Gravity energy storage system and method based on gradient channel weight carrying mechanism

Abstract

The invention discloses a gravity energy storage system and method based on a gradient channel weight carrying mechanism. The system comprises an ascending channel and a descending channel. The upper end of the ascending channel and the upper end of the descending channel are connected through an upper carrying channel, and the end, close to the ascending channel, of the upper carrying channel is higher than the end, close to the descending channel, of the upper carrying channel. The lower end of the descending channel and the lower end of the ascending channel are connected through a lower carrying channel, and the end, close to the descending channel, of the lower carrying channel is higher than the end close to the ascending channel. The end, close to the descending channel, of the upper carrying channel and the end, close to the ascending channel, of the lower carrying channel are each provided with a loading mechanism used for enabling heavy objects to enter the carrying bin. And the unloading mechanism is used for moving the heavy objects out of the loading bin. According to the scheme, the problems that a weight horizontal carrying mechanism of a gravity energy storage system is high in construction cost, complex in control scheme and large in power consumption can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gravity energy storage, and in particular relates to a gravity energy storage system and method based on a gradient channel heavy object carrying mechanism. Background Art

[0002] At present, there are roughly three schemes for the horizontal transport mechanism of heavy objects in the gravity energy storage system: palletizer or grabbing device, conveyor chain or conveyor belt, and intelligent AGV transport vehicle. These existing schemes all have the following problems: first, large-scale medium-sized and large-scale systems require multiple sets of transportation equipment, and the system construction cost is relatively high; second, to achieve continuous power generation, the designed control scheme is relatively complex; third, the system continuously uses electricity to transport large mass heavy objects, which consumes a lot of power. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a gravity energy storage system and method based on a slope channel heavy object carrying mechanism, so as to solve the problems of high construction cost, complex control scheme and high power consumption of the gravity energy storage system heavy object horizontal carrying mechanism.

[0004] According to the technical solution of the present invention, the present invention provides a gravity energy storage system based on a slope channel heavy object carrying mechanism, including an ascending channel and a descending channel; the upper end of the ascending channel and the upper end of the descending channel are connected through an upper carrying channel, and the end of the upper carrying channel close to the ascending channel is higher than the end close to the descending channel; the lower end of the descending channel and the lower end of the ascending channel are connected through a lower carrying channel, and the end of the lower carrying channel close to the descending channel is higher than the end close to the ascending channel; both the ascending channel and the descending channel are provided with a loading bin capable of placing heavy objects and performing lifting and lowering movements, and the loading bin is connected to the lifting and power system of the gravity energy storage; both the upper carrying channel and the lower carrying channel can carry heavy objects and move the heavy objects from one end to the other; a loading mechanism for allowing heavy objects to enter the loading bin is provided at one end of the upper carrying channel close to the descending channel and at one end of the lower carrying channel close to the ascending channel; and an unloading mechanism for moving heavy objects out of the loading bin is also provided.

[0005] Furthermore, in the lifting and power system of the gravity energy storage, the lifting system includes a steel wire rope; transmission wheels are provided at the upper ends of the ascending channel and the descending channel, and the transmission wheels are connected to the corresponding cargo compartment through the steel wire rope.

[0006] Furthermore, in the lifting and power system of gravity energy storage, the power system includes a transmission shaft, a motor, a rectifier, an inverter, a transformer and a power grid; the transmission wheel is connected to the motor through the transmission shaft, and the motor is connected to the rectifier, the inverter, the transformer and the power grid in sequence.

[0007] Furthermore, in the gravity energy storage system based on the slope channel heavy object transport mechanism, a plurality of energy storage and power generation modules are arranged in parallel, and each energy storage and power generation module includes a group of connected ascending channels, descending channels, upper transport channels, and lower transport channels.

[0008] Furthermore, the weight is spherical.

[0009] Furthermore, the heavy objects move in the upper transport channel and the lower transport channel by relying on gravity, and a buffer device for slowing down the moving speed of the heavy objects is provided in the upper transport channel and / or the lower transport channel.

