CN209896394U

CN209896394U - Wire harness

Info

Publication number: CN209896394U
Application number: CN201920905967.2U
Authority: CN
Inventors: 宋贤
Original assignee: Shenzhen Mammoth Electric Technology Co Ltd
Current assignee: Shenzhen Mammoth Electric Technology Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-01-03
Anticipated expiration: 2029-06-14

Abstract

The utility model relates to a wire rod technical field provides a pencil, include, bayonet joint and many wires, be equipped with positive terminal, negative terminal, GND terminal and PDET terminal in the bayonet joint, many the wire includes at least: the plug comprises a positive wire and a negative wire, wherein one end of the positive wire is electrically connected with the positive terminal, one end of the negative wire is electrically connected with the negative terminal, the GND terminal and the PDET terminal are in short circuit in the plug, and the plug lengths of the positive terminal and the negative terminal are both greater than those of the GND terminal and the PDET terminal. Through the grafting length that changes positive terminal and negative terminal to and GND terminal and PDET terminal when pegging graft with a time delay charging circuit that socket or socket constitute, effectively avoided the risk that the electric spark produced, make the plug of pencil like this have the high advantage of security, simultaneously, this pencil still has simple structure, the convenient advantage of production.

Description

Wire harness

Technical Field

The utility model belongs to the technical field of the wire rod technique and specifically relates to a pencil is related to.

Background

The wiring harness is an electrical connection for carrying signals and power between devices. The wire harness is widely used in various electronic devices, such as electric vehicles, computers, extension sockets and the like, so the quality of the wire harness directly influences the normal use of the electronic devices.

As is well known, when one end of a wire harness is disposed on an electronic device and the other end of the wire harness is disposed with a plug, the plug is directly plugged into or unplugged from a socket or an interface with electricity, which is prone to generate electric sparks and short circuits, and may cause fire and safety accidents due to burning of the electronic device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pencil aims at solving among the prior art pencil when with electrified socket or interface plug, produces the technical problem of electric spark easily.

In order to achieve the above object, the utility model adopts the following technical scheme: a wire harness comprises a plug and a plurality of wires, wherein a positive terminal, a negative terminal, a GND terminal and a PDET terminal are arranged in the plug, and the plurality of wires at least comprise: the plug comprises a positive wire and a negative wire, wherein one end of the positive wire is electrically connected with the positive terminal, one end of the negative wire is electrically connected with the negative terminal, the GND terminal and the PDET terminal are in short circuit in the plug, and the plug lengths of the positive terminal and the negative terminal are both greater than those of the GND terminal and the PDET terminal.

Preferably: the plug is provided with a hollow cylinder, a partition board is arranged in the hollow cylinder, and the partition board is used for separating the positive terminal, the negative terminal, the GND terminal and the PDET terminal.

Preferably: the insertion end faces of the positive electrode terminal, the negative electrode terminal, the GND terminal and the PDET terminal are lower than the end face of the hollow cylinder.

Preferably: the plug end face of the positive terminal is flush with the plug end face of the negative terminal, the plug end face of the GND terminal is flush with the plug end face of the PDET terminal, and the height difference between the plug end face of the positive terminal and the plug end face of the GND terminal is 3.0-5.0 mm.

Preferably: the plug end face of the positive terminal is flush with the plug end face of the negative terminal, and the height difference between the plug end face of the positive terminal and the end face of the hollow cylinder is 3.0-6.0 mm.

Preferably: the positive electrode wire is provided with a fuse, and the outer surface of the fuse is coated with a heat-shrinkable sleeve.

Preferably: the positive line is also connected with a breaker.

Preferably: the fuse is an aluminum wire, a copper wire or a silver wire.

Preferably: still be equipped with high data terminal and low data terminal in the bayonet joint, the wire still includes: the high data line is electrically connected with the high data terminal, and the low data line is connected with the low data terminal, and the high data line and the low data line are hinged with each other.

Preferably: and a plurality of wires are sleeved with protective sleeves.

The utility model has the advantages that:

according to the wire harness provided by the utility model, when the plug connector of the wire harness is plugged with the corresponding socket or socket, the positive terminal and the negative terminal are plugged firstly, but are in the non-energized state at the moment, and after the GND terminal and the PDET terminal are plugged with the socket or socket, the positive terminal and the negative terminal are in the energized state, so that the charging time is delayed; similarly, when the wiring harness is pulled out, the GND terminal and the PDET terminal are firstly separated to enable the positive terminal and the negative terminal to be in a power-off state, so that the phenomenon of electric sparks of the wiring harness in the plugging and unplugging process is effectively prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic plan view of a wire harness provided in an embodiment of the present invention;

fig. 2 is a schematic perspective view of a plug connector of a wire harness according to an embodiment of the present invention;

fig. 3 is a schematic sectional view of a plug connector of a wire harness according to an embodiment of the present invention.

