Power battery box

Abstract

The present invention provides a power battery box, which relates to the field of new energy battery technology and includes a box body and a supporting walking mechanism. The supporting walking mechanism is installed at the bottom of the box body and includes support legs and a lifting wheel mechanism. The lifting wheel mechanism includes a drive transmission assembly, a walking bracket, and a walking wheel installed at the bottom of the walking bracket. The drive transmission assembly is fixed to the bottom wall of the box body and connected to the walking bracket, and is used to drive the walking bracket to rise and fall relative to the box body so that the walking wheel rises to a first position or falls to a second position. When the walking wheel is in the first position, the bottom surface height of the walking wheel is not lower than the bottom surface height of the supporting legs. When the walking wheel is in the second position, the bottom surface height of the walking wheel is lower than the bottom surface height of the supporting legs. The present invention realizes flexible switching between the mobile and fixed states of the power battery box by configuring the supporting legs and the lifting wheel mechanism, taking into account the smoothness and fluidity of the power battery box when moving and the support stability when fixed, and is easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a power battery box. Background Art

[0002] With the rapid development of new energy technologies, power battery systems, as the core part of new energy equipment, have been widely used in many fields such as electric vehicles, energy storage systems, and mobile devices. The power battery system is a complex system with a highly modular design. The battery cell is the smallest unit of the power battery system, generally a lithium-ion cell group; multiple battery cells are combined together in series or parallel to form a standardized battery module; the power battery box accommodates one or more battery modules and integrates the battery management system (BMS) and the power distribution system to achieve status monitoring and balancing control of the one or more battery modules contained in the box. The power battery box is an integral unit that is ultimately installed on the equipment (such as electric vehicles, energy storage cabinets). In order to meet the needs of high energy density and high power output, the power battery box often needs to integrate a large number of battery modules to meet the equipment operation requirements. This causes the following problems in the use of the power battery box:

[0003] The power battery box that integrates a large number of battery modules is large in size and weight, making it extremely inconvenient to transport and install the power battery box in scenarios such as temporary energy storage sites or operations in remote areas. It must rely on professional equipment for handling and placement, which increases costs and operational complexity and limits the application flexibility of the battery box.

[0004] Although some existing technologies have universal wheels at the bottom of some power battery boxes, these wheels typically use a brake pad locking mechanism that mechanically compresses the wheel axle or wheel surface to achieve fixation. When the power battery box needs to be moved, the operator lifts the brake pad to move it. When it needs to be fixed, the brake pad is lowered back to contact the wheel surface or the ground. Although this design solves the problem of battery box movement to a certain extent, it still has many shortcomings in actual application:

[0005] (1) When the operator lifts and lowers the brake pads, he needs to operate each wheel one by one, which is complicated and inconvenient:

[0006] (2) During transportation, the brake pads are prone to falling and touching the ground due to vibration, which can cause the power battery box to brake passively. In addition to requiring frequent adjustments and increasing the complexity of operation, it can also cause damage to the battery modules and power distribution system in the box due to bumps;

[0007] (3) In a fixed state, although the universal wheel is locked by a brake pad, the contact area between the universal wheel and the ground is limited, and the weight distribution of the box is uneven in most cases. The power battery box is prone to shifting, thereby affecting the normal use and safety of the power battery box. This problem is particularly prominent in some working scenarios with high stability requirements, and cannot meet the actual application needs well. Summary of the Invention

[0008] The object of the present invention is to provide a power battery box to alleviate the above-mentioned technical problems existing in the prior art.

[0009] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0010] An embodiment of the present invention provides a power battery box, which includes a box body and a supporting walking mechanism:

[0011] The supporting walking mechanism is installed at the bottom of the box, including support legs and a lifting wheel mechanism, and the lifting wheel mechanism includes a driving transmission assembly, a walking bracket and a walking wheel installed at the bottom of the walking bracket; the driving transmission assembly is fixed to the bottom wall of the box and connected to the walking bracket, and is used to drive the walking bracket to rise and fall relative to the box so that the walking wheel rises to a first position or falls to a second position, when the walking wheel is in the first position, the bottom surface height of the walking wheel is not lower than the bottom surface height of the supporting legs, and when the walking wheel is in the second position, the bottom surface height of the walking wheel is lower than the bottom surface height of the supporting legs.

[0012] In an optional embodiment, the walking frame includes a movable carrying frame, two movable cross frames and two groups of hinged rods; the wheel frame of the walking wheel is fixedly mounted on the movable carrying frame, and the movable carrying frame has a first direction and a second direction perpendicular to each other in a horizontal plane, wherein: the two movable cross frames both extend along the second direction and are arranged above the movable carrying frame at intervals along the first direction; along the first direction, two groups of hinged rods are arranged at opposite ends of the movable carrying frame, and one end of each group of hinged rods is hinged to the corresponding end of the movable carrying frame, and the other end is hinged to a movable cross frame adjacent to the corresponding hinged rod;

[0013] The drive transmission assembly includes a bidirectional screw and a drive motor;

[0014] The bidirectional screw extends along the first direction and its two ends are rotatably mounted on the bottom wall of the box; the two movable cross frames are respectively threadedly sleeved on the outside of the two threaded rod sections of the bidirectional screw in opposite rotation directions;

[0015] The driving motor is fixed to the bottom wall of the box and its output shaft is connected to one end of the bidirectional screw, which is used to drive the bidirectional screw to rotate so that the two groups of movable cross frames move relative to or away from each other, thereby driving the two groups of hinged rods to rotate, and then driving the movable supporting frame to rise and fall relative to the box so that the walking wheel rises to the first position or falls to the second position.

