CN114516271B

CN114516271B - High-voltage control box of new energy automobile power electronic converter

Info

Publication number: CN114516271B
Application number: CN202210163865.4A
Authority: CN
Inventors: 李萍; 高晶晶; 李芮莹; 吕海涛; 李兆宇; 董柏秀; 穆嘉禄
Original assignee: Heilongjiang Institute of Technology
Current assignee: Heilongjiang Institute of Technology
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2023-11-28
Anticipated expiration: 2042-02-22
Also published as: CN114516271A

Abstract

The invention relates to the technical field of new energy automobile accessories, and discloses a high-voltage control box of a new energy automobile power electronic converter, which comprises a base and an outer shell arranged at the upper end of the base, wherein a built-in element is fixedly arranged on the base, one side of the outer shell is fixedly provided with a fixing mechanism, the fixing mechanism comprises an L-shaped clamping plate fixedly arranged at one end of the outer shell and a connecting plate fixedly arranged at one end of the base, threaded holes are formed in the L-shaped clamping plate and the connecting plate, a bolt is connected in the threaded holes in a threaded manner, a rubber sleeve is fixedly arranged on the connecting plate, the rubber sleeve is communicated with the threaded holes, and an expansion opening is formed in the circumferential direction of the surface of the rubber sleeve; the inner wall of the rubber sleeve is attached to the bolt, friction force is increased, up-and-down movement of the bolt is limited, the bolt is prevented from being separated from the threaded hole due to up-and-down vibration, the anti-skid wire effect is good, and the fastening effect is good.

Description

High-voltage control box of new energy automobile power electronic converter

Technical Field

The invention relates to the technical field of new energy automobile accessories, in particular to a high-voltage control box of a new energy automobile power electronic converter.

Background

The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel automobile-mounted power device) and integrates the advanced technology in the aspects of power control and driving of the automobile, and the formed technical principle is advanced, and the automobile has a new technology and a new structure. The voltage of a power battery of the new energy automobile is 200-400V, and if the power battery is directly connected with a power battery, a power battery wire harness is disordered, so that the cost is increased, the whole automobile space is occupied, and the potential safety hazard of the whole automobile is increased, so that the new energy automobile needs to be additionally provided with a high-voltage control box to distribute high voltage to the power battery.

The utility model provides a new energy automobile power electronic converter high pressure control box, including box and case lid, the box top is fixed with the case lid, the box both sides symmetry is fixed with the fixed block, the through-hole has been seted up at the fixed block middle part, the through-hole inner wall grafting has the bolt, fixed block top symmetry is fixed with the riser, and pole setting and box fixed connection, install the locking mechanism that prevents bolt looseness between two riser, although can solve the problem that prevents bolt looseness for this patent, under continuous vibrations, the bolt can appear vibrations from top to bottom, the screw hole easily slips, makes the bolt drop from the screw directly, influences the fixed of device, and the result of use is bad, and when the device is in use, inside easily produces higher heat, and then influences the use of this device; therefore, the existing requirements are not met, and a high-voltage control box of a power electronic converter of a new energy automobile is provided.

Disclosure of Invention

The invention provides a high-voltage control box of a power electronic converter of a new energy automobile, which has the beneficial effects of good anti-slip wire effect and good fastening effect and solves the problems that the screw hole is easy to slip wire, so that the screw is directly fallen from the screw hole to influence the fixation of a device under the continuous vibration in the prior art.

