CN110635442B

CN110635442B - High-temperature power-off device of high-voltage cable in new energy vehicle

Info

Publication number: CN110635442B
Application number: CN201910834746.5A
Authority: CN
Inventors: 谢忠; 陈绍明; 林卫东
Original assignee: Guangdong Jianbao Cable Co ltd
Current assignee: Guangdong Jianbao Cable Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-11-10
Anticipated expiration: 2039-09-05
Also published as: CN110635442A

Abstract

The invention relates to the field of high-voltage cables, in particular to a high-temperature power-off device of a high-voltage cable in a new energy vehicle, which comprises a placing box, a main body mechanism, a standby mechanism, a supporting mechanism, a fastening mechanism and a heat dissipation mechanism, wherein the main body mechanism is arranged on the placing box; when the high temperature leads to the fuse fusing, connecting circuit between first cable and the second cable is cut off, the connecting circuit of electro-magnet is cut off, then the electro-magnet loses magnetic force, first electrical property piece drops, by first spring pull-back, then the first electrical property piece of first spring tip is contradicted to the electrical property pole, finally make the electrical property pole block fit in first electrical property piece, then electrical property pole and first electrical property piece are with first cable, the fuse, first spring, the electrical property pole, the circuit intercommunication between second electrical property piece and the third cable, thereby can realize the quick reconnection to stand-by circuit, make the quick restart of stand-by circuit, work efficiency has been guaranteed.

Description

High-temperature power-off device of high-voltage cable in new energy vehicle

Technical Field

The invention relates to the field of high-voltage cables, in particular to a high-temperature power-off device of a high-voltage cable in a new energy vehicle.

Background

The high-voltage cable is one of power cables, is a power cable used for transmitting power between 1kv and 1000kv, is mainly applied to power transmission and distribution, and comprises the following components from inside to outside: conductor, insulation, inner sheath, filler (armor), outer insulation. Of course, the armored high-voltage cable is mainly used for being buried in the ground, can resist the compression with high strength on the ground, and can prevent other external force from damaging. At present, high-voltage cables are widely applied to new energy automobiles, and due to the particularity of the automobiles, the high-voltage cables in the new energy automobiles need to be provided with special high-temperature power-off devices.

However, when the existing high-temperature power-off device of the high-voltage cable in the new energy vehicle is used, the high-temperature power-off device can only power off the line in a high-temperature state, but cannot be restarted quickly, and the working efficiency is affected; meanwhile, the automobile can bump very when running, the cable can be driven to be fixed, the cable becomes very soft in a high-temperature state, the inconvenience of fixing the cable is further aggravated, and the safety performance is influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a high-temperature power-off device of a high-voltage cable in a new energy vehicle.

The technical scheme adopted by the invention for solving the technical problems is as follows: including settling box, main part mechanism, standby device, supporting mechanism, fastening device and heat dissipation mechanism for settle other mechanisms the inside of settling the box is equipped with and is used for realizing circuit connection the main part mechanism, the inside of settling the box is located one side of main part mechanism is equipped with and is used for preventing that the outage standby device, one side of settling the box is equipped with and is used for supporting the cable supporting mechanism, be equipped with on settling the lateral wall of box fastening device, the inside of settling the box is equipped with and is used for absorbing the heat dissipation mechanism.

Specifically, the main part mechanism includes first cable, second cable, fuse, first spring, first electrical property piece and electro-magnet, is the rectangle square box-shaped the one end lateral wall of settling the box is link up to have first cable, the other end electric connection of first cable has the fuse, the other end of fuse is connected with first spring, the other end magnetic adsorption of first spring has and is the shape of a hoof first electrical property piece, the other end electric connection of first electrical property piece has the electro-magnet, the other end electric connection of electro-magnet has the second cable, the second cable link up in settle the lateral wall of box.

Specifically, the standby mechanism comprises a third cable, a second electrical block, an electrical rod, an insulating block and a second spring, the third cable is arranged on the side wall of the placement box in a penetrating mode, one end of the third cable, which is located inside the placement box, is electrically connected with the second electrical block, one side of the second electrical block is fixed with the insulating block which is rectangular block-shaped, the other end of the insulating block is fixed with the second spring, the second spring is fixedly installed on the inner wall of the placement box, and the second electrical block deviates from one side of the insulating block and is electrically connected with the electrical rod.

