Battery box for electric four-wheel vehicle

Abstract

The application discloses a battery box of an electric four-wheeled vehicle and belongs to the field of electric four-wheeled vehicles. The battery box of the electric four-wheeled vehicle comprises a battery box body, a limiting shell is fixedly connected in the battery box body, a battery assembly is embedded in the limiting shell, first fixing holes are formed in the two side surfaces of the battery assembly, a first locking mechanism for clamping the first fixing holes is arranged in the battery box body, and groove blocks are fixedly connected to the two side surfaces of the battery box body. The worm, the worm wheel, the bidirectional screw rod, the moving block, the fixed block, the limiting rod, the sliding block, the first locking rod and the mounting shell are arranged to limit the first fixing holes, so that the battery assembly can be fixed in the limiting shell. According to the design, a user only needs to twist a knob, and multiple bolts do not need to be twisted, so that the installation efficiency is greatly improved. In addition, the self-locking property between the worm and the worm wheel prevents the first locking mechanism from being started by external force, so that the safety performance is improved.

Description

Technical Field

[0001] This invention relates to the field of electric four-wheeled vehicle technology, and more particularly to a battery box for an electric four-wheeled vehicle. Background Technology

[0002] Electric four-wheeled vehicles are four-wheeled mobility scooters powered by electricity. They are mostly used as sightseeing vehicles in parks, as well as mobility scooters for the elderly and disabled. The electric four-wheeled vehicles are driven by the battery system installed inside them. As the only power source of pure electric vehicles, the power battery system plays a crucial role in the whole vehicle and is a core component. In order to prevent the battery from being damaged by collisions during use, the battery system is usually placed in the battery box for protection.

[0003] Traditional battery boxes require the battery box to be first installed on the vehicle body with screws, then the battery is installed with screws, and finally the box cover needs to be fixed. This makes the entire installation process very cumbersome, and the process of tightening multiple screws takes a lot of time, greatly reducing installation efficiency. To address this, we have proposed a battery box for electric four-wheeled vehicles. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that the battery box needs to be installed on the vehicle body first with screws, then the battery needs to be installed with screws, and finally the box cover needs to be fixed, which makes the whole installation process very cumbersome and requires a lot of time to tighten multiple screws, greatly reducing the installation efficiency. Therefore, this invention proposes a battery box for electric four-wheeled vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electric four-wheeled vehicle battery box includes a battery box body. A limiting shell is fixedly connected inside the battery box body, and a battery assembly is embedded in the limiting shell. First fixing holes are provided on both sides of the battery assembly. A first locking mechanism for engaging the first fixing holes is provided inside the battery box body. Slot blocks are fixedly connected to both sides of the battery box body. A top cover assembly is provided above the slot blocks. The top cover assembly includes insert blocks slidably connected within the slot blocks. Protective covers are fixedly connected to the tops of the two insert blocks. A second fixing hole is provided in the middle of each insert block. A second locking mechanism for fixing the protective covers is linked to the first locking mechanism via a connecting component. A base is provided at the bottom of the battery box body. Two L-shaped strips are symmetrically fixedly connected to the top of the base. Mounting strips are fixedly connected to both sides of the battery box body. Two mounting strips slide within corresponding L-shaped strips. Each mounting strip has a fixing groove. A third locking mechanism for engaging the fixing grooves is also linked to the first locking mechanism.

[0007] Preferably, the first locking mechanism includes a worm gear rotatably connected to one side of the battery housing via a bearing. A worm wheel is meshed with the outer surface of the worm gear, and a bidirectional lead screw is fixedly connected to the axis of the worm wheel. Two moving blocks are symmetrically threaded onto the outer surface of the bidirectional lead screw. Two fixed blocks are fixedly connected inside the battery housing. Limit rods are fixedly connected between each fixed block and the inner wall of the battery housing. A slider is fixedly connected to one side of each moving block. The two sliders are slidably connected to the outer surface of the corresponding limit rods. A first locking rod is fixedly connected to the top of each moving block. One end of the first locking rod slides through the adjacent side wall of the limiting shell and engages with a suitable first fixing hole. A mounting shell is fixedly connected to one side of the battery housing, and the worm gear is rotatably connected to the mounting shell via a bearing.