[0016] In an optional embodiment, the drive transmission assembly includes two bidirectional screws spaced apart along the second direction, the output shaft of the drive motor is connected to the end of one of the bidirectional screws; the drive transmission assembly also includes a first transmission wheel and a second transmission wheel, the first transmission wheel and the second transmission wheel are respectively fixedly sleeved on the outside of one end of the two groups of bidirectional screws, and the first transmission wheel and the second transmission wheel are connected by a transmission belt or a transmission chain; each group of the movable cross frames is respectively and simultaneously threadedly sleeved on the two bidirectional screws;

[0017] And / or, each group of the hinged rods includes a first hinged rod and a second hinged rod arranged at intervals along the second direction of the movable supporting frame.

[0018] In an optional embodiment, a connecting groove is provided on the movable horizontal frame, a rotating shaft is fixed in the connecting groove, and one end of the hinge rod is inserted into the connecting groove and rotatably sleeved on the outside of the rotating shaft.

[0019] In an optional embodiment, the drive motor is fixedly mounted on a side wall of the support leg, a mounting hole is provided on the support leg, and an end portion of the bidirectional screw is rotatably mounted inside the mounting hole.

[0020] In an optional embodiment, a battery pack insulation isolation frame is fixedly installed inside the box;

[0021] The battery pack insulation isolation frame is provided with a plurality of battery compartments and a plurality of groups of limiting structures corresponding to each of the battery compartments; the openings of the plurality of battery compartments are all oriented toward the same side wall of the box body; the inner wall of each of the battery compartments is fixedly mounted with a contact connection terminal; the limiting structures are used to fix the battery cell to the corresponding battery compartment when a battery cell is fixed in the battery compartment, so that the contact connection terminal maintains contact with the electrode end of the battery cell;

[0022] A battery pack controller is provided on the outer wall of the box body, and the contact connection terminals in the multiple battery compartments are all connected to the battery pack controller circuit. The battery pack controller can control the circuit connection relationship between the multiple battery compartments; a charging and discharging plug is fixedly connected to the battery pack controller.

[0023] In an optional embodiment, the limiting structure includes a limiting housing and a locking plate;

[0024] With the opening of the battery compartment facing the front side of the box body, the limiting housing is provided at a position on the front side surface of the battery pack insulation isolation frame corresponding to the opening of each battery compartment. The limiting housing is a U-shaped member protruding toward the front side of the box body and extending vertically. A guide hole extending in the vertical direction is provided on the front side wall of the limiting housing.

[0025] The locking plate is vertically inserted into the interior of the limit shell, and a handle is fixed on the front side of the locking plate, and the handle passes through the guide hole; in a free state, the locking plate extends downward from the limit shell to block the front side of the opening corresponding to the battery compartment, driving the handle to slide upward along the guide hole, and can carry the locking plate to slide upward relative to the limit shell to open the opening corresponding to the battery compartment.

[0026] In an optional embodiment, the battery compartment opening faces the front side of the box body, and the box body includes a box door covering the openings of the multiple battery compartments; a plug-in rail is fixedly installed on the peripheral wall of the box body, and a plug-in interface is provided on the top of the plug-in rail. The box door is plugged into the inside of the plug-in rail from the plug-in interface, and a box door handle is provided on the top or outside of the box door.

[0027] In an optional embodiment, with the opening of the battery compartment facing the front side of the box body, the rear side wall of each battery compartment is provided with a ventilation hole; the power battery box also includes a heat dissipation rear cover fixedly mounted on the rear side wall of the box body and connected to each of the ventilation holes.

[0028] In an optional embodiment, a plurality of air inlets are provided on both the left and right walls of the heat dissipation rear cover, a heat dissipation fan is fixedly mounted on the bottom wall of the heat dissipation rear cover, a temperature sensor is mounted on the top inner wall of the heat dissipation rear cover, and an execution controller is mounted on the outer wall of the heat dissipation rear cover;

[0029] The temperature sensor and the cooling fan are both connected to the execution controller. The execution controller can receive temperature information transmitted by the temperature sensor and turn on or off the cooling fan according to the temperature information.

[0030] In particular, in the content of the present invention, the above-mentioned “and / or” means that the technical features before “and / or” and the technical features after “and / or” are set simultaneously or selectively.

[0031] The embodiments of the present invention can achieve at least the following beneficial effects:

[0032] The power battery box provided in the embodiments of the present invention utilizes a supporting travel mechanism comprised of support legs and a lifting wheel mechanism, enabling flexible switching between mobile and fixed states. Specifically, the lifting wheel mechanism controls the raising and lowering of the wheels via a drive transmission assembly, allowing the wheels to freely switch between a first position (where the wheel bottom is at least as high as the support leg bottom) and a second position (where the wheel bottom is lower than the support leg bottom). This design offers the following significant advantages over existing technologies:

[0033] (1) Efficiency and flexibility during movement: When the power battery box needs to be moved, the running wheels are lowered to the second position, and the power battery box is moved to the target position quickly and conveniently by utilizing the flexibility and load-bearing capacity of the running wheels; (2) Stability and safety during fixation: When the power battery box is moved to the designated position and needs to be fixed, the running wheels are raised to the first position and supported by the support legs. Since the support legs usually have good stability and load-bearing capacity, they can ensure the stability and safety of the power battery box during use.

