Standby power box and photovoltaic power generation system

Abstract

The utility model provides a standby power box and a photovoltaic power generation system. The standby power box comprises a cover body, a cover plate, a lock cylinder, a gear, two cantilevers arranged at intervals in the second direction, a connecting rod piece and two rollers. The cover plate is used for covering the opening of the cover body in the first direction, and the lock cylinder penetrates through the side plate of the cover body and is in coaxial transmission with the gear. Each set of cantilevers comprises two cantilevers arranged at intervals in the axial direction of the lock cylinder, one end of each cantilever is used for being fixed to the cover plate, and the other end of each cantilever and the cover plate are arranged at intervals in the first direction. The connecting rod piece is meshed with the gear and arranged between the gear and the cover plate. Each end of the connecting rod piece is used for being connected with a set of idler wheels in a rolling mode, each set of idler wheels are arranged between the corresponding set of cantilevers, each set of idler wheels comprises two idler wheels, each idler wheel is axially parallel to the lock cylinder, and each idler wheel of each set of idler wheels makes contact with the surface, facing the cover plate, of one cantilever of the corresponding set of cantilevers. The interval between the other ends of the two cantilevers of each group of cantilevers in the axial direction of the lock cylinder is smaller than that between one ends of the two cantilevers and larger than or equal to the size of each end of the connecting rod piece in the axial direction of the lock cylinder.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and more specifically, to a backup power box and a photovoltaic power generation system. Background Art

[0002] In order to protect the photovoltaic components in the photovoltaic power generation system, a backup box is usually set between the photovoltaic inverter and the power grid in the photovoltaic power generation system. The backup box can convert the AC power output by the photovoltaic inverter into the AC power required for one or more loads to work when the AC power output by the photovoltaic inverter cannot be transmitted to the power grid, so as to supply power to one or more loads.

[0003] However, the existing locking structure cannot balance the two parameters of unlocking / locking efficiency and space utilization, which further affects the performance of the backup power box and the performance of the photovoltaic power generation system. Utility Model Content

[0004] The present application provides a backup power box and a photovoltaic power generation system. The backup power box has high unlocking / locking efficiency and space utilization, thereby improving the performance of the backup power box and the performance of the photovoltaic power generation system.

[0005] In a first aspect, a backup power box is provided, which includes a housing, a lock core, a gear, two groups of cantilever structures, a connecting rod assembly and two groups of rollers. The housing includes a cover body and a cover plate, the cover body includes an opening along a first direction, the cover plate is used to cover the opening, and the lock core passes through a side plate of the cover body and is coaxially transmitted with the gear. The two groups of cantilever structures are arranged at intervals along the second direction, each group of cantilever structures includes two cantilever structures arranged at intervals along the axial direction of the lock core, one end of each cantilever structure is used to fix and connect a side surface of the cover plate, and the other end of each cantilever structure is arranged at intervals with a side surface along the first direction. The connecting rod assembly is arranged between the gear and the cover plate, and the connecting rod assembly is meshed with the gear. In addition, each end of the connecting rod assembly is used to roll and connect a group of rollers, each group of rollers is arranged between two cantilever structures of a group of cantilever structures, each group of rollers includes two rollers, each roller axis is parallel to the axial direction of the lock core, and each roller of each group of rollers contacts the surface of a cantilever structure of a group of cantilever structures facing the cover plate. The distance between the other end of one cantilever structure in each group of cantilever structures and the other end of another cantilever structure along the axial direction of the lock core is smaller than the distance between one end of one cantilever structure and one end of another cantilever structure, and is greater than or equal to the dimension of each end of the connecting rod assembly along the axial direction of the lock core.

[0006] When the lock core is twisted counterclockwise or clockwise, the lock core drives the gear to rotate, and the gear engages with the connecting rod assembly to move the connecting rod assembly in the second direction. At the same time, each set of rollers at both ends of the connecting rod assembly can roll along the cantilever structure toward the surface of the cover plate, so that each set of rollers detaches from the cantilever structure toward the surface of the cover plate in the second direction. Since the size of each end of the connecting rod assembly is less than or equal to the interval between the other end of one cantilever structure of each set of cantilever structures and the other end of another cantilever structure, when the cover plate is pulled in the first direction, the connecting rod assembly can detach from each set of cantilever structures in the first direction, so that the cover plate is separated from the cover body, and the backup power box is unlocked.

[0007] After the cover plate is buckled with the opening of the cover body, the lock core is twisted clockwise or counterclockwise, and the lock core drives the gear to rotate, and the gear engages with the connecting rod assembly to move the connecting rod assembly in the opposite direction of the second direction. Since each group of rollers is arranged between two cantilever structures of a group of cantilever structures, the connecting rod assembly can drive each group of rollers at both ends thereof to move in the opposite direction of the second direction, so that each group of rollers re-contacts the surface of the cantilever structure facing the cover plate. Therefore, each group of rollers can be clamped between the two cantilever structures of each group of cantilever structures, so that the cover plate and the cover body are re-fixed, and the backup power box is locked.

[0008] It can be seen that the backup power box provided in the embodiment of the present application realizes unlocking or locking the backup power box through the meshing transmission of the gear and the connecting rod assembly and the rolling transmission of the roller and the surface of the cantilever structure. On the one hand, since the friction force of the meshing transmission and the rolling transmission is relatively small, the torque of twisting the lock core is relatively small, thereby saving the time for unlocking or locking the backup power box and improving the unlocking efficiency or locking efficiency of the backup power box. On the other hand, the structure for unlocking or locking the backup power box is simple and occupies less space, thereby improving the space utilization of the backup power box. Furthermore, the performance of the backup power box is improved.

[0009] In one implementation, the backup power box further includes a limiter, which is arranged between the connecting rod assembly and the cover plate, and is used to fix a side plate, wherein the projection of the limiter in the first direction overlaps with the projection of the gear, and the distance between the limiter and the connecting rod assembly in the first direction is smaller than the distance between the limiter and the cover plate.

[0010] During the transportation of the backup power box, if the backup power box collides, the limiter can reduce the degree of bending of the connecting rod assembly in the direction toward the cover plate, so that the connecting rod assembly and the gear can be meshed with high meshing efficiency. In addition, the reliability of unlocking and locking the backup power box is improved.

[0011] In one implementation, the size of the stopper along the axial direction of the lock core is greater than or equal to the size of the connecting rod assembly. In this way, the stopper can prevent the connecting rod assembly from bending in the direction toward the cover plate, so that the reliability of unlocking and locking the backup power box is higher.

