CN117279340A

CN117279340A - Power supply converter

Info

Publication number: CN117279340A
Application number: CN202311475441.2A
Authority: CN
Inventors: 徐建生; 李炳才
Original assignee: Shenzhen Symark Power Technology Co ltd
Current assignee: Shenzhen Symark Power Technology Co ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2023-12-22

Abstract

The invention discloses a power converter, which comprises a chassis, a heat radiation fan and a circuit device, wherein two heat conduction plates are arranged in the chassis, the two heat conduction plates divide the inner cavity of the chassis into a heat radiation cavity and two installation cavities, the heat radiation cavity is positioned between the two installation cavities, a heat radiation air duct is formed in the heat radiation cavity, an air inlet and an air outlet are arranged at two opposite sides of the heat radiation cavity, and the air inlet and the departure opening are positioned at two ends of the heat radiation channel; the heat radiation fan is arranged in the heat radiation air duct and is used for driving air flow to enter the heat radiation air duct from the air inlet and then to be discharged from the air outlet; the circuit device comprises two circuit components, wherein one circuit component is arranged in one mounting cavity, and the other circuit component is arranged in the other mounting cavity. The power converter of the technical scheme of the invention can improve the heat dissipation effect.

Description

Power supply converter

Technical Field

The invention relates to the technical field of power converters, in particular to a power converter.

Background

A power converter is a power circuit that converts an input signal of one power source into an output signal of another power source, often used to boost the power of the power source, thereby achieving different voltages and currents. When the power converter is used, larger heat can be generated, and a heat radiating device is arranged at the top or bottom of the chassis to radiate the chassis, but the heat radiating device arranged at the bottom or top is difficult to effectively radiate the interior of the chassis, so that the heat radiating effect is poor, the internal temperature of the power converter is higher, the electronic components cannot work normally, and the service life of the electronic components is influenced.

Disclosure of Invention

The invention mainly aims to provide a power converter, which aims to improve the heat dissipation effect of the power converter.

In order to achieve the above object, the present invention provides a power converter, comprising:

the heat-conducting plate divides the inner cavity of the case into a heat-radiating cavity and two mounting cavities, the heat-radiating cavity is positioned between the two mounting cavities, a heat-radiating air channel is formed in the heat-radiating cavity, an air inlet and an air outlet are formed in two opposite sides of the heat-radiating cavity, and the air inlet and the departure opening are positioned at two ends of the heat-radiating channel;

the heat dissipation fan is arranged in the heat dissipation air duct and is used for driving air flow to enter the heat dissipation air duct from the air inlet and then to be discharged from the air outlet; and

the circuit device comprises two circuit components, wherein one circuit component is arranged in one mounting cavity, and the other circuit component is arranged in the other mounting cavity.

Optionally, at least one heat conducting plate is located one side of heat dissipation chamber is equipped with a plurality of fin, and a plurality of the fin all extends to the heat dissipation wind channel, and all follows the length direction in heat dissipation wind channel extends, and adjacent two form the heat dissipation clearance between the fin.

Optionally, at least one side of the heat conducting plate away from the heat dissipation cavity is provided with a mounting groove, and the circuit assembly comprises a magnetic core component, and the magnetic core component is mounted in the mounting groove.

Optionally, a side of the heat conducting plate, which is away from the heat dissipation cavity, is recessed to form the mounting groove, and a heat dissipation convex part is formed on a side of the heat dissipation cavity in a rising mode.

Optionally, at least one of the heat conducting plates is provided with the mounting groove and the cooling fin, and at least part of the cooling fin is correspondingly arranged at the part of the heat conducting plate provided with the mounting groove.

Optionally, the power converter further includes a wind guiding component, the wind guiding component includes a plurality of wind guiding pieces, passes through in the heat dissipation wind channel of heat dissipation convex part and be in the relative both sides of heat dissipation convex part all are equipped with the wind guiding piece, the wind guiding piece with the heat conduction board the equal interval of heat dissipation convex part sets up, in order to wind guiding piece with between the heat conduction board and wind guiding piece with form ventilation runner between the heat dissipation convex part, wind guiding piece with clearance between the heat conduction board is greater than the protruding height of heat dissipation convex part.

Optionally, the wind guiding assembly further comprises a wind shielding cover plate, the wind shielding cover plate covers the radiating fins and the radiating convex parts, and the wind guiding piece is fixed on the wind shielding cover plate; and/or the number of the groups of groups,

The wind guide piece is provided with a windward section and a leeward section, the windward section and the leeward section are obliquely arranged relative to the heat conducting plate, the distance between the windward section and the heat conducting plate is gradually reduced in the airflow flowing direction, and the distance between the leeward section and the heat conducting plate is gradually increased in the airflow flowing direction.

