WO2024164886A1 - 储能系统 - Google Patents

储能系统 Download PDF

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Publication number
WO2024164886A1
WO2024164886A1 PCT/CN2024/074733 CN2024074733W WO2024164886A1 WO 2024164886 A1 WO2024164886 A1 WO 2024164886A1 CN 2024074733 W CN2024074733 W CN 2024074733W WO 2024164886 A1 WO2024164886 A1 WO 2024164886A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
module unit
liquid outlet
branch
liquid
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/CN2024/074733
Other languages
English (en)
French (fr)
Inventor
孙立军
卢艳华
徐鹏程
毛志云
余东旭
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.)
Contemporary Amperex Technology Co Ltd
Contemporary Amperex Future Energy Research Institute Shanghai Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Contemporary Amperex Future Energy Research Institute Shanghai 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 Contemporary Amperex Technology Co Ltd, Contemporary Amperex Future Energy Research Institute Shanghai Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP24752742.7A priority Critical patent/EP4632877A4/en
Publication of WO2024164886A1 publication Critical patent/WO2024164886A1/zh
Priority to US19/282,140 priority patent/US20250357580A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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 field of heat dissipation technology, and in particular to an energy storage system.
  • Energy storage systems such as high-pressure direct-mounted energy storage valves, are usually composed of multiple energy storage submodules, each of which is composed of a power module unit and a battery module unit. During operation, the power module unit and the battery module unit will generate heat, and cooling pipes need to be designed to take away the heat generated by each.
  • the battery module unit is composed of battery cells to form a battery pack, or a battery cabinet, or a battery box, etc.
  • the existing energy storage system has a complex cooling pipe and a high cost.
  • the energy storage system provided in this application mainly solves the technical problem that the existing energy storage system has complex cooling pipelines and high costs.
  • the energy storage system includes: a liquid inlet main pipe and a liquid outlet main pipe; a first branch pipe connected between the liquid inlet main pipe and the liquid outlet main pipe, and including a first liquid inlet branch pipe and a first liquid outlet branch pipe; a second branch pipe connected between the liquid inlet main pipe and the liquid outlet main pipe, and including a second liquid inlet branch pipe and a second liquid outlet branch pipe; a battery module unit connected in series between the first liquid inlet branch pipe and the first liquid outlet branch pipe; and a power module unit connected in series between the second liquid inlet branch pipe and the second liquid outlet branch pipe.
  • the energy storage system includes a liquid inlet main pipe, a liquid outlet main pipe, a first branch pipe, a second branch pipe, a battery module unit and a power module unit, wherein the first branch pipe is connected between the liquid inlet main pipe and the liquid outlet main pipe, and includes a first liquid inlet branch pipe and a first liquid outlet branch pipe; the second branch pipe is connected between the liquid inlet main pipe and the liquid outlet main pipe, and includes a second liquid inlet branch pipe and a second liquid outlet branch pipe; the battery module unit is connected in series between the first liquid inlet branch pipe and the first liquid outlet branch pipe; the power module unit is connected in series between the first liquid inlet branch pipe and the first liquid outlet branch pipe; Between the second liquid inlet branch pipe and the second liquid outlet branch pipe, a design of a power module unit and a battery module unit sharing a cooling pipeline is realized, which simplifies the cooling pipeline and reduces the cost.
  • the first branch and the second branch are arranged in the same manner.
  • the above scheme can make the path lengths of the cooling pipelines corresponding to the first branch and the second branch consistent, that is, the battery module unit connected in series between the first liquid inlet branch and the first liquid outlet branch and the power module unit connected in series between the second liquid inlet branch and the second liquid outlet branch respectively correspond to cooling pipelines of the same length, so that when the pipe diameters are the same, the flow rates in the cooling pipelines in the battery module unit and the power module unit can be ensured to be basically consistent, thereby achieving uniform distribution of flow rates between different battery module units.
  • the first branch pipe and the second branch pipe have different pipe diameters.
  • the above solution ensures that the flow resistance of the coolant flowing through the first branch pipe and the second branch pipe is the same by making the first branch pipe and the second branch pipe have different pipe diameters, thereby achieving accurate distribution of the flow of the power module unit and the battery module unit.
  • a resistance element is further included; the resistance element is disposed in one or more tubes of the first liquid inlet branch, the first liquid outlet branch, the second liquid inlet branch, and the second liquid outlet branch.
  • the resistance element can be used to control the flow rate through the corresponding branch, thereby achieving accurate distribution of the flow between the power module unit and the battery module unit, and achieving uniform distribution of the flow between different battery module units.
  • the resistance of the design flow of the power module unit is greater than the resistance of the design flow of the battery module unit, and the resistance element is disposed in the first liquid inlet branch pipe and/or the first liquid outlet branch pipe; or
  • the resistance of the designed flow of the power module unit is smaller than the resistance of the designed flow of the battery module unit, and the resistance element is arranged in the second liquid inlet branch pipe and/or the second liquid outlet branch pipe.
  • the resistance element when the resistance of the design flow of the power module unit is greater than the resistance of the design flow of the battery module unit, the resistance element is arranged in the first liquid inlet branch pipe and/or the first liquid outlet branch pipe, and the resistance element can also be used to increase the resistance of the design flow of the battery module unit connected in series between the first liquid inlet branch pipe and the first liquid outlet branch pipe, so that the resistance of the design flow of the power module unit and the resistance of the design flow of the battery module unit tend to be the same, thereby achieving the power module unit and the battery module unit. Precise distribution of the flow of module units.
  • the resistance element is arranged in the tube of the second liquid inlet branch and/or the second liquid outlet branch, and the resistance element can also be used to increase the resistance of the design flow of the power module unit connected in series between the second liquid inlet branch and the second liquid outlet branch, so that the resistance of the design flow of the power module unit and the resistance of the design flow of the battery module unit tend to be the same, thereby achieving uniform distribution of flow between different battery module units and precise distribution of flow between power module units and battery module units.
  • the liquid inlet main pipe is located on a side of the battery module unit and the power module unit that is close to the ground
  • the liquid outlet main pipe is located on a side of the battery module unit and the power module unit that is away from the ground.
  • the above scheme adopts the configuration mode of cooling liquid entering from the bottom and exiting from the top, which can ensure that the gas in the cooling branches inside the battery module unit and the power module unit is effectively discharged without the need for a separate exhaust valve, thus saving costs.
  • the battery module unit includes a liquid supply pipe and a liquid return pipe spaced apart along a first direction, a plurality of branch pipes spaced apart in the first direction and connected between the liquid supply pipe and the liquid return pipe, and a plurality of batteries stacked in the first direction; each of the batteries is connected in series to one of the branch pipes; the bottom end of the liquid supply pipe is connected to the liquid inlet main pipe, and the top end of the liquid return pipe is connected to the liquid outlet main pipe; the plurality of branch pipes are arranged in the same manner.
  • the above scheme can ensure that the gas in the cooling pipeline inside the battery module unit is effectively discharged; and by further arranging multiple branch pipes in the same manner, it can effectively ensure that the length of the cooling pipeline path inside each battery module unit is consistent, thereby ensuring uniform distribution of flow between different battery module units.
  • a valve tower is also included; the valve tower includes a multi-layer bracket, and each layer of the bracket is provided with an energy storage sub-module, a liquid inlet main pipe, a liquid outlet main pipe, a plurality of the first branch pipes and a second branch pipe; each of the energy storage sub-module includes a power module unit and a plurality of the battery module units, and the plurality of the battery module units are arranged in a one-to-one correspondence with the plurality of the first branch pipes.
  • the above scheme can enable the energy storage system to be applied to the field of valve tower energy storage valves, so that each energy storage submodule on the multi-layer bracket of the valve tower can achieve uniform distribution of the flow of different battery module units, and ensure that the gas in the cooling pipeline inside the battery module unit and the power module unit is effectively discharged.
  • it also includes a liquid inlet main pipe and a liquid outlet main pipe; the liquid inlet main pipe and the liquid outlet main pipe are arranged on the valve tower and extend along the height direction of the valve tower; the liquid inlet main pipe is respectively connected to the liquid inlet mother pipe on each layer of the bracket, and the liquid outlet main pipe is respectively connected to the liquid outlet mother pipe on each layer of the bracket; the height of the end of the liquid outlet main pipe away from the ground is greater than the height of the liquid outlet mother pipe corresponding to the energy storage sub-module on the highest layer.
