Movable direct-current energy storage device

By designing a mobile DC energy storage device with adjustable box set and a tray, the problems of unstable installation and inconvenient movement of the battery pack in the prior art are solved, and stable installation and flexible adjustment of different models of battery packs are achieved, which enhances the applicability and mobility of the device.

CN119812648AActive Publication Date: 2025-04-11SHENZHEN ZHESI LITHIUM CYCLE TECH CO LTD
View PDF 13 Cites 0 Cited by

Patent Information

Application Number
CN202411994500.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-04-11
Estimated Expiration
2044-12-31

AI Technical Summary

Technical Problem

The existing DC energy storage devices cannot adapt to the stable installation of different models of battery packs, and the battery pack is easy to shake when used in mobile, and has poor applicability.

Method used

A mobile DC energy storage device is designed, which adopts a structure that matches the main box shell and the front cover of the energy storage box, is equipped with an adjustable box set and a placing disk. The storage space and placing disk height are adjusted through the drive parts to ensure stable storage and movement of the battery pack.

Benefits of technology

It realizes stable installation and flexible adjustment of different models of battery packs, enhances the applicability and mobility of the device, and ensures the stability of the battery pack during placement and use.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119812648A_ABST
    Figure CN119812648A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of direct-current energy storage devices, in particular to a movable direct-current energy storage device which comprises an energy storage box, the energy storage box comprises a main box shell and a front cover, the front cover is installed on the front end face of the main box shell, one side of the front cover is rotationally connected with the main box shell, and an adjustable box set is installed on the rear end face of the main box shell; the adjustable box set is connected with the main box shell in a front-back sliding mode, a first driving part for adjusting the front-back position is further installed on the adjustable box set, a plurality of containing discs are evenly installed on the adjustable box set from top to bottom, the containing discs are longitudinally connected with the adjustable box set in a sliding mode, and second driving parts for adjusting the heights of the containing discs are further installed in the adjustable box set. The adjustable box set capable of being adjusted in a sliding mode is installed on the energy storage box, it is guaranteed that the position of the adjustable box set on the energy storage box can be adjusted through the first driving part to change the overall storage space during use, and the use requirements for placement of battery packs of different models are easily met.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of direct current energy storage devices, and in particular to a mobile direct current energy storage device. Background Art

[0002] Energy storage cabinets, also known as battery energy storage systems, are devices used to store electrical energy. They can store electrical energy when there is an excess of electricity and release it for use when needed. With the popularization and application of energy storage equipment, mobile energy storage devices have emerged.

[0003] The existing Chinese patent with announcement number CN114899527A discloses a DC energy storage device, including a box body with a battery module and a heating device arranged inside, a heat-conducting component fixedly installed on the battery module, a partition separating the battery module and the heating device fixedly installed inside the box body, an upper opening and a lower opening are penetrated through the surface of the partition, and a driving component and a shielding component corresponding to the position of the heat-conducting component are respectively arranged inside the upper opening and the lower opening.

[0004] With respect to the above-mentioned related technologies, it is found that most existing DC energy storage devices directly place the battery pack in a cabinet when in use. In this way, a specific cabinet can only hold battery packs of a specific size, and the battery pack is prone to shaking when it needs to be moved. The applicability is poor and it is not easy to move and use. Summary of the invention

[0005] The present invention solves the problems in the related art and proposes a mobile DC energy storage device, which solves the problems that the existing DC energy storage device cannot adapt to stable installation of battery packs of different models and is not easy to be stably moved for use.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a mobile DC energy storage device, including an energy storage box, the energy storage box including a main box shell and a front cover, the front cover is installed on the front end surface of the main box shell, and one side of the front cover is rotatably connected to the main box shell, and an adjustable box group is installed on the rear end surface of the main box shell, the adjustable box group is connected to the main box shell in a front-to-rear sliding manner, and a driving member 1 for adjusting the front and rear position is also installed on the adjustable box group, the adjustable box group is evenly installed with a plurality of groups of placement disks from top to bottom, the placement disks are longitudinally slidably connected to the adjustable box group, and a driving member 2 for adjusting the height of the placement disks is also installed in the adjustable box group, and an equipment box is installed on the inner side of the bottom surface of the main box shell, and the equipment box is fixedly connected to the main box shell.

[0007] By adopting the above technical solution, the energy storage box is designed to be a structure in which a main box shell and a front cover cooperate. When it is easy to use, the front cover can be used to shield the front end of the main box shell, and when it is convenient to use, the front cover can be flipped open to facilitate stable storage operations of the battery pack. By installing an adjustable box group on the rear end face of the main box shell, it is ensured that the adjustable box group cooperates with the main box shell as a storage space, and when in use, the position of the adjustable box group on the main box shell can be adjusted by a driving member, so that the storage space can be flexibly adjusted according to the energy storage needs, which is easy to meet different usage needs. Several groups of placement trays are installed from top to bottom in the box group to ensure that the battery pack can be stably placed through several layers of placement trays when in use, and the setting of the driving component 2 ensures that the height of each placement tray can be adjusted individually, so that the distance between the placement trays can be flexibly adjusted, which can not only meet the needs of placing battery packs of different models, but also ensure that the battery packs after placement can be limited and clamped, so that the battery packs are placed more stably. By installing a device box on the inner side of the bottom surface of the main box shell, the electronic control components of the equipment are installed through the device box, and the corresponding connection structure is installed to realize power supply to external equipment.

[0008] As a preferred embodiment, the main box shell includes a square shell, a moving wheel group, a device handle and an operating rod, the moving wheel group is evenly arranged at the four corners of the lower end surface of the square shell, the device handle and the operating rod are fixedly installed on both sides of the upper end surface of the square shell, and heat dissipation holes are also provided on both sides of the square shell, and the heat dissipation holes are fixedly connected to the square shell. The front cover includes a cover part, a display screen and a bottom cover for shielding the device box, one side of the cover part is rotatably installed on the front end surface of the square shell, the display screen is fixedly installed on the outer side surface of the cover part, the bottom cover is installed on the lower end surface of the cover part, and the bottom cover is rotatably connected to the cover part, and a magnetic block that engages with the cover part is also installed on the inner side surface of the bottom cover.

