New energy battery pack convenient for battery replacement

Abstract

The new energy battery pack comprises a battery pack body and a box body with a cavity and a cover plate, the front side wall and the rear side wall of the battery pack body are each provided with a big-end-up trapezoidal boss, the inner wall of the box body is provided with an inclined strut assembly, and the left side wall and the right side wall of the battery pack body are each slidably connected with a limiting claw; fan-shaped convex blocks are arranged at the positions, corresponding to the limiting claws, of the inner wall of the box body, the battery pack is matched with the box body through clamping claws and cylindrical pins, the battery pack is slidably connected with a sliding frame below the limiting claws, and a connecting rod assembly is arranged between the cover plate and the box body; an ejector block is slidably connected to the sliding frame, and a power assembly is arranged between the ejector block and the box body; the fan-shaped protruding block is rotationally connected with a pressing rod, the fan-shaped protruding block is connected with a pulling plate in a sliding mode, the pulling plate is connected with the pressing rod through a supporting rod, and the fan-shaped protruding block is provided with a balance assembly. The new energy battery pack convenient for battery replacement is more convenient to install and higher in connection strength.

Description

Technical Field

[0001] The invention relates to an electric vehicle power device, in particular to a new energy battery pack which is convenient for replacing batteries. Background Art

[0002] As the application of electric vehicles becomes more and more common, the requirements for the battery life of electric vehicles are also getting higher and higher. In particular, the battery replacement method is used for battery life, that is, the exhausted battery pack is removed from the electric vehicle, and then replaced with a fully charged battery pack. In the application scenarios of electric two-wheeled vehicles, three-wheeled vehicles, and low-speed four-wheeled vehicles, the corresponding battery pack installation generally uses multiple screws to screw the battery pack onto the vehicle body; first, the battery pack is placed in the vehicle's accommodating cavity for accommodating the battery pack. The battery pack is provided with a boss with a mounting hole around it, and the accommodating cavity is provided with a threaded hole at a position corresponding to the boss. The battery pack is screwed onto the threaded hole of the accommodating cavity by screws to complete the installation of the battery pack; when disassembly is required, the screws are unscrewed one by one for disassembly; this brings two shortcomings: first, each disassembly Both the installation and unscrewing of multiple screws are required, which is relatively time-consuming, and the direct use of snaps and the like cannot meet the connection stability requirements; secondly, the local stress at the screw connection between the battery pack and the accommodating cavity is prone to deformation (especially when the vehicle is subjected to severe vibration conditions). If a plastic battery pack shell is used, it is also prone to local rupture, that is, the connection strength is not high enough; in addition, when the accommodating cavity needs a certain depth to meet the battery pack size requirements, in order to consider the installation effect, the screws will be designed to a relatively deep position, which will also bring inconvenience to disassembly and assembly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing technical defects and provide a new energy battery pack which is more convenient to install, has higher connection strength and is easy to replace batteries.

[0004] The technical solution of the present invention is to provide a new energy battery pack with the following structure for easy replacement of batteries: comprising a battery pack and a box body, wherein a cavity for accommodating the battery pack is provided in the box body, a cover plate for opening or closing the cavity is rotatably connected to the box body, and the front and rear side walls of the battery pack are respectively provided with trapezoidal bosses which are larger at the top and smaller at the bottom, and the inner wall of the box body is provided with a diagonal brace assembly for abutting against two inclined surfaces on the trapezoidal bosses, and the diagonal brace assemblies cooperate with the trapezoidal bosses in pairs; the left and right side walls of the battery pack are respectively slidably connected with limit claws with their openings facing upward, and the inner wall of the box body is provided with fan-shaped protrusions at positions corresponding to the limit claws, and the fan-shaped protrusions are in a structure which is larger at the top and smaller at the bottom; the left and right side walls of the battery pack are provided with cylindrical pins under the limit claws, and the box body The upper sliding connection is provided with a claw for engaging with or disengaging from the cylindrical pin; the battery pack is slidably connected with a slide below the limit claw, and the movement direction of the slide is perpendicular to the movement direction of the limit claw, and a connecting rod assembly for driving the claw and the slide to slide is provided between the cover plate and the box body; the slide is slidably connected with a top block for engaging with or disengaging from the limit claw, and a power assembly for driving the top block to slide on the slide to drive the limit claw and the fan-shaped protrusion to be pressed against or disengaged from the fan-shaped protrusion is provided between the top block and the box body; the fan-shaped protrusion is rotatably connected with a pressure rod for pressing against or disengaging from the inner concave surface of the limit claw, and a pull plate is slidably connected to the fan-shaped protrusion, and the pull plate is connected to the pressure rod through a support rod, and a balancing assembly for driving the pull plate to slide in one direction is provided on the fan-shaped protrusion.

[0005] As a preferred embodiment of the present invention, the cover plate is rotatably connected to the box body through the first hinge point, and the cover plate is rotatably connected to a connecting rod through the second hinge point, and the distance from the second hinge point to the first hinge point is greater than zero; the connecting rod is rotatably connected to the first rack through the third hinge point at one end away from the second hinge point, and a first guide block is provided on the box body, and the first rack is slidably connected to the first guide block through a dovetail groove; a transmission wheel for meshing and transmitting with the first rack is rotatably connected to the box body, and a second guide block is provided on the box body, and the second guide block is slidably connected to a vertical push rod through a dovetail groove, and the vertical push rod is provided with a second rack for meshing and transmitting with the transmission wheel; the vertical push rod slides in the vertical direction, and the first rack slides in the horizontal direction. The angle between the connecting rod and the first rack is an acute angle; a first tension spring is provided between the box body and the first rack for pulling the first rack to slide on the first guide block to open the cover plate, one end of the first tension spring is connected to the first rack, and the other end is connected to the box body; a horizontal support rod is provided at the lower end of the vertical push rod, and a support block is provided directly below the slide, and a groove for tightly abutting the slide is provided on the side of the support block facing the slide; the support block is connected to the claw through a pull rope, and a roller is rotatably connected to the box body, and the pull rope is wound around the roller, and a reset tension spring for tightening the pull rope is provided between the box body and the claw; the claw is slidably connected to the box body through a dovetail groove, and an opening for clamping with the cylindrical pin is provided on the side of the claw facing the cylindrical pin.