  • the above solution can ensure that the gas in the internal cooling pipelines of the battery module units and power module units in each energy storage submodule on each layer of the support of the valve tower is effectively discharged.
  • an exhaust valve is further provided at one end of the liquid outlet main pipe away from the ground.
  • a container is also included; one of the power module units and a plurality of the battery module units are arranged in the container; the liquid inlet main pipe is arranged on the bottom wall of the container, the liquid outlet main pipe is arranged on the top wall of the container and an exhaust valve is arranged at one end; the plurality of battery module units are arranged in a one-to-one correspondence with the plurality of the first branch pipes.
  • the cooling pipeline takes in water from the lower side of the container and discharges water from the upper side, so that the flow paths of the cooling pipelines of different battery module units in the container can be consistent. Moreover, since the water discharges from the upper side and an exhaust valve is provided at one end of the top wall of the container, the gas in the battery module unit can be effectively discharged, thereby achieving uniform distribution of flow and effective exhaust in different battery module units. In addition, the discharge of gas inside the cooling medium improves the heat exchange efficiency of the cold plate in the battery and improves the operating efficiency of the battery.
  • FIG1 is a top view of the liquid flow direction of an energy storage system provided by an embodiment of the present application.
  • FIG2 is a schematic diagram of the three-way structure on the liquid inlet main pipe side
  • FIG3 is a schematic diagram of the three-way structure of the liquid outlet main pipe side
  • FIG4 is a schematic diagram of a position of a resistance element in a single-branch cooling pipeline
  • FIG5 is a schematic structural diagram of a battery module unit
  • FIG6 is a front view of the liquid flow direction of the energy storage system provided by one embodiment of the present application.
  • FIG. 7 is a front view of the liquid flow direction of an energy storage system provided in another embodiment of the present application.
  • the term "and/or" is only a description of the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.
  • multiple refers to more than two (including two).
  • multiple groups refers to more than two groups (including two groups), and “multiple pieces” refers to more than two pieces (including two pieces).
  • the new high-voltage direct current energy storage technology integrates the VSC (voltage source converter) valve with the DC energy storage valve, and has the advantages of high modularity, good economic benefits, and high operational reliability.
  • the new high-voltage AC direct-mounted energy storage technology integrates the power module and the energy storage battery into a high-voltage AC direct-mounted energy storage sub-module, which is connected to the AC power grid after cascading. It has the advantages of high modularity, good economic benefits, and high operational reliability.
  • the new high-voltage DC direct-hung energy storage technology and the new high-voltage AC direct-hung energy storage technology eliminate the need to connect to the power grid through a transformer and can be directly connected to the high-voltage power grid.
  • the voltage level is ⁇ 1KV, such as ⁇ 10KV, ⁇ 35KV, ⁇ 500KV, and ⁇ 800KV.
  • the high-pressure direct-mounted energy storage valve is composed of multiple energy storage sub-modules, which are composed of power module units and electric
  • the power module unit and the battery module unit will generate heat during operation, and a cooling pipeline needs to be designed to remove the generated heat.
  • the power module unit and the battery module unit are usually connected to a cooling pipeline respectively to remove the heat through their corresponding cooling pipelines.
  • the cooling pipeline corresponding to this solution is complex and the cost is high.
  • the inventor of the present application proposed an energy storage system.
  • the battery module unit and the power module unit By connecting the battery module unit and the power module unit to the same liquid inlet main pipe and the same liquid outlet main pipe, a design in which the power module unit and the battery module unit share a cooling pipeline is realized, the cooling pipeline is simplified, and the cost is reduced.
  • Figure 1 is a top view of the liquid flow direction of the energy storage system provided in one embodiment of the present application
  • Figure 2 is a schematic diagram of the three-way structure of the liquid inlet main pipe side
  • Figure 3 is a schematic diagram of the three-way structure of the liquid outlet main pipe side
  • an energy storage system is provided.
  • the energy storage system includes a liquid inlet main pipe 1, a liquid outlet main pipe 2, a battery module unit 3 and a power module unit 4, a first branch pipe 5, and a second branch pipe 6.
  • the liquid inlet main pipe 1 and the liquid outlet main pipe 2 can be arranged in parallel with each other; the first branch pipe 5 is connected between the liquid inlet main pipe 1 and the liquid outlet main pipe 2, and the first branch pipe 5 includes a first liquid inlet branch pipe 51 and a first liquid outlet branch pipe 52.
  • the second branch pipe 6 is connected between the liquid inlet main pipe 1 and the liquid outlet main pipe 2, and the second branch pipe 6 includes a second liquid inlet branch pipe 61 and a second liquid outlet branch pipe 62.
  • the liquid inlet main pipe 1 is used for liquid inlet to provide cooling liquid to the first branch pipe 5 and the second branch pipe 6.
  • the liquid outlet main pipe 2 is used for liquid outlet, and the cooling liquid in the first branch pipe 5 and the second branch pipe 6 flows out through the liquid outlet main pipe 2.
  • the liquid inlet main pipe 1, the liquid outlet main pipe 2, the first branch pipe 5, and the second branch pipe 6 are all tubular structures, such as metal liquid guide pipes or plastic liquid guide pipes;
  • the battery module unit 3 is composed of battery cells to form a battery pack, or a battery cabinet, or a battery box, etc.
  • the battery module unit 3 can be a cabinet with multiple batteries and used to store electric energy, and the power module unit 4 is a cabinet with a power circuit and used to control the operation of the battery module unit 3;
  • the first branch pipe 5 is connected between the liquid inlet main pipe 1 and the liquid outlet main pipe 2, which means that one end of the first branch pipe 5 is in fluid communication with the liquid inlet main pipe 1, and the other end is in fluid communication with the liquid outlet main pipe 2.
  • the battery module unit 3 is connected in series between the first liquid inlet branch 51 and the first liquid outlet branch 52; that is, the battery module unit 3 is located in the cooling path between the first liquid inlet branch 51 and the first liquid outlet branch 52, so that the heat generated by the battery module unit 3 is removed by the cooling liquid flowing through the first liquid inlet branch 51 and the first liquid outlet branch 52, thereby achieving heat dissipation of the battery module unit 3.
  • the power module unit 4 is connected in series between the second liquid inlet branch 61 and the second liquid outlet branch 62; that is, the power module unit 4 is located in the cooling path between the second liquid inlet branch 61 and the second liquid outlet branch 62, so that the heat generated by the power module unit 4 is taken away by the coolant flowing through the second liquid inlet branch 61 and the second liquid outlet branch 62, thereby realizing the heat dissipation of the power module unit 4.
  • the energy storage system includes a liquid inlet main pipe 1, a liquid outlet main pipe 2, a first branch pipe 5, a second branch pipe 6, a battery module unit 3 and a power module unit 4, wherein the liquid inlet main pipe 1 and the liquid outlet main pipe 2 are arranged in parallel with each other;
  • the first branch pipe 5 is connected between the liquid inlet main pipe 1 and the liquid outlet main pipe 2, and includes a first liquid inlet branch pipe 51 and a first liquid outlet branch pipe 52;
  • the second branch pipe 6 is connected between the liquid inlet main pipe 1 and the liquid outlet main pipe 2, and includes a second liquid inlet branch pipe 61 and a second liquid outlet branch pipe 62;
  • the battery module unit 3 is connected in series between the first liquid inlet branch pipe 51 and the first liquid outlet branch pipe 52;
  • the power module unit 4 is connected in series between the second liquid inlet branch pipe 61 and the second liquid outlet branch pipe 62;
  • the design of the power module unit 4 and the battery module unit 3 sharing a cooling pipeline is realized, the cooling pipeline is simplified, and the
  • the inventors of this application have found through long-term research that the power module unit and the battery module unit have different cooling requirements.
  • the battery module unit generally requires an inlet and outlet water temperature difference of ⁇ 3°C and a design flow rate of 50-60L/min.
  • the power module unit generally requires an inlet and outlet water temperature difference of 8-10°C and a design flow rate of 6-8L/min.
  • a single energy storage submodule generally consists of a power module unit and multiple battery module units, and the energy storage system is composed of multiple energy storage submodules.
