Fireproof alarm device for new energy charging pile

Abstract

The invention relates to a fireproof alarm device for a new energy charging pile, and the device comprises a housing assembly, the housing assembly comprises a bottom box, a second matching groove, a fixed plate and a circuit board, the bottom box is a box body with an opening in the upper side, the top end of the bottom box is provided with the second matching groove, the bottom of the inner cavity of the bottom box is provided with the fixed plate, and the circuit board is arranged above the fixed plate. The temperature sensor partially extends out of the charging pile shell and is arranged downwards, dust accumulation and external interference are avoided, and it is ensured that the environment temperature is accurately detected; the independent power supply assembly comprises batteries in two power supply sleeves, the batteries are connected in parallel to supply power, the batteries are backed up for each other, and it is ensured that the system can still operate normally when any power supply unit breaks down.

Description

Technical Field

[0001] This invention belongs to the field of fire alarms, specifically a fire alarm device for new energy charging piles. Background Technology

[0002] With the widespread application of new energy vehicles, charging piles, as critical infrastructure, are widely deployed in public and private locations. However, charging piles may cause fires during operation due to electrical faults, overheating, or external ignition sources, posing significant safety risks. Traditional fire alarm devices suffer from the risk of short-circuit combustion of batteries, are prone to rapid efficiency degradation or even failure in high-temperature or fire environments, and have insufficient accuracy of individual sensors. These shortcomings make it difficult for existing devices to meet the high reliability, rapid response, and continuous operation requirements of new energy charging piles. Therefore, a fire alarm device for new energy charging piles is proposed. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: the batteries of traditional fire alarm devices are at risk of short circuit and combustion, their efficiency is prone to rapid decline or even failure in high temperature or fire environments, the accuracy of individual sensors is insufficient, and they cannot effectively manage the internal pressure problems caused by high temperature vaporization media.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fire alarm device for new energy charging piles, comprising: The outer casing assembly includes a bottom box, a second mating groove, a fixing plate, and a circuit board. The bottom box is a box with an opening on the top side. The top of the bottom box has a second mating groove. The bottom of the inner cavity of the bottom box is provided with a fixing plate, and the circuit board is provided above the fixing plate. The enclosure component is located above the bottom box; The detection assembly includes an inner box, a smoke sensor, and a temperature sensor. The inner box is located on one side of the inner cavity of the bottom box. The smoke sensor and the temperature sensor are located inside the inner box. A portion of the temperature sensor extends through the inner box and the shell of the bottom box. The housing provides robust structural support, and the slot 2 facilitates a sealed connection. The fixing plate and circuit board ensure stable installation of internal components. The enclosed components protect internal components from external interference. The detection components isolate the sensors through the inner box, and the temperature sensor's protruding design facilitates accurate monitoring of external ambient temperature and smoke, improving the accuracy of fire detection.

[0006] As a preferred technical solution for a fire alarm device for new energy charging piles, the enclosure component includes a cover plate and a sealing strip. The bottom of the cover plate is provided with a sealing strip. The cover plate matches the upper side of the bottom box, and the sealing strip is movably inserted into the mating groove. The cover plate and the bottom box are matched with the sealing strip and the movable insertion of the matching groove 2 to ensure the airtightness of the device and prevent dust and moisture from entering, while also facilitating disassembly and maintenance.

[0007] As a preferred technical solution for a fire alarm device for new energy charging piles, the enclosed component also includes ventilation holes. Several ventilation holes are provided on the side wall of the top of the cover plate, and the cavity inside the cover plate is connected to the ventilation holes. The vented design ensures airtightness while allowing air circulation, promoting the exchange of internal air with the external environment, which is beneficial for the sensor to detect smoke and temperature, and improves detection sensitivity.

[0008] As a preferred technical solution for a fire alarm device for new energy charging piles, the detection component also includes a fixing frame, on which an S-shaped partition is installed, and two smoke sensors are installed on the S-shaped partition. The two ends of the S-shaped partition are tightly fitted to the inner wall of the inner box cavity, and one end of the fixing frame is connected to the inner wall of the inner box cavity by fixing bolts. S-shaped baffles restrict airflow and guide airflow, making installation and maintenance easier.

