CN114899634B - Terminal liquid cooling structure of high-power connector - Google Patents
Terminal liquid cooling structure of high-power connector Download PDFInfo
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- CN114899634B CN114899634B CN202210820266.5A CN202210820266A CN114899634B CN 114899634 B CN114899634 B CN 114899634B CN 202210820266 A CN202210820266 A CN 202210820266A CN 114899634 B CN114899634 B CN 114899634B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a terminal liquid cooling structure of a high-power connector, which relates to the technical field of electric vehicle charging and comprises: the cooling system comprises a power terminal DC + and a power terminal DC-, a rubber pipeline, cooling oil, a plastic oil tank, a sealing ring, an oil tank water nozzle, a sealing metal nut, a liquid return pipe and a storage cooling device, wherein the power terminal DC + and the power terminal DC-are installed on the plastic oil tank, an opening of the oil tank is connected with an opening of the terminal to form a cooling oil circulation passage, the power terminal DC + and the power terminal DC-are hollow and respectively a first hollow cavity and a second hollow cavity, and a first adjusting part and a second adjusting part are fixedly arranged at one end, namely the lower end, far away from the liquid return pipe in the first hollow cavity and the second hollow cavity respectively; the invention can increase the heat dissipation efficiency, realize the heat balance of the anode and the cathode of the power terminal and improve the safety in the large-current charging process.
Description
Technical Field
The invention relates to the technical field of electric automobile charging, in particular to a terminal liquid cooling structure of a high-power connector.
Background
Along with the continuous development of new forms of energy electric automobile trade, electric automobile's continuation of the journey mileage improves, and power battery capacity is bigger and bigger, needs to promote the problem that the quick charge of charging power realization solved the speed of charging. However, the charging power of the current voltage platform of the electric vehicle cannot be increased by increasing the charging voltage due to various factors, and the charging power can only be increased by increasing the charging current.
When the charging current is greatly increased to several hundred amperes, the terminals are required to carry a larger current, which causes a risk of the entire charging system, particularly the terminal portions, rapidly heating up, resulting in charging failure. For avoiding one risk, the liquid cooling cable structure that two business turn over are equipped with to often adopt big line footpath heart yearn in industry, and this kind of design has caused the rifle system dead weight of charging too big, uses inconvenient consequence, because both heat conductivities can't adjust usually, the thermal unbalance problem often appears after certain time's use moreover. Aiming at the problems, the invention provides a scheme for directly cooling oil liquid for a terminal in the large-current charging process of an electric automobile, and a scheme for realizing two inlets and two outlets by matching with an oil circuit system.
Disclosure of Invention
In order to solve the technical problems, the invention designs a terminal liquid cooling structure of a high-power connector, which is used for cooling a charging terminal of a high-current charging system of an electric automobile, and can ensure high efficiency and balance to realize cooling of the charging terminal while reducing the volume and the weight.
The utility model provides a terminal liquid cooling structure of high-power connector for the cooling of electric automobile heavy current charging system charging terminal, includes:
the power core wire DC at least comprises a power terminal DC + and a power terminal DC-, the power terminal DC + and the power terminal DC-are used for carrying large current for charging, the power terminal DC + and the power terminal DC-are hollow in the interior to realize the flowing of cooling oil, and terminal holes are formed in the positions, close to the waist, of the power terminal DC + and the power terminal DC-;
the rubber pipeline is in a charging cable, and a power core wire DC of a terminal of the high-power connector and cooling oil share the rubber pipeline;
the cooling oil is in direct contact with the power terminals DC + and DC-through pipelines to realize heat conversion;
the power terminal DC + and the power terminal DC-are mounted on the plastic oil tank, an oil tank opening is formed in the plastic oil tank, the oil tank opening is connected with the terminal opening to form a cooling oil circulation passage, and the plastic oil tank is provided with a liquid inlet pipeline;
the sealing ring is positioned between the power terminal DC +, the power terminal DC-and the plastic oil tank to form a sealed and isolated oil path environment with the outside;
the oil tank water nozzle is positioned on one side of the power core wire DC and is simultaneously connected with terminal openings of the power terminal DC + and the power terminal DC-;
the plastic sealing nut is used for fixing the water nozzle of the oil tank and realizing the connection between the water nozzle of the oil tank and the plastic oil tank;
a sealing metal nut located on the power terminal DC + and power terminal DC-;
the liquid return pipe is connected with the power terminal DC + and the power terminal DC-in a sealing mode through the sealing metal screw cap;
the storage cooling device is connected with the liquid return pipe and is used for storing and cooling the cooling oil;
the tail parts of the power terminals DC + and the power terminals DC-are respectively connected with a liquid inlet oil pipe through a pagoda structure, the pagoda structure and the liquid inlet oil pipe are fixed through terminal nuts to realize the sealing isolation of an oil way from the outside, and the liquid inlet pipe is connected with the liquid inlet oil pipe of the plastic oil tank.
