Cooling system, charging gun and charging socket

Abstract

The utility model discloses a cooling system, a charging gun and a charging socket. The cooling system comprises a shell, and a heating element, a temperature sensor, a controller and a driving mechanism which are arranged in the shell. An opening is formed in the shell, and a valve is arranged on the opening. The temperature sensor senses the temperature in the shell, and when the temperature exceeds a first threshold value, a first control signal is sent to the controller. And after receiving the first control signal, the controller sends a second control signal to the driving mechanism. And after the driving mechanism receives the second control signal, the valve is controlled to be opened, so that the interior of the shell communicates with the outside. The cooling system can dissipate heat in the cooling system, so that the temperature in the cooling system is kept within a reasonable range.

Description

Technical Field

[0001] This utility model relates to the field of new energy charging connector technology, and in particular to a cooling system, a charging gun, and a charging socket. Background Technology

[0002] With the rapid development of electric vehicle battery technology, the market demand for high-power charging connectors, such as charging guns and charging sockets, is increasing daily. Currently, high-power DC charging guns and charging sockets use liquid cooling systems, which are expensive and significantly increase costs. High-power connectors using air cooling or blower cooling systems face the challenge of simultaneously achieving adequate ventilation and sealing. Utility Model Content

[0003] The main purpose of this invention is to propose a cooling system, a charging gun, and a charging socket, which aims to solve the problem that ventilation and sealing cannot be simultaneously achieved when the charging connector adopts air heat dissipation or wind cooling methods.

[0004] To achieve the above objectives, this utility model proposes a cooling system, including a housing and a heating element, a temperature sensor, a controller, and a drive mechanism disposed within the housing.

[0005] The housing is provided with an opening, and a valve is provided on the opening;

[0006] The temperature sensor senses the temperature inside the housing, and when the temperature exceeds a first threshold, it sends a first control signal to the controller.

[0007] After receiving the first control signal, the controller sends a second control signal to the drive mechanism;

[0008] After receiving the second control signal, the drive mechanism controls the valve to open, so as to connect the inside of the housing with the outside.

[0009] Optionally, in one embodiment of the present invention, an air pump and a pipe are further provided inside the housing, one end of the pipe is connected to the air pump, the other end of the pipe is disposed near the heating element, and the air pump is connected to the controller;

[0010] When the controller receives the first control signal, the controller controls the air pump to operate so as to deliver air to the heating element.

[0011] Optionally, in one embodiment of the present invention, when the temperature sensor senses that the temperature inside the housing is lower than a second threshold, a third control signal is sent to the controller;

[0012] After receiving the third control signal, the controller sends a fourth control signal to the drive mechanism; after receiving the fourth control signal, the drive mechanism controls the valve to close, so as to isolate the inside of the housing from the outside; and when the controller receives the third control signal, the controller controls the air pump to stop working.

[0013] Optionally, in one embodiment of the present invention, the driving mechanism includes a motor and a driving component connected to the motor;

[0014] The valve includes a drive unit and a connecting part connected to the drive unit. The drive unit is disposed inside the housing, and the connecting part is disposed inside the opening.

[0015] The connecting part has a venting groove on its side wall, and the valve has a venting cavity that communicates with the inside of the housing. The venting groove and the venting cavity are connected.

[0016] The driving component drives the valve to move along the opening axis, so that the vent groove extends into or out of the opening, thereby achieving the closing and opening of the valve.

[0017] Optionally, in one embodiment of the present invention, the driving component includes a control lever and steel balls spaced apart on the control lever;

[0018] The drive unit is a gear, and the spacing and size of the steel balls match the tooth grooves of the gear so that the steel balls and the gear mesh.

[0019] The connecting part and the open threaded connection;

[0020] The motor drives the control lever to move, which in turn causes the steel ball to drive the drive unit to rotate around the axial direction.

[0021] Optionally, in one embodiment of the present invention, the valve is further provided with a closing part at the end away from the driving part, the closing part extending radially from the outer wall of the connecting part, and the diameter of the closing part being greater than or equal to the opening diameter.

[0022] Optionally, in one embodiment of the present invention, the housing is provided with an inwardly protruding cylindrical connecting wall, and the opening is formed in the connecting wall.

