CN118062179A - Water power exchange station and power exchange method thereof - Google Patents

Abstract

The invention relates to a water power exchange station and a power exchange method thereof. The power exchange station is provided with a buoyancy station open to the water surface for docking a battery buoyancy module to be replaced, which can be detachably attached to the buoyancy station such that the battery buoyancy module can be floated in the buoyancy station for facilitating docking of the battery buoyancy module. The water power exchange station is convenient to set, and the battery buoyancy cabin can be conveniently and rapidly connected by means of the buoyancy of water, so that the sailing timeliness of the water carrier is ensured, and the sailing cost is saved.

Description

Water power exchange station and power exchange method thereof

Technical Field

The invention relates to the technical field of water traffic equipment, in particular to a water power exchange station and a power exchange method thereof.

Background

Diesel oil is generally used as an energy source for inland water ships, so that the cost is high, the noise is high, and the environmental pollution is easy to cause. In recent years, along with the development of technology, the acquisition and storage of electric power are more and more convenient, the electricity cost is also reduced, and the electric power is gradually replaced by diesel oil as the power energy of ships in inland water areas due to the characteristics of cleanness, environmental protection, low cost and the like.

At present, a ship using electric power as an energy source is mainly a pleasure boat for fixing a short-distance route, a power battery of the ship is fixedly stored in a cabin, and the ship needs to be on shore to charge the power battery; there are also few freight ships that use battery energy storage containers to continue to supply power to the ship by lifting and replacing electricity by shore.

However, for most vessels in inland water, there is a continuous requirement for sailing, and it may be several days and several nights for one voyage, and for the current battery energy storage cost, if the vessel is provided with an energy storage battery meeting 24-hour sailing, the battery cost is about 3 times or more of the cost of the vessel, and in order to save the cost, the vessel needs to use a power-exchanging and charging mode to power and run.

The existing ship power exchange station generally needs to hoist and exchange electricity, needs to be equipped with a special wharf or ship with hoisting operation capability, has severe use conditions, large power exchange process amount and long time, and is difficult to popularize and realize.

Disclosure of Invention

In view of the above, the present invention provides a water power plant and a method of power conversion that solves or at least alleviates one or more of the above-identified problems and other problems of the prior art.

In order to achieve the foregoing object, a first aspect of the present invention provides a water power exchange station, wherein the power exchange station is provided with a buoyancy station open to the water surface for docking a battery pod to be replaced, the battery pod being detachably attachable to the buoyancy station such that the battery pod is floatable in the buoyancy station for facilitating docking of the battery pod.

In the aforementioned exchange station, optionally, the exchange station is a semi-submersible pontoon.

In the aforementioned power exchange station, optionally, the buoyancy station is arranged in a lower part of the power exchange station or in open air at a side of the power exchange station.

In the power exchange station as described above, optionally, the power exchange station is provided with a plurality of said buoyancy stations, each of said buoyancy stations being provided with a fixture for attaching said battery compartment and each of said buoyancy stations being provided with or being provided with a charging gun for charging said battery compartment.

In the power exchange station as described above, optionally, the fixing means comprises electromagnetic adsorption means for adsorbing and fixing the battery compartment in the buoyancy position when the battery compartment is docked.

In the power exchange station as described above, optionally, several adjacent buoyancy stations constitute one connection station, each of which is provided with an anchor adapted to receive a power exchange vessel or a water carrier for connecting a battery buoyancy module in the buoyancy station, the anchor being adapted to temporarily anchor the power exchange vessel or the water carrier to the connection station.

In the aforementioned power exchange station, optionally, a limiting device is arranged on the side surface of each buoyancy position and/or each connection position, and the limiting device is a baffle plate, a stop rod or a stop rope.

In the power exchange station as described above, optionally, the buoyancy station has an open channel for the battery buoyancy module towed when docking the battery buoyancy module to float in and out of the buoyancy station; and/or the bottom of the buoyancy position is of an open structure, and when the power exchange station is moored on water, the battery buoyancy cabin floats on the water surface at the buoyancy position.

In the power exchange station as described above, optionally, the power exchange station has buoyancy adjustment means for adjusting the draft of the buoyancy bit, the buoyancy adjustment means being symmetrically arranged at the power exchange station; and/or the power exchange station is provided with a power transformation facility, wherein the power transformation facility is used for providing a charging power supply for a battery buoyancy cabin positioned in the buoyancy position; and/or an operation area is arranged above the buoyancy position, and a living area and/or an office area are arranged above the operation area.

