Intelligent charging protection device for new energy automobile

Abstract

The invention discloses an intelligent charging protection device for a new energy automobile, and belongs to the technical field of charging protection of the new energy automobile, the intelligent charging protection device comprises an embedded box body embedded in the ground, a charging pile is arranged on the side edge of the embedded box body, and a positioning protective cover is installed in the middle of the upper portion of the embedded box body. A smoke sensor is installed in the positioning shield and used for monitoring fire signals, movable shields are installed on the left side and the right side of the positioning shield, a plurality of supporting frameworks are evenly distributed on the movable shields, and the supporting frameworks at the ends, close to the positioning shield, of the movable shields are fixedly connected with the positioning shield. According to the intelligent charging protection device for the new energy automobile, by arranging the movable spraying block, when the external temperature is too high, blowing cooling can be conducted on a battery at the bottom of the charging automobile through the spraying block, and meanwhile in the automobile process and when the battery is on fire due to thermal runaway, spraying fire extinguishing can be conducted on the battery through the spraying block.

Description

Technical Field

[0001] This invention relates to the field of charging protection technology for new energy vehicles, specifically to an intelligent charging protection device for new energy vehicles. Background Technology

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as their power source. When charging new energy vehicles, corresponding protective devices are usually used to deal with the situation in time if the battery thermal runaway occurs during the charging process.

[0003] For example, CN118807146A discloses a modular automatic fire extinguishing device and method for electric vehicle charging piles, which includes an installation mechanism located above the parking lot and equipped with a movable walking mechanism. A fire extinguishing mechanism is located below the installation mechanism and is connected to the walking mechanism so that the walking mechanism drives the fire extinguishing mechanism to move along the installation mechanism. The installation mechanism is equipped with a monitoring system and a control system, and the walking mechanism, the fire extinguishing mechanism, and the monitoring system are all electrically connected to the control system.

[0004] The existing technology has the following technical problems: When the existing car protection device is used, it can shield and isolate the burning car when the car is charging and extinguish the fire using the internal fire extinguishing mechanism. However, in general use, it can only play a fire extinguishing role. Especially in high ambient temperature environments, it is not convenient to cool down the battery at the bottom of the car while the car is charging, so as to prevent thermal runaway of the battery during charging.

[0005] Therefore, we propose an intelligent charging protection device for new energy vehicles to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent charging protection device for new energy vehicles, in order to solve the problem mentioned in the background art. When a car catches fire while charging, the existing car protection devices on the market can only shield and isolate the burning car through the protective mechanism and extinguish the fire using the internal fire extinguishing mechanism. However, in general use, they can only play a fire extinguishing role. Especially in high ambient temperature environments, it is not convenient to cool down the battery at the bottom of the car while it is charging, so as to prevent thermal runaway of the battery during charging.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an intelligent charging protection device for new energy vehicles, comprising a pre-embedded box embedded in the ground, a charging pile provided on the side of the pre-embedded box, a positioning cover installed in the upper center of the pre-embedded box, a smoke sensor installed inside the positioning cover for monitoring fire signals, and movable covers installed on the left and right sides of the positioning cover, with multiple support frames evenly distributed on the movable covers, and the support frame of the movable cover near the positioning cover fixedly connected to the positioning cover, the support frame of the support frame away from the positioning cover connected to a movable wheel, and the central shaft of the movable wheel connected to the output shaft of a motor, a spray block installed in the center of the pre-embedded box, a guide nozzle provided at the upper end of the spray block, and a transmission component connected to the lower end of the spray block for controlling the reciprocating movement of the spray block under the vehicle, the center of the spray block connected to a water storage device via a water supply hose and a pump, and a solenoid valve installed at the end of the water supply hose near the spray block.

[0008] Preferably, a piston plate is installed inside the spray block, and a pressure rod is fixed to one end of the piston plate facing the outside of the spray block. The piston plate is connected to the spray block by a first spring, and a blocking frame is installed in the middle of the spray block. The lower middle part of the blocking frame is connected to the telescopic end of the first cylinder, and the first cylinder is installed in the lower middle part of the spray block.

