A new energy charging pile fireproof alarm device

Abstract

The application relates to a new energy charging pile fireproof alarm device, which comprises a shell assembly, the shell assembly comprises a bottom box, a matching groove two, a fixed plate and a circuit board, the bottom box is a box body with an upper side opening, a matching groove two is arranged at the top end of the bottom box, the fixed plate is arranged at the bottom of the inner cavity of the bottom box, and the circuit board is arranged above the fixed plate. A temperature sensor part is arranged to protrude out of the charging pile shell and downward, dust accumulation and external interference are avoided, accurate detection of the ambient temperature is ensured, stable power supply guarantee is provided, an independent power supply component comprises batteries in two power supply sleeves, power supply is realized through the parallel connection of the batteries, backup is provided, and the system can still normally operate when any power supply unit fails.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of fire prevention alarm, and particularly relates to a fire prevention alarm device for new energy charging piles. BACKGROUND

[0002] With the wide application of new energy vehicles, charging piles as key infrastructure are widely deployed in public and private places. However, the charging piles may cause fire due to electrical failure, overheating or external fire source during operation, and there is a significant safety risk. The battery of the traditional fire prevention alarm device has a short-circuit burning risk, and is prone to rapid efficiency decline or even failure in a high-temperature or fire environment. The single sensor has insufficient accuracy. These defects make it difficult for the existing device to meet the demand of new energy charging piles for high reliability, rapid response and continuous operation, and thus the fire prevention alarm device for new energy charging piles is proposed. SUMMARY

[0003] This section aims to summarize some aspects of the embodiments of the application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the application.

[0004] In view of the following technical problems in the prior art: the battery of the traditional fire prevention alarm device has a short-circuit burning risk, and is prone to rapid efficiency decline or even failure in a high-temperature or fire environment. The single sensor has insufficient accuracy, and cannot effectively manage the internal pressure problem caused by the high-temperature gasification medium.

[0005] To solve the above technical problems, the application provides the following technical scheme: a fire prevention alarm device for new energy charging piles, comprising:

[0006] A housing assembly, the housing assembly comprises a bottom box, a matching groove two, a fixed plate and a circuit board, the bottom box is a box body with an open top, a matching groove two is formed at the top end of the bottom box, a fixed plate is arranged at the bottom of the inner cavity of the bottom box, and a circuit board is arranged above the fixed plate;

[0007] A closing assembly, the closing assembly is located above the bottom box;

[0008] A detection assembly, the detection assembly comprises an inner box, a smoke sensor and a temperature sensor, the inner box is arranged on one side of the inner cavity of the bottom box, the inner side of the inner box is provided with a smoke sensor and a temperature sensor, and part of the temperature sensor extends out of the shell of the inner box and the bottom box;

[0009] The stable structural support is provided by the shell assembly, the sealing connection is facilitated by the matching groove two, and the stable installation of the internal components is ensured by the fixed plate and the circuit board; the closed assembly protects the internal elements from external interference; the detection assembly is isolated from the sensor by the inner box, and the temperature sensor is designed to extend out to facilitate accurate monitoring of the external environment temperature and smoke, thereby improving the accuracy of fire detection.

[0010] As a preferred technical solution of the fireproof alarm device for new energy charging piles, the closed assembly comprises a cover plate and a sealing strip, the bottom of the cover plate is provided with the sealing strip, the cover plate is matched with the upper side of the bottom box, and the sealing strip is movably inserted into the matching groove two;

[0011] The matching and combination of the cover plate and the bottom box, the movable insertion of the sealing strip and the matching groove two ensure the sealing of the device, prevent dust and moisture from entering, and facilitate disassembly and maintenance.

[0012] As a preferred technical solution of the fireproof alarm device for new energy charging piles, the closed assembly further comprises air vents, a plurality of air vents are formed in the sidewall of the top of the cover plate, and the cavity in the cover plate is communicated with the air vents;

[0013] The air vents allow air circulation while ensuring sealing, promote the exchange of internal air and external environment, and are conducive to the detection of smoke and temperature by the sensor, thereby improving the detection sensitivity.

