High-voltage connector

Abstract

The utility model relates to the technical field of connectors, and provides a high-voltage connector, which comprises a fuse, a first connecting line and a second connecting line, the first connecting line comprises two branch lines and two terminal lines, the branch lines and the second connecting line are respectively and fixedly arranged at two ends of the fuse, and the two terminal lines are connected with the fuse. The branch line is electrically connected with the cable, and the end part of the branch line is provided with a slot; one end of each terminal wire is arranged in the corresponding slot and is fixedly and electrically connected with the slot, and the terminal wires are in one-to-one correspondence with the slots. According to the utility model, the branch line is provided with the slot, one end of the terminal line is arranged in the slot, and then the branch line and the terminal line are reinforced by using the modes of shroud ring coating, welding fixation and the like, so that the fixation firmness is relatively high, and the safe operation of the high-voltage connector is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a high-voltage connector. Background Art

[0002] In the design of a dual-branch battery pack + high-voltage box, an appropriate high-voltage connector needs to be selected for each branch. At the same time, fuses need to be arranged separately inside the high-voltage box. However, the selection of multiple connecting branches and separate fuses increases the design cost and layout difficulty of the high-voltage connector, and also makes subsequent after-sales maintenance of the fuse difficult.

[0003] The utility model with patent publication number CN219979972U discloses a high-voltage connector, including an inner shell, a fuse and a socket terminal; inner shell, fuse and socket terminal; at least part of the inner shell extends into the battery pack box; the inner shell has a main body and a receiving part, the main body is used to connect with the battery pack box, the opening of the receiving part is arranged outside the battery pack box, the fuse and the socket terminal are both received in the receiving part; the socket terminal includes a first terminal, the fuse includes a first connection end, and the first terminal is detachably connected to the first connection end. The embodiment of the disclosure integrates the fuse inside the high-voltage connector to effectively improve the convenience of installation and maintenance.

[0004] In the above technical solution, in order to facilitate the maintenance of the fuse, it is integrated into the high-voltage connector. As can be seen from the attached figure, each fuse is connected in series with two first terminals respectively. However, the first terminal and the first connecting wire are usually directly welded, and their firmness is relatively low, which is not conducive to ensuring the safe operation of the high-voltage connector. Utility Model Content

[0005] In view of this, the utility model proposes a high-voltage connector, which can improve the connection firmness between the branch line and the terminal line and ensure the safe operation of the high-voltage connector.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a high-voltage connector, including a fuse, a first connecting line and a second connecting line, wherein:

[0007] The first connecting line includes two branch lines and two terminal lines, wherein:

[0008] The branch line and the second connecting line are respectively fixedly arranged at two ends of the fuse and electrically connected thereto, and a slot is provided at the end of the branch line;

[0009] One end of the terminal wire is arranged in the slot, fixed and electrically connected thereto, and the terminal wire corresponds to the slot one by one.

[0010] On the basis of the above technical solution, preferably, the branch line includes two fixedly connected copper bars, and one end of the two copper bars on the same branch line are arranged against each other, and the other end are arranged at intervals to form the slot.

[0011] More preferably, the first connecting line further comprises a hoop, the hoop is slidably fixedly disposed on the outside of the branch line, and one end of the terminal line close to the branch line is located inside the hoop.

[0012] On the basis of the above technical solution, preferably, the fuse includes two fixing frames and a fuse body, wherein:

[0013] The two fixing frames are detachably fixed to the branch line and the second connecting line, respectively, and are electrically connected thereto;

[0014] The fuse body is fixedly arranged between the two fixing frames and is electrically connected thereto.

[0015] On the basis of the above technical solution, preferably, it further includes a plug and four terminals, wherein:

[0016] The fuse, the first connecting wire and the second connecting wire are each provided with two, and the fuse, the first connecting wire, the second connecting wire and one end of the terminal are all fixedly arranged in the plug;

[0017] The terminals are fixed and electrically connected to the terminal wires and correspond one to one.

[0018] More preferably, the plug comprises a housing and a cover plate, wherein:

[0019] The shell is provided with an inspection port;

[0020] The cover plate is detachably fixed on the shell and blocks the inspection opening.

[0021] More preferably, it further comprises a socket and two third connecting wires, wherein,

[0022] The socket is fixed on the plug and is used for being installed on the battery pack;

[0023] The third connection line is fixedly arranged in the socket and is detachably fixedly connected to the second connection line. The third connection line corresponds to the second connection line one by one and is electrically connected.

[0024] More preferably, it further comprises a sealing mechanism, wherein the sealing mechanism comprises a first sealing ring, wherein the first sealing ring is fixedly disposed on the socket and abuts against the plug.

