Energy storage device, energy storage system and charging network

Abstract

The embodiment of the utility model discloses an energy storage device, an energy storage system and a charging network. The energy storage device comprises a bin body, the bin body comprises a cabinet body and a door body, the cabinet body is provided with an opening, the door body is connected with the cabinet body and covers the opening, and a first gap is formed between the door body and the cabinet body; the plurality of battery devices are positioned in the bin body; the baffle is located on the outer side of the door body and connected with the bin body, and the baffle covers the first gap. According to the energy storage device, the energy storage system and the charging network, the fireproof performance of the energy storage device can be improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more specifically, to an energy storage device, an energy storage system, and a charging network. Background Technology

[0002] Against the backdrop of increased global support for the development of new energy technologies, various energy storage-related technologies have been widely applied. Energy storage devices, due to their advantages such as high energy density and long lifespan, are gradually being used extensively.

[0003] In the development of energy storage technology, besides improving the performance of energy storage devices, fireproof sealing is also a crucial issue. If external flames enter the interior of an energy storage device, it can damage internal components, rendering the device unusable. Therefore, enhancing the fire resistance of energy storage devices is a pressing technical problem that needs to be solved. Utility Model Content

[0004] This application provides an energy storage device, an energy storage system, and a charging network, which can improve the fire resistance of the energy storage device.

[0005] In a first aspect, this application provides an energy storage device, comprising: a housing, the housing including a cabinet and a door, the cabinet having an opening, the door being connected to the cabinet and covering the opening, and a first gap between the door and the cabinet; a plurality of battery devices located within the housing; and a baffle located outside the door and connected to the housing, the baffle covering the first gap.

[0006] In the technical solution of this application embodiment, the baffle covers the first gap between the cabinet and the door, thereby reducing the entry of flames and high-temperature gases into the energy storage device or the overflow to the outside of the energy storage device through the first gap, extending the fire resistance time of the cabinet and improving the fire resistance performance of the energy storage device.

[0007] In some embodiments of the first aspect, the energy storage device further includes a first seal disposed within the first gap, and the baffle covers the first seal.

[0008] In the technical solution of this application embodiment, on the one hand, regardless of whether there is a flame or high-temperature gas inside or outside the energy storage device, a first sealing element is provided at the first gap. The first sealing element can form a sealing interface, preventing the flame or high-temperature gas from entering the interior of the energy storage device or overflowing to the exterior of the energy storage device through the gap between the door and the cabinet, thereby improving the fire resistance of the energy storage device. Furthermore, a baffle covers the surface of the first sealing element, thereby reducing the risk of the first sealing element failing due to direct contact with external flames. On the other hand, under normal conditions, the baffle can block ultraviolet rays, reducing the risk of the first sealing element aging due to long-term exposure to sunlight, thereby maintaining the sealing performance of the first sealing element.

[0009] In some embodiments of the first aspect, the opening area of ​​the cabinet has a first side, the door is rotatably connected to the cabinet via the first side, the baffle includes a first baffle covering a first gap between the first side and the door, the first baffle includes a first plate and a second plate, the first plate is fixed to the cabinet or the door, and the second plate is rotatably connected to the first plate.

[0010] In the technical solution of this application embodiment, the first baffle is rotatably connected by the first plate and the second plate. During the process of the door opening or closing around the cabinet, the first baffle can rotate with the door, thereby effectively covering the first gap and improving the effect of the first baffle in blocking flames or high-temperature gases, thereby improving the fire resistance of the energy storage device.

[0011] In some embodiments of the first aspect, the first baffle further includes a rotating pin, through which the second plate is rotatably connected to the first plate.

[0012] In the technical solution of this application embodiment, the second plate can rotate around the pivot pin. During the opening or closing of the door, the second plate can follow the rotation of the door so that the first baffle always covers the first seal.

[0013] In some embodiments of the first aspect, at least one elastic member is fitted onto the rotating pin for abutting the second plate against the housing.

[0014] In the technical solution of this application embodiment, the second plate abuts against the compartment body. When the door is opened and rotated, the elastic component can apply a rebound force to the second plate, thereby better abutting the second plate against the compartment body, thereby improving the sealing performance of the first seal and the fireproof performance of the baffle.

[0015] In some embodiments of the first aspect, the first plate is fixed to the cabinet body, and the second plate abuts against the door body.

[0016] In the technical solution of this application embodiment, the first plate is fixed on the cabinet, and the second plate abuts against the door, so that the first baffle can cover the first gap between the cabinet and the door and the first seal in the first gap, and the second plate can rotate as the door opens, so that the first baffle can always cover the first seal, further improving the sealing performance of the first seal and the fireproof performance of the baffle.

[0017] In some embodiments of the first aspect, the energy storage device further includes an isolator disposed between the first baffle and the door body.

[0018] In the technical solution of this application embodiment, by setting an isolation member between the first baffle and the door body, the first sealing member can be further isolated from the outside of the door body, so as to improve the fire resistance performance of the energy storage device.

[0019] In some embodiments of the first aspect, the area of ​​the opening of the cabinet also has a second side, and the baffle also includes a second baffle fixed to the door, the second baffle covering the first gap between the second side and the door.

[0020] In the technical solution of this application embodiment, the second baffle covers the first gap between the door and the cabinet, thereby blocking the first seal in the first gap from the outside of the door. In the presence of flames outside, the second baffle can prevent external flames from entering the interior of the energy storage device from the mating part, avoiding direct contact between the first seal and the flames, and further improving the fire resistance of the energy storage device.

[0021] In some embodiments of the first aspect, the energy storage device further includes an isolator disposed between the second baffle and the cabinet.

[0022] In the technical solution of this application embodiment, by setting an isolation component between the second baffle and the cabinet, the first sealing component set between the second side of the cabinet and the door can be further isolated from the outside of the door, thereby improving the fire resistance of the energy storage device.

[0023] In some embodiments of the first aspect, the energy storage device further includes an isolator, wherein the isolator is disposed within a first gap on the side of the first seal closer to the interior of the storage chamber.

[0024] In the technical solution of this application embodiment, the isolation member is disposed on the side of the first seal member close to the inside of the chamber, which can prevent the internal flame from directly contacting the first seal member, thereby reducing the risk of failure of the first seal member.

[0025] In some embodiments of the first aspect, the partition is provided on both the side of the cabinet near the door and the side of the door near the cabinet, and the partitions on the cabinet and the door are opposite to each other and spaced apart.

[0026] In the technical solution of this application embodiment, isolation components are provided on both the cabinet and the door, and the isolation components are located on the side of the first gap closer to the inside of the compartment. This can further prevent internal flames or high-temperature gases from directly contacting the first sealing component, and can improve the effect of isolating the internal and external spaces of the compartment, thereby improving the fire resistance of the energy storage device.

[0027] In some embodiments of the first aspect, the baffle protrudes away from the first seal and forms a receiving cavity, in which the first seal is partially received.

[0028] In the technical solution of this application embodiment, the area of ​​the baffle near the first seal forms a receiving cavity, so that the first seal can be partially contained in the receiving cavity. In the case of flames or high-temperature gases outside the energy storage device, the speed of heat transfer from the baffle to the first seal can be reduced, and the sealing performance of the first seal can be further improved.

[0029] In some embodiments of the first aspect, the door body includes a first door body and a second door body, with a fourth gap between the first door body and the second door body, and a second seal is disposed within the fourth gap.

[0030] In the technical solution of this application embodiment, there is a certain gap between the first door and the second door, which facilitates the installation and adjustment of the first and second doors, and makes the opening and closing of the first and second doors more flexible, reducing wear between the two doors. The second seal is set in the fourth gap, which isolates the external space of the door from the internal space, thereby improving the sealing performance of the energy storage device.

[0031] In some embodiments of the first aspect, the energy storage device further includes a third baffle fixed to the first door or the second door and covering the second seal.

[0032] In the technical solution of this application embodiment, the third baffle covers the surface of the second seal, which can reduce the risk of the second seal failing due to direct contact with external flames, thereby improving the fire resistance of the energy storage device. In addition, under normal conditions, the third baffle can also block ultraviolet rays, reducing the risk of the second seal aging due to long-term exposure to sunlight, thereby maintaining the sealing performance of the second seal.

