Collision self-power-off type electric vehicle

Abstract

The invention discloses a collision self-power-off type electric vehicle which comprises wheels, a vehicle frame and a battery bin provided with a power line. The frame comprises a front safety box, a rear bumper, two longitudinal beams, two cross beams, a longitudinal sliding rod and two longitudinal dowel bars, the rear ends of the two longitudinal beams are connected with the rear bumper, the two longitudinal beams are connected together through the two cross beams, the longitudinal sliding rod is connected between the two cross beams, the rear ends of the two longitudinal dowel bars are connected to the front side of the front cross beam, and the front bumper is connected to the front ends of the two longitudinal dowel bars. The two longitudinal dowel bars are aligned with the two longitudinal sliding rods, the battery bin is connected to the longitudinal sliding rods in a sliding mode, the two sides of the battery bin are fixed to the two longitudinal beams together, and a collision power-off switch which enables the battery to stop supplying power to the electric vehicle when the frame is collided in the front-back direction and the left-right direction is arranged in the battery bin. The invention has the advantage that the battery can stop supplying power when the four sides are collided, and solves the problem that the fire is easily caused when the electric appliance is short-circuited due to the fact that the power supply is not switched off after the existing automobile is collided.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle chassis, and particularly to a collision self-power-off electric vehicle. Background Art

[0002] New energy vehicles usually use batteries as power sources. The batteries are arranged on the upper side of the new energy vehicle chassis and can also be used as counterweights to improve the running stability of the new energy vehicle.

[0003] For example, in a Chinese patent document, a chassis assembly of an electric commercial vehicle disclosed on November 12, 2024 with the patent number CN2024112283912. Among them, the middle frame is connected between the front frame and the rear frame. The front frame is located in front of the middle frame, and the rear frame is located behind the middle frame. The middle frame and the rear frame are at the same vertical height, and the vertical height of the front frame is lower than that of the middle frame. The electric commercial vehicle includes a cab fixedly installed on the front frame, and a power battery pack fixedly installed on the middle frame and located below the middle frame. With such a setting, the main frame adopts a stepped structure with the front part lower and the rear part higher. The cab is arranged on the front frame, and the power battery pack is hung under the middle frame, effectively reducing the center of gravity of the whole vehicle, reducing the risk of rollover, and improving safety performance.

[0004] The deficiencies of the prior art are as follows: When a new energy vehicle is impacted by a large impact force in a car accident, the battery is connected. Due to a short circuit in the circuit, it is easy to catch fire, and it is not easy to rescue compared with traditional fuel vehicles. Summary of the Invention

[0005] The present invention aims to provide a collision self-power-off electric vehicle in which the battery can stop power supply when collisions occur on all four sides, solving the problem that the power supply of existing vehicles does not disconnect after a collision, which easily causes a fire when an electrical short circuit occurs.

[0006] The above technical problems are solved by the following technical solutions: A collision self-powered-off electric vehicle, including wheels, a frame supported on the wheels, and a battery compartment connected to the frame. The battery compartment is used to store the battery and is provided with a power cord detachably connected to the battery to introduce electricity to the motor. It is characterized in that the frame includes a front safety bumper, a rear bumper, two longitudinal beams with the rear ends connected to the rear bumper, two cross beams connecting the two longitudinal beams, a longitudinal sliding rod connected between the two cross beams, and two longitudinal force transmission rods with the rear ends connected to the front side of the cross beam located in the front. The front bumper is connected to the front ends of the two longitudinal force transmission rods, and the two longitudinal force transmission rods are aligned with the two longitudinal sliding rods. The battery compartment is slidably connected to the longitudinal sliding rod, and both sides of the battery compartment are fixed to the two longitudinal beams. A collision power-off switch is provided in the battery compartment, and the collision power-off switch is used to stop the battery from supplying power to the electric vehicle when the frame is collided in the front, rear, left, and right directions. In this technical solution, when any collision in the front, rear, left, or right of the vehicle causes the deformation of the vehicle body to be greater than the set amount, the battery compartment will cut off the power supply of the battery, thus avoiding the short circuit caused by the collision and the battery combustion.

