Energy storage cabinet

Abstract

Disclosed in the present disclosure is an energy storage cabinet, comprising: a cabinet body, which accommodates a battery and is provided with an opening; a cabinet door, which is connected to the cabinet body, can open or close the opening, and has an inwardly recessed groove formed in the outer side surface of the cabinet door; and a door handle assembly, wherein the door handle assembly comprises a handle that is movably mounted in the groove of the cabinet door, so that the handle can be switched between a first state in which the handle is recessed in the groove and a second state in which the handle is partially located outside the groove, the groove being provided with a mounting hole; the door handle assembly further comprises a connecting rod connected to the handle, a limiting member fixedly connected to the connecting rod, and a spring member sleeved on the connecting rod, the connecting rod passing through the mounting hole, the limiting member being located on the inner side of the cabinet door, and the spring member being located between the handle and the cabinet door at the groove and being in a compressed state; and in the first state, the limiting member defines the position of the connecting rod relative to the mounting hole, and the handle is recessed into the groove in a state of resisting the elastic pressure of the spring member.

Description

Energy storage cabinet

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 202421608284.8, filed on July 9, 2024, entitled “Energy Storage Cabinet”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of energy storage technology, and in particular to energy storage cabinets. Background Technology

[0004] An energy storage cabinet is an integrated device that combines energy storage and power supply to loads. It is characterized by high efficiency, flexibility, convenience, and reliability, and is widely used in industrial, commercial, and residential sectors.

[0005] To facilitate opening and closing the cabinet door, energy storage cabinets are usually equipped with door handles. However, the door handles protrude and are exposed outside the cabinet door, which can easily lead to the risk of bumping and hitting the door handle, and the appearance is not simple enough. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this disclosure provides an energy storage cabinet in which the door handle can be hidden in the cabinet door.

[0007] This disclosure is achieved through the following technical solution.

[0008] The first aspect of this disclosure provides an energy storage cabinet, comprising: a cabinet body for housing batteries, the cabinet body having an opening; a cabinet door connected to the cabinet body, capable of opening and closing the opening, the outer side of the cabinet door having a recessed groove facing inward; and a door handle assembly including a handle movably mounted in the groove of the cabinet door, thereby allowing the handle to switch between a first state and a second state. In the first state, the handle is recessed in the groove, and in the second state, a portion of the handle is located outside the groove. The groove has a mounting hole. The door handle assembly further includes a connecting rod connected to the handle, a limiting member fastened to the connecting rod, and a spring member sleeved on the connecting rod. The connecting rod passes through the mounting hole, and the limiting member is located inside the cabinet door. The spring member is located between the handle and the cabinet door at the groove and is in a compressed state. In the first state, the limiting member limits the position of the connecting rod relative to the mounting hole, and the handle is recessed in the groove in a state resisting the elastic pressure of the spring member.

[0009] The handle can switch between a first state where it is recessed into a groove and a second state where it is outside the groove. When the cabinet door needs to be opened, the handle is exposed outside the groove for easy gripping and opening. When the cabinet door does not need to be opened, the handle is hidden in the groove, reducing the risk of bumps, especially during transportation. It also reduces space occupation, allowing for a more compact arrangement of multiple energy storage cabinets, thus enabling the transport of more energy storage cabinets within a limited space. In addition, it makes the overall energy storage cabinet more streamlined. Furthermore, in the first state, the limiting member restricts the position of the connecting rod relative to the mounting hole, reducing the wobbling of the connecting rod and the handle. The spring member is located between the handle and the cabinet door at the groove and is in a compressed state. The compressed spring member applies a spring force away from the groove to the handle, ensuring that the limiting member is stably pressed against the cabinet door, further improving the reliability of the limiting.

[0010] In some embodiments, the groove is provided with a keyhole. In a first state, the handle blocks the keyhole, and in a second state, the handle can rotate relative to the groove to avoid the keyhole.

[0011] In the first state, when the handle is recessed into the groove, it can not only be hidden in the groove, but also block the keyhole, thus protecting the keyhole and reducing the risk of foreign objects entering and clogging the keyhole. In the second state, when the handle is outside the groove, rotating the handle avoids the keyhole, so that the key can be smoothly inserted into the keyhole.

[0012] In some embodiments, the limiting member has a flange portion and a boss portion connected to each other, and also has a through hole penetrating the flange portion and the boss portion. The connecting rod is inserted into the through hole. In a first state, the flange portion abuts against the inner side of the cabinet door, and the boss portion is inserted into the mounting hole, thereby defining the position of the connecting rod relative to the mounting hole.

[0013] The connection between the connecting rod, the boss, and the mounting hole on the cabinet door ensures that the connecting rod does not wobble in the mounting hole. The connection between the flange and the inner side of the cabinet door ensures that the position of the handle is limited along the axis of the connecting rod, preventing the connecting rod from coming out of the mounting hole and onto the outside of the cabinet door.