[0010] Furthermore, the loading mechanism includes a dividing wheel for controlling only one heavy object to enter the loading bin at a time, and the loading mechanism also includes a baffle for controlling the on-off state of the ends of the upper transport channel and the lower transport channel.

[0011] Furthermore, it also includes a trigger mechanism for automatically controlling the operation of the loading mechanism when the loading bin moves into position.

[0012] Furthermore, the trigger mechanism is a button, which is arranged at the upper end of the ascending channel and the lower end of the descending channel. When the cargo bin moves to the corresponding position, the button can be triggered; the button is electrically connected to the corresponding material distribution wheel to achieve control; the baffle is movably arranged, and the baffle has a driving part that cooperates with the corresponding cargo bin.

[0013] Based on the technical solution of the present invention, the present invention also provides a method for operating a gravity energy storage system based on a slope channel heavy object carrying mechanism, which adopts the gravity energy storage system based on a slope channel heavy object carrying mechanism of the present invention, and includes the following contents: During the energy release process, the initial state is that heavy objects are arranged in sequence on the upper transport channel. When energy release is required, the loading bin in the descending channel rises to the top, and the baffle is lifted to connect the upper transport channel with the loading bin at the bottom of the descending channel, and the button at the top of the descending channel is pressed to drive the material distribution wheel to move a heavy object closest to the descending channel, so that the heavy object enters the loading bin, and the loading bin carrying the heavy object descends from the top to the bottom of the descending channel under the action of gravity, so that the gravitational potential energy is converted into electrical energy; after the loading bin carrying the heavy object falls to the bottom of the descending channel, the heavy object is unloaded from the loading bin to the lower transport channel, and then the empty loading bin rises, and the descending energy release process of the required number of heavy objects is repeated, and the heavy objects will move downward on the lower transport channel by their own weight and be arranged in sequence; During the energy storage process, the initial state is that heavy objects are arranged in sequence on the lower transport channel. When energy storage is required, the loading bin in the ascending channel descends to the bottom, and the baffle is pressed down to connect the lower transport channel with the loading bin at the bottom of the ascending channel, and the button at the bottom of the ascending channel is pressed to drive the dividing wheel to move a heavy object closest to the ascending channel, so that the heavy object enters the loading bin. The loading bin carrying the heavy object rises from the bottom to the top of the ascending channel under the lifting and lowering of the gravity energy storage and the drive of the power system, so that the electrical energy is converted into the gravitational potential energy of the heavy object; after the loading bin carrying the heavy object rises to the top of the ascending channel, the heavy object is unloaded from the loading bin to the upper transport channel, and then the empty loading bin descends, and the ascending energy storage process of the required number of heavy objects is repeated. The heavy objects will move downward on the upper transport channel by their own weight and be arranged in sequence.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows: The gravity energy storage system and method based on the slope channel heavy object transport mechanism of the present invention can solve the problems of high construction cost, complex control scheme and high power consumption of the gravity energy storage system heavy object horizontal transport mechanism. It adopts upper and lower transport channels with slopes to store heavy objects, and relies on gravity to realize the lateral transportation of heavy objects in high and low altitude areas. The control is simple and can be moved without electric energy. Correspondingly, the energy storage and energy release processes are completed by the ascending channel and the descending channel respectively, and the operation and management are more intuitive and convenient. This scheme is particularly suitable for shaft-type gravity energy storage systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the system structure provided by the present invention.

[0016] Description of reference numerals in the accompanying drawings: 11. Descending channel; 12. Ascending channel; 21. Upper transport channel; 22. Lower transport channel; 3. Heavy objects; 4. Loading compartment; 51. Wire rope; 52. Transmission wheel; 53. Transmission shaft; 54. Motor; 55. Rectifier; 56. Inverter; 57. Transformer; 58. Power grid; 6. Buffer device; 71. Distribution wheel; 72. Baffle; 73. Button. DETAILED DESCRIPTION

[0017] The present invention provides a gravity energy storage system and method based on a gradient channel heavy object carrying mechanism, which solves the problems of high construction cost, complex control scheme and high power consumption of the gravity energy storage system heavy object horizontal carrying mechanism.