Preferably, power terminal DC + and power terminal DC-are cavity, and cavity in first cavity and the second respectively, cavity the same in first cavity and the second, keep away from the one end of returning the liquid pipe in first cavity and the second and be the lower extreme and fix respectively and be provided with first regulating part and second regulating part, first regulating part and second regulating part all include square seal box, the bottom and the lower extreme of seal box pass through insulating part fixed connection, the lateral wall of seal box is formed by the elastic conductive material who has first elasticity, the top of seal box is formed for having the elastic conductive material of second, second elasticity is greater than first elasticity, it is greater than the high electrically conductive heat conduction material of coolant oil to hold the heat conductivity in the seal box.
Preferably, the plastic oil tank is made of a high-temperature-resistant and corrosion-resistant nylon material.
Preferably, the plastic oil tank, the sealing ring, the plastic sealing nut, the sealing metal nut, the power terminal DC + and the power terminal DC-are mutually matched to form a cooling oil channel with one inlet and two outlets and stable sealing.
Preferably, the cooling oil cooling device further comprises a liquid circulating pump, and the cooling oil flows through the liquid circulating pump.
Preferably, the terminal openings in the power terminals DC + and DC-are of the same size so that the cooling oil is evenly distributed into the cavities of the power terminals DC + and DC-after entering the plastic oil tank.
Preferably, the liquid cooling structure is formed into an oil cooling direct cooling system with one inlet and two outlets, so that the maximum heat balance is realized.
Preferably, the power terminals DC + and DC-are in direct contact with the cooling oil.
Preferably, the high-conductivity heat-conducting material is mercury, and at a temperature lower than 38 ℃, the deformation of the side wall of the sealing box is not enough to enable the side wall of the sealing box to be in contact with the inner wall of the first hollow cavity or the second hollow cavity.
Preferably, the sealing ring is a "0" ring.
The invention has at least the following beneficial effects:
1. through sealing into an external isolated whole with high heat conduction and coolant liquid, great improvement heat transfer's security, cooperation coolant oil and power heart yearn and power terminal's direct contact has simultaneously promoted heat conduction efficiency by a wide margin to improve terminal charging current in order to promote charging power, thereby realize charging system's cooling, improve the security of heavy current charging process.
2. Through the special structure of the sealing box matched with the structure with one inlet and two outlets, the large expansion can be realized on the side with higher temperature, on one hand, the conductive liquid is enabled to expand and contact with the side wall of the hollow cavity, so that a parallel structure is formed to reduce resistance, and meanwhile, the sealing box is enabled to preferentially move upwards by being matched with better second elasticity, so that the volume of the liquid with higher heat conduction is increased (the liquid inlet hole can not be shielded by setting), the heat dissipation efficiency is increased, and the heat balance of the anode and the cathode of the power terminal is realized.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along the line B-B in FIG. 1 according to the present invention;
FIG. 4 isbase:Sub>A schematic sectional view of the structure of FIG. 2 taken along the line A-A.