[0033] In some embodiments of the first aspect, the third baffle is fixed to the first door body, and the energy storage device further includes an isolator, which is disposed between the third baffle and the second door body.

[0034] In the technical solution of this application embodiment, by setting an isolation member between the third baffle and the second door body, the second sealing member set between the first door body and the second door body can be isolated from the outside of the door body. In the presence of flames outside, the isolation member can further block the external flames, reduce the risk of sealing failure caused by the second sealing member directly contacting the flames, and further improve the fire resistance of the energy storage device.

[0035] In some embodiments of the first aspect, the energy storage device further includes an isolator, wherein the second seal is disposed on the side of the chamber body within the fourth gap.

[0036] In the technical solution of this application embodiment, the isolation member is disposed on the side of the second seal member close to the inside of the chamber, which can prevent the internal flame from directly contacting the second seal member, thereby reducing the risk of failure of the second seal member.

[0037] In some embodiments of the first aspect, the isolation member is provided on both the side of the first door body near the second door body and the side of the second door body near the first door body, and the isolation members on the first door body and the second door body are opposite to each other and spaced apart.

[0038] In the technical solution of this application embodiment, an isolation member is provided on both the first door and the second door, and the isolation member is located on the side of the fourth gap closer to the inside of the compartment, which can further prevent the internal flame or high temperature gas from directly contacting the second sealing member, and can improve the effect of isolating the internal space and external space of the compartment, thereby improving the fire resistance of the energy storage device.

[0039] In some embodiments of the first aspect, the insulating element is a thermally expanding material.

[0040] In the technical solution of this application embodiment, when thermal runaway occurs in the energy storage device, the internal temperature rises rapidly, and the isolation component expands rapidly when heated, completely filling the gap where the isolation component is located. This reduces the risk of direct leakage of internal flames or high-temperature gases, which could affect surrounding equipment and improves the reliability of the energy storage device.

[0041] In some embodiments of the first aspect, the third baffle protrudes away from the second seal and forms a receiving cavity, in which the second seal is partially received.

[0042] In the technical solution of this application embodiment, the area of ​​the third baffle near the second seal forms a receiving cavity, so that the second seal can be partially contained in the receiving cavity. In the case of flames or high-temperature gases outside the energy storage device, the speed of heat transfer from the third baffle to the second seal can be reduced, and the sealing performance of the second seal can be further improved.

[0043] In some embodiments of the first aspect, the hull includes a plurality of doors, each door being provided with a pressure relief plate and a flow deflector, the flow deflector being disposed outside the pressure relief plate.

[0044] In the technical solution of this application embodiment, when the pressure or temperature inside the energy storage device reaches a predetermined threshold, the pressure relief plate performs an action, which can reduce the pressure inside the energy storage device and improve the reliability of the energy storage device. In addition, the gas and other emissions discharged from the pressure relief plate can be discharged to the outside along the opening direction of the guide shroud, reducing the impact on surrounding equipment caused by the gas not being discharged in a fixed direction.

[0045] In a second aspect, an energy storage system is provided, including a power conversion device and an energy storage device according to the first aspect or any embodiment thereof, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

[0046] Thirdly, a charging network is provided, including a charging pile and an energy storage device according to the first aspect or any embodiment of the first aspect, or an energy storage system according to the second aspect or any embodiment of the second aspect, wherein the energy storage device is used to provide electrical energy to the charging pile. Attached Figure Description

[0047] Figure 1 A schematic diagram of the structure of an energy storage device according to an embodiment of this application is shown;

[0048] Figure 2 A schematic diagram of the structure of an energy storage device according to another embodiment of this application is shown;

[0049] Figure 3 A front view of the door body according to an embodiment of this application is shown;

[0050] Figure 4 A cross-sectional view of the door body according to an embodiment of this application is shown;

[0051] Figure 5 A partial structural schematic diagram of the door body according to an embodiment of this application is shown;

[0052] Figure 6 A partial structural schematic diagram of a door body according to another embodiment of this application is shown;

[0053] Figure 7 A partial structural schematic diagram of the energy storage device according to an embodiment of this application is shown;

[0054] Figure 8 A schematic diagram of the structure of the first baffle according to an embodiment of this application is shown;

[0055] Figure 9 A schematic diagram of the structure of the first baffle according to another embodiment of this application is shown;

[0056] Figure 10 A cross-sectional view of a door body according to another embodiment of this application is shown;

[0057] Figure 11 A partial structural schematic diagram of a door body according to another embodiment of this application is shown;

[0058] Figure 12 A partial structural schematic diagram of a door body according to another embodiment of this application is shown;

[0059] Figure 13 A front view of a door according to another embodiment of this application is shown;

[0060] Figure 14 A schematic diagram of an energy storage system according to an embodiment of this application is shown;

[0061] Figure 15 A schematic diagram of the charging network according to an embodiment of this application is shown.

[0062] The labels for each figure are as follows:

[0063] 1-Energy storage device; 10-Compartment body; 1001-Opening; 11-Cabinet body; 110-Center beam; 111-First side; 112-Second side; 1101-First connecting part; 1102-First mating part; 11a-First inner side wall; 101-First gap; 102-Second gap; 103-Third gap; 104-Fourth gap; 105-Fifth gap; 12-Door body; 121-First door body; 122-Second door body; 1201-Second connecting part; 1202-Second mating part; 12a-First side wall; 131-First sealing element; 132-Second sealing element; 14-Baffle; 141-First baffle; 1411-First plate; 1412-Second plate; 1412a-First part; 1412b-Second part; 1413-Rotating pin; 1414-Elastic component; 1415-Fixed component; 142-Second baffle; 1421-First bend; 1422-Second bend; 1423-Third bend; 1424-Fourth bend; 143-Third baffle; 1431-First bend section; 1432-Second bend section; 1433-Third bend section; 1434-Fourth bend section; 15-Isolator; 151-First isolator; 152-Second isolator; 153-Third isolator; 154-Fourth isolator; 155-Fifth isolator; 156-Sixth isolator; 157-Seventh isolator; 161-Hinge mounting base; 162-Hinge body; 163-Mounting bolt; 17-Pressure relief plate; 18-Diffuser; 19-Fan; 20-Battery unit; 2-Power conversion device; 3-Power generation equipment; 4-Charging pile; 5-Connector.

[0064] The accompanying drawings are not drawn to scale. Detailed Implementation

[0065] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0066] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0067] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0068] In this application, the reference to "embodiment" means that a specific 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 mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0069] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0071] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0072] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0073] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0074] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0075] With the promotion and application of new energy sources, energy storage technology has developed accordingly. An energy storage system is a device or system capable of storing energy and releasing it when needed. In the field of new energy, energy storage systems typically refer to devices that can store electrical energy and release it during peak electricity demand periods. Energy storage systems play multiple roles in the power system, including load balancing, frequency regulation, backup power, peak-valley pricing management, and improving grid stability. With the rapid development of renewable energy, the importance of energy storage systems is increasing daily.

[0076] Electrochemical energy storage, represented by lithium-ion batteries, is the most prevalent energy storage technology. Electrochemical energy storage systems typically include multiple energy storage devices, which may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery apps, which are connected in series via a busbar to increase the voltage of the energy storage device. When an energy storage device includes multiple battery clusters, these clusters are connected in parallel to increase the capacity of the energy storage device. Each battery app may include a housing and one or more individual battery cells encapsulated within the housing. Multiple individual battery cells can be connected in series, parallel, or a combination thereof, where a combination refers to a mix of series and parallel connections. In the embodiments of this application, the battery device may also be referred to as a battery pack, battery module, or battery assembly.

[0077] In the development of energy storage technology, in addition to improving the performance indicators such as capacity, efficiency, and cycle life of energy storage devices, fireproof sealing is also a crucial and unavoidable challenge. Energy storage devices typically operate in high-energy-density environments and may contain reactive chemicals. If external flames or high-temperature gases penetrate the interior of the energy storage device, it is highly likely to trigger a chain reaction, leading to problems such as damage to internal components, electrolyte leakage, or even failure.

