Cooling mechanism based on energy storage battery prefabricated cabin

Abstract

The utility model belongs to the technical field of energy storage battery cooling, and particularly relates to a cooling mechanism based on an energy storage battery prefabricated cabin, which comprises a foundation platform, a prefabricated cabin fixedly mounted on the surface of the outer side of the top of the foundation platform, and a cooling top cover detachably mounted on the surface of the outer side of the top of the prefabricated cabin, the energy storage battery boxes are detachably installed on the inner wall faces of the two sides of the prefabricated cabin, an airflow closed type cooling unit is arranged on the inner side wall face of the top of the cooling top cover, and the airflow closed type cooling unit comprises a trapezoidal sleeve shell fixedly connected to the inner side wall face of the cooling top cover. According to the utility model, cooled gas passes through the top surface of the cold water cavity and is discharged into the prefabricated cabin, after the cooled gas is continuously accumulated in the prefabricated cabin, low-temperature cold air in the prefabricated cabin is absorbed in cooperation with the air blower, and the low-temperature cold air is sprayed into the energy storage battery box; a certain gap is reserved between the energy storage battery pack and the inner wall surface of the energy storage battery box.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage battery cooling, in particular to a cooling mechanism based on a prefabricated cabin of an energy storage battery. Background Art

[0002] Sodium-ion batteries are secondary batteries that rely primarily on the movement of sodium ions between positive and negative electrodes, similar to the working principle of lithium-ion batteries. The electrode materials used in sodium-ion batteries are primarily sodium salts, which are more abundant and cheaper than lithium salts. Because sodium ions are larger than lithium ions, sodium-ion batteries are a cost-effective alternative when weight and energy density are not critical.

[0003] The prefabricated battery energy storage cabin includes a battery cabin, an electrical cabin, battery racks, and fire escapes. Firefighting and monitoring systems are installed in the battery and electrical cabins. Multiple cooling systems are installed on top of the battery cabin, and the electrical cabin is equipped with an inverter. Through the battery management system, the energy storage battery pack can be managed, enabling it to function as a backup power source and an energy storage power station. The prefabricated battery energy storage cabin features a highly complete system, a simple system, a small size, high mobility, strong environmental adaptability, and safe and reliable operation. With the rapid development of sodium-ion battery materials and further advancements in battery technology, sodium-ion batteries have become the most widely used battery in battery energy storage systems. Within the prefabricated cabin, due to energy density and space limitations, the batteries are densely arranged on the battery racks within the prefabricated cabin, and temperatures can easily rise. Although the thermal runaway onset temperature of sodium-ion batteries is higher than that of lithium-ion batteries, the risk of explosion under thermal runaway conditions cannot be completely eliminated.

[0004] In the current existing technology, when the prefabricated cabin is in operation, the internal coolant flows rapidly, using the coolant to reduce the temperature inside the cabin. However, the rapid and continuous flow of coolant causes the pressure inside the guide tube to continuously increase. The pressurized coolant inside the tube may overflow from the device, and its corrosive properties may damage the device's service life. Existing coolant is directed through the guide tube, and the coolant absorbs heat from the surface of the guide tube, keeping the surface of the guide tube at a constant low temperature. The guide tube then contacts and absorbs heat from external heat sources. However, the existing guide tube is relatively thin, and the low-temperature gas only adheres to the surface of the guide tube, limiting the range and area of heat absorption. Only localized areas can be cooled, and areas farther away from the guide tube cannot be effectively cooled. Furthermore, the existing guide tube is relatively thin, and the capacity of coolant that can flow at one time is limited. After the heat source is absorbed in the front half of the guide tube, the water temperature inside will rise, causing the water temperature in the back half of the guide tube to overheat, making it impossible to effectively cool the subsequent guide tubes.

[0005] To this end, the utility model provides a cooling mechanism based on a prefabricated energy storage battery compartment. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The cooling unit is installed on the upper and lower surfaces of the cooling unit, and the cooling unit is installed on the upper and lower surfaces of the cooling unit.