[0009] By adopting the above technical scheme, by designing the main box shell into a square shell structure, the adjustable box group can be stably installed through the main box shell when it is convenient to use, and by fixing the moving wheel group at the lower end of the square shell, it is ensured that the equipment can be flexibly moved when in use, and at the same time, by setting the equipment handle, it is ensured that the operator can better drag the equipment to move, and by setting the operating lever, the equipment can be controlled and used, and by arranging heat dissipation holes on both sides of the square shell, it is convenient to better dissipate heat during the use of the equipment, and by designing the front cover into a structure that matches the cover plate part, the display screen and the bottom cover, the front end of the square shell can be shielded by the cover plate part when in use, and at the same time, the display screen is set to facilitate the display of equipment information, and the bottom cover is set to ensure that it can be flipped open when in use, and it is ensured that it can be flexibly opened during maintenance or connection, so that the operator can better operate the equipment box when the front cover is not opened, and by installing a magnetic suction block on the inner side of the bottom cover, the cover plate part can be stably attracted and fixed.

[0010] As a preferred embodiment, the adjustable box group includes a back plate, a front frame shell, and a middle plate seat for mounting a placement plate and a second driving member, the front frame shell is fixedly mounted on the front end surface of the back plate, and the front frame shell is plugged into the square shell, the front frame shell is slidably connected to the square shell, the middle plate seat is mounted in the middle of the front frame shell, and the head and both sides of the middle plate seat are fixedly connected to the front frame shell, the middle part of the placement plate is slidably mounted on the middle plate seat, and both sides of the placement plate are fitted on the inner side surface of the front frame shell, and the second driving member is vertically fixed in the middle plate seat.

[0011] By adopting the above technical solution, the adjustable box group is designed into a structure in which a back panel, a front frame shell and a middle panel seat cooperate with each other. When it is convenient to use, the back panel can be stably inserted into the square outer shell through the front frame shell, so that the storage space can be adjusted by sliding during use. By fixing the middle panel seat in the middle of the front frame shell, it is convenient to install the placement plate and the driving component 2 through the middle panel seat. When it is convenient to use, the placement plate can be driven by the driving component 2 to flexibly adjust the height on the middle panel seat.

[0012] As a preferred embodiment, the front frame shell includes a concave middle shell and an L-shaped baffle, the concave middle shell and the L-shaped baffle are both fixedly mounted on the front end surface of the back plate, the L-shaped baffle is symmetrically mounted on both sides of the concave middle shell, and the head of the L-shaped baffle is fixedly connected to the concave middle shell, and a number of positioning holes are evenly opened on the concave middle shell.

[0013] By adopting the above technical solution, by designing the front frame shell into a structure in which a concave middle shell and an L-shaped baffle cooperate, the L-shaped baffles at both ends can be connected to each other through the concave middle shell when it is easy to use. In this way, it can be ensured that the concave middle shell and the two groups of L-shaped baffles form a connection structure that cooperates with the square outer shell, and the setting of the concave middle shell can ensure the positioning and installation of the driving member 1. At the same time, by evenly opening a number of positioning holes on the concave middle shell, it is convenient for the driving member 1 to pass through and connect with the placement plate.

[0014] As a preferred solution, the middle plate seat includes a vertical plate frame, an angle plate and a horizontal plate. The vertical plate frame is fixedly installed on the lower end surface of the concave middle shell, and a number of longitudinal sliding grooves connected to the positioning holes are evenly opened on the vertical plate frame. The angle plate is arranged on the lower end surface of the vertical plate frame, and the angle plate and the vertical plate frame are integrally formed. The horizontal plate is installed between the angle plate and the L-shaped baffle plate, and the two ends of the horizontal plate are respectively fixedly connected to the angle plate and the L-shaped baffle plate.

[0015] By adopting the above technical scheme, by designing the middle plate seat into a structure that cooperates with the vertical plate frame, the angle plate and the horizontal plate, the placement plate can be installed through the longitudinal slide groove on the vertical plate frame when it is easy to use, and the placement plate can be adjusted by sliding along the longitudinal slide groove when it is convenient to use. By arranging the angle plate at the lower end of the vertical plate frame, the positioning installation can be ensured by the angle plate when it is convenient to install. At the same time, by arranging horizontal plates on both sides of the angle plate, it is convenient to connect the angle plate and the L-shaped baffle with each other through the horizontal plates, thereby increasing the stability of the vertical plate frame.

[0016] As a preferred embodiment, the driving member 1 includes a motor 1 and a positioning screw, the motor 1 is fixedly mounted on the rear end face of the back plate, the positioning screw is arranged in the angle plate, and the positioning screw is rotatably connected to the back plate, the rear end of the positioning screw is connected to the output end of the motor 1, and the upper end face of the equipment box is provided with a triangular shell that slidably cooperates with the angle plate, the triangular shell is fixedly connected to the equipment box, and two groups of guide clamps are symmetrically installed on the inner side face of the triangular shell, and a threaded sleeve that cooperates with the positioning screw is arranged near the rear end of the triangular shell, and the threaded sleeve and the guide clamp are both fixedly connected to the triangular shell.

[0017] By adopting the above technical scheme, by designing the driving part 1 as a structure that cooperates with the motor 1 and the positioning screw, the motor 1 can be used to drive the positioning screw to rotate when it is easy to use, and then the positioning screw and the threaded sleeve in the triangular shell are used to drive the adjustable box group to move forward and backward stably. The triangular shell is fixedly installed on the upper end face of the equipment box, and it can be pressed on the angle plate by the triangular shell for convenient installation, and it can also be adjusted by sliding back and forth. At the same time, two groups of guide splints are symmetrically installed on the inner side surface of the triangular shell. In this way, the positioning screw is assisted in limiting by the two groups of guide splints, which ensures that the positioning screw will not slide during use, thereby increasing the stability of the equipment.

