Liquid cooling charging gun and charging system

Abstract

The utility model discloses a liquid cooling charging gun and a charging system, and relates to the technical field of new energy charging connectors. The liquid cooling charging gun comprises a shell, a terminal assembly, two cooling structures and a liquid cooling cable. The terminal assembly comprises a positive terminal and a negative terminal which are arranged on the shell, and the positive terminal and the negative terminal are provided with a first connecting part and a second connecting part respectively. Each cooling structure is provided with a cooling cavity, a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline and the liquid outlet pipeline are communicated with the cooling cavity, and the two cooling structures are connected with the positive terminal and the negative terminal respectively, so that the first connecting part and the second connecting part are located in the two cooling cavities respectively. The liquid cooling cable comprises four liquid cooling pipes and wires located in the liquid cooling pipes, the four liquid cooling pipes are communicated with the two liquid inlet pipes and the two liquid outlet pipes respectively, the first connecting part is connected and communicated with the two wires through the two liquid cooling pipes, and the second connecting part is connected and communicated with the two wires through the other two liquid cooling pipes. The technical scheme of the utility model aims to improve the heat dissipation efficiency of the charging gun so as to improve the maximum transmission power.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy charging connector technical field, especially relate to a liquid cooling charging gun and charging system. BACKGROUND

[0002] With the rapid development of new energy automobile industry, new energy commercial vehicle market is also growing rapidly. At present, the market share of commercial vehicles such as electric van and truck is rising continuously, among which, the charging of commercial vehicle has the characteristics of large transmission power and high charging frequency, which makes the market have higher and higher requirements on the maximum transmission power and safety and stability of the charging gun.

[0003] Because higher charging work power will cause the heat of transmission element to increase, so that the overall temperature of the charging gun rises quickly, therefore, the positive terminal and the negative terminal in the prior art are communicated with a liquid cooling pipe respectively, and the two liquid cooling pipes are also connected through a pipeline, so as to form a cooling circulation loop to cool and heat dissipate the positive terminal and the negative terminal.

[0004] However, the demand for high-power charging gun in the market is still increasing, and it is necessary to further improve the maximum transmission power, but the charging gun in the prior art has the problem of serious heating after the power continues to increase, thereby affecting the charging efficiency and safety. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a liquid cooling charging gun and charging system, which aims to improve the heat dissipation efficiency of the charging gun to improve the maximum transmission power.

[0006] In order to achieve the above purpose, the utility model provides a liquid cooling charging gun, which comprises:

[0007] A shell;

[0008] A terminal assembly, the terminal assembly comprises a positive terminal and a negative terminal arranged in the shell, the positive terminal is provided with a first connecting part, and the negative terminal is provided with a second connecting part;

[0009] Two cooling structures, each cooling structure is provided with a cooling cavity, an inlet pipe and an outlet pipe communicated with the cooling cavity, and the two cooling structures are connected with the positive terminal and the negative terminal respectively, so that the first connecting part and the second connecting part are located in the two cooling cavities respectively; and

[0010] The liquid cooling cable comprises four liquid cooling pipes and wires in each of the liquid cooling pipes, and is connected with two cooling structures, so that the four liquid cooling pipes are connected with two liquid inlet pipes and two liquid outlet pipes respectively, and the first connecting part is connected with two wires through two liquid cooling pipes, and the second connecting part is connected with two wires through the other two liquid cooling pipes.

[0011] In an embodiment, each of the cooling structures comprises:

[0012] a base body, which is formed with the cooling cavity, a first opening and two second openings communicating with the cooling cavity, and the first opening and the second openings are oppositely arranged at two ends of the base body;

[0013] a seat body, which is arranged at the first opening, and a first fitting surface is formed on a side of the seat body away from the cooling cavity, the first fitting surface is provided with a first mounting hole, and the terminal assembly is provided with a second mounting hole corresponding to the first mounting hole; and

[0014] two connecting pipes, which are respectively connected with the two second openings to form the liquid inlet pipes and the liquid outlet pipes;

[0015] wherein the first mounting hole and the second mounting hole are connected by a fastener to tightly fit the terminal assembly and the first fitting surface, and seal the first opening.

[0016] In an embodiment, the positive terminal and the negative terminal each comprise:

[0017] a plug-in part, which is arranged on the shell, one end of the plug-in part is used for plug-in cooperation with a charging socket, and the other end of the plug-in part is provided with the first connecting part or the second connecting part; and

[0018] a mounting part, which is sleeved on an outer wall of the plug-in part and is formed with a second fitting surface, and the second fitting surface is provided with the second mounting hole;

[0019] wherein when the first mounting hole and the second mounting hole are connected by the fastener, the first fitting surface and the second fitting surface are tightly fitted.

