A distributed power storage system

Abstract

The application discloses a kind of distributed power energy storage systems, belong to energy technical field, including cabinet, multiple energy storage batteries are arranged at intervals in the cabinet, and the accommodating cavity is formed between two adjacent energy storage batteries, characterized by, water cooling mechanism, multiple flow guide mechanisms, multiple plugging mechanisms and driving devices are arranged in the cabinet;The plugging mechanism independently closes the air inlet channel of the accommodating cavity according to the temperature of the corresponding accommodating cavity;The driving device is used to uniformly drive each plugging mechanism to open;The application realizes autonomous closing according to the real-time temperature of each region by controlling the plugging plate;The ventilation channel can be closed in advance when the temperature drops to the conventional low-temperature region, the high-temperature region continues to ventilate and dissipate heat, cold air actively converges to the heat accumulation area, and the local heat exchange is intensified, which solves the problem of eliminating local hot spots of the battery and ensures the uniform and stable working temperature of the energy storage battery.

Description

Technical Field

[0001] This invention relates to the field of energy technology, and in particular to a distributed power storage system. Background Technology

[0002] Distributed energy storage systems refer to systems that coordinate and control energy storage devices located in different locations within a power system through communication networks and control technologies to achieve the storage, regulation, and flexible distribution of electrical energy. To meet the demands of energy storage scenarios for rapid deployment, high integration, and flexible expansion, integrated energy storage cabinets have become the mainstream product form in recent years. These integrated energy storage cabinets highly integrate core components into a standardized outdoor cabinet. Compared to traditional distributed energy storage systems, integrated energy storage cabinets have significant advantages such as smaller footprint, easier on-site installation, and pre-delivery system commissioning.

[0003] Existing integrated energy storage cabinets are often shown in Chinese patent document CN121565997B, which specifically discloses an integrated energy storage cabinet with adjustable heat dissipation function, including an energy storage cabinet body, a first cooling water pipe, a second cooling water pipe, and a cooling fan; the first cooling water pipe and the second cooling water pipe are used to water cool the battery inside the cabinet, and the cooling water pipe is used to cool the air sent into the cabinet by the cooling fan, so as to exchange heat with the battery and quickly dissipate heat.

[0004] The drawbacks of existing integrated energy storage cabinets are as follows: Current integrated energy storage cabinets use a combination of air cooling and water cooling for heat dissipation. Essentially, this involves air entering from the bottom and circulating to the top to lower the overall temperature of the cabinet, thus cooling the batteries. While using water cooling to cool the circulating air can improve heat exchange efficiency, this "environmental cooling" approach does not precisely target the areas with the highest heat concentration. In actual operation, heat typically accumulates in the central area of ​​the battery modules. The current uniform heat dissipation method cannot effectively eliminate localized hotspots, which may lead to accelerated aging of localized cells and even thermal runaway and other safety hazards over long-term operation. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of the inability of existing technologies to perform targeted and precise heat dissipation in local high-temperature areas of batteries, and to propose a distributed power storage system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A distributed power energy storage system includes a cabinet, in which multiple energy storage batteries are arranged at intervals, and a receiving cavity is formed between two adjacent energy storage batteries. One side of the cabinet has an air inlet corresponding to each of the receiving cavities, and the other side has an air outlet. The system is characterized in that the cabinet is equipped with a water cooling mechanism, multiple flow guiding mechanisms, multiple sealing mechanisms, and a driving device. The water-cooling mechanism is mounted on the cabinet, and the pipes of the water-cooling mechanism extend into each receiving cavity; Each of the aforementioned flow guiding mechanisms is disposed within a corresponding receiving cavity; Each of the aforementioned sealing mechanisms is located at the front end of the corresponding receiving cavity, and the sealing mechanism independently closes the air inlet channel of the receiving cavity according to the temperature of the corresponding receiving cavity; The driving device is used to uniformly drive each of the blocking mechanisms to open.

[0007] Preferably, each of the sealing mechanisms includes a sealing plate and a temperature-sensitive clutch assembly; the temperature-sensitive clutch assembly is configured to: disengage the transmission between the sealing plate and the driving device when the temperature of the corresponding cavity is lower than a preset threshold, and keep the sealing plate closed; and engage the transmission between the sealing plate and the driving device when the temperature of the corresponding cavity is higher than the preset threshold, thereby driving the sealing plate to open when the driving device is activated.

[0008] Preferably, the temperature-sensitive clutch assembly includes a thermistor magnet having a Curie temperature; when the temperature is below the Curie temperature, the thermistor magnet is magnetic, disengaging the transmission between the sealing plate and the drive device; when the temperature is above the Curie temperature, the thermistor magnet loses its magnetism, engaging the transmission between the sealing plate and the drive device.

