Quick connecting structure for body and chassis of electric automobile and automobile

Abstract

The invention relates to the technical field of sliding plate chassis of automobiles, and discloses an electric automobile body and chassis quick connecting structure which comprises an electric automobile sliding plate chassis and an automobile body electric connecting rod hooking mechanism. A chassis containing groove is formed in the middle of the upper surface of the electric automobile sliding plate chassis and corresponds to each automobile body electric connecting rod hooking mechanism. The motor end of each vehicle body electric connecting rod hooking mechanism is rotationally connected to the inner wall of the corresponding chassis containing groove, the hooking end of each vehicle body electric connecting rod hooking mechanism is rotationally connected to the inner wall of the chassis containing groove in the corresponding side, and each vehicle body electric connecting rod hooking mechanism can be hooked and fixed to the corresponding end face of the vehicle body; each pair of vehicle body electric connecting rod hooking mechanisms is arranged on the upper surface of the electric vehicle sliding plate chassis in an aligned or staggered manner; the structure is greatly simplified, the mechanical unlocking and locking error-tolerant rate is high, system functions are prevented from being affected by faults of electromagnetic parts, and the robustness of an automobile is good.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile skateboard chassis, and in particular to a quick connection structure between an electric vehicle body and a chassis and an automobile. Background Art

[0002] Compared with traditional fuel vehicles, electric vehicles have greatly simplified the power system structure, and changing the wheelbase has become simpler, making skateboard chassis technology receive more and more attention; the characteristics of the skateboard chassis include: 1. High integration: various automotive components (such as power system, suspension system, braking system, etc.) are concentrated in a shared chassis, which helps to simplify the design and manufacturing process; 2. Scalability: The design of the skateboard chassis allows manufacturers to easily adjust the size, weight and other performance parameters of the vehicle to meet different market needs; 3. Modularity: The various components of the skateboard chassis can be upgraded or replaced independently, which makes repair and maintenance more convenient and economical; 4. Reduced costs: By sharing parts and simplifying production lines, the skateboard chassis helps to reduce manufacturing costs; 5. Improved safety: Because the chassis components are concentrated together, it is easier to perform collision tests and safety assessments.

[0003] Skateboard chassis technology can realize the decoupled design and development of electric vehicle body and chassis, shorten the R&D cycle and reduce R&D costs. However, the problem of how to achieve effective connection between the electric vehicle body and the skateboard chassis has hindered the promotion of skateboard chassis technology and the feasibility of expanding the usage scenarios of a single vehicle by replacing different types of cabins. Traditional connection methods are mainly achieved through bolts, welding or bonding. These connection methods have the disadvantages of being difficult to disassemble and not fully automatic, making the connection and separation of the car body and the skateboard chassis extremely inconvenient.

[0004] Chinese application publication number CN118597266A, the present invention discloses a device for connecting and disconnecting a car body and a skateboard chassis, comprising a car body, a skateboard chassis, an electromagnet commutator, an upper electromagnet, a lower electromagnet, a bearing sleeve, a built-in power supply and a hydraulic drive device, wherein the lower end of the car body opposite to the skateboard chassis is provided with an upper electromagnet, the upper end of the skateboard chassis is correspondingly provided with a lower electromagnet, the two ends of the upper magnet coil of the upper electromagnet are respectively electrically connected to the two conductive ends at one end of the electromagnet commutator, the bearing sleeve is provided with a built-in power supply, two bearing sleeve contacts are provided on the bearing sleeve, the two bearing sleeve contacts are respectively connected to the positive and negative poles of the built-in power supply, the bearing sleeve is respectively electrically connected to the two conductive ends at the other end of the electromagnet commutator through the bearing sleeve contacts, and the hydraulic drive device is used to drive the bearing sleeve to rotate to change the connection relationship between the two bearing sleeve contacts and the conductive ends; this application realizes the connection or separation of the car body and the skateboard chassis through a set of hydraulic devices and electromagnets. The system is too complicated and has poor robustness. Summary of the Invention

[0005] To solve the above problems, the present invention provides a quick connection structure between the body and chassis of an electric vehicle. The present invention adopts a multi-link mechanism driven by an independent electric cylinder and a fixed rod to realize the connection and separation of the body and the skateboard chassis. The structure is greatly simplified, the mechanical unlocking fault tolerance rate is high, and the electromagnetic component failure is prevented from affecting the system function, and the robustness of the vehicle is good.

[0006] The present invention provides a quick connection structure between the body and chassis of an electric vehicle, comprising an electric vehicle skateboard chassis and at least one pair of electric connecting rod hooking mechanisms with the body;

[0007] A chassis accommodating groove is provided in the middle of the upper surface of the chassis of the electric vehicle skateboard corresponding to each of the electric connecting rod hooking mechanisms with the vehicle body;

[0008] The motor end of each of the electric linkage mechanisms connected to the vehicle body is rotatably connected to the inner wall of the corresponding chassis accommodating groove, and the hooking end of each of the electric linkage mechanisms connected to the vehicle body is rotatably connected to the inner wall of the chassis accommodating groove on the corresponding side. Each of the electric linkage mechanisms connected to the vehicle body can be hooked and fixed to the corresponding end surface of the vehicle body. The structure is simple, the production cost is low, the mechanical unlocking fault tolerance rate is high, and the failure rate is low.

