Power assembly and energy storage container thereof

Abstract

The application provides a power assembly and an energy storage container thereof. The power assembly comprises a bearing shell, a power distribution unit and at least two liquid-cooled energy storage converter units. The bearing shell surrounds a containing space, the at least two liquid-cooled energy storage converter units and the power distribution unit are arranged in the containing space, and the at least two liquid-cooled energy storage converter units are adjacent, and each liquid-cooled energy storage converter unit is electrically connected with the power distribution unit. The bearing shell is provided with a three-stage water inlet pipeline along a first side wall and a three-stage water outlet pipeline along a second side wall. Water inlets of the three-stage water inlet pipeline and water outlets of the three-stage water outlet pipeline are distributed on a third side wall of the bearing shell. Each liquid-cooled energy storage converter unit comprises a liquid-cooled water inlet and a liquid-cooled water outlet. Each liquid-cooled water inlet is connected with the three-stage water inlet pipeline, and each liquid-cooled water outlet is connected with the three-stage water outlet pipeline.

Description

Technical Field

[0001] This application relates to the field of new energy safety technology, and more specifically, to a power component and its energy storage container. Background Technology

[0002] With the rapid development of new energy storage technologies, the requirements for power density, integration, and heat dissipation reliability of energy storage systems are constantly increasing. As the core power conversion unit in an energy storage system, the performance of power components directly determines the system's operating efficiency, stability, and lifespan. In large-scale energy storage applications (such as energy storage containers), to meet higher power output demands, multiple energy storage converter units typically need to work collaboratively, along with a power distribution unit to distribute and regulate power. Therefore, how to efficiently integrate multiple energy storage converter units and power distribution units and ensure their stable operation has become a key issue in current power component design.

[0003] Energy storage converters generate a large amount of heat during operation. If this heat cannot be dissipated in time, the temperature of the internal components will rise, affecting conversion efficiency and even causing malfunctions. Currently, liquid cooling is widely used in the heat dissipation design of high-power energy storage converters due to its advantages such as high heat dissipation efficiency and uniform temperature control.

[0004] Currently, large-scale energy storage applications (such as energy storage containers) typically integrate a large number of power components. To achieve liquid cooling for these power components, the conventional liquid cooling pipeline layout involves placing the liquid cooling pipeline in the middle of all power components (e.g., at the center of the bottom of the energy storage container) and then branching it to form multiple branch pipelines to achieve liquid cooling pipeline arrangement for each power component. However, this method makes it difficult to maintain the liquid cooling pipeline in case of failure because it places the liquid cooling pipeline below the power components. Summary of the Invention

[0005] The purpose of this application is to provide a power component and its energy storage container to solve the problem of liquid cooling pipes in current energy storage containers.

[0006] In a first aspect, this application provides a power component, including a housing, a power distribution unit, and at least two liquid-cooled energy storage converter units; the housing forms an accommodating space, and the at least two liquid-cooled energy storage converter units and the power distribution unit are disposed within the accommodating space, with the at least two liquid-cooled energy storage converter units adjacent to each other, and each liquid-cooled energy storage converter unit being electrically connected to the power distribution unit; the housing has a three-stage water inlet pipe disposed along its first side wall and a three-stage water outlet pipe disposed along its second side wall; the inlets of the three-stage water inlet pipes and the outlets of the three-stage water outlet pipes are distributed on the third side wall of the housing; wherein, the third side wall represents the side wall of the housing furthest from the power distribution unit, and the third side wall is connected to the first side wall and the second side wall respectively, the first side wall and the second side wall being parallel to each other and disposed opposite to each other; wherein, each liquid-cooled energy storage converter unit includes a liquid-cooled water inlet and a liquid-cooled water outlet, each liquid-cooled water inlet being connected to the three-stage water inlet pipe, and each liquid-cooled water outlet being connected to the three-stage water outlet pipe.

[0007] The power components provided in this solution integrate the power distribution unit and at least two liquid-cooled energy storage converter units within the housing space of the supporting shell, thereby increasing the power density of the power components and adapting to the high power output requirements of large-scale energy storage containers. This also reduces the wiring length between units, lowers power loss, and improves conversion efficiency. Furthermore, the liquid cooling piping in this solution is arranged on the first and second side walls of the supporting shell, with the inlet and outlet concentrated on the third side wall. This allows the liquid cooling piping on the side walls of the supporting shell to achieve the liquid cooling effect for multiple liquid-cooled energy storage converter units within the supporting shell. Additionally, the concentration of the inlet and outlet on the third side wall simplifies the piping interface of the power components. All are located on one side of the power components. In this case, the liquid cooling pipeline layout on the side wall of the housing of a single power component achieves the liquid cooling effect of multiple liquid-cooled energy storage converter units inside it. For a collection of multiple power components, the third side wall of all power components can face the same direction. This allows the pipeline layout of multiple integrated power components to be located on the same side. Thus, the power components designed in this scheme achieve efficient liquid cooling heat dissipation while allowing the liquid cooling pipelines of large-scale energy storage containers to be laid on one side of the third side wall of multiple power components, thereby eliminating the need to lay them in the middle of all power components (e.g., in the center of the bottom of the energy storage container), improving the maintenance efficiency and convenience of the liquid cooling pipelines.

[0008] In an optional embodiment of the first aspect, at least two liquid-cooled energy storage converter units include a first liquid-cooled energy storage converter unit and a second energy storage converter unit; the second liquid-cooled energy storage converter unit is located between the first liquid-cooled energy storage converter unit and the power distribution unit.

[0009] In the above implementation, due to the limited internal width of the energy storage container, the standard size of the battery clusters adapted to the energy storage container under normal circumstances is a row-type battery cluster. Therefore, in order to perform electrical management on the battery clusters configured on both sides, this solution designs the power component to have at least two liquid-cooled energy storage converter units. In the case of performing electrical management on the standard-sized battery clusters configured on both sides, this avoids the power component being too wide to be installed in the energy storage container, or too narrow to waste the space of the energy storage container.

[0010] In an optional embodiment of the first aspect, the three-stage water inlet pipeline includes a first-stage and a second-stage water inlet pipeline, and the three-stage water outlet pipeline includes a first-stage and a second-stage water outlet pipeline; both the first-stage and second-stage water inlet pipelines are arranged along the first side wall of the supporting shell, and the first-stage water inlet pipeline is located below the second-stage water inlet pipeline; the liquid-cooled water inlet of the first liquid-cooled energy storage converter unit is connected to the first-stage water inlet pipeline, and the liquid-cooled water inlet of the second liquid-cooled energy storage converter unit is connected to the second-stage water inlet pipeline; both the first-stage and second-stage water outlet pipelines are arranged along the second side wall of the supporting shell, and the first-stage water outlet pipeline is located below the second-stage water outlet pipeline; the liquid-cooled water outlet of the first liquid-cooled energy storage converter unit is connected to the first-stage water outlet pipeline, and the liquid-cooled water outlet of the second liquid-cooled energy storage converter unit is connected to the second-stage water outlet pipeline.

[0011] In the above implementation scheme, each liquid-cooled energy storage converter unit is designed with an independent liquid-cooled branch. The coolant flow rate can be adjusted as needed to adapt to the heat dissipation differences of different units, avoid insufficient or excessive heat dissipation in some units, and improve heat dissipation uniformity. At the same time, the branch is designed independently, so a fault in a single pipeline branch only affects the corresponding liquid-cooled energy storage converter unit, while the other units can dissipate heat normally. This avoids the failure of the entire power component's heat dissipation due to a single pipeline fault, improves fault tolerance, and the pipelines on the same side are arranged in layers, without crossover or messy problems, improving the regularity of pipeline layout and facilitating quick location of the faulty branch during subsequent pipeline maintenance.

[0012] In an optional embodiment of the first aspect, the three-stage water inlet pipeline includes a three-stage water inlet main pipeline, a three-stage water inlet first branch pipeline, and a three-stage water inlet second branch pipeline; the three-stage water outlet pipeline includes a three-stage water outlet main pipeline, a three-stage water outlet first pipeline, and a three-stage water outlet second pipeline; one end of the three-stage water inlet main pipeline is connected to the water inlet, and the other end of the three-stage water inlet main pipeline is connected to the liquid-cooled water inlet of the first liquid-cooled energy storage converter unit through the three-stage water inlet first branch pipeline, and to the liquid-cooled water inlet of the second liquid-cooled energy storage converter unit through the three-stage water inlet second branch pipeline; one end of the three-stage water outlet main pipeline is connected to the water outlet, and the other end of the three-stage water outlet main pipeline is connected to the liquid-cooled water outlet of the first liquid-cooled energy storage converter unit through the three-stage water outlet first branch pipeline, and to the liquid-cooled water outlet of the second liquid-cooled energy storage converter unit through the three-stage water outlet second branch pipeline.