[0018] As a preferred embodiment, the placement plate includes a positioning seat, a placing plate and a positioning frame, the positioning seat includes a back plate, a top plate and a partition block, the top plate is installed on the upper end surface of the back plate, the partition block is arranged in the middle of the lower end surface of the top plate, and the back plate, the top plate and the partition block are integrally formed, the placing plate is symmetrically installed at both ends of the partition block, and the placing plate is fixedly installed on the front end surface of the back plate, the positioning frame is installed on the lower end surface of the placing plate close to the front end, and the positioning frame is fixedly connected to the placing plate.

[0019] By adopting the above technical scheme, by designing the placement plate into a structure in which the positioning seat, the placement plate and the positioning frame cooperate, the two placement plates can be fixed to each other through the positioning seat when it is easy to use, so that the battery pack can be stably placed on the placement plate for use, and by fixing the positioning frame on the lower end surface of the placement plate, it can be connected with the driving member 2 through the positioning frame when it is convenient to install, and by designing the positioning seat into a structure in which the back plate, the top plate and the dividing block cooperate, it can be connected with the placement plate through the back plate and the top plate when it is easy to use, and by arranging the dividing block in the middle to ensure that the placement plates at both ends have a certain gap, it is convenient to better cooperate and connect with the driving member.

[0020] As a preferred embodiment, the second driving member includes a suspension plate, a second motor, a longitudinal screw and a bracket. The suspension plate is fixedly installed in the concave middle shell. The second motor is evenly installed on the lower end surface of the suspension plate, and the second motor is fixedly connected to the suspension plate. The longitudinal screw passes through the positioning hole and extends into the longitudinal slide groove, and the head of the longitudinal screw is connected to the output end of the second motor. The bracket includes a lifting block, an extension support rod and a threaded tube. The lifting block is slidably installed in the longitudinal slide groove, the extension support rod is fixedly installed on both sides of the bracket, the threaded tube is fixedly installed on the lower end surface of the lifting block, and the threaded tube is threadedly connected to the longitudinal screw.

[0021] By adopting the above technical scheme, by designing the driving member 2 into a structure in which the suspension plate, the motor 2, the longitudinal screw and the bracket cooperate, when it is easy to use, several motors 2 can be suspended and installed through the suspension plate, so that the stable installation of several motors 2 can be ensured, and then the longitudinal screw is installed at the lower end of the motor 2, so that each longitudinal screw can be connected to a bracket, and a bracket is fixed to a placement plate, so that when in use, it is only necessary to adjust the height of the bracket to drive the placement plate to rise and fall synchronously, and by designing the bracket into a structure in which the lifting block, the extension support rod and the threaded tube cooperate, when it is easy to use, it can be slidably installed in the longitudinal slide groove through the lifting block, so that the lifting block can only slide up and down when in use, and then the extension support rods are fixedly installed at both ends of the lifting block, and when it is convenient to use, it can be supported on the lower end surface of the placement plate through the extension support rod, so that the placement plate can be stably lifted and lowered.

[0022] As a preferred solution, the equipment box includes a control box, a storage shell, a movable seat and a protective box, the control box is fixedly mounted on the inner side of the bottom surface of the square shell, and a removable cover is installed on the front end surface of the control box, the storage shell is fixedly mounted on the side of the control box, the movable seat is slidably mounted in the storage shell, and side shafts matching the storage shell are fixedly mounted on both sides of the movable seat, two guide strips are symmetrically mounted on the inner side surface of the storage shell, the guide strips are integrally formed with the storage shell, and a front baffle with a limited side shaft is also fixedly mounted on the front end surface of the guide strip, and the lower end surface of the protective box is fixedly mounted with the movable seat A sliding guide bar is slidably mounted on a movable seat, and a self-locking component that is mutually locked with the movable seat is mounted on the lower end face of the protective box. The socket group includes a sealing cover, a polygonal shell, a telescopic frame and a right-angle frame. The sealing cover is mounted in the protective box, and a plug-in tube and a V-shaped guide frame are fixedly mounted on the lower end face of the sealing cover. The polygonal shell is mounted on the plug-in tube. The telescopic frame is slidably mounted on both sides of the V-shaped guide frame, and a number of connecting sockets are fixedly mounted on the polygonal shell and the telescopic frame. The right-angle frame is fixedly mounted on both ends of the lower end face of the sealing cover, and the right-angle frame is slidably mounted in the protective box.