[0014] In some embodiments, a limiting step is provided on the outer peripheral surface of the connecting rod, the limiting step is arranged around the circumference of the connecting rod, the connecting rod is provided with a fastener, and the limiting member is fastened between the fastener and the limiting step.

[0015] Since the limiting component is fastened between the fastener and the limiting step, the risk of the limiting component shaking is reduced when the handle is recessed into the groove, and the installation and removal of the limiting component and the connecting rod are facilitated, thereby facilitating the installation and removal of the handle assembly relative to the cabinet door.

[0016] In some embodiments, in the second state, the boss is dislodged from the mounting hole under the force from the outside of the cabinet door, and there is a gap between the connecting rod and the mounting hole. In the second state, under the force from the outside of the cabinet door, one end of the handle along the length direction is located in the groove, and the other end of the handle along the length direction is located outside the groove, with the length direction perpendicular to the groove depth direction.

[0017] When it is necessary to open or close the cabinet door, first press the handle to disengage the protrusion from the mounting hole toward the inside of the cabinet door. This creates a gap between the connecting rod and the mounting hole, allowing the connecting rod to tilt within the mounting hole. Then, press one end of the handle to expose the other end of the handle outside the groove, making it easier to grip the handle to open or close the cabinet door.

[0018] In some embodiments, along the length of the handle, the handle includes a first handle end and a second handle end, the distance of the first handle end relative to the connecting rod being different from the distance of the second handle end relative to the connecting rod.

[0019] When you need to open or close the cabinet door, you can press the end of the first handle that is closer to the connecting rod than the second handle. This allows for a larger exposure of the handle with a shorter pressing stroke, making it easier to grip the handle.

[0020] In some embodiments, the connecting rod is disposed near the first handle end, along the length of the groove, and the keyhole is disposed closer to the second handle end than the mounting hole.

[0021] Because it allows the keyhole to be easily exposed and provides enough space for the key to rotate.

[0022] In some embodiments, the handle is provided with markings to indicate the pressing position.

[0023] This makes it easy and convenient for users to operate the system accurately.

[0024] In some embodiments, the groove is formed by bending the cabinet door panel.

[0025] Therefore, even if the cabinet door panel is a relatively thin structural component, it is possible to install a concealed door handle.

[0026] The embodiments disclosed herein have at least the following beneficial effects: Through this disclosure, the door handle of the energy storage cabinet can be hidden in the cabinet door, reducing the risk of bumps and knocks. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 is a schematic diagram of the structure of an energy storage cabinet provided in some embodiments of this disclosure;

[0029] Figure 2 is a partial cross-sectional view of an energy storage cabinet provided in some embodiments of the present disclosure, wherein the handle is in a first state;

[0030] Figure 3 is a partial enlarged schematic diagram of Figure 2;

[0031] Figure 4 is a partial cross-sectional view of an energy storage cabinet provided in some embodiments of the present disclosure, wherein the handle is in a second state;

[0032] Figure 5 is a partial structural schematic diagram of an energy storage cabinet provided in some embodiments of this disclosure, wherein the handle is in a first state;

[0033] Figure 6 is a partial structural schematic diagram of an energy storage cabinet provided in some embodiments of this disclosure, wherein the handle is in a second state.

[0034] Explanation of reference numerals in the attached drawings: 100-Energy storage cabinet; 10-Cabinet body; 20-Cabinet door; 20a-Outer side; 20b-Inner side; 21-Groove; 211-Mounting hole; 212-Keyhole; 30-Door handle assembly; 31-Handle; 32-Connecting rod; 33-Limiting component; 34-Fastener; 35-Spring component; 311-First handle end; 312-Second handle end; 331-Flange; 331a-Annular plane; 332-Boss; 332a-Limiting step; 333-Through hole; 40-Battery. Detailed Implementation

[0035] The embodiments of the technical solutions disclosed herein will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solutions disclosed herein and are therefore intended to limit the scope of protection of this disclosure.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this disclosure, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments of this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0040] In the description of the embodiments of this disclosure, the technical terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0041] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0042] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0043] The following is a detailed description of this disclosure.

[0044] Energy storage cabinets are integrated devices that combine energy storage and power supply to loads. They are characterized by high efficiency, flexibility, convenience, and reliability, and are widely used in industrial, commercial, and residential sectors. Therefore, energy storage cabinets can be flexibly applied to a wider range of scenarios. Consequently, there is a desire to transport more energy storage cabinets to different application sites. However, during transportation, the door handles of energy storage cabinets protrude from the cabinet doors, increasing the risk of collisions. Sufficient clearance must be maintained between adjacent cabinets during transport, resulting in low space utilization. Furthermore, the overall design of energy storage cabinets is not particularly streamlined.

