Liquid cooling charging gun and charging equipment
By setting up an inlet manifold assembly and a liquid cooling pipe in the liquid-cooled charging gun, the flow direction of the coolant is changed, which solves the problem of uneven heat dissipation of the wires inside the charging cable, and improves the charging power and cable length.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-04-10
AI Technical Summary
In existing liquid-cooled charging guns, uneven heat dissipation in the wires within the charging cable leads to a large temperature difference between the upstream and downstream sides of the charging cable, causing thermal cascading problems and limiting charging power and cable length.
By setting up an inlet manifold assembly and multiple liquid cooling pipes in the charging cable, the coolant flows in a direction perpendicular to the conductor, achieving uniform heat dissipation upstream and downstream of the conductor. Multiple connectors are used to connect the inlet manifold assembly and the liquid cooling pipes, changing the coolant flow direction to avoid thermal cascading.
It achieves uniform heat dissipation upstream and downstream of the conductor, increases the upper limit of charging power and cable length, and solves the problem of uneven heat dissipation.
Smart Images
Figure CN121822181A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of charging gun technology, and in particular to a liquid-cooled charging gun and charging device. Background Technology
[0002] Some existing liquid-cooled charging guns and their charging cables use liquid cooling to dissipate heat from the internal wires. In existing charging cables, coolant typically flows into the liquid cooling pipe from one end of the cable and out from the other. However, the coolant temperature increases further downstream, leading to uneven heat dissipation from the coolant to the wires. This results in a significant temperature difference between the upstream and downstream wires, causing thermal cascading problems. Furthermore, due to limitations on the maximum operating temperature rise of the wires, uneven heat dissipation also restricts the charging power and wire length of the charging cable. Summary of the Invention
[0003] This application provides a liquid-cooled charging gun and charging device to solve the problem of uneven heat dissipation of the wires in the charging cable in existing liquid-cooled charging guns, which leads to limitations in the charging power and cable length of the charging cable.
[0004] To address the aforementioned technical problems, this application proposes a liquid-cooled charging gun, comprising a charging cable. The charging cable includes a liquid inlet manifold assembly, a first liquid-cooling pipe, a first wire, a second liquid-cooling pipe, a second wire, a plurality of first connectors, and a plurality of second connectors. The liquid inlet manifold assembly extends axially and is filled with coolant. The first liquid-cooling pipe extends axially. The first wire extends axially and passes through the first liquid-cooling pipe. The second liquid-cooling pipe extends axially. The second wire extends axially and passes through the second liquid-cooling pipe. The plurality of first connectors connect the liquid inlet manifold assembly and the first liquid-cooling pipe. The plurality of second connectors connect the liquid inlet manifold assembly and the second liquid-cooling pipe.
[0005] The liquid inlet manifold assembly is provided with multiple first liquid inlet ports, and a first connector connects to the first liquid inlet ports. The size of the first liquid inlet port is smaller than the cross-sectional size of the liquid inlet manifold assembly along the vertical axial direction.
[0006] The first liquid cooling pipe is provided with multiple first liquid cooling connection ports, and the first connector is connected between the corresponding first liquid inlet connection port and the first liquid cooling connection port.
[0007] The dimensions of the first liquid inlet, the first liquid cooling inlet, and the cross-sectional dimensions of the first connector along the direction perpendicular to the axial direction are all the same.
[0008] Among them, a plurality of first liquid cooling connection ports are arranged in an array along the axial direction of the first liquid cooling pipe; and / or, a plurality of second liquid cooling connection ports are arranged in an array along the axial direction of the second liquid cooling pipe.
[0009] The adjacent first liquid inlet ports are spaced at equal intervals.
[0010] Among them, a plurality of first connectors are vertically connected between the liquid inlet manifold assembly and the first liquid cooling pipe; and / or, a plurality of second connectors are vertically connected between the liquid inlet manifold assembly and the second liquid cooling pipe.
[0011] Wherein, the cross-sectional dimension of the first connector in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly in the axial direction and the cross-sectional dimension of the first liquid cooling pipe in the axial direction; and / or, the cross-sectional dimension of the second connector in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly in the axial direction and the cross-sectional dimension of the second liquid cooling pipe in the axial direction.
[0012] The liquid inlet manifold assembly includes a liquid inlet manifold, which is connected to the first liquid cooling pipe and the second liquid cooling pipe.
[0013] The liquid-cooled charging gun also includes a liquid outlet manifold assembly, multiple third connectors, and multiple fourth connectors. The liquid outlet manifold assembly extends along its axial direction. The multiple third connectors are connected between the liquid outlet manifold assembly and the first liquid cooling pipe. The multiple fourth connectors are connected between the liquid outlet manifold assembly and the second liquid cooling pipe.
[0014] The liquid outlet manifold assembly includes a liquid outlet manifold, which is connected to the first liquid cooling pipe and the second liquid cooling pipe respectively.
[0015] Among them, multiple third connectors are vertically connected between the first liquid cooling pipe and the liquid outlet manifold; and / or, multiple fourth connectors are vertically connected between the second liquid cooling pipe and the liquid outlet manifold.
[0016] The liquid-cooled charging gun also includes an inlet pipe that extends along its axial direction. An inlet manifold assembly, a first connector, a first liquid-cooling pipe, a second connector, a third connector, an outlet manifold assembly, and a fourth connector are arranged around the outer periphery of the inlet pipe.
[0017] The liquid-cooled charging gun includes a head end, a tail end, and an inlet pipe. The head end is used to connect to the vehicle end; the tail end is used to connect to the charging pile end; the inlet pipe extends along its axial direction, and the coolant in the inlet pipe moves from the tail end to the head end to cool the head end.
[0018] The liquid-cooled charging gun also includes a protective sleeve, which has a cooling chamber and a liquid inlet and an outlet connected to the cooling chamber. The liquid inlet is connected to an inlet pipe, and the liquid outlet is connected to an inlet manifold assembly. A first terminal is provided at one end of the first wire near the gun head, and a second terminal is provided at one end of the second wire near the gun head. The protective sleeve is at least partially fitted around the first and second terminals so that the first and second terminals are at least partially located in the cooling chamber.
[0019] To address the aforementioned technical problems, this application proposes a charging device, including the liquid-cooled charging gun described above.