The invention provides the following technical scheme: the utility model provides a new energy automobile power electronic converter high pressure control box, includes the base and sets up the shell body in the base upper end, fixed mounting has built-in component on the base, fixed mounting has fixed establishment in shell body one side, fixed establishment includes the L shape joint board of fixed mounting in shell body one end and the connecting plate of fixed mounting in base one end, threaded hole has all been seted up on L shape joint board and the connecting plate, threaded hole threaded connection has the bolt, still fixed mounting has the rubber sleeve on the connecting plate, rubber sleeve and threaded hole intercommunication each other, expansion opening has been seted up to rubber sleeve surface circumference, fixed establishment is provided with four groups, four groups two are corresponding to be installed in the base both sides; the bolts are sequentially inserted into the threaded holes and the rubber sleeve from top to bottom, so that the bolts are conveniently fastened with the base.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the outer shell is provided with a through hole, the side wall of the outer shell is provided with an avoidance groove, the inner wall of the outer shell is fixedly provided with a positioning column, and the side wall of the outer shell is also provided with a heat dissipation hole adjacent to the avoidance groove; through the installation louvre, be convenient for dispel the heat to built-in component.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the base is provided with a positioning hole, the positioning hole is positioned in the outer shell, and the positioning hole is mutually matched with the positioning column; the locating column is inserted into the locating hole, so that the threaded holes on the L-shaped clamping plate and the connecting plate can be mutually aligned.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the switch mechanism comprises a switch piece connected with the avoidance groove in a penetrating way and a first contact block fixedly arranged at one end of the switch piece, the central part of the switch piece is rotatably arranged on the side wall of the built-in element, an extension rod is fixedly arranged at one end, far away from the switch piece, of the first contact block, a second contact block is arranged at the lower end of the first contact block, and the second contact block is fixedly arranged on the side wall of the built-in element; when the first contact block contacts the second contact block, the circuit within the built-in element is completed.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the arc extinguishing mechanism comprises a gas storage box body fixedly arranged at the upper end of the base and a communicating pipe communicated with one side of the gas storage box body, a telescopic push rod is slidably arranged on the communicating pipe, a top plate is fixedly arranged on the telescopic push rod, and the top plate corresponds to the position of the extension rod; the telescopic push rod and the top plate move upwards, and the first contact block and the second contact block can be immediately separated, so that automatic power-off is facilitated.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the side wall of the telescopic push rod is fixedly provided with a vertical tooth, a gear is arranged on the vertical tooth in a meshed manner, a central shaft is inserted into the central part of the gear, one end of the central shaft, which is far away from the gear, is fixedly provided with a fan, and a fixing piece fixedly connected with the outer wall of the communicating pipe is sleeved on the central shaft; the fan can accelerate air circulation after rotating, so that the rapid heat dissipation is convenient for the high-temperature environment.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the center shaft, the fan and the fixing piece are respectively provided with two groups, and are arranged at two ends of the gear in a mirror image mode; and the heat dissipation effect is convenient to increase.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the lower end of the telescopic push rod is fixedly provided with a first piston, the first piston is slidably arranged in the communicating pipe, the lower end of the first piston is fixedly provided with a first elastic piece, and the first elastic piece is fixedly connected with the bottom wall in the communicating pipe; by installing the first piston, the communicating pipe is convenient to seal.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the air storage box body is penetrated with an air pipe, the air pipe is penetrated and connected with the through hole, the upper end of the air pipe is fixedly provided with an air bag, and the lower end of the air pipe extends to the communicating pipe; when there is gas in the gas storage tank, the air bag is in a bulge state, so that whether the gas storage tank leaks gas or not can be judged intuitively.

As an alternative scheme of the high-voltage control box of the power electronic converter of the new energy automobile, the invention comprises the following steps: the second piston is fixedly arranged on the air bag and is slidably arranged in the air storage box body, a second elastic piece is fixedly arranged on the second piston, and one end, far away from the second piston, of the second elastic piece is fixedly connected with the top wall in the air storage box body, so that air in the air storage box body is conveniently compressed.

The invention has the following beneficial effects:

1. this new energy automobile power electronic converter high pressure control case, the reference column alternates to the locating hole in, can ensure that screw hole on L shape joint board and the connecting plate can counterpoint each other, alternates the bolt from top to bottom in proper order to screw hole and the rubber sleeve in, is convenient for fasten shell body and base, rubber sleeve inner wall and bolt laminating have increased frictional force, have restricted the up-and-down motion of bolt, avoid the bolt to break away from the screw hole because of vibrations from top to bottom, and the antiskid silk is effectual, and fastening effect is good.