[0045] In response to the above situation, the inventors of this disclosure have designed an energy storage cabinet with a concealed door handle. When the door is not needed, the door handle is hidden inside the cabinet door. When the door needs to be opened, the door handle pops out, which can reduce the risk of bumps and knocks, especially during transportation. It can also reduce the space occupied, which is conducive to the more compact arrangement of multiple energy storage cabinets, so that the transportation equipment can accommodate more energy storage cabinets. In addition, it can also make the overall energy storage cabinet more concise.

[0046] Based on this design concept, this disclosure provides a cabinet that houses batteries and has an opening; a cabinet door connected to the cabinet, capable of opening and closing the opening, with an inwardly recessed groove on the outer side of the door; and a door handle assembly including a handle movably mounted in the groove of the cabinet door, allowing the handle to switch between a first state and a second state. In the first state, the handle is recessed in the groove; in the second state, the handle portion is outside the groove. The groove has a mounting hole. The door handle assembly also includes a connecting rod connected to the handle, a limiting member fastened to the connecting rod, and a spring member sleeved on the connecting rod. The connecting rod passes through the mounting hole, and the limiting member is located inside the cabinet door. The spring member is located between the handle and the cabinet door at the groove and is in a compressed state. In the first state, the limiting member limits the position of the connecting rod relative to the mounting hole, and the handle is recessed in the groove against the spring force of the spring member. One end of the spring member can be connected to the handle, and the other end of the spring member can be connected to the cabinet door at the groove.

[0047] The handle can switch between a first state where it is recessed into a groove and a second state where it is outside the groove. When the cabinet door needs to be opened, the handle is exposed outside the groove for easy gripping and opening. When the cabinet door does not need to be opened, the handle is hidden in the groove, reducing the risk of bumps, especially during transportation. It also reduces space occupation, allowing for a more compact arrangement of multiple energy storage cabinets, thus enabling the transport of more energy storage cabinets within a limited space. In addition, it makes the overall energy storage cabinet more streamlined. Furthermore, in the first state, the limiting member restricts the position of the connecting rod relative to the mounting hole, reducing the wobbling of the connecting rod and the handle. The spring member is located between the handle and the cabinet door at the groove and is in a compressed state. The compressed spring member applies a spring force away from the groove to the handle, ensuring that the limiting member is stably pressed against the cabinet door, further improving the reliability of the limiting.

[0048] The energy storage cabinet of this disclosure can be applied to new energy power plants, smart grids, electric vehicle charging piles and other fields, as well as industrial, residential, commercial building and other fields, communication base stations and data centers, transportation facilities and other fields.

[0049] The energy storage cabinet provided in this application embodiment is an energy storage device, including one or more battery clusters to improve the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage cabinet includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0050] In this embodiment of the disclosure, the battery device can be a secondary battery, which refers to a battery that can be used again after being discharged by recharging to activate the active materials.

[0051] The battery device can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments disclosed herein are not limited to this.

[0052] A battery device includes at least one battery cell, which typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0053] In some embodiments, the battery device may include a battery module, which comprises one or more battery cells as a single physical module to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar. Multiple battery cells are arranged and fixed to form a battery module.

[0054] In some embodiments, the battery device may be a battery pack, which includes a housing and individual battery cells, with the individual battery cells or battery modules housed within the housing.

[0055] Energy storage cabinets can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. They can store electrical energy as needed and output it when appropriate. For example, energy storage cabinets can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage cabinets provided in this application embodiment can also be used in vehicle charging stations, vehicle charging piles, and other similar scenarios.

[0056] In some embodiments, one or more battery clusters are housed within the cabinet of the energy storage unit.

[0057] In some embodiments, the energy storage cabinet may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0058] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device via piping to regulate the temperature of the individual battery cells.

[0059] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes a slave battery management unit (SBMU), a fusion switch, and other modules.

[0060] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an Insulation Monitoring Module (IMM), a Master Battery Management Unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0061] As an example, a fire protection system includes control panels, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in energy storage cabinets.

[0062] As an example, the power distribution unit can be used to distribute power to the power modules of the energy storage cabinet.

[0063] The energy storage cabinet 100 of the present disclosure will now be described in detail with reference to Figures 1 to 6.

[0064] This disclosure provides an energy storage cabinet 100, including: a cabinet body 10 for housing a battery 40, the cabinet body 10 having an opening; a cabinet door 20 connected to the cabinet body 10, capable of opening and closing the opening, the outer side 20a of the cabinet door 20 having a recessed groove 21 facing inward; and a door handle assembly 30 including a handle 31, the handle 31 being movably mounted in the groove 21 of the cabinet door 20, thereby allowing the handle 31 to switch between a first state and a second state. In the first state, the handle 31 is recessed in the groove 21; in the second state, the handle 31 is partially outside the groove 21. The groove 21 is provided with a mounting hole 211. The door handle assembly 30 also includes a connecting rod 32 connected to the handle 31, a limiting member 33 fastened to the connecting rod 32, and a spring member 35 sleeved on the connecting rod 32. The connecting rod 32 passes through the mounting hole 211 and the limiting member 33 is located inside the cabinet door 20. The spring member 35 is located between the handle 31 and the cabinet door 20 at the groove 21 and is in a compressed state. In the first state, the limiting member 33 limits the position of the connecting rod 32 relative to the mounting hole 211, and the handle 31 is recessed into the groove 21 in a state of resisting the elastic pressure of the spring member 35.

