New energy pick-up truck frame

Abstract

The application relates to the technical field of automobile body structure, and provides a new energy pickup truck frame, which comprises a front part and a tail part, a chassis is arranged between the front part and the tail part, frame longitudinal beams are arranged on the two sides of the chassis, a working cavity is arranged in the middle of the chassis, an expansion assembly is arranged on the top of the working cavity, and a battery assembly is arranged in the working cavity; when the side is impacted, the arc-shaped plate compresses the spring to buffer and absorb energy, a pressure sensor triggers a reverse contraction of an electric cylinder to form an electronic active retraction path; meanwhile, the arc-shaped plate moves to push the battery pack upwards in a retraction mode through the push rod two, the sealed medium and the push rod one, a mechanical hydraulic redundancy path is formed, the double paths are backup for each other, even if the electronic system is damaged, the mechanical path can still guarantee the retraction of the battery pack, and safety accidents caused by extrusion can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive body structure technology, specifically to a new energy pickup truck chassis. Background Technology

[0002] Pickup trucks, as a type of motor vehicle that combines passenger comfort with cargo practicality, typically employ a non-load-bearing body structure. The core of this structure lies in an independent, high-strength steel ladder frame, composed of two longitudinal beams and several transverse beams. The engine, transmission, suspension system, and body shell are all mounted on this frame. The frame itself bears most of the load and impact from the road surface. This structure features strong load-bearing capacity and relatively high torsional stiffness, enabling it to meet the heavy-duty and off-road needs of pickup trucks under various road conditions.

[0003] However, with the global energy structure transformation and increasingly stringent environmental regulations, new energy pickup trucks, especially pure electric pickup trucks, have become an important development direction for the automotive industry. Unlike traditional internal combustion engine pickup trucks, new energy pickup trucks have undergone fundamental changes in power systems, energy storage, and overall vehicle layout, which has placed new and more stringent requirements on their chassis structure.

[0004] In existing technologies, the traditional pickup truck frame structure has the following main technical defects when applied to new energy pickup trucks: First, there is a conflict between battery pack placement and cargo space utilization: the central area of ​​a traditional ladder frame typically houses components such as the driveshaft, exhaust pipe, and muffler, resulting in a complex structure and fragmented space. New energy pickup trucks require a large and heavy battery pack. If a traditional frame is used directly for a new energy vehicle, the battery pack can only be mounted on the sides of the frame or under the cargo box, leading to reduced ground clearance, poor vehicle passability, and increased risk of bottom impacts; or the battery pack can be placed under the cab or cargo box, encroaching on the interior space of the cargo box, especially the area under the rear seats, where space utilization is low. Existing frame structures lack a design that can dynamically adjust the battery pack placement and cargo space, making it impossible to expand cargo space as needed while ensuring battery pack safety.

[0005] Second, the battery pack's side impact protection capability is insufficient: The huge battery pack installed on the chassis is extremely vulnerable to compression and puncture when the vehicle is involved in a side impact, which can lead to serious safety accidents such as thermal runaway. In the existing technology, the side protection of the pickup truck frame mainly relies on the passive energy absorption structure of the frame's longitudinal beams and cross beams, which has limited protection capability and cannot actively adjust the position of the battery pack according to the magnitude of the impact force to avoid risks. There is a lack of an active protection mechanism that can sense the side impact force and actively retract the battery pack to a safe area.

[0006] Third, the existing chassis structure has poor spatial adaptability: As a multi-purpose vehicle, pickup trucks have complex and varied usage scenarios. They need to obtain more cargo space on flat roads to meet daily use needs, while ensuring the ground clearance and safety of the battery pack under bumpy or off-road conditions. The battery pack installation position of the existing chassis structure is often fixed, and it is impossible to dynamically adjust the height of the battery pack according to road conditions and usage needs, making it difficult to balance the needs of space expansion and chassis passability.