In order to achieve the foregoing object, a second aspect of the present invention provides a method of changing power to a water carrier passing through the power changing station using the water power changing station as in any one of the preceding aspects, wherein the power changing station is used to directly dock a battery compartment to the water carrier, or a power changing vessel is used to dock a battery compartment from the power changing station and then to change power to the water carrier by the power changing vessel.

The water power exchange station can be moored in inland water areas, is provided with a buoyancy position which is open on the water surface, provides buoyancy for the battery buoyancy cabin positioned in the water power exchange station, and is convenient for connecting the battery buoyancy cabin to be replaced.

The water power exchange station can receive the power exchange ship or the water carrier, and conveniently and rapidly connect the battery buoyancy chamber to the power exchange ship or the water carrier from the buoyancy position of the power exchange station through the buoyancy of water to the battery buoyancy chamber, so that the connection of the battery buoyancy chamber is completed.

The invention also provides a method for replacing electricity by using the water power replacing station, and the method can quickly and conveniently replace the battery floating cabin of the water carrier.

Drawings

The present disclosure will become more apparent with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the invention. In the figure:

FIG. 1 is a schematic perspective view of an embodiment of a water power plant of the present invention; and

Fig. 2 is an enlarged schematic view of a part of the docking station of the embodiment of the water power station in fig. 1.

Reference numerals: 1-a water power exchange station; 2-buoyancy bit; 3-a battery buoyancy module; 4-anchoring parts; 5-charging gun; 6-connection position; 7-a limiting device; 8-buoyancy adjusting devices; 9-a power transformation facility; 10-living areas; 11-operating zone.

Detailed Description

The structure, composition, characteristics and advantages of the power exchange station of the invention will be described below by way of example with reference to the accompanying drawings and to specific embodiments, however, all of the description should not be taken to limit the invention in any way.

Furthermore, to the extent that any individual feature described or implied in the embodiments set forth herein, or any individual feature shown or implied in the figures, the invention still allows any combination or deletion of such features (or equivalents thereof) without any technical hurdle, and further embodiments according to the invention are considered to be within the scope of the disclosure herein.

It should also be noted that the terms "upper," "lower," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, i.e., when the water power station resides on water, and are merely for convenience in describing the present disclosure and simplifying the description, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure.

Fig. 1 is a schematic perspective view of an embodiment of a water power exchange station according to the present invention. The water line of the power exchange station is schematically shown in horizontal dashed lines when it is moored or installed on water.

As shown in the figure, the water power exchange station 1 of the invention can store the power exchange of the water supply upper carrier of the battery floating cabin 3. The above water power exchange station 1 may be moored for use on water, for example in marine waters such as offshore and inland waters, which may be for example, but not limited to, rivers, lakes, etc. Hereinafter, an inland water area will be described as an example, but is not limited thereto. As can be seen from the figure, the above water power station provides a docking area, an operating area, a living/office area. In this example, the buoyancy bit is located in the docking area for docking of the battery buoyancy module; the operation area is positioned above the connection area and is used for operating the connection of the battery buoyancy chamber and/or the charging of the battery buoyancy chamber when a worker is connected; the living/working area is positioned on the top layer of the water power exchange station 1 and can be used for providing living, working, entertainment and other spaces.

When the station 1 is moored in a body of water, its docking area is partly under water. As shown in the figure, the buoyancy station 2 is open to the water surface and can be used to dock a battery buoyancy module 3 to be replaced. The battery buoyancy tanks 3 may be stored in the buoyancy station 2 prior to docking or transferred to the buoyancy station 2 from a further battery buoyancy tank storage station (not shown). The battery pod 3 may be charged at the buoyancy bit 2 or storage bit.

In the illustrated example, eight buoyancy bits are provided in total at the docking area, of which six battery buoyancy tanks 3 are shown on the left, and every two buoyancy bits constitute one docking station, which provides four docking stations in total. Each connection position can receive a battery exchange ship, and the battery buoyancy tanks in two adjacent buoyancy positions are connected by the battery exchange ship and pulled away from the battery exchange station with the aid of water surface buoyancy.

