Vehicle-mounted battery swapping device

Abstract

The application relates to a vehicle-mounted battery replacing device which comprises a quick battery pack adapter structure and a fixed bracket structure, the quick battery pack adapter structure being connected with the fixed bracket structure through a floating nut assembly and a buffer pin assembly; the fixed bracket structure comprises a bracket frame assembly, a side part guiding roller assembly and a bottom part guiding roller assembly, the bracket frame assembly comprising a bottom frame, a rear part stand column assembly, a dust baffle, a side part pre-guiding bent plate and a side cross beam assembly; the bottom frame is a rectangular frame composed of square tubes, and the square tubes on the two sides of the rectangular frame are provided with welded nuts for mounting the side part guiding roller assembly. The application mainly solves the problems of how to realize the battery replacing function by using the existing charging battery pack, the difficulty in pushing and pulling positioning of the battery box during the battery replacing process, the high positioning requirement of the locking mechanism, the low reliability and the high cost, and can realize the rigid and reliable fixing of the battery box and effectively prevent the loosening of the battery box in the vibration environment.

Description

Technical Field

[0001] This invention belongs to the field of battery swapping technology, and specifically relates to an on-board battery swapping device. Background Technology

[0002] The main obstacles to the widespread adoption of electric vehicles currently lie in battery safety and charging efficiency. With continuous advancements in battery technology, battery safety is also constantly improving. Regarding charging efficiency, battery swapping has an inherent advantage in the public sector where vehicle specifications are relatively uniform. In battery swapping, the design of the battery box structure and its fixing structure is crucial in ensuring reliable fixation between the battery box and the vehicle body and adapting to frequent disassembly and use. Furthermore, given the long development cycle and high development costs associated with redeveloping battery swapping boxes, it is essential to utilize existing battery packs to quickly adapt to market demands for battery swapping functionality. This invention primarily addresses issues such as how to utilize existing standard rechargeable battery packs for battery swapping, the difficulty in pushing and pulling the battery box for positioning during swapping, the high positioning requirements of the locking mechanism, low reliability, and high cost. It also enables rigid and reliable fixation of the battery box, effectively preventing loosening under vibration. Summary of the Invention

[0003] To address the aforementioned issues, this invention discloses an on-board battery swapping device. It primarily utilizes a buffer pin assembly to reduce inertial damage to the fixed bracket structure when the quick-swap battery transfer structure contacts it, thereby improving overall stability. The cooperation between the side beam assembly and the locking assembly ensures a tighter connection between the quick-swap battery transfer structure and the fixed bracket structure, preventing detachment. Furthermore, roller assemblies are provided on the side walls and bottom of the fixed bracket structure, making installation and disassembly more convenient and quick. The roller assemblies and the side pre-guided bending plate also guide the quick-swap battery transfer structure, achieving initial positioning during installation.

[0004] To achieve the above objectives, the present invention discloses the following technical solution:

[0005] A vehicle-mounted battery swapping device includes a quick-swap battery pack adapter structure and a fixed bracket structure. The quick-swap battery pack adapter structure is connected to the fixed bracket structure via a floating nut assembly and a buffer pin assembly. The fixed bracket structure includes a bracket frame assembly, a side guide roller assembly, and a bottom guide roller assembly. The bracket frame assembly includes a bottom frame, a rear column assembly, a dust baffle, a side pre-guided bending plate, and a side crossbeam assembly. Welded nuts for mounting the side guide roller assemblies are provided on both sides of the bottom frame. Multiple U-shaped bending frame plates are provided on the bottom frame, and multiple bottom guide roller assemblies are provided above the U-shaped bending frame plates. The rear column assembly is positioned... On one side of the bottom frame, the rear column assembly includes four end-fixed columns, a buffer pin mounting plate, and a connector socket mounting bracket plate. The four end-fixed columns are arranged side by side, forming a first space, a second space, and a third space. The buffer pin mounting plate is disposed in the first space and the third space, and the connector socket mounting bracket plate is disposed in the second space. The buffer pin mounting plate is fixed at both ends to the side walls of two adjacent end-fixed columns, and the connector socket mounting bracket plate is connected to the side walls of the end-fixed columns on both sides of the second space. The bottoms of the four end-fixed columns are connected to the bottom frame. The side crossbeam assembly is provided. Within the space between the dustproof baffle and the quick-change battery pack adapter, the floating nut is housed inside the side beam assembly. The side beam assembly includes a housing, a guide pin, a support column, and an L-shaped bracket. Both the support column and the L-shaped bracket are located inside the housing. The outer side of one side of the housing is fixedly connected to the guide pin. A connection hole is provided on the outer side wall of the housing below the guide pin. The L-shaped bracket is fixedly connected to the interior of the housing. The support column is mounted on the L-shaped bracket and is parallel to the connection hole. A spring is mounted on the support column. The first end of the floating nut is connected to the spring, and the second end of the floating nut is connected to the connection hole. The buffer pin assembly is disposed on the buffer pin mounting plate, with its first end sleeved on the buffer pin mounting plate and its second end in contact with the quick-change battery pack adapter structure. The buffer pin assembly includes a cotter pin, a buffer spring, a buffer guide sleeve, and a buffer pin. The first end of the buffer pin is in contact with the quick-change battery pack adapter structure, and the second end of the buffer pin is connected to the cotter pin. The buffer pin is sleeved on the outer side of the buffer pin, and the buffer spring is sleeved on the outer side wall of the buffer pin. The first end of the buffer spring is fixedly connected to the buffer guide sleeve, and the second end of the spring is in contact with the side wall of the buffer pin mounting plate.

[0006] Preferably, the side guide roller assemblies are symmetrically arranged on both sides of the bracket frame; the bottom guide roller assemblies are symmetrically arranged at the bottom of the bracket frame.

[0007] Preferably, the dustproof baffles are symmetrically welded to both sides of the bottom frame; the side pre-guided bending plates are symmetrically welded to the dustproof baffles on both sides, and the side pre-guided bending plates are generally funnel-shaped and have a guiding and positioning function.

[0008] Preferably, the cotter pin is provided with a slotted nut, which is used to limit the displacement of the buffer pin assembly.

[0009] Preferably, the quick-change battery pack adapter structure includes an adapter frame structure, a high-voltage junction box assembly, a locking mechanism, and a frame guide sleeve; the first side of the adapter frame structure is in contact with the connector socket fixing plate, and the second and third sides of the adapter frame are parallel to the dustproof baffle; the high-voltage junction box assembly and the frame guide sleeve are disposed on the first side of the adapter frame structure, and the two frame guide sleeves are respectively disposed on the first side of the adapter frame structure on both sides of the high-voltage junction box assembly; the two locking mechanisms are respectively disposed on the second and third sides of the adapter frame.

[0010] Preferably, the adapter frame structure includes a main frame structure and a locking mechanism fixing plate; the bottom of the main frame structure is provided with a nut for connecting to the battery pack; the locking mechanism fixing plate is provided on both sides of the main frame structure, and the locking mechanism is provided on the locking mechanism fixing plate; when the quick-change battery pack adapter structure is used in conjunction with the fixed bracket structure, the lower surface of the bottom of the main frame structure contacts the bottom guide roller assembly, the side crossbeam assembly cooperates with the locking mechanism and the locking mechanism fixing plate, and the frame guide sleeve cooperates with the buffer pin assembly.

[0011] Preferably, the bottom frame is a rectangular frame composed of welded square tubes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The present invention is provided with a buffer pin assembly, which can effectively reduce the impact of the inertia of the quick-change battery transfer structure on the fixed bracket structure when the quick-change battery transfer structure is installed. At the same time, the buffer pin assembly can also cooperate with the frame guide sleeve on the quick-change battery transfer structure to play a guiding role.

[0014] (2) The side beam assembly of the present invention is provided with a floating nut. The floating nut can achieve a slight displacement inside the side beam assembly, so that it can cooperate with the fixed bracket structure even if the size of the quick-change battery adapter structure is deviated, thus effectively ensuring the stability of the overall structure and avoiding the occurrence of falling off.