[0009] By adopting the above technical solution, the first cylinder can control the blocking frame to move along the vertical direction of the spray block.

[0010] Preferably, the piston plate is circumferentially wrapped with a sealing ring, and the piston plate can slide inside the spray block. Multiple guide nozzles are evenly distributed above the spray block. Sealing plates are fixed on the left and right sides of the spray block, and the upper surface of the sealing plates is in contact with the inner wall of the pre-embedded box.

[0011] By adopting the above technical solution, the movement of the piston plate inside the spray block allows the airflow inside the spray block to be ejected outward through the guide nozzle, and the airflow ejected outward through the guide nozzle can blow air onto the bottom of the charging car.

[0012] Preferably, the longitudinal section of the blocking frame is set as a "U" shaped structure, and the blocking frame can slide on the spray block, and the side wall of the blocking frame is also fixed with a sealing ring.

[0013] By adopting the above technical solution, the upper end of the blocking frame extends into the interior of the spray block, thereby dividing the interior of the spray block into two functional cavities.

[0014] Preferably, the transmission component includes a reciprocating lead screw and a limiting rod that are installed through the bottom of the spray block, and the reciprocating lead screw is fixed to the output end of the servo motor, and the spray block can slide on the limiting rod.

[0015] By adopting the above technical solution, the rotation of the reciprocating screw enables the threaded spray block to reciprocate on the guide rod.

[0016] Preferably, air intake pipes are installed on both sides of the middle part of the positioning cover, and the upper end of the air intake pipe is connected to the fixed pipe. The upper end of the fixed pipe is connected to the negative pressure fan, and a purification component is installed between the fixed pipe and the negative pressure fan.

[0017] By adopting the above technical solution, the purification component is installed between the fixed pipe and the negative pressure fan. When the negative pressure fan draws air, the exhaust gas inside the fixed pipe can be filtered and purified by the purification component first.

[0018] Preferably, the upper end of the suction pipe can rotate on the fixed pipe, and the fixed pipe and the suction pipe are connected to each other. The lower end of the suction pipe is fixed with a transmission gear, and the outer side of the transmission gear is meshed with an adjusting gear frame. The side of the adjusting gear frame is connected to the pre-embedded box through a telescopic rod, and a second spring is sleeved on the outer side of the telescopic rod. The interior of the pre-embedded box is fixed with a second cylinder, and the telescopic end of the second cylinder is fixed with a baffle plate.

[0019] By adopting the above technical solution, after the obstruction plate moves up, it can fit against the adjusting gear frame and block it, thereby restricting the movement of the adjusting gear frame.

[0020] Preferably, the outer surface contours of the adjacent ends of the adjusting gear and the pressure rod are both set to arc shape, and the stiffness coefficient of the second spring is greater than that of the first spring.

[0021] By adopting the above technical solution, when the pressure rod comes into contact with the arc-shaped end of the adjusting gear during the movement of the spray block, the pressure rod can first move on the spray block. When the pressure rod moves to its limit and the spray block continues to move, the pressure rod can be used to push the adjusting gear to move.

[0022] Preferably, the obstruction plate is in contact with the adjusting gear in the initial state, and when the car battery experiences thermal runaway, the second cylinder controls the obstruction plate to descend and disengage from the adjusting gear.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the intelligent charging protection device for new energy vehicles, by setting a movable spray block, can blow air towards the battery at the bottom of the charging vehicle to cool it down when the outside temperature is too high. At the same time, when the battery thermally runs away and catches fire during the charging process, the spray block can spray the battery to extinguish the fire. 1. By blocking the adjusting gear frame with the obstruction plate, when the spray block moves back and forth, the adjusting gear frame can push the pressure rod and piston plate, so that the piston plate moves back and forth under the action of the first spring. The reciprocating movement of the piston plate can squeeze the airflow inside the spray block out through the guide nozzle. The airflow sprayed by the spray block towards the battery at the bottom of the car can accelerate the airflow around the battery at the bottom of the car when the outside temperature is too high, assist the battery to dissipate heat quickly, and reduce the risk of thermal runaway during charging. 2. By moving the blocking frame upward, the interior of the spray block can be divided into two functional chambers. Water mist can be sprayed outward through the guide nozzle above the middle chamber of the spray block, thereby extinguishing the thermal runaway battery at the bottom of the car. After the piston plate moves, the airflow in the side chamber inside the spray block can be squeezed outward through the corresponding guide nozzle. The squeezed airflow can make the sprayed water mist more dispersed, so that the water mist can extinguish the thermal runaway battery evenly. 3. By adjusting the reciprocating movement of the gear frame under pressure, the meshing transmission gears can drive the suction pipe to rotate reciprocally. The reciprocating rotation of the suction pipe can improve the suction range of the smoke. Attached Figure Description