[0007] Preferably, a longitudinal avoidance groove is provided on the bottom wall of the battery compartment. The collision power-off switch includes a vertical insertion post, two transverse push rods with one ends fixedly connected to the two longitudinal beams respectively, and two fixing rods with one ends fixedly connected to the two longitudinal sliding rods respectively. The other ends of the two fixing rods are respectively hinged to the lower ends of two swing rods through longitudinal hinge shafts. The upper ends of the swing rods are located in the longitudinal avoidance groove, and the lower ends of the two swing rods are located between the two transverse push rods and are aligned with the transverse push rods. A swing rod part conductive sheet for introducing electricity to the motor is provided on the inner side of the swing rod. Two insertion post part conductive sheets connected to the power cord of the battery compartment are provided on the vertical insertion post. The swing rods clamp the vertical insertion post, and the swing rod part conductive sheets of the two swing rods are respectively abutted against the two insertion post part conductive sheets. When the transverse push rod moves towards the swing rod, it can drive the swing rod to swing around the longitudinal hinge shaft so that the swing rod part conductive sheet is separated from the insertion post part conductive sheet. When a longitudinal collision occurs, the longitudinal sliding rod moves longitudinally relative to the battery compartment, so that the swing rod is disengaged from the vertical insertion post to achieve power-off; when a transverse collision occurs, the transverse push rod drives the swing rod to open, so that the swing rod is disengaged from the vertical insertion post to achieve power-off. A specific technical solution of the collision power-off switch is provided.

[0008] Preferably, there is a swing rod closing spring that drives the swing rod to close towards the vertical insertion post around the longitudinal hinge shaft. When the two swing rods are in the closed state under the action of the spring, they can prevent the vertical insertion post from being longitudinally inserted between the two swing rods. It can automatically close the two swing rods after the longitudinal movement caused by the collision is disengaged, avoiding the vertical insertion post being reinserted between the swing rods after the secondary reverse collision and the electricity being reconnected, further improving the safety during the collision.

[0009] Preferably, the battery compartment includes a bottom support and a compartment body detachably connected to the bottom support. During use, the battery is installed in the compartment body. The avoidance groove is provided on the bottom support, and the vertical insertion post is connected to the compartment body. When the two swing rods are in the closed state, the vertical insertion post can be inserted between the two swing rods, which can improve the convenience of resetting the vertical insertion post between the swing rods.

[0010] Preferably, an inverted step is provided on the swing rod, and a hook head is provided on the vertical insertion post. When the compartment body is connected to the bottom support and the vertical insertion post is located between the two swing rods, the hook head is hooked on the inverted step to prevent the vertical insertion post from being pulled out upward between the swing rods, which can improve the electrical connection reliability between the vertical insertion post and the swing rod during vibration.

[0011] Preferably, the vertical insertion post is telescopically connected to the lower surface of the compartment body. The compartment body is provided with a structure for maintaining the extended state of the insertion post to keep the vertical insertion post in the extended state. A contraction spring for the insertion post is provided between the bottom support and the vertical insertion post to drive the vertical insertion post to contract into the compartment body. When a lateral collision causes the swing rod and the vertical insertion post to become disengaged, the vertical insertion post is ejected by the contraction spring of the insertion post, so that the vertical insertion post cannot be automatically inserted between the swing rods again after the swing rods are closed, which improves the reliability of preventing electrical fire after a collision.

[0012] Preferably, the structure for maintaining the extended state of the insertion post includes a pin, a horizontal through hole provided in the compartment body, and a blocking hole provided in the vertical insertion post. When the pin passes through the horizontal through hole and the blocking hole at the same time, the vertical insertion post is maintained in the extended state, and the outer end of the pin extends out of the outer surface of the compartment body. After the vertical insertion post is inserted between the swing rods, the pin is pulled out, so that the vertical insertion post can automatically contract after the collision causes disconnection, thus reliably avoiding secondary closing.

