Connecting terminal and charging gun

Abstract

The utility model discloses a connecting terminal and a charging gun. The connecting terminal comprises a conductive end and a joint end, and the conductive end comprises a conductive part and a conductive chassis connected with the conductive part. The connector end is provided with a groove, and the conductive base plate covers a groove opening of the groove to form a cavity. A plurality of connecting pipes are arranged at the end, away from the conductive chassis, of the connector end, a plurality of through holes are further formed in the side wall of the connector end, and the connecting pipes and the through holes are all communicated with the cavity. According to the technical scheme, the cooling efficiency and the conductive efficiency of the connecting terminal are improved, and the connecting terminal is convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicle charging, in particular to a connecting terminal and a charging gun. Background Art

[0002] With the rapid development of new energy vehicles, how to efficiently and quickly transmit large currents has become an urgent problem to be solved. However, in the process of transmitting large currents, a large amount of heat will be generated at the terminal connection, resulting in reduced cooling efficiency and conductive efficiency of the connection terminals. At the same time, due to the complexity of the connection terminal structure, it is not convenient to disassemble, assemble and repair. Utility Model Content

[0003] The main purpose of the utility model is to provide a connecting terminal and a charging gun, which aims to improve the cooling efficiency and the conductive efficiency of the connecting terminal while reducing the structural complexity of the connecting terminal to facilitate disassembly, assembly and maintenance.

[0004] In order to achieve the above object, the utility model provides a connecting terminal, which includes:

[0005] A conductive end, the conductive end comprising a conductive portion and a conductive chassis connected to the conductive portion;

[0006] A connector end, wherein the connector end has a groove, and the conductive chassis covers the groove notch to form a cavity;

[0007] A plurality of connection tubes are arranged at one end of the joint end away from the conductive chassis, and a plurality of through holes are arranged on the side wall of the joint end. The plurality of connection tubes and the plurality of through holes are all connected to the cavity.

[0008] In one embodiment, the joint end is also provided with a partition portion, which divides the cavity into a plurality of independent sub-cavities, each sub-cavity is provided with a connecting pipe and a through hole, and the cooling medium flows into the sub-cavity from one of the connecting pipe and the through hole, and flows out of the sub-cavity from the other to form a cooling circuit.

[0009] In one embodiment, the connection terminal further includes an adapter, a passage is provided in the adapter, and one end of the adapter is connected to the through hole so that the passage is connected to the cavity.

[0010] In one embodiment, the connecting terminal further comprises a fastener, an end of the adapter away from the connector end is provided with a connecting port, a pipe is sleeved on the connecting port, and the fastener is sleeved on an outer wall of a connection between the pipe and the connecting port.

[0011] In one embodiment, a limiting portion is further provided at one end of the adapter close to the connector end, and the connecting terminal further comprises a sealing ring, which is provided between the limiting portion and the connector end.

[0012] In one embodiment, a connecting portion is further provided on the conductive chassis, and the connecting portion and the sub-cavity are correspondingly arranged, and the connecting portion extends in a direction away from the conductive portion and extends into the sub-cavity, and a plurality of power lines respectively pass through the connecting tube and the sub-cavity to be conductively connected to the connecting portion.

[0013] In one embodiment, the power line is passed through a liquid cooling tube, a liquid cooling channel is formed between the power line and the liquid cooling tube, and a plurality of liquid cooling tubes are respectively connected to the connecting tubes to form a cooling channel.

[0014] In one embodiment, a connection plate is protruding from the notch, a fastening hole is provided on the connection plate, a fixing member passes through the fastening hole, and is fixedly connected to the connection hole on the conductive chassis.

[0015] In one embodiment, a sealing gasket is further provided between the conductive chassis and the connector end.

[0016] The utility model also proposes a charging gun, which includes a power terminal, a gun housing and the connecting terminal. The power terminal and the connecting terminal are both arranged in the gun housing, and the power terminal and the connecting terminal are connected by a liquid-cooled wire.