[0007] Fourth, existing side-impact protection structures are simple and lack redundancy: some existing technologies set up protective plates or buffer structures on the side of the vehicle frame, but they mostly use a single protection method. When the collision sensor or electronic control system is damaged in a collision, the active protection function may fail, and the battery pack cannot be reliably retracted, which poses a safety risk.

[0008] Therefore, there is an urgent need to develop a new type of new energy pickup truck chassis to solve the above-mentioned technical problems. Summary of the Invention

[0009] This invention provides a new energy pickup truck frame, in which an electric cylinder drives the battery pack to move downwards, triggering a movable plate to open a through slot, creating additional storage space under the rear seats and enabling on-demand utilization of the vertical space of the vehicle compartment. Simultaneously, when the battery pack moves downwards, the fixing plate changes from horizontal to vertical, forming a limit on the side of the elastic plate to prevent items from exceeding the boundary and causing subsequent jamming, ensuring reliable system reset, thus solving the problems mentioned in the background art.

[0010] The technical solution of this invention is as follows: A new energy pickup truck chassis includes: a front part and a rear part, a chassis is provided between the front part and the rear part, frame longitudinal beams are provided on both sides of the chassis, a working cavity is provided in the middle of the chassis, an expansion component is provided on the top of the working cavity, and a battery assembly is provided inside the working cavity. The expansion assembly includes a through slot 1 formed on the chassis at the top of the working cavity. The chassis has square slots on each side of the through slot 1. An elastic plate is slidably connected in the square slot. A movable plate is fixedly connected to the end of each elastic plate away from the square slot. A push plate is rotatably connected to the movable plate. An arc-shaped guide surface is provided on the top of the push plate. There are two push plates in total. The two push plates are distributed on two adjacent sides of the movable plate. When the movable plate moves down, the push plate is parallel to the elastic plate.

[0011] When a user determines that additional storage space is needed in the passenger compartment, and the current road surface is flat and free of severe bumps, the control system is activated. After the command is given, the electric cylinder begins to work, pushing its output end downwards to move the battery pack, which is fixedly connected to it, toward the ground. Since the top of the battery pack is fixedly connected to the bottom of the movable plate, it will forcibly pull the elastic plate. The elastic plate is gradually pulled out of the square groove in the chassis. The elastic plate drives the movable plate to move downwards together. The movable plate descends from the originally blocked through groove, thus forming a sunken storage space in the passenger compartment floor. This sunken space is lower than the passenger compartment floor but located inside the passenger compartment. Vehicle occupants can directly use this newly created sunken space to store items, realizing the dynamic expansion of the vertical storage space in the passenger compartment.

[0012] Furthermore, symmetrical guide grooves are provided on both sides of the inner wall of the working cavity. Two sliding shafts are slidably connected in the guide grooves on both sides, and a fixed plate is fixedly connected between the two opposing sliding shafts. The fixed plate is the same length and width as the elastic plate.

[0013] When the battery pack moves downward, it drives the fixing plate to move synchronously. The fixing plate slides along the arc surface of the guide groove through parallel sliding shafts, changing the fixing plate from horizontal to vertical. When the fixing plate is vertical, it is located on the side of the elastic plate, which is used to restrict the elastic plate and prevent objects from exceeding the boundary of the elastic plate when placed in the storage space, thus preventing the battery pack from being stuck when it moves upward.

[0014] Furthermore, the guide groove is composed of a horizontal groove, an arc-shaped groove, and a vertical groove, and the top of the fixing plate is provided with an arc surface, which facilitates the fixing plate to slide to the side when it slides to the top.

[0015] Furthermore, the battery assembly includes an electric cylinder fixedly connected to the inner wall of the top of the working chamber. A battery pack is fixedly connected to the output end of the electric cylinder. The top of the battery pack is fixedly connected to the bottom of the movable plate. One end of the battery pack is rotatably connected to the fixed plate. A pushing component is provided on one side of the electric cylinder in the working chamber. A through groove II is provided at the bottom of the working chamber on the chassis. Inclined surfaces facing the battery pack are provided on both sides of the through groove II. A guide groove II is provided on both sides of the through groove II in the working chamber. An arc-shaped plate is slidably connected in the guide groove II.