[0065] The cabinet 10 provides storage space for components such as the battery 40, serving a protective function. In some embodiments, a bracket for supporting the battery 40 is provided in the storage space. The battery 40 located in the storage space can be the battery described above, which will not be repeated here. The storage space may also house electronic control components, cooling equipment, etc.

[0066] The energy storage cabinet 100 is typically connected to the power grid, storing electrical energy from the grid as chemical energy in a battery. Alternatively, the energy storage cabinet 100 can be connected to the power grid via an inverter, or via a transformer.

[0067] For example, the cabinet 10 may be equipped with a charging interface and a power supply interface. When energy storage is needed, the charging interface is connected to the power grid to charge the battery 40. When power supply is needed, the power supply interface is connected to the load to supply power to the load. The power supply interface and the load can always be connected and powered on according to control, or the power supply interface can be connected to the load only when charging is needed and powered on according to control.

[0068] The cabinet 10 can have various shapes, such as cuboid or cylindrical. For example, the cabinet 10 can be cuboid.

[0069] The cabinet 10 has an opening, and a cabinet door 20 is connected to the cabinet 10, allowing the opening to be opened and closed. The cabinet door 20 and the cabinet 10 form a receiving space for storing the battery 40. For example, the cabinet door 20 is pivotally connected to the cabinet 10.

[0070] The outer surface 20a of the cabinet door 20 is provided with a recessed groove 21 facing inward. The shape of the groove 21 can be adapted to the shape of the handle 31, or it can be a different shape from the handle 31. For example, the groove 21 can be elongated or other shapes. The groove 21 is formed to accommodate the handle 31 and at least allow one end of the handle 31 to rotate within the groove 21. In a specific embodiment, as shown in Figures 5 and 6, the handle 31 is formed as an elongated strip, the groove 21 is formed with an elongated oval opening, and the groove length of the groove 21 is slightly longer than the handle 31, and the groove width of the groove 21 is wider than the width of the handle 31. For example, gaps are formed on both sides of the handle 31 in the width direction X.

[0071] The handle 31 is movably mounted in the recess 21 of the cabinet door 20. This movement includes the handle 31 tilting and resetting relative to the recess 21 in a direction perpendicular to the door panel, and the handle 31 rotating within a certain range about the connecting rod 32 (described in detail later). This movement allows the handle 31 to switch between a first state and a second state. In the first state, the handle 31 is recessed in the recess 21; in the second state, the handle 31 is partially outside the recess 21. The handle 31 can move towards or away from the recess 21 at least along the groove depth direction Y and can rotate relative to the recess 21. When the handle 31 approaches the recess 21, it is at least partially recessed; when it moves away from the recess 21, it is outside the recess 21. These movements are achieved by forces from the outside of the cabinet door 20 (e.g., pressure applied by the operator, torque applied by the operator, etc.).

[0072] The handle 31 may be recessed into the groove 21 in two ways: a portion of the handle 31 in the thickness direction (indicated by arrow Y in Figure 2) may be hidden in the groove 21, while another portion in the thickness direction protrudes from the groove 21; alternatively, the entire handle 31 in the thickness direction may be hidden in the groove 21. In some embodiments, the handle 31 is completely recessed into the groove 21. In this state, the outer surface of the handle 31 is exposed, allowing the operator to confirm its location by observation. Additionally, markings or symbols may be provided on the outer surface of the handle 31 to facilitate quick identification of the handle's position by the operator.

[0073] In the second state, the handle 31 is partially located outside the recess 21, allowing the operator to grip and operate the portion of the handle 31 outside the recess 21. In some embodiments, one end of the handle 31 is raised relative to the door panel at the edge of the recess 21 in the cabinet door 20 and located outside the recess 21. Here, the portion outside the recess 21 can be a portion of the total length of the handle 31, such as 1 / 3, 1 / 2, 2 / 3, 4 / 5, etc.

[0074] The handle 31, which is raised at one end relative to the groove 21, forms a certain angle with the bottom surface of the groove 21. For handles of the same length, the larger the maximum angle that can be formed, the longer the part outside the groove 21.

[0075] The groove 21 is provided with a mounting hole 211, which is a through hole through the door panel of the cabinet door 20 along the thickness direction of the cabinet door 20 (indicated by arrow Y in Figure 2).