[0034] The power battery box provided by the embodiment of the present invention takes into account both smoothness and fluidity when moving and stable support when fixed. This dual-mode switching design improves the adaptability of the power battery box in different application scenarios. At the same time, it also takes into account the operational convenience when switching between mobile and fixed states. It is particularly suitable for scenarios that require mobile deployment, such as temporary energy storage sites or operations in remote areas.

[0035] For other beneficial effects that can be achieved by the power battery box provided by the embodiment of the present invention, please refer to the detailed description of the specific implementation method part of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a schematic axonometric diagram of the overall structure of the power battery box provided by an embodiment of the present invention with the box door closed;

[0038] Figure 2 Schematic diagram of part of the structure of the power battery box provided by the embodiment of the present invention Figure 1 ;

[0039] Figure 3 A schematic diagram of the overall structure of the supporting walking mechanism in the power battery box provided in an embodiment of the present invention;

[0040] Figure 4 Schematic diagram of part of the structure of the power battery box provided by the embodiment of the present invention Figure 2 ;

[0041] Figure 5 This is a schematic axonometric diagram of the overall structure of the power battery box provided by an embodiment of the present invention with the box door open;

[0042] Figure 6 for Figure 5 A partial enlarged view of the setting method of the middle limit structure;

[0043] Figure 7 Schematic diagram of part of the structure of the power battery box provided by the embodiment of the present invention Figure 3 ;

[0044] Figure 8 A schematic diagram of the overall structure of the heat dissipation rear cover in the power battery box provided by the embodiment of the present invention Figure 1 ;

[0045] Figure 9 A schematic diagram of the overall structure of the heat dissipation rear cover in the power battery box provided by the embodiment of the present invention Figure 2 .

[0046] Icon: 1- cabinet; 101- docking rail; 1010- plug-in interface;

[0047] 2-support walking mechanism; 21-support leg; 22-lifting walking wheel mechanism; 3-drive transmission assembly; 31-bidirectional screw; 32-drive motor; 33-drive controller; 34-first transmission wheel; 35-second transmission wheel; 4-walking bracket; 41-movable bearing frame; 42-movable cross frame; 421-connecting groove; 422-rotating shaft; 43-hinged rod; 5-walking wheel; 6-walking wheel smooth maintenance mechanism; 61-dust collection box; 611-control panel; 62-suction fan; 63-suction channel;

[0048] 7 - Battery pack insulation isolation frame; 70 - Battery compartment; 71 - Contact connection terminal; 72 - Limiting structure; 721 - Limiting housing; 7210 - Guide hole; 722 - Locking plate; 7221 - Handle; 8 - Battery pack controller; 81 - Charge and discharge plug; 9 - Box door; 91 - Box door handle; 92 - High-voltage warning sign; 10 - Battery cell;

[0049] 11-heat dissipation rear cover; 111-air inlet; 12-cooling fan; 121-net plate; 13-temperature sensor; 14-execution controller. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0052] It should be noted that like reference numerals and letters denote similar items in the drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0053] In the description of the present invention, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and should not be construed as indicating or implying relative importance.

[0054] Furthermore, the terms "horizontal" and "vertical" do not imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0055] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0057] This embodiment provides a power battery box, referring to Figures 1 to 3 The power battery box includes a box body 1 and a supporting walking mechanism 2. Figures 1 to 3 As shown, the supporting walking mechanism 2 is installed at the bottom of the box body 1, and specifically includes support legs 21 and a lifting wheel mechanism 22. The lifting wheel mechanism 22 includes a driving transmission assembly 3, a walking bracket 4 and a wheel 5 installed at the bottom of the walking bracket 4; the driving transmission assembly 3 is fixed to the bottom wall of the box body 1 and is connected to the walking bracket 4, and is used to drive the walking bracket 4 to rise and fall relative to the box body 1 so that the wheel 5 rises to the first position or falls to the second position. When the wheel 5 is in the first position, the bottom height of the wheel 5 is not lower than the bottom height of the supporting legs 21. When the wheel 5 is in the second position, the bottom height of the wheel 5 is lower than the bottom height of the supporting legs 21. Among them, the wheel 5 can be a directional wheel structure with a certain direction, or it can be a universal wheel structure with an uncertain direction. In order to facilitate the operator's movement, a universal wheel structure is preferably used. The number of support legs 21 and the number of wheels 5 are designed according to the specific arrangement angle, preferably as follows Figures 1 to 3 As shown, four are designed for each, and two, three or more can also be designed, with the ability to stably support the box body 1 as a design factor; the number of support legs 21 and the number of running wheels 5 can be the same or different.