[0023] Optionally, in one embodiment of the present invention, the driving part is provided with a connecting groove around the connecting part on the side facing the opening, and the size of the connecting groove matches the size of the connecting wall so that when the valve is opened, the connecting wall part is accommodated in the connecting groove.

[0024] Optionally, in one embodiment of the present invention, the ventilation cavity is provided with a partition, which divides the ventilation cavity into a first ventilation cavity and a second ventilation cavity arranged at intervals. The ventilation groove includes a first ventilation groove and a second ventilation groove arranged at intervals. The first ventilation cavity and the first ventilation groove are connected to form a first ventilation channel, and the second ventilation cavity and the second ventilation groove are connected to form a second ventilation channel. When the valve is opened, outside air enters the air pump through the second ventilation channel, and the gas inside the housing is discharged from the housing through the first ventilation channel, so as to realize the gas circulation between the inside and outside of the housing.

[0025] Optionally, in one embodiment of the present invention, the spacer is a spacer plate passing through the axis of the ventilation cavity; the first ventilation channel and the second ventilation channel are respectively disposed at opposite ends of the spacer plate.

[0026] Optionally, in one embodiment of the present invention, the temperature sensor is disposed within the heating element.

[0027] Optionally, in one embodiment of the present invention, the heating element and the pipe are arranged side by side and in contact.

[0028] This utility model also proposes a charging gun, which is equipped with the cooling system described above, the housing is a gun shell, and the heating element is a power pin.

[0029] This utility model also proposes a charging socket, which is equipped with the cooling system described above, the housing is the outer shell of the charging socket, and the heating element is a power socket.

[0030] This utility model charging system has an opening on the cooling system housing, and a valve is installed on the opening. When the temperature inside the housing exceeds a first threshold, the controller controls the drive mechanism to open the valve, so as to connect the inside of the housing with the outside, thereby realizing heat dissipation inside the cooling system and keeping the temperature inside the cooling system within a reasonable range. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the cooling system of this utility model;

[0033] Figure 2This is a schematic diagram of the module connection of an embodiment of the cooling system of this utility model;

[0034] Figure 3 This is a schematic diagram of the structure of an embodiment of the cooling system opening of this utility model;

[0035] Figure 4 This is a three-dimensional structural diagram of the valve of this utility model;

[0036] Figure 5 This is a front view of the valve of this utility model;

[0037] Figure 6 for Figure 5 Cross-sectional view along point AA;

[0038] Figure 7 This is a three-dimensional structural diagram of another embodiment of the valve of this utility model.

[0039] Explanation of icon numbers:

[0040] 100. Cooling system; 10. Housing; 11. Opening; 12. Connecting wall; 21. Heating element; 22. Temperature sensor; 23. Controller; 24. Air pump; 25. Pipeline; 30. Drive mechanism; 31. Motor; 32. Drive component; 321. Control lever; 322. Steel ball; 40. Valve; 41. Drive unit; 411. Connecting groove; 42. Connecting part; 421. First vent groove; 422. Second vent groove; 431. First vent chamber; 432. Second vent chamber; 44. First venting channel; 45. Second venting channel; 46. Sealing part; 47. Spacing part.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] With the rapid development of electric vehicle battery technology, the market demand for high-power charging connectors, such as charging guns and charging sockets, is increasing daily. Currently, high-power DC charging guns and charging sockets use liquid cooling systems, which are expensive and significantly increase costs. High-power connectors using air cooling or blower cooling systems face the challenge of simultaneously achieving adequate ventilation and sealing.

[0046] In view of this, the present invention proposes a charging system, which provides an opening on the cooling system housing and a valve on the opening. When the temperature inside the housing exceeds a first threshold, the controller controls the drive mechanism to open the valve, thereby connecting the inside of the housing with the outside, thus achieving heat dissipation inside the cooling system and keeping the temperature inside the cooling system within a reasonable range.

[0047] To better understand the above technical solution, a detailed explanation of the technical solution is provided below with reference to the accompanying drawings.

[0048] like Figure 1-7 As shown, this utility model proposes a cooling system 100, including a housing 10 and a heating element 21, a temperature sensor 22, a controller 23, and a drive mechanism 30 disposed within the housing 10; the housing 10 has an opening 11, and a valve 40 is provided on the opening 11; the temperature sensor 22 senses the temperature inside the housing 10, and when the temperature exceeds a first threshold, it sends a first control signal to the controller 23; after receiving the first control signal, the controller 23 sends a second control signal to the drive mechanism 30; after receiving the second control signal, the drive mechanism 30 controls the valve 40 to open, so that the inside of the housing 10 is connected to the outside.