  • the inventors of the present application discovered that the cooling pipeline design of the traditional energy storage system/MMC flexible DC converter valve all considers the cooling of the same cooling component separately, so the existing cooling pipeline design does not fully consider the uniform flow distribution between different cooling components; in addition, in order to discharge the gas in the cooling pipeline, the traditional practice is to set an exhaust valve at the top of the water channel, but it cannot effectively discharge the gas inside the battery module unit.
  • This patent realizes flow balance of the battery cluster in the battery module unit by connecting a central liquid outlet pipe in series after the liquid outlet pipe of the battery module unit and adjusting the position of the central liquid outlet pipe in the liquid outlet pipe.
  • it cannot realize flow balance between different battery module units and is not fully designed according to the same-program cooling pipeline;
  • the inventor of the present application has made further improvements to the energy storage system by designing the same-program parallel water circuits for the power module unit and the battery module unit inside the energy storage submodule to achieve consistent length of the cooling pipeline path.
  • cooling pipelines with different pipe diameters are designed for the power module unit and the battery module unit, and by simulating and analyzing the flow-resistance characteristics of the power module unit and the battery module unit branches and testing them, resistance elements are added to different cooling branches to further reduce the flow non-uniformity between different branches.
  • the coolant enters from the lower part of the power module unit/battery module unit, and flows out from the upper part of the power module unit/battery module unit after being heated, so that the gas in the cooling pipeline inside the power module unit and the battery module unit can be effectively discharged.
  • the first branch pipe 5 and the second branch pipe 6 are arranged in the same program.
  • the same program arrangement means that the cooling branch corresponding to each battery module unit 3: the first liquid inlet branch pipe 51 ⁇ battery module unit 3 ⁇ the first liquid outlet branch pipe 52, the total length of the cooling branch path is the same, so that under the condition of the same pipe diameter, the flow in the cooling branch corresponding to each battery module unit 3 can be basically consistent, and the flow between different battery module units 3 can be evenly distributed.
  • the cooling branch corresponding to the power module unit 4 the second liquid inlet branch pipe 61 ⁇ power module unit 4 ⁇ the second liquid outlet branch pipe 62, the total length of the cooling branch path corresponding to each of the above-mentioned battery module units 3 is also the same. If the resistance loss through each meter of the branch is close to equal, the resistance of each pipeline in the system can be kept balanced without adjustment. Therefore, compared with other different program liquid cooling systems, the flow distribution of the same program liquid cooling system has better balance.
  • the cooling branch of the battery module unit 3 is composed of the first liquid inlet branch 51, the battery module unit 3 and the first liquid outlet branch 52.
  • the cooling branch of the power module unit 4 is composed of the second liquid inlet branch 61, the power module unit 4 and the second liquid outlet branch 62.
  • the first branch pipe 5 and the second branch pipe 6 are arranged in the same way; in this way, the path lengths of the cooling pipes corresponding to the first branch pipe 5 and the second branch pipe 6 can be made consistent, that is, the battery module unit 3 connected in series between the first liquid inlet branch pipe 51 and the first liquid outlet branch pipe 52 and the power module unit 4 connected in series between the second liquid inlet branch pipe 61 and the second liquid outlet branch pipe 62 correspond to cooling pipes of the same length respectively, so that when the pipe diameters are the same, the flow rates in the cooling pipes of the battery module unit 3 and the power module unit 4 can be ensured to be basically consistent, thereby achieving uniform distribution of the flow rates between different battery module units 3.
  • the first branch pipe 5 and the second branch pipe 6 have different pipe diameters.
  • the pipe diameter refers to the inner diameter of the corresponding branch pipe.
  • the pipe diameter is the inner diameter of the circular pipe.
  • the first liquid inlet branch pipe 51 and the first liquid outlet branch pipe 52 of the same first branch pipe 5 have the same pipe diameter
  • the second liquid inlet branch pipe 61 and the second liquid outlet branch pipe 62 of the same second branch pipe 6 have the same pipe diameter.
  • the flow rate of the coolant required by the power module unit 4 is different from the flow rate of the coolant required by the battery module unit 3 (about 10 times)
  • a branch pipe with a larger pipe diameter or a smaller pipe diameter can be selected according to the actual situation to ensure that the flow resistance of the coolant flowing through the first branch pipe 5 and the second branch pipe 6 is the same, thereby achieving accurate distribution of the flow of the power module unit 4 and the battery module unit 3.
  • the flow rate of the coolant in the first branch pipe 5 and the second branch pipe 6 can be between 1.2m/s-2.5m/s.
  • FIG. 4 is a schematic diagram of the position of a resistance element 7 in a single-branch cooling pipeline; the energy storage system further includes a resistance element 7; the resistance element 7 is disposed in one or more of the first liquid inlet branch 51, the first liquid outlet branch 52, the second liquid inlet branch 61, and the second liquid outlet branch 62, and is used to adjust the resistance of the flow in the corresponding branch to control the flow of the coolant in the corresponding branch.
  • the resistance element 7 can be a tubular structure with openings at both ends, the tubular structure is specifically sleeved in the corresponding branch, and the outer diameter of the tubular structure is the same as the inner diameter of the corresponding branch, and the inner diameter and specific length of the tubular structure can be selected and set according to actual resistance requirements.
  • the resistance element 7 is sleeved in the first liquid inlet branch 51, then the outer diameter of the resistance element 7 is the same as the inner diameter of the first liquid inlet branch 51, and the inner diameter and length of the resistance element 7 are not limited.
  • the material of the resistance element 7 can be the same as the material of the corresponding branch. same.
  • the resistance element 7 can be used to control the flow rate through the corresponding branch, thereby achieving precise distribution of the flow between the power module unit 4 and the battery module unit 3, and achieving uniform distribution of the flow between different battery module units 3.
  • the resistance of the design flow of the power module unit 4 is greater than the resistance of the design flow of the battery module unit 3, and the resistance element 7 is arranged in the tube of the first liquid inlet branch 51 and/or the first liquid outlet branch 52; or the resistance of the design flow of the power module unit 4 is less than the resistance of the design flow of the battery module unit 3, and the resistance element 7 is arranged in the tube of the second liquid inlet branch 61 and/or the second liquid outlet branch 62.
  • the resistance element 7 can be selectively set in the first liquid inlet branch 51, or in the tube of the first liquid outlet branch 52; or simultaneously set in the tubes of the first liquid inlet branch 51 and the first liquid outlet branch 52; similarly, when the resistance of the design flow of the power module unit 4 is less than the resistance of the design flow of the battery module unit 3, the resistance element 7 can also be selectively set in the second liquid inlet branch 61, or in the tube of the second liquid outlet branch 62; or simultaneously set in the tubes of the second liquid inlet branch 61 and the second liquid outlet branch 62.
  • the resistance element 7 when the resistance of the design flow of the power module unit 4 is greater than the resistance of the design flow of the battery module unit 3, the resistance element 7 is set in the first liquid inlet branch 51 and/or the first liquid outlet branch 52.
  • the resistance element 7 can also be used to increase the resistance of the design flow of the battery module unit 3 connected in series between the first liquid inlet branch 51 and the first liquid outlet branch 52, so that the resistance of the design flow of the power module unit 4 and the resistance of the design flow of the battery module unit 3 tend to be the same, thereby realizing the precise distribution of the flow of the power module unit 4 and the battery module unit 3.
  • the resistance element 7 is disposed in the second liquid inlet branch 61 and/or the second liquid outlet branch 62, and the resistance element 7 can be utilized to also increase the resistance to the design flow of the power module unit 4 connected in series between the second liquid inlet branch 61 and the second liquid outlet branch 62, so that the resistance to the design flow of the power module unit 4 and the resistance to the design flow of the battery module unit 3 tend to be the same, thereby achieving uniform flow distribution between different battery module units 3 and precise distribution of the flow of the power module unit 4 and the battery module unit 3.
  • a first flow channel is provided between the first liquid inlet branch pipe 51 and the first liquid outlet branch pipe 52.
  • the battery module unit 3 is connected to the first flow channel for heat exchange
  • a second flow channel is provided between the second liquid inlet branch pipe 61 and the second liquid outlet branch pipe 62
  • the power module unit 4 is connected to the second flow channel for heat exchange
  • the flow resistance of the first flow channel and the second flow channel are different.
