Energy storage device and energy storage system

Abstract

The utility model provides an energy storage device and an energy storage system. The energy storage device comprises a cabinet body, a battery cluster and a heat management module. The battery cluster is accommodated in the cabinet body. The heat management module is used for managing the temperature of a battery cluster and comprises a frame, a fan and a flow guide part, an air outlet is formed in one side, in the first direction, of the frame, the fan is arranged in the frame and is opposite to the air outlet, the first direction is perpendicular to the vertical direction, the flow guide part comprises an opening, and the opening direction of the opening intersects with the first direction; the flow guide part is arranged on the outer side of the frame, at least part of the flow guide part is arranged on the side, in the first direction, of the exhaust outlet, and the flow guide part and the exhaust outlet are arranged at intervals. The reliability of the energy storage system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to an energy storage device and an energy storage system. BACKGROUND

[0002] With the rapid development of new energy technology, energy storage devices have become one of the more important research directions in the field of new energy. The thermal management module, as an important device in the energy storage device, has also received widespread attention. However, the heat discharged by the existing thermal management module will affect the surrounding other electronic devices, causing the surrounding other electronic devices to be prone to failure. Therefore, how to improve the reliability of the energy storage system has become a problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the present application provides an energy storage device and an energy storage system, which can improve the reliability of the energy storage system.

[0004] In a first aspect, the present application provides an energy storage device, which comprises a cabinet, a battery cluster and a thermal management module. The battery cluster is accommodated in the cabinet. The thermal management module is used for managing the temperature of the battery cluster, and comprises a frame, a fan and a flow guide. The frame is provided with an air outlet on one side in a first direction. The fan is arranged in the frame and opposite to the air outlet. The first direction is perpendicular to a vertical direction. The flow guide comprises an opening. The opening direction of the opening intersects the first direction. The flow guide is arranged outside the frame, and at least part of the flow guide is arranged on one side of the air outlet in the first direction and spaced apart from the air outlet.

[0005] In the above scheme, by arranging the flow guide, the hot air discharged by the thermal management module will first contact the flow guide when being discharged through the air outlet, and then be discharged from the opening of the flow guide under the guidance of the flow guide. The direction of the hot air is changed from the first direction to the direction intersecting the first direction, thereby reducing the possibility that the hot air discharged by the thermal management module directly affects the surrounding electronic devices, and improving the reliability of the energy storage system.

[0006] In some embodiments, the flow guide comprises a baffle and a connecting plate. The baffle is opposite to the air outlet in the first direction and is spaced apart from the air outlet. The baffle is connected to the frame through the connecting plate.

[0007] In the above scheme, by the above arrangement, it is beneficial to simplify the overall structure of the flow guide, and at the same time, it is beneficial to adjust the connecting plate and the baffle according to the arrangement position of the surrounding electronic devices, improve the arrangement flexibility of the flow guide, and improve the application range of the flow guide.

[0008] In some embodiments, the connecting plate is detachably connected to the frame.

[0009] In the above scheme, since the baffle can be detachably connected with the frame through the connecting plate, the flow direction of the baffle can be adjusted according to surrounding electronic devices, wind direction of the external environment and the like, so as to further reduce the influence of the hot air on the surrounding electronic devices, and after the heat management module is used for a certain period of time, the connecting plate can be separated from the frame to detect and maintain the baffle, thereby reducing the maintenance difficulty of the flow guide piece and having strong practicability.

[0010] In some embodiments, the connecting plate, the baffle and the frame enclose to form at least one opening in the vertical direction.

[0011] In the above scheme, by forming an opening in the vertical direction, the hot air can flow in the vertical direction, so that the hot air can be taken away by the wind in the external environment after leaving the baffle, reducing the possibility of hot air gathering around the energy storage device and the possibility of heat island effect, and improving the heat dissipation efficiency of the energy storage device.

[0012] In some embodiments, the flow guide piece further comprises a bottom plate, and the connecting plate, the baffle, the bottom plate and the frame enclose to form one opening in the vertical direction.

[0013] In the above scheme, through the above arrangement, the hot air can flow from one side opening to the external environment, reducing the possibility of forming turbulence between the exhaust port and the baffle, improving the air outlet volume and improving the heat dissipation efficiency.

[0014] In some embodiments, in the first direction, the distance between the bottom plate and the exhaust port gradually increases.

[0015] In the above scheme, through the above arrangement, the bottom plate plays a guiding role, so that the hot air flows along the extension direction of the bottom plate and reaches the baffle, thereby optimizing the flow path of the hot air and reducing the resistance of the hot air in the flow process, improving the flow efficiency and thereby improving the reliability of the energy storage system.

[0016] In some embodiments, in the first direction, the distance between the baffle and the exhaust port gradually increases.

[0017] In the above scheme, by adjusting the inclination angle of the baffle to adjust the opening area, wind speed and airflow direction, it is beneficial to flexibly adjust the ventilation effect according to actual needs, and it can also reduce the turbulence and impact of the hot air, so that the airflow is more stable, thereby improving the stability and reliability of the system.

[0018] In some embodiments, the exhaust port comprises a plurality of, the flow guide piece comprises a baffle and a partition plate, the plurality of exhaust ports are oppositely and spacedly arranged with the baffle in the first direction, the partition plate separates adjacent exhaust ports, and the baffle is connected with the frame through the partition plate.

