Energy storage device and energy storage system

Abstract

The utility model provides an energy storage device and an energy storage system. A battery device in the energy storage device is provided with a first connecting structure; the battery device is arranged on a bracket of the bin body, and the bracket is provided with a second connecting structure; the locking device comprises a locking structure and a driving mechanism, the locking structure is in transmission connection with the driving mechanism, the locking structure is movably connected to the bracket, and the locking structure is provided with an unlocking position and a locking position; and the locking structure is configured to connect the first connecting structure and the second connecting structure under the driving of the driving mechanism and keep the first connecting structure and the second connecting structure at a locking position. The driving mechanism can drive the locking structure to connect the first connecting structure and the second connecting structure and keep the first connecting structure and the second connecting structure at the locking position, so that the battery device is kept and locked on the bracket of the bin body, and the driving mechanism can drive the locking structure to be switched between the locking position and the unlocking position. The locking and unlocking of the battery device on the bracket are realized, so that the battery device in the energy storage device can be conveniently disassembled and assembled.

Description

TECHNICAL FIELD

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

[0002] The battery device has the advantages of high specific energy and high power density, and is widely used in energy storage devices such as energy storage containers or energy storage cabinets. The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems or temporary power supply systems.

[0003] Since the energy storage device needs to have a large capacity and can continuously output electric energy, it needs to accommodate a large number of battery devices. These battery devices accommodated in the energy storage device not only need to be fixed in the storage body of the energy storage device to reduce the possibility of collision between the battery device and the wall of the energy storage device, but also need to be easily removed from the storage body for maintenance. How to realize the convenient disassembly of the battery device in the energy storage device is increasingly concerned by the technical personnel in the field. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides an energy storage device and an energy storage system. The battery device in the energy storage device has good disassembly convenience.

[0005] In a first aspect, the present application provides an energy storage device, which comprises a battery device, a storage body and a locking device. The battery device is provided with a first connecting structure. The storage body accommodates the battery device. The storage body comprises a bracket, and the battery device is placed in the bracket. The bracket is provided with a second connecting structure. The locking device comprises a locking structure and a driving mechanism. The locking structure is drivingly connected to the driving mechanism. The locking structure is movably connected to the bracket. The locking structure has an unlocking position and a locking position. The locking structure is configured to connect the first connecting structure and the second connecting structure under the driving of the driving mechanism and keep them in the locking position. The locking structure comprises a latch. The first connecting structure comprises a plug hole. The second connecting structure comprises a through hole. In the arrangement direction of the bracket and the battery device, the through hole penetrates through the bracket and communicates with the plug hole. Under the driving of the driving mechanism, the latch is inserted into the plug hole through the through hole and kept in the locking position or the latch is switched from the locking position to the unlocking position.

[0006] In the above structure, the driving mechanism can drive the locking structure to connect the first connecting structure and the second connecting structure and keep them in the locked position, so that the battery device is locked on the bracket of the compartment. The driving mechanism can also drive the locking structure to switch between the locked position and the unlocked position, realizing the locking and unlocking of the battery device on the bracket, making it easy to disassemble and assemble the battery device in the energy storage device, and making the maintenance and replacement of the battery device convenient. The locking structure is configured to include a pin, the first connecting structure is configured to include a plug hole, and the second connecting structure is configured to include a through hole, so that the pin can be easily passed through the through hole to reach the locking position under the drive of the driving mechanism, and inserted into the plug hole to realize the connection of the first connecting structure and the second connecting structure. The pin can also be easily disengaged from the plug hole under the drive of the driving mechanism, releasing the connection between the first connecting structure and the second connecting structure, which helps to improve the convenience of connecting and disconnecting the first connecting structure and the second connecting structure.

[0007] According to some embodiments of the present application, the energy storage device includes an operating structure and a transmission component connected to each other. The operating structure is configured to drive the locking structure to switch between an unlocked position and a locked position via the transmission component.

[0008] According to some embodiments of the present application, the energy storage device includes a transmission component including a rotating link rotatably connected to a bracket, and an operating structure including a rotating handle, wherein the rotating handle and a locking structure are both connected to the rotating link.

[0009] According to some embodiments of the present application, the energy storage device further includes a positioning member and a positioning structure. The positioning structure is sleeved on the rotating connecting rod and has a positioning hole that passes through the axial direction of the rotating connecting rod. The bracket has a first hole and a second hole that pass through the axial direction of the rotating connecting rod. The positioning member passes through the positioning hole and is inserted into the first hole to keep the locking structure in the locked position, or the positioning member passes through the positioning hole and is inserted into the second hole to keep the locking structure in the unlocked position.

[0010] According to some embodiments of this application, the energy storage device includes a tray and a bracket, the battery device is placed on the tray, the bracket is located on the side of the tray away from the battery device and is connected to the tray, and a rotating link is rotatably connected to the bracket.

[0011] According to some embodiments of the present application, the energy storage device has a relief notch that extends through the support along its thickness and communicates with the end face of the support away from the support plate. Along the rotation direction of the rotating link, the relief notch is disposed opposite to the locking structure. When the locking structure is in the unlocked position, at least a portion of the locking structure is located in the relief notch.

[0012] According to the energy storage device provided by some embodiments of the present application, the operation structure comprises a pushing structure and a first elastic member, the first elastic member is located on the side of the bracket away from the battery device, the locking structure is connected to the bracket through the first elastic member, and the pushing structure is drivingly connected to the locking structure; under the elastic force of the first elastic member, the locking structure connects the first connecting structure and the second connecting structure and keeps them in the locked position; the pushing structure is configured to be capable of pushing the locking structure to switch from the locked position to the unlocked position.

