WO2023109010A1 - 储能电池系统 - Google Patents

储能电池系统 Download PDF

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Publication number
WO2023109010A1
WO2023109010A1 PCT/CN2022/094452 CN2022094452W WO2023109010A1 WO 2023109010 A1 WO2023109010 A1 WO 2023109010A1 CN 2022094452 W CN2022094452 W CN 2022094452W WO 2023109010 A1 WO2023109010 A1 WO 2023109010A1
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WO
WIPO (PCT)
Prior art keywords
energy storage
battery
storage battery
cooling liquid
battery system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/094452
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English (en)
French (fr)
Inventor
高原
周俭节
曹伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sungrow Power Supply Co Ltd
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Sungrow Power Supply Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sungrow Power Supply Co Ltd filed Critical Sungrow Power Supply Co Ltd
Priority to AU2022408296A priority Critical patent/AU2022408296B2/en
Priority to EP22905778.1A priority patent/EP4379906A4/en
Priority to US18/692,466 priority patent/US20240387941A1/en
Publication of WO2023109010A1 publication Critical patent/WO2023109010A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/673—Containers for storing liquids; Delivery conduits therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • 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
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to the technical field of energy storage, and more specifically, relates to an energy storage battery system.
  • the heat dissipation method of the energy storage battery system is developing from the air-cooled heat dissipation method of the air conditioner to the liquid cooling heat dissipation method.
  • the battery In the liquid cooling heat dissipation method, the battery relies on the coolant inside the liquid cooling pipeline to remove heat, and the thermal management efficiency is higher.
  • energy storage battery systems are mostly box-type structures, and battery clusters and other components are arranged in containers or outdoor cabinets.
  • the protection level of the casing is required to be high, generally IP54 and above.
  • IP54 the protection level of the casing
  • the capacity of the shell is relatively fixed and in a sealed state, which is not convenient for flexible deployment on the project site.
  • both the shell and the battery are of high protection level, the processing is complicated, the cost is high, and it is not conducive to the cooling of the battery after thermal runaway. Explosion-proof treatment.
  • the object of the present invention is to provide an energy storage battery system.
  • the structural design of the energy storage battery system can effectively realize flexible changes in the number and location of battery modules, which is conducive to flexible deployment on the project site.
  • the present invention provides the following technical solutions:
  • An energy storage battery system comprising:
  • a liquid cooling unit the liquid cooling unit has a coolant outlet and a coolant inlet;
  • a support structure at least part of the support structure is open, the support structure has a first cooling liquid channel and a second cooling liquid channel inside, the inlet of the first cooling liquid channel is connected to the cooling liquid of the liquid cooling unit The outlet is connected, and the outlet of the second cooling liquid channel is connected with the cooling liquid inlet of the liquid cooling unit;
  • each of the battery modules has a heat exchanger inside, the coolant inlet of the heat exchanger communicates with the outlet of the first coolant channel, the The cooling liquid outlet of the heat exchanger communicates with the inlet of the second cooling liquid channel, and the cooling liquid flowing out from the liquid cooling unit passes through the first cooling liquid channel, the heat exchanger of the battery module and the second cooling liquid channel in sequence Then return to the liquid cooling unit.
  • the support structure includes a support frame
  • the support frame includes a plurality of support beams.
  • the support structure includes a support platform
  • the supporting platform is a foundation platform or a metal platform.
  • the outlet of the first cooling liquid channel communicates with the cooling liquid inlet of the heat exchanger through a detachable adapter
  • the coolant outlet of the heat exchanger communicates with the inlet of the second coolant channel through a detachable adapter.
  • the above energy storage battery system further includes any one or more of the battery management module and the power conversion unit fixed on the support structure;
  • the casings of the battery management module and the power conversion unit are both dustproof and waterproof casings.
  • the liquid cooling unit is fixed on the support structure.
  • the above-mentioned energy storage battery system includes at least one battery cluster, and the battery cluster includes a plurality of stacked battery modules.
  • the multiple support structures there are multiple support structures, and the multiple support structures are sequentially fixed on the foundation platform;
  • the liquid cooling unit is fixed in at least one of the support structures; the battery cluster and the battery management module located at the bottom or top of the battery cluster are fixed in at least one of the support structures; at least one of the support structures is fixed in There is a power conversion unit.
  • the liquid cooling unit communicates with both the first cooling liquid channel and the second cooling liquid channel of the multiple support structures.