2. This new energy automobile power electronic converter high pressure control case, first contact piece external power source, when first contact piece and second contact piece contact, the circuit in the built-in component is put through, if the circuit appears the circumstances of high temperature when putting through, the phenomenon that the gas in the gas storage box can take place to expand when being heated, the gas after the expansion can drive flexible push rod and roof upward motion, can be immediately with first contact piece and second contact piece separation, the automatic power-off of being convenient for prevents that inside temperature from being too high and influencing the operation of built-in component.

3. This new energy automobile power electronic converter high pressure control case, during high temperature, last going on the flexible push rod of upward movement and can drive vertical tooth upward movement to make the gear rotatory, the gear drives axis and fan rotation, the both ends of gear all are provided with the fan, accelerate the circulation of air, be convenient for carry out quick heat dissipation to high temperature environment, excellent in use effect.

4. This new energy automobile power electronic converter high pressure control case, gas are located between first piston and the second piston, and gas is compressed by second elastic component and second piston for high temperature gas is to first piston department displacement, and the gas after the inflation can drive first piston and promote flexible push rod upward movement in communicating pipe, has increased gaseous leakproofness, prevents high temperature gas leakage.

5. This new energy automobile power electronic converter high pressure control case, upwards promote in-process, first elastic component is stretched, consequently after gaseous cooling, first elastic component can drive first piston and flexible push rod and restore the normal position downwards, excellent in use effect, the reuse of being convenient for.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is an exploded view of the overall structure of the present invention.

Fig. 3 is a partial cross-sectional view of the outer housing of the present invention.

Fig. 4 is an enlarged view of fig. 3 a in accordance with the present invention.

Fig. 5 is a schematic structural view of an arc extinguishing mechanism according to the present invention.

Fig. 6 is a sectional view of the inside of the gas storage tank of the present invention.

In the figure: 1. a base; 11. positioning holes; 12. a built-in element; 2. an outer housing; 21. a through hole; 22. an avoidance groove; 23. positioning columns; 3. a heat radiation hole; 4. a fixing mechanism; 41. an L-shaped clamping plate; 42. a threaded hole; 43. a bolt; 44. a connecting plate; 45. a rubber sleeve; 46. an expansion opening; 5. a switching mechanism; 51. a switch member; 52. a first contact block; 53. an extension rod; 54. a second contact block; 6. an arc extinguishing mechanism; 61. a gas storage tank body; 611. an air pipe; 612. an air bag; 613. a second piston; 614. a second elastic member; 62. a communicating pipe; 63. a telescopic push rod; 631. a first piston; 632. a first elastic member; 64. a top plate; 65. vertical teeth; 66. a gear; 67. a center shaft; 68. a fan; 69. and a fixing piece.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

The embodiment aims to facilitate solving the problem how to ensure that the bolt 43 does not slide under vibration conditions, please refer to fig. 1-2, a high-voltage control box for a power electronic converter of a new energy automobile comprises a base 1 and an outer shell 2 arranged at the upper end of the base 1, wherein a built-in element 12 is fixedly arranged on the base 1, a fixing mechanism 4 is fixedly arranged on one side of the outer shell 2, the fixing mechanism 4 comprises an L-shaped clamping plate 41 fixedly arranged at one end of the outer shell 2 and a connecting plate 44 fixedly arranged at one end of the base 1, threaded holes 42 are formed in the L-shaped clamping plate 41 and the connecting plate 44, the bolt 43 is connected with the threads in the threaded holes 42, a rubber sleeve 45 is fixedly arranged on the connecting plate 44, the rubber sleeve 45 is communicated with the threaded holes 42, an expansion opening 46 is formed in the circumferential direction of the surface of the rubber sleeve 45, four groups are arranged on the fixing mechanism 4, and the four groups are correspondingly arranged on two sides of the base 1.

