Liquid-cooled charging gun

Abstract

The liquid-cooled charging gun is used for being inserted into a charging base of an electric vehicle and comprises a gun body and a charging gun head, the charging gun head is locked at the front end of the gun body through a plurality of screws, two cooling assemblies are arranged in the gun body, and each cooling assembly is connected with a power terminal. The cooling assembly is arranged in a one-to-one manner, so that the operating temperature of the charging gun during operation is effectively reduced by the cooling assembly, a terminal mounting part is arranged at the front end of the gun body, two power supply terminals and a charging terminal group are mounted on the terminal mounting part, and each power supply terminal is locked and fixed on the terminal mounting part through at least one screw. When the power supply terminal is damaged, the power supply terminal can be replaced by a new power supply terminal after the screw is directly detached from the gun head, so that the maintenance is facilitated, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to a charging gun, in particular to a liquid-cooled charging gun. Background Art

[0002] Generally speaking, public charging stations are mostly equipped with DC charging stations to allow electric vehicles to charge quickly. Although DC charging stations charge quickly, they require a large amount of instantaneous power supply, which has high construction costs. The current of fast charging exceeds 400A, which will generate a lot of waste heat when passing through the conductor. The high temperature will reduce the charging current and cause the charging efficiency to drop. In addition, in order to adapt to the safety of using ultra-large currents, the cable of the charging gun needs to use a thicker diameter and heavier weight cable, which is more inconvenient for users to operate.

[0003] In addition, charging guns installed in public spaces are frequently used and operated by different users, so their charging connection terminals are easily damaged. At this time, a new charging gun must be replaced, which increases maintenance costs. Utility Model Content

[0004] The technical problem to be solved by the present application is to provide a charging gun, in particular a liquid-cooled charging gun.

[0005] According to the purpose of the present application, a liquid-cooled charging gun is provided, comprising a gun body having a terminal mounting portion, two power terminals and a charging terminal group being mounted on the terminal mounting portion, and the two power terminals being detachably arranged; two cooling components being arranged in the gun body, and the front ends of the two cooling components being respectively connected to the two power terminals, and each of the cooling components comprising a liquid inlet cable and a liquid outlet pipe; and a charging gun head being detachably mounted on the gun body.

[0006] The charging gun head has a power terminal connection part and a charging terminal connection part, the power terminal connection part has an insertion part corresponding to the two power terminals, and the charging terminal connection part has an insertion part corresponding to the charging terminal group.

[0007] Wherein, the liquid inlet cable of each cooling component is arranged below the liquid outlet pipe.

[0008] Each of the power terminals includes a plug-in portion and a conductor connection portion. An adapter is provided on the outer wall of the conductor connection portion. The adapter is used to connect the liquid outlet pipe. The rear end of the conductor connection portion is connected to the liquid inlet cable.

[0009] A cooling chamber is formed inside the conductor connecting portion, a cooling liquid flow channel is formed inside the liquid inlet cable, and the cooling chamber is connected to the cooling liquid flow channel.

[0010] The liquid inlet cable further comprises a conductor, a part of which is located in the cooling liquid flow channel, and another part of which is located in the cooling chamber.

[0011] The charging gun head is positioned on the gun body by at least one screw.

[0012] The conductor connection parts of the two power terminals are located in the gun body, the plug-in part protrudes from the terminal mounting part, and the plug-in part is positioned on the conductor connection part through a screw.

[0013] The charging terminal group includes a charging terminal and a plurality of grounding terminals, and the charging terminal is connected to a charging line.

[0014] The details of other effects and embodiments of the present application are described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application 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 recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 is an exploded diagram of components of an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of a cooling assembly in a gun body according to an embodiment of the present application;

[0018] Figure 3 It is a schematic diagram of the coolant flow direction of an embodiment of the present application.

[0019] Explanation of symbols

[0020] 10: Charging gun head 11: Power terminal connection part

[0021] 12: Charging terminal connection 13: Screw

[0022] 20: Gun body 25: Cooling assembly

[0023] 251: Liquid inlet cable 251a: Cooling liquid channel

[0024] 252: Liquid outlet pipe 27: Charging cable

[0025] 31: Charging terminal group 31a: Charging terminal

[0026] 31b: Ground terminal 33: Power terminal

[0027] 331: plug-in part 332: conductor connection part

[0028] 332a: Cooling chamber 34: Adapter

[0029] 35: Screw 36: Conductor DETAILED DESCRIPTION

[0030] The positional relationships described in the following embodiments include: front, back, up, down, left and right. Unless otherwise specified, they are based on the directions of the components in the drawings. This application uses the plug-in direction of the charging gun as the front-to-back direction.

[0031] See also Figure 1 to Figure 2 , depicts a liquid-cooled charging gun for inserting into a charging dock of an electric vehicle, including a gun body 20 and a charging gun head 10. The charging gun head 10 is fixed to the front end of the gun body 20 by a plurality of screws 13. Two cooling components 25 are provided in the gun body 20. Each cooling component 25 includes a liquid inlet cable 251 and a liquid outlet pipe 252. The cooling component 25 is provided to reduce the operating temperature of the charging gun during operation.

[0032] Further explanation, two power terminals 33 and a charging terminal group 31 are installed on a terminal installation part at the front end of the gun body 20, and the charging gun head 10 has a power terminal connection part 11 and a charging terminal connection part 12. The power terminal connection part 11 has an insertion part corresponding to the two power terminals 33, and the charging terminal connection part 12 has an insertion part corresponding to the charging terminal group 31, so that the charging gun head 10 can supply power to the electric vehicle after being inserted into the charging seat of the electric vehicle. The charging terminal group 31 includes a charging terminal 31a and a plurality of grounding terminals 31b, and the rear end of the charging terminal 31a is connected to a charging line 27.