  • the number of the support structures is multiple;
  • the energy storage system also includes a fire fighting unit, and the fire fighting unit includes multiple parallel fire extinguishing pipelines and multiple parallel alarm detection modules
  • the multiple fire extinguishing pipelines are respectively used to supply fire extinguishing media to the battery clusters in multiple support structures, and the multiple alarm detection modules are respectively used to detect whether there is a fire in the battery clusters in multiple support structures and when a fire occurs Call the police.
  • the housing of the battery module has a vacuum cavity inside or the battery housing has an insulating layer inside.
  • the housing of the battery module is provided with a pressure relief port and a pressure limiting valve disposed at the pressure relief port.
  • a first cooling liquid channel and a second cooling liquid channel are arranged inside the support structure, and the replacement of the liquid cooling unit and the battery module through the first cooling liquid channel and the second cooling liquid channel
  • the heat exchanger is connected so that the cooling liquid flowing out from the liquid cooling unit passes through the first cooling liquid channel, the heat exchanger of the battery module and the second cooling liquid channel in sequence, and then flows back to the liquid cooling unit to realize heat dissipation of the battery.
  • both the first cooling liquid channel and the second cooling liquid channel are prefabricated inside the supporting structure, and at least part of the supporting structure is open, that is, the supporting structure has a matching hole, the battery module can pass through the matching hole to Access to the support structure, so that the number and position of the battery modules can be adjusted through the deployment holes of the support structure to adapt to the on-site project, which is conducive to flexible deployment on the project site.
  • Fig. 1 is a schematic structural diagram of an energy storage battery system provided by an embodiment of the present invention
  • Fig. 2 is a structural schematic diagram of the support frame in Fig. 1;
  • FIG 3 is a schematic diagram of the battery cluster in Figure 1;
  • Fig. 4 is a structural schematic diagram of a battery cluster
  • Fig. 5 is a schematic diagram of an energy storage battery system provided by another embodiment
  • Fig. 6 is a schematic structural diagram of the energy storage battery system in Fig. 5;
  • Fig. 7 is a schematic diagram of an energy storage battery system provided by another embodiment
  • Fig. 8 is a schematic diagram of an energy storage battery system provided by another embodiment
  • Fig. 9 is a schematic diagram of an energy storage battery system provided by another embodiment.
  • Fig. 10 is a schematic diagram of an energy storage battery system provided by another embodiment
  • Fig. 11 is a cross-sectional view of the battery module casing provided by the present invention.
  • 1-support frame 11-first coolant channel, 12-second coolant channel, 2-liquid cooling unit, 3-battery module, 4-power conversion unit, 5-battery management module, 6-foundation platform, 7-fire fighting unit, 8-shell of the battery module, 81-vacuum chamber.
  • the purpose of the present invention is to provide an energy storage battery system.
  • the structural design of the energy storage battery system can effectively realize flexible changes in the number and position of battery modules, which is beneficial to flexible deployment on the project site.
  • the energy storage battery system provided by the present invention includes a liquid cooling unit 2 , a support structure and multiple battery modules 3 .
  • the liquid cooling unit 2 has a cooling liquid outlet and a cooling liquid inlet, and the cooling liquid enters the liquid cooling unit 2 through the cooling liquid inlet of the liquid cooling unit 2 .
  • the liquid cooling unit 2 refrigerates the cooling liquid to reduce the temperature of the cooling liquid entering the liquid cooling unit 2 , and the refrigerated cooling liquid is discharged through the cooling liquid outlet of the liquid cooling unit 2 .
  • At least part of the support structure is open, that is, the support structure has a deployment hole, and the battery module can pass through the deployment hole to enter and exit the support structure.
  • the inside of the support structure has a first cooling liquid channel 11 and a second cooling liquid channel 12, that is, the inside of the support structure is prefabricated with the first cooling liquid channel 11 and the second cooling liquid channel 12, and only the first cooling liquid channel 11 and the second cooling liquid channel.
  • the inlet and outlet of the fluid channel 12 are exposed on the surface of the support structure.
  • the inlet of the first cooling liquid passage 11 communicates with the cooling liquid outlet of the liquid cooling unit 2
  • the outlet of the second cooling liquid passage communicates with the cooling liquid inlet of the liquid cooling unit 2 .
  • the support structure may include a support beam, and the battery module 3 is fixedly connected to the support beam.