In the figure: 1. a power terminal; 2. a plastic fuel tank; 3. a plastic seal nut; 4. a metal sealing nut; 5. a liquid return pipe; 6. a seal ring; 7. and (6) opening holes in the terminals.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
First embodiment
As shown in fig. 1 to 4, a terminal liquid cooling structure of a high power connector for cooling a charging terminal of a high current charging system of an electric vehicle comprises: the power core wire DC at least comprises a power terminal 1, the power terminal 1 at least comprises a power terminal DC + and a power terminal DC-, the power terminal DC + and the power terminal DC-are used for carrying large current to charge, the power terminal DC + and the power terminal DC-are hollow to realize the flowing of cooling oil, and terminal holes 7 are formed in positions, close to waist portions, of the power terminal DC + and the power terminal DC-, specifically shown in fig. 3.
The high-power connector is characterized by further comprising a rubber pipeline, wherein the rubber pipeline is in the charging cable, and a power core wire DC of a terminal of the high-power connector and cooling oil share the rubber pipeline; and cooling oil which is in direct contact with the power terminal DC + and the power terminal DC-through a pipeline to realize heat conversion. The plastic oil tank 2, the power terminal DC + and the power terminal DC-are arranged on the plastic oil tank 2, an oil tank opening is formed in the plastic oil tank 2, the oil tank opening is connected with the terminal opening 7 to form a cooling oil circulation passage, and the plastic oil tank 2 is provided with a liquid inlet pipeline; the sealing ring 6 is positioned between the power terminal DC +, the power terminal DC-and the plastic oil tank 2, and an oil path environment which is sealed and isolated with the outside is formed; the oil tank water nozzle is positioned on one side of the power core wire DC and is simultaneously connected with the terminal opening holes 7 of the power terminal DC + and the power terminal DC-; the plastic sealing nut 3 is used for fixing the water nozzle of the oil tank and realizing the connection between the water nozzle of the oil tank and the plastic oil tank; the sealing metal screw cap 4 is positioned on the power terminal DC + and the power terminal DC-; the liquid return pipe 5 is hermetically connected with the power terminal DC + and the power terminal DC-through a sealing metal nut 4; and the storage cooling device is connected with the liquid return pipe 5 and is used for storing and cooling the cooling oil. The tail parts of the power terminal DC + and the power terminal DC-are respectively connected with the liquid inlet oil pipe through a pagoda structure, the pagoda structure and the liquid inlet oil pipe are fixed through terminal nuts to realize the sealing isolation of an oil way from the outside, and the liquid inlet pipeline is connected with the liquid inlet oil pipe of the plastic oil tank.
Specifically, the rubber pipe used by the power core DC and the oil cooling liquid together allows the cooling oil to directly contact with the power terminal 1 through the pipe to realize heat conversion; and the power terminal DC + and the power terminal DC-are charged by carrying large current, and the power terminal DC + and the power terminal DC-are hollow to realize the flow of cooling oil.
Specifically, the sizes of terminal openings in the power terminals DC + and DC-are the same, so that cooling oil is evenly distributed into cavities of the power terminals DC + and DC-after entering the plastic oil tank, and uniformity of heat dissipation is guaranteed.
The power terminal 1 is arranged on the plastic oil tank 2 (the oil tank is made of high-temperature-resistant and corrosion-resistant nylon materials), a hole is formed in the position, close to the waist, of the terminal, and the hole is connected with the hole in the plastic oil tank 2, so that bridging between DC + and the power terminal DC-and the plastic oil tank 2 can be achieved, and a circulation passage is provided for cooling oil; an oil-resistant rubber sealing ring 6 is also connected between the two terminals and the plastic oil tank 2 to realize the sealing isolation of the oil way from the outside; the tail parts of the two terminals are respectively connected with the oil pipe through a pagoda structure and are fixed by nuts to realize the sealing isolation of an oil way from the outside, and the circulation of cooling oil in a closed environment is ensured. The plastic oil tank 2 is provided with a special liquid inlet pipeline connected with a liquid inlet oil pipe. The plastic oil tank 2, the sealing ring 6, the plastic sealing nut 3, the metal sealing nut 4, the power terminal DC + and the power terminal DC-are mutually matched to form a cooling oil channel with one inlet and two outlets, which is closed and stable, and heat is taken away from the power terminal DC + and the power terminal DC-through fluid.