[0023] By adopting the above technical scheme, by designing the equipment box into a structure that cooperates with the control box, the storage shell, the movable seat and the protective box, the control circuit and components of the equipment can be installed through the control box when it is easy to use, and a removable cover is installed on the front face of the control box, which is convenient for quick disassembly and opening during maintenance, and by fixing the storage shell on the side of the control box, it is convenient to install the movable seat and the protective box through the storage groove, ensuring that the movable seat and the protective box can be slid into the storage groove for storage when not in use, and can be pulled out for connection when needed, and by fixing the side shaft rods on both sides of the movable seat, it is ensured that the side shaft rods at both ends can be stably installed under the guide strip when in use, so that the movable seat can be stably pulled out when needed, and the side shaft rods can be set to prevent the side shaft rods from sliding off the front end of the guide strip, and the movable seat can be flipped after the side shaft rods are pulled to the position in contact with the front baffle, ensuring better use, and by fixing the guide slide bar on the lower end face of the protective box, it can be slid and installed on the movable seat through the guide slide bar when it is convenient for installation, so that the protective box can be pulled out from the movable seat. The protective box can be pulled out from the movable seat for use, and the protective box and the movable seat can be locked with each other through the self-locking component during the pulling and pulling process, so that the user can choose the pulling size and the use is more flexible. By designing the socket group into a structure that matches the sealing cover, the polygonal shell, the telescopic frame and the right-angle frame, the protective box can be installed in the protective box through the sealing cover when it is easy to use, and the upper end of the protective box can be sealed and protected by the sealing cover when it is not in use. When it is needed, the polygonal shell at the lower end of the sealing cover can be slid up to lift it up, so that the connecting socket on the polygonal shell can be exposed, which is easy and quick to plug and use. By installing the telescopic frame at the lower end of the sealing cover, the telescopic frame can be pulled out from both sides of the sealing cover when it is needed, so that the connecting socket on the telescopic frame can be plugged in for power supply. By fixing the right-angle frame at the lower end of the sealing cover, it can be slidably installed in the protective box through two groups of right-angle frames during installation. By fixing the plug-in pipe and the V-shaped guide frame on the lower end surface of the sealing cover, the polygonal shell cover can be installed through the plug-in pipe when it is convenient to use, and the setting of the V-shaped guide frame makes it convenient for the telescopic frame to be slidably installed from both sides for use.

[0024] As a preferred solution, a middle groove for installing a self-locking assembly is provided in the middle of the lower end surface of the movable seat, and the protective box comprises a front shell and a tail shell, and the tail shell is fixedly mounted on the rear end surface of the front shell, and a vertical sliding rod is provided in the front shell for slidingly mounting the plug-in tube, the vertical sliding rod is fixedly connected to the front shell, and a paddle plate is also fixedly mounted on the lower end surface of the front shell, and the self-locking assembly comprises a lock frame, a brake plate, a supporting bevel block and a handle rod, the lock frame is fixedly mounted on the lower end surface of the front shell, the brake plate is rotatably mounted in the lock frame, the supporting bevel block is slidably mounted in the lock frame, and horizontal grooves for installing the supporting bevel block are provided on both sides of the lock frame, an auxiliary vertical plate is also fixedly mounted in the middle of the lock frame, a supporting spring of the supporting bevel block is fixedly mounted on the auxiliary vertical plate, the handle rod is slidably mounted in the middle part of the lock frame, and one end of the handle rod passes through the auxiliary vertical plate and the supporting spring and is fixedly connected to the supporting bevel block, and the other end of the handle rod is fixedly mounted with a handle ring.

[0025] By adopting the above technical scheme, a middle groove is opened in the middle part of the lower end surface of the movable seat, so that the self-locking component can be fixedly installed on the lower end surface of the protection box and can be installed in coordination with each other. By designing the protection box into a structure in which the front shell and the tail shell cooperate, the socket group can be installed through the front shell when it is easy to use, and the tail shell is used to store cables. By fixing the vertical slide bar in the front shell, the plug-in tube can be slidably installed on the vertical slide bar when it is convenient to install. By designing the self-locking component into a structure in which the lock frame, the brake plate, the support bevel block and the handle rod cooperate, the brake plate, the support bevel block and the handle rod can be installed through the lock frame when it is easy to use, ensuring that the support bevel block can move in the direction of the brake plate under the action of the support spring when not subject to external force, and then can drive the brake plate to flip and stably support on the movable seat, so as to lock the movable seat and ensure that the protection box cannot slide on the movable seat. When the protection box needs to be slid and adjusted, the operator can pull the handle rod through the handle ring, and then use the handle rod to drag the support bevel block away from the brake plate to release the lock of the brake plate on the protection box, which is very convenient to use.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application installs an adjustable box group that can be slidably adjusted on the energy storage box, thereby ensuring that when in use, the position of the adjustable box group on the energy storage box can be adjusted by driving member 1 to change the overall storage space, which is easy to meet the placement requirements of battery packs of different models; and by installing a plurality of placement plates in the adjustable box group, the height of each placement plate can be individually adjusted by driving member 2 when it is convenient to use, and when it is easy to use, the storage space can be adjusted according to actual needs, and the battery pack can be clamped and limited by the placement plate, which is very convenient to use, and the setting of the equipment box can ensure that different plug-in power supply requirements can be met when in use, and has the advantages of easy use and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional diagram of the overall structure in an embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of the decomposed structure of the overall structure in an embodiment of the present invention;

[0029] Figure 3 It is a three-dimensional diagram of the coordination of the adjustable box group, the placement plate and the driving member in the embodiment of the present invention;

[0030] Figure 4 It is a three-dimensional diagram of the main box shell, the equipment box and the triangular shell in the embodiment of the present invention;

[0031] Figure 5 yes Figure 4 A partial enlarged view of the device A shown;

[0032] Figure 6 is a three-dimensional diagram of a triangular shell in an embodiment of the present invention;

[0033] Figure 7 yes Figure 6 a rear view of the device shown;

[0034] Figure 8 is a three-dimensional diagram of a placement tray in an embodiment of the present invention;

[0035] Fig. 9 It is a three-dimensional diagram of the matching of the adjustable box group and the driving member in the embodiment of the present invention;

[0036] Fig.10 yes Fig. 9 a front view of the device shown;

[0037] Fig.11 yes Fig. 9 a side view of the device shown;

[0038] Fig.12 is a three-dimensional diagram of a second driving member in an embodiment of the present invention;

[0039] Fig.13 yes Fig.12 a front view of the device shown;

[0040] Fig.14 is a three-dimensional diagram of the device box in the embodiment of the present invention when the control box and the storage shell are not installed;

[0041] Fig.15 yes Fig.14 a bottom view of the device shown;

[0042] Fig.16 yes Fig.14 a side view of the device shown;

[0043] Fig.17 The protective box and the movable seat in the embodiment of the present invention are matched with each other. Figure 1 ;

[0044] Fig.18 The protective box and the movable seat in the embodiment of the present invention are matched with each other. Figure 2 ;

[0045] Fig.19 is a three-dimensional diagram of a socket assembly in an embodiment of the present invention;

[0046] Fig. 20 yes Fig.19 a bottom view of the device shown;

[0047] Fig.21 is a three-dimensional diagram of a self-locking assembly in an embodiment of the present invention;

[0048] Fig. 22 yes Fig.21 a bottom view of the device shown;

[0049] Fig.23 yes Fig. 22 A cross-sectional view of the device along the AA direction is shown.