[0020] This application's liquid-cooled charging gun includes a charging cable. The charging cable includes a liquid inlet manifold assembly, a first liquid-cooling pipe, a first wire, a second liquid-cooling pipe, a second wire, a plurality of first connectors, and a plurality of second connectors. The liquid inlet manifold assembly extends axially. The liquid inlet manifold assembly can be filled with coolant. The first liquid-cooling pipe extends axially. The first wire extends axially and passes through the first liquid-cooling pipe. The second liquid-cooling pipe extends axially. The second wire extends axially and passes through the second liquid-cooling pipe. The plurality of first connectors connect the liquid inlet manifold assembly and the first liquid-cooling pipe. The plurality of second connectors connect the liquid inlet manifold assembly and the second liquid-cooling pipe.
[0021] This application connects the liquid inlet manifold assembly and the first liquid cooling pipe through multiple first connectors and connects the liquid inlet manifold assembly and the second liquid cooling pipe through multiple second connectors, so that the cooling flow direction of the coolant is changed from parallel to the direction of the conductor to perpendicular to the direction of the conductor, so that the heat dissipation is uniformly distributed upstream and downstream of the conductor and thermal cascading problem is not generated, thereby increasing the charging power and the upper limit of the conductor length. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a first partial structural schematic diagram of the first embodiment of the liquid-cooled charging gun of this application; Figure 2 This is a partial structural schematic diagram of the first embodiment of the liquid-cooled charging gun of this application; Figure 3 This is a schematic diagram of the first cross-section of the charging cable in the liquid-cooled charging gun of this application; Figure 4 This is a second partial structural schematic diagram of the first embodiment of the liquid-cooled charging gun of this application; Figure 5 yes Figure 4 A schematic diagram of the cross-section of AA is shown below; Figure 6 yes Figure 4 A schematic diagram of the cross-section of BB shown; Figure 7 yes Figure 4 A schematic diagram of the cross-section of CC is shown; Figure 8 This is a schematic diagram of the second cross-section of the charging cable in the second embodiment of the liquid-cooled charging gun of this application; Figure 9 This is a schematic diagram of the third cross-section of the charging cable in the third embodiment of the liquid-cooled charging gun of this application; Figure 10 This is a schematic diagram of the structure of the nozzle end of this application; Figure 11 This is a cross-sectional schematic diagram of the nozzle end of this application; Figure 12 This is a schematic diagram of the structure of the gun tail end in this application.
[0023] Reference numerals: 10. Liquid-cooled charging gun; 11. Charging cable; 111. Liquid inlet manifold assembly; 1110. Liquid inlet manifold; 1111. First liquid inlet connection port; 1112. Second liquid inlet connection port; 112. Liquid outlet manifold assembly; 1120. Liquid outlet manifold; 1121. First liquid outlet connection port; 1122. Second liquid outlet connection port; 113. First liquid cooling pipe; 1130. First wire; 1131. First liquid cooling connection port; 1132. Third liquid cooling connection port; 114. Second liquid cooling pipe; 11 40. Second wire; 1141. Second liquid cooling connection port; 1142. Fourth liquid cooling connection port; 1151. First connector; 1152. Second connector; 1153. Third connector; 1154. Fourth connector; 1155. Fifth connector; 116. Liquid inlet pipe; 12. Nozzle end; 13. Nozzle tail end; 121. Sheath sleeve; 1211. Sheath cooling chamber; 1212. Sheath liquid inlet; 1213. Sheath liquid outlet; 122. First terminal; 123. Second terminal; 1214. Seal. Detailed Implementation
[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0026] The liquid-cooled charging gun and charging device provided by the present invention will be described in detail below with reference to embodiments.
[0027] Please see Figures 1 to 3 , Figure 1 This is a first partial structural schematic diagram of the first embodiment of the liquid-cooled charging gun of this application. Figure 2 This is a partial structural schematic diagram of the first embodiment of the liquid-cooled charging gun of this application. Figure 3 This is a first cross-sectional schematic diagram of the charging cable in the liquid-cooled charging gun of this application. This application provides a liquid-cooled charging gun. The liquid-cooled charging gun 10 includes a charging cable 11. The charging cable 11 includes an inlet manifold assembly 111, a first liquid-cooling pipe 113, a first wire 1130, a second liquid-cooling pipe 114, a second wire 1140, a plurality of first connectors 1151, and a plurality of second connectors 1152. The inlet manifold assembly 111 extends axially and is filled with coolant. The first liquid-cooling pipe 113 extends axially. The first wire 1130 extends axially and passes through the first liquid-cooling pipe 113. The second liquid-cooling pipe 114 extends axially. The second wire 1140 extends axially and passes through the second liquid-cooling pipe 114. The plurality of first connectors 1151 connect the inlet manifold assembly 111 and the first liquid-cooling pipe 113. Multiple second connectors 1152 are connected between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114. The first direction is defined as the axial direction along the charging cable 11.
[0028] The inlet manifold assembly 111 is used for coolant inflow. The axial direction can be, but is not limited to, the length extension direction of the inlet manifold assembly 111. The coolant can be, but is not limited to, silicone oil, electronic fluorinated fluid, perfluoropolyether grease, perfluoropolyether lubricating oil, etc.
[0029] The first liquid cooling pipe 113 surrounds the outer periphery of the first conductor 1130. The second liquid cooling pipe 114 surrounds the outer periphery of the second conductor 1140. The liquid inlet manifold assembly 111, the first liquid cooling pipe 113, the first conductor 1130, the second liquid cooling pipe 114, and the second conductor 1140 all extend along their own axial direction. The number of first connectors 1151 can be, but is not limited to, two, three, or more than four. One end of the first connector 1151 is connected to the liquid inlet manifold assembly 111, and the other end is connected to the first liquid cooling pipe 113. The number of second connectors 1152 can be, but is not limited to, two, three, or more than four. One end of the second connector 1152 is connected to the liquid inlet manifold assembly 111, and the other end is connected to the second liquid cooling pipe 114. The first conductor 1130 can be set as a positive conductor, and the second conductor 1140 can be set as a negative conductor; or, the first conductor 1130 can be set as a negative conductor, and the second conductor 1140 can be set as a positive conductor.
