Modularized energy storage equipment of high-voltage power system

Abstract

The invention relates to the technical field of electric power energy storage, and discloses modular energy storage equipment of a high-voltage electric power system, which comprises an energy storage box, a tray with a three-dimensional constraint mechanism is arranged at the bottom of an inner cavity of the energy storage box, and an annular airflow channel is formed between an energy storage element located above the tray and the inner wall of the energy storage box. A plurality of windows are evenly formed in the circumferential side wall of the energy storage box, a heat dissipation assembly is assembled on the periphery of each window, a folding and unfolding transmission assembly is correspondingly arranged outside each heat dissipation assembly, a height adjusting device is arranged in a base installed at the bottom of the energy storage box, an adjusting piece capable of vertically moving along the base is assembled on the height adjusting device, and the adjusting piece is in transmission connection with the folding and unfolding transmission assemblies. The heat dissipation mode can be adaptively adjusted according to the operation temperature of the energy storage element, so that the energy consumption is reduced while the safety is ensured, and the economical efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy storage, and more specifically to a modular energy storage device for a high-voltage power system. Background Art

[0002] In an electric energy storage system, battery energy storage has become the mainstream energy storage method due to its controllable cost, wide application scenarios, and high safety. To increase the output voltage of energy storage elements, multiple battery units usually need to be connected in series. However, this method will generate a large amount of heat during load operation. If the heat dissipation is insufficient, the battery temperature will rise, seriously affecting its safety and service life. For example, the invention patent with the publication number CN119208824B discloses a modular energy storage device, which fixes the battery module by setting a limiting frame in the energy storage box and adopts a closed circulation system composed of a liquid storage box and a corrugated pipe to conduct heat and cool down using insulating oil. Specifically, this solution includes: a limiting frame is provided on the inner wall of the energy storage box to fix the modular energy storage element; liquid storage boxes are installed on five sides of the box body and the box door, and are filled with insulating oil; adjacent liquid storage boxes are connected through corrugated pipes to form a circulation path; a scraper and a rubber pad are provided in the liquid storage box to enhance contact heat conduction. This solution has the following defects: ‌Single heat dissipation mode‌: It only relies on the physical heat conduction of insulating oil and cannot dynamically adjust the heat dissipation intensity according to the actual operating temperature of the battery (‌heat dissipation mode), resulting in high energy consumption; ‌Insufficient adaptability‌: When the battery operates at low load, the heat dissipation system still operates in a fixed mode, causing energy waste and poor economy.

[0003] Therefore, there is an urgent need for an efficient energy storage system that can adaptively adjust the heat dissipation mode according to the operating temperature of the energy storage element to reduce energy consumption and improve economy while ensuring safety. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a modular energy storage device for a high-voltage power system, which solves the problems of ‌insufficient safety and excessive energy consumption‌ caused by the existing energy storage element due to ‌single heat dissipation mode and inability to dynamically adjust‌, so as to achieve the balance of ‌efficient heat dissipation and energy-saving operation‌.

[0005] The present invention provides the following technical solution: A modular energy storage device for a high-voltage power system, including an energy storage box. At the bottom of the inner cavity of the energy storage box, a tray with a three-dimensional restraint mechanism is installed. An annular air flow channel is formed between the energy storage element located above the tray and the inner wall of the energy storage box. A plurality of windows are evenly opened on the circumferential side wall of the energy storage box. A heat dissipation assembly is assembled outside each window. A retractable transmission assembly is correspondingly configured outside each group of heat dissipation assemblies. A height adjustment device is built in the base installed at the bottom of the energy storage box, and an adjustment member that can move vertically along the base is assembled on it. The adjustment member is in transmission connection with the retractable transmission assembly; A blower is arranged inside the base below the height adjustment device; The heat dissipation assembly includes an outer frame body. The outer frame body is installed outside the circumferential window of the energy storage box. A push plate and a diversion heat dissipation part are arranged in sequence from outside to inside in its inner cavity. The two are fixedly assembled and only in surface contact with the outer frame body; The piston-type pusher configured outside the outer frame body is integrally formed by a pressure plate and a double connecting rod. The double connecting rod movably penetrates the outer frame body and is rigidly connected to the push plate, and a spring is wound on the surface of the double connecting rod between the pressure plate and the outer frame body; The retractable transmission assembly is composed of a guiding inclined arm, a cross-wall fixed beam, a sliding rod and a yielding arm. The two ends of the cross-wall fixed beam extend across the outer frame body and are fixedly connected to the side wall of the energy storage box; The guiding inclined arm is integrally formed by a guiding section and an inward inclined section. A corner node is formed at the junction of the two sections. The corner node is rotatably connected to the outer extended shaft end of the cross-wall fixed beam; Tracks are symmetrically opened on the side wall of the guiding section. The sliding rod can be slidably arranged in the tracks. Its shaft end is hinged to the yielding arm, and the other end of the yielding arm is rigidly connected to the pressure plate of the piston-type pusher.

