A charging pile line protection system

Abstract

The present invention discloses a charging pile line protection system, comprising: a charging pile shell and a circuit line arranged inside the charging pile shell, a refrigerator is arranged on the inner wall of the charging pile shell, the refrigerator is provided with an air suction port and an air outlet, the air outlet is connected to a cold air duct, the cold air duct can wrap the outer wall of the circuit line, the cold air duct comprises an outer film and an inner film, the outer film and the inner film are integrally formed, a first cavity can be formed between the outer film and the inner film, wind at the air outlet can enter the first cavity, the inner film is arranged on a side close to the outer wall of the circuit line, a second cavity is formed between the inner film and the outer wall of the circuit line, a plurality of air outlet holes are arranged on the inner film, wind is discharged from the first cavity into the second cavity through the air outlet holes, an air suction duct is arranged at one end of the second cavity, the air suction duct is connected to the air suction port, and the air suction duct can draw the wind in the second cavity into the refrigerator.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy charging pile equipment, and in particular to a charging pile line protection system. Background Art

[0002] In recent years, with the widespread popularization of vehicle electrification, the construction and improvement of urban charging pile networks have been accelerated, and the charging pile industry has been accelerated. When the charging pile is in use, its internal electrical components will generate heat. As the heat dissipates, the temperature inside the entire charging pile will rise rapidly. The high temperature environment will affect the stable operation of the electrical components. Therefore, it is necessary to set up a heat dissipation system to cool the charging pile. In the prior art, a heat dissipation system is often used to dissipate the heat inside the entire charging pile.

[0003] However, during the use of the charging pile, its internal circuit lines may short-circuit. When short-circuited, the current in the line generally increases several times to dozens of times, and a large amount of heat energy is rapidly generated. This heat can immediately burn through the insulation of the conductor, or the line current exceeds the rated value, which will cause the line to heat up. Overheating of the line will not only affect the normal use of the charging pile, but if heat dissipation is not performed in time, it may also cause a fire and damage the entire charging pile. The existing method of dissipating heat for the entire internal environment of the charging pile cannot effectively dissipate the heat of the short-circuited line in time. In order to prevent the heat generated when the line is short-circuited from damaging the charging pile and even the vehicle being charged, a charging pile line protection system is now proposed to solve the above problem. Summary of the invention

[0004] The present invention overcomes the deficiencies of the prior art and provides a charging pile line protection system.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a charging pile line protection system, comprising: a charging pile housing and a circuit line arranged inside the charging pile housing, a refrigerator is arranged on the inner wall of the charging pile housing, and the refrigerator is provided with an air intake port and an air outlet;

[0006] The air outlet is connected to a cold air duct, the cold air duct can wrap the outer wall of the circuit line, the cold air duct includes an outer film and an inner film, the outer film and the inner film are integrally formed, a first cavity can be formed between the outer film and the inner film, and the wind from the air outlet can enter the first cavity;

[0007] The inner layer film is arranged on a side close to the outer wall of the circuit line, a second cavity is formed between the inner layer film and the outer wall of the circuit line, a plurality of air outlet holes are arranged on the inner layer film, and the wind force is discharged from the first cavity into the second cavity through the air outlet holes;

[0008] An exhaust duct is provided at one end of the second cavity, the exhaust duct is connected to the exhaust port, and the exhaust duct can draw wind in the second cavity into the refrigerator.

[0009] In a preferred embodiment of the present invention, a temperature sensing device is provided on the contact surface between the inner film and the circuit line, the temperature sensing device is electrically connected to the refrigerator, and the temperature sensing device controls the operation of the refrigerator.

[0010] In a preferred embodiment of the present invention, the refrigerator comprises a housing, the air inlet is arranged on both sides of the refrigerator, the air inlet is arranged on both sides of the refrigerator, and the air outlet is arranged on

[0011] In a preferred embodiment of the present invention, a pulse battery and a storage battery are provided in the refrigerator, and the pulse battery and the storage battery do not work at the same time.

[0012] In a preferred embodiment of the present invention, an overcurrent protection device is provided in the housing of the charging pile, and the battery is connected to the overcurrent protection device. When the overcurrent protection device works, the battery works.

[0013] In a preferred embodiment of the present invention, the pulse power supply includes a micro wind power generator and a pulse battery. The micro wind power generator is connected to the air outlet and converts the wind energy into electrical energy and stores it in the pulse battery.