[0020] In an embodiment, one of the first fitting surface and the second fitting surface is provided with a positioning pin, and the other is provided with a positioning hole.

[0021] wherein when the first fitting surface and the second fitting surface are tightly fitted, the positioning pin is inserted into the positioning hole.

[0022] In an embodiment, the mounting portion is further provided with a resistance mounting hole, and the liquid-cooled charging gun further comprises a thermistor arranged in the resistance mounting hole, the thermistor being used to detect the temperature of the positive terminal and the negative terminal.

[0023] In an embodiment, the liquid-cooled charging gun further comprises a plurality of tail copper bars, each of the liquid-cooled pipes is connected to one of the tail copper bars at an end away from the terminal assembly, and the tail copper bars are sequentially provided with an inlet port, an adapter port and a clamping port along the extension direction of the tail copper bars, the opening direction of the inlet port is consistent with the extension direction of the tail copper bars, and is perpendicular to the opening directions of the adapter port and the clamping port, and the inlet port is in communication with the adapter port.

[0024] The liquid-cooled pipe is in communication with the inlet port, the adapter port is used to be in communication with a cooling liquid supply device, and the clamping port is used for other mechanisms to clamp the tail copper bar.

[0025] In an embodiment, the opening directions of the adapter ports of the two tail copper bars corresponding to each of the cooling structures are opposite.

[0026] And / or, each of the adapter ports is provided with an adapter head used to connect the adapter port and the cooling liquid supply device.

[0027] In an embodiment, the liquid-cooled cable further comprises a sleeve, the sleeve is formed with a transmission cavity, four of the liquid-cooled pipes are arranged in the transmission cavity, and the transmission cavity is further provided with a ground wire and a plurality of signal lines.

[0028] The shell is further provided with a signal terminal and a ground terminal, the ground terminal is connected to the ground wire, and the signal terminal is connected to the signal lines.

[0029] In an embodiment, the shell comprises:

[0030] a gun shell, the gun shell is formed with a mounting cavity and a third opening in communication with the mounting cavity;

[0031] a gun head, the gun head is arranged at the third opening, and the gun head is provided with a first through hole, the first through hole being in communication with the third opening; and

[0032] a rear support frame, the rear support frame is detachably mounted in the first through hole, and the terminal assembly is mounted on the rear support frame.

[0033] In an embodiment, the gun head is triangular in cross section, and the third opening is triangular corresponding to the gun head.

[0034] In one embodiment, the liquid-cooled charging gun is further provided with a fourth opening communicating with the mounting cavity. The liquid-cooled charging gun also includes a wire harness assembly, which includes a wire clamp body and a wire clamp assembly. The wire clamp body is located at the fourth opening, and the wire clamp assembly is located on the side of the wire clamp body facing away from the mounting cavity. The wire clamp assembly is provided with an adjustable clamping through hole.

[0035] In one embodiment, two wire clamp assemblies are provided, and a clamping through hole is formed between the two wire clamp assemblies. The two wire clamp assemblies are connected by a connector.

[0036] In one embodiment, the end of the plug portion away from the first connecting portion or the second connecting portion is provided with a slot.

[0037] This utility model also proposes a charging system, which includes the above-mentioned liquid-cooled charging gun.

[0038] The liquid-cooled charging gun of this invention connects two cooling structures to the positive and negative terminals respectively. The first connection portion of the positive terminal and the second connection portion of the negative terminal are located within two cooling chambers of the two cooling structures. Each cooling chamber is connected to two liquid-cooling pipes, allowing the coolant to circulate within the cooling chamber through the two pipes. This effectively dissipates heat from the first connection portion of the positive terminal and the second connection portion of the negative terminal independently, improving heat dissipation efficiency. Furthermore, since the first and second connection portions are located within the cooling chambers, they can directly contact the coolant, further enhancing heat dissipation and ensuring the safety of the charging gun under high-power operation. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 A schematic diagram of a liquid-cooled charging gun according to an embodiment of the present invention;

[0041] Figure 2 for Figure 1 Exploded view of the liquid-cooled charging gun;

[0042] Figure 3 for Figure 1 Schematic diagram of the structure of the liquid-cooled cable;

[0043] Figure 4 As Figure 1 Structure diagram of part structure of liquid-cooled charging gun;

[0044] Figure 5 As Figure 1 Structure diagram of part structure of liquid-cooled charging gun from another perspective;

[0045] Figure 6 As Figure 5 Structure diagram of A-A section;

[0046] Figure 7 As Figure 1 Structure diagram of terminal assembly and cooling structure.