[0013] In the above implementation scheme, the three-stage water inlet pipeline is designed to connect to the inlets of the first liquid-cooled energy storage converter unit and the second liquid-cooled energy storage converter unit respectively, based on the three-stage water inlet main pipeline and the two water inlet branch pipelines. The three-stage water outlet pipeline is designed to connect to the outlets of the first liquid-cooled energy storage converter unit and the second liquid-cooled energy storage converter unit respectively, based on the three-stage water outlet main pipeline and the two water outlet branch pipelines. This realizes the water inlet and outlet settings of the two liquid-cooled energy storage converter units. In this way, the circuit connection wiring can be arranged in layers above and below the water cooling pipeline, realizing the rational use of space.

[0014] In an optional embodiment of the first aspect, a gap is provided between two adjacent liquid-cooled energy storage converter units and between the liquid-cooled energy storage converter unit and the power distribution unit, and the liquid-cooled water inlet and liquid-cooled water outlet of the liquid-cooled energy storage converter unit are both located within the gap.

[0015] In the above-described implementation, this solution is designed with pre-reserved gaps between adjacent liquid-cooled energy storage converter units and between the liquid-cooled energy storage converter unit and the power distribution unit. This prevents the units from being tightly fitted together, thus preventing heat accumulation and superposition. At the same time, the airflow within the gaps helps to dissipate heat from the unit surface, forming a dual heat dissipation system with the liquid cooling, improving heat dissipation reliability. Furthermore, the liquid cooling inlet and outlet ports and connecting pipelines are located within the gaps, avoiding exposure to impacts, dust, etc., reducing the risk of interface leakage and pipeline damage. In addition, the gaps provide ample operating space for pipeline connection and maintenance, allowing for maintenance of interfaces and pipelines without disassembling the units, further improving maintenance convenience.

[0016] Secondly, this application provides an energy storage container, including a battery rack, multiple battery clusters, battery liquid cooling pipelines, converter liquid cooling pipelines, a liquid chiller, and power components as described in any of the optional embodiments of the first aspect, all disposed within the container; multiple battery clusters are disposed on the battery rack, forming at least two sets of battery clusters; wherein each set of battery clusters includes multiple battery packs distributed in multiple rows and columns, and the number of sets of battery clusters is the same as the number of liquid-cooled energy storage converter units in the power component; each power component is disposed on the battery rack via a supporting housing; wherein the bottom of each row of battery clusters... Alternatively, a power component may be located in the middle, and the third sidewalls of all power components face the same direction; the variable flow liquid cooling pipeline includes a variable flow inlet pipeline and a variable flow outlet pipeline. The liquid cooler is connected to the inlet of the three-stage inlet pipeline of each power component through the variable flow inlet pipeline, and the liquid cooler is connected to the outlet of the three-stage outlet pipeline of each power component through the variable flow outlet pipeline; the liquid cooler is also connected to each battery cluster through a battery liquid cooling pipeline; wherein, the battery liquid cooling pipeline is used to perform liquid cooling heat dissipation on each battery cluster, and the battery liquid cooling pipeline and the variable flow liquid cooling pipeline are distributed on the same side of the battery bracket.

[0017] The energy storage container designed above utilizes a battery bracket to achieve vertical integration of battery clusters and power components, significantly shortening the power transmission distance between them, reducing power loss, and improving the overall energy conversion efficiency of the energy storage container, while also increasing the utilization rate of the container's internal space. Furthermore, this solution addresses the heat dissipation needs of the power components and battery clusters through liquid chillers, converter liquid cooling pipelines, and battery liquid cooling pipelines. Additionally, because the liquid cooling inlet and outlet ports of all power components are uniformly positioned, and the battery liquid cooling pipelines and converter liquid cooling pipelines are distributed on the same side of the battery bracket, this design achieves a more efficient and efficient energy storage container. This allows the converter liquid cooling pipeline and the battery liquid cooling pipeline to be centrally located on the same side of the battery bracket. As a result, the energy storage container designed in this scheme can meet the high heat dissipation requirements of large-scale energy storage scenarios, while also allowing the liquid cooling pipelines (converter liquid cooling pipeline and battery liquid cooling pipeline) of the large-scale energy storage container to be laid on the same side of the battery bracket. Thus, the maintenance of all liquid cooling pipelines can be achieved through the single-side door opening method of the container. Compared with laying them in the middle of all power components (such as in the center of the bottom of the energy storage container), this improves the maintenance efficiency and convenience of the liquid cooling pipelines.

[0018] In an optional embodiment of the second aspect, the variable flow water inlet pipeline includes a primary variable flow water inlet pipeline and multiple secondary variable flow water inlet pipelines, and the variable flow water outlet pipeline includes a primary variable flow water outlet pipeline and multiple secondary variable flow water outlet pipelines; the liquid chiller is connected to multiple secondary variable flow water inlet pipelines through the primary variable flow water inlet pipeline, and each secondary variable flow water inlet pipeline is connected to the inlet of the tertiary water inlet pipeline of a power component; the liquid chiller is connected to multiple secondary variable flow water outlet pipelines through the primary variable flow water outlet pipeline, and each secondary variable flow water outlet pipeline is connected to the outlet of the tertiary water outlet pipeline of a power component; wherein, the inlets of the tertiary water inlet pipelines connected to different secondary water inlet pipelines are different, and the outlets of the tertiary water outlet pipelines connected to different secondary water outlet pipelines are different.

[0019] In the above implementation scheme, the converter liquid cooling pipeline adopts a two-stage pipeline design. The primary converter inlet pipeline serves as the main pipeline, directly receiving the coolant output from the liquid chiller to ensure sufficient flow and pressure. Multiple secondary converter inlet pipelines act as branches, diverting flow from the primary converter inlet pipeline to provide independent cooling for each power component, avoiding uneven flow distribution caused by multiple power components sharing a single pipeline. Simultaneously, this scheme designs each secondary converter inlet / outlet pipeline to connect only to the tertiary pipeline of one power component, and the tertiary inlet / outlet connections of different secondary pipelines are non-overlapping, ensuring independent and controllable coolant supply for each power component and adapting to the differentiated heat dissipation requirements of different power components.

[0020] In an optional embodiment of the second aspect, the primary converter inlet water pipe and the primary converter outlet water pipe are arranged parallel to the multiple power components; wherein, the distance between the primary converter outlet water pipe and the battery bracket bearing surface is less than the distance between the primary converter inlet water pipe and the battery bracket bearing surface, and the distance between the bearing housing of the power component and the battery bracket bearing surface is greater than the distance between the bearing housing of the primary converter inlet water pipe and the battery bracket bearing surface.

[0021] In the above-described implementation, this solution designs the primary converter outlet pipe to be located below the primary converter inlet pipe, and the primary converter inlet pipe to be located below the power component's supporting housing. Furthermore, the primary converter inlet and outlet pipes are arranged parallel to multiple power components. This avoids spatial interference between the primary converter inlet and outlet pipes and the power components, and ensures that the power components are not obstructed by other pipes in the horizontal space, providing ample operating space for rapid installation and disassembly of the power components. On the other hand, it minimizes the connection distance between the secondary branches and the tertiary pipes of the power components, reducing pipe bends and lowering coolant flow resistance.

[0022] In an optional embodiment of the second aspect, each battery cluster includes multiple battery packs stacked together. Each battery pack includes a battery liquid cooling plate, a battery liquid cooling inlet, and a battery liquid cooling outlet. The battery liquid cooling pipeline includes a battery inlet pipeline and a battery outlet pipeline. The liquid cooler is connected to the battery liquid cooling inlet of each battery pack via the battery inlet pipeline and to the battery liquid cooling outlet of each battery pack via the battery outlet pipeline. The battery liquid cooling inlet, battery liquid cooling outlet, and the third sidewall of the power component face the same direction.

[0023] In the above-described implementation, each battery pack in this solution is equipped with an independent liquid cooling plate and inlet / outlet ports to achieve precise heat dissipation at the pack level, avoid heat accumulation in stacked battery packs, ensure stable cell operating temperature, and improve the cycle life and safety of the battery cluster. At the same time, the orientation of the battery liquid cooling inlet and outlet ports of each battery pack in this solution is consistent with the orientation of the third sidewall of the power components. This allows the converter liquid cooling pipes and battery liquid cooling pipes of the large-scale energy storage container to be laid on one side of the third sidewall of multiple power components, thus eliminating the need to lay them in the middle of all power components (e.g., in the center of the bottom of the energy storage container), improving the maintenance efficiency and convenience of the liquid cooling pipes.