[0014] As a preferred technical solution of the fireproof alarm device for new energy charging piles, the detection assembly further comprises a fixed frame, an S-shaped partition plate is arranged on the fixed frame, two smoke sensors are arranged on the S-shaped partition plate, the two ends of the S-shaped partition plate are tightly fitted with the inner wall of the inner cavity of the inner box, and one end of the fixed frame is connected with the inner wall of the inner cavity of the inner box through a fixed bolt;

[0015] The S-shaped partition plate limits the air circulation range and guides the airflow, thereby facilitating installation and maintenance.

[0016] As a preferred technical solution of the fireproof alarm device for new energy charging piles, the detection assembly further comprises an independent power supply assembly, the independent power supply assembly comprises a second air cylinder, a power supply sleeve and a closure cover, two power supply sleeves are arranged in the inner cavity of the inner box, the closure cover is arranged on the power supply sleeve, and a battery is arranged in the power supply sleeve;

[0017] The independent power supply assembly isolates the battery through the double power supply sleeves and the closure cover to prevent electrical faults from causing fire; the second air cylinder promotes air circulation, reduces the operating temperature of the battery, and improves the safety and stability of power supply.

[0018] As a preferred technical scheme of the fireproof alarm device for new energy charging pile, the detection assembly further comprises a heat absorption cavity and a supporting circular table, the edge portion of the power supply sleeve is provided with the heat absorption cavity, the bottom of the heat absorption cavity is provided with a plurality of supporting circular tables, the upper side and the lower side of the heat absorption cavity bottom portion are connected through the supporting circular tables, and the heat absorption cavity contains medium liquid;

[0019] The heat absorption cavity absorbs the heat generated by the battery through the medium liquid, the supporting circular table enhances the structural stability, reduces the battery temperature, prolongs the power supply time in the fire environment, and improves the operation reliability of the device.

[0020] As a preferred technical scheme of the fireproof alarm device for new energy charging pile, the detection assembly further comprises a sliding member, the sliding member comprises a ring-shaped piston, a spring one, a gas pressure extrusion groove, a blocking block and an exhaust hole, the top of the ring-shaped piston is provided with a plurality of exhaust holes, the inner circumferential surface of the ring-shaped piston is provided with a plurality of matching grooves one, the matching grooves one are movably connected with the blocking block, the upper side of the matching grooves one is communicated with the bottom end of the exhaust hole, the bottom end of the ring-shaped piston is provided with the gas pressure extrusion groove, the gas pressure extrusion groove penetrates the bottom of the matching grooves one, the top end of the spring one is fixedly connected with the inner top wall of the heat absorption cavity, the bottom end of the spring one is connected with the upper side of the ring-shaped piston, the inner top wall of the heat absorption cavity is provided with an air outlet groove, and the outer side of the ring-shaped piston is slidably connected with the inner wall of the heat absorption cavity.

[0021] The sliding member realizes automatic gas pressure adjustment through the ring-shaped piston, the spring one and the gas pressure extrusion groove and the like structure, when the medium liquid in the heat absorption cavity is gasified to generate high pressure, the gas is released through the exhaust hole and the air outlet groove, the battery and the device structure are protected, and the safety in the high-temperature environment is enhanced.

[0022] The medium liquid is gasified by heat, the gas pressure in the heat absorption cavity is increased, the high-pressure gas enters the gas pressure extrusion groove, the ring-shaped piston is pushed to move upward, the blocking block moves to the limiting groove along with the ring-shaped piston, the compression spring two is compressed, the exhaust hole is communicated with the gas pressure extrusion groove, and the high-pressure gas is discharged through the air outlet groove.

[0023] As a preferred technical scheme of the fireproof alarm device for new energy charging pile, the detection assembly further comprises a spring two, a limiting groove and a sliding block, the top of the heat absorption cavity is provided with the limiting groove, the sliding block is movably connected in the limiting groove, and the top end of the sliding block and the inner top wall of the limiting groove are connected through the spring two;

[0024] The spring two and the sliding block are matched with the limiting groove, the gas pressure adjustment mechanism is further optimized, the high-pressure gas is ensured to be smoothly discharged, and the structural stability of the heat absorption cavity and the safety of the device are enhanced.