[0009] As a preferred technical solution for a fire alarm device for new energy charging piles, the detection component also includes an independent power supply component. The independent power supply component includes a vent cylinder, a power sleeve, and a sealing cover. The inner cavity of the inner box is provided with two power sleeves, and the power sleeves are provided with sealing covers. A battery is provided inside the power sleeves. The independent power supply component isolates the battery through a dual power sleeve and a sealed cover to prevent fires caused by electrical faults; the second vent promotes air circulation, reduces battery operating temperature, and improves power supply safety and stability.

[0010] As a preferred technical solution for a fire alarm device for new energy charging piles, the detection component also includes a heat absorption chamber and a supporting frustum. The edge of the power sleeve is provided with a heat absorption chamber, and several supporting frustums are provided at the bottom of the heat absorption chamber. The upper and lower sides of the bottom part of the heat absorption chamber are connected by the supporting frustums, and the heat absorption chamber contains a medium liquid. The heat absorption chamber absorbs the heat generated by the battery through a medium liquid, supports the frustum to enhance structural stability, reduces battery temperature, extends power supply time in fire environments, and improves the reliability of the device operation.

[0011] As a preferred technical solution for a fire alarm device for new energy charging piles, the detection component also includes a sliding component, which includes an annular piston, a spring, a pneumatic extrusion groove, a sealing block, and an exhaust hole. The top of the annular piston has several exhaust holes, and the inner circumferential surface of the annular piston has several mating grooves. The sealing block is movably inserted into each mating groove. The upper side of the mating groove is connected to the bottom end of the exhaust hole. The bottom end of the annular piston has a pneumatic extrusion groove that penetrates the bottom of the mating groove. The top end of the spring is fixedly connected to the inner top wall of the heat absorption chamber, and the bottom end of the spring is connected to the upper side of the annular piston. The inner top wall of the heat absorption chamber has an exhaust groove, and the outer side of the annular piston is slidably connected to the inner wall of the heat absorption chamber. The sliding component achieves automatic air pressure regulation through structures such as an annular piston, spring, and air pressure squeezing groove. When the liquid medium in the heat absorption chamber vaporizes and generates high pressure, the gas is released through the exhaust port and the gas outlet groove to protect the battery and device structure and enhance safety in high-temperature environments.

[0012] When the medium liquid is heated and vaporized, the gas pressure in the heat absorption chamber increases, and the high-pressure gas enters the gas pressure extrusion groove, pushing the annular piston upward. The sealing block moves with the annular piston to the limit groove, compressing the second spring. The exhaust port is connected to the gas pressure extrusion groove, and the high-pressure gas is discharged through the exhaust groove.

[0013] As a preferred technical solution for a fire alarm device for new energy charging piles, the detection component also includes a second spring, a limiting groove and a slider. A limiting groove is opened at the top of the heat absorption chamber, and a slider is movably connected in the limiting groove. The top of the slider is connected to the inner top wall of the limiting groove by the second spring. The spring and slider work together with the limiting groove to further optimize the air pressure regulation mechanism, ensure the smooth discharge of high-pressure gas, and enhance the structural stability of the heat absorption chamber and the safety of the device.

[0014] As a preferred technical solution for fire alarm devices for new energy charging piles, a communication groove is provided on one side of the bottom box, and a connecting cylinder and a ventilator are provided on the inner box. The connecting cylinder and the ventilator extend into the communication groove, and a filter is provided inside the ventilator. The combination of the communication channel and the venting tube with the filter design promotes air circulation while filtering dust and particulate matter, protecting the sensor from external interference, and improving detection accuracy and device durability.

[0015] As a preferred technical solution for a fire alarm device for new energy charging piles, a second ventilation cylinder is provided on the side of the inner box facing the middle of the bottom box cavity, and a fan is provided in the inner cavity of the inner box. The fan is connected to the inner wall of the inner box through a connecting bracket. The temperature sensor includes a thermocouple, and a battery equalization chip, model LTC1871, is installed on the circuit board to accommodate two batteries connected in parallel.

[0016] The ventilation duct and fan enhance air circulation within the inner casing, optimize the sensor detection environment, reduce smoke and dust interference, and improve the sensitivity and accuracy of fire detection.