[0019] In the above scheme, the partition plate can separate two adjacent exhaust ports to reduce the possibility of vortex and dead zone caused by the interference of hot air discharged by the two adjacent exhaust ports, thereby improving the stability and uniformity of the airflow, and the plurality of exhaust ports can increase the total exhaust capacity and improve the heat dissipation efficiency, and the uniformly distributed airflow can reduce the temperature gradient and avoid the possibility of local overheating, thereby improving the thermal balance performance of the energy storage device.

[0020] In some embodiments, the heat management module further comprises a condenser and a compressor arranged in the frame, the compressor is connected with the condenser through a pipeline, and the fan is used for dissipating heat from the condenser.

[0021] In the above scheme, by arranging the condenser and the compressor and other equipment in the frame, the heat exchange needs can be met, thereby realizing the cooling treatment of the battery cluster in the energy storage device, ensuring the normal operation of the battery cluster, and helping to improve the working efficiency of the battery cluster.

[0022] In some embodiments, the heat management module further comprises a shielding member arranged at the opening side of the flow guide member, and the shielding member is configured to shield external impurities.

[0023] In the above scheme, by arranging the shielding member, the possibility of external impurities entering the flow guide member and even the exhaust port is reduced, the possibility of external impurities polluting and blocking the flow guide member and the exhaust hole is reduced, and the operation reliability of the energy storage device is improved.

[0024] In some embodiments, the heat management module is accommodated in the cabinet, and the cabinet comprises a through hole, and the exhaust port is opposite to the through hole.

[0025] In the above scheme, by arranging the heat management module in the cabinet, the possibility of interference between the energy storage device and other devices is reduced, and the integration of the energy storage device is improved.

[0026] In some embodiments, the battery cluster comprises a battery device, the battery device comprises a battery monomer and a heat exchange assembly, the heat exchange assembly is used for heat exchange with the battery monomer, the battery cluster comprises the battery device, the heat exchange assembly is used for heat exchange with the battery device, the heat exchange assembly is arranged in the cabinet, the heat management module is arranged outside the cabinet, and the heat exchange assembly is connected to the heat management module.

[0027] In the above scheme, the heat management module is arranged outside the cabinet to increase the arrangement space of the battery cluster in the cabinet, thereby increasing the total capacity of the energy storage device.

[0028] In a second aspect, the embodiments of the present application provide an energy storage system, comprising a power conversion device and an energy storage device according to any one of the preceding embodiments. The power conversion device is used for electrically connecting the power generation device and the energy storage device, the power conversion device and the energy storage device are arranged at intervals, and a flow guide member is arranged between the exhaust port and the power conversion device.

[0029] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clear and understandable, and to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will describe the specific embodiments of the present application in detail. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0031] Figure 1 is a structural schematic diagram of an energy storage system provided by the embodiments of the present application;

[0032] Figure 2 is a structural schematic diagram of an energy storage device provided by the embodiments of the present application;

[0033] Figure 3 is an exploded structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0034] Figure 4 is a structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0035] Figure 5 is a cross-sectional structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0036] Figure 6 is a cross-sectional structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0037] Figure 7 is a cross-sectional structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0038] Figure 8 is a cross-sectional structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0039] Figure 9 is a cross-sectional structural schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0040] Figure 10 is a simple schematic diagram of the internal structure of a thermal management module in an energy storage device provided by the embodiments of the present application;

[0041] Figure 11 is a structural schematic diagram of a thermal management module in an energy storage device provided by an embodiment of the present application;

[0042] Figure 12 is a structural schematic diagram of another energy storage system provided by an embodiment of the present application;

[0043] Figure 13 is a structural schematic diagram of another energy storage device provided by an embodiment of the present application.

[0044] Label description

[0045] 1, energy storage device; 2, power conversion device; 3, power generation equipment; 4, transformer;

[0046] 10, cabinet body;

[0047] 20, battery cluster; 21, battery device; 211, battery monomer; 212, heat exchange assembly;

[0048] 30, thermal management module; 31, frame; 311, air outlet; 32, fan; 33, flow guide; 331, baffle, 332, connecting plate; 333, bottom plate; 334, partition plate; 34, condenser; 35, compressor; 36, shielding piece; 37, evaporator;

[0049] K1, opening; H, through hole;

[0050] X, first direction; Y, second direction; Z, vertical direction. DETAILED DESCRIPTION

[0051] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0052] 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 the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0053] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0054] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment in a manner known to those of ordinary skill in the art.

[0055] In the description of the embodiments of the application, the term“and / or” only means an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally means that the front and rear associated objects are in an“or” relationship.

[0056] In the description of the embodiments of the application, the term“a plurality of” means more than two (including two), and similarly, “a plurality of groups” means more than two groups (including two groups), and “a plurality of pieces” means more than two pieces (including two pieces).

[0057] In the description of the embodiments of the application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0058] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection”,“fixing” and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0059] In the embodiments of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging of the battery cell.

[0060] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0061] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a busbar component.

[0062] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0063] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0064] In some embodiments, the battery apparatus can be a battery pack including a box and one or more battery cell assemblies accommodated in the box.

[0065] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box by fixing the battery module in the box.

[0066] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0067] As an example, the box can include a first box and a second box. The first box and the second box are fastened so that an enclosed space is formed inside the box to accommodate the battery cell assembly. Here, the enclosed means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0068] In some embodiments, the energy storage apparatus can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire control module, etc.

[0069] As an example, the master module can be used as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master module can monitor the current, voltage, power or temperature of the battery cluster and the like. For example, the charging and discharging current, voltage and the like of the battery cluster can be controlled. The master module includes a slave battery management unit SBMU, a fusion switch and the like.