[0006] As a preferred embodiment of the present invention, the slide is fixedly connected to the guide column, the top block is slidably connected to the guide column, the top block is provided with a first magnet, and the bottom of the limit claw is provided with a blind hole for clamping with the top block; the box body is rotatably connected to a second magnet for attracting or repelling the first magnet to drive the top block to slide along the length direction of the guide column, and when the top block is clamped on the limit claw, the first magnet and the second magnet are in the same horizontal plane; the upper surface of the box body is rotatably connected to a switch knob, a transmission shaft is connected below the switch knob, the transmission shaft is arranged in the vertical direction, the second magnet is fixedly connected to the lower end of the transmission shaft, and the transmission shaft rotates between 0°-180°; the battery pack is provided with a vertical slide groove in the vertical direction, the slide is slidably connected to the vertical slide groove through a dovetail groove, and a positioning tension spring is provided between the slide and the bottom of the vertical slide groove.

[0007] As an improvement of the present invention, a third guide block is provided inside the fan-shaped protrusion, the pull plate is slidably connected to the third guide block by a dovetail groove, the pull plate slides along the vertical direction, and a first limit block and a second limit block are provided on the pull plate toward the third guide block. The first limit block and the second limit block are respectively located on both sides of the third guide block; one end of the support rod is rotatably connected to the lower end of the pull plate through a fourth hinge point, and the other end is rotatably connected to the pressure rod through a fifth hinge point; the pressure rod is rotatably connected to the fan-shaped protrusion through a sixth hinge point, and the distance between the fifth hinge point and the sixth hinge point is greater than zero; a pin is provided on the fan-shaped protrusion for tightening or disengaging with the pressure rod, the pin and the sixth hinge point are respectively located on both sides of the fifth hinge point, and the pin and the support rod are located on the same side of the pressure rod; a linear rack is fixedly connected to the pull plate, and a ratchet pawl for engaging with the linear rack is rotatably connected to the fan-shaped protrusion; a second tension spring for pulling the pull plate to reset is provided between the pull plate and the fan-shaped protrusion, and the ratchet pawl and the fan-shaped protrusion The third tension spring is provided between the blocks for pulling the ratchet pawl against the linear rack; the fan-shaped protrusion is rotatably connected to the swing rod through the seventh hinge point, and an open groove is provided on the pull plate, and the swing rod is connected to the open groove by a roller near one end of the pull plate; a support column is provided on the fan-shaped protrusion, and a sliding sleeve is slidably connected to the support column at both ends of the support column, and a first limiting ring and a second limiting ring are respectively provided on the support column, and the sliding sleeve is located between the first limiting ring and the second limiting ring, and the first compression spring and the second compression spring are sleeved on the support column. The first compression spring is located between the first limiting ring and the sliding sleeve, and the second compression spring is located between the second limiting ring and the sliding sleeve; the first gear and the second gear that are meshed with each other are rotatably connected on the fan-shaped protrusion, and a transmission rack for meshing with the second gear for transmission is provided on the pull plate; a paddle is provided on the first gear, and the paddle is located below the swing rod, and a flat plate for pressing or disengaging with the swing rod and the paddle is provided on the sliding sleeve, and the flat plate is located in the gap between the paddle and the swing rod, and the first gear, the second gear and the swing rod are located on the same side of the pull plate.

[0008] As an improvement of the present invention, the movement direction of the sliding sleeve is parallel to the movement direction of the pulling plate.

[0009] As an improvement of the present invention, an open groove is arranged on the pull plate along the horizontal direction, and the end of the swing rod can slide in the open groove.

[0010] As an improvement of the present invention, the middle part of the fan-shaped protrusion is a hollow structure, the angle between the two side walls of the fan-shaped protrusion is 40°, and the two side walls of the fan-shaped protrusion are respectively provided with lateral square holes for the pressure rod to pass through, and the upper side wall of the fan-shaped protrusion is provided with a notch for the end of the pawl to extend out; the pressure rods and support rods are arranged in pairs and are symmetrically distributed on both sides of the fourth hinge point.

[0011] As an improvement of the present invention, the limiting claw has a V-shaped structure, which is composed of a base, a first rod portion and a second rod portion. The first rod portion and the second rod portion are symmetrically distributed on the base, and the angle between the first rod portion and the second rod portion is 40°. The opening formed by the first rod portion and the second rod portion faces the fan-shaped protrusion, and the blind hole is arranged under the base; transverse guide columns are provided on the side walls of the first rod portion, the second rod portion and the base facing the battery pack, and the transverse guide columns are arranged parallel to the guide columns. A guide hole for the transverse guide columns to slide is provided on the battery pack; the first rod portion and the second rod portion are respectively pressed against or disengaged from the two side walls of the fan-shaped protrusion, and the lateral square holes on both sides of the fan-shaped protrusion are distributed at the positions where the first rod portion, the second rod portion and the fan-shaped protrusion contact.