[0033] The two power terminals 33 are respectively a positive terminal and a negative terminal, and each of the power terminals 33 includes a plug-in portion 331 and a conductor connecting portion 332. The conductor connecting portion 332 is located inside the gun body 20, and the plug-in portion 331 protrudes from the terminal mounting portion for connecting to a charging seat of an electric vehicle, and the plug-in portion 331 is locked to the conductor connecting portion 332 by at least one screw 35. In this way, when the power terminal 33 is damaged, the gun head can be disassembled by removing the screw 13, and the screw 35 can be removed to facilitate the replacement of the plug-in portion 331 of the new power terminal 33, thereby improving the convenience of maintenance and reducing maintenance costs.

[0034] In addition, an adapter 34 is provided on the outer wall surface of the conductor connection part 332 of each power terminal 33. The adapter 34 is used to connect the liquid outlet pipe 252. The rear end of the conductor connection part 332 is connected to the liquid inlet cable 251. A cooling chamber 332a is formed inside the conductor connection part 332. A cooling liquid flow channel 251a is formed inside the liquid inlet cable 251. The cooling chamber 332a is connected to the cooling liquid flow channel 251a. The liquid inlet cable 251 also has a conductor 36. A part of the conductor 36 is located in the cooling liquid flow channel 251a, and the other part protrudes from the cooling liquid flow channel 251a. When the liquid inlet cable 251 is connected to the conductor 36, the conductor 36 protruding from the cooling liquid flow channel 251a is located in the cooling chamber 332a.

[0035] In the embodiment of the present application, the liquid inlet cable 251 of each cooling assembly 25 is disposed below the liquid outlet pipe 252. The rear ends of the liquid inlet cable 251 and the liquid outlet pipe 252 are connected to a cooler (not shown) through a quick connector. The cooler provides cooling liquid. The flow direction of the cooling liquid is as follows: Figure 3 As shown, the coolant enters the coolant flow channel 251a of the liquid inlet cable 251 from the cooler and flows into the cooling chamber 332a. The coolant takes out the heat energy generated by the conductor 36 in the cooling chamber 332a and flows back to the cooler through the liquid outlet pipe 252. The waste heat is taken out by the continuous circulation of the coolant to achieve the heat dissipation effect.

[0036] In the embodiment of the present application, the rear end of the gun body 20 has an integrated component that integrates the two cooling components 25 and the charging line 27 and wraps them into a cable. Each cooling component 25 in the gun body 20 of the liquid-cooled charging gun of the present application corresponds to a power terminal 33. The one-to-one setting enables the cooling component 25 to effectively dissipate heat for the power terminal 33 and the conductor 36, which can improve the heat dissipation efficiency, reduce the diameter of the cable and reduce the weight of the cable, thereby improving the user's operating convenience.

[0037] In addition, by providing a detachable charging gun head 10 and power terminal 33, the convenience of maintenance is improved, allowing users to replace some parts to reduce maintenance costs.

[0038] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present application, and are not intended to limit the implementation methods of the technology of the present application in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present application, but they should still be regarded as technologies or embodiments that are essentially the same as the present application.

Claims

1. A liquid-cooled charging gun, characterized in that: The liquid-cooled charging gun comprises: A gun body having a terminal mounting portion, two power terminals and a charging terminal group mounted on the terminal mounting portion, the two power terminals being detachably arranged; Two cooling components are disposed in the gun body, the front ends of the two cooling components are respectively connected to the two power terminals, and each of the cooling components includes a liquid inlet cable and a liquid outlet pipe; and A charging gun head is detachably mounted on the gun body.

2. The liquid-cooled charging gun according to claim 1, characterized in that: The charging gun head has a power terminal connecting portion and a charging terminal connecting portion. The power terminal connecting portion has an inserting portion corresponding to the two power terminals, and the charging terminal connecting portion has an inserting portion corresponding to the charging terminal group.

3. The liquid-cooled charging gun according to claim 1, characterized in that: The liquid inlet cable of each cooling assembly is arranged below the liquid outlet pipe.

4. The liquid-cooled charging gun according to claim 1, characterized in that: Each of the power terminals includes a plug-in portion and a conductor connection portion. An adapter is provided on the outer wall surface of the conductor connection portion. The adapter is used to connect the liquid outlet pipe. The rear end of the conductor connection portion is connected to the liquid inlet cable.

5. The liquid-cooled charging gun according to claim 4, characterized in that: A cooling chamber is formed inside the conductor connecting portion, a cooling liquid flow channel is formed inside the liquid inlet cable, and the cooling chamber is connected to the cooling liquid flow channel.

6. The liquid-cooled charging gun according to claim 5, characterized in that: The liquid inlet cable also has a conductor, a part of which is located in the cooling liquid flow channel, and the other part of which is located in the cooling chamber.

7. The liquid-cooled charging gun according to claim 1, characterized in that: The charging gun head is positioned on the gun body through at least one screw.

8. The liquid-cooled charging gun according to claim 4, characterized in that: The conductor connection part of the two power terminals is located in the gun body, the plug-in part protrudes from the terminal installation part, and the plug-in part is positioned on the conductor connection part through a screw.

9. The liquid-cooled charging gun according to claim 1, characterized in that: The charging terminal set includes a charging terminal and a plurality of grounding terminals, and the charging terminal is connected to a charging line.

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