An assembly structure and assembly method for a conductor cable

Abstract

This invention relates to the technical field of DC charging guns, and discloses an assembly structure and method for a conductor cable, including: a front-end assembly, a liquid-cooled terminal, and auxiliary components; a mark and a traction line are provided on the conductor cable, the mark is set on the conductor cable at the center of the adapter, and the traction line is crimped onto the conductor cable by a fixing ring. When assembling the liquid-cooled terminal, the mark on the conductor cable is observed through the adapter, and the conductor cable is adjusted by the traction line to ensure that the liquid-cooled terminal and the conductor cable are correctly assembled, solving the problem in the prior art that the liquid-cooled terminal is easily misinstalled when assembling it onto the conductor cable.

Description

Technical Field

[0001] This invention relates to the field of DC charging gun technology, and in particular to an assembly structure and assembly method for a conductor cable. Background Technology

[0002] A liquid-cooled terminal is a device installed in a DC charging gun to fix conductor cables and cool them.

[0003] One end of the conductor cable is equipped with a liquid-cooled terminal, and the other end is equipped with a front-end fitting. The two are respectively installed at both ends of the conductor cable. The usual assembly steps are: first, install the front-end fitting at the front end of the conductor cable, determine the length of the conductor cable, and then install the liquid-cooled terminal at the tail end of the conductor cable.

[0004] During this process, because the conductor cable is made of a relatively soft material, it is prone to shrinkage and bending during assembly, which can lead to improper installation. Furthermore, the adapter on the side of the tail terminal does not show the slot in the tail terminal used to fix the conductor cable, so it is impossible to determine whether the position of the conductor cable is correct by observation. Summary of the Invention

[0005] The purpose of this invention is to provide an assembly structure and assembly method for conductor cables, aiming to solve the problem that liquid-cooled terminals are easily misinstalled when assembled onto conductor cables in the prior art.

[0006] In a first aspect, the present invention provides an assembly structure for assembling conductor cables, comprising:

[0007] Front-end components, liquid-cooled terminals, and auxiliary components;

[0008] The front-end assembly and the liquid-cooled terminal are fixedly connected to form a space for setting the conductor cable;

[0009] The front-end assembly includes a liquid cooling pipe and a liquid cooling head, wherein the liquid cooling head is disposed on the liquid cooling pipe and is used to input coolant into the liquid cooling pipe;

[0010] The liquid-cooled terminal includes a terminal body, a crimping part, an adapter, and a bushing structure;

[0011] The bushing structure and the crimping portion are respectively disposed at both ends of the terminal body. The bushing structure is fixedly connected to the front end fitting. The side of the terminal body has an adapter for installing the adapter.

[0012] The auxiliary components include a traction line, a retaining ring, and a marker;

[0013] The retaining ring presses the traction wire onto the conductor cable, the traction wire extends out of the liquid-cooled terminal through the adapter, and the mark is set on the conductor cable at the center of the adapter.

[0014] In one embodiment, the bushing structure includes a bushing tube and a nut;

[0015] The bushing is fixedly connected to the terminal body and the liquid cooling pipe respectively;

[0016] The nut is fitted onto the bushing to secure the liquid cooling pipe and the bushing.

[0017] In one embodiment, the cross-sectional area of ​​the traction wire is 0.7-0.8 mm². 2 .

[0018] In one embodiment, the length of the traction line is 40-50 mm.

[0019] In one embodiment, the retaining ring is attached to the conductor cable by a crimping process, and the outer diameter of the retaining ring is 90% to 100% of the outer diameter of the conductor cable.

[0020] In one embodiment, the retaining ring is positioned on the conductor cable at a distance of 3-5 mm from the liquid cooling pipe.

[0021] In one embodiment, the crimping portion fixes the conductor cable through a crimping process, and the outer diameter of the crimping portion after crimping is 70-90% of that before crimping.

[0022] Secondly, the present invention provides a method for assembling a conductor cable, employing an assembly structure for a conductor cable provided in the first aspect, to assemble the conductor cable, comprising:

[0023] S1: Assemble the front-end assembly at the front end of the conductor cable;

[0024] S2: Extend the traction wire through the adapter to the liquid-cooled terminal;

[0025] S3: Observe the mark through the adapter, and adjust the conductor cable through the traction line so that the mark is in the center position of the adapter;

[0026] S4: Crim the crimping part.

[0027] In one embodiment, S2 includes:

[0028] S21: Assemble the liquid-cooled terminal at the rear end of the conductor cable;

[0029] S22: Lead the traction cable out from the adapter.