[0024] In an optional embodiment of the second aspect, the battery water inlet pipeline includes a primary battery water inlet pipeline, multiple secondary battery water inlet pipelines, and multiple tertiary battery water inlet pipelines; the battery water outlet pipeline includes a primary battery water outlet pipeline, multiple secondary battery water outlet pipelines, and multiple tertiary battery water outlet pipelines; wherein, a primary and secondary battery water inlet pipeline and a secondary battery water outlet pipeline are provided between every two rows of battery packs in each battery cluster; the liquid cooling water inlet of each battery pack is connected to the primary and tertiary battery water inlet pipelines, each tertiary battery water inlet pipeline is connected to the secondary battery water inlet pipeline of the corresponding battery pack row, the liquid cooling water outlet of each battery pack is connected to the primary and tertiary battery water outlet pipelines, and each tertiary battery water outlet pipeline is connected to the secondary battery water outlet pipeline of the corresponding battery pack row; the liquid cooler is connected to each secondary battery water inlet pipeline through the primary battery water inlet pipeline, and the liquid cooler is also connected to each secondary battery water outlet pipeline through the primary battery water outlet pipeline.

[0025] In the above implementation scheme, the battery liquid cooling pipeline designed in this scheme adopts a four-stage pipeline structure. The first-stage battery inlet pipeline receives the coolant from the liquid cooler. Multiple second-stage battery pipelines and multiple second-stage battery outlet pipelines are arranged according to the battery pack rows to ensure that the coolant is delivered to each row of battery packs. Multiple third-stage battery inlet pipelines and multiple third-stage battery outlet pipelines are precisely connected to individual battery packs to achieve precise distribution of coolant step by step. At the same time, a second-stage pipeline is arranged between every two rows of battery packs in each battery cluster. This avoids the second-stage pipeline occupying the battery pack installation space and minimizes the distance between the second-stage pipeline and the corresponding row of battery packs, thereby reducing the length of the third-stage pipeline.

[0026] In an alternative embodiment of the second aspect, each battery pack further includes an edge support platform; the distance between the edge support platform and the battery bracket is less than the distance between the liquid cooling inlet and the liquid cooling outlet and the battery bracket, and both the tertiary battery outlet pipe and the tertiary battery inlet pipe are mounted on the edge support platform.

[0027] In the above-described implementation, this solution sets an edge support platform at the edge of the battery pack as a dedicated carrier for the four-stage pipeline, eliminating the need for additional pipeline supports and simplifying the structure. The height of the edge support platform is lower than that of the liquid cooling inlet and outlet, ensuring that the pipeline and interface are connected in a straight line without bends, reducing flow resistance. At the same time, the three-stage pipeline is mounted on the edge support platform of the battery pack itself, preventing the pipeline from directly contacting the battery bracket or other components, preventing the pipeline from being squeezed and damaged, and preventing the coolant from contacting the battery pack cells in case of leakage, thus improving electrical safety.

[0028] In an alternative implementation of the second aspect, the number of liquid-cooled energy storage converter units in the power assembly is matched with the width of the energy storage container.

[0029] In the above-described implementation, the number of liquid-cooled energy storage converter units in the power components designed in this scheme is matched with the width of the energy storage container. This allows the energy storage container designed in this scheme to be adjusted by using power components with different numbers of liquid-cooled energy storage converter units when configuring standard-sized battery packs or battery packs of other sizes, thereby improving the adaptability and reliability of the electrical management of the battery pack in the designed energy storage container.

[0030] In an optional embodiment of the second aspect, the liquid chiller includes a battery water inlet, a battery water outlet, a converter water inlet, and a converter water outlet, wherein the battery water inlet and battery water outlet are located at the bottom of the liquid chiller, and the converter water inlet and converter water outlet are located on opposite sides of the air inlet side of the liquid chiller.

[0031] In the above-described implementation, the battery water inlet and outlet are located at the bottom of the liquid chiller, while the converter water inlet and outlet are located on opposite sides of the air inlet side of the liquid chiller. This way, the connection between the primary converter liquid cooling pipeline and the chiller is located on one side of the air inlet side of the liquid chiller, which does not obstruct the air inlet space of the chiller. At the same time, the connection between the primary battery liquid cooling pipeline and the liquid chiller 6 is located at the bottom of the liquid chiller, which can effectively avoid the converter liquid cooling pipeline and facilitate the pipeline layout.

[0032] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a first structural schematic diagram of a power component provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the liquid-cooled energy storage converter provided in the embodiments of this application; Figure 3 This is a schematic diagram of the second structure of the power component provided in an embodiment of this application; Figure 4 A third structural schematic diagram of the power component provided in an embodiment of this application; Figure 5 This is a schematic diagram of the overall structure of the energy storage container provided in the embodiments of this application; Figure 6 Another positional relationship diagram of the battery cluster and power components provided in the embodiments of this application; Figure 7 This is a schematic diagram of the layout of the variable flow liquid cooling pipeline provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the battery cluster and battery pack provided in the embodiments of this application; Figure 9 A schematic diagram of the layout of the battery liquid cooling pipeline provided in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the liquid cooler provided in an embodiment of this application.

[0035] Icons: 1-Power Component; 2-Battery Bracket; 3-Battery Cluster; 31-Battery Pack; 311-Battery Liquid Cooling Plate; 312-Battery Liquid Cooling Inlet; 313-Battery Liquid Cooling Outlet; 314-Edge Support Platform; 4-Battery Liquid Cooling Piping; 41-Battery Water Inlet Piping; 411-Primary Battery Water Inlet Piping; 412-Secondary Battery Water Inlet Piping; 413-Tertiary Battery Water Inlet Piping; 42-Battery Water Outlet Piping; 421-Primary Battery Water Outlet Water pipes; 422-Secondary battery water outlet pipe; 423-Third battery water outlet pipe; 5-Converter liquid cooling pipe; 51-Converter water inlet pipe; 511-First-stage converter water inlet pipe; 512-Secondary converter water inlet pipe; 52-Converter water outlet pipe; 521-First-stage converter water outlet pipe; 522-Secondary converter water outlet pipe; 6-Liquid cooler; 61-Battery water inlet interface; 62-Battery water outlet interface; 63-Converter water inlet interface; 64-Converter... 7-Outflow water interface; 10-Battery cluster assembly; 10-Carrier housing; 101-First sidewall; 102-Second sidewall; 103-Third sidewall; 110-Accommodation space; 20-Power distribution unit; 30-Liquid-cooled energy storage converter unit; 301-Liquid-cooled water inlet; 302-Liquid-cooled water outlet; 310-First liquid-cooled energy storage converter unit; 320-Second liquid-cooled energy storage converter unit; 40-Third-stage water inlet pipeline; 401-Water inlet; 402-Third-stage water inlet pipeline. 403 - Second and third stage water inlet pipes; 404 - Third stage water inlet main pipe; 405 - Third stage water inlet first branch pipe; 406 - Third stage water inlet second branch pipe; 50 - Third stage water outlet pipe; 501 - Water outlet; 502 - First and third stage water outlet pipes; 503 - Second and third stage water outlet pipes; 504 - Third stage water outlet main pipe; 505 - Third stage water outlet first pipe; 506 - Third stage water outlet second pipe; 60 - Spacing gap. Detailed Implementation

[0036] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0042] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] With the rapid development of new energy storage technologies, the requirements for power density, integration, and heat dissipation reliability of energy storage systems are constantly increasing. As the core power conversion unit in an energy storage system, the performance of power components directly determines the system's operating efficiency, stability, and lifespan. In large-scale energy storage applications (such as energy storage containers), to meet higher power output demands, multiple energy storage converter units typically need to work collaboratively, along with a power distribution unit to distribute and regulate power. Therefore, how to efficiently integrate multiple energy storage converter units and power distribution units and ensure their stable operation has become a key issue in current power component design.

[0045] Energy storage converters generate a large amount of heat during operation. If this heat cannot be dissipated in time, the temperature of the internal components will rise, affecting conversion efficiency and even causing malfunctions. Currently, liquid cooling is widely used in the heat dissipation design of high-power energy storage converters due to its advantages such as high heat dissipation efficiency and uniform temperature control.

[0046] Currently, large-scale energy storage applications (such as energy storage containers) typically integrate a large number of power components. To achieve liquid cooling for these power components, the conventional liquid cooling pipeline layout involves placing the liquid cooling pipeline in the middle of all power components (e.g., at the center of the bottom of the energy storage container) and then branching it to form multiple branch pipelines to achieve liquid cooling pipeline arrangement for each power component. However, this method makes it difficult to maintain the liquid cooling pipeline in case of failure because it places the liquid cooling pipeline below the power components.