[0006] Further, the diversion heat dissipation part includes a heat exchange cabin body, a heat conduction layer, a transmission cabin body, a lead screw, a micro motor and a lifting oiler; The transmission cabin body is fixedly connected to the bottom of the heat exchange cabin body, and the two are jointly installed inside the push plate; A lead screw is rotatably arranged at the center of the heat exchange cabin body, and its bottom end is coaxially assembled with the micro motor inside the transmission cabin body; The lifting oiler moving in the inner cavity of the heat exchange cabin body is in transmission connection with the lead screw; A heat conduction layer is arranged on the side wall of the heat exchange cabin body away from the push plate.

[0007] Further, the lifting oiler includes a U-shaped frame, an oiling cylinder and turbulence beads. The U-shaped frame is threadedly connected to the lead screw. An oiling cylinder is rotatably connected inside the U-shaped frame. The oiling cylinder is attached to the inner surface of the heat conduction layer. The oiling cylinder is filled with irregularly distributed turbulence beads; Both the oiling cylinder and the turbulence beads are hollow and porous structures.

[0008] Further, a corrugated pipe nested in a matching manner is adopted inside the connecting pipe installed on the side wall of the outer frame body. One end of it is hermetically connected to the connecting pipe, and the other end penetrates the push plate and is fixedly connected to the heat exchange cabin body.

[0009] Furthermore, the adjusting member is provided with an integrally formed radial wing plate on its circumference, which extends radially and passes through a vertical guide opening preset on the side wall of the base, and a groove is provided at the end of the wing plate; the inwardly inclined section of the guide inclination arm passes through the vertical guide opening of the base and extends into its inner cavity; the groove at the end of the wing plate of the adjusting member forms a contact-type limiting fit with the inwardly inclined section of the guide inclination arm.

[0010] Furthermore, the height adjustment device adopts a telescopic cylinder, the telescopic end of which needs to be accurately inserted into the central positioning hole of the adjustment member and rigidly connected and assembled therewith, and the base of the telescopic cylinder is rigidly connected to the inner wall of the base through the mounting bracket.

[0011] Furthermore, the guide portion arranged on the periphery of the energy storage box is located on the lower side of the heat dissipation assembly, and is connected in series with the heat dissipation assembly of the circumferential array through the guide portion and the fluid drive assembly installed on the outer side of the base.

[0012] Furthermore, the guide part and the fluid drive assembly form a fluid communication system, and the fluid drive assembly is composed of a circulation pump, a refrigerator and a delivery pipe; the circulation pump is fixedly installed on the outer surface of the base, and its pumping end and discharge end are respectively connected to the refrigerator through delivery pipes; at the same time, the refrigerator is connected to the guide part through another set of delivery pipes, thereby forming a stable one-way cold flow circulation path inside the guide part, and the guide part is connected to the guide and heat dissipation part.

[0013] Furthermore, an auxiliary adjustment assembly is installed above the guide tilt arms arranged oppositely on the left and right sides or the front and rear sides. The auxiliary adjustment assembly includes a tension rod, a cabin plate and a traction rope, wherein the tension rod is fixedly connected to the top of the guide tilt arm, the cabin plate is hinged at the hatch of the energy storage box, and the tension rod and the cabin plate are connected by a traction rope.

[0014] Furthermore, a positioning detection system consisting of a signal transmitter and a signal receiver is provided inside the base; the signal transmitter is fixedly mounted on the telescopic motion end of the telescopic cylinder, and the signal receiver is arranged at a corner position of the inner wall of the base.

