WO2021068534A1 - 储能装置、储能系统、储能方法及风力发电机组 - Google Patents

储能装置、储能系统、储能方法及风力发电机组 Download PDF

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Publication number
WO2021068534A1
WO2021068534A1 PCT/CN2020/094188 CN2020094188W WO2021068534A1 WO 2021068534 A1 WO2021068534 A1 WO 2021068534A1 CN 2020094188 W CN2020094188 W CN 2020094188W WO 2021068534 A1 WO2021068534 A1 WO 2021068534A1
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WIPO (PCT)
Prior art keywords
energy storage
storage device
wall
heat
sub
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PCT/CN2020/094188
Other languages
English (en)
French (fr)
Inventor
拜亮
刘岩
张才盛
许可歆
王�锋
Original Assignee
新疆金风科技股份有限公司
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Application filed by 新疆金风科技股份有限公司 filed Critical 新疆金风科技股份有限公司
Priority to ES20875221T priority Critical patent/ES2954441T3/es
Priority to AU2020363503A priority patent/AU2020363503B2/en
Priority to EP20875221.2A priority patent/EP4030053B1/en
Priority to CA3154423A priority patent/CA3154423A1/en
Publication of WO2021068534A1 publication Critical patent/WO2021068534A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/18—Combinations of wind motors with apparatus storing energy storing heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
    • F24H7/0216—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • F28D7/087—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions assembled in arrays, each array being arranged in the same plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/50—Energy storage in industry with an added climate change mitigation effect

Definitions

  • This application relates to the technical field of energy storage, and in particular to an energy storage device, an energy storage system, an energy storage method, and a wind power generator.
  • Wind power generators convert wind energy into electrical energy through a series of electrical equipment such as generators, converters, and transformers.
  • Wind turbines include a large number of components such as motors, electrical systems, lubrication systems, and hydraulic systems. While these components serve to generate electricity, they also consume electricity.
  • the above-mentioned electrical equipment needs to adjust the power generated in real time to meet the requirements of unit life and grid standards.
  • the purpose of this application is to provide an energy storage device, an energy storage system, an energy storage method, and a wind power generator set, which can quickly consume additional energy from an external energy device and store it in the form of thermal energy.
  • the present application also proposes an energy storage device, which includes: a housing having a housing cavity formed by a wall; a heat storage member disposed in the housing cavity, and the heat storage member includes an energy storage body and a conductive member, and The energy body is provided with a plurality of heat transfer holes penetrating through itself in a first direction, the conductive member is accommodated in the plurality of heat transfer holes, and one end of the conductive member protrudes from the wall to be electrically connected with an external energy device.
  • the energy storage body is a rectangular parallelepiped structure made of magnesium or an alloy containing magnesium.
  • the energy storage body includes a plurality of sub-energy storage modules spliced with each other, and each sub-energy storage module is provided with a heat transfer channel passing through itself in a first direction.
  • the energy storage body includes a plurality of sub-energy storage modules spliced with each other, each sub-energy storage module is a rectangular parallelepiped structure, and at least two adjacent sub-energy storage modules are formed with a transmission extending in a first direction. Hot hole.
  • each sub-energy storage module includes a first prefabricated groove penetrating through itself along a first direction, the first prefabricated groove is located at four corners of the sub-energy storage module, and the four adjacent sub-energy storage modules The first prefabricated grooves together form a heat transfer channel.
  • each sub-energy storage module further includes a second prefabricated groove penetrating through itself along the first direction, the second prefabricated groove is located on at least two surfaces of the sub-energy storage module, and two adjacent sub-energy storage modules The second prefabricated grooves of the modules jointly form heat transfer channels.
  • the conductive member is the entire resistance wire continuously contained in the plurality of heat transfer holes.
  • the conductive member is a plurality of resistance wires or a plurality of electric heating rods accommodated in a plurality of heat transfer channels, and the plurality of resistance wires or the plurality of electric heating rods are connected in sequence from end to end.
  • the energy storage body is further provided with a ventilation channel penetrating itself in a second direction, the ventilation channel and the heat transfer channel are arranged separately from each other, and the second direction and the first direction are arranged to intersect.
  • the energy storage device further includes a heat dissipation fan
  • the wall of the housing includes a first wall and a second wall disposed opposite to each other in a second direction, the first wall is provided with an air outlet, and the air outlet is provided with an external
  • the heat dissipation fan is arranged on the second wall and corresponding to the ventilation duct.
  • a self-hanging ventilation curtain is provided at the air outlet of the housing.
  • the wall of the housing further includes a third wall and a fourth wall that are arranged opposite to each other along the first direction, one end of the conductive member protrudes from the third wall, and a gap between the energy storage body and the third wall A predetermined gap is respectively maintained between the energy storage body and the fourth wall.
  • the outer surface of the housing is provided with a heat insulation layer.
  • the heat storage member further includes a base supporting the energy storage body, and the heat storage member fixes the energy storage body and the base into one body through a compression device, and is fixed to the wall of the shell.
  • the pressing device includes a pressing cover and a fastener provided on the pressing cover, the pressing cover is press-fitted to the energy storage body, and the fastener is fixedly connected to the wall of the housing.
  • the energy storage device further includes a temperature monitoring device and a controller electrically connected to the temperature monitoring device, and the temperature monitoring device is arranged in the housing or the energy storage body.
  • this application also provides an energy storage system, which is applied to a wind turbine generator set.
  • the energy storage system includes: a converter, which is electrically connected to the generator and transformer of the wind turbine generator; and the energy storage device as described above , The conductive part of the energy storage device is electrically connected to the converter.
  • this application also provides an energy storage method applied to the energy storage system as described above.
  • the energy storage method includes: determining whether the converter needs additional power consumption; if so, controlling The converter activates the switch between the conduction member and the converter to electrically connect the energy storage device with the converter; if not, the controller closes the switch between the conduction member and the converter, so that the energy storage device is connected to the converter. The converter remains offline.
  • the energy storage method further includes: obtaining the temperature of the energy storage device, and The temperature is compared with the allowable temperature threshold of the energy storage device: if the temperature is greater than the allowable temperature threshold, the controller starts the cooling fan of the energy storage device.
  • this application also provides a wind power generating set including the energy storage system as described above.