[0018] See also Figure 1The present invention provides a gravity energy storage system based on a gradient channel weight transport mechanism, including an ascending channel 12 and a descending channel 11. In the illustrated embodiment, the ascending channel 12 and the descending channel 11 are both shafts; in other embodiments, the ascending channel 12 and the descending channel 11 may also be selected as, for example, a slope. In short, the ascending channel 12 and the descending channel 11 form a height difference to realize the energy conversion process of the gravity energy storage system by lifting and lowering the weight. The interior and / or exterior of the ascending channel 12 and the descending channel 11 have a lifting and power system of the gravity energy storage system corresponding to the gravity energy storage type (such as shaft-type gravity energy storage, slope-type gravity energy storage), thereby realizing the basic lifting and power generation function process of the gravity energy storage system (including deceleration and stabilization mechanism when the cargo compartment is lowered to the bottom, etc.), and the lifting and power system parts can use the existing technology.

[0019] The upper end (top) of the ascending channel 12 and the upper end (top) of the descending channel 11 are connected through the upper carrying channel 21, and the end of the upper carrying channel 21 close to the ascending channel 12 is higher than the end close to the descending channel 11; thus, the heavy object 3 can move on the upper carrying channel 21 by gravity. Similarly, the lower end (bottom) of the descending channel 11 and the lower end (bottom) of the ascending channel 12 are connected through the lower carrying channel 22, and the end of the lower carrying channel 22 close to the descending channel 11 is higher than the end close to the ascending channel 12. Specifically, the upper transport channel 21 and the lower transport channel 22 may be straight inclined channels / pipes with side ribs as shown in the illustrated embodiment; in other embodiments, the upper transport channel 21 and the lower transport channel 22 may also be channels with curved curves in the length direction; for example, they may be U-shaped channels, so that the ascending channel 12 and the descending channel 11 are close to each other or are actually channels connected side by side (even if they are connected, their functions are still separate), which helps to further improve space utilization and reduce the construction and maintenance costs of the channels (especially for shafts). In addition, the upper transport channel 21 and the lower transport channel 22 are both generally downwardly inclined structures, and may have a plane or a slightly upwardly inclined portion at the end or middle to make the transportation smoother.

[0020] A cargo compartment 4 (such as a car) capable of placing a heavy object 3 and performing lifting and lowering motion is provided in both the ascending channel 12 and the descending channel 11. The cargo compartment 4 is connected to the lifting and power system of the gravity energy storage (or is a component of the lifting system). The upper transport channel 21 and the lower transport channel 22 are both capable of carrying the heavy object 3 and moving the heavy object 3 from one end to the other. A loading mechanism for allowing the heavy object 3 to enter the cargo compartment 4 is provided at one end of the upper transport channel 21 close to the descending channel 11 and at one end of the lower transport channel 22 close to the ascending channel 12. In addition, there is also an unloading mechanism for moving the heavy object 3 out of the cargo compartment 4. The unloading mechanism is, for example, a pushing mechanism arranged inside the cargo compartment 4 or a liftable inclined surface at the bottom, or a movable arm arranged outside the cargo compartment 4 such as at the end of the transport channel, so that the heavy object 3 can be pushed out of the cargo compartment 4 to achieve unloading.

[0021] by Figure 1 Taking the vertical shaft type gravity energy storage system as an example, in the lifting and power system of the gravity energy storage, the lifting system includes a steel wire rope 51, and a transmission wheel 52 is provided at the upper end of the ascending channel 12 and the descending channel 11, and the transmission wheel 52 is connected to the corresponding cargo compartment 4 through the steel wire rope 51. Thus, the lifting process of the cargo compartment 4 and the rotation process of the transmission wheel 52 can be correspondingly converted and transmitted. Optionally, the cargo compartment 4 and the corresponding ascending channel 12 and descending channel 11 are connected by sliding to further ensure the stability of the lifting.

