Hoisting type battery swapping mechanism adaptive to swappable-battery boxes of various sizes

Abstract

A hoisting type battery swapping mechanism adaptive to swappable-battery boxes of various sizes, comprising a lifting appliance (1) and an upper frame (21) fixed to a swappable-battery box. The lifting appliance (1) comprises a fixing support (11), cylinder bodies (112), telescopic arms (12) and rotary locking mechanisms (13). The cylinder bodies (112) are symmetrically arranged on the fixing support (11) and have opposite extending and retracting directions, each telescopic arm (12) being connected to an extending and retracting end of a cylinder body (112). The rotary locking mechanisms (13) are connected to lower ends of two sides of cross beams of the telescopic arms (12), and each rotary locking mechanism (13) is further provided with a hook (131) rotatable around an axis. The upper frame (21) is connected to the top of the swappable-battery box, and the upper frame (21) is provided with mounting blocks (211) adaptive to the rotary locking mechanisms (13), the mounting blocks (211) being provided with mounting holes (2111); when rotating a certain angle, the hooks (131) can extend into the mounting holes (2111). The lifting appliance (1) is extendable and retractable, and is adaptive to swappable-battery boxes of different sizes. For the swappable-battery boxes of different sizes, three-stage guide positioning and shared locking mechanisms (34) are provided in a central area, and have unchanged positions and sizes, such that a fixing base configured for a large size can be compatible with both swappable-battery boxes of large sizes and swappable-battery boxes of small sizes.

Description

A hoisting battery replacement mechanism suitable for battery replacement boxes of various sizes Technical Field

[0001] The present invention relates to a hoisting-type battery-exchange mechanism that is adaptable to battery-exchange battery boxes of various sizes, and belongs to the technical field of battery-exchange. Background Art

[0002] At present, the battery-swap technology is mostly applied in the commercial vehicle field in battery-swap heavy trucks. Its battery-swap battery box is a rectangular frame. The dimensions of the battery-swap battery boxes of different models, especially the length and width in the horizontal direction, are basically the same. Therefore, the hoist used to lift the battery-swap battery box out of the vehicle body, the fixed base on the vehicle for locking the battery-swap battery box, and the fixed base used by the battery-swap station to lock the battery-swap battery box, these components can be adapted to different models by maintaining the same structure. Unlike battery-swap heavy trucks, there are many types of construction machinery with different power requirements, and the corresponding battery-swap battery box sizes also vary greatly. Developing a dedicated battery-swap mechanism for each model will greatly increase the development cost, and it is not conducive to the adaptation of the fixed base of the battery-swap station to different models. In addition, the hoists in the existing technology mostly use a complex pneumatic circuit to drive the locking mechanism, and the cost of this structure is relatively high.

[0003] Summary of the Invention

[0004] In order to solve the shortcomings of the existing technology, the purpose of the present invention is to provide a hoisting battery exchange mechanism that is suitable for battery exchange boxes of various sizes, solving the problems of poor versatility of the hoist, complex locking mechanism and high cost in the existing technology.

[0005] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A hoisting battery swap mechanism adapted to battery swap boxes of various sizes, comprising a hoist and an upper frame fixed to the battery swap box;

[0007] The sling includes a fixed bracket, a cylinder, a telescopic arm and a rotary lock mechanism. The cylinder is symmetrically arranged on the fixed bracket and has opposite telescopic directions. The telescopic arm is connected to the telescopic end of the cylinder. The rotary lock mechanism is connected to the lower ends of the crossbeams on both sides of the telescopic arm. The rotary lock mechanism is also provided with a hook that can rotate around the axis.

[0008] The upper frame is connected to the top of the battery replacement box. The upper frame is provided with a mounting block that is compatible with the rotary lock mechanism. The mounting block is provided with a mounting hole. When the hook is rotated to a certain angle, it can extend into the mounting hole.

[0009] Furthermore, a positioning component is provided below the aforementioned fixed bracket, a slope is provided on the positioning component, and the upper frame is provided with a guide slope adapted to the slope of the positioning component.

[0010] Furthermore, the aforementioned hoisting-type battery exchange mechanism also includes a guiding and positioning device, which includes a square guide column arranged on the first fixed base and a chamfer arranged on the edge of the inner surface of the bottom plate of the lower frame. The square guide column is adapted to the chamfer, and the lower frame is connected to the bottom of the battery exchange battery box.

