operations are performed in advance to further improve the operating safety of the battery module. On the other hand, the operating voltage data, operating current data and continuous charge and discharge time of each battery module when it reaches severe high temperature are compared through the quality classification module, so as to classify the battery modules into good and bad ones, and reduce the temperature trigger value of low-quality batteries at the severe high temperature level, thereby further improving the operating safety of low-quality batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a system diagram of the first and second implementation modes of the present application;

[0028] Figure 2 The three-dimensional cooling circuit of the first and second embodiments of the present application Figure 1 ;

[0029] Figure 3 The three-dimensional cooling circuit of the first and second embodiments of the present application Figure 2 ;

[0030] Figure 4 This is a three-dimensional diagram of cooling the battery module through the circulating cooling pipeline in the first and second embodiments of the present application;

[0031] Figure 5 This is a three-dimensional diagram of dehumidification through a circulating cooling pipeline in the second embodiment of the present application;

[0032] Figure 6 A three-dimensional diagram of the coil according to the first and second embodiments of the present application;

[0033] Figure 7This is a schematic diagram of the side structure when the battery module is cooled by a circulating cooling pipeline in the first and second embodiments of the present application;

[0034] Figure 8 This is a schematic diagram of the side structure when dehumidification is performed through a circulating cooling pipeline in the second embodiment of the present application;

[0035] Fig. 9 The side structure diagram of the dehumidification box of the second embodiment of the present application Figure 1 ;

[0036] Fig.10 The side structure diagram of the dehumidification box of the second embodiment of the present application is shown in FIG. Figure 2 .

[0037] Description of the numbers in the figure:

[0038] 1 battery box, 2 cooling box, 31 return pipe, 32 air pump, 41 return pipe, 42 outlet pipe, 5 dehumidification box, 6 refrigerator, 7 coil, 8 water collection box, 9 piston plate, 10 moisture absorption layer, 11 electric push rod. DETAILED DESCRIPTION

[0039] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0040] The first implementation method:

[0041] The present invention provides an automated detection system based on power operation and maintenance scheduling, please refer to Figure 1 , including a temperature monitoring module, a voltage monitoring module, a current monitoring module, a degradation module and a quality classification module for monitoring multiple battery modules, the temperature monitoring module is connected to a graded alarm module and a temperature grade database, the graded alarm module is connected to a cooling module, the voltage monitoring module is connected to a voltage database, the current monitoring module is connected to a current database and a timing module, and the timing module is connected to a charge and discharge duration library.

[0042] See also Figure 2 and Figure 3 The battery module includes a battery box 1, the battery box 1 is connected to a circulating cooling pipeline, and the circulating cooling pipeline includes a cooling box 2, combined with Figure 5As shown, the inner wall of the cooling box 2 is fixedly connected to a water collecting box 8, and one side end of the cooling box 2 is fixedly connected to a refrigerator 6. The cold end of the refrigerator 6 is fixedly passed through the cooling box 2 and the water collecting box 8 and extends to the inside of the water collecting box 8. The end of the water collecting box 8 away from the cooling box 2 is fixedly connected to a plurality of coils 7 communicated therewith, and the end of the coil 7 away from the water collecting box 8 is fixedly connected to the inner wall of the cooling box 2, and the interiors of the coils 7 and the water collecting box 8 are both filled with cooling water. The outer end of the cooling box 2 is fixedly connected to the outlet end of the air pump 32 and the return pipe 31, and the end of the return pipe 31 away from the cooling box 2 and the air inlet end of the air pump 32 are both fixedly connected to the inside of the battery box 1, and the return pipe 31 is fixedly connected to an electrically controlled valve, and the air pump 32, the refrigerator 6 and the electrically controlled valve are all electrically connected to the cooling module.

[0043] like Figure 6 As shown, the outer diameters of the plurality of coils 7 are different, and they are distributed inside the cooling box 2 in an inner and outer arrangement. After the gas enters the cooling box 2 through the outlet end of the air pump 32, it can gradually contact the outer surfaces of the plurality of coils 7 for heat exchange, thereby improving the heat exchange efficiency.