[0009] Preferably, the sealing mechanism further includes a connecting shaft and a coil spring; the sealing plate is fixed on the connecting shaft, and the coil spring provides a restoring force to close the sealing plate; the driving device includes an electric telescopic rod, a gear, and a rack, the gear is sleeved on the connecting shaft, the rack meshes with the gear and is driven by the electric telescopic rod; the thermistor is slidably disposed along the axial direction of the connecting shaft, and when its temperature is higher than the Curie temperature, it slides between the gear and the connecting shaft to achieve circumferential fixation, thereby enabling the driving device to drive the sealing plate of the receiving cavity to open; when the driving device is activated, the sealing plates corresponding to all receiving cavities with temperatures higher than the Curie temperature open synchronously.

[0010] Preferably, the water-cooling mechanism includes a water tank, an outlet pipe, a return pipe, and multiple circulation pipes. A refrigeration unit is installed inside the water tank, and at least one circulation pipe is installed in each of the receiving cavities. The inlet end of each circulation pipe is connected to the outlet pipe, and the outlet end is connected to the return pipe, forming a closed-loop water circulation circuit. By setting up the water tank, outlet pipe, return pipe, and circulation pipes extending into each receiving cavity, a closed-loop water-cooling circulation circuit is formed. The integrated refrigeration unit inside the water tank enables continuous and uniform cooling of the circulating water, providing a stable and reliable low-temperature water-cooling medium for the energy storage batteries in each receiving cavity. This achieves uniform and constant-temperature heat dissipation of the battery pack under standby or full-area heat dissipation conditions, effectively suppressing the overall temperature difference of the battery pack.

[0011] Preferably, the flow guiding mechanism has a first working state and a second working state; in the first working state, the flow guiding mechanism is attached to the outer wall of the circulation pipe; in the second working state, the flow guiding mechanism is separated from the circulation pipe and flipped to a position close to the energy storage battery, forming an air duct to guide cooling air to scour the battery surface; the flow guiding mechanism is linked with the sealing mechanism, and when the sealing plate is opened, the flow guiding mechanism switches to the second working state; when the sealing plate is closed, the flow guiding mechanism switches to the first working state.

[0012] Preferably, the flow guiding mechanism includes at least one flow splitter fin, a first connecting plate, and a second connecting plate; the flow splitter fin is rotatably disposed in the receiving cavity, the first connecting plate is rotatably connected above the flow splitter fin at the first end, and the second connecting plate is hinged between the two flow splitter fins.

[0013] Preferably, the flow guiding mechanism further includes an offset ring and a connecting rod; the offset ring is sleeved on the circulation pipe and slides in cooperation with a groove one opened on the flow divider fin; two grooves are obliquely opened on both sides of the receiving cavity, one end of the connecting rod is connected to the flow divider fin, and the other end is slidably disposed in the groove two; the sealing mechanism further includes a pressing rod, which pushes the connecting rod to slide along the groove two when the sealing plate is opened or closed, thereby driving the flow divider fin to flip; by setting the offset ring to slide in cooperation with the groove one on the flow divider fin, and in The sidewall of the receiving cavity is inclined with a second sliding groove, which allows the connecting rod to slide within the second sliding groove to drive the diversion fins to flip. On the one hand, the offset ring can adaptively slide along the axial and circumferential directions of the circulation pipe to compensate for the deformation stress of the pipe when the circulation pipe expands and contracts with heat, thus avoiding structural compression deformation caused by rigid assembly. On the other hand, through the linkage between the extrusion rod and the connecting rod, the diversion fins can be synchronously and stably flipped when the sealing plate is opened / closed. This ensures the rapid formation of the high-speed heat exchange duct in the air-cooled mode and the fins can be reattached and reset in the water-cooled mode, greatly improving the reliability of the coordinated heat dissipation of air-cooled and water-cooled systems.

[0014] Preferably, the air inlet side of the cabinet is provided with a fixed frame, and a cooling fan is installed in the fixed frame. The output end of the cooling fan is connected to each of the air inlets; a filter screen is provided at each air inlet.

[0015] Preferably, the cooling fan is configured to have a constant speed; when the sealing mechanism corresponding to a portion of the accommodating cavity is in the closed state, the total cooling air volume delivered by the cooling fan is concentrated and flows to the accommodating cavity corresponding to the sealing mechanism that is still in the open state.

[0016] Compared with the prior art, the present invention provides a distributed power energy storage system with the following beneficial effects.

[0017] 1. This invention, through the combination of a thermistor and a sealing mechanism, can autonomously control the closing of the sealing plate based on the real-time temperature of each area. In high-temperature areas, the sealing plate remains open for continuous ventilation and heat dissipation, while in conventional low-temperature areas, the ventilation channels can be closed in advance, allowing cool air to actively converge towards the heat accumulation area. This targeted enhancement of localized heat exchange effectively solves the problems of insufficient localized heat dissipation and large temperature differences within the module under traditional air-cooled and water-cooled overall heat dissipation modes, eliminating localized hot spots in the battery and ensuring a uniform and stable operating temperature for the energy storage battery.