[0047] BRIEF DESCRIPTION OF DRAWINGS

[0048] 100, liquid-cooled charging gun; 1, shell; 11, gun shell; 111, mounting cavity; 112, third opening; 113, fourth opening; 12, gun head; 121, first through hole; 13, rear support frame; 2, terminal assembly; 21, positive terminal; 211, first connecting part; 212, plug-in part; 231, mounting part; 2311, second bonding surface; 2312, second mounting hole; 2313, positioning hole; 2314, resistance mounting hole; 22, negative terminal; 221, second connecting part; 23, thermistor; 24, signal terminal; 25, ground terminal; 3, cooling structure; 31, base body; 311, cooling cavity; 312, first opening; 313, second opening; 32, seat body; 321, first bonding surface; 3211, first mounting hole; 3212, positioning pin; 33, connecting pipe; 331, liquid inlet pipe; 332, liquid outlet pipe; 34, sealing ring; 4, liquid-cooled cable; 41, liquid-cooled pipe; 411, wire; 42, tail copper bar; 421, access port; 422, adapter; 4221, adapter; 423, clamping port; 43, sleeve; 431, ground wire; 432, signal wire; 433, transmission cavity; 5, wire bundle assembly; 51, wire clamp body; 52, wire clamp assembly; 521, clamping through hole; 53, wire sealing body; 54, baffle; 55, tail sheath.

[0049] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0051] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0052] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0053] With the rapid development of the new energy automobile industry, the market of new energy commercial vehicles is also growing rapidly. At present, the market share of commercial vehicles such as electric van trucks and trucks is rising, among which, the charging of commercial vehicles has the characteristics of large transmission power and high charging frequency, which makes the market have higher and higher requirements for the maximum transmission power and safety and stability of the charging gun.

[0054] Because higher charging working power will cause more heat of the transmission element, so as to accelerate the overall temperature rise of the charging gun, therefore, in the prior art, the positive terminal and the negative terminal are respectively communicated with one liquid cooling pipe, and the two liquid cooling pipes are also connected through a pipeline, so as to form a cooling circulation loop, so as to dissipate heat and cool the positive terminal and the negative terminal. At present, the high-power charging gun products on the market are concentrated in 600-800kW.

[0055] However, the market demand for high-power charging guns is still increasing, and it is necessary to further increase the maximum transmission power, but the existing charging gun has a serious heating problem after further increasing the power, thereby affecting the charging efficiency and safety. Once the maximum power of the charging gun reaches the megawatt level, the corresponding heat dissipation effect cannot be achieved, thereby causing the charging gun to heat severely.

[0056] The main purpose of the utility model is to provide a liquid-cooled charging gun 100 and a charging system, which aims to improve the heat dissipation efficiency of the charging gun to improve the maximum transmission power.

[0057] Please refer to Figures 1 to 7 In an embodiment of the utility model, the liquid-cooled charging gun 100 includes a shell 1, a terminal assembly 2, two cooling structures 3, and a liquid-cooled cable 4. The terminal assembly 2 includes a positive terminal 21 and a negative terminal 22 provided on the shell 1, the positive terminal 21 is provided with a first connecting part 211, and the negative terminal 22 is provided with a second connecting part 221. Each cooling structure 3 is provided with a cooling cavity 311 and a liquid inlet pipe 331 and a liquid outlet pipe 332 communicating with the cooling cavity 311, and the two cooling structures 3 are connected with the positive terminal 21 and the negative terminal 22 respectively, so that the first connecting part 211 and the second connecting part 221 are located in the two cooling cavities 311 respectively. The liquid-cooled cable 4 includes four liquid-cooled pipes 41 and wires 411 in each liquid-cooled pipe 41, and the liquid-cooled cable 4 is connected with the two cooling structures 3, so that the four liquid-cooled pipes 41 are connected and communicated with the two liquid inlet pipes 331 and the two liquid outlet pipes 332 respectively, and the first connecting part 211 is connected and conducted with the two wires 411 through the two liquid-cooled pipes 41, and the second connecting part 221 is conducted with the two wires 411 through the other two liquid-cooled pipes 41.

