CN-121989721-A - Super charging gun with liquid cooling system

CN121989721ACN 121989721 ACN121989721 ACN 121989721ACN-121989721-A

Abstract

The invention discloses a super-charging gun with a liquid cooling system, relates to the technical field of charging connectors of electric automobiles, and aims to solve the problems that when outdoor temperature and humidity of the liquid cooling charging gun are alternately changed, external water vapor, dust invasion and condensed water accumulation are caused by a respiratory effect, and charging safety and connection reliability are affected. The invention dynamically counteracts the pressure fluctuation of the inner cavity of the charging gun through the cooperation of the pressure relief structure and the directional hard plate, ensures that the charging gun always maintains high-grade sealing protection in the super-charging process, is attached to the cavity groove and self-scraped along with the pressure relief structure, is free from manual maintenance and long-acting in operation, is matched with the return pipe by the impurity guiding and profile plate, realizes efficient separation and directional collection of impurities in cooling liquid, avoids the influence of impurity accumulation on the cooling efficiency and the electrical safety of the charging gun, and is mechanically compensated when the gradual change interval structure is combined with the double-flow-blocking mechanism to form double-layer sealing, so that the sealing effect and the service life of the charging gun are obviously improved by calibrating assembly errors.

Inventors

LI MUYUAN
Liang Machao
WEN PENGJING
Jiang Maoli
ZHENG YAN
LUO QING
ZHANG XIAOCHONG
PENG JIANGUO

Assignees

宁波市茂源车辆部件有限公司

Dates

Publication Date: 20260508
Application Date: 20260302

Claims (10)

1. The utility model provides a super rifle that charges with liquid cooling system, its characterized in that, including rifle main part (1) and liquid cooling system charge, cooling chamber (2) have been seted up to rifle main part (1) inside, cooling chamber (2) are connected with the liquid cooling system, cooling chamber (2) lateral wall is fixed with ring shell (3), the inside pressure relief structure (4) that are equipped with of ring shell (3), ring shell (3) have seted up cavity groove (31) that correspond with pressure relief structure (4) position, ring shell (3) outside be equipped with cooling chamber (2) fixed guide cover (5), set up on guide cover (5) with pressure relief structure (4) space intercommunication a plurality of through-holes (6); The pressure relief structure (4) comprises a pressure relief hard shell (401) and a pressure relief soft layer (402) which are connected with each other, the pressure relief soft layer (402) is made of soft bag materials, dry inert gas is pre-filled between the pressure relief hard shell (401) and the pressure relief soft layer (402), a hard plate (403) is fixed on the outer side of the pressure relief soft layer (402), and the side of the hard plate (403) and the inner wall of the cooling cavity (2) slide in a limiting mode; Be equipped with between ring shell (3) and guide housing (5) and lead impurity shaped plate (7), lead impurity shaped plate (7) limit end and guide housing (5) and paste tightly, lead impurity shaped plate (7) are last to have seted up logical groove (71), lead impurity shaped plate (7) and guide housing (5) separation when cooling liquid flows in the liquid cooling system operation in-process, lead and form a backflow passageway between impurity shaped plate (7) and guide housing (5), be equipped with back flow (8) of a plurality of intercommunication backflow passageways on charging gun main part (1).
2. The overcharge charging gun with the liquid cooling system according to claim 1, wherein a impurity filtering plate (404) for blocking impurities from entering is arranged on the other side of the hard plate (403), the impurity filtering plate (404) is attached to the cavity groove (31), and the impurity filtering plate (404) and the cavity groove (31) scrape when the pressure-relieving structure (4) is deformed by the change of the air pressure.
3. The overcharge charging gun with liquid cooling system as claimed in claim 2, wherein a nano porous ceramic coating is compounded on the periphery of the soft buffer layer (402), the surface of the coating is covered with a micron-sized sharp convex array, and the convex tips are in a cross blade shape.
4. The overcharge charging gun with the liquid cooling system according to claim 2, characterized in that the impurity-guiding shaped plate (7) comprises a convex guide section (701), the convex guide section (701) is of a V-shaped structure, the center of the convex guide section (701) is attached to the side of the guide cover (5), the inclined edge of the convex guide section (701) faces the direction opposite to the flow direction of cooling liquid, a circular ring section (702) extends on one side of the convex guide section (701), the outer side of the circular ring section (702) is matched with the inner side diameter of the annular shell (3) and is positioned in an axial center, a flow blocking section (703) is connected to one side of the circular ring section (702), and a bevel edge section (704) fixed with the cooling chamber (2) extends on one side of the flow blocking section (703).
5. The overcharge charging gun with the liquid cooling system according to claim 4, wherein the choke section (703) is of a curved structure, the choke section (703) is made of elastic materials, one side of the choke section (703) is tightly attached to the side wall of the guide cover (5), and the choke section (703) and the guide cover (5) are separated from each other to flow through the backflow channel when the bevel section (704) is pushed by the cooling liquid.
6. The overcharge charging gun with the liquid cooling system according to claim 5, wherein the guide cover (5) comprises a straight ring section (501), one side of the straight ring section (501) is connected with an inner curved arc section (502), the inner curved arc section (502) is of a structure inclined towards the direction of a bevel section (704), and the distance between the inner curved arc section (502) and the bevel section (704) is gradually decreased towards the direction of the cooling chamber (2).
7. The overcharge charging gun with liquid cooling system according to claim 6, wherein the impurity guiding shaped plate (7) is provided with a double flow blocking mechanism (9) for secondary sealing, and the double flow blocking mechanism (9) comprises a squeezing strip (91) and a double elastic ring (92).
8. The overcharge charging gun with the liquid cooling system according to claim 7, wherein the extrusion strip (91) is of an S-shaped structure as a whole, the extrusion strip (91) comprises a fixing section (911), one side of the fixing section (911) is provided with a tilting surface (912) for extruding the two-resistance elastic ring (92), one end of the fixing section (911) is provided with a concave area, and the concave area is provided with an accommodating space (913).
9. The overcharge charging gun with the liquid cooling system according to claim 8, wherein the two-resistance elastic ring (92) comprises a fixed edge section (921) fixed with the bevel edge section (704), an inner bent section (922) is connected to one side of the fixed edge section (921), the inner bent section (922) is made of elastic materials, the inner bent section (922) has reset elastic force towards the direction of the extrusion strip (91), a welt hook (923) is connected to one side of the inner bent section (922), the welt hook (923) is of a hook-shaped structure, the shape of the welt hook (923) is matched with the space of the accommodating space (913), and one side, close to the extrusion strip (91), of the welt hook (923) is set to be a pressed surface (924).
10. The super-charging gun with the liquid cooling system according to claim 9, wherein the peripheries of the choke section (703) and the welt hook (923) are adhered with a rubber layer, the end part of the return pipe (8) is provided with a valve capable of being opened and closed, and a filter screen is arranged in the return pipe (8).