[0013] According to the energy storage device provided by some embodiments of the present application, the transmission assembly comprises a transmission baffle and a limiting mechanism with a limiting block, the limiting block is located on the side of the bracket away from the battery device, and at least part of the limiting block is arranged opposite to the bracket along the arrangement direction of the bracket and the battery device, the transmission baffle is located on the side of the bracket away from the battery device, and the transmission baffle connects the locking structure and the pushing structure; in the state that the locking structure is in the locked position, the first elastic member abuts the transmission baffle against the surface of the bracket away from the battery device; in the state that the locking structure is in the unlocked position, the limiting block blocks the transmission baffle on the side of the limiting block away from the bracket.

[0014] According to the energy storage device provided by some embodiments of the present application, the limiting block is provided with a guide surface and an abutting surface, the guide surface has a component in the direction of the bracket and forms an acute angle with the arrangement direction of the bracket and the battery device, and the abutting surface is used for abutting the transmission baffle.

[0015] According to the energy storage device provided by some embodiments of the present application, the limiting mechanism further comprises a pull rod and a second elastic member, the second elastic member is connected with the limiting block and the bracket, the limiting block is slidingly connected to the bracket along a first direction through the pull rod, the first direction is perpendicular to the arrangement direction of the bracket and the battery device; under the elastic force of the second elastic member, at least part of the limiting block extends between the bracket and the transmission baffle; the pull rod is configured to be capable of driving the limiting block to escape from between the bracket and the transmission baffle.

[0016] In the second aspect, the present application provides an energy storage system, which comprises a power conversion device and one or more energy storage devices provided by any of the technical solutions above, and the power conversion device is used for electrically connecting a power generation device and the one or more energy storage devices.

[0017] The technical solutions provided by the embodiments of the present application at least bring the following beneficial effects:

[0018] The application provides a kind of energy storage device, which includes battery device, warehouse body and locking device, battery device is provided with first connecting structure;Warehouse body contains battery device, warehouse body includes bracket, battery device is placed in bracket, bracket is provided with second connecting structure;Locking device includes locking structure and driving mechanism, locking structure is drivingly connected to driving mechanism, locking structure is movably connected to bracket, locking structure has unlocking position and locking position;Locking structure is configured to connect first connecting structure and second connecting structure under the driving of driving mechanism and keep in locking position;Locking structure includes bolt, first connecting structure includes insertion hole, second connecting structure includes through hole, along the arrangement direction of bracket and battery device, through hole passes through bracket and communicates with insertion hole;Under the driving of driving mechanism, bolt is inserted into insertion hole through through hole and kept in locking position or bolt is switched from locking position to unlocking position.In the above structure, driving mechanism can drive locking structure to connect first connecting structure and second connecting structure and keep in locking position, so that battery device is kept locked in the bracket of warehouse body, and driving mechanism can drive locking structure to switch between locking position and unlocking position, realize the locking and unlocking of battery device on bracket, so that battery device in the energy storage device can be conveniently disassembled, so that the maintenance and replacement of battery device are convenient.

[0019] The above description is only a summary of the technical solutions of the application, in order to more clearly understand the technical means of the application, which can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0020] By reading the following detailed description of preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the application. Moreover, the same reference symbols are used throughout the drawings to represent the same parts.

[0021] Figure 1 The internal schematic diagram of the energy storage device provided by some embodiments of the application is shown in the figure;

[0022] Figure 2 The connection schematic diagram of battery device and bracket provided by the first embodiment of the application is shown in the figure;

[0023] Figure 3 The connection schematic diagram of battery device and bracket provided by the second embodiment of the application is shown in the figure;

[0024] Figure 4 The schematic diagram of locking device provided by the first embodiment of the application in the state of locking battery device is shown in the figure;

[0025] Figure 5 Fig. 2 is a schematic view of the internal structure of the locking device provided in the second embodiment of the application;

[0026] Figure 6 Fig. 3 is a schematic view of the connection between the battery device and the bracket in another perspective provided in the second embodiment of the application;

[0027] Figure 7 Fig. 4 is a schematic view of the energy storage system provided in some embodiments of the application.

[0028] In the drawings:

[0029] 1, battery device; 11, first connecting structure; 2, cartridge body; 21, bracket; 211, supporting plate; 2111, second connecting structure; 212, support; 2121, first hole; 2122, second hole; 2123, avoiding notch; 213, mounting block; 3, locking device; 31, locking structure; 321, operating structure; 3211, pushing structure; 3212, first elastic member; 322, rotating link; 323, positioning structure; 3231, positioning hole; 324, transmission baffle; 325, limiting mechanism; 3251, limiting block; 32511, guiding surface; 32512, abutting surface; 3252, pull rod; 3253, second elastic member; 10, energy storage device; 20, power conversion device; 30, power generation device; X, first direction. DETAILED DESCRIPTION

[0030] The embodiments of the technical solutions of the application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the application, and therefore only serve as examples, and cannot be used to limit the protection scope of the application.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the application should be understood as the usual meanings understood by the skilled person in the field to which the embodiments of the application belong.

[0032] In the description of the embodiments of the application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the application.

[0033] In addition, the technical terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more (including two), unless otherwise explicitly specified and limited.

[0034] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0036] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to the energy storage device such as energy storage container or energy storage cabinet.

[0037] With the continuous expansion of the application field of battery device, the requirement for the reliability of battery device is also increasing.

[0038] The battery device (Battery Apparatus) mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include a plurality of battery cells connected in series, parallel or mixed connection through a busbar component.

[0039] In some embodiments, the battery cell assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery cells.