[0078] Therefore, this application provides an energy storage device, an energy storage system, and a charging network that can solve the above-mentioned problems. An embodiment of this application provides an energy storage device comprising: a compartment, the compartment including a cabinet and a door, the cabinet having an opening, the door connected to the cabinet and covering the opening, and a first gap between the door and the cabinet; multiple battery devices located within the compartment; and a baffle located outside the door and connected to the compartment, covering the first gap. The baffle covering the first gap between the cabinet and the door reduces the entry of flames and high-temperature gases into the energy storage device or their overflow to the outside of the energy storage device through the first gap, extending the fire resistance time of the compartment and improving the fire resistance performance of the energy storage device.

[0079] The technical solutions described in this application are applicable to energy storage devices of various types and sizes. For example, the energy storage device can be an energy storage container or an energy storage cabinet. The energy storage device can be, for example, a regular cuboid structure, wherein the six faces of the cuboid are the six outer walls of the energy storage device. Setting the energy storage device as a cuboid structure facilitates its fixed placement and transportation. Of course, the energy storage device can also be of other shapes; for example, at least one wall of the energy storage device may be inclined.

[0080] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0081] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0082] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device via piping to regulate the temperature of the individual battery cells.

[0083] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0084] As an example, the master control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The master control module can monitor information such as the device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the master control module may include modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0085] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0086] As an example, the power distribution unit can be used to distribute power to the power modules of the energy storage device.

[0087] Figure 1 and Figure 2 A schematic diagram of the structure of the energy storage device 1 according to an embodiment of this application is shown; Figure 3 The front view of the door body according to an embodiment of this application is shown, for example, Figure 3 As shown Figure 2 The front view of the door 12 of the energy storage device 1 along the Y direction; Figure 4 As shown Figure 3 The cross-sectional view of the door 12 shown along section line B-B'; Figure 5 As shown Figure 4 A schematic diagram of the structure of a portion D of the door body 12 is shown. (See attached diagram.) Figures 1 to 5 As shown, the energy storage device includes: a housing 10, which includes a cabinet 11 and a door 12. The cabinet 11 has an opening 1001, and the door 12 is connected to the cabinet 11 and covers the opening 1001. There is a first gap 101 between the door 12 and the cabinet 11; a plurality of battery devices 20, which are located inside the housing 10; and a baffle 14, which is located outside the door 12 and connected to the housing 10, and covers the first gap 101.

[0088] The storage unit 10 has a cabinet 11 and a door 12. The door 12 covers the opening of the storage unit 10 and is used to isolate the internal and external spaces of the storage unit 10. The cabinet 11 provides support and fixation for the door 12. In a view along the thickness direction of the door 12, the shape of the door 12 can be any shape such as rectangular, circular, or polygonal. The cabinet 11 can serve as a supporting component for the door 12, allowing the door 12 to cover the opening 1001 of the storage unit 10. The shape of the cabinet 11 can be adapted to the shape of the door 12, or the shape of the opening 1001 can be adapted to the shape of the door 12. This application is not limited to this. For ease of description, a rectangular door 12 will be used as an example in the following description.

[0089] In addition, for the rectangular door 12, for ease of description, this application embodiment defines three reference directions. The width direction of the door 12 is the X direction, the height direction of the door 12 is the Z direction, and the thickness direction of the door 12 is the Y direction, wherein the width direction X, the height direction Z, and the thickness direction Y of the door 12 are perpendicular to each other.

[0090] The door 12 is connected to the cabinet 11. This means that any side wall of the door 12 parallel to the thickness direction of the door 12 is connected to the inner side wall of the corresponding cabinet 11, so that one end of the door 12 can be fixed relative to the cabinet 11, while the other end of the door 12 can be movable relative to the cabinet 11, so that the door 12 can be opened or closed relative to the cabinet 11.

[0091] It should be understood that the connection between the door 12 and the cabinet 11 can be a rotating connection, a sliding connection, or other feasible connection methods, as long as the door 12 can move relative to the cabinet 11 so that the storage compartment 10 can be opened or closed.

[0092] The storage compartment 10 may include multiple doors 12. For example, such as Figure 3 As shown, the door 12 may include a first door 121 and a second door 122. The second door 122 and the first door 121 are arranged sequentially along the width direction X of the door 12. The sides of the first door 121 and the second door 122 that are far apart from each other are respectively connected to the two corresponding inner side walls of the cabinet 11.

[0093] In some embodiments, continue to refer to Figure 3 The storage unit 10 may also include four doors. The cabinet 11 has a central beam 110 in the middle, which divides the cabinet 11 into two spaces. Each space is provided with a second door 122 and a first door 121 in sequence along the X direction.

[0094] A first gap 101 exists between the door 12 and the cabinet 11. This gap can refer to the side wall of the connection between the door 12 and the cabinet 11, or it can be between other side walls of the door 12 and the cabinet 11. One or more side walls of the door 12 cooperate with one or more inner side walls of the cabinet 11. For example, the door 12 includes four side walls, and the cabinet 11 includes four inner side walls. The four side walls and four inner side walls are matched one-to-one, and the first gap 101 is located between the cooperating side walls of the door 12 and the inner side walls of the cabinet 11. The existence of a certain gap between the door 12 and the cabinet 11 facilitates the installation and adjustment of the door 12, makes the door 12 open and close more flexibly, and reduces wear between the door 12 and the cabinet 11.

[0095] The battery device 20 is placed inside the compartment 10. A door 12 is provided at the opening 1001 of the compartment 10. The battery device 20 can be placed inside the compartment 10 through the opening 1001. The battery device 20 or other components inside the energy storage device 1 can be taken out at any time by opening the door 12, which facilitates the maintenance and use of the energy storage device 1.

[0096] The energy storage device may also include a baffle 14 located outside the door 12 and connected to the compartment 10. It is understood that the baffle 14 is disposed on the side of the cabinet 11 facing the outside of the door 12, and the baffle may be connected to the cabinet 11 or the door 12.

[0097] The baffle 14 can also cover the first gap 101, that is, the projection of the baffle 14 in the thickness direction of the door 12 covers the first gap 101, and covers the edge portion of the door 12 near the first gap 101 and the edge portion of the cabinet 11 near the first gap 101. In other words, the projection of the baffle 14 in the thickness direction of the door 12 partially overlaps with both the cabinet 11 and the door 12, thereby further isolating the internal and external spaces of the compartment 10.

[0098] In the technical solution of this application embodiment, the baffle 14 covers the first gap 101 between the cabinet 11 and the door 12, thereby reducing the entry of flames and high-temperature gases into the interior of the energy storage device 1 or the overflow to the exterior of the energy storage device 1 through the first gap 101, extending the fire resistance time of the compartment 10 and improving the fire resistance performance of the energy storage device 1.

[0099] Figure 6 It shows Figure 4 Another structural schematic diagram of a portion D of the door body 12 shown. In some embodiments, such as Figure 6 As shown, the energy storage device 1 also includes a first sealing element 131, which is disposed in the first gap 101, and the baffle 14 covers the first sealing element 131.

[0100] It should be understood that the first seal 131 can be provided in the area of ​​the first gap 101 near the inside of the door body 12, or it can be provided in the area of ​​the first gap 101 near the outside of the door body 12.

[0101] In some embodiments, the length of the first sealing member 131 along the direction of the cabinet body 11 and the door body 12 is greater than the distance between the cabinet body 11 and the door body 12, i.e., as shown in the figure. Figure 6 As shown, the length of the first seal along the X direction is greater than the width of the first gap 101 along the X direction. Therefore, after the first seal 131 is installed into the first gap 101, it is in a compressed state, thereby improving the sealing performance of the energy storage device 1. In environments where flames are present internally or externally, the first seal 131 can form a sealing interface, preventing flames from entering or overflowing through the gap between the door 12 and the cabinet 11, thereby improving the fire resistance of the energy storage device 1.

