Energy storage device, energy storage system with energy storage device, power utilization device and charging network

Abstract

The utility model discloses an energy storage device and an energy storage system, an electric device and a charging network with the energy storage device, the energy storage device comprises a box body with an energy storage cabin, the box body comprises a first door frame and a middle door frame, the first door frame forms a first doorway communicated with the energy storage cabin, and the middle door frame forms a second doorway communicated with the energy storage cabin; the middle door frame is detachably connected with the first door frame and divides the first doorway into a plurality of entrances and exits; the plurality of first door plates are in one-to-one correspondence with the plurality of entrances and exits; the locking structure is suitable for locking the first door plate to the first door frame in the locking state, the locking structure unlocks the first door plate in the unlocking state so that the first door plate can open the corresponding entrance and exit, and the locking structure is configured to be triggered only in the energy storage cabin so that switching between the locking state and the unlocking state can be achieved. According to the energy storage device provided by the utility model, assembling operation, maintenance and debugging operation and the like can be flexibly and conveniently carried out, the energy storage device has better waterproof performance, and the production cost is well reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to an energy storage device, an energy storage system, an electrical device and a charging network having the same. Background Art

[0002] In an energy storage device, structures such as an energy storage cabinet or an energy storage box are usually provided to store energy storage components and supporting electrical components. For example, an energy storage cabinet is provided to store components such as a battery cluster and a power distribution device. Therefore, storage structures such as energy storage cabinets or energy storage boxes need to meet electrical protection requirements such as dust prevention and waterproofing, so that the energy storage device can operate stably and continuously. At present, storage structures such as energy storage cabinets have problems of poor waterproof effect and high production cost. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides an energy storage device, which can have a better waterproof and sealing effect and lower production cost.

[0004] The utility model also provides an energy storage system having the above energy storage device.

[0005] The utility model also provides an electrical device having the above energy storage device.

[0006] The utility model also provides a charging network having the above energy storage device.

[0007] The energy storage device according to the first aspect of the utility model includes: a box body, the box body has an energy storage compartment, the box body includes a first door frame and a middle door frame, the first door frame is arranged on one side of the box body in a first direction, the first door frame forms a first door opening communicating with the energy storage compartment, the middle door frame extends along a second direction and both ends are detachably connected to the first door frame, the middle door frame divides the first door opening into a plurality of inlets and outlets; a plurality of first door panels, the number of the first door panels is multiple and corresponds to the plurality of inlets and outlets one by one, the first door panels are connected to the first door frame and are used for opening and closing the corresponding inlets and outlets; a locking structure, the locking structure has a locked state and an unlocked state, in the locked state, the locking structure is adapted to lock the first door panel to the first door frame, in the unlocked state, the locking structure unlocks the first door panel so that the first door panel can open the corresponding inlet and outlet, wherein, the locking structure is configured to be triggered only inside the energy storage compartment to realize the switching between the locked state and the unlocked state.

[0008] According to the energy storage device of the present utility model, by providing a middle door frame and a locking structure, the middle door frame is detachably connected to the first door frame, and the locking structure is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel, enabling the energy storage device to be assembled, maintained, and debugged flexibly and conveniently. The first door panel can stably and reliably close the first doorway, thereby enabling the energy storage device to have better and more reliable waterproof performance and significantly reducing the production cost of the energy storage device.

[0009] In some embodiments of the present utility model, the middle door frame is snap-connected to the first door frame, and / or the middle door frame is connected to the first door frame by fasteners.

[0010] In this embodiment, the middle door frame and the first door frame are snap-connected, which has a simple structure, stable and reliable connection, and is convenient for disassembling and assembling the middle door frame and the first door frame. Thus, the middle door frame can be quickly disassembled and assembled when equipment or personnel enter or exit the first doorway, making the assembly, maintenance, and other operations of the energy storage device more flexible and convenient. When the middle door frame and the first door frame are connected by fasteners, connection holes or mating hole structures for the fasteners can be provided on the middle door frame and the first door frame, and the fasteners can pass through the connection hole structure or the mating hole structure to connect and fix the middle door frame and the first door frame.

[0011] In an embodiment of the present utility model, one of the middle door frame and the first door frame is provided with a snap member and the other forms a snap portion, and the middle door frame and the first door frame are snap-connected by the cooperation of the snap member and the snap portion.

[0012] In this embodiment, the middle door frame and the first door frame are snap-connected by the cooperation of the snap member and the snap portion, which has a simple structure and is convenient for assembly, and can well meet the need for quick disassembly and assembly of the middle door frame.

[0013] In some examples of the present utility model, the snap member includes a snap base and a snap rod. The snap base is fixed to the middle door frame, the snap rod is provided on the snap base, and in the second direction, the snap rod is movable between a first position and a second position. The snap portion is provided on the first door frame and forms a snap hole. In the first position, a part of the snap rod extends into the snap hole, and in the second position, the snap rod disengages from the snap hole.

[0014] In this embodiment, the clamping member is fixed to the middle door frame. The clamping member includes a clamping seat and a clamping rod, enabling the clamping rod to be stably and firmly fixed to the middle door frame through the clamping seat. A clamping portion is formed on the first door frame and the clamping portion is formed as a clamping hole. The structure is simple. When disassembling and assembling the middle door frame and the first door frame, a clamping connection can be formed or the clamping connection can be disconnected by moving the clamping rod. The operation is convenient and easy. The clamping hole is provided on the first door frame, which can keep the position of the clamping hole fixed, so that the clamping rod can be easily positioned at the clamping hole and extend into the clamping hole for clamping following the movement of the middle door frame, thus making the assembly of the middle door frame and the first door frame more convenient.

[0015] In an example of the present utility model, the clamping member further includes a first elastic member. The first elastic member is connected between the clamping seat and the clamping rod, and the first elastic member is used to push the clamping rod to move from the second position to the first position.

[0016] In this embodiment, the first elastic member is provided in the clamping member. The first elastic member can exert a thrust on the clamping rod, enabling the clamping rod to stably and reliably cooperate with the clamping hole for clamping, so that the clamping member can cooperate with the clamping hole to form a self-locking structure, thereby making the overall structural stability and reliability of the middle door frame and the first door frame better after clamping connection, reducing the risk of the middle door frame accidentally disengaging from the first door frame during long-term use, and thus making the overall structural stability of the energy storage device better and the waterproof performance more stable and reliable.

[0017] In some examples of the present utility model, the clamping members are provided at both ends of the middle door frame in the second direction.

[0018] In this embodiment, the clamping members are provided at both ends of the middle door frame for clamping connection with the first door frame. The structure is simple, enabling both ends of the middle door frame to be clamped and fixed, so that the middle door frame can be stably and reliably clamped and fixed on the first door frame, making the overall structure of the middle door frame and the first door frame more stable and facilitating the sealing cooperation between the first door panel and the middle door frame.

[0019] In an example of the present utility model, a plurality of the clamping members are provided at any one end of the middle door frame in the second direction. The plurality of clamping members are arranged in the third direction, and the third direction intersects with the second direction and the first direction pairwise.

[0020] In this embodiment, a plurality of clamping members are provided at any one end of the middle door frame. The plurality of clamping members can cooperate to stably and reliably fix one end of the middle door frame to the first door frame, reducing the probability of the middle door frame deflecting and misaligning, enabling the middle door frame to cooperate with the first door frame to form a surface that can cooperate well with the first door panel on one side in the first direction, and enabling the first door panel to cooperate with the middle door frame to stably and reliably close the inlet and outlet.

[0021] In some embodiments of the present utility model, the locking structure is a bolt structure.

[0022] In this embodiment, the locking structure is set as a latch structure, which has a simple structure, is easy to operate, can lock the first door panel and the first door frame reliably and stably, is easy to maintain, and has low cost.

[0023] In one embodiment of the utility model, the locking structure includes: a lock body, which is fixed to the first door panel; a locking rod, which is arranged on the lock body and extends along the second direction, in which the locking rod can move between a third position and a fourth position relative to the lock body, in which the third position is that a part of the locking rod abuts against a side of the first door frame in the first direction away from the first door panel, and in the fourth position, the locking rod is detached from the first door frame; a second elastic member, which is connected between the locking rod and the lock body, and which is used to push the locking rod to move from the fourth position to the third position.

[0024] In this embodiment, a lock rod, a lock body and a second elastic member are provided to cooperate to lock or unlock the first door panel and the first door frame. The structure is simple, the cost is low, the operation is convenient and easy, and the first door panel can be locked stably and reliably, thus meeting the use requirements well.

[0025] In some embodiments of the present invention, the locking structure is provided at both ends of the first door panel in the second direction.

[0026] In this embodiment, locking structures are provided at both ends of the first door panel in the second direction, so that the two ends of the first door panel in the second direction can be stably and reliably locked and fixed to the first door frame under the locking action of the locking structure, so that the first door panel can stably and reliably close the inlet and outlet, and the end of the first door panel that cooperates with the middle door frame can cooperate with the middle door frame more stably, so that the first door panel and the inlet and outlet can form a more stable and reliable sealing cooperation structure, so that the energy storage device can have better waterproof performance.

[0027] In some embodiments of the utility model, the number of the middle door frame is one and extends along the second direction to separate the first doorway into the two entrances and exits arranged side by side in the third direction, and the second direction is the up-down direction.

[0028] In this embodiment, the number of middle door frames is one, which is relatively small, so that when assembling or maintaining the energy storage device, the middle door frames can be quickly and conveniently removed, thereby making the assembly or maintenance operation more efficient and convenient. In this embodiment, the first direction is set to the up-down direction, which makes it easier to open and close the first door panel.

[0029] In one embodiment of the utility model, the side of the first door panel in the third direction away from the middle door frame is rotatably connected to the first door frame, and the locking structure is provided on the side of the first door panel in the third direction close to the middle door frame.

[0030] In this embodiment, the locking structure is arranged on the side of the first door panel close to the middle door frame, so that the locking structure can cooperate with the connection structure between the first door panel and the first door frame on the other side of the third direction, and the first door panel can be stably and reliably locked and fixed to the first door frame and the middle door frame in the third direction, so that the first door panel can stably and reliably close the entrance and exit, and the energy storage device can have good waterproof performance.

[0031] In some embodiments of the utility model, the energy storage device also includes a plurality of seals, the plurality of seals corresponding one by one to a plurality of inlets and outlets, the seals extending in a ring shape along the corresponding inlets and outlets, and when the first door panel closes the inlets and outlets, the seals are sealed and connected between the first door panel and the box body.

