A battery heat dissipation device and method for lithium iron phosphate battery energy storage

Abstract

The present invention discloses a battery heat dissipation device and method for lithium iron phosphate battery energy storage, comprising: an energy storage cabinet, a lifting assembly, arranged on the inner wall of the energy storage cabinet, wherein the lifting assembly includes a lifting plate, a guide rail, a rack, a restraining rod, a telescopic cylinder, a latch, a return spring, and a drag reduction wheel, and the drag reduction wheel is rotatably inserted into a groove on the inner wall of the lifting plate. The combination of a liquid cooling plate and thermal paste ensures that the energy storage battery can obtain effective heat conduction and heat dissipation. The provision of a booster fan and a breathable plate further improves the heat dissipation efficiency. The design of the lifting assembly allows the energy storage battery to be easily placed in and out, while the lifting plate can move on the guide rail for easy position adjustment. Through the action of the telescopic cylinder and the return spring, the latch can engage with the rack, and the movable rotating frame and the coating roller roll the thermal paste on the outer wall of the energy storage battery. The design of the support spring enables the rotating frame to generate torque, ensuring that the thermal paste can be evenly coated on the outer wall of the energy storage battery.

Description

Technical Field

[0001] The present invention belongs to the field of energy storage technology, and specifically relates to a battery heat dissipation device and method for lithium iron phosphate battery energy storage. Background Art

[0002] An energy storage battery is a device that converts electrical energy into chemical energy (or physical energy, kinetic energy) and stores it, releasing the stored energy as electrical energy when needed. It is a key technology in the energy storage field and is of great significance for improving energy efficiency, promoting the use of clean energy, reducing carbon emissions, and achieving energy transition and sustainable development. The following is a detailed introduction to energy storage batteries: Energy storage batteries primarily store and release electrical energy through components such as the positive electrode, negative electrode, electrolyte, and separator. During charging, electrical energy is converted into chemical energy and stored within the battery; during discharge, the stored chemical energy is converted into electrical energy for output. During this process, a chemical reaction occurs between the positive and negative electrodes, involving electron transfer and ion migration, generating an electric current. The separator prevents direct contact between the positive and negative electrodes, ensuring the proper functioning of the battery.

[0003] A lithium iron phosphate battery is a lithium-ion battery that uses lithium iron phosphate (LiFePO4) as the positive electrode material and carbon (usually graphite) as the negative electrode material. The following is a detailed description of lithium iron phosphate batteries: Structure: A lithium iron phosphate battery consists of a positive electrode (lithium iron phosphate material), a negative electrode (carbon material), an electrolyte, and a separator. The positive electrode is connected to the positive electrode of the battery via aluminum foil, while the negative electrode is connected to the negative electrode via copper foil. A polymer separator separates the positive and negative electrodes, allowing lithium ions to pass through the separator but not electrons. Working Principle: During charging, some lithium ions in the lithium iron phosphate are released, transferred through the electrolyte to the negative electrode, and embedded in the negative electrode's carbon material. Simultaneously, electrons are released from the positive electrode and travel through an external circuit to the negative electrode, maintaining chemical equilibrium. The discharge process is the opposite: lithium ions are released from the negative electrode, travel through the electrolyte to the positive electrode, and electrons are released from the negative electrode and travel through an external circuit to the positive electrode, providing energy to the outside world.

[0004] Gap problem between liquid cooling plate and outer wall of lithium iron phosphate battery

[0005] In lithium iron phosphate battery energy storage systems, the liquid cooling plate is a key component for heat dissipation. However, due to the following reasons, there is often a gap between the liquid cooling plate and the outer wall of the lithium iron phosphate battery:

[0006] Insufficient manufacturing precision:

[0007] During the manufacturing process of the liquid cooling plate and lithium iron phosphate battery, due to process limitations or lax quality control, there may be some deviation in the size and shape of the two. This deviation will prevent the liquid cooling plate from completely fitting against the outer wall of the battery during assembly, resulting in a gap.

[0008] Differences in material thermal expansion coefficients: The liquid cooling plate and lithium iron phosphate battery are made of different materials, and their thermal expansion coefficients may differ. During battery operation, temperature fluctuations may cause relative displacement between the two due to this difference in thermal expansion coefficients, resulting in gaps.