[0008] The interior of the prefabricated cabin is provided with a first chamber and a second chamber respectively;

[0009] The back of the energy storage battery box is provided with a ventilation slot attached to the inner wall of the prefabricated cabin, a blower is provided on the top inner wall of the energy storage battery box, and a lap plate is fixedly connected to the inner wall of the energy storage battery box.

[0010] Preferably, an energy storage battery pack is detachably mounted inside the energy storage battery box and on the top surface of the lap plate, and an exhaust notch is provided on the back side of the energy storage battery box and at the bottom edge.

[0011] Preferably, a condenser is fixedly installed on the inner wall of the second chamber, and a recirculation liquid guide pipe is fixedly connected to the output end of the condenser.

[0012] Preferably, pads that are movably fitted on the bottom corners of the energy storage battery pack are fixedly connected to the top surface of the lap plate and located on the four edges. A gap is provided between the outer surface of the energy storage battery pack and the inner wall of the energy storage battery box. A closing door provided on the outer surface of the energy storage battery pack is swingably sleeved on the front of the energy storage battery box.

[0013] Preferably, air vents fixedly connected to the surface of the fan output end are symmetrically provided on both side edges of the top of the trapezoidal casing.

[0014] Preferably, a partition is provided on the inner wall surface of the bottom of the trapezoidal casing and on the bottom surface of the sealing partition, and an air guide slot is provided between the cooling top cover and the trapezoidal casing.

[0015] Preferably, the other end of the circulating liquid conduit passes through the trapezoidal casing and extends to the inner wall surface of the cold water chamber.

[0016] Preferably, the other end of the circulating liquid conduit passes through the trapezoidal casing and extends to the inner wall surface of the cold water chamber.

[0017] The beneficial effects of the utility model are as follows:

[0018] The cooling air is then drawn out of the cooling chamber and out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is then drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling air is drawn out of the cooling chamber, and the cooling

[0019] 2. The cooling mechanism based on the energy storage battery prefabricated cabin described in the present invention cooperates with a blower to inject the low-temperature cold air accumulated in the prefabricated cabin into the interior of the energy storage battery box, cooperates with a sealing partition to divide the trapezoidal shell into a cold water chamber and a condensing air chamber, cooperates with a condenser to inject cooling water into the interior of a circulating liquid guide tube, and cooperates with a circulating liquid guide tube to inject cooling water into the interior of the cold water chamber. At the same time, the condensing copper tube on the outer surface of the condensing air chamber is in contact with the cooling water inside the cold water chamber. The extremely high thermal conductivity and heat transfer performance of the condensing copper tube are combined with the extremely high thermal conductivity and heat transfer performance of the condensing copper tube. The condensing copper tube utilizes the excellent thermal conductivity of copper, and copper has good thermal conductivity and corrosion resistance. The copper tube can be widely used in refrigeration, heating, heat exchange and other fields, so that the surface of the condensing copper tube in contact with the low-temperature cooling water is in an extremely low temperature state. At the same time, the input end of the blower is connected to the top inlet of the ventilation slot to generate the cooling water inside the energy storage battery box. The heat source is absorbed by the fans and is injected into the interior of the condenser cavity. The hot air discharged by the fans on both sides is counteracted in the interior of the condenser cavity when passing through the top surface of the trapezoidal shell. The counteracted heat source will contact the condensing copper tube inside the condenser cavity. The extremely high thermal conductivity of the condensing copper tube is used to transfer the heat source inside the condenser cavity through the condensing copper tube into the coolant inside the cold water cavity. The extremely low temperature inside the coolant is then transferred into the interior of the condenser cavity through the condensing copper tube, achieving the goal of cooling by the back and forth transfer of heat source, thereby quickly cooling the heat source. Moreover, when the low-temperature cooling water flows in the cold water cavity, the larger space inside the cold water cavity can effectively increase the flow rate of low-temperature cooling water, and driven by the suction and release of the condenser, the excessive accumulation of low-temperature coolant inside the cold water cavity is reduced, causing squeezing and then causing cooling water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the prefabricated cabin in the present utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the cooling top cover in the present invention;

[0024] Figure 4 This is a schematic diagram of a partially cutaway three-dimensional structure of the cooling top cover in the present invention;

[0025] Figure 5 This is a schematic diagram of the expanded three-dimensional structure of the energy storage battery box in the present utility model;

[0026] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the energy storage battery box in the present utility model.