[0047] To address the aforementioned issues, this application designs a power module and its energy storage container. By integrating the power distribution unit and at least two liquid-cooled energy storage converter units within the housing space of the supporting shell, the power density of the power module is increased, adapting to the high power output requirements of large-scale energy storage containers. Simultaneously, the wiring length between units is reduced, power loss is decreased, and conversion efficiency is improved. Furthermore, the liquid-cooling pipelines in this design are arranged on the first and second side walls of the supporting shell, with the inlet and outlet concentrated on the third side wall. This allows the liquid-cooling pipelines on the side walls of the supporting shell to achieve the liquid-cooling effect for multiple liquid-cooled energy storage converter units within the supporting shell. Moreover, since both the inlet and outlet are concentrated on the third side wall, the power module... The piping interfaces of the components are all located on one side of the power unit. In this case, the liquid cooling piping on the side wall of the housing of a single power unit achieves the liquid cooling effect of multiple liquid-cooled energy storage converter units inside it. For a collection of multiple power units, the third side wall of all power units can face the same direction, so that the piping of multiple integrated power units can be located on the same side. Thus, the power unit designed in this scheme achieves efficient liquid cooling heat dissipation while allowing the liquid cooling pipes of the large-scale energy storage container to be laid on one side of the third side wall of multiple power units, thereby eliminating the need to lay them in the middle of all power units (e.g., in the center of the bottom of the energy storage container), improving the maintenance efficiency and convenience of the liquid cooling pipes.

[0048] Based on the above ideas, this application first provides a power component, such as... Figure 1 and Figure 2 As shown, the power assembly includes a housing 10, a power distribution unit 20, and at least two liquid-cooled energy storage converter units 30.

[0049] The housing 10 refers to the housing structure that supports the power distribution unit 20 and the liquid-cooled energy storage converter unit 30. Its core function is to enclose and form a closed or semi-closed accommodating space, providing an installation foundation and protection for the internal units, and also serving as an installation carrier for the liquid-cooled pipelines.

[0050] The power distribution unit 20 represents the core unit for power distribution and regulation inside the power component. It is used to receive external power or distribute the power output from the liquid-cooled energy storage converter unit to achieve reasonable power scheduling.

[0051] The liquid-cooled energy storage converter unit 30 refers to the core unit of energy storage converter with liquid cooling function, which can realize the conversion of electrical energy form (such as DC to AC, AC to DC) and at the same time dissipate working heat quickly through the liquid cooling structure.

[0052] The power assembly designed above has a housing 10 enclosing a accommodating space 110. At least two liquid-cooled energy storage converter units 30 are arranged adjacent to each other within the accommodating space 110. A power distribution unit 20 is also located within the accommodating space 110, and each liquid-cooled energy storage converter unit 30 is electrically connected to the power distribution unit 20. A three-stage water inlet pipe 40 is fixedly installed on the first side wall 101 of the housing 10, and a three-stage water outlet pipe is fixedly installed on the second side wall 102. 50. The inlet 401 of the three-stage water inlet pipe 40 and the outlet 501 of the three-stage water outlet pipe 50 are all centrally located on the third side wall 103 of the bearing shell 10. Each liquid-cooled energy storage converter unit 30 is equipped with an independent liquid-cooled water inlet 301 and a liquid-cooled water outlet 302. The liquid-cooled water inlet 301 of a single liquid-cooled energy storage converter unit 30 is connected to the three-stage water inlet pipe 40, and the liquid-cooled water outlet 302 is connected to the three-stage water outlet pipe 50, forming an independent heat dissipation path.

[0053] In this solution, the aforementioned power components are integrated into a unified mounting carrier through the housing 10, where at least two liquid-cooled energy storage converter units 30 are integrated adjacently, along with a power distribution unit 20. All core units are concentrated in the same accommodating space 110, reducing the wiring distance between units and achieving compact integration of power components to meet the high power requirements of large-scale energy storage scenarios. Furthermore, by electrically connecting each liquid-cooled energy storage converter unit 30 to the power distribution unit 20, the power distribution unit 20 ensures unified power distribution and regulation of all liquid-cooled energy storage converter units 30, avoiding power disturbances when multiple units work together.

[0054] On the other hand, this solution arranges the three-stage water inlet pipe 40 and the three-stage water outlet pipe 50 on the first side wall 101 and the second side wall 102 opposite to the supporting housing 10, respectively. The liquid cooling inlet 301 and liquid cooling outlet 302 of the power components are concentrated on the third side wall 103 away from the power distribution unit 20. Each liquid cooling energy storage converter unit 30 is connected to the liquid cooling pipe on the side wall through an independent liquid cooling inlet and outlet. The coolant enters the three-stage water inlet pipe 40 from the inlet 401 of the third side wall 103, is distributed to each liquid cooling energy storage converter unit 30, carries away the working heat, and then flows into the three-stage water outlet pipe 50 through the liquid cooling outlet 302, and finally flows out from the outlet 501 of the third side wall 103, forming a complete heat dissipation circuit.

[0055] The power components designed above, in this solution, integrate the power distribution unit and at least two liquid-cooled energy storage converter units within the housing space of the supporting shell, thereby increasing the power density of the power components and adapting to the high power output requirements of large-scale energy storage containers. Simultaneously, it reduces the wiring length between units, lowers power loss, and improves conversion efficiency. Furthermore, the liquid-cooling piping in this solution is laid on the first and second side walls of the supporting shell, with the inlet and outlet concentrated on the third side wall. This allows the liquid-cooling piping on the side walls of the supporting shell to achieve the liquid-cooling effect for multiple liquid-cooled energy storage converter units within the supporting shell. Moreover, since the inlet and outlet are both concentrated on the third side wall, the piping interfaces of the power components are streamlined. All are located on one side of the power components. In this case, the liquid cooling pipes on the side wall of the housing of a single power component achieve the liquid cooling effect of multiple liquid-cooled energy storage converter units inside it. For a collection of multiple power components, the third sidewalls of all power components can face the same direction, so that the pipes of the integrated power components can all be located on the same side. Thus, the power components designed in this scheme achieve efficient liquid cooling heat dissipation while allowing the liquid cooling pipes of the large-scale energy storage container to be arranged on one side of the third sidewall of multiple power components, thereby eliminating the need to arrange them in the middle of all power components (e.g., in the center of the bottom of the energy storage container), improving the maintenance efficiency and convenience of the liquid cooling pipes. In addition, the inlet and outlet of the water in this scheme are far away from the power distribution unit. On the one hand, this allows the liquid cooling pipes to be as close as possible to the liquid-cooled energy storage converter units, reducing pipe length and complexity; on the other hand, it reduces the impact of the liquid cooling pipes on the power distribution unit.

[0056] In an optional implementation of this embodiment, as one possible implementation, such as Figure 3 As shown, the power component designed in this scheme has at least two liquid-cooled energy storage converter units 30, namely a first liquid-cooled energy storage converter unit 310 and a second liquid-cooled energy storage converter unit 320. The second liquid-cooled energy storage converter unit 320 is located between the first liquid-cooled energy storage converter unit 310 and the power distribution unit 20.

[0057] Due to the limited internal width of energy storage containers, under normal circumstances, the standard size of the battery clusters that can be adapted to the energy storage container is a battery cluster with two sides. Therefore, in order to perform electrical management on the battery clusters with two sides, this solution is designed to have at least two liquid-cooled energy storage converter units in the power components. This avoids the power components being too wide to be installed in the energy storage container, or too narrow to waste the space of the energy storage container, while performing electrical management on the standard size battery clusters with two sides.

[0058] Further, please continue to refer to Figure 3Based on the premise that the power component in this design has at least two liquid-cooled energy storage converter units 30, as a possible implementation, the three-stage water inlet pipe 40 designed in this scheme may include a first-stage water inlet pipe 402 and a second-stage water inlet pipe 403, and the three-stage water outlet pipe 50 may include a first-stage water outlet pipe 502 and a second-stage water outlet pipe 503. The first-stage water inlet pipe 402 and the second-stage water inlet pipe 403 represent smaller branches of the three-stage water inlet pipe 40, all distributed on the first sidewall, supplying water individually to different liquid-cooled energy storage converter units; the first-stage water outlet pipe 502 and the second-stage water outlet pipe 503 represent smaller branches of the three-stage water outlet pipe 50, all distributed on the second sidewall, supplying water individually to different liquid-cooled energy storage converter units.

[0059] Specifically, in this design, both the first and third-stage water inlet pipes 402 and 403 are arranged along the first side wall 101 of the supporting housing 10, with the first and third-stage water inlet pipes 402 positioned below the second and third-stage water inlet pipes 403. The liquid-cooled water inlet of the first liquid-cooled energy storage converter unit 310 is connected to the first and third-stage water inlet pipes 402, and the liquid-cooled water inlet of the second liquid-cooled energy storage converter unit 320 is connected to the second and third-stage water inlet pipes 403. 03 Connection; The first and third stage water outlet pipes 502 and the second and third stage water outlet pipes 503 are both arranged along the second side wall 102 of the bearing housing 10, and the first and third stage water outlet pipes 502 are arranged below the second and third stage water outlet pipes 503. The liquid cooling outlet of the first liquid cooling energy storage converter unit 310 is connected to the first and third stage water outlet pipes 502, and the liquid cooling outlet of the second liquid cooling energy storage converter unit 320 is connected to the second and third stage water outlet pipes 503.