[0009] Installation issues: Improper installation techniques, such as insufficient tightening force or an incorrect tightening sequence, can create gaps between the liquid cooling plate and the lithium iron phosphate battery. These gaps can severely impact the heat exchange efficiency between the liquid cooling plate and the lithium iron phosphate battery. This hinders the flow of coolant and heat transfer, preventing the heat generated by the battery from being removed promptly, thus affecting battery performance and safety.

[0010] Second, the lithium iron phosphate battery storage mechanism cannot be raised or lowered. The storage and lifting of lithium iron phosphate batteries is a critical component of energy storage systems. However, existing lithium iron phosphate battery storage mechanisms often cannot be raised or lowered due to the following reasons: Structural design limitations: The lithium iron phosphate battery storage mechanism may have been designed only for horizontal placement and fixed installation, without considering the need for lifting. This design limitation makes it impossible to directly lift the battery through the storage mechanism when lifting is required.

[0011] Safety Considerations: Lithium iron phosphate batteries are heavy and bulky. Improper handling during the lifting process can pose a safety hazard to personnel and equipment. Therefore, to ensure safety, some energy storage systems may intentionally avoid the use of lifting mechanisms during design. Cost and Maintenance Considerations: The design, manufacture, and maintenance of lifting mechanisms require significant investment. If the energy storage system budget is limited or the maintenance personnel are less skilled, they may choose not to install a lifting mechanism to reduce costs and maintenance difficulties. Summary of the Invention

[0012] The technical solution adopted by the present invention is as follows: a battery heat dissipation device and method for lithium iron phosphate battery energy storage, comprising:

[0013] Energy storage cabinet;

[0014] A lifting assembly is provided on the inner wall of the energy storage cabinet, wherein: the lifting assembly includes a lifting plate, a guide rail, a rack, a restraining rod, a telescopic cylinder, a latch, a return spring and a drag reduction wheel; the drag reduction wheel is rotatably inserted into a groove on the inner wall of the lifting plate; the guide rail and the rack are both fixedly provided on the inner wall of the energy storage cabinet; the drag reduction wheel is rotatably embedded in the inner wall of the guide rail; the restraining rod is fixedly provided at the corners on both sides of the outer wall of the lifting plate; the telescopic cylinder is fixedly provided at the corners on both sides of the outer wall of the lifting plate; the latch is fixedly provided at the output end of the telescopic cylinder; the return spring is sleeved on the outer wall of the output end of the telescopic cylinder; the rack and the latch match each other;

[0015] The heat dissipation component is arranged on the inner wall of the energy storage cabinet, wherein: the heat dissipation component includes a movable plate, a limiting groove, a sealing shell, a liquid cooling plate, a movable frame, a limiting rod, a rotating frame, a coating roller, a nozzle and a support spring, the limiting groove is opened at both sides of the inner wall of the lifting plate, the movable plate is slidably embedded in the inner wall of the limiting groove, the sealing shell is fixedly arranged on the outer wall of the lifting plate, the liquid cooling plate is slidably embedded in the inner wall of the sealing shell, the movable frame is slidably embedded in the inner wall of the sealing shell, the limiting rod is embedded in the inner wall of one end of the movable frame, the rotating frame is rotatably sleeved on the outer wall of the limiting rod, the coating roller is rotatably inserted into the inner wall opening of one end of the rotating frame, the nozzle is fixedly arranged on one side of the outer wall of the rotating frame, one end of the support spring is fixedly arranged on one side of the outer wall of the rotating frame, and the other end of the support spring is fixedly arranged on the outer wall of the movable frame.

[0016] Furthermore, an isolation plate is fixedly provided on one side of the outer wall of the energy storage cabinet, and a delivery hole is opened on one side of the outer wall of the isolation plate. A breathable plate is hingedly provided on one side of the outer wall of the energy storage cabinet through a hinge.

[0017] Furthermore, a restraining shell is sleeved on one side of the outer wall of the energy storage cabinet, and a booster fan is embedded in the top opening of the outer wall of the restraining shell, and the restraining shell and the isolation plate match each other.

[0018] Furthermore, a driving motor is fixedly provided on one side of the outer wall of the sealing shell, and a screw rod is fixedly provided on the output end of the driving motor, and one end of the screw rod is threadedly connected to the opening of the inner wall of the movable frame.

[0019] Furthermore, lifting rods are fixedly provided at the top corners of the outer wall of the liquid cooling plate, and an extrusion spring is fixedly provided at the top of the outer wall of the lifting rod, and the lifting rod is slidably embedded in the inner wall of the sealing shell, and one end of the extrusion spring is embedded in the inner wall of the sealing shell.