[0032] In this embodiment, a sealing member is provided between the first door panel and the box body, and the sealing member is arranged in one-to-one correspondence with the multiple inlets and outlets and extends in a ring shape along the inlets and outlets, so that the first door panel can form a stable and reliable seal with the first door frame and the middle door frame of the box body after closing the inlets and outlets, so that the first door panel can completely seal the inlets and outlets along the circumference of the inlets and outlets, so that the multiple first door panels cooperate with the middle door frame to stably and reliably seal the first door door, so that the energy storage cabin can obtain a stable and reliable sealing effect, and the energy storage device can have good waterproof performance.

[0033] In one embodiment of the utility model, the sealing member includes: a fixing portion, the fixing portion is provided with a fixing groove, the first door frame and the middle door frame are both formed with a fixing flange, the fixing flange portion extends into the fixing groove to be fixedly connected with the fixing portion; a deformation portion, the deformation portion is connected to the fixing portion and is located between the fixing flange and the first door panel, the deformation portion has a deformation cavity and is suitable for abutting against the first door panel.

[0034] In this embodiment, the seal is provided with a fixed part and a deformable part, and the structure is simple. The fixed part is provided with a fixed groove, and the first door frame and the middle door frame are provided with fixed flanges. The structure is simple, so that the seal can be conveniently and reliably fixed to the first door frame and the middle door frame, so that the assembly of the seal and the box body is more convenient. The deformable part is provided with a deformation cavity, which can reserve a good deformation space for the deformation part between the first door panel and the first door frame and between the first door panel and the middle door frame when the deformation occurs, so that the deformation part can stably deform to reliably abut and seal with the first door panel, so that the sealing effect of the seal is better, and then the waterproof performance of the energy storage component is better.

[0035] In one embodiment of the present invention, in the first direction, the ratio of the thickness of the sealing component after elastic deformation to the initial thickness of the sealing component is greater than or equal to 0.25 and less than or equal to 0.35.

[0036] In this embodiment, the ratio of the thickness of the seal after elastic deformation to the initial thickness of the seal is set to be greater than or equal to 0.25, so that the seal can have sufficient deformation, so that the seal can have a stable and good sealing effect, so that the energy storage device has good sealing and waterproof performance at the first door panel; the ratio of the thickness of the seal after elastic deformation to the initial thickness of the seal is set to be less than or equal to 0.35, so that the seal can have a good sealing effect while reducing the probability of excessive deformation of the seal, resulting in rapid attenuation of sealing performance, reduced service life and structural damage, so that during long-term use of the seal and multiple openings and closings of the first door panel, the seal can always maintain good sealing performance, so that the seal can have a longer service life and the sealing is more stable and reliable, which can reduce maintenance costs to a certain extent.

[0037] In some embodiments of the present invention, the middle door frame is an aluminum part.

[0038] In this embodiment, the middle door frame is set as an aluminum part, which can meet the need of lightweight, make the middle door frame lighter, facilitate the disassembly and assembly and use of the middle door frame, and have good structural strength, thereby meeting the need for sealing with the first door panel and the seal.

[0039] In some embodiments of the present invention, a first handle is provided on a side of the first door panel facing the first doorway.

[0040] In this embodiment, a first handle is provided on the side of the first door panel facing the first door opening, which can facilitate opening and closing of the first door panel and make it more convenient to perform maintenance and debugging of the energy storage device.

[0041] In some embodiments of the present invention, a second handle is provided on a side of the middle door frame facing away from the first door panel.

[0042] In this embodiment, a second handle is provided on the side of the middle door frame away from the first door panel, which has a simple structure and makes it more convenient to disassemble and use the middle door frame, thereby making it more convenient to maintain and debug the energy storage device.

[0043] In some embodiments of the present utility model, the box body includes: a bottom plate and a first vertical beam, the first vertical beam extends vertically and its lower end is connected to the bottom plate, the number of the first vertical beams is two, and the two first vertical beams are arranged at intervals along a third direction; a wind hood plate, the wind hood plate extends along the third direction and its two ends are respectively connected to the two first vertical beams, and the wind hood plate, the bottom plate and the two first vertical beams jointly form the first door frame.

[0044] In this embodiment, the box body is provided with a bottom plate, a first vertical beam and a wind hood plate to cooperate to form the first door frame. The structure is simple, which can well meet the assembly requirements of the box body, and makes the overall structure of the first door frame have good stability and reliability, so that the first door panel can be stably assembled and fixed to the first door frame.

[0045] In some embodiments of the present utility model, on the other side of the box body in the first direction, there is a second door opening communicating with the energy storage cabin. The energy storage device further includes a second door panel, the second door panel is rotatably connected to the box body for opening and closing the second door opening, and the energy storage device further includes: a lock rod structure, the lock rod structure is arranged on the outer side of the box body and is configured to lock the second door panel to the box body when the second door panel closes the second door opening.

[0046] In this embodiment, a second door opening and a second door panel are provided on the other side of the box body in the first direction. The second door panel is locked by a lock rod structure, and the lock rod structure is arranged on the outer side of the box body. The structure is simple, which can well meet the needs of equipment personnel and others to enter the energy storage cabin and the waterproof requirements of the energy storage device, and can cooperate with the first door panel and the first door opening, so that the energy storage device can allow personnel and equipment to enter and exit on both sides in the second direction, making the energy storage device more convenient and flexible during maintenance operations or commissioning operations, etc.

[0047] The energy storage system according to the second aspect of the present utility model includes: a power conversion device and the energy storage device according to the first aspect of the present utility model, and the power conversion device is used for electrically connecting a power generation device and the energy storage device.

[0048] According to the energy storage system of the present utility model, by providing the energy storage device of the above first aspect, the energy storage device is provided with a middle door frame and a locking structure. The middle door frame is detachably connected to the first door frame, and the locking structure is configured to be triggered only inside the energy storage cabin to lock or unlock the first door panel, so that the energy storage device can be flexibly and conveniently assembled and maintained and debugged, etc., and the first door panel can stably and reliably close the first door opening, so that the energy storage device can have better and more reliable waterproof performance, and the production cost of the energy storage device can be well reduced.

[0049] The electrical device according to the third aspect of the present utility model includes the energy storage device according to the first aspect of the present utility model or the energy storage system according to the second aspect of the present utility model, and the energy storage device is used to store or provide electric energy.

[0050] According to the electrical device of the present utility model, by providing the energy storage device of the first aspect or the energy storage system of the second aspect above, the energy storage device is provided with a middle door frame and a locking structure. The middle door frame is detachably connected to the first door frame, and the locking structure is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel, enabling the energy storage device to be assembled, maintained, debugged, etc. flexibly and conveniently, enabling the first door panel to stably and reliably close the first doorway, so that the energy storage device can have better and more reliable waterproof performance, and the production cost of the energy storage device can be well reduced.

[0051] The charging network according to the fourth aspect of the present utility model includes: a charging pile; the energy storage device according to the first aspect of the present utility model or the energy storage system according to the second aspect of the present utility model, and the energy storage device is used to provide electric energy for the charging pile.

[0052] According to the charging network of the present utility model, by providing the energy storage device of the first aspect or the energy storage system of the second aspect above, the energy storage device is provided with a middle door frame and a locking structure. The middle door frame is detachably connected to the first door frame, and the locking structure is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel, enabling the energy storage device to be assembled, maintained, debugged, etc. flexibly and conveniently, enabling the first door panel to stably and reliably close the first doorway, so that the energy storage device can have better and more reliable waterproof performance, and the production cost of the energy storage device can be well reduced.

[0053] The additional aspects and advantages of the present utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0054] Figure 1 is a schematic diagram of the charging network according to an embodiment of the present utility model;

[0055] Figure 2 is a schematic diagram of the energy storage system according to an embodiment of the present utility model;

[0056] Figure 3 is a schematic diagram of the energy storage device according to an embodiment of the present utility model;

[0057] Figure 4 is a schematic diagram of the energy storage device according to an embodiment of the present utility model from a second angle;

[0058] Figure 5It is a schematic diagram of the energy storage device according to the third angle of the embodiment of the present utility model;

[0059] Figure 6 It is a schematic diagram of the energy storage device according to the fourth angle of the embodiment of the present utility model;

[0060] Figure 7 It is a schematic diagram of the energy storage device according to the fifth angle of the embodiment of the present utility model;

[0061] Figure 8 It is Figure 7 A schematic diagram at the first door panel after sectioning at A-A shown in

[0062] Figure 9 It is Figure 8 A partially enlarged schematic diagram at B shown in

[0063] Figure 10 It is a schematic diagram of the energy storage device according to the sixth angle of the embodiment of the present utility model;

[0064] Figure 11 It is a schematic diagram of the energy storage device after removing the first door panel according to the embodiment of the present utility model;

[0065] Figure 12 It is Figure 11 A partially enlarged schematic diagram at C shown in

[0066] Figure 13 It is a schematic diagram of the cross-section after the fixed flange of the first door panel and the fixed flange of the first door frame and the fixed flange of the middle door frame of the energy storage device according to the embodiment of the present utility model are assembled;

[0067] Figure 14 It is Figure 13 A partially enlarged schematic diagram at D shown in

[0068] Reference numerals:

[0069] 10. Energy storage device; 101. Fixed flange;

[0070] 11. Box body; 1101. Inlet and outlet; 111. First vertical beam; 112. Wind hood plate; 113. Bottom plate; 114. Middle door frame;

[0071] 12. First door panel; 13. Locking structure; 131. Lock body; 132. Lock rod;

[0072] 14. Clamping member; 141. Clamping seat; 142. Clamping rod;

[0073] 15. Sealing member; 151. Fixed part; 152. Deformed part;

[0074] 16. Second door panel; 17. Lock rod structure;

[0075] 20. Power generation device; 30. Power conversion device;

[0076] 100. Energy storage system; 200. Charging pile; 300. Connector;

[0077] 1000. Charging network. Detailed implementation manners

[0078] Hereinafter, embodiments of the technical solutions of the present utility model will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0079] If there is no special description, all embodiments and optional embodiments of the present utility model can be combined with each other to form new technical solutions.

[0080] If there is no special description, all technical features and optional technical features of the present utility model can be combined with each other to form new technical solutions.

[0081] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the description and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion.

[0082] In the description of the embodiments of the present utility model, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0083] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0084] In the description of the embodiments of the present utility model, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0085] In the description of the embodiments of the present utility model, the term "plurality" refers to two or more (including two).

