Carrying cable type gravity flow energy storage system

Abstract

The utility model relates to the technical field of gravity energy storage, in particular to a carrying cable type gravity flow energy storage system which comprises a carrying subsystem, an upper storage yard, a lower storage yard and an energy storage block, the carrying subsystem comprises an energy conversion unit, a transmission unit and an energy storage block carrying unit, and the transmission unit comprises two carrying cables which are vertically arranged in parallel; the two opposite ends of the energy storage block carrying unit are fixedly connected with the two carrying cables in a one-to-one correspondence mode, and the energy conversion unit is in transmission connection with the transmission unit so that energy storage can be achieved by moving the energy storage blocks from the lower storage yard to the upper storage yard. And the energy storage blocks are moved from the upper storage yard to the lower storage yard to realize energy release. The utility model aims to provide a carrying cable type gravity flow energy storage system aiming at at least one technical problem related in the background technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gravity energy storage, in particular to a carrying cable type gravity flow energy storage system. BACKGROUND

[0002] In recent years, the demand for electricity has maintained a steady growth trend, and the characteristics of peak load have become increasingly prominent. However, the supply of coal and natural gas is tight, and the price continues to be at a high level, and the operation of thermal power enterprises is difficult, coupled with the uncertainty of energy consumption control and water and electricity output, and the electricity supply in some areas is tight. Therefore, new power generation technologies such as wind power and photovoltaic have emerged, and their proportion in energy utilization is also gradually increasing. However, renewable energy dominated by wind power and photovoltaic has the characteristics of randomness, volatility and intermittency, and is an unstable energy source that cannot fully meet social electricity demand. Therefore, it is necessary to use energy storage systems to regulate power generation and electricity demand. The current energy storage forms include gravity type energy storage, electrochemical energy storage, chemical energy storage, and thermal energy storage. The electrochemical energy storage, chemical energy storage and thermal energy storage have the problem of energy loss, are not suitable for long-term energy storage, and generally have safety problems; the pumped storage and flywheel energy storage in the gravity type energy storage have high requirements for terrain and space, and are difficult to be widely deployed. Therefore, gravity energy storage based on high height difference for power generation has gradually attracted attention. The existing gravity energy storage system generally uses large loads to be lifted one by one to realize energy storage and energy release, which makes the gravity energy storage system have certain requirements for environmental factors such as terrain when implemented, thereby limiting the promotion and application of the gravity energy storage system technology. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to solve at least one technical problem involved in the background art, and provides a carrying cable type gravity flow energy storage system.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] The present application provides a carrying cable type gravity flow energy storage system, which comprises a carrying subsystem, an upper stockyard, a lower stockyard and an energy storage block; the carrying subsystem comprises an energy conversion unit, a transmission unit and an energy storage block carrying unit; the transmission unit comprises two carrying cables arranged side by side and vertically; the opposite ends of the energy storage block carrying unit are fixedly connected with the two carrying cables one by one; the energy conversion unit is in transmission connection with the transmission unit, so as to realize energy storage by moving the energy storage block from the lower stockyard to the upper stockyard, and to realize energy release by moving the energy storage block from the upper stockyard to the lower stockyard;

[0006] The transmission unit comprises two carrying cables arranged side by side and vertically;

[0007] The energy storage block carrying unit comprises a carrying vehicle and an even number of rope connecting assemblies, each of the rope connecting assemblies is symmetrically distributed on two sides of the carrying vehicle, and the carrying vehicle is fixedly connected with the carrying rope through at least two symmetrically arranged rope connecting assemblies. The carrying vehicle comprises a vehicle body and an energy storage block connecting body.

[0008] The rope connecting assembly comprises a fixed connection end, a jaw is formed on the fixed connection end, and the fixed connection end is wrapped around the carrying rope through the jaw part in the circumferential direction of the carrying rope. The direction of the jaw is perpendicular to the extension direction of the carrying rope.

[0009] The energy conversion unit is drivingly connected with the transmission unit to realize energy storage by moving the energy storage block from the lower yard to the upper yard, and to realize energy release by moving the energy storage block from the upper yard to the lower yard.

[0010] Optionally, the carrying subsystem comprises a plurality of the energy storage block carrying units, each of the energy storage block carrying units is uniformly distributed along the carrying rope; each of the energy storage block carrying units is used to move along a clockwise track with the carrying rope, and each of the energy storage block carrying units is also used to move along an anticlockwise track with the carrying rope.