[0009] Each pair of the mechanisms for hooking with the electric connecting rods of the vehicle body is arranged in alignment or in staggered arrangement on the upper surface of the electric vehicle skateboard chassis.

[0010] Each of the above-mentioned mechanisms for coupling with the electric connecting rod of the vehicle body includes a first servo electric cylinder, a first hinge plate, a second hinge plate and a coupling rod; the motor end of the first servo electric cylinder is hinged to the first hinge plate, the first hinge plate is fixed on the side wall of one end of the corresponding chassis accommodating groove, the second hinge plate is fixed on the side wall of the chassis accommodating groove away from the motor end of the first servo electric cylinder, the tail end of the coupling rod is hinged to the second hinge plate, and the telescopic arm end of the first servo electric cylinder is hinged to the middle part of the coupling rod through a double pin hole, and a coupling part is provided at the front end of the coupling rod, which can be coupled and fixed to the corresponding end face of the vehicle body, and the two coupling rods have a simple structure, fast coupling and strong stability.

[0011] The camming mechanism of each electric connecting rod of the vehicle body comprises a first servo electric cylinder, a first hinge plate, a second hinge plate, a hook connecting rod, a third hinge plate, a crank arm connecting rod and a straight arm connecting rod; the motor end of the first servo electric cylinder is hinged to the first hinge plate, and the first servo electric cylinder is not fixedly connected to the chassis accommodating groove, so as to prevent the first servo electric cylinder from generating torque with other connecting rods when the telescopic arm is extended, causing the telescopic jamming phenomenon; the first hinge plate is fixed on the side wall of one end of the chassis accommodating groove in the corresponding position, and the telescopic arm of the first servo electric cylinder is hinged to one end of the crank arm connecting rod through a double pin hole, and the first The three hinged plates are fixed on the bottom wall of the corresponding chassis accommodating groove, the bent part of the crank arm connecting rod is hinged on the third hinged plate, the other end of the crank arm connecting rod is hinged to the tail end of the hook connecting rod, the second hinged plate is fixed on the side wall of the chassis accommodating groove away from the motor end of the first servo electric cylinder, the tail end of the straight arm connecting rod is hinged on the second hinged plate, the front end of the straight arm connecting rod is hinged to the middle part of the hook connecting rod, and the front end of the hook connecting rod is provided with a hooking part, which can be hooked and fixed with the corresponding end face of the vehicle body. The four-link structure has a high fault tolerance rate, which avoids the failure of electromagnetic parts in the existing technology and thus affects the system function.

[0012] The included angle between the two bending arms of the crank link is an obtuse angle, and the range of the included angle is 95°-130°.

[0013] A car includes a car body and a quick connection structure between the electric car body and the chassis. The lower end surface of the car body can be matched, fitted and fixed with the upper surface of the chassis of the electric car skateboard; the lower end surface of the car body is provided with a downwardly opening car body hooking accommodating groove corresponding to the position of each hooking part; a fixing rod is horizontally connected between a pair of side walls of the car body hooking accommodating groove corresponding to the movement track of the hooking part, and the hooking part at the front end of the corresponding hooking rod can be hooked and fixed with the fixing rod, thereby reducing the impact of electromagnetic component failure in the prior art on the entire electric car system.

[0014] A car also includes a pair of electric body lifting devices, which are both arranged on the lower end surface of the same side of the car body; the electric body lifting device includes an L-shaped support arm plate exposed on the lower end surface of the car body, the L-shaped support arm plate can be vertically displaced up and down, and the upper end surface of its long arm can be fitted and fixed to the lower end surface of the electric car skateboard chassis, the car body and the L-shaped support arm plate can clamp and fix the middle part of the electric car skateboard chassis, so as to realize the feasibility of expanding the use scenario of a single electric car skateboard chassis by replacing different types of cabin bodies, an L-shaped support arm plate driven by an electric cylinder and its controller are installed under the side of the car body, which can extend to support the ground when the skateboard chassis is separated from the car body, thereby realizing self-lifting and support of the car body, and cooperating with the side movement of the skateboard chassis to realize automatic and rapid separation of the car body and the skateboard chassis.