[0017] Sensor backup: The processor ensures data reliability by comparing two sets of sensor data and using a consistency check algorithm (such as averaging or prioritizing data with smaller deviations).

[0018] The beneficial effects of the fire alarm device for new energy charging piles of the present invention are as follows: the temperature sensor extends out of the charging pile shell to ensure accurate detection of ambient temperature; stable power supply guarantee: the independent power supply component contains batteries in two power sleeves, which are powered by parallel batteries and serve as backups for each other, ensuring that the system can still operate normally when any power supply unit fails. Efficient heat and pressure management: The heat absorption chamber contains a liquid medium that absorbs the heat generated by the battery and circuit board during operation, maintaining normal operating temperature and extending operating time in fire environments; The annular piston, spring 1, and sealing block work in conjunction with the gas pressure squeezing groove, exhaust port, and gas outlet groove. When the medium liquid vaporizes at high temperature, causing the gas pressure in the heat absorption chamber to be too high, the high-pressure gas is released through the exhaust mechanism to reduce the internal pressure and protect the structure and function of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the bottom box described in this invention; Figure 3 This is a schematic diagram of the detection component described in this invention; Figure 4 This is a schematic diagram of the internal structure of the power supply sleeve described in this invention; Figure 5 This is a three-dimensional structural diagram of the annular piston described in this invention; Figure 6 For the present invention Figure 3 A magnified schematic diagram of part A in the middle section; Figure 7 For the present invention Figure 3 A partially enlarged structural diagram of section B; Figure 8 For the present invention Figure 4 A magnified schematic diagram of part C in the middle.

[0020] Reference numerals: 100, Outer shell assembly; 101, Base box; 102, Mating groove two; 103, Communication groove; 105, Fixing plate; 106, Circuit board; 200, Sealing assembly; 201, Cover plate; 202, Sealing strip; 203, Vent hole; 300, Detection assembly; 301, Inner box; 302, Connecting cylinder; 303, Vent cylinder one; 304, Vent cylinder two; 305, Power supply sleeve; 306, Sealing cover; 307, Connecting bracket; 308, Heat absorption chamber; 30 9. Supporting frustum; 310. Annular piston; 311. Spring 1; 312. Battery; 313. Mating groove 1; 315. Spring 2; 316. Fan casing; 317. Fan blades; 318. Limiting groove; 319. Slider; 320. Air pressure extrusion groove; 321. Sealing block; 322. Exhaust port; 323. Smoke sensor; 324. Temperature sensor; 325. Fixing bracket; 326. Alarm; 327. Filter screen; 328. Air outlet groove; 329. Motor. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0025] like Figures 1-8 As shown, this invention proposes a fire alarm device for new energy charging piles, comprising: The outer casing assembly 100 includes a bottom box 101, a second mating groove 102, a fixing plate 105, and a circuit board 106. The bottom box 101 is a box with an opening on the top side. The second mating groove 102 is provided at the top of the bottom box 101. The fixing plate 105 is provided at the bottom of the inner cavity of the bottom box 101, and the circuit board 106 is provided above the fixing plate 105. Enclosure component 200 is located above the bottom box 101; The detection component 300 includes an inner box 301, a smoke sensor 323, and a temperature sensor 324. The inner box 301 is disposed on one side of the inner cavity of the bottom box 101. The smoke sensor 323 and the temperature sensor 324 are disposed on the inner side of the inner box 301. A portion of the temperature sensor 324 extends through the inner box 301 and the shell of the bottom box 101. The housing assembly 100 provides a stable structural support, and the slot 102 facilitates a sealed connection. The fixing plate 105 and the circuit board 106 ensure the stable installation of the internal components. The enclosure protects the internal components from external interference. The detection assembly isolates the smoke sensor 323 and the temperature sensor 324 through the inner box 301. The protruding design of the temperature sensor 324 facilitates accurate monitoring of the external ambient temperature and smoke, improving the accuracy of fire detection.

[0026] The sealing assembly 200 includes a cover plate 201 and a sealing strip 202. The bottom of the cover plate 201 is provided with the sealing strip 202. The cover plate 201 matches the upper side of the bottom box 101. The sealing strip 202 is movably inserted into the mating groove 102. The cover plate 201 and the bottom box 101 are matched with the sealing strip 202 and the mating groove 102 through a movable plug-in design to ensure the sealing of the device's interior, prevent dust and moisture from entering, and facilitate disassembly and maintenance.