The cooling oil flows through the liquid circulating pump, and heat is taken away in the circulating process.
Specifically, the seal ring 6 is a "0" ring.
The working principle of the liquid cooling structure of the terminal is as follows: the cooling oil flows through the liquid circulating pump, passes through a rubber pipeline (shared by a copper power core wire) in the cable and is connected with an oil tank water nozzle of the plastic oil tank 2 through the plastic sealing nut 3, the cooling oil is evenly distributed into cavities of the DC + and power terminal DC-terminals after entering the plastic oil tank 2, and the power terminal DC + and the power terminal DC-are in direct contact with the cooling oil, so that the heat exchange effect can be improved. The oil then flows back to the storage cooling device via the connection point of the metal sealing nut 4 on the power terminal 1 into the return lines 5 of the power cores of the power terminal DC + and the power terminal DC-, respectively. Through the repeated circulation, the heat that power terminal 1 and heart yearn produced can directly be given cooling oil to cooling oil, making power terminal 1 and heart yearn can enough be used for heavy current to charge, can not produce very high temperature again, satisfied the high-power quick safe requirement of charging of system. The power terminal 1 is in direct contact with the cooling liquid, so that direct heat exchange is realized between the power terminal and the cooling liquid, and heat generated in the charging process is transferred into the cooling liquid to the maximum extent and is rapidly taken away from the charging circulation system, so that the cooling efficiency is greatly improved by operation, and the operation is superior to a cooling liquid heat exchange indirect conduction mode; the sealing is realized by using the sealing ring 6 between the power terminal 1 and the plastic oil tank 2, the power terminal 1 and the liquid return pipe 5 are compressed by the pagoda structure and the metal sealing nut 4 to realize sealing connection, and the plastic oil tank 2 and the liquid inlet oil pipe are compressed by the pagoda structure on the water nozzle and the plastic sealing nut 3 to realize sealing connection. The measures ensure that the whole oil way cooling system is completely sealed and isolated from the outside, ensure the safety of charging and cooling and also ensure that the oil is prevented from being polluted by the outside in the cooling process; through the design that whole cooling system is one into two oil-cooling direct cooling system that go out, such design makes power terminal DC + and power terminal DC-both ends realize maximum heat balance in the cooling process, and the liquid cooling structure forms one into two oil-cooling direct cooling system that go out, has realized maximum heat balance, has solved the problem that the temperature rise inequality leads to the charging efficiency to reduce.
Second embodiment
In practical use, it is found that the thermal balance of the power terminals DC + and DC-is very important, and in the existing two-in two-out case, it is usually difficult to control the thermal balance, but the thermal balance can be better achieved in the above embodiment of the present invention, but there is room for improvement of the thermal balance due to local unbalance of contact, abrasion and coolant flow during use, and in use, the thermal balance is less under the terminal opening through which oil, i.e. coolant enters the DC, and the heat dissipation effect of the coolant itself is not as good as copper, and the hollow position at this position has relatively less contribution to heat dissipation and thermal balance, but rather has greater contribution to heat conduction and electrical conduction, e.g. resistance. In order to ensure normal thermal balance, for example, when the sealed box is not charged and is not subjected to thermal compensation, when the temperature is lower than 38 ℃, the deformation of the side wall of the sealed box is not enough to enable the side wall of the sealed box to be in contact with the inner wall of the first hollow cavity or the second hollow cavity, so that when the charging temperature rises, the position of the sealed box can be increased through the expansion of the high-conductivity heat-conducting material, and the expansion mainly faces the upper end, namely the open end, so that the volume of the high-conductivity heat-conducting material can be enlarged and the heat dissipation transmission can be improved.