[0015] (3) The side guide roller assembly, bottom guide roller assembly and side pre-guide plate of the present invention play a guiding role for the quick-change battery pack transfer structure. When the quick-change battery pack transfer structure needs to be installed on the fixed bracket structure, the side pre-guide plate first plays a preliminary guiding role for the quick-change battery pack transfer structure so that the quick-change battery pack transfer structure can accurately enter the top of the fixed bracket structure. When entering the fixed bracket structure, the side guide roller assembly and bottom guide roller assembly play a guiding role for the quick-change battery pack transfer structure and quickly enter the interior of the fixed bracket structure under their drive. At the same time, under the action of the buffer pin assembly, the impact force caused by the impact is reduced, so that the quick-change battery pack transfer structure can be quickly and accurately installed inside the fixed bracket structure. Attached Figure Description

[0016] Figure 1 This is an overall structural view of the vehicle-mounted battery swapping device of the present invention;

[0017] Figure 2 This is a front view of the fast-swapping battery pack transfer structure of the vehicle-mounted battery swapping device of the present invention;

[0018] Figure 3 This is a top view of the fast battery swapping adapter structure of the vehicle-mounted battery swapping device of the present invention;

[0019] Figure 4 This is a front view of the fixed bracket structure of the vehicle-mounted battery swapping device of the present invention;

[0020] Figure 5 This is a top view of the fixed bracket structure of the vehicle-mounted battery swapping device of the present invention;

[0021] Figure 6 This is a cross-sectional view of the side beam assembly of the vehicle-mounted battery swapping device of the present invention;

[0022] Figure 7 This is a schematic diagram of the overall structure of the buffer pin assembly of the vehicle-mounted battery swapping device of the present invention.

[0023] The following are descriptions of some of the attached figures:

[0024] 1-Quick-change battery pack adapter structure, 2-Fixed bracket structure, 3-Connecting arm, 4-Bracket frame assembly, 5-Side guide roller assembly, 6-Bottom guide roller assembly, 7-Floating nut, 8-Buffer pin assembly, 9-Bottom frame, 10-Rear column assembly, 11-Dustproof baffle, 12-Side pre-guided bending plate, 13-Side crossbeam assembly, 14-U-shaped bending frame plate, 15-Buffer pin mounting plate, 16-Connector socket fixing frame plate, 17-Locking mechanism, 18-Locking mechanism fixing plate, 19-High voltage junction box assembly, 20-Frame guide sleeve, 21-Adapter frame structure, 22-Outer shell, 23-Guide pin, 24-Support column, 25-L-shaped bracket, 26-Connecting hole, 27-Spring, 28-Cotter pin, 29-Buffer spring, 30-Buffer pin, 31-Buffer guide sleeve, 33-Slotted nut, 34-Battery pack. Detailed Implementation

[0025] Exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0026] This invention provides an on-board battery swapping device, such as... Figure 1-7 As shown, it includes a battery pack 34, a quick-swap battery pack adapter structure 1, and a fixed bracket structure 2. The quick-swap battery pack adapter structure 1 is connected to the fixed bracket structure 2 through a floating nut assembly and a buffer pin assembly 8. The battery pack 34 is fixed on the quick-swap battery pack adapter structure 1 and connected to the high-voltage junction box assembly 19 through a wiring harness. The two fixed bracket structures 2 are symmetrically fixed on both sides of the vehicle body beam, and are reinforced and supported in the middle by a connecting arm 3.