[0012] In one implementation, the backup power box further includes a plastic pad and at least one group of connecting columns, the plastic pad is arranged between the connecting rod assembly and the stopper, one end of each group of connecting columns is used to fix and connect one side of the plastic pad, and the other end of each group of connecting columns is used to pass through and be fixed to the stopper. In this way, the plastic pad can prevent the stopper from dropping metal powder and thus affect the operation of other components in the backup power box.

[0013] In one implementation, the stopper includes at least one through hole extending along the first direction, each group of connecting posts includes a plurality of connecting posts, and the plurality of connecting posts of each group of connecting posts are arranged at intervals along the circumference of a through hole of the stopper. The distance between the other end of each connecting post and the central axis of a through hole of the stopper is greater than or equal to the radius of the through hole of the stopper.

[0014] In this way, after the other ends of the multiple connecting columns of each group of connecting columns pass through a through hole of the stopper, they can move in a radial direction away from the through hole center of the stopper, so that the plastic pad and the stopper are fixedly connected. Further, the assembly process of the plastic pad and the stopper is simplified.

[0015] In one implementation, the connecting rod assembly includes three connecting rods, one end of each connecting rod of two connecting rods among the three connecting rods is used for rolling connection with a group of rollers, and the other connecting rod is used for connecting the two connecting rods, and the distance between each connecting rod of the two connecting rods and the cover plate is smaller than the distance between the other connecting rod and the cover plate. Among them, the other connecting rod includes a plurality of through holes penetrating along the first direction, and the plurality of through holes are arranged at intervals along the second direction, and each through hole of the other connecting rod is used for embedding in the teeth of the gear.

[0016] During the unlocking or locking process of the backup power box, on the one hand, one connecting rod and the other connecting rod can absorb the deformation along the first direction, thereby improving the strength of the connecting rod assembly, thereby reducing the torque of twisting the lock cylinder and improving the unlocking efficiency or locking efficiency of the backup power box. On the other hand, the deformation of the other connecting rod along the first direction can be reduced, thereby improving the meshing efficiency of the other connecting rod and the gear.

[0017] In one implementation, the size of each through hole of the other connecting rod is reduced along the direction in which the other connecting rod is away from the gear, so that the meshing efficiency between the teeth of the gear and each through hole of the connecting rod assembly can be improved.

[0018] In one implementation, the distance between each end of the other connecting rod and the cover plate is smaller than the distance between the middle portion of the other connecting rod and the cover plate. In this way, each end of the other connecting rod can absorb the deformation along the first direction, further improving the meshing efficiency of the other connecting rod and the gear.

[0019] In one implementation, the backup power box further includes at least one support, each support is used to be fixedly connected to a side plate, each support includes a mounting hole penetrating along the second direction, and each connecting rod of the two connecting rods passes through a mounting hole of a support.

[0020] In this way, each support can guide one of the two connecting rods to move along the second direction, reducing the deformation of each connecting rod of the two connecting rods along the first direction or the axial direction of the lock core, thereby increasing the service life of the backup power box.

[0021] In one implementation, the size of each end of the connecting rod assembly along the axial direction of the lock core is smaller than the size of the middle portion of the connecting rod assembly, so that the strength of the connecting assembly can be improved.

[0022] In one implementation, the two rollers of each group of rollers are coaxially driven, and the diameter of each roller of each group of rollers is smaller than or equal to the size of each cantilever structure of a group of cantilever structures along the second direction, and smaller than the size of each cantilever structure of a group of cantilever structures along the first direction. In this way, the space occupied by each group of rollers is small, so that the space in the backup box can be used to deploy other components.

[0023] In one implementation, the interval between the two rollers of each group of rollers is greater than or equal to the interval between the other end of one cantilever structure in a group of cantilever structures and the other end of another cantilever structure. In other words, the projection of each roller of each group of rollers along the first direction is located within the surface projection of one cantilever structure in a group of cantilever structures toward the cover plate. In this way, when the backup power box is locked, when the cover plate is pulled along the first direction, each group of rollers can block a group of cantilever structures from moving along the first direction, thereby increasing the reliability of locking the backup power box.

[0024] In one implementation, the distance between the middle portion of each cantilever structure facing the cover plate surface and the cover plate along the first direction is smaller than the distance between the other portions of the surface of each cantilever structure facing the cover plate and the cover plate. In this way, the speed at which each roller is separated from the cantilever structure in contact with it can be accelerated, thereby saving the unlocking time of the backup power box.

[0025] In one implementation, the cover body also includes another side plate, the other side plate is arranged adjacent to the one side plate, a group of cantilever structures are arranged between the other side plate and the other group of cantilever structures, and the interval between one group of cantilever structures and the other side plate is smaller than the interval between the two groups of cantilever structures.

[0026] On the basis of not affecting the unlocking or locking of the backup power box, each set of cantilever structures is arranged in the edge area of ​​the cover plate as much as possible to avoid affecting the deployment of other components in the housing.

[0027] In a second aspect, a photovoltaic power generation system is provided, which includes a photovoltaic module, a photovoltaic inverter and a backup power box as described in any one of the first aspect and possible implementation methods of the first aspect, which are electrically connected in sequence, wherein the photovoltaic inverter is used to convert the direct current output by the photovoltaic module into alternating current and input it into the backup power box, and the output end of the backup power box is used to connect to an AC power grid or a load.

[0028] According to the description of the first aspect, the performance of the backup power box of the first aspect is improved, thereby improving the performance of the photovoltaic power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a photovoltaic power generation system provided in an embodiment of the present application.

[0030] Figure 2 A schematic diagram of the structure of a backup power box provided in an embodiment of the present application.

[0031] Figure 3 for Figure 2 A partial structural diagram of the backup power box is shown.

[0032] Figure 4 for Figure 2 A schematic diagram of the structure of the cover plate in the backup power box is shown.

[0033] Figure 5 for Figure 4 An enlarged schematic diagram of portion A of the cover plate is shown.

[0034] Figure 6 for Figure 2 A schematic diagram of the partial structure of the cover plate in the backup power box is shown.

[0035] Figure 7 for Figure 6 An enlarged schematic diagram of portion B of the cover plate is shown.

[0036] Figure 8 for Figure 2 A schematic diagram of the structure of the connecting rod assembly and in the backup power box is shown.

[0037] Fig. 9 for Figure 8 A cross-sectional schematic diagram of the connecting rod assembly is shown.