[0027] In the figure: 11. Foundation platform; 12. Prefabricated cabin; 121. Chamber No. 1; 122. Chamber No. 2; 123. Condenser; 124. Circulating liquid guide pipe; 13. Cooling cover; 131. Fan; 132. Trapezoidal casing; 133. Ventilation port; 134. Sealing partition; 135. Cold water chamber; 136. Condensation air chamber; 137. Condensation copper pipe; 138. Air guide slot; 14. Energy storage battery box; 141. Ventilation slot; 142. Blower; 143. Lap plate; 144. Exhaust slot; 145. Closing door; 146. Energy storage battery pack. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figures 1 to 6 As shown, a cooling mechanism based on a prefabricated energy storage battery cabin of an embodiment of the present invention comprises a base 11 and a prefabricated cabin 12 fixedly mounted on the top outer surface of the base 11, a cooling top cover 13 detachably mounted on the top outer surface of the prefabricated cabin 12, an energy storage battery box 14 detachably mounted on the inner wall surfaces on both sides of the prefabricated cabin 12, an airflow-enclosed cooling unit is provided on the top inner wall surface of the cooling top cover 13, and the airflow-enclosed cooling unit comprises a cooling unit fixedly connected to the inner wall surface of the cooling top cover 13. Trapezoidal casing 132, fans 131 are symmetrically fixedly mounted on both side edges of the top of the cooling top cover 13. Air vents are provided on the top surface of the trapezoidal casing 132. A sealing baffle 134 is fixedly connected to the middle position of the inner side of the trapezoidal casing 132. A cold water chamber 135 and a condensing air chamber 136 are respectively provided on the upper and lower sides of the sealing baffle 134. Condensing copper tubes 137 are fixedly connected to the outer surface of the sealing baffle 134 and extend to the inner walls of the cold water chamber 135 and the condensing air chamber 136 respectively.

[0030] The interior of the prefabricated cabin 12 is provided with a first chamber 121 and a second chamber 122. A condenser 123 is fixedly mounted on the inner wall of the second chamber 122. A recirculation conduit 124 is fixedly connected to the output end of the condenser 123.

[0031] The back of the energy storage battery box 14 is provided with a ventilation slot 141 that is attached to the inner wall of the prefabricated cabin 12. A blower 142 is provided on the top inner wall of the energy storage battery box 14. A lap plate 143 is fixedly connected to the inner wall of the energy storage battery box 14. An energy storage battery pack 146 is detachably mounted inside the energy storage battery box 14 and on the top surface of the lap plate 143. An exhaust notch 144 is provided on the back of the energy storage battery box 14 and at the bottom edge.