[0020] Furthermore, a bolt is fixedly provided at the center of the top of the outer wall of the lifting rod, and a nut is threadedly connected to the outer wall of the bolt.

[0021] Furthermore, a honeycomb panel is fixedly provided on one side of the outer wall of the movable plate, and the honeycomb panel and the sealing shell match each other.

[0022] Furthermore, the input end of the nozzle is connected to an external thermal paste supply device through a hose.

[0023] Furthermore, the delivery hole is connected to the sealing shell through a telescopic silicone tube, and the liquid cooling plate is connected to the liquid cooling supply device through a hose.

[0024] A method for using a battery heat dissipation device for lithium iron phosphate battery energy storage, applied to any one of the above-mentioned battery heat dissipation devices for lithium iron phosphate battery energy storage, comprises the following steps:

[0025] S1. Deploy the energy storage cabinet to the designated work location and then refurbish it using power batteries retired from new energy vehicles to ensure the cleanliness of its outer wall;

[0026] S2. Open the ventilation plate and select the corresponding lifting plate. Driven by the drag reduction wheel, the lifting plate moves inside the guide rail, lowering the corresponding lifting plate to a height convenient for operation. Use the lifting device to lift the battery pack to one side of the outer wall of the energy storage cabinet. Pull the movable plate and limit the movable plate with the limiting groove. Then, use the groove at the top center of the outer wall of the movable plate to complete the storage of the energy storage battery and fix the energy storage battery. Then push the movable plate so that the movable plate returns to the center of the lifting plate and pull the lifting plate. The actual lifting plate rises to the designated working position, ensuring that the sealing shell is flush with the corresponding delivery hole to ensure smooth flow of cooling airflow. Start the telescopic cylinder. Under the action of the return spring, use the tooth to move on the constraint rod to complete the meshing of the tooth and rack to ensure the stable positioning of the lifting plate.

[0027] S3. Start the drive motor to rotate the screw, which moves the movable frame inside the sealed shell. The support spring drives the rotating frame to generate torque. Then, the coating roller is used to roll the thermal paste injected by the nozzle on the top of the outer wall of the energy storage battery to avoid gaps in the liquid cooling plate, which would cause a decrease in thermal conductivity. After the movable frame is reset, the nut is loosened, so that the liquid cooling plate is squeezed against the energy storage battery under the action of the squeezing spring, completing heat conduction through the thermal paste.

[0028] S4. When the heat generated by the energy storage battery is not large, the boost fan is started, and the air flow enters the delivery hole through the constraint shell, so that the flow channel enters the interior of the sealed shell, and the cooling air flow is used to complete the heat exchange, thereby reducing the heat generated by the energy storage battery. The hot air flow is then discharged through the honeycomb panel and the hot air flow is discharged through the breathable panel.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] (1) A combination of liquid cooling plate and thermal paste is used to ensure that the energy storage battery can obtain effective heat conduction and heat dissipation. The liquid cooling plate is connected to the liquid cooling supply device through a hose, which can provide continuous cooling effect. A booster fan and a breathable plate are set up to increase the flow of air when needed, further improving the heat dissipation efficiency.

[0031] (2) The design of the lifting assembly enables the energy storage battery to be easily placed in and taken out. At the same time, the lifting plate can move on the guide rail to facilitate position adjustment. Through the action of the telescopic cylinder and the return spring, the latch can engage with the rack to ensure the stable positioning of the lifting plate.

[0032] (3) The driving motor drives the screw to rotate, and the movable frame can move inside the sealed shell, thereby driving the rotating frame and the coating roller to roll the thermal paste on the outer wall of the energy storage battery. The design of the support spring enables the rotating frame to generate torque, ensuring that the thermal paste can be evenly coated on the outer wall of the energy storage battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A perspective view of the present invention;

[0034] Figure 2 It is a partial half-cut perspective view of the present invention;

[0035] Figure 3 A perspective view of a honeycomb panel according to the present invention;

[0036] Figure 4 A perspective view of an isolation panel according to the present invention;

[0037] Figure 5 is a perspective view of the guide rail of the present invention;

[0038] Figure 6 It is an enlarged schematic diagram of A of the present invention;

[0039] Figure 7 A perspective view of a movable plate of the present invention;

[0040] Figure 8 A perspective view of a mobile rack according to the present invention;

[0041] Figure 9 It is a three-dimensional diagram of the sealing shell of the present invention.