[0086] In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by technical terms such as "width", "thickness", "upper", "lower", "front", "rear", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.

[0087] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0088] At present, from the perspective of the development of the market situation, energy storage devices are more and more widely used. Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. Energy storage devices can store electrical energy as needed and output electrical energy at an appropriate time. For example, energy storage devices can store electrical energy during low electricity consumption periods and provide electrical energy to relevant users or electrical equipment during high electricity consumption periods. The energy storage system provided by the embodiments of the present utility model can be any power system that requires the use of energy storage devices.

[0089] The energy storage device can be an energy storage container or an energy storage electrical cabinet. The energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are accommodated in the cabinet body. The battery cluster can include a plurality of battery devices, and the plurality of battery devices are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0090] The Battery Apparatus may include one or more battery cell assemblies for providing voltage and capacity. The Battery Cell Assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel or in a combined series-parallel manner through a busbar component. The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium-metal batteries, sodium-metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., and the embodiments of the present utility model do not limit this.

[0091] The energy storage device may include modules such as a thermal management module, a main control module, a general control module, a power distribution module, and a fire protection module.

[0092] As an example, the thermal management module may include a liquid cooling unit, and the liquid cooling unit provides coolant for adjusting the temperature of the battery cells to each battery device through pipelines.

[0093] As an example, the main control module may serve as the battery management unit of the battery cluster for monitoring and managing the battery cluster. The main control module can monitor information such as the current, voltage, power or temperature of the battery cluster. For example, it can control the charge and discharge current, voltage, etc. of the battery cluster. The main control module includes modules such as an auxiliary battery management unit SBMU (Slave Battery Management Unit, SBMU) and a fusion switch.

[0094] As an example, the general control module may serve as the battery management unit of the energy storage device for monitoring and managing the energy storage device. The general control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage device. For example, it can control the charge and discharge current, voltage, etc. of the energy storage device. As an example, the general control module includes modules such as an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a main battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and an optical fiber conversion module.

[0095] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc. for detecting, alarming or extinguishing fires in the energy storage system.

[0096] As an example, the power distribution device can be used to distribute power to the power-consuming modules of the energy storage device.

[0097] To facilitate the assembly of the battery cluster within the cabinet and the subsequent maintenance of the energy storage device, multiple cabinet doors are provided on the cabinet of the energy storage device. The cabinet doors adopt a double-door structure with an opposing opening form to create a relatively large access space, facilitating the flexible entry of components or equipment such as the battery cluster into the cabinet for assembly, and enabling assembly personnel or maintenance personnel to enter the cabinet for operation and maintenance tasks.

[0098] For the needs of daily maintenance, all the cabinet doors on the cabinet are operated and opened from the outside, so that maintenance personnel can open the cabinet doors to check or maintain components and equipment such as the battery cluster and electrical components inside the cabinet. A mesh door needs to be added to the back side of the cabinet door. The mesh door has the functions of preventing electric shock and cutting off power when opening the mesh door, so as to reduce the risk of electric shock to maintenance personnel when the energy storage device is under load. However, the added mesh door occupies a certain space inside the cabinet, increasing the amount of the mesh door structure and structural components, increasing the material cost of the energy storage device, and thus increasing the production cost of the energy storage device.

[0099] The cabinet doors adopt a double-door structure with an opposing opening form. Under the influence of processing and assembly errors, transportation, etc., and the influence of the deformation of the hinges connecting the cabinet doors and the cabinet on the cooperation between the cabinet doors and the cabinet, the fitting error at the middle gap of the cabinet doors is relatively large, resulting in poor sealing and waterproof performance at the middle gap of the cabinet doors, poor waterproof performance of the energy storage device, and poor waterproof reliability.

[0100] Based on the above considerations, in order to improve the waterproof performance and waterproof reliability of the energy storage device and reduce the production cost of the energy storage device, the present utility model proposes an energy storage device. By setting that the first door panel can only be opened from the energy storage compartment through a locking structure, the import and export formed by the cooperation of the first door panel with the first door frame and the middle door frame correspond one by one, and the middle door frame and the first door frame are detachable, so that the energy storage device can have better and more reliable waterproof performance and lower production cost while facilitating assembly, maintenance and other operations.

[0101] The following refers to Figures 3 - 14 Describe the energy storage device 10 according to the first aspect embodiment of the present utility model. Figure 3 is a schematic diagram of the energy storage device 10 according to the embodiment of the present utility model; Figure 4 is a schematic diagram of the energy storage device 10 from a second angle according to the embodiment of the present utility model; Figure 5 is a schematic diagram of the energy storage device 10 from a third angle according to the embodiment of the present utility model; Figure 6 is a schematic diagram of the energy storage device 10 from a fourth angle according to the embodiment of the present utility model; Figure 7 is a schematic diagram of the energy storage device 10 from a fifth angle according to the embodiment of the present utility model; Figure 8 is Figure 7 a schematic diagram at the first door panel 12 after sectioning at A-A shown in Figure 9Yes Figure 8 A partial enlarged schematic view at position B shown in Figure 10 A schematic view of the energy storage device 10 according to an embodiment of the present invention from a sixth angle; Figure 11 A schematic view of the energy storage device 10 according to an embodiment of the present invention after removing the first door panel 12; Figure 12 Yes Figure 11 A partial enlarged schematic view at position C shown in Figure 13 A schematic cross-sectional view of the assembly of the fixed flange 101 of the first door panel 12 and the first door frame and the fixed flange 101 of the middle door frame 114 in the energy storage device 10 according to an embodiment of the present invention; Figure 14 Yes Figure 13 A partial enlarged schematic view at position D shown in

[0102] As Figures 3 - 14 shown, the energy storage device 10 according to the first aspect embodiment of the present invention includes: a box body 11, a first door panel 12, and a locking structure 13.

[0103] Specifically, the box body 11 has an energy storage compartment. The box body 11 includes a first door frame and a middle door frame 114. The first door frame is provided on one side of the box body 11 in a first direction (such as Figure 3 the x direction shown), and the first door frame forms a first door opening communicating with the energy storage compartment. The middle door frame 114 extends in a second direction (such as Figure 3 the z direction shown) and is detachably connected to the first door frame at both ends. The middle door frame 114 divides the first door opening into a plurality of inlets and outlets 1101. The number of the first door panels 12 is multiple and corresponds to the plurality of inlets and outlets 1101 one by one. The first door panel 12 is connected to the first door frame and is used to open and close the corresponding inlets and outlets 1101. The locking structure 13 has a locked state and an unlocked state. In the locked state, the locking structure 13 is adapted to lock the first door panel 12 to the first door frame. In the unlocked state, the locking structure 13 unlocks the first door panel 12 so that the first door panel 12 can open the corresponding inlets and outlets 1101. Among them, the locking structure 13 is configured to be triggered only inside the energy storage compartment to realize the switching between the locked state and the unlocked state.

[0104] In this embodiment, a box body 11 is provided. The box body 11 has an energy storage compartment. The box body 11 can be assembled from structural members such as multiple plate members, cross beams, and longitudinal beams. The size of the box body 11 can be set as required. Exemplarily, box door structures can be provided on the peripheral sides of the box body 11. The box doors can be arranged oppositely on both sides in the same direction of the box body 11. The energy storage compartment of the box body 11 can be divided into multiple compartments according to the arrangement of equipment. Different compartments can correspond to different box door structures or multiple box door structures. Some of the box door structures can form a first door panel 12. Multiple structural members such as plate members, cross beams, and longitudinal beams can cooperate to form a door frame structure that cooperates with the box door structure. Some of the door frame structures can form a first door frame. Specifically, the first door frame is formed on one side of the box body 11 in the first direction. The size of the first door frame can be set according to assembly requirements and the needs of operations such as maintenance operations.

[0105] In this embodiment, the first door frame is formed with a first doorway. The first doorway communicates with the energy storage compartment. For example, the first doorway can communicate with the compartment for storing battery clusters in the energy storage compartment in the first direction. When the energy storage device 10 is assembled, the battery clusters can be assembled into the energy storage tank from the outside through the first doorway. The size of the first doorway can be set according to the size of the equipment or device to be assembled, etc., so that the equipment can be conveniently and flexibly assembled into the energy storage device 10, and it is more convenient for the energy storage device 10 to perform operations such as maintenance and debugging.

[0106] In this embodiment, a middle door frame 114 is provided. The middle door frame 114 is detachably connected to the first door frame. For example, the middle door frame 114 and the first door frame can adopt connection methods such as fastening connection, snap connection, and pin connection. The two ends of the middle door frame 114 in the second direction can be in close contact with the first door frame. The surface of the middle door frame 114 facing the first door panel 12 can form a smooth connection surface with the surface of the first door frame facing the first door panel 12 in the first direction.

[0107] The middle door frame 114 divides the first doorway into multiple inlets and outlets 1101. The first door panel 12 is arranged corresponding to the inlets and outlets 1101. After the first door panel 12 is assembled onto the box body 11, the first door panel 12 is connected to the first door frame to open and close the inlets and outlets 1101. After the first door panel 12 closes the inlets and outlets 1101, the first door panel 12 can cooperate with the first door frame and the middle door frame 114 to close the water inlet. The first door panel 12 can have a quantity of two, three, four, etc. The inlets and outlets 1101 are correspondingly formed with two, three, four, etc. The middle door frame 114 can be correspondingly provided with one, two, three, etc. In the arrangement direction of the multiple first door panels 12, the width dimension of the middle door frame 114 can be reasonably set as required.

[0108] The sizes of the multiple inlets and outlets 1101 can be the same or different, and the sizes of the multiple first door panels 12 corresponding to the inlets and outlets 1101 can also be correspondingly the same or different.

[0109] In this embodiment, a locking structure 13 is provided. Exemplarily, the locking structure 13 can be a mechanically operated mechanical lock structure or an electronically controlled electronic lock structure. The locking structure 13 has a locked state and an unlocked state. In the locked state, the first door panel 12 is locked to the first door frame, so that the first door panel 12 cooperates with the first door frame and the middle door frame 114 to close the inlet / outlet 1101. In the unlocked state, the first door panel 12 is opened, and the inlet / outlet 1101 communicates the external space with the energy storage compartment. Among them, the locking structure 13 is configured to be actuated only inside the energy storage compartment to realize the switching between the locked state and the unlocked state. That is to say, when the energy storage device 10 needs to open the first door panel 12 provided with the locking structure 13, the locking structure 13 needs to be controlled from inside the energy storage compartment. When the first door panel 12 needs to close and lock the inlet / outlet 1101, the locking structure 13 also needs to be controlled from inside the energy storage compartment to lock the first door panel 12.

