Thermal Management System and Energy Storage System

Abstract

The present invention provides a thermal management system and an energy storage system, including a thermal management box. A base is fixedly arranged inside the thermal management box, and a cross-shaped hollow water storage plate is embedded in the base. The water inside the cross-shaped hollow water storage plate can be drawn and flow. A battery module is placed in the card slot. The hollow water pipe is communicated with the cross-shaped hollow water storage plate and is attached to the bottom of the battery module. Ventilation holes are provided at the edges of the cross-shaped hollow water storage plate far from the air pump and the exhaust pipe. The buffer pipe is communicated with the elastic water bag. Hygroscopic particles are stored inside the storage box, and an air inlet pipe and an air outlet pipe are respectively communicated and arranged on both sides of the storage box. The present invention provides a thermal management system and an energy storage system, which can effectively combine air cooling and water cooling, and use water cooling to improve the cooling effect of air cooling and ensure the dryness of air cooling, which can not only improve efficiency but also maintain a dry state, making the system operate more safely.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage temperature management, and particularly to a thermal management system and an energy storage system. Background Technique

[0002] An energy storage system usually includes a thermal management system, which is used for thermal management of battery clusters in the energy storage system. Currently, existing thermal management systems generally include an air duct connected between an air conditioner and the battery clusters. Air is sent to the battery clusters through the air conditioner and the air duct, and heat exchange is carried out with the battery clusters to achieve thermal management of the battery clusters.

[0003] In the prior art, a thermal management system and an energy storage system with the publication number of "CN216928719U". This thermal management system is suitable for thermal management of the energy storage system. The thermal management system includes: an air duct and an adjusting device; the air duct communicates with the air source of the thermal management system and each battery cluster unit. At least part of the area on the side of the air duct close to the battery cluster unit is a soft structure, and the soft structure has a deformation amount; the adjusting device is arranged in contact with the outer side of the soft structure, and the adjusting device is used to drive the soft structure to generate deformation so as to adjust the air output of the air duct. This thermal management system and energy storage system enable the air output of the air duct to be adjustable, which helps to dynamically adjust the air output of the air duct according to the temperature of each battery cluster unit, so as to balance the temperature of each battery cluster unit, reduce the current difference of each battery cluster unit, thereby improving the consistency of the state of charge of each battery cluster unit in the energy storage system and enhancing the stability and reliability of the energy storage system.

[0004] However, in the process of its use, there are still obvious defects: 1. The above device mainly uses the air-cooling method to cool the battery clusters. However, the air-cooling speed is slow, and it cannot quickly cool the battery clusters, and it is not suitable for high-temperature environments; 2. The use environment of the battery clusters needs to be kept dry. When the above device uses a blowing device for cooling, if the environmental humidity is high and there is water vapor in the air flow, it is easy to damage the battery clusters. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a thermal management system and an energy storage system to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A thermal management system includes a thermal management box. Inside the thermal management box, a base is fixedly arranged. A cross-shaped hollow water storage plate is embedded in the base. The water inside the cross-shaped hollow water storage plate can be drawn and flow. A card slot is formed on the base, and a battery module is placed in the card slot. A plurality of hollow water pipes are embedded in the base. The hollow water pipes communicate with the cross-shaped hollow water storage plate, and the hollow water pipes are attached to the bottom of the battery module. An air pump and an exhaust pipe are arranged on the thermal management box. Ventilation holes are formed at the edges of the cross-shaped hollow water storage plate far from the air pump and the exhaust pipe.

[0008] A buffer pipe is communicatively arranged on the hollow water pipe close to the air pump. The buffer pipe communicates with an elastic water bag. The elastic water bag is arranged in the inner cavity surrounded by a frame plate. A compression spring is connected to the side wall of the frame plate. A push plate is connected to the compression spring. A rack is fixedly arranged on the side of the push plate close to the compression spring. The rack movably penetrates through the frame plate, and a gear is meshed with the rack. A transmission rod is fixedly penetrated through the center of the gear. A plurality of rotating blades are fixedly arranged on the side of the transmission rod close to the ventilation hole. A cam is fixedly sleeved on the transmission rod. A storage box is fixedly arranged inside the thermal management box. A movable plate is movably arranged in the storage box. A connecting spring is arranged between the movable plate and the inner wall of the storage box. An extension rod is fixedly arranged on the side of the movable plate close to the connecting spring. A cross plate is fixedly arranged at the end of the extension rod. Hygroscopic particles are stored inside the storage box. An air inlet pipe and an air outlet pipe are respectively communicatively arranged on both sides of the storage box. A first one-way valve is arranged in the air inlet pipe, and an air collecting hood is fixedly arranged at the end of the air inlet pipe. A second one-way valve is arranged in the air outlet pipe.