[0042] Markings in the figure: 1. Energy storage cabinet; 2. Lifting plate; 3. Honeycomb panel; 4. Guide rail; 5. Rack; 6. Moving plate; 7. Constraint rod; 8. Telescopic cylinder; 9. Gear; 10. Return spring; 11. Sealing shell; 12. Liquid cooling plate; 13. Driving motor; 14. Screw; 15. Moving frame; 16. Limit rod; 17. Rotating frame; 18. Coating roller; 19. Nozzle; 20. Support spring; 21. Lifting rod; 22. Extrusion spring; 23. Bolt; 24. Nut; 101. Breathable plate; 102. Constraint shell; 103. Booster fan; 104. Isolation plate; 105. Delivery hole; 201. Limiting groove; 202. Drag reduction wheel. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Example 1

[0045] Reference Figure 1 - Figure 9 : A battery heat dissipation device and method for lithium iron phosphate battery energy storage, comprising:

[0046] Energy storage cabinet 1;

[0047] The lifting assembly is arranged on the inner wall of the energy storage cabinet 1, wherein: the lifting assembly includes a lifting plate 2, a guide rail 4, a rack 5, a constraint rod 7, a telescopic cylinder 8, a latch 9, a return spring 10 and a drag reduction wheel 202, the drag reduction wheel 202 is rotatably inserted into the inner wall groove of the lifting plate 2, the guide rail 4 and the rack 5 are fixedly arranged on the inner wall of the energy storage cabinet 1, the drag reduction wheel 202 is rotatably embedded in the inner wall of the guide rail 4, the constraint rod 7 is fixedly arranged on the two side corners of the outer wall of the lifting plate 2, the telescopic cylinder 8 is fixedly arranged on the two side corners of the outer wall of the lifting plate 2, the latch 9 is fixedly arranged at the output end of the telescopic cylinder 8, the return spring 10 is sleeved on the outer wall of the output end of the telescopic cylinder 8, the rack 5 and the latch 9 match each other, the heat dissipation assembly is arranged on the inner wall of the energy storage cabinet 1, wherein: the heat dissipation The thermal component includes a movable plate 6, a limiting groove 201, a sealing shell 11, a liquid cooling plate 12, a movable frame 15, a limiting rod 16, a rotating frame 17, a coating roller 18, a nozzle 19 and a support spring 20. The limiting groove 201 is opened on both sides of the inner wall of the lifting plate 2, the movable plate 6 is slidably embedded in the inner wall of the limiting groove 201, the sealing shell 11 is fixedly set on the outer wall of the lifting plate 2, the liquid cooling plate 12 is slidably embedded in the inner wall of the sealing shell 11, the movable frame 15 is slidably embedded in the inner wall of the sealing shell 11, the limiting rod 16 is embedded in the inner wall of one end of the movable frame 15, the rotating frame 17 is rotatably sleeved on the outer wall of the limiting rod 16, the coating roller 18 is rotatably inserted into the inner wall opening of one end of the rotating frame 17, and the nozzle 19 is fixedly set on one side of the outer wall of the rotating frame 17 One end of the support spring 20 is fixedly arranged at one side of the outer wall of the rotating frame 17, and the other end of the support spring 20 is fixedly arranged at the outer wall of the mobile frame 15. The energy storage cabinet 1 is deployed to the designated working position, and then the power battery discarded by the new energy vehicle is refurbished to ensure the cleanliness of its outer wall. The air permeable plate 101 is opened, and the corresponding lifting plate 2 is selected. The lifting plate 2 is driven by the drag reduction wheel 202 and moves inside the guide rail 4, so that the corresponding lifting plate 2 is lowered to a height convenient for operation. The battery pack is hoisted to one side of the outer wall of the energy storage cabinet 1 by using the lifting device, and the mobile plate 6 is pulled and limited by the limiting groove 201. Then, the groove at the center of the top of the outer wall of the mobile plate 6 is used to complete the storage of the energy storage battery. The energy storage battery is fixed The lifting plate 2 is fixed, and then the movable plate 6 is pushed to return the movable plate 6 to the center of the lifting plate 2, and the lifting plate 2 is pulled. The actual lifting plate 2 rises to the specified working position, ensuring that the sealing shell 11 is flush with the corresponding delivery hole 105 to ensure the smooth flow of the cooling airflow, and the telescopic cylinder 8 is started. Under the action of the return spring 10, the latch 9 is used to move on the constraint rod 7 to complete the engagement of the latch 9 and the rack 5 to ensure the stable positioning of the lifting plate 2, and the drive motor 13 is started to drive the screw 14 to rotate, and the movable frame 15 moves inside the sealing shell 11 through the supporting spring 20, which drives the rotating frame 17 to generate torque, and then the thermal paste injected by the nozzle 19 is rolled on the top of the outer wall of the energy storage battery through the coating roller 18 to avoid gaps in the liquid cooling plate 12.The thermal conductivity decreases, and after the movable frame 15 is reset, the nut 24 is loosened, allowing the extrusion spring 22 to drive the liquid cooling plate 12 to squeeze the energy storage battery, completing heat conduction through the thermal paste. When the heat generation of the energy storage battery is not large, the booster fan 103 is started, and the air flows through the restraining shell 102 into the delivery hole 105, allowing the flow channel to enter the interior of the sealed shell 11. The cooling airflow completes heat exchange, reducing the heat generated by the energy storage battery. The hot air flow is then discharged through the honeycomb panel 3 and then through the breathable plate 101.