[0013] Preferably, a vertical sliding hole is provided in the compartment body. The upper end of the vertical insertion post is provided with a sliding column slidably passing through the vertical sliding hole. The upper end of the vertical sliding hole is provided with a large-diameter section, and a positioning step is formed between the large-diameter section and the vertical sliding hole. The upper end of the sliding column is provided with an outward-turning edge. When the outward-turning edge is hooked on the positioning step, the blocking hole is aligned with the horizontal through hole, which can conveniently align the horizontal through hole with the blocking hole.

[0014] Preferably, the conductive sheet of the insertion post part is connected to the conductive core located inside the vertical insertion post. The conductive core is exposed on the upper end surface of the sliding column. The power lead-in wire of the battery compartment extends into the large-diameter section and is welded to the part of the conductive core exposed on the end surface of the sliding column, which can avoid wire interference with the movement of the vertical insertion post.

[0015] Preferably, a supporting plate is provided on the inner side of the longitudinal beam. A plurality of connecting ears that overlap on the supporting plate are provided on both lateral sides of the battery compartment. The connecting ears are provided with laterally extending connecting grooves that penetrate the upper and lower surfaces of the connecting ears. After a battery compartment fixing bolt passes through the connecting groove, it is threadedly connected to the supporting plate to fix the connecting ear to the connecting plate. When the longitudinal beam undergoes lateral deformation during a lateral collision, the supporting plate can produce a lateral relative displacement relative to the connecting ear, thereby preventing the battery compartment from being squeezed. The safety performance is better.

[0016] Preferably, bending guiding grooves that penetrate the cross beam vertically are provided on the front and rear sides of the two cross beams. The connection points of the two longitudinal sliding rods to the cross beam are located between two laterally distributed bending guiding grooves on the same cross beam. This can improve the reliability of the swing rod and the vertical insertion post disengaging during a longitudinal collision.

[0017] Preferably, the longitudinal beam includes a front section of the longitudinal beam and a rear section of the longitudinal beam. The front end of the front section of the longitudinal beam is connected to the rear surface of the cross beam located in the front, and the rear end is connected to the front surface of the longitudinal beam located in the rear. The front end of the rear section of the longitudinal beam is connected to the rear surface of the cross beam located in the rear, and the rear end is connected to the front surface of the rear bumper. This can enable the longitudinal beam to withstand a large longitudinal collision force even when the connection force between the cross beam and the longitudinal beam is small.

[0018] With the above solution, when the new energy vehicle to which the present invention is applied is impacted by a large impact force from any direction (front, rear, left, or right), the new energy vehicle can be powered off as a whole, avoiding the problem of the new energy vehicle catching fire due to a short circuit in the circuit, and improving the rescue efficiency and safety of the new energy vehicle during a car accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view schematic diagram of the present invention with the cabin removed; Figure 2 is Figure 1 a schematic enlarged view of the structure at A in Figure 3 is Figure 1 a top view of a partial enlarged schematic diagram example at B of Figure 4 is Figure 1 a C - C cross-sectional schematic diagram of Figure 5 is Figure 4 a partial enlarged schematic diagram at D of

[0020] In the figure: wheel 1, battery compartment 2, power cord 3, front safe 4, rear bumper 5, longitudinal beam 6, cross beam 7, longitudinal sliding rod 8, longitudinal force transmission rod 9, front section of longitudinal beam 10, rear section of longitudinal beam 11, supporting plate 12, connecting ear 13, connecting groove 14, battery compartment fixing bolt 15, bottom support 16, cabin 17, longitudinal avoidance groove 18, vertical insertion post 19, transverse push rod 20, fixing rod 21, longitudinal hinge shaft 37, swing rod 22, conductive sheet of swing rod part 23, conductive sheet of insertion post part 24, swing rod closing spring 25, hook head 26, structure for maintaining the extended state of insertion post 27, insertion post contraction spring 28, bolt 29, horizontal through hole 30, blocking hole 31, sliding column 32, large diameter section 33, outward turned edge 34, conductive core 35, bending guiding groove 36. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The terms "include" and "have" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusion. For example, a method or product including a series of technical features does not necessarily limit to those clearly listed technical features, but may also include other technical features that can be included in the method or product and are not clearly listed.