[0058] The liquid-cooled charging gun 100 of the technical scheme of the utility model connects the two cooling structures 3 with the positive terminal 21 and the negative terminal 22 respectively, so that the first connecting part 211 of the positive terminal 21 and the second connecting part 221 of the negative terminal 22 are located in the two cooling cavities 311 of the two cooling structures 3 respectively, and each cooling cavity 311 is communicated with two liquid-cooled pipes 41, so that the cooling liquid can circulate and flow in the cooling cavity 311 through the two liquid-cooled pipes 41, thereby cooling the first connecting part 211 of the positive terminal 21 and the second connecting part 221 of the negative terminal 22 respectively, which can independently cool the positive terminal 21 and the negative terminal 22 respectively, thereby improving the heat dissipation efficiency. At the same time, since the first connecting part 211 and the second connecting part 221 are located in the cooling cavity 311, the first connecting part 211 and the second connecting part 221 can directly contact with the cooling liquid, thereby further improving the heat dissipation effect and ensuring the safety of the charging gun under high-power working condition.

[0059] In the embodiment, the shell 1 serves as a support structure of the entire liquid-cooled charging gun 100, the positive terminal 21 and the negative terminal 22 in the terminal assembly 2 are used for power transmission, and the cooling structure 3 is connected with the terminal assembly 2, so that the two cooling cavities 311 can respectively dissipate heat for the first connecting part 211 of the positive terminal 21 and the second connecting part 221 of the negative terminal 22. The liquid-cooled cable 4 not only can transmit power, but also can deliver the cooling liquid into the cooling cavity 311 through the communication of the liquid-cooled pipe 41 with the cooling structure 3, and then guide the cooling liquid after absorbing heat. It should be noted that the cooling liquid can be a glycol solution, an oil solution, etc. with good heat conduction performance. The cooling liquid circulates in the cooling cavity 311 and carries away the heat generated by the first connecting part 211 and the second connecting part 221. The four liquid-cooled pipes 41 are respectively communicated with the liquid inlet pipeline 331 and the liquid outlet pipeline 332, which ensures the circulation of the cooling liquid, and at the same time, the first connecting part 211 and the second connecting part 221 are respectively conducted through the two liquid-cooled pipes 41 and the wire 411, which ensures the stability of power transmission.

[0060] It can be understood that, compared with the traditional overall heat dissipation mode, the independent heat dissipation mode of the first connecting part 211 and the second connecting part 221 can more accurately control the temperature of each terminal, and avoid affecting the normal work of the entire charging gun due to overheating of one terminal. At the same time, the first connecting part 211 and the second connecting part 221 directly contact with the cooling liquid for heat dissipation, which reduces the intermediate link of heat transfer, improves the heat dissipation effect, and ensures the safety of the charging gun in the high-power working state.

[0061] Please refer to Figure 2 and Figure 7 In an embodiment, each cooling structure 3 includes a base body 31, a seat body 32, and two connecting pipes 33. The base body 31 is formed with a cooling cavity 311, a first opening 312 communicating with the cooling cavity 311, and two second openings 313. The first opening 312 and the second opening 313 are oppositely arranged at two ends of the base body 31. The seat body 32 is arranged at the first opening 312, and a first fitting surface 321 is formed on the side of the seat body 32 away from the cooling cavity 311. The first fitting surface 321 is provided with a first mounting hole 3211, and the terminal assembly 2 is provided with a second mounting hole 2312 corresponding to the first mounting hole 3211. The two connecting pipes 33 are respectively communicated with the two second openings 313 to form a liquid inlet pipeline 331 and a liquid outlet pipeline 332. The first mounting hole 3211 and the second mounting hole 2312 are connected by a fastener to tightly fit the terminal assembly 2 and the first fitting surface 321, and to close the first opening 312.

[0062] In the embodiment, the base body 31 is the main part of the cooling structure 3, and the cooling cavity 311 formed by the base body 31 is the main space for circulating the cooling liquid. The first opening 312 and the second opening 313 are oppositely arranged for mounting the seat body 32 and the connecting pipe 33. The seat body 32 is tightly attached to the terminal assembly 2 through the first attachment surface 321 and is fixedly mounted through the fastener, so as to not only fix the seat body 32 to the terminal assembly 2, but also close the first opening 312 to prevent the cooling liquid from leaking. The two connecting pipes 33 are respectively communicated with the two second openings 313 to form the liquid inlet pipe 331 and the liquid outlet pipe 332, so as to ensure the circulation of the cooling liquid. The fastener can be a bolt, a screw or the like, and the first attachment surface 321 is pressed against the terminal assembly 2 by screwing the bolt or the screw to prevent the cooling liquid from leaking.