[0048] Reference Figure 1 - Figure 9 : An isolation plate 104 is fixedly provided on one side of the outer wall of the energy storage cabinet 1, and a delivery hole 105 is opened on one side of the outer wall of the isolation plate 104. A breathable plate 101 is hingedly provided on one side of the outer wall of the energy storage cabinet 1. A constraint shell 102 is sleeved on one side of the outer wall of the energy storage cabinet 1, and a booster fan 103 is embedded in the top opening of the outer wall of the constraint shell 102. The booster fan 103 can deliver clean air to the interior of the constraint shell 102, and the constraint shell 102 and the isolation plate 104 match each other. A drive motor 13 is fixedly provided on one side of the outer wall of the sealing shell 11, and the output end of the drive motor 13 is fixedly provided. A screw rod 14 is provided, one end of which is threadedly connected to the opening of the inner wall of the movable frame 15, and a lifting rod 21 is fixedly provided at the top corners of the outer wall of the liquid cooling plate 12, and an extrusion spring 22 is fixedly provided on the top of the outer wall of the lifting rod 21. The extrusion spring 22 can drive the liquid cooling plate 12 to descend, and improve the heat exchange efficiency through the thermal paste, and the lifting rod 21 is slidably embedded in the inner wall of the sealing shell 11, one end of the extrusion spring 22 is embedded in the inner wall of the sealing shell 11, and a bolt 23 is fixedly provided at the center of the top outer wall of the lifting rod 21, and the outer wall of the bolt 23 is threadedly connected with a nut 24.

[0049] Reference Figure 1 - Figure 9 : A honeycomb panel 3 is fixedly provided on one side of the outer wall of the movable plate 6, and the honeycomb panel 3 matches the sealing shell 11. The input end of the nozzle 19 is connected to the external thermal paste supply device through a hose. The sealable nozzle 19 can ensure the sealing of the thermal paste and avoid the solidification of the thermal paste. The delivery hole 105 is connected to the sealing shell 11 through a telescopic silicone tube, which can ensure the stable flow of the cooling airflow. The liquid cooling plate 12 is connected to the liquid cooling supply device through a hose.

[0050] Reference Figure 1 - Figure 9 : A method for using a battery heat dissipation device for lithium iron phosphate battery energy storage, which is applied to any one of the above-mentioned battery heat dissipation devices for lithium iron phosphate battery energy storage, comprising the following steps:

[0051] S1. Deploy the energy storage cabinet 1 to the designated work location and then refurbish it using power batteries retired from new energy vehicles to ensure the cleanliness of its outer wall;