[0058] The power battery box provided in this embodiment utilizes a supporting travel mechanism 2 comprising support legs 21 and a lifting wheel mechanism 22, enabling flexible switching between a mobile and fixed state. Specifically, the lifting wheel mechanism 22 controls the raising and lowering of the wheels 5 via the drive transmission assembly 3, allowing the wheels 5 to freely switch between a first position (where the bottom surface of the wheels 5 is at least as high as the bottom surface of the support legs 21) and a second position (where the bottom surface of the wheels 5 is lower than the bottom surface of the support legs 21). This design offers the following significant advantages over existing technologies:

[0059] (1) Efficiency and flexibility during movement: When the power battery box needs to be moved, the running wheel 5 is lowered to the second position, and the power battery box is moved to the target position quickly and conveniently by utilizing the flexibility and load-bearing capacity of the running wheel 5; (2) Stability and safety during fixation: When the power battery box is moved to the designated position and needs to be fixed, the running wheel 5 is raised to the first position and supported by the support legs 21. Since the support legs 21 generally have good stability and load-bearing capacity, they can ensure the stability and safety of the power battery box during use.

[0060] The power battery box provided in this embodiment takes into account both smoothness and fluidity when moving and stable support when fixed. This dual-mode switching design improves the adaptability of the power battery box in different application scenarios. At the same time, it also takes into account the operational convenience when switching between mobile and fixed states. It is particularly suitable for scenarios that require mobile deployment, such as temporary energy storage sites or operations in remote areas.

[0061] In this embodiment, a variety of design options are available for the walking bracket 4 and the drive transmission assembly 3, including but not limited to using a longitudinal telescopic mechanism (electric push rod assembly, cylinder piston rod assembly, hydraulic cylinder piston rod assembly, etc.) to directly control the lifting and lowering of the walking bracket 4. However, this type of structure requires a high vertical distance between the bottom surfaces of the box body 1 of the power battery box to allow the telescopic mechanism to be installed. It is suitable for larger installation spaces, but is not applicable in some installation environments with limited space.

[0062] In this regard, continue to refer to Figures 1 to 3 , focus on Figure 3 In an optional implementation of this embodiment, the above-mentioned walking frame 4 specifically includes a movable supporting frame 41, two movable cross frames 42 and two sets of hinged rods 43; the wheel frame of the walking wheel 5 is fixedly mounted on the bottom surface or side surface (preferably the bottom surface) of the movable supporting frame 41, and the movable supporting frame 41 has a first direction and a second direction perpendicular to each other in the horizontal plane, wherein: the two movable cross frames 42 both extend along the second direction and are arranged above the movable supporting frame 41 at intervals along the first direction. Along the first direction, two sets of hinged rods 43 are arranged at opposite ends of the movable supporting frame 41, and one end of each set of hinged rods 43 is hinged to the corresponding end of the movable supporting frame 41, and the other end is hinged to a movable cross frame 42 adjacent to the corresponding hinged rod 43. The drive transmission assembly 3 specifically includes a bidirectional screw 31 and a drive motor 32; the bidirectional screw 31 extends along the first direction and its two ends are rotatably mounted on the bottom wall of the box body 1; the two movable cross frames 42 are respectively threadedly sleeved on the outside of the two threaded rod sections of the bidirectional screw 31 that rotate in opposite directions. The driving motor 32 is fixed to the bottom wall of the box body 1 and its output shaft is connected to one end of the bidirectional screw 31, which is used to drive the bidirectional screw 31 to rotate. When the bidirectional screw 31 rotates, the two sets of movable cross frames 42 will move relative to or away from each other, thereby driving the two sets of hinged rods 43 to rotate, and then driving the movable supporting frame 41 to rise and fall relative to the box body 1 to make the walking wheel 5 rise to the first position or fall to the second position.

[0063] In this alternative embodiment, the movable carrier 41 can be a solid plate or frame structure. The drive transmission assembly 3 can also include a drive controller 33 connected to the drive motor 32. The housing of the drive controller 33 can be fixedly mounted on the bottom surface of the housing 1 to control the start, stop, and steering of the drive motor 32. Alternatively, a control chip can be directly integrated within the drive motor 32, allowing an external controller to control the movement of the drive motor 32. This alternative embodiment does not require additional vertical space to install the longitudinal telescopic mechanism. The traveling frame 4 and the drive transmission assembly 3 only occupy a small vertical space, reducing the vertical distance requirement for the installation space. Furthermore, the drive transmission assembly 3 utilizes the drive motor 32 and the bidirectional screw 31 to precisely control the relative or opposite movement of the two sets of movable cross frames 42, thereby driving the rotation of the articulated rod 43 to achieve the raising and lowering of the movable carrier 41. This mechanism ensures that the running wheels 5 can accurately switch between the first position (raised) and the second position (lowered). The drive motor 32 can also be used to position the running wheels 5 at different heights according to the actual ground conditions to meet the needs of different working scenarios.