[0011] Optionally, the transmission unit further comprises a rope driving assembly and a rope reversing assembly; the axial direction of the rope driving assembly and the axial direction of the rope reversing assembly are both parallel to a first direction; the rope driving assembly is drivingly connected with the energy conversion unit and drivingly cooperates with the rope reversing assembly through the two carrying ropes; the first direction is horizontally arranged.

[0012] Optionally, the carrying vehicle comprises a vehicle body and an energy storage block connecting body; the energy storage block connecting body is detachably connected with the energy storage block.

[0013] Optionally, the vehicle body comprises a hanger rotating shaft and two mounting plates arranged perpendicularly to the hanger rotating shaft, the rope connecting assembly is fixed to the mounting plate, the axial direction of the hanger rotating shaft is parallel to a first direction, and the two mounting plates are pivotally connected to the two ends of the hanger rotating shaft one by one, and the energy storage block connecting body is mounted on the hanger rotating shaft; the first direction is horizontally arranged.

[0014] Optionally, the vehicle body comprises a vehicle frame and two mounting plates fixed to the vehicle frame, the two mounting plates are located at the two ends of the vehicle frame in a first direction, the mounting plate is fixed with the rope connecting assembly in the first direction, and the energy storage block connecting body is fixed to the vehicle frame; the first direction is horizontally arranged.

[0015] Optionally, each of the rope connection assemblies located on the same side of the vehicle body in a first direction is arranged along the extension direction of the carrying cable; and the first direction is horizontally arranged.

[0016] Optionally, the rope driving assembly comprises two driving wheels, the two driving wheels are one-to-one corresponding and drivingly matched with the two carrying cables, the energy conversion unit is used to drive the two driving wheels to synchronously rotate, and the energy conversion unit is also used to drive the two driving wheels to respectively rotate; and the rope reversing assembly comprises two reversing wheels, the two reversing wheels are used to one-to-one corresponding and drivingly matched with the two carrying cables.

[0017] Alternatively, the rope driving assembly comprises a driving winding drum, and the rope reversing assembly comprises a reversing winding drum.

[0018] Optionally, two first rope matching grooves extending along the circumference of the driving winding drum are formed on the driving winding drum, and two second rope matching grooves extending along the circumference of the reversing winding drum are formed on the reversing winding drum; a friction block made of friction material is inlaid in each of the first rope matching grooves and the second rope matching grooves; and each of the first rope matching grooves and the second rope matching grooves located on the same side in the first direction is matched with the same carrying cable.

[0019] Optionally, the carrying cable type gravity flow energy storage system provided in the application comprises a plurality of the carrying subsystems, and each of the carrying subsystems is arranged in a transverse direction or each of the carrying subsystems is arranged in a longitudinal direction.

[0020] The technical scheme provided in the application can achieve at least one of the following beneficial effects:

[0021] The carrying cable type gravity flow energy storage system provided in the application adopts two carrying cables to jointly carry and pull the energy storage block carrying unit loaded with energy storage blocks, and the carrying capacity is stronger than that of the prior art gravity energy storage system which only adopts one carrying cable to carry and pull the energy storage blocks. Therefore, according to the geographical environment of the construction site, the number of support structures arranged between the upper stockyard and the lower stockyard can be appropriately reduced, or even the support structures arranged between the upper stockyard and the lower stockyard are not needed, thereby reducing the requirement of the gravity flow energy storage system on the geographical environment, improving the adaptability of the gravity flow energy storage system to the geographical environment, and making the gravity flow energy storage system more easily popularized and applied.

[0022] The additional technical features of the application and the advantages thereof will be more apparent in the following description or can be understood by the specific implementation of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings needed to be used in the description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0024] Figure 1 Partial structural schematic diagram of one embodiment of the carrying cable type gravity flow energy storage system provided by the embodiments of the present application;

[0025] Figure 2 Structural schematic diagram of the assembly of one embodiment of the rope driving assembly provided by the embodiments of the present application and the energy conversion unit;

[0026] Figure 3 Structural schematic diagram of one embodiment of the energy conversion unit loaded with energy storage blocks provided by the embodiments of the present application;

[0027] Figure 4 Structural schematic diagram of another embodiment of the energy conversion unit loaded with energy storage blocks provided by the embodiments of the present application;

[0028] Figure 5 Structural schematic diagram of one embodiment of the rope connecting assembly provided by the embodiments of the present application;

[0029] Figure 6 Partial structural schematic diagram of another embodiment of the carrying cable type gravity flow energy storage system provided by the embodiments of the present application;

[0030] Figure 7 Structural schematic diagram of the assembly of another embodiment of the rope driving assembly provided by the embodiments of the present application and the energy conversion unit.