As can be seen from fig. 1, the buoyancy place 2 for storing the battery buoyancy module 3 can be partially submerged, so that water in inland water areas can enter the buoyancy place 2, as shown by a horizontal dotted line in the figure as a water line, to provide buoyancy for the battery buoyancy module 3, and to reduce the traction force of the battery buoyancy module 3, so that the battery buoyancy module 3 can be quickly and conveniently pulled to a place to be replaced, such as a replacement ship or a water carrier.

In different embodiments, the battery buoyancy module 3 can be completely floated on the water surface and is not supported by the bottom plate at the buoyancy position 2, or the battery buoyancy module 3 can reduce the support of the bottom plate through buoyancy, so that the functions of reducing traction and facilitating connection are achieved.

It should be noted that, the battery buoyancy module 3 herein is a power battery unit that can be integrally detached from the water carrier and separately transported to the water power exchange station for charging, and in some embodiments, the cabin body of the buoyancy module may be in the form of a battery housing, and the power battery is embedded in or covered by the battery housing to provide insulation and waterproof protection for the battery. When the battery buoyancy chamber 3 is stored in the buoyancy position 2 of the water power exchange station 1 and is connected with the buoyancy position 2, the battery buoyancy chamber can be conveniently towed under the buoyancy effect.

The connection position of the power exchange station 1 can accommodate a power exchange ship or a water carrier to stop for power exchange, and particularly, the power exchange station 1 can conveniently and quickly connect the battery buoyancy chamber 3 through traction by means of buoyancy of water to the battery buoyancy chamber 3. Where the docking may include removal from the buoyancy station 2 and recovery of the battery buoyancy module 3 to the buoyancy station. In an alternative embodiment, the buoyancy station 2 may also be located entirely under water, as long as the battery buoyancy module 3 floats on the buoyancy station 2 during a power change without affecting its insulation and waterproof assurance function.

The water power exchange station 1 can be provided with a plurality of other buoyancy positions 2 for storing a plurality of battery buoyancy cabins 3 for supplying power for passing water carriers and providing different power exchange capacities for the water power exchange station. In addition, an independent battery buoyancy module storage position can be arranged for storing and charging the battery buoyancy module, and the battery buoyancy module can be transferred to the buoyancy position 2 when required only after the battery buoyancy module is fully charged and is ready for replacement.

The buoyancy station 2 may be arranged in the lower part of the power exchange station 1 as shown in fig. 1, so that the battery compartment is built in the water power exchange station 1. Or in an alternative embodiment the buoyancy station 2 may be arranged open to the side of the power plant 1, so that the battery buoyancy tanks are external to the water power plant 1. Both the two modes can facilitate water in inland water areas to enter the buoyancy position 2 to provide buoyancy for the battery buoyancy chamber 3. In alternative embodiments, the buoyancy station 2 may also be located elsewhere in the power exchange station 1, which may provide buoyancy to the battery buoyancy module 3 by the introduction of external water.

As shown in the figures, the buoyancy station 2 may alternatively have an open channel for ingress and egress of the power supply buoyancy module 3. In addition, when the power exchange station 1 is moored in inland water, the water in inland water can diffuse into the buoyancy place 2 and circulate in the open channel, i.e. the buoyancy place 2 can fluctuate with the water in inland water. When the power exchange ship or the water carrier approaches to power exchange, the water waves in the inland water area caused by the power exchange ship or the water carrier can be discharged through the open channel to keep the stability of the power exchange station 1, and the fluctuation of the power exchange station 1 can be matched with the draft of the power exchange ship or the water carrier when the open channel circulates, so that the battery floating cabin 3 is convenient to connect.

As can be seen in fig. 1, the buoyancy station 2 is provided with a bottom plate which can limit the lowest position of the battery buoyancy module 3 stored in the buoyancy station 2, thereby maintaining the stability of the battery buoyancy module 3. In an alternative embodiment, the bottom of the buoyancy station 2 may be in an open structure, and when the power exchange station 1 is moored in inland water, the battery buoyancy module 3 floats on the water surface at the buoyancy station 2 at any time, so that the buoyancy assistance of the water to the battery buoyancy module 3 can be directly utilized to facilitate connection.

In different embodiments, according to the situation of the site, an open channel and an open bottom can be arranged at the buoyancy position 2 at the same time, so that water in inland water areas can conveniently enter the buoyancy position 2 to provide buoyancy for the battery buoyancy cabin 3.