[0023] In the description of the present invention, it should be understood that the technical features defined by the terms "first", "second", etc. with a sequential concept are only for clearly describing the defined technical features, so that the defined technical features can be clearly distinguished from other technical features, rather than representing such naming in actual implementation. Therefore, it should not be construed as a limitation to the present invention.

[0024] See Figures 1 to 5, A collision self-power-off electric vehicle, comprising wheels 1, a frame supported on the wheels, and a battery compartment 2 connected to the frame. The battery compartment is used for storing batteries and is provided with a power cord 3 detachably connected to the battery to supply electricity to the motor. The frame includes a front safety bumper 4, a rear bumper 5, two longitudinal beams 6 with the rear ends connected to the rear bumper, two cross beams 7 connecting the two longitudinal beams, a longitudinal sliding rod 8 connected between the two cross beams, and two longitudinal force transmission rods 9 with the rear ends connected to the front side of the cross beam located in the front. The front bumper is connected to the front ends of the two longitudinal force transmission rods. The two longitudinal force transmission rods are aligned with the two longitudinal sliding rods. The battery compartment is slidably connected to the longitudinal sliding rods. The longitudinal beams include a front section 10 and a rear section 11 of the longitudinal beam. The front end of the front section of the longitudinal beam is connected to the rear surface of the cross beam located in the front, and the rear end is connected to the front surface of the longitudinal beam located in the rear. The front end of the rear section of the longitudinal beam is connected to the rear surface of the cross beam located in the rear, and the rear end is connected to the front surface of the rear bumper. Both sides of the battery compartment are fixed to the two longitudinal beams. Specifically, a support plate 12 is provided inside the longitudinal beam. A plurality of connecting ears 13 that overlap on the support plate are provided on both lateral sides of the battery compartment. The connecting ears are provided with a laterally extending connecting groove 14 that penetrates the upper and lower surfaces of the connecting ears. A battery compartment fixing bolt 15 passes through the connecting groove and is threadedly connected to the support plate to fix the connecting ear to the connecting plate. A collision power-off switch is provided inside the battery compartment. The collision power-off switch is used to stop the battery from supplying power to the electric vehicle when the frame is collided in the front, rear, left, and right directions.

[0025] The battery compartment includes a bottom support 16 and a cabin body 17 detachably connected to the bottom support. During use, the battery is installed inside the cabin body. A longitudinal avoidance groove 18 is provided on the bottom wall of the battery compartment. The collision power-off switch includes a vertical insertion post 19, two transverse push rods 20 with one ends fixedly connected to the two longitudinal beams respectively, and two fixing rods 21 with one ends fixedly connected to the two longitudinal sliding rods respectively. The other ends of the two fixing rods are respectively hinged to the lower ends of two swing rods 22 through a longitudinal hinge shaft 37. The upper ends of the swing rods are located inside the longitudinal avoidance groove. The lower ends of the two swing rods are located between the two transverse push rods and are aligned with the transverse push rods. A swing rod part conductive sheet 23 for supplying electricity to the motor is provided inside the swing rods. Two insertion post part conductive sheets 24 connected to the power cord of the battery compartment are provided on the vertical insertion post. The vertical insertion post is connected to the cabin body. When the two swing rods are in a closed state, the vertical insertion post can be inserted between the two swing rods. The swing rods clamp the vertical insertion post, and the swing rod part conductive sheets of the two swing rods are respectively abutted against the two insertion post part conductive sheets. When the fixing rods move towards the swing rods, they can drive the swing rods to swing around the longitudinal hinge shaft, so that the swing rod part conductive sheets are separated from the insertion post part conductive sheets. When a longitudinal collision occurs, the longitudinal sliding rod moves longitudinally relative to the battery compartment, so that the swing rod is disengaged from the vertical insertion post to achieve power-off; when a transverse collision occurs, the transverse push rod drives the swing rod to open, so that the swing rod is disengaged from the vertical insertion post to achieve power-off.