[0031] Reference signs:

[0032] 01, rope driving assembly; 02, energy conversion unit;

[0033] 03, rope guiding unit; 04, carrying cable;

[0034] 05, energy storage block carrying unit; 06, rope reversing assembly;

[0035] 07, energy storage block; 08, driving wheel;

[0036] 09, rope connecting assembly; 10, container groove;

[0037] 11, energy storage block connecting body; 12, hanger rotating shaft;

[0038] 13, vehicle frame; 14, jaw

[0039] 15, fixed connection end; 17, connecting rotating shaft;

[0040] 18, friction block; 19, first rope matching groove;

[0041] 20, mounting plate; 21, first connecting shaft;

[0042] 22, driving winding drum. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] At present, remote areas such as mountainous areas or hilly areas are generally in a state of general tension of power supply, and are more in need of deployment of gravity energy storage systems. However, the terrain in these areas is often complex, with steep slopes, which is not conducive to the implementation and popularization of large systems. At the same time, in order to support a relatively large weight load, the existing gravity energy storage system often needs to arrange more support structures on the load travel route to provide effective support for the load. In mountainous areas or hilly areas, it is often difficult to implement the construction of these support structures on steep slopes or rugged complex terrain, which limits the popularization and application of gravity energy storage system technology.

[0047] AsFigures 1 to 7 As shown, the application provides a carrying cable type gravity flow energy storage system, which comprises a carrying subsystem, an upper stockyard, a lower stockyard and an energy storage block 07, the carrying subsystem comprises an energy conversion unit 02, a transmission unit and an energy storage block carrying unit 05, the transmission unit comprises two carrying cables 04 arranged side by side and vertically, the opposite ends of the energy storage block carrying unit are fixedly connected with the two carrying cables 04 respectively, and the rope driving assembly is in transmission connection with the energy conversion unit 02, so as to realize energy storage by moving the energy storage block 07 from the lower stockyard to the upper stockyard, and realize energy release by moving the energy storage block 07 from the upper stockyard to the lower stockyard.

[0048] In the embodiment of the application, the two carrying cables 04 arranged side by side and vertically means that the two carrying cables are arranged side by side, and the length extension direction of the carrying cable 04 is vertical, which includes a direction inclined relative to the vertical direction; one form of the energy conversion unit 02 comprises a motor and a generator, in the energy storage charging process, the motor is driven to rotate by electric energy, and the energy storage block carrying unit 05 carrying the energy storage block 07 is driven to move upward by the transmission unit, in the energy release process, the energy storage block carrying unit 05 carrying the energy storage block 07 moves downward due to gravity, and at the same time, the generator is driven to generate electricity by the transmission unit, so as to realize the conversion of gravity potential energy into electric energy; another form of the energy conversion unit 02 is a motor and a generator integrated machine, i.e. a motor-generator, in the energy storage charging process, the motor-generator is driven to rotate by electric energy, and the energy storage block carrying unit 05 carrying the energy storage block 07 is driven to move upward by the transmission unit, in the energy release process, the energy storage block carrying unit 05 carrying the energy storage block 07 moves downward due to gravity, and at the same time, the generator is driven to rotate reversely by the transmission unit, so as to realize the conversion of gravity potential energy into electric energy. It can be understood that the carrying cable 04 provided in the embodiment of the application has the functions of pulling and bearing heavy objects.