  • the heat exchange connection refers to the connection relationship between the device and the flow channel, which can realize the heat exchange between the two, such as the device contacts the heat exchange plate, the flow channel is set in the heat exchange plate, or the flow channel is in the heat exchange tube, the heat exchange tube contacts the device, etc.
  • the first flow channel and the second flow channel are designed such as the circuitous length, cross-sectional area, flow path, etc. to achieve different flow resistances and uniform flow of the power module unit 4 and the battery module unit 3.
  • FIG. 5 is a simplified structural diagram of a battery module unit; the battery module unit 3 includes a liquid supply pipe 31 , a liquid return pipe 32 , a plurality of branch pipes (not shown) and a plurality of batteries 33 .
  • the liquid supply pipe 31 and the liquid return pipe 32 are arranged at intervals along the first direction Y.
  • the first direction Y can be a vertical direction, and the embodiment of the present application takes this as an example. Of course, the first direction Y can also be inclined at a preset angle to the vertical direction.
  • the bottom end of the liquid supply pipe 31 i.e., below the orientation shown in Figure 5 is connected to the first liquid inlet branch pipe 51 to connect the liquid inlet main pipe 1 through the first liquid inlet branch pipe 51.
  • the top end of the liquid return pipe 32 i.e., above the orientation shown in Figure 5) is connected to the first liquid outlet branch pipe 52 to connect the liquid outlet main pipe 2 through the first liquid outlet branch pipe 52.
  • the cooling branch corresponding to the battery module unit 3 is specifically composed of a first liquid inlet branch pipe 51, a liquid supply pipe 31, a plurality of direct current pipes, a liquid return pipe 32, and a first liquid outlet branch pipe 52.
  • Multiple branch pipes are arranged at intervals in the first direction Y and are respectively connected between the liquid supply pipe 31 and the liquid return pipe 32; and the multiple branch pipes are arranged in the same way, that is, the lengths of the flow paths of the coolant corresponding to the multiple branch pipes are consistent.
  • Multiple batteries 33 are stacked in the first direction Y; and each battery 33 is connected in series to a branch pipe.
  • the energy storage system further includes a valve tower (not shown); the valve tower includes a multi-layer bracket, each of which is provided with an energy storage submodule, a liquid inlet main pipe 1, a liquid outlet main pipe 2, a plurality of first branch pipes 5 and a second branch pipe 6; each energy storage submodule includes a power module unit 4 and a plurality of battery modules Unit 3, and multiple battery module units 3 are arranged one by one with multiple first branch pipes 5, and power module units 4 are arranged correspondingly with second branch pipes 6.
  • the valve tower can be suspended or floor-standing, that is, installed on the ground.
  • the structure shown in Figure 1 is an energy storage submodule.
  • the structure shown in Figure 6 is three energy storage submodules corresponding to the three-layer brackets.
  • the three-layer bracket can be installed on the ground through insulators.
  • the energy storage system is a valve tower energy storage system, so that each energy storage sub-module on the multi-layer bracket of the valve tower can achieve uniform distribution of the flow of different battery module units 3, and ensure that the gas in the internal cooling branches of the battery module units 3 and the power module units 4 is effectively discharged.
  • the liquid inlet main pipe 1 is located on the side of the battery module unit 3 and the power module unit 4 close to the ground; that is, regardless of whether the battery module unit 3 and the power module unit 4 are side by side or at the same height, the liquid inlet main pipe 1 is located on the same side of the battery module unit 3 and the power module unit 4, and is located on the side close to the ground.
  • the liquid outlet main pipe 2 is located on the side of the battery module unit 3 and the power module unit 4 away from the ground; that is, regardless of whether the battery module unit 3 and the power module unit 4 are side by side or at the same height, the liquid outlet main pipe 2 is located on the same side of the battery module unit 3 and the power module unit 4, and is located on the side away from the ground.
  • the height at which the battery module unit 3 and the power module unit 4 are located is higher than the height at which the ground is located.
  • the cooling branch of the battery module unit 3 takes in water from the side of the battery module unit 3 close to the ground, and takes out water from the side of the battery module unit 3 far from the ground.
  • the water inlet and outlet method of the power module unit 4 is the same as that of the battery module unit 3, so as to realize the cooling liquid inlet and outlet from the bottom to the top of the cooling branch of the battery module unit 3 and the cooling branch of the power module unit 4.
  • the liquid inlet main pipe 1 is located on the side of the battery module unit 3 and the power module unit 4 close to the ground
  • the liquid outlet main pipe 2 is located on the side of the battery module unit 3 and the power module unit 4 away from the ground, so that the coolant of each cooling branch in the cooling pipeline enters from the bottom and exits from the top, which can ensure that the gas in the cooling branch inside the battery module unit 3 and the power module unit 4 is effectively discharged without the need for a separate exhaust valve, thereby saving costs.
  • the cooling branch of the battery module unit 3 may also take in water from the side of the battery module unit 3 away from the ground, and discharge water from the side of the battery module unit 3 close to the ground, that is, in from the top and out from the bottom; of course, the cooling branch of the battery module unit 3 may also take in water from the left side of the battery module unit 3,
  • the water can be discharged from the right side, or the water can be inletted from the right side and discharged from the left side.
  • the water inlet and outlet of the power module unit 4 is similar to that of the battery module unit 3.
  • the water can also be inletted from the top and discharged from the bottom, or the water can be inletted from the left side and discharged from the right side; or the water can be inletted from the right side and discharged from the left side.
  • the energy storage system also includes a liquid inlet main pipe 81 and a liquid outlet main pipe 82.
  • the liquid inlet main pipe 81 and the liquid outlet main pipe 82 are respectively arranged on the valve tower, and both extend vertically along the height direction Z of the valve tower.
  • the liquid inlet main pipe 81 is respectively connected to the liquid inlet mother pipe 1 on each layer of the bracket to uniformly supply liquid to the liquid inlet mother pipe 1 on each layer of the bracket.
  • the liquid outlet main pipe 82 is respectively connected to the liquid outlet mother pipe 2 on each layer of the bracket; so that the liquid in the liquid outlet mother pipe 2 on each layer of the bracket flows out through the liquid outlet main pipe 82.
  • the height of one end of the liquid outlet main pipe 82 away from the ground is greater than the height of the liquid outlet main pipe 2 corresponding to the energy storage submodule at the highest level.
  • the liquid inlet main pipe 81 is connected to the liquid inlet mother pipe 1 on each layer of the bracket, and the liquid outlet main pipe 82 is connected to the liquid outlet mother pipe 2 on each layer of the bracket, and the height of the end of the liquid outlet main pipe 82 away from the ground is greater than the height of the liquid outlet mother pipe 2 corresponding to the energy storage sub-module on the highest layer; it can effectively ensure that the gas in the internal cooling circuit of the battery module unit 3 and the power module unit 4 in each energy storage sub-module on each layer of the bracket of the valve tower is effectively discharged.
  • an exhaust valve 9 is further provided at one end of the liquid outlet main pipe 82 away from the ground. Because the outlet temperature of the liquid outlet main pipe 82 is high, based on Dalton's law of partial pressure, by adding an exhaust valve 9 at one end of the liquid outlet main pipe 82 away from the ground, it is more conducive to the discharge of gas in the cooling pipeline.
  • FIG 7 is a front view of the liquid flow direction of the energy storage system provided by another embodiment of the present application.
  • the energy storage system also includes a container; a power module unit 4 and a plurality of battery module units 3 are arranged in the container; the liquid inlet main pipe 1 is arranged on the bottom wall of the container, the liquid outlet main pipe 2 is arranged on the top wall of the container and an exhaust valve 9 is arranged at one end; the plurality of battery module units 3 are arranged one by one with the plurality of first branch pipes.
  • the energy storage system of Figure 7 is a container-type energy storage system. When in use, the container is placed on the ground, a support platform or a vehicle without being arranged on a valve tower.
  • the container can be an existing energy storage container.