[0011] Furthermore, the aforementioned guiding and positioning device also includes a cylindrical pin arranged on the first fixed base and a positioning hole arranged on the bottom plate of the lower frame. The top of the cylindrical pin is conical, the positioning hole is arranged in a trumpet shape, and the cylindrical pin is adapted to the positioning hole.

[0012] Furthermore, the height of the aforementioned square guide column is higher than that of the cylindrical pin.

[0013] Furthermore, a battery-changing connector plug is fixedly connected to the middle of the bottom of the aforementioned lower frame, and a battery-changing connector socket that is compatible with the battery-changing connector plug is provided in the middle of the first fixed base.

[0014] Furthermore, the height of the aforementioned cylindrical pin is higher than the battery replacement connector socket.

[0015] Furthermore, a first locking mechanism is provided on the aforementioned first fixed base, the first fixed base is located inside the square guide column, and a locking cylinder adapted to the first locking mechanism is provided inside the lower frame.

[0016] Furthermore, the aforementioned first locking mechanism includes an electric push rod, a locking pin and a locking pin cylinder at the base end, the locking pin is connected to the electric push rod, the locking pin cylinder is fixed on the first fixed base, and the axial holes on the electric push rod and the locking pin cylinder are coaxially arranged.

[0017] Furthermore, there is a second locking mechanism on the aforementioned first fixed base, and the second locking mechanism is located on the outside of the square guide column. The second locking mechanism matches the locking cylinder in the lower frame of the large-size battery replacement box.

[0018] The beneficial effects achieved by the present invention are:

[0019] 1. The sling is retractable and can adapt to battery boxes of different sizes;

[0020] 2. For battery swap boxes of different sizes, the three-level guide positioning and shared locking mechanism are set in the middle area, and the position and size remain unchanged. The fixed base configured for the larger size can be compatible with both larger and smaller battery swap boxes;

[0021] 2. The electric locking mechanism eliminates the need for complex pneumatic or hydraulic circuits, resulting in low cost and simple locking and unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view of the battery swap mechanism of a larger-sized battery swap box;

[0023] Figure 2 is a perspective view of the battery swap mechanism of a larger-sized battery swap box;

[0024] Figure 3 is an exploded view of the battery swap mechanism of a larger battery swap box;

[0025] Figure 4 is a perspective view of the spreader;

[0026] Figure 5 is a perspective view of the lower frame of a larger-sized battery replacement box;

[0027] Figure 6 is a three-dimensional view of the fixed base of a larger-sized battery replacement box;

[0028] Figure 7 is a diagram showing the coordination of the lower frame and fixed base of a larger-sized battery replacement box;

[0029] FIG8 is a perspective view of a battery swap mechanism of another smaller-sized battery swap box;

[0030] Figure 9 is a diagram showing the coordination of the lower frame and fixed base of a smaller-sized battery replacement box;

[0031] Figure 10 is a diagram showing the coordination of the lower frame of a smaller-sized battery swap box and the fixed base of a larger-sized battery swap box.

[0032] The meanings of the reference numerals in the figure are: 1-sling; 2-first battery exchange box; 2'-second battery exchange box; 11-fixed bracket; 111-positioning component; 112-cylinder body; 12-telescopic arm; 13-rotary lock mechanism; 131-hook; 21-upper frame; 211-mounting block; 2111-mounting hole; 212-guide ramp; 22-first lower frame; 22'-second lower frame; 221-chamfer; 222-positioning hole; 223-battery exchange connector plug; 224-locking cylinder; 3-first fixed base; 3'-second fixed base; 31-square guide column; 32-cylindrical pin; 33-battery exchange connector socket; 34-first locking mechanism; 34'-second locking mechanism; 341-electric push rod; 342-locking pin; 343-locking pin cylinder; DETAILED DESCRIPTION

[0033] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. Unless there is a conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0034] Example 1

[0035] This embodiment discloses a hoisting-type battery exchange mechanism that is adaptable to battery exchange boxes of various sizes. Taking the first battery exchange battery box 2 as an example (the first battery exchange battery box 2 is a larger-sized battery exchange battery box), as shown in Figures 1-3, the battery exchange mechanism includes a hoisting mechanism located at the top of the first battery exchange battery box 2 and a guiding, positioning and locking mechanism located at the bottom of the first battery exchange battery box 2.

