A high-energy-efficiency mass stacking device and method for a slope-type gravity energy storage system
By designing a high-efficiency mass block stacking device for the sloped gravity energy storage system, the problem of large-scale stacking of mass blocks is solved, safe and efficient stacking and energy recovery are achieved, and the energy utilization efficiency of the system is improved.
Patent Information
- Application Number
- CN202310444685.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-24
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2043-04-24
AI Technical Summary
In the existing technology, the problem of large-scale stacking of mass blocks in slope-type gravity energy storage systems is difficult to solve, and terrain and environmental factors limit the stacking height and safety.
A high-efficiency mass stacking device for a slope-type gravity energy storage system was designed, including a stacking unit, a main traction assembly, and a main slope. A linear motor and a sensor monitoring device were used to achieve efficient stacking and energy recovery of the mass trolleys. The system was built by taking advantage of the terrain and adhering to the mountain to reduce terrain dependence.
The safety and efficiency of mass block stacking are improved, construction costs are reduced, the flexibility and energy utilization efficiency of the system are enhanced, and energy loss is reduced.
Smart Images
Figure CN116588607B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of gravity energy storage, and in particular to a high-energy-efficiency mass block stacking device and method for a slope-type gravity energy storage system. Background Art
[0002] Accelerating the development of renewable energy is a crucial measure to address the significant impacts of global climate change on human society and reduce the proportion of fossil energy. However, renewable energy, primarily wind power and photovoltaics, is characterized by randomness, volatility, and intermittency, which pose difficulties and challenges to the large-scale grid integration of renewable energy.
[0003] Energy storage systems can effectively mitigate the impact of large-scale renewable energy integration. Current energy storage technologies are primarily categorized as chemical and physical. Chemical energy storage, primarily carried by batteries, offers the advantage of low cost, but presents thermal safety issues. Physical energy storage offers greater safety and is suitable for grid peak regulation and day-to-night power shifting. Pumped hydro storage, the most widely used physical energy storage method, faces challenges such as difficult site selection, high investment costs, and long construction times.
[0004] As a new physical energy storage method, gravity energy storage offers all the advantages of pumped hydro storage, but with lower construction costs and greater flexibility. Gravity energy storage also offers flexible site selection, allowing for construction on suitable mountain slopes. This allows for the conversion of electrical energy into gravitational potential energy for storage, leveraging the altitude advantage. Summary of the Invention
[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.
[0006] In view of the above problems or problems existing in the prior art, the present invention is proposed.
[0007] Therefore, the purpose of the present invention is to provide a high-efficiency mass block stacking device and method for a slope-type gravity energy storage system, which can solve the problem of large-scale stacking of mass blocks under the constraints of mountains and terrain.
[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-energy-efficiency stacking device for mass blocks of a sloped gravity energy storage system, which includes a stacking unit, including an upper yard assembly, a lower yard assembly arranged on one side of the upper yard assembly, a main traction assembly arranged on one side of the lower yard assembly, and a main slope arranged on one side of the upper yard assembly; and a mass block trolley arranged on the top of the lower yard assembly.
[0009] As a preferred solution of the high-energy-efficiency stacking device of the sloped gravity energy storage system of the present invention, the upper yard component includes an upper yard mass block stacking building, an upper approach bridge arranged on the top floor of the upper yard mass block stacking building, and an upper yard platform arranged on one side of the upper yard mass block stacking building; the lower yard component includes a lower yard mass block stacking building, a lower approach bridge arranged on the top floor of the lower yard mass block stacking building, and a lower yard platform arranged on one side of the lower yard mass block stacking building; the upper yard mass block stacking building and the lower yard mass block stacking building have several groups of floors, each group is connected by an inter-floor connecting bridge, and the mass block trolley can move between each group of several groups of upper yard mass block stacking buildings and several groups of lower yard mass block stacking buildings through the inter-floor connecting bridge, and one end of the upper approach bridge and one end of the lower approach bridge are connected to the two ends of the main slope.