[0049] Understandably, the cooling system 100 includes a housing 10, within which a heating element 21 is installed. The heating element 21 generates a large amount of heat during operation. The air inside the housing 10 absorbs this heat, causing the air temperature inside the housing 10 to rise. An opening 11 is provided on the housing 10, and a valve 40 is installed on the opening 11. The housing 10 also includes a temperature sensor 22, a controller 23, and a drive mechanism. The temperature sensor 22 can sense the temperature inside the housing 10. When the temperature exceeds a first threshold, it sends a first control signal to the controller 23. Upon receiving the first control signal, the controller 23 sends a second control signal to the drive mechanism 30. Upon receiving the second control signal, the drive mechanism 30 opens the valve 40, allowing the heated air inside the housing 10 to escape through the valve 40, while air at normal temperature enters the housing 10 through the valve 40. This achieves heat dissipation within the cooling system 100, maintaining the internal temperature of the cooling system 100 within a reasonable range. Understandably, the temperature sensor 22 can send signals to the controller 23 via wired or wireless means. The controller 23 can also send signals to the drive mechanism 30 via wired or wireless means. Understandably, the drive mechanism 30 and valve 40 can take various forms to achieve opening and closing. For example, valve 40 can be a flat plate that can cover the opening 11. The drive mechanism 30 can control the telescopic arm to translate perpendicularly to the axis of the opening 11 via a cylinder, motor 31, etc., thereby driving valve 40 to translate along the axis of the opening 11 to achieve opening and closing of valve 40. Alternatively, valve 40 can be a sealing piece hinged to the opening 11 of the housing 10. The drive mechanism 30 controls valve 40 to rotate around the hinge to achieve opening and closing of valve 40. Of course, the drive mechanism 30 can also cooperate with valve 40 in other ways to achieve opening and closing of valve 40, which is not limited here.

[0050] Understandably, the number of openings 11 can be one or more. Preferably, when there are multiple openings 11, an independent valve 40 can be provided at each opening 11. The opening and closing of multiple valves 40 is controlled by the drive mechanism 30 to control the sealing of the entire housing 10. By providing multiple openings 11, the contact surface between the gas inside and outside the housing 10 is increased, thereby improving the heat dissipation effect.

[0051] Furthermore, in one embodiment of the present invention, an air pump 24 and a pipe 25 are also provided inside the housing 10. One end of the pipe 25 is connected to the air pump 24, and the other end of the pipe 25 is located near the heating element 21. The air pump 24 is connected to the controller 23. When the controller 23 receives the first control signal, the controller 23 controls the air pump 24 to work to deliver air to the heating element 21.

[0052] Understandably, when the temperature inside the housing 10 exceeds the first threshold, the controller 23 controls the drive mechanism 30 to open the valve 40, at which point the inside and outside of the housing 10 are connected. Simultaneously, the controller 23 controls the air pump 24 to operate. At this time, gas at normal temperature outside the housing 10 enters the air pump 24 through the valve 40. The air pump 24 compresses the normal-temperature gas, generating high-pressure gas, which is then transported to the heating element 21 through the pipe 25. Since the temperature of the heating element 21 is higher than the air temperature outside the housing 10, the high-pressure gas absorbs the heat from the heating element 21, becoming high-temperature gas. This high-temperature gas accumulates near the heating element 21, flows inside the housing 10, and is discharged to the outside of the housing 10 through the opening 11, thereby achieving heat dissipation for the heating element 21.

[0053] Understandably, when only one opening 11 is provided on the housing 10, normal-temperature gas outside the housing 10 enters the housing 10 through the valve 40 on the opening 11 and is then transported to the heating element 21 via the air pump 24 and pipe 25. Meanwhile, the heated air near the heating element 21 is also discharged outside the housing 10 through the valve 40 on the opening 11. However, when multiple openings 11 are provided on the housing 10, some openings 11 can be positioned near the air pump 24, and others near the heating element 21. This arrangement ensures that the path of normal-temperature air entering the air pump 24 and the path of hot air leaving the housing 10 do not overlap, guaranteeing that the temperature of the air entering the air pump 24 is not affected by the hot air inside the housing 10, further improving heat dissipation efficiency.

