An active protection device for an electric bicycle

Abstract

The utility model relates to the field of intelligent vision and fire control technology, concretely relates to an electric bicycle initiative protection device, including parking shed frame pole, monitoring alarm subassembly, temperature monitoring component, temperature control intervention component and dry powder fire extinguishing component, the present application is intervened to control temperature through monitoring temperature exceeding threshold value and continuously rising before the fire occurs, makes the fire curb before the occurrence, even if the spark sprout appears, can identify and give an early warning to extinguish the fire quickly, and the relevant data and the fire scene video are carried out cloud storage and remote notice property, have weak signal detection, high implementation speed, hierarchical response ability, fill up the technical blank of 'the pre-judgment - intervention in the process' link, realize the leap from 'the post-disaster loss' to 'the pre-disaster prevention and control', reduce the fire loss, convenient to install and maintain at the same time, also adapt to the complex environment of old community, and solve the problem that only after the battery temperature is greater than or equal to 200 DEG C, the fire has occurred to trigger and miss the key intervention period of thermal runaway.

Description

Technical Field

[0001] This utility model relates to the fields of intelligent vision and fire protection technology, and in particular to an active protection device for electric bicycles. Background Technology

[0002] Currently, traditional detectors that detect smoke / open flames only trigger alarms after the temperature exceeds 200°C or an open flame appears, thus missing the golden intervention period for lithium battery thermal runaway (60-80°C).

[0003] Existing smart parking sheds mostly use fixed sprinkler / suspended fire extinguishing ball devices, which rely on the location of parked vehicles, have a high risk of failure, and are difficult to cover complex fire situations.

[0004] Most of the devices currently installed on electric bicycles are the aforementioned "post-incident handling" devices, which are essentially loss control measures. Therefore, we propose a fire risk prediction, intervention, and early warning fire extinguishing device that can meet the full-cycle prevention and control needs of lithium battery fires, namely "early warning - precise temperature control - rapid fire extinguishing". Utility Model Content

[0005] The purpose of this utility model is to provide an active protection device for electric bicycles, which aims to solve the problem that it can only be triggered after the battery temperature reaches ≥200°C and a fire has already occurred, thus missing the critical intervention period for thermal runaway.

[0006] To achieve the above objectives, this utility model provides an active protection device for electric bicycles, including a parking shed frame pole, on which a monitoring and alarm component, a temperature monitoring component, a temperature control intervention component, and a dry powder fire extinguishing component are installed;

[0007] The monitoring and alarm component includes a monitoring and alarm camera and a cooperating component. The monitoring and alarm camera is installed on one side of the parking shed frame pole, and the cooperating component is installed on the monitoring and alarm camera.

[0008] The temperature monitoring component includes a sensor slide rail, a temperature sensor, and auxiliary components. The sensor slide rail is mounted on a crossbeam added to the top of the parking shed frame, the temperature sensor is mounted on one side of the sensor slide rail, and the auxiliary components are mounted on one side of the temperature sensor.

[0009] The temperature control intervention component includes a temperature control intervention slide rail, a solenoid valve, a nozzle, and a connecting component. The temperature control intervention slide rail is installed on a second crossbeam added to the rear side of the parking shed frame. The solenoid valve is installed on the transmission bearing component in the temperature control intervention slide rail. The outlet of the solenoid valve is connected to the nozzle and connected to the connecting component.

[0010] The dry powder fire extinguishing assembly includes a movable slide rail and a spraying component. The movable slide rail is longitudinally mounted on the first crossbeam on the rear side of the parking shed frame, and its length covers the entire parking area. The spraying component is mounted on the support of the movable slide rail.

[0011] The cooperating components include a lens, an ultraviolet phototube, an aluminum reflector, an antenna, an alarm light, and a connecting plate. The lens is located in the center of the spherical head of the monitoring and alarm camera. The ultraviolet phototube is located on one side of the lens. The aluminum reflector is located on the outside and above the lens. The connecting plate is placed behind the monitoring and alarm camera. The antenna and the alarm light are both located on the connecting plate.

[0012] The auxiliary components include a support plate, a servo motor, and a working component. The two support plates are fixed on the transmission support component in the sensor slide rail. The servo motor is connected to the winding shaft provided on the sensor slide rail. The working component is located on one side of the support plate.