[0015] Technical effects and advantages of the present invention: When the adjusting part is driven downward by the telescopic cylinder of the present invention, the groove of the wing plate continuously presses the lower half of the guide tilt angle arm to generate an outward thrust, so that the guide tilt angle arm deflects centripetally with the cross-wall fixed beam as the axis, drives the sliding rod to slide up along the track and pushes the retreat arm to maintain horizontal force transmission; after the thrust overcomes the spring resistance through the piston-type propulsion member, it drives the recursive plate and the guide and heat dissipation part to move centripetally, so that the four groups of guide and heat dissipation parts are tightly fitted to the side wall of the component, realizing stepless switching of the heat dissipation mode; during the whole process, the guide tilt angle arm synchronously completes the compound movement of bottom expansion and top aggregation, ensuring the accuracy and reliability of the adaptive adjustment of the heat dissipation mechanism.

[0016] The present invention automatically determines that the shape change is completed and switches the mode through the positioning detection system; the controller synchronously controls the fluid drive assembly and the diversion and heat dissipation part to start the composite heat dissipation mechanism: the insulating oil in the diversion part is forced to circulate and cool through the circulating pump-refrigerator closed-loop cooling circuit, and at the same time, the micro-motor drives the screw to drive the lifting oiler to move back and forth in the heat exchange chamber. Its porous structure oiling cylinder and spoiler beads continuously ooze insulating oil during rotation, forming a dynamic micro-circulation coating, which not only realizes uniform coverage of the surface of the heat conductive layer, but also significantly improves the heat dissipation efficiency through the synergistic effect of oil circuit circulation and mechanical movement, and finally achieves efficient composite heat dissipation of the energy storage element.

[0017] The present invention drives the tension rod to tilt centripetally through the guide tilt arm, and completes the hatch closure through the linkage of the cabin plate with the traction rope, thereby realizing high temperature warning and component locking; at the same time, the cooling air flow of the fan is discharged downward through the gaps in the four corners, maintaining efficient heat dissipation while ensuring that the cabin plate is closed, thereby realizing the coordinated operation of protection and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention and its partial cross-section.

[0020] Figure 3 For the present invention Figure 2 The diagram of the remaining structure without the auxiliary adjustment assembly, fan, fluid drive assembly and controller.

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the elevation angle of the medium structure.

[0022] Figure 5 It is a schematic diagram of the connection structure of the heat dissipation assembly, retractable transmission component, adjustment member and guide part of the present invention.

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0024] Figure 7 It is a structural schematic diagram of the diversion and heat dissipation part of the present invention.

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point B.

[0026] Figure 9 It is a schematic structural diagram of the lifting oiler of the present invention.

[0027] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at point C in the middle.

[0028] Figure 11 Schematic connection diagram of the energy storage box, tray, heat dissipation assembly, retracting and extending transmission assembly and auxiliary adjustment assembly of the present invention.

[0029] Figure 12 Schematic connection diagram of the base, telescopic cylinder, adjusting member, fan and alignment detection system of the present invention.

[0030] Figure 13 Schematic connection diagram of the diversion part and the fluid drive assembly of the present invention.

[0031] Reference numerals are: 1, energy storage box; 2, tray; 3, heat dissipation assembly; 301, outer frame body; 302, push plate; 303, diversion heat dissipation part; 3031, heat exchange cabin body; 3032, heat conduction layer; 3033, transmission cabin body; 3034, lead screw; 3035, micro motor; 3036, lifting oiler; 30361, U-shaped frame; 30362, oiling cylinder; 30363, spoiler beads; 304, piston type pusher; 305, connecting pipe; 306, bellows; 307, spring; 4, retracting and extending transmission assembly; 401, guiding inclination arm; 402, cross-wall fixed beam; 403, sliding rod; 404, retracting arm; 5, adjusting member; 6, diversion part; 601, main pipeline; 602, shunt branch pipe; 7, auxiliary adjustment assembly; 701, tension rod; 702, cabin plate; 703, towing rope; 8, telescopic cylinder; 9, base; 10, fan; 11, fluid drive assembly; 1101, circulation pump; 1102, cooler; 1103, delivery pipe; 12, controller; 13, signal transmitter; 14, signal receiver. Detailed implementation manners