[0040] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0041] In some embodiments, the battery device can include one or more battery packs, which can include one or more battery cell assemblies. As an example, the battery pack includes a box and one or more battery cell assemblies, which are accommodated in the box, for example, by a fixing manner. As another example, the battery device includes a plurality of battery packs, which can be connected in series, in parallel, or in a mixed manner.

[0042] As an example, the box can include a first box and a second box. The first box and the second box are buckled so that an enclosed space is formed inside the box to accommodate the battery cell assembly. Here, the enclosed means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0043] As an example, the box can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected with the frame, respectively, so that an enclosed space is formed inside the box to accommodate the battery cell assembly.

[0044] In some embodiments, the plurality of battery packs included in the battery device can constitute one or more battery clusters, so that the energy storage device provided by the embodiments of the present application includes one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery packs, which are connected in series by a busbar to improve the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters can be connected in series, in parallel, or in a mixed manner.

[0045] The energy storage device can be used in an energy storage power station, a wind power system, a solar power system, a mobile power system, or a temporary power supply system, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during the off-peak period of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak period of electricity consumption. The energy storage system provided by the embodiments of the present application can be any power system that needs to use an energy storage device.

[0046] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0047] In some embodiments, the energy storage device can include a cabinet and one or more battery clusters, which are accommodated in the cabinet.

[0048] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, a fire control module, and the like.

[0049] As an example, the thermal management module can include a liquid cooling unit that provides cooling liquid to each battery device through a pipeline for adjusting the temperature of the battery cell.

[0050] As an example, the master control module can serve as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master control module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, and the like of the battery cluster can be controlled. The master control module includes a slave battery management unit SBMU, a fusion switch, and the like.

[0051] As an example, the general control module can serve as a 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 current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current, voltage, and the like of the energy storage device can be controlled. As an example, the general control module includes an insulation monitoring module IMM, a master battery management unit MBMU, an Ethernet ETH, an optical fiber conversion module, and the like.

[0052] As an example, the fire control module includes a control panel, a detector, an alarm device, and the like for detecting, alarming, or extinguishing the energy storage system.

[0053] As an example, the power distribution module can be used to distribute power to the power consumption modules of the energy storage device.

[0054] Since the energy storage device needs to be able to continuously output a large amount of electrical energy to the outside, it usually has a large capacity and is internally provided with a large number of battery devices. These battery devices are not only required to be firmly fixed in the cavity of the energy storage device to reduce the impact and knock of the battery device on the box body of the energy storage device, but also to be easily removed from the energy storage device for maintenance and replacement.

[0055] In order to improve the convenience of disassembly and assembly of the battery device in the energy storage device, the application provides an energy storage device, which comprises a battery device, a storage body and a locking device, the battery device is provided with a first connecting structure; the storage body contains the battery device, the storage body comprises a bracket, the battery device is placed in the bracket, and the bracket is provided with a second connecting structure; the locking device comprises a locking structure and a driving mechanism, the locking structure is in transmission connection with the driving mechanism, the locking structure is movably connected with the bracket, and the locking structure has an unlocking position and a locking position; the locking structure is configured to connect the first connecting structure and the second connecting structure under the driving of the driving mechanism and keep them in the locking position. In the above structure, the driving mechanism can drive the locking structure to connect the first connecting structure and the second connecting structure and keep them in the locking position, so that the battery device is kept and locked in the bracket of the storage body, and the driving mechanism can drive the locking structure to switch between the locking position and the unlocking position, so as to realize the locking and unlocking of the battery device on the bracket, so that the battery device in the energy storage device can be conveniently disassembled and assembled, and the maintenance and replacement of the battery device are convenient.

[0056] The energy storage device described in the embodiments of the application can be an energy storage container or an energy storage cabinet, and the energy storage device described in the embodiments of the application can be applied to an energy storage system, which can comprise one or more energy storage devices and a power conversion device (PCS), and the power conversion device is used to be connected between a power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power conversion device. As an example, the power generation device can be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc.

[0057] Some embodiments of the application provide an energy storage device, as shown in Figure 1 、 Figure 2 and Figure 3 , the energy storage device 10 comprises a battery device 1, a storage body 2 and a locking device 3, referring to Figure 4 and Figure 5, the battery device 1 is provided with a first connecting structure 11; the battery device 1 is contained in a storage body 2, the storage body 2 comprises a bracket 21, the battery device 1 is placed in the bracket 21, the bracket 21 is provided with a second connecting structure 2111; the locking device 3 comprises a locking structure 31 and a driving mechanism (not shown in the figure), the locking structure 31 is drivingly connected to the driving mechanism, the locking structure 31 is movably connected to the bracket 21, the locking structure 31 has an unlocking position and a locking position; the locking structure 31 is configured to connect and keep the first connecting structure 11 and the second connecting structure 2111 in the locking position under the driving of the driving mechanism. In the above structure, the driving mechanism can drive the locking structure 31 to connect the first connecting structure 11 and the second connecting structure 2111 and keep them in the locking position, so that the battery device 1 is kept locked on the bracket 21 of the storage body 2, and the driving mechanism can drive the locking structure 31 to switch between the locking position and the unlocking position, realizing the locking and unlocking of the battery device 1 on the bracket 21, so that the battery device 1 in the energy storage device 10 can be conveniently disassembled, and the maintenance and replacement of the battery device 1 are convenient.

[0058] The battery device 1 is a device for storing electrical energy in the energy storage device 10, and a plurality of battery devices 1 are provided in the storage body 2. The plurality of battery devices 1 can be connected in series, in parallel, or in series-parallel connection to output electrical energy to the outside or store electrical energy.

[0059] The battery device 1 can include a box body and a plurality of battery monomers, the plurality of battery monomers are contained in the box body and arranged in layers, and the plurality of battery monomers are connected in series, in parallel, or in series-parallel connection through a busbar component to form a battery monomer assembly.

