Charging terminal heat dissipation device and charging gun

Abstract

The utility model relates to the technical field of charging guns, and discloses a charging terminal heat dissipation device, which comprises a heat dissipation assembly sleeved on the outer surface of a contact pin and a fan assembly connected to the heat dissipation assembly, the heat dissipation assembly comprises an insulating heat conduction piece wrapping the surface of the contact pin, a heat dissipation sheet wrapping the outer surface of the insulating heat conduction piece and a heat dissipation support used for fixing the heat dissipation sheet, an inner cavity of the heat dissipation support is provided with an air channel, the air channel comprises an air outlet and at least one air inlet, and the fan assembly is arranged at the air outlet. The utility model further discloses a charging gun comprising the charging terminal heat dissipation device. The purpose of the utility model is to reduce the working temperature of the contact pin, so that the charging gun can be overloaded with larger current under the condition that the charging gun uses a cable with the same specification, thereby improving the charging efficiency under the condition that the cost is not increased.

Description

Technical Field

[0001] The utility model relates to the technical field of charging guns, and in particular to a charging terminal heat dissipation device and a charging gun. Background Art

[0002] With the introduction of national energy-saving and emission reduction policies and the continuous advancement of science and technology, new energy vehicles have gradually entered thousands of households. When new energy vehicles are in use, they need to be charged, and the charging gun is a special device for charging new energy vehicles.

[0003] As the number of new energy vehicles continues to increase, the number of charging stations and charging piles is also increasing, but the growth rate is far less than that of new energy vehicles. In order to improve charging efficiency and shorten charging time, the market demand for high-power charging guns continues to increase. However, when charging a high-power charging gun, the charging current will be limited due to the high temperature of the pin, thereby reducing the charging efficiency. If you want to increase the charging current, you need to increase the pin size and cable specifications, which will increase the cost. In addition, high temperature will increase the air pressure in the original gun shell, which may pose a risk of gun explosion. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problem and provide a charging terminal heat dissipation device for reducing the temperature of the pin during operation, so that the charging gun can overload a larger current when using cables of the same specifications, thereby improving the charging efficiency without increasing the cost.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a charging terminal heat dissipation device, including a heat dissipation component sleeved on the outer surface of the pin and a fan component connected to the heat dissipation component, the heat dissipation component includes an insulating heat conductive part coated on the surface of the pin, a heat sink coated on the outer surface of the insulating heat conductive part and a heat dissipation bracket for fixing the heat sink, the inner cavity of the heat dissipation bracket is provided with an air duct, the air duct includes an air outlet and at least one air inlet, and the fan assembly is arranged at the air outlet.

[0006] As an improvement, the heat dissipation bracket is a split structure, and the heat dissipation bracket includes a heat dissipation bracket A and a heat dissipation bracket B. The heat dissipation bracket A is located at the charging end of the pin, and the heat dissipation bracket B is located at the copper wire crimping end of the pin.

[0007] As an improvement, heat sink waterproof rings are provided at both ends of the heat sink, and the heat sink waterproof rings cover the end surfaces of the heat sink and the insulating heat conductive member at the same time.

[0008] As an improvement, the insulating heat-conducting component is a ceramic component.

[0009] As an improvement, thermally conductive silicone is injected into the gap between the pin and the insulating heat-conducting member.

[0010] As an improvement, the heat dissipation bracket B is provided with a connecting seat at one end through which the cable passes, the convex end of which is used to fix the fan male seat, and the concave end is used to connect to the fan pin header, so that the fan male seat and the fan pin header are stably connected to achieve stable power supply to the fan, and a fan pin header waterproof ring is installed on the fan pin header.

[0011] As an improvement, the top of the heat dissipation bracket B is provided with an electronic lock socket mounting hole for mounting an electronic lock socket.

[0012] As an improvement, a heat dissipation bracket waterproof ring and EVA are respectively installed on the outer edges of both ends of the heat dissipation bracket, the heat dissipation bracket waterproof ring is located at the charging end, and the EVA is located at the cable connection end.