[0063] It can be understood that the connecting pipe 33 can be connected to the second opening 313 in a threaded connection or welding manner to ensure the sealing of the connection. The specific connection manner is not limited here.

[0064] Please refer to Figure 7 In an embodiment, the positive terminal 21 and the negative terminal 22 each include a plug-in part 212 and a mounting part 231. The plug-in part 212 is arranged in the housing 1, one end of the plug-in part 212 is used for plug-in cooperation with the charging socket, and the other end of the plug-in part 212 is provided with the first connecting part 211 or the second connecting part 221. The mounting part 231 is sleeved on the outer wall of the plug-in part 212 and is formed with a second attachment surface 2311, and the second attachment surface 2311 is provided with a second mounting hole 2312. When the first mounting hole 3211 and the second mounting hole 2312 are connected by the fastener, the first attachment surface 321 and the second attachment surface 2311 are tightly attached.

[0065] In the embodiment, one end of the plug-in part 212 is communicated with the charging socket, and the other end is connected with the first connecting part 211 or the second connecting part 221, so as to realize power transmission. The mounting part 231 is sleeved on the outer wall of the plug-in part 212 to form the second attachment surface 2311, and the second attachment surface 2311 is connected with the first attachment surface 321 of the seat body 32 through the fastener, so that the first attachment surface 321 and the second attachment surface 2311 are tightly attached. In this way, the safety of the connection between the terminal assembly 2 and the cooling structure 3 is improved, and the heat dissipation effect of the liquid-cooled charging gun 100 is ensured. Preferably, the end of the plug-in part 212 away from the first connecting part 211 or the second connecting part 221 is provided with a split groove. It can be understood that the split groove arranged at the end of the plug-in part 212 away from the first connecting part 211 or the second connecting part 221 can improve the connection stability and the power transmission efficiency of the plug-in part 212.

[0066] Optionally, a sealing ring 34 is arranged between the first abutting surface 321 and the second abutting surface 2311, and the sealing ring 34 is used to improve the sealing performance of the first abutting surface 321 and the second abutting surface 2311, so as to prevent the leakage of the cooling liquid.

[0067] Referring to Figure 7 In an embodiment, one of the first abutting surface 321 and the second abutting surface 2311 is provided with a positioning pin 3212, and the other is provided with a positioning hole 2313. When the first abutting surface 321 and the second abutting surface 2311 are tightly abutted, the positioning pin 3212 is inserted into the positioning hole 2313.

[0068] In this embodiment, when assembling, the positioning pin 3212 can be inserted into the positioning hole 2313, so that the positions of the first abutting surface 321 and the second abutting surface 2311 can be quickly positioned, and the connection problem caused by the assembly error can be avoided.

[0069] Optionally, the positioning pin 3212 can be in a cylindrical or conical structure, and the shape of the positioning hole 2313 is matched with the positioning pin 3212, so that the positioning pin 3212 is more easily inserted into the positioning hole 2313.

[0070] Referring to Figure 7 In an embodiment, the mounting portion 231 is further provided with a resistance mounting hole 2314, and the liquid-cooled charging gun 100 further comprises a thermistor 23 arranged in the resistance mounting hole 2314, and the thermistor 23 is used to detect the temperature of the positive terminal 21 and the negative terminal 22.

[0071] In this embodiment, two thermistors 23 are arranged in the two resistance mounting holes 2314, respectively, and are used to detect the temperature of the positive terminal 21 and the negative terminal 22 in real time, so that the temperature abnormality can be found in time, and the safety of the liquid-cooled charging gun 100 is improved.

[0072] It can be understood that the thermistor 23 can be a negative temperature coefficient thermistor 23 (NTC) or a positive temperature coefficient thermistor 23 (PTC), which is not limited herein. The resistance value of the thermistor 23 changes with the temperature, and the change information is transmitted to the control unit through the signal line 432, and the control unit performs corresponding control operation according to the change signal, such as adjusting the flow of the cooling liquid or alarming, etc. This control mode is relatively common in the prior art, and will not be described herein.