  • Each battery module 3 has a heat exchanger inside, the coolant inlet of the heat exchanger communicates with the outlet of the first coolant channel 11, the coolant outlet of the heat exchanger communicates with the inlet of the second coolant channel, and the coolant from the liquid cooling
  • the cooling liquid flowing out of the unit 2 passes through the first cooling liquid channel 11 , the heat exchanger of the battery module 3 and the second cooling liquid channel 12 in turn, and then flows back to the liquid cooling unit 2 .
  • the cooling liquid flows through the heat exchanger of the battery module 3, it takes away the heat inside the battery module 3, so as to realize the heat dissipation of the battery.
  • the heat exchangers of multiple battery modules 3 can be connected in parallel or in series, or the heat exchangers in some battery modules 3 can be connected in series first and then connected in parallel with the heat exchangers in the rest of the battery modules 3 .
  • the casing 8 of the battery module 3 is a waterproof and dustproof casing. Specifically, the protection level of the casing 8 of the battery module 3 is IP54 and above.
  • a first cooling liquid channel 11 and a second cooling liquid channel 12 are provided inside the support structure, through which the liquid cooling unit 2 and the The heat exchanger of the battery module 3 is connected, so that the cooling liquid flowing out from the liquid cooling unit 2 passes through the first cooling liquid channel 11, the heat exchanger of the battery module 3 and the second cooling liquid channel 12 in sequence, and then returns to the liquid cooling unit.
  • the unit 2 realizes the heat dissipation of the battery.
  • the battery module 3 can pass through
  • the adjustment holes are used to enter and exit the support structure, so that the number and position of the battery modules 3 can be adjusted through the adjustment holes of the support structure to adapt to the on-site project, which is conducive to flexible deployment on the project site.
  • the support structure may comprise a support frame 1 .
  • the supporting frame 1 includes a plurality of supporting beams, the first cooling liquid channel 11 and the second cooling liquid channel 12 may be located inside the supporting beams, and the first cooling liquid channel 11 and the second cooling liquid channel 12 extend along the supporting beams.
  • the support beam may include multiple cross beams and multiple longitudinal beams.
  • the structure of the support frame 1 may be designed according to actual conditions, which is not limited herein.
  • the supporting structure includes a supporting platform, and multiple battery modules 3 can be fixed on the supporting platform.
  • the supporting platform can be the foundation platform 6 or a metal platform, and of course, the supporting platform can also be made of other materials.
  • a support frame 1 can also be provided on the support platform, so that a plurality of battery modules 3 can be fixedly assembled with the support frame 1 .
  • the support frame 1 may also include a bottom plate, which is not limited here.
  • the supporting structure may also be a warehouse, which is not limited here.
  • the outlet of the first cooling liquid channel 11 communicates with the cooling liquid inlet of the heat exchanger through a detachable adapter.
  • the coolant outlet of the heat exchanger is also communicated with the inlet of the second coolant passage through a detachable adapter.
  • the energy storage battery system further includes any one or more of the battery management module 5 and the power conversion unit 4 fixed on the support structure.
  • the battery management module 5, the power conversion unit 4 and the battery module 3 are mutually independent components, and the battery management module 5, the power conversion unit 4 and the battery module 3 are integrated on one or more supporting structures, which is more convenient for management ,transportation.
  • the battery management module 5 is mainly used to control the on-off of the battery cluster, monitor and manage the state of the battery cluster.
  • the casings 8 of the temperature control unit, the battery management module 5 and the power conversion unit 4 are all dustproof and waterproof casings, and the protection level of the dustproof and waterproof casings is IP54 and above.
  • the liquid cooling unit 2 can be fixed on a supporting structure. Certainly, as shown in FIG. 10 , the liquid cooling unit 2 may not be fixed on the support structure, and the position of the liquid cooling unit 2 may be designed according to the actual situation.
  • the energy storage battery system may include at least one battery cluster, and the battery cluster includes a plurality of stacked battery modules 3 . Multiple stacked battery modules 3 can be connected in parallel. When there are multiple battery clusters, the multiple battery clusters are arranged in sequence.
  • the supporting frame 1 is provided with a storage area for the liquid cooling unit 2, a storage area for the power conversion unit 4, a storage area for the battery management module 5, and a storage area for multiple battery modules.