[0013] Another object of the utility model is to provide a charging gun, which has a heat dissipation function and adopts an open structure to avoid the risk of overpressure explosion of the gun. The technical solution of the utility model is: a charging gun, including the charging terminal heat dissipation device, and a plurality of air inlet holes are opened on the charging gun shell, and the air inlet holes are located outside the air inlet, so that the air duct on the charging terminal heat dissipation device is connected to the external air.

[0014] Combined with the above technical solutions, compared with the prior art, the beneficial effects of the utility model are:

[0015] The charging terminal heat dissipation device provided by the utility model dissipates the heat generated by the plug pin during the charging process to the outside through heat-conducting and heat-dissipating parts such as insulating heat-conducting parts and heat sinks, and accelerates the air circulation in the air duct through a fan assembly to discharge the heat in the air duct to the outside, thereby reducing the temperature of the plug pin during operation, so that the charging gun can be overloaded with a larger current when using cables of the same specifications, thereby improving the charging efficiency without increasing the cost.

[0016] The charging gun provided by the utility model adopts a charging terminal heat dissipation device to dissipate heat, which has a good heat dissipation effect. The gun shell is an open structure, which can avoid the risk of the gun exploding due to the increase of air pressure in the gun shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation position of the charging terminal heat dissipation device of the utility model when in use.

[0018] Figure 2 It is a schematic diagram of the installation position of the fan assembly described in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the fan assembly described in the utility model.

[0020] Figure 4 It is an exploded view of the fan assembly described in the utility model.

[0021] Figure 5 It is an exploded view of the charging terminal heat dissipation device described in the utility model.

[0022] Figure 6 It is a schematic diagram of the installation position of the heat dissipation component described in the utility model.

[0023] Figure 7 It is a schematic diagram of the internal air flow direction of the charging gun described in the utility model when it is working.

[0024] Figure 8 It is a schematic diagram of the external air flow direction when the charging gun described in the utility model is working.

[0025] Among them: 1-pin, 2-heat dissipation assembly, 21-heat dissipation bracket A, 211-heat dissipation bracket waterproof ring, 22-heat dissipation bracket B, 221-EVA, 222-electronic lock female seat, 223-fan male seat, 224-connecting seat, 225-electronic lock female seat mounting hole, 23-heat sink, 231-heat sink waterproof ring, 24-insulating thermal conductive part, 25-thermal conductive silicone, 3-fan assembly, 31-fan, 32-wire, 33-fan pin header seat, 331-fan pin header, 332-fan pin header waterproof ring, 4-cable, 41-copper wire, 5-charging gun shell, 51-air inlet, 52-air duct. DETAILED DESCRIPTION

[0026] In order to explain the technical features and the purpose and effect achieved by the present invention in detail, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Please see attached Figure 1-7 , the charging terminal heat dissipation device provided by the utility model is now described. A charging terminal heat dissipation device includes a heat dissipation component 2 sleeved on the outer surface of the pin 1 and a fan component 3 connected to the heat dissipation component 2, the heat dissipation component 2 includes an insulating heat conductive member 24 coated on the surface of the pin 1, a heat sink 23 coated on the outer surface of the insulating heat conductive member 24 and a heat dissipation bracket for fixing the heat sink 23, the inner cavity of the heat dissipation bracket is provided with an air duct 52, the air duct 52 includes an air outlet (not shown in the figure) and at least one air inlet (not shown in the figure), and the fan component 3 is arranged at the air outlet. Exemplarily, the covering range of the insulating heat conductive member 24 and the heat sink 23 covers one end of the copper wire 41 on the pin 1 for welding the charging gun, and when in use, it should also cover a section of the copper wire 41.

[0028] In the above embodiment, the heat generated by the plug pin 1 during the charging process is dissipated into the air duct 52 through the insulating heat conductor 24 and the heat sink 23. At the same time, the fan assembly 3 accelerates the air circulation in the air duct 52, discharges the heat in the air duct 52 to the outside, and reduces the working temperature of the plug pin 1. When using the same specification cable, the charging gun can be overloaded with a larger current, thereby improving the charging efficiency without increasing the cost.