[0060] In the above-described implementation, this solution achieves layered independent liquid cooling pipelines for the first liquid-cooled energy storage converter unit 310 and the second liquid-cooled energy storage converter unit 320. The three-stage inlet and outlet water pipelines are each split into two independent branches to accommodate the independent heat dissipation needs of the two liquid-cooled energy storage converter units, avoiding insufficient coolant flow caused by a single branch. Simultaneously, the first tertiary inlet water pipeline 402 is located below the second tertiary inlet water pipeline 403, and the first tertiary outlet water pipeline 502 is located below the second tertiary outlet water pipeline 503. The design achieves independent branch circuits with upper and lower layers of pipelines on the same side, allowing independent control of the coolant flow rate of each liquid-cooled energy storage converter unit. After entering through the liquid-cooled inlet 301 on the third side wall 103, the coolant flows into the first and third-stage inlet pipes 402 and 403 respectively, providing targeted heat dissipation for the corresponding units. After absorbing heat, the coolant flows through the first and third-stage outlet pipes 502 and 503 to converge into the liquid-cooled outlet 302, achieving independent layered heat dissipation without interference and ensuring stable flow.

[0061] In the above-described implementation scheme, each liquid-cooled energy storage converter unit is designed with an independent liquid-cooled branch. The coolant flow rate can be adjusted as needed to accommodate the heat dissipation differences of different units, avoiding insufficient or excessive heat dissipation in some units and improving heat dissipation uniformity. At the same time, the branch is designed independently, so a fault in a single branch only affects the corresponding liquid-cooled energy storage converter unit, while the other units can dissipate heat normally. This avoids the failure of the entire power component due to a single branch fault, improving fault tolerance. Furthermore, the pipes on the same side are arranged in layers, without crossover or messy issues, improving the regularity of the pipe layout and facilitating quick location of the faulty branch during subsequent pipe maintenance.

[0062] Further, please continue to refer to Figure 3 In this design, a gap 60 is provided between adjacent liquid-cooled energy storage converter units 30 and between a liquid-cooled energy storage converter unit 30 and a power distribution unit 20. The liquid cooling water inlet 301 and liquid cooling water outlet 302 of the liquid-cooled energy storage converter unit 30 are both located within the gap 60. The gap 60 represents the blank space reserved between adjacent liquid-cooled energy storage converter units and between a liquid-cooled energy storage converter unit and a power distribution unit. Additionally, the wiring between two liquid-cooled energy storage converter units and the power distribution unit 20 can also be installed within this gap 60.

[0063] In the above implementation, this solution reserves gaps between two adjacent liquid-cooled energy storage converter units and between the liquid-cooled energy storage converter unit and the power distribution unit. On the one hand, this avoids the superposition of heat conduction caused by the close contact of the units, and on the other hand, it provides operating space for the connection of the liquid-cooled inlet and outlet water ports and the side wall pipes. At the same time, the liquid-cooled inlet water port 301 and the liquid-cooled outlet water port 302 are set in the gap 60, so that the pipe connection point is hidden in the gap 60. This not only avoids the interface being exposed to the outside and damaged by external forces, but also allows the connecting pipes to not cross the unit body, shortening the pipe length and reducing bends.

[0064] In the above-described implementation, this solution is designed with pre-reserved gaps between adjacent liquid-cooled energy storage converter units and between the liquid-cooled energy storage converter unit and the power distribution unit. This prevents the units from being tightly fitted together, thus preventing heat accumulation and superposition. At the same time, the airflow within the gaps helps to dissipate heat from the unit surface, forming a dual heat dissipation system with the liquid cooling, improving heat dissipation reliability. Furthermore, the liquid cooling inlet and outlet ports and connecting pipelines are located within the gaps, avoiding exposure to impacts, dust, etc., reducing the risk of interface leakage and pipeline damage. In addition, the gaps provide ample operating space for pipeline connection and maintenance, allowing for maintenance of interfaces and pipelines without disassembling the units, further improving maintenance convenience.

[0065] In an optional embodiment of this solution, bidirectional shut-off valves can be installed on the first and third stage water inlet pipes 402, the second and third stage water inlet pipes 403, the first and third stage water outlet pipes 502 and the second and third stage water outlet pipes 503, thereby achieving independent controllability of the coolant in a single pipe, which facilitates later maintenance and debugging.

[0066] In an optional implementation of this embodiment, as another possible implementation, such as Figure 4 As shown, the three-stage inlet pipe 40 and the three-stage outlet pipe 50 designed in this scheme can also take the following form. Specifically, the three-stage inlet pipe 40 may include a three-stage inlet main pipe 404, a three-stage inlet first branch pipe 405, and a three-stage inlet second branch pipe 406. The three-stage outlet pipe 50 includes a three-stage outlet main pipe 504, a three-stage outlet first pipe 505, and a three-stage outlet second pipe 506. One end of the three-stage inlet main pipe 404 is connected to the inlet 401, and the other end of the three-stage inlet main pipe 404 is connected to the first liquid-cooled energy storage converter unit 3 through the three-stage inlet first branch pipe 405. The liquid-cooled water inlet 301 of the first liquid-cooled energy storage converter unit 310 is connected to the second liquid-cooled water inlet 301 of the second liquid-cooled energy storage converter unit 320 via the third-stage water inlet main pipe 404 and the third-stage water inlet second branch pipe 406. One end of the third-stage water outlet main pipe 504 is connected to the water outlet 501, the other end of the third-stage water outlet main pipe 504 is connected to the liquid-cooled water outlet 302 of the first liquid-cooled energy storage converter unit 310 via the third-stage water outlet first pipe 505, and the other end of the third-stage water outlet main pipe 504 is connected to the liquid-cooled water outlet 302 of the second liquid-cooled energy storage converter unit 320 via the third-stage water outlet second pipe 506.

[0067] In the above implementation scheme, the three-stage water inlet pipeline is designed to connect to the inlets of the first liquid-cooled energy storage converter unit and the second liquid-cooled energy storage converter unit respectively, based on the three-stage water inlet main pipeline and the two water inlet branch pipelines. The three-stage water outlet pipeline is designed to connect to the outlets of the first liquid-cooled energy storage converter unit and the second liquid-cooled energy storage converter unit respectively, based on the three-stage water outlet main pipeline and the two water outlet branch pipelines. This realizes the water inlet and outlet settings of the two liquid-cooled energy storage converter units. In this way, the circuit connection wiring can be arranged in layers above and below the water cooling pipeline, realizing the rational use of space.

[0068] This application also provides an energy storage container, such as Figure 5 The energy storage container includes power components 1 of any of the optional embodiments described above, battery racks 2, multiple battery clusters 3, battery liquid cooling pipes 4, converter liquid cooling pipes 5, and a liquid cooler 6 disposed within the container.

[0069] Among them, the energy storage container represents the core carrier for large-scale energy storage scenarios, integrating core components such as battery clusters, power modules, and liquid cooling systems to realize the storage and scheduling of electrical energy.

[0070] Battery bracket 2 refers to the support structure inside the energy storage container used to carry battery clusters and power components, providing a stable installation foundation.

[0071] Battery cluster 3 represents an energy storage unit composed of multiple battery packs, which is the core of the energy storage container; battery cluster set represents a battery cluster combination composed of multiple rows and columns of battery packs, with the number of groups matching the number of liquid-cooled energy storage converter units in the power module.

[0072] Battery liquid cooling line 4 refers to a liquid cooling line specifically for heat dissipation of battery clusters, independent of the liquid cooling line of power components; converter liquid cooling line 5 refers to a liquid cooling line specifically for heat dissipation of power components 1, a three-stage inlet and outlet water line connecting the liquid cooler and power components 1. Battery liquid cooling line 4 and converter liquid cooling line 5 are located on the same side of the battery bracket.

[0073] The liquid cooler 6 refers to the core liquid cooling equipment of the energy storage container, which provides coolant to the battery clusters and power components after cooling, and at the same time recovers the coolant after absorbing heat for cooling circulation.

[0074] The energy storage container designed above has multiple battery clusters 3 mounted on battery racks 2, forming at least two sets of battery clusters 7. Each set of battery clusters 7 contains multiple rows and columns of battery packs 31. The number of battery cluster sets is consistent with the number of liquid-cooled energy storage converter units 30 in a single power component 1. For example, Figure 3 As shown, the number of battery clusters is 2. In this case, the number of liquid-cooled energy storage converter units 30 in a single power component 1 is two.