[0032] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of the respective structures described in the following embodiments are merely examples, and a modular energy storage device for a high-voltage power system according to the present invention is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0033] Refer to Figures 1 - 13The present invention provides a modular energy storage device for a high-voltage power system, comprising an energy storage box 1, wherein a tray 2 with a three-dimensional constraint mechanism is installed at the bottom of the inner cavity of the energy storage box 1, and the three-dimensional constraint mechanism arranged on the top wall thereof can accurately wrap the bottom end of the energy storage element; an annular airflow channel is formed between the energy storage element located above the tray 2 and the inner wall of the energy storage box 1; a plurality of windows are evenly arranged on the circumferential side wall of the energy storage box 1, and a heat dissipation assembly 3 is assembled on the periphery of each window; a retractable transmission assembly 4 is correspondingly configured on the outside of each heat dissipation assembly 3, a height adjustment device is built in the base 9 installed at the bottom of the energy storage box 1, and an adjustment member 5 that can move vertically along the base 9 is assembled on the base 9, and the adjustment member 5 is transmission-connected to the retractable transmission assembly 4; a fan 10 arranged inside the base 9 is located directly below the height adjustment device; a guide portion 6 arranged on the outer periphery of the energy storage box 1 is located on the lower side of the heat dissipation assembly 3, and is connected in series with the fluid drive assembly 11 installed on the outer side of the base 9 through the guide portion 6 and the heat dissipation assembly 3 of the circumferential array, thereby forming a closed-loop cooling circuit system.

[0034] In this embodiment, it should be specifically explained that the tray 2 is configured in a grid pattern, with its four corners precisely machined to fit snugly with the inner corners of the energy storage box 1, and rigidly connected using high-strength bolts. The three-dimensional constraint mechanism provided on the upper surface of the tray 2 is composed of four sets of vertical angle plates. When the energy storage element is placed inside the energy storage box 1, the three-dimensional constraint mechanism of the tray 2 can achieve all-round positioning and locking of the element, effectively suppressing displacement or shaking caused by external forces such as vibration and impact during transportation or operation. The installation position of the tray 2 must ensure that it is located below the window on the side wall of the energy storage box 1, and its arrangement must not interfere with the centripetal convergent motion trajectory of the multiple heat dissipation assemblies 3 distributed along the circumferential array. The height adjustment device can be replaced by a telescopic cylinder 8 or other devices with equivalent height adjustment functions. The specific implementation of the telescopic cylinder 8 includes but is not limited to a pneumatic cylinder, a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic cylinder 8 must be accurately inserted into the central positioning hole of the adjustment member 5 and rigidly connected and assembled therewith. The base of the telescopic cylinder 8 is rigidly connected to the inner wall of the base 9 through a mounting bracket. The adjusting member 5 is provided with an integrally formed radial wing plate on its circumference. The wing plate extends radially and passes through a vertical guide opening preset on the side wall of the base 9. A groove is provided at the end of the wing plate. In this article, all the positional relationships we discuss about front, back, left, and right are based on Figures 1 - 3 These directions are defined by the perspective presented. They have no actual geographical or physical meaning. They are merely a reference framework to help readers understand the content of the article more intuitively. In this way, we can more clearly show the relative position relationship between the various parts, making the entire discussion process easier to understand and follow. Please note that this custom direction identification is only for internal use in this article and does not represent any absolute direction or position in the real world.