[0015] A pair of longitudinal long grooves with lower ends open are arranged front and back on the same side in the width direction of the lower end surface of the vehicle body, and each longitudinal long groove has a fixing plate fixed at the open end thereof, and the fixing plate and the matching longitudinal long groove constitute an electric cylinder accommodating cavity; the vehicle body electric lifting device also includes a second servo electric cylinder, the motor end of the second servo electric cylinder is accommodated in the electric cylinder accommodating cavity, the motor end of the second servo electric cylinder is fixed to the inner surface of the fixing plate, the telescopic end of the second servo electric cylinder can be slidably sleeved on the fixing plate, and the front of the telescopic end of the second servo electric cylinder is exposed. Outside the outer surface of the fixed plate, the front part of the telescopic end of the second servo electric cylinder and the upper end surface of the short arm of the L-shaped support arm plate are connected to each other, and the L-shaped support arm plate can be moved up and down synchronously with the second servo electric cylinder; an L-shaped support arm plate and its controller are installed at the lower side of the vehicle body. When the L-shaped support arm plate moves away from the skateboard chassis, the limitation of the L-shaped support arm plate on the skateboard chassis can be released. The telescopic arm of the second servo electric cylinder continues to extend, which can make the L-shaped support arm plate contact with the ground and then lift the vehicle body, realizing self-lifting and support of the vehicle body, and cooperating with the lateral movement of the skateboard chassis to realize automatic and rapid separation.

[0016] The fixing plate is provided with a sliding rod sleeve, and a sliding rod is vertically provided on the upper end surface of the short arm of the L-shaped support arm plate corresponding to the position of the sliding rod sleeve, and the sliding rod is slidably sleeved in the sliding rod sleeve; a hinge part is protruding from the upper end surface of the short arm of the L-shaped support arm plate corresponding to the telescopic end position of the second servo electric cylinder, and the double pin holes at the front of the telescopic end of the second servo electric cylinder are hinged to the hinge part through a hinge shaft. The horizontal opening direction of the hinge hole of the hinge part is perpendicular to the length direction of the long arm surface of the L-shaped support arm plate. The purpose of setting the sliding rod is to prevent the telescopic arm of the second servo electric cylinder from tilting relative to the fixed plate perforation due to the weight of the L-shaped support arm plate The increase in oblique friction causes the telescopic arm of the second servo electric cylinder to be locked on the fixed plate and unable to complete telescopic extension. The slide rod slides up and down in the slide rod sleeve with lubricating oil applied inside, playing the main guiding and supporting role, and the double pin holes of the second servo electric cylinder are rotatably connected to the hinge part through the hinge shaft. When the far end of the long arm surface of the L-shaped support arm plate tilts downward due to gravity, the telescopic end of the second servo electric cylinder will not be tilted relative to the fixed plate due to the torsion force due to the hinged connection with the short arm end of the L-shaped support arm plate. This avoids the failure of the telescopic arm of the second servo electric cylinder being locked by the fixed plate and unable to complete telescopic extension.

[0017] The vehicle body also includes a cockpit domain controller, and the second servo electric cylinder is connected to the cockpit domain controller by wires to realize the function of independently electrically controlling the electric lifting device to release the limit on the skateboard chassis and thereby lift the vehicle body. The electric vehicle skateboard chassis also includes a chassis domain controller, and the first servo electric cylinder is connected to the chassis domain controller by wires to realize independent control of the vehicle body electric connecting rod coupling mechanism to couple the vehicle body fixing rod to couple the vehicle body to the sliding chassis, or to disconnect the vehicle body electric connecting rod coupling mechanism from the vehicle body fixing rod to disconnect the vehicle body from the sliding chassis. The chassis and body each have a domain controller, and other controllers of the chassis and body (such as the vehicle body audio and video entertainment control, the chassis automatic driving control, braking control, high-voltage control, steering control, drive control, suspension control, thermal management control, etc.) are connected to the corresponding domain controller according to their location. The cockpit domain controller and the chassis domain controller implement centralized, unified and standardized management of functional logic and signals, ensuring the functional integrity of each domain after the chassis and body are separated, while realizing adaptation of different chassis and bodies. Wireless communication can be carried out between the cockpit domain controller and the chassis domain controller to ensure coordinated control during the connection process of the chassis and body.

[0018] The air conditioning system air circuit, 12V power supply and CAN communication that are connected to the electric vehicle skateboard chassis and the body are all connected to each other using a gas-electric quick-plug interface. The gas-electric quick-plug interface is an energy docking combination board. Each pair of energy docking combination boards can simultaneously realize 2-way PT3 / 8 self-sealing air circuits, 7 / 8-5-pin 9A independent bus power supply and M12-4-pin D-coded bus interface functions.

[0019] Beneficial effects

[0020] The skateboard chassis of the present invention is equipped with an electric cylinder multi-link device and its controller. The multi-link can hook or loosen the fixed rod on the floor of the vehicle body to achieve connection and separation with the vehicle body. It has a simple structure, low production cost, high mechanical unlocking fault tolerance and low failure rate. An electric cylinder L-shaped support rod and its controller are installed under the side of the vehicle body. When the chassis is separated from the vehicle body, it can extend to support the ground to achieve self-lifting and support of the vehicle body, and realize automatic and rapid separation in conjunction with the movement of the chassis. The air duct of the air-conditioning system, 12V power supply, CAN communication, etc. that are connected to the chassis and the vehicle body also use quick connection interfaces for plugging in or separating. The structure is greatly simplified, and the failure of a single part will not affect the system function, and the robustness is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention in a connected state.