Specifically, the supporting mechanism comprises a connecting rod, a clamping block, clamping grooves, a third spring, a mounting plate and a through hole, the mounting plate in a rectangular plate shape is fixed at the bottom of the side wall of one end of the mounting box, the third spring is respectively mounted at two ends of one side of the top surface of the mounting plate, the clamping block in a cylindrical shape is fixed at the top of the third spring, and the two clamping grooves in a semi-cylindrical shape are respectively arranged at two sides of the top of the clamping block; the side wall of the placement box is provided with a through hole in a circular hole shape at the bottom of the second cable, one end of the clamping block is fixed with an L-shaped rod-shaped connecting rod, and the other end of the connecting rod is magnetically adsorbed at the bottom of the electromagnet.

Specifically, the fastening mechanism comprises a sleeve, a limiting cylinder, a fourth spring and steel balls, wherein two sleeves are respectively fixed on two sides of the side wall of one end of the mounting box, and the two second cables penetrate through the two sleeves; the inner wall of the sleeve is fixedly provided with a plurality of limiting cylinders in an array manner, the inner wall of the sleeve, which is positioned inside the limiting cylinders, is fixedly provided with fourth springs, the other ends of the fourth springs are fixedly provided with spherical steel balls with notches at one ends, and the steel balls are connected to the inner wall of the limiting cylinders in a sliding manner.

Specifically, the heat dissipation mechanism includes heat dissipation chamber and closing cap, the inside of settling the box is equipped with that radial cross-section is "the word form returns" the heat dissipation chamber, the block has on the top lateral wall of settling the box is the cake form the closing cap, the cavity of closing cap bottom communicate in the heat dissipation chamber.

The invention has the beneficial effects that:

(1) according to the high-temperature power-off device for the high-voltage cable in the new energy vehicle, when the fuse is fused due to overhigh temperature, the connecting circuit between the first cable and the second cable is cut off, the connecting circuit of the electromagnet is cut off, the electromagnet loses magnetic force, the first electric block falls off and is pulled back by the first spring, the first electric block at the end part of the first spring is abutted to the electric rod, the electric rod is finally clamped on the first electric block, and the electric rod and the first electric block communicate the circuits among the first cable, the fuse, the first spring, the electric rod, the second electric block and the third cable, so that the standby circuit can be quickly reconnected, the standby circuit is quickly restarted, and the working efficiency is guaranteed.

(2) According to the high-temperature power-off device for the high-voltage cable in the new energy vehicle, when the temperature is too high, the first cable and the second cable can become soft, the connecting rod is separated from the constraint due to the fact that the adsorption force of the electromagnet disappears, the clamping block can move towards the top under the action of the elastic force of the third spring, when the first cable and the second cable are deformed greatly and fall, the two clamping grooves on the clamping block can move towards the top to clamp and support the first cable and the second cable, and therefore the first cable and the second cable are guaranteed to be stable when the temperature is too high; on the other hand, when the vehicle jolts or the cable that the high temperature takes place to slump, a plurality of fourth spring can act on a plurality of steel ball under the elasticity effect, makes a plurality of steel ball can carry out the conflict extrusion of all directions to first cable and second cable to further realization is fixed first cable and second cable, has guaranteed the security of using.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of an overall structure of a high-temperature power-off device for a high-voltage cable in a new energy vehicle according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the connection structure of the main body mechanism and the backup mechanism shown in FIG. 1;

FIG. 3 is a schematic structural view of the fastening mechanism shown in FIG. 1;

FIG. 4 is a schematic view of the structural connection of the electromagnet and the support mechanism shown in FIG. 1;

fig. 5 is an enlarged view of the portion a shown in fig. 1.