  • An energy storage device, an energy storage system, an energy storage method, and a wind turbine generator use a heat storage member arranged in a shell to quickly consume the extra energy of an external energy device and store it in the form of thermal energy, and Simple structure, energy saving and environmental protection. Applying the energy storage device to a wind power generating set can effectively save and utilize energy, reduce the self-consumption of the wind power generating set, and is beneficial to regulating the power generation of the wind power generating set.
  • FIG. 1 is a schematic structural diagram of an energy storage device provided by an embodiment of the present application.
  • FIG. 2 is a schematic cross-sectional structure diagram of the energy storage device shown in FIG. 1;
  • Fig. 3 is a schematic structural diagram of a heat storage component of the energy storage device shown in Fig. 1;
  • FIG. 4 is a schematic structural diagram of a sub-heat storage module of the heat storage member shown in FIG. 3;
  • Fig. 5 is a schematic structural view of the heat storage body of the heat storage component shown in Fig. 3 along an angle;
  • Fig. 6 is a schematic structural view of the heat storage body of the heat storage member shown in Fig. 3 from another angle;
  • Fig. 7 is a structural block diagram of an energy storage system for a wind turbine generator provided by an embodiment of the present application.
  • Fig. 8 is a flowchart of a method for energy storage of a wind turbine generator provided by an embodiment of the present application.
  • 1-energy storage device 2-converter; 3-generator; 4-transformer; X-first direction; Y-second direction;
  • 20-Heat storage component 21-Energy storage body; 21a-Sub energy storage module; 211a-First prefabricated groove; 211b-Second prefabricated groove; 211-Heat transfer duct; 22-Conductor; 212-Ventilation duct; 23 -Base; 24-compression device; 241-gland; 24-fastener; 25-switch;
  • the present application provides an energy storage device 1, which includes a housing 10 and a heat storage member 20.
  • the housing 10 has an accommodation space 10a formed by a wall, and the heat storage member 20 is disposed in the accommodation space 10a.
  • the heat storage member 20 includes an energy storage body 21 and a conductive member 22.
  • the energy storage body 21 is provided with a penetrating through itself along the first direction X.
  • the conductive member 22 is accommodated in the plurality of heat transfer channels 211, and one end of the conductive member 22 protrudes from the wall to be electrically connected to an external energy device.
  • the energy storage body 21 is an integral rectangular parallelepiped structural member
  • the conductive member 22 may be a conductive material capable of converting electricity into heat, such as a resistance wire or an electric heating rod, for heating the energy storage body 21.
  • the conductive member 22 is the entire resistance wire continuously accommodated in the plurality of heat transfer holes 211. As shown in FIG. 3, the entire resistance wire is wound back and forth in each heat transfer hole 211 so as to be arranged in a narrow space. Place a longer resistance wire.
  • the conductive member 22 is a plurality of resistance wires or a plurality of electric heating rods accommodated in the plurality of heat transfer holes 211, and the plurality of resistance wires or the plurality of electric heating rods are connected in turn.
  • the outer diameter of the conductive member 22 is slightly smaller than the inner diameter of the heat transfer hole 211, which facilitates the installation of the conductive member 22 in the heat transfer hole 211.
  • the external energy device can be, for example, a converter of a wind turbine.
  • One end of the conductive member 22 extends from the wall and is electrically connected to the converter, and the other end is connected to the energy storage body 21.
  • the conductive member 22 can generate The effect of heat generation can quickly consume the excess electrical energy of the converter and store the excess electrical energy in the energy storage body 21 in the form of thermal energy. This can not only reduce the impact of the peak voltage of the external energy device on the electrical components, but also effectively Save and use energy.
  • the energy storage device provided in the present application quickly consumes the extra energy of the external energy device through the heat storage member arranged in the shell, and stores it in the form of thermal energy, and has a simple structure, energy saving and environmental protection.
  • the energy storage body 21 of the heat storage member 20 may be a rectangular parallelepiped structure made of magnesium or an alloy containing magnesium, which has high specific heat and high temperature resistance, and its heat storage temperature is the highest The temperature can reach 800°C, and the density is only about 1/3 of that of steel, and it is easy to process.
  • the energy storage device When the energy stored by the energy storage device exceeds its own carrying capacity, for example, when the temperature of the energy storage body 21 exceeds the maximum allowable temperature of 800° C., the energy storage device needs to be dissipated in time.
  • the energy storage body 21 is further provided with a ventilation passage 212 penetrating itself along the second direction Y, the second direction Y intersects the first direction X, and the ventilation passage 212 and the heat transfer hole 211 are arranged separately from each other to avoid heat
  • the airflow short-circuit phenomenon occurs during the exchange process, which improves the heat dissipation effect of the energy storage device.
  • the second direction Y and the first direction X are perpendicular to each other, which facilitates the processing of the energy storage body 21.
  • the energy storage device provided in the present application further includes a heat dissipation fan 30.
  • the wall of the housing 10 includes a first wall 11 and a second wall 12 that are arranged opposite to each other along the second direction Y.
  • the wall 11 is provided with an air outlet 111
  • the air outlet 111 is provided with a pipeline communicating with external equipment
  • the heat dissipation fan 30 is provided on the second wall 12 and is provided corresponding to the air passage 212.
  • the heat dissipation fan 30 is arranged opposite to the air outlet 111, which can avoid the turning of the air flow channel and improve the heat dissipation effect.
  • the cooling fan 30 includes a motor and blades connected to the motor.
  • the blades can introduce cold air from the outside into the energy storage body 21 through the ventilation duct 212, so as to quickly and timely cool the energy storage body 21 with excessive temperature and dissipate heat to prevent energy storage.
  • the main body 21 is damaged by cracks and the like due to overheating.
  • the ventilation duct 212 and the heat transfer duct 211 are separated from each other, the outside cold air will not directly contact the conductive member 22, which prevents the conductive member 22, such as a resistance wire, from accelerating oxidation, which is beneficial to prolong the service life of the conductive member 22.
  • the air outlet 111 is provided with a pipeline communicating with external equipment.
  • the external equipment can be, for example, an electric control cabinet that needs to dehumidify a wind turbine, a hydraulic station that needs to heat hydraulic oil in winter, and a device that needs to heat lubricating oil.
  • the consumed energy can be further stored in the form of thermal energy and released when needed to complete the dehumidification of the electric control cabinet and increase the temperature of the cabin in winter, etc., to achieve the purpose of reducing the self-consumption of the wind turbine.
  • a self-hanging ventilation curtain is provided at the air outlet 111 of the housing 10, and a commonly used self-hanging ventilation curtain may be a shutter to form a normally closed channel.