[0023] Figure 3It is a schematic diagram of the cross-sectional structure of the present invention in the disconnected state.

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the vehicle body of the present invention in a lifted state.

[0025] Figure 5 It is a schematic diagram of the exploded structure of the present invention, the vehicle body electric connecting rod coupling mechanism and the vehicle body electric lifting device.

[0026] Figure 6 It is a schematic diagram of an enlarged partial cross-section of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the electric vehicle body lifting device of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the coupling mechanism between the present invention and the vehicle body electric connecting rod.

[0029] Figure 9 This is a working principle diagram of the present invention in a connected state with the vehicle body electric connecting rod connection mechanism.

[0030] Figure 10 This is a working principle diagram of the present invention in the uncoupling state with the vehicle body electric connecting rod coupling mechanism.

[0031] Figure 11 It is a cross-sectional structural diagram of another embodiment of the present invention's linkage mechanism with the vehicle body's electric connecting rod.

[0032] In the picture:

[0033] 1. an electric vehicle skateboard chassis (1); 11. a chassis receiving groove (11);

[0034] 2. Mechanism for connecting with the vehicle body electric connecting rod (2); 21. First servo electric cylinder (21); 22. First hinge plate (22); 23. Second hinge plate (23); 24. Connecting rod (24); 241. Connecting portion (241); 25. Third hinge plate (25); 26. Crank arm connecting rod (26); 261. Bending portion (261); 27. Straight arm connecting rod (27);

[0035] 3. Vehicle body (3); 31. Vehicle body hooking accommodating groove (31); 32. Fixing rod (32); 33. Vehicle body electric lifting device (33); 331. L-shaped support arm plate (331); 332. Second servo electric cylinder (332); 34. Longitudinal groove (34); 35. Fixing plate (35); 351. Sliding rod sleeve (351); 36. Sliding rod (36); 37. Articulated portion (37). DETAILED DESCRIPTION

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only show portions relevant to the present invention, not all of them.

[0037] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0039] Example 1

[0040] See also Figure 1 and Figure 11 As shown, a quick connection structure between the body and chassis of an electric vehicle includes an electric vehicle skateboard chassis 1 and two pairs of electric connecting rod hooking mechanisms 2 with the body;

[0041] A chassis accommodating groove 11 is provided in the middle of the upper surface of the electric vehicle skateboard chassis 1 corresponding to each of the electric connecting rod hooking mechanisms 2 with the vehicle body;

[0042] The motor end of each of the electric connecting rod hooking mechanisms 2 is rotatably connected to the inner wall of the corresponding chassis accommodating groove 11, and the hooking end of each of the electric connecting rod hooking mechanisms 2 is rotatably connected to the inner wall of the chassis accommodating groove 11 on the corresponding side, and each of the electric connecting rod hooking mechanisms 2 can be hooked and fixed to the corresponding end surface of the vehicle body;

[0043] Each pair of the electric connecting rod hooking mechanisms 2 with the vehicle body is arranged in a transverse position on the upper surface of the electric vehicle skateboard chassis 1, and each pair of the electric connecting rod hooking mechanisms 2 with the vehicle body are in opposite directions, and the two pairs of the electric connecting rod hooking mechanisms 2 with the vehicle body are arranged front and back.

[0044] Each of the electric connecting rod coupling mechanisms 2 includes a first servo electric cylinder 21, a first hinge plate 22, a second hinge plate 23 and a coupling rod 24; the first servo electric cylinder 21 is a folding servo electric cylinder, the motor end of the first servo electric cylinder 21 is hinged to the first hinge plate 22, the first hinge plate 22 is fixed on the side wall of one end of the corresponding chassis accommodating groove 11, the second hinge plate 23 is fixed on the side wall of the chassis accommodating groove 11 away from the motor end of the first servo electric cylinder 21, the tail end of the coupling rod 24 is hinged to the second hinge plate 23, and the telescopic arm end of the first servo electric cylinder 21 is hinged to the middle part of the coupling rod 24 through a double pin hole, and the front end of the coupling rod 24 is provided with a coupling portion 241, which can be hooked and fixed to the corresponding end face of the vehicle body.

[0045] Example 2

[0046] See also Figures 1-10 As shown, a quick connection structure between the body and chassis of an electric vehicle includes an electric vehicle skateboard chassis 1 and a pair of electric connecting rod hooking mechanisms 2 with the body;

[0047] A chassis accommodating groove 11 is provided in the middle of the upper surface of the electric vehicle skateboard chassis 1 corresponding to each of the electric connecting rod hooking mechanisms 2 with the vehicle body;

[0048] The motor end of each of the electric connecting rod hooking mechanisms 2 is rotatably connected to the inner wall of the corresponding chassis accommodating groove 11, and the hooking end of each of the electric connecting rod hooking mechanisms 2 is rotatably connected to the inner wall of the chassis accommodating groove 11 on the corresponding side, and each of the electric connecting rod hooking mechanisms 2 can be hooked and fixed to the corresponding end surface of the vehicle body;

[0049] A pair of the vehicle body electric connecting rod hooking mechanisms 2 are staggeredly arranged in two staggered chassis accommodating grooves 11 corresponding to the middle of the upper surface of the electric vehicle skateboard chassis 1 (not shown in the figure), and the two staggered vehicle body electric connecting rod hooking mechanisms 2 are in opposite directions.