[0049] The carrying cable type gravity flow energy storage system provided by the application adopts two carrying cables 04 to jointly carry and pull the energy storage block carrying unit 05 loaded with energy storage blocks 07. Compared with the existing gravity energy storage system which only adopts one carrying cable 04 to realize carrying and pulling of the energy storage blocks 07, the carrying ability is stronger. Thus, according to the geographical environment of the construction site, the number of support structures (such as columns) arranged between the upper stockyard and the lower stockyard can be appropriately reduced, or even no support structure needs to be arranged between the upper stockyard and the lower stockyard, thereby reducing the requirement of the gravity flow energy storage system on the terrain environment and improving the adaptability of the gravity flow energy storage system to the geographical environment, so that the gravity flow energy storage system is easier to popularize and apply. Meanwhile, the existing gravity energy storage system is specially provided with a carrying device (such as a carrying track or a carrying cable) independent of the traction cable to carry the energy storage block carrying unit 05 and the energy storage blocks 07. The carrying device often has a large weight and needs to be supported by an additional support structure, which limits the popularization and application of the gravity energy storage system in mountainous areas, hilly areas or other complex terrains. The carrying cable type gravity flow energy storage system provided by the application adopts two carrying cables 04 to realize carrying and pulling of the energy storage block carrying unit 05 and the energy storage blocks 07, without the need for a carrying device independent of the traction cable, thereby reducing the number of support structures required, or even eliminating the need for a support structure, further reducing the requirement of the gravity flow energy storage system on the terrain environment and improving the adaptability of the gravity flow energy storage system to the geographical environment, so that the gravity flow energy storage system is easier to popularize and apply. In addition, compared with the existing gravity energy storage system which is specially provided with a carrying device independent of the traction cable, the carrying cable type gravity flow energy storage system provided by the application does not need to be specially provided with a carrying device independent of the traction cable, and the structure is simpler, which improves the convenience of construction and further improves the adaptability of the gravity flow energy storage system to the geographical environment, so that the gravity flow energy storage system is easier to popularize and apply. Moreover, the existing gravity energy storage system which adopts a single carrying cable 04 to transport energy storage blocks 07 has poor stability and is prone to swinging and shaking of the energy storage blocks 07 during movement. Especially in mountainous areas, hilly areas and other relatively open areas, the wind speed is usually large, which aggravates the degree of swinging and shaking of the energy storage blocks 07 during movement, and has a large safety hazard. The carrying cable type gravity flow energy storage system provided by the application connects the two ends of the energy storage block carrying unit 05 to the two carrying cables 04 one by one, so that the two carrying cables 04 can provide a torque to resist swinging and shaking of the energy storage block carrying unit 05, and reduce the degree of swinging and shaking of the energy storage block carrying unit 05 (whether loaded with energy storage blocks 07 or not). When applied to mountainous areas, hilly areas and other areas with large wind speed, the system can run more stably and has less safety hazard.Moreover, the carrying cable type gravity flow energy storage system provided by the present application makes the two ends of the energy storage block carrying unit 05 correspondingly connected with the two carrying cables 04, which reduces the load strength of the single carrying cable 04 relative to the existing gravity energy storage system using a single carrying cable 04 to transport the energy storage block 07, effectively avoids the single-point overload risk on the carrying cable 04, and improves the safety margin of system operation; the carrying cable type gravity flow energy storage system provided by the present application makes the two ends of the energy storage block carrying unit 05 correspondingly connected with the two carrying cables 04, which improves the maximum carrying capacity relative to the existing gravity energy storage system using a single carrying cable 04 to transport the energy storage block 07, and further makes the energy storage and power generation state run efficiently, so that high-power storage and release of electric energy can be realized.

[0050] Optionally, the carrying subsystem includes a plurality of the energy storage block carrying units 05, and each of the energy storage block carrying units 05 is uniformly distributed along the carrying cable 04; each of the energy storage block carrying units 05 is configured to move along a clockwise track in circulation together with the carrying cable 04, and each of the energy storage block carrying units 05 is also configured to move along an anticlockwise track in circulation together with the carrying cable 04. In the present application, the observation angles of the clockwise and the anticlockwise should be the same, and according to different setting modes of the carrying subsystem, the positions of the clockwise and the anticlockwise observed should also be different in general, and the clockwise and the anticlockwise represent the moving directions, and the corresponding moving tracks can be similar to the shape of the edge of a waist-shaped hole, a circle or an ellipse, etc. Since each of the energy storage block carrying units 05 can move in circulation together with the carrying cable 04, each of the energy storage block carrying units 05 can continuously transport the energy storage block 07, and further form a continuous gravity flow, thereby providing conditions for forming a stable energy flow and continuous discharge. Of course, the carrying cable 04 and each of the energy storage block carrying units 05 thereon can not form a circulation, but only reciprocate linearly between the upper stockyard and the lower stockyard. In the present application, the number of the energy storage block carrying units 05 is at least two.