[0009] Preferably, a cross-shaped piston pipe is communicatively arranged on the cross-shaped hollow water storage plate. A cross-shaped piston plate is movably arranged in the cross-shaped piston pipe. The cross-shaped piston plate is fixed to the bottom of a lifting power source through a connecting shaft.

[0010] Preferably, a heating sheet is fixedly arranged inside the cross-shaped hollow water storage plate.

[0011] Preferably, positioning rods are fixedly arranged on the side wall of the card slot, and the battery module is placed between the positioning rods.

[0012] Preferably, a moisture absorption pad is arranged in the exhaust pipe.

[0013] Preferably, the end of the transmission rod is arranged in a bearing seat, and the bearing seat is fixedly arranged inside the thermal management box.

[0014] An energy storage system includes the above-mentioned thermal management system.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. An air pump is provided on the thermal management box of the present invention, and a cross-shaped hollow water storage plate is provided inside the thermal management box, which can realize the combination of air cooling and water cooling, and thus can quickly cool the battery module;

[0017] 2. The water inside the cross-shaped hollow water storage plate of the present invention can be drawn and flowed, and ventilation holes are provided at the edges of the cross-shaped hollow water storage plate far from the air pump and the exhaust pipe. Therefore, when the air flow passes through the ventilation holes, the cooling liquid can conduct heat, and then cool the air flow, so that the water cooling can promote the effect of air cooling and improve the cooling efficiency;

[0018] 3. During the process of the water inside the cross-shaped hollow water storage plate of the present invention being drawn and flowed, the elastic water bag will expand and contract. Furthermore, air can be continuously pumped in and the introduced gas can be dried to avoid damage to the battery module caused by the carried moisture, and at the same time, the rotating blade is driven to rotate to promote the flow and heat dissipation of the air flow, so that a dry environmental state can be maintained inside the thermal management box, effectively protecting the internal devices.

[0019] The present invention provides a thermal management system and an energy storage system, which can effectively combine air cooling and water cooling, and use water cooling to improve the cooling effect of air cooling and ensure the dryness of air cooling. It can not only improve the efficiency but also maintain a dry state, making the system operation safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top-sectional view of the overall structure of the present invention;

[0021] Figure 2 is the Figure 1 enlarged view of part A in.

[0022] In the figure: 1 thermal management box, 2 base, 201 card slot, 3 cross-shaped hollow water storage plate, 301 ventilation hole, 4 cross-shaped piston tube, 5 cross-shaped piston plate, 6 coupling shaft, 7 heating sheet, 8 positioning rod, 9 battery module, 10 hollow water pipe, 11 air pump, 12 exhaust pipe, 13 moisture absorption pad, 14 buffer pipe, 15 elastic water bag, 16 frame plate, 17 compression spring, 18 push plate, 19 rack, 20 gear, 21 transmission rod, 22 bearing seat, 23 rotating blade, 24 cam, 25 storage box, 26 movable plate, 27 connecting spring, 28 extension rod, 29 cross plate, 30 moisture absorption particles, 31 air inlet pipe, 32 air outlet pipe, 33 first one-way valve, 34 air collecting hood, 35 second one-way valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 to 2 , the present invention provides a technical solution:

[0025] Embodiment 1:

[0026] A thermal management system includes a thermal management box 1. Inside the thermal management box 1, a base 2 is fixedly arranged. In this embodiment, the base 2 is in a cuboid structure. A cross-shaped hollow water storage plate 3 is embedded in the base 2. The cross-shaped hollow water storage plate 3 is filled with a cooling liquid. The water inside the cross-shaped hollow water storage plate 3 can be pumped and flowed, so that the water flow continuously mixes and flows, avoiding overheating due to local thermal contact. A card slot 201 is opened on the base 2, and a battery module 9 is placed in the card slot 201. A plurality of hollow water pipes 10 are embedded in the base 2. The hollow water pipes 10 communicate with the cross-shaped hollow water storage plate 3. Therefore, the inside of the hollow water pipes 10 is also filled with the cooling liquid, and the hollow water pipes 10 are attached to the bottom of the battery module 9. Therefore, the heat generated by the battery module 9 will be transferred to the cooling liquid in real time through the hollow water pipes 10 to achieve heat conduction and rapid cooling. Also, because the cooling liquid can flow, it avoids the drawback of the liquid temperature rising caused by static long-term contact. An air pump 11 and an exhaust pipe 12 are arranged on the thermal management box 1. After the air pump 11 is turned on, it can introduce air flow into the thermal management box 1 to cool the battery module 9 by air cooling. The air flow will circulate inside the thermal management box 1 for one circle and finally be discharged from the exhaust pipe 12. Ventilation holes 301 are opened at the edges of the cross-shaped hollow water storage plate 3 far from the air pump 11 and the exhaust pipe 12. Therefore, when the air flow flows inside the thermal management box 1, it will pass through these ventilation holes 301, and the liquid inside the cross-shaped hollow water storage plate 3 will conduct heat with the air flow, thereby further cooling the gas introduced from the outside and making the air cooling effect better.

[0027] A buffer pipe 14 is connected and arranged on the hollow water pipe 10 near the air pump 11. The buffer pipe 14 is connected to an elastic water bag 15. The elastic water bag 15 has good stretching elasticity. The elastic water bag 15 is arranged in the inner cavity surrounded by the frame plate 16. The frame plate 16 is fixedly arranged in the inner cavity of the thermal management box 1. A compression spring 17 is connected and arranged on the side wall of the frame plate 16. A push plate 18 is connected and arranged on the compression spring 17. The push plate 18 can move smoothly along the inner wall of the frame plate 16. A rack 19 is fixedly arranged on the side of the push plate 18 close to the compression spring 17. The rack 19 movably penetrates through the frame plate 16, and a gear 20 is meshed on the rack 19. Therefore, when the rack 19 moves, the gear 20 can be driven to rotate. A transmission rod 21 is fixedly penetrated through the center of the gear 20. When the gear 20 rotates, the transmission rod 21 will be driven to rotate accordingly. A plurality of rotating blades 23 are fixedly arranged on the side of the transmission rod 21 close to the ventilation hole 301. A cam 24 is fixedly sleeved on the transmission rod 21. Thus, the transmission rod 21 can drive the rotating blades 23 and the cam 24 to rotate simultaneously. When the rotating blades 23 rotate, they can promote the flow and mixing of the gas, which can not only make the temperature distribution of the gas more uniform, avoid the situation of too large local temperature difference, but also promote the flow of the gas. When the cam 24 rotates, it will intermittently push the cross plate 29 to realize the pumping of the dry gas. A storage box 25 is fixedly arranged inside the thermal management box 1. A movable plate 26 is movably arranged in the storage box 25. The movable plate 26 can move along the inner wall of the storage box 25. A connecting spring 27 is arranged between the movable plate 26 and the inner wall of the storage box 25. An extension rod 28 is fixedly arranged on the side of the movable plate 26 close to the connecting spring 27. A cross plate 29 is fixedly arranged at the end of the extension rod 28. Hygroscopic particles 30 are stored inside the storage box 25. The hygroscopic particles 30 can absorb the water vapor in the air, thereby making the gas used for air cooling drier and effectively protecting the battery module 9. An air inlet pipe 31 and an air outlet pipe 32 are respectively connected and arranged on both sides of the storage box 25. A first one-way valve 33 is arranged in the air inlet pipe 31. The setting of the first one-way valve 33 makes the gas can only enter the inside of the storage box 25 through the air inlet pipe 31 and cannot flow backward. And a wind collecting cover 34 is fixedly arranged at the end of the air inlet pipe 31. The setting of the wind collecting cover 34 can better collect and introduce the gas. A second one-way valve 35 is arranged in the air outlet pipe 32. The setting of the second one-way valve 35 makes the gas in the storage box 25 can only flow out through the air outlet pipe 32 and cannot flow backward. Thus, the one-way flow of the gas is realized, ensuring that the gas can be effectively dried and improving the safety of air cooling.