[0013] The working components include a sensing line and a sensing probe. The sensing line is disposed between the two support plates, with one end connected to the output end of the servo motor. The sensing probe is disposed at the end of the sensing line.

[0014] The connecting components include a hose and a water pipe. One end of the hose is connected to the water inlet of the solenoid valve, and the other end is connected to the upper end of the water pipe. The lower end of the water pipe is connected to a cooling water storage tank.

[0015] The ejection component includes a particle ejector and a dry powder storage tank. The feed inlet at the top of the particle ejector is connected to the outlet of the dry powder storage tank and is mounted on a transmission support in the moving slide rail.

[0016] The sensor slide rail is fixed to a crossbeam added to the top of the parking shed frame, and its length covers the entire area to be monitored.

[0017] The monitoring and alarm camera features a 160° semi-circular aluminum reflector on its upper exterior, with the inner wall of the reflector featuring a textured design.

[0018] The nozzle adopts a swirling nozzle design and, in conjunction with a high-pressure pipeline, sprays cooling water at a temperature below 10°C in a directional manner, with the spray range covering the entire surface of the battery.

[0019] The sensing wire is wound and extended by rotating the winding shaft driven by the servo motor, thereby realizing the vertical lifting and lowering of the sensing probe.

[0020] This utility model discloses an active protection device for electric bicycles. It utilizes a combination of monitoring and alarm components, temperature monitoring components, temperature control and intervention components, and dry powder fire extinguishing components. Employing a multi-mode fusion fire early identification technology combining temperature monitoring, intelligent vision, and ultraviolet photon detection, it implements a closed-loop management system across the entire chain of "pre-event prediction, in-event intervention, and post-event traceability" for fire-prone scenarios such as electric bicycle sheds. This significantly improves reliability. The device boasts advantages such as extremely weak signal detection capabilities, second-level response speed, and hierarchical intelligent decision-making. Through a mini-program, it pushes fire data, on-site videos, and location information to property management in real time. The integrated parking shed frame eliminates the need for additional wiring, making it compatible with the narrow spaces of older residential areas. This represents a paradigm shift from "post-disaster insurance claims" to "pre-disaster risk elimination," thereby solving the problem of only triggering the system after the battery temperature reaches ≥200℃ and a fire has already occurred, thus missing the critical intervention period for thermal runaway. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the overall structure of the active protection device for electric bicycles according to this utility model.

[0023] Figure 2 This is a schematic diagram of the structure and assembly of the temperature monitoring component of this utility model.

[0024] Figure 3 This is a side view of the monitoring and alarm component of this utility model.

[0025] Figure 4 This is a schematic diagram of the back of the monitoring and alarm component of this utility model.

[0026] In the diagram: 1. Parking shed support pole; 21. Sensor slide rail; 22. Temperature sensor; 221. Sensor wire; 222. Sensor probe; 223. Servo motor; 224. Support plate; 3. Monitoring and alarm camera; 31. Aluminum reflector; 32. Ultraviolet phototube; 33. Lens; 34. Antenna; 35. Alarm light; 36. Connecting plate; 41. Moving slide rail; 42. Particle injector; 43. Dry powder storage tank; 51. Temperature control intervention slide rail; 52. Solenoid valve; 53. Nozzle; 6. Hose; 7. Water pipe. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0028] like Figures 1 to 4As shown, where Figure 1 This is a schematic diagram of the overall structure of the active protection device for electric bicycles. Figure 2 This is a schematic diagram of the structure and assembly of the temperature monitoring component. Figure 3 This is a side view of the monitoring and alarm component. Figure 4 This is a schematic diagram of the back of the monitoring and alarm component. This utility model provides an active protection device for electric bicycles: including a parking shed frame pole 1, a monitoring and alarm component, a temperature monitoring component, a temperature control intervention component, and a dry powder fire extinguishing component. The monitoring and alarm component includes a monitoring and alarm camera 3 and supporting components. The temperature monitoring component includes a sensor slide rail 21, a temperature sensor 22, and auxiliary components. The temperature control intervention component includes a temperature control intervention slide rail 51, a solenoid valve 52, a nozzle 53, and connecting components. The dry powder fire extinguishing component includes a moving slide rail 41 and a spraying component. The supporting components include a lens 33, an ultraviolet phototube 32, an aluminum reflector 31, an antenna 34, an alarm light 35, and a connecting plate 36. The auxiliary components include a support plate 224, a servo motor 225, and working parts. The working parts include a sensor wire 221 and a sensor probe 222. The connecting components include a hose 6 and a water pipe 7. The spraying component includes a particle injector 42 and a dry powder storage tank 43. The aforementioned solution can solve the problem that the critical intervention period for thermal runaway is missed because the battery temperature is ≥200℃ and a fire has already occurred. Understandably, the aforementioned solution can fill the technical gap in the "pre-prediction-intervention" process, realize the leap from "post-disaster loss mitigation" to "pre-disaster prevention", and reduce fire losses.