[0110] For example, when the first door panel 12 needs to be opened to open the inlet / outlet 1101, the operator can first open other door structures of the box to enter the energy storage compartment. After the operator enters the energy storage compartment, the locking structure 13 is operated to switch the locking structure 13 from the locked state to the unlocked state, so that the first door panel 12 is opened. When the first door panel 12 is closed, the operator manipulates the locking structure 13 inside the energy storage compartment to switch to the locked state, so that the first door panel 12 is closed.

[0111] In this embodiment, the setting of the middle door frame 114 can cooperate with the first door frame to provide complete circumferential support for the first door panel 12, so that the first door panel 12 can cooperate with the middle door frame 114 and the first door frame to stably and reliably perform the closing operation along the circumference of the inlet / outlet 1101. Thus, under the influence of machining and assembly errors, transportation, etc., when there is a large assembly error between the first door panel 12 and the adjacent first door panel 12 at the middle door frame 114, the two first door panels 12 can still have stable and reliable waterproof performance for the inlet / outlet 1101 under the closing action of the middle door frame 114. For example, after the first door panel 12 is assembled with the first door frame, when one end of the first door panel 12 facing the adjacent first door panel 12 is not in the preset assembly position in the arrangement direction of the first door panel 12, due to the existence of the middle door frame 114, the first door panel 12 can still be fitted to the middle door frame 114, so that the first door panel 12 can cooperate with the middle door frame 114 at the middle door frame 114 to form a stable and good waterproof effect, enabling the first door panel 12 to stably close the first doorway.

[0112] In this embodiment, by providing the middle door frame 114, the first door panel 12 can cooperate with the first door frame and the middle door frame 114 to form a stable and reliable waterproof function, so that the waterproof performance of the energy storage device 10 is better and more reliable.

[0113] Since the middle door frame 114 divides the first doorway into multiple entrances and exits 1101, when equipment components such as battery clusters are assembled into the energy storage compartment through the first doorway or removed from the energy storage compartment for maintenance and other operations, some equipment components with larger dimensions cannot pass through the smaller entrances and exits 1101. As a result, the equipment components need to be assembled or disassembled by means of top lifting, etc., leading to poor flexibility and inconvenient operation during the assembly or maintenance and debugging of the energy storage device 10. In this embodiment, the middle door frame 114 and the first door frame are set to be detachably connected, and the middle door frame 114 can be removed from the first door frame, enabling the equipment components to pass through smoothly, so that the energy storage device 10 can still be conveniently and flexibly assembled and maintained and debugged, etc.

[0114] In this embodiment, the first door panel 12 is unlocked or locked with the first door frame through the locking structure 13. The locking structure 13 is configured to be triggered only from inside the energy storage compartment to switch between the locked state and the unlocked state, so that the first door panel 12 cannot be opened or closed from the outside of the box body 11. As a result, the setting of the screen door can be omitted on the first door panel 12, and the amount of structural parts required for installing the entire set of screen door panels of the energy storage components can be saved, thereby effectively reducing the materials used in the energy storage device 10 and greatly reducing the production cost of the energy storage device 10. Since the screen door at the first door panel 12 is cancelled, the electrical clearance of the screen door can be ignored when designing the first door panel 12 of the energy storage device 10. Thus, the structures such as the first door panel 12 and the first door frame can be simplified to a certain extent during design, and to a certain extent, the materials used in the energy storage device 10 can be further reduced, and the production cost of the energy storage device 10 can be further reduced.

[0115] According to the energy storage device 10 of the embodiment of the present invention, by providing the middle door frame 114 and the locking structure 13, the middle door frame 114 is detachably connected to the first door frame, and the locking structure 13 is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel 12, enabling the energy storage device 10 to be assembled, maintained, and debugged, etc. flexibly and conveniently, enabling the first door panel 12 to stably and reliably close the first doorway, so that the energy storage device 10 can have better and more reliable waterproof performance, and the production cost of the energy storage device 10 is greatly reduced.

[0116] In some embodiments of the present invention, as Figure 11 and Figure 12 shown, the middle door frame 114 and the first door frame can be connected by snap connection.

[0117] In this embodiment, the middle doorframe 114 is snap-connected to the first doorframe. For example, the middle doorframe 114 and the first doorframe may be respectively provided with a matching slot structure and a snap structure. The middle doorframe 114 and the first doorframe are connected and fixed through the cooperation of the slot structure and the snap structure. The end face of the middle doorframe 114 can be attached to the surface of the first doorframe to form a stable connection structure with the first doorframe.

[0118] The slot structure or the snap structure can be arranged on one or both sides in the thickness direction of the middle doorframe 114. The slot structure or the snap structure can also be arranged on one or both sides in the width direction of the middle doorframe 114 (such as Figure 11 the y direction shown). One or more slot structures can be respectively provided at both ends of the middle doorframe 114 to cooperate with the snap structure on the first doorframe for snap connection and fixation. One or more snap structures can also be respectively provided at both ends of the middle doorframe 114 to cooperate with the slot structure on the first doorframe for snap connection and fixation. One or more slot structures and snap structures can also be respectively arranged at both ends of the middle doorframe 114 to cooperate with the corresponding snap structure and slot structure on the first doorframe for snap connection and fixation.

[0119] In this embodiment, the middle doorframe 114 and the first doorframe are set to be snap-connected, with a simple structure, stable and reliable connection, and convenient for the disassembly and assembly of the middle doorframe 114 and the first doorframe. Thus, the middle doorframe 114 can be quickly disassembled and assembled when the equipment or personnel enter or exit the first door, making the assembly or maintenance operations of the energy storage device 10 more flexible and convenient.

[0120] In some embodiments of the present utility model, the middle doorframe 114 and the first doorframe can be connected by fasteners.

[0121] In this embodiment, the middle doorframe 114 and the first doorframe are set to be connected by fasteners. Connection holes or mating hole structures for the fasteners can be provided on the middle doorframe 114 and the first doorframe. The fasteners can pass through the connection hole structure or the mating hole structure to connect and fix the middle doorframe 114 and the first doorframe.

[0122] In this embodiment, the middle doorframe 114 and the first doorframe are connected by fasteners, with a simple structure, stable and reliable connection and fixation, enabling the middle doorframe 114 to stably cooperate with the first door panel 12 to close the first door, and making the disassembly and assembly of the middle doorframe 114 and the first doorframe relatively convenient and easy, thus making the assembly or maintenance operations of the energy storage device 10 more flexible and convenient.

[0123] In some embodiments of the present utility model, the middle doorframe 114 and the first doorframe can be snap-connected, and the middle doorframe 114 and the first doorframe can be connected by fasteners.

[0124] In this embodiment, the middle door frame 114 is snap-connected to the first door frame and connected by fasteners. The connection between the middle door frame 114 and the first door frame adopts both snap connection and fastener connection at the same time, so that the middle door frame 114 and the first door frame can be disassembled and assembled more flexibly under the condition of good connection stability, thus making the energy storage device 10 more convenient and flexible during assembly or maintenance operations.

[0125] In an embodiment of the present invention, referring to Figure 11 and Figure 12 as shown, one of the middle door frame 114 and the first door frame may be provided with a snap connector 14 and the other may be formed with a snap portion. The middle door frame 114 and the first door frame are snap-connected by the cooperation of the snap connector 14 and the snap portion.

[0126] When the middle door frame 114 is provided with the snap connector 14, the first door frame may correspondingly be formed with a snap portion. When the middle door frame 114 is formed with a snap portion, the first door frame may correspondingly be provided with the snap connector 14. The middle door frame 114 and the first door frame are snap-connected by the cooperation of the snap connector 14 and the snap portion.

[0127] In this embodiment, the middle door frame 114 and the first door frame are snap-connected by the cooperation of the snap connector 14 and the snap portion. The structure is simple and the assembly is convenient, which can well meet the need for quick disassembly and assembly of the middle door frame 114.

[0128] In some examples of the present invention, referring to Figure 12 as shown, the snap connector 14 may include: a card seat 141 and a card rod 142. The card seat 141 is fixed to the middle door frame 114, and the card rod 142 is arranged on the card seat 141. In the second direction, the card rod 142 is movable between a first position and a second position. The snap portion is arranged on the first door frame and formed as a card hole. In the first position, a part of the card rod 142 extends into the card hole, and in the second position, the card rod 142 disengages from the card hole.

[0129] When the middle door frame 114 and the first door frame are assembled, the card rod 142 can move from the second position to the first position along the second direction, so that the card rod 142 extends into the card hole for cooperation, thereby fixing the middle door frame 114 and the first door frame by snap connection. When the middle door frame 114 is detached from the first door frame, the card rod 142 can move from the first position to the second position, so that the card rod 142 disengages from the card hole, thereby removing the middle door frame 114 from the first door frame.

[0130] In this embodiment, the clamping member 14 is fixed on the middle door frame 114. The clamping member 14 includes a clamping seat 141 and a clamping rod 142, so that the clamping rod 142 can be stably and reliably fixed to the middle door frame 114 through the clamping seat 141. A clamping portion is formed on the first door frame and the clamping portion is formed as a clamping hole. The structure is simple. When the middle door frame 114 and the first door frame are disassembled and assembled, a clamping connection or a disconnection of the clamping connection can be formed through the movement of the clamping rod 142. The operation is convenient and easy. The clamping hole is arranged on the first door frame, so that the position of the clamping hole can be kept fixed, so that the clamping rod 142 can conveniently and easily be positioned at the clamping hole and extend into the clamping hole for clamping along with the movement of the middle door frame 114, thereby making the assembly of the middle door frame 114 and the first door frame more convenient.

[0131] In an example of the present utility model, the clamping member 14 may further include a first elastic member. The first elastic member is connected between the clamping seat 141 and the clamping rod 142. The first elastic member is used to push the clamping rod 142 to move from a second position to a first position.