[0030] Coolant in the inlet manifold assembly 111 flows into the first liquid cooling pipe 113 through multiple first connectors 1151. The first conductor 1130 in the first liquid cooling pipe 113 is immersed in the coolant and directly contacts the coolant for heat dissipation. Coolant in the inlet manifold assembly 111 flows into the second liquid cooling pipe 114 through multiple second connectors 1152. The second conductor 1140 in the second liquid cooling pipe 114 is immersed in the coolant and directly contacts the coolant for heat dissipation.
[0031] During operation, the coolant in the inlet manifold assembly 111 flows into the first liquid cooling pipe 113 through multiple first connectors 1151 and into the second liquid cooling pipe 114 through multiple second connectors 1152, respectively contact-cooling the first conductor 1130 and the second conductor 1140. This arrangement directs the coolant flow along the direction of the first connectors 1151 and the second connectors 1152, that is, perpendicular to the axial direction of the charging cable 11, allowing both upstream and downstream conductors to directly exchange heat with the low-temperature coolant that has not yet undergone heat exchange. This solution avoids the situation where the coolant flow is along the axial direction of the charging cable 11, i.e., the coolant cools the upstream conductor first and then the downstream conductor, causing the downstream conductor to come into contact with the high-temperature coolant after heat exchange, reducing the cooling effect and causing the coolant temperature to gradually increase along the axial direction of the charging cable 11, leading to thermal cascading problems. By changing the cooling direction of the coolant, the first conductor 1130 and the second conductor 1140 dissipate heat evenly with the coolant, and there is no large temperature difference in the axial direction of the charging cable 11, thereby increasing the power limit of the charging cable 11 and the cable length that are limited by temperature rise.
[0032] In one specific embodiment, the above-mentioned liquid inlet manifold assembly 111, first liquid cooling pipe 113, first wire 1130, second liquid cooling pipe 114, and second wire 1140 can all extend along the axial direction of the charging cable 11 and be arranged parallel to each other.
[0033] Please see Figures 1 to 3 In some embodiments, the liquid inlet manifold assembly 111 is provided with a plurality of first liquid inlet ports 1111. A first connector 1151 communicates with the first liquid inlet ports 1111. The size of the first liquid inlet ports 1111 is smaller than the cross-sectional size of the liquid inlet manifold assembly 111 along the vertical axial direction. Let the second direction be the vertical axial direction of the charging cable 11. The second direction is perpendicular to the first direction.
[0034] The number of first liquid inlet ports 1111 may be, but is not limited to, two, three, or more than four. Multiple first liquid inlet ports 1111 are disposed on the outer periphery of the liquid inlet manifold 1110. The second direction is perpendicular to the axis of the charging cable 11 and is perpendicular to the first direction. The cross-section of the first liquid inlet port 1111 may be, but is not limited to, circular, rectangular, or other cross-sectional shapes that facilitate coolant flow.
[0035] Because the size of the first inlet connection 1111 is smaller than the cross-sectional size of the inlet manifold assembly 111 along the second direction, the resistance to the coolant flowing into the first inlet connection 1111 after entering the inlet manifold assembly 111 is greater than the flow resistance within the inlet manifold assembly 111. Therefore, after entering the inlet manifold assembly 111, the coolant will first fill the inlet manifold assembly 111, and then flow into the multiple first inlet connections 1111 and the corresponding multiple first connectors 1151. This avoids the coolant flowing directly into the first inlet connection 1111 after entering the inlet manifold assembly 111, thus preventing coolant from flowing into different first inlet connections 1111 simultaneously.
[0036] In some embodiments, the liquid inlet manifold assembly 111 is further provided with a plurality of second liquid inlet ports 1112. The second liquid inlet ports 1112 are connected to corresponding second connectors 1152. The size of the second liquid inlet ports 1112 is smaller than the cross-sectional size of the liquid inlet manifold assembly 111 in the vertical axial direction.
[0037] The way in which the second liquid inlet connection port 1112 is set in the liquid inlet manifold assembly 111 can be the same as or similar to the way in which the first liquid inlet connection port 1111 is set in the liquid inlet manifold assembly 111, and will not be described again here.
[0038] Please see Figures 1 to 3 In some embodiments, the first liquid cooling pipe 113 is provided with a plurality of first liquid cooling connection ports 1131. The first connector 1151 is connected between the corresponding first liquid inlet connection port 1111 and the first liquid cooling connection port 1131.
[0039] The first liquid cooling pipe 113 has multiple first liquid cooling connection ports 1131 on its outer periphery. The first connector 1151 can extend along the second direction or be inclined to the second direction.
[0040] The first connector 1151 is connected between the corresponding first liquid inlet connector 1111 and the first liquid cooling connector 1131, so that the coolant can flow from the liquid inlet manifold assembly 111 into the first connector 1151 through the first liquid inlet connector 1111, and then flow from the first connector 1151 into the first liquid cooling pipe 113 through the first liquid cooling connector 1131.
[0041] In some embodiments, the second liquid cooling pipe 114 is further provided with a plurality of second liquid cooling connection ports 1141. The second connector 1152 communicates between the corresponding second liquid inlet connection port 1112 and the second liquid cooling connection port 1141.
[0042] The arrangement of the second connector 1152 between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114 can be the same as or similar to the arrangement of the first connector 1151 between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113, and will not be described in detail here.
[0043] In some embodiments, the dimensions of the first liquid inlet 1111, the first liquid cooling inlet 1131, and the cross-sectional dimensions of the first connector 1151 along the direction perpendicular to the axial direction are all the same.
[0044] The dimensions of the first liquid inlet connection 1111, the first liquid cooling connection 1131, and the first connector 1151 along the axial direction can be the same or different, but all are smaller than the cross-sectional dimension of the liquid inlet manifold assembly 111 along the second direction. In this embodiment, the dimensions of the first liquid inlet connection 1111, the first liquid cooling connection 1131, and the first connector 1151 along the axial direction are the same.
[0045] By setting the dimensions of the first liquid inlet connection 1111, the first liquid cooling connection 1131, and the cross-sectional dimensions of the first connector 1151 in the direction perpendicular to the axial direction to be the same, the cross-sectional dimensions of the first connector 1151 in the direction perpendicular to the axial direction are made equal everywhere, and the flow resistance of the coolant is the same, thereby ensuring uniform flow in the different first connectors 1151 between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113.
