CN108282970B

CN108282970B - Multifunctional wiring device of electric automobile controller

Info

Publication number: CN108282970B
Application number: CN201711295010.2A
Authority: CN
Inventors: 王国强; 谢丹; 肖舜; 王胜勇
Original assignee: Wisdri Wuhan Automation Co Ltd
Current assignee: Wisdri Wuhan Automation Co Ltd
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2020-08-21
Anticipated expiration: 2037-12-08
Also published as: CN108282970A

Abstract

The invention discloses a multifunctional wiring device of an electric automobile controller, which comprises a wiring cavity, wherein a first waterproof sealing part is arranged on a cavity opening; a second waterproof sealing part is arranged on the outer side wall of the front side cavity wall of the wiring cavity, a copper bar part which is integrally molded on the outer side wall of the rear side cavity wall of the wiring cavity extends outwards to form a direct current conducting end and an alternating current conducting end respectively, the alternating current conducting end and the direct current conducting end are arranged corresponding to an alternating current wiring end and a direct current wiring end of an electric automobile controller respectively, and Hall sensors are sleeved on the alternating current conducting ends respectively; the bottom of the cavity is provided with an EMC board, and the other end of the copper bar piece at the direct current conducting end is clamped with the positive and negative wiring ports of the EMC board. Through adopting the integrative copper bar spare that sets up that moulds plastics of in-mould shaping technology to install EMC and hall sensor integration on the wiring cavity, guarantee safe electric distance, reduced the volume again greatly, simultaneously, through setting up first, second waterproof sealing spare, reach effectual isolation sealing wiring district and functional device district.

Description

Multifunctional wiring device of electric automobile controller

Technical Field

The invention relates to the technical field of new energy electric automobiles, in particular to a multifunctional wiring device of an electric automobile controller.

Background

The controller, the battery technology, the motor driving technology and the whole electric vehicle technology are collectively called as four key technologies of the electric vehicle. Electric automobile controller is used for controlling subassembly such as battery, motor, and its function includes: battery management, engine, motor energy management, etc. The controller system is composed of control systems such as an ECU (electronic control Unit), sensing systems such as sensors and the like, and subsystems such as driver intention recognition and the like. The motor controller is used as an electric energy conversion unit for connecting a battery and a motor in the new energy automobile and is the core of a motor driving and controlling system. At present, new energy electric vehicles develop rapidly, the requirements for reliability, high power density and light weight of the whole electric vehicles are continuously improved, and the requirements for structural design, installation, maintainability and reliability of a controller are higher. The existing wire inlet and outlet modes of the domestic electric automobile controller mainly comprise a quick-inserting structure without the operation of opening a wiring cover and a structure for installing a pressing wire by the operation of opening the wiring cover. Most controllers in the market all use the switching terminal to connect functional devices, and this scheme does not accomplish wiring district and functional device district sealed isolation, in case because the outside waterproof inefficacy of controller complete machine, especially to the maloperation when needing to open the wiring lid operation wiring or the condition of not installing the fastening when closing the lid, outside leaking can directly get into functional device district through the wiring district, causes the device to damage, and the complete machine is scrapped, has serious incident even.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a multifunctional wiring device of an electric vehicle controller, which is used for solving the problems of large volume, single function, no wiring area and no sealing isolation of a functional area of the conventional connecting device.

The invention provides a multifunctional wiring device of an electric automobile controller, which comprises

The wiring cavity consists of four cavity walls of a front cavity, a rear cavity, a left cavity and a right cavity and the bottom of the cavity, and a first waterproof sealing element is arranged on a cavity opening of the wiring cavity;

a PG connecting hole corresponding to a PG mounting hole in the outer shell of the electric automobile controller is formed in the front side cavity wall of the wiring cavity, a second waterproof sealing element is arranged on the outer side wall of the front side cavity wall, and a through hole consistent with the PG connecting hole is correspondingly formed in the second waterproof sealing element;

a plurality of copper bar pieces are integrally molded on the outer side wall of the wiring cavity relative to the rear side cavity wall of the device mounting area of the electric automobile controller, the copper bar pieces respectively extend outwards to form a conduction end, the conduction end comprises a direct current conduction end and an alternating current conduction end, the alternating current conduction end and the direct current conduction end are respectively arranged corresponding to an alternating current wiring end and a direct current wiring end of the electric automobile controller, and Hall sensors are respectively sleeved on the alternating current conduction end;

the wiring cavity is characterized in that an EMC plate is arranged at the bottom of the wiring cavity, the other end of the copper bar piece at the direct current guide end is bent towards the bottom of the wiring cavity and extends through the bottom of the wiring cavity, and the positive and negative wiring ports of the EMC plate are clamped.

Preferably, an inner groove is formed in the outer side wall of the front side cavity wall, the shape of the inner groove is consistent with that of the second waterproof sealing piece, and the inner concave depth of the inner groove is smaller than the thickness of the second waterproof sealing piece.

