Energy storage system and energy storage power station

Abstract

The utility model relates to the technical field of energy storage equipment, and discloses an energy storage system and an energy storage power station, and the energy storage system comprises hoisting equipment, a power generation and electric all-in-one machine and electric energy storage equipment. The hoisting equipment is provided with a lifting mechanism, and the lifting mechanism has a lifting state and a falling state; the power generation and electric all-in-one machine is connected with the lifting mechanism; the electric energy storage equipment is electrically connected with the power generation and electric integrated machine; in the lifting state, the electric energy storage equipment supplies power to the power generation and electric all-in-one machine, the power generation and electric all-in-one machine drives the lifting mechanism to lift the materials, and in the falling state, the materials fall by means of self weight and drive the lifting mechanism to drive the power generation and electric all-in-one machine to generate power, so that electric energy is stored in the electric energy storage equipment. According to the energy storage system, in the falling state, the lifting mechanism can drive the power generation and electric all-in-one machine to generate power, potential energy of materials is converted into electric energy, the electric energy is stored in the electric energy storage equipment, in the lifting state, the stored electric energy is released to be used for lifting the materials, electric energy consumption is saved, and use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage equipment technical field, concretely relates to energy storage system and energy storage power station. BACKGROUND

[0002] In the scene of port, warehouse, etc., hoisting equipment is often needed to carry material. In order to reduce the pollution to the environment, the existing hoisting equipment usually adopts the electric mode to lift the material to the predetermined height storage, and then the material falls to the designated area to be taken out.

[0003] At present, the hoisting equipment adopting the electric mode needs to consume a large amount of electric energy when carrying the material to lift and fall, and the energy consumption is too large, and the use cost is higher. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides an energy storage system and energy storage power station to solve the problem of high use cost caused by large electric energy consumption of hoisting equipment.

[0005] In the first aspect, the utility model provides an energy storage system, which comprises:

[0006] The hoisting equipment is provided with a lifting mechanism, and the lifting mechanism has a lifting state and a falling state;

[0007] The power generation and electric drive integrated machine is connected with the lifting mechanism;

[0008] The power storage equipment is electrically connected with the power generation and electric drive integrated machine;

[0009] In the lifting state, the power storage equipment supplies power to the power generation and electric drive integrated machine, and the power generation and electric drive integrated machine drives the lifting mechanism to lift the material; in the falling state, the material falls by gravity and drives the power generation and electric drive integrated machine to generate electricity, so as to store the electric energy in the power storage equipment.

[0010] The energy storage system of the utility model realizes lifting or falling of material through the hoisting equipment, in the falling state, the material falls by gravity and drives the power generation and electric drive integrated machine to generate electricity, so as to convert the potential energy of the material into electric energy and store it. In the lifting state, the stored electric energy is released to lift the material, which saves the consumption of electric energy and reduces the use cost.

[0011] In an alternative embodiment, the lifting mechanism comprises:

[0012] The lifting appliance is suitable for connecting the material;

[0013] The winch is arranged on the hoisting equipment and is electrically connected with the power generation and electric drive integrated machine through the transmission mechanism;

[0014] The flexible cable is connected with the lifting appliance and the winch respectively.

[0015] Beneficial effects: in the lifting state, the power generation and motor integrated machine drives the hoist to rotate forward, the hoist transmits the movement to the lifting tool through the flexible cable, the lifting tool drives the material to rise, and the potential energy of the material increases. In the falling state, the material falls under the action of gravity and drives the hoist to rotate reversely through the flexible cable, the hoist drives the power generation and motor integrated machine to generate electricity, the potential energy of the material is converted into electric energy, the electric energy is recycled, and the utilization rate of the electric energy is improved.

[0016] In an alternative embodiment, the lifting mechanism further comprises:

[0017] The moving platform is arranged on the cross beam of the hoisting equipment, and the lifting tool is arranged on the moving platform.