[0012] After adopting the above structure, compared with the prior art, the new energy battery pack of the present invention, which is easy to replace batteries, places the battery pack in the cavity of the box body, and the front and rear sides of the box body are supported by the diagonal support assembly and the trapezoidal boss. The inclined surface of the trapezoidal boss and the diagonal support assembly can also be used to convert the sliding movement of the battery pack in the front and rear directions into an upward movement trend; in addition, by closing the cover plate, the cover plate drives the support rod and the pull rope to move through the connecting rod, the first rack, and the vertical push rod; the support rod drives the slide to slide on the side wall of the battery pack until the top block on the slide is embedded in the blind hole of the limit claw, and then the second magnet is driven to rotate 180° by turning the switch knob to achieve a reversing action, and then the limit claw is driven to slide in the direction of the fan-shaped protrusion through the suction force of the second magnet and the first magnet on the top block, so that the inner concave surface of the limit claw is pressed against the two side walls of the fan-shaped protrusion, so that the upward movement of the battery pack can be limited; at the same time, in the process of pulling the pull rope upward, the pull rope will pull the claw to slide until the claw is engaged with the cylindrical pin, which can also limit the bottom of the battery pack The upward movement of the area; in general, the cooperation between the trapezoidal boss and the diagonal brace assembly can realize the support of the battery pack by the box on the one hand, and the movement trend of the battery pack in the front and rear direction can be converted into the up and down direction on the other hand; the cooperation between the limit claw and the fan-shaped protrusion, the clamping claw and the cylindrical pin, and the cooperation between the lower and middle areas of the two battery packs can well limit the upward movement of the battery pack after it is installed in the box; the entire installation action only needs to close the cover plate, and there is no need to rotate any screws, so as to achieve the effect of convenient installation; in addition, after the installation is completed, when the electric vehicle encounters special terrain such as potholes, speed bumps, steep slopes, etc. while driving on the road, the sliding sleeve inside the fan-shaped protrusion will move up and down on the support column, and the flat plate on the sliding sleeve will repeatedly collide with the rocker and the paddle, and the collision process will drive the pull plate to move downward in a single way and drive the support rod and the pressure rod to rotate, so as to realize that the pressure rod is pressed against the inner concave surface of the limit claw, thereby increasing the strength between the fan-shaped protrusion and the limit claw, and thus realizing that the connection strength between the battery pack and the box is improved. In summary, the present invention provides a new energy battery pack that is more convenient to install, has higher connection strength, and is easy to replace batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a new energy battery pack for easy battery replacement according to the present invention.

[0014] Figure 2 It is a schematic diagram of the cover plate, connecting rod assembly and fan-shaped protrusions on the side wall of the box body of the present invention.

[0015] Figure 3 This is a state diagram of the cover of the present invention when it is closed.

[0016] Figure 4 It is a partial cross-sectional view of the slide, the top block, the limiting claw and the transmission shaft in the present invention.

[0017] Figure 5 It is a schematic diagram of the internal structure of the fan-shaped protrusion in the present invention.

[0018] Figure 6 It is a schematic diagram of the structure of the limiting claw in the present invention.

[0019] Figure 7 It is a schematic diagram of the position of the blind hole on the limiting claw in the present invention.

[0020] Figure 8 It is a schematic diagram of the structure inside the fan-shaped protrusion in the present invention.

[0021] Fig. 9 It is a schematic structural diagram of the limiting claw and the supporting rod in the present invention.

[0022] Fig.10 It is a schematic diagram of the structure of the cavity on the box body in the present invention.

[0023] Fig.11 It is a schematic diagram of the diagonal bracing assembly in the present invention.

[0024] As shown in the figure: 1. battery pack, 2. box body, 3. cover plate, 4. trapezoidal boss, 5. diagonal brace assembly, 6. limit claw, 6.1. base, 6.2. first rod, 6.3. second rod, 6.4. transverse guide column, 7. fan-shaped protrusion, 8. cylindrical pin, 9. slide, 10. claw, 11. top block, 12. pressure rod, 13. pull plate, 14. support rod, 15. first hinge point, 16. connecting rod, 17. second hinge point, 18. third hinge point, 19. first rack, 20. first guide block, 21. transmission wheel, 22. second guide block, 23. vertical push rod, 24. first tension spring, 25. support rod, 26. support block, 27. pull rope, 28. roller, 29. reset tension spring, 30. guide column, 31. first Magnet, 32. blind hole, 33. second magnet, 34. switch knob, 35. transmission shaft, 36. vertical slide groove, 37. positioning tension spring, 38. third guide block, 39. first limit block, 40. second limit block, 41. fourth hinge point, 42. fifth hinge point, 43. sixth hinge point, 44. pin, 45. linear rack, 46. pawl, 47. second tension spring, 48. third tension spring, 49. seventh hinge point, 50. rocker arm, 51. open groove, 52. first limit ring, 53. second limit ring, 54. support column, 55. sliding sleeve, 56. first compression spring, 57. second compression spring, 58. first gear, 59. second gear, 60. paddle, 61. flat plate, 62. lateral square hole, 63. notch. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] As shown in the figure, the new energy battery pack of the present invention is convenient for replacing batteries, including a battery pack 1 and a box body 2. The battery pack 1 is a rectangular parallelepiped / cube structure. The application scope includes: racing karts, small karts, truck-mounted, three-wheeled electric vehicles and many other scenes where battery packs need to be replaced. The nominal voltage specifications include 48V / 60V / 72V, the standard capacity includes 31AH / 60AH, the communication mode: CAN / 485 / one-line, the maximum continuous discharge is 70A, the charging current is 30A, the shell material is metal, and a cavity for accommodating the battery pack 1 is provided in the box body 2, the cavity opening faces upward, and the bottom is a closed structure; a cover plate 3 for opening or closing the cavity is rotatably connected to the box body 2, and the front and rear side walls of the battery pack 1 are respectively provided with trapezoidal bosses 4 with a larger upper part and a smaller lower part. The front and rear side walls of the battery pack 1 are respectively provided with two trapezoidal bosses 4, and the two trapezoidal bosses 4 on each side wall are spaced apart along the length direction of the battery pack 1. The front and rear side walls refer to Figure 1 The main view direction is perpendicular to the opening above the cavity and along the two side walls in the length direction; the inner wall of the box body 2 is provided with a diagonal brace assembly 5 for abutting against the two inclined surfaces on the trapezoidal boss 4, and each diagonal brace assembly 5 is composed of two inclined flat plates. The trapezoidal boss 4 refers to the interface along the side wall direction of the battery pack 1 as a trapezoidal structure, and the diagonal brace assemblies 5 cooperate with the trapezoidal boss 4 in pairs, that is, every 2 diagonal brace assemblies 5 form a pair, and this pair of diagonal brace assemblies 5 are tightly matched with the trapezoidal boss 4 at the corresponding position; when the trapezoidal boss 4 falls into the diagonal brace assembly 5 at the corresponding position, the bottom of the battery pack 1 abuts against the bottom of the cavity, and the inclined surfaces on both sides of the trapezoidal boss 4 respectively abut against the diagonal brace assembly 5; the left and right side walls of the battery pack 1 are respectively slidably connected with limit claws 6 with the opening upward, and the left and right side walls of the battery pack 1 refer to Figure 1 In the main view, the side walls adjacent to the front and rear side walls and the inner wall of the box body 2 are provided with fan-shaped protrusions 7 at positions corresponding to the limit claws 6, and the fan-shaped protrusions 7 are of a structure that is larger at the top and smaller at the bottom; the left and right side walls of the battery pack 1 are provided with cylindrical pins 8 below the limit claws 6, and the box body 2 is slidably connected with claws 10 for engaging or disengaging with the cylindrical pins 8; the battery pack 1 is slidably connected with a slide 9 below the limit claws 6, and the movement direction of the slide 9 is perpendicular to the movement direction of the limit claws 6, and a connecting rod group for driving the claws 10 and the slide 9 to slide is provided between the cover plate 3 and the box body 2 Parts; a top block 11 is slidably connected to the slide 9 for engaging with or disengaging from the limiting claw 6, and a power component is provided between the top block 11 and the box body 2 for driving the top block 11 to slide on the slide 9 to drive the limiting claw 6 to press against or disengage from the fan-shaped protrusion 7; a pressure rod 12 is rotatably connected to the fan-shaped protrusion 7 for pressing against or disengaging from the inner concave surface of the limiting claw 6, a pull plate 13 is slidably connected to the fan-shaped protrusion 7, and the pull plate 13 is connected to the pressure rod 12 through a support rod 14, and a balancing component is provided on the fan-shaped protrusion 7 for driving the pull plate 13 to slide in one direction.