[0030] In one embodiment, S4 includes:

[0031] S41: Wrap the traction wire around the liquid-cooled terminal;

[0032] S42: Crim the crimping portion;

[0033] S43: Untangle the traction wire and cut the traction wire.

[0034] This invention provides an assembly structure and assembly method for conductor cables, which has the following advantages:

[0035] Markings and traction wires are provided on the conductor cable. The markings are set on the conductor cable at the center of the adapter. The traction wire is crimped onto the conductor cable by a retaining ring. When assembling the liquid-cooled terminal, the markings on the conductor cable are observed through the adapter, and the conductor cable is adjusted by the traction wire to ensure that the liquid-cooled terminal and the conductor cable are correctly assembled. This solves the problem of improper installation when assembling the liquid-cooled terminal onto the conductor cable in the prior art. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the assembly structure of a conductor cable provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of a liquid-cooled terminal of an assembly structure for a conductor cable provided in an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram illustrating the steps of an assembly method for a conductor cable provided in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of step S2 of an assembly method for a conductor cable provided in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of step S4 of an assembly method for a conductor cable provided in an embodiment of the present invention.

[0041] Reference numerals: 1-Conductor cable, 2-Front-end assembly, 3-Liquid-cooled terminal, 4-Auxiliary component, 21-Liquid-cooled pipe, 22-Liquid-cooled head, 31-Terminal body, 310-Adapter, 32-Crimping part, 33-Adapter, 34-Bushing structure, 41-Traction line, 42-Retaining ring, 43-Marking, 341-Bushing tube, 342-Nut. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0045] Reference Figure 1 , Figure 2 The diagram shows a preferred embodiment of the present invention.

[0046] In a first aspect, the present invention provides an assembly structure for assembling a conductor cable 1, comprising:

[0047] Front-end assembly 2, liquid-cooled terminal 3, and auxiliary components 4.

[0048] Specifically, the front-end assembly 2 and the liquid-cooled terminal 3 are fixedly connected to form a space for setting the conductor cable 1.

[0049] More specifically, the front-end assembly 2 includes a liquid cooling pipe 21 and a liquid cooling head 22. The liquid cooling head 22 is disposed on the liquid cooling pipe 21 and is used to input coolant into the liquid cooling pipe 21 to cool the conductor cable 1.

[0050] More specifically, the liquid-cooled terminal 3 includes a terminal body 31, a crimping part 32, an adapter 33, and a bushing structure 34.

[0051] More specifically, the bushing structure 34 and the crimping part 32 are respectively disposed at both ends of the terminal body 31. The bushing structure 34 is fixedly connected to the front end fitting 2. The side of the terminal body 31 has an adapter 310 for installing the adapter 33.

[0052] It should be noted that the conductor cable 1 abuts against the inside of the crimping part 32. The crimping part 32 fixes the conductor cable 1 through the crimping process. The coolant flows in the terminal body 31 and flows away through the adapter 33 to realize the circulation of the coolant.

[0053] Understandably, in order to achieve smooth circulation of the coolant, the front-end assembly 2 and liquid-cooled terminal 3 used to set the conductor cable 1 only have two openings that connect to the outside world: the liquid-cooled head 22 and the adapter 310. Therefore, when assembling the conductor cable 1, the interior can only be observed through the liquid-cooled head 22 and the adapter 310.

[0054] It should be noted that the conductor cable 1 is made of a flexible material that is easily deformed, and it is prone to bending and misalignment during assembly. More specifically, when assembling the front-end component 2 in the first step, since the liquid-cooled terminal 3 is not yet assembled, the assembly status of the conductor cable 1 inside the liquid-cooled pipe 21 can be observed through the opening of the liquid-cooled pipe 21 to assist in the correct assembly of the conductor cable 1. However, when assembling the liquid-cooled terminal 3 in the second step, the interior can only be observed through the adapter 310. At this time, the condition of the conductor cable 1 inside the crimping part 32 cannot be observed, and it is impossible to confirm whether the conductor cable 1 is assembled in the correct position.

[0055] More specifically, the auxiliary component 4 includes a traction line 41, a retaining ring 42, and a marker 43.

[0056] More specifically, the retaining ring 42 crimps the traction wire 41 onto the conductor cable 1, the traction wire 41 extends out of the liquid-cooled terminal 3 through the adapter 310, and the mark 43 is set on the conductor cable 1 at the center of the adapter 310.