[0018] 2. This invention integrates air-cooling and water-cooling mechanisms to form a dual heat dissipation system. Under normal conditions, rapid convection cooling is achieved through air cooling, while water-cooled pipes are installed in each cavity to continuously assist in heat dissipation. When the blocking mechanism is activated, the flow guiding mechanism operates simultaneously, changing the airflow direction and optimizing the flow channel structure to enhance the air-cooling heat exchange effect. After the blocking mechanism is reset, the diversion fins adhere to the water-cooling pipes, acting as heat dissipation fins, increasing the water-cooling heat exchange area, and fully utilizing the advantages of water-cooling heat dissipation. The two mechanisms work together to significantly improve the overall heat dissipation capacity.

[0019] 3. This invention maintains a constant total airflow from the fan and redistributes airflow by switching ventilation paths, eliminating the need for frequent fan start-stop and power adjustments. This ensures effective heat dissipation while reducing equipment start-up and shutdown losses and energy consumption. Differentiated airflow allocation to battery areas with varying heat levels avoids ineffective airflow, improves the utilization efficiency of cooling airflow, and results in significant energy savings.

[0020] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be learned from practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the water-cooling mechanism of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the cavity and air inlet of the present invention.

[0025] Figure 5 This is a schematic diagram of the assembly structure of the driving device and the sealing mechanism of the present invention.

[0026] Figure 6 For the present invention Figure 5 A magnified structural diagram of point A in the middle.

[0027] Figure 7 This is a schematic diagram of the assembly structure of the flow guiding mechanism of the present invention.

[0028] Figure 8 For the present invention Figure 7 A magnified structural diagram at point B in the middle.

[0029] Figure 9 This is a schematic diagram of the flow guiding mechanism of the present invention.

[0030] Figure 10 For the present invention Figure 9 A magnified structural diagram at point C.

[0031] In the picture: 1. Cabinet; 12. Energy storage battery; 13. Control center; 14. Filter screen; 15. Fixing frame; 16. Air inlet; 17. Air outlet; 2. Water cooling mechanism; 21. Water tank; 22. Water outlet pipe; 23. Water return pipe; 24. Circulation pipe; 3. Flow guiding mechanism; 31. Flow dividing fins; 32. Connecting plate one; 33. Connecting plate two; 34. Offset ring; 35. Connecting rod; 36. Slide groove one; 37. Slide groove two; 38. Rotating rod one; 39. Rotating rod two; 4. Sealing mechanism; 41. Sealing plate; 42. Connecting shaft; 43. Thermistor magnet; 44. Extrusion rod; 45. Reset component; 5. Drive device; 51. Electric telescopic rod; 52. Gear; 53. Rack. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] To address the technical issues of existing integrated energy storage cabinets that use a uniform cooling and water cooling system, resulting in uniform airflow distribution but unable to provide targeted and precise cooling for localized high-temperature areas of the battery, leading to wasted airflow in low-temperature areas and insufficient cooling in high-temperature areas, which in turn causes large overall temperature differences in the battery pack, severe local heat accumulation, and poor battery heat dissipation consistency.

[0034] To clearly explain the structure and heat dissipation principle of the present invention, the closed ventilation interval formed inside the cabinet and between two adjacent energy storage batteries 12 is defined as the receiving cavity; along the airflow direction of the cold air from the air inlet side to the air outlet side of the cabinet, the two ends of each receiving cavity are defined as the first end (air inlet) and the last end (air outlet).

[0035] Reference Figures 1-10 As shown, a distributed power storage system of the present invention includes a cabinet 1, a water cooling mechanism 2 disposed in the cabinet 1, multiple flow guiding mechanisms 3 and multiple sealing mechanisms 4, each flow guiding mechanism 3 being disposed in a receiving cavity.

[0036] The cabinet 1 includes multiple energy storage batteries 12, a control center 13, a filter 14, a fixing frame 15, an air inlet 16, an air outlet 17, a sealing mechanism 4, and a drive device 5. The multiple energy storage batteries 12 are arranged at intervals inside the cabinet 1. The control center 13 is installed at the bottom inside the cabinet 1. The fixing frame 15 is fixedly installed on the outer wall of the air inlet side of the cabinet 1. A cooling fan is installed inside the fixing frame 15. Multiple air inlets 16 connected to the fan output are opened on the air inlet side of the cabinet 1, and each inlet corresponds to a cavity between the energy storage batteries 12. The air outlet 17 is located on the other side of the cabinet 1, forming a through ventilation channel with the air inlet 16; the sealing mechanism 4 is rotatably installed inside the cabinet 1 and located on one side of the energy storage battery 12, and the sealing mechanism 4 completely covers the air inlet of the cavity; the drive device 5 is fixed on the top of the inner side of the cabinet 1, and a temperature sensor is independently installed inside the cabinet 1 for each cavity, and each temperature sensor detects the surface temperature of the energy storage battery 12 inside the corresponding cavity. All temperature sensors are electrically connected to the control center 13.