[0051] Optionally, the transmission unit further comprises a rope driving assembly 01 and a rope reversing assembly 06; the axial direction of the rope driving assembly 01 and the axial direction of the rope reversing assembly 06 are both parallel to the first direction; the rope driving assembly 01 is in transmission connection with the energy conversion unit 02 and is in transmission cooperation with the rope reversing assembly 06 through two carrying ropes 04; the first direction is horizontally arranged. Compared with the traditional gravity energy storage system in which the roller serving as the driving member and the reversing member is horizontally arranged, the axial direction of the roller is vertically arranged, and in the embodiment of the present application, the axial direction of the rope driving assembly 01 and the axial direction of the rope reversing assembly 06 are both horizontally arranged, thereby realizing horizontal layout and saving planar space requirement. Of course, the axial direction of the rope driving assembly 01 and the axial direction of the rope reversing assembly 06 can also be vertically arranged, or the axial direction of the rope driving assembly 01 and the axial direction of the rope reversing assembly 06 can be arranged at an angle relative to the horizontal plane.

[0052] Optionally, the energy storage block carrying unit 05 comprises a carrying vehicle and an even number of rope connecting assemblies 09 installed on the carrying vehicle; each rope connecting assembly 09 is symmetrically distributed on the two sides of the carrying vehicle, and the carrying vehicle is fixedly connected with the carrying rope 04 through at least two symmetrically arranged rope connecting assemblies 09. Compared with the detachable installation between the rope connecting assembly and the rope in the existing gravity energy storage system, in the embodiment of the present application, the rope connecting assembly 09 is fixedly connected with the carrying rope 04, which not only has a simple structure, but also does not need to frequently open and close the rope connecting assembly 09 to connect and separate the rope connecting assembly 09 and the carrying rope, thereby improving the connection reliability between the rope connecting assembly 09 and the carrying rope 04 and reducing the maintenance cost; at the same time, since the rope connecting assembly 09 bears a large load, at least two rope connecting assemblies 09 are arranged on the two sides of the carrying vehicle, which can not only improve the carrying capacity of the energy storage block carrying unit 05, but also improve the reliability of the energy storage block carrying unit 05. Of course, at least two rope connecting assemblies 09 can also be arranged on one side of the carrying vehicle, one rope connecting assembly 09 can be arranged on the other side of the carrying vehicle, or only one rope connecting assembly 09 can be arranged on the two sides of the carrying vehicle.

[0053] Optionally, the rope connecting component 09 is pivotally mounted to the carrier through a connecting pivot 17. When the energy storage block carrier unit 05 is driven by the carrier cable 04 through the rope driving component 01 or the rope reversing component 06, the carrier cable 04 is bent when adapting to the outer periphery of the rope driving component 01 or the rope reversing component 06, so that the connecting pivot 17 is pivotally mounted to the carrier, and the connecting pivot 17 at different positions is adaptively rotated when the carrier cable 04 is bent, so that the carrier cable 04 can be smoothly bent. In the embodiment of the present application, the connecting pivot 17 can be a structure of the rope connecting component 09 itself, or a bearing sleeved on the rope connecting component 09. In the embodiment of the present application, the axial direction of the connecting pivot 17 can be parallel to the first direction, or can be inclined relative to the first direction.

[0054] As shown in Figure 5 Optionally, the rope connecting component 09 includes a fixed connecting end 15, and a jaw 14 is formed on the fixed connecting end 15. The fixed connecting end 15 is partially wrapped around the carrier cable 04 through the jaw 14 in the circumferential direction of the carrier cable 04, and the jaw 14 is perpendicular to the extension direction of the carrier cable 04. In this way, the carrier cable 04 is partially wrapped around by the fixed connecting end 15 at the position where the rope connecting component 09 is arranged, so that the part of the carrier cable 04 not wrapped around by the fixed connecting end 15 can be in pressure contact with the outer periphery of the rope driving component 01 when passing through the rope driving component 01, and can be in pressure contact with the outer periphery of the rope reversing component 06 when passing through the rope reversing component 06, so that the arrangement of the rope connecting component 09 does not hinder the pressure contact between the carrier cable 04 and the rope driving component 01 and the rope reversing component 06 in the case of reliable connection between the rope connecting component 09 and the carrier cable 04. Of course, the fixed connecting end 15 can also wrap around the carrier cable 04 at the corresponding position by 360°, or the rope connecting component and the carrier cable can be detachably mounted.

[0055] As shown in Figure 1 and Figure 3 Optionally, the carrier includes a carrier body and an energy storage block connecting body 11, the energy storage block connecting body 11 and the rope connecting component 09 are both mounted to the carrier body, and the energy storage block connecting body 11 is detachably connected to the energy storage block 07. Further, the energy storage block 07 can be loaded and unloaded on the energy conversion unit 02.

