Electric vehicle warning device

Abstract

This invention discloses an electric vehicle early warning device, comprising an early warning partition installed between the bottom surface of the power battery and the battery compartment; the early warning partition includes an upper partition, a lower partition, a frame, pipe joints, pipes, core rods, and pull ropes. The frame is fixed between the upper and lower partitions, and the pipe joints are fixed within the cavity formed between the upper and lower partitions. Multiple pipe joints and pipes are provided, and the pipes are connected in a star or frame shape via the pipe joints. Each pipe has a core rod arranged along a hollow line inside, the diameter of which is smaller than the inner diameter of the pipe. Multiple pull ropes are arranged in a mesh within the cavity formed between the upper and lower partitions. The pipes and core rods are made of conductive material and are connected to an active circuit with an alarm device. After installation on an electric vehicle, it can monitor the deformation of the battery and battery compartment and issue an alarm. Compared with existing technologies, it has higher monitoring accuracy, simpler structure, lower failure rate, and better reliability.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, and in particular relates to an electric vehicle warning device. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source and integrate advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. New energy vehicles include hybrid electric vehicles, pure electric vehicles, and fuel cell electric vehicles.

[0003] During the use of electric vehicles, battery bulging and deformation may occur, or the battery or battery compartment may be deformed due to accidental collisions or punctures. If not handled in time, this may lead to greater malfunctions or even safety issues. Therefore, in order to improve the safety of the warning device for electric vehicles equipped with onboard power batteries, it is necessary to issue an alarm when the power battery and battery compartment are in such condition, so that appropriate measures can be taken in time to avoid greater accidents and economic losses. Patent applications 202110807111.3 and EP3392070A1 disclose warning technologies that can deal with battery or battery compartment deformation. However, the gaps between adjacent bare wires create a blind spot in the monitoring. That is, when the deformation of the battery or battery compartment is located in the gap between adjacent bare wires, the warning cannot be triggered, resulting in low monitoring accuracy. Densely arranging bare wires will greatly increase the failure rate. Excessively long bare wires are also prone to false triggering due to vibration and temperature changes, causing monitoring failure. Further improvements are urgently needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an electric vehicle early warning device, which forms an early warning module. After being installed on an electric vehicle, it can monitor the deformation of the battery and battery compartment and issue an alarm. Compared with existing technologies, it has higher monitoring accuracy, simpler structure, lower failure rate, and better reliability.

[0005] In this invention, the electric vehicle frame is provided with a battery compartment for installing a power battery; the electric vehicle warning device of this invention includes a warning partition installed between the bottom surface of the power battery and the battery compartment; the warning partition includes an upper partition, a lower partition, a frame, a pipe joint, a pipe, a core rod, and pull ropes, the frame is fixed between the upper and lower partitions, the pipe joint is fixed in the cavity formed between the upper and lower partitions, multiple pipe joints and pipes are provided, and the pipes are connected to each other in a star or frame shape through the pipe joints; a core rod is arranged along the hollow line inside each pipe, and the diameter of the core rod is smaller than the inner diameter of the pipe; multiple pull ropes are arranged in a net in the cavity formed between the upper and lower partitions, each pull rope is wound and connected to the pipe that intersects it, the end of each pull rope is fixed to the frame, the pipe extending to the frame is fixedly connected to the frame, and the core rod extending to the frame is tightly fixed to the pipe by an annular insulating sleeve, the pipe and the core rod are both conductive materials and connected to a In an active circuit with an alarm device, the distance between the core rod and the tube is no more than 10mm. The tube is made of copper tubing with a wall thickness of less than 1.5mm. The pull rope is arranged in a mesh pattern, and its density can be reasonably designed according to the monitoring accuracy requirements. Since the pull rope is wrapped around the tube, when the pull rope is subjected to external force, it will pull the tube and cause the tube to bend to a certain extent. By connecting the core rod and the tube to the active circuit with the alarm device to form a loop, when the battery bulges or deforms, or when the battery compartment is impacted or punctured, there is a high probability that it will squeeze or puncture the warning partition, causing the warning partition to deform due to external force. When the tube and / or the pull rope are also subjected to external force, the safe distance between the tube and the core rod will be broken. When the core rod and the tube become conductive, the active circuit with the alarm device will be closed, and the alarm device will be powered on to sound an alarm. Higher monitoring accuracy can be achieved by increasing the density of the pull rope arrangement. The structure is simple, there is no need to increase the density of the tube and the core rod arrangement, the failure rate is low, and the reliability is good.

[0006] Furthermore, the pipe fitting includes a connecting seat and a hollow cross joint. The connecting seat is vertically fixed at the center of the cross joint, and the end of the pipe is threaded to the branch pipe of the cross joint. The core rod inside each pipe is connected to the middle section of the connecting seat. The center of the cross joint has a through hole for the connecting seat to pass through. One end of the connecting seat has a locking platform that locks into the end of the through hole, and the other end of the connecting seat has a hook that can pass through the through hole and lock into the other end of the through hole. The connection structure is stable and facilitates assembly during production.