In the figure: 1. the device comprises a placement box, 2, a main body mechanism, 21, a first cable, 22, a protection knot, 23, a fuse, 24, a first spring, 25, a first electrical block, 26, an electromagnet, 27, a second cable, 3, a standby mechanism, 31, a third cable, 32, a second electrical block, 33, an electrical rod, 34, an insulating block, 35, a second spring, 4, a supporting mechanism, 41, a connecting rod, 42, a clamping block, 43, a clamping groove, 44, a third spring, 45, a placement plate, 46, a through hole, 5, a fastening mechanism, 51, a sleeve, 52, a limiting cylinder, 53, a fourth spring, 54, a steel ball, 6, a heat dissipation mechanism, 61, a heat dissipation cavity, 62 and a sealing cover.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the high-temperature power-off device for a high-voltage cable in a new energy vehicle according to the present invention includes a placement box 1, a main body mechanism 2, a standby mechanism 3, a supporting mechanism 4, a fastening mechanism 5, and a heat dissipation mechanism 6, wherein the main body mechanism 2 for realizing circuit connection is disposed inside the placement box 1 for placing other mechanisms, the standby mechanism 3 for preventing power-off is disposed inside the placement box 1 and located on one side of the main body mechanism 2, the supporting mechanism 4 for supporting the cable is disposed on one side of the placement box 1, the fastening mechanism 5 is disposed on a side wall of the placement box 1, and the heat dissipation mechanism 6 for absorbing heat is disposed inside the placement box 1.

Specifically, the main body mechanism 2 includes a first cable 21, a second cable 22, a fuse 23, a first spring 24, a first electrical block 25 and an electromagnet 26, the first cable 21 penetrates through a side wall of one end of the rectangular square box-shaped arrangement box 1, the other end of the first cable 21 is electrically connected to the fuse 23, the other end of the fuse 23 is connected to the first spring 24, the first electrical block 25 in a horseshoe shape is magnetically adsorbed to the other end of the first spring 24, the other end of the first electrical block 25 is electrically connected to the electromagnet 26, the other end of the electromagnet 26 is electrically connected to the second cable 22, and the second cable 22 penetrates through the side wall of the arrangement box 1; during the use, through first cable 21, fuse 23, first spring 24, first electrical property piece 25, electro-magnet 26 with electric connection between the second cable 22 to can realize the intercommunication of circuit between first cable 21 and the second cable 22, under being in high temperature state, the temperature of fuse 23 constantly rises, and when fuse 23 reaches certain temperature, will be fused, the cutting off circuit makes and to realize the function to circuit high temperature outage protection.

Specifically, the standby mechanism 3 includes a third cable 31, a second electrical block 32, an electrical rod 33, an insulating block 34 and a second spring 35, the third cable 31 penetrates through a side wall of the placement box 1, one end of the third cable 31 located inside the placement box 1 is electrically connected to the second electrical block 32, the insulating block 34 in a rectangular block shape is fixed to one side of the second electrical block 32, the second spring 35 is fixed to the other end of the insulating block 34, the second spring 35 is fixedly mounted on the inner wall of the placement box 1, and one side of the second electrical block 32 away from the insulating block 34 is electrically connected to the electrical rod 33; during the use, when the fuse 23 fuses because of the too high temperature, the connection circuit between the first cable 21 and the second cable 27 is cut off, the connection circuit of the electromagnet 26 is cut off, the electromagnet 26 loses the magnetic force, the first electrical block 25 falls off and is pulled back by the first spring 24, the first electrical block 25 is abutted to the electrical rod 33, the electrical rod 33 is clamped on the first electrical block 25, and the electrical rod 33 and the first electrical block 25 communicate the first cable 21, the fuse 23, the first spring 24, the electrical rod 33, the second electrical block 32 and the third cable 33, so as to realize the quick reconnection of the standby circuit.

Specifically, the supporting mechanism 4 includes a connecting rod 41, a clamping block 42, a clamping groove 43, a third spring 44, a placing plate 45 and a through hole 46, the placing plate 45 in a rectangular plate shape is fixed at the bottom of the side wall of one end of the placing box 1, two ends of one side of the top surface of the placing plate 45 are respectively provided with one third spring 44, the top of the third spring 44 is fixed with the cylindrical clamping block 42, and two semi-cylindrical clamping grooves 43 are respectively arranged at two sides of the top of the clamping block 42; the through hole 46 in a circular hole shape is formed in the side wall of the placement box 1 and located at the bottom of the second cable 22, the connecting rod 41 in an L-shaped rod shape is fixed at one end of the fixture block 42, and the other end of the connecting rod 41 is magnetically adsorbed to the bottom of the electromagnet 26; when the temperature is too high, the first cable 22 and the second cable 31 become soft, the connecting rod 41 is detached due to the disappearance of the adsorption force of the electromagnet 26, the latch 42 is displaced towards the top under the elastic force of the third spring 44, and when the first cable 22 and the second cable 31 are greatly deformed and fall, the two latch slots 43 on the latch 42 are displaced towards the top to fasten and support the first cable 22 and the second cable 31, so that the first cable 22 and the second cable 31 are fixed at the time of the too high temperature.