[0054] Furthermore, in one embodiment of this utility model, when the temperature sensor 22 senses that the temperature inside the housing 10 is lower than the second threshold, it sends a third control signal to the controller 23; after receiving the third control signal, the controller 23 sends a fourth control signal to the drive mechanism 30; after receiving the fourth control signal, the drive mechanism 30 controls the valve 40 to close, so as to isolate the inside of the housing 10 from the outside; and when the controller 23 receives the third control signal, the controller 23 controls the air pump 24 to stop working.

[0055] Understandably, when the temperature sensed by the temperature sensor 22 is lower than the second threshold, it means that the temperature inside the housing 10 and the temperature of the heating element 21 are both within a reasonable range, and there is no need to cool down the heating element 21. At this time, the controller 23 drives the valve 40 to close and shuts down the air pump 24 to stop cooling the heating element 21 and ensure the sealing of the entire housing 10.

[0056] Furthermore, in one embodiment of this utility model, the drive mechanism 30 includes a motor 31 and a drive member 32 connected to the motor 31; the valve 40 includes a drive part 41 and a connecting part 42 connected to the drive part 41. The drive part 41 is disposed inside the housing 10, and the connecting part 42 is disposed inside the opening 11. A venting groove is provided on the side wall of the connecting part 42, and a venting cavity communicating with the inside of the housing 10 is provided on the valve 40. The venting groove and the venting cavity are connected. The drive member 32 drives the valve 40 to move along the axial direction of the opening 11 so that the venting groove extends into or out of the opening 11, thereby realizing the closing and opening of the valve 40.

[0057] Understandably, the drive element 32 can be a lifting rod connected to the valve 40. The motor 31 can control the lifting rod to move along the axis of the opening 11, thereby pulling the valve 40 to move along the axis of the opening 11, so that the vent groove extends into or out of the opening 11, thus achieving the closing and opening of the valve 40. The drive element 32 can also be a gear, with the drive part 41 being a gear meshing with the drive element 32. The connecting part 42 is threadedly connected to the wall of the opening 11. The motor 31 controls the rotation of the drive element 32, which in turn drives the rotation of the drive part 41. When the drive part 41 rotates, because the connecting part 42 is threadedly connected to the wall of the opening 11, the rotation of the drive part 41 will cause the entire valve 40 to move up and down along the axis. Of course, the drive element 32 can also control the movement of the valve 40 along the axis of the opening 11 in other ways, which is not limited here.

[0058] Furthermore, in one embodiment of this utility model, the driving member 32 includes a control lever 321 and steel balls 322 spaced apart on the control lever 321; the driving part 41 is a gear, and the spacing and size of the steel balls 322 match the tooth grooves of the gear so that the steel balls 322 and the gear mesh; the connecting part 42 and the opening 11 are threadedly connected; the motor 31 drives the control lever 321 to move, thereby causing the steel balls 322 to drive the driving part 41 to rotate around the axial direction.

[0059] Understandably, during the opening and closing of valve 40, valve 40 not only rotates along the axial direction but also moves up and down along the axial direction. If the drive component 32 is configured as a gear, friction will occur between the drive component 32 and the drive unit 41 due to the up-and-down movement of valve 40 along the axial direction. However, by configuring the drive component 32 as a control lever 321 and a steel ball 322, the movement of the control lever 321 causes the steel ball 322 to drive the drive unit 41 to rotate around the axial direction, generating rolling friction between the steel ball 322 and the tooth groove wall, thereby reducing frictional loss between the two.

[0060] Furthermore, in one embodiment of the present invention, the valve 40 is provided with a closing part 46 at the end away from the drive part 41. The closing part 46 extends radially from the outer wall of the connecting part 42, and the diameter of the closing part 46 is greater than or equal to the diameter of the opening 11.

[0061] Understandably, by providing a sealing part 46 on the valve 40, the sealing part 46 can block the opening 11 when the valve 40 is closed, thus further improving the sealing effect.

[0062] Furthermore, in one embodiment of the present invention, the housing 10 is provided with a cylindrical connecting wall 12 protruding inward, and an opening 11 is formed in the connecting wall 12.