[0035] Referring to Figures 2 - 10 , the heat dissipation assembly 3 is composed of an outer frame body 301, a push plate 302, a flow guiding and heat dissipation part 303, a piston type pusher 304, a connecting pipe 305, a corrugated pipe 306 and a spring 307. The outer frame body 301 is installed on the outer side of the circumferential window of the energy storage box 1. The push plate 302 and the flow guiding and heat dissipation part 303 are arranged in sequence from outside to inside in its inner cavity. The two are fixedly assembled and only in surface contact with the outer frame body 301. The piston type pusher 304 arranged on the outer side of the outer frame body 301 is integrally formed by a pressing plate and a double connecting rod. The double connecting rod movably penetrates through the outer frame body 301 and is rigidly connected to the push plate 302. A spring 307 is wound on the surface of the double connecting rod between the pressing plate and the outer frame body 301. A corrugated pipe 306 nested in a matching manner is adopted inside the connecting pipe 305 installed on the side wall of the outer frame body 301. One end of it is hermetically connected to the connecting pipe 305, and the other end is butted against the flow guiding and heat dissipation part 303; The retracting and extending transmission assembly 4 is composed of a guiding inclination arm 401, a cross-wall fixed beam 402, a sliding rod 403 and a retracting arm 404. The two ends of the cross-wall fixed beam 402 extend across the outer frame body 301 and are fixedly connected to the side wall of the energy storage box 1. The guiding inclination arm 401 is integrally formed by a guiding section and an inner inclination section. A corner node is formed at the junction of the two sections. The corner node is rotatably connected to the outer extending shaft end of the cross-wall fixed beam 402. Tracks are symmetrically arranged on the side wall of the guiding section. The sliding rod 403 is slidably arranged in the tracks. Its shaft end is hinged to the retracting arm 404, and the other end of the retracting arm 404 is rigidly connected to the pressing plate of the piston type pusher 304. The inner inclination section of the guiding inclination arm 401 penetrates through the vertical guiding opening of the base 9 and extends into its inner cavity. The wing plate end groove of the adjusting part 5 forms a contact type limit fit with the inner inclination section of the guiding inclination arm 401; In this embodiment, it should be specifically noted that the flow guiding and heat dissipation part 303 includes a heat exchange cabin body 3031, a heat conducting layer 3032, a transmission cabin body 3033, a lead screw 3034, a micro motor 3035 and a lifting oiler 3036. The transmission cabin body 3033 is fixedly connected to the bottom of the heat exchange cabin body 3031, and the two are jointly installed on the inner side of the push plate 302. A lead screw 3034 is rotatably arranged at the center of the heat exchange cabin body 3031, and its bottom end is coaxially assembled with the micro motor 3035 in the transmission cabin body 3033. The lifting oiler 3036 moving in the inner cavity of the heat exchange cabin body 3031 is in transmission connection with the lead screw 3034. A heat conducting layer 3032 is arranged on the side wall of the heat exchange cabin body 3031 far away from the push plate 302; The lifting oiler 3036 can move vertically along the inner cavity of the heat exchange cabin 3031. The lifting oiler 3036 includes a U-shaped frame 30361, an oiling cylinder 30362 and turbulence beads 30363. The U-shaped frame 30361 is threadedly connected to the lead screw 3034. An oiling cylinder 30362 is rotatably connected inside the U-shaped frame 30361. The oiling cylinder 30362 is attached to the inner surface of the heat conduction layer 3032. The oiling cylinder 30362 is filled with a plurality of turbulence beads 30363 distributed irregularly. Both the oiling cylinder 30362 and the turbulence beads 30363 are of a hollow porous structure. The liquid level in the heat exchange cabin 3031 only needs to submerge the initial position of the lifting oiler 3036. The corrugated pipe 306 penetrates through the push plate 302 and is fixedly connected to the heat exchange cabin 3031. This connection structure has dynamic adaptability. That is, the corrugated pipe 306 can generate elastic deformation with the relative movement of the push plate 302 and the flow guiding and heat dissipating part 303, while maintaining the integrity and flow performance of the oil passage unaffected.

[0036] Refer to Figures 2 - 6 and Figure 13 , the flow guiding part 6 is composed of a main pipe 601 and shunt branch pipes 602. The main pipe 601 penetrates through the cross-wall fixed beam 402 to achieve axial positioning. A number of shunt branch pipes 602 are evenly distributed circumferentially on the top of the main pipe 601. Each shunt branch pipe 602 is fixedly connected to the main pipe 601. At the same time, the other end of each shunt branch pipe 602 is connected to the connecting pipe 305 to form a complete communication path. The flow guiding part 6 and the fluid driving assembly 11 form a fluid communication system. The fluid driving assembly 11 is composed of a circulation pump 1101, a refrigerator 1102 and a delivery pipe 1103. The circulation pump 1101 is fixedly installed on the outer surface of the base 9. Its pump feeding end and discharging end are respectively connected to the refrigerator 1102 through the delivery pipe 1103. At the same time, the refrigerator 1102 is connected to the main pipe 601 through another group of delivery pipes 1103, thereby forming a stable one-way cold flow circulation path inside the flow guiding part 6.

[0037] Refer to Figure 11 , an auxiliary adjustment assembly 7 can be installed above the guiding inclination arms 401 that can be arranged oppositely on the left and right or front and back sides. The auxiliary adjustment assembly 7 includes a tension rod 701, a cabin plate 702 and a traction rope 703. The tension rod 701 is fixedly connected to the top end of the guiding inclination arm 401. The cabin plate 702 is hinged at the hatch of the energy storage box 1. The tension rod 701 and the cabin plate 702 are connected by the traction rope 703. When the guiding inclination arm 401 is in the neutral position, the tension rod 701 applies a constant tension to the cabin plate 702 through the traction rope 703 to keep the cabin plate 702 in a preset half-open angle state.