[0018] Beneficial effects: the lifting mechanism can drive the lifting tool and the material hoisted by the lifting tool to move horizontally through the moving platform, so that the material can be stacked and stored at a high place or moved to a designated falling area.

[0019] In an alternative embodiment, the transmission mechanism comprises a speed reducer, the input end of the speed reducer is connected with the power generation and motor integrated machine through a shaft coupling, and the output end of the speed reducer is connected with the hoist.

[0020] Beneficial effects: the speed reducer can reduce the rotating speed of the power generation and motor integrated machine, so as to adapt to the lifting speed of the material and facilitate use.

[0021] In an alternative embodiment, the flexible cable is a steel wire rope.

[0022] Beneficial effects: the flexible cable is a steel wire rope, which has a simple structure and low use cost.

[0023] In an alternative embodiment, the power generation and motor integrated machine and the electric energy storage device are arranged on the hoisting equipment.

[0024] Beneficial effects: the power generation and motor integrated machine and the electric energy storage device are arranged on the hoisting equipment, so that the hoisting equipment does not need to be connected to an external power source, long-distance operation can be realized, the hoisting equipment can be used in a scene without external power source, and the occupation space of the power generation and motor integrated machine and the electric energy storage device is reduced.

[0025] In an alternative embodiment, the power generation and motor integrated machine and the electric energy storage device are arranged outside the hoisting equipment.

[0026] Beneficial effects: the power generation and motor integrated machine and the electric energy storage device are arranged outside the hoisting equipment, and do not affect the hoisting equipment, so that the reliability is improved.

[0027] In a second aspect, the utility model also provides a kind of energy storage power station, comprising:

[0028] The power station body is suitable for storing materials.

[0029] The plurality of energy storage systems are arranged in the power station body.

[0030] Beneficial effects: because the energy storage power station includes a plurality of energy storage systems, it has the same effect as the energy storage system, that is, through the lifting device to realize the lifting or falling of the material, in the falling state, the material falls by gravity and drives the power generation and motor integrated machine to generate electricity, which can convert the potential energy of the material into electrical energy storage. In the lifting state, the stored electrical energy is released for lifting the material, saving the consumption of electrical energy and reducing the use cost. In addition, the energy storage power station also has the function of storing materials, which is convenient to use.

[0031] In an alternative embodiment, the power storage device is arranged outside the lifting device, and a plurality of power storage devices form a power storage device group, which is adapted to be electrically connected with the power consumption device.

[0032] Beneficial effects: the power storage device is arranged outside the lifting device, and a plurality of power storage devices form a power storage device group, which is adapted to be electrically connected with the power consumption device. The electrical energy recovered by the material recycling can also be distributed to other power consumption devices, not just limited to auxiliary lifting devices, which improves the use range of the energy storage power station, further improves the utilization rate of electrical energy, and reduces the use cost.

[0033] In an alternative embodiment, a power distribution device is further included, and the plurality of energy storage systems are respectively electrically connected with the power distribution device.

[0034] Beneficial effects: the plurality of energy storage systems are respectively electrically connected with the power distribution device, which can transmit the electrical energy recovered by the plurality of energy storage systems to the power distribution device for unified distribution, improving the power consumption efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0036] Fig. 1 It is a structure schematic view of an energy storage system of an embodiment of the present application.

[0037] Fig. 2 It is a partial structure schematic view of an energy storage system of an embodiment of the present application.

[0038] Fig. 3 It is a structure schematic view of an energy storage power station of an embodiment of the present application.

[0039] Explanation of reference signs:

[0040] 1, hoisting equipment; 2, lifting mechanism; 201, lifting appliance; 202, winch; 203, flexible cable; 204, moving platform; 3, power generation and motor integrated machine; 4, power storage equipment; 5, transmission mechanism; 6, power station body; 7, material; 8, truck. DETAILED DESCRIPTION

[0041] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] The existing hoisting equipment consumes too much electric energy, resulting in high use cost. The embodiments of the present application can convert the potential energy of the material into electric energy storage, and release the stored electric energy for lifting the material in the lifting state, saving the consumption of electric energy and reducing the use cost.