The through hole 21 is formed in the outer shell 2, the avoidance groove 22 is formed in the side wall of the outer shell 2, the positioning column 23 is fixedly mounted on the inner wall of the outer shell 2, and the radiating hole 3 adjacent to the avoidance groove 22 is formed in the side wall of the outer shell 2.

The base 1 is provided with a positioning hole 11, the positioning hole 11 is positioned in the outer shell 2, and the positioning hole 11 is mutually matched with the positioning column 23.

The outer shell 2 is placed at the upper end of the base 1, the positioning column 23 is inserted into the positioning hole 11, the outer shell 2 is conveniently guaranteed to be accurately located at the upper end of the base 1, the threaded holes 42 on the L-shaped clamping plate 41 and the connecting plate 44 can be mutually aligned, the bolts 43 are sequentially inserted into the threaded holes 42 and the rubber sleeve 45 from top to bottom and are fastened with the base 1 in a rotating mode, the L-shaped clamping plate 41 after fastening is fastened and attached to the upper end of the connecting plate 44, the rubber sleeve 45 is in an expansion state, the expansion opening 46 is enlarged, the inner wall of the rubber sleeve 45 is attached to the bolts 43, friction force is increased, up-and-down movement of the bolts 43 is limited, the bolts 43 are prevented from being separated from the threaded holes 42 due to up-and-down vibration, the anti-skid wire effect is good, and the fastening effect is good.

Through installing louvre 3, be convenient for dispel the heat to built-in component 12, avoid inside high temperature and damage, the protection effect is good.

Example 2

The present embodiment is intended to facilitate solving the problem of how to automatically open the built-in element 12 under the condition of high temperature, and is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 2-5, the outer wall surface of the built-in element 12 is provided with a switch mechanism 5, the switch mechanism 5 comprises a switch member 51 connected with the avoidance slot 22 in a penetrating manner and a first contact block 52 fixedly installed at one end of the switch member 51, a central portion of the switch member 51 is rotatably installed on the side wall of the built-in element 12, an extension rod 53 is fixedly installed at one end of the first contact block 52 far from the switch member 51, a second contact block 54 is provided at the lower end of the first contact block 52, and the second contact block 54 is fixedly installed on the side wall of the built-in element 12.

The arc extinguishing mechanism 6 comprises a gas storage box body 61 fixedly arranged at the upper end of the base 1 and a communicating pipe 62 communicated with one side of the gas storage box body 61, a telescopic push rod 63 is slidably arranged on the communicating pipe 62, a top plate 64 is fixedly arranged on the telescopic push rod 63, and the top plate 64 corresponds to the position of the extension rod 53.

The operator pulls the switch member 51 upward, the switch member 51 rotates about its own center as a center of a circle, and drives the first contact block 52 to move toward the second contact block 54, the first contact block 52 is externally connected with a power source, and the second contact block 54 is electrically connected with the built-in component 12, so that when the first contact block 52 contacts with the second contact block 54, a circuit in the built-in component 12 is completed.

If the circuit is in a high temperature condition during connection, heat of the built-in element 12 is transmitted to gas in the gas storage box 61, the gas in the gas storage box 61 is heated to expand, the expanded gas enters the communicating pipe 62 and drives the telescopic push rod 63 to move upwards, and the top plate 64 at the upper end of the telescopic push rod 63 can immediately separate the first contact block 52 from the second contact block 54, so that automatic power-off is facilitated, and the operation of the built-in element 12 is prevented from being influenced by the fact that the internal temperature is too high.

When the circuit is required to be disconnected, the switch piece 51 is pushed downwards, and the first contact block 52 is separated from the second contact block 54, so that the operation of the device is facilitated.