[0029] In this embodiment, the parking shed support pole 1 is used to support the working components of the parking shed and also to support the installation of the corresponding working parts of the device.

[0030] Preferably, the monitoring and alarm camera 3 is disposed on one side of the parking shed support pole 1, and the mating component is disposed on the monitoring and alarm camera 3; the monitoring and alarm assembly is located at the left rear and right rear top corners of the parking shed support pole 1, the lens 33 is located in the inner center of the head of the monitoring and alarm camera 3, and the ultraviolet phototube 32 is located in the inner upper part of the head of the monitoring and alarm camera 3. The lens 33 is a wide-angle lens, which, combined with the ultraviolet phototube 32, enables all-weather, multi-angle detection and identification of the 185nm-260nm characteristic ultraviolet spectrum generated by flames.

[0031] The sensor slide rail 21 is installed on the crossbeam added to the top of the parking shed frame pole 1, the temperature sensor 22 is installed on one side of the sensor slide rail 21, and the auxiliary component is installed on one side of the temperature sensor 22; the sensor slide rail 21 adopts an electric structure, which can drive the temperature sensor 22 to move.

[0032] The temperature control intervention slide rail 51 is mounted on the second crossbeam added to the rear side of the parking shed frame pole 1. The solenoid valve 52 is installed on the transmission support component of the temperature control intervention slide rail 51. The outlet of the solenoid valve 52 is connected to the nozzle 53 and connected to the connecting component. The solenoid valve 52 is mounted on the transmission support component of the temperature control intervention slide rail 51. Its outlet is connected to the nozzle 53 and its inlet is connected to one end of the hose 6. The nozzle 53 adopts a swirling nozzle design, which, in conjunction with the high-pressure pipeline, sprays cooling water below 10°C in a directional manner, and the spray range can cover the entire surface of the battery. The hose 6 is connected to the inlet of the solenoid valve 52 and one end of the water pipe 7. The other end of the water pipe 7 is connected to the cooling water storage tank, which has a built-in high-pressure drive unit. At the same time, the entire temperature control mechanism (including the solenoid valve 52, nozzle 53, and hose 6) is driven to move along the slide rail by the temperature control intervention slide rail 51, realizing the horizontal displacement of the temperature control mechanism.

[0033] The movable slide rail 41 is longitudinally mounted on the first crossbeam at the rear of the parking shed frame 1, and its length covers the entire parking area. The spraying component is mounted on the support of the movable slide rail 41. This structure facilitates the movement of the fire extinguishing assembly.

[0034] Preferably, the lens 33 is located in the center of the spherical head of the camera device of the monitoring alarm camera 3; the ultraviolet phototube 32 is located on one side of the lens 33; the aluminum reflector 31 is located on the outside and above the lens 33; the connecting plate 36 is placed behind the monitoring alarm camera 3, and the antenna 34 and the alarm light 35 are both located on the connecting plate 36. The above structure is used to realize the monitoring function.

[0035] Preferably, the two support plates 224 are fixed to the transmission support member in the sensor slide rail 21; the servo motor 225 is connected to the winding shaft provided on the sensor slide rail 21; the working component is located on one side of the support plate 224. The servo motor 225 can drive the winding shaft to rotate.

[0036] Preferably, the sensing line 221 is disposed between the two support plates 224, with one end connected to the output end of the servo motor 225; the sensing probe 222 is disposed at the end of the sensing line 221.

[0037] Preferably, one end of the hose 6 is connected to the water inlet of the solenoid valve 52, the other end is connected to the upper end of the water pipe 7, and the lower end of the water pipe 7 is connected to the cooling water storage tank.