[0010] As a preferred solution of the high-energy-efficiency stacking device of the sloped gravity energy storage system of the present invention, a group of mass block trolley running tracks are laid on each floor, and several groups of mass block trolley stacking tracks are perpendicular to the mass block trolley running tracks. The spacing of the mass block trolley stacking tracks is set according to the width of the mass block trolley.
[0011] As a preferred solution of the high-efficiency mass block stacking device of the sloped gravity energy storage system of the present invention, wherein: the main traction assembly includes a first traction wheel arranged on the top floor of the upper yard mass block stacking building, a second traction wheel arranged on the top of the lower yard platform, auxiliary traction parts arranged on both sides of the main traction assembly, and a steel cable arranged at the top of the main slope; the auxiliary traction parts include a primary of a linear motor arranged in the middle of the upper yard mass block stacking building, the lower yard mass block stacking building, the upper approach bridge, the lower approach bridge, the upper yard platform and the lower yard platform track, and a secondary of the linear motor arranged on the bogie of the mass block trolley.
[0012] The present invention also provides a high-energy-efficiency stacking method for mass blocks of a slope-type gravity energy storage system, which is characterized by comprising a high-energy-efficiency stacking device for mass blocks of a slope-type gravity energy storage system; and
[0013] Put the slope type gravity energy storage system into the energy storage state; put the slope type gravity energy storage system into the power generation state; control the recovery of kinetic energy and potential energy of the linear motor; monitor and dispatch the information status of the mass block trolley.
[0014] As a preferred solution of the high-energy-efficiency stacking device of the sloped gravity energy storage system of the present invention, S1 includes: when the sloped gravity energy storage system is in the energy storage state, the mass block trolley on the bottom floor of the lower yard mass block stacking building is preferentially driven to the lower yard platform, and the main traction component pulls the mass block trolley into the main slope; then the other mass block trolleys of the lower yard mass block stacking building pass through the inter-layer connecting bridge in order from low to high according to the order of the floors they are located to the bottom floor of the lower yard mass block stacking building, enter the lower yard platform, and the main traction component pulls the mass block trolley into the main slope; when the mass block trolley is about to drive to the upper yard, the main traction component pulls the mass block trolley into the upper approach bridge and reaches the top floor of the upper yard mass block stacking building, and then the mass block trolley is separated from the main traction component; the mass block trolley drives to the upper yard mass block stacking building through the inter-layer connecting bridge, and preferentially enters the bottom floor of the upper yard mass block stacking building for stacking.
[0015] As a preferred solution of the high-energy-efficiency stacking device of the sloped gravity energy storage system of the present invention, S2 includes that when the sloped gravity energy storage system is in the power generation state, the mass block trolley on the bottom floor of the upper yard mass block stacking building is preferentially driven to the upper yard platform, and the main traction component pulls the mass block trolley into the main slope; then the other mass block trolleys of the upper yard mass block stacking building pass through the inter-layer connecting bridge in order from low to high according to the order of the floors they are located to the bottom floor of the upper yard mass block stacking building, enter the upper yard platform, and the main traction component pulls the mass block trolley into the main slope; when the mass block trolley is about to drive to the lower yard, the mass block trolley disengages from the main traction component, slides to the lower approach bridge on its own, and reaches the top floor of the lower yard mass block stacking building; then the mass block trolley drives to the lower yard mass block stacking building through the inter-layer connecting bridge, and preferentially enters the bottom floor of the lower yard mass block stacking building for stacking.
[0016] As a preferred solution of the high-efficiency stacking device of the mass block of the sloped gravity energy storage system of the present invention, S3 includes setting the linear motor to a feedback braking state to recover the kinetic energy and potential energy of the mass block trolley when the speed of the mass block trolley is too high or needs to travel from a high potential energy point to a low potential energy point.