[0073] Referring to Figures 4 to 6In an embodiment, the liquid-cooled charging gun 100 further comprises a plurality of tail copper bars 42, each liquid-cooled pipe 41 is connected with one tail copper bar 42 at one end away from the terminal assembly 2, along the extension direction of the tail copper bar 42, the tail copper bar 42 is sequentially provided with an inlet port 421, an adapter port 422 and a clamping port 423, the opening direction of the inlet port 421 is consistent with the extension direction of the tail copper bar 42, and is perpendicular to the opening direction of the adapter port 422 and the clamping port 423, and the inlet port 421 is in communication with the adapter port 422. Among them, the liquid-cooled pipe 41 is in communication with the inlet port 421, the adapter port 422 is used to communicate with the cooling liquid supply device, and the clamping port 423 is used for other mechanisms to clamp the tail copper bar 42.

[0074] In the embodiment, the inlet port 421 is in communication with the liquid-cooled pipe 41, the adapter port 422 is in communication with the cooling liquid supply device, and the cooling liquid enters the liquid-cooled pipe 41 through the inlet port 421 and flows out or flows in from the cooling liquid supply device through the adapter port 422. The clamping port 423 is used for other mechanisms to clamp the tail copper bar 42, thereby ensuring the stability of the tail copper bar 42.

[0075] It can be understood that the clamping port 423 can be fixed with the clamping mechanism by means of bolt connection or the like.

[0076] Please refer to Figure 4 In an embodiment, the opening direction of the adapter port 422 of the two tail copper bars 42 corresponding to each cooling structure 3 is opposite.

[0077] In the embodiment, the opening direction of the adapter port 422 of the two tail copper bars 42 corresponding to each cooling structure 3 is opposite, thereby facilitating the installation of the two adapter heads 4221 at the adapter port 422, and avoiding interference between the adapter heads 4221.

[0078] Please refer to Figure 4 In an embodiment, each adapter port 422 is provided with an adapter head 4221, and the adapter head 4221 is used to connect the adapter port 422 and the cooling liquid supply device.

[0079] It can be understood that the adapter head 4221 can be a quick connector or a flange joint, and the adapter port 422 can be quickly connected or disconnected with the cooling liquid supply device through the adapter head 4221.

[0080] Please refer to Figure 2 and Figure 3 In an embodiment, the liquid-cooled cable 4 further comprises a sleeve 43, the sleeve 43 is formed with a transmission cavity 433, four liquid-cooled pipes 41 are arranged in the transmission cavity 433, and a ground wire 431 and a plurality of signal wires 432 are further arranged in the transmission cavity 433. The shell 1 is further provided with a signal terminal 24 and a ground terminal 25, the ground terminal 25 is connected with the ground wire 431, and the signal terminal 24 is connected with the signal wire 432.

[0081] In the embodiment, the transmission cavity 433 formed by the sleeve 43 not only provides a protection space for the liquid cooling pipe 41, but also provides accommodation spaces for the ground wire 431 and the signal wire 432. The signal terminal 24 and the ground terminal 25 are connected with the signal wire 432 and the ground wire 431 respectively, so that the charging gun can perform signal communication and ground protection with other devices. In this way, the integration of the liquid cooling cable 4 can be improved, the signal transmission and the ground function of the liquid cooling charging gun 100 are ensured, and the liquid cooling pipe 41, the ground wire 431 and the signal wire 432 are also protected, thereby prolonging the service life of the liquid cooling cable 4.

[0082] Referring to Figure 2 In an embodiment, the shell 1 includes a gun shell 11, a gun head 12 and a rear support frame 13. The gun shell 11 is formed with a mounting cavity 111 and a third opening 112 communicating with the mounting cavity 111. The gun head 12 is arranged at the third opening 112, and the gun head 12 is provided with a first through hole 121 communicating with the third opening 112. The rear support frame 13 is detachably mounted in the first through hole 121, and the terminal assembly 2 is mounted on the rear support frame 13.

[0083] In the embodiment, the mounting cavity 111 of the gun shell 11 provides mounting spaces for various components of the charging gun. The terminal assembly 2 is mounted on the rear support frame 13, and the rear support frame 13 is detachably mounted in the first through hole 121, so that the installation and maintenance of the terminal assembly 2 can be facilitated. Preferably, the gun head is triangular in cross section. Corresponding to the gun head 12, the third opening 112 is triangular, so that the end of the gun head 12 close to the third opening 112 can be accommodated in the third opening 112.

[0084] It can be understood that the rear support frame 13 can be connected with the gun head 12 in a detachable manner by means of bolt connection or buckle connection.

[0085] Referring to Figure 2 In an embodiment, the gun shell 11 is further formed with a fourth opening 113 communicating with the mounting cavity 111, and the liquid cooling charging gun 100 further includes a cable binding assembly 5 arranged at the fourth opening 113 and used for clamping the liquid cooling cable 4.