[0014] In a preferred embodiment of the present invention, the exhaust duct includes a duct membrane, the duct membrane covers the surface of the outer membrane, an exhaust cavity is formed between the duct membrane and the outer membrane, the exhaust cavity is connected to the second cavity, and the wind can enter the exhaust cavity from the second cavity.

[0015] In a preferred embodiment of the present invention, the exhaust cavity is connected to the exhaust port, and the wind force enters the exhaust port from the exhaust cavity.

[0016] In a preferred embodiment of the present invention, the air outlet includes a vertical air hole and lateral air holes arranged on both sides of the vertical air hole, the lateral air holes are conical holes, the openings of the conical holes are all aligned with one end away from the vertical air hole opening, and the vertical air outlet is cylindrical.

[0017] In a preferred embodiment of the present invention, the hole depth is 0.6-1.5 times the total depth of the air hole, and the angle between the straight line of the conical hole hole section and the axis of the conical hole air hole is 15-45°.

[0018] In a preferred embodiment of the present invention, the refrigerator exhaust port is provided with a semiconductor power generation device, the semiconductor power generation device is connected to the battery, and the semiconductor power generation device absorbs thermal energy from the wind at the exhaust port and converts it into electrical energy and stores it in the battery.

[0019] In a preferred embodiment of the present invention, the inner layer membrane, the outer layer membrane and the pipeline membrane are all heat-resistant and air-impermeable composite materials, and the membrane thickness is 0.1-0.3 mm.

[0020] In a preferred embodiment of the present invention, the cold air duct includes an air-cooling main pipe and a plurality of air-cooling branch pipes arranged on the air-cooling main pipe, one refrigerant is connected to at least one air-cooling main pipe, and one air-cooling main pipe is connected to at least two air-cooling branch pipes.

[0021] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0022] (1) The present invention provides a refrigerator with an air intake and an air outlet on the inner wall of the charging pile shell, draws air through the air intake, passes the wind through the refrigerator for cooling, and then delivers the cold air through the air outlet. The air outlet is connected to a cold air duct, and the cold air duct is wrapped around the outer wall of the circuit line. The cold air is delivered to the outer wall of the circuit line by the cold air duct to cool the circuit line, thereby preventing the temperature of the circuit line from rising rapidly when the load is too large or the short circuit occurs, causing a fire, and ensuring the safety of the power supply to the circuit line.

[0023] (2) A temperature sensor is provided at the contact surface between the inner membrane of the cold air duct and the outer wall of the electric circuit of the present invention. The temperature sensor is connected to the refrigerator. The refrigerator works only when the temperature of the circuit line exceeds the set value, thereby reducing energy consumption. Meanwhile, a pulse battery and a storage battery are provided in the refrigerator. The pulse battery drives the refrigerator to work in a cycle, thereby reducing energy consumption. Meanwhile, the storage battery is connected to the main power supply. When the circuit line is short-circuited, the storage battery works to continuously cool the circuit line, thereby avoiding fire caused by rising temperature. Meanwhile, the temperature of the circuit line can be quickly lowered to reduce the internal damaged area.

[0024] (3) The present invention arranges the exhaust duct on the outer surface of the cold air duct to form a sealed inner circulation duct, thereby preventing external dust from entering and adhering to the outer wall of the electric line, causing the local temperature of the electric line to be too high and leading to short circuit and the like. At the same time, the sealed inner flow duct isolates the entry of external oxygen, and can prevent the spread of flames due to insufficient internal oxygen when a short circuit occurs in the electric line, and quickly extinguish the flames by injecting cold air, thereby ensuring the safety of the electric line. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a schematic diagram of the protection system structure of a preferred embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the cold air channel and the exhaust air channel structure of a preferred embodiment of the present invention.

[0028] In the figure: 1. Charging pile shell; 2. Cold air duct; 21. Outer membrane; 22. Inner membrane; 23. First cavity; 24. Second cavity; 25. Air outlet; 3. Refrigeration machine; 4. Exhaust duct; 41. Duct membrane. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] like Figure 1-2As shown, a charging pile shell 1 and a circuit line arranged inside the charging pile shell 1, a refrigerator 3 is arranged on the inner wall of the charging pile shell 1, the refrigerator 3 is provided with an air intake port and an air outlet, the air outlet is connected to a cold air duct 2, the cold air duct 2 can wrap the outer wall of the circuit line, and air is drawn through the air intake port, and the wind is cooled by the refrigerator 3, and then the cold air is transported out from the air outlet, the air outlet is connected to the cold air duct 2, the cold air duct 2 is wrapped around the outer wall of the circuit line, and the cold air is transported to the outer wall of the circuit line by the cold air duct 2 to cool the circuit line, thereby avoiding a fire caused by a rapid rise in temperature of the electric line when the load is too large or the short circuit occurs, thereby ensuring the safety of electricity use of the circuit line.