[0044] An automatic detection system based on power operation and maintenance scheduling, the use method of which includes the following steps:

[0045] S1. Monitor the operating temperature, voltage and current of all battery modules through the temperature monitoring module, voltage monitoring module and current monitoring module;

[0046] S2. When the temperature of a battery module is detected to rise to T1 and reaches a slightly high temperature level, the cooling module is started to cool the battery module for a fixed period of time;

[0047] S3. When the temperature of a battery module (referred to as battery module A) is detected to rise to T2 (T2 is greater than T1) and reaches a severe high temperature level, the backup power supply is used to replace battery module A for charging and discharging, and a high temperature warning is sent to the power operation and maintenance dispatching center, and a fixed-time cooling process is performed on battery module A;

[0048] When the cooling process is over and the temperature data of battery module A is lower than T2 and remains stable for a certain period of time, the backup power supply is disabled and the charging and discharging process is switched to battery module A to continue;

[0049] S4. When the temperature of a battery module (referred to as battery module B) is detected to rise to T3 (T3 is greater than T2) and reaches a dangerous level, all circuits connected to battery module B are cut off and a danger alarm is sent to the power operation and maintenance dispatching center.

[0050] The cooling process is as follows: Figure 4 and Figure 7As shown, the refrigerator 6 and the air pump 32 are started through the cooling module, and the electrically controlled valve on the return pipe 31 is opened. The cold end of the refrigerator 6 cools the cooling water in the coil 7 and the water collection box 8. The air pump 32 extracts the high-temperature gas in the battery box 1 and passes it into the interior of the cooling box 2. The gas exchanges heat with the cooled cooling water through the wall of the coil 7. The gas temperature drops and the cooling water temperature rises. Subsequently, the cooled gas returns to the battery box 1 through the return pipe 31, thereby realizing the cooling process inside the battery box 1.

[0051] In step S3: record the operating voltage data, operating current data and continuous charge and discharge time of the battery module A when it rises to T2, and then set a low-standard operating time, wherein: the low-standard operating time is less than the above-mentioned continuous charge and discharge time.

[0052] An automatic detection system based on power operation and maintenance scheduling, the use method of which also includes the following steps:

[0053] When it is monitored that the continuous charge and discharge time of battery module A reaches the low standard operation time, the backup power supply is used in advance to replace battery module A for the charge and discharge process, and the cooling module is started to perform a cooling process for the battery module for a fixed time.

[0054] By replacing the backup power supply in advance and cooling it down, the battery module is not easily heated to T2 temperature due to long-term excessive use, thereby reducing the probability of the battery module reaching severe high temperature and further improving the safety of battery module operation.

[0055] The quality classification module compares the operating voltage data, operating current data and continuous charge and discharge time of each battery module when it reaches T2, so as to classify the battery modules into good and bad ones. The classification method includes the following steps:

[0056] 1. Calculate the intermediate voltage value based on the recorded minimum and maximum operating voltage data, and classify the battery modules whose operating voltage data at T3 is less than the intermediate voltage value as low-quality batteries, and conversely, the battery modules whose operating voltage data at T3 is higher than the intermediate voltage value are classified as high-quality batteries;

[0057] 2. Calculate the intermediate current value based on the recorded minimum and maximum operating current data, and classify the battery modules whose operating current data at T3 is less than the intermediate current value as low-quality batteries, and conversely, the battery modules whose operating current data at T3 is higher than the intermediate current value are classified as high-quality batteries;

[0058] 3. Calculate the intermediate duration value based on the shortest and longest continuous charge and discharge time recorded, and classify the battery modules whose continuous charge and discharge time at T3 is less than the intermediate duration value as low-quality batteries. Conversely, the battery modules whose continuous charge and discharge time at T3 is higher than the intermediate duration value are classified as high-quality batteries.

[0059] From the above classification, it can be seen that the operating safety and stability of most low-quality batteries are weaker than those of high-quality batteries. Therefore, the T2 temperature corresponding to the severe high temperature level of the low-quality batteries after classification is lowered from T2 to Ta, and T2>Ta>T1, so that when the temperature of the low-quality batteries reaches Ta, they can reach the severe high temperature level, and replace the backup power supply, high temperature warning and cooling operations, thereby further improving the operating safety of the low-quality batteries.

