Cooling system, charging gun and charging socket

Abstract

The invention 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 internal temperature of the cooling system is kept within a reasonable range.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy charging connectors, and in particular to a cooling system, a charging gun and a charging socket. Background Art

[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 also increasing. At present, the cooling system of high-power DC charging guns and charging sockets uses liquid cooling. The liquid cooling system and liquid cooling circuit are expensive, which greatly increases the cost. High-power connectors that use air heat dissipation and air cooling have the problem of not being able to take into account both ventilation and sealing. Summary of the invention

[0003] The main purpose of the present invention is to propose a cooling system, a charging gun and a charging socket, aiming to solve the problem that ventilation and sealing cannot be taken into account when the charging connector is cooled by air heat dissipation or air cooling.

[0004] To achieve the above object, the present invention provides a cooling system, comprising a housing and a heating element, a temperature sensor, a controller and a driving mechanism arranged in the housing.

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

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

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

[0008] After receiving the second control signal, the driving mechanism controls the valve to open so that the inside of the housing communicates with the outside.

[0009] Optionally, in one embodiment of the present invention, an air pump and a pipeline are further provided in the housing, one end of the pipeline is connected to the air pump, the other end of the pipeline is arranged adjacent to 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 an 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 driving mechanism; after receiving the fourth control signal, the driving mechanism controls the valve to close so as to isolate the inside of the shell from the outside world; 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 member connected to the motor;

[0014] The valve comprises a driving part and a connecting part connected to the driving part, the driving part is arranged in the housing, and the connecting part is arranged in the opening;

[0015] A ventilation groove is provided on the side wall of the connecting portion, a ventilation cavity connected to the shell is provided on the valve, and the ventilation groove is connected to the ventilation cavity;

[0016] Wherein, the driving member drives the valve to move along the opening axis direction so that the ventilation groove extends into or out of the opening to realize the closing and opening of the valve.

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

[0018] The driving part is a gear, and the spacing and size of the steel balls match the tooth grooves of the gear so that the steel balls mesh with the gear;

[0019] The connecting portion is threadedly connected to the opening;

[0020] The motor drives the control rod to move, thereby causing the steel ball to drive the driving part to rotate around the axial direction.

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

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

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

[0024] Optionally, in one embodiment of the present invention, a partition portion is provided in the ventilation cavity, the partition portion 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 from the second ventilation channel, and the gas in the shell is discharged from the first ventilation channel to realize gas circulation inside and outside the shell.

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

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

[0027] Optionally, in an embodiment of the present invention, the heating element and the pipe are arranged in parallel and in contact with each other.

[0028] The present invention further provides a charging gun, wherein the charging gun is provided with the above-mentioned cooling system, the shell is a gun shell, and the heating element is a power pin.

[0029] The present invention further provides a charging socket, wherein the charging socket is provided with the above-mentioned cooling system, the shell is a charging socket shell, and the heating element is a power socket.

[0030] The charging system of the present invention is provided with an opening on the cooling system shell, and a valve is provided on the opening. When the temperature inside the shell exceeds a first threshold value, the controller controls the driving mechanism to drive the valve to open so that the inside of the shell is connected with the outside, thereby realizing heat dissipation inside the cooling system and keeping the internal temperature of the cooling system within a reasonable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 It is a schematic structural diagram of an embodiment of a cooling system of the present invention;

[0033] Figure 2 A schematic diagram of module connection of a cooling system according to an embodiment of the present invention;

[0034] Figure 3 It is a structural schematic diagram of an embodiment of the opening of the cooling system of the present invention;

[0035] Figure 4 This is a schematic diagram of a three-dimensional structure of a valve of the present invention;

[0036] Figure 5 It is a front view of the valve of the present invention;

[0037] Figure 6 for Figure 5 Sectional view along AA;

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure of another embodiment of the valve of the present invention.