[0024] Figure 1 This is a frontal perspective view of the present invention; Figure 2 This is a schematic diagram of the suction tube and fixing tube structure of the present invention; Figure 3 This is a schematic diagram of the positioning shield and movable shield structure of the present invention; Figure 4 This is a schematic diagram of the spray block and sealing plate structure of the present invention; Figure 5 This is a schematic diagram of the water delivery hose and solenoid valve structure of the present invention; Figure 6 This is a schematic diagram of the piston plate and pressure rod structure of the present invention; Figure 7 This is a schematic diagram of the structure of the blocking frame after it has been moved into place according to the present invention; Figure 8 This is a schematic diagram of the second cylinder and the obstruction plate structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Embedded housing; 2. Ground; 3. Charging pile; 4. Positioning cover; 5. Movable cover; 6. Support frame; 7. Movable wheel; 8. Spray block; 801. Piston plate; 802. Pressure rod; 803. First spring; 804. Blocking frame; 805. First cylinder; 9. Guide nozzle; 10. Sealing plate; 11. Reciprocating screw; 12. Servo motor; 13. Limiting rod; 14. Water supply hose; 15. Solenoid valve; 16. Suction pipe; 17. Fixed pipe; 18. Negative pressure fan; 19. Purification component; 20. Transmission gear; 21. Adjusting gear frame; 22. Telescopic rod; 23. Second spring; 24. Second cylinder; 25. Blocking plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1-9Existing car protection devices, when in use, shield and isolate the burning car during charging fires, and extinguish the fire using an internal fire suppression system. However, in overall use, they only serve a fire suppression function. Especially in high-temperature environments, they are not convenient for cooling the battery under the car during charging, thus failing to prevent thermal runaway. To solve this technical problem, this embodiment discloses the following technical content: an intelligent charging protection device for new energy vehicles, including a pre-embedded box 1 embedded in the ground 2, a charging pile 3 installed on the side of the pre-embedded box 1, and the upper part of the pre-embedded box 1... A positioning cover 4 is installed in the center of the enclosure. A smoke sensor is installed inside the positioning cover 4 to monitor fire signals. Movable covers 5 are installed on the left and right sides of the positioning cover 4. Multiple support frames 6 are evenly distributed on the movable covers 5. The support frame 6 at the end of the movable cover 5 closest to the positioning cover 4 is fixedly connected to the positioning cover 4, while the support frame 6 at the end furthest from the positioning cover 4 is connected to a movable wheel 7. The central shaft of the movable wheel 7 is connected to the motor output shaft. A spray block 8 is installed in the center of the pre-embedded housing 1. A guide nozzle 9 is provided at the upper end of the spray block 8, and the lower end of the spray block 8 is connected to a transmission component. The transmission component is used for... The spray block 8 is controlled to reciprocate at the bottom of the vehicle. The middle of the spray block 8 is connected to a water storage device via a water hose 14 and a pump. A solenoid valve 15 is installed at the end of the water hose 14 near the spray block 8. A piston plate 801 is installed inside the spray block 8, and a pressure rod 802 is fixed to the end of the piston plate 801 facing outwards. The piston plate 801 is connected to the spray block 8 via a first spring 803. A blocking bracket 804 is installed in the middle of the spray block 8. The lower middle of the blocking bracket 804 is connected to the telescopic end of a first cylinder 805, which is installed in the lower middle of the spray block 8. The piston plate 801 circumferentially encloses... The spray block 8 is wrapped with a sealing ring and the piston plate 801 can slide inside the spray block 8. Multiple guide nozzles 9 are evenly distributed on the top of the spray block 8. Sealing plates 10 are fixed on the left and right sides of the spray block 8, and the upper surface of the sealing plate 10 is in contact with the inner wall of the pre-embedded box 1. The longitudinal section of the blocking frame 804 is set as a "U" shaped structure, and the blocking frame 804 can slide on the spray block 8. Sealing rings are also fixed on the side walls of the blocking frame 804. The transmission components include a reciprocating screw 11 and a limiting rod 13 that are installed through the bottom of the spray block 8. The reciprocating screw 11 is fixed on the output end of the servo motor 12, and the spray block 8 can slide on the limiting rod 13.