[0060] Second implementation method:

[0061] This embodiment adds the following contents based on the embodiment 1: Figure 3 and Fig. 9 The circulating cooling pipeline also includes a dehumidification box 5, which is slidably connected to a piston plate 9 inside the dehumidification box 5, and an electric push rod 11 is fixedly connected to the outer end of the dehumidification box 5. The telescopic end of the electric push rod 11 movably penetrates the dehumidification box 5 and is fixedly connected to the piston plate 9. The outer ends of the cooling box 2 are respectively fixedly connected to a return air pipe 41 and an outlet air pipe 42 which are communicated with the interior thereof. The return air pipe 41 and the outlet air pipe 42 both fixedly penetrate the outer wall of the dehumidification box 5 and are communicated with the interior thereof, and the return air pipe 41 and the outlet air pipe 42 are respectively located on both sides of the piston plate 9. A pair of hygroscopic layers 10 are fixedly connected to the inner wall of the dehumidification box 5, and a pair of hygroscopic layers 10 are also respectively located on both sides of the piston plate 9. The hygroscopic layer 10 is a capsule filled with water-absorbing resin particles inside, and micropores with a pore size smaller than the water-absorbing resin particles are opened on the capsule. The cooling module is connected to a dehumidification module.

[0062] During the cooling process, the gas in the battery box 1 enters the cooling box 2 and exchanges heat with the cooling water through the wall of the coil 7. If the gas contains moisture, the moisture will condense into water droplets on the wall of the low-temperature coil 7. Therefore, after the battery module is cooled for a fixed period of time, the cooling module is turned off and the dehumidification module is started. The specific operations include the following: Please refer to Figure 5 , Figure 8 and Fig.10 The cooling module is used to close the refrigerator 6, the air pump 32 and the electrically controlled valve on the return pipe 31, and then the electric push rod 11 is started through the dehumidification module to make the electric push rod 11 telescopically move, driving the piston plate 9 to move up and down, so that the gas on both sides of the piston plate 9 circulates in and out of the cooling box 2 and the dehumidification box 5 along the return pipe 41 and the outlet pipe 42, effectively removing the water droplets on the surface of the coil 7.

[0063] When the gas in the piston plate 9 and the gas in the cooling box 2 circulate, the evaporation of water droplets on the surface of the coil 7 is accelerated by the airflow, so that the moisture enters the piston plate 9 along with the airflow and is absorbed by the moisture absorption layer 10. Through this operation, the effect of indirectly dehumidifying and drying the gas in the battery box 1 can be achieved, thereby further improving the operating safety of the battery box 1.

[0064] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An automated detection system based on power operation and maintenance scheduling, characterized in that: It includes a temperature monitoring module, a voltage monitoring module, a current monitoring module, a degradation module and a quality classification module for monitoring multiple battery modules, wherein the temperature monitoring module is connected to a classification alarm module and a temperature grade database, the classification alarm module is connected to a cooling module, the voltage monitoring module is connected to a voltage database, the current monitoring module is connected to a current database and a timing module, and the timing module is connected to a charge and discharge duration database; The battery module comprises a battery box (1), the battery box (1) being connected to a circulating cooling pipeline, the circulating cooling pipeline comprising a cooling box (2), the inner wall of the cooling box (2) being fixedly connected to a water header box (8), one side end of the cooling box (2) being fixedly connected to a refrigerator (6), the cold end of the refrigerator (6) being fixedly passed through the cooling box (2) and the water header box (8) and extending into the interior of the water header box (8), one end of the water header box (8) being away from the cooling box (2) being fixedly connected to a plurality of coils (7) communicating therewith, the coils (7) One end away from the water collecting box (8) is fixedly connected to the inner wall of the cooling box (2); the coil (7) and the water collecting box (8) are filled with cooling water; the outer end of the cooling box (2) is fixedly connected to the outlet end of the air pump (32) and the return pipe (31); the end of the return pipe (31) away from the cooling box (2) and the air inlet end of the air pump (32) are fixedly connected to the inside of the battery box (1); the return pipe (31) is fixedly connected to an electric control valve; the air pump (32), the refrigerator (6) and the electric control valve are all electrically connected to the cooling module; The above-mentioned automatic detection system based on power operation and maintenance scheduling, and its use method includes the following steps: S1. Monitor the operating temperature, voltage and current of all battery modules through the temperature monitoring module, voltage monitoring module and current monitoring module; S2. When the temperature of a battery module is detected to rise to T1 and reaches a slightly high temperature level, the cooling module is started to cool the battery module for a fixed period of time; S3. When the temperature of a battery module is monitored to rise to T2, T2 is greater than T1, and reaches a severe high temperature level, the battery module is recorded as battery module A, and the backup power supply is used to replace battery module A for charging and discharging. At the same time, a high temperature warning is issued to the power operation and maintenance dispatching center, and a fixed-time cooling process is performed on battery module A; When the cooling process is over and the temperature data of battery module A is lower than T2 and remains stable for a certain period of time, the backup power supply is disabled and the charging and discharging process is switched to battery module A to continue; In step S3: record the operating voltage data, operating current data and continuous charge and discharge time of the battery module A when it rises to T2, and then set a low-standard operating time, wherein: the low-standard operating time is less than the above-mentioned continuous charge and discharge time; The quality classification module compares the operating voltage data, operating current data and continuous charge and discharge time of each battery module when it reaches T2, so as to classify the battery modules into good and bad ones. The classification method includes the following steps:

1. Calculate the intermediate voltage value based on the recorded minimum and maximum operating voltage data, and classify the battery modules whose operating voltage data at T3 is less than the intermediate voltage value as low-quality batteries, and conversely, the battery modules whose operating voltage data at T3 is higher than the intermediate voltage value are classified as high-quality batteries; 2. Calculate the intermediate current value based on the recorded minimum and maximum operating current data, and classify the battery modules whose operating current data at T3 is less than the intermediate current value as low-quality batteries, and conversely, the battery modules whose operating current data at T3 is higher than the intermediate current value are classified as high-quality batteries; 3. Calculate the intermediate duration value based on the shortest and longest continuous charge and discharge time recorded, and classify the battery module whose continuous charge and discharge time at T3 is less than the intermediate duration value as a low-quality battery. Conversely, the battery module whose continuous charge and discharge time at T3 is longer than the intermediate duration value is classified as a high-quality battery. The T2 temperature of the classified low-quality batteries corresponding to the severe high temperature level is lowered from T2 to Ta, and T2>Ta>T1; S4. When the temperature of a battery module is monitored to rise to T3, T3 is greater than T2, and reaches a dangerous level, the battery module is recorded as battery module B, all circuits connected to battery module B are cut off, and a danger alarm is sent to the power operation and maintenance dispatching center.

2. The automatic detection system based on power operation and maintenance scheduling according to claim 1 is characterized in that: The method of using the same also includes the following steps: When it is monitored that the continuous charge and discharge time of battery module A reaches the low standard operation time, the backup power supply is used in advance to replace battery module A for the charge and discharge process, and the cooling module is started to perform a cooling process for the battery module for a fixed time.

3. The automatic detection system based on power operation and maintenance scheduling according to claim 1 is characterized in that: The outer diameters of the plurality of coils (7) are different, and they are arranged inside and outside the cooling box (2).

4. The automatic detection system based on power operation and maintenance scheduling according to claim 1 is characterized in that: The circulating cooling pipeline also includes a dehumidification box (5), the interior of the dehumidification box (5) is slidably connected to a piston plate (9), the outer end of the dehumidification box (5) is fixedly connected to an electric push rod (11), and the telescopic end of the electric push rod (11) movably passes through the dehumidification box (5) and is fixedly connected to the piston plate (9).

5. The automatic detection system based on power operation and maintenance scheduling according to claim 4 is characterized in that: The outer ends of the cooling box (2) are respectively fixedly connected with a return air pipe (41) and an outlet air pipe (42) which are communicated with the interior thereof; the return air pipe (41) and the outlet air pipe (42) are both fixedly passed through the outer wall of the dehumidification box (5) and communicated with the interior thereof; the return air pipe (41) and the outlet air pipe (42) are respectively located on both sides of the piston plate (9); the inner wall of the dehumidification box (5) is fixedly connected with a pair of moisture absorption layers (10); and the pair of moisture absorption layers (10) are also respectively located on both sides of the piston plate (9).

6. The automatic detection system based on power operation and maintenance scheduling according to claim 5 is characterized in that: The cooling module is connected to a dehumidification module. After the battery module is cooled for a fixed period of time, the cooling module is turned off and the dehumidification module is started. The specific operation includes the following: the cooling module turns off the refrigerator (6), the air pump (32) and the electric control valve on the return pipe (31), and then the dehumidification module starts the electric push rod (11), so that the electric push rod (11) performs telescopic movement, driving the piston plate (9) to move up and down, so that the gas on both sides of the piston plate (9) circulates in and out of the cooling box (2) and the dehumidification box (5) along the return pipe (41) and the outlet pipe (42), effectively removing water droplets on the surface of the coil (7).

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