  • This embodiment realizes the application of the energy storage system in the field of container-type traditional low-pressure energy storage, and by setting the liquid inlet main pipe 1 on the bottom wall of the container and the liquid outlet main pipe 2 on the top wall of the container, the cooling pipeline is realized to have water inlet from the bottom side of the container and outlet from the top side, so that the flow path of the cooling pipelines of different battery module units 3 in the container can be unified.
  • the gas in the battery module unit 3 can be effectively discharged, so as to achieve uniform distribution of flow in different battery module units 3 and effective exhaust; in addition, the gas inside the cooling medium is discharged, which improves the heat exchange efficiency of the cold plate in the battery 33 and improves the operating efficiency of the battery 33.

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Abstract

本申请提供一种储能系统。该储能系统包括：进液母管和出液母管；第一支管，连接在所述进液母管和所述出液母管之间，且包括第一进液支管和第一出液支管；第二支管，连接在所述进液母管和所述出液母管之间，且包括第二进液支管和第二出液支管；电池模块单元，串接在所述第一进液支管和所述第一出液支管之间；功率模块单元，串接在所述第二进液支管和所述第二出液支管之间。该储能系统能够实现功率模块单元与电池模块单元共用冷却管路的设计，简化了冷却管路，降低了成本。

Description

储能系统
相关申请的交叉引用
本申请基于2023年02月10日提交的中国专利申请2023100997654主张其优先权，此处通过参照引入其全部的记载内容。
【技术领域】
本发明涉及散热技术领域，尤其涉及一种储能系统。
【背景技术】
储能系统，如，高压直挂储能阀通常由多个储能子模块组成，每一储能子模块由功率模块单元及电池模块单元组成；在运行过程中，功率模块单元及电池模块单元会产生热量，需要设计冷却管路将各自产生的热量带走。电池模块单元，由电芯组成电池包，或者电池柜，或电池箱等。然而，现有储能系统，其冷却管路复杂，成本较高。
【发明内容】
本申请提供的储能系统，主要解决的技术问题是现有储能系统，其冷却管路复杂，成本较高。
为解决上述技术问题，本申请采用的一个技术方案是：提供一种储能系统。该储能系统包括：进液母管和出液母管；第一支管，连接在所述进液母管和所述出液母管之间，且包括第一进液支管和第一出液支管；第二支管，连接在所述进液母管和所述出液母管之间，且包括第二进液支管和第二出液支管；电池模块单元，串接在所述第一进液支管和所述第一出液支管之间；功率模块单元，串接在所述第二进液支管和所述第二出液支管之间。
上述提供的储能系统，包括进液母管、出液母管、第一支管、第二支管、电池模块单元以及功率模块单元，其中，第一支管连接在所述进液母管和所述出液母管之间，且包括第一进液支管和第一出液支管；第二支管连接在所述进液母管和所述出液母管之间，且包括第二进液支管和第二出液支管；电池模块单元串接在所述第一进液支管和所述第一出液支管之间；功率模块单元串接在 所述第二进液支管和所述第二出液支管之间；实现了功率模块单元与电池模块单元共用冷却管路的设计，简化了冷却管路，降低了成本。
在一些实施例中，所述第一支管和所述第二支管采取了同程式布置。
上述方案，可使第一支管和第二支管对应的冷却管路的路径长度一致，也即串联在第一进液支管和所述第一出液支管之间的电池模块单元和串接在所述第二进液支管和所述第二出液支管之间功率模块单元分别对应相同长度的冷却管路，从而在管径相同的情况下，可以保证电池模块单元和功率模块单元中的冷却管路中的流量基本一致，实现不同电池模块单元之间流量的均匀分配。
在一些实施例中，所述第一支管与所述第二支管具有不同的管径。
上述方案，通过使第一支管和第二支管具有不同管径，以保证流过第一支管和第二支管内的冷却液的流阻相同，从而实现功率模块单元与电池模块单元的流量的精准分配。
在一些实施例中，还包括阻力元件；所述阻力元件设置于所述第一进液支管、所述第一出液支管、所述第二进液支管和所述第二出液支管中的一个或多个的管内。
上述方案，通过在所述第一进液支管、所述第一出液支管、所述第二进液支管和所述第二出液支管中的一个或多个的管内设置阻力元件，可以利用阻力元件控制通过对应支管内的流量大小，从而实现功率模块单元与电池模块单元的流量的精准分配，并实现不同电池模块单元之间流量的均匀分配。
在一些实施例中，所述功率模块单元的设计流量的阻力大于所述电池模块单元的设计流量的阻力，所述阻力元件设置于所述第一进液支管和/或所述第一出液支管的管内；或
所述功率模块单元的设计流量的阻力小于所述电池模块单元的设计流量的阻力，所述阻力元件设置于所述第二进液支管和/或所述第二出液支管的管内。
上述方案，在所述功率模块单元的设计流量的阻力大于所述电池模块单元的设计流量的阻力，将所述阻力元件设置于所述第一进液支管和/或所述第一出液支管的管内，可以利用阻力元件也增大串联在第一进液支管和所述第一出液支管之间的电池模块单元的设计流量的阻力，使功率模块单元的设计流量的阻力和电池模块单元的设计流量的阻力趋于相同，进而实现功率模块单元与电池 模块单元的流量的精准分配。或者，在所述功率模块单元的设计流量的阻力小于所述电池模块单元的设计流量的阻力，所述阻力元件设置于所述第二进液支管和/或所述第二出液支管的管内，可以利用阻力元件也增大串联在串接在所述第二进液支管和所述第二出液支管之间的功率模块单元的设计流量的阻力，使功率模块单元的设计流量的阻力和电池模块单元的设计流量的阻力趋于相同，进而实现不同电池模块单元之间流量均匀分布，以及功率模块单元与电池模块单元的流量的精准分配。
在一些实施例中，所述进液母管位于所述电池模块单元和所述功率模块单元这两者靠近地面的一侧，所述出液母管位于所述电池模块单元和所述功率模块单元这两者远离地面的一侧。
上述方案，采用冷却液下进上出的设置方式，可以保证电池模块单元和功率模块单元内部冷却支路中的气体被有效排出，无需另设排气阀，节约成本。
在一些实施例中，所述电池模块单元包括沿第一方向间隔设置的供液管和回液管，在第一方向间隔设置且连接在所述供液管和所述回液管之间的多个支流管，以及多个在第一方向层叠设置的电池；每个所述电池串连在一个所述支流管上；所述供液管的底端连接所述进液母管，所述回液管的顶端连接所述出液母管；多个所述支流管采取了同程式布置。
上述方案，即可保证电池模块单元内部冷却管路中的气体被有效排出；且通过进一步使多个所述支流管采取了同程式布置，可以有效保证每一电池模块单元内部的冷却管路路径的长度一致，从而保证不同电池模块单元之间流量的均匀分配。
在一些实施例中，还包括阀塔；所述阀塔包括多层支架，每层所述支架上设置一个储能子模块、一个所述进液母管、一个所述出液母管、多个所述第一支管和一个所述第二支管；每个所述储能子模块包括一个所述功率模块单元和多个所述电池模块单元，且多个所述电池模块单元与多个所述第一支管一一对应设置。