[0025] As a preferred technical scheme of the fireproof alarm device for new energy charging pile, one side of the bottom box is provided with a communication groove, the inner box is provided with a connecting barrel and a gas permeation barrel one, the connecting barrel and the gas permeation barrel one extend into the communication groove, and the gas permeation barrel one is provided with a filter screen inside;

[0026] The combination of the communication groove and the air cylinder with the filter screen design promotes air circulation while filtering dust and particles, protects the sensor from external interference, and improves detection accuracy and device durability.

[0027] As a preferred technical solution of the fireproof alarm device for new energy charging piles, the inner box is provided with an air cylinder two on one side of the middle part of the inner cavity of the bottom box, and the inner cavity of the inner box is provided with a fan connected with the inner wall of the inner box through a connecting support;

[0028] The temperature sensor comprises a thermocouple, and a battery equalization chip is arranged on the circuit board, and the model of the battery equalization chip is LTC1871, and the battery equalization chip is adapted to two batteries in parallel.

[0029] The air cylinder two and the fan enhance the air circulation in the inner box, optimize the sensor detection environment, reduce the interference of smoke and dust, and improve the sensitivity and accuracy of fire detection.

[0030] Sensor backup: the processor compares two groups of sensor data and adopts a consistency checking algorithm (such as taking an average value or preferentially selecting data with smaller deviation) to ensure data reliability.

[0031] The new energy charging pile fireproof alarm device has the following advantages: the temperature sensor part extends out of the charging pile shell, ensuring accurate detection of the environment temperature; stable power supply guarantee: the independent power supply component includes two batteries in the power supply sleeve, which supply power through parallel connection, and back up each other, ensuring that the system can still operate normally when any power supply unit fails;

[0032] Efficient heat and gas pressure management: the heat absorption cavity is provided with medium liquid, which absorbs the heat generated by the operation of the battery and the circuit board, maintains the normal working temperature, and prolongs the operation time in the fire environment;

[0033] The ring-shaped piston, the spring one and the plugging block work cooperatively with the gas pressure extrusion groove, the exhaust hole and the air outlet groove, when the medium liquid is gasified at high temperature to cause the gas pressure in the heat absorption cavity 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. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0035] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0036] Figure 2 It is a schematic diagram of the three-dimensional structure of the bottom box in the present application;

[0037] Figure 3 Structure diagram of the detection assembly in the present application;

[0038] Figure 4 Structure diagram of the internal structure of the power supply sleeve in the present application;

[0039] Figure 5 Structure diagram of the three-dimensional structure of the annular piston in the present application;

[0040] Figure 6 Structure diagram of the partial enlargement of part A in the present application; Figure 3

[0041] Structure diagram of the partial enlargement of part B in the present application; Figure 7 Figure 3 Structure diagram of the partial enlargement of part C in the present application.

[0042] Figure 8 Figure 4 Structure diagram of the partial enlargement of part C in the present application.

[0043] The figure marks: 100, housing assembly; 101, bottom box; 102, matching groove two; 103, communicating groove; 105, fixed plate; 106, circuit board; 200, sealing assembly; 201, cover plate; 202, sealing strip; 203, air hole; 300, detection assembly; 301, inner box; 302, connecting cylinder; 303, air cylinder one; 304, air cylinder two; 305, power supply sleeve; 306, sealing cover; 307, connecting support; 308, heat absorption cavity; 309, supporting circular table; 310, annular piston; 311, spring one; 312, battery; 313, matching groove one; 315, spring two; 316, fan cylinder; 317, fan blade; 318, limiting groove; 319, sliding block; 320, air pressure extrusion groove; 321, plugging block; 322, exhaust hole; 323, smoke sensor; 324, temperature sensor; 325, fixing frame; 326, alarm; 327, filter screen; 328, air outlet groove; 329, motor. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0045] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0046] ​​Second, the "one embodiment" or "an embodiment" referred to herein can include a particular feature, structure, or characteristic. The various embodiments appearing at different places in the specification are not necessarily all cumulative or alternative implementations of the application. In other words, the "in one embodiment" appearing at different places in the specification does not necessarily refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments.