[0043] The embodiments of the present application will be described below with reference to the drawings. Figs. 1 to 3

[0044] According to the embodiments of the present application, on the one hand, as shown in Fig. 1 , a kind of energy storage system is provided, mainly including: hoisting equipment 1, power generation and motor integrated machine 3 and power storage equipment 4. Hoisting equipment 1 is equipped with lifting mechanism 2, and lifting mechanism 2 has lifting state and falling state. Power generation and motor integrated machine 3 is connected with lifting mechanism 2. Power storage equipment 4 is electrically connected with power generation and motor integrated machine 3. In lifting state, power storage equipment 4 supplies power for power generation and motor integrated machine 3, and power generation and motor integrated machine 3 drives lifting mechanism 2 to lift material 7, in falling state, material 7 falls by gravity and drives lifting mechanism 2 to drive power generation and motor integrated machine 3 to generate electricity, to store electric energy in power storage equipment 4.

[0045] The energy storage system of the embodiments of the present application realizes lifting or falling material 7 by hoisting equipment 1, in falling state, material 7 falls by gravity and drives power generation and motor integrated machine 3 to generate electricity by lifting mechanism 2, which can convert the potential energy of material 7 into electric energy storage. In lifting state, the stored electric energy is released for lifting material 7, saving the consumption of electric energy and reducing the use cost. Power storage equipment 4 assists power generation and motor integrated machine 3 to start, which can reduce the starting power consumption of power generation and motor integrated machine 3.

[0046] ​It should be noted that the lifting device 1 is not limited in the embodiments of the present application, as long as the lifting device 1 has the lifting mechanism 2 capable of lifting the material 7, and the lifting device 1 includes but is not limited to a tire crane, a bridge crane and the like. In addition, the specific structure of the lifting mechanism 2 is also not limited.

[0047] In addition, considering that the lifting mechanism 2 consumes a large amount of electric energy in the lifting state, the lifting mechanism 2 is also electrically connected to an external power grid, and the lifting mechanism 2 is powered by the external power grid and the power storage device 4 together.

[0048] In one embodiment, the lifting mechanism 2 mainly includes a sling 201, a winch 202 and a flexible cable 203. The sling 201 is suitable for connecting the material 7. The specific form of the sling 201 connecting the material 7 can be selected and set according to actual needs, and the embodiments of the present application do not make too many limitations thereon. The winch 202 is arranged on the lifting device 1 and is electrically connected to the power generation and motor integrated machine 3 through the transmission mechanism 5. The flexible cable 203 is connected to the sling 201 and the winch 202 respectively.

[0049] In the lifting state, the power generation and motor integrated machine 3 drives the winch 202 to rotate forward, the winch 202 transmits the motion to the sling 201 through the flexible cable 203, the sling 201 lifts the material 7, and the potential energy of the material 7 is large. In the falling state, the material 7 falls by relying on the dead weight and drives the winch 202 to rotate reversely through the flexible cable 203, the winch 202 drives the power generation and motor integrated machine 3 to generate electricity, converts the potential energy of the material 7 into electric energy, stores the electric energy, realizes the recycling of the electric energy, and improves the utilization rate of the electric energy.

[0050] Further, in one embodiment, the lifting mechanism 2 further includes a moving platform 204. The moving platform 204 is arranged on the cross beam of the lifting device 1, and the sling 201 is arranged on the moving platform 204. The lifting mechanism 2 can drive the sling 201 and the material 7 hoisted thereby to move horizontally through the moving platform 204, so as to stack and store the material 7 at a high place, or move the material 7 to a designated falling area. In addition, a truck 8 is arranged in the falling area in advance, and the material 7 directly falls to the truck 8, which is transported by the truck 8. Of course, other transport vehicles such as a cargo ship can also be selected according to needs.