In summary, the structure with one inlet and two outlets is matched with the special structure of the sealing box, so that the larger expansion can be realized at the side with higher temperature, on one hand, the conductive liquid is expanded to be contacted with the side wall of the hollow cavity, thereby forming a parallel structure to reduce resistance, and on the other hand, the sealing box is preferentially moved upwards by being matched with the better second elasticity, thereby increasing the volume of the liquid with higher heat conductivity (the liquid inlet hole can not be shielded by the arrangement), increasing the heat dissipation efficiency and realizing the heat balance of the anode and the cathode of the power terminal.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a terminal liquid cooling structure of high-power connector for the cooling of electric automobile heavy current charging system charging terminal, its characterized in that includes:
the power core wire DC at least comprises a power terminal DC + and a power terminal DC-, the power terminal DC + and the power terminal DC-are used for carrying large current for charging, the power terminal DC + and the power terminal DC-are hollow in the interior to realize the flowing of cooling oil, and terminal holes are formed in the positions, close to the waist, of the power terminal DC + and the power terminal DC-;
the rubber pipeline is in a charging cable, and a power core wire DC of a terminal of the high-power connector and cooling oil share the rubber pipeline;
the cooling oil is in direct contact with the power terminals DC + and DC-through pipelines to realize heat conversion;
the power terminal DC + and the power terminal DC-are installed on the plastic oil tank, an oil tank opening is formed in the plastic oil tank, the oil tank opening is connected with the terminal opening to form a cooling oil circulation passage, and the plastic oil tank is provided with a liquid inlet pipeline;
the sealing ring is positioned between the power terminal DC +, the power terminal DC-and the plastic oil tank to form a sealed and isolated oil path environment with the outside;
the oil tank water nozzle is positioned on one side of the power core wire DC and is simultaneously connected with terminal openings of the power terminal DC + and the power terminal DC-;
the plastic sealing nut is used for fixing the oil tank water nozzle and realizing the connection of the oil tank water nozzle and the plastic oil tank;
a sealing metal nut located on the power terminal DC + and power terminal DC-;
the liquid return pipe is connected with the power terminal DC + and the power terminal DC-in a sealing mode through the sealing metal screw cap;
the storage cooling device is connected with the liquid return pipe and is used for storing and cooling the cooling oil;
the tail parts of the power terminal DC + and the power terminal DC-are respectively connected with a liquid inlet oil pipe through a pagoda structure, the pagoda structure and the liquid inlet oil pipe are fixed through a terminal nut to realize the sealing isolation of an oil way from the outside, and the liquid inlet pipeline is connected with the liquid inlet oil pipe of the plastic oil tank;
power terminal DC + and power terminal DC-are cavity, and cavity in first cavity and the second respectively, cavity is the same in first cavity and the second, keep away from back the one end of liquid pipe in first cavity and the second and be the lower extreme and fix respectively and be provided with first regulating part and second regulating part, first and second regulating part all include square seal box, insulation part fixed connection is passed through with the lower extreme in the bottom of seal box, the lateral wall of seal box is formed by the elasticity conducting material who has first elasticity, the top of seal box forms for having the elastic conducting material of second, second elasticity is greater than first elasticity, it is greater than the high electrically conductive heat conduction material of thermal conductivity cooling oil to hold in the seal box.
2. The terminal liquid cooling structure of high power connector as claimed in claim 1, wherein the plastic oil tank is made of nylon material with high temperature resistance and corrosion resistance.
3. The terminal liquid cooling structure of claim 1, wherein the plastic oil tank, the seal ring, the plastic seal nut, the seal metal nut, and the power terminal DC + and the power terminal DC-have mutually adaptive structures and cooperate with each other to form a cooling oil channel with two inlets and two outlets sealed and stable.