上述方案可以使该储能系统应用于阀塔式储能阀领域，以使阀塔的多层支架上的每一储能子模块均能实现不同电池模块单元流量的均匀分配，以及保证电池模块单元和功率模块单元内部冷却管路中的气体被有效排出。
在一些实施例中，还包括进液主管和出液主管；所述进液主管和所述出液主管设置于所述阀塔上，且沿着所述阀塔的高度方向延伸；所述进液主管分别连接每一层所述支架上的所述进液母管，所述出液主管分别连接每一层所述支架上的所述出液母管；所述出液主管远离地面的一端的高度大于最高层的所述储能子模块对应的所述出液母管的高度。
上述方案可以保证该阀塔的每层支架上的每一储能子模块中的电池模块单元和功率模块单元内部冷却管路中的气体被有效排出。
在一些实施例中，所述出液主管远离地面的一端还设置有排气阀。
上述方案，因为出液主管的出液温度高，基于道尔顿分压定律，通过增设排气阀，更有利于冷却管路中的气体排出。
在一些实施例中，还包括集装箱；一个所述功率模块单元和多个所述电池模块单元设置于所述集装箱内；所述进液母管设置于所述集装箱的底壁，所述出液母管设置于所述集装箱的顶壁且一端设置有排气阀；多个所述电池模块单元与多个所述第一支管一一对应设置。
上述方案，冷却管路从集装箱的下侧进水，上侧出水，可以实现集装箱内的不同电池模块单元的冷却管路流动路径一致，且由于上侧出水，并在集装箱的顶壁的一端设置有排气阀，可以有效将电池模块单元内的气体有效排出，实现不同电池模块单元内流量的均匀分布及有效排气；另外，冷却介质内部的气体排出，提高了电池内冷板的换热效率，提高了电池的运行效率。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
【附图说明】
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1是本申请一实施例提供的储能系统的液体流向的俯视图；
图2是进液母管侧三通结构示意图；
图3是出液母管侧三通结构示意图；
图4是单支路冷却管路中阻力元件的一位置示意图；
图5是电池模块单元的结构简图；
图6是本申请一实施例提供的储能系统的液体流向的正视图；
图7是本申请另一实施例提供的储能系统的液体流向的正视图。
附图标记说明
1-进液母管；2-出液母管；3-电池模块单元；31-供液管；32-回液管；33-
电池；4-功率模块单元；5-第一支管；51-第一进液支管；52-第一出液支管；6-第二支管；61-第二进液支管；62-第二出液支管；7-阻力元件；81-进液主管；82-出液主管；9-排气阀。
【具体实施方式】
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与 其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”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申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
新型高压直流直挂储能技术将VSC(voltage source converter，电压源型换流器)换流阀与直流储能阀集成，具有模块化程度高、经济效益好，运行可靠性高等优势。
新型高压交流直挂储能技术将功率模块与储能电池集成的高压交流直挂储能子模块，级联后接入交流电网，具有模块化程度高、经济效益好，运行可靠性高等优势。
新型高压直流直挂储能技术和新型高压交流直挂储能技术，取消通过变压器并到电网，可直接挂在高压电网上，电压等级如≥1KV，如±10KV，±35KV，±500KV，±800KV。
高压直挂储能阀由多个储能子模块组成，储能子模块由功率模块单元及电 池模块单元组成，在运行过程中，功率模块单元及电池模块单元会产生热量，需要设计冷却管路将产生的热量带走。相关技术中，功率模块单元及电池模块单元通常分别连通一个冷却管路，以通过各自对应的冷却管路带走热量。然而，该方案对应的冷却管路复杂，成本较高。
基于此，本申请发明人提出了一种储能系统，通过使电池模块单元和功率模块单元连接同一个进液母管和同一个出液母管，实现了功率模块单元与电池模块单元共用冷却管路的设计，简化了冷却管路，降低了成本。
下面结合附图和实施例对本申请进行详细的说明。
请参阅图1至图3，图1是本申请一实施例提供的储能系统的液体流向的俯视图；图2是进液母管侧三通结构示意图；图3是出液母管侧三通结构示意图；在本实施例中，提供一种储能系统。该储能系统包括进液母管1、出液母管2、电池模块单元3以及功率模块单元4、第一支管5、第二支管6。
其中，如图1所示，进液母管1和出液母管2可以相互平行设置；第一支管5连接在进液母管1和出液母管2之间，且第一支管5包括第一进液支管51和第一出液支管52。第二支管6连接在进液母管1和出液母管2之间，且第二支管6包括第二进液支管61和第二出液支管62。在该实施例中，如图2所示，进液母管1用于进液，以向第一支管5和第二支管6提供冷却液。如图3所示，出液母管2用于出液，第一支管5和第二支管6内的冷却液通过出液母管2流出。
本申请中，进液母管1、出液母管2、第一支管5、第二支管6均为管状结构，例如金属导液管或塑料导液管；电池模块单元3由电芯组成电池包，或者电池柜，或电池箱等。具体的，电池模块单元3可以为具有多个电池的柜体且用于存储电能，功率模块单元4为具有功率电路的柜体且用于控制电池模块单元3的工作；第一支管5连接在进液母管1和出液母管2之间是指，第一支管5的一端与进液母管1流体连通，另一端与出液母管2流体连通。
返回参阅图1，电池模块单元3串接在第一进液支管51和第一出液支管52之间；即，电池模块单元3位于第一进液支管51和第一出液支管52之间的冷却路径中，以通过流经第一进液支管51和第一出液支管52的冷却液带走电池模块单元3产生的热量，实现电池模块单元3的散热。
功率模块单元4串接在第二进液支管61和第二出液支管62之间；即，功率模块单元4位于第二进液支管61和第二出液支管62之间的冷却路径中，以通过流经第二进液支管61和第二出液支管62的冷却液带走功率模块单元4产生的热量，实现功率模块单元4的散热。
上述提供的储能系统，包括进液母管1、出液母管2、第一支管5、第二支管6、电池模块单元3以及功率模块单元4，其中，进液母管1和出液母管2相互平行设置；第一支管5连接在进液母管1和出液母管2之间，且包括第一进液支管51和第一出液支管52；第二支管6连接在进液母管1和出液母管2之间，且包括第二进液支管61和第二出液支管62；电池模块单元3串接在第一进液支管51和第一出液支管52之间；功率模块单元4串接在第二进液支管61和第二出液支管62之间；实现了功率模块单元4与电池模块单元3共用冷却管路的设计，简化了冷却管路，降低了成本。
然而，经本申请发明人长期研究发现：功率模块单元及电池模块单元对于冷却的需求特性不同；以100MW/200MWh为例，电池模块单元一般要求进出水温差≤3℃，设计流量50-60L/min，功率模块单元一般要求进出水温差在8-10℃，设计流量6-8L/min，且单个储能子模块内一般由一个功率模块单元及多个电池模块单元组成，储能系统又由多个储能子模块组成。因此，在实现功率模块单元4与电池模块单元3共用冷却管路的设计的同时，如何进行储能系统的冷却管路设计，使功率模块单元及电池模块单元的流量精准分配、提高不同电池模块单元的流量均匀性及有效排出冷却管路中的气体，存在较大的设计挑战。
本申请发明人在研发过程中发现：传统储能系统/MMC柔直换流阀冷却管路设计均是单独考虑同一种冷却部件的冷却，因此现有冷却管路设计并未充分考虑不同冷却部件间的流量均匀分配；此外，为了排出冷却管路中的气体，传统做法是在水路顶部设置排气阀，但并不能有效排出电池模块单元内部的气体。
同时，本申请发明人在研究过程中进一步发现：相关技术中，如专利号为：202210542237.7的中国专利，公开了一种液冷系统和储能集装箱，该专利提供的液冷系统和储能集装箱虽然能够均衡各冷却单元分配到的流量，避免储能集装箱内部的温差过大。然而，该专利仍存在以下三方面问题：
(1)仅对电池模组单元冷却管路布置方案进行了说明，并未考虑功率模块单元的冷却管路设计及如何进行流量匹配；
(2)该专利通过在电池模块单元出液管后再串联中置出液管，通过调整中置出液管在出液管的位置来实现电池模块单元内电池簇的流量均衡，不能实现不同电池模块单元之间的流量均衡，且未充分按照同程式冷却管路进行设计；