[0036] The lifting mechanism includes a sling 1 and an upper frame 21 fixed to the first battery exchange battery box 2, and the sling 1 and the upper frame 21 are adaptively connected. As shown in Figure 4, the sling 1 includes a central fixed bracket 11, two T-shaped telescopic arms 12, and four rotary lock mechanisms 13, wherein positioning components 111 are provided on all four sides of the lower portion of the fixed bracket 11. The positioning components 111 are inclined and the inclined surfaces are outward. The two T-shaped telescopic arms 12 are arranged oppositely, and the four rotary lock mechanisms 13 are distributed on both sides of the crossbeams of the two T-shaped telescopic arms. The rotary lock mechanism 13 is provided with a hook 131 that can rotate around the axis. The upper frame 21 includes a mounting block 211 and a guide slope 212, wherein the mounting block 211 is provided with a mounting hole 2111. By coordinating the inclined surface of the positioning component 111 with the slope of the guide ramp 212, not only the constraints of the sling 1 and the first battery box 2 in two directions on the horizontal plane are achieved, but also the horizontal error of the sling 1 is adjusted to ensure that all hooks 131 are smoothly inserted into the mounting hole 2111 after rotating 90°.

[0037] As shown in Figure 6, the first fixed base 3 is provided with a square guide column 31 with two adjacent outer sides being sloped, a cylindrical pin 32 with a tapered top, a power exchange connector socket 33 and a side-plug first locking mechanism 34, wherein the square guide column 31 is higher than the cylindrical pin 32, and the cylindrical pin 32 is higher than the power exchange connector socket 33. The side-plug first locking mechanism 34 includes an electric push rod 341, a locking pin 342 and a base-end locking pin cylinder 343. The locking pin 342 is connected to the electric push rod 341 and moves with the electric push rod 341. The locking pin cylinder 343 is fixed on the first fixed base 3, and the axial holes on the electric push rod 341 and the locking pin cylinder 343 are coaxially arranged. As shown in Figure 5, the inner edge of the bottom plate of the first lower frame 22 is provided with a chamfer 221 that cooperates with the square guide column 31 for rough positioning, and the trumpet-shaped positioning hole 222 cooperates with the cylindrical pin 32 for fine positioning. A battery swap connector plug 223 is also fixedly connected to the middle of the bottom of the first lower frame 22. The battery swap connector plug 223 and the battery swap connector socket 33 on the fixed base 3 are also further adjusted in position accuracy through the guide pins and guide holes. A locking cylinder 224 is provided inside the first lower frame 22 that is compatible with the first locking mechanism 34. During the process of the first battery swap battery box 2 falling with the sling 1, it is successively positioned by the three-level guide of the square guide column 31, the tapered cylindrical pin 32, and the battery swap connector to achieve horizontal error adjustment of the battery swap battery box, ensuring that all locking pins 342 are smoothly inserted from the locking pin cylinder 343 at the base end into the locking cylinder 224 at the battery swap box end under the push of the electric push rod 341, thereby locking the first battery swap battery box 2.

[0038] 2, 4 and 8, with the telescopic arm 12 extending and retracting direction as the length direction, the first battery exchange box 2 and the second battery exchange box 2' have a large difference in size in this direction (the length of the first battery exchange box 2 is greater than the length of the second battery exchange box 2'), so the spacing between the mounting holes is also large. Two axially parallel but oppositely directed cylinders 112 are provided on the fixed bracket 11, and the T-shaped telescopic arm 12 moves along the axial direction of the cylinder, thereby adjusting the spacing of the hooks 131 in the length direction to adapt to the battery exchange box mounting holes of different spacings. In order to increase the moving range of the telescopic arm 12, the two cylinders of the fixed bracket 11 are staggered.