[0102] In some embodiments, the first seal 131 is disposed in the region of the first gap 101 near the outside of the door 12, and the length of the end of the first seal 131 near the outside of the door 12 along the X direction is greater than the length of the end of the first seal 131 near the inside of the door 12 along the X direction. The projection of the end of the first seal 131 near the outside of the door 12 in the thickness direction of the door 12 covers the first gap 101, and covers the edge portion of the door 12 near the first gap 101 and the edge portion of the cabinet 11 near the first gap 101. That is, the projection of the first seal 131 in the thickness direction of the door 12 partially overlaps with both the cabinet 11 and the door 12, so that the first seal 131 better isolates the inside and outside of the energy storage device 1, thereby improving the sealing performance of the energy storage device 1.

[0103] It should be understood that the length of the baffle 14 along the X direction should be greater than the length of the first seal 131 along the X direction, so that the projection of the baffle 14 in the thickness direction of the door body 12 completely covers the first seal 131, thereby isolating the first seal 131 from the outside of the door body 12.

[0104] On the one hand, regardless of whether flames or high-temperature gases exist inside or outside the energy storage device 1, the first sealing element 131, installed at the first gap 101, forms a sealing interface, preventing flames or high-temperature gases from entering the energy storage device 1 through the gap between the door 12 and the cabinet 11 or overflowing to the outside of the energy storage device 1, thus improving the fire resistance of the energy storage device 1. Furthermore, the baffle 14 covers the surface of the first sealing element 131, thereby reducing the risk of seal failure due to direct contact with external flames. On the other hand, under normal conditions, the baffle 14 can block ultraviolet rays, reducing the risk of aging of the first sealing element 131 due to long-term exposure to sunlight, thereby maintaining the sealing performance of the first sealing element 131.

[0105] In some embodiments, the baffle 14 protrudes away from the first seal 131 and forms a receiving cavity, in which the first seal 131 is partially received.

[0106] The area of ​​the baffle 14 near the first seal 131 forms a receiving cavity, which allows the first seal 131 to be partially contained within the receiving cavity. In the presence of flames or high-temperature gases outside the energy storage device 1, the baffle 14 can slow down the rate of heat transfer to the first seal 131, thereby further improving the sealing performance of the first seal 131.

[0107] In some embodiments, such as Figure 7 As shown, Figure 7 It shows Figure 2 The schematic diagram of a portion A of the energy storage device 1 shown is as follows: Figure 7 As shown, and further refer to Figures 1 to 5 The area of ​​the opening 1001 of the cabinet 11 has a first side 111. The door 12 is rotatably connected to the cabinet 11 via the first side 111. The baffle 14 includes a first baffle 141, which covers the first gap 101 between the first side 111 and the door 12. The first baffle 141 includes a first plate 1411 and a second plate 1412. The first plate 1411 is fixed to the cabinet 11 or the door 12, and the second plate 1412 is rotatably connected to the first plate 1411.

[0108] The door 12 and the cabinet 11 can be rotatably connected via the first side 111. The area of ​​the opening 1001 of the cabinet 11 includes four opposite sides projected along the thickness direction of the door 12. For example, as... Figure 3 As shown, the first side 111 of the cabinet 11 can be the leftmost side among the four sides arranged along the X direction, and the second side 112 of the cabinet 11 can be the uppermost side among the four sides arranged along the Z direction.

[0109] Door 12 and cabinet 11 are rotatably connected via the first side 111, which can be pointed to as... Figure 5As shown, the second connecting portion 1201 of the door 12 is rotatably connected to the first connecting portion 1101 of the cabinet 11. The first connecting portion 1101 is located on the first side 111 of the cabinet 11. The second connecting portion 1201 is located on the opposite side 111 of the door 12. The second connecting portion 1201 can be the portion opposite to the first connecting portion 1101 of the cabinet 11. The door 12 and the cabinet 11 are rotatably connected via the first side 111, or the second connecting portion 1201 is rotatably connected to the first connecting portion 1101. This means that the second connecting portion 1201 and the first connecting portion 1101 are connected in any way, allowing the door 12 to rotate around the first side 111 of the cabinet 11.

[0110] The baffle 14 includes a first baffle 141, and the first baffle 141 includes a first plate 1411 and a second plate 1412. The first plate 1411 can be fixed to the cabinet 11 or the door 12, while the second plate 1412 is rotatably connected to the first plate 1411. Figure 7 As shown, taking the first plate 1411 fixed on the cabinet 11 as an example, the second plate 1412 is rotatably connected to the first plate 1411, so that the first baffle 141 is a rotatable plate and is rotatably connected to the first connecting part 1101 of the cabinet 11.

[0111] Similarly, the second plate 1412 is rotatably connected to the first plate 1411, or it can mean that the second plate 1412 and the first plate 1411 are connected in any form, so that the second plate 1412 can rotate relative to the first plate 1411.

[0112] The first plate 1411 is fixed on the cabinet 11 or the door 12. As the door 12 opens or closes around the cabinet 11, the second plate 1412 can rotate with the opening of the door 12, thereby effectively covering the first gap 101 and improving the effect of the first baffle 141 in blocking flames or high-temperature gases, thereby improving the fire resistance of the energy storage device 1.

[0113] In some embodiments, the second plate 1412 protrudes away from the first seal 131 and forms a receiving cavity, in which the first seal 131 is partially received.

[0114] For example, such as Figure 5 The second plate 1412 may include a first part 1412a and a second part 1412b that are bent together. The end of the first part 1412a away from the second part 1412b is connected to the first plate 1411, and the end of the second part 1412b away from the first part 1412a rests against the door body 12 or has a certain distance from the door body 12.

[0115] As the first part 1412a transitions from the end near the first plate 1411 to the end near the second part 1412b, it gradually moves away from the first seal 131. That is, the first part 1412a increases the distance between the first baffle 141 and the door body 12, thereby providing more space for the first seal 131. The second part 1412b bends towards the door body 12 relative to the first part 1412a, thereby reducing the distance between the end of the second part 1412b away from the first part 1412a and the door body 12. This can reduce the risk of external flames or high-temperature gases entering through this distance and coming into contact with the first seal 131, and improve the fire resistance of the first baffle 141.

[0116] Figure 8 and Figure 9 A schematic diagram of the structure of the first baffle 141 according to an embodiment of this application is shown. In some embodiments, such as Figure 8 and Figure 9 As shown, the first baffle 141 also includes a rotating pin 1413, and the second plate 1412 is rotatably connected to the first plate 1411 through the rotating pin 1413.

[0117] The second plate 1412 can rotate around the pivot pin 1413. During the opening or closing of the door 12, the second plate 1412 can follow the rotation of the door 12, so that the first baffle 141 always covers the first seal 131, thereby further improving the sealing performance of the first seal 131 and the fire resistance performance of the energy storage device 1.

[0118] like Figure 7 and Figure 8 As shown, the door 12 and the first side 111 of the cabinet 11 can be connected by a hinge or a pin. The cabinet 11 and the door 12 are connected by the cooperation of the hinge mounting base 161, the hinge body 162 and the mounting bolt 163, and the door 12 can rotate along the axis of the mounting bolt 163, so that the door 12 can be opened or closed.

[0119] The first baffle 141 is provided in the connection area between the door 12 and the cabinet 11. That is, the first baffle 141 covers the first gap 101 of the connection area, and covers the first connecting part 1101 and the second connecting part 1201, thereby isolating the interior and exterior of the compartment 10.

[0120] When the door 12 is closed, the second plate 1412 can also abut against the door 12, or there can be a certain gap between the second plate 1412 and the door 12. For example, there is a gap between the second plate 1412 and the door 12 in the thickness direction, and an insulating element can be installed in the gap to further block external flames from entering the interior of the energy storage device 1, thereby improving the fire resistance of the energy storage device 1.

[0121] In some embodiments, the first plate 1411 is fixed to the cabinet 11 by one or more fasteners 1415. The fastener 1415 can be any component capable of fixing the first plate 1411 to the cabinet 11, such as screws, bolts, etc. In some embodiments, the fastener 1415 can be a rivet nut.