[0027] The fixed bracket structure 2 includes a bracket frame assembly 4, a side guide roller assembly 5, and a bottom guide roller assembly 6. The bracket frame assembly 4 includes a bottom frame 9, a rear column assembly 10, a dustproof baffle 11, a side pre-guided bending plate 12, and a side crossbeam assembly 13. The bottom frame 9 is a rectangular frame composed of square tubes welded together. Welded nuts are provided on the square tubes on both sides of the rectangular frame for installing the side guide roller assembly 5. Several U-shaped bent frame plates 14 are welded longitudinally to the bottom frame 9. Multiple bottom guide roller assemblies 6 are arranged above the U-shaped bent frame plates 14. The U-shaped bent frame plates 14 are used to fix the bottom guide roller assembly 6 and strengthen the overall structural strength. The rear support column is located on one side of the rectangular frame. The rear support column assembly 10 includes four end-fixed support columns, a buffer pin mounting plate 15, and a connector socket fixing bracket plate 16. The four end-fixed support columns are arranged side by side, forming a first space, a second space, and a third space. The buffer pin mounting plate 15 is installed in the first space and the third space, and the connector socket fixing bracket plate 16 is installed in the second space. The two ends of the buffer pin mounting plate 15 are respectively welded to the side walls of the two end-fixed support columns. The two sides of the connector socket fixing bracket plate 16 are respectively connected to the side walls of the two end-fixed support columns in the second space. One end of the four end-fixed support columns is connected to the bottom frame 9.

[0028] The side crossbeam assembly 13 is disposed in the space between the dust baffle 11 and the quick-change battery pack adapter structure 1. A floating nut 7 is installed inside the side crossbeam assembly 13. The side crossbeam assembly 13 comprises a housing 22, a guide pin 23, a support column 24, and an L-shaped bracket 25. Both the support column 24 and the L-shaped bracket 25 are disposed inside the housing 22. One side of the housing 22 is fixedly connected to the guide pin 23. A connection hole 26 is provided on the outer sidewall below the guide pin 23. The housing 22 effectively prevents dust and water stains from entering during vehicle operation, thus avoiding impact on the mechanism's use and lifespan. Meanwhile, it facilitates the maintenance and replacement of the floating nut 7; the L-shaped bracket 25 is fixedly connected to the inside of the outer shell 22, the support column 24 is set on the L-shaped bracket 25, the support column 24 is parallel to the connection hole 26, the support column 24 is provided with a spring 27, the first end of the floating nut 7 is connected to the spring 27, and the second end of the floating nut 7 is in contact with the connection hole 26; the buffer pin assembly 8 is set on the buffer pin mounting plate 15, the first end of the buffer pin assembly 8 is sleeved on the buffer pin mounting plate 15, and the second end of the buffer pin assembly 8 is in contact with the quick-change battery adapter structure 1.

[0029] The L-shaped bracket 25 is a bent piece, with round holes on each of the two bent edges, which are used to fix the support column 24.

[0030] The support column 24 is a cylindrical structure with a stepped shaft on one end. The stepped shaft is inserted into the round hole of the L-shaped bracket 25 for fixed connection. The support column 24 has a round hole in the middle.

[0031] The floating nut 7 is a square nut, placed between the spring 27 and the outer shell 22. The front end of the square nut has a flared structure to facilitate the insertion of bolts from the side to fix the position of the square nut. The rear part has a stepped round hole to facilitate the insertion and support of the spring 27. The internal thread is provided close to the connecting hole 26 for fixed connection with the locking mechanism.

[0032] Spring 27 is fitted on support column 24, with one end pressing against the inner side of L-shaped bracket 25 and the other end pressing against the nut step surface, in a compressed state. Floating nut assembly is installed inside side beam assembly 13 for locking in conjunction with locking mechanism.

[0033] The buffer pin assembly 8 includes a cotter pin 28, a buffer spring 29, a buffer guide sleeve 31, and a buffer pin 30. The first end of the buffer pin 30 is in contact with the quick-change battery adapter structure 1, and the second end of the buffer pin 30 is connected to the cotter pin 28. The buffer pin 30 is sleeved on the outside of the connection between the buffer pin 30 and the connecting post. The buffer spring 29 is sleeved on the outside of the buffer pin 30. The first end of the buffer spring 29 is fixedly connected to the buffer guide sleeve 31, and the second end of the spring 29 is in contact with the side wall of the buffer pin mounting plate 15. A slotted nut 33 is provided on the cotter pin 28, and the slotted nut 33 restricts the displacement of the buffer pin assembly 8.