[0016] Furthermore, the pushing assembly includes a connecting block fixedly connected to the top of the working chamber. The connecting block has a connecting channel, and its two ends are respectively connected to a first cylinder and a second cylinder. The connecting block is fixedly connected to the first cylinder and the second cylinder respectively. A push rod is slidably connected inside the first cylinder, and the end of the push rod away from the first cylinder is fixedly connected to the battery pack. A push rod is slidably connected inside the second cylinder, and the end of the push rod away from the second cylinder is rotatably connected to the arc-shaped plate. A sealing ring is provided at the bottom of both the first cylinder and the second cylinder. A limit ring is fixedly connected to the end of the push rod inside the first cylinder, and a limit ring is fixedly connected to the end of the push rod inside the second cylinder.

[0017] When the electric cylinder pushes the battery pack downward to increase the storage space inside the vehicle, the battery pack drives the push rod one to move synchronously. The push rod one moves inside the cylinder one, causing the limiting ring one at its end to squeeze the medium inside the cylinder one and the connecting channel. Since the cylinder one is connected to the cylinder two through the connecting channel, and both cylinder one and cylinder two have sealing rings at the bottom, a closed fluid circuit is formed. The pressure of the medium in the push rod one will be instantly transmitted to the cylinder two through the connecting channel. The medium in the cylinder two pulls the push rod two to move away from the guide groove two, and at the same time pulls the arc plate to move upward in the guide groove two, opening the position of the through groove two.

[0018] Furthermore, a buffer cavity is formed on the side of the arc-shaped plate away from the battery pack. A pressure sensor is installed in the buffer cavity and is electrically connected to the electric cylinder. Multiple springs are installed in the buffer cavity. A push block is fixedly connected to the end of the arc-shaped plate away from the push rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses an electric cylinder to drive the battery pack to move downwards, which in turn opens the through slot 1 of the movable plate, forming an additional storage space under the rear seats, realizing the on-demand use of the vertical space of the vehicle compartment; at the same time, the fixing plate changes from horizontal to vertical when the battery pack moves downwards, forming a limit on the side of the elastic plate to prevent items from exceeding the boundary and causing subsequent jamming, ensuring reliable system reset.

[0020] 2. In this invention, upon side impact, the arc-shaped plate compresses the spring to absorb energy, and the pressure sensor triggers the electric cylinder to contract in the opposite direction, forming an electronic active retraction path. Furthermore, when the movable plate resets, it automatically pushes items straddling the through-slot one to the side, preventing items from blocking the through-slot one and causing the movable plate to fail to fully reset, further improving the system's ease of use and reliability. Simultaneously, the movement of the arc-shaped plate, assisted by push rod two, the sealed medium, and push rod one, pushes the battery pack upwards, forming a mechanical-hydraulic redundant path. These dual paths serve as backups for each other; even if the electronic system is damaged, the mechanical path can still ensure the battery pack retracts, effectively preventing safety accidents caused by compression.

[0021] 3. This invention features multi-condition adaptive capability: the battery pack can be raised and lowered according to road conditions. On flat roads, it lowers to expand storage space, and on bumpy or off-road conditions, it rises to ensure ground clearance, taking into account both space practicality and chassis passability, thus meeting the complex and ever-changing usage scenarios of pickup trucks. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the device of the present invention; Figure 2 This is a diagram of the internal structure of the device of the present invention; Figure 3 This is a cross-sectional view of the device of the present invention; Figure 4 This is a structural diagram of the battery assembly of the device of the present invention; Figure 5 This is a structural diagram of the guide groove of the device of the present invention; Figure 6 This is the present invention. Figure 2 Enlarged view of point A in the middle; Figure 7 This is the present invention. Figure 5 Enlarged view of section B in the middle.