[0037] When the temperature inside the cabinet 1 rises, the temperature sensor installed inside the cabinet collects the temperature signal and transmits it to the control center 13. The control center 13 starts the cooling fan and drive device 5 inside the fixed frame 15. The fan draws in outside air, which is purified by the filter screen 14 and then sent into the cabinet 1 through the air inlet 16. The drive device 5 drives the sealing mechanism 4 to open, and the clean cold air enters the receiving cavity through the sealing mechanism 4 and is finally discharged from the air outlet 17, realizing uniform heat dissipation of the battery pack inside the cabinet.

[0038] Once the low-temperature area heat dissipation meets the standard, the corresponding sealing mechanism 4 closes independently, blocking the cold air from entering the closed containment cavity. At this time, the total air volume of the fan remains unchanged, and all the cold air is concentrated and flows to the high-temperature area of ​​the battery, effectively improving the convective heat transfer efficiency of the high-temperature area, quickly eliminating local heat accumulation, and improving the problems of insufficient heat dissipation in the high-temperature area and excessive battery temperature difference in the traditional full-area heat dissipation mode.

[0039] The sealing mechanism 4 includes a sealing plate 41, a connecting shaft 42, a thermistor 43, two extrusion rods 44, and a reset component 45. Each sealing plate 41 is correspondingly set with a corresponding air inlet 16. The connecting shaft 42 is rotatably installed inside the cabinet 1. All sealing plates 41 and connecting shafts 42 are located in front of the receiving cavity inside the cabinet 1. Two extrusion rods 44 are set at the front end of each receiving cavity. The bottom of the sealing plate 41 is fixedly connected to the connecting shaft 42 and can rotate synchronously with the connecting shaft 42. The end of the connecting shaft 42 is connected to the thermistor 43 through a sliding key. The thermistor 43 slides along the axial direction of the connecting shaft 42. The end of the thermistor 43 facing the gear 52 has an integrally formed extension. The reset component 45 is set on the extrusion rod 44, and a coil spring is set between the sealing plate 41 and the cabinet 1.

[0040] The bottom of the sealing plate 41 has a through hole for the connecting shaft 42 to pass through, and the sealing plate 41 rotates in the cabinet 1 through the connecting shaft 42; two extrusion rods 44 are symmetrically arranged on both sides of the receiving cavity, and two limiting rods are fixedly provided at the ends of the extrusion rods 44 at intervals in the vertical direction. A connecting block is fixedly installed on the rod body of the extrusion rod 44; the cabinet 1 has a through sliding hole at the front end of each receiving cavity, and the extrusion rod 44 is slidably installed in the through hole and slides back and forth in the horizontal direction; an installation block is fixedly installed inside the cabinet 1 at the front end of each receiving cavity, and the two ends of the reset member 45 are fixedly connected to the connecting block and the installation block respectively. The reset member 45 is an elastic connecting member. In this embodiment, the Curie temperature of the thermistor magnet 43 is 25°C, which is compatible with the normal operating temperature control threshold of the energy storage battery. The reset member is a spring; one end of the coil spring is fixedly connected to the cabinet 1, and the other end is fixedly connected to the sealing plate 41 to realize the reset and energy storage of the sealing plate 41.

[0041] The drive device 5 includes an electric telescopic rod 51, a gear 52, and a rack 53. The electric telescopic rod 51 is fixedly installed inside the cabinet 1. One end of the rack 53 is fixedly connected to the output end of the electric telescopic rod 51. The gear 52 is sleeved on the end of the connecting shaft 42. The connecting shaft 42 is provided with an axial sliding groove, and the inner side of the gear 52 is provided with an axial limiting groove. The gear 52 can be fixed or separated from the connecting shaft 42 by a thermistor magnet 43. The rack 53 and the gear 52 are always meshed. The extension and retraction of the electric telescopic rod 51 drives the rack 53 to move, thereby driving the gear 52 to rotate. The end of the thermistor magnet 43 away from the gear 52 is provided with a spring, and the other end of the spring is fixedly connected to the inner wall of the cabinet 1. At room temperature, the magnetic force of the thermistor magnet 43 overcomes the elastic force of the spring and attracts and fixes it to the end of the connecting shaft 42. When the temperature exceeds the Curie temperature, the magnetic force disappears, and the spring releases its elastic force to push the thermistor magnet 43 toward the gear 52.