[0008] Preferably, the connecting assembly includes an L-shaped rack fixedly connected to the top of the movable block, a connecting gear meshing with the bottom of the L-shaped rack, a rotating rod fixedly connected to the axis of each of the two connecting gears, the rotating rods being rotatably connected to one side wall of the battery box via bearings, and a circular gear fixedly connected to the outer surface of each rotating rod.

[0009] Preferably, the second locking mechanism includes a rectangular rack meshing with the top of a circular gear, four support blocks fixedly connected to one side of the battery box, a rectangular strip fixedly connected between two support blocks, a rectangular block fixedly connected to the top of each rectangular rack, two rectangular blocks slidably connected to the outer surface of the corresponding rectangular strip, and a second locking rod fixedly connected to one end of each rectangular rack. One end of each second locking rod slidably penetrates the adjacent sidewall of the slot block and engages with a suitable second fixing hole.

[0010] Preferably, the third locking mechanism includes a main bevel gear disk fixedly connected to the outer surfaces of the two worm gears. A secondary bevel gear disk is meshed with the outer surface of each main bevel gear disk. A threaded rod is fixedly connected to the shaft center of each secondary bevel gear disk. The threaded rod is rotatably connected to the mounting housing via bearings. A threaded block is threadedly connected to the outer surface of each threaded rod. A locking strip is fixedly connected to one side of each threaded block. One end of each locking strip slides through the adjacent sidewall of the L-shaped strip and engages with a suitable fixing groove. Rectangular grooves are provided on both sides of the mounting housing, and the locking strip slides within these rectangular grooves.

[0011] Preferably, mounting holes for screws are provided at all four corners of the base.

[0012] Preferably, the inner walls at the four corners of the battery box are provided with limiting grooves, and the bottom of the protective cover is symmetrically fixedly connected with four limiting strips, which are slidably connected in the corresponding limiting grooves.

[0013] Preferably, a knob is fixedly connected to one end of the worm gear, and the outer surface of the knob is provided with anti-slip texture.

[0014] Preferably, one side of the battery housing has a wire hole for the wire to pass through.

[0015] Compared with the prior art, the present invention provides a battery box for an electric four-wheeled vehicle, which has the following advantages:

[0016] 1. The battery box of this electric four-wheeled vehicle, through the arrangement of a worm gear, worm wheel, double-acting screw, moving block, fixing block, limiting rod, slider, first locking rod, and mounting shell, is used to limit the first fixing hole, thereby fixing the battery assembly inside the limiting shell. With this design, the user only needs to turn the knob, without having to turn multiple bolts, which greatly increases the installation efficiency. Moreover, the self-locking property between the worm gear and worm wheel prevents the first locking mechanism from being activated by external force, enhancing the safety performance.

[0017] 2. The battery box of this electric four-wheeled vehicle, through the setting of L-shaped rack, connecting gear, rotating rod and circular gear, can simultaneously drive the second locking mechanism to operate while the first locking mechanism fixes the battery assembly. Furthermore, through the mutual cooperation between the rectangular rack, support block, rectangular bar, rectangular block and the second locking rod, the second fixing hole is limited, thereby fixing the protective cover to the battery box body. This design can complete the installation of the battery assembly and the protective cover at the same time, which is very convenient.

[0018] 3. The battery box of this electric four-wheeled vehicle, through the arrangement of a main bevel gear disk, a secondary bevel gear disk, a threaded rod, a threaded block, a locking strip, and a rectangular groove, can drive the third locking mechanism to operate simultaneously when the first locking mechanism is activated. This mechanism is used to limit the fixing groove, thereby completing the fixation between the base and the battery box. This structure can fix the battery box, battery components, and protective cover at the same time. When the battery box is damaged and needs to be disassembled, it can be quickly removed, which is convenient and quick, and enhances the linkage between the mechanisms.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. Users of this invention only need to turn the knob to fix the battery box, battery assembly and protective cover at the same time, which greatly increases the installation efficiency and eliminates the need to turn multiple bolts, making it more convenient and quick to assemble and disassemble. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a battery box for an electric four-wheeled vehicle proposed in this invention from a frontal view.