[0025] More preferably, the sealing mechanism includes a second sealing ring, which is fixedly disposed on the socket and is used to abut against the battery pack.

[0026] More preferably, it further comprises a handle, one end of which is rotatably disposed on the plug, and the other end is selectively fixedly connected thereto, and the handle abuts against a side of the socket close to the plug.

[0027] Compared with the prior art, the high voltage connector of the utility model has the following beneficial effects:

[0028] (1) By opening a slot on the branch line, one end of the terminal line is first placed in the slot, and then the two are reinforced by wrapping with a hoop, welding, etc., and the fixing firmness is relatively high, thereby ensuring the safe operation of the high-voltage connector;

[0029] (2) By connecting each fuse in series with two terminals connected in parallel, the number of fuses can be reduced while ensuring the integrity of the branch circuit, which not only saves design costs but also facilitates the layout and assembly of the high-voltage connector. By providing an inspection port and a cover plate, subsequent maintenance of the fuse can be facilitated; (3) By providing a first sealing ring and a second sealing ring, the connection sealing between the plug and the socket and the connection sealing between the socket and the battery pack can be improved, thereby improving the overall sealing performance of the high-voltage connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 these drawings without paying creative work.

[0031] Figure 1 This is a three-dimensional diagram of a fuse in a high-voltage connector of the utility model;

[0032] Figure 2 This is an exploded view of a copper busbar in a high-voltage connector of the utility model;

[0033] Figure 3 This is an exploded view of an inspection port in a high-voltage connector of the utility model;

[0034] Figure 4 This is a three-dimensional diagram of a high-voltage connector of the utility model located on one side of a socket;

[0035] Figure 5This is a three-dimensional diagram of a high-voltage connector of the utility model located on one side of the plug;

[0036] Figure 6 The utility model is a three-dimensional diagram of a socket in a high-voltage connector.

[0037] Among them: 1. plug; 11. shell; 12. cover; 101. inspection port; 2. fuse; 21. fixing bracket; 22. fuse body; 3. first connecting line; 31. branch line; 311. copper busbar; 32. terminal line; 33. hoop; 301. slot; 4. second connecting line; 5. terminal; 6. socket; 7. third connecting line; 8. sealing mechanism; 81. first sealing ring; 82. second sealing ring; 9. handle. DETAILED DESCRIPTION

[0038] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figure 1-6 As shown, a high-voltage connector of the utility model comprises a plug 1, a fuse 2, a first connecting wire 3, a second connecting wire 4, a terminal 5, a socket 6, two third connecting wires 7, a sealing mechanism 8 and a handle 9.

[0040] The plug 1 is the main frame of the high voltage connector and is used to carry some components.

[0041] Fuse 2 is used to protect the branch circuit connecting the battery pack and the high-voltage line. When the current of the branch circuit exceeds a specified value, fuse 2 interrupts the connection of the branch circuit.

[0042] The first connecting line 3 is a part of the branch circuit, and the first connecting line 3 includes two branch lines 31, two terminal lines 32 and a hoop 33, wherein the branch line 31 is fixedly arranged at one end of the fuse 2 and electrically connected thereto, and a slot 301 is provided at the end of the branch line 31; one end of the terminal line 32 is arranged in the slot 301, and is fixed and electrically connected thereto, and the terminal line 32 and the slot 301 correspond one to one; the terminal line 32 is first inserted into the slot 301, and then fixedly connected by other means, so that one end of the branch line 31 can cover and fix one end of the terminal line 32, thereby improving the firmness of the connection between the two and avoiding the possibility of loosening of the two.

[0043] like Figure 2As shown, the branch line 31 includes two fixedly connected copper bars 311. One end of the two copper bars 311 on the same branch line 31 is set against and connected to the fuse 2, and the other end is set at an interval to form a slot 301 for connecting to the terminal line 32; the two copper bars 311 are welded after being fitted together, which can reduce the processing difficulty of the branch line 31 and improve the processing efficiency of the branch line 31.

[0044] like Figure 1 As shown, the hoop 33 is fixedly arranged on the outside of the branch line 31 in a slidable manner. Specifically, the length of the hoop 33 along the thickness of the branch line 31 can be equal to the sum of the thickness of the two copper bars 311 and the thickness of the terminal line 32, so that the hoop 33 can be slidably arranged on the outside of the branch line 31. When the hoop 33 slides to the specified position, that is, the end of the terminal line 32 close to the branch line 31 is located in the hoop 33, and then the hoop 33 is fixed to the branch line 31 by squeezing or welding the hoop 33; the hoop 33 performs secondary reinforcement on the connection between the branch line 31 and the terminal line 32, and further improves its fixing firmness; of course, in order to reduce the processing difficulty of the first connecting line 3 and improve its assembly efficiency, it is preferred to set the hoop 33 and the branch line 31 as a whole, and after the terminal line 32 is inserted into the slot 301, the terminal line 32 and the branch line 31 can be directly welded.