[0017] A connection terminal of a technical solution of the utility model includes a conductive end and a connector end, wherein the conductive end includes a conductive part and a conductive chassis connected to the conductive part; the connector end has a groove, and the conductive chassis covers the groove notch to form a cavity; a plurality of connecting tubes are provided at one end of the connector end away from the conductive chassis, and a plurality of through holes are also provided on the side wall of the connector end, and the plurality of connecting tubes and the plurality of through holes are connected to the cavity. In this way, the conductive chassis and the connector end are enclosed together to form a cavity, and the cooling medium can directly cool the conductive chassis of the conductive end after flowing into the cavity, thereby improving the cooling efficiency and the conductive efficiency. By setting the number of connecting tubes to multiple and the number of through holes to multiple, the flow rate and flow velocity of the coolant are increased, thereby further improving the cooling efficiency and the conductive efficiency. By setting the connection terminal to a split type of the conductive end and the connector end, it is also convenient to connect, install and repair each component, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1Schematic diagram of the structure of the connecting terminal of this embodiment.

[0020] Figure 2 FIG. 4 is an exploded view of the connection terminal of this embodiment.

[0021] Figure 3 Schematic diagram of the structure of the connector end of this embodiment.

[0022] Figure 4 It is a rear view of the connecting terminal of this embodiment.

[0023] Figure 5 for Figure 4 Schematic diagram of the cross section at AA in the middle.

[0024] Figure 6 for Figure 4 Schematic diagram of the cross section at BB in the middle.

[0025] Figure 7 Schematic diagram of the structure of the adapter in this embodiment.

[0026] Figure 8 Schematic diagram of the structure of the fastener of this embodiment.

[0027] Description of Figure Numbers:

[0028] 100. Connecting terminal; 1. Conductive end; 11. Conductive part; 12. Conductive chassis; 121. Connecting hole; 13. Connecting part; 2. Connector end; 21. Groove; 22. Cavity; 23. Connecting tube; 24. Spacer; 25. Through hole; 26. Adapter; 261. Passage; 262. Connecting port; 263. Screw-on part; 264. Limiting part; 27. Fastener; 271. Threaded part; 262. Clamping part; 28. Sealing ring; 29. ​​Connecting plate; 291. Fastening hole; 3. Liquid-cooling wire; 31. Power line; 32. Liquid-cooling tube; 33. Liquid-cooling channel; 4. Fixing piece; 5. Sealing pad.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] With the rapid development of new energy vehicles, how to efficiently and quickly transmit large currents has become an urgent problem to be solved. However, in the process of transmitting large currents, a large amount of heat will be generated at the terminal connection, resulting in reduced cooling efficiency and conductive efficiency of the connection terminals. At the same time, due to the complexity of the connection terminal structure, it is not convenient to disassemble, assemble and repair.

[0034] In view of this, the present invention provides a connecting terminal 100 .

[0035] In the embodiment of the present utility model, refer to Figure 1 to Figure 2 The connecting terminal 100 comprises a conductive end 1 and a connector end 2, wherein the conductive end 1 comprises a conductive portion 11 and a conductive chassis 12 connected to the conductive portion 11; the connector end 2 has a groove 21, and the conductive chassis 12 covers the notch of the groove 21 to form a cavity 22; a plurality of connecting tubes 23 are provided at one end of the connector end 2 away from the conductive chassis 12, and a plurality of through holes 25 are also provided on the side wall of the connector end 2, and the plurality of connecting tubes 23 and the plurality of through holes 25 are all connected to the cavity 22.

[0036] It can be understood that the connection terminal 100 is generally used to connect with the power line 31 to transmit electric energy. The connection terminal 100 includes a conductive end 1 and a connector end 2. The conductive end 1 is made of a conductive material and is used to transmit electric energy. The conductive end 1 includes a conductive part 11 and a conductive chassis 12 connected to the conductive part 11. The conductive chassis 12 covers the notch of the groove 21 of the connector end 2 to form a cavity 22. The end of the connector end 2 away from the conductive chassis 12 is provided with a plurality of connecting tubes 23, and the side wall of the connector end 2 is provided with a plurality of through holes 25. The plurality of connecting tubes 23 and the plurality of through holes 25 are all connected to the cavity 22. In this way, the cooling medium can enter the cavity 22 from the connecting tube 23 and then flow out from the through hole 25; or the cooling medium flows into the cavity 22 from the through hole 25 and then flows out from the cavity 22. The conductive chassis and the connector end are enclosed together to form a cavity. After the cooling medium flows into the cavity, it can directly cool down the conductive chassis of the conductive end, thereby improving the cooling efficiency and the conductive efficiency. By setting the number of connecting tubes 23 to multiple and the number of through holes 25 to multiple, the flow rate and flow velocity of the coolant are increased, thereby further improving the cooling efficiency and the conductive efficiency. By setting the connecting terminal 100 to a split type of the conductive end 1 and the connector end 2, it is convenient to connect, install and maintain each component, thereby improving production efficiency. Optionally, the number of connecting tubes 23 can be two, and correspondingly, the number of through holes 25 can also be two.