[0046] In some embodiments, the dimensions of the second liquid inlet connection 1112, the second liquid cooling connection 1141, and the cross-sectional dimensions of the second connector 1152 along the direction perpendicular to the axial direction are all the same. The dimensions of the second liquid inlet connection 1112, the second liquid cooling connection 1141, and the cross-sectional configuration of the second connector 1152 may be the same as or similar to the dimensions of the first liquid inlet connection 1111, the first liquid cooling connection 1131, and the cross-sectional dimensions of the first connector 1151, and will not be described in detail here.
[0047] Please see Figures 1 to 3 In some embodiments, a plurality of first liquid cooling ports 1131 are arranged in an array along the axial direction of the first liquid cooling pipe 113. And / or, a plurality of second liquid cooling ports 1141 are arranged in an array along the axial direction of the second liquid cooling pipe 114.
[0048] The first liquid cooling pipe 113 and the second liquid cooling pipe 114 are both axially oriented in the first direction. Multiple first liquid cooling connection ports 1131 may be arranged in an array along the first direction or not in an array along the first direction.
[0049] And / or, the multiple second liquid cooling ports 1141 may be arranged in an array along the first direction or not in an array along the first direction.
[0050] In this embodiment, multiple first liquid cooling connection ports 1131 are arranged in an array along a first direction, so that multiple first connectors 1151 are arranged in an array along the first direction to connect to the multiple first liquid cooling connection ports 1131.
[0051] In this embodiment, a plurality of second liquid cooling ports 1141 are arranged in an array along a first direction, so that a plurality of second connectors 1152 are arranged in an array along the first direction to connect to the plurality of second liquid cooling ports 1141.
[0052] Multiple first liquid cooling connection ports 1131 are arranged in an array to facilitate the fabrication of the first liquid cooling pipe 113. The flow direction of the coolant flowing out of the inlet manifold assembly 111 is neat and uniform along the first connector 1151, making the cooling effect more uniform.
[0053] In some embodiments, similarly, the second liquid cooling ports 1141 are arranged in an array to facilitate the fabrication of the second liquid cooling pipes 114. The flow direction of the coolant flowing out of the inlet manifold assembly 111 is neat and uniform along the second connector 1152, making the cooling effect more uniform.
[0054] In some embodiments, a plurality of first liquid inlet ports 1111 are arranged in an array along a first direction. And / or, a plurality of second liquid inlet ports 1112 are arranged in an array along the first direction. The above-described limitations result in a more uniform cooling effect.
[0055] In some embodiments, adjacent first liquid inlet ports 1111 are equally spaced.
[0056] The adjacent first liquid inlet ports 1111 may be arranged at equal intervals, but are not limited to: unequal intervals between adjacent first liquid inlet ports 1111; unequal intervals between some adjacent first liquid inlet ports 1111; or unequal intervals between some adjacent first liquid inlet ports 1111, etc.
[0057] In this embodiment, adjacent first liquid inlet ports 1111 are equally spaced to ensure that the flow resistance of different first liquid inlet ports 1111 is equal. Coolant flows evenly and in equal amounts from multiple first liquid inlet ports 1111 into multiple first connectors 1151, making the cooling process more uniform along the axial direction of the charging cable 11.
[0058] In some embodiments, adjacent second liquid inlet ports 1112 may be arranged at equal intervals; or, adjacent second liquid inlet ports 1112 may be arranged at unequal intervals; or, some adjacent second liquid inlet ports 1112 may be arranged at equal intervals; or, some adjacent second liquid inlet ports 1112 may be arranged at unequal intervals, etc.
[0059] In this embodiment, adjacent second liquid inlet ports 1112 are equally spaced to ensure that the flow resistance of different second liquid inlet ports 1112 is equal. Coolant flows evenly and in equal amounts from multiple second liquid inlet ports 1112 into multiple second connectors 1152, making the cooling process more uniform along the axial direction of the charging cable 11.
[0060] In some embodiments, a plurality of first connectors 1151 are vertically connected between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113. And / or, a plurality of second connectors 1152 are vertically connected between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114.
[0061] Among them, multiple first connectors 1151 can be vertically or obliquely connected between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113.
[0062] And / or, multiple second connectors 1152 may be vertically or obliquely connected between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114.
[0063] In this embodiment, multiple first connectors 1151 are vertically connected between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113 to reduce flow resistance and make it easier for coolant to enter the corresponding first connector 1151.
[0064] And / or, multiple second connectors 1152 are vertically connected between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114 to reduce flow resistance and make it easier for coolant to enter the corresponding first connector 1151.
[0065] Please see Figures 4 to 7 , Figure 4 This is a second partial structural schematic diagram of the first embodiment of the liquid-cooled charging gun of this application. Figure 5 yes Figure 4 The diagram shows a cross-section of AA. Figure 6 yes Figure 4 The cross-sectional schematic diagram of BB is shown below. Figure 7 yes Figure 4 A schematic cross-sectional view of CC is shown. (Combined with...) Figures 1 to 3 In some embodiments, the cross-sectional dimension of the first connector 1151 in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly 111 in the axial direction and the cross-sectional dimension of the first liquid cooling pipe 113 in the axial direction. And / or, the cross-sectional dimension of the second connector 1152 in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly 111 in the axial direction and the cross-sectional dimension of the second liquid cooling pipe 114 in the axial direction.
[0066] Specifically, when the cross-sectional dimension of the first liquid inlet 1111 perpendicular to the axial direction is greater than the cross-sectional dimension of the first connector 1151 perpendicular to the axial direction, the cross-sectional dimension of the first connector 1151 perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly 111 and the cross-sectional dimension of the first liquid cooling pipe 113 in the axial direction. This makes the flow resistance of the coolant in the first connector 1151 greater than the flow resistance in the liquid inlet manifold assembly 111, thus preventing the coolant from flowing directly into the first connector 1151 after entering the liquid inlet manifold assembly 111. This prevents the coolant from flowing into different first connectors 1151 at the same time.