[0007] Furthermore, the middle section of the connector is made of conductive material, the two ends are made of insulating material, the cross connector is made of conductive material, and the connector and the cross connector are insulated from each other. Any tube and any core rod can be connected in the active circuit to form a mutually conductive whole between each tube and each core rod. Therefore, only one tube and one core rod need to be connected to the active circuit.

[0008] Furthermore, the pipe joint also includes a connecting pipe, which is made of conductive material. One end of the connecting pipe is located inside the cross joint and fixed to the middle section of the connecting seat. The other end of the connecting pipe extends into the inside of the pipe. The end of the core rod is inserted into the corresponding connecting pipe and electrically connected to it. In the prior art, the insulating support structure provides support and isolation between the bare wire and the protective plate, thus hindering the contact between the bare wire and the protective plate and creating a blind spot in the monitoring. That is, when the deformation of the battery or battery compartment is located at the position of the insulating support, the warning cannot be triggered, thus resulting in a decrease in monitoring accuracy. When the position of the cross joint in the electric vehicle warning device of the present invention is subjected to external force, the connecting seat and the connecting pipe fixed on the connecting seat will shift upward or downward, thereby destroying the safe distance between the pipe and the connecting pipe. When the connecting pipe and the pipe become conductive, the active circuit with the alarm device will be closed, and the alarm device will be powered on to issue an alarm, which can improve the monitoring accuracy compared with the prior art.

[0009] Furthermore, the inner wall of the connecting tube is provided with an annular boss, the cross-sectional shape of which is semi-circular, and the minimum inner diameter of the annular boss is the same as the diameter of the end of the core rod; the core rod is inserted into the annular boss, which can reduce the obstruction caused by the core rod to the connecting tube as it moves up or down with the connecting seat.

[0010] The beneficial effects of the present invention are: the electric vehicle warning device of the present invention forms a warning module, which, after being installed on the electric vehicle, can monitor the deformation of the battery and battery compartment and issue an alarm. Compared with the prior art, it has higher monitoring accuracy, simpler structure, lower failure rate and better reliability. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0012] Figure 1 This is a schematic diagram of the structure of an electric vehicle;

[0013] Figure 2 This is a schematic diagram of the installation structure between the power battery and the battery compartment.

[0014] Figure 3 This is a schematic diagram of the structure of the present invention;

[0015] Figure 4 This is a cross-sectional schematic diagram of the present invention;

[0016] Figure 5 This is a schematic diagram of a star-shaped structure formed by connecting pipes with pipe fittings. Detailed Implementation

[0017] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0018] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by those skilled in the art to which this invention pertains.

[0019] In this embodiment, the electric vehicle frame 1 is provided with a battery compartment 2 for installing the power battery 3; the electric vehicle warning device in this embodiment includes a warning partition 4 installed between the bottom surface of the power battery 3 and the battery compartment 2; the warning partition 4 includes an upper partition 12, a lower partition 13, a frame 15, a pipe joint, a pipe 10, a core rod 7, and a pull rope 11. The frame 15 is fixed between the upper partition 12 and the lower partition 13, and the pipe joint is fixed in the cavity formed between the upper partition 12 and the lower partition 13. Multiple pipe joints and pipes 10 are provided, and the pipes 10 are connected to each other in a star shape or a frame shape through the pipe joints; each Inside each tube 10, a core rod 7 is arranged along a hollow line. The diameter of the core rod 7 is smaller than the inner diameter of the tube 10. Multiple pull ropes 11 are arranged in a net-like pattern in the cavity formed between the upper partition 12 and the lower partition 13. Each pull rope 11 is wound and connected to the tube 10 that it intersects. The end of each pull rope 11 is fixed to the frame 15. The tube 10 extending to the frame 15 is fixedly connected to the frame 15. The core rod 7 extending to the frame 15 is tightly fixed to the tube 10 by an annular insulating sleeve 14. Both the tube 10 and the core rod 7 are made of conductive material and are connected to an active circuit with an alarm device. Figure 3 The 10 middle pipes are connected in a frame shape by pipe fittings. Figure 5The tubes 10 are connected in a star shape via pipe joints; the distance between the core rod 7 and the tubes 10 is no more than 10mm; the tubes 10 are made of copper tubing with a wall thickness of less than 1.5mm, and the pull ropes 11 are arranged in a mesh pattern, the density of which can be reasonably designed according to the monitoring accuracy requirements. Since the pull ropes 11 are wrapped around the tubes 10, when the pull ropes 11 are subjected to external force, they will pull the tubes 10, causing the tubes 10 to bend to a certain extent. By connecting the core rod 7 and the tubes 10 to the active circuit with the alarm device to form a loop, when the battery bulges or deforms or the battery compartment 2 is impacted... When the device is struck or punctured, there is a high probability that it will squeeze or puncture the warning partition 4, causing the warning partition 4 to deform due to external force. When the pipe 10 and / or the pull rope 11 are also subjected to external force, the safe distance between the pipe 10 and the core rod 7 will be broken. When the core rod 7 and the pipe 10 become conductive, the active circuit with the alarm device will be closed, and the alarm device will be powered on to sound an alarm. Higher monitoring accuracy can be achieved by increasing the arrangement density of the pull rope 11. The structure is simple, there is no need to increase the arrangement density of the pipe 10 and the core rod 7, the failure rate is low, and the reliability is good.