[0017] As a preferred solution of the mass block high-efficiency stacking device of the sloped gravity energy storage system of the present invention, wherein: S4 includes setting a mass block trolley status information monitoring device around the tracks in the upper yard mass block stacking building, the lower yard mass block stacking building, the upper approach bridge, the lower approach bridge, the upper yard platform area and the lower yard platform area, and the sensing device includes but is not limited to a laser sensor and an ultrasonic sensor. The information collected by the sensing device is then converted into mass block trolley operation status information, including the current spatial position of each mass block trolley, the current speed, acceleration, etc.; and the mass block trolley operation status information is transmitted to the mass block trolley scheduling control algorithm model. The algorithm model will comprehensively consider the current energy state of the sloped gravity energy storage system and the grid scheduling instructions to control the trolleys in the upper yard mass block stacking building and the lower yard mass block stacking building.
[0018] As a preferred solution of the mass block high-efficiency stacking device of the slope-type gravity energy storage system of the present invention, wherein: at S1, the recoverable potential energy can be calculated by the following formula:
[0019]
[0020] Among them, m i is the mass of the mass block trolley; C total is the total number of mass blocks involved in the operation; H up h is the total height of the mass block stacking building in the upper yard; p P is the floor height of each floor of the mass block stacking building in the lower yard; i is the floor where the mass block trolley is located when it is in the mass block stacking building in the lower yard; h q Q is the height of each floor of the mass block stacking building in the upper yard; i is the floor where the mass block trolley is located when it is in the mass block stacking building in the upper yard; η is the energy recovery efficiency;
[0021] The recoverable kinetic energy can be calculated as follows:
[0022]
[0023] Among them, v main v is the running speed of the mass trolley on the main traction assembly; set_i is the specified speed of the mass car within the coverage area of the auxiliary traction component given by the scheduling control algorithm.
[0024] Beneficial effects of the present invention: The stacking unit provided in the present invention can solve the problem of large-scale stacking of mass block carts in the slope-type gravity energy storage system. The upper yard mass block stacking building and the lower yard mass block stacking building can be built against the mountain, with low dependence on the terrain, small footprint, and the stacking height depends only on the bearing capacity of the foundation, and will not be restricted by external factors such as the environment, which greatly improves the safety during stacking; through the mass block operation mode, the energy generated by the movement of the mass blocks in the stacking site is recycled and redeployed. The energy loss of the upper and lower yards can be greatly reduced, and the energy utilization efficiency of the slope-type gravity energy storage system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:
[0026] Figure 1 This is a schematic diagram of the overall structure of the high-efficiency mass block stacking device of the slope-type gravity energy storage system.
[0027] Figure 2 This is a schematic diagram of the internal structure of the upper yard mass block stacking building of the high-efficiency mass block stacking device of the sloped gravity energy storage system.
[0028] Figure 3 Schematic diagram of the process of high-efficiency stacking method of mass blocks in a slope-type gravity energy storage system.
[0029] Figure 4 This is a scheduling control flow chart for a high-efficiency mass stacking method for a slope-type gravity energy storage system. DETAILED DESCRIPTION
[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0032] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.
[0033] Example 1
[0034] Reference Figures 1-2 , which is the first embodiment of the present invention, provides a high-efficiency mass block stacking device for a slope-type gravity energy storage system, which includes a stacking unit 100, which can control the movement of the mass block trolley 105 in the upper yard component 101 and the lower yard component 102 through the main traction component 103 to stack the masses in sequence from low to high floors.
[0035] Specifically, the stacking unit 100 includes an upper stacking yard component 101, a lower stacking yard component 102 disposed on one side of the upper stacking yard component 101, a main traction component 103 disposed on one side of the lower stacking yard component 102, and a main slope 104 disposed on one side of the upper stacking yard component 101;
[0036] A steel cable 104 a is installed at the top of the main slope 104 , and a mass trolley 105 is installed at the top of the upper yard assembly 101 .