[0022] In the lifting and power system of gravity energy storage, the power system includes a transmission shaft 53, a motor 54, a rectifier 55, an inverter 56, a transformer 57 and a power grid 58. The transmission wheel 52 is connected to the motor 54 through the transmission shaft 53, and the motor 54 is connected to the rectifier 55, the inverter 56, the transformer 57 and the power grid 58 in sequence. Among them, the motor 54 is preferably a generator and electric integrated machine, which can drive the transmission wheel 52 to rotate when powered on to pull the cargo compartment 4 to lift and move, etc. When the cargo compartment 4 carrying heavy objects descends, the transmission wheel 52 is driven to rotate and electricity can be generated through the generator and electric integrated machine. The rectifier 55, the inverter 56, the transformer 57, etc. can realize the modulation of the voltage level and frequency of the motor 54 into the power grid standard, so as to realize the production and conversion of electric energy, and finally realize the power supply to the power grid 58.

[0023] In practical application, preferably, in a power station, the gravity energy storage system based on the slope channel heavy object transport mechanism of the present invention is provided with a plurality of energy storage power generation modules in parallel, and each energy storage power generation module includes a group of connected ascending channels 12, descending channels 11, upper transport channels 21, and lower transport channels 22. In other words, a complete gravity energy storage system has a plurality of ascending channels 12, a plurality of descending channels 11, a plurality of upper transport channels 21, and a plurality of lower transport channels 22, and these channels have the aforementioned connection relationship, so there are a plurality of such as Figure 1 The energy storage and power generation module shown can further improve the energy storage capacity, store / discover energy simultaneously or successively, and achieve continuous power generation and other effects. Optionally, two adjacent energy storage and power generation modules can share a lifting channel in a functionally separated manner to reduce the construction cost of channels such as shafts; or, two adjacent energy storage and power generation modules can directly share an ascending channel 12 or a descending channel 11, for example, an ascending channel 12 is connected to two (or more) upper transport channels 21, and the ascended heavy objects can move to the upper transport channels 21 in two (or more) directions, so that more heavy objects can be stored; this solution can flexibly design a variety of specific structures and application methods according to the situation.

[0024] In this solution, the weight 3 is spherical. It is conceivable that in some other embodiments, the weight 3 may also be selected as other rolling bodies, such as cylinders; or, the bottom of the upper carrying channel 21 and the lower carrying channel 22 adopts a structure similar to a roller conveyor, and there is no need to limit the specific block shape of the weight 3. In addition, in the illustrated embodiment, a loading bin 4 is used to accommodate a weight 3; in other embodiments, the weight may also be selected as bulk material, and a loading bin can accommodate a certain amount of several weights, which together constitute the weight mass used for energy conversion.

[0025] The weight 3 moves in the upper carrying channel 21 and the lower carrying channel 22 by gravity. Preferably, a buffer device 6 for slowing down the moving speed of the weight 3 is provided in the upper carrying channel 21 and / or the lower carrying channel 22. The buffer device 6 is specifically, for example, a surface with a large friction force provided locally, or a mechanism that can intermittently block the weight 3 by, for example, telescopically, so as to prevent the weight 3 from sliding down too fast, from crashing into the loading mechanism, and from crashing into each other. In other embodiments, the carrying channel 21 and the lower carrying channel 22 are curved or have specific undulations at the bottom, which can also achieve buffering and anti-collision effects.