[0023] In the picture: 1. Front section; 2. Rear section; 3. Chassis; 4. Frame longitudinal beams; 5. Working chamber; 51. Guide groove one; 52. Sliding shaft; 53. Fixing plate; 531. Arc surface; 6. Expansion assembly; 61. Through groove one; 62. Square groove; 63. Elastic plate; 64. Movable plate; 65. Push plate; 7. Battery assembly; 71. Electric cylinder; 72. Battery pack; 73. Push assembly; 731. Connecting block; 732. Connecting channel; 733. Cylinder one; 734. Cylinder two; 735. Push rod one; 736. Push rod two; 737. Limiting ring one; 738. Limiting ring two; 74. Through groove two; 75. Inclined surface; 76. Guide groove two; 77. Arc plate; 771. Buffer chamber; 772. Spring; 773. Push block. Detailed Implementation

[0024] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0025] like Figures 1-7 As shown, the present invention provides a new energy pickup truck frame, including: a front part 1 and a rear part 2, a chassis 3 is provided between the front part 1 and the rear part 2, frame longitudinal beams 4 are provided on both sides of the chassis 3, a working cavity 5 is provided in the middle of the chassis 3, an expansion component 6 is provided on the top of the working cavity 5, and a battery component 7 is provided inside the working cavity 5. The expansion assembly 6 includes a through groove 61 formed on the top of the working cavity 5 on the chassis 3. The chassis 3 has square grooves 62 on each side of the through groove 61. An elastic plate 63 is slidably connected within each square groove 62. A movable plate 64 is fixedly connected to the end of each elastic plate 63 away from the square groove 62. A push plate 65 is rotatably connected to the movable plate 64. The top of the push plate 65 has an arc-shaped guide surface. When the movable plate 64 moves upward, the push plate 65 moves upward synchronously with it. The arc-shaped guide surface at the top of the push plate 65 contacts the side wall of an item spanning the through groove 61 and pushes the item to the side during the upward movement to prevent the item from blocking the through groove 61 and hindering the complete reset of the movable plate 64. Two push plates 65 are provided, distributed on adjacent sides of the movable plate 64. When the movable plate 64 moves downward, the push plate is parallel to the elastic plate 63.

[0026] When the user determines that additional storage space is needed in the passenger compartment, and the current road surface is flat and without severe bumps, the control system is activated. After the command is issued, the electric cylinder 71 starts to work, and its output end pushes downward, pushing the battery pack 72, which is fixedly connected to it, to move towards the ground. Since the top of the battery pack 72 is fixedly connected to the bottom of the movable plate 64, it will forcibly pull the elastic plate 63. The elastic plate 63 is gradually pulled out from the square groove 62 of the chassis 3. The elastic plate 63 drives the movable plate 64 to move downward together. The movable plate 64 descends from the originally blocked through groove 61, thereby forming a sunken storage space in the passenger compartment floor. This sunken space is lower than the passenger compartment floor plane but located inside the passenger compartment. Vehicle occupants can directly use this newly formed sunken space to store items, realizing the dynamic expansion of the vertical storage space in the passenger compartment.

[0027] As a technical solution of the present invention, guide grooves 51 are symmetrically provided on both sides of the inner wall of the working cavity 5. Two sliding shafts 52 are slidably connected in the guide grooves 51 on both sides respectively. A fixing plate 53 is fixedly connected between the two opposing sliding shafts 52. The fixing plate 53 is the same length and width as the elastic plate 63.

[0028] When the battery pack 72 moves downward, it drives the fixing plate 53 to move synchronously. The fixing plate 53 slides along the arc surface 531 of the guide groove 51 via parallel sliding shafts 52, so that the fixing plate 53 changes from horizontal to vertical. When the fixing plate 53 is vertical, it is located on the side of the elastic plate 63, which is used to restrict the elastic plate 63 and prevent objects from exceeding the boundary of the elastic plate 63 when placed in the storage space, and prevent the battery pack 72 from being stuck when it moves upward.