[0028] The middle two sides of the positioning cover 4 are equipped with suction pipes 16, and the upper end of the suction pipe 16 is connected to the fixed pipe 17. The upper end of the fixed pipe 17 is connected to the negative pressure fan 18. A purification component 19 is installed between the fixed pipe 17 and the negative pressure fan 18. The upper end of the suction pipe 16 can rotate on the fixed pipe 17. The fixed pipe 17 and the suction pipe 16 are connected to each other. The lower end of the suction pipe 16 is fixed with a transmission gear 20. The outer side of the transmission gear 20 is meshed with an adjusting gear frame 21. The side of the adjusting gear frame 21 is connected to the pre-embedded box 1 through a telescopic rod 22. A second spring 23 is sleeved on the outer side of the telescopic rod 22. A second cylinder 24 is fixed inside the pre-embedded box 1. A baffle plate 25 is fixed at the telescopic end of the second cylinder 24. The outer surface contours of the adjacent ends of the adjusting gear frame 21 and the pressure rod 802 are both set as arcs.

[0029] When a new energy vehicle is charging, it drives into the interior of the positioning cover 4 and then connects to the charging gun on the charging pile 3 for charging. When the outside temperature is too high, the solenoid valve 15 on the water supply hose 14 is closed, and then the servo motor 12 is turned on. After the servo motor 12 is turned on, the reciprocating screw 11 rotates. After the reciprocating screw 11 rotates, the threaded spray block 8 can reciprocate on the limit rod 13, so that the spray block 8 can move at the bottom of the vehicle. When the spray block 8 moves, it can drive the pressure rod 802 to move synchronously. After the pressure rod 802 moves, its arc-shaped end contacts the arc-shaped end of the adjusting gear frame 21. Because the adjusting gear frame 21 is blocked by the obstruction plate 25 in the initial state, the adjusting gear frame 21 will not move towards the outside of the pre-embedded box 1. At this time, the adjusting gear frame 21 squeezes the pressure rod 802. The pressure rod 802 drives the piston plate 801 to move toward the center of the spray block 8. At the same time, the solenoid valve 15 on the water supply hose 14 is closed, so the airflow inside the spray block 8 will be sprayed out toward the battery at the bottom of the car through the guide nozzle 9. After the spray block 8 moves, the pressure rod 802 on it disengages from the adjusting gear 21. The pressure rod 802 and the piston plate 801 are reset and rebound under the action of the first spring 803. After the piston plate 801 is reset, it can use the guide nozzle 9 to draw the external airflow into the interior of the spray block 8. This cycle repeats. By continuously spraying air toward the battery at the bottom of the car, the temperature around the car battery can be reduced at high temperatures, thus reducing the risk of thermal runaway when the car battery is charging under high external temperatures. When a car experiences thermal runaway during battery charging, a smoke sensor inside the positioning cover 4 monitors the smoke signal. Upon detection, the motor controls the rotating wheel 7 to rotate, which in turn rotates the support frame 6 on the movable cover 5. This causes the movable cover 5 to seal the end opening of the positioning cover 4, thus shielding the thermally runaway car and preventing the fire from spreading. Simultaneously, the solenoid valve 15 on the water delivery hose 14 is opened, and the first cylinder 805 controls the blocking frame 804 to move upwards. The moving blocking frame 804 separates the internal cavity of the spray block 8, allowing the water pump to draw water from the storage device and channel it through the water delivery hose. 14. Water is delivered to the middle cavity inside the spray block 8 and sprayed outward to the bottom of the car through the guide nozzle 9 above the middle cavity, thereby extinguishing the thermal runaway battery. At the same time, when the spray block 8 moves, the side pressure rod 802 contacts the adjusting gear 21, and the adjusting gear 21 squeezes the pressure rod 802. The pressure rod 802 drives the piston plate 801 to move towards the center of the spray block 8. When the piston plate 801 moves, it can squeeze the airflow in the side cavity inside the spray block 8, which is blocked by the blocking frame 804, outward through the guide nozzle 9 above. The airflow can make the water mist sprayed from the guide nozzle 9 above the middle cavity of the spray block 8 more evenly dispersed, improving the extinguishing effect of the water mist on the thermal runaway battery. Because the spray block 8 is equipped with a sealing plate 10 on its side, the sealing plate 10 can block the channel required for the spray block 8 to move on the pre-embedded box 1, thus preventing water from entering the interior of the pre-embedded box 1 through the channel. Meanwhile, when the battery experiences thermal runaway, the negative pressure fan 18 is activated. After the negative pressure fan 18 is activated, it can draw in the flue gas inside the positioning cover 4 and the movable cover 5 through the fixed pipe 17 and the suction pipe 16. The drawn flue gas is then purified by the purification component 19 and discharged to the outside.