[0057] It should be noted that when the liquid-cooled terminal 3 is not installed, the conductor cable 1 is placed outside the liquid-cooled terminal 3 and compared with the liquid-cooled terminal 3. Mark 43 is made on the conductor cable 1. The position of mark 43 is the conductor cable 1 that is located at the center of the adapter 310 when the conductor cable 1 is set inside the liquid-cooled terminal 3.

[0058] It is understandable that when conductor cable 1 is compared with liquid-cooled terminal 3 from the outside, it represents the ideal situation of conductor cable 1 being assembled in liquid-cooled terminal 3. Therefore, when conductor cable 1 is assembled inside liquid-cooled terminal 3, if mark 43 is in the center position of adapter 310, it means that conductor cable 1 is correctly assembled inside liquid-cooled terminal 3.

[0059] It is understandable that the retaining ring 42 presses the traction wire 41 onto the conductor cable 1. The traction wire 41 can be pulled to adjust the position of the conductor cable 1. Therefore, when the mark 43 is not in the center position of the adapter 310, the traction wire 41 can be used to adjust the position of the conductor cable 1 until the mark 43 is in the center position of the adapter 310. At this time, it means that the conductor cable 1 is correctly assembled inside the liquid-cooled terminal 3.

[0060] This invention provides an assembly structure for a conductor cable 1, which has the following advantages:

[0061] A mark 43 and a traction wire 41 are provided on the conductor cable 1. The mark 43 is set on the conductor cable 1 at the center position of the adapter 310. The traction wire 41 is crimped onto the conductor cable 1 by the fixing ring 42. When assembling the liquid-cooled terminal 3, the mark 43 on the conductor cable 1 is observed through the adapter 310, and the conductor cable 1 is adjusted by the traction wire 41 to ensure that the liquid-cooled terminal 3 and the conductor cable 1 are correctly assembled. This solves the problem in the prior art that the liquid-cooled terminal 3 is easy to be installed incorrectly when it is assembled onto the conductor cable 1.

[0062] In some embodiments, the bushing structure 34 includes a bushing tube 341 and a nut 342.

[0063] Specifically, the bushing 341 is fixedly connected to the terminal body 31 and the liquid cooling pipe 21 respectively, and the nut 342 is sleeved on the bushing 341 to fix the liquid cooling pipe 21 and the bushing 341.

[0064] More specifically, one end of the bushing 341 is fitted with the terminal body 31, and the other end of the bushing 341 is fitted with the bushing 341.

[0065] More specifically, the bushing 341 is not securely fixed after fitting, so a nut 342 is needed to fix it.

[0066] In some embodiments, the cross-sectional area of ​​the traction wire 41 is 0.7-0.8 mm². 2 .

[0067] Specifically, the cross-section of the traction line 41 should not be too large to prevent crimping failure or obstruction of coolant flow after crimping.

[0068] In some embodiments, the length of the traction line 41 is 40-50 mm.

[0069] Specifically, the pull line 41 needs to have a certain length. If the pull line 41 is too short, it cannot extend through the adapter 310, making it impossible to adjust the position of the conductor cable 1 through the pull line 41.

[0070] In some embodiments, the retaining ring 42 is disposed on the conductor cable 1 by a crimping process.

[0071] Specifically, crimping is a process that uses compression to fix two parts together.

[0072] It should be noted that the conductor cable 1 is placed inside the liquid cooling pipe 21, through which coolant flows. If the retaining ring 42 occupies too much volume, it will block the flow of coolant. Therefore, the retaining ring 42 needs to be pressed with a large force to press the retaining ring 42 into the conductor cable 1 so that the retaining ring 42 is fixed on the conductor cable 1.

[0073] More specifically, the fixing ring 42 is in the shape of a cylindrical tube with a circular cross-section. After the fixing ring 42 is crimped into the conductor cable 1, its outer diameter is 90% to 100% of the outer diameter of the conductor cable 1.

[0074] More specifically, the retaining ring 42 can be a copper tube.

[0075] In some embodiments, the retaining ring 42 is positioned on the conductor cable 1 at a distance of 13-5 mm from the liquid cooling pipe 213-5 mm.

[0076] Specifically, the retaining ring 42 is used to secure the traction wire 41, which needs to extend from the adapter 310 to the liquid-cooled terminal 3.

[0077] More specifically, the traction line 41 has a certain length, and it is understood that the position of the retaining ring 42 needs to be set within a certain range so that the traction line 41 can extend from the adapter 310.