[0029] As a technical solution of the present invention, the guide groove 51 is composed of a horizontal groove, an arc groove and a vertical groove, and the top of the fixing plate 53 is provided with an arc surface 531, which facilitates the fixing plate 53 to slide to the side when it slides to the top.

[0030] As one technical solution of the present invention, the battery assembly 7 includes an electric cylinder 71 fixedly connected to the inner wall of the top of the working chamber 5. The output end of the electric cylinder 71 is fixedly connected to a battery pack 72. The top of the battery pack 72 is fixedly connected to the bottom of the movable plate 64. The battery pack 72 is rotatably connected to one end of the fixed plate 53. A pushing assembly 73 is provided on one side of the electric cylinder 71 in the working chamber 5. The chassis 3 has a through groove 74 at the bottom of the working chamber 5. Inclined surfaces 75 facing the battery pack 72 are provided on both sides of the through groove 74. A guide groove 76 is provided on both sides of the through groove 74 in the working chamber 5. An arc-shaped plate 77 is slidably connected in the guide groove 76.

[0031] As one technical solution of the present invention, the pushing component 73 includes a connecting block 731 fixedly connected to the top of the working cavity 5. A connecting channel 732 is provided inside the connecting block 731. Two ends of the connecting block 731 are respectively connected to a first cylinder 733 and a second cylinder 734. The connecting block 731 is fixedly connected to both the first cylinder 733 and the second cylinder 734. A push rod 735 is slidably connected inside the first cylinder 733. The push rod 735 is located away from the first cylinder 733. One end is fixedly connected to the battery pack 72. A push rod 736 is slidably connected inside the second cylinder 734. The end of the push rod 736 away from the second cylinder 734 is rotatably connected to the arc plate 77. Sealing rings are provided at the bottom of both the first cylinder 733 and the second cylinder 734. A limit ring 737 is fixedly connected to the end of the push rod 735 inside the first cylinder 733. A limit ring 738 is fixedly connected to the end of the push rod 736 inside the second cylinder 734.

[0032] When the electric cylinder 71 pushes the battery pack 72 downward to increase the storage space inside the vehicle, the battery pack 72 drives the push rod 735 to move synchronously. The push rod 735 moves inside the cylinder 733, causing the limiting ring 737 at its end to squeeze the medium inside the cylinder 733 and the connecting channel 732. Since the cylinder 733 is connected to the cylinder 734 through the connecting channel 732, and both the cylinder 733 and the cylinder 734 are sealed with sealing rings at the bottom, a closed fluid circuit is formed. The pressure of the push rod 735 on the medium is instantly transmitted to the cylinder 734 through the connecting channel 732. The medium inside the cylinder 734 pulls the push rod 736 to move away from the guide groove 76, and at the same time pulls the arc plate 77 to move upward in the guide groove 76, opening the position of the through groove 74.

[0033] As a technical solution of the present invention, a buffer cavity 771 is provided in the side of the arc plate 77 away from the battery pack 72. A pressure sensor is provided in the buffer cavity 771 and is electrically connected to the electric cylinder 71. A plurality of springs 772 are provided in the buffer cavity 771. A push block 773 is fixedly connected to the end of the arc plate 77 away from the push rod 736.

[0034] When the truck is hit from the side, the impact force first acts on the side of the frame and is transmitted to the curved plate 77. The curved plate 77 is compressed. The impact force first contacts and compresses the spring 772 in the buffer cavity 771, absorbing part of the initial impact energy. Then, the curved plate 77 is guided by the guide groove 76 to move one end towards the bottom of the battery pack 72. At the same time, the push block 773 pushes the battery pack 72 back into the working cavity 5. In the initial stage of the collision, the pressure sensor in the buffer chamber 771 detects that the pressure exceeds the preset threshold and immediately sends an electrical signal to the control unit of the electric cylinder 71. After receiving the signal, if the electric cylinder 71 is currently in the extended state, it will immediately start to reverse and retract; if it is in the retracted state, it will maintain and increase the locking force. This action is designed to quickly lift the battery pack 72 from the potentially crushed bottom danger area back into the working chamber 5. At the same time, the mechanical force transmitted by the pushing component 73 also assists in pushing the push rod 735 from another direction, helping the battery pack 72 to retract upwards faster and more stably, forming a double protection with the action of the electric cylinder 71.