[0032] The blower 142 is used to inject the low-temperature cold air accumulated inside the prefabricated cabin 12 into the interior of the energy storage battery box 14. The sealing partition 134 is used to divide the trapezoidal shell 132 into a cold water chamber 135 and a condensing air chamber 136. The condenser 123 is used to inject cooling water into the interior of the circulating liquid conduit 124. The circulating liquid conduit 124 is used to inject cooling water into the interior of the cold water chamber 135. At the same time, the condensing copper tube 137 on the outer surface of the condensing air chamber 136 is used to contact the cooling water inside the cold water chamber 135. The condensing copper tube 137 has extremely high thermal conductivity and heat transfer performance. The condensing copper tube 137 utilizes the excellent thermal conductivity of copper. Copper has good thermal conductivity and corrosion resistance. Copper tubes can be widely used in refrigeration, heating, heat exchange and other fields. The surface of the condensing copper tube 137 in contact with the low-temperature cooling water is kept at an extremely low temperature. At the same time, the input end of the fan 131 is connected to the top entrance of the ventilation slot 141 to absorb the heat source generated inside the energy storage battery box 14 and inject it into the interior of the condensing air cavity 136. The hot air discharged by the fans 131 on both sides is counteracted in the interior of the condensing air cavity 136 when passing through the top surface of the trapezoidal casing 132. The counteracting heat source will contact the condensing copper tube 137 inside the condensing air cavity 136. By utilizing the extremely high thermal conductivity of the condensing copper tube 137, the heat source inside the condensing air cavity 136 is transferred into the coolant inside the cold water cavity 135 through the condensing copper tube 137, and then the extremely low temperature inside the coolant is discharged through the condensing copper tube 137. The temperature is transferred into the interior of the condensing air cavity 136 through the condensing copper tube 137, achieving the purpose of cooling by transferring the heat source back and forth, thereby quickly cooling the heat source. Moreover, when the low-temperature cooling water flows in the interior of the cold water cavity 135, the larger space inside the cold water cavity 135 can effectively increase the flow rate of the low-temperature cooling water. Moreover, driven by the suction and discharge of the condenser 123, the excessive accumulation of the low-temperature coolant in the interior of the cold water cavity 135 is reduced, which causes squeezing and thus leakage of the cooling water. As the cooled gas passes through the top surface of the cold water cavity 135 and is discharged into the interior of the prefabricated cabin 12, as the cooled gas continues to accumulate inside the prefabricated cabin 12, the blower 142 is used to absorb the low-temperature cold air inside the prefabricated cabin 12, and the low-temperature cold air is blown away. The air is sprayed into the interior of the energy storage battery box 14. Since there is a certain gap between the energy storage battery pack 146 and the inner wall of the energy storage battery box 14, when the low-temperature cold air slides on the surface of the energy storage battery pack 146, the gap between the energy storage battery pack 146 and the inner wall of the energy storage battery box 14 allows the low-temperature cold air to fully contact the energy storage battery pack 146, thereby effectively and comprehensively cooling the energy storage battery pack 146. The excess hot air is then injected into the interior of the ventilation slot 141 through the exhaust slot 144. As the hot air continues to accumulate inside the ventilation slot 141 and spreads upward, the rising air flow is recovered and reused by the fan 131, thereby achieving the discharge of the cooled hot air flow, and then the hot air is absorbed by the fan 131.Furthermore, the condensing copper tube 137 is used to cool the air, reducing the effect of excessive heat leakage. This prevents the heat discharged from the energy storage battery pack 146 after cooling from accumulating in the interior space of the prefabricated cabin 12. Low-temperature cold air can only be cooled gradually. As the low-temperature cold air continues to come into contact with the high-temperature airflow, its temperature gradually rises. Locations farther away will experience reduced cooling efficiency due to the temperature increase. The fan 131 is used to remove heat from the air outlet of the ventilation slot 141 to reduce heat leakage. After cooling, the air is directly discharged and then absorbed by the blower 142. This forms an air circulation system, reduces the temperature, and reduces heat leakage.

[0033] like Figures 1 to 6 As shown, the top surface of the lap plate 143 is fixedly connected to pads that are movably fitted on the bottom corners of the energy storage battery pack 146 at the four edges. A gap is provided between the outer surface of the energy storage battery pack 146 and the inner wall of the energy storage battery box 14. A closing door 145 provided on the outer surface of the energy storage battery pack 146 is swingably sleeved on the front of the energy storage battery box 14. Ventilation ports 133 fixedly connected to the output end surface of the fan 131 are symmetrically provided at the top and side edges of the trapezoidal casing 132. A partition is provided on the bottom inner wall of the trapezoidal casing 132 and at the bottom surface of the sealing partition 134. An air guide slot 138 is provided between the cooling top cover 13 and the trapezoidal casing 132. The other end of the circulating liquid guide pipe 124 passes through the trapezoidal casing 132 and extends to the inner wall of the cold water chamber 135.