[0029] Preferably, the heat dissipation bracket is a split structure, and the heat dissipation bracket includes a heat dissipation bracket A21 and a heat dissipation bracket B22, the heat dissipation bracket A21 is located at the charging end of the pin 1, and the heat dissipation bracket B22 is located at the copper wire crimping end of the pin 1.

[0030] In the above embodiment, the split heat dissipation bracket can facilitate the installation and fixation of the heat sink 23.

[0031] Preferably, heat sink waterproof rings 231 are provided at both ends of the heat sink 23 , and the heat sink waterproof rings 231 cover the end surfaces of the heat sink 23 and the insulating heat conductive member 24 at the same time.

[0032] In the above embodiment, the heat sink waterproof ring 231 is used to seal and waterproof both ends of the heat sink 23 to prevent external liquid from entering through the air duct and damaging the charging gun.

[0033] Preferably, the insulating heat-conducting member 24 is a ceramic member.

[0034] In the above embodiment, the ceramic insulating heat-conducting member can be used to isolate the pin 1 from the heat sink 23, thereby preventing the heat sink 23 from being charged and causing poor insulation withstand voltage.

[0035] Preferably, a thermally conductive silica gel 25 is injected into the gap between the plug pin 1 and the insulating heat-conducting member 24 .

[0036] In the above embodiment, adding the thermally conductive silica gel 25 in the gap between the pin 1 and the insulating heat-conducting member 24 can achieve the effects of waterproofing and insulation without affecting the heat dissipation effect.

[0037] Preferably, the heat dissipation bracket B22 is provided with a connecting seat 224 at one end through which the cable passes, wherein the convex end is used to fix the fan male seat 223, and the concave end is used to connect the fan pin seat 33, wherein the fan male seat 223 is connected to the power supply cable, and the fan pin seat 33 is used to fix the fan pin 331. During installation, the fan male seat 223 can be fixed to the convex end of the connecting seat 224 by fasteners such as screws, and the fan pin seat 33 is connected to the fan male seat 223 by plugging from the concave end of the connecting seat 224, so that the fan male seat 223 is connected to the fan pin 331, thereby realizing stable power supply to the fan 31, and a fan pin seat waterproof ring 332 is installed on the fan pin seat 33. Exemplarily, the fan 31 is installed at the air outlet of the heat dissipation bracket by a detachable connection method such as threaded connection or snap-on connection.

[0038] In the above embodiment, the fan pin 331 is connected to the power supply from the inside of the heat dissipation bracket, and the wire 32 is arranged in the inner cavity of the heat dissipation bracket without being exposed, so that the external structure of the charging terminal heat dissipation device is simpler, which is convenient for installation in the charging gun housing during use and better isolation of the air duct 52 from the internal space of the charging gun housing. The fan assembly 3 is installed on the air outlet of the heat dissipation bracket as an independent module. After the whole gun is assembled, if there is a fault or other damage, it can be easily replaced. When disassembling, just remove the fan 31 and unplug the fan pin seat 33 to remove the fan assembly 3.

[0039] Preferably, an electronic lock socket mounting hole 225 for mounting an electronic lock socket 222 is provided on the top of the heat dissipation bracket B22.

[0040] In the above embodiment, an electronic lock socket mounting hole 225 is opened on the top of the heat dissipation bracket B, which can facilitate the fixation of the electronic lock socket, while fully utilizing the internal space of the heat dissipation bracket and keeping the external structure of the charging terminal heat dissipation device neat.

[0041] Preferably, a heat dissipation bracket waterproof ring 211 and EVA221 are respectively installed on the outer edges of both ends of the heat dissipation bracket, the heat dissipation bracket waterproof ring 211 is located at the charging end, and the EVA221 is located at the cable connection end, that is, the heat dissipation bracket waterproof ring 211 is installed on the outer edge of the end surface of the heat dissipation bracket A21, and the EVA221 is installed on the outer edge of the end surface of the heat dissipation bracket B22.