[0050] Each of the electric connecting rod hooking mechanisms 2 includes a first servo electric cylinder 21, a first hinge plate 22, a second hinge plate 23, a hooking rod 24, a third hinge plate 25, a crank arm connecting rod 26 and a straight arm connecting rod 27; the first servo electric cylinder 21 is a folding servo electric cylinder, the motor end of the first servo electric cylinder 21 is hinged to the first hinge plate 22, the first hinge plate 22 is fixed to the side wall of one end of the chassis accommodating groove 11, the telescopic arm of the first servo electric cylinder 21 is hinged to one end of the crank arm connecting rod 26 through a double pin hole, the third hinge plate 25 is fixed On the inner bottom wall of the corresponding chassis accommodating groove 11, the bent portion 261 of the curved arm link 26 is hinged to the third hinge plate 25, and the other end of the curved arm link 26 is hinged to the tail end of the hook link 24. The second hinge plate 23 is fixed to the side wall of the chassis accommodating groove 11 away from the motor end of the first servo electric cylinder 21. The tail end of the straight arm link 27 is hinged to the second hinge plate 23, and the front end of the straight arm link 27 is hinged to the middle part of the hook link 24. The front end of the hook link 24 is provided with a hooking portion 241, which can be hooked and fixed to the corresponding end face of the vehicle body.

[0051] The included angle between the two bent arms of the crank link 26 is an obtuse angle, and the range of the included angle is 95°-130°.

[0052] Example 3

[0053] See also Figures 1-10 As shown, a car includes a body 3 and a quick connection structure between the electric vehicle body and the chassis. The lower end surface of the body 3 can be matched, fitted and fixed with the upper surface of the electric vehicle skateboard chassis 1; the lower end surface of the body 3 is provided with a downward-opening body hooking accommodating groove 31 corresponding to the position of each hooking portion 241, and a fixing rod 32 is horizontally connected between a pair of side walls of the body hooking accommodating groove 31 corresponding to the movement trajectory of the hooking portion 241, and the hooking portion 241 at the front end of the corresponding hooking rod 24 can be hooked and fixed with the fixing rod 32.

[0054] A car also includes a pair of electric body lifting devices 33, which are both arranged on the lower end surface of the same side of the car body 3; the electric body lifting device 33 includes an L-shaped support arm plate 331 exposed on the lower end surface of the car body 3, and the L-shaped support arm plate 331 can be vertically displaced up and down, and the upper end surface of its long arm can be fitted and fixed to the lower end surface of the electric vehicle skateboard chassis 1. The car body 3 and the L-shaped support arm plate 331 can clamp and fix the middle part of the electric vehicle skateboard chassis 1.

[0055] A pair of longitudinal long grooves 34 with lower ends open are arranged in a front-to-back manner on the same side in the width direction of the lower end surface of the vehicle body 3. A fixing plate 35 is fixed to the open end of each longitudinal long groove 34, which can be opened and closed. The fixing plate 35 and the matching longitudinal long groove 34 constitute an electric cylinder accommodating cavity; the vehicle body electric lifting device 33 also includes a second servo electric cylinder 332, which is a return type servo electric cylinder. The motor end of the second servo electric cylinder 332 is accommodated in the electric cylinder accommodating cavity, and the motor end of the second servo electric cylinder 332 is fixed to the inner surface of the fixing plate 35. The telescopic end of the second servo electric cylinder 332 can be slidably connected to the fixing plate 35, and the front part of the telescopic end of the second servo electric cylinder 332 is exposed outside the outer surface of the fixing plate 35. The front part of the telescopic end of the second servo electric cylinder 332 is connected to the upper end surface of the short arm of the L-shaped support arm plate 331, and the L-shaped support arm plate 331 can be moved up and down synchronously with the second servo electric cylinder 332.

[0056] The vehicle body 3 also includes a cockpit domain controller, and the second servo electric cylinder 332 is connected to the cockpit domain controller by wires; the electric vehicle skateboard chassis 1 also includes a chassis domain controller, and the first servo electric cylinder 21 is connected to the chassis domain controller by wires; wireless communication can be carried out between the cockpit domain controller and the chassis domain controller.

[0057] The air conditioning system gas circuit, 12V power supply and CAN communication that are connected between the electric vehicle skateboard chassis 1 and the vehicle body 3 are all connected to each other using a gas-electric quick-plug interface, which is an energy docking combination board.