[0045] The second connecting line 4 is a part of the branch circuit. The second connecting line 4 is fixedly arranged at one end of the fuse 2 away from the first connecting line 3 and is electrically connected thereto.

[0046] Terminal 5 is used to communicate with the high-voltage box. In the design of dual-branch battery pack + high-voltage box, four terminals 5 are provided. Fuse 2, first connection line 3 and second connection line 4 are each provided with two, and fuse 2, first connection line 3, second connection line 4 and one end of terminal 5 are all fixedly arranged in plug 1. Terminal 5 is fixed and electrically connected to terminal line 32, and corresponds one to one, such as Figure 1 As shown, the branch circuit in the plug 1 includes the second connecting wire 4, the fuse 2, the branch line 31, the terminal line 32 and the terminal 5 in sequence. The four branch circuits consisting of the branch line 31, the terminal line 32 and the terminal 5 are connected in parallel with each other and are respectively connected in series with the circuit consisting of the two second connecting wires 4 and the fuse 2, thereby reducing the number of fuses 2 used, which not only saves the design cost of the high-voltage connector, but also facilitates the layout and assembly of the high-voltage connector.

[0047] Terminal 5 can use a metal connecting rod to be plugged in and out of the high-voltage box, or it can directly use a wire to connect to the corresponding wire in the high-voltage box. One end of terminal 5 is fixedly connected to the end of terminal wire 32 by ultrasonic welding.

[0048] like Figure 3As shown, the plug 1 includes a shell 11 and a cover plate 12, wherein an inspection port 101 is opened on the shell 11, and the second connecting line 4, the fuse 2 and the first connecting line 3 are exposed in the inspection port 101; the cover plate 12 is detachably fixed to the shell 11 and blocks the inspection port 101. By disassembling and assembling the cover plate 12, the fuse 2 and other components can be easily replaced and maintained, thereby improving the maintenance convenience of the high-voltage connector.

[0049] like Figure 1 As shown, the fuse 2 includes two fixing frames 21 and a fuse body 22, wherein the two fixing frames 21 are detachably fixed on the branch line 31 and the second connecting line 4, respectively, and are electrically connected thereto, and one side of the fixing frame 21 is provided with a mounting groove for clamping the fuse body 22; the fuse body 22 is fixedly arranged between the two fixing frames 21 and is electrically connected thereto, and the fuse body 22 can be replaced by removing or bending one of the fixing frames 21, thereby making the maintenance operation of the fuse 2 more convenient.

[0050] The socket 6 is another main frame of the high-voltage connector, which is used to be installed on the battery pack. When connecting and disconnecting the battery pack and the high-voltage box, the plug 1 can be disassembled and assembled, which reduces the damage to the battery pack. The socket 6 is snap-fitted and fixed on the plug 1, thereby realizing the quick disassembly and assembly of the socket 6 and the plug 1.

[0051] The third connecting wire 7 is part of the DC circuit. The third connecting wire 7 is fixedly arranged in the socket 6 and is detachably fixedly connected to the second connecting wire 4. The third connecting wire 7 corresponds to the second connecting wire 4 one by one and is electrically connected, so that the battery pack and the high-voltage box are connected by the circuit of the third connecting wire 7, the second connecting wire 4, the fuse 2, the branch wire 31, the terminal wire 32 and the terminal 5; the third connecting wire 7 and the socket 6 are preferably connected by a sealant to achieve self-sealing of the socket 6 when it is not connected to the plug 1.

[0052] The sealing mechanism 8 is used to improve the sealing performance of the high-voltage connector. The sealing mechanism 8 includes a first sealing ring 81 and a second sealing ring 82. Figure 6 As shown, the first sealing ring 81 is fixedly arranged on the socket 6 and abuts against the plug 1, thereby improving the sealing performance of the connection between the plug 1 and the socket 6; Figure 4 As shown, the second sealing ring 82 is fixedly arranged on the socket 6 and abuts against the side wall of the battery pack, so as to improve the sealing performance of the connection between the socket 6 and the battery pack; the sealing mechanism 8 seals the connection position of the socket 6 in coordination with the sealing between the socket 6 and the third connecting line 7, thereby improving the overall sealing performance of the high-voltage connector.