[0086] In the embodiment, the cable binding assembly 5 at the fourth opening 113 can tightly clamp the liquid cooling cable 4, so as to prevent the liquid cooling cable 4 from shaking inside the liquid cooling charging gun 100. It can be understood that the cable binding assembly 5 can adopt an elastic clamping structure or a bolt clamping structure, so as to adjust the clamping force and ensure the fixing effect of the liquid cooling cable 4.

[0087] Referring to Figure 2In an embodiment, the wire bundling assembly 5 comprises a wire clamp body 51 and a wire clamp assembly 52. The wire clamp body 51 is arranged at the fourth opening 113. The wire clamp assembly 52 is arranged at a side of the wire clamp body 51 away from the mounting cavity 111, and the wire clamp assembly 52 is provided with an adjustable clamping through hole 521. The wire clamp body 51, the wire clamp assembly 52, and the wire clamp assembly 52 are all hollow structures.

[0088] In the embodiment, two wire clamp assemblies 52 are arranged, and the clamping through hole 521 is formed between the two wire clamp assemblies 52. The clamping through hole 521 of the wire clamp assembly 52 can be adjusted according to the thickness of the liquid cooling cable 4, so as to ensure the clamping effect. It can be understood that the two wire clamp assemblies 52 can be connected through a connecting member, such as a bolt, and the distance between the two wire clamp assemblies 52 is adjusted to adjust the size of the clamping through hole 521, so as to realize the adjustment of the clamping force.

[0089] Optionally, the wire bundling assembly 5 further comprises a tail sheath 55 arranged at the fourth opening 113, and the tail sheath 55 is used for fixing the liquid cooling pipe 41 and further preventing the liquid cooling pipe 41 from shaking.

[0090] Please refer to Figure 2 In an embodiment, the liquid cooling charging gun 100 further comprises a wire sealing body 53 arranged in the cavity, and the wire sealing body 53 is used for fixing the liquid cooling cable 4.

[0091] In the embodiment, the wire sealing body 53 is used for further fixing the liquid cooling cable 4, so as to prevent the liquid cooling cable 4 from loosening or shifting in the cavity. The wire sealing body 53 can be fixed in the cavity by means of gluing, buckling, or the like, so as to support and fix the liquid cooling cable 4.

[0092] Optionally, the mounting cavity 111 is further provided with a baffle 54, and the wire sealing body 53 is arranged through the baffle 54.

[0093] The utility model further proposes a charging system, the charging system includes liquid cooling charging gun 100 and charging pile and the like power supply equipment, the specific structure of this liquid cooling charging gun 100 refers to the above-mentioned embodiment, because the charging system adopts all the technical schemes of the above-mentioned all embodiments, so at least has all the beneficial effects brought by the technical scheme of the above-mentioned embodiment, here will not repeat again. Among them, the charging pile and the like power supply equipment are used for conveying electric energy and cooling liquid.

[0094] The above-mentioned is only the exemplary implementation of the utility model, and does not limit the patent range of the utility model, and all equivalent structure transformations made by using the utility model specification and the contents of the drawings, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A liquid-cooled charging gun, characterized by, The liquid-cooled charging gun comprises: a shell; a terminal assembly comprising a positive terminal and a negative terminal arranged in the shell, the positive terminal being provided with a first connecting portion, and the negative terminal being provided with a second connecting portion; two cooling structures, each of which is provided with a cooling cavity, an inlet pipe and an outlet pipe communicating with the cooling cavity, and the two cooling structures are connected with the positive terminal and the negative terminal respectively, so that the first connecting portion and the second connecting portion are located in the two cooling cavities respectively; and a liquid-cooled cable comprising four liquid-cooled pipes and wires arranged in each of the liquid-cooled pipes, the liquid-cooled cable being connected with the two cooling structures, so that the four liquid-cooled pipes communicate with the two inlet pipes and the two outlet pipes respectively, and the first connecting portion is connected and conducted with the two wires through two liquid-cooled pipes, and the second connecting portion is connected and conducted with the two wires through the other two liquid-cooled pipes.