[0039] Description of Figure Numbers:

[0040] 100. Cooling system; 10. Shell; 11. Opening; 12. Connecting wall; 21. Heating element; 22. Temperature sensor; 23. Controller; 24. Air pump; 25. Pipeline; 30. Driving mechanism; 31. Motor; 32. Driving member; 321. Control rod; 322. Steel ball; 40. Valve; 41. Driving part; 411. Connecting groove; 42. Connecting part; 421. First ventilation groove; 422. Second ventilation groove; 431. First ventilation cavity; 432. Second ventilation cavity; 44. First ventilation channel; 45. Second ventilation channel; 46. Closing part; 47. Spacer.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] 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.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[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 also increasing. At present, the cooling system of high-power DC charging guns and charging sockets uses liquid cooling. The liquid cooling system and liquid cooling circuit are expensive, which greatly increases the cost. High-power connectors that use air heat dissipation and air cooling have the problem of not being able to take into account both ventilation and sealing.

[0046] In view of this, the present invention proposes a charging system, which provides an opening on the cooling system shell and a valve on the opening. When the temperature inside the shell exceeds a first threshold, the controller controls the driving mechanism to drive the valve to open so that the inside of the shell is connected with the outside world, thereby realizing heat dissipation inside the cooling system and keeping the internal temperature of the cooling system within a reasonable range.

[0047] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0048] like Figure 1-7 As shown, the present invention proposes a cooling system 100, including a shell 10 and a heating element 21, a temperature sensor 22, a controller 23 and a driving mechanism 30 arranged in the shell 10; the shell 10 is provided with an opening 11, and the opening 11 is provided with a valve 40; the temperature sensor 22 senses the temperature inside the shell 10, and when the temperature exceeds a first threshold, a first control signal is sent to the controller 23; after receiving the first control signal, the controller 23 sends a second control signal to the driving mechanism 30; after receiving the second control signal, the driving mechanism 30 controls the valve 40 to open, so that the inside of the shell 10 is connected with the outside.

[0049] It is understandable that the cooling system 100 is provided with a housing 10, and a heating element 21 is provided in the housing 10. The heating element 21 generates a large amount of heat when in use, and the air inside the housing 10 absorbs the heat from the heating element 21, so that the air temperature inside the housing 10 increases. An opening 11 is provided on the housing 10, and a valve 40 is provided on the opening 11. A temperature sensor 22, a controller 23 and a driving structure are also provided in the housing 10. The temperature sensor 22 can sense the temperature inside the housing 10. When the temperature exceeds a first threshold, a first control signal is sent to the controller 23. After receiving the first control signal, the controller 23 sends a second control signal to the driving mechanism 30. After receiving the second control signal, the driving mechanism 30 controls the valve 40 to open, and the air inside the housing 10 that has risen goes out from the valve 40, and the air at normal temperature enters the housing 10 from the valve 40, so as to achieve heat dissipation inside the cooling system 100, so that the temperature inside the cooling system 100 is kept within a reasonable range. It is understandable that the temperature sensor 22 can send a signal to the controller 23 in a wired or wireless manner. The controller 23 may also send a signal to the drive mechanism 30 by wire or wireless means. It is understandable that the drive mechanism 30 and the valve 40 may be opened and closed in various forms. For example, the valve 40 may be set as a flat plate that can cover the opening 11. The drive mechanism 30 may control the telescopic arm to translate in the direction of the axis of the vertical opening 11 through the cylinder, the motor 31, etc., and then drive the valve 40 to translate in the direction of the axis of the vertical opening 11 to realize the opening and closing of the valve 40; or the valve 40 may be a sealing member hinged to the opening 11 of the housing 10, and the valve 40 may be controlled by the drive mechanism 30 to rotate around the hinge to realize the opening and closing of the valve 40. Of course, the drive mechanism 30 may also cooperate with the valve 40 in other ways to realize the opening and closing of the valve 40, which is not limited here.