Description

Super charging gun with liquid cooling system Technical Field The invention relates to the technical field of charging guns, in particular to an ultra-charging gun with a liquid cooling system. Background In the field of high-power super-charging of new energy automobiles, the liquid cooling super-charging gun is a core component for realizing high-current and high-efficiency charging. The charging gun core, the cable and the connector are subjected to real-time forced cooling through the built-in liquid cooling channel, so that the heating problem during heavy current charging is effectively solved, the charging time can be greatly shortened, the charging safety and stability are improved, and the charging gun core, the cable and the connector are widely applied to various outdoor public charging stations, high-speed service areas and high-low temperature alternate environments. However, under the outdoor environment with alternating temperature and humidity, the sealed cooling chamber of the liquid cooling charging gun has the common problem of respiratory effect, and the generation reasons are that when the temperature difference between day and night is changed, the seasons are changed, and the mountain area/field height is Wen Zhoubian, the air and the cooling liquid in the cooling chamber expand with heat and contract with cold, so that the pressure in the chamber is repeatedly increased and reduced, and the negative pressure-positive pressure alternating similar to respiratory is formed. Under the long-term frequent respiration, the gun body sealing structure is extremely easy to generate micro gaps, and outside moist air, dust and water vapor can be sucked into the cooling cavity. The existing liquid cooling overcharge charging gun is mainly focused on conventional heat dissipation and basic sealing, special structural design is not carried out aiming at the problems of micro leakage and impurity infiltration caused by respiratory effect, and the existing liquid cooling overcharge charging gun is difficult to adapt to complex and changeable outdoor environments, and the following problems can occur due to respiratory effect. Firstly, the cooling cavity is slightly leaked, repeated pressure fluctuation caused by respiratory effect can accelerate ageing and cracking of a sealing element, so that the micro leakage of cooling liquid can occur, the liquid cooling radiating effect is reduced, potential safety hazards such as insulation decline and electric leakage of a gun body can be possibly caused, secondly, internal degradation is caused by impurity infiltration, corrosion of internal components, oxidation of joints and insulation decline can be caused after external water vapor, dust and condensed water enter the cavity, abnormal charging, poor contact and long-term service can be caused, the service life is greatly shortened, and particularly in the areas with large temperature difference between spring and autumn and day and severe temperature and humidity fluctuation in mountain areas, the problem is more remarkable. In view of this, research and development of a liquid cooling system overcharge charging gun capable of inhibiting respiratory effect and preventing micro-leakage and impurity invasion becomes an urgent need for improving high-power charging reliability and safety. Disclosure of Invention The invention aims to provide an overcharge charging gun with a liquid cooling system, which aims to solve the technical problem that external water vapor, dust and condensed water are easy to enter when the temperature and the humidity of the liquid cooling charging gun are alternately changed. In order to solve the technical problems, the technical scheme is that the super-charging gun with the liquid cooling system comprises a charging gun main body and the liquid cooling system, wherein a cooling cavity is formed in the charging gun main body, the cooling cavity is connected with the liquid cooling system, a ring shell is fixed on the side wall of the cooling cavity, a pressure-relieving structure is arranged in the ring shell, a cavity groove corresponding to the pressure-relieving structure is formed in the ring shell, a guide cover fixed with the cooling cavity is arranged on the outer side of the ring shell, and a plurality of through holes for communicating the pressure-relieving structure space are formed in the guide cover; The pressure relief structure comprises a pressure relief hard shell and a pressure relief soft layer which are mutually connected, the pressure relief soft layer is made of soft bag materials, dry inert gas is pre-filled between the pressure relief hard shell and the pressure relief soft layer, a hard plate is fixed on the outer side of the pressure relief soft layer, and the side of the hard plate and the inner wall of the cooling cavity are limited and slide; The charging gun is characterized in that a hetero-guiding plate is arranged between the annular shell and th