Preferably, the front side cavity wall of the electric automobile controller shell body, the wiring cavity and the second waterproof sealing part are correspondingly provided with fastening screw holes, and the multifunctional wiring device simultaneously penetrates through the fastening screw holes of the electric automobile controller shell body, the second waterproof sealing part and the front side cavity wall through a locking nut and is fixed on the inner side of the electric automobile controller shell body.

Preferably, the cavity opening of the wiring cavity is matched with a wiring cover plate on the outer shell of the electric automobile controller.

Preferably, the copper bar extends outwards to form 5 conducting ends, and the conducting ends are respectively arranged opposite to DC +, DC-U, V, W wiring ends of the electric automobile controller.

According to the multifunctional wiring device of the electric automobile controller, the copper bar piece is integrally arranged on the wiring cavity in an injection molding mode through the in-mold molding process, so that the EMC and the Hall sensor are integrally installed on the wiring cavity, the safe electrical distance is effectively guaranteed, the connection is reliable, the size is greatly reduced, and the modularization is enhanced. Meanwhile, a first waterproof sealing piece and a second waterproof sealing piece are respectively arranged at the matching positions of the wiring cavity, the whole machine shell and the wiring cover plate, so that the wiring area and the functional device area are effectively isolated and sealed. Once water enters the wiring terminal device to cause short circuit due to wrong wiring installation, the whole machine is controlled to be powered off through faults, and water cannot enter the device area, so that devices and a whole machine controller are effectively protected, and the safety and reliability are improved. Compared with the prior art, the invention not only realizes the modularization of the controller by reducing the volume, but also is compatible with the use of a fast plug and wire pressing mode for the wire inlet and outlet of the whole controller, and increases the IP67 protection level of an internal wiring area on the basis of the IP67 of the whole controller, thereby effectively preventing potential safety hazard caused by possible misoperation and greatly improving the reliability of the whole controller.

Drawings

FIG. 1 is an exploded perspective view of a multifunctional wiring device of an electric vehicle controller according to the present invention;

FIG. 2 is an exploded view of the multifunctional wiring device of the electric vehicle controller according to the present invention;

FIG. 3 is a schematic perspective view of the copper bar assembly of the present invention being injection molded onto the wiring cavity;

FIG. 4 is a schematic perspective view of a Hall sensor according to the present invention mounted on a wiring cavity;

fig. 5 is a bottom schematic view of the multi-function wiring device of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

The invention provides a multifunctional wiring device of an electric automobile controller, which comprises a wiring cavity 10 consisting of four

cavity walls

11, 12, 13 and 14, namely a front cavity wall, a rear cavity wall, a left cavity wall and a right cavity wall, and a cavity bottom 15, as shown in fig. 1, wherein a first waterproof sealing element 20 is arranged on a cavity opening 101 of the wiring cavity 10, the cavity opening 101 of the wiring cavity 10 is matched with a wiring cover plate on an outer shell of the electric automobile controller, and the upper cover buckles the first waterproof sealing element 20, so that the compression sealing of the cavity opening 101 of the wiring cavity 10 is realized, the sealing protection grade of a device installation area and a wiring area is ensured, and external water leakage is prevented from entering the device installation area of the electric automobile controller from a gap between the cavity opening 101 of the wiring cavity 10 and the wiring cover plate.

The wiring cavity 10 is characterized in that a front side cavity wall 11 is provided with a PG connecting hole 102 corresponding to a PG mounting hole on an electric automobile controller outer shell, an inner groove 111 is formed in the outer side wall of the front side cavity wall 11, a second waterproof sealing element 30 with the same shape as the inner groove 111 is arranged in the inner groove 111, a through hole corresponding to the PG connecting hole 102 is correspondingly formed in the second waterproof sealing element 30, and the inner concave depth of the inner groove 111 is smaller than the thickness of the second waterproof sealing element 30.

The utility model discloses a waterproof sealing device for electric automobile controller, including electric automobile controller shell body, wiring cavity 10, front side chamber wall 11 and second waterproof sealing member 30, the corresponding fastening screw that is equipped with on electric automobile controller shell body, wiring cavity 10 and the second waterproof sealing member 30, multi-functional termination passes electric automobile controller shell body, second waterproof sealing member 30 and front side chamber wall 11's fastening screw simultaneously through a lock nut, fixes at electric automobile controller shell body inboard, simultaneously, at the in-process of lock nut locking, front side chamber wall 11 and electric automobile controller shell body extrude second waterproof sealing member 30, make and closely laminate in second waterproof sealing member 30 both sides between multi-functional termination and the electric automobile controller shell body, realize compression seal between multi-functional termination and the electric automobile controller shell body to guarantee the sealed protection level of complete machine and device installing zone and wiring zone.