Specifically, the fastening mechanism 5 includes a sleeve 51, a limiting cylinder 52, a fourth spring 53 and a steel ball 54, two sides of a side wall of one end of the mounting box 1 are respectively fixed with one of the sleeves 51, and the two second cables 22 penetrate through the two sleeves 51; a plurality of limiting cylinders 52 are fixed on the inner wall of the sleeve 51 in an array manner, the fourth spring 53 is fixed on the inner wall of the sleeve 51 positioned in the limiting cylinders 52, the other end of the fourth spring 53 is fixed with a spherical steel ball 54 with a notch at one end, and the steel ball 54 is slidably connected to the inner wall of the limiting cylinders 52; when the cable is used, when the vehicle bumps or the cable is collapsed due to overhigh temperature, the plurality of fourth springs 53 act on the plurality of steel balls 54 under the action of elastic force, so that the plurality of steel balls 54 can collide and extrude the first cable 22 and the second cable 31 in all directions, and the first cable 22 and the second cable 31 are further fixed.

Specifically, the heat dissipation mechanism 6 comprises a heat dissipation cavity 61 and a sealing cover 62, the heat dissipation cavity 61 with a radial cross section in a shape like a Chinese character 'hui' is arranged inside the placement box 1, the sealing cover 62 in a shape of a circular cake is clamped on the side wall of the top of the placement box 1, and a cavity at the bottom of the sealing cover 62 is communicated with the heat dissipation cavity 61; when the heat dissipation device is used, the sealing cover 62 is opened, and insulating oil is poured into the heat dissipation cavity 61, so that the absorption of the excessive heat of the whole device is completed, and the heat absorption effect of the device is realized.

When the high-temperature fuse is used, firstly, the first cable 21, the fuse 23, the first spring 24, the first electrical block 25, the electromagnet 26 and the second cable 22 are electrically connected, so that the circuit between the first cable 21 and the second cable 22 is communicated, the temperature of the fuse 23 is continuously increased under a high-temperature state, and when the fuse 23 reaches a certain temperature, the fuse is fused, the circuit is cut off, and the function of high-temperature power-off protection of the circuit is realized; when the fuse 23 is fused due to an excessively high temperature, the connection circuit between the first cable 21 and the second cable 27 is cut off, the connection circuit of the electromagnet 26 is cut off, the electromagnet 26 loses magnetic force, the first electrical block 25 falls off and is pulled back by the first spring 24, the first electrical block 25 abuts against the electrical rod 33, the electrical rod 33 is clamped with the first electrical block 25, and the electrical rod 33 and the first electrical block 25 communicate the circuits among the first cable 21, the fuse 23, the first spring 24, the electrical rod 33, the second electrical block 32 and the third cable 33, so that the standby circuit can be quickly reconnected; meanwhile, when the temperature is too high, the first cable 22 and the second cable 31 become soft, the link 41 is released from the constraint due to the disappearance of the attraction force of the electromagnet 26, the latch 42 is displaced toward the top position by the elastic force of the third spring 44, when the first cable 22 and the second cable 31 are greatly deformed and fall, the two slots 43 on the latch 42 will be displaced towards the top to engage and support the first cable 22 and the second cable 31, so as to ensure the fixing of the first cable 22 and the second cable 31 in the event of excessive temperatures, and, on the other hand, when the vehicle bumps or the cable collapses due to overhigh temperature, the plurality of fourth springs 53 act on the plurality of steel balls 54 under the action of elastic force, therefore, the steel balls 54 can perform interference extrusion on the first cable 22 and the second cable 31 in all directions, so that the first cable 22 and the second cable 31 are further fixed; meanwhile, when the temperature is too high, the sealing cover 62 can be opened, and insulating oil is poured into the heat dissipation cavity 61, so that the absorption of the redundant heat of the whole device is completed, the heat absorption effect on the device is realized, and the whole using process of the device is finally completed.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A high-temperature power-off device of a high-voltage cable in a new energy vehicle comprises a placement box (1), a main body mechanism (2), a standby mechanism (3), a supporting mechanism (4), a fastening mechanism (5) and a heat dissipation mechanism (6), wherein the main body mechanism (2) for realizing circuit connection is arranged in the placement box (1) for placing other mechanisms, the standby mechanism (3) for preventing power failure is arranged on one side of the main body mechanism (2) in the placement box (1), the supporting mechanism (4) for supporting the cable is arranged on one side of the placement box (1), the fastening mechanism (5) is arranged on the side wall of the placement box (1), the heat dissipation mechanism (6) for absorbing heat is arranged in the placement box (1),