[0058] How it works

[0059] Body and electric car skateboard chassis unlocked

[0060] See also Figure 1-Figure 5 as well as Figure 9-10 As shown, when a different vehicle body needs to be replaced or the vehicle body and skateboard chassis need to be repaired, first, the cockpit domain controller of the vehicle body 3 issues a command to control the second servo electric cylinders 332 of the two vehicle body electric lifting devices 33 to synchronously step upward by a few millimeters, driving the two L-shaped support arm plates 331 and the electric vehicle skateboard chassis 1 to synchronously move upward by a few millimeters and then stop the operation, so that the hooking portion 241 at the front end of each hooking rod 24 of the vehicle body electric connecting rod hooking mechanism 2 is released from the tight hooking and contact relationship with the corresponding fixed rod 32 on the vehicle body 3, and the hooking rod 24 and the fixed rod 32 become in close proximity to each other in the vertical direction;

[0061] The chassis domain controller issues a command to control the retraction of the telescopic arms of the four first servo electric cylinders 21 of the vehicle body electric link mechanism 2, causing the rear end of the corresponding linked crank arm link 26 to rotate downward counterclockwise, and the front end of the crank arm link 26 to rotate upward counterclockwise, driving the tail end of the corresponding hook link 24 to move upward, and the front end of the straight arm link 27 to rotate downward counterclockwise, driving the hinged hook portion 241 to rotate clockwise while the height of the hook portion 241 is lowered relative to the initial hook state; at this time, the hooking and fixing between the vehicle body 3 and the electric vehicle skateboard chassis 1 is released;

[0062] Then, the cockpit domain controller issues a command to control the telescopic arms of the second servo electric cylinders 332 of the two body electric lifting devices 33 to move downward synchronously, driving the two L-shaped support arm plates 331 to move downward continuously. The two L-shaped support arm plates 331 first release the limit contact relationship with the electric vehicle skateboard chassis 1, and then the two L-shaped support arm plates 331 will contact and support the ground where the vehicle is parked, and continue to move the telescopic arms of the two second servo electric cylinders 332 downward until the body is lifted to a certain height (about 10 cm), and the operation of the two body electric lifting devices 33 is stopped; at this time, the body 3 is in a suspended state with the electric vehicle skateboard chassis 1. Since the air conditioning system air circuit, 12V power supply and CAN communication of the electric vehicle skateboard chassis 1 and the body 3 are connected to each other using gas-electric quick plug interfaces, in the process of separating the body 3 from the electric vehicle skateboard chassis 1, all the docked gas-electric quick plug interfaces are separated from each other under the influence of the lifting force, completing the automatic separation of the air circuit and circuit interface;

[0063] After the vehicle body 3 is separated from the electric vehicle skateboard chassis 1, the four tires of the electric vehicle skateboard chassis 1 are driven to turn to an angle perpendicular to the length direction of the electric vehicle skateboard chassis 1, and the four wheels are driven to rotate, so that the electric vehicle skateboard chassis 1 moves away from the two L-shaped support arm plates 331, completing the separation of the vehicle body and the electric vehicle skateboard chassis. The new vehicle body and the electric vehicle skateboard chassis are locked.

[0064] Like the previous body, the new body is equipped with a cockpit domain controller, two electric body lifting devices 33, and matching body hook-connecting slots 31 and fixing rods 32. In order to be assembled with the electric vehicle skateboard chassis of matching shape, the body must first be lifted according to the lifting steps of the electric body lifting devices 33.

[0065] Then, the unlocked and separated electric vehicle skateboard chassis 1 is moved horizontally to the bottom of the new vehicle body;

[0066] The cockpit domain controller of the new vehicle body sends a command to control the telescopic arms of the second servo electric cylinders 332 of the two vehicle body electric lifting devices 33 to move upward and retract synchronously, and the vehicle body gradually lowers its height until it contacts the electric vehicle skateboard chassis 1, and the telescopic arms of the second servo electric cylinders 332 continue to retract, driving the two L-shaped support arm plates 331 to move upward continuously. The two L-shaped support arm plates 331 first release the contact support with the ground where the vehicle is parked, and continue to move the telescopic arms of the two second servo electric cylinders 332 upward. The two L-shaped support arm plates 331 contact the lower end surface of the electric vehicle skateboard chassis 1, stopping the two vehicle bodies. At this time, all the gas-electric quick-connect interfaces of the air-conditioning system, 12V power supply, and CAN communication that are connected to the electric vehicle skateboard chassis 1 and the new vehicle body are automatically connected to each other, completing the automatic plug-in of the gas circuit and circuit interface; the cockpit domain controller of the new vehicle body issues a command to control the second servo electric cylinders 332 of the two vehicle body electric lifting devices 33 to synchronously step upward by a few millimeters, driving the two L-shaped support arm plates 331 and the electric vehicle skateboard chassis 1 to synchronously move upward and then stop the operation, so as to facilitate the subsequent hooking operation of the hooking portion 241 with the corresponding fixing rod 32 on the vehicle body 3;

[0067] The chassis domain controller of the electric vehicle skateboard chassis 1 sends a command to control the extension of the telescopic arms of the four first servo electric cylinders 21 of the vehicle body electric link mechanism 2, so that the rear end of the corresponding linked crank arm link 26 rotates upward in a clockwise direction. At the same time, the front end of the telescopic arm of the first servo electric cylinder 21 is lifted up with the first hinge plate 22 as the axis, and the front end of the crank arm link 26 rotates downward in a clockwise direction, driving the tail end of the corresponding hook link 24 to move downward, and the front end of the straight arm link 27 rotates upward in a clockwise direction, driving the hinged hook portion 241 to rotate counterclockwise. At the same time, the hook portion 241 rises relative to the height of the initial adjacent state with the fixed rod 32 until the hook portion 241 contacts the side wall of the fixed rod 32 and stops operating. At this time, the hook link 24 and the fixed rod 32 become adjacent to each other in the vertical direction.