[0050] In the figure: 1. energy storage box; 11. main box shell; 111. square outer shell; 112. moving wheel group; 113. equipment handle; 114. operating lever; 115. heat dissipation hole plate; 12. front cover; 121. cover plate; 122. display screen; 123. bottom cover; 2. adjustable box group; 21. back plate; 22. front frame shell; 221. concave middle shell; 222. L-shaped baffle; 223. positioning hole; 23. middle plate seat ; 231, vertical plate frame; 232, angle plate; 233, horizontal plate; 234, longitudinal slide; 3, driving member 1; 31, motor 1; 32, positioning screw; 4, placing plate; 41, positioning seat; 411, backing plate; 412, top plate; 413, partition block; 42, placing plate; 43, positioning frame; 5, driving member 2; 51, suspension plate; 52, motor 2; 53, longitudinal screw; 54, bracket; 54 1. Lifting block; 542. Extension support rod; 543. Threaded pipe; 6. Equipment box; 61. Control box; 611. Cover; 62. Storage shell; 621. Guide pressure strip; 622. Front baffle; 63. Movable seat; 631. Side shaft rod; 632. Middle groove; 64. Protection box; 640. Guide slide bar; 641. Front shell; 642. Tail shell; 643. Vertical slide bar; 644. Dial plate; 65. Socket assembly ; 651, sealing cover; 652, polygonal shell; 653, telescopic frame; 654, right-angle frame; 655, plug-in tube; 656, V-shaped guide frame; 657, connecting socket; 7, triangular shell; 71, guide splint; 72, threaded sleeve; 8, self-locking assembly; 81, locking frame; 811, horizontal groove; 812, auxiliary vertical plate; 82, brake plate; 83, supporting oblique block; 84, handle rod; 841, handle ring. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0054] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0057] Example 1

[0058] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a mobile DC energy storage device includes an energy storage box 1, which includes a main box shell 11 and a front cover 12. The front cover 12 is installed on the front end surface of the main box shell 11, and one side of the front cover 12 is rotatably connected to the main box shell 11. An adjustable box group 2 is installed on the rear end surface of the main box shell 11. The adjustable box group 2 is slidably connected to the main box shell 11 front and back. A driving member 3 for adjusting the front and rear position is also installed on the adjustable box group 2. A plurality of groups of placement plates 4 are evenly installed on the adjustable box group 2 from top to bottom. The placement plates 4 are longitudinally slidably connected to the adjustable box group 2, and a driving member 5 for adjusting the height of the placement plates 4 is also installed in the adjustable box group 2. An equipment box 6 is installed on the inner side of the bottom surface of the main box shell 11, and the equipment box 6 is fixedly connected to the main box shell 11. The main box shell 11 includes a square shell 111, a moving wheel group 112, a device handle 113 and an operating rod 114. The moving wheel group 112 is evenly arranged at the four corners of the lower end surface of the square shell 111. The device handle 113 and the operating rod 114 are fixedly installed on both sides of the upper end surface of the square shell 111. Heat dissipation hole plates 115 are also provided on both sides of the square shell 111. The heat dissipation hole plates 115 are fixedly connected to the square shell 111. The front cover 12 includes a cover part 121, a display screen 122 and a bottom cover 123 for shielding the device box 6. One side of the cover part 121 is rotatably installed on the front end surface of the square shell 111, the display screen 122 is fixedly installed on the outer side surface of the cover part 121, the bottom cover 123 is installed on the lower end surface of the cover part 121, and the bottom cover 123 is rotatably connected to the cover part 121. A magnetic suction block that attracts the cover part 121 is also installed on the inner side surface of the bottom cover 123.

[0059] Reference Figure 3 , Fig. 9 and Fig.10As shown, the adjustable box group 2 includes a back plate 21, a front frame shell 22 and a middle plate seat 23 for mounting a placement plate 4 and a driving member 25. The front frame shell 22 is fixedly mounted on the front end surface of the back plate 21, and the front frame shell 22 is plugged into the square shell 111. The front frame shell 22 is slidably connected to the square shell 111. The middle plate seat 23 is installed in the middle of the front frame shell 22, and the head and both sides of the middle plate seat 23 are fixedly connected to the front frame shell 22. The middle part of the placement plate 4 is slidably mounted on the middle plate seat 23, and both sides of the placement plate 4 are attached to the inner side surface of the front frame shell 22. The driving member 25 is vertically fixed in the middle plate seat 23. The front frame shell 22 includes a concave middle shell 221 and an L-shaped baffle 222. The concave middle shell 221 and the L-shaped baffle 222 are both fixedly mounted on the front end surface of the back plate 21. The L-shaped baffle 222 is symmetrically mounted on both sides of the concave middle shell 221. The head of the L-shaped baffle 222 is fixedly connected to the concave middle shell 221. A number of positioning holes 223 are evenly opened on the concave middle shell 221. The middle plate seat 23 includes a vertical plate frame 231, an angle plate 232 and a horizontal plate 233. The vertical plate frame 231 is fixedly installed on the lower end surface of the concave middle shell 221, and a plurality of longitudinal sliding grooves 234 connected with the positioning holes 223 are evenly opened on the vertical plate frame 231. The angle plate 232 is arranged on the lower end surface of the vertical plate frame 231, and the angle plate 232 and the vertical plate frame 231 are integrally formed. The horizontal plate 233 is installed between the angle plate 232 and the L-shaped baffle plate 222, and the two ends of the horizontal plate 233 are respectively fixedly connected to the angle plate 232 and the L-shaped baffle plate 222.