[0063] Understandably, by providing a cylindrical connecting wall 12 on the housing 10, the depth of the opening 11 is increased, the length of the threaded connection between the opening 11 and the connecting part 42 is increased, and the stability of the connection between the opening 11 and the connecting part 42 is also improved.

[0064] Furthermore, in one embodiment of the present invention, the drive part 41 is provided with a connecting groove 411 around the connecting part 42 on the side facing the opening 11. The size of the connecting groove 411 matches the size of the connecting wall 12 so that when the valve 40 is opened, the connecting wall 12 is partially accommodated in the connecting groove 411.

[0065] Understandably, by providing a connecting groove 411 around the connecting part 42 on the side of the drive part 41 facing the opening 11, interference between the movement between the connecting wall 12 and the drive part 41 is prevented during the opening of the valve 40.

[0066] Furthermore, in one embodiment of this utility model, a partition 47 is provided in the ventilation cavity, which divides the ventilation cavity into a first ventilation cavity 431 and a second ventilation cavity 432 that are spaced apart. The ventilation groove includes a first ventilation groove 421 and a second ventilation groove 422 that are spaced apart. The first ventilation cavity 431 and the first ventilation groove 421 are connected to form a first ventilation channel 44, and the second ventilation cavity 432 and the second ventilation groove 422 are connected to form a second ventilation channel 45. When the valve 40 is opened, outside air enters the air pump 24 through the second ventilation channel 45, and the gas inside the housing 10 is discharged from the housing 10 through the first ventilation channel 44, so as to realize the gas circulation inside and outside the housing 10.

[0067] Understandably, by providing a spacer 47 on the valve 40, two ventilation channels are formed on one valve 40. Normal-temperature air can enter the air pump 24 through the second ventilation channel 45, while high-temperature gas inside the housing 10 can exit the housing 10 through the first ventilation channel 44. The path of normal-temperature air entering the air pump 24 and the path of high-temperature air leaving the housing 10 do not overlap, ensuring that the temperature of the air entering the air pump 24 is not affected by the high-temperature air inside the housing 10, further improving heat dissipation efficiency. Preferably, the spacer 47 is a partition plate passing through the axis of the ventilation cavity; the first ventilation channel 44 and the second ventilation channel 45 are respectively located at opposite ends of the partition plate.

[0068] Furthermore, in one embodiment of this utility model, the temperature sensor 22 is disposed within the heating element 21.

[0069] Understandably, by placing the temperature sensor 22 inside the heating element 21, the temperature of the heating element 21 can be sensed immediately, thus improving temperature control efficiency.

[0070] Furthermore, in one embodiment of this utility model, the heating element 21 and the pipe 25 are arranged side by side and in contact. It can be understood that by arranging the heating element 21 and the pipe 25 side by side and in contact, the room temperature air flowing out of the pipe 25 can cool the heating element 21 immediately, further improving the heat dissipation efficiency.

[0071] This utility model also provides a charging gun, which includes the aforementioned cooling system 100, a housing 10 (gun shell), and a heating element 21 (power pin). The specific structure of the charging gun in this application is as described in the above embodiments. Since this charging gun adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0072] This utility model also provides a charging socket, which is equipped with the aforementioned cooling system 100, a housing 10 serving as the outer shell of the charging socket, and a heating element 21 serving as a power socket. The specific structure of the charging socket in this application refers to the above embodiments. Since this charging socket adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0073] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

[0074] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A cooling system (100) comprising a housing (10) and a heating element (21), a temperature sensor (22), a controller (23) and a driving mechanism (30) arranged in the housing (10), characterized in that: an opening (11) is arranged on the housing (10), and a valve (40) is arranged on the opening (11); the temperature sensor (22) senses the temperature in the housing (10) and sends a first control signal to the controller (23) when the temperature exceeds a first threshold value; the controller (23) sends a second control signal to the driving mechanism (30) after receiving the first control signal; the driving mechanism (30) controls the valve (40) to open to communicate the inside of the housing (10) with the outside after receiving the second control signal.

2. Cooling system (100) according to claim 1, characterized in that a gas pump (24) and a pipeline (25) are further arranged in the housing (10), one end of the pipeline (25) communicates with the gas pump (24), and the other end of the pipeline (25) is arranged near the heating element (21), the gas pump (24) is connected with the controller (23); the controller (23) controls the gas pump (24) to work to deliver air to the heating element (21) after receiving the first control signal.