[0026] The swing rod and the driving swing rod are provided with a swing rod closing spring 25 that moves towards the vertical insertion post with the longitudinal hinge axis as the axis. When the two swing rods are in the closed state under the action of the spring, they can prevent the vertical insertion post from being inserted longitudinally between the two swing rods. The swing rod is provided with an inverted step, and the vertical insertion post is provided with a hook head 26. When the cabin is connected to the bottom support and the vertical insertion post is located between the two swing rods, the hook head is hooked on the resulting step to prevent the vertical insertion post from being pulled out upward between the swing rods. The vertical insertion post is telescopically connected to the lower surface of the cabin, and the cabin is provided with an insertion post extended state maintaining structure 27 for maintaining the vertical insertion post in the extended state. An insertion post contraction spring 28 for driving the vertical insertion post to contract into the cabin is provided between the bottom support and the vertical insertion post. The insertion post extended state maintaining structure includes a pin 29, a horizontal through hole 30 provided in the cabin, and a blocking hole 31 provided in the vertical insertion post. When the pin passes through the horizontal through hole and the blocking hole at the same time, the vertical insertion post is maintained in the extended state, and the outer end of the pin extends out of the outer surface of the cabin. A vertical sliding hole is provided in the cabin, and the upper end of the vertical insertion post is provided with a sliding post 32 that slidably passes through the vertical sliding hole. The upper end of the vertical sliding hole is provided with a large-diameter section 33, and a positioning step is formed between the large-diameter section and the vertical sliding hole. The upper end of the sliding post is provided with an outwardly turned edge 34. When the outwardly turned edge is hooked on the positioning step, the blocking hole is aligned with the horizontal through hole. The insertion post conductive sheet is connected to a conductive core 35 located inside the vertical insertion post. The conductive core is exposed on the upper end surface of the sliding post. The power supply lead-in wire of the battery compartment extends into the large-diameter section and is welded to the part of the conductive core exposed on the end surface of the sliding post. Bending guide grooves 36 that vertically penetrate the cross beam are provided on both the front and rear sides of the two cross beams. The connection points of the two longitudinal sliding rods to the cross beam are located between two horizontally distributed bending guide grooves on the same cross beam.

Claims

1. A collision self-powered-off electric vehicle, comprising wheels, a frame supported on the wheels, and a battery compartment connected to the frame. The battery compartment is used for storing batteries and is provided with a power cord that is detachably connected to the battery to introduce electricity to the motor. It is characterized in that, The frame includes a front safety bumper, a rear bumper, two longitudinal beams connected to the rear bumper at the rear end, two cross beams connecting the two longitudinal beams, a longitudinal sliding rod connected between the two cross beams, and two longitudinal force transmission rods with the rear ends connected to the front side of the cross beam located in the front. The front bumper is connected to the front ends of the two longitudinal force transmission rods. The two longitudinal force transmission rods are aligned with the two longitudinal sliding rods. The battery compartment is slidably connected to the longitudinal sliding rod. The two sides of the battery compartment are fixed to the two longitudinal beams. A collision power-off switch is provided in the battery compartment. The collision power-off switch is used to stop the battery from supplying power to the electric vehicle when the frame is collided in the front, rear, left, and right directions. A longitudinal avoidance groove is provided on the bottom wall of the battery compartment. The collision power-off switch includes a vertical insertion post, two transverse push rods with one ends fixedly connected to the two longitudinal beams respectively, and two fixing rods with one ends fixedly connected to the two longitudinal sliding rods respectively. The other ends of the two fixing rods are respectively hinged to the lower ends of two swing rods through longitudinal hinge shafts. The upper ends of the swing rods are located in the longitudinal avoidance groove. The lower ends of the two swing rods are located between the two transverse push rods and are aligned with the transverse push rods. A swing rod part conductive sheet for introducing electricity to the motor is provided on the inner side of the swing rod. Two insertion post part conductive sheets connected to the power supply lines of the battery compartment are provided on the vertical insertion post. The swing rods clamp the vertical insertion post. The swing rod part conductive sheets of the two swing rods are respectively abutted against the two insertion post part conductive sheets. When the transverse push rod moves towards the swing rod, it can drive the swing rod to swing around the longitudinal hinge shaft so that the swing rod part conductive sheet is separated from the insertion post part conductive sheet.