[0060] The first connecting structure 11 can be a structure provided on the box body of the battery device 1, which is used to connect the battery device 1 to the storage body 2 of the energy storage device 10. Exemplarily, the first connecting structure 11 can be a hole-shaped structure, a groove-shaped structure or a seat structure capable of cooperating with the locking structure 31 and the second connecting structure 2111, and those skilled in the art can set the specific structure form of the first connecting structure 11 according to the actual situation to relatively fix the first connecting structure 11 and the second connecting structure 2111.

[0061] The storage body 2 can be a structure for forming a containing cavity for containing the battery device 1, and the storage body 2 surrounds to form the containing cavity, and the battery device 1 is located in the containing cavity, so that the battery device 1 can be separated from the external environment by the storage body 2, reducing the possibility of the battery device 1 being affected by the external environment, and being beneficial to the reliable operation of the battery device 1.

[0062] The bracket 21 can be a rack structure for supporting and carrying the battery device 1, which is connected to the wall body of the storage body 2, so that the load of the battery device 1 can be transmitted to the wall body of the storage body 2.

[0063] The second connecting structure 2111 can be a structure arranged on the bracket 21, which is used to connect with the first connecting structure 11 of the battery device 1, so that the battery device 1 can be connected on the bracket 21, and the relative fixation of the battery device 1 and the cartridge body 2 is realized. Exemplarily, the second connecting structure 2111 can be a hole structure, a groove structure or a seat structure which can cooperate with the locking structure 31 and the first connecting structure 11, and the specific structure form of the second connecting structure 2111 can be arranged by those skilled in the art according to the actual situation to connect the second connecting structure 2111 with the first connecting structure 11.

[0064] The locking device 3 can be a device capable of locking or unlocking the first connecting structure 11 and the second connecting structure 2111. The locking device 3 fixes the battery device 1 on the bracket 21 by locking the first connecting structure 11 and the second connecting structure 2111, which reduces the possibility of the battery device 1 colliding with the cartridge body 2 or other devices in the energy storage device 10. The locking device 3 can remove the battery device 1 from the bracket 21 by unlocking the first connecting structure 11 and the second connecting structure 2111, so that the battery device 1 can be conveniently removed, which is conducive to improving the convenience of replacing and repairing the battery device 1.

[0065] The locking structure 31 can be a structure in the locking device 3 for connecting the first connecting structure 11 and the second connecting structure 2111. The locking structure 31 connects the first connecting structure 11 and the second connecting structure 2111, so that the battery device 1 is locked on the bracket 21, and the fixation of the battery device 1 in the energy storage device 10 is realized.

[0066] The driving mechanism can be a mechanism in the locking device 3 for driving the locking structure 31 to move. The locking structure 31 is movably connected to the bracket 21 and is connected to the driving mechanism by transmission, so that the driving mechanism can drive the locking structure 31 to move in order to switch between the unlocking position and the locking position.

[0067] The unlocking position and the locking position are two different positions of the locking structure 31, wherein, in the state that the locking structure 31 is located in the locking position, the locking structure 31 connects the first connecting structure 11 and the second connecting structure 2111, and realizes the locking fixation of the battery device 1 on the bracket 21; in the state that the locking structure 31 is located in the unlocking position, the locking structure 31 releases the connection of the first connecting structure 11 and the second connecting structure 2111, and the battery device 1 can be removed from the bracket 21.

[0068] The locking structure 31 is configured to connect and keep the first connecting structure 11 and the second connecting structure 2111 in the locking position under the driving of the driving mechanism, which means that the driving mechanism can drive the locking structure 31 to move to connect the first connecting structure 11 and the second connecting structure 2111, and can keep the locking structure 31 in the locking position to keep the battery device 1 locked on the bracket 21.

[0069] For example, the driving of the locking structure 31 by the driving mechanism can be manual operation of the driving mechanism to drive the locking structure 31, so that the driving mechanism does not have to consume additional energy, so that the locking device 3 does not have to be additionally provided with a power supply, which is conducive to reducing the occupation of the space of the energy storage device 10, and does not need to take power from the locking device 3, which is conducive to improving the equalization of the state of charge of each battery device 1.

[0070] In the above structure, the driving mechanism can drive the locking structure 31 to connect the first connecting structure 11 and the second connecting structure 2111 and keep them in the locking position, so that the battery device 1 is kept locked on the bracket 21 of the bin body 2, and the driving mechanism can drive the locking structure 31 to switch between the locking position and the unlocking position, realizing the locking and unlocking of the battery device 1 on the bracket 21, so that the battery device 1 in the energy storage device 10 can be conveniently disassembled and assembled, and the maintenance and replacement of the battery device 1 are convenient.

[0071] In some embodiments, the driving mechanism includes an operating structure 321 and a transmission assembly (not shown in the figure) connected to each other, and the operating structure 321 is configured to drive the locking structure 31 to switch between the unlocking position and the locking position through the transmission assembly.

[0072] The operating structure 321 can be a structure manually operated on the driving mechanism, which is used for a person to operate on the driving mechanism, so that the driving mechanism can drive the locking structure 31 to move under manual operation to switch between the unlocking position and the locking position.

[0073] The transmission assembly can be an assembly connecting the locking structure 31 and the operating structure 321, which is used for power transmission, so that the force exerted by a person on the operating structure 321 can be transmitted to the locking structure 31 through the transmission assembly to drive the locking structure 31 to move.