[0034] The energy storage battery pack 146 is raised by using a pad so that there is a certain gap between the surface of the energy storage battery pack 146 and the inner wall of the energy storage battery box 14. At the same time, the blower 142 is used to infuse the low-temperature cold air in the internal space of the prefabricated cabin 12 to the outer surface of the energy storage battery pack 146, and then the flow space of the low-temperature cold air is increased through the gap on the outer surface of the energy storage battery pack 146. At the same time, the gap is used to make the low-temperature cold air wrap around the outer surface of the energy storage battery pack 146, and the outer surface of the energy storage battery pack 146 is subjected to an all-round cooling treatment. The gas after absorbing the hot air is then discharged through the exhaust. The air is discharged from the air slot 144 into the interior of the ventilation slot 141. Since the back of the energy storage battery box 14 is attached to the inner wall of the No. 1 chamber 121, the interior of the ventilation slot 141 is in an independent wrapped space, so that the hot air accumulated inside the ventilation slot 141 will gradually spread upward. At the same time, the fan 131 is used to absorb the gas at the outlet of the ventilation slot 141, and the suction force of the fan 131 is used to increase the flow rate of the gas inside the ventilation slot 141. Under the suction force of the fan 131, the hot air on the outer surface of the energy storage battery pack 146 will increase and continuously flow, thereby increasing the flow rate.

[0035] Working principle: The blower 142 is used to inject the low-temperature cold air accumulated inside the prefabricated cabin 12 into the interior of the energy storage battery box 14, and the sealing partition 134 is used to divide the trapezoidal shell 132 into a cold water chamber 135 and a condensing air chamber 136. The condenser 123 is used to inject cooling water into the interior of the circulating liquid conduit 124, and the circulating liquid conduit 124 is used to inject cooling water into the interior of the cold water chamber 135. At the same time, the condensing copper tube 137 on the outer surface of the condensing air chamber 136 and the cooling inside the cold water chamber 135 are used. The condenser copper tube 137 is in contact with the low-temperature cooling water, and the condenser copper tube 137 has high thermal conductivity and heat transfer performance. The condenser copper tube 137 utilizes the excellent thermal conductivity of copper. Copper has good thermal conductivity and corrosion resistance. Copper tubes can be widely used in refrigeration, heating, heat exchange and other fields. The surface of the condenser copper tube 137 in contact with the low-temperature cooling water is kept at an extremely low temperature. At the same time, the input end of the fan 131 is connected to the top entrance of the ventilation slot 141 to absorb the heat source generated inside the energy storage battery box 14. The heat is then pumped into the condensing air cavity 136. The hot air discharged by the fans 131 on both sides is countered by the heat source inside the condensing air cavity 136 when passing through the top surface of the trapezoidal casing 132. The countered heat source will contact the condensing copper tube 137 inside the condensing air cavity 136. The high thermal conductivity of the condensing copper tube 137 is used to transfer the heat source inside the condensing air cavity 136 into the coolant inside the cold water cavity 135 through the condensing copper tube 137. Then, the coolant inside the coolant is heated by the condensing copper tube 137. The extremely low temperature of the interior is transferred into the interior of the condensing air cavity 136 through the condensing copper tube 137, achieving the effect of cooling by transferring the heat source back and forth, thereby rapidly cooling the heat source. Moreover, when the low-temperature cooling water flows inside the cold water cavity 135, the larger space inside the cold water cavity 135 can effectively increase the flow rate of the low-temperature cooling water. Moreover, driven by the suction and discharge of the condenser 123, the low-temperature cooling liquid is reduced from excessive accumulation inside the cold water cavity 135, which causes squeezing and thus cooling water leakage.