[0027] The connecting rod assembly means that the cover plate 3 is rotatably connected to the box body 2 through the first hinge point 15, the cover plate 3 is rotatably connected to the connecting rod 16 through the second hinge point 17, and the distance from the second hinge point 17 to the first hinge point 15 is greater than zero; the end of the connecting rod 16 away from the second hinge point 17 is rotatably connected to the first rack 19 through the third hinge point 18, and the box body 2 is provided with a first guide block 20, and the first rack 19 is slidably connected to the first guide block 20 through a dovetail groove; the box body 2 is rotatably connected to the connecting rod 16 for The transmission wheel 21 meshes with the first rack 19 for transmission, and the box body 2 is provided with a second guide block 22, and the second guide block 22 is slidably connected to a vertical push rod 23 through a dovetail groove, and the vertical push rod 23 is provided with a second rack for meshing with the transmission wheel 21 for transmission; the vertical push rod 23 slides in the vertical direction, and the first rack 19 slides in the horizontal direction. The angle between the connecting rod 16 and the first rack 19 is an acute angle. During the rotation of the cover plate 3, the connecting rod 16 will be driven to swing to drive the first rack 19 in the first A first tension spring 24 is provided between the box body 2 and the first rack 19 for pulling the first rack 19 to slide on the first guide block 20 to prop open the cover plate 3. One end of the first tension spring 24 is connected to the first rack 19, and the other end is connected to the box body 2. A support rod 25 in a horizontal state is provided at the lower end of the vertical push rod 23. A support block 26 is provided just below the slide 9. The support block 26 is provided with a groove for tightly abutting against the slide 9 on the side facing the slide 9. The support block 26 is pulled by The rope 27 is connected to the claw 10. The box 2 is rotatably connected with a roller 28. The pull rope 27 is wound around the roller 28. The roller 28 can guide the force applied by the pull rope 27 to the claw 10, so that the claw 10 slides more smoothly on the box 2. A reset spring 29 for tightening the pull rope 27 is provided between the box 2 and the claw 10; the claw 10 is slidably connected to the box 2 through a dovetail groove, and the claw 10 is provided with an opening for engaging with the cylindrical pin 8 on the side facing the cylindrical pin 8. There are two cylindrical pins 8 on the left and right side walls of the battery pack 1, respectively. The two cylindrical pins 8 are symmetrically distributed on the side walls, and there are also two corresponding claws 10; the pull rope 27 is divided into two in the roller 28 area, which are fixedly connected to the two claws 10 respectively.

[0028] The power assembly means that the slide 9 is fixedly connected with a guide column 30, the top block 11 is slidably connected to the guide column 30, there are two guide columns 30, and two limit rings are provided on the guide column 30, the top block 11 slides in the guide column 30 between the two limit rings; a first magnet 31 is provided on the top block 11, and a blind hole 32 for engaging with the top block 11 is provided at the bottom of the limit claw 6; a second magnet 33 for attracting or repelling the first magnet 31 to drive the top block 11 to slide along the length direction of the guide column 30 is rotatably connected to the box body 2. When the top block 11 is engaged with the limit claw 6, The first magnet 31 and the second magnet 33 are on the same horizontal plane; a switch knob 34 is rotatably connected to the upper surface of the box body 2, and a transmission shaft 35 is connected below the switch knob 34. The transmission shaft 35 is rotatably connected to the box body 2 through a bearing, and the transmission shaft 35 is arranged in the vertical direction. The second magnet 33 is fixedly connected to the lower end of the transmission shaft 35, and the transmission shaft 35 rotates between 0°-180°; a vertical slide groove 36 is provided in the vertical direction of the battery pack 1, and the slide 9 is slidably connected to the vertical slide groove 36 through a dovetail groove, and a positioning tension spring 37 is provided between the slide 9 and the bottom of the vertical slide groove 36. Specifically, the first magnet 31 is in a state where the N pole is facing the fan-shaped protrusion 7 and the S pole is away from the fan-shaped protrusion 7. When the switch knob 34 is in an open state, the second magnet 33 is in an N pole facing the limit claw 6 and the S pole is away from the limit claw 6, that is, the first magnet 31 and the second magnet 33 repel each other, and the first magnet 31 and the top block 11 are pushed to the right limit position (at this limit position, the top block 11 is just inserted into the blind hole 32 of the limit claw 6); when the switch knob 34 is rotated to make the transmission shaft 35 rotate 180°, that is, when the switch knob 34 is in a closed state, the second magnet is in an N pole away from the limit claw 6 and the S pole toward the limit claw 6, that is, the first magnet 31 and the second magnet 33 attract each other, and the first magnet 31 is driven by the attraction to slide the top block 11 and the limit claw 6 toward the direction of the fan-shaped protrusion 7 until the fan-shaped protrusion 7 and the limit claw 6 complete contact and fit.