  • the cooling fan 30 and the self-hanging ventilation curtain at the air outlet 111 are closed to reduce the heat exchange between the energy storage body 21 and the outside as much as possible. If excess heat energy needs to be consumed, it can be connected to external equipment through the pipeline at the air outlet 111.
  • the self-hanging ventilation curtain of the air outlet 111 can be opened, and the heat dissipation fan 30 can dissipate heat in time to improve the flexibility of temperature adjustment of the energy storage device.
  • the energy storage body 21 includes a plurality of sub-energy storage modules 21a spliced with each other. Further optionally, each sub-energy storage module 21a is a rectangular parallelepiped structure.
  • each sub-energy storage module 21a is provided with a heat transfer channel 211 passing through itself along the first direction X.
  • the conductive member 22 is the entire resistance wire, the entire resistance wire is wound back and forth in the heat transfer channels 211 of each sub-energy storage module 21a.
  • the conductive member 22 is a plurality of resistance wires or a plurality of electric heating rods, the plurality of resistance wires or the plurality of electric heating rods are sequentially connected end to end and accommodated in the heat transfer channels 211 of the plurality of sub-energy storage modules 21a.
  • a heat transfer channel 211 extending along the first direction X is formed between at least two adjacent sub-energy storage modules 21a.
  • the conductive member 22 is the entire resistance wire
  • the entire resistance wire is wound back and forth in the multiple heat transfer holes 211 formed between the sub-energy storage modules 21a.
  • the conductive member 22 is a plurality of resistance wires or a plurality of electric heating rods
  • the plurality of resistance wires or the plurality of electric heating rods are sequentially connected end to end in the plurality of heat transfer channels 211 formed between the plurality of sub-energy storage modules 21a .
  • each sub-energy storage module 21a includes a first prefabricated groove 211a penetrating through itself along the first direction X, the first prefabricated groove 211a is located at each corner of the sub-energy storage module 21a, and each adjacent sub-energy storage module The first prefabricated grooves 211a of 21a jointly form a heat transfer channel 211.
  • the sub-energy storage module 21a is a rectangular parallelepiped structure, the first prefabricated grooves 211a are located at the four corners of the sub-energy storage module 21a, and the first prefabricated grooves 211a of the four adjacent sub-energy storage modules 21a are jointly formed Heat transfer tunnel 211.
  • each sub-energy storage module 21a includes a second prefabricated groove 211b penetrating through itself along the first direction X, the second prefabricated groove 211b is located on the surface of the sub-energy storage module 21a, and two adjacent sub-energy storage modules 21a The second prefabricated grooves 211b together form a heat transfer channel 211.
  • the sub-energy storage module 21a is a rectangular parallelepiped structure
  • the second prefabricated grooves 211b are located on at least two surfaces of the sub-energy storage module 21a, and the second prefabricated grooves 211b of two adjacent sub-energy storage modules 21a Together, heat transfer channels 211 are formed.
  • each sub-energy storage module 21a is provided with first pre-grooves 211a at multiple corners, and each sub-energy storage module 21a is provided with second pre-grooves 211b on multiple surfaces.
  • more heat transfer holes 211 can be formed between the multiple sub-energy storage modules 21a that are spliced with each other, which increases the distribution density of the conductive element 22 in the energy storage body 21, thereby improving the thermal conductivity of the heat storage member 20. effectiveness.
  • each sub-energy storage module 21a further includes a ventilation channel 212 penetrating through itself along the second direction Y, and the ventilation channel 212 is separated from the first prefabricated groove 211a and the second prefabricated groove 211b.
  • the energy storage body 21 includes 48 sub-energy storage modules 21a spliced with each other.
  • Each sub-energy storage module 21a is a rectangular parallelepiped structure.
  • the 48 sub-energy storage modules 21a are spliced into 4 layers, each layer has 3 layers.
  • the cubic structure of the sub-energy storage modules 21a in rows and 4 columns, each sub-energy storage module 21a is provided with a first prefabricated groove 211a penetrating through itself along the first direction X at the four corners, and the first prefabricated sub-module 21a of the 48 sub-energy storage modules 21a
  • the groove 211a forms a total of 6 heat transfer channels 211.
  • each sub-energy storage module 21a is respectively provided with a second prefabricated groove 211b penetrating through itself along the first direction X, and the second prefabricated grooves 211b of the 48 sub-energy storage modules 21a form a total of 9 heat transfer channels. 211.
  • the entire conductive member 22 is wound back and forth in the 15 heat transfer channels 211 formed by the first prefabricated groove 211a and the second prefabricated groove 211b.
  • each sub-energy storage module 21a further includes two ventilation passages 212 penetrating through itself along the second direction Y.
  • the two ventilation passages 212 are arranged separately from the first prefabricated groove 211a and the second prefabricated groove 211b, and 48 sub-energy storage modules A total of 32 ventilation passages 212 are formed in the module 21a.
  • the plurality of sub-energy storage modules 21a have a cubic shape after being joined to each other, so that a plurality of first prefabricated grooves 211a and a plurality of second prefabricated grooves 211b can be joined to form a plurality of heat transfer channels 211 of the energy storage body 21 to The conductive member 22 is accommodated.
  • the cooling fan 30 is arranged corresponding to the two ends of the plurality of ventilation channels 212 to improve the heat dissipation effect of the energy storage device.
  • the modularly designed multiple sub-energy storage modules 21a can be arbitrarily spliced into energy storage bodies 21 of different sizes and volumes according to use requirements.
  • the number of sub-energy storage modules 21a or the total volume of a single energy storage body 21 is combined with the total length of the conductive member 22.
  • the length of the conductive element 22 is directly proportional to the power consumption capacity.
  • more sub-energy storage modules 21a means more heat can be stored, and expansion is convenient, which improves the versatility and flexibility of the sub-energy storage modules 21a, and satisfies Wind farm-level energy storage requirements also facilitate inventory management.
  • the heat storage member 20 also includes a base 23 that supports the energy storage body 21.
  • the base 23 mainly functions as insulation and heat insulation.
  • the material of the base 23 can be, for example, plastic such as high temperature resistant nylon, or a metal plate wrapped with nylon, etc. Temperature resistant layer.
  • the heat storage member 20 fixes the energy storage body 21 and the base 23 into a whole through the pressing device 24, and is fixed to the wall of the housing 10 to prevent the heat storage member 20 from moving in the housing 10 due to bumps or vibrations, and then hitting Injury energy storage body 21.