[0036] As the cooled gas passes through the top surface of the cold water chamber 135 and is discharged into the interior of the prefabricated cabin 12, as the cooled gas continues to accumulate inside the prefabricated cabin 12, the blower 142 is used to absorb the low-temperature cold air inside the prefabricated cabin 12 and spray the low-temperature cold air into the energy storage battery box 14. Since there is a certain gap between the energy storage battery group 146 and the inner wall of the energy storage battery box 14, when the low-temperature cold air slides on the surface of the energy storage battery group 146, the gap between the energy storage battery group 146 and the inner wall of the energy storage battery box 14 is used. The gap allows the low-temperature cold air to fully contact the energy storage battery pack 146, effectively and comprehensively cooling the energy storage battery pack 146, and then the excess hot air is pumped into the interior of the ventilation slot 141 through the exhaust slot 144. As the hot air continues to accumulate inside the ventilation slot 141 and spreads upward, the rising air flow is recovered and reused by the fan 131, thereby achieving the effect of discharging the cooled hot air flow, and then absorbing the hot air through the fan 131 and cooling it through the condensing copper tube 137, thereby reducing the excessive leakage of the heat source.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A cooling mechanism based on a prefabricated energy storage battery cabin, comprising a base (11) and a prefabricated cabin (12) fixedly mounted on the top outer surface of the base (11), a cooling top cover (13) detachably mounted on the top outer surface of the prefabricated cabin (12), and energy storage battery boxes (14) detachably mounted on the inner wall surfaces on both sides of the prefabricated cabin (12), characterized in that: An airflow-enclosed cooling unit is provided on the inner wall surface of the top of the cooling top cover (13), and the airflow-enclosed cooling unit includes a trapezoidal casing (132) fixedly connected to the inner wall surface of the cooling top cover (13), and fans (131) are symmetrically fixedly installed on the edge positions of both sides of the top of the cooling top cover (13), and air holes are opened on the top surface of the trapezoidal casing (132), and a sealing partition (134) is fixedly connected to the inner middle position of the trapezoidal casing (132), and a cold water cavity (135) and a condensing air cavity (136) are respectively provided on the upper and lower sides of the sealing partition (134), and a condensing copper tube (137) extending to the inner wall surfaces of the cold water cavity (135) and the condensing air cavity (136) is fixedly connected to the outer surface of the sealing partition (134); The prefabricated cabin (12) is provided with a first chamber (121) and a second chamber (122) inside. The back of the energy storage battery box (14) is provided with a ventilation slot (141) that is attached to the inner wall of the prefabricated cabin (12), a blower (142) is provided on the top inner wall of the energy storage battery box (14), and a lap plate (143) is fixedly connected to the inner wall of the energy storage battery box (14).

2. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 1, characterized in that: An energy storage battery pack (146) is detachably mounted inside the energy storage battery box (14) and on the top surface of the connecting plate (143).

3. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 1, characterized in that: A condenser (123) is fixedly mounted on the inner wall surface of the second chamber (122), and a recirculation guide tube (124) is fixedly connected to the output end of the condenser (123).

4. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 2, characterized in that: An exhaust notch (144) is provided on the back side of the energy storage battery box (14) and at the bottom edge thereof, and pads are fixedly connected to the top surface of the lap plate (143) and at the surrounding edges thereof, and are movably fitted to the bottom corners of the energy storage battery pack (146).

5. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 4, characterized in that: A gap is provided between the outer surface of the energy storage battery pack (146) and the inner wall surface of the energy storage battery box (14).

6. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 1, characterized in that: A closing door (145) arranged on the outer surface of the energy storage battery pack (146) is swingably sleeved on the front surface of the energy storage battery box (14).

7. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 1, characterized in that: Air vents (133) fixedly connected to the output end surface of the fan (131) are symmetrically provided on both side edges of the top of the trapezoidal casing (132).

8. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 1, characterized in that: A partition is provided on the bottom inner wall surface of the trapezoidal casing (132) and on the bottom surface of the sealing partition (134).

9. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 1, characterized in that: An air guide notch (138) is provided between the cooling top cover (13) and the trapezoidal casing (132).

10. The cooling mechanism based on the energy storage battery prefabricated cabin according to claim 3, characterized in that: The other end of the circulating liquid conduit (124) passes through the trapezoidal casing (132) and extends to the inner wall surface of the cold water chamber (135).

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