[0038] Fig.10 for Fig. 9 An enlarged schematic diagram of portion C of the connecting rod assembly is shown.

[0039] Fig.11 for Figure 2 A partial structural diagram of the backup power box is shown.

[0040] Fig.12 for Fig.11 An enlarged schematic diagram of portion D of the backup power box is shown.

[0041] Fig.13 for Figure 2 The diagram is a partial structural diagram of a backup power box in an unlocked state.

[0042] Fig.14 for Figure 2 A schematic diagram of the structure of the limiting component in the backup power box is shown.

[0043] Fig.15 and Fig.16 They are Figure 2 Schematic diagram of the structure of the plastic pad in the backup power box shown.

[0044] Fig.17 for Figure 2 Schematic diagram of the assembly structure of the limiter and the plastic pad in the backup power box shown. DETAILED DESCRIPTION

[0045] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0046] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in this article is merely a way to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0047] In the description of this embodiment, unless otherwise specified, “plurality” means two or more.

[0048] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" in the embodiments of the present application are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0049] References to "some embodiments" and the like described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in some embodiments" and the like appearing in different places in this specification do not necessarily all refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0050] The “vertical” mentioned in this application is not vertical in a strict sense, but is within the allowable error range.

[0051] In the embodiments of the present application, the same reference numerals represent the same component or the same part. In the embodiments of the present application, for multiple identical parts, only one of the parts may be marked with a reference numeral in the drawings as an example. For other identical parts or components, the reference numerals are also applicable. In addition, the sizes and dimensions of the parts shown in the drawings are only exemplary.

[0052] The embodiment of the present application provides a backup power box, which includes a housing, a lock core, a gear, two groups of cantilever structures, a connecting rod assembly and two groups of rollers. The housing includes a cover body and a cover plate, the cover body includes an opening along a first direction, the cover plate is used to cover the opening, and the lock core passes through a side plate of the cover body and is coaxially transmitted with the gear. The two groups of cantilever structures are arranged at intervals along the second direction, each group of cantilever structures includes two cantilever structures arranged at intervals along the axial direction of the lock core, one end of each cantilever structure is used to fix and connect a side surface of the cover plate, and the other end of each cantilever structure is arranged at intervals with a side surface along the first direction. The connecting rod assembly is arranged between the gear and the cover plate, and the connecting rod assembly is meshed with the gear. In addition, each end of the connecting rod assembly is used to roll and connect a group of rollers, each group of rollers is arranged between two cantilever structures of a group of cantilever structures, each group of rollers includes two rollers, each roller axis is parallel to the axial direction of the lock core, and each roller of each group of rollers contacts the surface of a cantilever structure of a group of cantilever structures facing the cover plate. The distance between the other end of one cantilever structure in each group of cantilever structures and the other end of another cantilever structure along the axial direction of the lock core is smaller than the distance between one end of one cantilever structure and one end of another cantilever structure, and is greater than or equal to the dimension of each end of the connecting rod assembly along the axial direction of the lock core.

[0053] When the lock core is twisted counterclockwise or clockwise, the lock core drives the gear to rotate, and the gear engages with the connecting rod assembly to move the connecting rod assembly in the second direction. At the same time, each set of rollers at both ends of the connecting rod assembly can roll along the cantilever structure toward the surface of the cover plate, so that each set of rollers detaches from the cantilever structure toward the surface of the cover plate in the second direction. Since the size of each end of the connecting rod assembly is less than or equal to the interval between the other end of one cantilever structure of each set of cantilever structures and the other end of another cantilever structure, when the cover plate is pulled in the first direction, the connecting rod assembly can detach from each set of cantilever structures in the first direction, so that the cover plate is separated from the cover body, and the backup power box is unlocked.

[0054] After the cover plate is buckled with the opening of the cover body, the lock core is twisted clockwise or counterclockwise, and the lock core drives the gear to rotate, and the gear engages with the connecting rod assembly to move the connecting rod assembly in the opposite direction of the second direction. Since each group of rollers is arranged between two cantilever structures of a group of cantilever structures, the connecting rod assembly can drive each group of rollers at both ends thereof to move in the opposite direction of the second direction, so that each group of rollers re-contacts the surface of the cantilever structure facing the cover plate. Therefore, each group of rollers can be clamped between the two cantilever structures of each group of cantilever structures, so that the cover plate and the cover body are re-fixed, and the backup power box is locked.

[0055] It can be seen that the backup power box provided in the embodiment of the present application realizes unlocking or locking the backup power box through the meshing transmission of the gear and the connecting rod assembly and the rolling transmission of the roller and the surface of the cantilever structure. On the one hand, since the friction force of the meshing transmission and the rolling transmission is relatively small, the torque of twisting the lock core is relatively small, thereby saving the time for unlocking or locking the backup power box and improving the unlocking efficiency or locking efficiency of the backup power box. On the other hand, the structure for unlocking or locking the backup power box is simple and occupies less space, thereby improving the space utilization of the backup power box. Furthermore, the performance of the backup power box is improved.

[0056] The backup power box involved in the embodiment of the present application is used for power distribution and control. In the scenario of household circuit or small commercial circuit, the backup power box can also be called a distribution box. In the scenario of medium and large commercial circuit, the backup power box can also be called a distribution box. It should be understood that the components included in the backup power box may be different in different application scenarios.

[0057] Combine the following Figure 1 An example application scenario of the backup power box involved in the embodiment of the present application is described in detail. Figure 1As shown, the photovoltaic power generation system 1 includes one or more photovoltaic modules 10, one or more photovoltaic inverters 20, a power grid 30, a backup power box 40, and one or more loads 50. Among them, the output end of the photovoltaic module 10 is connected to the photovoltaic inverter 20, and the connection relationship between the photovoltaic module 10 and the photovoltaic inverter 20 can be a one-to-one connection. One output end of the photovoltaic inverter 20 is used to connect to the backup power box 40. One output end of the backup power box 40 is used to connect to one or more loads 50, and the other output end of the backup power box 40 is used to connect to the power grid 30.

[0058] The photovoltaic power generation system 1 is a power generation system that converts solar radiation energy into electrical energy by using the photovoltaic effect of semiconductor materials. The photovoltaic power generation system provided in the embodiment of the present application can empower electric vehicles. The electric vehicles include pure electric vehicles (pure electric vehicle / battery electric vehicle, pure EV / battery EV), hybrid electric vehicles (hybrid electric vehicle, HEV), range extended electric vehicles (range extended electric vehicle, REEV), plug-in hybrid electric vehicles (plug-in hybrid electric vehicle, PHEV) or new energy vehicles (new energy vehicle, NEV), etc.