[0037] In one embodiment, referring to Figures 1 to 3 , Figure 5 The joint end 2 is also provided with a partition 24, which divides the cavity 22 into a plurality of independent sub-cavities. Each sub-cavity is provided with a connecting pipe 23 and a through hole 25. The cooling medium flows into the sub-cavity from one of the connecting pipe 23 and the through hole 25, and flows out of the sub-cavity from the other to form a cooling circuit.

[0038] It can be understood that by setting a spacer 24 at the joint end 2, the cavity 22 is divided into a plurality of independent sub-cavities, and each sub-cavity is connected to a connecting pipe 23 and a through hole 25. Such a setting enables the cooling medium to circulate according to a fixed flow channel, preventing the cooling media in different sub-cavities from crosstalking with each other and reducing the cooling efficiency. The cooling medium flows into the corresponding sub-cavity from one of the connecting pipe 23 and the through hole 25, and flows out of the sub-cavity from the other to form a cooling circuit. Optionally, the flow direction of the cooling medium in different sub-cavities can be the same or different. That is, the flow direction of the cooling medium in the sub-cavity can flow into the sub-cavity from the through hole 25 and then flow out from the connecting pipe 23; it can also flow into the sub-cavity from the connecting pipe 23 and then flow out from the through hole 25. When the flow direction of the cooling medium in different sub-cavities is the same, the flow direction of the cooling medium in each sub-cavity is to flow into each sub-cavity from the connecting pipe 23 and then flow out of the sub-cavity from each through hole 25, or the flow direction of the cooling medium in each sub-cavity is to flow into each sub-cavity from the through hole 25 and then flow out of the sub-cavity from each connecting pipe 23 hole.

[0039] In one embodiment, referring to Figure 1 to Figure 2 , Figures 4 to 5 The connection terminal 100 further includes an adapter 26 , in which a passage 261 is provided. One end of the adapter 26 is connected to the through hole 25 , so that the passage 261 is connected to the cavity 22 .

[0040] It is understandable that one end of the adapter 26 is connected to the through hole 25, and the other end of the adapter 26 is connected to the pipe. A passage 261 is provided in the adapter 26, and the passage 261 is connected to the cavity 22. With this arrangement, the cooling medium can flow from the pipe into the cavity 22 and then into the liquid-cooled wire 3, or the cooling medium can flow from the liquid-cooled wire 3 into the cavity 22 and then into the pipe. It is understandable that the adapter 26 and the joint end 2 can be connected together by providing an external thread at one end of the adapter 26 close to the joint end 2 and providing an internal thread on the inner wall of the through hole 25; or the two can be connected together by interference connection, welding, etc.

[0041] In one embodiment, referring to Figure 1 to Figure 2 , Figures 4 to 5 The connecting terminal 100 further includes a fastener 27 . The end of the adapter 26 away from the connector end 2 is provided with a connecting port 262 . The pipe is sleeved on the connecting port 262 . The fastener 27 is sleeved on the outer wall of the connection between the pipe and the connecting port 262 .

[0042] It is understandable that after the pipe is sleeved on the connection port 262 of the adapter 26, in order to prevent the pipe from falling off, a fastener 27 is also required to be provided on the outer wall of the connection between the pipe and the connection port 262. It is understandable that the fastener 27 can be a cable tie, a clamp, or other structures that can prevent the pipe and the adapter 26 from falling off. Further, the adapter 26 is also provided with a screw connection portion 263 at one end close to the connection port 262, and the fastener 27 is provided with a threaded portion 271 corresponding to the screw connection portion 263, and the fastener 27 is provided with a clamping portion 262 corresponding to the connection port 262. During assembly, the pipe is first sleeved on the connection port 262, and then the fastener 27 is sleeved on the connection port 262 and the outside of the pipe, and the fastener 27 is screwed so that the screw connection portion 263 and the threaded portion 271 are screwed, and the clamping portion 262 clamps the pipe and the connection port 262.