[0037] Furthermore, the upper yard assembly 101 includes an upper yard mass block stacking building 101a, an upper approach bridge 101b arranged on the top floor of the upper yard mass block stacking building 101a, and an upper yard platform 101c arranged on one side of the upper yard mass block stacking building 101a;
[0038] The lower yard assembly 102 includes a lower yard mass block stacking building 102a, a lower approach bridge 102b arranged on the top floor of the lower yard mass block stacking building 102a, and a lower yard platform 102c arranged on one side of the lower yard mass block stacking building 102a;
[0039] The upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a have several groups of floors, each group of which is connected by an inter-layer bridge 106. The mass block trolley 105 can move between each group of the upper yard mass block stacking buildings 101a and the lower yard mass block stacking buildings 102a through the inter-layer bridge 106. One end of the upper approach bridge 101b and one end of the lower approach bridge 102b are connected to the two ends of the main slope 104.
[0040] Furthermore, a set of mass block trolley running tracks 107 and several sets of mass block trolley stacking tracks 108 perpendicular to the mass block trolley running tracks 107 are laid on each floor. The spacing of the mass block trolley stacking tracks 108 is set according to the width of the mass block trolley 105.
[0041] Furthermore, the main traction assembly 103 includes a first traction wheel 103a provided on the top floor of the upper yard mass block stacking building 101a, a second traction wheel 103b provided on the top of the lower yard platform 102c, auxiliary traction members 103c provided on both sides of the main traction assembly 103, and a steel cable 103d provided on the top of the main slope 104;
[0042] The auxiliary traction device 103c includes a linear motor primary 103c-1 arranged in the middle of the track of the upper yard mass block stacking building 101a, the lower yard mass block stacking building 102a, the upper approach bridge 101b, the lower approach bridge 102b, the upper yard platform 101c and the lower yard platform 102c, and a linear motor secondary 103c-2 arranged on the bogie of the mass block trolley 105.
[0043] It should be noted that the mass block trolley 105 can enter the top floors of the upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a through the upper approach bridge 101b and the lower approach bridge 102b. The number of floors is determined by the bearing capacity of the foundations corresponding to the upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a, and the floor height is determined by the maximum height of the mass block trolley 105. The mass block trolley 105 can shuttle freely in the entire system.
[0044] The laying rules of the running track 107 include: the running track 107 on the top floor of the upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a is laid in front of the upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a, then the running track 107 of the next floor is laid in the rear side of the upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a, and the running track 107 of the next floor is laid in front of the upper yard mass block stacking building 101a and the lower yard mass block stacking building 102a, and so on, in a cross distribution.
[0045] In summary, the present invention sets up a stacking unit, and the main traction component pulls the mass block trolley into the bottom floor of the upper yard mass block stacking building or the lower yard mass block stacking building, and stacks the blocks in sequence from low to high floors, which greatly improves the safety during stacking, improves the stacking efficiency, and has lower construction costs and greater flexibility.
[0046] Example 2
[0047] Reference Figures 3-4 , which is the second embodiment of the present invention, provides a high-energy-efficiency mass block stacking method for a slope-type gravity energy storage system, including a high-energy-efficiency mass block stacking device for a slope-type gravity energy storage system; and,
[0048] Specifically, the slope-type gravity energy storage system is placed in an energy storage state;
[0049] Putting the slope type gravity energy storage system into a power generation state;
[0050] Control the recovery of kinetic and potential energy of linear motors;
[0051] Information status monitoring and dispatch control of the mass block trolley.