[0035] Working principle: like Figures 2-7As shown, firstly, when the user determines that the storage space in the compartment needs to be increased, and the current road surface is flat and without severe bumps, the user issues a space expansion command through the in-vehicle control system. After the control system confirms that the road surface flatness meets the preset conditions, it sends a start signal to the electric cylinder 71. The electric cylinder 71 is fixed on the inner wall of the top of the working chamber 5, and its output end begins to push downward. Since the output end of the electric cylinder 71 is fixedly connected to the battery pack 72, the battery pack 72 is pushed to move towards the ground. When the battery pack 72 moves downward, it pulls the movable plate 64. The movable plate 64 drives the elastic plate 63 to move downward together. The movable plate 64 was originally blocked in the through groove 61 at the top of the working chamber 5. As the movable plate 64 descends, the through groove 61 is opened, creating an additional sunken space below the original position of the through groove 61. The vehicle occupants can directly use this newly appeared recessed space to store items, realizing the dynamic expansion of the vertical storage space in the compartment. As the battery pack 72 moves downward, the fixed plate 53, which is rotatably connected to the battery pack 72, moves downward synchronously. Both ends of the fixed plate 53 are slidably connected to guide grooves 51 opened on the inner walls of both sides of the working cavity 5 via sliding shafts 52. The guide grooves 51 consist of three sections: a horizontal groove, an arc-shaped groove, and a vertical groove. Initially, the fixed plate 53 is in a horizontal position, and the sliding shaft 52 is located in the horizontal groove. As the battery pack 72 moves downward, the sliding shaft 52 passes sequentially through the horizontal groove → arc-shaped groove → vertical groove. In the arc-shaped groove section, the fixed plate 53 gradually changes from horizontal to vertical under guidance. After the sliding shaft 52 enters the vertical groove, the fixing plate 53 becomes completely vertical and is located on the side of the elastic plate 63. The vertical fixing plate 53 is used to limit the lateral boundary of the elastic plate 63 to prevent items from exceeding the edge range of the elastic plate 63 when the user places items in the storage space. This can prevent the battery pack 72 from being stuck due to the items exceeding the boundary when it moves upward, ensuring reliable system reset. At the same time, the top of the fixing plate 53 is provided with an arc surface 531, which makes it easy for the fixing plate 53 to slide to the side when it slides to the top, achieving smooth turning. When the electric cylinder 71 pushes the battery pack 72 downward, the battery pack 72 drives the push rod 735, which is fixedly connected to it, to move synchronously. The push rod 735 moves downward inside the cylinder 733, and the limiting ring 737 compresses the medium inside the cylinder 733. The cylinder 733 is connected to the cylinder 734 through the connecting channel 732 in the connecting block 731. Both the bottom of the cylinder 733 and the cylinder 734 are provided with sealing rings to form a closed fluid circuit. The push rod 735 compresses the medium. The force is instantly transmitted to the cylinder 734 through the connecting channel 732. The medium inside the cylinder 734 pushes the push rod 736 to move away from the guide groove 76. The end of the push rod 736 away from the cylinder 734 is rotatably connected to the arc plate 77. Therefore, the arc plate 77 is pulled and moves upward within the guide groove 76. The position of the through groove 74 is opened, and the arc plate 77 retracts upward from the bottom slope 75, making room for the battery pack 72 to move further downward or retract during a collision.