[0029] The balancing assembly means that a third guide block 38 is provided inside the fan-shaped protrusion 7, the pull plate 13 is slidably connected to the third guide block 38 through a dovetail groove, the pull plate 13 slides in the vertical direction, and a first limit block 39 and a second limit block 40 are provided on the pull plate 13 facing the third guide block 38, which are used to press against or disengage from the third guide block 38, and the first limit block 39 and the second limit block 40 are respectively located on both sides of the third guide block 38; one end of the support rod 14 is rotatably connected to the lower end of the pull plate 13 through a fourth hinge point 41, and the other end is rotatably connected to the pressure rod 12 through a fifth hinge point 42; the pressure rod 12 is rotatably connected to the fan-shaped protrusion 7 through a sixth hinge point 43, and the fifth hinge point 42 is connected to The distance between the sixth hinge point 43 is greater than zero; a pin 44 for pressing against or disengaging from the pressure rod 12 is provided on the fan-shaped protrusion 7, and the pin 44 and the sixth hinge point 43 are respectively located on both sides of the fifth hinge point 42, and the pin 44 and the support rod 14 are located on the same side of the pressure rod 12; the pressure rod 12 and the support rod 14 are grouped in pairs, symmetrically distributed on both sides of the pull plate 13, so that the force on the limit claw 6 is more balanced; a linear rack 45 is fixedly connected to the pull plate 13, and a ratchet 46 for engaging with the linear rack 45 is rotatably connected to the fan-shaped protrusion 7; a second tension spring 47 for pulling the pull plate 13 to reset is provided between the pull plate 13 and the fan-shaped protrusion 7, and a second tension spring 47 for pulling the pull plate 13 to reset is provided between the ratchet 46 and the fan-shaped protrusion 7 The third tension spring 48 is used to pull the ratchet 46 against the linear rack 45; the ratchet 46 limits the upward movement of the linear rack 45, and the ratchet 46 can be moved slightly to rotate when the linear rack 45 moves downward, but the ratchet 46 always rests on the linear rack 45; when the battery pack needs to be removed, the end of the ratchet 46 can be disengaged from the linear rack 45 by moving the ratchet 46, and then the second tension spring 47 pulls the linear rack 45 and the pull plate 13 to reset; the fan-shaped protrusion 7 is rotatably connected to the swing rod 50 through the seventh hinge point 49, and the pull plate 13 is provided with an open groove 51, and the end of the swing rod 50 close to the pull plate 13 is rolled and connected to the open groove 51 by a roller 1; a support column 54 is provided on the fan-shaped protrusion 7, and a sliding sleeve 55 is slidably connected to the support column 54. A guide mechanism is used between the support column 54 and the sliding sleeve 55 to limit the sliding sleeve 55 to slide back and forth along the length direction of the support column 54. A first limiting ring 52 and a second limiting ring 53 are provided at both ends of the support column 54, and the sliding sleeve 55 is located between the first limiting ring 52 and the second limiting ring 53. A first compression spring 56 and a second compression spring 57 are sleeved on the support column 54. The first compression spring 56 is located between the first limiting ring 52 and the sliding sleeve 55, and the second compression spring 57 is located between the second limiting ring 53 and the sliding sleeve 55; the sliding sleeve 55 has a certain weight and acts as a counterweight, for example 2.5kg, 5kg, improve the sensitivity of the sliding sleeve 55 when the vehicle passes through a bumpy road; the fan-shaped protrusion 7 is rotatably connected with a first gear 58 and a second gear 59 that mesh with each other, and the pull plate 13 is provided with a transmission rack for meshing with the second gear 59; the first gear 58 is provided with a paddle 60, and the paddle 60 is located below the swing rod 50. The sliding sleeve 55 is provided with a flat plate 61 for pressing against or disengaging with the swing rod 50 and the paddle 60. The flat plate 61 is located in the gap between the paddle 60 and the swing rod 50. The first gear 58, the second gear 59, and the swing rod 50 are located on the same side of the pull plate 13. The paddle 60 and the left end of the swing rod 50 slide back and forth on the flat plate 61. The arrangement of the first compression spring 56 and the second compression spring 57 can increase the frequency of the sliding sleeve 55 sliding back and forth on the support column 54 and increase the impact force between the flat plate 61 on the sliding sleeve 55 and the paddle and the swing rod 50. .

[0030] The movement direction of the sliding sleeve 55 is parallel to the movement direction of the pulling plate 13 .

[0031] The opening slot 51 is arranged on the pull plate 13 along the horizontal direction, so that the opening slot 51 can compensate for the deviation of the swing rod 50 in the horizontal direction.