[0067] And / or, similarly, when the cross-sectional dimension of the second inlet connection 1112 perpendicular to the axial direction is greater than the cross-sectional dimension of the second connector 1152 perpendicular to the axial direction, the cross-sectional dimension of the second connector 1152 perpendicular to the axial direction is smaller than the cross-sectional dimension of the inlet manifold assembly 111 and the cross-sectional dimension of the second liquid cooling pipe 114 in the axial direction. This makes the flow resistance of the coolant in the second connector 1152 greater than the flow resistance in the inlet manifold assembly 111, thus preventing the coolant from flowing directly into the second connector 1152 after entering the inlet manifold assembly 111. This results in different second connectors 1152 not being able to receive coolant at the same time.
[0068] In some embodiments, the cross-sectional dimension of the third connector 1153 in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid outlet manifold assembly 112 in the axial direction and the cross-sectional dimension of the first liquid cooling pipe 113 in the axial direction. And / or, the cross-sectional dimension of the fourth connector 1154 in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid outlet manifold assembly 112 in the axial direction and the cross-sectional dimension of the second liquid cooling pipe 114 in the axial direction.
[0069] The cross-sectional configuration of the third connector 1153 and the fourth connector 1154 can be the same as or similar to the cross-sectional size configuration of the first connector 1151 and the second connector 1152, and will not be described in detail here.
[0070] Please see Figure 8 , Figure 8 This is a schematic diagram of the second cross-section of the charging cable in the second embodiment of the liquid-cooled charging gun of this application. Combined with... Figures 1 to 7 In some embodiments, the liquid inlet manifold assembly 111 includes a liquid inlet manifold 1110. The liquid inlet manifold 1110 is connected to the first liquid cooling pipe 113 and the second liquid cooling pipe 114, respectively.
[0071] The liquid inlet manifold assembly 111 may include one liquid inlet manifold 1110 and two liquid inlet manifolds 1110.
[0072] In this embodiment, the liquid inlet manifold assembly 111 may include a liquid inlet manifold 1110. A first liquid inlet connection 1111 and a second liquid inlet connection 1112 are both disposed on the liquid inlet manifold 1110. The liquid inlet manifold 1110 is connected to a first connector 1151 and a second connector 1152, respectively. The liquid inlet manifold 1110 is connected to a first liquid cooling pipe 113 via the first connector 1151. The liquid inlet manifold 1110 is connected to a second liquid cooling pipe 114 via the second connector 1152.
[0073] By limiting the space occupied by a single liquid inlet manifold 1110, the space utilization rate of the charging cable 11 is improved while achieving the liquid cooling effect.
[0074] In other embodiments, one liquid inlet manifold 1110 is connected to the first liquid cooling pipe 113 via a first connector 1151; the other liquid inlet manifold 1110 is connected to the second liquid cooling pipe 114 via a second connector 1152. A first liquid inlet port 1111 is provided on one liquid inlet manifold 1110. A second liquid inlet port 1112 is provided on the other liquid inlet manifold 1110.
[0075] By limiting the two inlet manifolds 1110, the total flow rate of coolant can be increased, allowing more coolant to participate in the heat exchange process, thereby improving the cooling efficiency of the charging cable 11.
[0076] Please see Figures 1 to 8 In some embodiments, the liquid-cooled charging gun 10 further includes an outlet manifold assembly 112, a plurality of third connectors 1153, and a plurality of fourth connectors 1154. The outlet manifold assembly 112 extends along its axial direction. The plurality of third connectors 1153 communicate between the outlet manifold assembly 112 and the first liquid cooling pipe 113. The plurality of fourth connectors 1154 communicate between the outlet manifold assembly 112 and the second liquid cooling pipe 114.
[0077] The outlet manifold assembly 112 is used to discharge coolant. The number of third connectors 1153 can be, but is not limited to, two, three, or more than four. The number of fourth connectors 1154 can be, but is not limited to, two, three, or more than four. The number of first connectors 1151 and third connectors 1153 communicating with the first liquid cooling pipe 113 can be arranged in a one-to-one correspondence, ensuring that the inflow and outflow of the first liquid cooling pipe 113 are equal. The number of second connectors 1152 and fourth connectors 1154 communicating with the second liquid cooling pipe 114 can be arranged in a one-to-one correspondence, ensuring that the inflow and outflow of the second liquid cooling pipe 114 are equal.
[0078] During operation, the coolant, after heat exchange in the first liquid cooling pipe 113 and the second liquid cooling pipe 114, flows into the outlet manifold assembly 112 through multiple third connectors 1153 and multiple fourth connectors 1154. This arrangement directs the coolant flow along the direction of the third connectors 1153 and the fourth connectors 1154, allowing the coolant to be discharged into the outlet manifold assembly 112 as quickly as possible after heat exchange. This creates a smooth flow path for the coolant along the second direction, efficiently cooling the first conductor 1130 and the second conductor 1140.
[0079] In some embodiments, the liquid outlet manifold assembly 112 is arranged parallel to the liquid inlet manifold assembly 111, the first liquid cooling pipe 113, and the second liquid cooling pipe 114 along a first direction. The first connector 1151, the second connector 1152, the third connector 1153, and the fourth connector 1154 all have the same structure.
[0080] In some embodiments, the first liquid cooling pipe 113 is provided with a plurality of third liquid cooling connection ports 1132. The second liquid cooling pipe 114 is provided with a plurality of fourth liquid cooling connection ports 1142. The liquid outlet manifold assembly 112 is provided with a plurality of first liquid outlet connection ports 1121 and a plurality of second liquid outlet connection ports 1122. The arrangement of the third connector 1153 between the liquid outlet manifold assembly 112 and the first liquid cooling pipe 113 can be the same as or similar to the arrangement of the first connector 1151 between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113, and will not be described further here. The arrangement of the fourth connector 1154 between the liquid outlet manifold assembly 112 and the second liquid cooling pipe 114 can be the same as or similar to the arrangement of the second connector 1152 between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114, and will not be described further here.
[0081] Please see Figure 9 , Figure 9 This is a schematic diagram of the third cross-section of the charging cable in the third embodiment of the liquid-cooled charging gun of this application. Combined with... Figures 1 to 8 In other embodiments, the liquid-cooled charging gun 10 further includes a plurality of fifth connectors 1155. The plurality of fifth connectors 1155 are connected between the first liquid cooling pipe 113 and the second liquid cooling pipe 114. The liquid-cooled charging gun 10 does not have second connectors 1152 and third connectors 1153, but only has a plurality of first connectors 1151, a plurality of fourth connectors 1154, and a plurality of fifth connectors 1155. The number of fifth connectors 1155 can be, but is not limited to, two, three, or more than four.