[0076] One end of the connecting rod 32 is connected to the handle 31, and the other end passes through the mounting hole 211. Exemplarily, one end of the connecting rod 32 is welded to the handle 31, and the other end has a threaded section. The connecting rod 32 is welded substantially perpendicular to the handle 31. The inner diameter of the mounting hole 211 is larger than the outer diameter of the connecting rod 32 and has a certain clearance; therefore, a limiting member 33 is needed to limit the state of the connecting rod 32. The limiting function of the limiting member 33 includes preventing the connecting rod 32 from dislodging from the mounting hole 211 in both the first and second states, and ensuring that the handle 31 is in a nearly stable state relative to the mounting hole 211 in the first state.

[0077] One end of the spring member 35 can be connected to the handle 31, and the other end of the spring member 35 can be connected to the cabinet door 20 at the groove 21. The connection can be such that one end of the spring member 35 can abut against or be fixed to the handle 31, and the other end of the spring member 35 can abut against or be fixed to the cabinet door 20 at the groove 21.

[0078] The handle 31 can switch between a first state where it is recessed in the groove 21 and a second state where it is outside the groove 21. When the cabinet door 20 needs to be opened, the handle 31 is partially exposed outside the groove 21 for easy opening. When the cabinet door 20 does not need to be opened, the handle 31 is hidden in the groove 21, reducing the risk of bumps, especially during transportation. It also reduces space occupation, allowing multiple energy storage cabinets to be arranged more compactly. This allows more energy storage cabinets 100 to be transported in a limited space, and also makes the overall design of the energy storage cabinet 100 more concise. In addition, in the first state, the limiting member 33 limits the position of the connecting rod 32 relative to the mounting hole 211, reducing the amount of wobbling of the connecting rod and the handle. The spring member 35 is located between the handle 31 and the cabinet door 20 at the groove 21 and is in a compressed state. The compressed spring member 35 applies a spring force to the handle 31 away from the groove 21, so that the limiting member 33 is stably pressed against the cabinet door 20, further improving the reliability of the limiting.

[0079] In some embodiments, the groove 21 is provided with a keyhole 212. In a first state, the handle 31 blocks the keyhole 212. In a second state, the handle 31 can rotate relative to the groove 21 to avoid the keyhole 212.

[0080] When the handle 31 is recessed in the groove 21, the handle 31 blocks the keyhole 212. When the handle 31 is outside the groove 21, the handle 31 can rotate relative to the groove 21 to avoid the keyhole 212. For example, the handle 31 can rotate along an axis extending in the groove depth direction Y so that the handle 31 avoids the keyhole 212, thereby exposing the keyhole 212 to the outside for opening and closing the lock.

[0081] A locking mechanism is also provided inside the cabinet door via the keyhole 212. This locking mechanism, in conjunction with a locked mechanism located on the cabinet side, enables the cabinet door to be locked and unlocked relative to the cabinet body. The locking mechanism and the locked mechanism can employ known structures, and this disclosure does not impose any particular limitation. For example, the locking mechanism may be a hook that rotates with the key, and the locked mechanism may be a fixed locking bar; as the key rotates, the hook can switch between a locked state (hooked on the locking bar) and an unlocked state (disengaged from the locking bar).

[0082] In the first state where the handle 31 is recessed into the groove 21, the handle 31 can not only be hidden in the groove 21, but also block the keyhole 212, thereby protecting the keyhole 212 and reducing the risk of foreign objects entering and blocking the keyhole 212; in the second state where the handle 31 is outside the groove 21, the handle 31 is rotated to avoid the keyhole 212, so that the key can be smoothly inserted into the keyhole 212.

[0083] In some embodiments, as shown in Figures 2 to 4, the limiting member 33 has a flange portion 331 and a boss portion 332 connected to each other, and also has a through hole 333 penetrating the flange portion 331 and the boss portion 332. The connecting rod 32 is inserted into the through hole 333. In the first state, the flange portion 331 abuts against the inner side surface 20b of the cabinet door 20, and the boss portion 332 is inserted into the mounting hole 211, thereby defining the position of the connecting rod 32 relative to the mounting hole 211.

[0084] For example, the flange portion 331 and the boss portion 332 can be connected by welding or can be integrally formed parts. The through hole 333 can be a hole with a smooth inner circumferential surface or a hole with an internal thread on its inner circumferential surface. The through hole 333 mates with the outer circumferential surface of the connecting rod 32. For example, the outer circumferential surface of the connecting rod 32 has an external thread, and the inner circumferential surface of the through hole 333 has an internal thread, through which the limiting member 33 can be connected to the connecting rod 32. Moreover, the position of the limiting member 33 relative to the connecting rod 32 can be fixed along the axial direction of the connecting rod 32.

[0085] As a way of fixing the limiting member 33 relative to the connecting rod 32, in some embodiments, as shown in FIG3, a limiting step 332a is provided on the outer peripheral surface of the connecting rod 32. The limiting step 332a is arranged around the circumference of the connecting rod 32. The connecting rod 32 is provided with a fastener 34, and the limiting member 33 is fastened between the fastener 34 and the limiting step 332a.