[0064] In this optional embodiment, further optionally, the drive transmission assembly 3 includes two bidirectional screws 31 spaced apart along the second direction, the output shaft of the drive motor 32 being connected to the end of one of the bidirectional screws 31; the drive transmission assembly 3 also includes a first transmission wheel 34 and a second transmission wheel 35, the first transmission wheel 34 and the second transmission wheel 35 being fixedly mounted on the outside of one end of the two sets of bidirectional screws 31, and the first transmission wheel 34 and the second transmission wheel 35 being connected by a transmission belt or a transmission chain; and each set of movable cross frames 42 being simultaneously threadedly mounted on the two bidirectional screws 31. In this optional embodiment, by providing two bidirectional screws 31 spaced apart along the second direction and utilizing the first transmission wheel 34 and the second transmission wheel 35 to cooperate with the transmission belt or the transmission chain, synchronous power transmission between the two bidirectional screws 31 is achieved. This design avoids the problems of uneven load or vibration that may be caused by a single screw, thereby significantly improving the smoothness of the transmission process.

[0065] Optionally, each set of hinged rods 43 includes a first hinged rod and a second hinged rod spaced apart along the second direction of the movable support frame 41. In this optional embodiment, the dual hinged rod design can better distribute the load and reduce stress concentration at a single hinge point, thereby improving the stability and durability of the overall structure. At the same time, the load is shared by the two hinged rods 43, thereby increasing the load-bearing capacity of the movable support frame 41.

[0066] Optionally, the movable cross frame 42 is provided with a connecting groove 421, in which a rotating shaft 422 is fixed. One end of the hinged rod 43 is inserted into the connecting groove 421 and is rotatably sleeved on the outside of the rotating shaft 422. The connecting groove 421 is provided on the bottom surface of the movable cross frame 42, and preferably extends through two opposite side surfaces of the movable cross frame 42 in the first direction to provide a larger movable space for the hinged rod 43. In this optional embodiment, one end of the hinged rod 43 is inserted into the connecting groove 421 and is rotatably sleeved on the outside of the rotating shaft 422, allowing the hinged rod 43 to rotate freely within the connecting groove 421. This design enables the hinged rod 43 to flexibly adapt to changes in different angles. This layout can further reduce the longitudinal installation space required for the walking frame 4.

[0067] Optionally, the drive motor 32 is fixedly mounted on the side wall of the support leg 21, and a mounting hole is provided on the support leg 21, and the end of the bidirectional screw 31 is rotatably mounted inside the mounting hole. In this optional embodiment, the drive motor 32 is fixedly mounted on the side wall of the support leg 21, which fully utilizes the space of the existing structure, reduces the need for additional mounting brackets or supports, and makes the overall structure more compact; by directly providing a mounting hole on the support leg 21, the end of the bidirectional screw 31 is rotatably mounted inside the mounting hole, which reduces the use of intermediate connectors, reduces the risk of failure due to loosening or failure of the connectors, and improves the stability and reliability of the system. In addition, by fixing the drive motor 32 on the side wall of the support leg 21 and providing a mounting hole on the support leg 21 to rotatably mount the end of the bidirectional screw 31, the supporting walking mechanism 2 is an integrated structure integrating the support leg 21 and the lifting wheel mechanism 22, which is convenient for disassembly, assembly, and maintenance.

[0068] In addition, during actual application, impurities such as yarn balls are easily adhered to the walking wheel 5, forming damping on the wheel surface of the walking wheel 5, affecting the high efficiency and smoothness during movement, and the space at the bottom of the box body 1 is narrow, making it difficult to effectively clean the walking wheel 5. In this regard, in an optional implementation manner of this embodiment, a walking wheel smoothness maintaining mechanism 6 is also provided, which walking wheel smoothness maintaining mechanism 6 includes a dust box 61, a control panel 611, a suction fan 62 and an air suction channel 63. The dust box 61 and the suction fan 62 are both fixed to the side wall of the box body 1, one end of the air suction channel 63 is connected to the air inlet 111 of the suction fan 62, and the other end of the air suction channel 63 extends to the bottom of the box body 1 and an air suction port is provided toward the bottom surface of the box body 1, and the air outlet of the suction fan 62 is connected to the inside of the dust box 61; the control panel 611 is provided on the surface of the dust box 61, and the control panel 611 is connected to the suction fan 62 for controlling the start or stop of the suction fan 62. In this optional embodiment, the suction port of the suction channel 63 extends to the bottom of the box body 1 and faces the bottom surface of the box body 1. When the running wheel 5 is in the first position (upward), the running wheel 5 is closer to the suction port of the suction channel 63. At this time, the suction fan 62 can be started to absorb impurities such as yarn balls adhering to the running wheel 5 into the dust box 61 to prevent the impurities from forming damping on the wheel surface, thereby ensuring the efficient and smooth movement of the running wheel 5 and improving the operating efficiency of the equipment; the dust box 61 is provided with a cleaning port and a cover covering the cleaning port to uniformly clean the impurities inside the dust box 61. This embodiment can realize the automatic cleaning function of the running wheel 5, reduce the complexity of cleaning the running wheel 5, ensure the smoothness of the running wheel 5 when rolling, and improve the efficient and smooth movement of the power battery box.

[0069] In addition, in the existing technology, most power battery boxes adopt an integral installation structure in which the battery module is fixed in the box body 1. The battery module and the battery cell 10 cannot be pulled out or replaced individually. When a battery module or battery cell 10 fails or requires maintenance, it is often necessary to cut off the power supply of the entire battery box and shut down for maintenance. This will cause the risk of service interruption for critical facilities such as medical equipment and data centers that require high uninterrupted power supply.