[0039] Example 2

[0040] Referring to Figures 7, 9 and 10, the length dimensions of the first lower frame 22 and the second lower frame 22' differ greatly. For battery swap boxes of different sizes, different fixed bases are selected, and the corresponding sizes of the first fixed base 3 and the second fixed base 3' are also quite different. In order to unify the size of the fixed base and adapt to battery swap boxes of different sizes, the present invention makes the three-level guide positioning shape and position of battery swap boxes of different sizes completely consistent. The square guide column 31, the tapered cylindrical pin 32 and the battery swap connector socket 33 are all placed in the middle area of ​​the fixed base, and ensure that the second lower frame 22' used for the second battery swap battery box can cover the middle area. In addition, six first locking mechanisms 34 are provided in the middle area, and are arranged in both directions of the horizontal plane to achieve locking in both directions of the horizontal plane. Battery swap boxes of different sizes share these six first locking mechanisms. In addition, for larger battery swap boxes, additional second locking mechanisms 34' can be set in the two side areas outside the central area. These locking mechanisms can be left idle when adapting to smaller battery swap boxes.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hanging type battery replacement mechanism adapted to battery replacement boxes of various sizes, characterized in that: It comprises a sling (1) and an upper frame (21) fixed on a battery replacement box; The sling (1) comprises a fixed support (11), a cylinder (112), a telescopic arm (12) and a rotary lock mechanism (13); the cylinder (112) is symmetrically arranged on the fixed support (11) and has opposite telescopic directions; the telescopic arm (12) is connected to the telescopic end of the cylinder (112); the rotary lock mechanism (13) is connected to the lower ends of the cross beams on both sides of the telescopic arm (12); and the rotary lock mechanism (13) is also provided with a hook (131) that can rotate around an axis; The upper frame (21) is connected to the top of the battery replacement box, and the upper frame (21) is provided with a mounting block (211) adapted to the rotary lock mechanism (13), and the mounting block (211) is provided with a mounting hole (2111), and when the hook (131) is rotated to a certain angle, it can extend into the mounting hole (2111).

2. According to claim 1, the hoisting type battery replacement mechanism adapted to battery boxes of various sizes is characterized in that: A positioning component (111) is provided below the fixed bracket (11), an inclined surface is provided on the positioning component (111), and a guiding slope (212) adapted to the inclined surface of the positioning component (111) is provided on the upper frame (21).

3. The hoisting type battery replacement mechanism adapted to battery replacement boxes of various sizes according to claim 1 is characterized in that: The invention also comprises a guiding and positioning device, which comprises a square guiding column (31) arranged on the first fixed base (3) and a chamfer (221) arranged on the edge of the inner surface of the bottom plate of the lower frame, wherein the square guiding column (31) is matched with the chamfer (221), and the lower frame is connected to the bottom of the battery replacement box.

4. The hoisting-type battery-exchange mechanism adapted to battery boxes of various sizes according to claim 3 is characterized in that: The guiding and positioning device also includes a cylindrical pin (32) arranged on the first fixed base (3) and a positioning hole (222) arranged on the bottom plate of the lower frame, the top of the cylindrical pin (32) is conical, the positioning hole (222) is arranged in a trumpet shape, and the cylindrical pin (32) is adapted to the positioning hole (222).

5. The hoisting type battery replacement mechanism adapted to battery replacement boxes of various sizes according to claim 4 is characterized in that: The height of the square guide column (31) is higher than the height of the cylindrical pin (32).

6. The hoisting type battery replacement mechanism adapted to battery replacement boxes of various sizes according to claim 4 is characterized in that: A power-exchange connector plug (223) is also fixedly connected in the middle of the bottom of the lower frame, and a power-exchange connector socket (33) compatible with the power-exchange connector plug (223) is provided in the middle of the first fixed base (3).

7. The hoisting type battery replacement mechanism adapted to battery replacement boxes of various sizes according to claim 6 is characterized in that: The cylindrical pin (32) is higher than the power-changing connector socket (33).

8. The hoisting-type battery-exchange mechanism adapted to battery boxes of various sizes according to claim 3 is characterized in that: The first fixed base (3) is provided with a first locking mechanism (34), the first fixed base (3) is located inside the square guide column (31), and a locking cylinder (224) adapted to the first locking mechanism (34) is provided inside the lower frame.

9. The hoisting-type battery-exchange mechanism adapted to battery boxes of various sizes according to claim 8 is characterized in that: The first locking mechanism (34) comprises an electric push rod (341), a locking pin (342) and a locking pin cylinder (343) at the base end, wherein the locking pin (342) is connected to the electric push rod (341), the locking pin cylinder (343) is fixed to the first fixed base (3), and the axial holes on the electric push rod (341) and the locking pin cylinder (343) are coaxially arranged.

10. The hoisting type battery replacement mechanism adapted to battery replacement boxes of various sizes according to claim 8, characterized in that: A second locking mechanism (34') is provided on the first fixed base (3), and the second locking mechanism (34') is located outside the square guide column (31), and the second locking mechanism (34') matches the locking cylinder (224) in the lower frame of the large-size battery replacement box.

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