[0132] In this embodiment, the clamping member 14 is provided with a first elastic member. The first elastic member is used to push the clamping rod 142 to move from a second position to a first position. The first elastic member may be an elastic component, such as a spring, rubber and other components. The first elastic member elastically deforms along a second direction. When the clamping member 14 is in an initial state, the clamping rod 142 is in the first position under the pushing action of the first elastic member. The clamping seat 141 may be provided with a limiting structure so that the clamping rod 142 is stably in the first position under the pushing action of the first elastic member. When the middle door frame 114 and the first door frame are assembled, the clamping rod 142 can move to the second position under the action of an external force, so that the first elastic member is in a compressed state. After the middle door frame 114 moves in place, after the external force is removed or the external force gradually decreases, the clamping rod 142 can gradually extend into the clamping hole under the pushing action of the first elastic member, so that the clamping rod 142 and the clamping hole complete the clamping fit.

[0133] When the middle door frame 114 is detached from the first door frame, the clamping rod 142 can move from the first position to the second position against the thrust of the first elastic member under the action of an external force, so as to withdraw from the clamping hole.

[0134] In this embodiment, a first elastic member is arranged in the clamping member 14. The first elastic member can apply a thrust to the clamping rod 142, so that the clamping rod 142 can be stably and reliably clamped with the clamping hole, so that the clamping member 14 can cooperate with the clamping hole to form a self-locking structure, thereby making the overall structural stability and reliability of the connection between the middle door frame 114 and the first door frame better, reducing the risk that the middle door frame 114 accidentally detaches from the first door frame during long-term use, thereby making the overall structural stability of the energy storage device 10 better and the waterproof performance more stable and reliable.

[0135] In another embodiment of the present utility model, the card holder 141 can also be provided with a plurality of limiting structures for cooperation. When the card rod 142 moves to the first position or the second position, the plurality of limiting structures can cooperate to limit and fix the card rod 142, so that the card rod 142 can be stably and reliably in the first position or the second position, thereby enabling the card rod 142 to be stably engaged and matched with the card hole, meeting the requirement of the snap connection and fixation between the middle door frame 114 and the first door frame.

[0136] In some examples of the present utility model, such as Figure 11 shown, snap connectors 14 can be provided at both ends of the middle door frame 114 in the second direction.

[0137] In this embodiment, snap connectors 14 are provided at both ends of the middle door frame 114 in the second direction. When the middle door frame 114 is assembled with the first door frame, both ends of the middle door frame 114 are respectively snap-connected and fixed with the card holes on the first door frame through the snap connectors 14, so that the middle door frame 114 is integrally snap-connected to the first door frame.

[0138] In this embodiment, snap connectors 14 are provided at both ends of the middle door frame 114 to be snap-connected to the first door frame. The structure is simple, and both ends of the middle door frame 114 are snap-connected and fixed, so that the middle door frame 114 can be stably and reliably snap-connected and fixed on the first door frame, making the overall structure of the middle door frame 114 and the first door frame more stable and facilitating the sealing cooperation between the first door panel 12 and the middle door frame 114.

[0139] In an example of the present utility model, referring to Figure 11 and Figure 12 shown, a plurality of snap connectors 14 can be provided at any one end of the middle door frame 114 in the second direction. The plurality of snap connectors 14 are arranged along the third direction (such as Figure 11 the y direction shown), and the third direction intersects with the second direction and the first direction pairwise.

[0140] In this embodiment, at any one end in the second direction, the middle door frame 114 is provided with a plurality of snap connectors 14. For example, at one end of the middle door frame 114 in the second direction, there can be two, three, four, etc. snap connectors 14. The plurality of snap connectors 14 are arranged along the third direction. At the other end of the middle door frame 114 in the second direction, there can be two, three, four, etc. snap connectors 14. The plurality of snap connectors 14 are arranged along the third direction. A plurality of card holes can be correspondingly provided on the first door frame, and the number of snap connectors 14 at both ends of the middle door frame 114 can be the same or different.

[0141] In this embodiment, the third direction intersects with the second direction and the first direction in pairs, which is intended to indicate that the third direction is not parallel to the second direction and the first direction. For example, the third direction and the second direction may be at an acute angle, an obtuse angle, or a right angle, the third direction and the first direction may be at an acute angle, an obtuse angle, or a right angle, and the second direction and the first direction may be at an acute angle, an obtuse angle, or a right angle.

[0142] In the present embodiment, a plurality of clips 14 are arranged at any end of the middle door frame 114. The plurality of clips 14 can cooperate to stably and reliably fix one end of the middle door frame 114 to the first door frame, thereby reducing the probability of deflection and dislocation of the middle door frame 114, so that the middle door frame 114 can cooperate with the first door frame on one side in the first direction to form a surface that matches well with the first door panel 12, so that the first door panel 12 can cooperate with the middle door frame 114 to stably and reliably close the entrance and exit 1101.

[0143] In some embodiments of the present invention, the locking structure 13 may be a latch structure.

[0144] In this embodiment, the locking structure 13 is set as a latch structure, for example, the locking structure 13 can be a simple latch plus a latch seat and a latch hole. When the locking structure 13 switches between the locked state and the unlocked state, the locking structure 13 requires an external force to directly act on the latch, so that the latch is inserted into the latch hole to lock or withdrawn from the latch hole to unlock the first door panel 12. The locking structure 13 can be set in the energy storage cabin for easy operation.

[0145] In this embodiment, the locking structure 13 is set as a latch structure, which has a simple structure, is easy to operate, can lock the first door panel 12 and the first door frame reliably and stably, is easy to maintain, and has low cost.

[0146] In one embodiment of the present invention, reference Figure 8 and Figure 9 As shown, the locking structure 13 may include: a lock body 131, a locking rod 132 and a second elastic member, the lock body 131 is fixed to the first door panel 12; the locking rod 132 is arranged on the lock body 131 and extends along the second direction, in the second direction, the locking rod 132 can move between a third position and a fourth position relative to the lock body 131, in the third position, a part of the locking rod 132 abuts against a side of the first door frame in the first direction away from the first door panel 12, in the fourth position, the locking rod 132 is detached from the first door frame; the second elastic member is connected between the locking rod 132 and the lock body 131, and the second elastic member is used to push the locking rod 132 to move from the fourth position to the third position.

[0147] In this embodiment, the locking structure 13 includes a lock body 131, a lock rod 132 and a second elastic member. The lock body 131 is fixed on the first door panel 12. Specifically, the first door panel 12 in this embodiment opens toward the outside of the energy storage device 10. The lock body 131 can be fixed on the side of the first door panel 12 facing the energy storage compartment. The lock body 131 can be welded and fixed to the first door panel 12. The lock rod 132 is arranged on the lock body 131 and extends along the second direction. The lock rod 132 can move between a third position and a fourth position relative to the lock body 131. A limiting structure can be provided on the lock body 131 so that the lock rod 132 can be stably maintained at the third position and the fourth position.

[0148] When the first door panel 12 rotates to close the entrance and exit 1101, the locking rod 132 can move from the fourth position to the third position along the second direction, so that a part of the locking rod 132 abuts against a side of the first door frame that is away from the first door panel 12, so that the locking rod 132 cooperates with the lock seat to lock the first door panel 12 and the first door frame in the first direction. When the first door panel 12 needs to be opened, the locking rod 132 moves from the third position to the fourth position along the second direction, so that the locking rod 132 is disengaged from the first door frame, and the locking structure 13 as a whole follows the first door panel 12 to rotate to open the entrance and exit 1101.

[0149] In this embodiment, the second elastic member is connected between the lock rod 132 and the lock body 131. The second elastic member is used to push the lock rod 132 to move from the fourth position to the third position. The second elastic member can be an elastic member, such as a spring, rubber, etc. When the lock rod 132 cooperates with the first door frame to lock the first door panel 12, the first elastic member can be in a compressed state. When the locking structure 13 unlocks the first door panel 12, the lock rod 132 overcomes the thrust of the second elastic member under the action of an external force and moves to the fourth position. The lock rod 132 can be stably maintained in the fourth position under the action of the limiting structure of the lock body 131. At this time, the first door panel 12 can be freely opened or closed to facilitate the entry and exit of equipment or personnel. Exemplarily, the locking structure 13 can be a spring latch.

[0150] In this embodiment, a lock rod 132, a lock body 131 and a second elastic member cooperate to lock or unlock the first door panel 12 and the first door frame. The structure is simple, the cost is low, and the operation is convenient and easy. The first door panel 12 can be locked stably and reliably, which well meets the use requirements.

[0151] In some embodiments of the present invention, Figure 8 As shown, locking structures 13 may be provided at both ends of the first door panel 12 in the second direction.

[0152] The first door panel 12 is provided with locking structures 13 at both ends in the second direction. The number of locking structures 13 arranged at one end of the first door panel 12 can be one or more. The number of locking structures 13 arranged at both ends of the first door panel 12 can be the same or different. The locking structures 13 located at both ends of the first door panel 12 in the second direction can be arranged facing each other or staggered in the second direction.

[0153] In this embodiment, locking structures 13 are provided at both ends of the first door panel 12 in the second direction, so that both ends of the first door panel 12 in the second direction can be tightly locked and fixed to the first door frame under the locking action of the locking structures 13, thereby enabling the first door panel 12 to stably and reliably close the inlet / outlet 1101. Moreover, the end of the first door panel 12 that cooperates with the middle door frame 114 can cooperate with the middle door frame 114 more stably, so that a more stable and reliable sealing and matching structure can be formed between the first door panel 12 and the inlet / outlet 1101, enabling the energy storage device 10 to have better waterproof performance.

[0154] In some embodiments of the present utility model, as Figure 11 shown, the number of middle door frames 114 can be one and extend in the second direction to divide the first doorway into two inlets / outlets 1101 arranged side by side in the third direction. The second direction is the up-down direction (such as Figure 11 the z direction shown).

[0155] In this embodiment, the number of middle door frames 114 is set to one, and the first doorway is divided into two inlets / outlets 1101. The two inlets / outlets 1101 are arranged side by side in the third direction. Two corresponding first door panels 12 are provided. The two first door panels 12 are arranged in one-to-one correspondence with the two inlets / outlets 1101. The two first door panels 12 cooperate to form a double-door structure to close the first doorway. The two opposite sides of the first door panel 12 in the third direction can be rotatably connected to the box body 11 by means of hinges. The first door panel 12 can rotate around an axis extending in the second direction, and the second direction is the up-down direction.

[0156] The middle door frame 114 is arranged between the two first door panels 12. The two first door panels 12 can overlap and cooperate with the middle door frame 114, so that the two first door panels 12 can respectively close the two inlets / outlets 1101, thereby closing the first doorway.