[0060] Reference Figure 6 , Figure 7 , Fig.10 and Fig.11 As shown, the driving member 3 includes a motor 31 and a positioning screw 32. The motor 31 is fixedly mounted on the rear end face of the back plate 21. The positioning screw 32 is arranged in the angle plate 232, and the positioning screw 32 is rotatably connected to the back plate 21. The rear end of the positioning screw 32 is connected to the output end of the motor 31. The upper end face of the equipment box 6 is provided with a triangular shell 7 that slidably cooperates with the angle plate 232. The triangular shell 7 is fixedly connected to the equipment box 6, and two groups of guide clamps 71 are symmetrically installed on the inner side surface of the triangular shell 7. A threaded sleeve 72 that cooperates with the positioning screw 32 is arranged near the rear end of the triangular shell 7. The threaded sleeve 72 and the guide clamp 71 are both fixedly connected to the triangular shell 7.

[0061] Reference Figure 2 , Figure 3 and Figure 8As shown, the placement plate 4 includes a positioning seat 41, a display plate 42 and a positioning frame 43. The positioning seat 41 includes a back plate 411, a top plate 412 and a partition block 413. The top plate 412 is installed on the upper end surface of the back plate 411, and the partition block 413 is arranged in the middle of the lower end surface of the top plate 412. The back plate 411, the top plate 412 and the partition block 413 are integrally formed. The display plate 42 is symmetrically installed at both ends of the partition block 413, and the display plate 42 is fixedly installed on the front end surface of the back plate 411. The positioning frame 43 is installed on the lower end surface of the display plate 42 near the front end, and the positioning frame 43 is fixedly connected to the display plate 42.

[0062] Reference Fig.12 and Fig.13 As shown, the driving member 2 5 includes a suspension plate 51, a motor 2 52, a longitudinal screw 53 and a bracket 54. The suspension plate 51 is fixedly installed in the concave middle shell 221. The motor 2 52 is evenly installed on the lower end surface of the suspension plate 51, and the motor 2 52 is fixedly connected to the suspension plate 51. The longitudinal screw 53 passes through the positioning hole 223 and extends into the longitudinal slide groove 234, and the head of the longitudinal screw 53 is connected to the output end of the motor 2 52. The bracket 54 includes a lifting block 541, an extension support rod 542 and a threaded tube 543. The lifting block 541 is slidably installed in the longitudinal slide groove 234, the extension support rod 542 is fixedly installed on both sides of the bracket 54, the threaded tube 543 is fixedly installed on the lower end surface of the lifting block 541, and the threaded tube 543 is threadedly connected to the longitudinal screw 53.

[0063] Example 2

[0064] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a mobile DC energy storage device includes an energy storage box 1, which includes a main box shell 11 and a front cover 12. The front cover 12 is installed on the front end surface of the main box shell 11, and one side of the front cover 12 is rotatably connected to the main box shell 11. An adjustable box group 2 is installed on the rear end surface of the main box shell 11. The adjustable box group 2 is slidably connected to the main box shell 11 front and back. A driving member 3 for adjusting the front and rear position is also installed on the adjustable box group 2. A plurality of groups of placement plates 4 are evenly installed on the adjustable box group 2 from top to bottom. The placement plates 4 are longitudinally slidably connected to the adjustable box group 2, and a driving member 5 for adjusting the height of the placement plates 4 is also installed in the adjustable box group 2. An equipment box 6 is installed on the inner side of the bottom surface of the main box shell 11, and the equipment box 6 is fixedly connected to the main box shell 11.

[0065] Reference Fig.14 , Fig.15 Fig.16 , Fig.17 , Fig.18 , Fig.19 and Fig. 20As shown, the equipment box 6 includes a control box 61, a storage shell 62, a movable seat 63 and a protective box 64. The control box 61 is fixedly installed on the inner side of the bottom surface of the square shell 111, and a removable cover 611 is installed on the front end surface of the control box 61. The storage shell 62 is fixedly installed on the side of the control box 61. The movable seat 63 is slidably installed in the storage shell 62, and side shafts 631 that match the storage shell 62 are fixedly installed on both sides of the movable seat 63. Two groups of guide strips 621 are symmetrically installed on the inner side surface of the storage shell 62. The guide strips 621 are integrally formed with the storage shell 62, and the front end surface of the guide strips 621 is also fixedly installed with a front baffle 622 with a limited side shaft 631. The lower end surface of the protective box 64 is fixedly installed with a guide slide 64 that slidably matches the movable seat 63 0, the guide slide 640 is slidably installed on the movable seat 63, and the lower end surface of the protective box 64 is installed with a self-locking component 8 that is mutually locked with the movable seat 63, the socket group 65 includes a sealing cover 651, a polygonal shell 652, a telescopic frame 653 and a right-angle frame 654, the sealing cover 651 is installed in the protective box 64, and the lower end surface of the sealing cover 651 is fixedly installed with a plug-in tube 655 and a V-shaped guide frame 656, the polygonal shell 652 is sleeved and installed on the plug-in tube 655, the telescopic frame 653 is slidably installed on both sides of the V-shaped guide frame 656, and a number of connecting sockets 657 are fixedly installed on the polygonal shell 652 and the telescopic frame 653, the right-angle frame 654 is fixedly installed at both ends of the lower end surface of the sealing cover 651, and the right-angle frame 654 is slidably installed in the protective box 64.