  • the pressing device 24 includes a pressing cover 241 and a fastener 242 arranged on the pressing cover 241, the pressing cover 241 is pressed against the energy storage body 21, and the fastener is fixedly connected to the wall of the housing 10.
  • the fastener 242 may be a bolt with an external thread.
  • the wall of the housing 10 is provided with an internal threaded hole, and the pressing device 24 realizes the connection between the housing 10 and the internal threaded hole of the wall by the threaded connection between the fastener 242 and the wall.
  • the distance between the heat storage members 20 is adjustable, so that the heat storage member 20 is compressed or loosened.
  • the wall of the housing 10 further includes a third wall 13 and a fourth wall 14 oppositely arranged along the first direction X, one end of the conductive member 22 protrudes from the third wall 13, and the energy storage body 21 and the third wall A predetermined gap is maintained between 13 and the fourth wall 14.
  • the predetermined gap may be 200 mm, for example, to allow the air flow inside the housing 10 to prevent the conduction member 22 from malfunctioning and the housing 10 to be energized.
  • the material of the housing 10 is preferably a metal material, which has a certain structural strength.
  • the outer surface of the housing 10 is provided with a heat insulation layer to minimize the heat transfer between the inside and the outside of the housing 10.
  • the material of the heat insulation layer is usually non-metallic foam, which can also have an insulating effect.
  • the energy storage device 1 further includes a temperature monitoring device (not shown in the figure) and a controller (not shown in the figure) electrically connected to the temperature monitoring device.
  • the temperature monitoring device can be arranged in the housing 10 or the energy storage body. In 21, the temperature of the energy storage body 21 is monitored in real time, and the cooling fan 30 is activated or deactivated by the controller according to the monitored temperature to realize automatic control.
  • a switch 25 is provided between the conductive member 22 of the heat storage member 20 and the external energy device.
  • the switch 25 can cut off the transmission of electric energy through the controller, and generate heat only when necessary, so as to Whether the external energy device needs additional power consumption to control the startup and shutdown of the energy storage device 1.
  • this application also provides an energy storage system applied to a wind turbine.
  • the energy storage system includes any one of the energy storage device 1 and the converter 2 as described above, and the energy storage device 1 conducts
  • the piece 22 is electrically connected to the converter 2.
  • the converter 2 plays an important role in the operation of the wind generator set.
  • the power generation voltage of the generator 3 will fluctuate, and the voltage fluctuation may cause damage to the surge protector and other components on the generator 3.
  • the energy storage device 1 is placed near a power element of the converter 2, and the power element is, for example, a rectifier and/or an inverter.
  • the power element is, for example, a rectifier and/or an inverter.
  • One end of the conductive member 22 of the energy storage device 1 protrudes from the wall and is electrically connected to the converter 2, and the other end is connected to the energy storage body 21, which can quickly consume the excess electric energy of the converter and dissipate the excess electric energy in the form of thermal energy.
  • Stored in the energy storage body 21 can not only reduce the impact of voltage peaks on the surge protector and other components, but also effectively save energy, which is beneficial to regulating the power generation of the wind turbine.
  • the energy storage system provided by the present application adopts any of the energy storage devices 1 described above, which can effectively save and utilize energy, reduce the self-consumption of wind turbines, and is beneficial to regulating the power generation of wind turbines. power.
  • this application also provides a wind power generating set including the energy storage system as described above.
  • this application also provides an energy storage method applied to the energy storage system as described above.
  • the energy storage method mainly includes two control parts: energy storage as a heat part and a heat consumption part.
  • the energy storage method includes:
  • Step S1 Determine whether the converter 2 needs additional power consumption. This information can be obtained from the control system of the wind turbine generator set itself, whether the converter 2 needs additional power consumption, for example, the generating voltage of the generator 3 is too high due to a sudden change in wind conditions, or when the wind turbine generator sets perform low voltage ride through Need to consume a lot of useless power and so on.
  • Step S21 If yes, the switch 25 between the conductive member 22 and the converter 2 is activated by the controller, so that the energy storage device 1 and the converter 2 are electrically connected.
  • the energy storage device 1 is connected as an electric device for power consumption.
  • Step S22 If not, the switch 25 between the conductive member 22 and the converter 2 is closed by the controller to keep the energy storage device 1 and the converter 2 offline.
  • the energy storage device 1 remains offline and does not have a connection relationship with the power generation system of the wind turbine generator.
  • the energy storage method further includes:
  • Step S3 Obtain the temperature of the energy storage device 1, and compare the temperature with the allowable temperature threshold of the energy storage device 1:
  • Step S4 If the temperature is greater than the allowable temperature threshold, the controller starts the cooling fan 30 of the energy storage device 1.
  • the stored heat If the temperature is not greater than the allowable temperature threshold, you can use the stored heat according to actual needs, such as whether you need to use the stored heat, for example, reserve the electricity at night when the power demand of the grid is low as heat, to provide heating for residents in winter, or for nearby factories.
  • the heating production process provides services.
  • the energy storage method of the energy storage system provided by this application can quickly consume the energy generated by the converter 2 through the energy storage device 1 when the additional energy generated by the converter 2 needs to be consumed, and at the same time, the energy consumed can be Store it and use it as heat when needed, effectively saving and using energy.