[0070] As an example, the master module can be used as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master module can monitor the current, voltage, power or temperature of the battery cluster and the like. For example, the charging and discharging current, voltage and the like of the battery cluster can be controlled. The master module includes a slave battery management unit SBMU, a fusion switch and the like.

[0071] As an example, the fire control system includes a control panel, a detector, an alarm device and the like for detecting, alarming or extinguishing the energy storage system.

[0072] As an example, the power distribution device can be used to distribute power to the energy storage device power module.

[0073] Since the energy required by people has strong time and space, in order to reasonably use energy and improve the utilization rate of energy, a device is needed to collect and store the excess energy that is not used for a period of time through a certain way, and to release and use the energy at a certain time or a certain place, so as to improve the utilization rate of energy. In this case, the energy storage device comes into being. The energy storage device is a device for storing electrical energy or other energy. Taking electrical energy as an example, it is often difficult to obtain stable power supply in some remote areas where power grids cannot reach. In this environment, the existence of the energy storage device is particularly important, which can provide the electrical energy required for daily life or experimental production.

[0074] The energy storage device contains a battery cluster, which usually generates a lot of heat during use. The heat generated by the battery cluster needs to be exchanged by the heat management module to conduct the heat to the outside environment. Some electronic devices such as power conversion devices and transformers are arranged around the energy storage device. The hot air discharged by the heat management module directly blows on these electronic devices, which reduces the service life and working efficiency of these electronic devices, thereby reducing the reliability of the energy storage system.

[0075] Based on the above technical problems, the technical scheme is provided, which sets the flow guide member, so that the hot air discharged by the thermal management module first contacts the flow guide member when being discharged through the air outlet, and is guided by the flow guide member to be discharged in the vertical direction, thereby reducing the possibility that the hot air discharged by the thermal management module directly affects the surrounding electronic devices, and improving the reliability of the energy storage system.

[0076] Figure 1 is a structural schematic diagram of an energy storage system provided by an embodiment of the present application.

[0077] In some embodiments, the energy storage system can include one or more energy storage devices 1 and a power conversion device 2 (Power Converter System, referred to as PCS), and the power conversion device 2 is used to be connected between a power generation equipment 3 and the energy storage device 1. The power generation equipment 3 is used to generate electric energy, and the electric energy generated by the power generation equipment 3 can be stored into the energy storage device 1 through the power conversion device 2. As an example, the power generation equipment 3 can be a solar panel, a water power generation equipment, a fire power generation equipment, a wind power generation equipment, etc. The specific type of the power generation equipment 3 is not limited in the present application.

[0078] Figure 2 is a structural schematic diagram of an energy storage device provided by an embodiment of the present application. Figure 3 is an exploded structural schematic diagram of a thermal management module in an energy storage device provided by an embodiment of the present application. Figure 4 is a structural schematic diagram of a thermal management module in an energy storage device provided by an embodiment of the present application.

[0079] Please refer to Figures 1 to 4 , the present application provides an energy storage device 1, which includes a cabinet 10, a battery cluster 20 and a thermal management module 30. The battery cluster 20 is contained in the cabinet 10. The thermal management module 30 is used to manage the temperature of the battery cluster 20, and the thermal management module 30 includes a frame 31, a fan 32 and a flow guide member 33. The frame 31 is provided with an air outlet 311 on one side along a first direction X, the fan 32 is arranged in the frame 31 and opposite to the air outlet 311, the first direction X is perpendicular to a vertical direction Z, the flow guide member 33 includes an opening K1, the direction of the opening K1 intersects with the first direction X, the flow guide member 33 is arranged outside the frame 31, and at least part of the flow guide member 33 is arranged on one side of the air outlet 311 along the first direction X and is arranged in a spaced manner with the air outlet 311.

[0080] Embodiments of the present application provide a kind of energy storage device 1, including one or more battery cluster 20 (Battery Cluster) to promote the voltage and capacity of energy storage device 1.Battery cluster 20 can include a plurality of battery devices, a plurality of battery devices are connected in series by busbar component to improve the voltage of energy storage device 1.When energy storage device 1 includes a plurality of battery cluster 20, a plurality of battery cluster 20 is connected in parallel between to improve the capacity of energy storage device 1.

[0081] Energy storage device 1 can be used in energy storage power station, wind power system, solar power system, mobile power system or temporary power supply system etc.Energy storage device 1 can store electrical energy as needed and output electrical energy at appropriate time.For example, energy storage device 1 can store electrical energy when electricity consumption is low, and provide electrical energy for relevant users or electrical equipment when electricity consumption is high.The energy storage system provided by embodiments of the present application can be any power system that needs to use energy storage device 1.

[0082] In some embodiments, energy storage device 1 is an energy storage container or an energy storage cabinet. Optionally, cabinet 10 includes a container or a cabinet.

[0083] Thermal management module 30 is used to manage the temperature of battery cluster 20, which can be understood as increasing, reducing or maintaining the temperature of battery cluster 20 to make battery cluster 20 at the best working temperature, thereby improving the performance of battery cluster 20.

[0084] As an example, thermal management module 30 can include a liquid cooling unit, which provides cooling liquid for adjusting the temperature of battery monomer to each battery device through pipeline.Fan 32 can dissipate the heat of cooling liquid in liquid cooling unit to the external environment through exhaust port 311.Of course, fan 32 can also directly dissipate the heat generated by battery monomer to the external environment through exhaust port 311.