[0070] In this regard, refer to Figures 4 to 6In an optional implementation of the present embodiment, a battery pack insulating isolation frame 7 is fixedly installed inside the box body 1; the battery pack insulating isolation frame 7 is provided with a plurality of battery compartments 70 and a plurality of groups of limiting structures 72 corresponding to each battery compartment 70; the compartment openings of the plurality of battery compartments 70 are all facing the same side wall of the box body 1, and the inner wall of each battery compartment 70 is fixedly installed with a contact connection terminal 71, and the limiting structure 72 is used to fix the battery cell 10 to the corresponding battery compartment 70 when a battery cell 10 is fixed in the battery compartment 70, so that the contact connection terminal 71 maintains contact with the electrode end of the battery cell 10. A battery pack controller 8 is provided on the outer wall of the box body 1. The contact connection terminals 71 in the multiple battery compartments 70 are all circuit-connected to the battery pack controller 8. The battery pack controller 8 can control the circuit connection relationship (series or parallel) between the multiple battery compartments 70; a charge and discharge plug 81 is fixedly connected to the battery pack controller 8. A battery management system is provided inside the battery pack controller 8, which is responsible for monitoring and managing the charge and discharge process of the battery module formed by connecting each battery cell 10. The charge and discharge operations of the battery cells 10 inside the box body 1 are realized through the charge and discharge plug 81, ensuring the safe and efficient operation of the battery module.

[0071] In this optional embodiment, battery cells 10 can be respectively inserted into each battery compartment 70, and the inserted battery cells 10 are connected to form a battery module. Since each battery cell 10 can be independently installed and removed, the position of the battery cell 10 can be adjusted according to actual needs to adjust the power distribution method and energy storage situation. In the event of a fault, the corresponding battery cell 10 can also be taken out separately for inspection or replacement, which is more convenient for equipment maintenance.

[0072] Continue to refer to Figures 4 to 6In some optional implementations of this embodiment, the above-mentioned limiting structure 72 specifically includes a limiting shell 721 and a locking plate 722; with the opening of the battery compartment 70 facing the front side of the box body 1, the limiting shell 721 is arranged on the front side surface of the battery pack insulation isolation frame 7 at a position corresponding to the opening of each battery compartment 70, and the limiting shell 721 is a U-shaped part that protrudes toward the front side of the box body 1 and passes through from top to bottom, and a guide hole 7210 extending in the vertical direction is opened on the front side wall of the limiting shell 721. The locking plate 722 is vertically inserted into the interior of the limiting shell 721, and a handle 7221 is fixed on the front side of the locking plate 722, and the handle 7221 passes through the guide hole 7210; in the free state, the locking plate 722 extends downward from the limiting shell 721 to block the front side of the opening of the corresponding battery compartment 70, driving the handle 7221 to slide upward along the guide hole 7210, and can drive the locking plate 722 to slide upward relative to the limiting shell 721 to open the opening of the corresponding battery compartment 70. In this alternative embodiment, the handle 7221 is driven to slide upward along the guide hole, causing the locking plate 722 to slide upward relative to the limiting housing 721, thereby opening the corresponding battery compartment 70 and inserting the battery cell 10 into the corresponding battery compartment 70. The handle 7221 is then released, allowing the locking plate 722 to extend downward under its own weight and block the limiting housing 721 from the front side of the corresponding battery compartment 70 (or the handle 7221 is driven to return to its original position). At this point, the locking plate 722 abuts against the front surface of the battery cell 10, locking the battery cell 10 in the corresponding battery compartment 70 and applying a certain pressing force to the battery cell 10, ensuring that the contact terminals 71 in the battery compartment 70 maintain contact with the electrode ends of the battery cell 10. In particular, to facilitate operation, in this alternative embodiment, the handle 7221 is preferably a T-shaped handle, with the crossbar at its end being constrained to the front side of the limiting housing 721.

[0073] Continue to refer to Figures 4 to 6In some optional implementations of this embodiment, with the opening of the battery compartment 70 facing the front side of the box body 1, the box body 1 includes a box door 9 covering the openings of the multiple battery compartments 70; a plug-in rail 101 is fixedly mounted on the peripheral wall of the box body 1, and a plug-in port 1010 is provided at the top of the plug-in rail 101. The box door 9 is plugged into the plug-in port 101 through the plug-in port 1010. A box door handle 91 is provided on the top or outside of the box door 9. After each battery cell 10 is plugged into the corresponding battery compartment 70, the box door 9 is slid downward along the plug-in rail 101 using the box door handle 91, so that the box door 9 closes the opening on the front surface of the box body 1 of the power battery box, thereby closing the openings of each battery compartment 70 to protect the battery cells 10 installed inside the box body 1; when the position of the battery cell 10 needs to be adjusted or the battery cell 10 needs to be removed, the box door 9 is opened upward along the plug-in rail 101 using the box door handle 91 to perform the relevant operation. In this optional embodiment, the front opening of the box body 1 is sealed by the box door 9, effectively preventing external dust, moisture, and other impurities from entering the battery compartment 70, protecting the battery cells 10 from environmental factors. Furthermore, the upward and downward sliding box door 9 moves vertically when opening and closing, and does not extend to the sides or forward. This design makes the box body 1 more compact as a whole, making it suitable for installation in cabinets or other confined spaces. Furthermore, a high-voltage warning sign 92 can be fixed to the front surface of the box door 9 to remind staff to pay attention to safety.