[0028] Embodiment 2:

[0029] On the basis of the above-mentioned first embodiment, this embodiment further discloses and defines the following: a cross-shaped hollow water storage plate 3 is communicatively provided with a cross-shaped piston tube 4. The cross-shaped piston tube 4 is perpendicular to the cross-shaped hollow water storage plate 3, and its height can be set as required. A cross-shaped piston plate 5 is movably arranged in the cross-shaped piston tube 4. The cross-shaped piston plate 5 is fixed to the bottom of the lifting power source through a connecting shaft 6. When the lifting power source drives the cross-shaped piston plate 5 to move up and down through the connecting shaft 6, the cross-shaped piston plate 5 will move along the inner wall of the cross-shaped piston tube 4, thereby causing the cooling liquid inside the cross-shaped piston tube 4 to be drawn and flow, avoiding the phenomenon that the liquid closer to the battery module 9 heats up due to long-term heat conduction in a static environment, so that the device can maintain a stable cooling state for a long time.

[0030] Embodiment Three:

[0031] On the basis of the above-mentioned first or second embodiment, this embodiment adds the following structure: a heating sheet 7 is fixedly arranged inside the cross-shaped hollow water storage plate 3. This kind of improvement is mainly applicable to the working condition in a low-temperature environment. At this time, in order to avoid the ambient temperature of the battery module 9 being too low, the heating sheet 7 can be turned on, and then heat conduction is carried out through the liquid inside the cross-shaped hollow water storage plate 3, so that the battery module 9 can maintain a relatively stable temperature state and be more durable.

[0032] Embodiment Four:

[0033] A thermal management system includes a thermal management box 1. Inside the thermal management box 1, a base 2 is fixedly arranged. In this embodiment, the base 2 is in a cuboid structure. A cross-shaped hollow water storage plate 3 is embedded in the base 2. The cross-shaped hollow water storage plate 3 is filled with a cooling liquid. The water inside the cross-shaped hollow water storage plate 3 can be drawn and flow, so that the water flow continuously mixes and flows, avoiding overheating due to local thermal contact. A card slot 201 is formed on the base 2. A positioning rod 8 is fixedly arranged on the side wall of the card slot 201. The battery module 9 is placed between the positioning rods 8. The setting of the positioning rods 8 can prevent the battery module 9 from directly contacting the side wall of the card slot 201, and thus leave a certain space between the two, facilitating the automatic heat dissipation of the battery module 9. The battery module 9 is placed in the card slot 201. A plurality of hollow water pipes 10 are embedded in the base 2. The hollow water pipes 10 communicate with the cross-shaped hollow water storage plate 3. Therefore, the inside of the hollow water pipes 10 is also filled with a cooling liquid, and the hollow water pipes 10 are attached to the bottom of the battery module 9. Therefore, the heat generated by the battery module 9 will be transferred to the cooling liquid in real time through the hollow water pipes 10 to achieve heat conduction and rapid cooling. Also, because the cooling liquid can flow, the drawback of the liquid temperature rising caused by static long-term contact is avoided. An air pump 11 and an exhaust pipe 12 are arranged on the thermal management box 1. After the air pump 11 is turned on, it can introduce air flow into the thermal management box 1 to cool the battery module 9 by air cooling. The air flow will circulate inside the thermal management box 1 for one circle and finally be discharged from the exhaust pipe 12. A moisture absorption pad 13 is arranged in the exhaust pipe 12. The moisture absorption pad 13 can absorb the water vapor in the gas, preventing the water vapor in the external environment from reversely entering the inside of the thermal management box 1 from the exhaust pipe 12. Ventilation holes 301 are formed at the edges of the cross-shaped hollow water storage plate 3 far from the air pump 11 and the exhaust pipe 12. Therefore, when the air flow flows inside the thermal management box 1, it will pass through these ventilation holes 301, and the liquid inside the cross-shaped hollow water storage plate 3 will conduct heat with the air flow, further cooling the gas introduced from the outside and making the air cooling effect better.