[0085] Optionally, the liquid cooling unit can be arranged in frame 31.

[0086] Optionally, thermal management module 30 can be arranged in cabinet 10, or arranged outside cabinet 10, for example, frame 31 is arranged outside cabinet 10, cabinet 10 is provided with a connecting hole, and the liquid cooling unit is arranged in frame 31, and the liquid cooling unit provides cooling liquid for adjusting the temperature of battery monomer to each battery device through pipeline and is arranged in the connecting hole.

[0087] In some embodiments, frame 31 can be a hollow structure, and at least part of the components in thermal management module 30 can be arranged inside frame 31 or on the outer surface of frame 31, and frame 31 can support and protect at least part of the components in thermal management module 30.For the size and shape of frame 31, embodiments of the present application are not limited, and for example, the outer surface of frame 31 can be in the shape of a cuboid.

[0088] As an example, the thermal management module 30 can also be a wind cooling module.

[0089] Optionally, the number of air outlets 311 can include one or more.

[0090] Optionally, the number of air outlets 311 can include one or more.

[0091] Optionally, the number of air outlets 311 can include one or more.

[0092] Optionally, the number of air outlets 311 can include one or more.

[0093] Optionally, the number of air outlets 311 can include one or more.

[0094] Optionally, the number of air outlets 311 can include one or more.

[0095] Optionally, the number of air outlets 311 can include one or more.

[0096] It should be noted that the specific position of the air outlet 311 relative to the frame 31 body is not limited in the embodiments of the present application, and the air outlet 311 can be located on one side of the frame 31 body along the first direction X.

[0097] The connection mode between the fan 32 and the frame 31 is not limited in the embodiments of the present application, and the fan 32 can be fixed in the frame 31 or detachably connected to the frame 31. For example, the fan 32 can be fixed to the frame 31 body by welding, bonding or bolt connection.

[0098] The fan 32 is opposite to the air outlet 311, that is, the air outlet of the fan 32 is opposite to the air outlet 311, so that the hot air enters the fan 32 through the air inlet of the fan 32 and is discharged to the outside environment through the air outlet and the air outlet 311.

[0099] The flow guide 33 is arranged outside the frame 31, that is, the flow guide 33 is arranged on the outer surface of the frame 31, and the flow guide 33 is arranged in the air outlet direction of the air outlet 311. Alternatively, the flow guide 33 and the frame 31 can be located outside the cabinet 10, or the frame 31 is located inside the cabinet 10, the cabinet 10 is provided with an opening window, and at least part of the flow guide 33 is arranged outside the cabinet 10 through the opening window.

[0100] The connection mode between the flow guide 33 and the frame 31 is not limited in the embodiments of the present application, and the flow guide 33 can be connected to the frame 31 in a detachable manner or in a non-detachable manner. For example, the flow guide 33 can be fixed to the frame 31 by welding, bonding or bolt connection.

[0101] In some embodiments, the flow guide 33 is arranged on one side of the air outlet 311 along the first direction X and spaced apart from the air outlet 311. In other embodiments, part of the flow guide 33 is located on one side of the air outlet 311 along the first direction X and spaced apart from the air outlet 311. The other part of the flow guide 33 can be used to connect the frame 31.

[0102] In some embodiments, the projection of the air outlet 311 in the first direction X is located within the projection of the flow guide 33. In other embodiments, the projection of the air outlet 311 in the first direction X is partially overlapped with the projection of the flow guide 33. For example, the flow guide 33 includes two regions arranged in sequence along the vertical direction Z, and part of the projection of the air outlet 311 in the first direction X overlaps with one of the regions, so that the hot air can be guided to the other region through the overlapping region.

[0103] In the embodiments of the present application, the heat management module 30 is provided with the flow guide 33, so that the hot air discharged by the heat management module 30 first contacts the flow guide 33 when being discharged through the air outlet 311, and is discharged from the opening of the flow guide 33 under the guidance of the flow guide 33, so that the direction of the hot air is changed from the first direction X to a direction intersecting the first direction X, thereby reducing the possibility that the hot air discharged by the heat management module 30 directly affects the surrounding electronic devices, and improving the reliability of the energy storage system.

[0104] In some optional embodiments, referring to Figures 1 to 4 , the flow guide 33 includes a baffle 331 and a connecting plate 332, the baffle 331 is arranged opposite to the air outlet 311 along the first direction X and is spaced apart from the air outlet 311, and the baffle 331 is connected to the frame 31 through the connecting plate 332.

[0105] In some embodiments, in the first direction X, the projection of the air outlet 311 is located within the projection of the baffle 331. In other embodiments, in the first direction X, the projection of the air outlet 311 is partially overlapped with the projection of the baffle 331.

[0106] The baffle 331 is arranged spaced apart from the air outlet 311, so that the hot air discharged by the air outlet 311 flows along the extension direction of the baffle 331 after reaching the baffle 331 and colliding with the baffle 331, and the connecting plate 332 can limit the flow direction of the hot air. For example, the connecting plate 332 is connected to both sides of the baffle 331 along the vertical direction Z, so that both sides of the baffle 331 along the vertical direction Z are blocked, and the hot air cannot be discharged to the outside space from both sides of the baffle 331 along the vertical direction Z, but can only be discharged to the outside space from other sides of the baffle 331 which are not blocked, for example, from one side or both sides of the baffle 331 along the second direction Y. Alternatively, the connecting plate 332 is connected to both sides of the baffle 331 along the second direction Y, so that both sides of the baffle 331 along the second direction Y are blocked, and the hot air cannot be discharged to the outside space from both sides of the baffle 331 along the second direction Y, but can only be discharged to the outside space from other sides of the baffle 331 which are not blocked, for example, from one side or both sides of the baffle 331 along the vertical direction Z.