[0047] Third, the application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of illustration, and the schematic diagram is only an example, which should not limit the scope of protection of the application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0048] As shown in Figures 1-8 The application provides a fireproof alarm device for new energy charging pile, which comprises:

[0049] The shell assembly 100 comprises a bottom box 101, a matching groove two 102, a fixed plate 105 and a circuit board 106. The bottom box 101 is a box body with an open top. The top end of the bottom box 101 is provided with the matching groove two 102. The bottom of the inner cavity of the bottom box 101 is provided with the fixed plate 105. The upper side of the fixed plate 105 is provided with the circuit board 106.

[0050] The sealing assembly 200 is located above the bottom box 101.

[0051] The detection assembly 300 comprises an inner box 301, a smoke sensor 323 and a temperature sensor 324. The inner box 301 is arranged on one side of the inner cavity of the bottom box 101. The inner side of the inner box 301 is provided with the smoke sensor 323 and the temperature sensor 324. Part of the temperature sensor 324 extends out of the shell of the inner box 301 and the bottom box 101.

[0052] The shell assembly 100 provides stable structural support. The matching groove two 102 facilitates sealed connection. The fixed plate 105 and the circuit board 106 ensure stable installation of the internal assembly. The sealing assembly protects the internal elements from external interference. The detection assembly isolates the smoke sensor 323 and the temperature sensor 324 through the inner box 301. The temperature sensor 324 extends out of the design to facilitate accurate monitoring of the external environment temperature and smoke, thereby improving the accuracy of fire detection.

[0053] The sealing assembly 200 comprises 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 matching groove two 102.

[0054] The cover plate 201 is matched with the bottom box 101 to combine the sealing strip 202 and the movable plug-in design of the matching groove 102, which ensures the sealing of the inside of the device, prevents dust and moisture from entering, and facilitates disassembly and maintenance.

[0055] The closed assembly 200 further comprises air vents 203, a plurality of air vents 203 are arranged on the side wall of the top of the cover plate 201, and the cavity inside the cover plate 201 is communicated with the air vents 203;

[0056] The lower end of the cavity of the cover plate 201 is provided with an opening and is communicated with the inner cavity of the bottom box 101.

[0057] The air hole design allows air circulation while ensuring sealing, promotes the exchange of internal air and external environment, is conducive to the detection of smoke and temperature by the sensor, and improves the detection sensitivity.

[0058] The detection assembly 300 further comprises a fixing frame 325, the fixing frame 325 is provided with an S-shaped partition plate, two smoke sensors 323 are arranged on the S-shaped partition plate, the two ends of the S-shaped partition plate are tightly fitted with the inner wall of the inner cavity of the inner box 301, and one end of the fixing frame 325 is connected with the inner wall of the inner cavity of the inner box 301 through a fixing bolt;

[0059] The S-shaped partition plate limits the air circulation range and guides the airflow, which is convenient for installation and maintenance.

[0060] The detection assembly 300 further comprises an independent power supply assembly, the independent power supply assembly comprises a second air cylinder 304, a power supply sleeve 305 and a closed cover 306, the inner cavity of the inner box 301 is provided with two power supply sleeves 305, the power supply sleeves 305 are provided with closed covers 306, batteries 312 are arranged in the power supply sleeves 305, the inner cavity of the inner box 301 is provided with a partition plate to separate the cavity where the power supply sleeve 305 is located from the temperature sensor 324, the fixing frame 325 and the alarm 326, the cavity where the power supply sleeve 305 is located is provided with an exhaust pipe extending out of the bottom box 101 for exhaust and pressure relief;

[0061] The independent power supply assembly isolates the batteries 312 through the power supply sleeve 305 and the closed cover 306 to prevent electrical faults from causing fire; the second air cylinder 304 promotes air circulation, reduces the operating temperature of the detection assembly 300, and improves the safety and stability of the power supply process, and the power supply sleeve 305 is threadedly connected with the closed cover 306.