[0074] The operating structure 321 is configured to drive the locking structure 31 to switch between the unlocking position and the locking position through the transmission assembly, so that under the operation of the operating structure 321 by a person, the operating structure 321 can drive the locking structure 31 to switch back and forth between the unlocking position and the locking position through the transmission assembly, conveniently realizing the locking and unlocking of the battery device 1 on the bracket 21.

[0075] In some embodiments, with reference toFigure 2 and Figure 4 The transmission assembly comprises a rotating link 322 rotatably connected to the bracket 21, and the operating structure 321 comprises a rotating handle and the locking structure 31, both of which are connected to the rotating link 322.

[0076] The rotating link 322 can be a rod-shaped structure capable of rotation, which is rotatably connected to the bracket 21 so that the rotating link 322 can rotate on the bracket 21.

[0077] The rotating handle can be a handle used to drive the rotating link 322 to rotate manually. By connecting the rotating handle and the locking structure 31 to the rotating link 322, manual operation of the rotating handle can drive the locking structure 31 to rotate, so that the locking structure 31 switches between the unlocked position and the locked position.

[0078] In some embodiments, the transmission assembly further comprises a positioning member and a positioning structure 323, the positioning structure 323 is sleeved on the rotating link 322, the positioning structure 323 is provided with a positioning hole 3231 penetrating in the axial direction of the rotating link 322, the bracket 21 is provided with a first hole 2121 and a second hole 2122 penetrating in the axial direction of the rotating link 322, and the positioning member is inserted into the first hole 2121 or the second hole 2122 through the positioning hole 3231 to keep the locking structure 31 in the locked position or the unlocked position.

[0079] The positioning member and the positioning structure 323 can be components used to position the locking structure 31. By sleeving the positioning structure 323 on the rotating link 322, the positioning structure 323 can rotate synchronously with the rotating link 322. The positioning hole 3231 can be a hole-shaped structure provided on the positioning structure 323, which penetrates the positioning structure 323 in the axial direction of the rotating link 322, so that the positioning member can be inserted into the positioning hole 3231.

[0080] The first hole 2121 and the second hole 2122 can be two hole-shaped structures provided on the bracket 21. Both the first hole 2121 and the second hole 2122 penetrate the bracket 21 in the axial direction of the rotating link 322, so that when the positioning member is inserted into the positioning hole 3231, it can be conveniently inserted into any one of the first hole 2121 and the second hole 2122 to fix the positioning structure 323 and the bracket 21 relative to each other.

[0081] The positioning member passes through the positioning hole 3231 and is inserted into the first hole 2121 to keep the locking structure 31 in the locking position. In other words, in the state that the positioning member passes through the positioning hole 3231 and is inserted into the first hole 2121, the locking structure 31 is kept in the locking position by the rotary connecting rod 322, so that the locking structure 31 keeps connecting the first connecting structure 11 and the second connecting structure 2111.

[0082] The positioning member passes through the positioning hole 3231 and is inserted into the second hole 2122 to keep the locking structure 31 in the unlocking position. In other words, in the state that the positioning member passes through the positioning hole 3231 and is inserted into the second hole 2122, the locking structure 31 is kept in the unlocking position by the rotary connecting rod 322, so that the locking structure 31 keeps disconnecting the first connecting structure 11 and the second connecting structure 2111.

[0083] Exemplarily, the positioning member can be a bolt or a connecting screw, and a person skilled in the art can select the type of the positioning member according to the actual situation.

[0084] In some embodiments, the bracket 21 includes a supporting plate 211 and a support 212. The battery device 1 is placed on the supporting plate 211, the support 212 is located on the side of the supporting plate 211 away from the battery device 1 and is connected with the supporting plate 211, and the rotary connecting rod 322 is rotatably connected with the support 212.

[0085] The supporting plate 211 and the support 212 are two parts connected with each other in the bracket 21. The supporting plate 211 is a plate structure, which is used to provide a platform for placing the battery device 1; and the support 212 is a frame structure, which is used to improve the structural strength of the bracket 21 so as to improve the weight of the battery device 1 that can be carried by the supporting plate 211.

[0086] By locating the support 212 on the side of the supporting plate 211 away from the battery device 1 and connecting the support 212 with the supporting plate 211, the support 212 can enhance the structural strength of the bracket 21 while reducing the possibility of interference with the battery device 1, so that the battery device 1 can be smoothly placed and removed on the supporting plate 211.

[0087] By rotatably connecting the rotary connecting rod 322 with the support 212, the rotary connecting rod 322 is located on the side of the supporting plate 211 away from the battery device 1 and is rotatably connected with the bracket 21, which reduces the possibility of interference between the rotary connecting rod 322 and the battery device 1.

[0088] In some embodiments, the bracket 212 is provided with an avoiding gap 2123, which penetrates the bracket 212 along the thickness of the bracket 212 and communicates with the end face of the bracket 212 away from the support plate 211, and the avoiding gap 2123 is arranged opposite to the locking structure 31 along the rotating direction of the rotating link 322; at least part of the locking structure 31 is located in the avoiding gap 2123 when the locking structure 31 is in the unlocking position.

[0089] The avoiding gap 2123 can be a gap provided on the bracket 212, which is used to avoid the locking structure 31, so as to reduce the possibility of interference between the locking structure 31 and the bracket 212 during movement.

[0090] The avoiding gap 2123 penetrates the bracket 212 along the thickness of the bracket 212 and communicates with the end face of the bracket 212 away from the support plate 211, so that the locking structure 31 can enter the avoiding gap 2123 from the side of the bracket 212 away from the support plate 211 during movement, so that the avoiding gap 2123 can accommodate the locking structure 31 to avoid the locking structure 31. By arranging the avoiding gap 2123 opposite to the locking structure 31 along the rotating direction of the rotating link 322, when the locking structure 31 rotates with the rotating link 322, the locking structure 31 can enter the avoiding gap 2123 without interfering with the bracket 212.