[0107] Optionally, the connecting plate 332 can be connected to the edge of the baffle 331, for example, the connecting plate 332 is connected to one side or both sides of the baffle 331 along the second direction Y. And / or, the connecting plate 332 is connected to one side or both sides of the baffle 331 along the vertical direction Z.

[0108] Optionally, the connecting plate 332 can extend along the first direction X, the connecting plate 332 can be a flat plate structure, or the connecting plate 332 can be a plate structure with an arc shape.

[0109] Optionally, the baffle 331 can be a flat plate structure, or a plate structure with an arc shape.

[0110] Optionally, the connecting plate 332 and the baffle 331 can be an integrated structure, or a split structure.

[0111] In these optional embodiments, through the above arrangement, it is beneficial to simplify the overall structure of the flow guide 33, and at the same time, it is beneficial to adjust the connecting plate 332 and the baffle 331 according to the arrangement position of the surrounding electronic device, improve the arrangement flexibility of the flow guide 33, and improve the application range of the flow guide 33.

[0112] In some optional embodiments, please refer to Figures 1 to 4 The connecting plate 332 is detachably connected with the frame 31.

[0113] The connecting plate 332 can be detachably connected with the surface of the frame 31 along the first direction X on which the air outlet 311 is arranged, so as to shorten the overall size of the connecting plate 332. The connecting plate 332 can also be detachably connected with the outer surface of the other side of the frame 31, that is, to avoid other structures according to design needs.

[0114] In these optional embodiments, since the baffle 331 can be detachably connected with the frame 31 through the connecting plate 332, the flow direction of the baffle 331 can be adjusted according to the surrounding electronic device, the wind direction of the external environment and other factors, so as to further reduce the influence of the hot air on the surrounding electronic device. In addition, after the heat management module 30 is used for a certain period of time, the connecting plate 332 can be separated from the frame 31, so as to detect and maintain the baffle 331, thereby reducing the maintenance difficulty of the flow guide 33, and having strong practicability.

[0115] Figure 5 is a cross-sectional structure schematic diagram of a heat management module in an energy storage device provided by an embodiment of the present application. Figure 6 is another cross-sectional structure schematic diagram of a heat management module in an energy storage device provided by an embodiment of the present application.

[0116] In some optional embodiments, please refer to Figures 2 to 6 The connecting plate 332, the baffle 331 and the frame 31 enclose at least one side opening K1 along the vertical direction Z.

[0117] Exemplarily, as Figure 5 shown, the connecting plate 332 is two, and the two connecting plates 332 are connected to the two side edges of the baffle 331 along the second direction Y, so that the baffle 331, the frame 31 and the two connecting plates 332 enclose two side openings K1 along the vertical direction Z, and the hot air can flow to the external environment through the two side openings K1.

[0118] Exemplarily, asFigure 6 As shown, when the plurality of connecting plates 332 are provided, the plurality of connecting plates 332 are connected to two side edges of the baffle 331 along the second direction Y and one side edge of the baffle 331 along the vertical direction Z, so that the baffle 331, the frame 31 and the plurality of connecting plates 332 enclose a side opening K1 along the vertical direction Z, through which the hot air can flow to the external environment. Alternatively, the side opening K1 along the vertical direction Z can be an upward opening K1 or a downward opening K1.

[0119] In these alternative embodiments, by forming the opening K1 along the vertical direction Z, the hot air can flow along the vertical direction Z, so that the hot air can be carried away by the wind in the external environment after leaving the baffle 331, reducing the possibility of the hot air gathering around the energy storage device 1, reducing the possibility of heat island effect, and improving the heat dissipation efficiency of the energy storage device 1.

[0120] In some alternative embodiments, referring to Figures 2 to 4 and Figure 6 the flow guide 33 further comprises a bottom plate 333, and the connecting plate 332, the baffle 331, the bottom plate 333 and the frame 31 enclose an opening K1 along the vertical direction Z.

[0121] Alternatively, the opening K1 enclosed by the connecting plate 332, the baffle 331, the bottom plate 333 and the frame 31 can be an upward opening K1, of course, it can also be a downward opening K1.

[0122] Alternatively, the bottom plate 333 can be a flat plate structure, or a plate structure with an arc shape.

[0123] Alternatively, the bottom plate 333 can connect the baffle 331 and the frame 31. Of course, the bottom plate 333 can also be connected to the connecting plate 332.

[0124] Alternatively, the bottom plate 333 and the baffle 331 can be an integral structure, or a split structure.

[0125] In these alternative embodiments, by the above arrangement, it is beneficial to make the hot air flow to the external environment through the side opening K1, reduce the possibility of the hot air forming turbulence between the air outlet 311 and the baffle 331, improve the air volume, and improve the heat dissipation efficiency.

[0126] Figure 7 is another cross-sectional structure schematic diagram of a thermal management module in an energy storage device provided by the embodiments of the present application.

[0127] In some alternative embodiments, referring to Figures 2 to 4 and Figure 7The distance between the baffle 331 and the air outlet 311 gradually increases along the first direction X.