[0038] Refer to Figure 12A positioning detection system consisting of a signal transmitter 13 and a signal receiver 14 is provided inside the base 9; the signal transmitter 13 is fixedly mounted on the telescopic motion end of the telescopic cylinder 8, and the signal receiver 14 is arranged at the corner position of the inner wall of the base 9; when the signal receiver 14 completes spatial alignment with the signal transmitter 13 and successfully receives the positioning signal emitted by it, it can output the corresponding position determination signal to the controller 12 serving as the control unit; the controller 12 synchronously outputs control instructions for the fluid drive assembly 11 and the diversion and heat dissipation part 303 based on the signal.

[0039] Working principle of the present invention: A temperature threshold (35°C) is set for the operating temperature of the energy storage element, dividing it into a normal temperature operating mode and a high temperature operating mode. The energy storage element has a built-in temperature monitoring system (such as a temperature sensor) to detect the operating temperature in real time and determine the current mode, while outputting a control signal corresponding to the temperature mode to the controller 12. When the components are in normal temperature operation mode, the fan 10 is controlled to vertically blow air to the energy storage components stored on the tray 2 and located in the energy storage box 1, causing natural airflow to flow vertically upward along the tray 2. A convection heat exchange channel is formed through the circumferential gap between the energy storage components and the energy storage box 1. After the airflow completes heat exchange with the energy storage components, it carries the heat and is discharged from the open hatch at the top of the energy storage box 1, achieving continuous heat dissipation. At this time, the hatch 702 is in a half-open state, indicating that the energy storage components are at normal temperature and can be safely removed. When the component is in the high-temperature operation mode, the telescopic end of the telescopic cylinder 8 drives the adjusting member 5 assembled therewith to move downward in the vertical direction. At this time, the grooves at the ends of the wing plates around the adjusting member 5 continuously press against the inner-inclined section of the lower half of the guiding inclination arm 401. During the downward movement, a radially outward thrust is generated, forcing the guiding inclination arm 401 to perform a deflection movement from the outside to the inside with the shaft end of the cross-wall fixed beam 402 as the rotation center; this deflection action causes the guiding section of the upper half of the guiding inclination arm 401 to approach the energy storage box 1 side, triggering the circumferentially arranged guiding inclination arms 401 to synchronously complete the compound movement of radial expansion at the bottom end and centripetal aggregation at the top end; during the inward buckling process of the guiding section of the guiding inclination arm 401, the sliding rod 403 slides upward along the tracks on the front and rear side walls of the guiding section. At the same time, the retracting arm 404 adaptively adjusts its posture through its rotational connection structure with the sliding rod 403, always maintaining a horizontal stress state and transmitting the thrust of the guiding inclination arm 401 to the piston-type propulsion member 304; after overcoming the elastic resistance of the spring 307, this thrust drives the push plate 302 to move through the double-link drive of the piston-type propulsion member 304, and then drives the push plate 302 and the flow guiding and heat dissipation part 303 to perform centripetal displacement, finally making the four groups of circumferentially evenly distributed flow guiding and heat dissipation parts 303 closely fit the side wall of the energy storage element, completing the free switching of the heat dissipation mode; when the telescopic end of the telescopic cylinder 8 drives the assembled signal transmitter 13 to move downward and aligns with the signal receiver 14 at the inner wall corner of the base 9, the signal receiver 14 receives the signal emitted by the signal transmitter 13 and restores the communication connection, thereby determining that the shape-changing action is completed and the mode is switched; the signal receiver 14 immediately sends a determination signal to the controller 12, and the controller 12 synchronously outputs control instructions for the fluid drive assembly 11 and the flow guiding and heat dissipation part 303 according to this signal: First, start the circulation pump 1101 and the cooler 1102. The two are connected in series through the delivery pipe 1103 to form a closed-loop cold path. This cold path connects the two ends of the main pipe 601 to generate a one-way cold flow inside the flow guiding part 6, forcibly sucking the insulating oil in the multiple heat exchange compartments 3031 to the cold path through the flow guiding part 6 for cooling and then injecting it back into the heat exchange compartments 3031 to achieve active refrigeration; synchronously start the micro-motor 3035 to drive the screw rod 3034 connected thereto to perform periodic forward and reverse rotations, driving the lift-type oiler 3036 sleeved with the thread to perform reciprocating axial movement along the inner cavity of the heat exchange compartment 3031 - during this process, the lift-type oiler 3036 not only performs basic coating on the adhered heat conducting layer 3032 by adhering the insulating oil, but also achieves efficiency enhancement by means of its hollow and porous oiling cylinder 30362 and several built-in turbulence beads 30363: when the oiling cylinder 30362 moves on the surface of the heat conducting layer 3032, its continuous rotational movement causes the insulating oil to continuously seep out from the holes on the surface of the oiling cylinder 30362 and the turbulence beads 30363, forming a dynamic microcirculation coating mechanism, significantly improving the coverage uniformity and heat dissipation efficiency of the insulating oil on the surface of the heat conducting layer 3032, and finally realizing the composite enhanced heat dissipation of the energy storage element; During the process of the inward buckling of the guiding section of the guiding inclination arm 401, the tension rods 701 connected to the tops of its left and right branches synchronously generate centripetal inclination, driving the cabin plate 702 suspended by the traction rope 703 to lower towards the hatch of the energy storage box 1. Finally, the symmetrically arranged cabin plates 702 on the left and right complete the closing action of the top of the hatch, forming a warning sign in a high-temperature state and restricting the removal of the energy storage element. At this time, the vertical blast airflow generated by the fan 10 turns back downward through the circuitous channel formed by the gaps at the four corners between the energy storage element and the energy storage box 1, realizing the compatible operation of the cabin plate 702 and the cooling system of the fan 10 on the premise of maintaining the air circulation, so that the heat exchange airflow is discharged from below; When the temperature of the energy storage element drops to the normal operating threshold, the telescopic end of the telescopic cylinder 8 drives the adjusting member 5 to perform a reverse reset action, and the components of the system are restored to the initial standby state through the reverse movement trajectory.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention; equivalent substitutions or modifications are made according to the technical plan and its improvement concept of the present invention, and these should all be included under the protection of the present invention.