[0074] Reference Figures 1 to 9 , focus on Figure 7 、 Figure 8 and Figure 9 In an optional implementation of this embodiment, the opening of the battery compartment 70 faces the front side of the box body 1, and the rear side wall of each battery compartment 70 is provided with a ventilation hole; the power battery box also includes a heat dissipation rear cover 11 fixedly mounted on the rear side wall of the box body 1 and connected to each ventilation hole.

[0075] In an alternative embodiment of this embodiment, multiple air inlets 111 are provided on both the left and right sides of the heat dissipation rear cover 11. A cooling fan 12 is fixedly mounted on the bottom wall of the heat dissipation rear cover 11. A temperature sensor 13 is mounted on the top inner sidewall of the heat dissipation rear cover 11. An actuator controller 14 is mounted on the outer sidewall of the heat dissipation rear cover 11. The temperature sensor 13 and the cooling fan 12 are both connected to the actuator controller 14, which receives temperature information transmitted by the temperature sensor 13 and activates or deactivates the cooling fan 12 based on the temperature information. The number of cooling fans 12 is not specifically limited; preferably, two or more are provided. The air outlet ends of the cooling fans 12 face the exterior of the heat dissipation rear cover 11, allowing the cooling fans 12 to remove hot air from the heat dissipation rear cover 11. The number of air inlets 111 provided on the left and right sides of the heat dissipation rear cover 11 is not specifically limited; preferably, the multiple air inlets 111 are arranged in a matrix along the left and right sides of the heat dissipation rear cover 11.

[0076] In this optional embodiment, the temperature inside the box 1 of the power battery box is continuously monitored by a temperature sensor 13, and the temperature signal is converted into an electrical signal. The temperature sensor 13 transmits the electrical signal to the signal conditioning circuit of the battery management system (BMS) in the execution controller 14. After amplification, filtering and other processing, the electrical signal is converted into a signal suitable for processing by the microcontroller. The microcontroller in the execution controller 14 compares the read temperature value with a preset temperature threshold. If the temperature value exceeds the set value, the microcontroller will trigger the heat dissipation control logic. The microcontroller generates a control instruction based on the temperature judgment result and sends the instruction to the drive circuit of the cooling fan 12 through the control signal line. After receiving the control instruction, the drive circuit activates the power supply circuit of the cooling fan 12, causing the cooling fan 12 to start working, thereby allowing external air to enter the cooling rear cover 11 through the air inlets 111 on the left and right side walls of the cooling rear cover 11, and then be carried out from the bottom wall of the cooling rear cover 11 by the cooling fan 12, so that the flow of air can achieve heat dissipation and cooling of the battery cells 10 in the box 1. The bottom wall of the heat dissipation rear cover 11 may be made of a mesh plate 121 provided with heat dissipation mesh holes to further increase the gas flow rate and thus improve the heat dissipation capacity.

[0077] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other; the above embodiments in this specification are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that: it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power battery box, characterized in that: The power battery box includes: Box (1); A supporting walking mechanism (2) is installed at the bottom of the box (1), comprising a supporting leg (21) and a lifting wheel mechanism (22), wherein the lifting wheel mechanism (22) comprises a driving transmission assembly (3), a walking bracket (4) and a walking wheel (5) installed at the bottom of the walking bracket (4); the driving transmission assembly (3) is fixed to the bottom wall of the box (1) and connected to the walking bracket (4), and is used to drive the walking bracket (4) to rise and fall relative to the box (1) so that the walking wheel (5) rises to a first position or falls to a second position, and when the walking wheel (5) is in the first position, the bottom surface height of the walking wheel (5) is not lower than the bottom surface height of the supporting leg (21); when the walking wheel (5) is in the second position, the bottom surface height of the walking wheel (5) is lower than the bottom surface height of the supporting leg (21); The walking bracket (4) includes a movable supporting frame (41), two movable cross frames (42) and two sets of hinged rods (43); the wheel frame of the walking wheel (5) is fixedly mounted on the movable supporting frame (41), and the movable supporting frame (41) has a first direction and a second direction perpendicular to each other in a horizontal plane. The driving transmission assembly (3) includes a bidirectional screw (31) and a driving motor (32), and the bidirectional screw (31) extends along the first direction and its two ends are rotatably mounted on the bottom wall of the box body (1). The two movable cross frames (42) are respectively threadedly sleeved on the outside of two threaded rod sections of the bidirectional screw (31) that rotate in opposite directions.

2. The power battery box according to claim 1, characterized in that: The two movable cross frames (42) both extend along the second direction and are spaced apart above the movable support frame (41) along the first direction; along the first direction, two groups of hinged rods (43) are arranged at opposite ends of the movable support frame (41), and one end of each group of hinged rods (43) is hinged to the corresponding end of the movable support frame (41), and the other end is hinged to a movable cross frame (42) close to the corresponding hinged rod (43); The driving motor (32) is fixed to the bottom wall of the box (1) and its output shaft is connected to one end of the bidirectional screw (31), and is used to drive the bidirectional screw (31) to rotate, so that the two groups of the movable cross frames (42) move relative to or away from each other, thereby driving the two groups of the hinged rods (43) to rotate, and then driving the movable supporting frame (41) to rise and fall relative to the box (1) so that the walking wheel (5) rises to the first position or falls to the second position.