As shown in fig. 2 to 4, 5 copper bars 40 are integrally molded on the outer side wall of the wiring cavity 10 opposite to the rear side cavity wall 12 of the device mounting area of the electric vehicle controller, 5 conducting ends 41 extend outwards from the copper bars 40, each conducting end 41 includes a direct current conducting end 41 and an alternating current conducting end 41, the direct current conducting ends 41 are respectively arranged corresponding to the DC + and DC-terminals of the electric vehicle controller, the alternating current conducting ends 41 are respectively arranged corresponding to the U, V, W terminals of the electric vehicle controller, and the alternating current conducting ends 41 are respectively sleeved with hall sensors 50.

As shown in fig. 5, the cavity bottom 15 of the wiring cavity 10 is provided with an EMC board 60, and the other end of the copper bar 40 of the direct current conducting terminal 41 is bent toward the bottom 15 of the wiring cavity 10 and extends through the bottom 15 of the wiring cavity 10 to be clamped with the positive and negative wiring ports of the EMC board 60.

According to the multifunctional wiring device of the electric automobile controller, the copper bar piece 40 is integrally arranged on the wiring cavity 10 in an injection molding mode through the in-mold molding process, so that the EMC and the Hall sensor 50 are integrally installed on the wiring cavity 10, the safe electrical distance is effectively guaranteed, the connection is reliable, the size is greatly reduced, and the modularization is enhanced. Meanwhile, a first waterproof sealing part 20 and a second waterproof sealing part 30 are respectively arranged at the matching positions of the wiring cavity 10, the whole machine shell and the wiring cover plate, so that the wiring area and the functional device area are effectively isolated and sealed. Once water enters the wiring terminal device to cause short circuit due to wrong wiring installation, the whole machine is controlled to be powered off through faults, and water cannot enter the device area, so that devices and a whole machine controller are effectively protected, and the safety and reliability are improved. Compared with the prior art, the invention not only realizes the modularization of the controller by reducing the volume, but also is compatible with the use of a fast plug and wire pressing mode for the wire inlet and outlet of the whole controller, and increases the IP67 protection level of an internal wiring area on the basis of the IP67 of the whole controller, thereby effectively preventing potential safety hazard caused by possible misoperation and greatly improving the reliability of the whole controller.

The above apparatus embodiments and method embodiments are in one-to-one correspondence, and reference may be made to the method embodiments for a brief point of the apparatus embodiments.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in random access memory, read only memory, electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The multifunctional wiring device of the electric automobile controller is characterized by comprising a wiring cavity (10) consisting of four cavity walls (11, 12, 13 and 14) of a front cavity wall, a rear cavity wall, a left cavity wall and a right cavity wall and a cavity bottom (15), wherein a first waterproof sealing element (20) is arranged on a cavity opening (101) of the wiring cavity (10);

a PG connecting hole (102) corresponding to a PG mounting hole in an electric automobile controller outer shell is formed in a front side cavity wall (11) of the wiring cavity (10), a second waterproof sealing element (30) is arranged on the outer side wall of the front side cavity wall (11), and a through hole consistent with the PG connecting hole (102) is correspondingly formed in the second waterproof sealing element (30);

a plurality of copper bar pieces (40) are integrally molded on the outer side wall of the wiring cavity (10) relative to the rear side cavity wall (12) of the device installation area of the electric automobile controller, the copper bar pieces (40) respectively extend outwards to form a conduction end (41), the conduction end (41) comprises a direct current conduction end (41) and an alternating current conduction end (41), the alternating current conduction end and the direct current conduction end (41) are respectively arranged corresponding to alternating current wiring ends and direct current wiring ends of the electric automobile controller, and Hall sensors (50) are respectively sleeved on the alternating current conduction end (41);

an EMC (electro magnetic compatibility) board (60) is arranged at the bottom (15) of the wiring cavity (10), and the other end of the copper bar piece (40) of the direct current conducting end (41) is bent towards the bottom (15) of the wiring cavity (10), extends through the bottom (15) of the wiring cavity (10) and is clamped with a positive wiring port and a negative wiring port of the EMC board (60);

fastening screw holes are correspondingly formed in the outer shell of the electric automobile controller, the front side cavity wall (11) of the wiring cavity (10) and the second waterproof sealing element (30), and the multifunctional wiring device simultaneously penetrates through the fastening screw holes in the outer shell of the electric automobile controller, the second waterproof sealing element (30) and the front side cavity wall (11) through a locking nut and is fixed on the inner side of the outer shell of the electric automobile controller;

and a cavity opening (101) of the wiring cavity (10) is matched with a wiring cover plate on a shell of the electric automobile controller through a waterproof sealing rubber strip.

2. The multifunctional wiring device of the controller of the electric automobile according to claim 1, wherein an inner groove (111) is formed on the outer side wall of the front side cavity wall (11), the inner groove (111) is in accordance with the shape of the second waterproof sealing member (30), and the inner concave depth is smaller than the thickness of the second waterproof sealing member (30).

3. The multifunctional wiring device of the controller of the electric automobile according to claim 1, wherein the copper bar member (40) extends outwards for 5 conducting ends (41), and the conducting ends (41) are respectively arranged opposite to DC +, DC-, U, V, W terminals of the controller of the electric automobile.