[0032] The middle part of the fan-shaped protrusion 7 is a hollow structure, the angle between the two side walls of the fan-shaped protrusion 7 is 40°, and the two side walls of the fan-shaped protrusion 7 are respectively provided with lateral square holes 62 for the pressure rod 12 to pass through, and the upper side wall of the fan-shaped protrusion 7 is provided with a notch 63 for the end of the pawl 46 to extend out; the pressure rod 12 and the support rod 14 are arranged in pairs, symmetrically distributed on both sides of the fourth hinge point 41, and the downward movement of the pull plate 13 will drive the support rods 14 on the left and right sides to rotate, and the rotation of the support rod 14 will drive the pressure rod 12 to rotate and extend from the lateral square hole 62 until the pressure rod 12 rests on the inner concave surface of the limit claw 6.

[0033] The limiting claw 6 is a V-shaped structure, which consists of a base 6.1, a first rod 6.2 and a second rod 6.3, that is, the pressure rod 12 on the left side of the fan-shaped protrusion 7 is tightly pressed against the first rod 6.2, and the pressure rod 12 on the right side of the fan-shaped protrusion 7 is tightly pressed against the second rod 6.3. The first rod 6.2 and the second rod 6.3 are symmetrically distributed on the base 6.1, and the angle between the first rod 6.2 and the second rod 6.3 is 40°. The opening formed by the first rod 6.2 and the second rod 6.3 faces the fan-shaped protrusion 7, and the blind hole 32 is arranged below the base 6.1; the first The rod portion 6.2, the second rod portion 6.3 and the base 6.1 are all provided with transverse guide columns 6.4 on the side walls facing the battery pack 1. The transverse guide columns 6.4 can provide guidance and support for the sliding of the limit claw 6. The transverse guide columns 6.4 are arranged parallel to the guide columns 30, and the battery pack 1 is provided with guide holes for the transverse guide columns 6.4 to slide; the first rod portion 6.2 and the second rod portion 6.3 are respectively pressed against or separated from the two side walls of the fan-shaped protrusion 7, and the lateral square holes 62 on both sides of the fan-shaped protrusion 7 are distributed at the positions where the first rod portion 6.2, the second rod portion 6.3 and the fan-shaped protrusion 7 are in contact.

[0034] Working principle: First, the cavity on the box 2 is Fig.10 The box 2 is in an open state, that is, the box body 2 is in an empty state, and the battery pack 1 to be installed is placed in the cavity of the box body 2; the two trapezoidal bosses 4 on the front side of the battery pack 1 abut against the two diagonal brace assemblies 5 on the front side of the cavity, the two trapezoidal bosses 4 on the rear side of the battery pack 1 abut against the two diagonal brace assemblies 5 on the rear side of the cavity, and the bottom of the battery pack 1 abuts against the bottom of the cavity; at this time, the slide 9 is located on the support block 26 of the support rod 25, the limit claw 6 is located at the position corresponding to the fan-shaped protrusion 7, and the state of the cover plate 3 and the box body 2 is as shown in FIG. Figure 2 As shown;

[0035] Subsequently, the cover plate 3 is closed to drive the connecting rod 16 to swing, and the connecting rod 16 pushes the first rack 19 to slide on the first guide block 20, and the first tension spring 24 is stretched; the first rack 19 drives the vertical push rod 23 to slide upward through the transmission wheel 21, and the support block 26 at the lower end of the vertical push rod 23 pushes the slide 9 to slide upward in the vertical slide groove 36 until the top block 11 on the slide 9 is embedded in the blind hole 32 of the limit claw 6; during the upward sliding process of the slide 9, the switch knob 34 on the box body 2 is in an open state, that is, the second magnet 33 and the first magnet 31 are in a state of repulsion, so that the top block 11 is always in the right limit position of the guide column 30 during the upward sliding process, ensuring that the top block 11 can be embedded in the blind hole 32; during the rising process of the support rod 25, the support rod 25 will also drive the claw 10 to slide through the pull rope 27 until the claw 10 is engaged with the cylindrical pin 8, thereby limiting the movement of the lower end area of ​​the battery pack 1;

[0036] Next, turn the switch knob 34 to rotate the transmission shaft 35 180° to the closed state, and lock the cover 3 with the key, the transmission shaft 35 drives the second magnet 33 to rotate 180°, realizing the reversing action of the second magnet 33, that is, the force between the second magnet 33 and the first magnet 31 is transformed from repulsive force to attractive force, then the first magnet 31 will be driven by the attractive force to slide to the left on the guide column 30, that is, the first magnet 31 and the top block 11 drive the limiting claw 6 to slide toward the fan-shaped protrusion 7 until the top block 11 slides to the left limit position of the guide column 30, and in this position, the limiting claw 6 is just located below the fan-shaped protrusion 7, and the inner concave surface of the limiting claw 6 contacts the outer convex surface of the fan-shaped protrusion 7 to limit the upward movement of the limiting claw 6 and the battery pack 1; specifically, the battery The lower areas of the left and right ends of the battery pack 1 are restricted by the claws 10 on the cylindrical pins 8, and the middle areas of the left and right ends of the battery pack 1 are restricted by the fan-shaped protrusions 7 on the limiting claws 6, so that the forces on the two ends of the battery pack 1 are more balanced, avoiding local deformation caused by local stress concentration; in this state, the front and rear sides of the battery pack 1 are constrained by the diagonal support assembly 5 and the trapezoidal boss 4 to support the middle area of ​​the battery pack 1, and the inertia of the battery pack 1 during the acceleration, braking and other forward and backward movements of the vehicle during driving will be converted into an upward movement trend of the battery pack by the written inclination in the diagonal support assembly 5; and the upward movement trend of the battery pack 1 is constrained by the fan-shaped protrusions 7 and the limiting claws 6, the claws 10 and the cylindrical pins 8 at the two ends, thereby making the installation process of the entire battery pack 1 very convenient and the installation effect very reliable;