  • the liquid cooling unit 2 is fixed in the placement area of the liquid cooling unit 2; a plurality of battery clusters are respectively fixed in a plurality of battery module placement areas; the power conversion unit 4 is fixed in the power conversion unit 4 placement area; the battery management module 5 is fixed in the The battery management module 5 placement area.
  • a plurality of battery clusters are arranged in sequence, and the power conversion unit 4 is located on the upper side of the battery management module 5 .
  • a battery management module may be provided on the lower side of the multiple battery modules 3 stacked in the battery cluster.
  • the support frame 1 is provided with a placement area for a liquid cooling unit 2, a placement area for a power conversion unit 4, a placement area for a battery management module 5, and a plurality of battery modules 3 place.
  • the liquid cooling unit 2 is fixed in the placement area of the liquid cooling unit; multiple battery clusters are respectively fixed in the placement area of multiple battery modules 3;
  • the power conversion unit 4 is fixed in the placement area of the power conversion unit 4;
  • the battery management module 5 is fixed in the The battery management module 5 placement area.
  • the power conversion unit 4 is located on the upper side of the battery management module 5 , and a plurality of battery clusters are arranged on both sides of the power conversion unit 4 and the battery management module 5 .
  • the power conversion unit 4 is located on the upper side of the battery management module 5, the liquid cooling unit 2 is located on one side of the supporting structure in the longitudinal direction, and the power conversion unit 4 and the battery management module 5 are located on the On the other side in the length direction of the support structure, multiple battery clusters are arranged in sequence between the liquid cooling unit 2 and the power conversion unit 4 .
  • a battery management module 5 may be provided on the lower side of the multiple battery modules 3 stacked in the battery cluster.
  • a liquid cooling unit 2 is fixed in at least one support structure; a battery cluster and a battery management module 5 located at the bottom or top of the battery cluster are fixed in at least one support structure; a power conversion unit 4 is fixed in at least one of the support structures .
  • Such an arrangement realizes the integration of the mutually independent liquid cooling unit 2 and the battery cluster.
  • the liquid cooling unit 2 communicates with both the first cooling liquid channel 11 and the second cooling liquid channel 12 of the multiple supporting structures.
  • the liquid cooling unit 2 can supply cooling liquid to multiple battery clusters fixed on the support structure, so that multiple battery clusters can share one liquid cooling unit 2 , which reduces the cost and simplifies the structure.
  • the number of support structures is multiple.
  • the energy storage system also includes a fire fighting unit 7.
  • the fire fighting unit 7 includes multiple parallel fire extinguishing pipelines and multiple parallel alarm detection modules.
  • the multiple fire extinguishing pipelines are respectively used to supply fire extinguishing to the battery clusters in multiple support structures. medium. Specifically, when a fire occurs in the battery cluster, the fire extinguishing medium is supplied to the inside of the battery cluster to realize fire extinguishing.
  • the plurality of alarm detection modules are respectively used to detect whether there is fire in the battery clusters in the plurality of support structures and to give an alarm when fire occurs. Specifically, the alarm detection module detects a fire in the battery cluster and alarms to prompt the staff. With this arrangement, multiple battery clusters share one firefighting unit 7, which reduces the cost and simplifies the structure.
  • the fire extinguishing medium can be water, fine water mist, perfluorohexanone, heptafluoropropane or aerosol, which is not limited here.
  • the casing 8 of the battery module 3 may have a vacuum cavity 81 inside or an insulating layer inside the casing 8 of the battery module 3 .
  • the casing 8 of the battery module 3 is provided with a pressure relief port and a pressure limiting valve arranged at the pressure relief port.