[0059] The photovoltaic module 10 may also be referred to as a photovoltaic array, and includes a plurality of photovoltaic (PV) strings. Each photovoltaic string includes a plurality of photovoltaic panels connected in series. Photovoltaic panels are used to convert light energy into electrical energy. The electrical energy generated by the photovoltaic panels is direct current (DC). The voltage across the photovoltaic string is equal to the sum of the voltages generated by the plurality of photovoltaic panels. The output power of the photovoltaic module may represent the electrical energy output per unit time of the photovoltaic module.

[0060] The photovoltaic inverter 20 is used to convert the direct current output by the photovoltaic module 10 into alternating current (AC) power, that is, to perform DC-AC conversion. The photovoltaic inverter 20 can also be called a DC-AC converter.

[0061] The backup power box 40 is used to convert the AC power output by the photovoltaic inverter 20 into the AC power required by one or more loads 50 to supply power to the one or more loads 50. The backup power box 40 is also used to provide the AC power output by the photovoltaic inverter 20 to the power grid 30.

[0062] In some embodiments, the photovoltaic power generation system 1 further includes an energy storage device 60, and another output terminal of the photovoltaic inverter 20 is used to connect the energy storage device 60. The energy storage device 60 is used to store electric energy and output electric energy to the backup power box 40. For example, when the electric energy converted by the photovoltaic assembly 10 is more than the electric energy required by the backup power box 40, the photovoltaic inverter 20 can output the excess electric energy to the energy storage device 60 so that the energy storage device 60 can store it. For example, when the electric energy converted by the photovoltaic assembly 10 is less than the electric energy required by the backup power box 40, the energy storage device 60 can output its stored electric energy to the backup power box 40.

[0063] Combine the following Figures 2 to 17 The structure of the backup power box 40 provided in the embodiment of the present application is described in detail.

[0064] like Figure 2 and Figure 3 As shown, the backup power box 40 includes a shell 410, which includes a cover body 411 and a cover plate 412. The cover body 411 has an opening along a first direction, and the cover plate 312 is used to cover the opening of the cover body 411 to form a shell 410 with a receiving cavity.

[0065] like Figures 2 to 4 As shown, one side 4121 of the cover plate 412 includes two groups of cantilever structures, such as one group of cantilever structures 421 and another group of cantilever structures 422, and the two groups of cantilever structures are arranged at intervals along the second direction. Among them, one side 4121 of the cover plate 412 is the surface of the cover plate 412 facing the cover body 411. Each group of cantilever structures includes two cantilever structures, and the two cantilever structures of each group of cantilever structures are arranged at intervals along the third direction. Figure 4 As shown, a set of two cantilever structures 421 includes a cantilever structure 421a and another cantilever structure 421b. Figure 4 and Figure 5As shown, the two cantilever structures of another group of cantilever structures 422 include a cantilever structure 422a and another cantilever structure 422b. One end A1 of each cantilever structure is used to fix and connect a side surface 4121 of the cover plate 412 of the housing 410, and the other end A2 of each cantilever structure is arranged at intervals with the side surface 4121 of the cover plate 412 along the first direction. In addition, the interval between the other end A2 of one cantilever plate and the other end A2 of another cantilever plate in each group of cantilever structures is smaller than the interval between one end A1 of one cantilever plate and one end A1 of another cantilever plate. For example, the interval between the other end A2 of one cantilever structure 421a of a group of cantilever structures 421 and the other end A2 of another cantilever structure 421b is smaller than the interval between one end A1 of one cantilever structure 421a and one end A1 of another cantilever structure 421b. The distance between the other end A2 of one cantilever structure 422a of another group of cantilever structures 422 and the other end A2 of another cantilever structure 422b is smaller than the distance between one end A1 of one cantilever structure 422a and one end A1 of another cantilever structure 422b. In other words, each cantilever structure includes an extension portion and a bending portion, the extension portion of each cantilever structure extends from one side surface 4121 of the cover plate 412 in a direction toward the cover body 411, and the bending portions of the two cantilever structures in each group of cantilever structures are bent in directions toward each other, and the bending portions of the two cantilever structures are spaced apart.

[0066] In some embodiments, the second direction, the first direction, and the third direction are perpendicular to each other. It should be noted that the second direction can also be understood as the length direction of the backup power box 40. The first direction can also be understood as the height direction of the backup power box 40. The third direction can also be understood as the width direction of the backup power box 40 or the axial direction of the lock core 431 or the axial direction of the gear 432 or the axial direction of the roller.

[0067] In some embodiments, in order to increase the strength of each cantilever structure, the backup power box 40 is further provided with a support structure, and one end A1 of each cantilever structure is fixedly connected to a side surface 4121 of the cover plate 412 through the support structure. In one example, one support structure is provided for each group of cantilever structures. Figure 4 As shown, a set of cantilever structures 421 are fixedly connected to a side surface 4121 of the cover plate 412 via a support structure 423. Figure 4 and Figure 5 As shown, another set of cantilever structures 422 is fixedly connected to a side surface 4121 of the cover plate 412 through another support structure 424. In this way, on the basis of ensuring the strength of each cantilever structure, not only the production cost of the backup power box 40 can be reduced, but also the weight of the backup power box 40 can be reduced.

[0068] In some embodiments, the support structure and each set of cantilever structures are integrated into one structure, which can reduce the production cost of the backup power box 40 .

[0069] In some embodiments, such as Figure 6 and Figure 7 As shown, each cantilever structure includes a surface S facing the cover plate 412, and the distance between the middle portion of the surface S of each cantilever structure and the cover plate 412 along the first direction is smaller than the distance between the other portions of the surface S of each cantilever structure and the cover plate 412. In this way, the speed at which each roller is separated from the cantilever structure in contact with it can be accelerated, thereby saving the unlocking time of the backup power box 40.

[0070] In some embodiments, such as Figure 3 As shown, the cover body 411 includes a left side plate 4112 and a right side plate 4113 arranged relatively along the second direction, and the left side plate 4112 and the right side plate 4113 are arranged adjacent to the cover plate 412 and the rear side plate 4111, respectively. One group of cantilever structures 421 is arranged between the left side plate 4112 and another group of cantilever structures 422, and the interval between one group of cantilever structures 421 and the left side plate 4112 is smaller than the interval between the two groups of cantilever structures. Another group of cantilever structures 422 is arranged between the right side plate 4113 and one group of cantilever structures 421, and the interval between the other group of cantilever structures 422 and the right side plate 4113 is smaller than the interval between the two groups of cantilever structures. In this way, on the basis of not affecting the unlocking or locking of the backup power box 40, each group of cantilever structures is arranged in the edge area of ​​the cover plate 412 as much as possible to avoid affecting the deployment of other components in the shell 410.