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  • Sustainable Energy (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Wind Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

一种储能装置（1）、储能系统、储能方法及风力发电机组，该储能装置包括：壳体（10），具有由壁部形成的容纳腔（10a）；储热构件（20），设置于容纳腔，储热构件包括储能本体（21）和设置于储能本体内的传导件（22），储能本体设置有沿第一方向贯穿自身的多个传热孔道（211），传导件容纳于多个传热孔道内，且传导件的一端从壁部伸出，以与外部能量装置电连接。通过设置于壳体内的储热构件来快速消耗外部能量装置的额外能量，并以热能的方式进行存储，有效地节约、利用能量，降低了风力发电机组的自耗电，有利于调节风力发电机组的发电功率。

Description

储能装置、储能系统、储能方法及风力发电机组
相关申请的交叉引用
本申请要求享有于2019年10月12日提交的名称为“储能装置、风力发电机组的储能系统及储能方法”的中国专利申请201910969885.9的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及储能技术领域，具体涉及一种储能装置、储能系统、储能方法及风力发电机组。
背景技术
风力发电机组将风能转化为电能是通过发电机、变流器、变压器等一系列的电气设备完成的。风力发电机组包括例如电机、电气系统、润滑系统、液压系统等大量零部件，这些零部件在服务于发电的同时，自身也会消耗电能。
由于大自然的风是变化的，风机在正常工作时，风况的这种不确定性使得发电机发电的电压波动，电压波动可能导致发电机上的浪涌保护器以及其它零部件受到损伤。因此，上述这些电气设备需要实时调节发电的功率，以满足机组寿命及电网标准的要求。
发明内容
本申请的目的是提供一种储能装置、储能系统、储能方法及风力发电机组，该储能装置能够快速消耗外部能量装置的额外能量，并以热能的方式进行存储。
一方面，本申请还提出了一种储能装置，其包括：壳体，具有由壁部形成的容纳腔；储热构件，设置于容纳腔，储热构件包括储能本体和传导 件，储能本体设置有沿第一方向贯穿自身的多个传热孔道，传导件容纳于多个传热孔道内，且传导件的一端从壁部伸出，以与外部能量装置电连接。
根据本申请的一个方面，储能本体为由镁或者包含镁的合金制成的长方体结构件。
根据本申请的一个方面，储能本体包括相互拼接的多个子储能模块，每个子储能模块设置有沿第一方向贯穿自身的传热孔道。
根据本申请的一个方面，储能本体包括相互拼接的多个子储能模块，每个子储能模块为长方体结构件，相邻的至少两个子储能模块之间形成有沿第一方向延伸的传热孔道。
根据本申请的一个方面，每个子储能模块包括沿第一方向贯穿自身的第一预制槽，第一预制槽位于子储能模块的四个角处，且相邻的四个子储能模块的第一预制槽共同形成传热孔道。
根据本申请的一个方面，每个子储能模块还包括沿第一方向贯穿自身的第二预制槽，第二预制槽位于子储能模块的至少两个表面上，且相邻的两个子储能模块的第二预制槽共同形成传热孔道。
根据本申请的一个方面，传导件为连续地容纳于多个所述传热孔道内的整个电阻丝。
根据本申请的一个方面，传导件为容纳于多个传热孔道内的多个电阻丝或者多个电加热棒，且多个电阻丝或者多个电加热棒的首尾依次连接。
根据本申请的一个方面，储能本体还设置有沿第二方向贯穿自身的通风道，通风道与传热孔道相互隔离设置，第二方向与第一方向相交设置。
根据本申请的一个方面，储能装置还包括散热风扇，壳体的壁部包括沿第二方向相对设置的第一壁和第二壁，第一壁设置有出风口，出风口设置有与外部设备连通的管路，散热风扇设置于第二壁，且对应于通风道设置。
根据本申请的一个方面，壳体的所述出风口处设置有自垂式通风帘。
根据本申请的一个方面，壳体的壁部还包括沿第一方向相对设置的第三壁和第四壁，传导件的一端从第三壁伸出，储能本体与第三壁之间以及储能本体与第四壁之间分别保持预定间隙。
根据本申请的一个方面，壳体的外表面设置有隔热层。
根据本申请的一个方面，储热构件还包括支撑储能本体的底座，储热构件通过压紧装置将储能本体和底座固连为一体，并固定于壳体的壁部。
根据本申请的一个方面，压紧装置包括压盖和设置于压盖上的紧固件，压盖压合于储能本体，紧固件与壳体的壁部固定连接。
根据本申请的一个方面，储能装置还包括温度监测装置和与温度监测装置电连接的控制器，温度监测装置设置于壳体内或者储能本体内。
另一方面，本申请还提供了一种储能系统，应用于风力发电机组，储能系统包括：变流器，与风力发电机组的发电机和变压器电连接；如前所述的储能装置，储能装置的传导件与变流器电连接。
另一方面，本申请还提供了一种应用于如前所述的储能系统的储能方法，该储能方法包括：确定变流器是否需要进行额外的功率消耗；如果是，则通过控制器启动传导件与变流器之间的开关，以使储能装置与变流器电连接；如果否，则通过控制器关闭传导件与变流器之间的开关，以使储能装置与变流器保持离线。
根据本申请的一个方面，通过控制器启动传导件与变流器之间的开关，以使储能装置与变流器电连接之后，该储能方法还包括：获取储能装置的温度，并将该温度与储能装置的允许温度阈值进行比较：如果该温度大于允许温度阈值，则通过控制器启动储能装置的散热风扇。
另一方面，本申请还提供了一种风力发电机组，包括如前所述的储能系统。
本申请提供的一种储能装置、储能系统、储能方法及风力发电机组，通过设置于壳体内的储热构件来快速消耗外部能量装置的额外能量，并以热能的方式进行存储，且结构简单、节能环保。将该储能装置应用于风力发电机组，可以有效地节约、利用能量，降低了风力发电机组的自耗电，有利于调节风力发电机组的发电功率。
附图说明
从下面结合附图对本申请的具体实施方式的描述中可以更好地理解本申请，其中，通过阅读以下参照附图对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更明显，相同或相似的附图标记表示相同或相似的特征。
图1是本申请实施例提供的一种储能装置的结构示意图；
图2是图1所示的储能装置的剖视结构示意图；
图3是图1所示的储能装置的储热构件的结构示意图；