[0075] Each power component 1 is mounted on the battery bracket 2 via its own supporting housing 10, and each battery cluster 3 has a power component 1 at its bottom (e.g., Figure 5 As shown) or a power component 1 is provided in the middle of each battery cluster 3 (such as Figure 6 As shown), the third sidewall 103 of all power components 1 faces the same orientation (as shown). Figure 5 (As shown facing forward), the variable flow liquid cooling pipeline 5 is divided into a variable flow inlet water pipeline 51 and a variable flow outlet water pipeline 52. The liquid cooler 6 is connected to the inlet 401 of the three-stage inlet water pipeline 40 of each power component 1 through the variable flow inlet water pipeline 51, and to the outlet 501 of the three-stage outlet water pipeline 50 of each power component 1 through the variable flow outlet water pipeline 52. The liquid cooler 6 is also connected to each battery cluster 3 through the battery liquid cooling pipeline 4 to provide liquid cooling heat dissipation for the battery cluster 3.

[0076] The aforementioned energy storage container, on the one hand, uses the battery bracket 2 as a unified supporting foundation, and sets the power component 1 below each row of battery clusters 3, realizing the vertical integration of battery clusters 3 and power components 1, shortening the power transmission distance between battery clusters 3 and power components 1; on the other hand, the number of battery clusters 7 is matched with the number of liquid-cooled energy storage converter units 30 in the power component 1, ensuring that each liquid-cooled energy storage converter unit can correspond to the power conversion needs of one row of battery clusters 3, realizing precise matching of energy storage and power conversion.

[0077] On the other hand, this solution configures a liquid cooler 6 as the main cold source, with independent converter liquid cooling pipeline 5 and battery liquid cooling pipeline 4, respectively supplying cooling for power components 1 and battery clusters 3. This achieves unified control of the liquid cooling system and avoids mixing and interference between the coolant of battery clusters 3 and power components 1. After being cooled by the liquid cooler 6, the coolant is divided into two paths and enters the converter liquid cooling pipeline 5 and battery liquid cooling pipeline 4 respectively, carrying away the heat of power components 1 and battery clusters 3. Then, it flows back to the liquid cooler 6 for cooling through the corresponding return water pipeline, forming a closed loop. At the same time, since the third sidewall 103 of all power components 1 in this solution is designed to face the same direction, the orientation of the liquid cooling inlet and outlet of all power components is unified. In addition, since the battery liquid cooling pipeline 4 and the converter liquid cooling pipeline 5 are distributed on the same side of the battery bracket 2, the converter liquid cooling pipeline 5 and the battery liquid cooling pipeline 4 can be centrally located on the same side of the battery bracket.

[0078] The energy storage container designed above utilizes a battery bracket to achieve vertical integration of battery clusters and power components, significantly shortening the power transmission distance between them, reducing power loss, and improving the overall energy conversion efficiency of the energy storage container, while also increasing the utilization rate of the container's internal space. Furthermore, this solution addresses the heat dissipation needs of the power components and battery clusters through liquid chillers, converter liquid cooling pipelines, and battery liquid cooling pipelines. Additionally, because the liquid cooling inlet and outlet ports of all power components are uniformly positioned, and the battery liquid cooling pipelines and converter liquid cooling pipelines are distributed on the same side of the battery bracket, this design achieves a more efficient and efficient energy storage container. This allows the converter liquid cooling pipeline and the battery liquid cooling pipeline to be centrally located on the same side of the battery bracket. As a result, the energy storage container designed in this scheme can meet the high heat dissipation requirements of large-scale energy storage scenarios, while also allowing the liquid cooling pipelines (converter liquid cooling pipeline and battery liquid cooling pipeline) of the large-scale energy storage container to be laid on the same side of the battery bracket. Thus, the maintenance of all liquid cooling pipelines can be achieved through the single-side door opening method of the container. Compared with laying them in the middle of all power components (such as in the center of the bottom of the energy storage container), this improves the maintenance efficiency and convenience of the liquid cooling pipelines.

[0079] In an optional embodiment of this invention, the number of liquid-cooled energy storage converter units 30 in the power component 1 designed in this scheme is matched with the width of the energy storage container.

[0080] In the above implementation, due to the limited internal width of the energy storage container, a standard-sized battery pack (e.g., a 52S-sized battery pack) can be configured on both sides within the energy storage container under normal circumstances, i.e., as described above, it contains two sets of battery clusters 7. In this case, the two sets of battery clusters 7 are divided into two parts in the width direction of the energy storage container. To realize the electrical management of each row of battery clusters, the liquid-cooled energy storage converter unit 30 needs to correspond to one row of battery clusters. Therefore, the number of liquid-cooled energy storage converter units 30 in the power component 1 designed in this scheme needs to be matched with the double-sided battery clusters. That is, the number of liquid-cooled energy storage converter units 30 in the power component 1 designed in this scheme is two, so that the two liquid-cooled energy storage converter units 30 of the power component 1 can realize the electrical management of each row of battery clusters in the two sets of battery clusters 7.

[0081] In the above-described embodiment, the number of liquid-cooled energy storage converter units 30 in the power component 1 of this solution is matched with the width of the energy storage container. This allows the energy storage container designed in this solution to be adjusted by using power components with different numbers of liquid-cooled energy storage converter units 30 when configuring standard-sized battery packs or battery packs of other sizes, thereby improving the adaptability and reliability of the electrical management of the battery pack in the designed energy storage container.

[0082] In an optional implementation of this embodiment, such as Figure 7 As shown, the variable flow water inlet pipeline 51 designed in this scheme includes a primary variable flow water inlet pipeline 511 and multiple secondary variable flow water inlet pipelines 512. The liquid chiller 6 is connected to the multiple secondary variable flow water inlet pipelines 512 through the primary variable flow water inlet pipeline 511. Each secondary variable flow water inlet pipeline 512 is connected to the inlet 401 of the tertiary water inlet pipeline 40 of a power component 1.

[0083] The variable flow outlet pipeline 52 includes a primary variable flow outlet pipeline 521 and multiple secondary variable flow outlet pipelines 522. The liquid chiller 6 is connected to the multiple secondary variable flow outlet pipelines 522 through the primary variable flow outlet pipeline 521. Each secondary variable flow outlet pipeline 522 is connected to the outlet 501 of the tertiary outlet pipeline 50 of a power component 1. The inlet 401 of the tertiary inlet pipeline 40 connected to different secondary variable flow inlet pipelines 512 is different, and the outlet 501 of the tertiary outlet pipeline 50 connected to different secondary variable flow outlet pipelines 522 is different.

[0084] In the above embodiment, the coolant flows out from the liquid chiller 6, is distributed through the primary converter water inlet pipe 511 to each secondary converter water inlet pipe 512, and then flows through each secondary converter water inlet pipe 512 into the tertiary water inlet pipe 40 of the corresponding connected power component 1 to dissipate heat from the corresponding power component 1. The coolant after absorbing heat is transferred through the tertiary water outlet pipe 50 of each power component 1 to each secondary converter water outlet pipe 522, and then flows through each secondary converter water outlet pipe 522 to the primary converter water outlet pipe 521. After flowing through the primary converter water outlet pipe 521, it returns to the liquid chiller 6 for cooling. This cycle is repeated to achieve heat dissipation and cooling for all power components 1.

[0085] In the implementation of the above design, the converter liquid cooling pipeline 5 adopts a two-stage pipeline design. The primary converter inlet pipeline 511 serves as the main pipeline, directly receiving the coolant output from the liquid chiller 6 to ensure sufficient flow and pressure. Multiple secondary converter inlet pipelines 512 serve as branches, diverting flow from the primary converter inlet pipeline 511 to provide independent cooling for each power component, avoiding uneven flow distribution caused by multiple power components sharing a single pipeline. Simultaneously, this design ensures that each secondary converter inlet / outlet pipeline connects to only one power component 1's tertiary pipeline, and the tertiary inlet and outlet ports connected to different secondary pipelines are non-overlapping, ensuring independent and controllable coolant supply for each power component and adapting to the differentiated heat dissipation needs of different power components.

[0086] In the optional implementation of this embodiment, please continue to refer to Figure 7 In this design, the primary converter water inlet pipe 511 and the primary converter water outlet pipe 521 are arranged parallel to multiple power components 1. The distance between the primary converter water outlet pipe 521 and the battery bracket bearing surface (such as the bottom surface of the energy storage container) is less than the distance between the primary converter water inlet pipe 511 and the battery bracket bearing surface. The distance between the bearing housing 10 of the power component 1 and the battery bracket bearing surface is greater than the distance between the primary converter water inlet pipe 511 and the battery bracket bearing surface.

[0087] In the above-described embodiment, the primary converter outlet pipe 521 is positioned below the primary converter inlet pipe 511, and the primary converter inlet pipe 511 is positioned below the supporting housing 10 of the power component 1. Furthermore, the primary converter inlet pipe 511 and the primary converter outlet pipe 521 are arranged parallel to the multiple power components 1. This avoids spatial interference between the primary converter inlet pipe 511 and the primary converter outlet pipe 521 and the power component 1, and ensures that the power component 1 is not obstructed by other pipes in the horizontal space, providing sufficient operating space for the rapid installation and disassembly of the power component 1. On the other hand, it minimizes the connection distance between the secondary branch and the tertiary pipe of the power component, reducing pipe bends and lowering coolant flow resistance.