(3)该专利冷却管路设计并未考虑如何将冷却管路中的气体进行有效排出，因此会存在冷却管路中的换热元件内部存在气体，影响换热效果。
基于上述考虑，本申请发明人对该储能系统做了进一步改进，通过对储能子模块内部的功率模块单元及电池模块单元进行同程式并联水路设计，实现冷却管路路径的长度一致。另外，基于功率模块单元及电池模块单元的冷却流量设计需求，对功率模块单元及电池模块单元设计不同管径的冷却管路，并通过对功率模块单元及电池模块单元支路的流量-流阻特性进行仿真分析及测试，在不同冷却支路上添加阻力元件来实现进一步降低不同支路间的流量不均匀性。此外，通过调整子模块进出水管的位置，使冷却液从功率模块单元/电池模块单元下部进入，被加热后从功率模块单元/电池模块单元上部流出，即可有效排出功率模块单元和电池模块单元内部冷却管路中的气体。通过上述方案，在流动路径上一致，在水冷管径上优化设计及添加阻力元件消除流阻差异，并通过实现储能子模块下进水上出水的方式，最终实现储能子模块内功率模块单元与电池模块单元冷却管路共用设计、流量精准分配及冷却管路有效排气。
在一个实施例中，结合图1，第一支管5和第二支管6采取了同程式布置。同程式布置，即，每一电池模块单元3对应的冷却支路：第一进液支管51→电池模块单元3→第一出液支管52，其冷却支路的路径总长度均相同，从而在管径相同的情况下，可以保证各个电池模块单元3对应的冷却支路中的流量基本一致，实现不同电池模块单元3之间流量的均匀分配。同时，功率模块单元4对应的冷却支路：第二进液支管61→功率模块单元4→第二出液支管62，与上述每一电池模块单元3对应的冷却支路的路径总长度也相同，如果通过每米长支路的阻力损失接近相等，则系统中各管路的阻力不需调节即可保持平衡。因此，相较于其他异程式液冷系统，同程式液冷系统的流量分配具有较好的均衡性。
在具体实施例中，电池模块单元3的冷却支路由第一进液支管51、电池模块单元3及第一出液支管52组成。功率模块单元4的冷却支路由第二进液支管61、功率模块单元4及第二出液支管62组成。
上述方案，第一支管5和第二支管6采取了同程式布置；如此，可使第一支管5和第二支管6对应的冷却管路的路径长度一致，也即串联在第一进液支管51和第一出液支管52之间的电池模块单元3和串接在第二进液支管61和第二出液支管62之间功率模块单元4分别对应相同长度的冷却管路，从而在管径相同的情况下，可以保证电池模块单元3和功率模块单元4中的冷却管路中的流量基本一致，实现不同电池模块单元3之间流量的均匀分配。
在一些实施例中，第一支管5与第二支管6具有不同的管径。其中，管径指对应支管的内径。在第一支管5和第二支管6分别为圆形管时，管径即圆形管的内径。具体的，同一个第一支管5的第一进液支管51和第一出液支管52的管径相同，同一个第二支管6的第二进液支管61和第二出液支管62的管径相同。
该实施例中，通过使第一支管5和第二支管6具有不同管径，这样即使功率模块单元4所需冷却液的流量与电池模块单元3所需冷却液的流量存在差异(约10倍关系)，也可以根据实际情况选择使用较大管径或较小管径的支管，以保证流过第一支管5和第二支管6内的冷却液的流阻相同，从而实现功率模块单元4与电池模块单元3的流量的精准分配。具体的，第一支管5和第二支管6内的冷却液的流速可以1.2m/s-2.5m/s之间。
在一些实施例中，参见图4，图4是单支路冷却管路中阻力元件7的一位置示意图；该储能系统还包括阻力元件7；阻力元件7设置于第一进液支管51、第一出液支管52、第二进液支管61和第二出液支管62中的一个或多个的管内，用于调节对应支管内的流量的阻力大小，以控制对应支管内的冷却液的流量大小。其中，阻力元件7可以是两端开口的管状结构，该管状结构具体套设于对应的支管内，且该管状结构的外径与对应支管的内径相同，该管状结构的内径以及具体长度可根据实际阻力需求等进行选择设置。例如，阻力元件7套设于第一进液支管51内，则阻力元件7的外径与第一进液支管51的内径相同，阻力元件7的内径及长度不限。具体的，阻力元件7的材质可与对应支管的材质 相同。
在该实施例中，通过在第一进液支管51、第一出液支管52、第二进液支管61和第二出液支管62中的一个或多个的管内设置阻力元件7，可以利用阻力元件7控制通过对应支管内的流量大小，从而实现功率模块单元4与电池模块单元3的流量的精准分配，并实现不同电池模块单元3之间流量的均匀分配。
在一些实施例中，功率模块单元4的设计流量的阻力大于电池模块单元3的设计流量的阻力，阻力元件7设置于第一进液支管51和/或第一出液支管52的管内；或功率模块单元4的设计流量的阻力小于电池模块单元3的设计流量的阻力，阻力元件7设置于第二进液支管61和/或第二出液支管62的管内。
具体的，在功率模块单元4的设计流量的阻力大于电池模块单元3的设计流量的阻力，阻力元件7可以选择性地设置于第一进液支管51内，或者设置于第一出液支管52的管内；或者同时设置于第一进液支管51和第一出液支管52的管内；同理，在功率模块单元4的设计流量的阻力小于电池模块单元3的设计流量的阻力，阻力元件7也可以选择性地设置于第二进液支管61内，或者设置于第二出液支管62的管内；或者同时设置于第二进液支管61和第二出液支管62的管内。
在该实施例中，在功率模块单元4的设计流量的阻力大于电池模块单元3的设计流量的阻力，将阻力元件7设置于第一进液支管51和/或第一出液支管52的管内，可以利用阻力元件7也增大串联在第一进液支管51和第一出液支管52之间的电池模块单元3的设计流量的阻力，使功率模块单元4的设计流量的阻力和电池模块单元3的设计流量的阻力趋于相同，进而实现功率模块单元4与电池模块单元3的流量的精准分配。或者，在功率模块单元4的设计流量的阻力小于电池模块单元3的设计流量的阻力，阻力元件7设置于第二进液支管61和/或第二出液支管62的管内，可以利用阻力元件7也增大串联在串接在第二进液支管61和第二出液支管62之间的功率模块单元4的设计流量的阻力，使功率模块单元4的设计流量的阻力和电池模块单元3的设计流量的阻力趋于相同，进而实现不同电池模块单元3之间流量均匀分布，以及功率模块单元4与电池模块单元3的流量的精准分配。
在一些实施例中，第一进液支管51和第一出液支管52之间设有第一流道， 电池模块单元3与第一流道换热连接，第二进液支管61和第二出液支管62之间设有第二流道，功率模块单元4与第二流道换热连接，第一流道和第二流道流阻不同。
换热连接是指器件与流道之间的连接关系，可以实现两者之间的换热，如器件接触换热板，流道设置在换热板内，或者流道在换热管内，换热管接触器件等等。第一流道和第二流道如迂回长度、截面积、流道路径等的设计，实现流阻的不同，均匀功率模块单元4和电池模块单元3的流量。
在一些实施例中，参阅图5，图5是电池模块单元的结构简图；电池模块单元3包括供液管31、回液管32、多个支流管(图未标示)以及多个电池33。
其中，供液管31和回液管32沿第一方向Y间隔设置。第一方向Y可以是竖直方向，本申请实施例以此为例。当然，第一方向Y也可与竖直方向呈预设角度倾斜设置。供液管31的底端(即图5所示方位的下方)与第一进液支管51连通，以通过第一进液支管51连接进液母管1。回液管32的顶端(即图5所示方位的上方)与第一出液支管52连通，以通过第一出液支管52连接出液母管2。在该实施例中，电池模块单元3对应的冷却支路具体由第一进液支管51、供液管31、多个直流管、回液管32、第一出液支管52组成。
多个支流管在第一方向Y间隔设置且分别连接在供液管31和回液管32之间；且多个支流管采取了同程式布置，即多个支流管对应的冷却液的流动路径的长度一致。多个电池33在第一方向Y层叠设置；且每个电池33串连在一个支流管上。
该实施例中，通过使每一电池模块单元3的供液管31的底端连接进液母管1，回液管32的顶端连接出液母管2，能够保证电池模块单元3内部冷却管路中的气体被有效排出。同时，通过进一步使多个支流管采取了同程式布置，可以有效保证每一电池模块单元3内部的冷却支路的路径的长度一致，从而保证不同电池模块单元3之间流量的均匀分配。
在一些实施例中，参见图6，图6是本申请一实施例提供的储能系统的液体流向的正视图；该储能系统还包括阀塔(图未示)；阀塔包括多层支架，每层支架上设置一个储能子模块、一个进液母管1、一个出液母管2、多个第一支管5和一个第二支管6；每个储能子模块包括一个功率模块单元4和多个电池模块 单元3，且多个电池模块单元3与多个第一支管5一一对应设置，功率模块单元4与第二支管6对应设置。阀塔可以为悬挂式，也可以为落地式，即安装在地面。