[0056] Optionally, the vehicle body comprises a hanger shaft 12 and two mounting plates 20 arranged perpendicularly to the hanger shaft 12, the rope connecting assembly 09 is fixed to the mounting plates 20, the axial direction of the hanger shaft 12 is parallel to the first direction, the two mounting plates 20 are pivotally connected to the two ends of the hanger shaft 12 respectively, the mounting plates 20 are fixed with the rope connecting assembly 09 in the first direction, and the energy storage block connecting body 11 is mounted on the hanger shaft 12. In this way, the mounting plate 20 can pivot relative to the energy storage block connecting body 11 mounted on the hanger shaft 12, and when the energy storage block connecting body 11 is fixed with the energy storage block 07, the mounting plate 20 can also pivot relative to the energy storage block 07. When the carrier moves to the rope driving assembly 01 or the rope reversing assembly 06, the mounting plate 20 overturns along the outer periphery of the rope driving assembly 01 or the rope reversing assembly 06. Since the mounting plate 20 can pivot relative to the energy storage block connecting body 11, the energy storage block connecting body 11 does not overturn under the action of gravity when the mounting plate 20 overturns, and the energy storage block 07 does not overturn with the mounting plate 20 when the energy storage block connecting body 11 carries the energy storage block 07. When the carrier passes through the rope driving assembly 01 and the rope reversing assembly 06, the energy storage block connecting body 11 and the energy storage block 07 do not need to make large-range overturning and reversing movements, thereby reducing the impact of the energy storage block connecting body 11 and the energy storage block 07 on the carrier subsystem when reversing, reducing the damage to the carrier subsystem, and improving the safety, stability and reliability of the operation of the gravity flow energy storage system. In the embodiment of the application, the energy storage block connecting body 11 can be fixedly connected with the hanger shaft 12, and the energy storage block connecting body 11 can also be pivotally connected with the hanger shaft 12; the mounting plate 20 is preferably arranged perpendicularly to the hanger shaft 12.

[0057] As Figure 4 and Figure 6As shown, optionally, the vehicle body comprises a vehicle frame 13 and two mounting plates 20 fixed to the vehicle frame 13, the two mounting plates 20 are located at both ends of the vehicle frame 13 in the first direction, the mounting plate 20 is fixed with the rope connection assembly 09 in the first direction, and the energy storage block connecting body 11 is fixed to the vehicle frame 13. That is, the energy storage block connecting body 11 cannot be pivoted relative to the mounting plate 20, and correspondingly, the energy storage block 07 mounted on the energy storage block connecting body 11 cannot be pivoted relative to the mounting plate 20. When the carrier moves to the rope driving assembly 01 or the rope reversing assembly 06, the energy storage block connecting body 11 and the energy storage block 07 are turned over with the vehicle body, so that the energy storage block 07 can be stably fixed on the carrier, and the energy storage block 07 is not easy to shake and swing during transportation. Especially when the wind speed is large in the environment where the gravitational flow energy storage system is applied, the energy storage block 07 can move with the carrier more stably, reduce the impact on the gravitational flow energy storage system caused by the shaking and swinging of the energy storage block 07, and improve the safety, stability and reliability of the gravitational flow energy storage system.

[0058] Optionally, each of the rope connection assemblies 09 located on the same side of the vehicle body in the first direction is arranged along the extension direction of the carrier cable 04. That is, each of the rope connection assemblies 09 located on the same side is arranged along the extension direction of the corresponding side of the carrier cable 04. Of course, more than three rope connection assemblies 09 can also be arranged on each side of the vehicle body in the first direction, and each of the rope connection assemblies 09 can also be arranged in a wave shape.

[0059] As shown in Figure 1 and Figure 2 As shown, optionally, the rope driving assembly 01 comprises two driving wheels 08, and the two driving wheels 08 are used to drive and cooperate with the two carrier cables 04 one by one. The rope reversing assembly 06 comprises two reversing wheels, and the two reversing wheels are used to drive and cooperate with the two carrier cables 04 one by one. The energy conversion unit 02 is used to drive the two driving wheels 08 to rotate synchronously, and the energy conversion unit 02 is also used to drive the two driving wheels 08 to rotate respectively. In this way, the energy conversion unit 02 can drive the two driving wheels 08 to rotate by driving the first connecting shaft 21 to rotate, and then drive the two carrier cables 04 and the two reversing wheels to rotate. Or, as shown in Figure 6 and Figure 7As shown, the rope driving assembly 01 comprises a driving drum 22, and the rope reversing assembly 06 comprises a reversing drum, so that the energy conversion unit 02 can drive the driving drum 22 to rotate, and then drive the two carrier ropes 04 and the reversing drum to rotate. In the embodiment of the present application, the rope driving assembly 01 is preferably arranged above the rope reversing assembly 06. Of course, the rope driving assembly 01 can also be arranged below the rope reversing assembly 06. Preferably, a containing groove 10 for cooperating with the carrier rope 04 is arranged on the outer periphery of the reversing wheel.