3. The power battery box according to claim 2, characterized in that: The drive transmission assembly (3) includes two bidirectional screws (31) spaced apart along the second direction, and the output shaft of the drive motor (32) is connected to the end of one of the bidirectional screws (31); the drive transmission assembly (3) also includes a first transmission wheel (34) and a second transmission wheel (35), the first transmission wheel (34) and the second transmission wheel (35) are respectively fixedly sleeved on the outside of one end of the two groups of bidirectional screws (31), and the first transmission wheel (34) and the second transmission wheel (35) are connected to each other through a transmission belt or a transmission chain; each group of the movable cross frame (42) is respectively and simultaneously threadedly sleeved on the two bidirectional screws (31); And / or, each group of the hinged rods (43) comprises a first hinged rod and a second hinged rod arranged at intervals along the second direction of the movable carrier (41).

4. The power battery box according to claim 2, characterized in that: The movable horizontal frame (42) is provided with a connecting groove (421), a rotating shaft (422) is fixed in the connecting groove (421), and one end of the hinge rod (43) is inserted into the connecting groove (421) and rotatably sleeved on the outside of the rotating shaft (422).

5. The power battery box according to claim 2, characterized in that: The driving motor (32) is fixedly mounted on the side wall of the support leg (21); a mounting hole is provided on the support leg (21); and the end of the bidirectional screw (31) is rotatably mounted inside the mounting hole.

6. The power battery box according to any one of claims 1 to 5, characterized in that: A battery pack insulating isolation frame (7) is fixedly installed inside the box (1); The battery pack insulation isolation frame (7) is provided with a plurality of battery compartments (70) and a plurality of groups of limiting structures (72) corresponding to each of the battery compartments (70); the compartment openings of the plurality of battery compartments (70) are all oriented toward the same side wall of the box body (1); the inner wall of each battery compartment (70) is fixedly mounted with a contact connection terminal (71); the limiting structure (72) is used to fix the battery cell (10) to the corresponding battery compartment (70) when a battery cell (10) is fixed in the battery compartment (70), so that the contact connection terminal (71) maintains contact with the electrode end of the battery cell (10); A battery pack controller (8) is provided on the outer wall of the box body (1); the contact connection terminals (71) in the plurality of battery compartments (70) are all connected to the circuit of the battery pack controller (8); the battery pack controller (8) is capable of controlling the circuit connection relationship between the plurality of battery compartments (70); and a charge and discharge plug (81) is fixedly connected to the battery pack controller (8).

7. The power battery box according to claim 6, characterized in that: The limiting structure (72) comprises a limiting housing (721) and a locking plate (722); With the opening of the battery compartment (70) facing the front side of the box body (1), the limiting shell (721) is provided at a position corresponding to the opening of each battery compartment (70) on the front side of the battery pack insulation isolation frame (7), and the limiting shell (721) is a U-shaped member protruding toward the front side of the box body (1) and penetrating vertically, and a guide hole (7210) extending in the vertical direction is provided on the front side wall of the limiting shell (721); The locking plate (722) is vertically inserted into the interior of the limiting shell (721), and a handle (7221) is fixed on the front side of the locking plate (722), and the handle (7221) passes through the guide hole (7210); in a free state, the locking plate (722) extends downward from the limiting shell (721) to block the front side of the opening corresponding to the battery compartment (70), driving the handle (7221) to slide upward along the guide hole (7210), and can slide the locking plate (722) upward relative to the limiting shell (721) to open the opening corresponding to the battery compartment (70).

8. The power battery box according to claim 6, characterized in that: The opening of the battery compartment (70) faces the front side of the box body (1), and the box body (1) includes a box door (9) covering the openings of the plurality of battery compartments (70); a plug-in rail (101) is fixedly mounted on the peripheral wall of the box body (1), a plug-in interface (1010) is provided at the top end of the plug-in rail (101), and the box door (9) is plugged into the inside of the plug-in rail (101) through the plug-in interface (1010), and a box door handle (91) is provided on the top or outside of the box door (9).

9. The power battery box according to claim 6, characterized in that: With the opening of the battery compartment (70) facing the front side of the box body (1), a vent is provided on the rear side wall of each battery compartment (70); the power battery box further comprises a heat dissipation rear cover (11) fixedly mounted on the rear side wall of the box body (1) and in communication with each vent.

10. The power battery box according to claim 9, characterized in that: A plurality of air inlets (111) are provided on the left and right walls of the heat dissipation rear cover (11), a heat dissipation fan (12) is fixedly mounted on the bottom wall of the heat dissipation rear cover (11), a temperature sensor (13) is mounted on the top inner wall of the heat dissipation rear cover (11), and an execution controller (14) is mounted on the outer wall of the heat dissipation rear cover (11); The temperature sensor (13) and the cooling fan (12) are both connected to the execution controller (14), and the execution controller (14) is capable of receiving temperature information transmitted by the temperature sensor (13) and turning on or off the cooling fan (12) according to the temperature information.

Images