[0050] It is understandable that the number of openings 11 may be one or more. Preferably, when the number of openings 11 is more than one, an independent valve 40 may be provided at each opening 11. The opening and closing of the plurality of valves 40 is controlled by the driving mechanism 30 to achieve control of the sealing of the entire housing 10. By providing a plurality of openings 11, the contact surface between the gas inside the housing 10 and the gas 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 in the shell 10, one end of the pipe 25 is connected to the air pump 24, and the other side of the pipe 25 is arranged adjacent to the heating element 21, and 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 so as to deliver air to the heating element 21.

[0052] It can be understood that when the temperature inside the shell 10 exceeds the first threshold, the controller 23 controls the driving mechanism 30 to open the valve 40, and the inside of the shell 10 is connected with the outside of the shell 10. At the same time, the controller 23 controls the air pump 24 to work, and the gas at the normal temperature outside the shell 10 enters the air pump 24 through the valve 40. The air pump 24 compresses the gas at the normal temperature to generate high-pressure gas, and transports the high-pressure gas to the heating element 21 through the pipeline 25. Since the temperature of the heating element 21 is higher than the air temperature outside the shell 10, the high-pressure gas absorbs the temperature on the heating element 21 at the heating element 21 and becomes high-temperature gas. The high-temperature gas will gather near the heating element 21, flow in the shell 10, and be discharged to the outside of the shell 10 through the opening 11, thereby realizing the heat dissipation of the heating element 21.

[0053] It can be understood that when only one opening 11 is provided on the housing 10, the normal temperature gas outside the housing 10 enters the housing 10 through the valve 40 on the opening 11 and is transported to the heating element 21 through the air pump 24 through the pipe 25; and the heated air near the heating element 21 will also be discharged to the outside of the housing 10 through the valve 40 on the opening 11. When multiple openings 11 are provided on the housing 10, some of the openings 11 can be provided near the air pump 24, and other openings 11 can be provided near the heating element 21. In this way, the route of the normal temperature air entering the air pump 24 and the route of the high temperature air leaving the housing 10 do not overlap, which ensures that the temperature of the air entering the air pump 24 will not be affected by the high temperature air in the housing 10, and further improves the heat dissipation efficiency.

[0054] Furthermore, in one embodiment of the present invention, when the temperature sensor 22 senses that the temperature inside the shell 10 is lower than the second threshold value, 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 shell 10 from the outside world; and when the controller 23 receives the third control signal, the controller 23 controls the air pump 24 to stop working.

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

[0056] Furthermore, in one embodiment of the present invention, the driving mechanism 30 includes a motor 31 and a driving member 32 connected to the motor 31; the valve 40 includes a driving portion 41 and a connecting portion 42 connected to the driving portion 41, the driving portion 41 is arranged in the shell 10, and the connecting portion 42 is arranged in the opening 11; a ventilation groove is provided on the side wall of the connecting portion 42, and a ventilation cavity connected to the shell 10 is provided on the valve 40, and the ventilation groove and the ventilation cavity are connected; wherein the driving member 32 drives the valve 40 to move along the axial direction of the opening 11, so that the ventilation groove extends into or out of the opening 11, so as to realize the closing and opening of the valve 40.

[0057] It can be understood that the driving member 32 can be a telescopic rod connected to the valve 40, and the motor 31 can control the telescopic rod to move along the axial direction of the opening 11 to pull 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, so as to achieve the closing and opening of the valve 40. The driving member 32 can also be a gear, and the driving part 41 is a gear meshed with the driving member 32. The connecting part 42 is threadedly connected to the wall of the opening 11. The rotation of the driving member 32 is controlled by the motor 31, and then the rotation of the driving part 41 is driven. When the driving part 41 rotates, since the connecting part 42 is threadedly connected to the wall of the opening 11, the rotation of the driving part 41 will drive the entire valve 40 to move up and down along the axial direction. Of course, the driving member 32 can also control the movement of the valve 40 along the axial direction of the opening 11 in other ways, which is not limited here.