[0060] It can be understood that, in the embodiment of the present application, the two driving wheels 08 are arranged in mirror symmetry, and the two reversing wheels are arranged in mirror symmetry.

[0061] In the embodiment of the present application, the two driving wheels 08 can be driven synchronously by the energy conversion unit 02, or the energy conversion unit 02 can drive the two driving wheels 08 to rotate respectively. In the embodiment of the present application, the energy conversion unit 02 drives the two driving wheels 08 to rotate respectively, which includes that the energy conversion unit 02 drives the two driving wheels 08 to rotate respectively, and then makes the two driving wheels 08 rotate synchronously. At this time, the synchronization of the two driving wheels 08 can be realized by electrical control or other methods.

[0062] Preferably, the two driving wheels 08 are connected by a first connecting shaft 21, and the two reversing wheels are connected by a second connecting shaft.

[0063] In the embodiment of the present application, when the rope driving assembly 01 adopts the structure form comprising two driving wheels 08, the axial direction of the rope driving assembly 01 refers to the axial direction of the driving wheel 08, and the axial direction of the rope reversing assembly 06 refers to the axial direction of the reversing wheel; when the rope driving assembly 01 adopts the structure form comprising a driving drum 22, the axial direction of the rope driving assembly 01 refers to the axial direction of the driving drum 22, and the axial direction of the rope reversing assembly 06 refers to the axial direction of the reversing drum. The rope driving assembly 01 and the rope reversing assembly 06 also comprise a support seat and other structures.

[0064] Optionally, two first rope matching grooves 19 extending along the circumference of the driving drum 22 are formed on the driving drum 22, and two second rope matching grooves extending along the circumference of the reversing drum are formed on the reversing drum. A friction block 18 made of friction material is embedded in each of the first rope matching grooves and the second rope matching grooves. The first rope matching grooves 19 and the second rope matching grooves on the same side in the first direction are matched with the same carrier cable 04. That is, the first rope matching grooves 19 and the second rope matching grooves on the same side in the first direction are matched with the same carrier cable 04, and the other first rope matching grooves 19 and the other second rope matching grooves are matched with the other carrier cable 04. By arranging the first rope matching grooves 19 and the second rope matching grooves, the relative positions between the two carrier cables 04 and the driving drum 22 and the reversing drum can be effectively limited, so that the carrier cables 04 are not easily intertwined, and the safety of the gravitational flow energy storage system is improved.

[0065] Optionally, the driving drum 22 includes a first drum body and two first bosses extending along the circumference of the first drum body, the two first bosses are arranged in the first direction, and a first avoiding slot is formed between the two first bosses. The reversing drum includes a second drum body and two second bosses extending along the circumference of the second drum body, the two second bosses are arranged in the first direction, and a second avoiding slot is formed between the two second bosses.

[0066] In this way, when the carrier vehicle passes through the driving drum 22 along with the carrier cable 04, the side of the carrier vehicle close to the driving drum 22 can pass through the first avoiding slot and is not easy to interfere with the driving drum 22. When the carrier vehicle passes through the reversing drum along with the carrier cable 04, the side of the carrier vehicle close to the reversing drum can pass through the second avoiding slot and is not easy to interfere with the reversing drum.

[0067] The carrier subsystem provided in the present application also includes a rope guide unit 03, and the rope guide unit 03 is arranged at a position close to a corresponding upper storage yard and lower storage yard. The extension direction of the carrier cable 04 changes from an inclined extension to a horizontal extension or an approximately horizontal extension at the rope guide unit 03.