[0082] During operation, the coolant flows from the inlet manifold assembly 111 into the first liquid cooling pipe 113 via multiple first connectors 1151, first cooling the first conductor 1130. Then, it flows from the first liquid cooling pipe 113 into the second liquid cooling pipe 114 via multiple fifth connectors 1155, cooling the second conductor 1140. Finally, it flows from the second liquid cooling pipe 114 into the outlet manifold assembly 112 via multiple fourth connectors 1154. By setting multiple fifth connectors 1155, the arrangement of the first liquid cooling pipe 113 and the second liquid cooling pipe 114 is changed from a parallel relationship to a series relationship. This allows the coolant to fully cool the first conductor 1130 and the second conductor 1140 before entering circulation, improving the cooling utilization rate of the coolant. Furthermore, changing the coolant flow direction from along the first direction to along the second direction ensures uniform heat dissipation from the first conductor 1130 and the second conductor 1140, thus solving the problem of thermal cascading.
[0083] In some embodiments, the liquid outlet manifold assembly 112 includes a liquid outlet manifold 1120. The liquid outlet manifold 1120 is connected to the first liquid cooling pipe 113 and the second liquid cooling pipe 114, respectively.
[0084] The liquid outlet manifold assembly 112 may include one liquid outlet manifold 1120 and two liquid outlet manifolds 1120.
[0085] In this embodiment, the liquid outlet manifold assembly 112 may include a liquid outlet manifold 1120. A first liquid outlet connection port 1121 and a second liquid outlet connection port 1122 are both disposed on the liquid outlet manifold 1120. The liquid outlet manifold 1120 is connected to a third connector 1153 and a fourth connector 1154, respectively. Specifically, the liquid outlet manifold 1120 is connected to a first liquid cooling pipe 113 via the third connector 1153. The liquid outlet manifold 1120 is connected to a second liquid cooling pipe 114 via the fourth connector 1154.
[0086] By limiting the space occupied by a single liquid outlet manifold 1120, the space utilization rate of the charging cable 11 is improved while achieving the liquid cooling effect.
[0087] In other embodiments, one liquid outlet manifold 1120 is connected to the first liquid cooling pipe 113 via a third connector 1153; the other liquid outlet manifold 1120 is connected to the second liquid cooling pipe 114 via a fourth connector 1154. A first liquid outlet connection port 1121 is provided on one liquid outlet manifold 1120. A second liquid outlet connection port 1122 is provided on the other liquid outlet manifold 1120.
[0088] By limiting the two outlet manifolds 1120, the total flow rate of coolant can be increased, allowing more coolant to participate in the heat exchange process, thereby improving the cooling efficiency of the charging cable 11.
[0089] In some embodiments, a plurality of third connectors 1153 are vertically connected between the first liquid cooling pipe 113 and the liquid outlet manifold 1120. And / or, a plurality of fourth connectors 1154 are vertically connected between the second liquid cooling pipe 114 and the liquid outlet manifold 1120.
[0090] Among them, multiple third connectors 1153 can be vertically or obliquely connected between the liquid outlet manifold 1120 and the first liquid cooling pipe 113.
[0091] And / or, multiple fourth connectors 1154 may be vertically or obliquely connected between the liquid outlet manifold 1120 and the second liquid cooling pipe 114.
[0092] In this embodiment, multiple third connectors 1153 are vertically connected between the liquid outlet manifold 1120 and the first liquid cooling pipe 113 to reduce flow resistance and make it easier for coolant to enter the corresponding third connector 1153.
[0093] And / or, multiple fourth connectors 1154 are vertically connected between the liquid outlet manifold 1120 and the second liquid cooling pipe 114 to reduce flow resistance and make it easier for coolant to enter the corresponding fourth connector 1154.
[0094] In some embodiments, the cross-sectional dimension of the third connector 1153 in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid outlet manifold assembly 112 in the axial direction and the cross-sectional dimension of the first liquid cooling pipe 113 in the axial direction. And / or, the cross-sectional dimension of the fourth connector 1154 in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid outlet manifold assembly 112 in the axial direction and the cross-sectional dimension of the second liquid cooling pipe 114 in the axial direction.
[0095] The third connector 1153 is disposed between the liquid outlet manifold assembly 112 and the first liquid cooling pipe 113 in a manner that is the same as or similar to the first connector 1151 disposed between the liquid inlet manifold assembly 111 and the first liquid cooling pipe 113, and will not be described further here. The fourth connector 1154 is disposed between the liquid outlet manifold assembly 112 and the second liquid cooling pipe 114 in a manner that is the same as or similar to the second connector 1152 disposed between the liquid inlet manifold assembly 111 and the second liquid cooling pipe 114, and will not be described further here.
[0096] Please see Figures 1 to 9 In some embodiments, the liquid-cooled charging gun 10 further includes an inlet pipe 116. The inlet pipe 116 extends along its axial direction. An inlet manifold assembly 111, a first connector 1151, a first liquid-cooling pipe 113, a second connector 1152, a second liquid-cooling pipe 114, a third connector 1153, an outlet manifold assembly 112, and a fourth connector 1154 surround the outer periphery of the inlet pipe 116.
[0097] The inlet pipe 116 is used for coolant inflow. The inlet manifold assembly 111 includes an inlet manifold 1110. The outlet manifold assembly 112 includes an outlet manifold 1120. The inlet manifold 1110 and the first liquid cooling pipe 113 are connected by a first connector 1151; the inlet manifold 1110 and the second liquid cooling pipe 114 are connected by a second connector 1152; the outlet manifold 1120 and the first liquid cooling pipe 113 are connected by a third connector 1153; and the outlet manifold 1120 and the second liquid cooling pipe 114 are connected by a fourth connector 1154. The inlet manifold 1110, first connector 1151, first liquid cooling pipe 113, third connector 1153, outlet manifold 1120, fourth connector 1154, second liquid cooling pipe 114, and second connector 1152 are sequentially connected along a direction perpendicular to the axial direction of the charging cable 11, forming a square cross-section. The inlet pipe 116, located at the center of the square, abuts against the inlet manifold 1110, outlet manifold 1120, first liquid cooling pipe 113, and second liquid cooling pipe 114. This arrangement of the inlet pipe 116 makes the internal structure of the charging cable 11 compact, improving space utilization. Furthermore, the inlet pipe 116 provides support in the central portion, ensuring tight contact between different pipes and improving overall structural stability.