[0042] In the above embodiment, installing a heat dissipation bracket waterproof ring 211 on the outer edge of the end face of the heat dissipation bracket A21 can waterproof the charging end, and installing EVA221 on the outer edge of the end face of the heat dissipation bracket B22 can waterproof and insulate the heat dissipation bracket and the inside of the charging gun shell to prevent the internal temperature of the charging gun shell from being too high.

[0043] like Figure 1-8As shown, the utility model also provides a charging gun, including the charging terminal heat dissipation device, and a plurality of air inlet holes 51 are opened on the charging gun shell 5, and the air inlet holes 51 are located outside the air inlet, so that the air duct 52 on the charging terminal heat dissipation device is connected to the external air.

[0044] In the above embodiment, the charging gun adopts a charging terminal heat dissipation device for heat dissipation, which can improve the heat dissipation effect during charging. At the same time, the interior of the charging gun shell 5 is connected to the outside through the air inlet 51, so that the charging gun has an open structure, which can further avoid the risk of explosion of the gun due to the increase of air pressure in the gun shell.

[0045] It should be noted that the various embodiments in the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0046] The utility model and its implementation methods are described in detail above, and such description is not restrictive. The drawings show only some implementation methods of the utility model, and the actual structure is not limited thereto. Ordinary technicians in this field can be inspired by it and make various modifications, improvements and substitutions without departing from the concept of the utility model, which should all belong to the protection scope of the utility model.

Claims

1. A charging terminal heat dissipation device, characterized in that: It includes a heat dissipation component sleeved on the outer surface of the pin and a fan component connected to the heat dissipation component, the heat dissipation component includes an insulating heat conductive part coated on the surface of the pin, a heat sink coated on the outer surface of the insulating heat conductive part and a heat dissipation bracket for fixing the heat sink, the inner cavity of the heat dissipation bracket is provided with an air duct, the air duct includes an air outlet and at least one air inlet, and the fan assembly is arranged at the air outlet.

2. A charging terminal heat dissipation device according to claim 1, characterized in that: The heat dissipation bracket is a split structure, and the heat dissipation bracket includes a heat dissipation bracket A and a heat dissipation bracket B. The heat dissipation bracket A is located at the charging end of the pin, and the heat dissipation bracket B is located at the copper wire crimping end of the pin.

3. A charging terminal heat dissipation device according to claim 1, characterized in that: The two ends of the heat sink are provided with heat sink waterproof rings, and the heat sink waterproof rings cover the end surfaces of the heat sink and the insulating heat conductive member at the same time.

4. A charging terminal heat dissipation device according to claim 3, characterized in that: The insulating heat-conducting component is a ceramic component.

5. A charging terminal heat dissipation device according to claim 3, characterized in that: The gap between the plug pin and the insulating heat-conducting member is filled with heat-conducting silica gel.

6. A charging terminal heat dissipation device according to claim 2, characterized in that: The heat dissipation bracket B is provided with a connecting seat at one end through which the cable passes, and its convex end is used to fix the fan male seat, and the concave end is used to connect the fan pin seat, so that the fan male seat and the fan pin seat are stably connected to achieve stable power supply to the fan, and a fan pin seat waterproof ring is installed on the fan pin seat.

7. A charging terminal heat dissipation device according to claim 2, characterized in that: The top of the heat dissipation bracket B is provided with an electronic lock socket mounting hole for mounting an electronic lock socket.

8. A charging terminal heat dissipation device according to claim 1, characterized in that: A heat dissipation bracket waterproof ring and EVA are respectively installed on the outer edges of both ends of the heat dissipation bracket, the heat dissipation bracket waterproof ring is located at the charging end, and the EVA is located at the cable connection end.

9. A charging gun, characterized in that: It comprises the charging terminal heat dissipation device as described in any one of claims 1 to 8, and a plurality of air inlet holes are opened on the charging gun shell, wherein the air inlet holes are located outside the air inlet, so that the air duct on the charging terminal heat dissipation device is connected with the external air.

Images