[0034] A buffer tube 14 is connected to the hollow water pipe 10 near the air pump 11. The buffer tube 14 is connected to the elastic water bag 15. The elastic water bag 15 has good stretching elasticity. The elastic water bag 15 is arranged in the inner cavity surrounded by the frame plate 16. The frame plate 16 is fixedly arranged in the inner cavity of the thermal management box 1. A compression spring 17 is connected to the side wall of the frame plate 16. A push plate 18 is connected to the compression spring 17. The push plate 18 can move smoothly along the inner wall of the frame plate 16. A rack 19 is fixedly arranged on the side of the push plate 18 close to the compression spring 17. The rack 19 movably penetrates through the frame plate 16, and a gear 20 is meshed with the rack 19. Therefore, when the rack 19 moves, the gear 20 can be driven to rotate. A transmission rod 21 is fixedly penetrated through the center of the gear 20. When the gear 20 rotates, the transmission rod 21 will be driven to rotate accordingly. The end of the transmission rod 21 is arranged in the bearing seat 22. The bearing seat 22 is fixedly arranged inside the thermal management box 1. The arrangement of the bearing seat 22 makes the rotation of the transmission rod 21 smoother and more stable. A plurality of rotating blades 23 are fixedly arranged on the side of the transmission rod 21 close to the ventilation hole 301. A cam 24 is fixedly sleeved on the transmission rod 21. Thus, the transmission rod 21 can drive the rotating blades 23 and the cam 24 to rotate simultaneously. When the rotating blades 23 rotate, they can promote the flow and mixing of the gas, which can not only make the temperature distribution of the gas more uniform and avoid the situation of too large local temperature difference, but also promote the flow of the gas. When the cam 24 rotates, it will intermittently push the cross plate 29 to realize the pumping of the dry gas. A storage box 25 is fixedly arranged inside the thermal management box 1. A movable plate 26 is movably arranged in the storage box 25. The movable plate 26 can move along the inner wall of the storage box 25. A connecting spring 27 is arranged between the movable plate 26 and the inner wall of the storage box 25. An extension rod 28 is fixedly arranged on the side of the movable plate 26 close to the connecting spring 27. A cross plate 29 is fixedly arranged at the end of the extension rod 28. Hygroscopic particles 30 are stored inside the storage box 25. The hygroscopic particles 30 can absorb the water vapor in the air, thereby making the gas used for air cooling drier and effectively protecting the battery module 9. An air inlet pipe 31 and an air outlet pipe 32 are respectively connected to both sides of the storage box 25. A first one-way valve 33 is arranged in the air inlet pipe 31. The setting of the first one-way valve 33 makes the gas can only enter the inside of the storage box 25 through the air inlet pipe 31 and cannot flow backward. And a wind collecting cover 34 is fixedly arranged at the end of the air inlet pipe 31. The setting of the wind collecting cover 34 can better collect and introduce the gas. A second one-way valve 35 is arranged in the air outlet pipe 32. The setting of the second one-way valve 35 makes the gas in the storage box 25 can only flow out through the air outlet pipe 32 and also cannot flow backward. Thus, the one-way flow of the gas is realized, ensuring that the gas can be effectively dried and improving the safety of air cooling.

[0035] An energy storage system includes the above thermal management system.

[0036] Working principle:

[0037] During use, the battery module 9 is located inside the thermal management box 1 and is respectively arranged in different card slots 201 of the base 2 to achieve independent placement.