[0033] The cold air duct 2 includes an outer membrane 21 and an inner membrane 22. The outer membrane 21 and the inner membrane 22 are integrally formed. A first cavity 23 can be formed between the outer membrane 21 and the inner membrane 22. Wind from the air outlet can enter the first cavity 23. The inner membrane 22 is arranged on the side close to the outer wall of the circuit line. A second cavity 24 is formed between the inner membrane 22 and the outer wall of the circuit line. A plurality of air outlet holes 25 are arranged on the inner membrane 22. Wind is discharged from the first cavity 23 into the second cavity 24 through the air outlet holes 25. Cold air is pressed into the second cavity 24 from the sealed first cavity 23. Under the action of pressure, the cold air can be evenly pressed in. An exhaust duct 4 is arranged at one end of the second cavity 24. The exhaust duct 4 is connected to the exhaust port. The exhaust duct 4 can draw the wind in the second cavity 24 into the refrigerator 3.

[0034] The air outlet 25 includes a vertical air hole and lateral air holes arranged on both sides of the vertical air hole. The wind direction adopts a vertical and lateral blowing method. The wind force is more stable and has a wider range, which is more conducive to the heat dissipation hole. The lateral air hole is a conical hole, and the conical hole openings are all aligned with one end away from the vertical air hole opening. The vertical air outlet 25 is cylindrical, and the hole depth is 0.6-1.5 times the total depth of the air hole. The angle between the straight line of the conical hole opening section and the axis of the conical hole air hole is 15-45°, which can evenly transport the wind force from the first cavity 23 to the second cavity 24, thereby evenly cooling the electrical circuit and improving the overall cooling efficiency.

[0035] The exhaust duct 4 includes a duct membrane 41, and the duct membrane 41 covers the surface of the outer membrane 21. The exhaust duct 4 is set in the form of the duct membrane 41 covering the outer membrane 21 to reduce the overall volume of the exhaust device. An exhaust cavity is formed between the duct membrane 41 and the outer membrane 21, and the exhaust cavity is connected with the second cavity 24. Wind can enter the exhaust cavity from the second cavity 24, and the exhaust cavity is connected with the exhaust port to form a sealed inner circulation air duct, which prevents external dust from entering and adhering to the outer wall of the electric line, causing the local temperature of the electric line to be too high and cause short circuits. At the same time, the sealed inner flow air duct isolates the entry of external oxygen, which can prevent the spread of flames due to insufficient internal oxygen when the electric line is short-circuited and catches fire, and quickly extinguish it by injecting cold air, thereby ensuring the safety of the electric line.

[0036] The inner film 22 is provided with a temperature sensing device at the contact surface with the circuit line. The temperature sensing device is electrically connected to the refrigerator 3, and the temperature sensing device controls the operation of the refrigerator 3. The refrigerator 3 is provided with a pulse battery and a storage battery, and the pulse battery and the storage battery do not work at the same time. An overcurrent protection device is provided in the charging pile housing 1, and the storage battery is connected to the overcurrent protection device. When the overcurrent protection device works, the storage battery works. The inner film 22 of the cold air duct 2 is provided with a temperature sensor at the contact surface with the outer wall of the electric circuit. The temperature sensor is connected to the refrigerator 3. When the temperature of the circuit line exceeds the set value, the refrigerator 3 will work, reducing energy consumption. At the same time, a pulse battery and a storage battery are provided in the refrigerator 3. The pulse battery drives the refrigerator 3 to work according to a cycle to reduce energy consumption. At the same time, the storage battery is connected to the main power supply. When the circuit line is short-circuited, the storage battery works to continuously cool the circuit line to avoid fire caused by rising temperature. At the same time, it can also quickly lower the circuit line temperature to reduce the internal damage area.

[0037] The pulse power supply includes a micro wind generator and a pulse battery. The micro wind generator is connected to the air outlet and converts wind energy into electrical energy and stores it in the pulse battery. The air outlet of the refrigerator 3 is provided with a semiconductor power generation device, which is connected to the battery. The semiconductor power generation device absorbs the heat energy in the wind at the air outlet and converts it into electrical energy and stores it in the battery, thereby realizing the recycling of energy.