[0062] The detection assembly 300 further comprises a heat absorption cavity 308 and a supporting circular table 309, the edge portion of the power supply sleeve 305 is provided with the heat absorption cavity 308, a plurality of supporting circular tables 309 are arranged at the bottom of the heat absorption cavity 308, the upper side and the lower side of the bottom portion of the heat absorption cavity 308 are connected through the supporting circular tables 309, and the heat absorption cavity 308 contains a medium liquid;

[0063] The heat absorption cavity 308 absorbs heat generated by the battery, the circular table 309 enhances the structural stability, reduces the temperature of the battery 312, prolongs the power supply time in the fire environment, and improves the reliability of the device operation.

[0064] The detection assembly 300 further comprises a sliding member, the sliding member comprises a ring-shaped piston 310, a spring 311, a gas pressure extrusion groove 320, a blocking block 321 and an exhaust hole 322, the top of the ring-shaped piston 310 is provided with a plurality of exhaust holes 322, the inner circumferential surface of the ring-shaped piston 310 is provided with a plurality of matching grooves 313, the matching grooves 313 movably insert the blocking block 321, the upper side of the matching grooves 313 is communicated with the bottom end of the exhaust hole 322, the bottom end of the ring-shaped piston 310 is provided with the gas pressure extrusion groove 320, the gas pressure extrusion groove 320 penetrates the bottom of the matching groove 313, the top end of the spring 311 is fixedly connected with the inner top wall of the heat absorption cavity 308, the bottom end of the spring 311 is connected with the upper side of the ring-shaped piston 310, the inner top wall of the heat absorption cavity 308 is provided with a gas outlet groove 328, the outer side of the ring-shaped piston 310 is slidably connected with the inner wall of the heat absorption cavity 308, and the gas outlet groove 328 is communicated with the exhaust pipe;

[0065] The bottom end of the spring 311 pulls the upper side of the ring-shaped piston 310, so that the ring-shaped piston 310 is limited.

[0066] The sliding member realizes automatic gas pressure adjustment through the ring-shaped piston, the spring 311 and the gas pressure extrusion groove, when the medium liquid in the heat absorption cavity 308 is gasified to generate high pressure, the gas is released through the exhaust hole and the gas outlet groove, the battery and the device structure are protected, and the safety in the high-temperature environment is enhanced.

[0067] The detection assembly 300 further comprises a spring 315, a limiting groove 318 and a sliding block 319, the top of the heat absorption cavity 308 is provided with the limiting groove 318, the sliding block 319 is movably connected in the limiting groove 318, the top end of the sliding block 319 and the inner top wall of the limiting groove 318 are connected through the spring 315, and the upper side of the blocking block 321 and the lower side of the sliding block 319 are vertical surfaces.

[0068] The spring 315 and the sliding block 319 cooperate with the limiting groove 318, further optimize the gas pressure adjustment mechanism, ensure that the high-pressure gas is smoothly discharged, and enhance the structural stability of the heat absorption cavity 308 and the safety of the device.

[0069] One side of the bottom box 101 is provided with a communication groove 103, the inner box 301 is provided with a connecting barrel 302 and a breathable barrel 303, the connecting barrel 302 and the breathable barrel 303 extend into the communication groove 103, and the breathable barrel 303 is provided with a filter screen 327 inside.

[0070] The communication groove 103 and the air permeable cylinder one 303 are combined with the filter screen 327, which promotes air circulation while filtering dust and particulate matter, protects the sensor from external interference, improves detection accuracy and device durability, and the filter screen 327 aperture can block general dust but cannot block small smoke particles.