[0157] In this embodiment, the number of middle door frames 114 is set to one, and the number is small. When the energy storage device 10 is assembled or maintained, the middle door frame 114 can be quickly and conveniently removed completely, so that the assembly or maintenance operation can be more efficient and convenient. In this embodiment, setting the first direction as the up-down direction can make it more convenient to open and close the first door panel 12.

[0158] In an embodiment of the present utility model, referring to Figure 5and Figure 8 As shown, one side of the first door panel 12 facing away from the middle door frame 114 in the third direction can be rotatably connected to the first door frame, and the locking structure 13 can be arranged on one side of the first door panel 12 close to the middle door frame 114 in the third direction.

[0159] In this embodiment, one side of the first door panel 12 facing away from the middle door frame 114 in the third direction is rotatably connected to the first door frame, then one side of the first door panel 12 facing the middle door frame 114 can be formed as the free end of the first door panel 12. When the first door panel 12 is opened or closed, the free end can be easily rotated around the side where the first door panel 12 is connected to the first door frame under the action of an external force. The locking structure 13 can be arranged on one side of the first door panel 12 close to the middle door frame 114 in the third direction, that is, the locking structure 13 is arranged at the free end of the first door panel 12. When the first door panel 12 is closed, the locking structure 13 cooperates with the first door frame to lock the free end of the first door panel 12 to the middle door frame 114 and the first door frame.

[0160] In this embodiment, arranging the locking structure 13 on the side of the first door panel 12 close to the middle door frame 114 can enable the locking structure 13 to cooperate with the connection structure between the other side of the first door panel 12 and the first door frame in the third direction, and lock and fix the first door panel 12 stably and reliably on the first door frame and the middle door frame 114 in the third direction, so that the first door panel 12 can stably and reliably close the inlet / outlet 1101, and the energy storage device 10 can have good waterproof performance.

[0161] In some embodiments of the present utility model, referring to Figure 11 As shown, the energy storage device 10 may further include a plurality of seals 15. The plurality of seals 15 correspond to the plurality of inlets / outlets 1101 one by one. The seal 15 extends along the corresponding inlet / outlet 1101 in a ring shape. When the first door panel 12 closes the inlet / outlet 1101, the seal 15 is sealingly connected between the first door panel 12 and the box body 11.

[0162] In this embodiment, the energy storage device 10 is provided with a plurality of seals 15. For example, the number of seals 15 can be two, three, four, five, etc. The number of seals 15 is the same as the number of inlets / outlets 1101. The seal 15 extends along the corresponding inlet / outlet 1101 in a ring shape. The seal 15 can be a component with a sealing effect, such as a sealing ring, a gasket, a sealing foam, etc. The seal 15 can be manufactured by using materials with anti-ozone, heat-resistant, weather-resistant and other anti-aging properties. For example, the seal 15 can be an ethylene propylene diene monomer rubber part, a silicone rubber part, a fluororubber part, etc.

[0163] When the first door panel 12 closes the inlet / outlet 1101, the seal 15 is sealingly connected between the first door panel 12 and the box body 11. Specifically, the seal 15 can be sealingly connected between the first door frame and the first door panel 12 and between the middle door frame 114 and the first door panel 12.

[0164] In this embodiment, a seal 15 is provided between the first door panel 12 and the box body 11, and the seal 15 is arranged in one-to-one correspondence with a plurality of inlets / outlets 1101 and extends in a ring shape along the inlets / outlets 1101, so that after the first door panel 12 closes the inlets / outlets 1101, it can form a stable and reliable seal with the first door frame and the middle door frame 114 of the box body 11, enabling the first door panel 12 to completely enclose the inlets / outlets 1101 along the circumferential direction of the inlets / outlets 1101. Thus, a plurality of first door panels 12 cooperate with the middle door frame 114 to stably and reliably close the first doorway, providing a stable and reliable sealing effect for the energy storage compartment and enabling the energy storage device 10 to have good waterproof performance.

[0165] In an embodiment of the present utility model, referring to Figure 13 and Figure 14 as shown, the seal 15 may include: a fixing portion 151 and a deforming portion 152. The fixing portion 151 is provided with a fixing groove, and both the first door frame and the middle door frame 114 are formed with fixing flanges 101. The fixing flanges 101 partially extend into the fixing groove to be fixedly connected to the fixing portion 151. The deforming portion 152 is connected to the fixing portion 151 and is located between the fixing flange 101 and the first door panel 12. The deforming portion 152 has a deforming cavity and is adapted to abut against the first door panel 12.

[0166] In this embodiment, the seal 15 includes a fixing portion 151 and a deforming portion 152. The fixing portion 151 is provided with a fixing groove, and the fixing groove cooperates with the fixing flanges 101 of the first door frame and the middle door frame 114 for fixation. The fixing groove can extend in a ring shape along the circumferential direction of the inlets / outlets 1101. The fixing flanges 101 of the first door frame and the fixing flanges 101 on the middle door frame 114 can cooperate to form a continuous ring extending along the circumferential direction of the inlets / outlets 1101. When the seal 15 is assembled with the first door frame and the middle door frame 114, the middle door frame 114 is fixed to the first door frame through a clamping member 14. The fixing portion 151 of the seal 15 is fixed to the middle door frame 114 and the first door frame through the cooperation of the fixing groove and the fixing flange 101, and the deforming portion 152 is arranged on the sides of the first door frame and the middle door frame 114 facing the first door panel 12.

[0167] When the first door panel 12 closes the inlet / outlet 1101, the deformation part 152 elastically deforms, and the deformation cavity changes and shrinks along with the deformation of the deformation part 152. When the first door panel 12 is closed in place, the deformation part 152 is in close contact with the first door panel 12 under the action of the elastic force, so as to seal between the first door panel 12, the first door frame and the middle door frame 114. When the first door panel 12 is opened and the middle door frame 114 is removed, the seal 15 can be removed from the first door frame first and then the middle door frame 114 can be removed.

[0168] In this embodiment, the seal 15 is provided with a fixing part 151 and a deformation part 152, and the structure is simple. The fixing part 151 is provided with a fixing groove, and the first door frame and the middle door frame 114 are provided with fixing flanges 101, and the structure is simple, so that the seal 15 can be conveniently and reliably fixed to the first door frame and the middle door frame 114, thereby making the assembly of the seal 15 and the box body 11 more convenient. The deformation part 152 is provided with a deformation cavity, which can reserve a good deformation space for the deformation of the deformation part 152 between the first door panel 12 and the first door frame and between the first door panel 12 and the middle door frame 114, so that the deformation part 152 can stably deform to reliably abut and seal with the first door panel 12, making the sealing effect of the seal 15 better, and further making the waterproof performance of the energy storage component better.

[0169] In an embodiment of the present invention, in the first direction, the ratio of the thickness of the seal 15 after elastic deformation to the initial thickness of the seal 15 may be greater than or equal to 0.25 and less than or equal to 0.35.

[0170] In this embodiment, the ratio of the thickness of the seal 15 after elastic deformation to the initial thickness of the seal 15 is set to be greater than or equal to 0.25 and less than or equal to 0.35. For example, the ratio may be 0.25, 0.26, 0.28, 0.3, 0.33, 0.35, etc.

[0171] In this embodiment, the ratio of the thickness of the seal 15 after elastic deformation to the initial thickness of the seal 15 is set to be greater than or equal to 0.25, which can enable the seal 15 to have sufficient deformation amount, so that the seal 15 can play a stable and good sealing effect, thereby enabling the energy storage device 10 to have good sealing and waterproof performance at the first door panel 12.

[0172] In the present embodiment, the ratio of the thickness of the seal 15 after elastic deformation to the initial thickness of the seal 15 is set to be less than or equal to 0.35. This can enable the seal 15 to have a good sealing effect while reducing the probability of excessive deformation of the seal 15 leading to rapid attenuation of the sealing performance, reduced service life and structural damage. During the long-term use of the seal 15 and the multiple openings and closings of the first door panel 12, the seal 15 can always maintain good sealing performance, thereby enabling the seal 15 to have a longer service life and a more stable and reliable seal, thereby reducing maintenance costs to a certain extent.

[0173] In some embodiments of the present invention, the middle door frame 114 may be an aluminum member.

[0174] In this embodiment, the middle door frame 114 is configured as an aluminum part. Aluminum parts have the advantages of low density, high strength, corrosion resistance, and easy processing. The middle door frame 114 can be processed and produced by stamping, extrusion, etc. during manufacturing, and the manufacturing is relatively convenient and flexible.

[0175] In this embodiment, the middle door frame 114 is set to be an aluminum part, which can meet the need of lightweight, make the middle door frame 114 lighter, facilitate the disassembly and assembly and use of the middle door frame 114, and have good structural strength, thereby meeting the need for sealing with the first door panel 12 and the seal 15.

[0176] In some embodiments of the present invention, a first handle may be provided on a side of the first door panel 12 facing the first doorway.

[0177] In this embodiment, a first handle is provided on the side of the first door panel 12 facing the first door entrance, that is, a first handle is provided on the side of the first door panel 12 facing the energy storage compartment. When the first door panel 12 needs to be opened or closed, the first handle can provide a gripping position for assemblers or maintenance personnel, etc., so that external force is applied to the first door panel 12 through the first handle, thereby opening or closing the first door panel 12.

[0178] The arrangement position of the first handle can be reasonably set according to the use requirements, for example, the first handle can be set at a position close to the middle of the first door panel 12 in the second direction, or the first handle can be set at a position close to the middle door frame 114 in the third direction of the first door panel 12. The specific structure, form and material of the first handle can be reasonably set according to the requirements, and are not specifically limited here.

[0179] In this embodiment, a first handle is provided on the side of the first door panel 12 facing the first door opening, which can facilitate opening and closing of the first door panel 12 and make it more convenient to perform maintenance and debugging of the energy storage device 10.

[0180] In some embodiments of the present utility model, a second handle may be provided on the side of the middle doorframe 114 facing away from the first door panel 12.

[0181] In this embodiment, a second handle is provided on the side of the middle doorframe 114 facing away from the first door panel 12. When the middle doorframe 114 is disassembled and assembled, the second handle can provide a grasping position for assembly personnel or maintenance personnel, etc., so that the middle doorframe 114 can be moved to the first doorframe under the action of an external force for assembly or detached from the first doorframe.

[0182] The arrangement position of the second handle can be arranged as needed. For example, the second handle can be arranged at a position above the middle of the middle doorframe 114 in the second direction. The specific structure and material of the second handle can be reasonably set as needed, and no specific limitation is made here.