可以理解，在该实施例中，图1所示结构为一个储能子模块。图6所示结构为三层支架分别对应的三个储能子模块。三层支架可以通过绝缘子安装在地面。
该实施例中，该储能系统为阀塔式储能系统，以使阀塔的多层支架上的每一储能子模块均能实现不同电池模块单元3流量的均匀分配，以及保证电池模块单元3和功率模块单元4内部冷却支路中的气体被有效排出。
在一些实施例中，请继续参阅图6，进液母管1位于电池模块单元3和功率模块单元4这两者靠近地面的一侧；即不论电池模块单元3和功率模块单元4是否并排或等高，进液母管1均位于电池模块单元3和功率模块单元4的同一侧，且位于靠近地面所在的一侧。出液母管2位于电池模块单元3和功率模块单元4这两者远离地面的一侧；即不论电池模块单元3和功率模块单元4是否并排或等高，出液母管2均位于电池模块单元3和功率模块单元4的同一侧，且位于远离地面所在的一侧。
可以理解，在竖直方向上，电池模块单元3和功率模块单元4所在位置的高度高于地面所在的高度。
也就是说，电池模块单元3的冷却支路自电池模块单元3靠近地面的一侧进水，自电池模块单元3远离地面的一侧出水。功率模块单元4的进出水方式同电池模块单元3的进出水方式；以实现电池模块单元3的冷却支路和功率模块单元4的冷却支路的冷却液的下进上出。
在该实施例中，通过使进液母管1位于电池模块单元3和功率模块单元4靠近地面的一侧，出液母管2位于电池模块单元3和功率模块单元4远离地面的一侧，从而实现该冷却管路中的每一冷却支路的冷却液下进上出，可以保证电池模块单元3和功率模块单元4内部冷却支路中的气体被有效排出，无需另设排气阀，节约了成本。
当然，在其它实施例中，电池模块单元3的冷却支路也可以自电池模块单元3远离地面的一侧进水，自电池模块单元3靠近地面的一侧出水，即上进下出；当然，电池模块单元3的冷却支路也可以自电池模块单元3的左侧进水， 右侧出水，或者右侧进水，左侧出水，本申请对此并不限定。功率模块单元4的进出水方式同电池模块单元3的进出水方式类似，也可以上进下出，或者左侧进水，右侧出水；或者右侧进水，左侧出水。
在一些实施例中，请继续参阅图6，该储能系统还包括进液主管81和出液主管82。其中，进液主管81和出液主管82分别设置于阀塔上，且均沿着阀塔的高度方向Z垂直延伸。具体的，进液主管81分别连接每一层支架上的进液母管1，以统一给每一层支架上的进液母管1供液。出液主管82分别连接每一层支架上的出液母管2；以使每一层支架上的出液母管2中的液体通过该出液主管82流出。
其中，如图6所示，出液主管82远离地面的一端的高度大于最高层的储能子模块对应的出液母管2的高度。
该实施例中，通过使进液主管81分别连接每一层支架上的进液母管1，出液主管82分别连接每一层支架上的出液母管2，且出液主管82远离地面的一端的高度大于最高层的储能子模块对应的出液母管2的高度；能够有效保证该阀塔的每层支架上的每一储能子模块中的电池模块单元3和功率模块单元4内部冷却内路中的气体被有效排出。
在一些实施例中，如图6所示，出液主管82远离地面的一端还设置有排气阀9。因为出液主管82的出液温度高，基于道尔顿分压定律，通过在出液主管82远离地面的一端增设排气阀9，更有利于冷却管路中的气体排出。
在一些实施例中，参见图7，图7是本申请另一实施例提供的储能系统的液体流向的正视图。该储能系统还包括集装箱；一个功率模块单元4和多个电池模块单元3设置于集装箱内；进液母管1设置于集装箱的底壁，出液母管2设置于集装箱的顶壁且一端设置有排气阀9；多个电池模块单元3与多个第一支管一一对应设置。图7的储能系统为集装箱式储能系统。使用时，将集装箱放置于地面、支撑台或车辆上，而无需设置于阀塔上。
其中，集装箱可以是现有储能集装箱。该实施例实现了该储能系统在集装箱式传统低压储能领域中的应用，并通过使进液母管1设置于集装箱的底壁，出液母管2设置于集装箱的顶壁，实现了冷却管路从集装箱的下侧进水，上侧出水，从而可以实现集装箱内的不同电池模块单元3的冷却管路的流动路径一 致，且由于上侧出水，并在集装箱的顶壁的一端设置有排气阀9，可以有效将电池模块单元3内的气体有效排出，实现不同电池模块单元3内流量的均匀分布及有效排气；另外，冷却介质内部的气体排出，提高了电池33内冷板的换热效率，提高了电池33的运行效率。
以上仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (12)

  1. 一种储能系统，包括：
    进液母管和出液母管；
    第一支管，连接在所述进液母管和所述出液母管之间，且包括第一进液支管和第一出液支管；
    第二支管，连接在所述进液母管和所述出液母管之间，且包括第二进液支管和第二出液支管；
    电池模块单元，串接在所述第一进液支管和所述第一出液支管之间；
    功率模块单元，串接在所述第二进液支管和所述第二出液支管之间。
  2. 根据权利要求1所述的储能系统，
    其中，所述第一支管和所述第二支管采取了同程式布置。
  3. 根据权利要求2所述的储能系统，其中，所述第一支管与所述第二支管具有不同的管径。
  4. 根据权利要求2或3所述的储能系统，其中，还包括阻力元件；所述阻力元件设置于所述第一进液支管、所述第一出液支管、所述第二进液支管和所述第二出液支管中的一个或多个的管内。
  5. 根据权利要求4所述的储能系统，其中，所述功率模块单元的设计流量的阻力大于所述电池模块单元的设计流量的阻力，所述阻力元件设置于所述第一进液支管和/或所述第一出液支管的管内；或
    所述功率模块单元的设计流量的阻力小于所述电池模块单元的设计流量的阻力，所述阻力元件设置于所述第二进液支管和/或所述第二出液支管的管内。
  6. 根据权利要求1所述的储能系统，其中，所述第一进液支管和所述第一出液支管之间设有第一流道，所述电池模块单元与所述第一流道换热连接，所述第二进液支管和所述第二出液支管之间设有第二流道，所述功率模块单元与所述第二流道换热连接，所述第一流道和所述第二流道流阻不同。
  7. 根据权利要求1-3任意一项所述的储能系统，其中，所述进液母管位于所述电池模块单元和所述功率模块单元这两者靠近地面的一侧，所述出液母管位于所述电池模块单元和所述功率模块单元这两者远离地面的一侧。
  8. 根据权利要求7所述的储能系统，其中，所述电池模块单元包括沿第一方向间隔设置的供液管和回液管，在所述第一方向间隔设置且连接在所述供液管和所述回液管之间的多个支流管，以及多个在第一方向层叠设置的电池；每个所述电池串连在一个所述支流管上；所述供液管的底端连接所述进液母管，所述回液管的顶端连接所述出液母管；多个所述支流管采取了同程式布置。
  9. 根据权利要求7或8所述的储能系统，其中，还包括阀塔；所述阀塔包括多层支架，每层所述支架上设置一个储能子模块、一个所述进液母管、一个所述出液母管、多个所述第一支管和一个所述第二支管；每个所述储能子模块包括一个所述功率模块单元和多个所述电池模块单元，且多个所述电池模块单元与多个所述第一支管一一对应设置。
  10. 根据权利要求9所述的储能系统，其中，还包括进液主管和出液主管；所述进液主管和所述出液主管设置于所述阀塔上，且沿着所述阀塔的高度方向延伸；所述进液主管分别连接每一层所述支架上的所述进液母管，所述出液主管分别连接每一层所述支架上的所述出液母管；所述出液主管远离地面的一端的高度大于最高层的所述储能子模块对应的所述出液母管的高度。
  11. 根据权利要求10所述的储能系统，其中，所述出液主管远离地面的一端还设置有排气阀。
  12. 根据权利要求7或8所述的储能系统，其中，还包括集装箱；一个所述功率模块单元和多个所述电池模块单元设置于所述集装箱内；所述进液母管设置于所述集装箱的底壁，所述出液母管设置于所述集装箱的顶壁且一端设置有排气阀；多个所述电池模块单元与多个所述第一支管一一对应设置。
PCT/CN2024/074733 2023-02-10 2024-01-30 储能系统 Ceased WO2024164886A1 (zh)

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