[0021] Figure 2This is a schematic diagram showing the structural connection relationship between the battery box body, base, and protective cover of an electric four-wheeled vehicle battery box proposed in this invention;

[0022] Figure 3 This is a top view schematic diagram of the internal structure of the battery box of an electric four-wheeled vehicle according to the present invention.

[0023] Figure 4 This invention proposes a battery box for an electric four-wheeled vehicle. Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the movable block structure of a battery box for an electric four-wheeled vehicle proposed in this invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the mounting shell of an electric four-wheeled vehicle battery box according to the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the mounting shell of an electric four-wheeled vehicle battery box according to the present invention.

[0027] In the diagram: 1. Battery housing; 2. Limiting shell; 3. Battery assembly; 4. First fixing hole; 5. First locking mechanism; 501. Worm gear; 502. Worm wheel; 503. Double-acting lead screw; 504. Moving block; 505. Fixing block; 506. Limiting rod; 507. Sliding block; 508. First locking rod; 509. Mounting shell; 6. Groove block; 701. Insert block; 702. Protective cover; 703. Second fixing hole; 8. Connecting assembly; 801. L-shaped rack; 802. Connecting gear; 803. Rotating rod; 804. Circular gear 9. Second locking mechanism; 901. Rectangular rack; 902. Support block; 903. Rectangular bar; 904. Rectangular block; 905. Second locking rod; 10. Base; 11. L-shaped bar; 12. Mounting bar; 13. Fixing groove; 14. Third locking mechanism; 1401. Main bevel gear disk; 1402. Secondary bevel gear disk; 1403. Threaded rod; 1404. Threaded block; 1405. Locking bar; 1406. Rectangular groove; 15. Mounting hole; 16. Limiting groove; 17. Limiting bar; 18. Knob; 19. Wire hole. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Example 1:

[0031] Reference Figures 1-7 An electric four-wheeled vehicle battery box includes a battery box body 1, a limiting shell 2 fixedly connected inside the battery box body 1, a battery assembly 3 embedded in the limiting shell 2, first fixing holes 4 on both sides of the battery assembly 3, a first locking mechanism 5 for engaging the first fixing holes 4 inside the battery box body 1, slot blocks 6 fixedly connected to both sides of the battery box body 1, a top cover assembly above the slot blocks 6, the top cover assembly including insert blocks 701 slidably connected in the slot blocks 6, protective covers 702 fixedly connected to the top of the two insert blocks 701, a second fixing hole 703 on the middle of each insert block 701, a second locking mechanism 9 for fixing the protective covers 702 linked to the first locking mechanism 5 via a connecting assembly 8, and a base 10 at the bottom of the battery box body 1. Two L-shaped strips 11 are symmetrically fixedly connected to the top of the battery box 1. Mounting strips 12 are fixedly connected to both sides of the battery box 1. The two mounting strips 12 slide in the corresponding L-shaped strips 11. Each mounting strip 12 has a fixing groove 13. The first locking mechanism 5 is also linked to a third locking mechanism 14 for engaging the fixing groove 13. Mounting holes 15 for screws are opened at the four corners of the base 10. Limiting grooves 16 are opened on the inner walls of the four corners of the battery box 1. Four limiting strips 17 are symmetrically fixedly connected to the bottom of the protective cover 702. The four limiting strips 17 slide in the corresponding limiting grooves 16. A wire hole 19 for wires to pass through is opened on one side of the battery box 1.

[0032] In this invention, when needed, the two mounting strips 12 are slid through the corresponding L-shaped strips 11, using the L-shaped strips 11 to limit the mounting strips 12, thus initially installing the battery box 1 on the top of the base 10. Screws are then screwed into the corresponding mounting holes 15 to fix the base 10 to the vehicle body. This design avoids directly fixing the battery box 1 to the vehicle body, making it more convenient when the battery box 1 needs to be replaced next time. Next, the battery assembly 3 is placed inside the limiting shell 2, so that the battery assembly 3 is initially installed inside the battery box 1. When the battery assembly 3 needs to be used... When in use, by opening a wire hole 19 on the side of the limiting shell 2, the wire can be passed through the wire hole 19 and one end of the wire is connected to the battery assembly 3, thereby driving the four-wheeled vehicle. After the battery box 1 and the battery assembly 3 are initially installed, the limiting strip 17 is inserted into the corresponding limiting groove 16 and the insert block 701 is inserted into the corresponding slot block 6, so that the protective cover 702 can be initially fixed on the top of the battery box 1. With the setting of the limiting groove 16 and the limiting strip 17, the position of the protective cover 702 during installation can be quickly and accurately located, and the installation efficiency can be appropriately increased.