[0183] In this embodiment, a second handle is provided on the side of the middle doorframe 114 facing away from the first door panel 12, and the structure is simple, making it more convenient to disassemble, assemble, take and use the middle doorframe 114, so that the energy storage device 10 is more convenient during maintenance and debugging operations.

[0184] In some embodiments of the present utility model, as Figure 5 and Figure 11 shown, the box body 11 may include: a bottom plate 113, a first vertical beam 111 and a wind shield plate 112. The first vertical beam 111 extends vertically and its lower end is connected to the bottom plate 113. The number of the first vertical beams 111 is two, and the two first vertical beams 111 are arranged at intervals in the third direction; the wind shield plate 112 extends in the third direction and its two ends are respectively connected to the two first vertical beams 111. The wind shield plate 112, the bottom plate 113 and the two first vertical beams 111 together form a first doorframe.

[0185] In this embodiment, the box body 11 is provided with a bottom plate 113, a first vertical beam 111 and a wind shield plate 112. The bottom plate 113 can be arranged in the horizontal direction, and the bottom of the bottom plate 113 can be supported and fixed by arranging a plurality of channel steels. The lower end of the bottom plate 113 is connected to the first vertical beam 111. The first vertical beam 111 can be arranged on the circumferential edge of the bottom plate 113. The number of the first vertical beams 111 is two, and the two first vertical beams 111 extend in the second direction and are arranged at intervals in the third direction. The two ends of the wind shield plate 112 in the third direction are respectively connected to the two first vertical beams 111. The upper edge of the wind shield plate 112 can be arranged flush with the upper edge of the first vertical beam 111. The wind shield plate 112, the two first vertical beams 111 and the bottom plate 113 together form a first doorframe.

[0186] When the energy storage device 10 is assembled, two first door panels 12 can be respectively hinged to two first vertical beams 111. The locking structure 13 can cooperate with the wind hood plate 112 to lock or unlock the first door panel 12, and the locking structure 13 can cooperate with the sill structure provided on the bottom plate 113 to lock or unlock the first door panel 12. Exemplarily, blind hole structures can also be provided on the bottom plate 113 to cooperate with the locking structure 13.

[0187] In this embodiment, the box body 11 is provided with a bottom plate 113, first vertical beams 111 and a wind hood plate 112 which cooperate to form a first door frame. The structure is simple and can well meet the assembly requirements of the box body 11, making the overall structure of the first door frame have good stability and reliability, so that the first door panel 12 can be stably assembled and fixed to the first door frame.

[0188] In some embodiments of the present utility model, as Figure 3 and Figure 6 shown, on the other side of the box body 11 in the first direction, a second door opening communicating with the energy storage compartment can be provided. The energy storage device 10 can further include a second door panel 16, which is rotatably connected to the box body 11 and is used to open and close the second door opening. The energy storage device 10 can further include: a locking rod structure 17, which is provided on the outer side of the box body 11 and is configured to lock the second door panel 16 to the box body 11 when the second door panel 16 closes the second door opening.

[0189] In this embodiment, a second door opening is provided on the other side of the box body 11 in the first direction. The second door panel 16 can open or close the second door opening. The second door opening communicates with the energy storage compartment. The second door panel 16 and the second door opening are locked or unlocked through the locking rod structure 17, so that the second door panel 16 closes or opens the second door opening. The locking rod structure 17 is provided on the outer side of the box body 11.

[0190] When maintenance, debugging or other operations need to be performed on the energy storage device 10, the locking rod structure 17 is unlocked from the outer side of the box body 11, the second door panel 16 is opened, and maintenance personnel, debugging personnel, etc. enter the energy storage compartment from the second door opening. The locking structure 13 at the first door panel 12 is unlocked from the inside of the energy storage compartment, and the first door panel 12 is opened. At this time, equipment and personnel can enter and exit the energy storage compartment from the first door opening or the second door opening. When the two inlets and outlets 1101 at the first door opening cannot meet the entry and exit of equipment or personnel, the seal 15 can be removed first, and then the middle door frame 114 is detached from the first door frame, and the two inlets and outlets 1101 are combined to form a complete first door opening. The locking rod structure 17 in this embodiment can refer to the same structure as the locking rod structure 17 on the container, so that after the second door panel 16 closes the second door opening, the waterproof requirement can be stably and reliably met.

[0191] In this embodiment, a second door opening and a second door panel 16 are provided on the other side of the box body 11 in the first direction. The second door panel 16 is locked by a lock rod structure 17. The lock rod structure 17 is arranged on the outside of the box body 11. The structure is simple, which can well meet the needs of equipment personnel and others when entering the energy storage compartment and the waterproof requirements of the energy storage device 10. Moreover, it can cooperate with the first door panel 12 and the first door opening, so that personnel and equipment can enter and exit the energy storage device 10 from both sides in the second direction, making the energy storage device 10 more convenient and flexible during maintenance operations or commissioning operations, etc.

[0192] Reference will be made below to Figures 2 - 14 describe the energy storage system 100 according to the second aspect embodiment of the present invention. Figure 2 FIG. is a schematic diagram of the energy storage system 100 according to the embodiment of the present invention.

[0193] As Figures 2 - 14 shown, the energy storage system 100 according to the embodiment of the present invention includes: a power conversion device 30 and an energy storage device 10 according to the first aspect embodiment of the present invention. The power conversion device 30 is used to electrically connect the power generation device 20 and the energy storage device 10.

[0194] Other components and operations of the energy storage system 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0195] For the energy storage system 100 according to the embodiment of the present invention, by providing the energy storage device 10 of the above first aspect embodiment, the middle door frame 114 and the locking structure 13 are provided in the energy storage device 10. The middle door frame 114 is detachably connected to the first door frame. The locking structure 13 is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel 12, so that the energy storage device 10 can be assembled, maintained, and debugged flexibly and conveniently, and the first door panel 12 can stably and reliably close the first door opening, so that the energy storage device 10 can have better and more reliable waterproof performance, and the production cost of the energy storage device 10 can be well reduced.

[0196] Reference will be made below to Figures 2 - 14 describe the electrical device according to the third aspect embodiment of the present invention.

[0197] As Figures 2 - 14 shown, the electrical device according to the embodiment of the present invention includes the energy storage device 10 according to the first aspect embodiment of the present invention or the energy storage system 100 according to the second aspect embodiment of the present invention. The energy storage device 10 is used to store or provide electric energy.

[0198] Other components and operations of the electrical device according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0199] The electrical device according to an embodiment of the present invention, by providing the energy storage device 10 of the first aspect embodiment or the energy storage system 100 of the second aspect embodiment, the energy storage device 10 is provided with a middle doorframe 114 and a locking structure 13. The middle doorframe 114 is detachably connected to the first doorframe, and the locking structure 13 is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel 12, enabling the energy storage device 10 to be assembled, maintained, and debugged flexibly and conveniently. The first door panel 12 can stably and reliably close the first doorway, so that the energy storage device 10 can have better and more reliable waterproof performance, and the production cost of the energy storage device 10 can be well reduced.

[0200] Next, refer to Figures 1 - 14 to describe the charging network 1000 according to the fourth aspect embodiment of the present invention. Figure 1 FIG. is a schematic diagram of the charging network 1000 according to an embodiment of the present invention.

[0201] As Figures 1 - 14 shown, the charging network 1000 according to an embodiment of the present invention includes: a charging pile 200; the energy storage device 10 according to the first aspect embodiment of the present invention or the energy storage system 100 according to the second aspect embodiment of the present invention, and the energy storage device 10 is used to provide electric energy for the charging pile 200.

[0202] Other components and operations of the charging network 1000 according to an embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0203] The charging network 1000 according to an embodiment of the present invention, by providing the energy storage device 10 of the first aspect embodiment or the energy storage system 100 of the second aspect embodiment, the energy storage device 10 is provided with a middle doorframe 114 and a locking structure 13. The middle doorframe 114 is detachably connected to the first doorframe, and the locking structure 13 is configured to be triggered only inside the energy storage compartment to lock or unlock the first door panel 12, enabling the energy storage device 10 to be assembled, maintained, and debugged flexibly and conveniently. The first door panel 12 can stably and reliably close the first doorway, so that the energy storage device 10 can have better and more reliable waterproof performance, and the production cost of the energy storage device 10 can be well reduced.

[0204] Next, reference will be made to Figures 1 - 14 to describe the charging network 1000 according to a specific embodiment of the present invention.

[0205] As Figure 1 and Figure 2As shown, the charging network 1000 includes a charging pile 200 and an energy storage system 100. The energy storage system 100 includes a power conversion device 30, a power generation device 20, and an energy storage device 10. The power conversion device 30 is used to electrically connect the power generation device 20 and the energy storage device 10. The power generation device 20 can specifically be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. The specific type of the power generation device is not limited in the present utility model. The energy storage device 10 is used to provide electric energy for the charging pile 200. The charging pile 200 can have one or more connectors 300. The connectors 300 are used to connect with an electrical device, such as a vehicle, so as to supplement energy to the electrical device.

[0206] As Figures 3 - 14 As shown, the energy storage device 10 is an energy storage container. The energy storage device 10 includes a box body 11, a first door panel 12, a locking structure 13, a clamping member 14, a sealing member 15, a second door panel 16, and a lock rod structure 17. The box body 11 includes a first door frame and a middle door frame 114. The first door frame is arranged on one side of the box body 11 in the first direction. The first door frame is formed by the cooperation of two first vertical beams 111, a bottom plate 113, and a wind shield plate 112. The first door frame forms a first door opening. The box body 11 has an energy storage compartment, and the energy storage compartment communicates with the first door opening. On the other side of the box body 11 in the first direction, there is a second door opening. The second door opening can be arranged directly opposite to the first door opening in the first direction, or the second door opening can also be formed by a door frame formed by other vertical beam structures and plate structures of the box body 11 and the cooperation of the bottom plate 113, which is not specifically described here, as long as the assembly requirements are met. The middle door frame 114 is an aluminum component, such as a thin and light aluminum plate. The middle door frame 114 can be subjected to spraying treatment. The first door panel 12, the second door panel 16, the first vertical beam 111, and the bottom plate 113, etc. can be steel components, such as cold-rolled steel plates.

[0207] The middle door frame 114 extends in the second direction and is respectively connected to the first door frame at both ends by clamping connection with the clamping members 14. Two clamping members 14 are arranged at each end of the middle door frame 114. The two clamping members 14 are located on both sides of the middle door frame 114 in the third direction. The clamping members 14 are fixedly assembled with the middle door frame 114. Corresponding clamping holes are formed on the first door frame. The middle door frame 114 divides the first door opening into two inlets and outlets 1101.