[0052] Furthermore, S1 includes that when the slope gravity energy storage system is in the energy storage state, the mass block trolley on the bottom floor of the lower yard mass block stacking building is preferentially driven to the lower yard platform and connected to the main traction component, and is towed to the main slope by the main traction component; then the other mass block trolleys of the lower yard mass block stacking building pass through the inter-layer connecting bridge in order from low to high in the order of the floors they are in, and enter the lower yard platform, and are connected to the main traction component, and are towed to the main slope by the main traction component; when the mass block trolley is about to drive to the upper yard, the main traction component tows the mass block trolley into the upper approach bridge and reaches the top floor of the upper yard mass block stacking building, and then the mass block trolley is separated from the main traction component; the mass block trolley drives to the upper yard mass block stacking building through the inter-layer connecting bridge, preferentially enters the bottom floor of the upper yard mass block stacking building, and is stacked in sequence from low to high floors.
[0053] Furthermore, S2 includes, when the slope-type gravity energy storage system is in a power generation state, giving priority to allowing the mass block trolley on the bottom floor of the upper yard mass block stacking building to travel to the upper yard platform, and connect to the main traction assembly, and be towed to the main slope by the main traction assembly; then, the other mass block trolleys of the upper yard mass block stacking building pass through the inter-layer connecting bridge in order from low to high in the order of the floors they are in, travel to the bottom floor of the upper yard mass block stacking building, enter the upper yard platform, and connect to the main traction assembly, and be towed to the main slope by the main traction assembly; when the mass block trolley is about to travel to the lower yard, the mass block trolley disengages from the main traction assembly, slides to the lower approach bridge on its own, and reaches the top floor of the lower yard mass block stacking building; then, the mass block trolley travels to the lower yard mass block stacking building through the inter-layer connecting bridge, preferentially enters the bottom floor of the lower yard mass block stacking building, and is stacked in sequence from low to high floors.
[0054] Furthermore, S3 includes setting the linear motor to a feedback braking state to recover the kinetic energy and potential energy of the mass car when the speed of the mass car is too high or needs to travel from a high potential energy point to a low potential energy point.
[0055] Preferably, the primary of the linear motor adopts a segmented control method, activating only the primary of the linear motor adjacent to the position of the mass block cart that needs to be driven; by controlling the linear motor, the mass block cart can be accurately driven to the specified position according to the scheduling requirements.
[0056] Furthermore, the S4 includes setting up mass block trolley status information monitoring devices around the tracks in the upper yard mass block stacking building, the lower yard mass block stacking building, the upper approach bridge, the lower approach bridge, the upper yard platform area, and the lower yard platform area. The sensing devices include but are not limited to laser sensors and ultrasonic sensors. The information collected by the sensing devices is then converted into mass block trolley operation status information, including the current spatial position, current speed, acceleration, etc. of each mass block trolley; and the mass block trolley operation status information is transmitted to the mass block trolley scheduling control algorithm model. The algorithm model will comprehensively consider the current energy state of the sloped gravity energy storage system and the grid scheduling instructions to control the trolleys in the upper yard mass block stacking building and the lower yard mass block stacking building.
[0057] Furthermore, at S1, the recoverable potential energy can be calculated by the following formula:
[0058]
[0059] Among them, m i is the mass of the mass block trolley; C total is the total number of mass blocks involved in the operation; H up h is the total height of the mass block stacking building in the upper yard; p P is the floor height of each floor of the mass block stacking building in the lower yard; i is the floor where the mass block trolley is located when it is in the mass block stacking building in the lower yard; h q Q is the height of each floor of the mass block stacking building in the upper yard; i is the floor where the mass block trolley is located when it is in the mass block stacking building in the upper yard; η is the energy recovery efficiency;
[0060] The recoverable kinetic energy can be calculated as follows:
[0061]
[0062] Among them, v main v is the running speed of the mass trolley on the main traction assembly; set_i is the specified speed of the mass car within the coverage area of the auxiliary traction component given by the scheduling control algorithm.
[0063] It should be noted that the energy released by the stacking device first meets the energy supply required for the start-up of the mass block trolley and the main traction component, and is secondly used to charge the supercapacitor equipped with the slope-type gravity energy storage system. If there is still surplus energy, the energy will be used by the main traction component to lift the heavy object.