[0058] Furthermore, in one embodiment of the present invention, the driving member 32 includes a control rod 321 and steel balls 322 spaced apart on the control rod 321; the driving portion 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 are meshed; the connecting portion 42 is threadedly connected to the opening 11; the motor 31 drives the control rod 321 to move, thereby causing the steel balls 322 to drive the driving portion 41 to rotate around the axial direction.

[0059] It is understandable that during the process of opening and closing the valve 40, the valve 40 not only rotates along the axis direction, but also moves up and down along the axis direction. At this time, if the driving member 32 is set in the form of a gear, since the valve 40 moves up and down along the axis direction, friction will be generated between the driving member 32 and the driving part 41. If the driving member 32 is set in the form of a control rod 321 and a steel ball 322, the movement of the control rod 321 will cause the steel ball 322 to drive the driving part 41 to rotate around the axis, and rolling friction will be generated between the steel ball 322 and the tooth groove wall, thereby reducing the friction loss between the two.

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

[0061] It can be understood that by providing the closing portion 46 on the valve 40 , when the valve 40 is closed, the closing portion 46 can block the opening 11 , thereby 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 inwardly, and an opening 11 is formed in the connecting wall 12 .

[0063] It can be understood that by providing the cylindrical connecting wall 12 on the housing 10 , on the one hand, the depth of the opening 11 is increased, and the length of the threaded connection between the opening 11 and the connecting portion 42 is increased, and on the other hand, the stability of the connection between the opening 11 and the connecting portion 42 is also improved.

[0064] Furthermore, in one embodiment of the present invention, a connecting groove 411 is provided around the connecting portion 42 on the side of the driving portion 41 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, a portion of the connecting wall 12 is accommodated in the connecting groove 411.

[0065] It can be understood that by providing a connection groove 411 around the connection portion 42 on the side of the driving portion 41 facing the opening 11 , interference between the movement of the connection wall 12 and the driving portion 41 can be prevented during the opening of the valve 40 .

[0066] Furthermore, in one embodiment of the present invention, a partition portion 47 is provided in the ventilation cavity, and the partition portion 47 divides the ventilation cavity into a first ventilation cavity 431 and a second ventilation cavity 432 which are spaced apart, and the ventilation grooves include a first ventilation groove 421 and a second ventilation groove 422 which are spaced apart, and 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 from the second ventilation channel 45, and the gas in the shell 10 is discharged from the shell 10 from the first ventilation channel 44, so as to realize the gas circulation inside and outside the shell 10.

[0067] It can be understood that by providing the spacer 47 on the valve 40, two ventilation channels are formed on one valve 40, and the air at normal temperature outside can enter the air pump 24 from the second ventilation channel 45, and the high-temperature gas in the shell 10 can be discharged from the shell 10 from the first ventilation channel 44. The route of the air at normal temperature entering the air pump 24 and the route of the high-temperature air leaving the shell 10 do not overlap, ensuring that the temperature of the air entering the air pump 24 will not be affected by the high-temperature air in the shell 10, further improving the 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 arranged at opposite ends of the partition plate.

[0068] Furthermore, in one embodiment of the present invention, the temperature sensor 22 is disposed in the heating element 21 .

[0069] It can be understood that by arranging the temperature sensor 22 in the heating element 21, the temperature of the heating element 21 can be sensed immediately, thereby improving the temperature control efficiency.

[0070] Further, in one embodiment of the present invention, the heating element 21 and the pipe 25 are arranged in parallel and in contact with each other. It can be understood that by arranging the heating element 21 and the pipe 25 in parallel and in contact with each other, the normal temperature air can cool down the heating element 21 immediately after flowing out of the pipe 25, thereby further improving the heat dissipation efficiency.