2. The collision self-powered-off electric vehicle according to claim 1, characterized in that, A swing rod closing spring that drives the swing rod to close towards the vertical insertion post around the longitudinal hinge shaft. When the two swing rods are in the closed state under the action of the spring, they can prevent the vertical insertion post from being longitudinally inserted between the two swing rods. It can automatically close the two swing rods after the longitudinal movement is disengaged during a collision, avoiding the vertical insertion post being re-inserted between the swing rods after a secondary reverse collision and causing the electricity to be reconnected, further improving the safety during a collision.

3. The collision self-power-off electric vehicle according to claim 1 or 2, characterized in that, The battery compartment includes a bottom tray and a cabin detachably connected to the bottom tray. During use, the battery is installed in the cabin. The avoidance groove is provided on the bottom tray. The vertical insertion post is connected to the cabin. When the two swing rods are in the closed state, the vertical insertion post can be inserted between the two swing rods.

4. The collision self-powered-off electric vehicle according to claim 3, wherein, The vertical insertion post is telescopically connected to the lower surface of the cabin. An insertion post extended state maintaining structure for maintaining the vertical insertion post in the extended state is provided on the cabin. An insertion post contraction spring for driving the vertical insertion post to contract into the cabin is provided between the bottom tray and the vertical insertion post. The insertion post extended state maintaining structure includes a pin, a horizontal through hole provided on the cabin, and a blocking hole provided on the vertical insertion post. When the pin passes through the horizontal through hole and the blocking hole at the same time, the vertical insertion post is maintained in the extended state, and the outer end of the pin extends out of the outer surface of the cabin.

5. The collision self-powered-off electric vehicle according to claim 4, characterized in that, A vertical sliding hole is provided in the cabin body. A sliding column is provided at the upper end of the vertical insertion post, and the sliding column is slidably inserted into the vertical sliding hole. A large-diameter section is provided at the upper end of the vertical sliding hole, and a positioning step is formed between the large-diameter section and the vertical sliding hole. An outwardly turned edge is provided at the upper end of the sliding column, and when the outwardly turned edge is hooked on the positioning step, the blocking hole is aligned with the horizontal through hole.

6. The collision self-powered-off electric vehicle according to claim 5, characterized in that, The conductive sheet of the insertion post part is connected to the conductive core located in the vertical insertion post. The conductive core is exposed on the upper end surface of the sliding column. The power supply lead-in wire of the battery compartment extends into the large-diameter section and is welded to the part of the conductive core exposed on the end surface of the sliding column.

7. The collision self-powered-off electric vehicle according to claim 1 or 2 or 3, characterized in that, A supporting plate is provided on the inner side of the longitudinal beam. A plurality of connecting ears that overlap on the supporting plate are provided on both the left and right sides of the battery compartment. The connecting ears are provided with a laterally extending connecting groove that penetrates the upper and lower surfaces of the connecting ears. After the battery compartment fixing bolt passes through the connecting groove, it is threadedly connected to the supporting plate to fix the connecting ears to the connecting plate.

8. The collision self-powered-off electric vehicle according to claim 1 or 2 or 3, characterized in that Bending guiding grooves that penetrate the cross beams vertically are provided on the front and rear sides of the two cross beams. The connection points of the two longitudinal sliding rods to the cross beams are located between two laterally distributed bending guiding grooves on the same cross beam.

9. The collision self-powered-off electric vehicle according to claim 1 or 2 or 3, characterized in that, The longitudinal beam includes a front section of the longitudinal beam and a rear section of the longitudinal beam. The front end of the front section of the longitudinal beam is connected to the rear surface of the cross beam in the front, and the rear end is connected to the front surface of the longitudinal beam in the rear. The front end of the rear section of the longitudinal beam is connected to the rear surface of the cross beam in the rear, and the rear end is connected to the front surface of the rear bumper.

Images