[0038] Preferably, the feed inlet of the pellet injector 42 is connected to the outlet of the dry powder storage tank 43 and is mounted on the transmission support in the movable slide rail 41. The pellet injector 42 is mounted on the transmission support on the movable slide rail 41, and its feed inlet is connected to the outlet of the dry powder storage tank 43 via a pressure-resistant pipe. The equipped high-pressure drive unit utilizes the principle of fluid dynamics to accelerate and spray the special composite ABC dry powder extinguishing agent to achieve full-area coverage spraying. At the same time, the entire dry powder extinguishing mechanism (including the pellet injector 42 and the dry powder storage tank 43) is driven to move along the slide rail 41 to achieve horizontal displacement of the dry powder extinguishing mechanism.

[0039] Preferably, the sensor slide rail 21 is fixed to a crossbeam added to the top of the parking shed frame 1, and its length covers the entire area to be monitored. This structure facilitates full-range monitoring.

[0040] Preferably, the monitoring and alarm camera 3 has a 160° semi-circular aluminum reflector 31 on its upper exterior, and the inner wall of the aluminum reflector 31 has a textured design. The 160° semi-circular aluminum reflector 31 with its textured design on the upper exterior of the monitoring and alarm camera 3 reflects and focuses ultraviolet radiation to the ultraviolet phototube 32, improving signal reception efficiency.

[0041] Preferably, the nozzle 53 adopts a swirling nozzle design, which, in conjunction with the high-pressure pipeline, directionally sprays cooling water at a temperature below 10°C, and the spray range can cover the entire surface of the battery. This structure facilitates the realization of large-area water spraying.

[0042] Preferably, the sensing wire 221 is wound and unwound by the rotation of the winding shaft driven by the servo motor 225, thereby realizing the vertical lifting and lowering of the sensing probe 222. The winding shaft is mounted on the transmission support component in the sensor slide rail 21 by the support structures on both sides; the servo motor 225 is fixedly installed at one end of the winding shaft, and its output end is connected to the winding shaft to drive the winding shaft to rotate; one end of the sensing wire 221 is fixed and wound on the winding shaft, and the other end is connected to the sensing probe 222. By driving the rotation of the winding shaft driven by the servo motor 225, the sensing wire 221 can be wound and unwound, thereby realizing the vertical lifting and lowering of the sensing probe 222; at the same time, the entire winding mechanism (including the servo motor 225, winding shaft, sensing wire 221, support plate 224 and sensing probe 222) is driven to move along the slide rail by the sensor slide rail 21 to realize the horizontal displacement of the sensing probe 222.

[0043] When using the active protection device for electric bicycles according to this utility model, during operation, the ultraviolet radiation generated by the flame is focused by the aluminum reflector 31 and excites the ultraviolet phototube 32, generating a weak photocurrent. The signal processing circuit (including a preamplifier and a threshold comparator) amplifies the photocurrent and converts it into a digital signal. The threshold comparator determines whether it exceeds a preset risk threshold. If it exceeds the threshold, a trigger signal is output to the control main board. The lens 33 is connected to the YOLOv5 intelligent recognition module, which identifies the electric bicycle charging port and sparks based on the YOLOv5 model, and outputs the bounding box coordinates and confidence level. The target signal of the electric bicycle charging port drives the sensor slide rail 21 to move the sensor probe 222 directly above the vehicle charging area. The target situation of the sparks, combined with the output signal of the ultraviolet phototube 32, is determined to be a fire if ≥90%.

[0044] The antenna 34 and the alarm light 35 are connected to the monitoring and alarm camera 3 via the connecting plate 36. The antenna 34 is used to receive signals and transmit real-time images to the cloud. The YOLOv5 intelligent identification module and positioning module process and return coordinate information. When the temperature exceeds the limit signal is detected in the first stage or an electric spark is detected in the second stage, the alarm light 35 activates the buzzer and generates a multi-band alternating sound wave alarm. At the same time, it triggers the high-brightness LED array to release directional strong light warning, ensuring that personnel can evacuate before the cooling water spray or dry powder fire extinguishing is activated. When the electric vehicle is parked in the parking shed, the YOLOv5 model in the device outputs the vehicle's position coordinates and transmits the coordinate data to the main control unit in real time. The main control unit drives the sensor slide rail 21 to move the temperature monitoring component to directly above the vehicle charging area. Then, the servo motor 223 controls the lifting and lowering, accurately positioning the sensor probe 222 within 20mm of the battery surface to achieve close-range contact temperature monitoring. The motherboard system performs real-time inversion calculations on the internal temperature field of the battery. When the monitored temperature reaches 60°C, a high-frequency sampling mode is activated. If the temperature continues to rise to the 65°C threshold, a multi-level early warning mechanism is triggered, completing the function from temperature sensing to active intervention.