[0098] In some embodiments, the inlet pipe 116 is arranged parallel to the inlet manifold assembly 111, the outlet manifold assembly 112, the first liquid cooling pipe 113, and the second liquid cooling pipe 114 along a first direction.
[0099] Please see Figures 10 to 12 , Figure 10 This is a schematic diagram of the structure of the nozzle end of this application. Figure 11 This is a cross-sectional schematic diagram of the nozzle tip of this application. Figure 12 This is a schematic diagram of the structure of the gun's tail end in this application. (Combined with...) Figures 1 to 9 In some embodiments, the liquid-cooled charging gun 10 further includes a head end 12, a tail end 13, and an inlet pipe 116. The head end 12 is used to connect to the vehicle end (not shown in the figure). The tail end 13 is used to connect to the charging pile end (not shown in the figure). The inlet pipe 116 extends along its axial direction. Coolant in the inlet pipe 116 moves from the tail end 13 to the head end 12 to cool the head end 12.
[0100] The nozzle tip 12 is connected to one end of the charging cable 11, and the nozzle tail 13 is connected to the other end of the charging cable 11. One end of the liquid inlet tube 116 is connected to the nozzle tip 12, and the other end is connected to the nozzle tail 13.
[0101] During operation, coolant flows from the tail end 13 of the gun into the inlet pipe 116, and moves from the tail end 13 to the head end 12 in the inlet pipe 116 to cool the head end 12 first, and then flows from the head end 12 into the inlet manifold assembly 111 to cool the first wire 1130 and the second wire 1140.
[0102] The inlet manifold assembly 111 is closed at one end near the nozzle tail 13. The outlet manifold assembly 112 is closed at one end near the nozzle head 12. When coolant enters the inlet manifold assembly 111 from the nozzle head 12, it cools the first wire 1130 and the second wire 1140 before flowing into the outlet manifold 1120 and being discharged from the nozzle tail 13. This arrangement allows the coolant to form a unidirectional loop in the pipeline, ensuring that the inlet and outlet flow resistances of the individual first connector 1151, second connector 1152, third connector 1153, and fourth connector 1154 are equal. Combined with the coolant pump (not shown in the figure) at the charging pile end pumping coolant into the inlet pipe 116, it ensures that the coolant will only flow out of the outlet manifold assembly 112 after cooling the first wire 1130 and the second wire 1140.
[0103] In addition, since the sum of the axial cross sections of all the first connectors 1151 is greater than the axial cross sections of the inlet manifold assembly 111 and the outlet manifold assembly 112, the total flow resistance of the coolant in the charging cable 11 is greatly reduced, thereby reducing the working pressure of the drive pump, increasing the total flow rate of the coolant, and improving the heat dissipation effect of the wire.
[0104] Please see Figures 1 to 12 In some embodiments, the liquid-cooled charging gun 10 further includes a protective sleeve 121. The protective sleeve 121 is provided with a sleeve cooling chamber 1211 and a sleeve liquid inlet 1212 and a sleeve liquid outlet 1213 communicating with the sleeve cooling chamber 1211. The sleeve liquid inlet 1212 is connected to an inlet pipe 116. The sleeve liquid outlet 1213 is connected to an inlet manifold assembly 111. A first terminal 122 is provided at one end of the first wire 1130 near the gun head end 12. A second terminal 123 is provided at one end of the second wire 1140 near the gun head end 12. The protective sleeve 121 is at least partially fitted around the outer periphery of the first terminal 122 and the second terminal 123, such that the first terminal 122 and the second terminal 123 are at least partially located within the sleeve cooling chamber 1211.
[0105] The sheath inlet 1212 is connected to the end of the inlet pipe 116 near the nozzle end 12. The sheath outlet 1213 is connected to the end of the inlet manifold assembly 111 near the nozzle end 12. When the inlet manifold assembly 111 includes two inlet manifolds 1110, two sheath outlets 1213 are provided, each connected to one of the two inlet manifolds 1110. The sheath sleeve 121 is partially fitted around the outer periphery of the first terminal 122 and the second terminal 123, forming two annular sheath cooling chambers 1211 for coolant flow between a portion of the surface of the first terminal 122 and the second terminal 123 and the sheath sleeve 121. A sealing element 1214 is provided at the contact point between the sheath sleeve 121 and the first terminal 122 and the second terminal 123. The sealing element 1214 can be, but is not limited to, rubber rings and plastic seals. The sealing element 1214 seals and fixes the sheath cooling chambers 1211.
[0106] The end of the first liquid cooling tube 113 near the nozzle tip 12 is sealed and connected to the first terminal 122. The end of the second liquid cooling tube 114 near the nozzle tip 12 is sealed and connected to the second terminal 123. The first terminal 122 and the second terminal 123 can be, but are not limited to, DC power supply terminals (DC+, DC...). ), message interaction communication terminals (S+, S) ), communication terminals (CC1, CC2) and low-voltage auxiliary power supply terminals (A+, A) In this embodiment, the first terminal 122 and the second terminal 123 are DC power supply terminals (DC+, DC+, DC+). ).
[0107] During operation, coolant enters the sheath assembly 121 through the inlet pipe 116 from the inlet port 1212, flows into the two sheath cooling chambers 1211, and provides contact liquid cooling to the first terminal 122 and the second terminal 123. Then, it flows from the outlet port 1213 into the inlet manifold assembly 111 to cool the first wire 1130 and the second wire 1140. This configuration effectively cools the first terminal 122 and the second terminal 123 at the nozzle end 12 without requiring additional components, thus improving the cooling efficiency of a single coolant cycle. The sheath assembly 121 not only cools the first terminal 122 and the second terminal 123 but also connects and secures the first wire 1130 and the second wire 1140.