[0051] Specifically, the moving platform 204 can be a carrier vehicle, and the cross beam of the lifting device 1 is provided with a track for horizontal movement of the carrier vehicle, and the sling 201 is connected below the carrier vehicle through a traction steel wire rope. The carrier vehicle moves back and forth on the track to drive the sling 201 to move horizontally.

[0052] In one embodiment, as Fig. 2As shown, the transmission mechanism 5 comprises a speed reducer. The input end of the speed reducer is connected with the power generation and motor integrated machine 3 through a shaft coupling, and the output end of the speed reducer is connected with the winch 202. The speed reducer can adopt any existing structure, for example, a two-stage gear speed reducer. Through the speed reducer, the rotating speed of the power generation and motor integrated machine 3 can be reduced to adapt to the speed of lifting the material 7, which is beneficial to use.

[0053] It should be noted that the embodiment of the utility model does not limit the flexible cable 203, as long as the flexible cable 203 can be connected with the lifting appliance 201 and the winch 202 respectively, and the effect of transmitting motion can be achieved. In an embodiment, the flexible cable 203 is a steel wire rope, which is simple in structure and low in use cost.

[0054] Specifically, the power generation and motor integrated machine 3 receives the power when the winch 202 reversely rotates in the falling state, and the relative motion between the magnetic field in the power generation and motor integrated machine 3 and the conductor generates an electric potential, that is, the mechanical energy is converted into electrical energy, and then the electrical energy is stored in the power storage device 4. The power generation and motor integrated machine 3 is powered by the external power grid and the power storage device 4 in the lifting state, and drives the winch 202 to rotate forward through the transmission mechanism 5, and lifts the material 7 through the flexible cable 203 and the lifting appliance 201.

[0055] In addition, the power storage device 4 can adopt existing devices that can store and release electrical energy, such as batteries, super capacitors, etc.

[0056] In an embodiment, the power generation and motor integrated machine 3 and the power storage device 4 are arranged on the hoisting device 1. The hoisting device 1 does not need to be connected to an external power source, can realize long-distance operation, can be used in a scene without an external power source, and also reduces the occupied space of the power generation and motor integrated machine 3 and the power storage device 4.

[0057] Specifically, the power generation and motor integrated machine 3 and the power storage device 4 are fixedly arranged in the machine room of the hoisting device 1 by screws. The power generation and motor integrated machine 3 and the power storage device 4 form an integral whole with the hoisting device 1, occupy small space, and are convenient to install.

[0058] Taking a shore crane in a port as an example, the power generation and motor integrated machine 3 and the power storage device 4 are separately arranged on each shore crane to form a distributed energy storage. A plurality of shore cranes in the port can form a plurality of distributed energy storage systems.

[0059] In an embodiment, the power generation and motor integrated machine 3 and the power storage device 4 are arranged outside the hoisting device 1. The power generation and motor integrated machine 3 and the power storage device 4 are arranged outside the hoisting device 1 and do not affect each other, which improves the reliability.

[0060] To realize the basic function of the energy storage system, the energy storage system in the embodiment can further include other necessary modules or components, such as a controller, a wire, and the like. It should be noted that the other necessary modules or components included in the energy storage system can be selected from any suitable existing configuration. To clearly and simply illustrate the technical solutions provided in the embodiment, the above-mentioned parts will not be described in detail here, and the accompanying drawings of the specification are also simplified accordingly. However, it should be understood that the practical new type is not limited in scope.

[0061] According to the embodiment of the utility model, on the other hand, as Fig. 3 indicated, an energy storage power station is also provided, mainly comprising: a power station body 6 and a plurality of energy storage systems. The power station body 6 is suitable for storing materials 7. A plurality of hoisting devices 1 are arranged in the power station body 6.

[0062] Because the energy storage power station includes a plurality of energy storage systems, it has the same effect as the energy storage system, that is, through the hoisting device 1, the material 7 is lifted or dropped, in the dropping state, the material 7 relies on the weight to drop and drives the power generation and motor integrated machine 3 to generate electricity through the lifting mechanism 2, which can convert the potential energy of the material 7 into electrical energy storage. In the lifting state, the stored electrical energy is released to lift the material 7, saving the consumption of electrical energy and reducing the use cost. In addition, the energy storage power station also has the function of storing materials 7, which is convenient to use.