Reference numerals: 1. a plug-in connector; 11. a positive terminal; 12. a negative terminal; 13. a GND terminal; 14. a PDET terminal; 15. a high data terminal; 16. a low data terminal; 17. a hollow cylinder; 18. a partition plate; 2. a wire; 21. a positive line; 22. a negative electrode line; 23. a high data line; 24. a low data line; 3. a fuse; 31. heat-shrinkable tubing; 4. a circuit breaker; 41. a sheet-type pre-insulated terminal; 5. a protective sleeve; 6. and a controller.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to fig. 3, a wire harness according to an embodiment of the present invention will be described. In this embodiment, the wire harness is a power cord wire harness of an electric vehicle battery, a socket or a jack is provided on the electric vehicle battery, one end of the wire harness is electrically connected with the electric vehicle battery, and the other end of the wire harness is electrically connected with the controller 6 of the electric vehicle.

In the present embodiment, the wire harness includes a plug 1 and a plurality of wires 2. The joint is internally provided with a positive terminal 11, a negative terminal 12, a GND terminal 13 and a PDET terminal 14, and the plurality of wires 2 at least comprise: the plug comprises a positive wire 21 and a negative wire 22, wherein one end of the positive wire 21 is electrically connected with the positive terminal 11, the other end of the positive wire 21 is electrically connected with a circuit board in the controller 6, one end of the negative wire 22 is electrically connected with the negative terminal 12, the other end of the negative wire 22 is electrically connected with the circuit board in the controller 6, the GND terminal 13 and the PDET terminal 14 are in short circuit in the plug 1, and the plug lengths of the positive terminal 11 and the negative terminal 12 are both greater than the plug lengths of the GND terminal 13 and the PDET terminal 14. The insertion length refers to the matching length of each terminal when the terminal is inserted into the socket or the jack.

In this embodiment, the controller 6 is an MCCU (Multiple Communication Control Unit) or a VCU (Vehicle Control Unit, complete Vehicle controller 6), and the MCCU may be understood as: the battery management system of the electric vehicle, the motor controller 6, and the vehicle-mounted charger are integrated into an integrated controller 6.

When the plug 1 is plugged with a socket or a jack on a battery of an electric vehicle, the positive terminal 11 and the negative terminal 12 are firstly plugged with the socket or the jack, but at the moment, the positive terminal 11 and the negative terminal 12 are not electrified, and after the GND terminal 13 and the PDET terminal 14 are plugged with the socket or the jack, the circuit communication (the controller 6 is internally provided with a discharge delay control circuit) is realized, so that the positive terminal 11 and the negative terminal 12 are in an electrified state, and the charging and discharging time is delayed. When the socket or the socket on bayonet joint 1 and the electric motor car battery separate, GND terminal 13 separates with socket or socket earlier with PDET terminal 14 to make anodal terminal 11 and negative pole terminal 12 be in the outage state, this has the phenomenon that spark appears in plug 1 at the plug in-process, thereby has the guard action to electric motor car battery and controller 6, and prevents the emergence of incident.

The utility model provides a pair of pencil through the length that changes positive terminal 11 and negative terminal 12 to and GND terminal 13 and PDET terminal 14 when pegging graft with a time delay charging circuit that socket or socket are constituteed, can effectively prevent the production of electric spark, make the plug of pencil have the high advantage of security like this, simultaneously, this pencil still has simple structure, production convenience's advantage.

Specifically, in the present embodiment, the plug 1 is provided with a hollow cylinder 17, and a separator 18 is provided in the hollow cylinder 17, the separator 18 being used to separate the positive electrode terminal 11, the negative electrode terminal 12, and the GND terminal 13 and the PDET terminal 14 from each other. Hollow cylinder 17 is convenient for peg graft with socket or socket, and baffle 18 has on the one hand prevents slow-witted effect for prevent that bayonet joint 1 from inserting the mistake, and on the other hand is used for preventing mutual interference between each terminal, and to a certain extent, baffle 18 still has limiting displacement, can prevent at bayonet joint 1 at the plug in-process, the phenomenon of bending appears in each terminal.

Specifically, in the present embodiment, the insertion end faces of the positive electrode terminal 11, the negative electrode terminal 12, the GND terminal 13, and the PDET terminal 14 are lower than the end face of the hollow cylinder 17. That is, the positive electrode terminal 11, the negative electrode terminal 12, the GND terminal 13 and the PDET terminal 14 are disposed entirely inside the hollow cylinder 17, so that the hollow cylinder 17 can provide a good protection function for the positive electrode terminal 11, the negative electrode terminal 12, the GND terminal 13 and the PDET terminal 14.

Specifically, the plugging end face of the positive terminal 11 is flush with the plugging end face of the negative terminal 12, the plugging end face of the GND terminal 13 is flush with the plugging end face of the PDET terminal 14, and the height difference between the plugging end face of the positive terminal 11 and the plugging end face of the GND terminal 13 is 3.0mm to 5.0mm, preferably 4.0 mm.