[0068] Optionally, the carrier cable type gravitational flow energy storage system provided in the embodiments of the present application includes a plurality of the carrier subsystems, and the carrier subsystems are arranged laterally or longitudinally. Since the carrier subsystem provided in the embodiments of the present application has a relatively small footprint, the carrier subsystems can be arranged in a centralized manner, so that the system carrying capacity can be improved, and the high-power storage and release of electric energy can be increased. Of course, the carrier cable type gravitational flow energy storage system can also include only one carrier subsystem.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cable-based gravitational flow energy storage system, characterized in that, The system comprises a carrying subsystem, an upper stacking yard, a lower stacking yard and energy storage blocks; the carrying subsystem comprises an energy conversion unit, a transmission unit and an energy storage block carrying unit; The transmission unit comprises two carrying cables arranged side by side and vertically; Opposite ends of the energy storage block carrying unit are fixedly connected with the two carrying cables respectively; The energy storage block carrying unit comprises a carrying vehicle and an even number of rope connecting assemblies, each of the rope connecting assemblies is symmetrically distributed on the two sides of the carrying vehicle, and the carrying vehicle is fixedly connected with the carrying cables through at least two symmetrically arranged rope connecting assemblies; The rope connecting assembly comprises a fixed connection end, a jaw is formed on the fixed connection end, and the fixed connection end is wrapped around the carrying cable through the jaw portion, and the jaw is perpendicular to the extension direction of the carrying cable; The energy conversion unit is in transmission connection with the transmission unit, so as to realize energy storage by moving the energy storage blocks from the lower stacking yard to the upper stacking yard, and to realize energy release by moving the energy storage blocks from the upper stacking yard to the lower stacking yard.

2. A cable-based gravitational flow energy storage system according to claim 1, wherein, The carrying subsystem comprises a plurality of energy storage block carrying units, each of which is uniformly distributed along the carrying cable; each of the energy storage block carrying units is used to move along a clockwise track together with the carrying cable, and each of the energy storage block carrying units is also used to move along an anticlockwise track together with the carrying cable.

3. A cable-based gravitational flow energy storage system according to claim 1, wherein, The transmission unit further comprises a rope driving assembly and a rope reversing assembly; the axial direction of the rope driving assembly and the axial direction of the rope reversing assembly are both parallel to a first direction; the rope driving assembly is in transmission connection with the energy conversion unit, and is in transmission cooperation with the rope reversing assembly through the two carrying cables; and the first direction is horizontally arranged.

4. A cable-based gravitational flow energy storage system according to claim 1, wherein, The carrying vehicle comprises a vehicle body and an energy storage block connecting body; the energy storage block connecting body is detachably connected with the energy storage block.

5. A cable-based gravitational flow energy storage system according to claim 4, wherein, The vehicle body comprises a hanger rotating shaft and two mounting plates arranged perpendicularly to the hanger rotating shaft, the rope connecting assembly is fixed to the mounting plate, the axial direction of the hanger rotating shaft is parallel to a first direction, the two mounting plates are pivotally connected to the two ends of the hanger rotating shaft respectively, and the energy storage block connecting body is mounted on the hanger rotating shaft; and the first direction is horizontally arranged.

6. A cable-based gravitational flow energy storage system according to claim 4, wherein, The vehicle body comprises a vehicle frame and two mounting plates fixed to the vehicle frame, the two mounting plates are located at the two ends of the vehicle frame in a first direction, the mounting plates are fixed with the rope connecting assembly in the first direction, and the energy storage block connecting body is fixed to the vehicle frame; and the first direction is horizontally arranged.

7. A cable-based gravitational flow energy storage system according to claim 4, wherein, Each of the rope connecting assemblies located on the same side of the vehicle body in the first direction is arranged along the extension direction of the carrying cable; and the first direction is horizontally arranged.

8. A cable-based gravitational flow energy storage system according to claim 3, wherein, The rope driving assembly comprises two driving wheels, and the two driving wheels are in one-to-one transmission cooperation with the two carrier ropes; the energy conversion unit is used to drive the two driving wheels to rotate synchronously, and is also used to drive the two driving wheels to rotate respectively; the rope reversing assembly comprises two reversing wheels, and the two reversing wheels are used to be in one-to-one transmission cooperation with the two carrier ropes. Alternatively, the rope driving assembly comprises a driving winding drum, and the rope reversing assembly comprises a reversing winding drum.

9. A cable-based gravitational flow energy storage system according to claim 8, wherein, Two first rope cooperation grooves are formed on the driving winding drum and extend along the circumference of the driving winding drum, and two second rope cooperation grooves are formed on the reversing winding drum and extend along the circumference of the reversing winding drum; a friction block made of friction material is embedded in each of the first rope cooperation grooves and the second rope cooperation grooves; the first rope cooperation grooves and the second rope cooperation grooves on the same side in the first direction are in cooperation with the same carrier rope.

10. A cable-based gravitational flow energy storage system according to any one of claims 1 to 9, wherein, A plurality of the carrier subsystems are arranged transversely, or a plurality of the carrier subsystems are arranged longitudinally.

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