[0043] In one embodiment, referring to Figure 1 to Figure 2 , Figures 4 to 5 The adapter 26 is further provided with a limiting portion 264 at one end close to the connector end 2 , and the connecting terminal 100 further includes a sealing ring 28 , which is provided between the limiting portion 264 and the connector end 2 .

[0044] It can be understood that in order to prevent the cooling medium from leaking from the gap between the adapter 26 and the joint end 2, a sealing ring 28 is further provided between the limiting portion 264 and the joint section.

[0045] In one embodiment, referring to Figure 2 ,, 5 to 6, a connecting portion 13 is also provided on the conductive chassis 12, and the connecting portion 13 and the sub-cavity are arranged correspondingly. The connecting portion 13 extends in a direction away from the conductive portion 11 and extends into the sub-cavity, and a plurality of power lines 31 respectively pass through the connecting tube 23 and the cavity 22 to be conductively connected to the connecting portion 13.

[0046] It can be understood that the power line 31 can be directly connected to the conductive chassis 12. In order to improve the stability of the connection and better cool the connection, a connecting part 13 can be provided on the conductive chassis 12. The connecting part 13 and the sub-cavity are correspondingly arranged, extending in a direction away from the conductive cloth and extending into the sub-cavity. Multiple power lines 31 pass through the connecting tube 23 and the cavity 22 respectively to be conductively connected to the connecting part 13. In this way, the liquid cooling wire 3 is split into multiple wires, and the power line 31 of each liquid cooling wire 3 passes through a connecting tube 23 and a sub-cavity to be connected to the corresponding connecting part 13. The liquid cooling tube 32 of each liquid cooling wire 3 is connected to a connecting tube 23, so that the connection between the power line 31 and the connecting part 13 can be directly immersed in the cooling medium, thereby improving the cooling efficiency. At the same time, the liquid cooling wire 3 is split into multiple wires, so that the spatial arrangement of the liquid cooling cable is more compact, thereby achieving the purpose of reducing the cable quality and wire diameter.

[0047] In one embodiment, if Figure 2, 5 6, the power line 31 is passed through the liquid cooling tube 32, and a liquid cooling channel 33 is formed between the power line 31 and the liquid cooling tube 32. The plurality of liquid cooling tubes 32 are respectively connected to the connecting tube 23 to form a cooling channel.

[0048] It can be understood that the power line 31 is passed through the liquid cooling tube 32, and a liquid cooling channel 33 is formed between the power line 31 and the liquid cooling tube 32, so that the power line 31 is directly immersed in the cooling medium, thereby improving the heat dissipation efficiency. By connecting a plurality of liquid cooling tubes 32 to the connecting tube 23 respectively, a cooling channel can be formed, so that the cooling medium can flow from the liquid cooling channel 33 into the connecting tube 23, and then into the sub-cavity, and then flow from the opening corresponding to the sub-cavity to the adapter 26, and flow out from the pipe connected to the adapter 26; or the cooling medium can flow from the pipe into the adapter 26, and then enter the corresponding sub-cavity from the opening, and then flow from the connecting tube 23 corresponding to the sub-cavity into the liquid cooling channel 33 connected thereto.

[0049] In one embodiment, if Figures 1 to 3 5. A connecting plate 29 is protruding from the notch, and a fastening hole 291 is provided on the connecting plate 29. The fixing member 4 passes through the fastening hole 291 and is fixedly connected to the connecting hole 121 on the conductive chassis 12.

[0050] In order to achieve detachable connection between the connector end 2 and the conductive end 1, a fastening hole 291 is provided on the connecting plate 29, and the fixing member 4 passes through the fastening hole 291 and is fixedly connected to the connecting hole 121 on the conductive chassis 12. Optionally, the fixing member 4 can be a screw.

[0051] In one embodiment, if Figure 2 , 5 As shown in Figures 6 to 6 , a sealing gasket 5 is further provided between the conductive chassis 12 and the connector end 2 .