[0052] S2, open the ventilation plate 101, select the corresponding lifting plate 2, and the lifting plate 2 is driven by the drag reduction wheel 202 to move inside the guide rail 4, so that the corresponding lifting plate 2 is lowered to a height convenient for operation. The battery pack is hoisted to one side of the outer wall of the energy storage cabinet 1 by using the lifting device, and the movable plate 6 is pulled to limit the movable plate 6 by the limiting groove 201. Then, the groove at the top center of the outer wall of the movable plate 6 is used to complete the storage of the energy storage battery and fix the energy storage battery. Then, the movable plate 6 is pushed so that the movable plate 6 returns to the center of the lifting plate 2, and the lifting plate 2 is pulled. The actual lifting plate 2 rises to the designated working position, ensuring that the sealing shell 11 is flush with the corresponding delivery hole 105 to ensure smooth flow of cooling airflow, and the telescopic cylinder 8 is started. Under the action of the return spring 10, the tooth 9 is moved on the constraint rod 7 to complete the engagement of the tooth 9 and the rack 5 to ensure the stable positioning of the lifting plate 2;

[0053] S3. Start the drive motor 13 to rotate the screw 14, which moves the movable frame 15 inside the sealed shell 11. The support spring 20 drives the rotating frame 17 to generate a torque. Then, the coating roller 18 rolls the thermal paste injected by the nozzle 19 on the top of the outer wall of the energy storage battery to avoid gaps in the liquid cooling plate 12 and reduce the thermal conductivity. After the movable frame 15 is reset, the nut 24 is loosened, so that the liquid cooling plate 12 is squeezed against the energy storage battery under the action of the squeezing spring 22, and heat conduction is completed through the thermal paste.

[0054] S4. When the heat generated by the energy storage battery is not large, the booster fan 103 is started, and the air flows through the restraining shell 102 into the delivery hole 105, so that the flow channel enters the interior of the sealed shell 11, and the cooling air flow is used to complete the heat exchange, thereby reducing the heat generated by the energy storage battery. The hot air flow is then discharged through the honeycomb panel 3 and the hot air flow is discharged through the breathable plate 101.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery heat dissipation device for lithium iron phosphate battery energy storage, characterized in that: include: Energy storage cabinet (1); A lifting assembly is provided at the inner wall of the energy storage cabinet (1), wherein: the lifting assembly comprises a lifting plate (2), a guide rail (4), a rack (5), a constraint rod (7), a telescopic cylinder (8), a latch (9), a return spring (10) and a drag reduction wheel (202); the drag reduction wheel (202) is rotatably inserted into the inner wall groove of the lifting plate (2); the guide rail (4) and the rack (5) are both fixedly provided at the inner wall of the energy storage cabinet (1); the drag reduction wheel (202) is rotatably embedded in the inner wall of the guide rail (4); the constraint rod (7) is fixedly provided at the two side corners of the outer wall of the lifting plate (2); the telescopic cylinder (8) is fixedly provided at the two side corners of the outer wall of the lifting plate (2); the latch (9) is fixedly provided at the output end of the telescopic cylinder (8); the return spring (10) is sleeved on the outer wall of the output end of the telescopic cylinder (8); and the rack (5) and the latch (9) match each other; A heat dissipation component is provided at the inner wall of the energy storage cabinet (1), wherein: the heat dissipation component includes a movable plate (6), a limiting groove (201), a sealing shell (11), a liquid cooling plate (12), a movable frame (15), a limiting rod (16), a rotating frame (17), a coating roller (18), a nozzle (19) and a supporting spring (20), the limiting groove (201) is provided at both sides of the inner wall of the lifting plate (2), the movable plate (6) is slidably embedded in the inner wall of the limiting groove (201), the sealing shell (11) is fixedly provided at the outer wall of the lifting plate (2), the liquid cooling plate (12) is slidably embedded in the sealing shell (1 1), the movable frame (15) is slidably embedded in the inner wall of the sealing shell (11), the limiting rod (16) is embedded in the inner wall of one end of the movable frame (15), the rotating frame (17) is rotatably sleeved on the outer wall of the limiting rod (16), the coating roller (18) is rotatably inserted into the inner wall opening of one end of the rotating frame (17), the spray head (19) is fixedly arranged on one side of the outer wall of the rotating frame (17), one end of the support spring (20) is fixedly arranged on one side of the outer wall of the rotating frame (17), and the other end of the support spring (20) is fixedly arranged on the outer wall of the movable frame (15); A driving motor (13) is fixedly provided on one side of the outer wall of the sealing shell (11), and a screw rod (14) is fixedly provided on the output end of the driving motor (13), and one end of the screw rod (14) is threadedly connected to an opening on the inner wall of the movable frame (15); The input end of the nozzle (19) is connected to an external thermal paste supply device via a hose.