图4是图3所示的储热构件的子储热模块的结构示意图；
图5是图3所示的储热构件的储热本体沿一个角度的结构示意图；
图6是图3所示的储热构件的储热本体沿另一个角度的结构示意图；
图7是本申请实施例提供的一种风力发电机组的储能系统的结构框图；
图8是本申请实施例提供的一种风力发电机组的储能方法的流程框图。
附图标记说明：
1-储能装置；2-变流器；3-发电机；4-变压器；X-第一方向；Y-第二方向；
10-壳体；10a-容纳腔；11-第一壁；111-出风口；12-第二壁；13-第三壁；14-第四壁；
20-储热构件；21-储能本体；21a-子储能模块；211a-第一预制槽；211b-第二预制槽；211-传热孔道；22-传导件；212-通风道；23-底座；24-压紧装置；241-压盖；242-紧固件；25-开关；
30-散热风扇。
具体实施方式
下面将详细描述本申请的各个方面的特征和示例性实施例。下面的详细描述中公开了许多具体细节，以便全面理解本申请。但是，对于本领域技术人员来说，很明显的是，本申请可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过示出本申请的示例来提供对本申请的更好的理解。本申请决不限于下面所提出的任何具体配置和算法，而是在不脱离本申请的精神的前提下覆盖了元素、部件和算 法的任何修改、替换和改进。在附图和下面的描述中，没有示出公知的结构和技术，以便避免对本申请造成不必要的模糊。
为了更好地理解本申请，下面结合图1至图8对本申请实施例提供的储能装置、储能系统及储能方法进行详细描述。
请一并参阅图1至图3，本申请提供了一种储能装置1，其包括壳体10和储热构件20。
壳体10具有由壁部形成的容纳空间10a，储热构件20设置于容纳空间10a，储热构件20包括储能本体21和传导件22，储能本体21设置有沿第一方向X贯穿自身的多个传热孔道211，传导件22容纳于多个传热孔道211内，传导件22的一端从壁部伸出，以与外部能量装置电连接。
可选地，储能本体21为整体的长方体结构件，传导件22可以为电阻丝或者电加热棒等能够将电转化成热能的传导材质，用于加热储能本体21。
可选地，传导件22为连续地容纳于多个传热孔道211的整个电阻丝，如图3所示，整个电阻丝在各个传热孔道211内来回缠绕设置，以便于在狭小的空间内放置较长的电阻丝。可选地，传导件22为容纳于多个传热孔道211内的多个电阻丝或者多个电加热棒，且多个电阻丝或者多个电加热棒的首尾依次连接。另外，传导件22的外径略小于传热孔道211的内径，便于将传导件22安装于传热孔道211。
外部能量装置例如可以为风力发电机组的变流器，传导件22的一端从壁部伸出与变流器电连接，另一端与储能本体21连接，当通过电流时，传导件22可以产生发热的效果，从而可以快速消耗变流器的过量电能，并以热能的方式将过量电能存储在储能本体21内，既可以减少外部能量装置的电压峰值对电气元件的影响，也能够有效地节约、利用能量。
本申请提供的储能装置，通过设置于壳体内的储热构件来快速消耗外部能量装置的额外能量，并以热能的方式进行存储，且结构简单、节能环保。
请再次参阅图1至图3，储热构件20的储能本体21可以为由镁或者包含镁的合金制成的长方体结构件，比热高、耐温高，其耐受的蓄热温度最高可达800℃，而密度只有钢材的约1/3，并且便于加工。
当储能装置储存的能量超过自身的承载能力，例如储能本体21的温度超过允许的最高温度800℃时，需要及时对储能装置进行散热。
具体地，储能本体21还设置有沿第二方向Y贯穿自身的通风道212，第二方向Y与第一方向X相交设置，通风道212与传热孔道211相互隔离设置，以避免在热交换的过程中出现气流短路现象，提高储能装置的散热效果。优选地，第二方向Y与第一方向X相互垂直，便于加工储能本体21。
为了进一步提高储能装置的散热效果，本申请提供的储能装置还包括散热风扇30，壳体10的壁部包括沿第二方向Y相对设置的第一壁11和第二壁12，第一壁11设置有出风口111，出风口111设置有与外部设备连通的管路，散热风扇30设置于第二壁12，且对应于通风道212设置。散热风扇30与出风口111相对设置，可以避免空气流动通道的转折，提高散热效果。
散热风扇30包括电机及与电机连接的叶片，通过叶片可以将外界的冷空气通过通风道212引入储能本体21，以快速及时地对温度过高的储能本体21进行降温散热，防止储能本体21因过热产生裂纹等损伤。并且由于通风道212与传热孔道211相互隔离设置，外界冷空气不会直接接触传导件22，避免传导件22例如电阻丝加速氧化，有利于延长传导件22的使用寿命。
另外，出风口111设置有与外部设备连通的管路，外部设备例如可以为风力发电机组需要除湿的电控柜、在冬季需要加热液压油的液压站以及需要加热润滑油的设备，从而对于快速消耗掉的能量，可以进一步以热能的形式存储，并且在需要的时候释放以完成例如电控柜除湿，冬季机舱温度提升等，达到降低风力发电机组的自耗电的目的。
进一步地，壳体10的出风口111处设置有自垂式通风帘，常用的自垂式通风帘可以为百叶窗，以形成常闭式通道。当储能装置需要存储能量时，关闭散热风扇30和出风口111处的自垂式通风帘，尽可能地减少储能本体21与外界的热量交换。如果需要消耗多余的热能，可以通过出风口111处的管路与外部设备连通。当储能装置存储的能量达到其承载能力且无法及时快速地消耗掉时，可以打开出风口111的自垂式通风帘，并通过散热风 扇30及时散热，提高储能装置温度调节的灵活性。
请一并参阅图4至图6，作为一种可选的实施方式，储能本体21包括相互拼接的多个子储能模块21a。进一步可选地，每个子储能模块21a为长方体结构件。
在一些实施例中，每个子储能模块21a设置有沿第一方向X贯穿自身的传热孔道211。传导件22为整个电阻丝时，整个电阻丝在各个子储能模块21a的传热孔道211内来回缠绕设置。传导件22为多个电阻丝或者多个电加热棒时，多个电阻丝或者多个电加热棒的首尾依次连接地容纳于多个子储能模块21a的传热孔道211内。
在一些实施例中，相邻的至少两个子储能模块21a之间形成有沿第一方向X延伸的传热孔道211。传导件22为整个电阻丝时，整个电阻丝在各个子储能模块21a之间形成的多个传热孔道211内来回缠绕设置。传导件22为多个电阻丝或者多个电加热棒时，多个电阻丝或者多个电加热棒的首尾依次连接地容纳于多个子储能模块21a之间形成的多个传热孔道211内。