[0064] This example compares the traditional technical solution with the method of the present invention, analyzes the current status of the mass block stacking method of the slope-type gravity energy storage system and the problems existing in the existing technology, and verifies and illustrates the technical effects adopted in this method, as shown in Table 1.
[0065]
[0066] In summary, the stacking unit provided in the present invention can solve the problem of large-scale stacking of mass block carts in the slope-type gravity energy storage system. The upper yard mass block stacking building and the lower yard mass block stacking building can be built against the mountain, with low dependence on the terrain and small footprint. The stacking height depends only on the bearing capacity of the foundation and is not restricted by external factors such as the environment, which greatly improves the safety during stacking. Through the mass block operation mode, the energy generated by the movement of the mass blocks in the stacking site is recycled and redeployed. The energy loss of the upper and lower yards can be greatly reduced, and the energy utilization efficiency of the slope-type gravity energy storage system can be improved.
[0067] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0068] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.
[0069] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.
[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A high-efficiency mass stacking device for a slope-type gravity energy storage system, characterized by: include, A stacking unit (100) comprises an upper stacking yard component (101), a lower stacking yard component (102) arranged on one side of the upper stacking yard component (101), a main traction component (103) arranged on one side of the lower stacking yard component (102), and a main slope (104) arranged on one side of the upper stacking yard component (101); A mass trolley (105) disposed on top of the lower yard assembly (102); The upper yard assembly (101) comprises an upper yard mass block stacking building (101a), an upper approach bridge (101b) arranged on the top floor of the upper yard mass block stacking building (101a), and an upper yard platform (101c) arranged on one side of the upper yard mass block stacking building (101a); The lower yard assembly (102) comprises a lower yard mass block stacking building (102a), a lower approach bridge (102b) arranged on the top floor of the lower yard mass block stacking building (102a), and a lower yard platform (102c) arranged on one side of the lower yard mass block stacking building (102a); The upper yard mass block stacking building (101a) and the lower yard mass block stacking building (102a) have several groups of floors, each group is connected by an inter-floor connecting bridge (106), and the mass block trolley (105) can move between each group of the upper yard mass block stacking building (101a) and the lower yard mass block stacking building (102a) through the inter-floor connecting bridge (106), and one end of the upper approach bridge (101b) and one end of the lower approach bridge (102b) are connected to the two ends of the main slope (104); A set of mass trolley running tracks (107) is laid on each floor, and a plurality of sets of mass trolley stacking tracks (108) are perpendicular to the mass trolley running tracks (107), and the spacing of the mass trolley stacking tracks (108) is set according to the width of the mass trolley (105); The main traction assembly (103) includes a first traction wheel (103a) arranged on the top floor of the upper yard mass block stacking building (101a), a second traction wheel (103b) arranged on the top of the lower yard platform (102c), auxiliary traction members (103c) arranged on both sides of the main traction assembly (103), and a steel cable (103d) arranged on the top of the main slope (104).
2. The high-efficiency mass stacking device for a slope-type gravity energy storage system according to claim 1, characterized in that: The auxiliary traction member (103c) comprises a linear motor primary (103c-1) arranged in the middle of the tracks of the upper yard mass block stacking building (101a), the lower yard mass block stacking building (102a), the upper approach bridge (101b), the lower approach bridge (102b), the upper yard platform (101c) and the lower yard platform (102c), and a linear motor secondary (103c-2) arranged on the bogie of the mass block trolley (105).
3. A high-efficiency stacking method for mass blocks of a slope-type gravity energy storage system, characterized by: A high-energy-efficiency mass block stacking device for a slope-type gravity energy storage system comprising any one of claims 1 to 2; as well as, Putting the slope type gravity energy storage system into an energy storage state; Putting the slope type gravity energy storage system into a power generation state; Control the recovery of kinetic and potential energy of linear motors; Information status monitoring and dispatch control of the mass block trolley.