[0071] The backup power box 40 further includes a lock structure 430 , which is used to relatively fix or relatively separate the cover plate 412 and the cover body 411 , thereby locking or unlocking the backup power box 40 .

[0072] like Figure 2 and Figure 3 As shown, the lock structure 430 includes a lock core 431 and a gear 432. The lock core 431 passes through the rear side plate 4111 of the cover body 411 and is coaxially driven with the gear 432, and is rotatably connected with the rear side plate 4111 of the cover body 411. The rear side plate 4111 of the cover body 411 is arranged adjacent to the cover plate 412. In some embodiments, the lock core 431 passes through the shaft hole of the gear 432, the diameter of the lock core 431 is equal to the aperture of the shaft hole of the gear 432, and the length of the lock core 431 along the third direction is greater than the tooth width of the gear 432. In some embodiments, one end face of the lock core 431 also includes a fixed shaft, which passes through the shaft hole of the gear 432, the diameter of the fixed shaft is equal to the aperture of the shaft hole of the gear 432, and the length of the fixed shaft along the third direction is greater than or equal to the tooth width of the gear 432.

[0073] like Figure 2 and Figure 3As shown, the lock structure 430 further includes a connecting rod assembly 433, which is used to be accommodated in the housing 410. The connecting rod assembly 433 is arranged between the gear 432 and the cover plate 412 along the first direction, and the connecting rod assembly 433 is meshed with the gear 432. The size of each end of the connecting rod assembly 433 is less than or equal to the interval between the other end A2 of one cantilever structure of each set of cantilever structures and the other end A2 of another cantilever structure 422b.

[0074] In one example, the connecting rod assembly 433 includes three connecting rods, such as Figure 8 and Fig. 9 As shown, the connecting rod assembly 433 includes a connecting rod 4331, another connecting rod 4333, and another connecting rod 4332, the other connecting rod 4332 is used to fix the connecting rod 4331 and the other connecting rod 4332, and the other connecting rod 4332 includes a plurality of through holes T1 penetrating along the first direction, and the plurality of through holes T1 are arranged at intervals along the second direction. Each through hole T1 of the connecting rod assembly 433 is used to be embedded in the teeth of the gear 432. In other words, the size of each through hole T1 of the connecting rod assembly 433 along the second direction is greater than or equal to the tooth thickness of the gear 432, and the size of each through hole T1 of the connecting rod assembly 433 along the third direction is greater than or equal to the tooth width of the gear 432. In this way, the gear 432 can be prevented from falling off the connecting rod assembly 433, so that the gear 432 and the connecting rod assembly 433 are always meshed.

[0075] In this example, one end C of a connecting rod 4331 11 The dimension along the third direction is less than or equal to the distance between the other end A2 of one cantilever structure 421a and the other end A2 of another cantilever structure 421b of the set of cantilever structures 421. 32 The dimension along the third direction is less than or equal to the distance between the other end A2 of one cantilever structure 422a of another cantilever structure 422 and the other end A2 of another cantilever structure 422b. In this way, when the lock cylinder 431 is twisted, the gear 432 is engaged with the connecting rod assembly 433 as the lock cylinder 431 rotates, so that the connecting rod assembly 433 moves along the second direction and disengages from each cantilever structure group.

[0076] In addition, if Figure 8 and Fig. 9 As shown, another connecting rod 4332 is used to fix a connecting rod 4331 and another connecting rod 4332, specifically including: one end C of another connecting rod 4332 21 Used to connect the other end C of a connecting rod 4331 12 , the other end C of the other connecting rod 4332 22 Used to connect one end C of another connecting rod 4333 31 .

[0077] In some embodiments, the distance between one connecting rod 4331 and the cover plate 412 and the distance between another connecting rod 4333 and the cover plate 412 are respectively smaller than the distance between the other connecting rod 4332 and the cover plate 412. In this way, during the unlocking or locking process of the backup power box 40, on the one hand, one connecting rod 4331 and the other connecting rod 4332 can absorb the deformation along the first direction, thereby improving the strength of the connecting rod assembly 433, thereby reducing the torque of twisting the lock cylinder 431 and improving the unlocking efficiency or locking efficiency of the backup power box 40. On the other hand, the deformation of the other connecting rod 4332 along the first direction can be reduced, thereby improving the meshing efficiency of the other connecting rod 4332 and the gear 432.

[0078] In some embodiments, such as Figure 8 and Fig. 9 As shown, the interval between each end of the other connecting rod 4332 and the cover plate 412 is smaller than the interval between the middle portion of the other connecting rod 4332 and the cover plate 412. In this way, each end of the other connecting rod 4332 can absorb the deformation along the first direction, further improving the meshing efficiency of the other connecting rod 4332 and the gear 432.

[0079] In some embodiments, the size of each through hole T1 of the connecting rod assembly 433 decreases along the direction in which the connecting rod assembly 433 moves away from the gear 432. Fig.10 As shown, the size of each through hole T1 of the connecting rod assembly 433 gradually decreases and then stabilizes at a constant value along the direction in which the connecting rod assembly 433 is away from the gear 432. The constant value is greater than or equal to the tooth thickness of the gear 432. In this way, the meshing effect of the teeth of the gear 432 and each through hole T1 of the connecting rod assembly 433 can be improved, that is, the meshing efficiency of the teeth of the gear 432 and each through hole T1 of the connecting rod assembly 433 can be improved.

[0080] Exemplarily, another connecting rod 4332 is fixedly connected to one connecting rod 4331 and another connecting rod 4333 through connecting pieces, such as screws, bolts, nuts, etc.

[0081] In another example, the connecting rod assembly 433 includes a connecting rod, which can be an integrated structure of the connecting rod 4331, another connecting rod 4333, and another connecting rod 4332 described above. In this example, the size of each end of the connecting rod along the third direction is less than or equal to the distance between the other end A2 of one cantilever structure of each group of cantilever structures and the other end A2 of another cantilever structure. In this way, in the process of twisting the lock cylinder 431, the gear 432 engages with the connecting rod assembly 433 as the lock cylinder 431 rotates, so that the connecting rod assembly 433 moves along the second direction and disengages from each group of cantilever structures. For the description of other structures of a connecting rod of the connecting rod assembly 433 in this example, reference can be made to the relevant description above, which will not be repeated here.