[0122] In some embodiments, such as Figure 8 and Figure 9 At least one elastic component 1414 may also be fitted onto the rotating pin 1413. The elastic component 1414 is used to press the second plate 1412 against the chamber body 10.

[0123] With multiple elastic components 1414 provided, these components can be spaced apart and fitted onto the rotating pin 1413. When the second plate 1412 rotates as the door 12 opens, the elastic components 1414 apply a restoring force to the second plate 1412, thereby better pressing the second plate 1412 against the door 12, further improving the sealing performance of the first seal 131 and the fire resistance of the energy storage device 1. Furthermore, the elastic components 1414 can automatically close the opened door 12, improving the ease of use of the energy storage device 1, especially when unattended. This effectively prevents external flames from entering the interior of the compartment 10 in the event of a flame, or prevents the direct overflow of high-temperature gases and other emissions from the energy storage device 1 in the event of thermal runaway.

[0124] In some embodiments, the first plate 1411 is fixed to the cabinet 11, and the second plate 1412 abuts against the door 12.

[0125] The second plate 1412 can directly abut against the door body 12 or indirectly abut against the door body 12. For example, a spacer can be provided between the second plate 1412 and the door body 12, and the second plate 1412 can abut against the door body 12 through the spacer.

[0126] The first plate 1411 is fixed to the cabinet 11, while the second plate 1412 abuts against the door 12, so that the first baffle 141 can cover the first gap 101 between the cabinet 11 and the door 12 and the first seal 131 in the first gap 101. The second plate 1412 can rotate as the door 12 is opened, so that the first baffle 141 can always cover the first seal 131, further improving the sealing performance of the first seal 131 and the fireproof performance of the baffle 14.

[0127] In some embodiments, the energy storage device 1 further includes an isolation member 15, which is provided between the first baffle 141 and the door 12.

[0128] Further reference Figure 6 The isolation member 15 may include a first isolation member 151. The first isolation member 151 is provided on the side of the door body 12 near the first baffle 141. The first isolation member 151 is located in the second gap 102 between the first baffle 141 and the door body 12.

[0129] The second gap 102 can refer to the location of the minimum distance between the first baffle 141 and the door body 12 in the Y direction. By providing the first isolation member 151 in the second gap 102, the first seal 131 can be further isolated from the outside of the door body 12, thereby improving the fire resistance of the energy storage device 1.

[0130] The first isolating element 151 may completely fill the second gap 102, or the first isolating element 151 may be compressed within the second gap 102, thereby further isolating the first sealing element 131 from the outside of the door body 12. In some embodiments, the first isolating element 151 may also fill a portion of the second gap 102, and the first isolating element 151 is a thermally expanding material, that is, the thickness of the first isolating element 151 is less than the width of the second gap 102. In an environment where there is an external flame, the high temperature of the flame causes the first isolating element 151 to expand due to heat, thereby further filling the second gap 102 to isolate the first sealing element 131 from the outside of the door body 12 and improve the fire resistance of the energy storage device 1.

[0131] In some embodiments, such as Figure 10 and Figure 11 As shown, Figure 10 As shown Figure 3 The cross-sectional view of the door 12 shown along section line C-C'; Figure 11 As shown Figure 10 A schematic diagram of a portion of the structure F of the door 12 shown. (See attached diagram.) Figure 10 and Figure 11 As shown, the area of ​​the opening 1001 of the cabinet 11 also has a second side 112, and the baffle 14 also includes a second baffle 142. The second baffle 142 is fixed on the door 12 and covers the first gap 101 between the second side 112 and the door 12.

[0132] It is understood that the second side 112 of the cabinet body 11 has a first mating part 1102, and the door body 12 has a second mating part 1202 at the position opposite to the second side 112. The second mating part 1202 and the first mating part 1102 cooperate with each other, and the second baffle 142 is fixed on the second mating part 1202 of the door body 12.

[0133] The second side 112 can be any of the four sides except for the first side 111. For example, the second side 112 can be... Figure 3The upper side of the two sides arranged along the Z direction shown is the second side 112, which is adjacent to the first side 111. Then the first mating part 1102 is the part of the cabinet 11 located on the second side 112.

[0134] The second mating part 1202 of the door 12 can be the part opposite to the first mating part 1102 of the cabinet 11. For example... Figure 10 As shown, the second mating part 1202 and the first mating part 1102 cooperate with each other. It can be understood that the first inner side wall 11a in the first mating part 1102, which is parallel to the Y direction, and the first side wall 12a in the second mating part 1202, which is parallel to the Y direction, are parallel to each other or overlap. Along the thickness direction of the door body 12, the door body 12 is flush with the outer side of the cabinet body 11 near the storage body 10, so that the door body 12 is embedded in the interior of the cabinet body 11.

[0135] It should be understood that there may also be a first gap 101 between the door body 12 and the cabinet body 11 in the mating part, and a first seal 131 is provided in the area of ​​the first gap 101 near the outside of the door body 12.

[0136] The second baffle 142 covers the first gap 101 between the second side 112 and the door body 12. That is, the second baffle 142 can be set at the mating part of the door body 12 and the cabinet body 11, and cover the edge part of the door body 12 near the first gap 101 and the edge part of the cabinet body 11 near the first gap 101, thereby isolating the first seal 131 located at the mating part from the outside of the door body 12.

[0137] The second baffle 142 may be different from the first baffle 141. The second baffle 142 may be integrally formed and fixed to the door body 12, so that when the door body 12 is opened, the second baffle 142 can move to the corresponding position with the door body 12. When the door body 12 is closed, the projection of the second baffle 142 in the thickness direction of the door body 12 can completely cover the first seal 131 to isolate the first seal 131 from the outside of the door body 12.

[0138] The second baffle 142 can block the first seal 131 of the mating part of the door 12 and the cabinet 11 from the outside of the door 12. In the presence of flames outside, the second baffle 142 can prevent external flames from entering the interior of the compartment 10 from the mating part, preventing the first seal 131 from directly contacting the flames and further improving the fire resistance of the energy storage device 1.

[0139] In some embodiments, a separator 15 may also be provided between the second baffle 142 and the cabinet 11.

[0140] For example, such as Figure 11As shown, the isolation member 15 may also include a second isolation member 152. The second isolation member 152 may be disposed between the second baffle 142 and the cabinet 11, that is, the second isolation member 152 is disposed on the side of the cabinet 11 near the second baffle 142. The second isolation member 152 is located in the third gap 103 between the second baffle 142 and the door 12.

[0141] The third gap 103 can refer to the location of the minimum distance between the second baffle 142 and the door 12 in the Y direction. By providing the second isolation member 152 in the third gap 103, the first sealing member 131 provided in the mating part of the door 12 and the cabinet 11 can be further isolated from the outside of the door 12, thereby improving the fire resistance of the energy storage device 1.

[0142] In some embodiments, the second baffle 14 protrudes away from the first seal 131 and forms a receiving cavity, in which the first seal 131 is partially received.

[0143] For example, such as Figure 11 The second baffle 142 may include a first bent portion 1421, a second bent portion 1422, a third bent portion 1423 and a fourth bent portion 1424 that are bent in sequence. The first bent portion 1421 is fixed to the door body 12. The second bent portion 1422 is bent away from the door body 12 relative to the first bent portion 1421. The third bent portion 1423 is bent towards the first sealing member 131 relative to the second bent portion 1422. The fourth bent portion 1424 is bent towards the cabinet body 11 relative to the third bent portion 1423, thereby forming a receiving cavity for accommodating the first sealing member 131.

[0144] As the second bend 1422 transitions from the end near the first bend 1421 to the end near the third bend 1423, it gradually moves away from the first seal 131. This means the second bend 1422 increases the distance between the second baffle 142 and the door 12, providing more space for the first seal 131. The fourth bend 1424 bends towards the cabinet 11 relative to the third bend 1423, reducing the distance between the end of the fourth bend 1424 away from the third bend 1423 and the cabinet 11. This reduces the risk of external flames or high-temperature gases entering through this distance and contacting the first seal 131, improving the fire resistance of the second baffle 142. Furthermore, the bending of the fourth bend 1424 towards the cabinet 11 relative to the third bend 1423 further reduces the third gap 103, thereby reducing the amount of insulating material required in the third gap 103 and saving costs.