According to the embodiment of fig. 1, the power exchange station 1 may optionally also be provided with buoyancy adjustment means 8, which may for example be symmetrically arranged on the left and right sides of the buoyancy station. The buoyancy adjusting device 8 can adjust the draft of the buoyancy position 2, and is matched with the influence possibly caused by a large number of battery buoyancy tanks 3 on the draft of the buoyancy position 2, and compensation is performed when the draft deviates from a normal water level. The buoyancy adjusting means 8 may be adjusted in such a way that, but not limited to, the draft of the buoyancy bit 2 is adjusted by water intake and drainage.

In an alternative embodiment, the buoyancy adjusting device 8 may include, but is not limited to, a pressurized water tank, the adjusting weight of which may be greater than the weight of the buoyancy station 2 full of the battery buoyancy tank 3, so that the pressurized water tank may adjust the buoyancy of the power exchange station 1 by entering or discharging external water to adjust the draft of the buoyancy station 2, thereby facilitating the docking of the battery buoyancy tank 3.

Further, in order to cooperate with the replacement of the electric ship or the water vehicle, the buoyancy adjusting device 8 adjusts the draft of the buoyancy position 2 so as to adjust the draft of the battery buoyancy chamber 3 stored at the buoyancy position 2, thereby facilitating the replacement of the battery buoyancy chamber 3 by the electric ship or the water vehicle from the buoyancy position 2.

Furthermore, the position of the battery buoyancy chamber 3 stored at the buoyancy position 2 can be adjusted to be matched with the position where the battery buoyancy chamber on the power exchange ship or the water carrier is placed, so that the battery buoyancy chamber 3 can translate between the buoyancy position 2 and the battery buoyancy chamber placing position, and the replacement of the battery buoyancy chamber 3 is more convenient.

The buoyancy adjusting devices 8 can be symmetrically arranged at two sides of the buoyancy position 2 as shown in fig. 1, namely, the buoyancy adjusting devices 8 balance and adjust the buoyancy of the power exchange station 1 from two sides so as to adjust the draft of the buoyancy position 2, thereby facilitating the connection of the battery buoyancy chamber 3. In an alternative embodiment, the buoyancy adjusting device 8 may be disposed in the middle of the buoyancy station 2, for example, the buoyancy of the power exchange station 1 may be more conveniently adjusted at the position along the gravity center of the power exchange station 1, so as to adjust the draft of the buoyancy station 2, thereby facilitating connection of the battery buoyancy chamber 3. The buoyancy stations 2 may now be distributed on both sides of the buoyancy adjusting device 8.

According to the embodiment of fig. 1, optionally, the water part of the power exchange station 1 may be additionally provided with a two-layer structure, wherein one layer may be provided with a living/office area 10, and living, office, rest, entertainment and other facilities of staff may be provided at the living/office area 10. A power transformation facility 9 can be installed on the layer, and after the voltage, current, frequency and the like of an external power supply are adjusted by the power transformation facility 9, the power transformation facility is modulated into a power supply capable of charging the power supply buoyancy module 3, and the power supply is introduced into the buoyancy station 2 to charge the power supply buoyancy module 3. As shown in the figure, a charging gun 5 may be connected to the battery pod 3 to charge it.

In an alternative embodiment, the external power source introduced by the power transformation facility 9 may be a mains high voltage ac power source, and by means of the power transformation facility 9 may be modulated into a low voltage dc power source which may be used to charge the buoyancy module. When the buoyancy bit 2 is idle, the power supply of the power transformation facility can be used for power grid energy storage peak shaving power supply.

In another layer of structure added, an operation area 11 can be further arranged, in the operation area 11, a worker can monitor the running condition of the power exchange station 1, control the power exchange station 1 to exchange electricity or monitor the automatic power exchange of the power exchange station 1, and the worker can also perform maintenance and other operations on facilities and equipment of the power exchange station 1. The operation area 11 is arranged in a layer structure close to the buoyancy position 2, so that workers can conveniently and rapidly process the electricity exchanging matters of the electricity exchanging station 1 in a short distance.

In an alternative embodiment, the locations of the power transformation facility 9, the living area 10 and the operation area 11 are not limited, and may be adjusted according to the convenience of actual operation, and may be, but not limited to, adding a driving area, etc. The structure, number and positions of the added station layers are not limited, and can be increased or decreased according to actual requirements.