  • the pressure in the casing 8 of the battery module 3 reaches a preset value, the pressure can be released through the pressure limiting valve.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本发明公开了一种储能电池系统，包括：液冷机组，所述液冷机组具有冷却液出口和冷却液进口；支撑结构，所述支撑结构的至少局部为开放式，所述支撑结构内部具有第一冷却液通道和第二冷却液通道，所述第一冷却液通道的进口与所述液冷机组的冷却液出口连通，所述第二冷却液通道的出口与所述液冷机组的冷却液进口连通；装配于所述支撑结构上的多个电池模组，每个所述电池模组内部具有换热器，所述换热器的冷却液进口与所述第一冷却液通道的出口连通，所述换热器的冷却液出口与所述第二冷却液通道的进口连通。该储能电池系统的结构设计可以有效地实现电池模组数量和位置的灵活变动。

Description

储能电池系统
本申请要求于2021年12月13日提交中国专利局、申请号为202123136324.2、发明名称为“储能电池系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及储能技术领域，更具体地说，涉及一种储能电池系统。
背景技术
储能电池系统的散热方式正在由空调风冷散热方式向液冷散热发展，液冷散热方式中，电池依靠液冷管路内部的冷却液带走热量，热管理效率更高。
现有技术中，储能电池系统多为箱式结构，电池簇等部件设置在集装箱或户外柜等壳体内，为防止泄漏，壳体的防护等级要求较高，一般在IP54及以上。然而，如此设置，壳体的容量相对固定且处于密封状态，不便于项目现场灵活调配，而且壳体和电池均为高防护等级，加工复杂、成本高，且不利于电池热失控后的降温、防爆处理。
发明内容
有鉴于此，本发明的目的在于提供一种储能电池系统，该储能电池系统的结构设计可以有效地实现电池模组数量和位置的灵活变动，利于项目现场灵活调配。
为了达到上述目的，本发明提供如下技术方案：
一种储能电池系统，包括：
液冷机组，所述液冷机组具有冷却液出口和冷却液进口；
支撑结构，所述支撑结构的至少局部为开放式，所述支撑结构内部具有第一冷却液通道和第二冷却液通道，所述第一冷却液通道的进口与所述液冷机组的冷却液出口连通，所述第二冷却液通道的出口与所述液冷机组的冷却液进口连通；
装配于所述支撑结构上的多个电池模组，每个所述电池模组内部具有换热器，所述换热器的冷却液进口与所述第一冷却液通道的出口连通，所述换热器的冷却液出口与所述第二冷却液通道的进口连通，从所述液冷机组流出的冷却 液依次经第一冷却液通道、电池模组的换热器和第二冷却液通道后回流至所述液冷机组。
优选地，上述储能电池系统中，所述支撑结构包括支撑框架；
所述支撑框架包括多个支撑梁。
优选地，上述储能电池系统中，所述支撑结构包括支撑平台；
所述支撑平台为地基平台或金属平台。
优选地，上述储能电池系统中，所述第一冷却液通道的出口与所述换热器的冷却液进口通过可拆卸的转接件连通；
所述换热器的冷却液出口与所述第二冷却液通道的进口通过可拆卸的转接件连通。
优选地，上述储能电池系统中，还包括固定在所述支撑结构上的电池管理模块和功率转换单元中的任意一个或多个；
电池管理模块和功率转换单元的壳体均为防尘防水壳体。
优选地，上述储能电池系统中，所述液冷机组固定在所述支撑结构上。
优选地，上述储能电池系统中，包括至少一个电池簇，所述电池簇包括多个层叠设置的所述电池模组。
优选地，上述储能电池系统中，所述支撑结构的数量为多个，且多个支撑结构依次固定在地基平台上；
至少一个所述支撑结构内固定有所述液冷机组；至少一个所述支撑结构内固定有所述电池簇和位于所述电池簇底部或顶部的电池管理模块；至少一个所述支撑结构内固定有功率转换单元。
优选地，上述储能电池系统中，所述支撑结构的数量为多个；所述液冷机组与多个所述支撑结构的第一冷却液通道和第二冷却液通道均连通。
优选地，上述储能电池系统中，所述支撑结构的数量为多个；该储能系统还包括消防单元，所述消防单元的包括多个并联的灭火管路和多个并联的报警探测模块，多个所述灭火管路分别用于向多个支撑结构内的电池簇供灭火介质，多个所述报警探测模块分别用于检测多个支撑结构内的电池簇内是否起火且在起火时报警。