[0053] The handle 9 is used to improve the convenience of disassembly and assembly of the plug 1. Figure 5As shown, one end of the handle 9 (the lower position in the figure) is rotatably set on the plug 1, and the other end (the upper position in the figure) is selectively fixedly connected thereto, and can be selectively fixed by means of a latch connection or the like; the handle 9 is abutted against a side of the socket 6 close to the plug 1, and when the upper end of the handle 9 is not fixedly connected to the plug 1, when the handle 9 is rotated upward, the handle 9 abuts against the socket 6, so that the plug 1 is separated from the socket 6, thereby facilitating the disassembly of the high-voltage connector, and when the high-voltage connector is in normal use, the upper end of the handle 9 needs to be fixedly connected to the plug 1.

[0054] A method of using a high-voltage connector of the utility model is as follows:

[0055] First, fix the socket 6 on the battery pack, and connect the third connecting line 7 with the relevant circuits inside the battery pack, then connect the terminal 5 with the relevant circuits in the high-voltage box, and finally insert the plug 1 into the socket 6, and the battery pack and the high-voltage box are connected; when the battery pack and the high-voltage box need to be separated, just unplug the plug 1 from the socket 6.

[0056] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high voltage connector, characterized in that: It comprises a fuse (2), a first connecting line (3) and a second connecting line (4), wherein: The first connecting line (3) comprises two branch lines (31) and two terminal lines (32), wherein: The branch line (31) and the second connecting line (4) are respectively fixedly arranged at two ends of the fuse (2) and electrically connected thereto, and a slot (301) is provided at the end of the branch line (31); One end of the terminal wire (32) is arranged in the slot (301) and is fixed and electrically connected thereto, and the terminal wire (32) and the slot (301) correspond one to one.

2. A high voltage connector according to claim 1, characterized in that: The branch line (31) comprises two fixedly connected copper bars (311), one end of the two copper bars (311) on the same branch line (31) is arranged in abutment with each other, and the other end is arranged at intervals to form the slot (301).

3. A high voltage connector according to claim 2, characterized in that: The first connecting line (3) further comprises a hoop (33), the hoop (33) being fixedly arranged on the outside of the branch line (31) in a slidable manner, and one end of the terminal line (32) close to the branch line (31) is located inside the hoop (33).

4. A high voltage connector according to claim 1, characterized in that: The fuse (2) comprises two fixing frames (21) and a fuse body (22), wherein: The two fixing frames (21) are respectively detachably fixed on the branch line (31) and the second connecting line (4), and are electrically connected thereto; The fuse body (22) is fixedly arranged between the two fixing frames (21) and is electrically connected thereto.

5. A high voltage connector according to any one of claims 1 to 4, characterized in that: It also includes a plug (1) and four terminals (5), wherein: The fuse (2), the first connecting wire (3) and the second connecting wire (4) are each provided with two, and the fuse (2), the first connecting wire (3), the second connecting wire (4) and one end of the terminal (5) are all fixedly arranged in the plug (1); The terminal (5) is fixed and electrically connected to the terminal wire (32) and corresponds one to one.

6. A high voltage connector according to claim 5, characterized in that: The plug (1) comprises a housing (11) and a cover plate (12), wherein: The housing (11) is provided with an inspection opening (101); The cover plate (12) is detachably fixed to the shell (11) and blocks the inspection opening (101).

7. A high voltage connector according to claim 5, characterized in that: It also includes a socket (6) and two third connecting wires (7), wherein: The socket (6) is snap-fitted and fixed on the plug (1) and is used for being installed on a battery pack; The third connecting wire (7) is fixedly arranged in the socket (6) and is detachably fixedly connected to the second connecting wire (4); the third connecting wire (7) corresponds to the second connecting wire (4) one by one and is electrically connected.

8. A high voltage connector according to claim 7, characterized in that: It also comprises a sealing mechanism (8), wherein the sealing mechanism (8) comprises a first sealing ring (81), wherein the first sealing ring (81) is fixedly arranged on the socket (6) and abuts against the plug (1).

9. A high voltage connector according to claim 8, characterized in that: The sealing mechanism (8) comprises a second sealing ring (82), which is fixedly arranged on the socket (6) and is used to abut against the battery pack.

10. A high voltage connector according to claim 7, characterized in that: It also comprises a handle (9), one end of which is rotatably arranged on the plug (1) and the other end is selectively fixedly connected thereto, and the handle (9) abuts against a side of the socket (6) close to the plug (1).

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