具体来说，每个子储能模块21a包括沿第一方向X贯穿自身的第一预制槽211a，第一预制槽211a位于子储能模块21a的各个角处，且相邻的各个子储能模块21a的第一预制槽211a共同形成传热孔道211。可选地，当子储能模块21a为长方体结构件时，第一预制槽211a位于子储能模块21a的四个角处，相邻的四个子储能模块21a的第一预制槽211a共同形成传热孔道211。
可选地，每个子储能模块21a包括沿第一方向X贯穿自身的第二预制槽211b，第二预制槽211b位于子储能模块21a的表面上，且相邻的两个子储能模块21a的第二预制槽211b共同形成传热孔道211。可选地，当子储能模块21a为长方体结构件时，第二预制槽211b位于子储能模块21a的至少两个表面上，且相邻的两个子储能模块21a的第二预制槽211b共同形成传热孔道211。
作为一种可选的实施方式，每个子储能模块21a的多个角处分别设置有第一预制槽211a，每个子储能模块21a的多个表面上分别设置有第二预制槽211b。由此，相互拼接的多个子储能模块21a之间可以共同形成更多 个传热孔道211，增大了传导件22在储能本体21内的分布密度，进而提高了储热构件20的导热效率。
进一步地，每个子储能模块21a还包括沿第二方向Y贯穿自身的通风道212，通风道212与第一预制槽211a和第二预制槽211b相互隔离设置。
如图3和图4所示，储能本体21包括相互拼接的48个子储能模块21a，每个子储能模块21a为长方体结构件，48个子储能模块21a拼接为4层、每层有3行4列子储能模块21a的立方体结构，每个子储能模块21a的四个边角处分别设置有沿第一方向X贯穿自身的第一预制槽211a，48个子储能模块21a的第一预制槽211a共形成6个传热孔道211。另外，每个子储能模块21a的上、下边缘处分别设置有沿第一方向X贯穿自身的第二预制槽211b，48个子储能模块21a的第二预制槽211b共形成9个传热孔道211。整个传导件22在由第一预制槽211a和第二预制槽211b形成的15个传热孔道211内来回缠绕设置。
另外，每个子储能模块21a还包括沿第二方向Y贯穿自身的2个通风道212，2个通风道212与第一预制槽211a和第二预制槽211b均相互隔离设置，48个子储能模块21a总共形成有32个通风道212。
由此，多个子储能模块21a相互拼接后具有立方体形状，从而可以由多个第一预制槽211a和多个第二预制槽211b相互拼接形成储能本体21的多个传热孔道211，以容纳传导件22。同时，散热风扇30对应于多个通风道212的两端设置，以提高储能装置的散热效果。模块化设计的多个子储能模块21a可以根据使用需求任意拼接为不同大小体积的储能本体21，子储能模块21a的数量或者单个储能本体21的总体积与传导件22的总长度成正比，传导件22的长度与功率消耗能力成正比，同时更多的子储能模块21a意味着可以存储更多的热量，扩展方便，提高了子储能模块21a的通用性和灵活性，满足风电场级的储能需求，也便于库存管理。
再次参阅图2，储热构件20还包括支撑储能本体21的底座23，底座23主要起到绝缘和隔热作用，其材质例如可以为耐高温尼龙等塑料，也可以是金属板包裹尼龙等耐温层。储热构件20通过压紧装置24将储能本体21和底座23固连为一体，并固定于壳体10的壁部，防止储热构件20在壳 体10内因颠簸或者振动而移动，进而碰伤储能本体21。
具体来说，压紧装置24包括压盖241和设置于压盖241上的紧固件242，压盖241压合于储能本体21，紧固件与壳体10的壁部固定连接。紧固件242可以为具有外螺纹的螺栓，壳体10的壁部设置有内螺纹孔，压紧装置24通过紧固件242与壁部的内螺纹孔之间的螺纹连接实现壳体10与储热构件20之间的距离可调，从而压紧或者松开储热构件20。
进一步地，壳体10的壁部还包括沿第一方向X相对设置的第三壁13和第四壁14，传导件22的一端从第三壁13伸出，储能本体21与第三壁13和第四壁14之间保持预定间隙。该预定间隙例如可以为200mm，以允许壳体10内部的空气流动，防止传导件22发生故障导致壳体10通电。
如前所述的壳体10的材质优选为金属材料，具有一定的结构强度。可选地，壳体10的外表面设置有隔热层，以最大限度地降低壳体10的内部与外部之间的热量传递。隔热层的材质通常为非金属的泡沫，也可以起到绝缘的效果。
另外，储能装置1还包括温度监测装置(图中未示出)和与温度监测装置电连接的控制器(图中未示出)，温度监测装置可以设置于壳体10内或者储能本体21内，以实时监测储能本体21的温度，并根据监测的温度，通过控制器启动或者关闭散热风扇30，以实现自动控制。
为了更有效的控制储能装置1，储热构件20的传导件22与外部能量装置之间设置有开关25，开关25可以通过控制器切断电能的传输，只在必要时进行发热，从而可以根据外部能量装置是否需要进行额外的功率消耗控制储能装置1的启动与关闭。
参阅图7，本申请还提供了一种储能系统，应用于风力发电机组，该储能系统包括如前所述的任一种储能装置1和变流器2，储能装置1的传导件22与变流器2电连接。
变流器2作为风力发电机组的重要组成部件，在风力发电机组的运行过程中的作用至关重要。风力发电机组在正常工作时，由于风况不确定性，会使得发电机3的发电电压波动，电压波动可能导致发电机3上的浪涌保 护器以及其它零部件受到损伤。
可选地，储能装置1放置于变流器2的功率元件的附近，功率元件例如为整流器和/或逆变器。储能装置1的传导件22的一端从壁部伸出与变流器2电连接，另一端与储能本体21连接，可以快速消耗变流器的过量电能，并以热能的方式将过量电能存储在储能本体21内，既可以减少电压峰值对浪涌保护器以及其它零部件的影响，也能够有效地节约能量，有利于调节风力发电机组的发电功率。
本申请提供的一种储能系统，采用如前所述的任一种储能装置1，可以有效地节约、利用能量，降低了风力发电机组的自耗电，有利于调节风力发电机组的发电功率。
另外，本申请还提供了一种风力发电机组，包括如前所述的储能系统。
参阅图8，本申请还提供了一种应用于如前所述的储能系统的储能方法，该储能方法主要包括两个控制部分：能量存储为热量部分和热量消耗部分。
具体来说，该储能方法包括：
步骤S1：确定变流器2是否需要进行额外的功率消耗。该信息可以从风力发电机组自身的控制系统中获取变流器2是否需要进行额外的功率消耗，例如，发电机3的发电电压由于风况突变导致过高，或风力发电机组进行低电压穿越时需要消耗大量的无用功率等。