[0063] Specifically, the energy storage power station is also connected with a new energy power station, and the potential energy stored therein is used for peak regulation and flattening of the new energy power station, which makes up for the disadvantage of instability of the new energy power station. The new energy power station can adopt a wind power station, a photovoltaic power station, etc.

[0064] Specifically, the power station body 6 is internally provided with a room, and the material 7 can be stored at a certain height from the ground. The material 7 can be stacked and stored in the room. For example, the power station body 6 is arranged in a port, and the material 7 can be a container. In addition, the power station body 6 is also electrically connected with an external power grid, such as a power distribution network of the port. Each hoisting device 1 is individually provided with a power storage device 4 and a power generation and motor integrated machine 3. The plurality of hoisting devices 1 work cooperatively, and in accordance with a set order, are sequentially in a lifting state to release electrical energy, and in a dropping state, convert the potential energy of the material 7 into electrical energy storage, to ensure that the power station body 6 is

[0065] Since the storage capacity of the single power storage device 4 is limited and uneven, in order to improve the storage capacity and reliability of the energy storage power station, in an embodiment, the power storage device 4 is arranged outside the hoisting device 1, and a plurality of power storage devices 4 form an energy storage device group, and the energy storage device group is adapted to be electrically connected with the power utilization device. The power storage device 4 is arranged outside the hoisting device 1, and a plurality of power storage devices 4 form an energy storage device group, and the energy storage device group and the plurality of materials 7 form a centralized energy storage. The energy storage device group is adapted to be electrically connected with the power utilization device, and the recovered electric energy of the material 7 can also be distributed to other power utilization devices, not limited to the auxiliary hoisting device 1, thereby improving the use range of the energy storage power station, further improving the utilization rate of electric energy, and reducing the use cost.

[0066] In addition, the embodiment of the utility model cooperates the distributed energy storage with the centralized energy storage, can form complementation, combines the advantages of both, realizes the long-time energy storage demand, improves the stability of the new energy power station, can maximize the recovery of energy, and improves the energy utilization rate.

[0067] In an embodiment, the energy storage power station further comprises a power management system, and the plurality of energy storage systems are electrically connected with the power management system. Specifically, the power management system is further provided with a super capacitor, and the plurality of power generation and motoring integrated machines 3 are electrically connected with the super capacitor, so that the recovered electric energy can be directly transmitted to the super capacitor for storage. The power management system can also be connected with other power sources.

[0068] Since the lifting mechanisms 2 of different energy storage systems can be in the lifting state and the falling state at the same time, the energy storage power station of the embodiment of the utility model can also uniformly distribute the electric energy recovered by the plurality of energy storage systems through the power management system, thereby improving the power utilization efficiency. Specifically, the power management system can distribute the electric energy recovered by the plurality of energy storage systems and the electric energy of other power sources to other hoisting devices 1, other power utilization devices or new energy power stations.

[0069] Taking the energy storage power station for storing the containers moved from the cargo ship to the port of the port as an example, the working process of the embodiment of the utility model is as follows:

[0070] The container is transported to the designated area in advance by the cargo ship, the carrying vehicle of the shore crane moves the lifting tool 201 to the area, and the winch 202 lowers the flexible cable 203, so that the lifting tool 201 can be connected with the container. Then, the lifting mechanism 2 enters the lifting state, the power storage device 4 on the shore crane supplies power to the power generation and motor integrated machine 3, the power generation and motor integrated machine 3 drives the winch 202 to rotate forward, the winch 202 transmits the motion to the lifting tool 201 through the flexible cable 203, and the container is lifted to a certain height by the lifting tool 201. The carrying vehicle moves transversely to drive the container to move above the truck 8, then the lifting mechanism 2 enters the falling state, the container falls by gravity and drives the winch 202 to rotate reversely through the flexible cable 203, the winch 202 drives the power generation and motor integrated machine 3 on the shore crane to generate electricity, and the potential energy of the container is converted into electrical energy for storage. The container finally falls to the truck 8. The truck 8 transports the container to the designated area of the power station body 6.