[0045] Based on the coordinates of the high-temperature target electric bicycle output by the YOLOv5 model within the device, the solenoid valve 52 is driven to move directly above the target. The slide rail extends across the entire parking area, and the entire temperature control mechanism (including the solenoid valve 52, nozzle 53, and hose 6) is moved along the slide rail via the temperature control intervention slide rail 51, achieving horizontal displacement of the temperature control mechanism. The solenoid valve 52 opens the passage by magnetically pulling the valve core, and the nozzle 53 releases cooling water below 10°C. It responds to the temperature threshold (65°C) trigger command to achieve automated control. The nozzle 53 adopts a swirling nozzle design, spraying cooling water directionally through a high-pressure pipeline to cover the entire surface of the battery, achieving physical cooling. The inlet end of the solenoid valve 52 is connected to the hose 6. The hose 6 has a pressure-resistant elastic structure and can extend and retract into a circular or straight shape as it moves along the slide rail, ensuring the freedom of movement of the solenoid valve 52. The upper end of the water pipe 7 is connected to the hose 6, and the lower end of the water pipe 7 is connected to the cooling water storage tank, forming a high-pressure delivery closed loop to ensure rapid supply of cooling water. The cooling water storage tank has a built-in pressurization system to ensure that the cooling water reaches the nozzle 53 after triggering. It can store a sufficient amount of cooling water to support multiple interventions and form complementary protection with the dry powder fire extinguishing components.

[0046] Based on the coordinates of the target electric bicycle from the YOLOv5 model output within the device, the particle injector 42 is driven to move directly above the target. The entire dry powder fire extinguishing mechanism (including the particle injector 42 and dry powder storage tank 43) is then moved along the sliding rail 41, achieving horizontal displacement of the dry powder fire extinguishing mechanism. The inlet of the particle injector 42 is connected to the outlet of the dry powder storage tank 43 via a pressure-resistant pipe. The dry powder storage tank 43 contains a built-in high-pressure drive unit and is filled with a special composite ABC dry powder fire extinguishing agent. The high-pressure drive unit utilizes fluid dynamics principles to accelerate and spray the special composite ABC dry powder fire extinguishing agent using fluid. If the temperature continues to rise and a spark signal is detected by the intelligent vision system, the control unit synchronously activates the particle injector 42, causing high-pressure gas to pass through the nozzle, generating a high-speed airflow. This airflow carries the special composite ABC dry powder fire extinguishing agent out of the swirling spray outlet and sprays it to cover the entire battery area, achieving a rapid fire extinguishing effect.

[0047] This application presents an integrated parking shed frame system that requires no additional wiring, making it compatible with the narrow spaces of older residential areas. It operates within a three-tiered "identification-temperature control-fire extinguishing" system, achieving dynamic positioning via a three-axis electric sliding rail system (sensor rail 21, moving rail 41, and temperature-controlled dry sliding rail 51). The monitoring and alarm components, consisting of the aluminum reflector 31, ultraviolet phototube 32, and YOLOv5 visual control, can capture the 185-260nm characteristic spectrum, enabling a dual verification mechanism. The device employs a height-adjustable sensor probe 222 for close-range monitoring at 20mm, predicting the risk of thermal runaway. When a critical temperature of 60℃ is detected, the temperature control intervention component sprays cooling water below 10℃ through nozzle 53; if the temperature continues to rise to 65℃ and a spark signal is detected, the dry powder fire extinguishing component can achieve full coverage within 3 seconds. Real-time monitoring of the parking shed's status, multi-terminal early warning push notifications, and fire-fighting facility linkage functions are supported via a WeChat mini-program. Compared with existing technologies, this utility model has the following innovations: It pioneers a sliding rail-type mobile fire extinguishing architecture, solving the problems of high cost and blind spots associated with multi-point fixed devices; it constructs a multimodal sensing network integrating contact temperature measurement, ultraviolet spectroscopy, and visual recognition; and it develops a graded response mechanism (early warning-temperature control-fire extinguishing), shifting the response point from post-disaster to pre-disaster. It features weak signal detection, high execution speed, and graded response capabilities, filling the technological gap in the "pre-event prediction-in-event intervention" stage, achieving a leap from "post-disaster loss mitigation" to "pre-disaster prevention," reducing fire losses, being compatible with the narrow spaces of older residential areas, and finally solving the problem of only triggering the intervention after the battery temperature reaches ≥200℃ and the fire has already occurred, thus missing the critical intervention period for thermal runaway.