[0128] Exemplarily, the bottom plate 333 is a flat structure, and the bottom plate 333 is inclined relative to the vertical direction Z. An included angle between the bottom plate 333 and the frame 31 is less than 90°.

[0129] Exemplarily, the bottom plate 333 is a plate structure with an arc surface shape. The bottom plate 333 can be a circular arc plate structure.

[0130] Optionally, the baffle 331 is located on a side of the bottom plate 333 vertically upward, and the direction in which the frame 31 points to the baffle 331 is that the bottom plate 333 extends in the vertically upward direction, and the distance between the baffle 331 and the air outlet 311 gradually increases along the first direction X. Here, the “gradually increases” can be proportional increase or irregular increase.

[0131] In these optional embodiments, through the above arrangement, the bottom plate 333 plays a guiding role, so that the hot air flows along the extension direction of the bottom plate 333 and reaches the baffle 331, thereby optimizing the flow path of the hot air, reducing the resistance of the hot air in the flow process, improving the flow efficiency, and improving the reliability of the energy storage system.

[0132] Figure 8 FIG. 8 is a cross-sectional structure diagram of another heat management module of an energy storage device provided in an embodiment of the present application.

[0133] In some optional embodiments, please refer to Figures 2 to 4 and Figure 8 The distance between the baffle 331 and the air outlet 311 gradually increases along the first direction X.

[0134] Exemplarily, the baffle 331 is a flat structure, and the baffle 331 is inclined relative to the vertical direction Z. Optionally, in an opening K1 enclosed by the bottom plate 333, the connecting plate 332, the baffle 331 and the frame 31, the baffle 331 can gradually move away from the air outlet 311 in the direction in which the bottom plate 333 points to the opening K1, so as to increase the distance between the baffle 331 and the air outlet 311, thereby increasing the area of the opening K1. Alternatively, the baffle 331 can gradually move close to the air outlet 311 in the direction in which the bottom plate 333 points to the opening K1, so as to gradually reduce the distance between the baffle 331 and the air outlet 311, thereby gradually reducing the area of the opening K1, so as to increase the wind speed, so that the hot air can flow to a farther area along the vertical direction Z, thereby reducing the influence of the hot air on the energy storage device 1 and the surrounding electronic devices.

[0135] Exemplarily, the baffle 331 is a plate structure with an arc surface shape. The baffle 331 can be a circular arc plate structure.

[0136] The distance between the baffle 331 and the air outlet 311 gradually increases along the first direction X. Here, the "gradually increases" can be a proportional increase or an irregular increase.

[0137] In these optional embodiments, by adjusting the inclination angle of the baffle 331 to adjust the opening K1 area, the air speed and the air flow direction, it is beneficial to flexibly adjust the ventilation effect according to actual needs, and also can reduce the turbulence and impact of hot air, so that the air flow is more stable, thereby improving the stability and reliability of the system.

[0138] Figure 9 is another cross-sectional structure schematic diagram of a thermal management module in an energy storage device provided by an embodiment of the present application.

[0139] In some optional embodiments, please refer to Figures 2 to 4 and Figure 9 The air outlet 311 includes a plurality of, the flow guide 33 includes the baffle 331 and the partition plate 334, the plurality of air outlets 311 and the baffle 331 are oppositely and spacedly arranged along the first direction X, the partition plate 334 separates the adjacent air outlets 311, and the baffle 331 is connected with the frame 31 through the partition plate 334.

[0140] Optionally, the number of baffles 331 can be one, and the number of partition plates 334 can match the number of air outlets 311, for example, the air outlet 311 includes two, and the partition plate 334 includes one; the air outlet 311 includes three, and the partition plate 334 includes two.

[0141] Optionally, when the connecting plate 332, the baffle 331 and the frame 31 form two side openings K1 along the vertical direction Z, the baffle 331 is located in the middle region of the baffle 331, so that the hot air discharged by different air outlets 311 is discharged to the outside environment from the two side openings K1 respectively.

[0142] In these optional embodiments, the partition plate 334 can separate the two adjacent air outlets 311 to reduce the possibility of vortex and dead zone generated by the hot air discharged by the two adjacent air outlets 311 interfering with each other, thereby improving the stability and uniformity of the air flow, and the plurality of air outlets 311 can increase the total exhaust amount, improve the heat dissipation efficiency, and the uniformly distributed air flow can reduce the temperature gradient, avoid the possibility of local overheating, and improve the thermal balance performance of the energy storage device 1.

[0143] Figure 10 is a simple schematic diagram of the internal structure of a thermal management module in an energy storage device provided by an embodiment of the present application.

[0144] In some optional embodiments, please refer to Figure 10The heat management module 30 further comprises a condenser 34 and a compressor 35 arranged in the frame 31, the compressor 35 is connected with the condenser 34 through a pipeline, and the fan 32 is used for heat dissipation of the condenser 34.

[0145] The heat management module 30 at least comprises a condenser 34 and a compressor 35, and the compressor 35 is used for driving refrigerant flow, and the condenser 34 is used for cooling treatment of the refrigerant. The heat management module 30 can further comprise an evaporator 37, which can be arranged in the frame 31 or outside the frame 31. As shown in the figure, the evaporator 37 is arranged in the frame 31, the compressor 35 can control the flow of refrigerant between the evaporator 37 and the condenser 34, the evaporator 37 is provided with two pipelines, one pipeline is used for refrigerant flow, and the other pipeline is used for cooling liquid flow. The refrigerant and the cooling liquid can realize heat exchange in the evaporator 37, the refrigerant absorbs at least part of the heat in the cooling liquid to cool the cooling liquid, and then the cooling liquid with reduced temperature leaves the evaporator 37 and is transferred to the position of the battery monomer in the energy storage device 1 to realize cooling operation of the battery monomer, which helps to improve the working efficiency of the battery monomer. The refrigerant absorbs at least part of the heat in the cooling liquid and is cooled and liquefied in the condenser 34, and the heat dissipated by the refrigerant is conducted to the exhaust port 311 by the fan 32 and discharged to the external environment.