[0026] In a preferred embodiment, the loading mechanism includes a material distribution wheel 71 for controlling only one weight 3 to enter the loading bin 4 at a time. The material distribution wheel 71 is, for example, a gear structure, so that a single weight 3 can stop before or between the gear teeth, and the weight 3 can be moved by rotating the gear. The loading mechanism also includes a baffle 72 for controlling the on-off state of the ends of the upper transport channel 21 and the lower transport channel 22. The baffle 72 is, for example, a trap door. More specifically, for example, the upper transport channel 21 is connected to the descending channel 11 through a connecting port, and tracks are provided on both sides of the connecting port to slide a door panel that can be raised (opened) and lowered (closed); similarly, the lower transport channel 22 is connected to the ascending channel 12 through a connecting port, and tracks are provided on both sides of the connecting port to slide a door panel that can be lowered (opened) and raised (closed).

[0027] More preferably, a trigger mechanism is further included for automatically controlling the operation of the loading mechanism when the loading bin 4 moves into position. Specifically, for example, the trigger mechanism is a button 73, which is disposed at the upper end (top surface or top side) of the ascending channel 12 and the lower end (bottom surface or bottom side) of the descending channel 11, and the button 73 can be triggered when the loading bin 4 moves to the corresponding position. The button 73 is electrically connected to the corresponding material distribution wheel 71 to achieve control, that is, when the button 73 is triggered, the material distribution wheel 71 works once (or a set number of times) to move in one (or a set number of) heavy objects 3. The baffle 72 is a movable arrangement, and the baffle 72 has a driving part that cooperates with the corresponding loading bin 4. For example, on the basis of the aforementioned structure, the baffle 72 has a protrusion or a corresponding abutment, magnetic attraction structure, etc. on the side facing the loading bin 4, so that during the rising process of the loading bin 4, the outer surface of the loading bin 4 can drive the baffle 72 door plate to move up, so that the connecting port is opened, and when the loading bin 4 is lowered, the baffle 72 automatically returns to the closed state under the action of gravity or a reset mechanism; the working principle of the baffle 72 between the lower carrying channel 22 and the rising channel 12 is similar to this. In this way, the automatic linkage control of the loading mechanism can be realized. It can be imagined that in other embodiments, there is no trigger and linkage control, and the material distribution wheel 71 and the baffle 72 are controlled separately, and the control program will be relatively complicated, but the desired effect can also be achieved; and, it is obvious that the loading mechanism is not limited to the above-mentioned embodiment, and there are many implementation methods of mechanical structures and driving methods with similar functions based on the prior art.

[0028] Based on the above-mentioned preferred embodiments of the present invention and conceivable similar variant implementations, the present invention provides a method for operating a gravity energy storage system based on a slope channel weight carrying mechanism, which adopts the gravity energy storage system based on a slope channel weight carrying mechanism of the present invention, and includes the following contents.

[0029] During the energy release (power generation) process, the initial state is that the weights 3 are arranged in order on the upper transport channel 21. When energy release is required, the loading bin 4 in the descending channel 11 rises to the top, and the baffle 72 is lifted up to connect the upper transport channel 21 with the loading bin 4 at the bottom of the descending channel 11, and the button 73 at the top of the descending channel 11 is pressed to drive the dividing wheel 71 to move a weight 3 closest to the descending channel 11, so that the weight 3 enters the loading bin 4 (the remaining weights will not move into the loading bin 4 due to the obstruction of the dividing wheel 71), and the loading bin 4 carrying the weight 3 is in Under the action of gravity, it descends from the top to the bottom of the descending channel 11, so that the gravitational potential energy is converted into electrical energy; after the load bin 4 carrying the heavy object 3 falls to the bottom of the descending channel 11, the heavy object 3 is unloaded from the load bin 4 to the lower transport channel 22, and then the empty load bin 4 rises, and the descending energy release process of the required number of heavy objects 3 is repeated in this way. The heavy objects 3 will move downward on the lower transport channel 22 by their own weight, slowly move to the material distribution wheel 71 of the lower transport channel 22, be blocked, and be arranged in sequence for storage, and enter the load bin 4 of the ascending channel 12 while waiting for the energy storage process. More specifically, during the descent process, the heavy object will undergo three motion processes of acceleration, uniform speed, and deceleration, among which the uniform speed stage is used for grid-connected power generation.