[0033] Example 2:

[0034] Reference Figures 1-7An electric four-wheeled vehicle battery box includes a battery box body 1, a limiting shell 2 fixedly connected inside the battery box body 1, a battery assembly 3 embedded in the limiting shell 2, first fixing holes 4 on both sides of the battery assembly 3, a first locking mechanism 5 for engaging the first fixing holes 4 inside the battery box body 1, slot blocks 6 fixedly connected to both sides of the battery box body 1, a top cover assembly above the slot blocks 6, and the top cover assembly including insert blocks 701 slidably connected in the slot blocks 6, with protective covers 702 fixedly connected to the tops of the two insert blocks 701. Each insert 701 has a second fixing hole 703 in the middle. The first locking mechanism 5 is linked to a second locking mechanism 9 for fixing the protective cover 702 via a connecting assembly 8. The bottom of the battery box 1 has a base 10, and the top of the base 10 is symmetrically fixedly connected to two L-shaped strips 11. The two sides of the battery box 1 are fixedly connected to mounting strips 12, and the two mounting strips 12 slide in the corresponding L-shaped strips 11. Each mounting strip 12 has a fixing groove 13. The first locking mechanism 5 is also linked to a mechanism for engaging the fixing groove 13. The third locking mechanism 14, the first locking mechanism 5 includes a worm gear 501 rotatably connected to one side of the battery box 1 via a bearing, a worm wheel 502 meshing with the outer surface of the worm gear 501, a double-acting screw 503 fixedly connected to the axis of the worm wheel 502, two moving blocks 504 symmetrically threaded to the outer surface of the double-acting screw 503, two fixing blocks 505 fixedly connected inside the battery box 1, and limit rods 506 fixedly connected between each fixing block 505 and the inner wall of the battery box 1, and one side of each moving block 504 fixedly connected to... Two sliders 507 are slidably connected to the outer surface of the corresponding limiting rods 506. The top of each moving block 504 is fixedly connected to a first locking rod 508. One end of the first locking rod 508 slides through the adjacent side wall of the limiting shell 2 and engages with a suitable first fixing hole 4. One side of the battery box 1 is fixedly connected to a mounting shell 509. The worm gear 501 is rotatably connected to the mounting shell 509 through a bearing. One end of the worm gear 501 is fixedly connected to a knob 18. The outer surface of the knob 18 is provided with anti-slip texture.

[0035] In this invention, the process is basically the same as in Embodiment 1, but further, when the battery box 1 is initially installed on the top of the base 10, the battery assembly 3 is initially installed inside the battery box 1, and the protective cover 702 is initially installed on the top of the battery box 1, the operator turns the knob 18. The knob 18 drives the worm gear 501 to rotate. Since the worm gear 501 is meshed with the worm wheel 502, it drives the worm wheel 502 and the double-acting screw 503 to rotate. The moving block 504 is threadedly connected to the double-acting screw 503, thereby driving the two moving blocks 504 to move towards the middle. The slider 507 slides on the outer surface of the limiting rod 506, which can limit the moving blocks 504 and prevent them from moving when the double-acting screw 503 rotates. The rotation phenomenon makes the movement of the moving block 504 more stable. When the two moving blocks 504 move towards the middle, they will drive the two first locking rods 508 to move towards the middle as well. The first locking rods 508 pass through the adjacent side walls of the limiting shell 2 and are inserted into the first fixing holes 4 opened on both sides of the battery assembly 3, thereby limiting the first fixing holes 4 and further fixing the battery assembly 3 in the limiting shell 2, thus completing the installation of the battery assembly 3. With this design, the user only needs to turn the knob 18, without having to turn multiple bolts, which greatly increases the installation efficiency. Moreover, through the self-locking property between the worm gear 501 and the worm wheel 502, the first locking mechanism 5 will not be activated by itself due to external force, thus enhancing the safety performance.