[0071] The inner box 301 is provided with an air permeable cylinder two 304 on one side of the middle part of the inner cavity of the bottom box 101, and the inner cavity of the inner box 301 is provided with a fan connected with the inner wall of the inner box 301 through a connecting support 307.

[0072] The air permeable cylinder two and the fan enhance the air circulation in the inner box, optimize the sensor detection environment, reduce dust interference, and improve the sensitivity and accuracy of fire detection.

[0073] The annular piston 310 is pre-installed in the heat absorption cavity 308 through the spring one 311, the blocking block 321 is initially embedded in the fitting groove one 313, and the sliding block 319 is limited in the limiting groove 318 through the spring two 315. The medium liquid is a cooling liquid with high boiling point and low volatility, which can ensure stable heat absorption and moderate vaporization in a high temperature environment. The medium liquid includes water liquid.

[0074] The circuit board 106 is provided with a communication module, the fan includes a fan cylinder 316, a motor 329 and fan blades 317, the motor 329 is connected with the fan cylinder 316 through a support on the inner side of the fan cylinder 316, and the power output end of the motor 329 is fixedly connected with the fan blades 317.

[0075] The motor 329 controls the rotation of the fan blades 317 to generate airflow; the airflow enters from the air permeable cylinder one 303 and is discharged from the air permeable cylinder two 304, and during this period, the smoke sensor 323 can detect and collect the smoke content of the external air to determine whether a fire occurs.

[0076] The battery 312 in the power sleeve 305 supplies power to the circuit board 106, the fan cylinder 316, the smoke sensor 323 and the temperature sensor 324.

[0077] The inner top wall of the fitting groove one 313 is an inclined surface, the upper side of the limiting groove 318 is also an inclined surface, and the inclined surface of the fitting groove one 313 and the inclined surface of the limiting groove 318 are slidingly matched.

[0078] The circuit board 106 is provided with a processor, the processor is electrically connected with the temperature sensor 324, the alarm 326 and the smoke sensor 323, the temperature and smoke conditions are detected through the temperature sensor 324 and the smoke sensor 323, so as to determine whether a fire occurs, when a fire occurs, an alarm sound is emitted through the alarm 326, and fire information is sent to the fire monitoring system of the fire alarm through the communication module.

[0079] The battery 312 is implemented in parallel as a backup, and the smoke sensor 323 and the temperature sensor 324 also have two, improving the accuracy of information acquisition and fault tolerance.

[0080] Processor: A microprocessor integrated on the circuit board 106 serves as the control core, responsible for data processing, logic judgment, and signal output. The microprocessor includes an MCU or a DSP.

[0081] Temperature sensor 324: A high-precision temperature sensor is used, connected to the processor through an analog or digital interface, to collect real-time environmental temperature data. The temperature sensor includes a thermocouple or an NTC thermistor.

[0082] Smoke sensor 323: An optical or ionic smoke sensor is used, connected to the processor through a digital interface or analog signal output, to detect the smoke concentration in the air.

[0083] Alarm 326: Contains a buzzer or a speaker, driven by the processor's GPIO pin or PWM signal, used to issue fire alarm sounds.

[0084] Communication module: Integrated on the circuit board 106, it can use Wi-Fi, 4G / 5G module or LoRa communication mode, connected to the processor through a serial or SPI interface, used to send fire information to a remote location.

[0085] Hardware connection method: The temperature sensor 324 and the smoke sensor 323 are connected to the input port of the processor through dedicated pins. The analog signal output by the sensor is converted by the ADC or directly input as a digital signal to the processor.

[0086] Alarm 326 is controlled by the GPIO output port of the processor, triggering a high-level or PWM signal to drive the alarm to sound.

[0087] The communication module and the processor interact through serial communication or SPI / I2C interface. The processor packages the fire information into a data packet and sends it through the communication module.

[0088] Two smoke sensors and two temperature sensors work in parallel, serving as backups 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. The processor model is STM32F103C8T6.

[0089] The battery 312 transmits power to the PMU of the circuit board 106 through the main power supply bus. The PMU provides 3.3V or 5V stable power supply for the processor and the communication module.