[0082] In another example, the connecting rod assembly 433 includes two connecting rods. In this example, one of the two connecting rods of the connecting rod assembly 433 is the connecting rod 4331 described above, and the other connecting rod is an integral structure of the other connecting rod 4333 described above and the other connecting rod 4332. Alternatively, one of the two connecting rods of the connecting rod assembly 433 is the other connecting rod 4333 described above, and the other connecting rod is an integral structure of the one connecting rod 4331 described above and the other connecting rod 4332. In this way, during the process of twisting the lock cylinder 431, the gear 432 engages with the connecting rod assembly 433 as the lock cylinder 431 rotates, so that the connecting rod assembly 433 moves in the second direction and disengages from each group of cantilever structures. For the description of other structures of the two connecting rods of the connecting rod assembly 433 in this example, reference can be made to the relevant description above, which will not be repeated here.

[0083] In some embodiments, the size of each end of the connecting rod assembly 433 along the third direction is smaller than the size of the middle portion of the connecting rod assembly 433. For example, one end C of a connecting rod 4331 of the connecting rod assembly 433 along the third direction is smaller than the size of the middle portion of the connecting rod assembly 433. 11 and the other end C of the other connecting rod 4333 of the connecting rod assembly 433 32 The sizes of the connecting rod assembly 433 are respectively smaller than the sizes of other parts of the connecting rod assembly 433. In this way, the strength of the connecting assembly 433 can be improved.

[0084] The lock structure 430 also includes two groups of rollers, and each end of the connecting rod assembly 433 is used to roll and connect a group of rollers. Each group of rollers includes two rollers, and the axis of each roller is parallel to the third direction. Each group of rollers is arranged between two cantilever structures of a group of cantilever structures, and each roller of each group of rollers contacts the surface of one cantilever structure of the group of cantilever structures facing the cover plate 412.

[0085] like Figure 2 , Figure 3 and Figure 8 As shown, the two groups of rollers include a group of rollers 434 and another group of rollers 435. One end of the connecting rod assembly 433 is like one end of a connecting rod 4331. 11 Used to roll and connect a group of rollers 434, the other end of the connecting rod assembly 433 is like one end C of another connecting rod 4333 32 The rollers 434 are connected to the other rollers 435. The rollers 434 include a roller 434a and another roller 434b, and the rollers 435 include a roller 434a and another roller 434b. The rollers 434 are arranged between a cantilever structure 421a and another cantilever structure 421b of the cantilever structure 421. The rollers 434a of the rollers 434 are in contact with the surface of the cantilever structure 421a of the cantilever structure 421 facing the cover plate 412. Fig.11 As shown, another roller 434b of the set of rollers 434 contacts the surface S of another cantilever structure 421b of the set of cantilever structures 421 facing the cover plate 412. In addition, another set of rollers 435 is arranged between one cantilever structure 422a of another set of cantilever structures 422 and another cantilever structure 422b, and one roller 435a of another set of rollers 435 contacts the surface S of one cantilever structure 422a of another set of cantilever structures 422 facing the cover plate 412, as shown in FIG. Fig.11 and Fig.12 As shown, another roller 435 b of another group of rollers 435 is in contact with another cantilever structure 422 b of another group of cantilever structures 422 facing the surface S of the cover plate 412 .

[0086] In this way, Fig.13 As shown, when the lock core 431 is twisted counterclockwise or clockwise, the lock core 431 drives the gear 432 to rotate, and the gear 432 engages with the connecting rod assembly 433 to move the connecting rod assembly 433 in the second direction. At the same time, each group of rollers at both ends of the connecting rod assembly 433 can roll along the cantilever structure toward the surface of the cover plate 412, so that each group of rollers is separated from the cantilever structure toward the surface of the cover plate 412 in the second direction. Since the size of each end of the connecting rod assembly 433 is less than or equal to the interval between the other end A2 of one cantilever structure of each group of cantilever structures and the other end A2 of another cantilever structure, when the cover plate 412 is pulled in the first direction, the connecting rod assembly 433 can be separated from each group of cantilever structures in the first direction, so that the cover plate 412 is separated from the cover body 411, and the backup power box 40 is unlocked.

[0087] In addition, after the cover plate 412 is buckled into the opening of the cover body 411, the lock core 431 is twisted clockwise or counterclockwise, and the lock core 431 drives the gear 432 to rotate, and the gear 432 is engaged with the connecting rod assembly 433 to move the connecting rod assembly 433 in the opposite direction of the second direction. Since each group of rollers is arranged between two cantilever structures of a group of cantilever structures, the connecting rod assembly 433 can drive each group of rollers at both ends thereof to move in the opposite direction of the second direction, so that each group of rollers re-contacts the surface of the cantilever structure facing the cover plate 412. Therefore, each group of rollers can be clamped between the two cantilever structures of each group of cantilever structures, so that the cover plate 412 and the cover body are re-fixed, and the backup power box 40 is locked.

[0088] The backup power box 40 provided in the embodiment of the present application realizes unlocking or locking of the backup power box 40 through the meshing transmission of the gear 432 and the connecting rod assembly 433 and the rolling transmission of the roller and the surface of the cantilever structure. On the one hand, since the friction force of the meshing transmission and the rolling transmission is relatively small, the torque of twisting the lock core 431 is relatively small, thereby saving the time for unlocking or locking the backup power box 40 and improving the unlocking efficiency or locking efficiency of the backup power box 40. On the other hand, the structure for unlocking or locking the backup power box 40 is simple and occupies less space, thereby improving the space utilization of the backup power box 40. Furthermore, the performance of the backup power box 40 is improved.

[0089] It should be noted that the counterclockwise direction and the clockwise direction involved in the embodiment of the present application are relative to the outside of the backup power box 40.

[0090] In some embodiments, the diameter of each roller of a group of rollers 434 is less than or equal to the distance between a group of cantilever structures 421 and the left side plate 4112, and the diameter of each roller of another group of rollers 435 is less than or equal to the distance between another group of cantilever structures 422 and the right side plate 4113. In this way, the reliability of unlocking and locking the backup power box 40 can be increased.