[0071] The present invention further provides a charging gun, which is provided with the above-mentioned cooling system 100, the housing 10 is a gun shell, and the heating element 21 is a power pin. The specific structure of the charging gun of the present application refers to the above-mentioned embodiment. Since the present charging gun adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0072] The present invention further provides a charging socket, the charging socket is provided with the above cooling system 100, the housing 10 is the charging socket shell, and the heating element 21 is the power jack. The specific structure of the charging socket of the present application refers to the above embodiment. Since the present charging socket adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0073] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

[0074] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

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: The housing (10) is provided with an opening (11), and the opening (11) is provided with a valve (40); The temperature sensor (22) senses the temperature inside the housing (10), and when the temperature exceeds a first threshold, 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 driving mechanism (30); After receiving the second control signal, the driving mechanism (30) controls the valve (40) to open, so that the interior of the housing (10) is connected to the outside.

2. The cooling system (100) according to claim 1, characterized in that: An air pump (24) and a pipe (25) are also provided in the housing (10); one end of the pipe (25) is connected to the air pump (24); the other end of the pipe (25) is arranged adjacent to the heating element (21); and 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 operate so as to deliver air to the heating element (21).

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

4. A cooling system (100) according to claim 2, characterized in that: The driving mechanism (30) comprises a motor (31) and a driving member (32) connected to the motor (31); The valve (40) comprises a driving part (41) and a connecting part (42) connected to the driving part (41), wherein the driving part (41) is arranged in the housing (10), and the connecting part (42) is arranged in the opening (11); A ventilation groove is formed on the side wall of the connecting portion (42); a ventilation cavity communicating with the inside of the housing (10) is formed on the valve (40); and the ventilation groove is communicated with the ventilation cavity; The driving member (32) drives the valve (40) to move along the axial direction of the opening (11), so that the ventilation groove extends into or out of the opening (11), thereby realizing the closing and opening of the valve (40).

5. A cooling system (100) according to claim 4, characterized in that: The driving member (32) comprises a control rod (321) and steel balls (322) arranged at intervals on the control rod (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) are meshed with the gear; The connecting portion (42) and the opening (11) are threadedly connected; The motor (31) drives the control rod (321) to move, thereby causing the steel ball (322) to drive the driving part (41) to rotate around the axial direction.

6. A cooling system (100) according to claim 5, characterized in that: A closing portion (46) is also provided at one end of the valve (40) away from the driving portion (41). The closing portion (46) radially extends from the outer wall of the connecting portion (42). The diameter of the closing portion (46) is greater than or equal to the diameter of the opening (11).

7. A cooling system (100) according to claim 6, characterized in that: The housing (10) is provided with a cylindrical connecting wall (12) protruding inwardly, and the opening (11) is formed in the connecting wall (12).

8. A cooling system (100) according to claim 7, characterized in that: A connecting groove (411) is provided around the connecting portion (42) on one side of the driving portion (41) 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, a portion of the connecting wall (12) is accommodated in the connecting groove (411).

9. A cooling system (100) according to claim 8, characterized in that: A partition (47) is provided in the ventilation cavity, and the partition (47) divides the ventilation cavity into a first ventilation cavity (431) and a second ventilation cavity (432) which are arranged at intervals. The ventilation groove comprises a first ventilation groove (421) and a second ventilation groove (422) which are arranged at intervals. 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) from the second ventilation channel (45), and the gas in the shell (10) is discharged from the shell (10) from the first ventilation channel (44), so as to realize the gas circulation inside the shell (10) and outside the shell (10).

10. A cooling system (100) according to claim 9, characterized in that: The partition portion (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 arranged at opposite ends of the partition plate.

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

12. A cooling system (100) according to claim 2, characterized in that: The heating element (21) and the pipe (25) are arranged in parallel and in contact with each other.

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

14. A charging socket, characterized in that: The charging socket is provided with a cooling system (100) as claimed in any one of claims 1 to 12, the shell (10) is a charging socket shell, and the heating element (21) is a power socket.

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