[0038] During the use process, if it is necessary to cool down the battery module 9, there are two mutually cooperative modes of air cooling and water cooling. Specifically, when the lifting power source drives the cruciform piston plate 5 to move up and down through the coupling shaft 6, the cruciform piston plate 5 will move along the inner wall of the cruciform piston tube 4, so that the cooling liquid inside the cruciform piston tube 4 is pumped and drawn to flow, avoiding the phenomenon that the liquid closer to the battery module 9 heats up due to long-term heat conduction in a static environment, enabling the device to maintain a stable cooling state for a long time and achieving a good water cooling effect. In addition, when the cruciform piston plate 5 presses down, the liquid inside the cruciform piston tube 4 will enter the inside of the elastic water bag 15 through the buffer tube 14, causing the elastic water bag 15 to expand. The elastic water bag 15 further pushes the push plate 18, causing the push plate 18 to drive the rack 19 to move, resulting in the gear 20 driving the transmission rod 21 to rotate. A plurality of rotating blades 23 are fixedly arranged on one side of the transmission rod 21 close to the ventilation hole 301, and a cam 24 is fixedly sleeved on the transmission rod 21. Thus, the transmission rod 21 can drive the rotating blades 23 and the cam 24 to rotate simultaneously. When the cam 24 rotates, it will intermittently push the cross plate 29. The cross plate 29 drives the movable plate 26 through the extension rod 28. During the reciprocating movement of the movable plate 26, the gas in the external environment enters the inside of the storage box 25 through the air collecting hood 34 and the air inlet pipe 31, and after being dried by the moisture-absorbing particles 30, it finally discharges from the exhaust pipe 32, thereby realizing the pumping of dry gas; when the rotating blades 23 rotate, they can promote the flow and mixing of the gas, which can not only make the temperature distribution of the gas more uniform and avoid the situation of too large local temperature difference, but also promote the flow of the gas. At the same time, the air pump 11 can be turned on. At this time, the air pump 11 will introduce the gas in the external environment into the inside of the thermal management box 1. This gas will pass through the ventilation hole 301 opened on the cruciform hollow water storage plate 3, and then exchange heat with the cooling liquid inside the cruciform hollow water storage plate 3 to ensure that the air-cooled air flow is in a lower temperature state. Furthermore, the air cooling and water cooling can be effectively combined, and the water cooling can be used to improve the cooling effect of the air cooling. It can not only improve the efficiency but also maintain a dry state, making the system operation safer and the use effect better.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal management system for thermal management of an energy storage system, the thermal management system comprising a thermal management box (1), characterized in that: Inside the thermal management box (1), a base (2) is fixedly arranged. Inside the base (2), a cross-shaped hollow water storage plate (3) is embedded. The water inside the cross-shaped hollow water storage plate (3) can be pumped and flow. A card slot (201) is formed on the base (2), and a battery module (9) is placed in the card slot (201). A plurality of hollow water pipes (10) are embedded in the base (2). The hollow water pipes (10) communicate with the cross-shaped hollow water storage plate (3), and the hollow water pipes (10) are attached to the bottom of the battery module (9). An air pump (11) and an exhaust pipe (12) are arranged on the thermal management box (1). Vent holes (301) are formed at the edges of the cross-shaped hollow water storage plate (3) far from the air pump (11) and the exhaust pipe (12). A cross-shaped piston pipe (4) is communicated with the cross-shaped hollow water storage plate (3). A cross-shaped piston plate (5) is movably arranged in the cross-shaped piston pipe (4). The cross-shaped piston plate (5) is fixed to the bottom of the lifting power source through a connecting shaft (6). A buffer pipe (14) is communicated with the hollow water pipe (10) close to the air pump (11). The buffer pipe (14) communicates with an elastic water bag (15). The elastic water bag (15) is arranged in the inner cavity surrounded by a frame plate (16). A compression spring (17) is connected to the side wall of the frame plate (16). A push plate (18) is connected to the compression spring (17). A rack (19) is fixedly arranged on the side of the push plate (18) close to the compression spring (17). The rack (19) movably penetrates through the frame plate (16), and a gear (20) is meshed with the rack (19). A transmission rod (21) is fixedly penetrated through the center of the gear (20). A plurality of rotating blades (23) are fixedly arranged on the side of the transmission rod (21) close to the vent hole (301). A cam (24) is fixedly sleeved on the transmission rod (21). A storage box (25) is fixedly arranged inside the thermal management box (1). A movable plate (26) is movably arranged in the storage box (25). A connecting spring (27) is arranged between the movable plate (26) and the inner wall of the storage box (25). An extension rod (28) is fixedly arranged on the side of the movable plate (26) close to the connecting spring (27). A cross plate (29) is fixedly arranged at the end of the extension rod (28). Hygroscopic particles (30) are stored inside the storage box (25). An air inlet pipe (31) and an air outlet pipe (32) are respectively communicated with two sides of the storage box (25). A first one-way valve (33) is arranged in the air inlet pipe (31), and an air collecting hood (34) is fixedly arranged at the end of the air inlet pipe (31). A second one-way valve (35) is arranged in the air outlet pipe (32).

2. The thermal management system according to claim 1, wherein: A heating sheet (7) is fixedly arranged inside the cross-shaped hollow water storage plate (3).

3. A thermal management system according to claim 1, characterized in that: A positioning rod (8) is fixedly arranged on the side wall of the card slot (201). The battery module (9) is placed between the positioning rods (8).

4. The thermal management system according to claim 1, wherein: A moisture absorption pad (13) is provided in the exhaust pipe (12).

5. A thermal management system according to claim 1, characterized in that: The end of the transmission rod (21) is arranged in a bearing seat (22), and the bearing seat (22) is fixedly arranged inside the thermal management box (1).

6. An energy storage system, characterized in that: It includes the thermal management system according to any one of the above claims 1-5.

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