[0086] As shown in Figure 3, the limiting step 332a can be implemented by a shoulder structure formed circumferentially around the connecting rod 32. Specifically, the portion of the connecting rod 32 located in the through hole 333 is slightly thinner than the portion not inserted into the through hole 333. A portion of the end face of the boss portion 332 nested in the limiting member 33 of the connecting rod 32 abuts against the limiting step 332a axially. A fastener 34 is installed on the side of the limiting member 33 away from the handle 31. The fastener 34 engages with the thread on the connecting rod 32 to fix the limiting member 33 between the limiting step 332a and the fastener 34. For example, the fastener 34 can be a nut. Alternatively, the end face of the boss portion 332 can be a flat end face or have a small stepped surface that mates with the limiting step 332a.

[0087] In the first state (as shown in Figure 2), the spring force of the spring member 35 causes the flange portion 331 to abut against the inner side surface 20b of the cabinet door 20, thereby keeping the handle 31 in the groove 21. The boss portion 332 is inserted into the mounting hole 211, reducing the amount of wobbling of the handle 31. In the second state (as shown in Figure 4), the boss portion 332 is removed from the mounting hole, allowing the connecting rod 32 to tilt appropriately in the mounting hole 211. When the connecting rod 32 is tilted, the flange portion 331 can partially abut against the inner side surface 20b, which to some extent limits the tilting range of the connecting rod 32. By tilting the connecting rod 32, one end of the handle 31 connected to the connecting rod 32 is recessed into the groove 21, while the other end protrudes outside the groove 21.

[0088] In some specific embodiments, referring to FIG3, the boss portion 332 has an outer circumferential surface. In a first state, the outer circumferential surface of the boss portion 332 is in contact with the inner circumferential surface of the mounting hole 211 or there is a slight gap between them. The contact between the outer circumferential surface of the boss portion 332 and the inner circumferential surface of the mounting hole 211 reduces the risk of the handle 31 wobbling.

[0089] In some specific embodiments, referring to FIG3, the flange portion 331 has an annular plane 331a, which contacts the inner side surface 20b of the cabinet door 20. The contact between the annular plane 331a of the flange portion 331 and the inner side surface 20b of the cabinet door 20 increases the contact area, reduces the risk of the handle 31 shaking, and improves the stability of the handle 31.

[0090] In some embodiments, the limiting member 33 is detachably connected to the connecting rod 32. For example, the limiting member 33 can be removed from the connecting rod 32 from the inside of the cabinet door 20 (the rear side of the cabinet door 20) by removing the fastener 34. This facilitates installation, maintenance, and replacement.

[0091] The connection between the connecting rod 32, the boss portion 332, and the mounting hole 211 on the cabinet door 20 reliably prevents the connecting rod 32 from wobbling in the mounting hole 211. The connection between the flange portion 331 and the inner side of the cabinet door 20 (the back of the cabinet door 20) limits the position of the handle 31 along the axial direction of the connecting rod 32, so that the connecting rod 32 will not come out of the mounting hole 211 to the outside of the cabinet door 20.

[0092] In addition, since the limiting member 33 is fastened between the fastener 34 and the limiting step 332a, the risk of the limiting member 33 shaking is reduced when the handle 31 is embedded in the groove 21, and the limiting member 33 and the connecting rod 32 are easy to install and remove, thereby facilitating the installation and removal of the door handle assembly relative to the cabinet door 20.

[0093] In some embodiments, in the second state, the boss 332 disengages from the mounting hole 211 under the force from the outside of the cabinet door 20, and there is a gap between the connecting rod 32 and the mounting hole 211. In the second state, under the force from the outside of the cabinet door 20, one end of the handle 31 along the length direction Z is located inside the groove 21, and the other end of the handle 31 along the length direction Z is located outside the groove 21. The length direction Z is perpendicular to the groove depth direction Y of the groove 21.

[0094] With the cabinet door 20 closed, the handle 31 is typically in its first state (see Figure 2). When it is necessary to open the cabinet door 20, first press the handle 31 to disengage the protrusion 332 from the mounting hole 211 towards the inside of the cabinet door 20. This creates a gap between the connecting rod 32 and the mounting hole 211, allowing the connecting rod 32 to tilt within the mounting hole 211. Further pressing one end of the handle 31 along its length Z moves that end closer to the groove 21. Simultaneously, due to the gap between the connecting rod 32 and the mounting hole 211, the other end of the handle 31 along its length Z moves away from the groove 21 and is positioned outside the groove 21, in a raised position, thus facilitating the operator's grip. This switches the handle 31 from its first state (as shown in Figure 2) to its second state (as shown in Figure 4). In this second state, the operator can grip the handle 31 and rotate it (e.g., clockwise) to a position away from the keyhole 212 to facilitate key insertion, thereby opening or closing the cabinet door. When the cabinet door does not need to be opened or closed, the operator can hold the handle 31 and rotate it (e.g., counterclockwise) to the position that blocks the keyhole 212, and then release the handle 31. The spring force of the spring member 35 causes the handle 31 to sink into the groove 21, and the boss part 332 re-enters the mounting hole 211.