[0036] Example 3:

[0037] Reference Figures 1-7An electric four-wheeled vehicle battery box includes a battery box body 1, a limiting shell 2 fixedly connected inside the battery box body 1, a battery assembly 3 embedded in the limiting shell 2, first fixing holes 4 on both sides of the battery assembly 3, a first locking mechanism 5 for engaging the first fixing holes 4 inside the battery box body 1, slot blocks 6 fixedly connected to both sides of the battery box body 1, a top cover assembly above the slot blocks 6, the top cover assembly including insert blocks 701 slidably connected in the slot blocks 6, protective covers 702 fixedly connected to the top of the two insert blocks 701, a second fixing hole 703 on the middle of each insert block 701, a second locking mechanism 9 for fixing the protective covers 702 linked to the first locking mechanism 5 via a connecting assembly 8, and a base 1 at the bottom of the battery box body 1. 0. Two L-shaped strips 11 are symmetrically fixedly connected to the top of the base 10. Mounting strips 12 are fixedly connected to both sides of the battery box 1. The two mounting strips 12 slide in the corresponding L-shaped strips 11. Each mounting strip 12 has a fixing groove 13. The first locking mechanism 5 is also linked to a third locking mechanism 14 for engaging the fixing groove 13. The first locking mechanism 5 includes a worm gear 501 rotatably connected to one side of the battery box 1 via a bearing. A worm wheel 502 is meshed with the outer surface of the worm gear 501. A double-acting screw 503 is fixedly connected to the axis of the worm wheel 502. Two moving blocks 504 are symmetrically threaded to the outer surface of the double-acting screw 503. Two fixing blocks 505 are fixedly connected inside the battery box 1. The fixing blocks 505 are fixed to the battery box 1. Limiting rods 506 are fixedly connected between the inner walls of each movable block 504. Slider 507s are fixedly connected to one side of each movable block 504. Two sliders 507s are slidably connected to the outer surfaces of the corresponding limiting rods 506. A first locking rod 508 is fixedly connected to the top of each movable block 504. One end of the first locking rod 508 slides through the adjacent side walls of the limiting shell 2 and engages with a suitable first fixing hole 4. A mounting shell 509 is fixedly connected to one side of the battery box 1. A worm gear 501 is rotatably connected to the mounting shell 509 via a bearing. The connecting assembly 8 includes an L-shaped rack 801 fixedly connected to the top of the movable block 504. A connecting gear 802 is meshed with the bottom of the L-shaped rack 801. Rotary gears are fixedly connected to the shafts of the two connecting gears 802. Rod 803 and rotating rod 803 are rotatably connected to one side wall of battery box 1 via bearings. Circular gears 804 are fixedly connected to the outer surface of rotating rod 803. The second locking mechanism 9 includes a rectangular rack 901 meshing with the top of the circular gear 804. Four support blocks 902 are fixedly connected to one side of battery box 1. A rectangular strip 903 is fixedly connected between two support blocks 902. A rectangular block 904 is fixedly connected to the top of each rectangular rack 901. Two rectangular blocks 904 are slidably connected to the outer surface of the corresponding rectangular strip 903. A second locking rod 905 is fixedly connected to one end of each rectangular rack 901. One end of the second locking rod 905 slides through the adjacent side wall of slot block 6 and engages with a suitable second fixing hole 703.