[0038] The cold air duct 2 includes an air-cooling main pipe and several air-cooling branch pipes arranged on the air-cooling main pipe. One refrigerant is connected to at least one air-cooling main pipe, and one air-cooling main pipe is connected to at least two air-cooling branch pipes. One refrigerator 3 can cool multiple circuit lines at the same time, reducing the volume of the device while reducing energy consumption.

[0039] When the present invention is in use, the temperature sensing device is set to a certain value. When the temperature of the outer wall of the circuit line exceeds the set value, the pulse power supply drives the refrigerator 3 to work, and the exhaust duct 4 exhausts air into the refrigerator 3. The refrigerator 3 outputs the refrigerated wind from the air outlet and enters the cold air duct 2. The wind enters the second cavity 24 from the air outlet 25 of the first cavity 23 in the duct. During the entry process, the cold air is affected by the shape of the air outlet 25, and enters the second cavity 24 from the center to both sides, thereby cooling the circuit line in the second cavity 24 to prevent the circuit line from causing a fire due to excessive temperature. The pulse power supply provides power to the refrigerator 3 in a cycle, which can be 1-5 minutes as a cycle, thereby reducing unnecessary power consumption. The cold air passing through the second cavity 24 enters the exhaust duct 4, and returns to the refrigerator 3 through the exhaust duct 4, realizing circulation in the air duct, preventing external wind from entering the channel and carrying pollutants to adhere to the circuit line to cause a short circuit in the circuit line.

[0040] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A charging pile line protection system, comprising: A charging pile housing and a circuit line arranged inside the charging pile housing, characterized in that a refrigerator is arranged on the inner wall of the charging pile housing, and the refrigerator is provided with an air intake and an air outlet; The air outlet is connected to a cold air duct, the cold air duct can wrap the outer wall of the circuit line, the cold air duct includes an outer film and an inner film, the outer film and the inner film are integrally formed, a first cavity can be formed between the outer film and the inner film, and the wind from the air outlet can enter the first cavity; The inner layer film is arranged on a side close to the outer wall of the circuit line, a second cavity is formed between the inner layer film and the outer wall of the circuit line, a plurality of air outlet holes are arranged on the inner layer film, and the wind force is discharged from the first cavity into the second cavity through the air outlet holes; An exhaust duct is provided at one end of the second cavity, the exhaust duct is connected to the exhaust port, and the exhaust duct can draw wind in the second cavity into the refrigerator.

2. A charging pile line protection system according to claim 1, characterized in that: The contact surface between the inner layer film and the circuit line is provided with a temperature sensing device, the temperature sensing device is electrically connected to the refrigerator, and the temperature sensing device controls the operation of the refrigerator.

3. A charging pile line protection system according to claim 1, characterized in that: A pulse power supply and a storage battery are arranged in the refrigerator, and the pulse power supply and the storage battery do not work simultaneously.

4. A charging pile line protection system according to claim 3, characterized in that: An overcurrent protection device is arranged in the housing of the charging pile, and the storage battery is connected to the overcurrent protection device. When the overcurrent protection device works, the storage battery works.

5. A charging pile line protection system according to claim 3, characterized in that: The pulse power supply comprises a micro wind power generator and a pulse battery. The micro wind power generator is connected to the air outlet and converts the wind energy into electrical energy and stores it in the pulse battery.

6. A charging pile line protection system according to claim 1, characterized in that: The exhaust duct includes a duct membrane, which covers the surface of the outer membrane. An exhaust cavity is formed between the duct membrane and the outer membrane. The exhaust cavity is connected to the second cavity, and the wind can enter the exhaust cavity from the second cavity.

7. A charging pile line protection system according to claim 6, characterized in that: The air suction cavity is communicated with the air suction port, and the wind enters the air suction port from the air suction cavity.

8. A charging pile line protection system according to claim 1, characterized in that: The air outlet comprises a vertical air hole and lateral air holes arranged on both sides of the vertical air hole. The lateral air holes are conical holes. The openings of the conical holes are all aligned with one end away from the opening of the vertical air hole. The vertical air hole is cylindrical.

9. A charging pile line protection system according to claim 8, characterized in that: The depth of the conical hole opening is 0.6-1.5 times the total depth of the air hole, and the angle between the straight line of the conical hole opening section and the conical hole axis is 15-45°.

10. A charging pile line protection system according to claim 3, characterized in that: The refrigerator air outlet is provided with a semiconductor power generation device, which is connected to the storage battery. The semiconductor power generation device absorbs heat energy from the wind at the air outlet and converts it into electrical energy and stores it in the storage battery.

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