[0071] The lifting tool 201 is moved to the position of the truck 8 by the carrying vehicle of the hoisting device 1 at the power station body 6, and the winch 202 lowers the flexible cable 203, so that the lifting tool 201 can be connected with the container. Then, the lifting mechanism 2 enters the lifting state, the power management system supplies power to the power generation and motor integrated machine 3, the power generation and motor integrated machine 3 drives the winch 202 to rotate forward, the winch 202 transmits the motion to the lifting tool 201 through the flexible cable 203, and the container is lifted to a certain height by the lifting tool 201, and the potential energy of the container is increased. Finally, the container is stored in the power station body 6 by transverse movement of the carrying vehicle.

[0072] When power generation or container unloading and delivery is required, the truck 8 is parked in the designated falling area in advance, the carrying vehicle moves the lifting tool 201 to the corresponding container and is connected with the container. Then, the container is moved above the falling area. The lifting mechanism 2 enters the falling state, the container falls by gravity and drives the winch 202 to rotate reversely through the flexible cable 203, the winch 202 drives the power generation and motor integrated machine 3 to generate electricity, and the potential energy of the container is converted into electrical energy for storage. The container finally falls to the truck 8, and after the lifting tool 201 is separated from the container, the container is moved away from the energy storage power station by the truck 8.

[0073] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. An energy storage system, characterized in that: include: A lifting device (1) is provided with a lifting mechanism (2), wherein the lifting mechanism (2) has a lifting state and a lowering state; A generator and motor-electric integrated machine (3) connected to the lifting mechanism (2); An electric energy storage device (4) is electrically connected to the generator-motor integrated machine (3); In the lifting state, the power storage device (4) supplies power to the generator-motor integrated machine (3), and the generator-motor integrated machine (3) drives the lifting mechanism (2) to lift the material (7); in the falling state, the material (7) falls by its own weight and drives the lifting mechanism (2) to drive the generator-motor integrated machine (3) to generate electricity, so as to store electrical energy in the power storage device (4); The lifting mechanism (2) comprises: A sling (201) adapted to connect the material (7); A hoist (202) is provided on the lifting device (1) and is electrically connected to the generator-motor integrated machine (3) via a transmission mechanism (5); Flexible cables (203) are respectively connected to the sling (201) and the hoist (202); The lifting mechanism (2) further comprises: A mobile platform (204) is arranged on the crossbeam of the lifting device (1), and the sling (201) is arranged on the mobile platform (204).

2. The energy storage system according to claim 1, characterized in that The transmission mechanism (5) includes a reducer, the input end of the reducer is connected to the generator-motor integrated machine (3) via a coupling, and the output end of the reducer is connected to the hoist (202).

3. The energy storage system according to claim 1, characterized in that The flexible rope (203) is a steel wire rope.

4. The energy storage system according to claim 1, characterized in that The integrated generator and motor (3) and the power storage device (4) are arranged on the lifting device (1).

5. The energy storage system according to claim 1, characterized in that: The integrated generator and motor (3) and the power storage device (4) are arranged outside the lifting device (1).

6. An energy storage power station, characterized in that: include: The power station body (6) is suitable for storing materials (7); The energy storage system according to any one of claims 1 to 5, wherein the plurality of lifting devices (1) are arranged at intervals within the power station body (6).

7. The energy storage power station according to claim 6, characterized in that: The power energy storage device (4) is arranged outside the lifting device (1), and a plurality of the power energy storage devices (4) form an energy storage device group, and the energy storage device group is suitable for being electrically connected to an electrical device.

8. The energy storage power station according to claim 7, characterized in that: It also includes power distribution equipment, and the multiple energy storage systems are electrically connected to the power distribution equipment respectively.

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