[0036] like Figures 2-4 and Figures 6-7 As shown, if the truck is struck from the side during operation, the impact force first acts on the side of the frame, and is transmitted along the longitudinal beams 4 and crossbeams to the arc-shaped plates 77 on both sides of the working chamber 5. The arc-shaped plates 77 are compressed and begin to move into the working chamber 5 along the guide grooves 76. A buffer chamber 771 is provided on the side of the arc-shaped plate 77 away from the battery pack 72. Multiple springs 772 are installed in the buffer chamber 771. The impact force first compresses the springs 772 in the buffer chamber 771. The deformation of the springs 772 absorbs part of the initial impact energy, reducing the impact of the instantaneous peak force on the battery pack 72 and the sensors. When the springs 772 are compressed, The pressure inside the buffer chamber 771 rises sharply. The pressure sensor detects that the pressure exceeds the preset threshold and immediately sends an electrical signal to the control unit of the electric cylinder 71. If the electric cylinder 71 is currently in the extended state, the controller issues a reverse retraction command, and the electric cylinder 71 immediately starts to retract in the reverse direction. If the electric cylinder 71 is currently in the retracted state, the controller maintains or increases the locking force of the electric cylinder 71 to prevent the battery pack 72 from accidentally moving downward due to inertia or impact force. The controller quickly lifts the battery pack 72 from the potentially squeezed bottom danger area back into the working chamber 5 to avoid further squeezing, puncture, or thermal runaway of the battery pack 72 in the low position. The arc plate 77 is guided by the arc surface 531 on one side and the guide groove 76. One end of the arc plate 77 moves toward the bottom of the battery pack 72. The end of the arc plate 77 away from the push rod 736 is fixedly connected to the push block 773. The push block 773 directly contacts the battery pack 72 during the movement of the arc plate 77 and pushes the battery pack 72 back into the working cavity 5.

[0037] At the same time, the movement of the arc plate 77 drives the push rod 736, which is rotatably connected to it, to move into the cylinder 734. The push rod 736 squeezes the medium inside the cylinder 734 through the limiting ring 738. The medium pressure is transmitted to the cylinder 733 through the connecting channel 732, pushing the push rod 735 to move upward. The push rod 735 is fixedly connected to the battery pack 72, so it assists in pushing the battery pack 72 upward to retract from another direction. Through the dual action of the electronic path (pressure sensor → controller → electric cylinder 71 active retraction) and the mechanical hydraulic path (arc plate 77 → push rod 736 → medium → push rod 735 → battery pack 72), the battery pack 72 quickly and stably retracts upward into the working chamber 5 in a very short time after the side collision, away from the bottom danger area of ​​the through groove 74.

[0038] It should be noted that: under normal conditions, when the user needs to close the additional storage space, a reset command is issued through the control system. The electric cylinder 71 retracts upward, causing the battery pack 72 to move upward. As the battery pack 72 moves upward, the fixing plate 53 moves upward with it, and the sliding shaft 52 slides in the opposite direction along the guide groove 51, i.e., vertical groove → arc groove → horizontal groove. The fixing plate 53 returns from vertical to horizontal, returning to above the elastic plate 63. Under its own elasticity and the pushing action of the fixing target, the elastic plate 63 gradually retracts into the square groove 62, causing the movable plate 64 to move upward, resealing the through groove 61, thus closing the additional storage space. The space is closed. At the same time, when the movable plate 64 moves upward, the push plate 65 moves upward synchronously with the movable plate 64. The arc-shaped guide surface 651 at the top of the push plate 65 contacts the side wall of the item spanning the through slot 1 61 and pushes the item to the side during the upward movement to prevent the item from blocking the through slot 1 61 and hindering the complete reset of the movable plate 64. The push rod 1 735 moves upward with the battery pack 72, the medium pressure in the cylinder 1 733 decreases, the medium in the cylinder 2 734 flows back, pushing the push rod 2 736 and the arc plate 77 to reset. The arc plate 77 moves downward along the guide slot 2 76 and re-closes the through slot 2 74. If an emergency retraction is triggered by a side collision, the battery pack 72 can be manually or automatically reset after the collision energy dissipates and the system detects safety. If the collision causes structural damage, it needs to be repaired and then reset.