[0042] Specifically, the thermistor magnet 43 is mounted with a spring at one end of the gear 52, and the other end of the spring is fixedly connected to the inner wall of the cabinet 1. Under normal operating conditions, the temperature of the thermistor magnet 43 is lower than its own Curie temperature, maintaining its magnetism and overcoming the elastic force of the return spring to adhere and fix it to the end of the connecting shaft 42. At this time, the gear 52 and the connecting shaft 42 are in a disengaged state. When the internal temperature of the cabinet rises and the temperature of the thermistor magnet 43 exceeds its own Curie temperature, the magnetism of the thermistor magnet 43 disappears, the elastic force of the return spring is released, and the thermistor magnet 43 is pushed to slide along the axial direction of the connecting shaft 42 toward the end face of the gear 52, so that the extension of the end face of the thermistor magnet 43 slides between the gear 52 and the connecting shaft 42 to complete the gear 52. The connecting shaft 42 is circumferentially fixed; the control center 13 starts the electric telescopic rod 51 to push the rack 53 to move. Through the meshing transmission between the rack 53 and the gear 52, the gear 52 is driven to rotate synchronously with the connecting shaft 42 along the axis of the connecting shaft 42. The sealing plate 41 rotates with the connecting shaft 42 and opens the receiving cavity; the coil spring between the connecting shaft 42 and the sealing plate 41 stores energy as the sealing plate 41 rotates. The sealing plate 41 opens, and the reset member 45 pushes the extrusion rod 44 to slide horizontally towards the first end of the receiving cavity, allowing cold air from the outside to enter the receiving cavity and dissipate heat throughout the energy storage battery 12.

[0043] During the heat dissipation process, when the temperature of the non-high-temperature heat dissipation area drops below the Curie temperature of the thermistor 43, the thermistor 43 regains its magnetism. Under the action of magnetic force, the thermistor 43 overcomes the spring force and re-adheres to the end of the connecting shaft 42. This causes the extension of the end face of the thermistor 43 to disengage from the meshing position of the gear 52 and the connecting shaft 42, releasing the circumferential fixation between the gear 52 and the connecting shaft 42. At this time, the coil spring releases its elastic potential energy, causing the sealing plate 41 to rotate in the opposite direction, and the squeezing rod 44 slides along the end of the horizontal cavity, thus sealing the beginning of the cavity. Meanwhile, the temperature of the high-temperature area where battery heat accumulates is still higher than the Curie temperature of the thermistor 43, and the thermistor 43 at the corresponding position continues to lose magnetism. The sealing plate 41 remains open, continuously dissipating heat in a directional manner to the high-temperature area of ​​the battery.

[0044] The water cooling mechanism 2 includes a water tank 21, an outlet pipe 22, a return pipe 23 and multiple circulation pipes 24 installed on the top of the cabinet 1, and each cavity is equipped with a circulation pipe 24.

[0045] The inlet end of the circulation pipe 24 is connected to the outlet pipe 22, and the outlet end is connected to the return pipe 23, forming a closed-loop water circulation circuit; the water tank 21 has an integrated refrigeration unit, which can continuously cool the internal circulating water and provide a low-temperature water cooling medium for battery heat dissipation.

[0046] The flow guiding mechanism 3 includes two flow-diverting fins 31, a connecting plate 1 32, a connecting plate 2 33, multiple offset rings 34, and a connecting rod 35. Each flow-diverting fin 31 is provided with multiple sliding grooves 1 36, and each offset ring 34 is assembled in the sliding groove 1 36. Rotating rods 1 38 and 2 39 are respectively assembled at the two ends of the flow-diverting fin 31. The connecting plate 1 32 is rotatably installed on the flow-diverting fin 31 at the front end of the receiving cavity through the rotating rod 1 38. The connecting plate 2 33 is hinged between the two flow-diverting fins 31 through the rotating rod 2 39. The inner wall of the cabinet 1 is provided with four sliding grooves 2 37 on each side wall corresponding to each receiving cavity. The four sliding grooves 2 37 are symmetrically arranged in pairs along the horizontal center line of the receiving cavity.