4. The terminal liquid cooling structure of high power connector of claim 1, further comprising a liquid circulation pump, wherein the cooling oil is flowed by the liquid circulation pump.
5. The terminal liquid cooling structure of claim 1 wherein the terminal openings in the power terminals DC + and DC-are the same size so that the cooling oil is evenly distributed into the cavities of the power terminals DC + and DC-after entering the plastic oil tank.
6. The terminal liquid cooling structure of high power connector of claim 1, wherein the liquid cooling structure is formed as a two-in and two-out oil-cooled direct cooling system to achieve maximum thermal balance.
7. The terminal liquid cooling structure of high power connector of claim 1, wherein said power terminals DC + and DC-are in direct contact with said cooling oil.
8. The liquid cooling structure of the terminal of the high power connector as claimed in claim 2, wherein the high conductivity heat conducting material is mercury, and at a temperature lower than 38 ℃, the deformation of the sidewall of the sealing box is insufficient to make the sidewall of the sealing box contact with the inner wall of the first hollow cavity or the second hollow cavity.
9. The terminal liquid cooling structure of high power connector of claim 1, wherein said sealing ring is a "0" ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210820266.5A CN114899634B (en) | 2022-07-13 | 2022-07-13 | Terminal liquid cooling structure of high-power connector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210820266.5A CN114899634B (en) | 2022-07-13 | 2022-07-13 | Terminal liquid cooling structure of high-power connector |
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| Publication Number | Publication Date |
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| CN114899634A CN114899634A (en) | 2022-08-12 |
| CN114899634B true CN114899634B (en) | 2022-11-15 |
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| CN114537181A (en) * | 2022-03-09 | 2022-05-27 | 四川永贵科技有限公司 | Oil cooling structure of large-current terminal |
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| CN104216081B (en) * | 2014-09-22 | 2017-01-11 | 中天科技海缆有限公司 | Deep-sea optical cable extrusion molding branch joint box and mounting process thereof |
| CN207416560U (en) * | 2017-05-24 | 2018-05-29 | 深圳市沃尔核材股份有限公司 | Charging equipment cooling system |
| CN107887730B (en) * | 2017-09-29 | 2023-10-10 | 深圳市沃尔新能源电气科技股份有限公司 | Liquid-cooled cable plug-in assembly and connector |
| CN108493725B (en) * | 2018-03-08 | 2019-07-23 | 浙江零跑科技有限公司 | A kind of arrangements of electric connection for the high-power charging of electric car |
| KR101934274B1 (en) * | 2018-07-06 | 2019-01-02 | 주식회사 와이엠텍 | Sealed 2-pole dc contact device |
| CN110254264A (en) * | 2019-07-04 | 2019-09-20 | 昆山惠禾新能源科技有限公司 | Liquid cooling terminal and charging gun |
| CN111823907A (en) * | 2020-07-27 | 2020-10-27 | 何英 | Novel new forms of energy rifle that charges |
| CN111864439A (en) * | 2020-08-03 | 2020-10-30 | 南京伟思医疗科技股份有限公司 | Electro-hydraulic joint of magnetic stimulation rehabilitation instrument |
| CN112566472B (en) * | 2020-12-21 | 2024-01-30 | 威海市泓淋电力技术股份有限公司 | Non-contact liquid cooling system for high-power charging and liquid cooling method thereof |
| CN113212202A (en) * | 2021-04-30 | 2021-08-06 | 四川永贵科技有限公司 | Liquid cooling structure of heavy current terminal |
| CN216507940U (en) * | 2021-11-19 | 2022-05-13 | 立讯精密工业(江苏)有限公司 | Rifle cooling system and rifle that charges charge |
| CN114554797A (en) * | 2022-02-24 | 2022-05-27 | 深圳巴斯巴科技发展有限公司 | High efficiency charging plug cooling structure and charging connector |
| CN114537181A (en) * | 2022-03-09 | 2022-05-27 | 四川永贵科技有限公司 | Oil cooling structure of large-current terminal |
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