Specifically, the plugging end face of the positive terminal 11 is flush with the plugging end face of the negative terminal 12, and the height difference between the plugging end face of the positive terminal 11 and the end face of the hollow cylinder 17 is 3.0mm to 6.0mm, preferably 5.0 mm.

Specifically, the fuse 3 is provided on the positive electrode wire 21, and the outer surface of the fuse 3 is covered with a heat-shrinkable tube 31. In the present embodiment, the fuse 3 is disposed inside the controller 6, and the fuse 3 is used for protecting the circuit from being damaged by the controller 6 or the battery of the electric vehicle due to excessive or abnormal current.

More specifically, in the present embodiment, the fuse 3 is an aluminum wire, and when the aluminum wire is melted, the heat-shrinkable sleeve 31 can perform a covering function, so as to perform a good power-off function. In this embodiment, the fuse 3 is arranged inside the controller 6, and the fuse 3 is utilized to sense the temperature and the current in the controller 6, so that when the temperature of the controller 6 is too high or the current is too large, the power-off protection can be performed timely, and disasters caused by internal faults of the controller 6, such as electric fire, can be effectively avoided. In other embodiments, the fuse 3 is made of pure silver wire or pure copper wire, and the pure silver wire and the pure copper wire have good electric conduction line and electric sensitivity, can induce the slight change of current and temperature, and improve the performance of safe power failure.

Specifically, in the present embodiment, the breaker 4 is also connected to the positive line 21. The circuit breaker 4 sets up in the outside of controller 6, and positive polar line 21 adopts the piece type to insulate against each other terminal 41 in advance to be connected with circuit breaker 4, and circuit breaker 4 is used for further playing the guard action that opens circuit to the pencil, and simultaneously, circuit breaker 4 also can initiatively handle pencil inlet wire outage, has convenient operation's advantage.

Specifically, in this embodiment, a high data terminal 15 and a low data terminal 16 are further disposed in the plug 1, and the wire 2 further includes: a high data line 23(CAN-H) electrically connected to the high data terminal 15, and a low data line 24(CAN-L) connected to the low data terminal 16, the high data line 23 and the low data line 24 being hinged to each other for improving the anti-interference capability thereof, wherein the plugging end faces of the high data terminal 15 and the low data terminal 16 are flush with the plugging end face of the GND terminal 13.

Specifically, in the present embodiment, the plurality of wires 2 are sleeved with the protective sheath 5. In this embodiment, protective sheath 5 cover is established and is located the outside part of controller 6 at many wires 2, and protective sheath 5 is used for putting in order the protection to many wires 2, improves the clean and tidy nature of pencil. The protective sleeve 5 is made of rubber or soft rubber materials, so that the protective sleeve 5 has good flexibility while having insulativity.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A wire harness comprises a plug connector and a plurality of wires, and is characterized in that: be equipped with positive terminal, negative pole terminal, GND terminal and PDET terminal in the bayonet joint, many the wire includes at least: the plug comprises a positive wire and a negative wire, wherein one end of the positive wire is electrically connected with the positive terminal, one end of the negative wire is electrically connected with the negative terminal, the GND terminal and the PDET terminal are in short circuit in the plug, and the plug lengths of the positive terminal and the negative terminal are both greater than those of the GND terminal and the PDET terminal.

2. The wire harness according to claim 1, characterized in that: the plug is provided with a hollow cylinder, a partition board is arranged in the hollow cylinder, and the partition board is used for separating the positive terminal, the negative terminal, the GND terminal and the PDET terminal.

3. A wire harness according to claim 2, characterized in that: the insertion end faces of the positive electrode terminal, the negative electrode terminal, the GND terminal and the PDET terminal are lower than the end face of the hollow cylinder.

4. A wire harness according to claim 3, characterized in that: the plug end face of the positive terminal is flush with the plug end face of the negative terminal, the plug end face of the GND terminal is flush with the plug end face of the PDET terminal, and the height difference between the plug end face of the positive terminal and the plug end face of the GND terminal is 3.0-5.0 mm.

5. A wire harness according to claim 3, characterized in that: the plug end face of the positive terminal is flush with the plug end face of the negative terminal, and the height difference between the plug end face of the positive terminal and the end face of the hollow cylinder is 3.0-6.0 mm.

6. The wire harness according to any one of claims 1 to 5, wherein: the positive electrode wire is provided with a fuse, and the outer surface of the fuse is coated with a heat-shrinkable sleeve.

7. The wire harness according to any one of claims 1 to 5, wherein: the positive line is also connected with a breaker.

8. The wire harness according to claim 6, wherein: the fuse is an aluminum wire, a copper wire or a silver wire.

9. The wire harness according to any one of claims 1 to 5, wherein: still be equipped with high data terminal and low data terminal in the bayonet joint, the wire still includes: the high data line is electrically connected with the high data terminal, and the low data line is connected with the low data terminal, and the high data line and the low data line are hinged with each other.

10. The wire harness according to any one of claims 1 to 5, wherein: and a plurality of wires are sleeved with protective sleeves.