[0091] When the locking structure 31 is in the unlocking position, at least part of the locking structure 31 is located in the avoiding gap 2123, which can mean that at least part of the locking structure 31 is located in the avoiding gap 2123 when the locking structure 31 rotates with the rotating link 322 to the unlocking position, so that the bracket 212 avoids the locking structure 31 through the avoiding gap 2123.

[0092] In some embodiments, referring to Figure 5 and Figure 6 , the operating structure 321 includes a pushing structure 3211 and a first elastic member 3212, the first elastic member 3212 is located on the side of the bracket 21 away from the battery device 1, the locking structure 31 is connected to the bracket 21 through the first elastic member 3212, and the pushing structure 3211 is drivingly connected to the locking structure 31; under the elastic force of the first elastic member 3212, the locking structure 31 connects and maintains the first connecting structure 11 and the second connecting structure 2111 in the locking position; the pushing structure 3211 is configured to be able to push the locking structure 31 to switch from the locking position to the unlocking position.

[0093] The pushing structure 3211 and the first elastic member 3212 are both structures for applying force to the locking structure 31. Among them, the first elastic member 3212 applies force to the locking structure 31 through its own elastic force, and the pushing structure 3211 applies a pushing force to the locking structure 31 through manual operation.

[0094] By setting the first elastic member 3212 on the side of the bracket 21 away from the battery device 1 and connecting the locking structure 31 to the bracket 21 through the first elastic member 3212, not only the locking structure 31 is connected to the bracket 21, but also the first elastic member 3212 can apply force to the locking structure 31 from the side of the bracket 21 away from the battery device 1 by using its elastic force.

[0095] By drivingly connecting the pushing structure 3211 to the locking structure 31, the operator can apply force to the locking structure 31 through the pushing structure 3211.

[0096] Under the action of the elastic restoring force of the first elastic member 3212, the first elastic member 3212 pushes the locking structure 31 from the side of the bracket 21 away from the battery device 1, so that the locking structure 31 connects the first connecting structure 11 and the second connecting structure 2111 and keeps them in the locked position, so that the battery device 1 and the bracket 21 are kept locked and fixed.

[0097] Under the action of the operator, the pushing structure 3211 pushes the locking structure 31 to move from the locked position to the unlocked position, and releases the connection between the first connecting structure 11 and the second connecting structure 2111.

[0098] In some embodiments, the transmission assembly includes a transmission baffle 324 and a limiting mechanism 325 with a limiting block 3251, the limiting block 3251 is located on the side of the bracket 21 away from the battery device 1, and at least part of the limiting block 3251 is arranged opposite to the bracket 21 along the arrangement direction of the bracket 21 and the battery device 1, the transmission baffle 324 is located on the side of the bracket 21 away from the battery device 1, and the transmission baffle 324 connects the locking structure 31 and the pushing structure 3211; in the state that the locking structure 31 is in the locked position, the first elastic member 3212 abuts the transmission baffle 324 against the surface of the bracket 21 away from the battery device 1; in the state that the locking structure 31 is in the unlocked position, the limiting block 3251 blocks the transmission baffle 324 on the side of the limiting block 3251 away from the bracket 21.

[0099] The transmission baffle 324 can be a plate structure for transmitting force. The transmission baffle 324 is arranged on the side of the bracket 21 away from the battery device 1, and is used for transmitting force between the locking structure 31 and the pushing structure 3211. The transmission baffle 324 connects the locking structure 31 and the pushing structure 3211, which means that the locking structure 31 and the pushing structure 3211 are both connected to the transmission baffle 324. By connecting the locking structure 31 and the pushing structure 3211, the transmission baffle 324 can transmit the force received by the pushing structure 3211 to the locking structure 31, so that the locking structure 31 can be smoothly driven by the pushing structure 3211.

[0100] The limiting mechanism 325 can be a mechanism for limiting the transmission baffle 324. The limiting mechanism 325 limits the transmission baffle 324, so that the locking structure 31 connected with the transmission baffle 324 is also limited by the limiting mechanism 325.

[0101] The limiting block 3251 is a block structure in the limiting mechanism 325 for blocking the transmission baffle 324. By arranging the limiting block 3251 on the side of the bracket 21 away from the battery device 1, and at least partially spacing the limiting block 3251 along the arrangement direction of the bracket 21 and the battery device 1 opposite to the bracket 21, the limiting block 3251 can block the transmission baffle 324 from approaching the bracket 21.

[0102] Through the above structure, the first elastic member 3212 can push the transmission baffle 324 away from the side of the bracket 21 under the action of its own elastic force, and abut the transmission baffle 324 against the surface of the bracket 21 away from the battery device 1, and the locking structure 31 connected with the transmission baffle 324 is in the locking position to connect the first connecting structure 11 and the second connecting structure 2111. When the operator applies force to the pushing structure 3211, the pushing structure 3211 moves away from the bracket 21, and the transmission baffle 324 connected with the pushing structure 3211 moves to the side of the limiting block 3251 away from the bracket 21. At this time, the limiting block 3251 blocks the transmission baffle 324 on the side of the limiting block 3251 away from the bracket 21, and the transmission baffle 324 drives the locking structure 31 to switch to the unlocking position, and the locking structure 31 releases the connection between the first connecting structure 11 and the second connecting structure 2111.

[0103] In some embodiments, the limiting block 3251 is provided with a guide surface 32511 and an abutting surface 32512. The guide surface 32511 has a component in the direction of the bracket 21 and is at an acute angle to the arrangement direction of the bracket 21 and the battery device 1, and the abutting surface 32512 is used to abut the transmission baffle 324.