[0030] Example 2: The technical content disclosed in this example is a further improvement on the basis of Example 1 above. The following technical content is disclosed in this example: the obstruction plate 25 is in contact with the adjusting gear 21 in the initial state. When the car battery thermally runs away, the second cylinder 24 controls the obstruction plate 25 to descend and disengage from the adjusting gear 21. The stiffness coefficient of the second spring 23 is greater than that of the first spring 803.

[0031] When thermal runaway occurs during battery charging, the second cylinder 24 controls the obstruction plate 25 to move downwards, causing the obstruction plate 25 to disengage from the adjusting gear frame 21. When the spray block 8 reciprocates along the limiting rod 13, the movement of the spray block 8 drives the pressure rod 802 to move synchronously. After the arc surface of the pressure rod 802 moves and contacts the arc surface of the adjusting gear frame 21, because the stiffness coefficient of the second spring 23 is greater than that of the first spring 803, the adjusting gear frame 21 first compresses the pressure rod 802, thereby pushing the pressure rod 802 and the piston plate 801 to move inside the spray block 8. When the pressure rod 802 reaches its limit, as the pressure rod 802 continues to move with the spray block 8, the pressure rod 802 will compress the adjusting gear frame 21. At this time, the adjustment gear 21 moves so that the meshing transmission gear 20 drives the suction pipe 16 to rotate. When the spray block 8 drives the pressure rod 802 to move and disengage from the adjustment gear 21, the adjustment gear 21 resets under the action of the second spring 23. Thus, the reciprocating movement of the adjustment gear 21 can drive the transmission gear 20 to reciprocate and rotate the suction pipe 16. Through the reciprocating rotation of the suction pipe 16, the absorption range of the flue gas inside the positioning cover 4 and the movable cover 5 can be improved.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent charging protection device for new energy vehicles, comprising a pre-embedded box (1) embedded in the ground (2), wherein a charging pile (3) is provided on the side of the pre-embedded box (1), characterized in that: A positioning cover (4) is installed at the upper center of the pre-embedded box (1). A smoke sensor is installed inside the positioning cover (4) to monitor the fire signal. Movable covers (5) are installed on the left and right sides of the positioning cover (4). Multiple support frames (6) are evenly distributed on the movable covers (5). The support frame (6) of the movable cover (5) near the positioning cover (4) is fixedly connected to the positioning cover (4). The support frame (6) of the support frame (6) away from the positioning cover (4) is connected to the movable wheel ( 7) They are interconnected, and the central shaft of the movable wheel (7) is connected to the motor output shaft. The central part of the pre-embedded box (1) is equipped with a spray block (8), and the upper end of the spray block (8) is provided with a guide nozzle (9). The lower end of the spray block (8) is connected to the transmission component. The transmission component is used to control the spray block (8) to move back and forth on the bottom of the car. The central part of the spray block (8) is connected to the water storage device through the water supply hose (14) and the pump. The end of the water supply hose (14) near the spray block (8) is equipped with a solenoid valve (15).