[0091] In some embodiments, the two rollers of each roller group are coaxially driven. Figure 8 and Fig. 9 As shown, the lock structure 430 further includes a connecting shaft 436 and another connecting shaft 437, and the axial direction of the connecting shaft 436 and the axial direction of the other connecting shaft 437 are respectively parallel to the axial direction of the lock core 431. In addition, a group of rollers 434 is rollingly connected to one end of the connecting rod assembly 433 through a connecting shaft 436, and another group of rollers 434 is rollingly connected to the other end of the connecting rod assembly 433 through another connecting shaft 437.

[0092] In some embodiments, the diameter of each roller of each group of rollers is less than or equal to the size of each cantilever structure of a group of cantilever structures along the second direction, and less than the size of each cantilever structure of a group of cantilever structures along the first direction. For example, the diameter of each roller of a group of rollers 434 is less than or equal to the size of each cantilever structure of a group of cantilever structures 421 along the second direction, and less than the size of each cantilever structure of a group of cantilever structures 421 along the first direction. In addition, the diameter of each roller of another group of rollers 435 is less than or equal to the size of each cantilever structure of another group of cantilever structures 422 along the second direction, and less than the size of each cantilever structure of another group of cantilever structures 422 along the first direction. In this way, each group of rollers occupies a smaller space, so that the space in the backup box 40 can be used to deploy other components.

[0093] In some embodiments, the interval between the two rollers in each group of rollers is greater than or equal to the interval between the other end of one cantilever structure and the other end of another cantilever structure in a group of cantilever structures.

[0094] For example, the interval between one roller 434a and another roller 434b of a group of rollers 434 is greater than the interval between the other end A2 of one cantilever structure 421a and the other end A2 of another cantilever structure 421b of a group of cantilever structures 421. In other words, along the first direction, the projection of one roller 434a of a group of rollers 434 is located within the surface projection of one cantilever structure 421a of a group of cantilever structures 421 toward the cover plate 412, and along the first direction, the projection of another roller 434b of a group of rollers 434 is located within the surface projection of another cantilever structure 421b of a group of cantilever structures 421 toward the cover plate 412. In this way, when the backup power box 40 is locked, when the cover plate 412 is pulled along the first direction, the group of rollers 434 can block the group of cantilever structures 421 from moving along the first direction, thereby increasing the reliability of locking the backup power box 40.

[0095] For another example, the distance between one roller 435a of another group of rollers 435 and another roller 435b is greater than the distance between the other end A2 of one cantilever structure 422a of another group of cantilever structures 422 and the other end A2 of another cantilever structure 422b. In other words, the projection of one roller 435a of another group of rollers 435 along the first direction is located within the surface projection of one cantilever structure 422a of another group of cantilever structures 422 toward the cover plate 412, and the projection of another roller 435b of another group of rollers 435 along the first direction is located within the surface projection of another cantilever structure 422b of another group of cantilever structures 422 toward the cover plate 412. In this way, when the backup power box 40 is locked, when the cover plate 412 is pulled along the first direction, the other group of rollers 435 can block the other group of cantilever structures 422 from moving along the first direction, thereby increasing the reliability of locking the backup power box 40.

[0096] In some embodiments, such as Figure 2 and Figure 3 As shown, the backup power box 40 further includes at least one support 440, each support 440 is used to be fixedly connected to the rear side plate 4111, each support 440 includes a mounting hole penetrating along the second direction, and each of the two connecting rods passes through a mounting hole of a support 440. In this way, each support 440 can guide one of the two connecting rods to move along the second direction, reduce the deformation of each of the two connecting rods along the first direction or the third direction, and thus increase the service life of the backup power box 40.

[0097] In some embodiments, such as Figure 2 and Figure 3As shown, the backup power box 40 also includes a stopper 450, which is arranged between the connecting rod assembly 433 and the cover plate 412, and the stopper 450 is used to fix the connection to the rear side plate 4111. Among them, the projection of the stopper 450 along the first direction overlaps with the projection of the gear 432, and the distance between the stopper 450 and the connecting rod assembly 433 along the first direction is smaller than the distance between the stopper 450 and the cover plate 412. In this way, during the transportation of the backup power box 40, if the backup power box 40 collides, the stopper 450 can reduce the degree of bending of the connecting rod assembly 433 in the direction toward the cover plate 412, so that the connecting rod assembly 433 and the gear 432 can be meshed and the meshing efficiency is high. In addition, the reliability of unlocking and locking the backup power box 40 is improved.

[0098] For example, Fig.14 As shown, the stopper 450 includes a fixed plate 451 and a stopper 452 connected to each other, the fixed plate 451 is arranged opposite to the rear side plate 4111, and the fixed plate 451 is used to fix the rear side plate 4111. The stopper 452 is arranged opposite to the cover plate 412, and the distance between the stopper 452 and the connecting rod assembly 433 along the first direction is smaller than the distance between the stopper 450 and the cover plate 412. In this way, during the transportation of the backup power box 40, if the backup power box 40 collides, the stopper 452 can prevent the connecting rod assembly 433 from bending in the direction toward the cover plate 412, so that the reliability of unlocking and locking the backup power box 40 is higher.

[0099] In some embodiments, such as Fig.14 The stopper 450 shown is a sheet metal part. In other words, the stopper 450 is formed by folding a metal sheet.

[0100] In some embodiments, the size of the stopper 450 along the third direction is greater than or equal to the size of the connecting rod assembly 433 , so that the stopper 450 can prevent the connecting rod assembly 433 from bending in the direction toward the cover plate 412 .

[0101] In some embodiments, the stopper 450 includes at least one through hole T2 penetrating along the first direction, and each through hole T2 is used to embed a group of connecting pillars described below, thereby achieving connection between the stopper 450 and the plastic pad 460 .

[0102] In some embodiments, such as Figure 2 and Figure 3 As shown, the backup power box 40 further includes a plastic pad 460, which is arranged between the connecting rod assembly 433 and the stopper 450. In this way, the plastic pad 460 can prevent the stopper 450 from dropping metal powder and thus affecting the operation of other components in the backup power box 40.

[0103] In some embodiments, the plastic pad 460 and the stopper 450 are fixedly connected by at least one set of connecting columns. Figures 15 to 17 As shown, the plastic pad 460 includes a side surface 461 facing the stopper 450, and one end of each group of connecting posts P is used to fix and connect the side surface 461 of the plastic pad. Fig.17 As shown, the other end of each group of connection pillars P is used to pass through a through hole T2 of the limiting member 450 and be fixed to the limiting member 450 .