[0066] Reference Fig.16 , Fig.21 , Fig. 22 and Fig.23 As shown, a middle groove 632 for installing the self-locking component 8 is opened in the middle of the lower end surface of the movable seat 63, and the protective box 64 includes a front shell 641 and a tail shell 642, and the tail shell 642 is fixedly installed on the rear end surface of the front shell 641. A plug-in tube 655 is provided in the front shell 641 for slidingly installing on a vertical slide bar 643, and the vertical slide bar 643 is fixedly connected to the front shell 641, and a paddle 644 is also fixedly installed on the lower end surface of the front shell 641. The self-locking component 8 includes a lock frame 81, a brake plate 82, a support inclined block 83 and a handle bar 84, and the lock frame 81 is fixedly installed on the front shell 64 1, the brake plate 82 is rotatably installed in the lock frame 81, the supporting inclined block 83 is slidably installed in the lock frame 81, and horizontal grooves 811 for installing the supporting inclined block 83 are opened on both sides of the lock frame 81, and an auxiliary vertical plate 812 is fixedly installed in the middle of the lock frame 81, and a supporting spring for supporting the inclined block 83 is fixedly installed on the auxiliary vertical plate 812, and a handle rod 84 is slidably installed in the middle of the lock frame 81, and one end of the handle rod 84 passes through the auxiliary vertical plate 812 and the supporting spring and is fixedly connected to the supporting inclined block 83, and the other end of the handle rod 84 is fixedly installed with a handle ring 841.

[0067] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A mobile DC energy storage device, comprising an energy storage box (1), characterized in that: The energy storage box (1) comprises a main box shell (11) and a front cover (12), wherein the front cover (12) is mounted on the front end surface of the main box shell (11), and one side of the front cover (12) is rotatably connected to the main box shell (11); an adjustable box group (2) is mounted on the rear end surface of the main box shell (11), wherein the adjustable box group (2) is slidably connected to the main box shell (11) in a front-rear manner; a driving member (3) for adjusting the front-rear position is also mounted on the adjustable box group (2); a plurality of groups of placement plates (4) are evenly mounted on the adjustable box group (2) from top to bottom, wherein the placement plates (4) are longitudinally slidably connected to the adjustable box group (2), and a driving member (5) for adjusting the height of the placement plates (4) is also mounted in the adjustable box group (2); an equipment box (6) is mounted on the inner side of the bottom surface of the main box shell (11), and the equipment box (6) is fixedly connected to the main box shell (11).

2. A mobile DC energy storage device according to claim 1, characterized in that: The main box shell (11) comprises a square shell (111), a moving wheel group (112), a device handle (113) and an operating rod (114); the moving wheel group (112) is evenly arranged at four corners of the lower end surface of the square shell (111); the device handle (113) and the operating rod (114) are fixedly mounted on both sides of the upper end surface of the square shell (111); heat dissipation hole plates (115) are also arranged on both sides of the square shell (111); the heat dissipation hole plates (115) are fixedly connected to the square shell (111); the front cover (114) is provided with a plurality of heat dissipation holes (115) and a plurality of heat dissipation holes (115) are provided on the front cover (114); 12) comprises a cover plate portion (121), a display screen (122) and a bottom cover (123) for shielding an equipment box (6); one side of the cover plate portion (121) is rotatably mounted on the front end surface of the square housing (111); the display screen (122) is fixedly mounted on the outer side surface of the cover plate portion (121); the bottom cover (123) is mounted on the lower end surface of the cover plate portion (121), and the bottom cover (123) is rotatably connected to the cover plate portion (121); and a magnetic attraction block that is attracted to the cover plate portion (121) is also mounted on the inner side surface of the bottom cover (123).

3. A mobile DC energy storage device according to claim 2, characterized in that: The adjustable box group (2) comprises a back plate (21), a front frame shell (22) and a middle plate seat (23) for mounting a placement plate (4) and a second driving member (5); the front frame shell (22) is fixedly mounted on the front end surface of the back plate (21), and the front frame shell (22) is plugged and mounted in a square shell (111); the front frame shell (22) is slidably connected to the square shell (111); the middle plate seat (23) is mounted in the middle of the front frame shell (22), and the head and both sides of the middle plate seat (23) are fixedly connected to the front frame shell (22); the middle of the placement plate (4) is slidably mounted on the middle plate seat (23), and both sides of the placement plate (4) are fitted on the inner side surface of the front frame shell (22); and the second driving member (5) is vertically fixed in the middle plate seat (23).

4. A mobile DC energy storage device according to claim 3, characterized in that: The front frame shell (22) comprises a concave middle shell (221) and an L-shaped baffle (222); the concave middle shell (221) and the L-shaped baffle (222) are both fixedly mounted on the front end surface of the back plate (21); the L-shaped baffle (222) is symmetrically mounted on both sides of the concave middle shell (221); the head of the L-shaped baffle (222) is fixedly connected to the concave middle shell (221); and a plurality of positioning holes (223) are evenly opened on the concave middle shell (221).

5. A mobile DC energy storage device according to claim 4, characterized in that: The middle plate seat (23) comprises a vertical plate frame (231), an angle plate (232) and a horizontal plate (233); the vertical plate frame (231) is fixedly mounted on the lower end surface of the concave middle shell (221), and a plurality of longitudinal slide grooves (234) connected to the positioning holes (223) are evenly arranged on the vertical plate frame (231); the angle plate (232) is arranged on the lower end surface of the vertical plate frame (231), and the angle plate (232) and the vertical plate frame (231) are integrally formed; the horizontal plate (233) is mounted between the angle plate (232) and the L-shaped baffle (222), and the two ends of the horizontal plate (233) are respectively fixedly connected to the angle plate (232) and the L-shaped baffle (222).

6. A mobile DC energy storage device according to claim 5, characterized in that: The driving member (3) comprises a motor (31) and a positioning screw (32), wherein the motor (31) is fixedly mounted on the rear end face of the back plate (21), the positioning screw (32) is arranged in the angle plate (232), and the positioning screw (32) is rotatably connected to the back plate (21), and the rear end of the positioning screw (32) is connected to the output end of the motor (31), and the upper end face of the device box (6) is provided with a triangular shell (7) which is slidably matched with the angle plate (232), the triangular shell (7) is fixedly connected to the device box (6), and two groups of guide clamps (71) are symmetrically mounted on the inner side face of the triangular shell (7), and a threaded sleeve (72) which is matched with the positioning screw (32) is arranged near the rear end of the triangular shell (7), and the threaded sleeve (72) and the guide clamp (71) are both fixedly connected to the triangular shell (7).