2. The intelligent charging protection device for new energy vehicles according to claim 1, characterized in that: A piston plate (801) is installed inside the spray block (8), and a pressure rod (802) is fixed to one end of the piston plate (801) facing the outside of the spray block (8). The piston plate (801) is connected to the spray block (8) through a first spring (803), and a blocking frame (804) is installed in the middle of the spray block (8). The lower middle part of the blocking frame (804) is connected to the telescopic end of the first cylinder (805), and the first cylinder (805) is installed in the lower middle part of the spray block (8).

3. The intelligent charging protection device for new energy vehicles according to claim 2, characterized in that: The piston plate (801) is circumferentially wrapped with a sealing ring, and the piston plate (801) can slide inside the spray block (8). Multiple guide nozzles (9) are evenly distributed above the spray block (8). Sealing plates (10) are fixed on the left and right sides of the spray block (8), and the upper surface of the sealing plate (10) is in contact with the inner wall of the pre-embedded box (1).

4. The intelligent charging protection device for new energy vehicles according to claim 3, characterized in that: The longitudinal section of the blocking frame (804) is set as a "U" shaped structure, and the blocking frame (804) can slide on the spray block (8), and the side wall of the blocking frame (804) is also fixed with a sealing ring.

5. The intelligent charging protection device for new energy vehicles according to claim 1, characterized in that: The transmission component includes a reciprocating screw (11) and a limiting rod (13) that are installed through the bottom of the spray block (8). The reciprocating screw (11) is fixed on the output end of the servo motor (12), and the spray block (8) can slide on the limiting rod (13).

6. The intelligent charging protection device for new energy vehicles according to claim 2, characterized in that: The positioning cover (4) has suction pipes (16) installed on both sides of the middle part, and the upper end of the suction pipe (16) is connected to the fixed pipe (17). The upper end of the fixed pipe (17) is connected to the negative pressure fan (18), and a purification component (19) is installed between the fixed pipe (17) and the negative pressure fan (18).

7. The intelligent charging protection device for new energy vehicles according to claim 6, characterized in that: The upper end of the suction pipe (16) can rotate on the fixed pipe (17), and the fixed pipe (17) and the suction pipe (16) are connected to each other. The lower end of the suction pipe (16) is fixed with a transmission gear (20), and the outer side of the transmission gear (20) is meshed with an adjusting gear frame (21). The side of the adjusting gear frame (21) is connected to the pre-embedded box (1) through a telescopic rod (22), and a second spring (23) is sleeved on the outer side of the telescopic rod (22). The interior of the pre-embedded box (1) is fixed with a second cylinder (24), and the telescopic end of the second cylinder (24) is fixed with a baffle plate (25).

8. The intelligent charging protection device for new energy vehicles according to claim 7, characterized in that: The outer surface contours of the adjacent ends of the adjusting gear (21) and the pressure rod (802) are both set to be arc-shaped, and the stiffness coefficient of the second spring (23) is greater than that of the first spring (803).

9. The intelligent charging protection device for new energy vehicles according to claim 8, characterized in that: The obstruction plate (25) is in contact with the adjusting gear (21) in the initial state. When the car battery thermally runs away, the second cylinder (24) controls the obstruction plate (25) to descend and disengage from the adjusting gear (21).

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