[0078] See Figure 3 Secondly, the present invention provides an assembly method for a conductor cable 1, employing an assembly structure for the conductor cable 1 provided in the first aspect, for assembling the conductor cable 1, comprising:

[0079] S1: Assemble the front-end assembly 2 at the front end of the conductor cable 1.

[0080] Specifically, a front-end assembly 2 is assembled at the front end of the conductor cable 1. The front-end assembly 2 includes a liquid cooling pipe 2121 and a liquid cooling head 22. A nut 342 fixes the liquid cooling pipe 21 to the outer bushing. The liquid cooling head 22 is mounted on the liquid cooling pipe 21 and has a pipe that communicates with the outside for supplying coolant to the inside of the liquid cooling pipe 21. The coolant flows in the liquid cooling pipe 21 to cool the conductor cable 1 inside.

[0081] S2: Extend the traction wire 41 through the adapter 310 to the liquid-cooled terminal 3.

[0082] It should be noted that the function of the traction line 41 is to pull the conductor cable 1 to adjust the position of the conductor cable 1 in the liquid-cooled terminal 3 to the correct state. Therefore, the traction line 41 needs to have a certain length and be flexible.

[0083] S3: Observe mark 43 through adapter 310, and adjust conductor cable 1 through pull line 41 so that mark 43 is in the center position of adapter 310.

[0084] It is understandable that the length of the conductor cable 1 is greater than the length of the liquid cooling pipe 21. Therefore, after the liquid cooling pipe 21 is assembled onto the conductor cable 1, a part of the conductor cable 1 will be exposed. This part will be located inside the liquid cooling terminal 3. Since the bushing tube 341 has a closed structure, the conductor cable 1 cannot be observed through the bushing tube 341.

[0085] It should be noted that the terminal body 31 has an adapter 310 for installing an adapter tube. The purpose of the adapter tube is to guide the coolant in the terminal body 31 away to achieve coolant circulation. When assembling the liquid-cooled terminal 3 onto the conductor cable 1, the adapter tube can be installed without first installing it. At this time, the conductor cable 1 can be observed through the adapter 310.

[0086] However, the rear end of the terminal body 31 has a crimping part 32, and the conductor cable 1 needs to be placed in the crimping part 32 to crimp the conductor cable 1 to complete the assembly. However, the condition of the conductor cable 1 in the crimping part 32 cannot be observed through the adapter 310.

[0087] Therefore, in the method provided in this application, a mark 43 is made on the conductor cable 1. The position of the mark 43 is the conductor cable 1 at the center position of the adapter 310 when the liquid cooling terminal 3 is assembled onto the conductor cable 1. In this way, when assembling the conductor cable 1, the state of the conductor cable 1 in the crimping part 32 can be determined by the position of the mark 43 on the conductor cable 1 seen at the adapter 310. When the mark 43 is at the center position of the adapter 310, it can be determined that the position of the conductor cable 1 is correct.

[0088] Understandably, when assembling conductor cable 1, conductor cable 1 is covered by liquid cooling pipe 21 and liquid cooling terminal 3. Therefore, when conductor cable 1 is not in the correct position, there is no means to adjust the position of conductor cable 1. It can only be disassembled and reassembled, which is complicated and has a low success rate.

[0089] Therefore, in the method provided in this application, a traction wire 41 is bound to the conductor cable 1. The traction wire 41 extends out through the adapter 310. Therefore, the position of the conductor cable 1 can be adjusted by pulling the traction wire 41. When the mark 43 on the conductor cable 1 is adjusted to the preset position by the traction wire 41, it means that the conductor cable 1 has entered the correct position in the crimping part 32. At this time, the crimping part 32 can be crimped to complete the assembly of the conductor cable 1.

[0090] S4: Crimping the crimping part 32.

[0091] Specifically, after crimping, the crimping part 32 will fix the conductor cable 1 in place.

[0092] It should be noted that in order to keep the conductor cable 1 stable during the crimping process, the traction wire 41 needs to be wrapped around the liquid-cooled terminal 3 beforehand to maintain stability. After the crimping is completed, in order to enable the adapter 310 to be equipped with the adapter 33, the traction wire 41 needs to be cut.