[0034] The buffer pin 30 has a cylindrical structure with a tapered chamfer at the front end for guiding and positioning, a limiting boss in the middle for limiting the guiding stroke, and an external thread at the rear for cooperating with the slotted nut 33 to fix it on the buffer pin mounting plate 15.

[0035] The cotter pin 28 cooperates with the slotted nut 33 to prevent loosening. The buffer guide sleeve 31 is a cylindrical bushing structure and is installed between the limiting boss and the buffer spring 29. The buffer pin assembly 8 cooperates with the frame guide sleeve 20 to guide and buffer when the battery pack 34 adapter structure is about to be pushed into place.

[0036] The side guide roller assembly 5 is symmetrically arranged on both sides of the bracket frame and is used for left and right guidance and positioning during the process of pushing the battery pack 34 adapter structure into the fixed bracket structure 2; the bottom guide roller assembly 6 is symmetrically arranged at the bottom of the bracket frame to facilitate the pushing and pulling of the battery pack 34 adapter structure during the battery swapping process.

[0037] Dust baffles 11 are symmetrically welded to both sides of the bottom frame 9 to strengthen the overall structure and to shield the dust and sewage brought up by the vehicle during operation; side pre-guided bending plates 12 are symmetrically welded to the dust baffles 11 on both sides, and their overall shape is flared, which has the function of initial guidance and positioning.

[0038] The quick-change battery adapter structure 1 comprises an adapter frame structure 21, a high-voltage junction box assembly 19, a locking mechanism 17, and a frame guide sleeve 20. The first side of the adapter frame structure 21 contacts the connector socket fixing plate 16, and the second and third sides of the adapter frame are parallel to the dustproof baffle 11. The high-voltage junction box assembly 19 and the frame guide sleeve 20 are disposed on the first side of the adapter frame structure 21, and the two frame guide sleeves 20 are respectively disposed on the first side of the adapter frame structure 21 on both sides of the high-voltage junction box assembly 19. The frame guide sleeve 20 is a cylindrical structure with a round hole in the middle. The frame guide sleeve 20 cooperates with the buffer pin assembly 8 for buffer positioning when the quick-change battery adapter structure 1 is pushed into place. The two locking mechanisms are disposed on the second and third sides of the adapter frame.

[0039] The adapter frame structure 21 includes a main frame structure and a locking mechanism fixing plate 18; the bottom of the main frame structure has nuts for connecting to the battery pack 34; the locking mechanism fixing plate 18 is set on both sides of the main frame structure, the locking mechanism 17 is set on the locking mechanism fixing plate 18, the lower part of the locking mechanism fixing plate 18 has diagonal round holes for fixing the locking mechanism, the upper part of the locking mechanism fixing plate 18 has round holes for cooperating with the guide pin 23 to guide and position the battery box, ensuring that the locking mechanism bolts and nuts are precisely positioned, and the frame guide sleeve 20 cooperates with the buffer pin assembly 8.