[0020] In this embodiment, the pipe fitting includes a connecting seat 5 and a hollow cross joint 6. The connecting seat 5 is vertically fixed at the center of the cross joint 6. The end of the pipe 10 is threadedly connected to the branch pipe of the cross joint 6. The core rod 7 inside each pipe 10 is connected to the middle section of the connecting seat 5. The center of the cross joint 6 is provided with a through hole for the connecting seat 5 to pass through. One end of the connecting seat 5 is provided with a locking platform that is locked at the end of the through hole. The other end of the connecting seat 5 is provided with a hook that can pass through the through hole and be locked at the other end of the through hole. The connection structure is stable and facilitates assembly during production.

[0021] In this embodiment, the middle section of the connector 5 is made of conductive material, and both ends are made of insulating material. The cross connector 6 is made of conductive material. The connector 5 and the cross connector 6 are insulated from each other. Any tube 10 and any core rod 7 can be connected in the active circuit to form a mutually conductive whole between each tube 10 and each core rod 7. Therefore, it is only necessary to connect one tube 10 and one core rod 7 to the active circuit.

[0022] In this embodiment, the pipe joint further includes a connecting pipe 9, which is made of conductive material. One end of the connecting pipe 9 is located inside the cross joint 6 and fixed to the middle section of the connecting seat 5. The other end of the connecting pipe 9 extends into the inside of the pipe 10. The end of the core rod 7 is inserted into the corresponding connecting pipe 9 and electrically connected to it. The existing insulating support structure provides support and isolation between the bare wire and the protective plate, thus hindering the contact between the bare wire and the protective plate and forming a blind spot in the monitoring. That is, when the deformation of the battery or battery compartment 2 is located at the position of the insulating support, the warning cannot be triggered, thus resulting in a decrease in monitoring accuracy. When the position of the cross joint 6 in the electric vehicle warning device of the present invention is subjected to external force, the connecting seat 5 and the connecting pipe 9 fixed on the connecting seat 5 will shift upward or downward, thereby destroying the safe distance between the pipe 10 and the connecting pipe 9. When the connecting pipe 9 and the pipe 10 are conductive, the active circuit with the alarm device will be closed, and the alarm device will be powered on to issue an alarm. Compared with the prior art, this can improve the monitoring accuracy.

[0023] In this embodiment, the inner wall of the connecting pipe 9 is provided with an annular boss 8. The cross-sectional shape of the annular boss 8 is semi-circular. The minimum inner diameter of the annular boss 8 is the same as the diameter of the end of the core rod 7. The core rod 7 is inserted into the annular boss 8, which can reduce the obstruction caused by the core rod 7 to the connecting pipe 9 as it moves up or down with the connecting seat 5.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An electric vehicle warning device, wherein the electric vehicle frame is provided with a battery compartment for mounting a power battery; characterized in that: The system includes a warning partition installed between the bottom of the power battery and the battery compartment. The warning partition comprises an upper partition, a lower partition, a frame, pipe joints, pipes, core rods, and pull ropes. The frame is fixed between the upper and lower partitions. The pipe joints are fixed within the cavity formed between the upper and lower partitions. Multiple pipe joints and pipes are provided, and the pipes are connected in a star or frame shape via the pipe joints. Each pipe has a core rod arranged along a hollow line inside, with the core rod's diameter smaller than the pipe's inner diameter. Multiple pull ropes are arranged in a mesh within the cavity formed between the upper and lower partitions. Each pull rope is wound and connected to the pipes it intersects with. The end of each pull rope is fixed to the frame. The pipes extending to the frame are fixedly connected to the frame, and the core rods extending to the frame are connected to the pipes. The tube and core rod are both made of conductive material and are connected to an active circuit with an alarm device, secured by an annular insulating sleeve. The tube joint includes a connecting seat and a hollow cross-shaped connector. The connecting seat is vertically fixed at the center of the cross-shaped connector. The end of the tube is threaded to a branch of the cross-shaped connector. The core rod inside each tube is connected to the middle section of the connecting seat. The tube joint also includes a connecting tube, which is made of conductive material. One end of the connecting tube is located inside the cross-shaped connector and fixed to the middle section of the connecting seat. The other end of the connecting tube extends into the tube. The end of the core rod is inserted into the corresponding connecting tube and electrically connected to it. The inner wall of the connecting tube is provided with an annular boss. The cross-sectional shape of the annular boss is semi-circular, and the minimum inner diameter of the annular boss is the same as the diameter of the end of the core rod.

2. The electric vehicle early warning device according to claim 1, characterized in that: The middle section of the connector is made of conductive material, and both ends are made of insulating material. The cross connector is made of conductive material. The connector and the cross connector are insulated from each other. Any tube and any core rod can be connected to the active circuit.

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