[0047] Two diversion fins 31 are respectively located at the beginning and end of the receiving cavity, and are arranged in the gap position of the water-cooled circulation pipe 24; the plate of the diversion fin 31 is provided with corresponding through mounting holes for the fitting connecting rod 35, rotating rod one 38, and rotating rod two 39; the two ends of the connecting rod 35 at the beginning of the receiving cavity pass through the channel formed by the two limiting rods at the end of the extrusion rod 44, and are slidably connected to the sliding groove two 37 on the inner side of the cabinet 1, and the connecting rod 35 slides along the extension direction of the sliding groove two 37; the diversion fin 31 is a triangular plate structure as a whole, and the connecting plate one 32 is located above the diversion fin 31. One end of the 2 is rotatably connected to the first-end diversion fin 31, and the other end abuts against the end-end diversion fin 31; the second connecting plate 33 is located below the diversion fin 31, and both ends are rotatably hinged to the two diversion fins 31 through the second rotating rod 39; each offset ring 34 is spaced and sleeved on both ends of the circulation pipe 24 inside the receiving cavity, and the offset ring 34 has a connecting post extending radially. The connecting post is rotatably and slidably assembled inside the first slide groove 36 and can slide along the extension direction of the first slide groove 36. The second slide groove 37 is inclined at 30° to the horizontal direction, and the maximum stroke of the connecting rod 35 along the second slide groove 37 corresponds to the diversion fin 31. A 90° flip angle; hinged limiting blocks are set at both ends of connecting plate 1 32 and connecting plate 2 33 to limit the flow divider fins to switch only between the horizontal fitting state and the vertical flow guiding state, avoiding excessive offset; the offset ring 34 can adaptively slide and offset along the slide groove 1 36, and compensate for the pipe deformation stress by axial sliding when the water cooling circulation pipe 24 expands and contracts with heat, avoiding structural compression deformation caused by rigid assembly; at the same time, the offset ring 34 can assist in the positioning of the flow divider fins 31 and improve the adjustment stability of the flow guiding structure.

[0048] In this embodiment, cold air enters the receiving cavity and flows rapidly towards the surface of the energy storage battery 12 along the slope of the diversion fins 31. A high-speed heat exchange airflow is formed between the connecting plate 1 32, the connecting plate 2 33 and the energy storage battery 12, which greatly improves the air-cooled convection heat transfer effect and quickly removes heat from the battery surface. After heat dissipation is completed, the sealing plate 41 closes and resets, pushing the extrusion rod 44 to slide towards the end of the receiving cavity, causing the connecting rod 35 to slide in the opposite direction along the sliding groove 2 37, driving the diversion fins 31 to flip and reset, so that the connecting plate 1 32 and the connecting plate 2 33 re-attach to the surface of the circulation pipe 24, forming a heat dissipation fin structure. This effectively expands the heat dissipation contact area of ​​the water-cooling mechanism, enhances the water-cooling heat dissipation effect, and ultimately achieves the synergistic cooperation of precise zoned air-cooling heat dissipation and full-area auxiliary water-cooling heat dissipation, comprehensively optimizing the heat dissipation environment of the energy storage battery.

[0049] Working principle: Under normal standby temperature conditions, the ambient temperature of each thermistor 43 is lower than its own Curie temperature, maintaining stable magnetism and overcoming the tensile force of the end return spring to continuously adhere and fix it to the end of the connecting shaft 42. At this time, the gear 52 is loosely fitted on the outside of the end of the connecting shaft 42, with no circumferential transmission between them, and the gear 52 can rotate freely with the rack 53. The sealing plate 41 of the sealing mechanism 4 remains fully closed under the elastic return action of the coil spring, covering the air inlet of each cavity and blocking the air-cooling duct passage. Under this condition, the cooling fan is off, and the system relies solely on water. The cooling mechanism 2 achieves constant temperature heat dissipation throughout the entire area; the refrigeration unit integrated inside the water tank 21 continuously cools the circulating water. The low-temperature cooling water is diverted through the outlet pipe 22 to the circulation pipe 24 inside each containment cavity, and then flows back to the water tank 21 through the return pipe 23, forming a closed-loop refrigeration cycle; at this time, the diversion fins 31, connecting plate one 32, and connecting plate two 33 of the flow guiding mechanism 3 remain in contact with the surface of the circulation pipe 24, forming an integrated heat dissipation fin structure, effectively expanding the water cooling heat exchange contact area, and uniformly and continuously dissipating low-temperature constant temperature heat to all energy storage batteries 12 inside the cabinet 1, ensuring stable battery standby temperature.

[0050] When the temperature sensors installed inside the cabinet 1 detect that the overall temperature of the energy storage battery 12 has risen and reached the preset heat dissipation start threshold, the temperature signal is transmitted to the control center 13 in real time. The control center 13 then simultaneously starts the cooling fan inside the fixed frame 15 and the drive device 5 on the top of the cabinet 1.

[0051] The cooling fan draws in outside air, which is purified and dust-removed by the filter 14. Then, clean, cool air is delivered to the corresponding housing cavity of each energy storage battery 12 through multiple air inlets 16 evenly distributed on the air intake side of the cabinet 1. After the overall temperature of the unit rises, the temperature of the thermistor magnets 43 in all areas simultaneously exceeds their own Curie temperature. The thermistor magnets 43 instantly lose magnetism and their magnetic force disappears. The spring force of the reset spring, which was originally compressed by the magnetic force, is completely released, pushing the thermistor magnets 43 to slide axially along the connecting shaft 42 toward the end face of the gear 52. This causes the annular extension snap-fit ​​part integrally formed at the end of the thermistor magnet 43 to snap into the axial limiting slot inside the gear 52, achieving circumferential locking between the gear 52 and the connecting shaft 42, forming a synchronous transmission structure.