[0040] The locking mechanism is a publicly disclosed patent and has a self-locking function. The battery swapping equipment can perform the battery swapping action by tightening / loosening the locking mechanisms on both sides and pushing / pulling the front vertical column of the battery pack 34 adapter structure.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A vehicle-mounted battery swapping device, characterized in that: It includes a quick-change battery pack adapter structure and a fixed bracket structure, wherein the quick-change battery pack adapter structure is connected to the fixed bracket structure through a floating nut assembly and a buffer pin assembly; The fixed bracket structure includes a bracket frame assembly, a side guide roller assembly, and a bottom guide roller assembly. The bracket frame assembly includes a bottom frame, a rear column assembly, a dustproof baffle, a side pre-guided bending plate, and a side crossbeam assembly. Welded nuts for mounting the side guide roller assemblies are provided on both sides of the bottom frame. Multiple U-shaped bending frame plates are provided on the bottom frame, and multiple bottom guide roller assemblies are provided above the U-shaped bending frame plates. The rear column assembly is disposed on one side of the bottom frame. The rear column assembly includes four end-fixed columns, a buffer pin mounting plate, and a connector socket mounting bracket plate. The four end-fixed columns are arranged side by side and form a first space, a second space, and a third space with each other. The buffer pin mounting plate is disposed in the first space and the third space, and the connector socket mounting bracket plate is disposed in the second space. The two ends of the buffer pin mounting plate are respectively fixed to the side walls of two adjacent end-fixed columns. The two sides of the connector socket mounting bracket plate are respectively connected to the side walls of the end-fixed columns on both sides of the second space. The bottoms of the four end-fixed columns are connected to the bottom frame. The side beam assembly is disposed in the space between the dustproof baffle and the quick-change battery pack adapter structure. The floating nut is disposed inside the side beam assembly. The side beam assembly includes a housing, a guide pin, a support column, and an L-shaped bracket. The support column and the L-shaped bracket are both disposed inside the housing. The outer side of one side of the housing is fixedly connected to the guide pin. A connection hole is provided on the outer side wall of the housing below the guide pin. The L-shaped bracket is fixedly connected to the interior of the housing. The support column is disposed on the L-shaped bracket. The support column is parallel to the connection hole. A spring is disposed on the support column. The first end of the floating nut is connected to the spring, and the second end of the floating nut is in contact with the connection hole. The buffer pin assembly is disposed on the buffer pin mounting plate. The first end of the buffer pin assembly is sleeved on the buffer pin mounting plate, and the second end of the buffer pin assembly is in contact with the quick-change battery pack adapter structure. The buffer pin assembly includes a cotter pin, a buffer spring, a buffer guide sleeve, and a buffer pin. The first end of the buffer pin is in contact with the quick-change battery pack adapter structure, and the second end of the buffer pin is connected to the cotter pin. The buffer pin is sleeved on the outer side of the buffer pin, and the buffer spring is sleeved on the outer side wall of the buffer pin. The first end of the buffer spring is fixedly connected to the buffer guide sleeve, and the second end of the spring is in contact with the side wall of the buffer pin mounting plate.

2. The vehicle-mounted battery swapping device according to claim 1, characterized in that: The side guide roller assemblies are symmetrically arranged on both sides of the bracket frame; the bottom guide roller assemblies are symmetrically arranged at the bottom of the bracket frame.

3. The vehicle-mounted battery swapping device according to claim 2, characterized in that: The dustproof baffles are symmetrically welded to both sides of the bottom frame; the side pre-guided bending plates are symmetrically welded to the dustproof baffles on both sides, and the side pre-guided bending plates are generally funnel-shaped and have a guiding and positioning function.

4. The vehicle-mounted battery swapping device according to claim 3, characterized in that: The cotter pin is provided with a slotted nut, which is used to limit the displacement of the buffer pin assembly.

5. The vehicle-mounted battery swapping device according to claim 1, characterized in that: The quick-change battery pack adapter structure includes an adapter frame structure, a high-voltage junction box assembly, a locking mechanism, and a frame guide sleeve. The first side of the adapter frame structure contacts the connector socket fixing plate, and the second and third sides of the adapter frame are parallel to the dustproof baffle. The high-voltage junction box assembly and the frame guide sleeve are disposed on the first side of the adapter frame structure, and two frame guide sleeves are respectively disposed on the first side of the adapter frame structure on both sides of the high-voltage junction box assembly. Two locking mechanisms are respectively disposed on the second and third sides of the adapter frame.

6. The vehicle-mounted battery swapping device according to claim 5, characterized in that: The adapter frame structure includes a main frame structure and a locking mechanism fixing plate; the bottom of the main frame structure is provided with a nut for connecting to the battery pack; the locking mechanism fixing plate is provided on both sides of the main frame structure, and the locking mechanism is provided on the locking mechanism fixing plate; when the quick-change battery pack adapter structure is used in conjunction with the fixed bracket structure, the lower surface of the bottom of the main frame structure contacts the bottom guide roller assembly, the side crossbeam assembly cooperates with the locking mechanism and the locking mechanism fixing plate, and the frame guide sleeve cooperates with the buffer pin assembly.

7. The vehicle-mounted battery swapping device according to claim 1, characterized in that: The bottom frame is a rectangular frame made of welded square tubes.

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