[0146] In these optional embodiments, by arranging the condenser 34 and the compressor 35 and other devices in the frame 31, the heat exchange needs can be met, and the cooling treatment of the battery cluster 20 in the energy storage device 1 can be realized, so as to ensure the normal operation of the battery cluster 20 and help to improve the working efficiency of the battery cluster 20.

[0147] Figure 11 FIG. 1 is a structural schematic diagram of a heat management module in an energy storage device provided by an embodiment of the present application.

[0148] In some optional embodiments, referring to FIG. 1, Figure 11 The heat management module 30 further comprises a shielding piece 36 arranged on the side of the opening K1 of the flow guide piece 33, and the shielding piece 36 is configured to shield external impurities.

[0149] The side of the opening K1 of the flow guide piece 33 can be an opening K1 formed by surrounding each part in the flow guide piece 33 and the frame 31, or can be an opening K1 formed by surrounding each part in the flow guide piece 33 alone.

[0150] Optionally, the shielding piece 36 can be a structure for shielding rain and snow, can be a waterproof and breathable film, or can be other structures.

[0151] In the optional embodiments, the shielding member 36 is arranged to reduce the possibility of external impurities entering the flow guide member 33 and even the exhaust port, reduce the possibility of external impurities polluting and blocking the flow guide member 33 and the exhaust hole, and improve the operation reliability of the energy storage device 1.

[0152] Figure 12 FIG. 13 is a structural schematic diagram of another energy storage system provided by an embodiment of the present application.

[0153] In some optional embodiments, referring to Figure 11 and Figure 12 the heat management module 30 is accommodated in the cabinet 10, and the cabinet 10 includes a through hole H, and the exhaust port 311 is located opposite the through hole H.

[0154] Optionally, the heat management module 30 is accommodated in the cabinet 10, and the heat management module 30 can be arranged close to an inner wall of the cabinet 10, the inner wall is provided with a through hole communicating the inside of the cabinet 10 and the outside of the cabinet 10, the through hole and the exhaust port 311 can be arranged opposite along the first direction X, and at least part of the flow guide member 33 can extend out of the cabinet 10 through the through hole H. Of course, the through hole H and the exhaust port 311 can also be communicated through a connecting pipeline.

[0155] Optionally, the area of the through hole H and the area of the exhaust port 311 can be the same or different.

[0156] In the optional embodiments, the heat management module 30 is arranged in the cabinet 10 to reduce the possibility of interference between the energy storage device 1 and other devices, and improve the integration of the energy storage device 1.

[0157] Figure 13 FIG. 13 is a structural schematic diagram of another energy storage device provided by an embodiment of the present application. It can be understood that, in order to facilitate the illustration of the heat management module 30, the heat exchange assembly 212 and the battery monomer 211, Figure 13 only the connection of the heat management module 30 and the heat exchange assembly 212 in one battery device 21 is shown in FIG. 13, and the present embodiment is not limited to the connection relationship of the heat exchange assemblies 212 among the plurality of battery devices 21 and the connection relationship of the heat exchange assemblies 212 among the plurality of battery clusters 20.

[0158] In some optional embodiments, referring to Figure 13 the battery cluster 20 includes the battery device 21, the battery device 21 includes the battery monomer 211 and the heat exchange assembly 212, the heat exchange assembly 212 is used for heat exchange with the battery monomer 211, the heat exchange assembly 212 is arranged in the cabinet 10, the heat management module 30 is arranged outside the cabinet 10, and the heat exchange assembly 212 is connected to the heat management module 30.

[0159] Exemplarily, the battery device 21 comprises one or more battery cells 211, the heat exchange assembly 212 can exchange heat with the one or more battery cells 211 in the battery device 21, and the heat exchange assembly 212 transfers heat in the battery cells 211 to the heat management module 30, and the heat management module 30 guides the heat of the heat exchange assembly 212 to the outside.

[0160] Optionally, the heat exchange assembly 212 can comprise a liquid cooling plate.

[0161] Optionally, the liquid cooling plate can be arranged between adjacent battery cells 211, and can also be arranged on the top or bottom of the battery cells 211, and the embodiments of the present application do not limit this.

[0162] Optionally, the heat management module 30 can be arranged outside the cabinet 10 and close to the outer wall of the cabinet 10, the outer wall of the cabinet 10 is provided with a connecting hole to communicate the inside of the cabinet 10 and the outside of the cabinet 10, and the heat management module 30 and the heat exchange assembly can be communicated through a pipeline.

[0163] In these optional embodiments, the heat management module 30 is arranged outside the cabinet 10 to increase the arrangement space of the battery cluster 20 in the cabinet 10, thereby increasing the total capacity of the energy storage device 1.

[0164] Please refer to Figure 12 , in the second aspect, the embodiments of the present application provide an energy storage system, which comprises a power conversion device 2 and an energy storage device 1 as any of the preceding embodiments. The power conversion device 2 is used to electrically connect the power generation device and the energy storage device 1, the power conversion device 2 is arranged apart from the energy storage device 1, and the air outlet 311 and the power conversion device are provided with a flow guide piece 33.