After the circuit is disconnected, air still exists in the gap between the first contact block 52 and the second contact block 54 to be conducted so as to generate an electric arc, the temperature of the built-in element 12 is continuously increased, the air in the air storage box 61 is matched with the heated expansion to accelerate the upward movement speed of the telescopic push rod 63, the distance between the first contact block 52 and the second contact block 54 is further increased, arc extinguishing work is facilitated, the outage efficiency is accelerated, and the protection effect is good.

Example 3

The present embodiment is intended to promote solving the problem of how to quickly dissipate heat in a high-temperature environment, and is an improvement made on the basis of embodiment 2, specifically, please refer to fig. 5, a vertical tooth 65 is fixedly mounted on a side wall of a telescopic push rod 63, a gear 66 is mounted on the vertical tooth 65 in a meshed manner, a center shaft 67 is inserted in a center portion of the gear 66, a fan 68 is fixedly mounted at one end, far from the gear 66, of the center shaft 67, and a fixing piece 69 fixedly connected with an outer wall of a communicating pipe 62 is sleeved on the center shaft 67.

The center shaft 67, the fan 68 and the fixing member 69 are provided with two sets, respectively, and are mirror-image-mounted at both ends of the gear 66.

Under the fixed action of the fixing piece 69, the positions of the gear 66 and the center shaft 67 are not changed, and at high temperature, the telescopic push rod 63 which continuously moves upwards can drive the vertical teeth 65 to move upwards, so that the gear 66 rotates, the gear 66 drives the center shaft 67 and the fan 68 to rotate, the fans 68 are arranged at two ends of the gear 66, air circulation is quickened, rapid heat dissipation is conveniently carried out on a high-temperature environment, and the use effect is good.

Example 4

The present embodiment is intended to facilitate solving the problem of judging whether to leak air in the air storage tank 61, and is an improvement made on the basis of embodiment 2, specifically, referring to fig. 4-6, a first piston 631 is fixedly mounted at the lower end of the telescopic push rod 63, the first piston 631 is slidably mounted in the communicating tube 62, a first elastic member 632 is fixedly mounted at the lower end of the first piston 631, and the first elastic member 632 is fixedly connected with the bottom wall inside the communicating tube 62.

The air storage tank 61 is inserted with an air pipe 611, the air pipe 611 is connected with the through hole 21 in an inserted way, the upper end of the air pipe 611 is fixedly provided with an air bag 612, and the lower end of the air pipe 611 extends to the communicating pipe 62.

The air bag 612 is fixedly provided with a second piston 613, the second piston 613 is slidably arranged in the air storage box 61, the second piston 613 is fixedly provided with a second elastic piece 614, and one end of the second elastic piece 614, which is far away from the second piston 613, is fixedly connected with the top wall inside the air storage box 61.

The elasticity of the second elastic element 614 is smaller than that of the first elastic element 632, and the second elastic element 614 can drive the second piston 613 to move downwards to compress air conveniently, so that high-temperature gas is discharged to the first piston 631, and the expanded gas can drive the first piston 631 to push the telescopic push rod 63 to move upwards in the communicating pipe 62, so that the tightness of the gas is improved, and the leakage of the high-temperature gas is prevented.

In the upward pushing process, the first elastic piece 632 is stretched, so that after the gas is cooled, the first elastic piece 632 can drive the first piston 631 and the telescopic push rod 63 to restore to the original position downwards, the use effect is good, and the repeated use is convenient.

