CN212230631U - Plug connector for electric automobile - Google Patents

Abstract

The utility model discloses a plug connector for electric automobile relates to connector accessory technical field, aims at solving the high-pressure cable electromagnetic interference of electric automobile and the high problem of interface temperature, and its technical scheme main points are: the cable fixing device comprises a wiring terminal, a cable and a fixing shell seat, wherein a bolt hole is formed in the middle of the wiring terminal, the lower end of the wiring terminal is nested at the upper end of the cable, the cable sequentially penetrates through a shielding box, the fixing shell seat and a tail cover from top to bottom, the shielding box is fixedly arranged at the upper end of the fixing shell seat and comprises a protective layer and a shielding layer, a clamping pin is fixedly arranged below the front end of the fixing shell seat, the lower end of the cable is slidably provided with the tail cover, a clamping hole is formed in the front end of the tail cover, and a temperature sensor and a prompt lamp are fixedly; the utility model discloses a plug connector for electric automobile has optimized the electromagnetic shield effect of electric automobile motor interface plug connector, has increased interface high temperature warning function.

Description

Plug connector for electric automobile

Technical Field

The utility model relates to a connector accessory technical field, more specifically say, it relates to a plug connector for electric automobile.

Background

In the field of new energy automobiles, a high-voltage connector is an important device and mainly comprises a contact body, an insulator, a shell, accessories and the like. As the working voltage range of the new energy automobile is increased from 12V of the traditional automobile to 400V, higher requirements on the quality and the precision of the connector are provided, and the new energy automobile has application to the whole automobile and charging facilities. Unlike the 12V voltage of a conventional automobile, the high-voltage cable needs to be considered for preventing overheating or burning, shielding performance, water and dust prevention, and electromagnetic compatibility with the electric system of the whole automobile. In practical use, magnetic interference generated by the high-voltage cable can affect the integrity and accuracy of data transmission in an automobile signal line, and can affect the safety of a whole automobile in severe cases. Therefore, the high voltage cable needs to adopt a shielding wire or the like to reduce magnetic interference.

The conventional plug-in unit for the electric vehicle has the following problems:

1. traditional electric automobile plug connector is equipped with the shielding ring at the outer pot head of cable, and at plug vibrations in-process, the yield appears in the shielding ring, and shielding ring and socket contact interrupt cause the shielding to appear transiently disconnected.

2. Traditional car plug connector does not have temperature detection and early warning device, and the voltage of electric automobile cable is higher, can produce the phenomenon of generating heat, and interface temperature is too high can exert an influence to parts on every side, probably takes place the burning when serious.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a plug connector for electric automobile to solve the problem that the cable shield that mentions in the background art is interrupted and the temperature is too high.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a plug connector for an electric automobile comprises a wiring terminal, a cable and a fixed shell seat, wherein a bolt hole is formed in the middle of the wiring terminal, the lower end of the wiring terminal is nested in the upper end of the cable, the cable sequentially penetrates through a shielding box, the fixed shell seat and a tail cover from top to bottom, the shielding box is fixedly arranged at the upper end of the fixed shell seat, an annular groove is formed in the upper end of the shielding box, a waterproof sealing ring is embedded in the annular groove, a clamping pin is fixedly arranged below the front end of the fixed shell seat, a tail sealing ring is sleeved at the position, corresponding to the lower end of the fixed shell seat, of the cable, the tail cover is slidably arranged at the lower end of the cable, a clamping hole is formed in the front end of the tail cover, a temperature sensor is fixedly arranged at the position, corresponding to the inside of the shielding box, of the upper end of the fixed shell seat, a prompt lamp is fixedly arranged at the, and an insulating layer is wrapped at the position where the cable is contacted with the fixed shell seat.

Furthermore, the outer layer of the shielding box is a protective layer, and the inner layer of the shielding box is a shielding layer.

Through adopting above-mentioned technical scheme, the electromagnetic interference that the high-voltage cable circular telegram produced is by the shielding layer separation, and electric automobile's signal transmission can not receive the interference, and the outside parcel of shielding layer has the protective layer, prevents that the plug process from damaging the shielding layer.