优选地，上述储能电池系统中，所述电池模组的壳体的内部具有真空腔或者所述电池壳体的内部具有保温层。
优选地，上述储能电池系统中，所述电池模组的壳体开设有泄压口和设置于所述泄压口处的限压阀。
本申请提供的储能电池系统中，支撑结构的内部设置有第一冷却液通道和第二冷却液通道，通过第一冷却液通道和第二冷却液通道将液冷机组和电池模组的换热器连通，以使从液冷机组流出的冷却液依次经第一冷却液通道、电池模组的换热器和第二冷却液通道后回流至液冷机组，实现电池的散热。
由上可知，由于第一冷却液通道和第二冷却液通道均预制于支撑结构的内部，且支撑机构的至少局部为开放式，即支撑结构具有调配孔，电池模组可以穿过调配孔以进出支撑结构，如此可以通过支撑结构的调配孔调整电池模组的数量和位置，以适应现场项目，有利于项目现场灵活调配。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明一种实施例提供的储能电池系统的结构示意图；
图2为图1中的支撑框架的结构示意图；
图3为图1中电池簇的简图；
图4为电池簇的结构示意图；
图5为另一实施例提供的储能电池系统的简图；
图6为图5中储能电池系统的结构示意图；
图7为另一实施例提供的储能电池系统的简图；
图8为另一实施例提供的储能电池系统的简图；
图9为另一实施例提供的储能电池系统的简图；
图10为另一实施例提供的储能电池系统的简图；
图11为本发明提供的电池模组壳体的剖视图。
在图1-11中：
1-支撑框架、11-第一冷却液通道、12-第二冷却液通道、2-液冷机组、3-电池模组、4-功率转换单元、5-电池管理模块、6-地基平台、7-消防单元、8- 电池模组的壳体、81-真空腔。
具体实施方式
本发明的目的在于提供一种储能电池系统，该储能电池系统的结构设计可以有效地实现电池模组数量和位置的灵活变动，利于项目现场灵活调配。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”和“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的位置或元件必须具有特定方位、以特定的方位构成和操作，因此不能理解为本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
请参阅图1-图10，本发明提供的储能电池系统包括液冷机组2、支撑结构以及多个电池模组3。
其中，液冷机组2具有冷却液出口和冷却液进口，冷却液经液冷机组2的冷却液进口进入液冷机组2。液冷机组2对冷却液进行制冷，以降低进入液冷机组2内的冷却液温度，制冷后的冷却液经液冷机组2的冷却液出口排出。
支撑结构的至少局部为开放式，即支撑结构具有调配孔，电池模组可以穿过调配孔以进出支撑结构。支撑结构内部具有第一冷却液通道11和第二冷却液通道12，即支撑结构的内部预制有第一冷却液通道11和第二冷却液通道12，仅第一冷却液通道11和第二冷却液通道12的进口和出口外露于支撑结构的表面。第一冷却液通道11的进口与液冷机组2的冷却液出口连通，第二冷却液通道的出口与液冷机组2的冷却液进口连通。
多个电池模组3装配于支撑结构上，具体地，多个电池模组3固定在支撑结构上。支撑结构可以包括支撑梁，电池模组3与支撑梁固定连接。
每个电池模组3内部具有换热器，换热器的冷却液进口与第一冷却液通道11的出口连通，换热器的冷却液出口与第二冷却液通道的进口连通，从液冷机组2流出的冷却液依次经第一冷却液通道11、电池模组3的换热器和第二 冷却液通道12后回流至所述液冷机组2。冷却液流经电池模组3的换热器时带走电池模组3内部的热量，以实现对电池的散热。多个电池模组3的换热器可以并联或许串联，或者，部分电池模组3中的换热器可以先串联后再与其余的电池模组3中的换热器并联。
电池模组3的壳体8为防水防尘壳体，具体地，电池模组3的壳体8的防护等级在IP54及以上。
本申请提供的储能电池系统中，支撑结构的内部设置有第一冷却液通道11和第二冷却液通道12，通过第一冷却液通道11和第二冷却液通道12将液冷机组2和电池模组3的换热器连通，以使从液冷机组2流出的冷却液依次经第一冷却液通道11、电池模组3的换热器和第二冷却液通道12后回流至液冷机组2，实现电池的散热。
由上可知，由于第一冷却液通道11和第二冷却液通道12均预制于支撑结构的内部，且支撑机构的至少局部为开放式，即支撑结构具有调配孔，电池模组3可以穿过调配孔以进出支撑结构，如此可以通过支撑结构的调配孔调整电池模组3的数量和位置，以适应现场项目，有利于项目现场灵活调配。