[0068] The cockpit domain controller of the vehicle body sends out instructions again to control the second servo electric cylinders 332 of the two vehicle body electric lifting devices 33 to step down synchronously by a few millimeters, driving the two L-shaped support arm plates 331 and the electric vehicle skateboard chassis 1 to move down synchronously by a few millimeters and then stop operating, so that each hooking rod 24 of the vehicle body electric connecting rod hooking mechanism 2 is in a tight hooking and contacting relationship with the corresponding fixed rod 32 on the vehicle body 3. At this time, the two L-shaped support arm plates 331 and the lower end surface of the electric vehicle skateboard chassis 1 are still in a limit contact relationship, and the hooking and fixing between the new vehicle body and the electric vehicle skateboard chassis 1 is locked; the assembly of the new vehicle body and the electric vehicle skateboard chassis 1 is completed.

[0069] Example 4

[0070] See also Figures 1-10As shown, a car, which is different from Example 3 in that a sliding rod sleeve 351 is provided on the fixed plate 35, and a sliding rod 36 is vertically provided on the upper end surface of the short arm of the L-shaped support arm plate 331 corresponding to the position of the sliding rod sleeve 351, and the sliding rod 36 is slidably sleeved in the sliding rod sleeve 351; a hinge part 37 is protruding from the upper end surface of the short arm of the L-shaped support arm plate 331 corresponding to the telescopic end position of the second servo electric cylinder 332, and the double pin holes at the front part of the telescopic end of the second servo electric cylinder 332 are hinged to the hinge part 37 through a hinge shaft, and the horizontal opening direction of the hinge hole of the hinge part 37 is perpendicular to the length direction of the long arm surface of the L-shaped support arm plate 331.

[0071] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A quick connection structure between the body and chassis of an electric vehicle, characterized by: It comprises an electric vehicle skateboard chassis (1) and at least one pair of electric connecting rod coupling mechanisms (2) with the vehicle body; A chassis accommodating groove (11) is provided in the middle of the upper surface of the electric vehicle skateboard chassis (1) corresponding to each of the vehicle body electric connecting rod hooking mechanisms (2); The motor end of each vehicle body electric connecting rod hooking mechanism (2) is rotatably connected to the inner wall of the corresponding chassis accommodating groove (11), and the hooking end of each vehicle body electric connecting rod hooking mechanism (2) is rotatably connected to the inner wall of the chassis accommodating groove (11) on the corresponding side, and each vehicle body electric connecting rod hooking mechanism (2) can be hooked and fixed to the corresponding end surface of the vehicle body; Each pair of the vehicle body electric connecting rod hooking mechanisms (2) are arranged in alignment or staggered arrangement on the upper surface of the electric vehicle skateboard chassis (1).

2. The electric vehicle body and chassis quick connection structure according to claim 1, characterized in that: Each of the electric connecting rod coupling mechanisms (2) comprises a first servo electric cylinder (21), a first hinge plate (22), a second hinge plate (23) and a coupling rod (24); the motor end of the first servo electric cylinder (21) is hinged to the first hinge plate (22), the first hinge plate (22) is fixed to the side wall of one end of the chassis accommodating groove (11) in the corresponding position, the second hinge plate (23) is fixed to the side wall of the chassis accommodating groove (11) away from the motor end of the first servo electric cylinder (21), the tail end of the coupling rod (24) is hinged to the second hinge plate (23), and the telescopic arm end of the first servo electric cylinder (21) is hinged to the middle part of the coupling rod (24) through a double pin hole, and the front end of the coupling rod (24) is provided with a coupling portion (241), which can be coupled and fixed to the corresponding end face of the vehicle body.