[0027] The sealing component 200 also includes vent holes 203. Several vent holes 203 are provided on the side wall of the top of the cover plate 201. The cavity inside the cover plate 201 is connected to the vent holes 203. The lower end of the cavity of the cover plate 201 is provided with an opening and is connected to the inner cavity of the bottom box 101.

[0028] The vent design ensures airtightness while allowing air circulation, promoting the exchange of internal air with the external environment, which is beneficial for the sensor to detect smoke and temperature, and improves detection sensitivity.

[0029] The detection assembly 300 also includes a fixing frame 325, on which an S-shaped partition is provided. Two smoke sensors 323 are provided on the S-shaped partition. The two ends of the S-shaped partition are tightly fitted to the inner wall of the inner cavity of the inner box 301. One end of the fixing frame 325 is connected to the inner wall of the inner cavity of the inner box 301 by a fixing bolt. S-shaped baffles restrict airflow and guide airflow, making installation and maintenance easier.

[0030] The detection component 300 also includes an independent power supply component, which includes a second vent 304, a power sleeve 305, and a sealing cover 306. The inner cavity of the inner box 301 is provided with two power sleeves 305, and the power sleeves 305 are provided with sealing covers 306. A battery 312 is provided inside the power sleeves 305. The inner cavity of the inner box 301 is provided with a partition to separate the cavity where the power sleeves 305 are located from the temperature sensor 324, the fixing bracket 325, and the alarm 326. The cavity where the power sleeves 305 are located is provided with an exhaust pipe that extends out of the bottom box 101 for exhaust and pressure relief. The independent power supply component isolates the battery 312 through the power sleeve 305 and the sealing cover 306 to prevent fire caused by electrical faults; the second vent 304 promotes air circulation, reduces the operating temperature of the detection component 300, and improves the safety and stability of the power supply process; the power sleeve 305 and the sealing cover 306 are threaded together.

[0031] The detection assembly 300 also includes a heat absorption chamber 308 and a support frustum 309. The edge of the power sleeve 305 is provided with a heat absorption chamber 308. Several support frustums 309 are provided at the bottom of the heat absorption chamber 308. The upper and lower sides of the bottom part of the heat absorption chamber 308 are connected by the support frustums 309. The heat absorption chamber 308 contains a medium liquid. The heat absorption chamber 308 absorbs the heat generated by the battery through the medium liquid, supports the frustum 309 to enhance structural stability, reduces the temperature of the battery 312, extends the power supply time in a fire environment, and improves the reliability of the device operation.

[0032] The detection assembly 300 also includes a sliding component, which includes an annular piston 310, a spring 311, a pneumatic compression groove 320, a sealing block 321, and an exhaust port 322. The top of the annular piston 310 is provided with several exhaust ports 322, and the inner circumferential surface of the annular piston 310 is provided with several mating grooves 313. The sealing block 321 is movably inserted into the mating grooves 313. The upper side of the mating grooves 313 is connected to the bottom end of the exhaust ports 322. The bottom end of the annular piston 310 is provided with a pneumatic compression groove 320, which penetrates the bottom of the mating grooves 313. The top end of the spring 311 is fixedly connected to the inner top wall of the heat absorption chamber 308, and the bottom end of the spring 311 is connected to the upper side of the annular piston 310. The inner top wall of the heat absorption chamber 308 is provided with an exhaust groove 328, and the outer side of the annular piston 310 is slidably connected to the inner wall of the heat absorption chamber 308. The exhaust groove 328 is connected to an exhaust pipe. The bottom end of spring 311 pulls the upper side of the annular piston 310, thus limiting the position of the annular piston 310.

[0033] The sliding component achieves automatic air pressure regulation through structures such as an annular piston, spring 1, and air pressure squeezing groove. When the medium liquid in the heat absorption chamber 308 vaporizes and generates high pressure, the gas is released through the exhaust port and the gas outlet groove to protect the battery and device structure and enhance safety in high-temperature environments.