[0030] The energy storage process is the reverse process of the energy release process. When the power grid price is low, heavy objects can be lifted from low to high, as follows.

[0031] During the energy storage (electric) process, the initial state is that the heavy objects 3 are arranged in sequence on the lower transport channel 22. When energy storage is required, the loading bin 4 in the ascending channel 12 descends to the bottom, and the baffle 72 is pressed down to connect the lower transport channel 22 with the loading bin 4 at the bottom of the ascending channel 12, and the button 73 at the bottom of the ascending channel 12 is pressed to drive the material distribution wheel 71 to move a heavy object 3 closest to the ascending channel 12, so that the heavy object 3 enters the loading bin 4. The loading bin 4 carrying the heavy object 3 rises from the bottom to the top of the ascending channel 12 under the lifting and lowering of the gravity energy storage and the drive of the electric system, so that the electrical energy is converted into the gravitational potential energy of the heavy object 3; after the loading bin 4 carrying the heavy object 3 rises to the top of the ascending channel 12, the heavy object 3 is unloaded from the loading bin 4 to the upper transport channel 21, and then the empty loading bin 4 descends, and the ascending energy storage process of the required number of heavy objects 3 is repeated, and the heavy objects 3 will move downward on the upper transport channel 21 by their own weight and be arranged in sequence.

[0032] When the system is on standby, the loading compartment 4 can be selected to be located in the middle of the height direction of the corresponding ascending channel 12 and descending channel 11.

[0033] In summary, the gravity energy storage system and method based on the slope channel heavy object transport mechanism of the present invention can solve the problems of high construction cost, complex control scheme and high power consumption of the gravity energy storage system heavy object horizontal transport mechanism. It adopts upper and lower transport channels with slopes to store heavy objects, and relies on gravity to realize the lateral transportation of heavy objects in high and low altitude areas. The control is simple and can be moved without electric energy. Correspondingly, the energy storage and release processes are completed by the ascending channel and the descending channel respectively, and the operation and management are more intuitive and convenient. This scheme is particularly suitable for shaft-type gravity energy storage systems.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention; for ease of description, only the parts related to the relevant inventions are shown in the accompanying drawings. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other; modifying the technical solutions recorded in the aforementioned embodiments, or replacing some of the technical features therein by equivalents, does not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gravity energy storage system based on a slope channel heavy object carrying mechanism, characterized in that: The invention comprises an ascending channel (12) and a descending channel (11); the upper end of the ascending channel (12) and the upper end of the descending channel (11) are connected via an upper transport channel (21), and the end of the upper transport channel (21) close to the ascending channel (12) is higher than the end close to the descending channel (11); the lower end of the descending channel (11) and the lower end of the ascending channel (12) are connected via a lower transport channel (22), and the end of the lower transport channel (22) close to the descending channel (11) is higher than the end close to the ascending channel (12); and the ascending channel (12) and the descending channel (11) are connected to each other. Both are provided with a cargo compartment (4) capable of placing a heavy object (3) and performing a lifting movement, and the cargo compartment (4) is connected to a lifting and electric power system for gravity energy storage; both the upper transport channel (21) and the lower transport channel (22) are capable of carrying a heavy object (3) and moving the heavy object (3) from one end to the other end; a loading mechanism for allowing the heavy object (3) to enter the cargo compartment (4) is provided at one end of the upper transport channel (21) close to the descending channel (11) and at one end of the lower transport channel (22) close to the ascending channel (12); and an unloading mechanism for allowing the heavy object (3) to move out of the cargo compartment (4) is also provided.

2. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 1 is characterized in that: In the gravity energy storage lifting and power system, the lifting system includes a steel wire rope (51); a transmission wheel (52) is provided at the upper end of the ascending channel (12) and the descending channel (11); the transmission wheel (52) is connected to the corresponding cargo compartment (4) through the steel wire rope (51).

3. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 2 is characterized in that: In the lifting and power system of gravity energy storage, the power system includes a transmission shaft (53), a motor (54), a rectifier (55), an inverter (56), a transformer (57) and a power grid (58); the transmission wheel (52) is connected to the motor (54) through the transmission shaft (53), and the motor (54) is connected to the rectifier (55), the inverter (56), the transformer (57) and the power grid (58) in sequence.

4. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 1 is characterized in that: In the gravity energy storage system based on the gradient channel heavy object transport mechanism, a plurality of energy storage power generation modules are arranged in parallel, and each energy storage power generation module comprises a group of connected ascending channels (12), descending channels (11), upper transport channels (21), and lower transport channels (22).

5. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 1 is characterized in that: The weight (3) is spherical.

6. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to any one of claims 1 to 5, characterized in that: The heavy object (3) moves in the upper transport channel (21) and the lower transport channel (22) by relying on gravity, and a buffer device (6) for slowing down the moving speed of the heavy object (3) is provided in the upper transport channel (21) and / or the lower transport channel (22).

7. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to any one of claims 1 to 5, characterized in that: The loading mechanism comprises a material dividing wheel (71) for controlling only one heavy object (3) to enter the loading bin (4) at a time, and the loading mechanism also comprises a baffle (72) for controlling the on / off state of the ends of the upper carrying channel (21) and the lower carrying channel (22).

8. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 7 is characterized in that: It also includes a trigger mechanism for automatically controlling the operation of the loading mechanism when the loading bin (4) moves into position.

9. The gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 8, characterized in that: The trigger mechanism is a button (73), which is arranged at the upper end of the ascending channel (12) and the lower end of the descending channel (11), and can trigger the button (73) when the loading bin (4) moves to a corresponding position; the button (73) is electrically connected to the corresponding material distribution wheel (71) to achieve control; the baffle (72) is movably arranged, and the baffle (72) has a driving part that cooperates with the corresponding loading bin (4).

10. A method for operating a gravity energy storage system based on a slope channel heavy object transport mechanism, characterized in that: It adopts the gravity energy storage system based on the slope channel heavy object carrying mechanism according to claim 9, which includes the following contents: During the energy release process, the initial state is that heavy objects are arranged in sequence on the upper transport channel. When energy release is required, the loading bin in the descending channel rises to the top, and the baffle is lifted to connect the upper transport channel with the loading bin at the bottom of the descending channel. The button at the top of the descending channel is pressed to drive the material distribution wheel to move a heavy object closest to the descending channel, so that the heavy object enters the loading bin. The loading bin carrying the heavy object descends from the top to the bottom of the descending channel under the action of gravity, so that the gravitational potential energy is converted into electrical energy. After the loaded cargo bin falls to the bottom of the descending channel, the loaded cargo bin is unloaded from the loading bin to the lower transport channel, and then the empty loading bin rises. This process of descending and releasing the required number of loaded cargoes is repeated, and the loaded cargoes will move downward on the lower transport channel by their own weight and be arranged in sequence. During the energy storage process, the initial state is that heavy objects are arranged in sequence on the lower transport channel. When energy storage is required, the loading bin in the ascending channel descends to the bottom, and the baffle is pressed down to connect the lower transport channel with the loading bin at the bottom of the ascending channel, and the button at the bottom of the ascending channel is pressed to drive the dividing wheel to move a heavy object closest to the ascending channel, so that the heavy object enters the loading bin. The loading bin carrying the heavy object rises from the bottom to the top of the ascending channel under the lifting and lowering of the gravity energy storage and the drive of the power system, so that the electrical energy is converted into the gravitational potential energy of the heavy object; after the loading bin carrying the heavy object rises to the top of the ascending channel, the heavy object is unloaded from the loading bin to the upper transport channel, and then the empty loading bin descends, and the ascending energy storage process of the required number of heavy objects is repeated. The heavy objects will move downward on the upper transport channel by their own weight and be arranged in sequence.

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