步骤S21：如果是，则通过控制器启动传导件22与变流器2之间的开关25，以使储能装置1与变流器2电连接。储能装置1作为用电设备接入进行功率消耗。
步骤S22：如果否，则通过控制器关闭传导件22与变流器2之间的开关25，以使储能装置1与变流器2保持离线。储能装置1保持离线，与风力发电机组的发电系统不产生连接关系。
进一步地，步骤S21中通过控制器启动传导件22与变流器2之间的开关25，以使储能装置1与变流器2电连接之后，该储能方法还包括：
步骤S3：获取储能装置1的温度，并将该温度与储能装置1的允许温度阈值进行比较：
步骤S4：如果该温度大于允许温度阈值，则通过控制器启动储能装置1的散热风扇30。
如果该温度不大于允许温度阈值，则可以根据实际需求例如是否需要利用这些存储的热量，例如，将夜间电网用电需求低时的电能储备为热能，为居民冬天进行供暖，或者为附近工厂需要加热的生产工序提供服务。
本申请提供的一种储能系统的储能方法，在需要消耗变流器2产生的额外能量时，可以通过储能装置1快速消耗变流器2产生的能量，同时对于消耗的能量可以进行存储，并在需要的时候以热量的形式使用，有效地节约和利用能量。
本领域技术人员应能理解，上述实施例均是示例性而非限制性的。在不同实施例中出现的不同技术特征可以进行组合，以取得有益效果。本领域技术人员在研究附图、说明书及权利要求书的基础上，应能理解并实现所揭示的实施例的其他变化的实施例。在权利要求书中，术语“包括”并不排除其他装置或步骤；物品没有使用数量词修饰时旨在包括一个/种或多个/种物品，并可以与“一个/种或多个/种物品”互换使用”；术语“第一”、“第二”用于标示名称而非用于表示任何特定的顺序。权利要求中的任何附图标记均不应被理解为对保护范围的限制。权利要求中出现的多个部分的功能可以由一个单独的硬件或软件模块来实现。某些技术特征出现在不同的从属权利要求中并不意味着不能将这些技术特征进行组合以取得有益效果。

Claims (20)

  1. 一种储能装置，包括：
    壳体，具有由壁部形成的容纳腔；
    储热构件，设置于所述容纳腔，所述储热构件包括储能本体和传导件，所述储能本体设置有沿第一方向贯穿自身的多个传热孔道，所述传导件容纳于多个所述传热孔道内，且所述传导件的一端从所述壁部伸出，以与外部能量装置电连接。
  2. 根据权利要求1所述的储能装置，其中，所述储能本体为由镁或者包含镁的合金制成的长方体结构件。
  3. 根据权利要求1所述的储能装置，其中，所述储能本体包括相互拼接的多个子储能模块，每个所述子储能模块设置有沿所述第一方向贯穿自身的所述传热孔道。
  4. 根据权利要求1所述的储能装置，其中，所述储能本体包括相互拼接的多个子储能模块，每个所述子储能模块为长方体结构件，相邻的至少两个所述子储能模块之间形成有沿所述第一方向延伸的所述传热孔道。
  5. 根据权利要求4所述的储能装置，其中，每个所述子储能模块包括沿所述第一方向贯穿自身的第一预制槽，所述第一预制槽位于所述子储能模块的四个角处，且相邻的四个所述子储能模块的所述第一预制槽共同形成所述传热孔道。
  6. 根据权利要求4所述的储能装置，其中，每个所述子储能模块包括沿所述第一方向贯穿自身的第二预制槽，所述第二预制槽位于所述子储能模块的至少两个表面上，且相邻的两个所述子储能模块的所述第二预制槽共同形成所述传热孔道。
  7. 根据权利要求1所述的储能装置，其中，所述传导件为连续地容纳于多个所述传热孔道内的整个电阻丝。
  8. 根据权利要求1所述的储能装置，其中，所述传导件为容纳于多个所述传热孔道内的多个电阻丝或者多个电加热棒，且所述多个电阻丝或者所述多个电加热棒的首尾依次连接。
  9. 根据权利要求1至8任一项所述的储能装置，其中，所述储能本体还设置有沿第二方向贯穿自身的通风道，所述通风道与所述传热孔道相互隔离设置，所述第二方向与所述第一方向相交设置。
  10. 根据权利要求9所述的储能装置，其中，所述储能装置还包括散热风扇，所述壳体的所述壁部包括沿第二方向相对设置的第一壁和第二壁，所述第一壁设置有出风口，所述出风口设置有与外部设备连通的管路，所述散热风扇设置于所述第二壁，且对应于所述通风道设置。
  11. 根据权利要求10所述的储能装置，其中，所述壳体的所述出风口处设置有自垂式通风帘。
  12. 根据权利要求10所述的储能装置，其中，所述壳体的所述壁部还包括沿所述第一方向相对设置的第三壁和第四壁，所述传导件的一端从所述第三壁伸出，所述储能本体与所述第三壁之间以及所述储能本体与所述第四壁之间分别保持预定间隙。
  13. 根据权利要求1所述的储能装置，其中，所述壳体的外表面设置有隔热层。
  14. 根据权利要求1所述的储能装置，其中，所述储热构件还包括支撑所述储能本体的底座，所述储热构件通过压紧装置将所述储能本体和所述底座固连为一体，并固定于所述壳体的所述壁部。
  15. 根据权利要求14所述的储能装置，其中，所述压紧装置包括压盖和设置于所述压盖上的紧固件，所述压盖压合于所述储能本体，所述紧固件与所述壳体的所述壁部固定连接。
  16. 根据权利要求1所述的储能装置，其中，所述储能装置还包括温 度监测装置和与所述温度监测装置电连接的控制器，所述温度监测装置设置于所述壳体内或者所述储能本体内。
  17. 一种储能系统，应用于风力发电机组，所述储能系统包括：
    变流器；
    如权利要求1至16任一项所述的储能装置，所述储能装置的传导件与所述变流器电连接。
  18. 一种储能方法，应用于如权利要求17所述的储能系统，包括：
    确定变流器是否需要进行额外的功率消耗；
    如果是，则通过控制器启动所述传导件与所述变流器之间的开关，以使所述储能装置与所述变流器电连接；
    如果否，则通过控制器关闭所述传导件与所述变流器之间的开关，以使所述储能装置与所述变流器保持离线。
  19. 根据权利要求18所述的储能方法，其中，所述通过控制器启动所述传导件与所述变流器之间的开关，以使所述储能装置与所述变流器电连接之后，还包括：
    获取所述储能装置的温度，并将该温度与所述储能装置的允许温度阈值进行比较：
    如果该温度大于所述允许温度阈值，则通过控制器启动储能装置的散热风扇。
  20. 一种风力发电机组，包括如权利要求17所述的储能系统。
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