[0095] Therefore, when the handle 31 is not needed, it can be recessed into the groove 21, and when needed, it can be easily put into a grippable state. The keyhole 212 can also be covered and exposed by rotating the handle 31, which facilitates locking and unlocking operations of the cabinet door 20.

[0096] In some embodiments, along the length direction of the handle 31, the handle 31 includes a first handle end 311 and a second handle end 312, and the distance of the first handle end 311 relative to the connecting rod 32 is different from the distance of the second handle end 312 relative to the connecting rod 32.

[0097] When it is necessary to open or close the cabinet door, the handle end that is closer to the connecting rod 32 between the first handle end 311 and the second handle end 312 can be pressed. This allows for a larger exposure of the handle 31 with a shorter pressing stroke and a smaller pressing force, based on the lever principle, making it easier to grip the handle 31.

[0098] For example, as shown in Figures 2 to 4, the first handle end 311 is closer to the connecting rod 32. When it is necessary to open or close the cabinet door, the first handle end 311 can be pressed so that the second handle end 312 is more exposed in the groove 21, making it easier to hold.

[0099] In some embodiments, as shown in Figures 2 to 4, the connecting rod 32 is disposed near the first handle end 311, and along the length direction of the groove 21, the keyhole 212 is disposed closer to the second handle end 312 than the mounting hole 211.

[0100] Regarding the positioning of the connecting rod 32 along the length of the handle 31, the connecting rod 32 can be positioned offset towards one side of the handle end. For example, the connecting rod 32 can be positioned at 1 / 3, 1 / 4, or 1 / 5 of the total length of the handle from the first handle end 311. Since the handle 31 can rotate in the second state, the design needs to consider the groove width of the recess 21 and the distance between the connecting rod 32 and the first handle end 311, as long as it allows the connecting rod 32 to rotate to a position that exposes the keyhole 212 without obstructing the rotation of the key.

[0101] This allows the keyhole to be easily exposed and provides enough space for the key to rotate.

[0102] In some embodiments, the handle 31 is provided with a marking for indicating the pressing position.

[0103] For example, a mark may be provided on the surface of the handle 31 facing the user, which may indicate the location that needs to be pressed or the location of the keyhole 212.

[0104] This makes it easy and convenient for users to operate the system accurately.

[0105] In some embodiments, the groove 21 is formed by bending the door panel of the cabinet door 20.

[0106] The cabinet door 20 can be made of metal or resin. The groove 21 can be formed by bending, stamping or other processes on the metal door panel; the groove 21 can be formed by bending the resin door panel during molding.

[0107] Therefore, even if the door panel of cabinet door 20 is a relatively thin structural component, a concealed door handle can still be installed.

[0108] The following describes specific examples of this disclosure with reference to Figures 1 to 6.

[0109] This disclosure provides an energy storage cabinet 100, including: cabinet body 10, cabinet door 20 and battery 40.

[0110] The cabinet 10 has an opening, and the cabinet door 20 is pivotally connected to the cabinet 10 and can be opened and closed. The cabinet door 20 and the cabinet 10 form a storage space for storing the battery 40. The outer side 20a of the cabinet door 20 is provided with a recessed groove 21 facing inward. The length and width of the groove 21 are greater than the length and width of the handle 31, and the depth of the groove 21 is greater than the thickness of the handle 31. The bottom surface of the groove 21 is provided with a mounting hole 211 and a key hole 212. The door handle assembly 30 includes a connecting rod 32 connecting the handle 31, a limiting member 33 fastened to the connecting rod 32, and a spring member 35 sleeved on the connecting rod 32. The connecting rod 32 and the handle 31 can be an integral structure. One end of the connecting rod 32 is connected to the handle 31, and the other end of the connecting rod 32 passes through the mounting hole 211 and is connected to the limiting member 33 located inside the cabinet door 20. There is a gap between the connecting rod 32 and the mounting hole 211, so that the connecting rod 32 can move in the front-back direction (in the direction indicated by arrow Y in the figure), move in the up-down direction (in the direction indicated by arrow Z in the figure), and rotate relative to the mounting hole 211. The spring 35 is located between the handle 31 and the cabinet door 20 at the groove 21 and is in a compressed state.

[0111] The outer peripheral surface of the connecting rod 32 is provided with a limiting step 332a. The limiting member 33 includes a flange portion 331, a boss portion 332 and a through hole 333. The axial end face of the boss portion 332 abuts against the axial step surface of the limiting step 332a. The limiting member 33 is sleeved on the connecting rod 32 through the through hole 333. The connecting rod 32 is provided with a fastener 34. The limiting member 33 is fastened between the fastener 34 and the limiting step 332a.