[0038] In this invention, the basic structure is the same as in Embodiments 1 and 2, but with a further improvement: when the two moving blocks 504 move towards the center, they drive the two L-shaped racks 801 to move along with them. Since the L-shaped racks 801 are meshed with the connecting gear 802, they drive the connecting gear 802 and the rotating rod 803 to rotate. The rotating rod 803 then drives the circular gear 804 to rotate. Since the circular gear 804 is meshed with the rectangular rack 901, it can drive the two rectangular racks 901 to move towards the center. With this design, when the user turns the knob 18 to install the limiting shell 2, it can also simultaneously drive the second locking mechanism 9 to operate, eliminating the need for a separate drive device, reducing start-up time, and making installation faster. When both rectangular racks 901 move towards the center... When moving, the second locking rod 905 can move towards the center, allowing the two second locking rods 905 to pass through the two corresponding slots 6 and insert into the second fixing holes 703, fixing the insert block 701 to the slot block 6, thereby completing the fixation between the protective cover 702 and the battery box 1. The rectangular block 904 can slide on the surface of the rectangular strip 903 to limit the rectangular rack 901 and prevent the rectangular rack 901 from being suspended. Moreover, since both the rectangular strip 903 and the rectangular block 904 are rectangular, the rectangular rack 901 can be prevented from shifting during movement, making the movement of the rectangular rack 901 and the second locking rod 905 more stable. This design can simultaneously complete the installation of the battery assembly 3 and the protective cover 702, which is very convenient.

[0039] Example 4:

[0040] Reference Figures 1-7An electric four-wheeled vehicle battery box includes a battery box body 1, a limiting shell 2 fixedly connected inside the battery box body 1, a battery assembly 3 embedded in the limiting shell 2, first fixing holes 4 on both sides of the battery assembly 3, a first locking mechanism 5 for engaging the first fixing holes 4 inside the battery box body 1, slot blocks 6 fixedly connected to both sides of the battery box body 1, a top cover assembly above the slot blocks 6, the top cover assembly including insert blocks 701 slidably connected in the slot blocks 6, protective covers 702 fixedly connected to the top of the two insert blocks 701, a second fixing hole 703 on the middle of each insert block 701, and a second lock for fixing the protective covers 702 linked to the first locking mechanism 5 via a connecting component 8. The battery box 1 has a base 10 at its bottom, and two L-shaped strips 11 are symmetrically fixedly connected to the top of the base 10. Mounting strips 12 are fixedly connected to both sides of the battery box 1, and the two mounting strips 12 slide within the corresponding L-shaped strips 11. Each mounting strip 12 has a fixing groove 13. The first locking mechanism 5 also has a third locking mechanism 14 for engaging the fixing grooves 13. The first locking mechanism 5 includes a worm gear 501 rotatably connected to one side of the battery box 1 via a bearing. A worm wheel 502 is meshed with the outer surface of the worm gear 501. A bidirectional lead screw 503 is fixedly connected to the axis of the worm wheel 502. Two movable leads are symmetrically threaded onto the outer surface of the bidirectional lead screw 503. Block 504, two fixed blocks 505 are fixedly connected inside the battery box 1. Limit rods 506 are fixedly connected between each fixed block 505 and the inner wall of the battery box 1. Slider 507s are fixedly connected to one side of each movable block 504. The two sliders 507s are slidably connected to the outer surfaces of their corresponding limit rods 506. A first locking rod 508 is fixedly connected to the top of each movable block 504. One end of the first locking rod 508 slides through the adjacent sidewall of the limiting shell 2 and engages with a suitable first fixing hole 4. A mounting shell 509 is fixedly connected to one side of the battery box 1. A worm gear 501 is rotatably connected to the mounting shell 509 via a bearing. The third locking mechanism 14 includes two fixed blocks 505. The outer surface of the worm gear 501 has a main bevel gear disk 1401, and the outer surface of the main bevel gear disk 1401 is meshed with a secondary bevel gear disk 1402. The axis of the secondary bevel gear disk 1402 is fixedly connected to a threaded rod 1403. The threaded rod 1403 is rotatably connected to the mounting housing 509 through a bearing. The outer surface of the threaded rod 1403 is threaded with a threaded block 1404. One side of the threaded block 1404 is fixedly connected with a locking strip 1405. One end of the locking strip 1405 slides through the adjacent side wall of the L-shaped strip 11 and engages with a suitable fixing groove 13. The two sides of the mounting housing 509 are provided with rectangular grooves 1406, and the locking strip 1405 slides in the rectangular grooves 1406.