[0165] Optionally, the power conversion device 2 and the energy storage device 1 are arranged apart along the first direction X, and the flow guide piece 33 is located between the air outlet 311 and the power conversion device.

[0166] Optionally, the energy storage system can further comprise a transformer 4, the transformer 4 is arranged apart from the energy storage device 1 along the first direction X, and the flow guide piece 33 is located between the air outlet 311 and the transformer 4.

[0167] It should be noted that the energy storage system provided by the embodiments of the present application has the beneficial effects of the energy storage device 1 in any of the preceding embodiments, and the specific details are described in the foregoing description of the beneficial effects of the energy storage device 1, which will not be described herein.

[0168] According to some embodiments of the present application, please refer to Figures 1 to 4 、 Figure 6 and Figure 12The energy storage device 1 comprises a cabinet 10, a battery cluster 20 and a thermal management module 30. The battery cluster 20 is accommodated in the cabinet 10. The thermal management module 30 is used for managing the temperature of the battery cluster 20, and the thermal management module 30 comprises a frame 31, a fan 32 and a flow guide 33. The frame 31 is provided with an air outlet 311 on one side in a first direction X, and the fan 32 is arranged in the frame 31 and opposite to the air outlet 311. The first direction X is perpendicular to a vertical direction Z. The flow guide 33 comprises an opening, and the direction of the opening intersects the first direction. The flow guide 33 is arranged outside the frame 31, and at least part of the flow guide 33 is arranged on one side of the air outlet 311 in the first direction X and spaced apart from the air outlet 311.

[0169] The flow guide 33 comprises a baffle 331 and a connecting plate 332. The baffle 331 is arranged opposite to and spaced apart from the air outlet 311 in the first direction X, and the baffle 331 is connected to the frame 31 through the connecting plate 332.

[0170] The flow guide 33 further comprises a bottom plate 333. The connecting plate 332, the baffle 331, the bottom plate 333 and the frame 31 enclose an opening K1 in the vertical direction Z. In the first direction X, the distance between the bottom plate 333 and the air outlet 311 gradually increases.

[0171] The energy storage system comprises a power conversion device 2 and the energy storage device 1 as in any of the preceding embodiments. The power conversion device 2 is used for electrically connecting the power generation device and the energy storage device 1. The power conversion device 2 is spaced apart from the energy storage device 1, and the flow guide 33 is arranged between the air outlet 311 and the power conversion device.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some or all of the technical features. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. In particular, each technical feature mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, include: Cabinet; The battery cluster is housed within the cabinet. A thermal management module is used to manage the temperature of the battery cluster. The thermal management module includes a frame, a fan, and a flow guide. The frame has an exhaust port on one side along a first direction. The fan is disposed inside the frame and opposite to the exhaust port. The first direction is perpendicular to the vertical direction. The flow guide includes an opening. The opening direction of the opening intersects the first direction. The flow guide is disposed outside the frame, and at least a portion of the flow guide is disposed on one side of the exhaust port along the first direction and spaced apart from the exhaust port.

2. The energy storage device according to claim 1, characterized in that, The flow guide includes a baffle and a connecting plate. The baffle is opposite to the exhaust port along a first direction and is spaced apart from the exhaust port. The baffle is connected to the frame through the connecting plate.

3. The energy storage device according to claim 2, characterized in that, The connecting plate is detachably connected to the frame.

4. The energy storage device according to claim 2, characterized in that, The connecting plate, the baffle, and the frame enclose the opening on at least one side along the vertical direction.

5. The energy storage device according to claim 4, characterized in that, The guide also includes a base plate, and the connecting plate, the baffle, the base plate and the frame together form an opening along the vertical direction.

6. The energy storage device according to claim 5, characterized in that, Along the first direction, the distance between the base plate and the exhaust vent gradually increases.

7. The energy storage device according to claim 2, characterized in that, Along the first direction, the distance between the baffle and the exhaust port gradually increases.

8. The energy storage device according to claim 1, characterized in that, The exhaust vents include multiple vents, and the flow guide includes a baffle and a partition. The multiple exhaust vents are opposite to the baffle along the first direction and are spaced apart. The partition separates adjacent exhaust vents, and the baffle is connected to the frame through the partition.

9. The energy storage device according to claim 1, characterized in that, The thermal management module also includes a condenser and a compressor disposed within the frame. The compressor is connected to the condenser via a pipe, and the fan is used to dissipate heat from the condenser.

10. The energy storage device according to claim 1, characterized in that, The thermal management module also includes a shielding component, which is disposed on the opening side of the flow guide and is configured to shield external impurities.

11. The energy storage device according to claim 1, characterized in that, The thermal management module is housed within the cabinet, which includes a through-hole, and the exhaust vent is positioned opposite the through-hole.

12. The energy storage device according to claim 1, characterized in that, The battery cluster includes a battery device, which includes a battery cell and a heat exchange component. The heat exchange component is used to exchange heat with the battery cell. The heat exchange component is disposed inside the cabinet, and the thermal management module is disposed outside the cabinet. The heat exchange component is connected to the thermal management module.

13. An energy storage system, characterized in that, The device includes a power conversion device and an energy storage device as described in any one of claims 1 to 12, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device, the power conversion device and the energy storage device are spaced apart, and the air guide is provided between the exhaust port and the power conversion device.

Images