[0039] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A new energy pickup truck chassis, comprising: The front part (1) and the rear part (2) are characterized in that: a chassis (3) is provided between the front part (1) and the rear part (2), and frame longitudinal beams (4) are provided on both sides of the chassis (3), a working cavity (5) is provided in the middle of the chassis (3), an expansion component (6) is provided on the top of the working cavity (5), and a battery component (7) is provided inside the working cavity (5); The expansion assembly (6) includes a through groove (61) on the chassis (3) at the top of the working cavity (5). The chassis (3) has square grooves (62) on the side of the through groove (61). An elastic plate (63) is slidably connected in the square groove (62). A movable plate (64) is fixedly connected to one end of each elastic plate (63) away from the square groove (62). A push plate (65) is rotatably connected to the movable plate (64). An arc-shaped guide surface is provided on the top of the push plate (65).

2. The new energy pickup truck chassis as described in claim 1, characterized in that: The working cavity (5) has symmetrical guide grooves (51) on both sides of the inner wall. Sliding shafts (52) are slidably connected in the guide grooves (51) on both sides. A fixing plate (53) is fixedly connected between the two sliding shafts (52). The fixing plate (53) is the same length and width as the elastic plate (63).

3. The new energy pickup truck chassis as described in claim 2, characterized in that: The guide groove (51) is composed of a horizontal groove, an arc groove and a vertical groove, and the top of the fixing plate (53) is provided with an arc surface (531).

4. The new energy pickup truck chassis as described in claim 2, characterized in that: The battery assembly (7) includes an electric cylinder (71) fixedly connected to the inner wall of the top of the working chamber (5). The output end of the electric cylinder (71) is fixedly connected to a battery pack (72). The top of the battery pack (72) is fixedly connected to the bottom of the movable plate (64). The battery pack (72) is rotatably connected to one end of the fixed plate (53). The working chamber (5) is provided with a pushing assembly (73) on one side of the electric cylinder (71). The chassis (3) is provided with a through groove (74) at the bottom of the working chamber (5). The two sides of the through groove (74) are provided with inclined surfaces (75) facing the battery pack (72). The working chamber (5) is provided with a guide groove (76) on both sides of the through groove (74). An arc plate (77) is slidably connected in the guide groove (76).

5. The new energy pickup truck chassis as described in claim 4, characterized in that: The pushing assembly (73) includes a connecting block (731) fixedly connected to the top of the working chamber (5). A connecting channel (732) is provided inside the connecting block (731). Two ends of the connecting block (731) are respectively connected to a first cylinder (733) and a second cylinder (734). The connecting block (731) is fixedly connected to the first cylinder (733) and the second cylinder (734) respectively. A push rod (735) is slidably connected inside the first cylinder (733). The end of the push rod (735) away from the first cylinder (733) is connected to the electric... The pool bag (72) is fixedly connected, and the second push rod (736) is slidably connected inside the second cylinder (734). The end of the second push rod (736) away from the second cylinder (734) is rotatably connected to the arc plate (77). The bottom of the first cylinder (733) and the second cylinder (734) are both provided with sealing rings. The end of the first push rod (735) located inside the first cylinder (733) is fixedly connected to the first limiting ring (737), and the end of the second push rod (736) located inside the second cylinder (734) is fixedly connected to the second limiting ring (738).

6. The new energy pickup truck chassis as described in claim 5, characterized in that: A buffer cavity (771) is provided on the side of the arc plate (77) away from the battery pack (72). A pressure sensor is provided in the buffer cavity (771) and is electrically connected to the electric cylinder (71). Multiple springs (772) are provided in the buffer cavity (771). A push block (773) is fixedly connected to the end of the arc plate (77) away from the push rod (736).

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