[0104] The guide surface 32511 can be a structure for smoothly sliding the transmission baffle 324 through the limiting block 3251 to move to the side of the limiting block 3251 away from the bracket 21. By arranging the guide surface 32511 to have a component in the direction of the bracket 21 and be at an acute angle to the arrangement direction of the bracket 21 and the battery device 1, the transmission baffle 324 can smoothly slide through the limiting block 3251 during the process of moving away from the bracket 21 to move to the side of the limiting block 3251 away from the bracket 21.

[0105] The abutting surface 32512 can be a surface on the limiting block 3251 for abutting the transmission baffle 324. By abutting the transmission baffle 324 with the abutting surface 32512, the transmission baffle 324 can be blocked on the side of the limiting block 3251 away from the bracket 21.

[0106] For example, the abutment surface 32512 is configured to be perpendicular to the arrangement direction of the bracket 21 and the battery device 1, so that the abutment surface 32512 can stably abut against the transmission baffle 324.

[0107] In some embodiments, the guide mechanism further includes a pull rod 3252 and a second elastic element 3253. The second elastic element 3253 is connected to the limiting block 3251 and the bracket 21. The limiting block 3251 is slidably connected to the bracket 21 along a first direction X via the pull rod 3252. The first direction X is perpendicular to the arrangement direction of the bracket 21 and the battery device 1. Under the action of the elastic force of the second elastic element 3253, at least a portion of the limiting block 3251 extends between the bracket 21 and the transmission baffle 324. The pull rod 3252 is configured to drive the limiting block 3251 out of the bracket 21 and the transmission baffle 324.

[0108] The pull rod 3252 can be an operating rod used to release the obstruction of the limit block 3251 on the transmission baffle 324. The pull rod 3252 can be operated manually by an operator.

[0109] The first direction X can be a direction perpendicular to the arrangement direction of the bracket 21 and the battery device 1. The limiting block 3251 is slidably connected to the bracket 21 along the first direction X by the pull rod 3252, so that the operator can move the limiting block 3251 relative to the bracket 21 along the first direction X by operating the pull rod 3252.

[0110] The second elastic element 3253 is connected to the limiting block 3251 and the bracket 21, so that under the action of the elastic force of the second elastic element 3253, at least part of the limiting block 3251 can extend between the bracket 21 and the transmission baffle 324, so that the transmission baffle 324 is blocked by the limiting block 3251 on the side away from the bracket 21, so that the locking structure 31 is in the unlocked position.

[0111] For example, the bracket 21 extends to form a mounting block 213 with a mounting hole, the pull rod 3252 is slidably connected to the mounting hole, and the second elastic element 3253 is connected to the limiting block 3251 and the mounting block at both ends in the extension direction, respectively.

[0112] The operator manually operates the lever 3252, which causes the lever 3252 to drive the limit block 3251 to disengage from the bracket 21 and the transmission baffle 324, so that the first elastic element 3212 drives the locking structure 31 to the locked position.

[0113] For example, both the first elastic element 3212 and the second elastic element 3253 are springs, which helps to reduce the cost of the locking device 3. In some embodiments, both the first elastic element 3212 and the second elastic element 3253 are sleeved on the outer periphery of the guide rod, so that the extension and compression of the first elastic element 3212 and the second elastic element 3253 can be guided by the guide rod.

[0114] In some embodiments, the locking structure 31 includes a pin, the first connecting structure 11 includes a insertion hole, and the second connecting structure 2111 includes a through hole. Along the arrangement direction of the bracket 21 and the battery device 1, the through hole passes through the bracket 21 and communicates with the insertion hole. Under the drive of the driving mechanism, the pin passes through the through hole and inserts into the insertion hole and remains in the locked position, or the pin switches from the locked position to the unlocked position.

[0115] By having the through hole of the second connecting structure 2111 pass through the bracket 21 along the arrangement direction of the bracket 21 and the battery device 1 and communicate with the insertion hole, the pin can pass through the through hole and be inserted into the insertion hole, so that the first connecting structure 11 and the second connecting structure 2111 are connected by the pin.

[0116] The locking structure 31 is configured to include a pin, the first connecting structure 11 is configured to include a insertion hole, and the second connecting structure 2111 is configured to include a through hole. This allows the pin to easily pass through the through hole to reach the locking position under the drive of the driving mechanism, and to be inserted into the insertion hole, thus connecting the first connecting structure 11 and the second connecting structure 2111. It also allows the pin to easily disengage from the insertion hole under the drive of the driving mechanism, thus releasing the connection between the first connecting structure 11 and the second connecting structure 2111. This improves the ease of connecting and disconnecting the first connecting structure 11 and the second connecting structure 2111.

[0117] Some embodiments of this application also provide an energy storage system, see reference. Figure 7 The energy storage system includes a power conversion device 20 and one or more energy storage devices 10 provided by the above-described technical solutions. The power conversion device 20 is used to electrically connect the power generation device 30 and one or more energy storage devices 10.

[0118] The power conversion device 20 electrically connects the power generation device 30 and the energy storage device 10, so that the electrical energy generated by the power generation device 30 can be stored in the energy storage device 10 through the power conversion device 20. As an example, the power generation equipment can specifically be a solar panel, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc.

[0119] For example, multiple energy storage devices 10 provided by the above technical solutions can be connected in parallel, so that the electrical energy generated by the power generation device 30 can be synchronously stored in multiple energy storage devices 10 through the power conversion device 20.