[0145] In some embodiments, an isolator 15 may also be provided on the side of the first seal 131 near the interior of the chamber 10 within the first gap 101. That is, an isolator 15 may be provided in the region of the first gap 101 near the interior of the chamber 10. This isolator 15 can prevent internal flames from directly contacting the first seal 131, thereby reducing the risk of failure of the first seal 131. It should be understood that the number of isolators 15 can be one or more. For example, providing multiple isolators can further improve the flame blocking effect and reduce the risk of failure of the first seal 131.

[0146] In some embodiments, a partition 15 is provided on the side of the cabinet 11 near the door 12 and on the side of the door 12 near the cabinet 11. The partitions 15 on the cabinet 11 and the door 12 are opposite to each other and spaced apart.

[0147] For example, continue to refer to Figure 11 A third isolation member 153 is provided on the side of the cabinet 11 near the door 12, and a fourth isolation member 154 is provided on the side of the door 12 near the cabinet 11. The third isolation member 153 and the fourth isolation member 154 are arranged opposite each other and are both located in the area of ​​the first gap 101 near the inside of the door 12.

[0148] The third isolation element 153 and the fourth isolation element 154 are located in the first gap 101, which can further prevent the internal flame or high temperature gas from directly contacting the first seal 131, and can improve the effect of the internal and external space of the isolation chamber 10, thereby improving the fire resistance of the energy storage device 1.

[0149] In some embodiments, a gap exists between the third spacer 153 and the fourth spacer 154, and the third spacer 153 and the fourth spacer 154 are made of thermally expanding materials. In the event of thermal runaway in the energy storage device, the internal temperature rises rapidly, and the third spacer 153 and the fourth spacer 154 expand rapidly upon heating, completely filling the first gap 101. This reduces the risk of direct leakage of internal gases and other emissions, which could affect surrounding equipment, and improves the reliability of the energy storage device 1.

[0150] In some embodiments, such as Figure 4 and Figure 12 As shown, where Figure 12 It shows Figure 4 The diagram shows a partial structural diagram of door body 12. Door body 12 includes a first door body 121 and a second door body 122, with a fourth gap 104 between the first door body 121 and the second door body 122, and a second sealing element 132 is provided in the fourth gap 104.

[0151] The door 12 may include a first door 121 and a second door 122, which are arranged sequentially inside the cabinet 11, and the sides of the first door 121 and the second door 122 that are relatively far apart are respectively connected to the two inner side walls of the cabinet 11.

[0152] The second seal 132 is located within the fourth gap 104. For example, the second seal 132 can be disposed in the area of ​​the fourth gap 104 near the outside of the door body 12; or, for another example, the second seal 132 can be disposed in the area of ​​the fourth gap 104 near the inside of the door body 12.

[0153] There is a certain gap between the first door 121 and the second door 122, which facilitates the installation and adjustment of the first door 121 and the second door 122. At the same time, the opening and closing of the first door 121 and the second door 122 is more flexible, reducing wear between the two door 12s.

[0154] The second seal 132 is disposed in the fourth gap 104, which isolates the external space of the door 12 from the internal space, thereby improving the sealing performance of the energy storage device 1. The second seal 132 can be disposed in the same way as the first seal 131, which will not be described in detail here.

[0155] In some embodiments, continue to refer to Figure 12 The energy storage device 1 may also include a third baffle 143, which is fixed on the first door 121 or the second door 122 and covers the second seal 132.

[0156] The third baffle 143 is disposed on the side of the first door body 121 facing the outside of the door body 12. The projection of the third baffle 143 in the thickness direction of the first door body 121 covers the fourth gap 104, and covers the edge portion of the first door body 121 near the fourth gap 104 and the edge portion of the second door body 122 near the fourth gap 104, thereby isolating the second seal 132 from the outside of the door body 12.

[0157] It should be understood that the third baffle 143 covering the edge portion of the first door 121 near the fourth gap 104 and the edge portion of the second door 122 near the fourth gap 104 means that both the first door 121 and the second door 122 are in the closed state.

[0158] The third baffle 143 can be fixed to either the first door 121 or the second door 122. When the third baffle 143 is fixed to the first door 121, it can move with the first door 121 during opening or closing. Furthermore, when the first door 121 is open, the third baffle 143 only covers the edge of the first door 121 and does not cover the second door 122.

[0159] The projection of the third baffle 143 in the thickness direction of the door body 12 partially overlaps with both the first door body 121 and the second door body 122, thereby isolating the second seal 132 from the outside of the door body 12.

[0160] like Figure 12 As shown, the length of the third baffle 143 along the X direction should be greater than the length of the second seal 132 along the X direction, so that the projection of the third baffle 143 in the thickness direction of the door body 12 completely covers the second seal 132, thereby isolating the second seal 132 from the outside of the door body 12.

[0161] The third baffle 143 covers the surface of the second seal 132, reducing the risk of seal failure due to direct contact with external flames, thereby improving the fire resistance of the energy storage device 1. Additionally, under normal conditions, the third baffle 143 can also block ultraviolet rays, reducing the risk of aging of the second seal 132 due to prolonged exposure to sunlight, thus maintaining the sealing performance of the second seal 132.

[0162] In some embodiments, the third baffle 143 is fixed to the first door body 121, and an isolation member 15 is provided between the third baffle 143 and the second door body 122.

[0163] For example, continue to refer to Figure 12 A fifth isolation element 155 may be provided on the side of the second door 122 near the third baffle 143. The fifth isolation element 155 is located in the fifth gap between the third baffle 143 and the first door 121.

[0164] With the first door 121 and the second door 122 closed, the fifth gap 105 can refer to the location of the minimum distance between the third baffle 143 and the second door 122 in the Y direction. By providing a fifth isolator 155 in the fifth gap 105, the second seal 132 located between the first door 121 and the second door 122 can be isolated from the outside of the door 12. In the event of an external flame, the third baffle 143 can block the external flame, reducing the risk of seal failure due to direct contact of the second seal 132 with the flame, and further improving the fire resistance of the energy storage device 1.

[0165] The third baffle 143 can be fixed to the first door 121 or the second door 122. Correspondingly, the fifth isolation member can be disposed on the second door 122 or the first door 121. For example, if the third baffle 143 is fixed to the first door 121, then the fifth isolation member 155 is disposed on the second door 122 and disposed in the fifth gap 105 between the second door 122 and the third baffle 143.

[0166] In some embodiments, the third baffle 143 protrudes away from the second seal 132 and forms a receiving cavity, in which the second seal 132 is partially received.

[0167] For example, such as Figure 12 As shown, taking the third baffle 143 fixed on the first door body 121 as an example, the third baffle may include a first bent section 1431, a second bent section 1432, a third bent section 1433 and a fourth bent section 1434 that are bent in sequence. The first bent section 1431 is fixed on the first door body 121. The second bent section 1432 is bent away from the first door body 121 relative to the first bent section 1431. The third bent section 1433 is bent towards the second seal 132 relative to the second bent section 1432. The fourth bent section 1434 is bent towards the second door body 122 relative to the third bent section 1433, thereby forming a receiving cavity for accommodating the second seal 132.

[0168] As the second bending segment 1432 transitions from the end near the first bending segment 1431 to the end near the third bending segment 1433, it gradually moves away from the second seal 132. This means the second bending segment 1432 increases the distance between the third baffle 143 and the first door 121, thus providing more space for the second seal 132. The fourth bending segment 1434 bends towards the second door 122 relative to the third bending segment 1433, reducing the distance between the end of the fourth bending segment 1434 away from the third bending segment 1433 and the second door 122. This reduces the risk of external flames or high-temperature gases entering through this distance and contacting the second seal 132, improving the fire resistance of the third baffle 143. Furthermore, the bending of the fourth bending segment 1434 towards the second door 122 relative to the third bending segment 1433 further reduces the fifth gap 105, thereby reducing the amount of insulating material required in the fifth gap 105 and saving costs.