Claims

1. A modular energy storage device for a high-voltage power system, comprising an energy storage box (1). At the bottom of the inner cavity of the energy storage box (1), a tray (2) with a three-dimensional constraint mechanism is installed. An annular air flow channel is formed between the energy storage element located above the tray (2) and the inner wall of the energy storage box (1). A plurality of windows are evenly opened on the circumferential side wall of the energy storage box (1), and a heat dissipation assembly (3) is assembled around each window. It is characterized in that: An external retractable transmission component (4) is correspondingly configured for each heat dissipation assembly (3). A height adjustment device is built into a base (9) installed at the bottom of the energy storage box (1), and an adjustment member (5) that can move vertically along the base (9) is assembled thereon. The adjustment member (5) is in transmission connection with the retractable transmission component (4); a fan (10) is arranged inside the base (9) below the height adjustment device; The heat dissipation assembly (3) includes an outer frame body (301). The outer frame body (301) is installed on the outer side of the circumferential window of the energy storage box (1). A push plate (302) and a flow guiding and heat dissipation part (303) are arranged in sequence from outside to inside in its inner cavity. The two are fixedly assembled and only in surface contact with the outer frame body (301); a piston type propulsion member (304) configured on the outer side of the outer frame body (301) is integrally formed by a pressing plate and a double connecting rod. The double connecting rod movably penetrates through the outer frame body (301) and is rigidly connected to the push plate (302), and a spring (307) is wound on the surface of the double connecting rod between the pressing plate and the outer frame body (301); The retractable transmission component (4) is composed of a guiding inclination arm (401), a cross-wall fixed beam (402), a sliding rod (403) and a yielding arm (404). The two ends of the cross-wall fixed beam (402) extend across the outer frame body (301) and are fixedly connected to the side wall of the energy storage box (1); the guiding inclination arm (401) is integrally formed by a guiding section and an inward inclination section, and a corner node is formed at the junction of the two sections. The corner node is rotatably connected to the outer extending shaft end of the cross-wall fixed beam (402); tracks are symmetrically opened on the side wall of the guiding section. The sliding rod (403) is slidably arranged in the tracks. Its shaft end is hinged to the yielding arm (404), and the other end of the yielding arm (404) is rigidly connected to the pressing plate of the piston type propulsion member (304).