[0088] In an optional embodiment of this design, a guide rail can be provided on each placement position of the battery bracket 2, so that the bearing housing 10 of the power component 1 can be inserted and installed and removed and disassembled through the guide rail on the placement position.

[0089] In the optional implementation of this embodiment, please continue to refer to Figure 8 Each battery cluster 3 in this design includes multiple stacked battery packs 31. Each battery pack 31 includes a battery liquid cooling plate 311, a battery liquid cooling inlet 312, and a battery liquid cooling outlet 313. The battery liquid cooling pipeline 4 includes a battery water inlet pipeline 41 and a battery water outlet pipeline 42. A liquid cooler 6 is connected to the battery liquid cooling inlet 312 of each battery pack 31 via the battery water inlet pipeline 41, and to the battery liquid cooling outlet 313 of each battery pack 31 via the battery water outlet pipeline 42. Furthermore, the orientation of the battery liquid cooling inlet 312 and battery liquid cooling outlet 313 of each battery pack is consistent with the orientation of the third sidewall 103 of the power assembly 1.

[0090] Among them, battery pack 31 represents the smallest energy storage unit that makes up battery cluster 3. The built-in battery liquid cooling plate 311 realizes liquid cooling heat dissipation. The battery liquid cooling plate 311 represents the heat dissipation component built into the battery pack, which removes the working heat of the battery pack through the flow of coolant.

[0091] In the above-described implementation, the battery packs in each battery cluster are stacked, making full use of the longitudinal space of the container to increase energy storage density. Each battery pack 31 is equipped with an independent battery liquid cooling inlet 312, battery liquid cooling outlet 313, and an internal battery liquid cooling plate 311, achieving precise heat dissipation of one battery pack per cooling plate pipeline. Specifically, the battery liquid cooling plate 311 is tightly attached to the internal cells of the battery pack 31. The coolant enters the battery liquid cooling inlet 312 through the battery inlet pipeline 41, carries away the working heat of the cells as it flows through the battery liquid cooling plate 311, and then flows into the battery outlet pipeline 42 through the battery liquid cooling outlet 313, realizing direct heat exchange between the cells and the coolant, with a heat dissipation efficiency far exceeding that of air cooling. Meanwhile, the orientation of the battery liquid cooling inlet 312 and battery liquid cooling outlet 313 of each battery pack in this design is consistent with the orientation of the third side wall 103 of the power component 1. This allows the converter liquid cooling pipeline 5 and battery liquid cooling pipeline 4 of the large-scale energy storage container to be laid on one side of the third side wall 103 of multiple power components, thus eliminating the need to lay them in the middle of all power components (e.g., in the center of the bottom of the energy storage container), thereby improving the maintenance efficiency and convenience of the liquid cooling pipeline.

[0092] In the above-described implementation, each battery pack in this solution is equipped with an independent liquid cooling plate and inlet / outlet ports to achieve precise heat dissipation at the pack level, avoid heat accumulation in stacked battery packs, ensure stable cell operating temperature, and improve the cycle life and safety of the battery cluster. At the same time, the liquid cooling inlet and outlet ports of each battery pack in this solution are oriented in the same direction as the third sidewall of the power components. This allows the converter liquid cooling pipes and battery liquid cooling pipes of the large-scale energy storage container to be laid on one side of the third sidewall of multiple power components, thus eliminating the need to lay them in the middle of all power components (e.g., in the center of the bottom of the energy storage container), improving the maintenance efficiency and convenience of the liquid cooling pipes.

[0093] Furthermore, such as Figure 9 As shown, the battery water inlet pipe 41 designed in this scheme includes a primary battery water inlet pipe 411, multiple secondary battery water inlet pipes 412 and multiple tertiary battery water inlet pipes 413; the battery water outlet pipe 42 includes a primary battery water outlet pipe 421, multiple secondary battery water outlet pipes 422 and multiple tertiary battery water outlet pipes 423. In each battery cluster 7, a primary and secondary battery water inlet pipe 412 and a secondary battery water outlet pipe 422 are provided between every two rows of battery packs 31. The battery liquid cooling water inlet 312 of each battery pack 31 is connected to a tertiary battery water inlet pipe 413, each tertiary battery water inlet pipe 413 is connected to the secondary battery water inlet pipe 412 of the corresponding row of battery pack 31, each battery liquid cooling water outlet 313 of each battery pack 31 is connected to a tertiary battery water outlet pipe 423, and each tertiary battery water outlet pipe 423 is connected to the secondary battery water outlet pipe 422 of the corresponding row of battery pack 31. The liquid cooler 6 is connected to each secondary battery water inlet pipe 412 through the primary battery water inlet pipe 411, and the liquid cooler 6 is also connected to each secondary battery water outlet pipe 422 through the primary battery water outlet pipe 421.

[0094] In the above implementation scheme, the battery liquid cooling pipeline designed in this scheme adopts a three-stage pipeline structure. The first-stage battery inlet pipeline 411 receives the coolant from the liquid cooler. Multiple second-stage battery inlet pipelines 412 and multiple second-stage battery outlet pipelines 422 are arranged according to the battery pack rows to ensure that the coolant is delivered to each row of battery packs. Multiple third-stage battery inlet pipelines 413 and multiple third-stage battery outlet pipelines 423 are precisely connected to individual battery packs to achieve precise distribution of coolant step by step. At the same time, a second-stage pipeline is arranged between every two rows of battery packs in each battery cluster. This avoids the second-stage pipeline occupying the battery pack installation space and minimizes the distance between the second-stage pipeline and the corresponding row of battery packs, thereby reducing the length of the third-stage pipeline.

[0095] In an optional implementation of this embodiment, such as Figure 8As shown, each battery pack 31 in this design also includes an edge support platform 314. The distance between the edge support platform 314 and the battery bracket 2 is less than the distance between the battery liquid cooling inlet 312 and the battery liquid cooling outlet 313 and the battery bracket 2. The three-stage battery water outlet pipe 423 and the three-stage battery water inlet pipe 413 are both mounted on the edge support platform 314.

[0096] In the above-described embodiment, an edge support platform 314 is provided at the edge of the battery pack 31 as a dedicated carrier for the tertiary pipeline, eliminating the need for additional pipeline supports and simplifying the structure. The edge support platform 314 is lower than the liquid cooling inlet and outlet, ensuring that the pipeline and interface are connected in a straight line without bends, reducing flow resistance. At the same time, the tertiary pipeline is mounted on the edge support platform 314 of the battery pack 31 itself, preventing the pipeline from directly contacting the battery bracket 2 or other components, preventing the pipeline from being damaged by compression, and preventing the coolant from contacting the battery pack cells in case of leakage, thus improving electrical safety.

[0097] In the optional implementation of this embodiment, as one possible implementation method, please continue to refer to... Figure 10 The liquid chiller 6 designed in this scheme includes a battery water inlet 61, a battery water outlet 62, a converter water inlet 63, and a converter water outlet 64. The battery water inlet 61 and the battery water outlet 62 are located at the bottom of the liquid chiller 6, while the converter water inlet 63 and the converter water outlet 64 are located on opposite sides of the air inlet side of the liquid chiller 6. In this way, the connection part of the primary converter liquid cooling pipeline to the chiller is located on one side of the air inlet surface of the liquid chiller 6, which does not obstruct the air inlet space of the chiller. At the same time, the connection part of the primary battery liquid cooling pipeline to the liquid chiller 6 is located at the bottom of the liquid chiller 6, which can effectively avoid the converter liquid cooling pipeline and facilitate the pipeline layout.

[0098] As another possible implementation, the battery water inlet 61 and battery water outlet 62 are designed to be located on opposite sides of the air inlet side of the liquid cooler 6, while the converter water inlet 63 and converter water outlet 64 are located at the bottom of the liquid cooler 6. In this way, since the power components 1 are all located at the bottom of the battery bracket 2, the connection of the converter liquid cooling pipes connected to the converter water inlet 63 and converter water outlet 64 does not require bending, shortening the pipe length and reducing flow resistance. At the same time, the bottom interface can prevent coolant from splashing onto other equipment in case of leakage, improving safety. In addition, since the battery clusters are distributed in the middle area of ​​the container, designing the battery water inlet 61 and battery water outlet 62 to be located on opposite sides of the air inlet side of the liquid cooler 6 can shorten the pipe length of the battery liquid cooling pipes, avoid pipe crossing and mess, and improve layout regularity.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power component, characterized in that, The power assembly includes a housing, a power distribution unit, and at least two liquid-cooled energy storage converter units; the housing forms an accommodating space, the at least two liquid-cooled energy storage converter units and the power distribution unit are disposed within the accommodating space, and the at least two liquid-cooled energy storage converter units are adjacent to each other, with each liquid-cooled energy storage converter unit electrically connected to the power distribution unit. The supporting housing has a three-stage water inlet pipe arranged along its first side wall and a three-stage water outlet pipe arranged along its second side wall; the inlets of the three-stage water inlet pipes and the outlets of the three-stage water outlet pipes are distributed on the third side wall of the supporting housing; wherein, the third side wall represents the side wall of the supporting housing farthest from the power distribution unit, and the third side wall is connected to the first side wall and the second side wall respectively, and the first side wall and the second side wall are parallel to each other and arranged opposite to each other; Each of the liquid-cooled energy storage converter units includes a liquid-cooled water inlet and a liquid-cooled water outlet. Each liquid-cooled water inlet is connected to the three-stage water inlet pipeline, and each liquid-cooled water outlet is connected to the three-stage water outlet pipeline.