[0034] The detection assembly 300 also includes a second spring 315, a limiting groove 318, and a slider 319. A limiting groove 318 is provided at the top of the heat absorption cavity 308. A slider 319 is movably connected in the limiting groove 318. The top of the slider 319 is connected to the inner top wall of the limiting groove 318 by the second spring 315. The upper side of the sealing block 321 and the lower side of the slider 319 are vertical surfaces. Spring 315 and slider 319 work together with limiting groove 318 to further optimize the air pressure regulation mechanism, ensure smooth discharge of high-pressure gas, and enhance the structural stability of heat absorption chamber 308 and the safety of the device.

[0035] A communication groove 103 is provided on one side of the bottom box 101. A connecting tube 302 and a vent tube 303 are provided on the inner box 301. The connecting tube 302 and the vent tube 303 extend into the communication groove 103. A filter screen 327 is provided inside the vent tube 303. The communication channel 103 and the vent 303, combined with the filter 327, promote air circulation while filtering dust and particulate matter, protecting the sensor from external interference, improving detection accuracy and device durability. The filter 327 has a pore size that can block general dust, but cannot block fine smoke particles.

[0036] A second ventilation cylinder 304 is provided on the side of the inner box 301 facing the middle of the inner cavity of the bottom box 101. A fan is provided in the inner cavity of the inner box 301, and the fan is connected to the inner wall of the inner box 301 through a connecting bracket 307. The ventilation duct and fan enhance air circulation within the inner casing, optimize the sensor detection environment, reduce dust interference, and improve the sensitivity and accuracy of fire detection.

[0037] The annular piston 310 is pre-positioned in the heat absorption chamber 308 by spring 311, the sealing block 321 is initially embedded in the mating groove 313, and the slider 319 is limited in the limiting groove 318 by spring 315. The medium liquid is a high-boiling-point, low-volatility coolant to ensure stable heat absorption and moderate vaporization at high temperatures. The medium liquid includes water.

[0038] A communication module is provided on the circuit board 106. The fan includes a fan casing 316, a motor 329 and a fan blade 317. The motor 329 is connected to the inside of the fan casing 316 through a bracket. The power output end of the motor 329 is fixedly connected to the fan blade 317.

[0039] Motor 329 controls the fan blades 317 to rotate, generating airflow; the airflow enters from ventilator 1 303 and exits from ventilator 2 304. During this process, smoke sensor 323 can detect and collect the smoke content of the outside air to determine whether a fire has occurred.

[0040] The battery 312 inside the power sleeve 305 supplies power to the circuit board 106, the fan casing 316, the smoke sensor 323, and the temperature sensor 324.

[0041] The inner top wall of the mating groove 313 is an inclined surface, and the upper side of the limiting groove 318 is also an inclined surface. The inclined surface of the mating groove 313 and the inclined surface of the limiting groove 318 slide together. The circuit board 106 is equipped with a processor, which is electrically connected to the temperature sensor 324, the alarm 326, and the smoke sensor 323. The temperature sensor 324 and the smoke sensor 323 detect the temperature and smoke conditions to determine whether a fire has occurred. When a fire occurs, the alarm 326 sounds an alarm and the fire monitoring system sends fire information to the fire alarm via the communication module.

[0042] The batteries 312 are connected in parallel to provide backup for each other. There are also two smoke sensors 323 and two temperature sensors 324, which improves the accuracy of information acquisition and increases the fault tolerance.

[0043] Processor: A microprocessor is integrated on the circuit board 106 as the control core, responsible for data processing, logic judgment and signal output. The microprocessor includes MCU or DSP.

[0044] Temperature sensor 324: Employs a high-precision temperature sensor that connects to the processor via an analog or digital interface to acquire ambient temperature data in real time. The temperature sensor may include a thermocouple or an NTC thermistor.

[0045] Smoke sensor 323: Uses a photoelectric or ionization smoke sensor, connected to a processor via a digital interface or analog signal output, to detect the concentration of smoke in the air.

[0046] Alarm 326: Includes a buzzer or speaker, driven by a processor-controlled GPIO pin or PWM signal, for emitting a fire alarm sound.

[0047] Communication module: Integrated on circuit board 106, it can use Wi-Fi, 4G / 5G module or LoRa communication, and connect to the processor through serial port or SPI interface to send fire information to remote locations.