[0093] In the method provided in this application, by marking 43 on the conductor cable 1 and fixing the traction wire 41, the position of the conductor cable 1 is adjusted by the traction wire 41, and the marking 43 is used to determine whether the position of the conductor cable 1 is adjusted correctly, so that the conductor cable 1 can be assembled into the liquid-cooled terminal 3. This solves the problem in the prior art that the liquid-cooled terminal 3 is easily not installed properly when it is assembled on the conductor cable 1.

[0094] See Figure 4 In some embodiments, S2 includes:

[0095] S21: Assemble the liquid-cooled terminal 3 at the rear end of the conductor cable 1.

[0096] Specifically, the liquid-cooled terminal 3 is assembled at the rear end of the conductor cable 1, and together with the front end fitting 2, it seals the conductor cable 1, allowing the coolant to circulate within it.

[0097] S22: Lead the traction line 41 out from the adapter 310.

[0098] It should be noted that the traction cable 41 is used to adjust the conductor cable 1 so that the conductor cable 1 is in the correct position. Therefore, the traction cable 41 needs to be led out from the adapter to adjust the position of the conductor cable 1.

[0099] See Figure 5 In some embodiments, S4 includes:

[0100] S41: Wrap the traction wire 41 around the liquid-cooled terminal 3.

[0101] S42: Crimping the crimping part 32.

[0102] S43: Untangle the traction wire 41 and cut the traction wire 41.

[0103] It should be noted that in order to keep the conductor cable 1 stable during the crimping process, the traction wire 41 needs to be wrapped around the liquid-cooled terminal 3 beforehand to maintain stability. After the crimping is completed, in order to enable the adapter 310 to be equipped with the adapter 33, the traction wire 41 needs to be cut.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A structure of assembling a conductor cable for assembling the conductor cable, characterized by, The utility model relates to a kind of assembly structure of conductor cable, including: Front end assembly, liquid cooling terminal and auxiliary assembly; The front end assembly and the liquid cooling terminal are fixedly connected, form a space for setting the conductor cable; The front end assembly includes liquid cooling pipe and liquid cooling head, the liquid cooling head is set on the liquid cooling pipe, for the input cooling liquid to the liquid cooling pipe; The liquid cooling terminal includes terminal body, crimping part, adapter and bush structure; The bush structure and the crimping part are respectively arranged at both ends of the terminal body, the bush structure is fixedly connected with the front end assembly, the side of the terminal body has adapter interface, the adapter interface is used to install the adapter; The auxiliary assembly includes pull wire, fixing ring and mark; The fixing ring is crimped on the conductor cable, the pull wire is stretched out of the liquid cooling terminal through the adapter interface, and the mark is arranged on the conductor cable at the center position of the adapter interface.

2. A conductor cable assembly structure as defined in claim 1, wherein, The bush structure includes bush pipe and nut; The bush pipe is fixedly connected with the terminal body and the liquid cooling pipe respectively; The nut is sleeved on the bush pipe to fix the liquid cooling pipe and the bush pipe.

3. The assembly of a conductor cable according to claim 1, wherein The cross-sectional area of the pull wire is 0.7-0.8mm².

4. The conductor cable assembly structure of claim 1, wherein, The length of the pull wire is 40-50mm.

5. The conductor cable assembly structure of claim 1, wherein, The fixing ring is arranged on the conductor cable by crimping process, and the outer diameter of the fixing ring is 90%-100% of the outer diameter of the conductor cable.

6. The conductor cable assembly of claim 1, wherein, The position of the fixing ring arranged on the conductor cable is 3-5mm away from the liquid cooling pipe.

7. The conductor cable assembly structure of claim 1, wherein, The crimping part is fixed to the conductor cable by crimping process, and the outer diameter of the crimping part after crimping is 70-90% of the outer diameter before crimping.

8. A method of assembling a conductor cable, characterized by The assembly structure of the conductor cable is used to assemble the conductor cable, including: S1: assemble the front end assembly at the front end of the conductor cable; S2: extend the pull wire out of the liquid cooling terminal through the adapter interface; S3: observe the mark through the adapter interface, adjust the conductor cable through the pull wire, so that the mark is at the center position of the adapter interface; S4: crimp the crimping part.

9. A method of assembling a conductor cable as claimed in claim 8, characterized in that The S2 includes: S21: assemble the liquid cooling terminal at the rear end of the conductor cable; S22: lead the pull wire out of the adapter interface.

10. A method of assembling a conductor cable as claimed in claim 8, wherein, The S4 includes: S41: wind the pull wire on the liquid cooling terminal; S42: crimp the crimping part; S43: release the winding of the pull wire, and cut off the pull wire.

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