3. The electric vehicle body and chassis quick connection structure according to claim 1, characterized in that: Each of the vehicle body electric connecting rod hooking mechanisms (2) comprises a first servo electric cylinder (21), a first hinge plate (22), a second hinge plate (23), a hooking rod (24), a third hinge plate (25), a crank arm connecting rod (26) and a straight arm connecting rod (27); the motor end of the first servo electric cylinder (21) is hinged to the first hinge plate (22), the first hinge plate (22) is fixed to the side wall of one end of the chassis accommodating groove (11) in the corresponding position, the telescopic arm of the first servo electric cylinder (21) is hinged to one end of the crank arm connecting rod (26) through a double pin hole, and the third hinge plate (25) is fixed to the chassis accommodating groove in the corresponding position. (11) On the inner bottom wall, the bent portion (261) of the crank arm connecting rod (26) is hinged to the third hinge plate (25), the other end of the crank arm connecting rod (26) is hinged to the tail end of the hook connecting rod (24), the second hinge plate (23) is fixed to the side wall of the chassis accommodating groove (11) away from the motor end of the first servo electric cylinder (21), the tail end of the straight arm connecting rod (27) is hinged to the second hinge plate (23), the front end of the straight arm connecting rod (27) is hinged to the middle part of the hook connecting rod (24), and the front end of the hook connecting rod (24) is provided with a hooking portion (241), which can be hooked and fixed to the corresponding end face of the vehicle body.

4. The electric vehicle body and chassis quick connection structure according to claim 3, characterized in that: The included angle between the two bent arms of the crank link (26) is an obtuse angle, and the included angle ranges from 95° to 130°.

5. An automobile, comprising a vehicle body, characterized in that: It also includes a quick connection structure between the body and chassis of an electric vehicle as described in any one of claims 1 to 4, wherein the lower end surface of the body (3) can be matched, fitted and fixed with the upper surface of the chassis (1) of the electric vehicle skateboard; the lower end surface of the body (3) is provided with a downwardly opening body hooking accommodating groove (31) corresponding to the position of each hooking portion (241), and a fixing rod (32) is horizontally connected between a pair of side walls of the body hooking accommodating groove (31) corresponding to the movement trajectory of the hooking portion (241), and the hooking portion (241) at the front end of the corresponding hooking rod (24) can be hooked and fixed with the fixing rod (32).

6. The automobile according to claim 5, characterized in that: The electric vehicle body lifting device (33) is also included. The electric vehicle body lifting devices (33) are both arranged on the lower end surface of the same side of the vehicle body (3). The electric vehicle body lifting device (33) includes an L-shaped support arm plate (331) exposed on the lower end surface of the vehicle body (3). The L-shaped support arm plate (331) can be vertically displaced up and down. The upper end surface of the long arm can be fixed to the lower end surface of the electric vehicle skateboard chassis (1) by fitting and limiting. The vehicle body (3) and the L-shaped support arm plate (331) can clamp and fix the middle part of the electric vehicle skateboard chassis (1).

7. The automobile according to claim 6, characterized in that: A pair of longitudinal long grooves (34) with lower ends opened are arranged front and back on the same side of the width direction of the lower end surface of the vehicle body (3), and a fixing plate (35) is fixed to the open end of each longitudinal long groove (34) in an openable and closable manner. The fixing plate (35) and the matching longitudinal long groove (34) constitute an electric cylinder accommodating cavity; the vehicle body electric lifting device (33) also includes a second servo electric cylinder (332), the motor end of the second servo electric cylinder (332) is accommodated in the electric cylinder accommodating cavity, and the second servo electric cylinder (332) is arranged in the electric cylinder accommodating cavity. The motor end of the cylinder (332) is fixed to the inner surface of the fixed plate (35), the telescopic end of the second servo electric cylinder (332) can be slidably sleeved on the fixed plate (35), and the front of the telescopic end of the second servo electric cylinder (332) is exposed outside the outer surface of the fixed plate (35), the front of the telescopic end of the second servo electric cylinder (332) and the upper end surface of the short arm of the L-shaped support arm plate (331) are connected to each other, and the L-shaped support arm plate (331) can be displaced up and down synchronously with the second servo electric cylinder (332).

8. The automobile according to claim 7, characterized in that: A slide rod sleeve (351) is provided on the fixed plate (35), and a slide rod (36) is vertically provided on the upper end surface of the short arm of the L-shaped support arm plate (331) corresponding to the position of the slide rod sleeve (351), and the slide rod (36) is slidably sleeved in the slide rod sleeve (351); a hinge part (37) is protruding from the upper end surface of the short arm of the L-shaped support arm plate (331) corresponding to the telescopic end position of the second servo electric cylinder (332), and the double pin holes at the front of the telescopic end of the second servo electric cylinder (332) are hinged to the hinge part (37) through a hinge shaft, and the horizontal opening direction of the hinge hole of the hinge part (37) is perpendicular to the length direction of the long arm surface of the L-shaped support arm plate (331).

9. The automobile according to claim 8, characterized in that: The vehicle body (3) further includes a cockpit domain controller, and the second servo electric cylinder (332) is connected to the cockpit domain controller via a wire; the electric vehicle skateboard chassis (1) further includes a chassis domain controller, and the first servo electric cylinder (21) is connected to the chassis domain controller via a wire; wireless communication can be performed between the cockpit domain controller and the chassis domain controller.

10. The automobile according to claim 9, characterized in that: The air conditioning system gas circuit, 12V power supply and CAN communication that are connected to the electric vehicle skateboard chassis (1) and the vehicle body (3) are all connected to each other using a gas-electric quick-plug interface, and the gas-electric quick-plug interface is an energy docking combination plate.

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