The gas in the gas storage tank 61 can enter the gas bag 612 through the gas pipe 611, the gas pipe 611 is inserted in the through hole 21, the gas bag 612 is exposed at the upper end of the outer shell 2, and when the gas storage tank is inflated, if the gas in the gas bag 612 runs off, the gas bag 612 can be shrunken, so that whether the gas storage tank 61 leaks gas or not can be intuitively judged.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. The utility model provides a new energy automobile power electronic converter high pressure control case, includes base (1) and sets up shell body (2) in base (1) upper end, fixed mounting has built-in component (12), its characterized in that on base (1): the novel plastic rubber fixing device is characterized in that a fixing mechanism (4) is fixedly arranged on one side of the outer shell body (2), the fixing mechanism (4) comprises an L-shaped clamping plate (41) fixedly arranged at one end of the outer shell body (2) and a connecting plate (44) fixedly arranged at one end of the base (1), threaded holes (42) are formed in the L-shaped clamping plate (41) and the connecting plate (44), bolts (43) are connected with inner threads of the threaded holes (42), a rubber sleeve (45) is fixedly arranged on the connecting plate (44), the rubber sleeve (45) is communicated with the threaded holes (42), expansion openings (46) are formed in the circumferential direction of the surface of the rubber sleeve (45), four groups of the fixing mechanism (4) are arranged, and the four groups of the fixing mechanism are correspondingly arranged on two sides of the base (1); a positioning hole (11) is formed in the base (1), the positioning hole (11) is positioned in the outer shell (2), and the positioning hole (11) and the positioning column (23) are mutually matched; the switch mechanism (5) is arranged on the outer wall surface of the built-in element (12), the switch mechanism (5) comprises a switch piece (51) which is connected with the avoidance groove (22) in a penetrating way and a first contact block (52) which is fixedly arranged at one end of the switch piece (51), the central part of the switch piece (51) is rotatably arranged on the side wall of the built-in element (12), an extension rod (53) is fixedly arranged at one end, far away from the switch piece (51), of the first contact block (52), a second contact block (54) is arranged at the lower end of the first contact block (52), and the second contact block (54) is fixedly arranged on the side wall of the built-in element (12); the arc extinguishing mechanism (6) comprises a gas storage box body (61) fixedly arranged at the upper end of the base (1) and a communicating pipe (62) communicated with one side of the gas storage box body (61), a telescopic push rod (63) is slidably arranged on the communicating pipe (62), a top plate (64) is fixedly arranged on the telescopic push rod (63), and the top plate (64) corresponds to the position of the extension rod (53); the side wall of the telescopic push rod (63) is fixedly provided with a vertical tooth (65), the vertical tooth (65) is provided with a gear (66) in a meshed manner, the center part of the gear (66) is penetrated with a center shaft (67), one end, far away from the gear (66), of the center shaft (67) is fixedly provided with a fan (68), and the center shaft (67) is sleeved with a fixing piece (69) fixedly connected with the outer wall of the communicating pipe (62); the center shaft (67), the fan (68) and the fixing piece (69) are respectively provided with two groups, and are arranged at two ends of the gear (66) in a mirror image mode; the lower end of the telescopic push rod (63) is fixedly provided with a first piston (631), the first piston (631) is slidably arranged inside the communicating pipe (62), the lower end of the first piston (631) is fixedly provided with a first elastic piece (632), and the first elastic piece (632) is fixedly connected with the bottom wall inside the communicating pipe (62); an air pipe (611) is inserted in the air storage box body (61), the air pipe (611) is connected with the through hole (21) in an inserted mode, an air bag (612) is fixedly arranged at the upper end of the air pipe (611), and the lower end of the air pipe (611) extends to the communicating pipe (62); the air bag (612) is fixedly provided with a second piston (613), the second piston (613) is slidably arranged in the air storage box body (61), the second piston (613) is fixedly provided with a second elastic piece (614), and one end, far away from the second piston (613), of the second elastic piece (614) is fixedly connected with the inner top wall of the air storage box body (61).

2. The high-voltage control box of the power electronic converter of the new energy automobile according to claim 1, wherein the high-voltage control box is characterized in that: the novel heat dissipation device is characterized in that a through hole (21) is formed in the outer shell (2), an avoidance groove (22) is formed in the side wall of the outer shell (2), a positioning column (23) is fixedly mounted on the inner wall of the outer shell (2), and a heat dissipation hole (3) adjacent to the avoidance groove (22) is formed in the side wall of the outer shell (2).