Furthermore, the protective layer is made of hard heat-resistant plastic.

Through adopting above-mentioned technical scheme, the inside shielding layer can be protected to the protective layer of stereoplasm, prevents that shielding layer atress warp and leads to the shielding inefficacy, is favorable to improving electric automobile signal system's stability.

Furthermore, a sealing ring is sleeved at the position where the cable contacts with the shielding box.

Through adopting above-mentioned technical scheme, the cable is under the off-state, and water and dust can not get into the shielded cell inside, prevents inside cable and water contact.

Furthermore, when the tail cover is in a closed state, the clamping pins are clamped with the clamping holes.

Through adopting above-mentioned technical scheme, the tail cover is firmly installed on fixed shell seat under the closure state, cooperates inside sealing washer, prevents that the lower extreme of fixed shell seat from intaking.

Further, the number of the connecting terminals is one, two or three.

By adopting the technical scheme, the utility model discloses binding post's quantity is adjusted according to the needs of power output wiring mouth.

To sum up, the utility model discloses mainly have following beneficial effect:

1. the utility model discloses a, adopt the shielding case to replace the shielding ring of traditional electric automobile plug connector cable, avoided the shielding inefficacy phenomenon that binding post plug process leads to, promoted electric automobile signal transmission's stability.

2. The utility model discloses a, increased temperature detection and early warning device on the basis of original electric automobile plug connector, electric automobile plug connector voltage is up to 400V, and the long-time circular telegram of plug connector can continuously generate heat, in time discovers unusually before the high-temperature damage part, can avoid the emergence of trouble, is favorable to prolonging electric automobile's life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a sectional view taken at a-a in fig. 1 in a state where the tail cover is closed.

In the figure: 1. a wiring terminal; 2. bolt holes; 3. a cable; 4. a shielding box; 401. a protective layer; 402. a shielding layer; 5. a waterproof sealing ring; 6. a fixed housing seat; 601. clamping a pin; 7. a tail sealing ring; 8. a tail cover; 801. a clamping hole; 9. a temperature sensor; 10. a warning light; 11. an insulating layer.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1-3, a plug connector for an electric vehicle includes a connection terminal 1, a cable 3 and a fixing housing 6, a cylindrical through hole is formed in the middle of the fixing housing 6, the cable 3 can pass through the through hole, a bolt hole 2 is formed in the middle of the connection terminal 1, the connection terminal 1 is matched with an outer end nut through the bolt hole 2 to complete connection, the lower end of the connection terminal 1 is nested in the upper end of the cable 3, the cable 3 sequentially passes through a shielding box 4, the fixing housing 6 and a tail cover 8 from top to bottom, a shielding box 4 is fixedly disposed at the upper end of the fixing housing 6, in order to improve the waterproof sealing performance of the plug connector connection, an annular groove is formed in the upper end of the shielding box 4, a waterproof sealing ring 5 is embedded in the annular groove, the outer layer of the shielding box 4 is a protective layer 401, the inner layer of the shielding box 4 is, a clamping pin 601 is fixedly arranged below the front end of the fixed shell seat 6, a tail sealing ring 7 is sleeved at the position of the lower end of the cable 3 corresponding to the lower end of the fixed shell seat 6, a tail cover 8 is slidably arranged at the lower end of the cable 3, a clamping hole 801 is arranged at the front end of the tail cover 8, after the tail cover 8 is closed, the clamping pin 601 is clamped with the clamping hole 801, the upper end of the fixed shell seat 6 is fixedly provided with a temperature sensor 9 corresponding to the position inside the shielding box 4, the upper end of the fixed shell seat 6 is fixedly provided with a prompting lamp 10 corresponding to the outside of the shielding box 4, the prompting lamp 10 emits green light after being electrified, when the temperature sensor 9 detects that the temperature of the plug-in unit is higher than the safe temperature, the light emitting color of the indicator light 10 is changed into red, the same indicator light 10 is arranged on the automobile instrument panel, the prompting lamp 10 is also electrically connected with the temperature sensor 9, and the position where the cable 3 is contacted with the fixed shell seat 6 is wrapped with an insulating layer 11.