[0048] Hardware connection method: The temperature sensor 324 and the smoke sensor 323 are connected to the processor's input port through dedicated pins. The analog signals output by the sensors are converted by ADC or directly input to the processor as digital signals.

[0049] The alarm 326 is controlled by the processor's GPIO output port, triggering a high-level or PWM signal to drive the alarm to sound.

[0050] The communication module interacts with the processor via serial communication or SPI / I2C interface. The processor encapsulates the fire information into data packets and sends them through the communication module.

[0051] Two smoke sensors and two temperature sensors operate in parallel, serving as backups for each other to ensure data reliability. The processor compares the data from the two sets of sensors; if the data deviation is large, the more reliable sensor data is used first. The processor model is STM32F103C8T6.

[0052] Battery 312 transmits power to the PMU on circuit board 106 via the main power supply bus. The PMU provides a stable 3.3V or 5V power supply to the processor and communication module.

[0053] The processor communicates with the PMU via the I2C / SPI interface to dynamically adjust power distribution and optimize energy consumption.

[0054] Smoke sensor 323 and temperature sensor 324: The sensors are powered by the power distribution circuit of circuit board 106, with low power consumption and a 3.3V power supply.

[0055] Each sensor is connected to the circuit board via an independent terminal block, with power lines separated from signal lines, and shielded cables are used to reduce electromagnetic interference.

[0056] Alarm 326: The alarm is powered through the power output of circuit board 106, and the PMU provides a higher current to support a high-decibel buzzer.

[0057] The processor controls the alarm switch via GPIO or PWM signals to ensure a rapid response in the event of a fire.

[0058] Fan: The fan is powered through the power output terminal of circuit board 106, and the PMU provides 1 to 2A of current to support the operation of the fan. An S-shaped partition separates the inner cavity of inner box 301.

[0059] The processor controls the fan to start and stop via MOSFETs or relays, promoting air circulation and optimizing energy consumption.

[0060] The specific implementation method is as follows: The outer casing assembly 100 is fixed inside the charging pile, with the temperature sensor 324 located outside the charging pile and facing downwards. The power sleeve 305 traps the battery 312 inside the power sleeve 305 to prevent the battery 312 from malfunctioning and catching fire. The medium liquid in the heat absorption chamber 308 has a specific heat capacity of over 2450 J / (kg*K) and can absorb heat, which can reduce the temperature of the battery 312, keeping it in normal operation, and also extend the normal operation time of the battery 312 in a fire. When the medium liquid absorbs too much heat, it vaporizes in large quantities, causing the air pressure in the heat absorption chamber 308 to be too high. The high-pressure gas enters the air pressure extrusion groove 320 and extrudes the annular piston 310. As the air pressure extrusion annular piston 310 moves upward, when the sealing block 321 corresponds to the limiting groove 318, the air extrudes the sealing block 321 and enters along the axis of the mating groove 313. When the sealing block 321 enters the limiting groove 318, it abuts against the slider 319 and compresses the spring 315. As the sealing block 321 continues to enter the limiting groove 318, the bottom end of the exhaust hole 322 is separated from the sealing block 321, the sealing block 321 releases the exhaust hole 322, the air pressure squeezing groove 320 is connected to the exhaust hole 322, and the air is discharged into the top of the heat absorption chamber 308 through the air pressure squeezing groove 320, the sealing block 321 and the exhaust hole 322, and then discharged from the air outlet groove 328, thereby releasing the gas and reducing the air pressure.

[0061] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fire alarm device for new energy charging piles, characterized in that: include: The outer casing assembly (100) includes a bottom box (101), a mating groove 2 (102), a fixing plate (105), and a circuit board (106). The bottom box (101) is a box with an opening on the top side. The bottom of the bottom box (101) is provided with a mating groove 2 (102). The bottom of the inner cavity of the bottom box (101) is provided with a fixing plate (105). The circuit board (106) is provided above the fixing plate (105). The enclosure component (200) is located above the base box (101); The detection assembly (300) includes an inner box (301), a smoke sensor (323) and a temperature sensor (324). The inner box (301) is located on one side of the inner cavity of the bottom box (101). The smoke sensor (323) and the temperature sensor (324) are provided on the inner side of the inner box (301). A portion of the temperature sensor (324) extends through the inner box (301) and the housing of the bottom box (101).