It should be noted that the model of the above-water power exchange station 1 is not limited, and may be a semi-submersible pontoon in the embodiment of fig. 1, or may be any other model, so long as the buoyancy position 2 of the power exchange station 1 is at least partially located under water when it is moored in an inland water area, so as to provide buoyancy for the battery buoyancy chamber 3, so that the battery buoyancy chamber 3 can be conveniently and quickly connected.

The semi-submersible pontoon is suitable for being moored in inland water areas offshore or near the coast, namely, the semi-submersible pontoon can be conveniently arranged in a plurality of water-borne carrier channel routes in inland water areas, so that the water-borne carrier can conveniently change electricity when passing through the power exchange station 1, and the carrying cost is saved while the continuous sailing of the water-borne carrier is kept, and the sailing timeliness is guaranteed.

Fig. 2 is an enlarged schematic view of a part of the docking station of the embodiment of the water power station in fig. 1.

As can be seen in connection with fig. 1, to receive a vessel or a water carrier, the water vessel 1 is provided with an anchor 4, which anchor 4 is used to temporarily anchor the vessel or water carrier to the vessel 1 in order to facilitate smooth docking of the vessel or water carrier to the cell buoyancy module 3 at the vessel 1.

Further, as can be seen from fig. 2, two adjacent buoyancy stations 2 constitute a docking station 6, which docking station 6 is adapted to receive a vessel or a water carrier. In alternative embodiments, a docking station may be formed from other numbers of buoyancy stations. The power exchange station 1 can be provided with a plurality of connection positions 6, each connection position 6 is provided with an anchoring piece 4, so that a power exchange ship or a water carrier can be anchored at each connection position 6, and the power exchange ship or the water carrier can be conveniently connected with the battery buoyancy chamber 3 at each connection position 6.

Optionally, a limiting device 7 may be provided at the side of each connection location 6, and when the battery buoyancy tanks 3 float at the connection location 6, the limiting device 7 may limit the movable positions of the battery buoyancy tanks 3, prevent the battery buoyancy tanks 3 from being damaged due to collision with each other, and may also separate each connection location 6.

Limiting devices (not shown) can be arranged on the side face of each buoyancy position 2, and when the battery buoyancy tanks 3 float in the buoyancy positions 2, the limiting devices can limit the movable positions of the battery buoyancy tanks 3 and further prevent the battery buoyancy tanks 3 in each connection position from being damaged due to collision.

Alternatively, the limiting device may be a stop lever as shown in fig. 2, a baffle plate or a rope, etc., as long as the movable position of the battery buoyancy module 3 can be limited when the battery buoyancy module floats. In an alternative embodiment, a limiting device may be disposed before and after each buoyancy station 2 and/or each connection station 6, so as to limit the movement range of the battery buoyancy module 3, so that the battery buoyancy module 3 is easier and faster to store or take out.

When the battery buoyancy module 3 is stored in the buoyancy station 2, the battery buoyancy module 3 is detachably attached to the buoyancy station 2. That is, when the electric ship or the water carrier is transported back and stored in the battery buoyancy tank 3, the battery buoyancy tank 3 may be attached at the buoyancy station 2; when the battery buoyancy chamber 3 is taken away from the buoyancy position 2 by the power exchange ship or the mobile carrier, the battery buoyancy chamber 3 can be separated from the buoyancy position 2 and is pulled to the power exchange ship or the water carrier by a worker through the buoyancy of water, or is automatically pulled by the power exchange station 1 in cooperation with the power exchange ship or the water carrier.

In an alternative embodiment, a securing means (not shown) may be provided at the buoyancy station 2, by means of which the battery pod 3 may be detachably attached to the buoyancy station 2. The fixing device is not limited to include an electromagnetic adsorption device, and when the battery buoyancy module is transported back and stored, the electromagnetic adsorption device adsorbs and fixes the battery buoyancy module 3 to the buoyancy position 2; when the battery buoyancy module 3 is removed from the buoyancy station, the electromagnetic adsorption device demagnetizes and breaks away from the adsorption of the battery buoyancy module 3. Alternatively, the securing means may also comprise a quick release hook, rope or the like.