[0112] The handle 31 can switch between a first state (Figures 2 and 5) and a second state (Figures 4 and 6). The first state is when the handle 31 is hidden in the groove 21, and the second state is when the handle 31 is partially exposed outside the groove 21. When the cabinet door 20 does not need to be opened or closed, the handle 31 is in the first state; when the cabinet door 20 needs to be opened or closed, the handle 31 is in the second state.

[0113] In the first state where the cabinet door 20 is closed, referring to Figures 2 and 5, the handle 31 is fully located in the groove 21, the spring 35 is in a compressed state, so that the flange 331 of the limiting member 33 abuts against the inner side 20b of the cabinet door 20, and at the same time, the boss 332 of the limiting member 33 is inserted into the mounting hole 211, and the longer second handle end 312 of the handle 31 blocks the keyhole 212.

[0114] When the cabinet door needs to be opened, the handle 31 needs to be switched from the first state to the second state. First, press the handle 31 to disengage the protrusion 332 in the limiting member 33 from the mounting hole 211. Then, press the first handle end 311 in the handle 31. At this time, due to the gap between the connecting rod 32 and the mounting hole 211, the connecting rod 32 is tilted, and the part of the flange 331 of the limiting member 33 near the second handle end 312 can abut against the inner side 20b of the cabinet door 20 to form a support point. As the first handle end 311 moves closer to the groove 21, the second handle end 312 moves away from the groove 21 and is exposed (as shown in Figure 4). This achieves the switching of the handle 31 from the first state to the second state. In the second state, the second handle end 312 and the handle part exposed in the groove 21 can be held and rotated to make the handle part on the side of the second handle end 312 avoid the keyhole 212, thereby exposing the keyhole 212 (as shown in Figure 6). At this time, the key can be inserted into the keyhole to perform the unlocking or locking operation. Additionally, when the key is always inserted in the keyhole, the handle 31 can be prevented from resetting, thus facilitating quick locking after the door is closed. After the key is removed, the handle 31 can reset to the first state.

[0115] The above embodiments are merely illustrative of the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure, and all should be covered within the scope of this disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of this disclosure.

Claims

1. An energy storage cabinet, comprising: The cabinet houses the batteries and has an opening. The cabinet door, connected to the cabinet body, allows the opening to be opened and closed. The outer side of the cabinet door has a recessed groove facing inwards. A door handle assembly includes a handle movably mounted in the recess of the cabinet door, thereby enabling the handle to switch between a first state and a second state. In the first state, the handle is recessed into the groove; in the second state, the handle portion is outside the groove. The groove is provided with mounting holes. The door handle assembly also includes a connecting rod connected to the handle, a limiting member fastened to the connecting rod, and a spring member sleeved on the connecting rod. The connecting rod passes through the mounting hole and the limiting member is located inside the cabinet door. The spring member is located between the handle and the cabinet door at the groove and is in a compressed state. In the first state, the limiting member defines the position of the connecting rod relative to the mounting hole, and the handle is recessed into the groove in a state of resisting the elastic force of the spring member.

2. The energy storage cabinet according to claim 1, wherein, The groove is provided with a keyhole. In the first state, the handle blocks the keyhole; in the second state, the handle can rotate relative to the groove to avoid the keyhole.

3. The energy storage cabinet according to claim 1 or 2, wherein, The limiting member has a flange portion and a boss portion connected to each other, and also has a through hole penetrating the flange portion and the boss portion, into which the connecting rod is inserted. In the first state, the flange abuts against the inner side of the cabinet door, and the boss is inserted into the mounting hole, thereby defining the position of the connecting rod relative to the mounting hole.

4. The energy storage cabinet according to any one of claims 1 to 3, wherein, The outer circumferential surface of the connecting rod is provided with a limiting step, which is arranged around the circumference of the connecting rod. The connecting rod is provided with a fastener, and the limiting member is fastened between the fastener and the limiting step.

5. The energy storage cabinet according to claim 3, wherein, In the second state, the boss portion disengages from the mounting hole under the force from the outside of the cabinet door, and there is a gap between the connecting rod and the mounting hole. In the second state, under the action of a force from the outside of the cabinet door, one end of the handle along the length direction is located inside the groove, and the other end of the handle along the length direction is located outside the groove, the length direction being perpendicular to the groove depth direction.

6. The energy storage cabinet according to claim 5, wherein, Along the length of the handle, the handle includes a first handle end and a second handle end. The distance between the first handle end and the connecting rod is different from the distance between the second handle end and the connecting rod.

7. The energy storage cabinet according to claim 6, wherein, The connecting rod is located near the end of the first handle. Along the length of the groove, the keyhole is positioned closer to the end of the second handle than the mounting hole.

8. The energy storage cabinet according to any one of claims 1 to 7, wherein, The handle is provided with markings to indicate the pressing position.

9. The energy storage cabinet according to any one of claims 1 to 8, wherein, The groove is formed by bending the cabinet door panel.

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