Referring to fig. 1 and 2, the outer layer of the shielding box 4 is a protective layer 401, the inner layer of the shielding box 4 is a shielding layer 402, and the shielding layer 401 is made of aluminum alloy and has good shielding performance.

Referring to fig. 1 and 2, the protective layer 401 is made of hard heat-resistant plastic, which does not deform when exposed to heat, and the plastic is an insulating material, which can prevent electric shock when in contact.

Referring to fig. 1 and 3, the position where the cable 3 contacts the shielding box 4 is sleeved with a sealing ring, the sealing ring can not only prevent water and dust from entering the shielding box 4, but also can separate different cables 3 when the waterproof sealing ring 5 fails to enter water, and even if one of the cables 3 is soaked in water, the cable 3 beside the cable can not be influenced.

Referring to fig. 1 and 3, when the tail cover 8 is in a closed state, the locking pin 601 is engaged with the locking hole 801, the lower end surface of the locking pin 601 is an inclined surface, and the upper end surface is a plane, so that the locking pin is not easy to be loosened.

Referring to fig. 1 and 2, the number of the connection terminals 1 is one, two, or three, and the number of the plug connection terminals for the electric vehicle of the present embodiment is three.

The utility model discloses when using, binding post 1 with cooperate by the connecting piece, accomplish the joint through nut and bolt hole 2, shield box 4's up end and the surface laminating by the connecting piece, waterproof sealing ring 5 prevents that the binding face from intaking, 8 blocks of tail-hood are at the lower extreme of fixed shell seat 6, afterbody sealing ring 7 prevents that the lower extreme of fixed shell seat 6 from intaking, after the electric automobile plug connector switch-on, because operating voltage is high up to 400V, cable 3 has the phenomenon of generating heat, temperature sensor 9 is used for detecting the temperature around cable 3, when the temperature is higher than safe temperature, and when will causing the damage to other subassemblies, send early warning signal through warning light 10, on the panel board of car, be connected with the same warning light 10, be used for in the driving process suggestion driver's plug connector temperature's unusual.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a plug connector for electric automobile, includes binding post (1), cable (3) and fixed shell seat (6), its characterized in that: the middle of the wiring terminal (1) is provided with a bolt hole (2), the lower end of the wiring terminal (1) is nested at the upper end of the cable (3), the cable (3) sequentially penetrates through the shielding box (4), the fixed shell seat (6) and the tail cover (8) from top to bottom, the upper end of the fixed shell seat (6) is fixedly provided with the shielding box (4), the upper end of the shielding box (4) is provided with an annular groove, a waterproof sealing ring (5) is embedded inside the annular groove, a clamping pin (601) is fixedly arranged below the front end of the fixed shell seat (6), the position of the lower end of the cable (3) corresponding to the lower end of the fixed shell seat (6) is sleeved with a tail sealing ring (7), the lower end of the cable (3) is slidably provided with the tail cover (8), and the front end of the tail cover (8) is provided with a clamping hole (801, the upper end of fixed shell seat (6) is corresponding to the fixed temperature sensor (9) that is provided with in the inside position department of shielded cell (4), the upper end of fixed shell seat (6) is corresponding to the external fixation of shielded cell (4) is provided with warning light (10), cable (3) with the position department parcel of fixed shell seat (6) contact has insulating layer (11).

2. The connector for electric vehicle according to claim 1, wherein: the outer layer of the shielding box (4) is a protective layer (401), and the inner layer of the shielding box (4) is a shielding layer (402).

3. The connector for electric vehicle according to claim 2, wherein: the protective layer (401) is made of hard heat-resistant plastic.

4. The connector for electric vehicle according to claim 1, wherein: and a sealing ring is sleeved at the position where the cable (3) and the shielding box (4) are contacted.

5. The connector for electric vehicle according to claim 1, wherein: when the tail cover (8) is in a closed state, the clamping pins (601) are mutually clamped with the clamping holes (801).

6. The connector for electric vehicle according to claim 1, wherein: the number of the connecting terminals (1) is one, two or three.

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