It can also be seen from the embodiment of fig. 2 that the buoyancy station 2 may also be provided with a charging gun 5, which charging gun 5 may be connected to and charge the battery buoyancy chamber 3. The charging gun 5 can be connected with a power transformation device 9 (shown in fig. 1), and a power source which is modulated by the power transformation device 9 and can be used for charging the battery buoyancy chamber 3 is introduced into the buoyancy position 2 to charge the battery buoyancy chamber 3. In a power exchange station 1 provided with a plurality of buoyancy stations 2, each buoyancy station 2 may be provided with a charging gun 5.

The power exchange station 1 can store a large number of battery buoyancy tanks 3 for power exchange by passing water carriers, the water carriers can be stopped at the power exchange station 1, the battery buoyancy tanks 3 full of electricity are conveniently and quickly connected from the buoyancy station 2 through the buoyancy of water, and the battery buoyancy tanks 3 with low electricity are transported back to the buoyancy station 2. Or the battery buoyancy chamber 3 with full electric quantity can be conveniently and rapidly connected at the power exchange station 1 by the power exchange ship by means of buoyancy, the battery buoyancy chamber 3 is transported to the water carrier in inland water, the battery buoyancy chamber 3 with low electric quantity is replaced by the water carrier, and the battery buoyancy chamber 3 with low electric quantity is transported back to the power exchange station 1.

The technical scope of the present invention is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and these changes and modifications should be included in the scope of the present invention.

Claims (10)

1. A water power exchange station, characterized in that the power exchange station (1) is provided with a buoyancy station (2) open to the water surface, the buoyancy station (2) being for docking a battery buoyancy module (3) to be replaced, the battery buoyancy module (3) being detachably attachable to the buoyancy station (2) such that the battery buoyancy module can be floated on the buoyancy station for docking of the battery buoyancy module.

2. A plant as claimed in claim 1, characterized in that the plant (1) is a semi-submersible pontoon.

3. A plant according to claim 1 or 2, characterized in that the buoyancy place (2) is arranged in the lower part of the plant (1) or in the open air laterally of the plant (1).

4. A plant according to claim 1 or 2, characterized in that the plant (1) is provided with a plurality of said buoyancy stations (2), each buoyancy station (2) being provided with a fixture for attaching the battery buoyancy module, and each buoyancy station (2) being provided with a charging gun (5) for charging the battery buoyancy module (3).

5. A plant according to claim 4, characterized in that the fixing means comprise electromagnetic adsorption means for the adsorption fixing of the battery buoyancy module (3) to the buoyancy station (2) when the battery buoyancy module (3) is docked.

6. A station as claimed in claim 1 or2, characterized in that several adjacent buoyancy stations (2) constitute a docking station (6), each docking station (6) being provided with an anchor (4), the docking station (6) being adapted to receive a vessel or a water carrier for docking a battery pod (3) in the buoyancy station (2), the anchor (4) being adapted to temporarily anchor the vessel or the water carrier to the docking station (6).

7. The power exchange station according to claim 6, characterized in that each buoyancy station (2) and/or each connection station (6) is provided with a limiting device (7) on the side, the limiting devices (7) being partitions, bars or blocking ropes.

8. A plant according to claim 1 or 2, characterized in that the buoyancy station (2) has an open channel for the floating ingress and egress of the towed battery buoyancy module (3) into and out of the buoyancy station (2) when the battery buoyancy module is docked; and/or the bottom of the buoyancy position (2) is of an open structure, and when the power exchange station (1) is moored on water, the battery buoyancy cabin (3) floats on the water surface at the buoyancy position (2).

9. A plant according to claim 1 or 2, characterized in that the plant (1) has buoyancy adjustment means (8) for adjusting the draft of the buoyancy station (2), the buoyancy adjustment means (8) being symmetrically arranged in the plant (1); and/or the power exchange station (1) is provided with a power transformation facility (9), wherein the power transformation facility (9) is used for providing a charging power supply for a battery buoyancy cabin (3) positioned in the buoyancy station (2); and/or an operation area is arranged above the buoyancy position (2), and a living area and/or an office area are arranged above the operation area.

10. Method of changing electricity for a water carrier passing the station using a water station (1) according to any of the preceding claims 1 to 9, characterized in that the station (1) is used to directly dock a battery buoyancy module (3) to the water carrier or a station is used to dock a battery buoyancy module (3) from the station and then the station is used to change electricity to the water carrier.