在一具体实施例中，支撑结构可以包括为支撑框架1。支撑框架1包括多个支撑梁，第一冷却液通道11和第二冷却液通道12可以位于支撑梁内部，第一冷却液通道11和第二冷却液通道12沿着支撑梁延伸。具体地，支撑梁可以包括多个横梁和多个纵梁，当然，可以根据实际情况设计支撑框架1的结构，在此不作限定。
另一实施例中，支撑结构包括支撑平台，多个电池模组3可以固定在支撑平台上。
进一步地，支撑平台可以为地基平台6或金属平台，当然，支撑平台还可以为其它材质。支撑平台上还可以设置支撑框架1，以利用支撑框架1固定装配多个电池模组3。当然，支撑框架1也可以包括底板，在此不作限定。
当然，支撑结构也可以为栈房，在此不作限定。
为了便于连接，第一冷却液通道11的出口与换热器的冷却液进口通过可拆卸的转接件连通。换热器的冷却液出口与第二冷却液通道的进口也通过可拆卸的转接件连通。如此更加便于电池模组3的拆卸和安装。具体地，支撑结构的表面预留有多个转接件，安装电池模组3时，电池模组3的换热器可以就近 选择转接件进行连接。在不使用时，转接件封堵即可。
在一具体实施例中，储能电池系统还包括固定在支撑结构上的电池管理模块5和功率转换单元4中的任意一个或多个。如此，电池管理模块5、功率转换单元4和电池模组3为相互独立的部件，将电池管理模块5、功率转换单元4和电池模组3集成在一个或多个支撑结构上，更加便于管理、运输。电池管理模块5主要用于控制电池簇的通断，对电池簇状态进行监控及管理。
温控单元、电池管理模块5和功率转换单元4的壳体8均为防尘防水壳体，该防尘防水壳体的防护等级在IP54及以上。
如图1和图5所示，液冷机组2可以固定在支撑结构上。当然，如图10所示，液冷机组2也可以不固定在支撑结构上，液冷机组2的位置可以根据实际情况自行设计。
如图2和图3所示，储能电池系统可以包括至少一个电池簇，电池簇包括多个层叠设置的电池模组3。多个层叠设置的电池模组3可以并联。电池簇的数量为多个时，多个电池簇依次排布设置。
如图1-4所示，本申请的第一实施例中，支撑框架1设置有液冷机组2放置区、功率转换单元4放置区、电池管理模块5放置区和多个电池模组放置区。具体地，液冷机组2固定在液冷机组2放置区；多个电池簇分别固定在多个电池模组放置区；功率转换单元4固定在功率转换单元4放置区；电池管理模块5固定在电池管理模块5放置区。其中，多个电池簇依次排布，功率转换单元4位于电池管理模块5上侧。
该第一实施例中，电池簇的多个层叠设置的电池模组3下侧可以设置电池管理模块。
如图5和图6所示，本申请的第二实施例中，支撑框架1设置有液冷机组2放置区、功率转换单元4放置区、电池管理模块5放置区和多个电池模组3放置。具体地，液冷机组2固定在液冷机组放置区；多个电池簇分别固定在多个电池模组3放置区；功率转换单元4固定在功率转换单元4放置区；电池管理模块5固定在电池管理模块5放置区。其中，功率转换单元4位于电池管理模块5上侧，功率转换单元4和电池管理模块5的两侧均排布设置有多个电池簇。
如图7所示，本申请的第三实施例中，功率转换单元4位于电池管理模块 5上侧，液冷机组2位于支撑结构长度方向的一侧，功率转换单元4和电池管理模块5位于支撑结构长度方向的另一侧，多个电池簇在液冷机组2和功率转换单元4之间依次排布。
如图8所示，第三实施例中电池簇的多个层叠设置的电池模组3下侧可以设置电池管理模块5。
如图9所示，本申请的第四实施例中，支撑结构的数量为多个，多个支撑结构可以依次固定在地基平台6上。如此更加便于装配且更加稳固。其中至少一个支撑结构内固定有液冷机组2；至少一个支撑结构内固定有电池簇和位于所述电池簇底部或顶部的电池管理模块5；至少一个所述支撑结构内固定有功率转换单元4。如此设置，实现了相互独立的液冷机组2和电池簇的集成。
如图10所示，支撑结构的数量为多个；液冷机组2与多个支撑结构的第一冷却液通道11和第二冷却液通道12均连通。如此，液冷机组2可以给多个支撑结构上固定的电池簇供冷却液，以实现多个电池簇共用一个液冷机组2，降低了成本且简化了结构。
支撑结构的数量为多个。该储能系统还包括消防单元7，消防单元7的包括多个并联的灭火管路和多个并联的报警探测模块，多个灭火管路分别用于向多个支撑结构内的电池簇供灭火介质。具体地，当电池簇内起火时，向电池簇内部供灭火介质，以实现灭火。多个报警探测模块分别用于检测多个支撑结构内的电池簇内是否起火且在起火时报警，具体地，报警探测模块检测到电池簇内起火后报警，以提示工作人员。如此设置，多个电池簇共用一个消防单元7，降低了成本且简化了结构。