[0208] Both the first door frame and the middle door frame 114 are formed with fixed flanges 101. The seal 15 is an O-ring. There are two seals 15, which are respectively fixed in cooperation with the fixed flanges 101 along the circumference of the inlet and outlet 1101. The number of the first door panels 12 is two, and they are respectively matched with the two inlets and outlets 1101. One side of the first door panel 12 facing away from the middle door frame 114 in the third direction is hinged to the first door frame. The other side of the first door panel 12 can be matched with the middle door frame 114. The locking structures 13 are arranged on the first door panel 12 and the number is two. One of the locking structures 13 is arranged on the first door panel 12 on the side close to the middle door frame 114 in the third direction, and is arranged on the first door panel 12 on the side close to the wind shield plate 112 in the second direction to cooperate with the wind shield plate 112. The other is arranged opposite to it in the second direction and cooperates with the bottom plate 113. The locking structure 13 is a spring bolt.

[0209] A first handle is provided on the first door panel 12, and a second handle is provided on the middle door frame 114. Both the first handle and the second handle are located in the energy storage compartment after the first door panel 12 closes the first door opening.

[0210] After the energy storage device 10 is assembled, the two first door panels 12 cooperate with the middle door frame 114 and the seals 15 to close the first door opening. The two locking structures 13 lock the first door panel 12 at both ends of the first door panel 12 in the second direction. The seal 15 can be compressed by 3 mm. The middle door frame 114 and the first door frame are fixedly connected by two clamping members 14. The second door panel 16 stably and reliably closes the second door opening through the lock rod structure 17. The first door opening and the second door opening can face the transformer room of the energy storage compartment.

[0211] When maintenance, debugging or other operations are carried out on the energy storage device 10, the lock rod structure 17 is unlocked to open the second door opening, so that maintenance personnel, equipment, etc. can enter and exit the energy storage compartment from the second door opening. When the energy storage device 10 needs to carry out operation and maintenance on the other side, the locking structure 13 is unlocked from the inside of the energy storage compartment to open the first door panel 12, so that maintenance personnel, equipment, etc. can enter and exit the energy storage compartment flexibly and conveniently from the two inlets and outlets 1101 of the first door opening and the second door opening. When the inlets and outlets 1101 cannot meet the entry and exit requirements, the middle door frame 114 can be quickly detached through the clamping members 14 to form a complete first door opening for the entry and exit of maintenance personnel, equipment, etc.

[0212] In this embodiment, since the first door panel 12 is opened from inside the energy storage compartment and cannot be opened from the outside of the box body 11, the arrangement of the screen door structure can be omitted, resulting in a relatively low cost of the energy storage device 10. The setting of the middle door frame 114 makes it convenient to arrange the seal 15. The middle door frame 114 provides a stable arrangement position and a mating position for the seal 15 and the first door panel 12, enabling the first door panel 12 to cooperate with the middle door frame 114 to clamp the seal 15 at the middle door frame 114. As a result, the first door panel 12 can stably and reliably close the inlet / outlet 1101 at the middle door frame 114, and further enables the two first door panels 12 to stably and reliably close the first doorway, endowing the energy storage device 10 with excellent waterproof sealing performance at the first doorway.

[0213] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, Comprising: A box body (11), the box body (11) having an energy storage compartment, the box body (11) including a first door frame and a middle door frame (114), the first door frame being provided on one side of the box body (11) in a first direction, the first door frame forming a first door opening communicating with the energy storage compartment, the middle door frame (114) extending in a second direction and having both ends detachably connected to the first door frame, the middle door frame (114) separating the first door opening into a plurality of inlets and outlets (1101); A first door panel (12), the number of the first door panels (12) being a plurality and corresponding to the plurality of inlets and outlets (1101) one by one, the first door panel (12) being connected to the first door frame for opening and closing the corresponding inlet and outlet (1101); A locking structure (13), the locking structure (13) having a locked state and an unlocked state, in the locked state, the locking structure (13) being adapted to lock the first door panel (12) to the first door frame, in the unlocked state, the locking structure (13) unlocking the first door panel (12) so that the first door panel (12) can open the corresponding inlet and outlet (1101), wherein, the locking structure (13) is configured to be triggered only inside the energy storage compartment to realize switching between the locked state and the unlocked state.

2. The energy storage device according to claim 1, wherein, The middle door frame (114) is snap-connected to the first door frame, and / or, the middle door frame (114) is connected to the first door frame by fasteners.

3. The energy storage device according to claim 2, characterized in that, One of the middle door frame (114) and the first door frame is provided with a snap member (14) and the other forms a snap portion, and the middle door frame (114) and the first door frame are snap-connected by the cooperation of the snap member (14) and the snap portion.

4. The energy storage device according to claim 3, characterized in that, The snap member (14) includes: a snap base (141) and a snap rod (142), the snap base (141) being fixed to the middle door frame (114), the snap rod (142) being provided on the snap base (141), in the second direction, the snap rod (142) being movable between a first position and a second position, The snap portion is provided on the first door frame and formed as a snap hole, in the first position, a part of the snap rod (142) extends into the snap hole, in the second position, the snap rod (142) disengages from the snap hole.

5. The energy storage device according to claim 4, wherein The snap member (14) further includes a first elastic member, the first elastic member being connected between the snap base (141) and the snap rod (142), the first elastic member being used to push the snap rod (142) to move from the second position to the first position.

6. The energy storage device according to claim 3, characterized in that, The middle door frame (114) is provided with the snap member (14) at both ends in the second direction.

7. The energy storage device according to claim 6, wherein The middle door frame (114) is provided with a plurality of the snap members (14) at any one end in the second direction, the plurality of snap members (14) being arranged in a third direction, the third direction intersecting with the second direction and the first direction pairwise.

8. The energy storage device according to any one of claims 1-7, characterized in that, The locking structure (13) is a bolt structure.

9. The energy storage device according to claim 8, wherein, The locking structure (13) includes: A lock body (131), wherein the lock body (131) is fixed to the first door panel (12); a lock rod (132), the lock rod (132) being arranged on the lock body (131) and extending along a second direction, wherein in the second direction, the lock rod (132) is movable relative to the lock body (131) between a third position and a fourth position, wherein in the third position, a portion of the lock rod (132) abuts against a side of the first door frame in the first direction away from the first door panel (12), and in the fourth position, the lock rod (132) is separated from the first door frame; A second elastic member, wherein the second elastic member is connected between the locking rod (132) and the lock body (131), and the second elastic member is used to push the locking rod (132) to move from the fourth position to the third position.

10. The energy storage device according to any one of claims 1-7, characterized in that, The locking structure (13) is provided at both ends of the first door panel (12) in the second direction.

11. The energy storage device according to any one of claims 1-7, characterized in that, The number of the middle door frame (114) is one and it extends along the second direction to separate the first doorway into two entrances and exits (1101) arranged side by side in a third direction, and the second direction is the up-down direction.

12. The energy storage device according to claim 11, characterized in that, The first door panel (12) is rotatably connected to the first door frame on a side facing away from the middle door frame (114) in the third direction, and the locking structure (13) is arranged on a side of the first door panel (12) close to the middle door frame (114) in the third direction.

13. The energy storage device according to any one of claims 1-7, characterized in that, It also includes a plurality of sealing members (15), the plurality of sealing members (15) corresponding one to one with the plurality of inlets and outlets (1101), the sealing members (15) extending in a ring shape along the corresponding inlets and outlets (1101), and when the first door panel (12) closes the inlets and outlets (1101), the sealing members (15) are sealed and connected between the first door panel (12) and the box body (11).

14. The energy storage device according to claim 13, wherein The sealing member (15) comprises: A fixing portion (151), the fixing portion (151) being provided with a fixing groove, the first door frame and the middle door frame (114) both being formed with fixing flanges (101), the fixing flanges (101) partially extending into the fixing groove to be fixedly connected with the fixing portion (151); A deformation portion (152), the deformation portion (152) is connected to the fixing portion (151) and is located between the fixing flange (101) and the first door panel (12), the deformation portion (152) having a deformation cavity and being suitable for abutting against the first door panel (12).

15. The energy storage device according to claim 13, characterized in that, In the first direction, the ratio of the thickness of the sealing member (15) after elastic deformation to the initial thickness of the sealing member (15) is greater than or equal to 0.25 and less than or equal to 0.

35.

16. The energy storage device according to any one of claims 1-7, characterized in that, The middle door frame (114) is an aluminum part.

17. The energy storage device according to any one of claims 1-7, characterized in that, A first handle is provided on a side of the first door panel (12) facing the first door opening.

18. The energy storage device according to any one of claims 1-7, characterized in that, A second handle is provided on the side of the middle door frame (114) facing away from the first door panel (12).

19. The energy storage device according to any one of claims 1-7, characterized in that, The housing (11) comprises: A bottom plate (113) and a first vertical beam (111), the first vertical beam (111) extends vertically and its lower end is connected to the bottom plate (113), the number of the first vertical beams (111) is two, and the two first vertical beams (111) are arranged at intervals in the third direction; A wind shield plate (112), the wind shield plate (112) extends in the third direction and its two ends are respectively connected to the two first vertical beams (111), and the wind shield plate (112), the bottom plate (113) and the two first vertical beams (111) together form the first door frame.

20. The energy storage device according to any one of claims 1-7, characterized in that, On the other side of the box body (11) in the first direction, there is a second door opening communicating with the energy storage compartment, and the energy storage device further includes a second door panel (16), the second door panel (16) is rotatably connected to the box body (11) and is used to open and close the second door opening. The energy storage device further includes: a lock rod structure (17), the lock rod structure (17) is arranged on the outer side of the box body (11) and is configured to lock the second door panel (16) to the box body (11) when the second door panel (16) closes the second door opening.

21. A energy storage system, characterized in that, Comprising: A power conversion device (30) and the energy storage device according to any one of claims 1-20, the power conversion device (30) is used to electrically connect the power generation device (20) and the energy storage device.

22. An electrical device, characterized in that, Comprising the energy storage device according to any one of claims 1-20 or the energy storage system according to claim 21, the energy storage device is used to store or provide electric energy.

23. A charging network, characterized in that, Comprising: A charging pile (200); The energy storage device according to any one of claims 1-20 or the energy storage system according to claim 21, the energy storage device is used to provide electric energy for the charging pile (200).

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