[0120] Some embodiments of this application provide an energy storage device 10, which includes a battery device 1, a housing 2, and a locking device 3. The battery device 1 is provided with a first connecting structure 11. The housing 2 accommodates the battery device 1 and includes a bracket 21. The battery device 1 is placed on the bracket 21, and the bracket 21 is provided with a second connecting structure 2111. The locking device 3 includes a locking structure 31 and a driving mechanism. The locking structure 31 is throttlely connected to the driving mechanism and movably connected to the bracket 21. The locking structure 31 has an unlocked position and a locked position. The first connecting structure 11 includes a insertion hole, and the second connecting structure 2111 includes a through hole. Along the arrangement direction of the bracket 21 and the battery device 1, the through hole passes through the bracket 21 and communicates with the insertion hole. Under the drive of the driving mechanism, a pin passes through the through hole and inserts into the insertion hole and remains in the locked position, or the pin switches from the locked position to the unlocked position.

[0121] In the above structure, the driving mechanism can drive the locking structure 31 to connect the first connecting structure 11 and the second connecting structure 2111 and keep them in the locked position, so that the battery device 1 is locked on the bracket 21 of the compartment 2. The driving mechanism can also drive the locking structure 31 to switch between the locked position and the unlocked position, so as to lock and unlock the battery device 1 on the bracket 21. This makes it easy to disassemble and assemble the battery device 1 in the energy storage device 10, and makes it convenient to inspect and replace the battery device 1.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, include: The battery device is provided with a first connection structure; A compartment for accommodating the battery device, the compartment including a bracket, the battery device being placed on the bracket, and the bracket being provided with a second connecting structure; A locking device includes a locking structure and a driving mechanism. The locking structure is throttledly connected to the driving mechanism and movably connected to the bracket. The locking structure has an unlocked position and a locked position. The locking structure is configured to connect the first connecting structure and the second connecting structure and hold them in the locking position under the drive of the driving mechanism; The locking structure includes a pin, the first connecting structure includes a insertion hole, and the second connecting structure includes a through hole. Along the arrangement direction of the bracket and the battery device, the through hole passes through the bracket and communicates with the insertion hole. Under the drive of the driving mechanism, the pin passes through the through hole and inserts into the insertion hole and remains in the locked position, or the pin switches from the locked position to the unlocked position.

2. The energy storage device according to claim 1, characterized in that, The driving mechanism includes an operating structure and a transmission component connected to each other. The operating structure is configured to drive the locking structure to switch between the unlocked position and the locked position via the transmission component.

3. The energy storage device according to claim 2, characterized in that, The transmission assembly includes a rotating link rotatably connected to the bracket, and the operating structure includes a rotating handle, both of which are connected to the rotating link.

4. The energy storage device according to claim 3, characterized in that, The transmission assembly further includes a positioning element and a positioning structure. The positioning structure is sleeved on the rotating connecting rod and has a positioning hole that extends through the axial direction of the rotating connecting rod. The bracket has a first hole and a second hole that extend through the axial direction of the rotating connecting rod. The positioning element passes through the positioning hole and is inserted into the first hole to keep the locking structure in the locked position, or the positioning element passes through the positioning hole and is inserted into the second hole to keep the locking structure in the unlocked position.

5. The energy storage device according to claim 3, characterized in that, The bracket includes a tray and a support. The battery device is placed on the tray, and the support is located on the side of the tray away from the battery device and connected to the tray. The rotating link is rotatably connected to the support.

6. The energy storage device according to claim 5, characterized in that, The bracket is provided with an avoidance notch that extends through the bracket along its thickness and communicates with the end face of the bracket away from the support plate. Along the rotation direction of the rotating link, the avoidance notch is disposed opposite to the locking structure. When the locking structure is in the unlocked position, at least a portion of the locking structure is located in the avoidance notch.

7. The energy storage device according to claim 2, characterized in that, The operating structure includes a pushing structure and a first elastic element. The first elastic element is located on the side of the bracket away from the battery device. The locking structure is connected to the bracket through the first elastic element, and the pushing structure is throttlely connected to the locking structure. Under the elastic force of the first elastic element, the locking structure connects the first connecting structure and the second connecting structure and holds them in the locked position. The pushing structure is configured to push the locking structure to switch from the locked position to the unlocked position.

8. The energy storage device according to claim 7, characterized in that, The transmission assembly includes a transmission baffle and a limiting mechanism with a limiting block. The limiting block is located on the side of the bracket away from the battery device, and at least a portion of the limiting block is disposed opposite to the bracket along the arrangement direction of the bracket and the battery device. The transmission baffle is located on the side of the bracket away from the battery device, and the transmission baffle connects the locking structure and the pushing structure. When the locking structure is in the locked position, the first elastic member abuts the transmission baffle against the surface of the bracket away from the battery device. When the locking structure is in the unlocked position, the limiting block blocks the transmission baffle on the side of the limiting block away from the bracket.

9. The energy storage device according to claim 8, characterized in that, The limiting block is provided with a guide surface and a supporting surface. The guide surface is oriented with a component toward the bracket and forms an acute angle with the arrangement direction of the bracket and the battery device. The supporting surface is used to support the transmission baffle.

10. The energy storage device according to claim 8, characterized in that, The limiting mechanism further includes a pull rod and a second elastic element. The second elastic element is connected to the limiting block and the bracket. The limiting block is slidably connected to the bracket along a first direction via the pull rod. The first direction is perpendicular to the arrangement direction of the bracket and the battery device. Under the action of the elastic force of the second elastic element, at least a portion of the limiting block extends between the bracket and the transmission baffle. The pull rod is configured to drive the limiting block to disengage from between the bracket and the transmission baffle.

11. An energy storage system, characterized in that, include: Power conversion device; One or more energy storage devices as described in any one of claims 1 to 10, wherein the power conversion device is used to electrically connect a power generation device and one or more of the energy storage devices.

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