[0169] The third baffle 143 forms a receiving cavity in the area near the second seal 132, so that the second seal 132 can be partially contained in the receiving cavity. In the presence of flames or high-temperature gases outside the energy storage device 1, the speed of heat transfer from the third baffle 143 to the second seal 132 can be reduced, thereby further improving the sealing performance of the second seal 132.

[0170] In some embodiments, an isolator 15 may also be provided on the side of the second seal 132 near the interior of the chamber 10 within the fourth gap 104. That is, an isolator 15 may be provided in the region of the fourth gap 104 near the interior of the chamber 10. This isolator 15 can prevent internal flames from directly contacting the first seal 131, thereby reducing the risk of failure of the second seal 132. It should be understood that the number of isolators 15 can be one or more. For example, providing multiple isolators can further improve the flame blocking effect and reduce the risk of failure of the second seal 132.

[0171] In some embodiments, a partition 15 is provided on the side of the first door 121 near the second door 122 and on the side of the second door 122 near the first door 121, and the partitions 15 on the first door 121 and the second door 122 are opposite to each other and spaced apart.

[0172] For example, such as Figure 12 As shown, a sixth isolation member 156 is provided on the side of the first door 121 near the second door 122, and a seventh isolation member 157 is provided on the side of the second door 122 near the first door 121. The sixth isolation member 156 and the seventh isolation member 157 are arranged opposite each other and are located in the area of ​​the fourth gap 104 near the interior of the door 12.

[0173] The sixth isolation element 156 and the seventh isolation element 157 are located in the fourth gap 104, which can further prevent the internal flame or high temperature gas from directly contacting the second seal and can improve the effect of the internal and external space of the isolation chamber 10, thereby improving the fire resistance of the energy storage device 1.

[0174] In some embodiments, a gap exists between the sixth isolation member 156 and the seventh isolation member 157, and the sixth isolation member 156 and the seventh isolation member 157 are made of thermally expanding materials. In the event of thermal runaway in the energy storage device, the internal temperature rises rapidly, and the sixth isolation member 156 and the seventh isolation member 157 expand rapidly upon heating, completely filling the fourth gap 104. This reduces the risk of direct leakage of internal gases and other emissions, which could affect surrounding equipment, and improves the reliability of the energy storage device 1.

[0175] The sealing element and the isolation element described in any of the above embodiments can be made of the same material or different materials. In some embodiments, the first sealing element 131 and the second sealing element 132 can be rubber-based materials, such as EPDM rubber, neoprene rubber, nitrile rubber, or silicone rubber. For example, the first sealing element 131 and the second sealing element 132 can be EPDM rubber, which has good chemical resistance and flame retardant properties. Using EPDM rubber can improve the fire resistance of the energy storage device 1.

[0176] In some embodiments, the insulating element 15 can be a thermally expandable material. In the event of a flame or a rapid increase in temperature, the insulating element 15 can expand rapidly upon heating, further filling the gap where the insulating element 15 is located, thereby preventing flames from entering or overflowing. For example, the insulating element 15 can be EPDM rubber or expandable graphite, etc. Expandable graphite can expand rapidly when exposed to high temperatures to form a heat insulation layer, effectively preventing the spread of fire. It should be understood that the materials of the insulating elements mentioned in any of the above embodiments can be the same or different, and the material selection of the insulating element at each location can be flexibly adjusted according to the actual product situation.

[0177] In some embodiments, such as Figure 13 As shown, the hopper body 10 may include multiple doors 12, each door 12 may be provided with a pressure relief plate 17 and a flow guide 18, the flow guide 18 being disposed on the outside of the pressure relief plate 17.

[0178] Multiple pressure relief plates 17 and multiple flow deflectors 18 can be installed on each door body 12. The number of pressure relief plates 17 and multiple flow deflectors can be the same or different. For example, multiple pressure relief plates 17 and multiple flow deflectors 18 can be installed in a one-to-one correspondence; or, for example, one pressure relief plate 17 can be equipped with two flow deflectors 18.

[0179] The pressure relief plate 17 is used to discharge gas or other waste from inside the energy storage device.

[0180] As an example, the internal pressure or temperature of the energy storage device is actuated to release the internal pressure or temperature when it reaches a predetermined threshold. When the internal pressure or temperature of the energy storage device reaches the predetermined threshold, the pressure relief plate 17 actuates or a weak structure provided in the pressure relief plate is destroyed, thereby forming an opening or channel for the release of internal pressure or temperature. This threshold design can be adjusted according to different design requirements.

[0181] The pressure relief plate 17 can be integrally formed with the door body 12, or it can be separately set and connected to the door body 12.

[0182] In some embodiments, a pressure relief plate 17 is provided with a corresponding flow guide 18. The flow guide 18 can be provided at the bottom of the pressure relief plate 17 along the direction of gravity, and has an opening at the top in the direction of gravity, so that the gas discharged from the pressure relief plate 17 can be discharged to the outside along the opening direction of the flow guide 18, reducing the impact on the surrounding equipment caused by the gas not being discharged in a fixed direction.

[0183] In the event of thermal runaway inside the energy storage device, the isolation components expand when heated, thereby filling the gaps between the doors 12 or between the doors 12 and the cabinet 11. This reduces the direct overflow of gases and other emissions generated by thermal runaway from the gaps. By setting up a pressure relief plate 17, when the pressure or temperature inside the energy storage device reaches a predetermined threshold, the pressure relief plate 17 will activate to directionally discharge gases and other emissions from inside the energy storage device. This can reduce the pressure inside the energy storage device and improve its reliability.

[0184] In some embodiments, such as Figure 13 As shown, a fan 19 can also be installed on the storage unit 10. The number of fans 19 can be one or more. In the event of thermal runaway inside the energy storage device, the fan 19 can quickly expel the combustible gas inside the energy storage device, reducing the risk of energy storage device failure. During normal operation of the energy storage device, the fan 19 can also expel high-temperature gas inside to reduce the internal temperature of the energy storage device.

[0185] According to some embodiments of this application, this application also provides an energy storage system, including a power conversion device and an energy storage device 1 as described in any of the above embodiments, wherein the power conversion device is used to electrically connect a power generation device and an energy storage device 1.

[0186] In some embodiments, such as Figure 14 As shown, the energy storage system may include one or more energy storage devices 1 and a power converter system (PCS), with the PCS connected between the power generation device 3 and the energy storage device 1. The power generation device 3 generates electrical energy, which can be stored in the energy storage device 1 via the power converter system 2. As an example, the power generation device 3 may specifically be a solar panel, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc. The specific type of the power generation device 3 is not limited in this application.

[0187] According to some embodiments of this application, this application also provides a charging network, including a charging pile and an energy storage device 1 or an energy storage system as described in any of the above embodiments, wherein the energy storage device 1 is used to provide electrical energy to the charging pile.

[0188] In some embodiments, such as Figure 15 As shown, the charging network includes a charging pile 4 and an energy storage device 1. The charging pile 4 is electrically connected to the energy storage device 1, which provides power to the charging pile 4. The charging pile 4 is electrically connected to a battery device in the energy storage device 1 via a cable, allowing the battery device to supply its stored energy to the charging pile 4. The charging pile 4 has one or more connectors 5 for connecting to electrical equipment (such as vehicles) to replenish power to the equipment.

[0189] The energy storage device 1 can be located inside the charging pile (e.g., an integrated energy storage and charging unit) or outside the charging pile.

[0190] According to some embodiments of this application, see Figures 1 to 13 This application provides an energy storage device 1, comprising: a storage body 10, the storage body 10 including a cabinet 11 and a door 12, the cabinet 11 having an opening 1001, the door 12 being connected to the cabinet 11 and covering the opening 1001, and a first gap 101 between the door 12 and the cabinet 11; a plurality of battery devices 20 located inside the storage body 10; and a baffle 14 located outside the door 12 and connected to the storage body 10, the baffle 14 covering the first gap 101.

[0191] The energy storage device 1 also includes a first seal 131, which is disposed within the first gap 101, and a baffle 14 covers the first seal 131.