7. A mobile DC energy storage device according to claim 6, characterized in that: The placement plate (4) comprises a positioning seat (41), a placing plate (42) and a positioning frame (43); the positioning seat (41) comprises a backing plate (411), a top plate (412) and a partition block (413); the top plate (412) is mounted on the upper end surface of the backing plate (411); the partition block (413) is arranged in the middle of the lower end surface of the top plate (412); the backing plate (411), the top plate (412) and the partition block (413) are integrally formed; the placing plate (42) is symmetrically mounted on both ends of the partition block (413); the placing plate (42) is fixedly mounted on the front end surface of the backing plate (411); the positioning frame (43) is mounted on the lower end surface of the placing plate (42) close to the front end; and the positioning frame (43) is fixedly connected to the placing plate (42).

8. A mobile DC energy storage device according to claim 7, characterized in that: The second driving member (5) comprises a suspension plate (51), a second motor (52), a longitudinal screw (53) and a bracket (54); the suspension plate (51) is fixedly mounted in the concave middle shell (221); the second motor (52) is evenly mounted on the lower end surface of the suspension plate (51); the second motor (52) is fixedly connected to the suspension plate (51); the longitudinal screw (53) passes through the positioning hole (223) and extends into the longitudinal slide groove (234); and the longitudinal screw (53) is The head is connected to the output end of the second motor (52); the bracket (54) comprises a lifting block (541), an extension support rod (542) and a threaded tube (543); the lifting block (541) is slidably installed in the longitudinal slide groove (234); the extension support rod (542) is fixedly installed on both sides of the bracket (54); the threaded tube (543) is fixedly installed on the lower end surface of the lifting block (541), and the threaded tube (543) is threadedly connected to the longitudinal screw rod (53).

9. A mobile DC energy storage device according to any one of claims 2 to 8, characterized in that: The equipment box (6) comprises a control box (61), a storage shell (62), a movable seat (63) and a protective box (64); the control box (61) is fixedly mounted on the inner side of the bottom surface of the square housing (111), and a detachable blocking cover (611) is mounted on the front end surface of the control box (61); the storage shell (62) is fixedly mounted on the side of the control box (61); the movable seat (63) is slidably mounted in the storage shell (62), and both sides of the movable seat (63) are fixedly mounted. A side shaft (631) matched with the storage shell (62) is fixedly installed, and two guide strips (621) are symmetrically installed on the inner side surface of the storage shell (62). The guide strips (621) and the storage shell (62) are integrally formed, and the front end surface of the guide strips (621) is also fixedly installed with a front baffle (622) with a limited side shaft (631). The lower end surface of the protection box (64) is fixedly installed with a guide slide bar (640) slidably matched with the movable seat (63). ), the guide slide bar (640) is slidably mounted on the movable seat (63), and the lower end surface of the protection box (64) is mounted with a self-locking component (8) that is mutually locked with the movable seat (63), the socket group (65) comprises a sealing cover (651), a polygonal shell (652), a telescopic frame (653) and a right-angle frame (654), the sealing cover (651) is mounted in the protection box (64), and the lower end surface of the sealing cover (651) is fixedly mounted with a plug-in pipe (655 ) and a V-shaped guide frame (656), the polygonal shell (652) is sleeved and installed on the plug-in tube (655), the telescopic frame (653) is slidably installed on both sides of the V-shaped guide frame (656), and a plurality of connecting sockets (657) are fixedly installed on the polygonal shell (652) and the telescopic frame (653), the right-angle frame (654) is fixedly installed on both ends of the lower end surface of the sealing cover (651), and the right-angle frame (654) is slidably installed in the protective box (64).

10. A mobile DC energy storage device according to claim 9, characterized in that: A middle groove (632) for installing a self-locking component (8) is provided in the middle of the lower end surface of the movable seat (63); the protective box (64) comprises a front shell (641) and a tail shell (642); the tail shell (642) is fixedly mounted on the rear end surface of the front shell (641); a plug-in tube (655) is provided in the front shell (641) for slidingly mounting on a vertical slide bar (643); the vertical slide bar (643) is fixedly connected to the front shell (641); and a paddle (644) is also fixedly mounted on the lower end surface of the front shell (641); the self-locking component (8) comprises a lock frame (81), a brake plate (82), a support inclined block (83) and a handle bar (84); the lock frame (81) is fixedly mounted on the front shell (641) The lower end surface of the lock frame (81), the brake plate (82) is rotatably installed in the lock frame (81), the supporting bevel block (83) is slidably installed in the lock frame (81), and horizontal grooves (811) for installing the supporting bevel block (83) are opened on both sides of the lock frame (81), and an auxiliary vertical plate (812) is fixedly installed in the middle of the lock frame (81), and a supporting spring (84) of the supporting bevel block (83) is fixedly installed on the auxiliary vertical plate (812), and the handle rod (84) is slidably installed in the middle of the lock frame (81), and one end of the handle rod (84) passes through the auxiliary vertical plate (812) and the supporting spring (84) to be fixedly connected with the supporting bevel block (83), and the other end of the handle rod (84) is fixedly installed with a handle ring (841).

Citation Information

Patent Citations

  • Energy storage battery pack

    CN117559069A

  • Vibration support for automobile power battery pack

    CN118067342A

  • Energy storage device for new energy battery box storage

    CN118523030A

  • Battery energy storage box convenient for capacity expansion

    CN216980755U

  • Battery box capable of adjusting and replacing battery cells with different sizes

    CN218215566U