2. The liquid-cooled charge gun of claim 1, wherein, Each of the cooling structures comprises: a base body formed with the cooling cavity, a first opening and two second openings communicating with the cooling cavity, the first opening and the second opening being oppositely arranged at two ends of the base body; a seat body arranged at the first opening, and a first fitting surface being formed on a side of the seat body away from the cooling cavity, the first fitting surface being provided with a first mounting hole, and the terminal assembly being provided with a second mounting hole corresponding to the first mounting hole; and two connecting pipes communicating with the two second openings respectively to form the inlet pipe and the outlet pipe; wherein the first mounting hole and the second mounting hole are connected by a fastener to tightly fit the terminal assembly and the first fitting surface, thereby closing the first opening.

3. The liquid-cooled charge gun of claim 2, wherein, The positive terminal and the negative terminal each comprise: a plug-in portion arranged in the shell, one end of the plug-in portion being used for plug-in cooperation with a charging socket, and the other end of the plug-in portion being provided with the first connecting portion or the second connecting portion; and a mounting portion sleeved on an outer wall of the plug-in portion and formed with a second fitting surface, the second fitting surface being provided with the second mounting hole; wherein the first fitting surface and the second fitting surface are tightly fitted when the first mounting hole and the second mounting hole are connected by the fastener.

4. The liquid-cooled charge gun of claim 3, wherein, One of the first fitting surface and the second fitting surface is provided with a positioning pin, and the other one is provided with a positioning hole; wherein the positioning pin is inserted into the positioning hole when the first fitting surface and the second fitting surface are tightly fitted.

5. The liquid-cooled charge gun of claim 3, wherein, The mounting portion is further provided with a resistance mounting hole, and the liquid-cooled charging gun further comprises a thermistor arranged in the resistance mounting hole, the thermistor being used for detecting the temperature of the positive terminal and the negative terminal.

6. The liquid-cooled charge gun of claim 1, wherein, The liquid-cooled charging gun further comprises a plurality of tail copper bars, one end of each of the liquid-cooled pipes is connected with one of the tail copper bars, along the extension direction of the tail copper bars, the tail copper bars are sequentially provided with an inlet port, an adapter port and a clamping port, the opening direction of the inlet port is consistent with the extension direction of the tail copper bar, and is perpendicular to the opening direction of the adapter port and the clamping port, the inlet port is in communication with the adapter port. The liquid-cooled pipe is in communication with the inlet port, the adapter port is used to be in communication with a cooling liquid supply device, and the clamping port is used for clamping the tail copper bar by other mechanisms.

7. The liquid-cooled charge gun of claim 6, wherein, The opening direction of the adapter port of each of the two tail copper bars corresponding to the cooling structure is opposite. And / or, each of the adapter ports is provided with an adapter head used to connect the adapter port and the cooling liquid supply device.

8. The liquid-cooled charging gun of any one of claims 1 to 7, wherein, The liquid-cooled cable further comprises a sleeve, the sleeve is formed with a transmission cavity, four liquid-cooled pipes are arranged in the transmission cavity, and the transmission cavity is further provided with a ground wire and a plurality of signal lines. The shell is further provided with a signal terminal and a ground terminal, the ground terminal is connected with the ground wire, and the signal terminal is connected with the signal line.

9. The liquid-cooled charge gun of claim 8, wherein, The shell comprises: a gun shell, the gun shell is formed with a mounting cavity and a third opening in communication with the mounting cavity; a gun head, the gun head is arranged at the third opening, and the gun head is provided with a first through hole in communication with the third opening; and a rear support frame, the rear support frame is detachably mounted in the first through hole, and the terminal assembly is mounted on the rear support frame.

10. The liquid-cooled charge gun of claim 9, wherein, The gun head is triangular in cross section, and the third opening is triangular corresponding to the gun head.

11. The liquid-cooled charge gun of claim 9, wherein, The liquid-cooled charging gun is further provided with a fourth opening in communication with the mounting cavity, and further comprises a cable binding assembly, the cable binding assembly comprises a cable clamp main body and a cable clamp assembly, the cable clamp main body is arranged at the fourth opening, the cable clamp assembly is arranged on the side of the cable clamp main body away from the mounting cavity, and the cable clamp assembly is provided with an adjustable clamping through hole.

12. The liquid-cooled charge gun of claim 11, wherein, The cable clamp assembly is provided with two cable clamp assemblies, the clamping through hole is formed between the two cable clamp assemblies, and the two cable clamp assemblies are connected by a connecting piece.

13. The liquid-cooled charge gun of claim 3, wherein, The plug-in part is provided with a split groove at one end away from the first connecting part or the second connecting part.

14. A charging system, characterized by The charging system comprises the liquid-cooled charging gun according to any one of claims 1 to 13.

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