[0052] It is understandable that by further providing a sealing pad 5 between the conductive chassis 12 and the connector end 2, the cooling medium is prevented from flowing out of the gap between the conductive end 1 and the connector end 2. Further, the sealing pad 5 also includes a spacer, and the spacer is provided corresponding to the spacer 24. It is understandable that by providing a spacer at a position corresponding to the spacer 24, the cooling medium is prevented from flowing into the adjacent sub-cavity.

[0053] The utility model also provides a charging gun, including a power terminal, a gun housing and a connection terminal 100. The specific structure of the connection terminal 100 refers to the above embodiment. The power terminal and the connection terminal 100 are both arranged in the gun housing, and the power terminal and the connection terminal 100 are connected through a liquid cooling wire 3. Since the charging gun adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0054] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A connecting terminal (100), characterized in that: The connecting terminal (100) comprises: A conductive end (1), the conductive end (1) comprising a conductive portion (11) and a conductive chassis (12) connected to the conductive portion (11); A connector end (2), the connector end (2) having a groove (21), the conductive chassis (12) covering the notch of the groove (21) to form a cavity (22); A plurality of connection tubes (23) are provided at one end of the joint end (2) away from the conductive chassis (12), and a plurality of through holes (25) are also provided on the side wall of the joint end (2), and the plurality of connection tubes (23) and the plurality of through holes (25) are all in communication with the cavity (22).

2. The connecting terminal (100) according to claim 1, characterized in that: The joint end (2) is also provided with a partition (24), and the partition (24) divides the cavity (22) into a plurality of independent sub-cavities, each of which is provided with a connecting pipe (23) and a through hole (25). The cooling medium flows into the sub-cavity from one of the connecting pipe (23) and the through hole (25), and flows out of the sub-cavity from the other, so as to form a cooling circuit.

3. The connecting terminal (100) according to claim 2, characterized in that: The connecting terminal (100) further comprises an adapter (26), wherein a passage (261) is provided in the adapter (26), and one end of the adapter (26) is connected to the through hole (25) so that the passage (261) and the cavity (22) are in communication.

4. The connecting terminal (100) according to claim 3, characterized in that: The connecting terminal (100) further comprises a fastener (27); an end of the adapter (26) away from the connector end (2) is provided with a connecting port (262); a pipe is sleeved on the connecting port (262); and the fastener (27) is sleeved on the outer wall of the connection between the pipe and the connecting port (262).

5. The connecting terminal (100) according to claim 4, characterized in that: The adapter (26) is also provided with a limiting portion (264) at one end close to the connector end (2), and the connecting terminal (100) further comprises a sealing ring (28), wherein the sealing ring (28) is provided between the limiting portion (264) and the connector end (2).

6. The connecting terminal (100) according to claim 2, characterized in that: The conductive chassis (12) is also provided with a connecting portion (13), the connecting portion (13) and the sub-cavity are arranged correspondingly, the connecting portion (13) extends in a direction away from the conductive portion (11) and extends into the sub-cavity, and a plurality of power lines (31) respectively pass through the connecting tube (23) and the sub-cavity to be conductively connected to the connecting portion (13).

7. The connecting terminal (100) according to claim 6, characterized in that: The power line (31) is passed through a liquid cooling pipe (32), a liquid cooling channel (33) is formed between the power line (31) and the liquid cooling pipe (32), and a plurality of liquid cooling pipes (32) are respectively connected to the connecting pipe (23) to form a cooling flow channel.

8. The connecting terminal (100) according to claim 1, characterized in that: A connection plate (29) is protruding from the notch, and a fastening hole (291) is provided on the connection plate (29). The fixing member (4) passes through the fastening hole (291) and is fixedly connected to the connection hole (121) on the conductive chassis (12).

9. The connecting terminal (100) according to claim 1, characterized in that: A sealing gasket (5) is also provided between the conductive chassis (12) and the connector end (2).

10. A charging gun, characterized in that: The charging gun comprises a power terminal, a gun housing and a connecting terminal (100) according to any one of claims 1 to 9, wherein the power terminal and the connecting terminal (100) are both arranged in the gun housing, and the power terminal and the connecting terminal (100) are connected via a liquid-cooled wire (3).

Images