[0108] Please see Figures 1 to 12 This application provides a charging device (not shown in the figure). The charging device includes a liquid-cooled charging gun 10.
[0109] The charging equipment can be used to power the vehicle. A liquid-cooled charging gun 10 is disposed within the charging equipment. It should be noted that the liquid-cooled charging gun 10 in this embodiment is the same as the liquid-cooled charging gun 10 described in the above embodiments, and will not be repeated here.
[0110] By using the liquid-cooled charging gun 10, the charging device can change the flow direction of the coolant from the axial direction along the charging cable 11 to the axial direction, thereby making the coolant cool evenly and increasing the upper limit of the charging power and the upper limit of the length of the charging cable 11.
[0111] In some embodiments, the charging device further includes a charging pile (not shown in the figure). The head end 12 of the liquid-cooled charging gun 10 is connected to the vehicle end, and the tail end 13 is connected to the charging pile.
[0112] Specifically, the charging pile is equipped with a liquid pump (not shown in the figure), which can re-cool the coolant after heat exchange and pump it into the inlet pipe 116 through the liquid pump for liquid cooling circulation of the liquid-cooled charging gun 10.
[0113] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of those features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. A process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.
[0114] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A liquid-cooled charging gun, characterized in that, Includes a charging cable, the charging cable comprising: A liquid inlet manifold assembly extends along its axial direction and can be filled with coolant; The first liquid cooling pipe extends along its axial direction; The first conductor extends along its axial direction and passes through the first liquid cooling pipe; The second liquid cooling pipe extends along its axial direction; The second conductor extends along its axial direction and passes through the second liquid cooling pipe; Multiple first connectors are connected between the liquid inlet manifold assembly and the first liquid cooling pipe; Multiple second connectors are connected between the liquid inlet manifold assembly and the second liquid cooling pipe.
2. The liquid-cooled charging gun according to claim 1, characterized in that, The liquid inlet manifold assembly is provided with multiple first liquid inlet ports, and the first connector is connected to the first liquid inlet ports. The size of the first liquid inlet port is smaller than the cross-sectional size of the liquid inlet manifold assembly along the vertical axial direction.
3. The liquid-cooled charging gun according to claim 2, characterized in that, The first liquid cooling pipe is provided with multiple first liquid cooling connection ports, and the first connector is connected between the corresponding first liquid inlet connection port and the first liquid cooling connection port.
4. The liquid-cooled charging gun according to claim 3, characterized in that, The dimensions of the first liquid inlet, the first liquid cooling inlet, and the cross-sectional dimensions of the first connector along the direction perpendicular to the axial direction are all the same.
5. The liquid-cooled charging gun according to claim 3, characterized in that, Multiple first liquid cooling connection ports are arranged in an array along the axial direction of the first liquid cooling pipe; And / or, multiple second liquid cooling connection ports are arranged in an array along the axial direction of the second liquid cooling pipe.
6. The liquid-cooled charging gun according to claim 5, characterized in that, The first liquid inlet ports are spaced at equal intervals.
7. The liquid-cooled charging gun according to claim 1, characterized in that, Multiple first connectors are vertically connected between the liquid inlet manifold assembly and the first liquid cooling pipe; And / or, a plurality of the second connectors are vertically connected between the liquid inlet manifold assembly and the second liquid cooling pipe.
8. The liquid-cooled charging gun according to claim 1, characterized in that, The cross-sectional dimension of the first connector in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly in the axial direction and the cross-sectional dimension of the first liquid cooling pipe in the axial direction. And / or, the cross-sectional dimension of the second connector in the direction perpendicular to the axial direction is smaller than the cross-sectional dimension of the liquid inlet manifold assembly in the axial direction and the cross-sectional dimension of the second liquid cooling pipe in the axial direction.
9. The liquid-cooled charging gun according to claim 1, characterized in that, The liquid inlet manifold assembly includes a liquid inlet manifold, which is connected to the first liquid cooling pipe and the second liquid cooling pipe respectively.
10. The liquid-cooled charging gun according to claim 1, characterized in that, Also includes: The liquid outlet manifold assembly extends along its axial direction; Multiple third connectors are connected between the liquid outlet manifold assembly and the first liquid cooling pipe; Multiple fourth connectors are connected between the liquid outlet manifold assembly and the second liquid cooling pipe.
11. The liquid-cooled charging gun according to claim 10, characterized in that, The liquid outlet manifold assembly includes a liquid outlet manifold, which is connected to the first liquid cooling pipe and the second liquid cooling pipe respectively.
12. The liquid-cooled charging gun according to claim 11, characterized in that, Multiple third connectors are vertically connected between the first liquid cooling pipe and the liquid outlet manifold; And / or, a plurality of the fourth connectors are vertically connected between the second liquid cooling pipe and the liquid outlet manifold.
13. The liquid-cooled charging gun according to claim 10, characterized in that, It also includes a liquid inlet pipe, which extends along its axial direction, and the liquid inlet manifold assembly, the first connector, the first liquid cooling pipe, the second connector, the second liquid cooling pipe, the third connector, the liquid outlet manifold assembly, and the fourth connector surround the outer periphery of the liquid inlet pipe.
14. The liquid-cooled charging gun according to claim 1, characterized in that, Also includes: The nozzle end is used to connect to the vehicle end; The tail end of the gun is used to connect to the charging pile. The inlet pipe extends along its axial direction, and the coolant in the inlet pipe moves from the tail end of the gun to the head end of the gun to cool the head end of the gun.
15. The liquid-cooled charging gun according to claim 14, characterized in that, It also includes a protective sleeve, which is provided with a protective sleeve cooling chamber and a protective sleeve liquid inlet and a protective sleeve liquid outlet communicating with the protective sleeve cooling chamber. The protective sleeve liquid inlet is connected to the liquid inlet pipe, and the protective sleeve liquid outlet is connected to the liquid inlet manifold assembly. The first wire has a first terminal at one end near the gun head, and the second wire has a second terminal at one end near the gun head. The protective sleeve is at least partially fitted around the first terminal and the second terminal, so that the first terminal and the second terminal are at least partially located in the cooling cavity of the protective sleeve.
16. A charging device, characterized in that, Includes the liquid-cooled charging gun according to any one of claims 1 to 15.