[0041] In this invention, which is basically the same as in Embodiments 1 and 2, the worm gear 501 rotates, which in turn drives the main bevel gear disk 1401 to rotate. The main bevel gear disk 1401 meshes with the secondary bevel gear disk 1402, thereby driving the secondary bevel gear disk 1402 and the threaded rod 1403 to rotate. Since the threaded rod 1403 is threadedly connected to the threaded block 1404 and the locking bar 1405 is slidably connected to the rectangular groove 1406 for limiting, the threaded block 1404 can be driven to move downward, so that the locking bar 1405 moves downward along with it. The locking bar 1405 passes through the L-shaped bar 11 and is inserted into the corresponding fixing groove 13, which can fix the battery box 1 on the top of the base 10. This design and structure can fix the battery box 1, the battery assembly 3 and the protective cover 702 at the same time. When the battery box 1 is damaged and needs to be disassembled, the battery box 1 can be quickly removed, which is convenient and quick and enhances the linkage between the mechanisms.

[0042] A method for using a battery box for an electric four-wheeled vehicle includes the following steps:

[0043] Step A: Slide the two mounting strips 12 through the corresponding L-shaped strips 11 to limit the mounting strips 12, so that the battery box 1 can be initially installed on the top of the base 10. Screw the screws into the corresponding mounting holes 15 to fix the base 10 to the vehicle body. Then, place the battery assembly 3 in the limiting shell 2 so that the battery assembly 3 is initially installed in the battery box 1. After the battery box 1 and the battery assembly 3 are initially installed, insert the limiting strip 17 into the corresponding limiting groove 16 and insert the plug 701 into the corresponding slot 6 to initially fix the protective cover 702 on the top of the battery box 1.

[0044] Step B: The operator turns knob 18, which drives worm gear 501 to rotate, thereby driving worm wheel 502 and double-acting screw 503 to rotate. This causes the two moving blocks 504 to move towards the center. When the two moving blocks 504 move towards the center, they will drive the two first locking rods 508 to move towards the center as well. This allows the first locking rods 508 to pass through the adjacent side walls of the limiting shell 2 and insert into the first fixing holes 4 opened on both sides of the battery assembly 3, thereby limiting the first fixing holes 4 and further fixing the battery assembly 3 in the limiting shell 2, thus completing the installation of the battery assembly 3.