[0037] After the battery pack 1 is installed, when the electric vehicle encounters a bumpy road during driving, the electric vehicle will vibrate and shake, and the body of the electric vehicle will cause the sliding sleeve 55 inside the fan-shaped protrusion 7 on the box body 2 to move up and down during the vibration process. When the sliding sleeve 55 moves up and down on the support column 54, the flat plate 61 on the sliding sleeve 55 will collide with the swing rod 50 and the paddle 60 alternately. When the flat plate 61 collides upward with the left end of the swing rod 50, the swing rod 50 rotates clockwise around the seventh hinge point 49, and the right end of the swing rod 50 moves downward to push the pull plate 13 to move downward; when the flat plate 61 collides downward with the paddle 60, the first gear 58 rotates counterclockwise, and the first gear 58 drives the second gear 59 to rotate clockwise, and the second gear 59 is driven by the transmission rack meshing transmission Drive the pull plate 13 to move downward; that is to say, no matter whether the sliding sleeve 55 moves upward or downward, the pull plate 13 will eventually move downward, and the upward resetting movement of the pull plate 13 is constrained by the pawl 46 on the linear rack 45; and the downward movement of the pull plate 13 will push the support rod 14 and the pressure rod 12 to rotate, and the pressure rod 12 will disengage from the pin 44 until the pressure rod 12 passes through the lateral square hole 62 and is pressed against the inner concave surface of the limiting claw 6, that is, every tremor and vibration of the vehicle further consolidates the connection strength of the battery pack 1; the more the pull plate 13 moves downward, the greater the clamping force between the pressure rod 12 and the inner concave surface of the limiting claw 6, thereby improving the connection strength between the fan-shaped protrusion 7 and the limiting claw 6, thereby improving the strength and stability of the battery pack 1 installed in the box body 2.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the claims of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new energy battery pack for easy replacement of batteries, comprising a battery pack (1) and a box (2), wherein a cavity is provided in the box (2), and a cover plate (3) is rotatably connected to the box (2), characterized in that: The front and rear side walls of the battery pack (1) are respectively provided with a trapezoidal boss (4), and the inner wall of the box body (2) is provided with a diagonal brace assembly (5) for pressing against two inclined surfaces on the trapezoidal boss (4); the side walls of the battery pack (1) are respectively slidably connected with a limit claw (6), and the inner wall of the box body (2) is provided with a fan-shaped protrusion (7); the side walls of the battery pack (1) are provided with a cylindrical pin (8), and the box body (2) is slidably connected with a claw (10) for engaging or disengaging with the cylindrical pin (8); the battery pack (1) is slidably connected with a slide frame (9) below the limit claw (6), and a drive claw (10) and a slide frame are provided between the cover plate (3) and the box body (2). (9) a sliding connecting rod assembly; a top block (11) for engaging or disengaging with the limiting claw (6) is slidably connected to the slide (9); a power assembly for driving the top block (11) to slide on the slide (9) to drive the limiting claw (6) and the fan-shaped protrusion (7) to be pressed or disengaged is provided between the top block (11) and the box body (2); a pressure rod (12) is rotatably connected to the fan-shaped protrusion (7); a pull plate (13) is slidably connected to the fan-shaped protrusion (7); the pull plate (13) is connected to the pressure rod (12) through a support rod (14); and a balancing assembly for driving the pull plate (13) to slide in one direction is provided on the fan-shaped protrusion (7).

2. The new energy battery pack for easy battery replacement according to claim 1 is characterized in that: The connecting rod assembly refers to a cover plate (3) being rotatably connected to a box body (2) via a first hinge point (15), a cover plate (3) being rotatably connected to a connecting rod (16) via a second hinge point (17), and a distance between the second hinge point (17) and the first hinge point (15) being greater than zero; an end of the connecting rod (16) away from the second hinge point (17) being rotatably connected to a first rack (19) via a third hinge point (18), a first guide block (20) being provided on the box body (2), and the first rack (19) being slidably connected to the box body (2) via a dovetail groove. The first guide block (20) is rotatably connected to the housing (2) with a transmission wheel (21) for meshing with the first rack (19), the housing (2) is provided with a second guide block (22), the second guide block (22) is slidably connected to a vertical push rod (23) through a dovetail groove, and the vertical push rod (23) is provided with a second rack for meshing with the transmission wheel (21); the vertical push rod (23) slides in a vertical direction, the first rack (19) slides in a horizontal direction, and the connecting rod (16) and the first rack (19) are connected. The angle between the two is an acute angle; a first tension spring (24) is provided between the box body (2) and the first rack (19) for pulling the first rack (19) to slide on the first guide block (20) to open the cover plate (3); one end of the first tension spring (24) is connected to the first rack (19), and the other end is connected to the box body (2); a support rod (25) in a horizontal state is provided at the lower end of the vertical push rod (23); a support block (26) is provided directly below the slide frame (9), and the support block (26) is directed toward the slide frame (9). A groove for pressing against the slide (9) is provided on the side; the support block (26) is connected to the claw (10) through a pull rope (27); a roller (28) is rotatably connected to the box body (2), the pull rope (27) is wound around the roller (28), and a reset spring (29) for tightening the pull rope (27) is provided between the box body (2) and the claw (10); the claw (10) is slidably connected to the box body (2) through a dovetail groove, and an opening for clamping with the cylindrical pin (8) is provided on the side of the claw (10) facing the cylindrical pin (8).

3. The new energy battery pack for easy battery replacement according to claim 2 is characterized in that: The power assembly refers to a slide (9) fixedly connected to a guide column (30), a top block (11) slidably connected to the guide column (30), a first magnet (31) being provided on the top block (11), and a blind hole (32) for engaging with the top block (11) being provided at the bottom of the limit claw (6); a second magnet (33) for attracting or repelling the first magnet (31) to drive the top block (11) to slide along the length direction of the guide column (30) being rotatably connected to the box body (2); when the top block (11) is engaged with the limit claw (6), the first magnet (31) and the second magnet (33) are engaged with each other. ) are on the same horizontal plane; a switch knob (34) is rotatably connected to the upper surface of the box body (2); a transmission shaft (35) is connected below the switch knob (34); the transmission shaft (35) is arranged in a vertical direction; a second magnet (33) is fixedly connected to the lower end of the transmission shaft (35); the transmission shaft (35) rotates between 0° and 180°; a vertical slide groove (36) is provided in the vertical direction of the battery pack (1); a slide bracket (9) is slidably connected to the vertical slide groove (36) through a dovetail groove; a positioning tension spring (37) is provided between the slide bracket (9) and the bottom of the vertical slide groove (36).