the main body mechanism (2) comprises a first cable (21), a second cable (22), a fuse (23), a first spring (24), a first electric block (25) and an electromagnet (26), the first cable (21) penetrates through the side wall of one end of the rectangular square box-shaped arrangement box (1), the other end of the first cable (21) is electrically connected with the fuse (23), the other end of the fuse (23) is connected with the first spring (24), the other end of the first spring (24) is magnetically adsorbed with the first electric block (25) in horseshoe shape, the other end of the first electric block (25) is electrically connected with the electromagnet (26), the other end of the electromagnet (26) is electrically connected with the second cable (22), the second cable (22) penetrates through the side wall of the mounting box (1).

2. The high-temperature power-off device of the high-voltage cable in the new energy vehicle as claimed in claim 1, characterized in that: spare gear (3) include third cable (31), second electrical property piece (32), electric property pole (33), insulating block (34) and second spring (35), it has to link up on the lateral wall of arrangement box (1) third cable (31), third cable (31) are located the inside one end electric connection of arrangement box (1) has second electrical property piece (32), one side of second electrical property piece (32) is fixed with and is rectangular block-shaped insulating block (34), the other end of insulating block (34) is fixed with second spring (35), second spring (35) fixed mounting in on the inner wall of arrangement box (1), second electrical property piece (32) deviate from one side electric connection of insulating block (34) has electric property pole (33).

3. The high-temperature power-off device of the high-voltage cable in the new energy vehicle as claimed in claim 1, characterized in that: the supporting mechanism (4) comprises a connecting rod (41), a clamping block (42), a clamping groove (43), a third spring (44), a placing plate (45) and a through hole (46), the placing plate (45) in a rectangular plate shape is fixed at the bottom of the side wall of one end of the placing box (1), the third spring (44) is respectively installed at two ends of one side of the top surface of the placing plate (45), the cylindrical clamping block (42) is fixed at the top of the third spring (44), and two semi-cylindrical clamping grooves (43) are respectively arranged at two sides of the top of the clamping block (42); the through hole (46) which is in a circular hole shape is formed in the side wall of the placement box (1) and located at the bottom of the second cable (22), the connecting rod (41) which is in an L-shaped rod shape is fixed at one end of the clamping block (42), and the other end of the connecting rod (41) is magnetically adsorbed to the bottom of the electromagnet (26).

4. The high-temperature power-off device of the high-voltage cable in the new energy vehicle as claimed in claim 1, characterized in that: the fastening mechanism (5) comprises sleeves (51), a limiting cylinder (52), a fourth spring (53) and steel balls (54), the sleeves (51) are respectively fixed on two sides of the side wall of one end of the mounting box (1), and the two second cables (22) penetrate through the two sleeves (51); the inner wall of the sleeve (51) is fixedly provided with a plurality of limiting cylinders (52) in an array mode, the inner wall of the sleeve (51) positioned in the limiting cylinders (52) is fixedly provided with fourth springs (53), the other ends of the fourth springs (53) are fixedly provided with spherical steel balls (54) with notches at one ends, and the steel balls (54) are slidably connected to the inner wall of the limiting cylinders (52).

5. The high-temperature power-off device of the high-voltage cable in the new energy vehicle as claimed in claim 1, characterized in that: heat dissipation mechanism (6) are including heat dissipation chamber (61) and closing cap (62), the inside of settling box (1) is equipped with that radial cross-section is "the word form returns heat dissipation chamber (61), the block has on the top lateral wall of settling box (1) is the cake form closing cap (62), the cavity of closing cap (62) bottom communicate in heat dissipation chamber (61).