3. A cooling system (100) as claimed in claim 2, characterized in that the temperature sensor (22) sends a third control signal to the controller (23) when sensing that the temperature in the housing (10) is lower than a second threshold value; the controller (23) sends a fourth control signal to the driving mechanism (30) after receiving the third control signal, the driving mechanism (30) controls the valve (40) to close to isolate the inside of the housing (10) from the outside after receiving the fourth control signal, and the controller (23) controls the gas pump (24) to stop working after receiving the third control signal.

4. A cooling system (100) as claimed in claim 2, characterized in that the driving mechanism (30) comprises a motor (31) and a driving member (32) connected with the motor (31); the valve (40) comprises a driving part (41) arranged in the housing (10) and a connecting part (42) connected with the driving part (41), and the connecting part (42) is arranged in the opening (11); an air passage is arranged on the side wall of the connecting part (42), and an air cavity communicating with the inside of the housing (10) is arranged on the valve (40), and the air passage and the air cavity communicate with each other; wherein the driving member (32) drives the valve (40) to move along the axis direction of the opening (11) to make the air passage extend into or out of the opening (11) to realize the closing and opening of the valve (40).

5. A cooling system (100) as claimed in claim 4, characterized in that the driving member (32) comprises a control rod (321) and steel balls (322) arranged on the control rod (321) at intervals; the driving part (41) is a gear, and the steel balls (322) are arranged at intervals and have sizes matching the gear teeth to make the steel balls (322) engage with the gear; the connecting part (42) and the opening (11) are threadedly connected. The motor (31) drives the control rod (321) to move, and then the steel ball (322) drives the driving part (41) to rotate around the axis.

6. A cooling system (100) as claimed in claim 5, characterized in that The valve (40) is further provided with a closing part (46) away from one end of the driving part (41), the closing part (46) is radially extended from the outer wall of the connecting part (42), and the diameter of the closing part (46) is greater than or equal to the diameter of the opening (11).

7. A cooling system (100) as claimed in claim 6, characterized in that The shell (10) is inwardly convexly provided with a cylindrical connecting wall (12), and the opening (11) is formed in the connecting wall (12).

8. A cooling system (100) as claimed in claim 7, characterized in that The driving part (41) is provided with a connecting groove (411) around the connecting part (42) on the side facing the opening (11), and the size of the connecting groove (411) matches the size of the connecting wall (12), so that when the valve (40) is opened, the connecting wall (12) is partially accommodated in the connecting groove (411).

9. A cooling system (100) as claimed in claim 8, characterized in that The ventilation cavity is provided with a spacing part (47), the spacing part (47) separates the ventilation cavity into a first ventilation cavity (431) and a second ventilation cavity (432) arranged at intervals, the ventilation groove includes a first ventilation groove (421) and a second ventilation groove (422) arranged at intervals, the first ventilation cavity (431) and the first ventilation groove (421) are communicated to form a first ventilation passage (44), and the second ventilation cavity (432) and the second ventilation groove (422) are communicated to form a second ventilation passage (45); when the valve (40) is opened, external air enters the air pump (24) from the second ventilation passage (45), and the gas in the shell (10) is discharged from the shell (10) through the first ventilation passage (44), so as to realize the gas flow between the shell (10) and the outside of the shell (10).

10. A cooling system (100) as claimed in claim 9, characterized in that The spacing part (47) is a spacing plate passing through the axis of the ventilation cavity, and the first ventilation passage (44) and the second ventilation passage (45) are arranged at opposite ends of the spacing plate.

11. A cooling system (100) as claimed in claim 1, characterized in that The temperature sensor (22) is arranged in the heating element (21).

12. A cooling system (100) as claimed in claim 2, characterized in that The heating element (21) and the pipeline (25) are arranged in parallel and in contact.

13. A charging gun, characterized in that The charging gun is provided with the cooling system (100) according to any one of claims 1-12, the shell (10) is a gun shell, and the heating element (21) is a power pin.

14. A charging socket, characterized by The charging socket is provided with the cooling system (100) according to any one of claims 1-12, the shell (10) is a charging socket shell, and the heating element (21) is a power jack.

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