4. The new energy battery pack for easy battery replacement according to claim 1 is characterized in that: The balancing component refers to a third guide block (38) being provided inside the fan-shaped protrusion (7), the pull plate (13) being slidably connected to the third guide block (38) through a dovetail groove, the pull plate (13) slidingly slides in a vertical direction, and a first limit block (39) and a second limit block (40) for pressing against or disengaging from the third guide block (38) are provided on the pull plate (13) on one side facing the third guide block (38), the first limit block (39) and the second limit block (40) being respectively located on both sides of the third guide block (38); one end of the support rod (14) is rotatably connected to the lower end of the pull plate (13) through a fourth hinge point (41), and the other end is rotatably connected to the pressure rod (12) through a fifth hinge point (42); the pressure rod (12) is rotatably connected to the fan-shaped protrusion through a sixth hinge point (43). The distance between the fifth hinge point (42) and the sixth hinge point (43) on the block (7) is greater than zero; a pin (44) for pressing against or disengaging from the pressure rod (12) is provided on the fan-shaped protrusion (7); the pin (44) and the sixth hinge point (43) are respectively located on both sides of the fifth hinge point (42), and the pin (44) and the support rod (14) are located on the same side of the pressure rod (12); a linear rack (45) is fixedly connected to the pull plate (13), and a ratchet (46) for engaging with the linear rack (45) is rotatably connected to the fan-shaped protrusion (7); a second tension spring (47) for pulling the pull plate (13) to reset is provided between the pull plate (13) and the fan-shaped protrusion (7), and a spring for pulling the ratchet (46) to press against or disengage from the pressure rod (12) is provided between the ratchet (46) and the fan-shaped protrusion (7). A third tension spring (48) rests on the linear rack (45); the fan-shaped protrusion (7) is rotatably connected to a swing rod (50) through a seventh hinge point (49); an open groove (51) is provided on the pull plate (13); one end of the swing rod (50) close to the pull plate (13) is rollingly connected in the open groove (51) through a roller; a support column (54) is provided on the fan-shaped protrusion (7); a sliding sleeve (55) is slidably connected to the support column (54); a first limiting ring (52) and a second limiting ring (53) are respectively provided at both ends of the support column (54); the sliding sleeve (55) is located between the first limiting ring (52) and the second limiting ring (53); a first compression spring (56) and a second compression spring (57) are sleeved on the support column (54); the first compression spring (56) is located at the first limiting ring (52) and the second limiting ring (53); A limiting ring (52) and a sliding sleeve (55) are provided between the second limiting ring (53) and the sliding sleeve; a first gear (58) and a second gear (59) are rotatably connected on the fan-shaped protrusion (7) and meshed with each other; a transmission rack for meshing with the second gear (59) is provided on the pull plate (13); a paddle (60) is provided on the first gear (58), and the paddle (60) is located below the swing rod (50); a flat plate (61) is provided on the sliding sleeve (55) for pressing against or separating from the swing rod (50) and the paddle (60), and the flat plate (61) is located in the gap between the paddle (60) and the swing rod (50); the first gear (58), the second gear (59) and the swing rod (50) are located on the same side of the pull plate (13).

5. The new energy battery pack for easy battery replacement according to claim 4 is characterized in that: The moving direction of the sliding sleeve (55) is parallel to the moving direction of the pulling plate (13).

6. The new energy battery pack for easy battery replacement according to claim 4 is characterized in that: The opening groove (51) is arranged on the pulling plate (13) along the horizontal direction.

7. The new energy battery pack for easy battery replacement according to claim 4 is characterized in that: The middle part of the fan-shaped protrusion (7) is a hollow structure, the angle between the two side walls of the fan-shaped protrusion (7) is 40 degrees, and the two side walls of the fan-shaped protrusion (7) are respectively provided with lateral square holes (62) for the pressure rod (12) to pass through, and the upper side wall of the fan-shaped protrusion (7) is provided with a notch (63) for the end of the ratchet (46) to extend out; the pressure rod (12) and the support rod (14) are arranged in pairs and symmetrically distributed on both sides of the fourth hinge point (41).

8. The new energy battery pack for easy battery replacement according to claim 3 or 7, characterized in that: The limiting claw (6) is in a V-shaped structure, and is composed of a base (6.1), a first rod portion (6.2) and a second rod portion (6.3). The first rod portion (6.2) and the second rod portion (6.3) are symmetrically distributed on the base (6.1), and the angle between the first rod portion (6.2) and the second rod portion (6.3) is 40°. The opening formed by the first rod portion (6.2) and the second rod portion (6.3) faces the fan-shaped protrusion (7), and the blind hole (32) is arranged below the base (6.1); the first rod portion (6.2), the second rod portion (6.3) are symmetrically distributed on the base (6.1), and the angle between the first rod portion (6.2) and the second rod portion (6.3) is 40°. 3) and the base (6.1) are all provided with a transverse guide column (6.4) on the side wall facing the battery pack (1), the transverse guide column (6.4) is arranged parallel to the guide column (30), and the battery pack (1) is provided with a guide hole for the transverse guide column (6.4) to slide; the first rod portion (6.2) and the second rod portion (6.3) are respectively pressed against or separated from the two side walls of the fan-shaped protrusion (7), and the lateral square holes (62) on the two sides of the fan-shaped protrusion (7) are distributed at the position where the first rod portion (6.2) and the second rod portion (6.3) contact the fan-shaped protrusion (7).

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