[0104] In some embodiments, each group of connecting columns includes a plurality of connecting columns P, and the plurality of connecting columns P of each group of connecting columns are arranged at intervals along the circumference of a through hole T2 of the stopper 450. The distance between the other end of each connecting column P and the central axis of a through hole T2 of the stopper 450 is greater than or equal to the radius of a through hole T2 of the stopper 450. In this way, after the other end of the plurality of connecting columns P of each group of connecting columns passes through a through hole T2 of the stopper 450, it can move in a radial direction away from the center of the through hole T2 of the stopper 450, so that the plastic pad 460 and the stopper 450 are fixedly connected. In addition, the assembly process of the plastic pad 460 and the stopper 450 is simplified.

[0105] Exemplarily, each connecting column P is made of plastic material, and each connecting column P and the plastic pad 460 are an integrated structure. In this way, the assembly process of the plastic pad 460 and each connecting column P can be omitted, saving the production cost of the backup power box 40.

[0106] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A backup power box, characterized in that: The backup power box comprises: A housing, a lock core, a gear, and two groups of cantilever structures, wherein the housing comprises a cover body and a cover plate, the cover body comprises an opening along a first direction, the cover plate is used to cover the opening, the lock core passes through a side plate of the cover body and is coaxially driven with the gear, the two groups of cantilever structures are arranged at intervals along a second direction, each group of cantilever structures comprises two cantilever structures arranged at intervals along the axial direction of the lock core, one end of each cantilever structure is used to be fixedly connected to one side surface of the cover plate, and the other end of each cantilever structure is arranged at intervals from the one side surface along the first direction; A connecting rod assembly and two groups of rollers, wherein the connecting rod assembly is arranged between the gear and the cover plate, and the connecting rod assembly is meshed with the gear, each end of the connecting rod assembly is used for rolling connection with a group of rollers, each group of rollers is arranged between two cantilever structures of a group of cantilever structures, each group of rollers includes two rollers, each roller axis is parallel to the lock core axis, and each roller of each group of rollers contacts with a surface of one cantilever structure of a group of cantilever structures facing the cover plate; The distance between the other end of one cantilever structure in each group of cantilever structures and the other end of another cantilever structure along the axial direction of the lock core is smaller than the distance between one end of the one cantilever structure and one end of the other cantilever structure, and is greater than or equal to the dimension of each end of the connecting rod assembly along the axial direction of the lock core.

2. The backup power box according to claim 1, characterized in that: The backup power box further includes a limiting member, which is arranged between the connecting rod assembly and the cover plate, and is used to fix the one side plate, wherein: The projection of the limiting member along the first direction overlaps with the projection of the gear; Along the first direction, a distance between the limiting member and the connecting rod assembly is smaller than a distance between the limiting member and the cover plate.

3. The backup power box according to claim 2, characterized in that: The size of the limiting member along the axial direction of the lock core is greater than or equal to the size of the connecting rod assembly.

4. The backup power box according to claim 2, characterized in that: The backup power box also includes: A plastic pad and at least one group of connecting columns, wherein the plastic pad is arranged between the connecting rod assembly and the limiting member, one end of each group of connecting columns is used to fix a side surface of the plastic pad, and the other end of each group of connecting columns is used to pass through and be fixed to the limiting member.

5. The backup power box according to claim 4, characterized in that: The stopper comprises at least one through hole penetrating along the first direction, each group of the connecting columns comprises a plurality of connecting columns, and the plurality of connecting columns of each group of the connecting columns are arranged at intervals along the circumference of one of the through holes of the stopper, wherein: The distance between the other end of each of the connecting columns and the central axis of one of the through holes of the limiting member is greater than or equal to the radius of the one through hole of the limiting member.

6. The backup power box according to claim 1, characterized in that: The connecting rod assembly comprises three connecting rods, one end of each connecting rod of two connecting rods of the three connecting rods is used for rolling connection with a group of rollers, another connecting rod is used for connecting the two connecting rods, and the distance between each connecting rod of the two connecting rods and the cover plate is smaller than the distance between the other connecting rod and the cover plate, wherein: The other connecting rod comprises a plurality of through holes penetrating along the first direction, the plurality of through holes are arranged at intervals along the second direction, and each of the through holes of the other connecting rod is used to be embedded in the teeth of the gear.

7. The backup power box according to claim 6, characterized in that: The size of each through hole of the other connecting rod decreases along the direction of the other connecting rod away from the gear.

8. The power backup box according to claim 6, characterized in that: The distance between each end of the other connecting rod and the cover plate is smaller than the distance between the middle portion of the other connecting rod and the cover plate.

9. The backup power box according to claim 6, characterized in that: The backup power box also includes at least one support, each of which is used to be fixedly connected to one of the side panels, and each of the supports includes a mounting hole that penetrates along the second direction, and each of the two connecting rods passes through the mounting hole of one of the supports.

10. The backup power box according to claim 1, characterized in that: The dimension of each end of the connecting rod assembly along the axial direction of the lock cylinder is smaller than the dimension of the middle portion of the connecting rod assembly.

11. The backup power box according to claim 1, characterized in that: The two rollers of each group of rollers are coaxially driven, and the diameter of each roller of each group of rollers is smaller than or equal to the size of each cantilever structure of a group of cantilever structures along the second direction, and smaller than the size of each cantilever structure of a group of cantilever structures along the first direction.

12. The backup power box according to claim 1, characterized in that: The interval between the two rollers in each group of rollers is greater than or equal to the interval between the other end of one of the cantilever structures in a group of the cantilever structures and the other end of another cantilever structure.

13. The backup power box according to claim 1, characterized in that: Along the first direction, a distance between a middle portion of a surface of each cantilever structure facing the cover plate and the cover plate is smaller than a distance between other portions of the surface of each cantilever structure facing the cover plate and the cover plate.

14. The backup power box according to any one of claims 1 to 13, characterized in that: The cover body also includes another side plate, which is arranged adjacent to the one side plate, a group of cantilever structures is arranged between the other side plate and another group of cantilever structures, and the spacing between the group of cantilever structures and the other side plate is smaller than the spacing between the two groups of cantilever structures.

15. A photovoltaic power generation system, characterized in that: The photovoltaic power generation system includes a photovoltaic module, a photovoltaic inverter and a backup power box as described in any one of claims 1 to 14, which are electrically connected in sequence. The photovoltaic inverter is used to convert the direct current output by the photovoltaic module into alternating current and input it into the backup power box. The output end of the backup power box is used to connect to an AC power grid or a load.

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