[0052] The electric telescopic rod 51 of the drive device 5 performs telescopic movement, driving the rack 53 to move horizontally back and forth. Utilizing the constant meshing relationship between the rack 53 and the gear 52, the gear 52 and the connecting shaft 42 are driven to rotate synchronously as a whole, driving all the sealing plates 41 to rotate synchronously and open the air inlet ducts of each receiving cavity. During the opening and rotation of the sealing plate 41, the corresponding squeezing rod 44 is released, causing the squeezing rod 44 to slide along the horizontal sliding hole of the cabinet 1 towards the first end of the receiving cavity. At the same time, the rotation of the sealing plate 41 drives the coil spring to rotate synchronously to store energy. During the sliding process of the squeezing rod 44, its end limit rod abuts against and pushes the connecting rod 35 to slide along the sliding groove 37 inclinedly arranged on the side wall of the cabinet 1, driving the diversion fins 31 to flip and adjust, so that the diversion fins 31 flip from the horizontal state attached to the circulation pipe 24 to the vertical state close to the energy storage battery 12. The connecting plate 1 32 and the connecting plate 2 33 synchronously disengage from the circulation pipe 24, forming a narrow high-speed heat exchange duct on the surface of the battery. Clean, cool air is rapidly flushed across the surface of the energy storage battery 12 via the air duct, significantly improving the efficiency of air-cooled convection heat transfer. Combined with the continuous all-area heat dissipation of the water-cooling mechanism 2, all energy storage batteries 12 achieve coordinated heat dissipation across the entire area, quickly reducing the overall temperature inside the cabinet.

[0053] During the overall heat dissipation process, the heat dissipation areas corresponding to each cavity independently and adaptively adjust, forming a differentiated zoned heat dissipation effect. For the low-temperature areas where the heat dissipation speed is fast and the temperature drops first, the temperature of the corresponding thermistor 43 drops rapidly below the Curie temperature, and the magnet automatically recovers its magnetism. It can then overcome the elastic force of the return spring and reposition itself to the end of the connecting shaft 42, causing the annular extension of the thermistor 43 to exit the limiting slot of the gear 52, releasing the circumferential locking relationship between the gear 52 and the connecting shaft 42, and the transmission engagement fails. At this time, the coil spring releases... The elastic potential energy is released, causing the sealing plate 41 to rotate in the opposite direction and reset, closing the air inlet 16 of the corresponding receiving cavity, completely blocking the cold air from entering the low-temperature area and avoiding the waste of air volume in the low-temperature area; at the same time, during the reset process of the sealing plate 41, the squeezing rod 44 is pushed to slide towards the end of the receiving cavity, and the reset piece 45 springs back to reset, simultaneously driving the connecting rod 35 to slide in the opposite direction along the second slide groove 37, driving the diversion fins 31, the first connecting plate 32, and the second connecting plate 33 to re-attach to the surface of the circulation pipe 24, restoring the fin heat dissipation structure and enhancing the water cooling constant temperature effect in the low-temperature area.

[0054] For high-temperature areas with heat accumulation and persistently high temperatures, the corresponding thermistor 43 is kept above the Curie temperature and in a demagnetized state, while the sealing plate 41 remains open and the air duct is unobstructed. Since the cooling fan speed is constant and the total air volume remains unchanged, the cold air trapped in the low-temperature area will be concentrated and gathered to the high-temperature area of ​​the battery, forming a large-flow directional forced convection cooling, which quickly flushes away the local heat accumulation in the battery and eliminates local hot spots.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A distributed power storage system, comprising a cabinet (1), wherein multiple energy storage batteries (12) are arranged at intervals inside the cabinet (1), and a receiving cavity is formed between two adjacent energy storage batteries (12), wherein an air inlet (16) corresponding to each of the receiving cavities is provided on one side of the cabinet (1), and an air outlet (17) is provided on the other side, characterized in that, The cabinet (1) is equipped with a water cooling mechanism (2), multiple flow guiding mechanisms (3), multiple sealing mechanisms (4) and a drive device (5). The water cooling mechanism (2) is mounted on the cabinet (1), and the pipes of the water cooling mechanism (2) extend into each receiving cavity; Each of the aforementioned flow guiding mechanisms (3) is disposed within a corresponding receiving cavity; Each of the sealing mechanisms (4) is located at the front end of the corresponding receiving cavity, and the sealing mechanism (4) independently closes the air inlet channel of the receiving cavity according to the temperature of the corresponding receiving cavity; The driving device (5) is used to drive each of the blocking mechanisms (4) to open in a unified manner.