灭火介质可以为水、细水雾、全氟己酮、七氟丙烷或气溶胶，在此不作限定。
为了保持电池模组3的内部温度，电池模组3的壳体8的内部可以具有真空腔81或者电池模组3的壳体8的内部具有保温层。
另外，为了提高防爆性能，电池模组3的壳体8开设有泄压口和设置于所述泄压口处的限压阀。当电池模组3的壳体8内压力达到预设值时，可以通过限压阀进行泄压。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
在本说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。

Claims (12)

  1. 一种储能电池系统，其特征在于，包括：
    液冷机组(2)，所述液冷机组(2)具有冷却液出口和冷却液进口；
    支撑结构，所述支撑结构的至少局部为开放式，所述支撑结构内部具有第一冷却液通道(11)和第二冷却液通道(12)，所述第一冷却液通道(11)的进口与所述液冷机组(2)的冷却液出口连通，所述第二冷却液通道的出口与所述液冷机组(2)的冷却液进口连通；
    装配于所述支撑结构上的多个电池模组(3)，每个所述电池模组(3)内部具有换热器，所述换热器的冷却液进口与所述第一冷却液通道(11)的出口连通，所述换热器的冷却液出口与所述第二冷却液通道的进口连通，从所述液冷机组(2)流出的冷却液依次经第一冷却液通道(11)、电池模组(3)的换热器和第二冷却液通道(12)后回流至所述液冷机组(2)。
  2. 根据权利要求1所述的储能电池系统，其特征在于，所述支撑结构包括支撑框架(1)；
    所述支撑框架(1)包括多个支撑梁。
  3. 根据权利要求1所述的储能电池系统，其特征在于，所述支撑结构包括支撑平台；
    所述支撑平台为地基平台(6)或金属平台。
  4. 根据权利要求1所述的储能电池系统，其特征在于，所述第一冷却液通道(11)的出口与所述换热器的冷却液进口通过可拆卸的转接件连通；
    所述换热器的冷却液出口与所述第二冷却液通道的进口通过可拆卸的转接件连通。
  5. 根据权利要求1所述的储能电池系统，其特征在于，还包括固定在所述支撑结构上的电池管理模块(5)和功率转换单元(4)中的任意一个或多个；
    电池管理模块(5)和功率转换单元(4)的壳体均为防尘防水壳体。
  6. 根据权利要求1所述的储能电池系统，其特征在于，所述液冷机组(2)固定在所述支撑结构上。
  7. 根据权利要求3所述的储能电池系统，其特征在于，包括至少一个电池簇，所述电池簇包括多个层叠设置的所述电池模组(3)。
  8. 根据权利要求7所述的储能电池系统，其特征在于，所述支撑结构的数量为多个，且多个支撑结构依次固定在地基平台上；
    至少一个所述支撑结构内固定有所述液冷机组(2)；至少一个所述支撑结构内固定有所述电池簇和位于所述电池簇底部或顶部的电池管理模块；至少一个所述支撑结构内固定有功率转换单元(4)。
  9. 根据权利要求1所述的储能电池系统，其特征在于，所述支撑结构的数量为多个；所述液冷机组(2)与多个所述支撑结构的第一冷却液通道(11)和第二冷却液通道(12)均连通。
  10. 根据权利要求1所述的储能电池系统，其特征在于，所述支撑结构的数量为多个；该储能系统还包括消防单元(7)，所述消防单元(7)的包括多个并联的灭火管路和多个并联的报警探测模块，多个所述灭火管路分别用于向多个支撑结构内的电池簇供灭火介质，多个所述报警探测模块分别用于检测多个支撑结构内的电池簇内是否起火且在起火时报警。
  11. 根据权利要求1所述的储能电池系统，其特征在于，所述电池模组(3)的壳体(8)的内部具有真空腔(81)或者所述电池模组(3)的壳体(8)的内部具有保温层。
  12. 根据权利要求1所述的储能电池系统，其特征在于，所述电池模组(3)的壳体(8)开设有泄压口和设置于所述泄压口处的限压阀。
PCT/CN2022/094452 2021-12-13 2022-05-23 储能电池系统 Ceased WO2023109010A1 (zh)

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