[0090] The processor communicates with the PMU through the I2C / SPI interface, dynamically adjusts the power distribution, and optimizes energy consumption.

[0091] Smoke sensor 323 and temperature sensor 324: The sensors are powered by the power supply distribution circuit of the circuit board 106, with low power consumption, using a 3.3V power supply.

[0092] Each sensor is connected to the circuit board through an independent terminal, with the power line and signal line separated, and a shielded cable is used to reduce electromagnetic interference.

[0093] Alarm 326: The alarm is powered by the power output terminal of the circuit board 106, and the PMU provides high-current support for high-decibel buzzing.

[0094] The processor controls the alarm switch through the GPIO or PWM signal to ensure fast response in case of fire.

[0095] Fan: The fan is powered by the power output terminal of the circuit board 106, and the PMU provides 1-2A current to support the operation of the fan. The S-shaped partition separates the inner cavity of the inner box 301.

[0096] The processor controls the start and stop of the fan through the MOSFET or relay to promote air circulation and optimize energy consumption.

[0097] The specific implementation is that the shell assembly 100 is fixed in the charging pile, the temperature sensor 324 is located on the outside of the charging pile and faces downward, the power sleeve 305 traps the battery 312 inside the power sleeve 305 to prevent the battery 312 from malfunctioning and catching fire, the specific heat capacity of the medium liquid in the heat absorption cavity 308 is above 2450 J / (kg*K) to absorb heat, which can not only reduce the temperature of the battery 312 to keep it in a normal operating state, but also prolong the normal operating time of the battery 312 in a fire. When the medium liquid absorbs too much heat, it will gasify in large quantities, causing the air pressure in the heat absorption cavity 308 to be too high, and the high-pressure gas enters the air pressure extrusion groove 320 and extrudes the annular piston 310. When the sealing block 321 corresponds to the limiting groove 318, the air extrusion sealing block 321 enters the limiting groove 318 along the axis of the matching groove one 313, and the sealing block 321 abuts against the sliding block 319 and extrudes the sliding block 319 to compress the spring two 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 of the exhaust hole 322 by the sealing block 321 is removed, the air pressure extrusion groove 320 is connected with the exhaust hole 322, and the air is discharged from the air pressure extrusion groove 320, the sealing block 321 and the exhaust hole 322 into the top end of the heat absorption cavity 308, and then discharged from the air outlet groove 328, thereby releasing the gas and reducing the air pressure.

[0098] It is to be understood that the development of the particular implementations described herein was motivated by the desire to solve real-world problems, and as such the claimed implementations can be susceptible to further implementation while still being generically consistent with the descriptions provided herein. Specifically, although many of the examples provided herein describe particular implementations with reference to particular applications for illustration, those of ordinary skill in the art will recognize that the described implementations can be used in other applications and / or modified to be used in other applications and that the descriptions provided herein do not limit the claimed implementations to the applications described by way of example. Those skilled in the art will readily recognize a variety of applications for the claimed implementations.

[0099] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, which should be covered by the claims of the present application.