2. The fire alarm device for a new energy charging pile according to claim 1, characterized in that: The enclosure assembly (200) includes a cover plate (201) and a sealing strip (202). The bottom of the cover plate (201) is provided with the sealing strip (202). The cover plate (201) matches the upper side of the bottom box (101). The sealing strip (202) is movably inserted into the mating groove (102).

3. A fire alarm device for a new energy charging pile according to claim 2, characterized in that: The sealing assembly (200) also includes vent holes (203), and several vent holes (203) are provided on the side wall of the top of the cover plate (201). The chamber inside the cover plate (201) is connected to the vent holes (203).

4. A fire alarm device for a new energy charging pile according to claim 1, characterized in that: The detection assembly (300) also includes a mounting bracket (325), on which an S-shaped partition is provided. Two smoke sensors (323) are provided on the S-shaped partition. The two ends of the S-shaped partition are tightly fitted to the inner wall of the inner cavity of the inner box (301). One end of the mounting bracket (325) is connected to the inner wall of the inner cavity of the inner box (301) by a fixing bolt.

5. A fire alarm device for a new energy charging pile according to claim 1, characterized in that: The detection component (300) also includes an independent power supply component, which includes a second vent (304), a power sleeve (305) and a sealing cover (306). The inner cavity of the inner box (301) is provided with two power sleeves (305), and a battery (312) is provided inside the power sleeve (305). The power sleeve (305) is provided with a sealing cover (306).

6. A fire alarm device for a new energy charging pile according to claim 1, characterized in that: The detection assembly (300) also includes a heat absorption chamber (308) and a supporting frustum (309). The edge of the power sleeve (305) is provided with a heat absorption chamber (308). Several supporting frustums (309) are provided at the bottom of the heat absorption chamber (308). The upper and lower sides of the bottom part of the heat absorption chamber (308) are connected by the supporting frustums (309). The heat absorption chamber (308) contains a medium liquid.

7. A fire alarm device for a new energy charging pile according to claim 1, characterized in that: The detection assembly (300) also includes a sliding component, which includes an annular piston (310), a spring (311), a pneumatic compression groove (320), a sealing block (321), and an exhaust port (322). The top of the annular piston (310) has several exhaust ports (322), and the inner circumferential surface of the annular piston (310) has several mating grooves (313). The sealing block (321) is movably inserted into the mating groove (313), and the upper side of the mating groove (313) is connected to the exhaust port (322). The bottom end of the ring piston (310) is connected to the bottom end of the ring piston (313). The bottom end of the ring piston (310) is provided with a pneumatic extrusion groove (320). The pneumatic extrusion groove (320) passes through the bottom of the mating groove (313). The top end of the spring (311) is fixedly connected to the inner top wall of the heat absorption chamber (308). The bottom end of the spring (311) is connected to the upper side of the ring piston (310). The inner top wall of the heat absorption chamber (308) is provided with an air outlet groove (328). The outer side of the ring piston (310) is slidably connected to the inner wall of the heat absorption chamber (308).

8. A fire alarm device for a new energy charging pile according to claim 7, characterized in that: The detection assembly (300) also includes a second spring (315), a limiting groove (318), and a slider (319). A limiting groove (318) is opened at the top of the heat absorption cavity (308). A slider (319) is movably connected in the limiting groove (318). The top of the slider (319) is connected to the inner top wall of the limiting groove (318) through the second spring (315).

9. A fire alarm device for a new energy charging pile according to claim 1, characterized in that: A communication slot (103) is provided on one side of the bottom box (101). A connecting tube (302) and a ventilator (303) are provided on the inner box (301). The connecting tube (302) and the ventilator (303) extend into the communication slot (103). A filter screen (327) is provided inside the ventilator (303).

10. A fire alarm device for a new energy charging pile according to claim 1, characterized in that: A second ventilation cylinder (304) is provided on the side of the inner box (301) facing the middle of the inner cavity of the bottom box (101). A fan is provided in the inner cavity of the inner box (301), and the fan is connected to the inner wall of the inner box (301) through a connecting bracket (307).

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