[0048] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An active safety device for electric bicycles, comprising a parking shed frame pole, characterized in that: The parking shed frame is equipped with a monitoring and alarm component, a temperature monitoring component, a temperature control intervention component, and a dry powder fire extinguishing component. The monitoring and alarm component includes a monitoring and alarm camera and a cooperating component. The monitoring and alarm camera is installed on one side of the parking shed frame pole, and the cooperating component is installed on the monitoring and alarm camera. The temperature monitoring component includes a sensor slide rail, a temperature sensor, and auxiliary components. The sensor slide rail is mounted on a crossbeam added to the top of the parking shed frame, the temperature sensor is mounted on one side of the sensor slide rail, and the auxiliary components are mounted on one side of the temperature sensor. The temperature control intervention component includes a temperature control intervention slide rail, a solenoid valve, a nozzle, and a connecting component. The temperature control intervention slide rail is installed on a second crossbeam added to the rear side of the parking shed frame. The solenoid valve is installed on the transmission bearing component in the temperature control intervention slide rail. The outlet of the solenoid valve is connected to the nozzle and connected to the connecting component. The dry powder fire extinguishing assembly includes a movable slide rail and a spraying component. The movable slide rail is longitudinally mounted on the first crossbeam on the rear side of the parking shed frame, and its length covers the entire parking area. The spraying component is mounted on the support of the movable slide rail.

2. The active protection device for electric bicycles as described in claim 1, characterized in that: The mating components include a lens, an ultraviolet phototube, an aluminum reflector, an antenna, an alarm light, and a connecting plate. The lens is located in the center of the spherical head of the monitoring and alarm camera. The ultraviolet phototube is located on one side of the lens. The aluminum reflector is located on the outside and above the lens. The connecting plate is placed behind the monitoring and alarm camera, and the antenna and the alarm light are both located on the connecting plate.

3. The active protection device for electric bicycles as described in claim 1, characterized in that: The auxiliary components include support plates, servo motors, and working parts. The two support plates are fixed on the transmission support component in the sensor slide rail. The servo motor is connected to the winding shaft provided on the sensor slide rail. The working parts are located on one side of the support plates.

4. The active protection device for electric bicycles as described in claim 3, characterized in that: The working component includes a sensing line and a sensing probe. The sensing line is disposed between the two support plates, with one end connected to the output end of the servo motor. The sensing probe is disposed at the end of the sensing line.

5. The electric bicycle active guard device of claim 1, wherein : The connecting components include a hose and a water pipe. One end of the hose is connected to the water inlet of the solenoid valve, and the other end is connected to the upper end of the water pipe. The lower end of the water pipe is connected to a cooling water storage tank.

6. The active protection device for electric bicycles as described in claim 1, characterized in that: The ejection component includes a particle ejector and a dry powder storage tank. The feed inlet at the top of the particle ejector is connected to the outlet of the dry powder storage tank and is mounted on a transmission support in the moving slide rail.

7. The active protection device for electric bicycles as described in claim 1, characterized in that: The sensor slide rail is fixed to the crossbeam added to the top of the parking shed frame, and its length covers the entire area to be monitored.

8. The active protection device for electric bicycles as described in claim 1, characterized in that: The monitoring and alarm camera has a 160° semi-circular aluminum reflector on its upper exterior, and the inner wall of the aluminum reflector has a textured design.

9. The active protection device for electric bicycles as described in claim 1, characterized in that: The nozzle adopts a swirling nozzle design, which, together with the high-pressure pipeline, sprays cooling water at a temperature below 10°C in a directional manner, and the spray range can cover the entire surface of the battery.

10. The active protection device for electric bicycles as described in claim 4, characterized in that: The sensing cable is wound and extended by rotating the winding shaft driven by the servo motor, thereby enabling the vertical lifting and lowering of the sensing probe.

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