Claims

1. A fireproof alarm device for new energy charging piles, characterized in that: The utility model relates to a smoke and temperature detection device, including: The shell assembly (100) includes the bottom box (101), the cooperation groove two (102), the fixed plate (105) and the circuit board (106), the bottom box (101) is the box body of upside open, the top of the bottom box (101) is provided with the cooperation groove two (102), the bottom of bottom box (101) inner chamber is provided with the fixed plate (105), the top of fixed plate (105) is provided with the circuit board (106), the closure assembly (200) is located the top of bottom box (101), the detection assembly (300) includes the inner box (301), the smoke sensor (323) and the temperature sensor (324), the inner box (301) sets up in the one side of bottom box (101) inner chamber, the inner side of inner box (301) is provided with the smoke sensor (323) and the temperature sensor (324), and the part of temperature sensor (324) passes through the shell of inner box (301) and bottom box (101) and projects, the detection assembly (300) still includes the sliding piece, the sliding piece includes annular piston (310), spring one (311), gas pressure extrusion groove (320), plugging block (321) and exhaust hole (322), the top of annular piston (310) is provided with a plurality of exhaust holes (322), the inner periphery of annular piston (310) is provided with a plurality of cooperation groove one (313), cooperation groove one (313) is movably inserted with plugging block (321), and the top side of cooperation groove one (313) is communicated with the bottom end of exhaust hole (322), and the bottom end of annular piston (310) is provided with gas pressure extrusion groove (320), and gas pressure extrusion groove (320) penetrates the bottom of cooperation groove one (313), and the top end of spring one (311) is fixedly connected with the inner top wall of heat absorption cavity (308), and the bottom end of spring one (311) is connected with the top side of annular piston (310), and the inner top wall of heat absorption cavity (308) is provided with air outlet groove (328), and the outer side of annular piston (310) is slidably connected with the inner wall of heat absorption cavity (308), the detection assembly (300) still includes spring two (315), limit groove (318) and sliding block (319), and the top of heat absorption cavity (308) is provided with limit groove (318), and limit groove (318) movably connects with sliding block (319), and the top end of sliding block (319) is connected with the inner top wall of limit groove (318) through spring two (315).

2. The fireproof alarm device for new energy charging pile according to claim 1, characterized in that: The closure assembly (200) includes the cover plate (201) and the sealing strip (202), and the bottom of the cover plate (201) is provided with the sealing strip (202), and the cover plate (201) is matched with the top side of the bottom box (101), and the sealing strip (202) is movably inserted with the cooperation groove two (102).

3. The fireproof alarm device for new energy charging pile according to claim 2, characterized in that: The closure assembly (200) further includes air holes (203), and a plurality of air holes (203) are formed in the sidewall of the top of the cover plate (201), and the chamber in the cover plate (201) is communicated with the air holes (203).

4. The fireproof alarm device for new energy charging pile according to claim 1, characterized in that: The detection assembly (300) further comprises a fixed frame (325) provided with an S-shaped partition plate, two smoke sensors (323) are arranged on the S-shaped partition plate, and two ends of the S-shaped partition plate are tightly combined with the inner wall of the inner cavity of the inner box (301); one end of the fixed frame (325) is connected with the inner wall of the inner cavity of the inner box (301) through a fixed bolt.

5. The fireproof alarm device for new energy charging pile according to claim 1, characterized in that: The detection assembly (300) further comprises an independent power supply assembly, the independent power supply assembly comprises a second air permeable cylinder (304), a power supply sleeve (305) and a sealing cover (306), the inner cavity of the inner box (301) is provided with two power supply sleeves (305), a battery (312) is arranged in the power supply sleeve (305), and the power supply sleeve (305) is provided with the sealing cover (306).

6. The fireproof alarm device for new energy charging pile according to claim 1, characterized in that: The detection assembly (300) further comprises a heat absorption cavity (308) and a supporting circular table (309), the edge portion of the power supply sleeve (305) is provided with the heat absorption cavity (308), a plurality of supporting circular tables (309) are arranged at the bottom of the heat absorption cavity (308), the upper side and the lower side of the bottom portion of the heat absorption cavity (308) are connected through the supporting circular tables (309), and the heat absorption cavity (308) contains a medium liquid.

7. The fireproof alarm device for new energy charging pile according to claim 1, characterized in that: The bottom box (101) is provided with a communication groove (103) on one side, the inner box (301) is provided with a connecting cylinder (302) and an air permeable cylinder (303), the connecting cylinder (302) and the air permeable cylinder (303) extend into the communication groove (103), and the air permeable cylinder (303) is provided with a filter screen (327) inside.

8. The fireproof alarm device for new energy charging pile according to claim 1, characterized in that: The inner box (301) is provided with the second air permeable cylinder (304) on one side facing the middle of the inner cavity of the bottom box (101), the inner cavity of the inner box (301) is provided with a fan, and the fan is connected with the inner wall of the inner box (301) through a connecting support (307).

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