4. The high-energy-efficiency stacking method for mass blocks of a slope-type gravity energy storage system according to claim 3, characterized in that: When the slope-type gravity energy storage system is in the energy storage state, the mass block trolley on the bottom floor of the mass block stacking building in the lower yard is preferentially driven to the lower yard platform, and the main traction assembly pulls the mass block trolley into the main slope; then the other mass block trolleys in the mass block stacking building in the lower yard pass through the inter-layer connecting bridge in order from low to high in the order of the floors they are located to the bottom floor of the mass block stacking building in the lower yard and enter the lower yard platform, and the main traction assembly pulls the mass block trolley into the main slope; when the mass block trolley is about to drive to the upper yard, the main traction assembly pulls the mass block trolley into the upper approach bridge and reaches the top floor of the mass block stacking building in the upper yard, and then the mass block trolley is separated from the main traction assembly; The mass block trolley travels through the inter-layer connecting bridge to the upper yard mass block stacking building, and is given priority to enter the bottom floor of the upper yard mass block stacking building for stacking.
5. The high-energy-efficiency stacking method for mass blocks of a slope-type gravity energy storage system according to claim 4, characterized in that: When the slope-type gravity energy storage system is in the power generation state, the mass block trolley on the bottom floor of the upper yard mass block stacking building is preferentially driven to the upper yard platform, and the main traction assembly pulls the mass block trolley into the main slope; then the other mass block trolleys in the upper yard mass block stacking building pass through the inter-layer connecting bridge in order from low to high according to the order of the floors they are located in, and drive to the bottom floor of the upper yard mass block stacking building, and enter the upper yard platform, and the main traction assembly pulls the mass block trolley into the main slope; when the mass block trolley is about to drive to the lower yard, the mass block trolley separates from the main traction assembly, slides to the lower approach bridge on its own, and reaches the top floor of the lower yard mass block stacking building; then the mass block trolley drives through the inter-layer connecting bridge to the lower yard mass block stacking building, and preferentially enters the bottom floor of the lower yard mass block stacking building for stacking.
6. The high-energy-efficiency stacking method for mass blocks of a slope-type gravity energy storage system according to claim 5, characterized in that: When the speed of the mass car is too high or it needs to travel from a high potential energy point to a low potential energy point, the linear motor is set to a feedback braking state to recover the kinetic energy and potential energy of the mass car.
7. The high-energy-efficiency mass stacking method for a slope-type gravity energy storage system according to claim 6, characterized in that: Mass block trolley status information monitoring devices are set up around the tracks in the upper yard mass block stacking building, the lower yard mass block stacking building, the upper approach bridge, the lower approach bridge, the upper yard platform area and the lower yard platform area. The sensing devices include laser sensors and ultrasonic sensors; the information collected by the sensing devices is then converted into mass block trolley operation status information, including the current spatial position, current speed and acceleration of each mass block trolley; and the mass block trolley operation status information is transmitted to the mass block trolley scheduling control algorithm model. The algorithm model will comprehensively consider the current energy state of the sloped gravity energy storage system and the power grid scheduling instructions to control the trolleys in the upper yard mass block stacking building and the lower yard mass block stacking building.
8. The high-energy-efficiency mass stacking method for a slope-type gravity energy storage system according to claim 7, characterized in that: The recoverable potential energy can be calculated as follows: in, is the mass of the mass block trolley; is the total number of mass carts involved in the operation; is the total height of the mass block stacking building in the upper yard; The height of each floor of the mass block stacking building in the lower yard; This is the floor where the mass block trolley is located when it is in the mass block stacking building in the lower yard; The height of each floor of the mass block stacking building in the upper yard; This is the floor where the mass block trolley is located when it is in the mass block stacking building in the upper yard; is the energy recovery efficiency; The recoverable kinetic energy can be calculated as follows: in, is the running speed of the mass trolley on the main traction assembly; is the specified speed of the mass car within the coverage area of the auxiliary traction component given by the scheduling control algorithm.