2. The distributed power storage system according to claim 1, characterized in that, Each of the sealing mechanisms (4) includes a sealing plate (41) and a temperature-sensitive clutch assembly; the temperature-sensitive clutch assembly is configured to: disengage the transmission between the sealing plate (41) and the driving device (5) when the temperature of the corresponding cavity is lower than a preset threshold, and keep the sealing plate (41) closed; and engage the transmission between the sealing plate (41) and the driving device (5) when the temperature of the corresponding cavity is higher than the preset threshold, thereby driving the sealing plate (41) to open when the driving device (5) is activated.

3. A distributed power storage system according to claim 2, characterized in that, The temperature-sensitive clutch assembly includes a thermistor (43) having a Curie temperature; when the temperature is below the Curie temperature, the thermistor (43) is magnetic, and the transmission between the sealing plate (41) and the drive device (5) is disengaged; when the temperature is above the Curie temperature, the thermistor (43) loses its magnetism, and the transmission between the sealing plate (41) and the drive device (5) is connected.

4. A distributed power storage system according to claim 3, characterized in that, The sealing mechanism (4) further includes a connecting shaft (42) and a coil spring; the sealing plate (41) is fixed on the connecting shaft (42), and the coil spring is used to provide a restoring force to close the sealing plate (41); the driving device (5) includes an electric telescopic rod (51), a gear (52) and a rack (53), the gear (52) is sleeved on the connecting shaft (42), the rack (53) meshes with the gear (52) and is driven by the electric telescopic rod (51); the thermistor (43) is slidably arranged along the axial direction of the connecting shaft (42), and when its temperature is higher than the Curie temperature, it slides between the gear (52) and the connecting shaft (42) to achieve circumferential fixation, so that the driving device (5) can drive the sealing plate (41) of the receiving cavity to open; when the driving device (5) is activated, the sealing plates (41) corresponding to all receiving cavities with temperatures higher than the Curie temperature open synchronously.

5. A distributed power storage system according to claim 4, characterized in that, The water cooling mechanism (2) includes a water tank (21), an outlet pipe (22), a return pipe (23), and multiple circulation pipes (24). The water tank (21) is equipped with a refrigeration unit, and each of the accommodating chambers is equipped with at least one circulation pipe (24). The inlet end of the circulation pipe (24) is connected to the outlet pipe (22), and the outlet end is connected to the return pipe (23), forming a closed-loop water circulation circuit.

6. A distributed power storage system according to claim 5, characterized in that, The flow guiding mechanism (3) has a first working state and a second working state; in the first working state, the flow guiding mechanism (3) is attached to the outer wall of the circulation pipe (24); in the second working state, the flow guiding mechanism (3) is separated from the circulation pipe (24) and flipped to a position close to the energy storage battery (12) to form a wind channel that guides cooling air to scour the surface of the battery; the flow guiding mechanism (3) is linked with the sealing mechanism (4), the sealing plate (41) is opened, and the flow guiding mechanism (3) switches to the second working state; the sealing plate (41) is closed, and the flow guiding mechanism (3) switches to the first working state.

7. A distributed power storage system according to claim 6, characterized in that, The flow guiding mechanism (3) includes at least one flow splitting fin (31), a first connecting plate (32) and a second connecting plate (33); the flow splitting fin (31) is flipped and disposed in the receiving cavity, the first connecting plate (32) is rotatably connected above the flow splitting fin (31) at the first end, and the second connecting plate (33) is hinged between the two flow splitting fins (31).

8. A distributed power storage system according to claim 7, characterized in that, The flow guiding mechanism (3) further includes an offset ring (34) and a connecting rod (35); the offset ring (34) is sleeved on the circulation pipe (24) and slides in cooperation with the first groove (36) opened on the diversion fin (31); the two side walls of the receiving cavity are inclinedly provided with a second groove (37), one end of the connecting rod (35) is connected to the diversion fin (31), and the other end is slidably disposed in the second groove (37); the sealing mechanism (4) further includes a squeezing rod (44), which pushes the connecting rod (35) to slide along the second groove (37) when the sealing plate (41) is opened or closed, thereby driving the diversion fin (31) to flip.

9. A distributed power storage system according to claim 1, characterized in that, The cabinet (1) has a fixed frame (15) on the air inlet side, and a cooling fan is installed in the fixed frame (15). The output end of the cooling fan is connected to each of the air inlets (16). A filter screen (14) is provided at each air inlet (16).

10. A distributed power storage system according to claim 9, characterized in that, The cooling fan is configured to have a constant speed; when the sealing mechanism (4) corresponding to a portion of the accommodating cavity is in the closed state, the total cooling air volume delivered by the cooling fan is concentrated and flows to the accommodating cavity corresponding to the sealing mechanism (4) which is still in the open state.

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