[0045] Step C: When the two moving blocks 504 move towards the center, they drive the two L-shaped racks 801 to move together, thereby driving the connecting gear 802 and the rotating rod 803 to rotate. The rotating rod 803 then drives the circular gear 804 to rotate, thus driving the two rectangular racks 901 to move towards the center. When both rectangular racks 901 move towards the center, they drive the second locking rods 905 to move towards the center as well, so that the two second locking rods 905 pass through the two corresponding slots 6 and are inserted into the second fixing holes 703. Inside, the insert block 701 is fixed to the slot block 6, thereby completing the fixation between the protective cover 702 and the battery box 1. When the worm gear 501 rotates, it can also drive the main bevel gear disk 1401 to rotate, thereby driving the secondary bevel gear disk 1402 and the threaded rod 1403 to rotate. Therefore, the threaded block 1404 can be driven to move downward, so that the locking strip 1405 moves downward along with it, so that the locking strip 1405 passes through the L-shaped strip 11 and is inserted into the corresponding fixing slot 13, thereby fixing the battery box 1 to the top of the base 10.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A battery box for an electric four-wheeled vehicle, comprising a battery box body (1), characterized in that, A limiting shell (2) is fixedly connected inside the battery box (1). A battery assembly (3) is embedded in the limiting shell (2). A first fixing hole (4) is provided on both sides of the battery assembly (3). A first locking mechanism (5) for engaging the first fixing hole (4) is provided inside the battery box (1). A slot block (6) is fixedly connected to both sides of the battery box (1). A top cover assembly is provided above the slot block (6). The top cover assembly includes an insert block (701) that is slidably connected in the slot block (6). A protective cover (702) is fixedly connected to the top of the two insert blocks (701). A first fixing hole (5) is provided in the middle of each insert block (701). Two fixing holes (703), the first locking mechanism (5) is linked to a second locking mechanism (9) for fixing the protective cover (702) through a connecting component (8), the bottom of the battery box (1) is provided with a base (10), the top of the base (10) is symmetrically fixedly connected with two L-shaped strips (11), the two sides of the battery box (1) are fixedly connected with mounting strips (12), the two mounting strips (12) slide in the corresponding L-shaped strips (11), the mounting strips (12) are provided with fixing grooves (13), the first locking mechanism (5) is also linked to a third locking mechanism (14) for engaging the fixing grooves (13); The first locking mechanism (5) includes a worm gear (501) rotatably connected to one side of the battery box (1) via a bearing. A worm wheel (502) is meshed with the outer surface of the worm gear (501). A bidirectional lead screw (503) is fixedly connected to the axis of the worm wheel (502). Two moving blocks (504) are symmetrically threaded onto the outer surface of the bidirectional lead screw (503). Two fixing blocks (505) are fixedly connected inside the battery box (1). Limiting rods (506) are fixedly connected between each fixing block (505) and the inner wall of the battery box (1). Each of the movable blocks (504) has a slider (507) fixedly connected to one side. The two sliders (507) are slidably connected to the outer surface of the corresponding limiting rods (506). Each of the movable blocks (504) has a first locking rod (508) fixedly connected to the top. One end of the first locking rod (508) slides through the adjacent side wall of the limiting shell (2) and engages with a suitable first fixing hole (4). One of the battery boxes (1) has a mounting shell (509) fixedly connected to one side. The worm gear (501) is rotatably connected to the mounting shell (509) through a bearing. The connecting assembly (8) includes an L-shaped rack (801) fixedly connected to the top of the movable block (504). The bottom of the L-shaped rack (801) is meshed with a connecting gear (802). A rotating rod (803) is fixedly connected to the shaft center of each of the two connecting gears (802). The rotating rod (803) is rotatably connected to one side wall of the battery box (1) through a bearing. A circular gear (804) is fixedly connected to the outer surface of the rotating rod (803). The second locking mechanism (9) includes a rectangular rack (901) meshing with the top of a circular gear (804). Four support blocks (902) are fixedly connected to one side of the battery box (1). A rectangular strip (903) is fixedly connected between two of the support blocks (902). A rectangular block (904) is fixedly connected to the top of each of the rectangular racks (901). Two rectangular blocks (904) are slidably connected to the outer surface of the corresponding rectangular strip (903). A second locking rod (905) is fixedly connected to one end of each of the rectangular racks (901). One end of the second locking rod (905) slides through the adjacent sidewall of the slot block (6) and engages with a suitable second fixing hole (703). The third locking mechanism (14) includes a main bevel gear disk (1401) fixedly connected to the outer surface of two worm gears (501). The outer surface of the main bevel gear disk (1401) is meshed with a secondary bevel gear disk (1402). The axis of the secondary bevel gear disk (1402) is fixedly connected with a threaded rod (1403). The threaded rod (1403) is rotatably connected to the mounting shell (509) through a bearing. The outer surface of the threaded rod (1403) is threaded with a threaded block (1404). One side of the threaded block (1404) is fixedly connected with a locking strip (1405). One end of the locking strip (1405) slides through the adjacent side wall of the L-shaped strip (11) and engages with a suitable fixing groove (13). The two sides of the mounting shell (509) are provided with rectangular grooves (1406). The locking strip (1405) slides in the rectangular grooves (1406).

2. The battery box for an electric four-wheeled vehicle according to claim 1, characterized in that, The base (10) has mounting holes (15) at each of its four corners for screws to be screwed in.

3. The battery box for an electric four-wheeled vehicle according to claim 1, characterized in that, Limiting grooves (16) are provided on the inner walls of the four corners of the battery box (1). Four limiting strips (17) are symmetrically fixedly connected to the bottom of the protective cover (702). The four limiting strips (17) are slidably connected in the corresponding limiting grooves (16).

4. The battery box for an electric four-wheeled vehicle according to claim 1, characterized in that, A knob (18) is fixedly connected to one end of the worm gear (501), and the outer surface of the knob (18) is provided with anti-slip texture.

5. The battery box for an electric four-wheeled vehicle according to claim 1, characterized in that, One side of the battery housing (1) is provided with a wire hole (19) for wires to pass through.

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