2. The power component according to claim 1, characterized in that, The at least two liquid-cooled energy storage converter units include a first liquid-cooled energy storage converter unit and a second liquid-cooled energy storage converter unit; the second liquid-cooled energy storage converter unit is located between the first liquid-cooled energy storage converter unit and the power distribution unit.

3. The power component according to claim 2, characterized in that, The three-stage water inlet pipeline includes a first-stage water inlet pipeline and a second-stage water inlet pipeline, and the three-stage water outlet pipeline includes a first-stage water outlet pipeline and a second-stage water outlet pipeline; Both the first and second third-stage water inlet pipes are arranged along the first side wall of the bearing housing, and the first third-stage water inlet pipe is located below the second third-stage water inlet pipe. The liquid cooling water inlet of the first liquid-cooled energy storage converter unit is connected to the first third-stage water inlet pipe, and the liquid cooling water inlet of the second liquid-cooled energy storage converter unit is connected to the second third-stage water inlet pipe. Both the first and second third-stage water outlet pipes are arranged along the second side wall of the bearing housing, with the first third-stage water outlet pipe located below the second third-stage water outlet pipe. The liquid-cooled water outlet of the first liquid-cooled energy storage converter unit is connected to the first third-stage water outlet pipe, and the liquid-cooled water outlet of the second liquid-cooled energy storage converter unit is connected to the second third-stage water outlet pipe.

4. The power component according to claim 3, characterized in that, The three-stage water inlet pipeline includes a three-stage main water inlet pipeline, a three-stage first branch water inlet pipeline, and a three-stage second branch water inlet pipeline. The three-stage water outlet pipeline includes a three-stage main water outlet pipeline, a three-stage first branch water outlet pipeline, and a three-stage second branch water outlet pipeline. One end of the three-stage main water inlet pipeline is connected to the water inlet, and the other end of the three-stage main water inlet pipeline is connected to the liquid-cooled water inlet of the first liquid-cooled energy storage converter unit via the three-stage first branch water inlet pipeline, and to the liquid-cooled water inlet of the second liquid-cooled energy storage converter unit via the three-stage second branch water inlet pipeline. One end of the three-stage main water outlet pipeline is connected to the water outlet, and the other end of the three-stage main water outlet pipeline is connected to the liquid-cooled water outlet of the first liquid-cooled energy storage converter unit via the three-stage first branch water outlet pipeline, and to the liquid-cooled water outlet of the second liquid-cooled energy storage converter unit via the three-stage second branch water outlet pipeline.

5. The power component according to claim 1, characterized in that, in, There are gaps between two adjacent liquid-cooled energy storage converter units and between the liquid-cooled energy storage converter unit and the power distribution unit. The liquid-cooled water inlet and liquid-cooled water outlet of the liquid-cooled energy storage converter unit are located within the gaps.

6. An energy storage container, characterized in that, The energy storage container includes a battery rack, multiple battery clusters, battery liquid cooling pipelines, converter liquid cooling pipelines, a liquid cooler, and multiple power components as described in any one of claims 1-5, all disposed within the container. The plurality of battery clusters are disposed on the battery bracket to form at least two sets of battery clusters; wherein, each set of battery clusters includes multiple battery packs distributed in multiple rows and columns, and the number of sets of battery clusters is the same as the number of liquid-cooled energy storage converter units in the power component; Each of the power components is mounted on the battery tray via the carrier housing, wherein one power component is provided at the bottom or middle of each row of battery clusters, and the third sidewalls of all power components face the same direction; The variable flow liquid cooling pipeline includes a variable flow inlet pipeline and a variable flow outlet pipeline. The liquid chiller is connected to the inlet of the three-stage inlet pipeline of each power component through the variable flow inlet pipeline, and the liquid chiller is connected to the outlet of the three-stage outlet pipeline of each power component through the variable flow outlet pipeline. The liquid cooler is also connected to each battery cluster via a battery liquid cooling pipeline; wherein, the battery liquid cooling pipeline is used to perform liquid cooling heat dissipation on each battery cluster, and the battery liquid cooling pipeline and the converter liquid cooling pipeline are distributed on the same side of the battery bracket.

7. The energy storage container according to claim 6, characterized in that, The variable flow inlet pipeline includes a primary variable flow inlet pipeline and multiple secondary variable flow inlet pipelines, and the variable flow outlet pipeline includes a primary variable flow outlet pipeline and multiple secondary variable flow outlet pipelines. The liquid chiller is connected to multiple secondary variable flow water inlet pipes through the primary variable flow water inlet pipe, and each of the secondary variable flow water inlet pipes is connected to the inlet of the tertiary water inlet pipe of a power component. The liquid chiller is connected to multiple secondary variable flow water outlets through the primary variable flow water outlet pipeline, and each of the secondary variable flow water outlet pipelines is connected to the outlet of the tertiary water outlet pipeline of a power component. Among them, the inlets of the tertiary inlet pipes connected to different secondary inlet pipes are different, and the outlets of the tertiary outlet pipes connected to different secondary outlet pipes are different.

8. The energy storage container according to claim 7, characterized in that, The primary converter inlet pipe and the primary converter outlet pipe are arranged parallel to the multiple power components. Wherein, the distance between the primary converter outlet pipe and the battery bracket bearing surface is less than the distance between the primary converter inlet pipe and the battery bracket bearing surface, and the distance between the power component bearing housing and the battery bracket bearing surface is greater than the distance between the primary converter inlet pipe bearing housing and the battery bracket bearing surface.

9. The energy storage container according to claim 6, characterized in that, Each column of the battery cluster includes multiple battery packs stacked together. Each battery pack includes a battery liquid cooling plate, a battery liquid cooling inlet, and a battery liquid cooling outlet. The battery liquid cooling pipeline includes a battery water inlet pipeline and a battery water outlet pipeline. The liquid cooler is connected to the liquid cooling inlet of each battery pack via the battery inlet pipe, and the liquid cooler is connected to the liquid cooling outlet of each battery pack via the battery outlet pipe. The liquid cooling inlet and outlet of the battery are oriented in the same direction as the third sidewall of the power component.

10. The energy storage container according to claim 9, characterized in that, The battery water inlet pipeline includes a primary battery water inlet pipeline, multiple secondary battery water inlet pipelines, and multiple tertiary battery water inlet pipelines; the battery water outlet pipeline includes a primary battery water outlet pipeline, multiple secondary battery water outlet pipelines, and multiple tertiary battery water outlet pipelines. Each battery cluster is equipped with a primary and secondary battery water inlet pipe and a secondary battery water outlet pipe between every two rows of battery packs. Each battery pack's liquid cooling inlet is connected to a primary and tertiary battery water inlet pipe, each of the tertiary battery water inlet pipes is connected to a secondary battery water inlet pipe in the corresponding row of the battery pack, each battery pack's liquid cooling outlet is connected to a primary and tertiary battery water outlet pipe, and each of the tertiary battery water outlet pipes is connected to a secondary battery water outlet pipe in the corresponding row of the battery pack. The liquid chiller is connected to the water inlet pipe of each of the secondary batteries through the water inlet pipe of the primary battery, and the liquid chiller is also connected to the water outlet pipe of each of the secondary batteries through the water outlet pipe of the primary battery.

11. The energy storage container according to claim 10, characterized in that, Each of the battery packs also includes an edge support platform; The distance between the edge support platform and the battery bracket is less than the distance between the liquid cooling inlet and the liquid cooling outlet and the battery bracket. Both the tertiary battery outlet pipe and the tertiary battery inlet pipe are mounted on the edge support platform.

12. The energy storage container according to claim 6, characterized in that, The number of liquid-cooled energy storage converter units in the power assembly is matched with the width of the energy storage container.

13. The energy storage container according to claim 6, characterized in that, The liquid chiller includes a battery water inlet, a battery water outlet, a variable flow water inlet, and a variable flow water outlet. The battery water inlet and battery water outlet are located at the bottom of the liquid chiller, and the variable flow water inlet and variable flow water outlet are located on opposite sides of the air inlet side of the liquid chiller.

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