2. The modular energy storage device for a high-voltage power system according to claim 1, characterized in that: The flow guiding and heat dissipation part (303) includes a heat exchange cabin body (3031), a heat conduction layer (3032), a transmission cabin body (3033), a lead screw (3034), a micro motor (3035) and a lifting oiler (3036); the transmission cabin body (3033) is fixedly connected to the bottom of the heat exchange cabin body (3031), and the two are jointly installed inside the push plate (302); a lead screw (3034) is rotatably arranged at the center of the heat exchange cabin body (3031), and its bottom end is coaxially assembled with the micro motor (3035) inside the transmission cabin body (3033); the lifting oiler (3036) moving in the inner cavity of the heat exchange cabin body (3031) is in transmission connection with the lead screw (3034); a heat conduction layer (3032) is arranged on the side wall of the heat exchange cabin body (3031) away from the push plate (302).

3. The modular energy storage device for a high-voltage power system according to claim 2, wherein: The lift oiler (3036) includes a U-shaped frame (30361), an oiling cylinder (30362) and spoiler beads (30363). The U-shaped frame (30361) is threadedly connected to the lead screw (3034). An oiling cylinder (30362) is rotatably connected inside the U-shaped frame (30361). The oiling cylinder (30362) is attached to the inner surface of the heat-conducting layer (3032). The oiling cylinder (30362) is filled with randomly distributed spoiler beads (30363). Both the oiling cylinder (30362) and the spoiler beads (30363) are of a hollow porous structure.

4. The modular energy storage device for a high-voltage power system according to claim 2, characterized in that: Inside the connection pipe (305) installed on the side wall of the outer frame body (301), a corrugated pipe (306) is nested in a matching manner. One end of it is hermetically connected to the connection pipe (305), and the other end penetrates through the push plate (302) and is fixedly connected to the heat exchange cabin body (3031).

5. The modular energy storage device for a high-voltage power system according to claim 1, characterized in that: Radially extending wing plates integrally formed are provided circumferentially on the adjusting member (5). The wing plates extend radially and penetrate through a vertically guiding opening preset on the side wall of the base (9). Grooves are provided at the ends of the wing plates. The inner inclined section of the guiding inclination arm (401) extends into the inner cavity of the base (9) after penetrating through the vertically guiding opening of the base (9). A contact type limiting fit is formed between the groove at the end of the wing plate of the adjusting member (5) and the inner inclined section of the guiding inclination arm (401).

6. The modular energy storage device for a high-voltage power system according to claim 1 or 5, characterized in that: The height adjusting device uses a telescopic cylinder (8). Its telescopic end needs to be accurately inserted into the central positioning hole of the adjusting member (5) and rigidly connected and assembled with it. The base of the telescopic cylinder (8) is rigidly connected to the inner wall of the base (9) through a mounting bracket.

7. The modular energy storage device for a high-voltage power system according to claim 1, wherein: The flow guiding part (6) arranged on the outer periphery of the energy storage tank (1) is located below the heat dissipation assembly (3). It is connected in series with the circumferentially arrayed heat dissipation assemblies (3) through the flow guiding part (6) and the fluid driving assembly (11) installed on the outer side of the base (9).

8. The modular energy storage device for a high-voltage power system according to claim 7, characterized in that: The flow guiding part (6) and the fluid driving assembly (11) form a fluid communication system. The fluid driving assembly (11) is composed of a circulation pump (1101), a refrigerator (1102) and a delivery pipe (1103). The circulation pump (1101) is fixedly installed on the outer surface of the base (9). Its pump feeding end and discharging end are respectively connected to the refrigerator (1102) through pipelines of the delivery pipe (1103). At the same time, the refrigerator (1102) is connected to the flow guiding part (6) through pipelines of another group of delivery pipes (1103). Thus, a stable one-way cold flow circulation path is formed inside the flow guiding part (6). The flow guiding part (6) is connected to the flow guiding and heat dissipating part (303).

9. The modular energy storage device for a high-voltage power system according to claim 1, characterized in that: An auxiliary adjusting assembly (7) is installed above the guiding inclination arms (401) arranged oppositely on the left and right or front and back sides. The auxiliary adjusting assembly (7) includes a tension rod (701), a cabin plate (702) and a traction rope (703). The tension rod (701) is fixedly connected to the top end of the guiding inclination arm (401). The cabin plate (702) is hinged at the hatch of the energy storage tank (1). A traction rope (703) is connected between the tension rod (701) and the cabin plate (702).

10. The modular energy storage device for a high-voltage power system according to claim 6, characterized in that: Inside the base (9), there is a alignment detection system composed of a signal transmitter (13) and a signal receiver (14); the signal transmitter (13) is fixedly installed at the telescopic end of the telescopic cylinder (8), and the signal receiver (14) is arranged at the corner position of the inner wall of the base (9).

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