[0192] The area of ​​the opening 1001 of the cabinet 11 has a first side 111. The door 12 is rotatably connected to the cabinet 11 via the first side 111. The baffle 14 includes a first baffle 141, which covers the first gap 101 between the first side 111 and the door 12. The first baffle 141 includes a first plate 1411 and a second plate 1412. The first plate 1411 is fixed to the cabinet 11 or the door 12, and the second plate 1412 is rotatably connected to the first plate 1411.

[0193] The first baffle 141 also includes a rotating pin 1413, and the second plate 1412 is rotatably connected to the first plate 1411 through the rotating pin 1413.

[0194] At least one elastic member 1414 is fitted on the rotating pin 1413, and the at least one elastic member 1414 is used to abut the second plate 1412 against the compartment 10.

[0195] The first plate 1411 is fixed to the cabinet 11, and the second plate 1412 abuts against the door 12.

[0196] The energy storage device also includes an isolation element 15, which is provided between the first baffle 141 and the door 12.

[0197] The area of ​​the opening 1001 of the cabinet 11 also has a second side 112, and the baffle 14 also includes a second baffle 142, which is fixed to the door 12 and covers the first gap 101 between the second side 112 and the door 12.

[0198] The energy storage device also includes an isolation element 15, which is provided between the second baffle 142 and the cabinet 11.

[0199] The energy storage device also includes an isolation element 15, which is provided on the side of the first seal 131 near the interior of the storage unit 10 within the first gap 101.

[0200] Isolation pieces 15 are provided on the side of cabinet 11 near door 12 and on the side of door 12 near cabinet 11. The isolation pieces 15 on cabinet 11 and door 12 are opposite to each other and spaced apart.

[0201] The baffle 14 protrudes away from the first seal 131 and forms a receiving cavity, in which the first seal 131 is partially received.

[0202] The door body 12 includes a first door body 121 and a second door body 122, with a fourth gap 104 between the first door body 121 and the second door body 122, and a second sealing element 132 is provided in the fourth gap 104.

[0203] The energy storage device also includes a third baffle 143, which is fixed to the first door 121 or the second door 122 and covers the second seal 132.

[0204] The third baffle 143 is fixed on the first door 121. The energy storage device also includes an isolation element 15, and an isolation element 15 is provided between the third baffle 143 and the second door 122.

[0205] The energy storage device also includes an isolation element 15, which is provided on the side of the second seal 132 near the interior of the chamber 10 within the fourth gap 104.

[0206] Isolation pieces 15 are provided on the side of the first door 121 near the second door 122 and on the side of the second door 122 near the first door 121. The isolation pieces 15 on the first door 121 and the second door 122 are opposite to each other and spaced apart.

[0207] The insulating element 15 can be made of a thermally expanding material.

[0208] The third baffle 143 protrudes away from the second seal 132 and forms a receiving cavity, in which the second seal 132 is partially received.

[0209] The hull 10 includes multiple doors 12, each of which may be equipped with a pressure relief plate 17 and a flow guide 18, with the flow guide 18 located on the outside of the pressure relief plate 17.

[0210] 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. An energy storage device, characterized in that, include: Storage unit (10), the storage unit (10) includes a cabinet (11) and a door (12), the cabinet (11) has an opening (1001), the door (12) is connected to the cabinet (11), the door (12) covers the opening (1001), and there is a first gap (101) between the door (12) and the cabinet (11); Multiple battery devices (20) located within the housing (10); and A baffle (14) is located on the outside of the door (12) and connected to the compartment (10), and the baffle (14) covers the first gap (101).

2. The energy storage device according to claim 1, characterized in that, The energy storage device further includes a first seal (131), which is disposed within the first gap (101), and the baffle (14) covers the first seal (131).

3. The energy storage device according to claim 1 or 2, characterized in that, The area of ​​the opening (1001) of the cabinet (11) has a first side (111), the door (12) is rotatably connected to the cabinet (11) through the first side (111), the baffle (14) includes a first baffle (141), the first baffle (141) covers the first gap (101) between the first side (111) and the door (12), the first baffle (141) includes a first plate (1411) and a second plate (1412), the first plate (1411) is fixed on the cabinet (11) or the door (12), and the second plate (1412) is rotatably connected to the first plate (1411).

4. The energy storage device according to claim 3, characterized in that, The first baffle (141) further includes a rotating pin (1413), and the second plate (1412) is rotatably connected to the first plate (1411) through the rotating pin (1413).

5. The energy storage device according to claim 4, characterized in that, At least one elastic component (1414) is fitted onto the rotating pin (1413), and the at least one elastic component (1414) is used to abut the second plate (1412) against the chamber body (10).

6. The energy storage device according to claim 5, characterized in that, The first plate (1411) is fixed on the cabinet (11), and the second plate (1412) abuts against the door (12).

7. The energy storage device according to claim 6, characterized in that, The energy storage device also includes an isolation element (15), which is provided between the first baffle (141) and the door (12).

8. The energy storage device according to claim 3, characterized in that, The area of ​​the opening (1001) of the cabinet (11) also has a second side (112), and the baffle (14) further includes a second baffle (142), which is fixed to the door (12) and covers the first gap (101) between the second side (112) and the door (12).

9. The energy storage device according to claim 8, characterized in that, The energy storage device also includes an isolation element (15), which is provided between the second baffle (142) and the cabinet (11).

10. The energy storage device according to claim 2, characterized in that, The energy storage device also includes an isolation element (15), which is provided on the side of the first seal (131) near the interior of the chamber (10) within the first gap (101).

11. The energy storage device according to claim 10, characterized in that, The cabinet (11) is provided with the isolation member (15) on the side of the door (12) and the door (12) is provided with the side of the cabinet (11). The isolation members (15) on the cabinet (11) and the door (12) are arranged opposite to each other and spaced apart.

12. The energy storage device according to claim 2, characterized in that, The baffle (14) protrudes away from the first seal (131) and forms a receiving cavity, in which the first seal (131) is partially received.

13. The energy storage device according to claim 1 or 2, characterized in that, The door body (12) includes a first door body (121) and a second door body (122), and there is a fourth gap (104) between the first door body (121) and the second door body (122), and a second sealing element (132) is provided in the fourth gap (104).

14. The energy storage device according to claim 13, characterized in that, The energy storage device also includes a third baffle (143), which is fixed to the first door (121) or the second door (122) and covers the second seal (132).

15. The energy storage device according to claim 14, characterized in that, The third baffle (143) is fixed on the first door (121), and the energy storage device also includes an isolation component (15), which is provided between the third baffle (143) and the second door (122).

16. The energy storage device according to claim 13, characterized in that, The energy storage device also includes an isolation element (15), which is provided on the side of the second seal (132) near the interior of the chamber (10) within the fourth gap (104).

17. The energy storage device according to claim 16, characterized in that, The isolation member (15) is provided on the side of the first door (121) near the second door (122) and on the side of the second door (122) near the first door (121). The isolation members (15) on the first door (121) and the second door (122) are arranged opposite to each other and spaced apart.

18. The energy storage device according to any one of claims 7, 9-11, and 15-17, characterized in that, The isolation element (15) is made of thermally expanding material.

19. The energy storage device according to claim 14 or 15, characterized in that, The third baffle (143) protrudes away from the second seal (132) and forms a receiving cavity, in which the second seal (132) is partially received.

20. The energy storage device according to claim 1 or 2, characterized in that, The hopper (10) includes a plurality of doors (12), each door (12) being provided with a pressure relief plate (17) and a flow guide (18), the flow guide (18) being disposed on the outside of the pressure relief plate (17).

21. An energy storage system, characterized in that, It includes a power conversion device (2) and an energy storage device (1) according to any one of claims 1 to 20, wherein the power conversion device (2) is used to electrically connect the power generation device (3) and the energy storage device (1).

22. A charging network, characterized in that, The system includes a charging pile (4) and an energy storage device (1) according to any one of claims 1 to 20 or an energy storage system according to claim 21, wherein the energy storage device (1) is used to provide electrical energy to the charging pile (4).

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