2. The heat dissipation device for lithium iron phosphate battery energy storage according to claim 1, characterized in that: An isolation plate (104) is fixedly provided on one side of the outer wall of the energy storage cabinet (1), and a delivery hole (105) is opened on one side of the outer wall of the isolation plate (104). A ventilation plate (101) is hingedly provided on one side of the outer wall of the energy storage cabinet (1).

3. A battery heat dissipation device for lithium iron phosphate battery energy storage according to claim 2, characterized in that: A restraining shell (102) is sleeved on one side of the outer wall of the energy storage cabinet (1), and a booster fan (103) is embedded in the top opening of the outer wall of the restraining shell (102), and the restraining shell (102) and the isolation plate (104) match each other.

4. A battery heat dissipation device for lithium iron phosphate battery energy storage according to claim 3, characterized in that: A lifting rod (21) is fixedly provided at the top corner of the outer wall of the liquid cooling plate (12), and an extrusion spring (22) is fixedly provided at the top of the outer wall of the lifting rod (21), and the lifting rod (21) is slidably embedded in the inner wall of the sealing shell (11), and one end of the extrusion spring (22) is embedded in the inner wall of the sealing shell (11).

5. The heat dissipation device for lithium iron phosphate battery energy storage according to claim 4, characterized in that: A bolt (23) is fixedly provided at the center of the top of the outer wall of the lifting rod (21), and a nut (24) is threadedly connected to the outer wall of the bolt (23).

6. A battery heat dissipation device for lithium iron phosphate battery energy storage according to claim 5, characterized in that: A honeycomb panel (3) is fixedly provided on one side of the outer wall of the movable plate (6), and the honeycomb panel (3) and the sealing shell (11) match each other.

7. A battery heat dissipation device for lithium iron phosphate battery energy storage according to claim 6, characterized in that: The delivery hole (105) is connected to the sealing shell (11) via a telescopic silicone tube, and the liquid cooling plate (12) is connected to the liquid cooling supply device via a hose.

8. A method for using a battery heat dissipation device for lithium iron phosphate battery energy storage, characterized in that: A battery heat dissipation device for lithium iron phosphate battery energy storage as claimed in any one of claims 1 to 7, comprising the following steps: S1. Deploy the energy storage cabinet (1) to the designated work location, and then refurbish it using power batteries discarded from new energy vehicles to ensure the cleanliness of its outer wall; S2, open the ventilation plate (101), select the corresponding lifting plate (2), and the lifting plate (2) is driven by the drag reduction wheel (202) to move inside the guide rail (4), so that the corresponding lifting plate (2) is lowered to a height convenient for operation. The battery pack is hoisted to one side of the outer wall of the energy storage cabinet (1) by using the lifting device, and the movable plate (6) is pulled to limit the movable plate (6) through the limiting groove (201). Then, the groove at the center of the top of the outer wall of the movable plate (6) is used to complete the storage of the energy storage battery. The energy storage battery is placed in the storage cabinet (1). Fix, then push the moving plate (6) so that the moving plate (6) returns to the center of the lifting plate (2), pull the lifting plate (2), and actually lift the lifting plate (2) to the designated working position, ensuring that the sealing shell (11) is flush with the corresponding delivery hole (105), ensuring the smooth flow of the cooling air flow, start the telescopic cylinder (8), and under the action of the return spring (10), use the latch (9) to move on the constraint rod (7), complete the engagement of the latch (9) and the rack (5), and ensure the stable positioning of the lifting plate (2); S3, start the driving motor (13), drive the screw (14) to rotate, move the movable frame (15) inside the sealing shell (11), drive the rotating frame (17) to generate torque through the support spring (20), and then roll the thermal paste injected by the nozzle (19) on the top of the outer wall of the energy storage battery through the coating roller (18) to avoid the gap of the liquid cooling plate (12) and the decrease of thermal conductivity. After that, after the movable frame (15) is reset, loosen the nut (24), so that under the action of the extrusion spring (22), the liquid cooling plate (12) is driven to squeeze the energy storage battery, and heat conduction is completed through the thermal paste; S4. When the heat generated by the energy storage battery is not large, the booster fan (103) is started, and the airflow enters the delivery hole (105) through the constraint shell (102), so that the flow channel enters the interior of the sealing shell (11), and the cooling airflow is used to complete the heat exchange, thereby reducing the heat generated by the energy storage battery. The hot airflow is then discharged through the honeycomb panel (3) and the hot airflow is discharged through the breathable plate (101).

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