Optionally, the power converter further includes a base and a locking mechanism, the base is provided with a placement position and a limiting structure, the placement position is provided with a disassembly and assembly side, the chassis is detachably mounted on the placement position through the disassembly and assembly side and is in limiting fit with the limiting structure, a first limiting part is arranged on a part of the chassis, which is located on the disassembly and assembly side, the locking mechanism includes a connecting rod and a limiting cap, the connecting rod is arranged on the disassembly and assembly side and extends in a direction away from the placement position, and the limiting cap is adjustably sleeved on the connecting rod along the length direction of the connecting rod; the spacing cap orientation one side of placing the position is equipped with the spacing portion of second, works as spacing cap edge the connecting rod orientation place the position place the orientation remove to the locking position, first spacing portion with spacing cooperation of spacing portion of second is used for the restriction the organism passes through dismouting side orientation place the position external motion.

Optionally, the limit cap includes the cap body, swivel nut and stop collar, the swivel nut is equipped with the screw hole, the cap body is followed the axial direction of swivel nut movably overlaps to be located outside the swivel nut, the cap body with be equipped with first anti-rotation structure between the swivel nut, be used for limiting the cap body is relative the swivel nut rotates, the stop collar is followed the length direction movable cover of connecting rod locates outside the connecting rod, and be located the cap body with between the base, the stop collar with be equipped with the second anti-rotation structure between the connecting rod, the stop collar with be equipped with the third anti-rotation structure between the cap body.

Optionally, the limit cap further comprises an elastic piece, wherein the elastic piece is arranged between the cap body and the screw sleeve and has elastic deformation for driving the cap body to move towards the direction of the limit sleeve relative to the screw sleeve; and/or the number of the groups of groups,

the third rotation preventing structure comprises a plurality of first clamping teeth arranged on the end face of the limiting sleeve and a plurality of second teeth arranged on the end face of the cap body, wherein the first clamping teeth and the second clamping teeth are distributed at intervals along the circumferential direction of the limiting cap, and any one of the first clamping teeth can be inserted between two adjacent second clamping teeth; and/or the number of the groups of groups,

The limiting sleeve is provided with the limiting groove, the limiting groove is annular and extends along the circumferential direction of the limiting sleeve, the second limiting part is arranged in a protruding mode compared with the outer surface of the machine body, and when the limiting cap moves to the locking position, the second limiting part is clamped into the limiting groove; and/or the number of the groups of groups,

one end of the connecting rod is hinged to the base and positioned at the lower side of the disassembly side, and the rotation axis of the connecting rod extends along the length direction of the disassembly side; and/or the number of the groups of groups,

the limiting structure comprises a first limiting plate, wherein the first limiting plate and the disassembly and assembly sides are respectively arranged on two opposite sides of the base, a plug-in column is arranged on one side of the first limiting plate, which faces the disassembly and assembly sides, a plug-in hole is formed in the outer side surface of the machine body, and the plug-in column is inserted into the plug-in hole when the machine body is placed in the placement position through the disassembly and assembly sides.

According to the power supply converter, two heat conducting plates are arranged in a chassis, the interior of the chassis is divided into two mounting cavities and a heat dissipation cavity between the two mounting cavities by the two heat conducting plates, the heat dissipation cavity forms a heat dissipation air duct, an air inlet and an air outlet are formed in the heat dissipation air duct, the air inlet and the air outlet are formed in the two ends of the heat dissipation air duct, a heat dissipation fan for driving air flow to enter the heat dissipation air duct from the air inlet and then to be discharged from the air outlet is arranged in the heat dissipation air duct, and the circuit device is provided with two circuit components which are respectively mounted in the two mounting cavities. So, when the power converter is in the in-process of using, the heat that the circuit subassembly of every installation intracavity produced can be transmitted to on the heat conduction board that corresponds, after cooling fan drives and gets into the heat dissipation wind channel from the air intake, the air current passes through two heat conduction boards, with the heat of heat conduction board follow the air outlet discharge, thereby realized radiating simultaneously two heat conduction boards, increased the radiating area of power converter, and so make the heat dissipation wind channel be located the middle part of quick-witted case, can accelerate the heat dissipation of the middle part region of quick-witted case like this, can effectively solve the problem that quick-witted case middle part radiating rate is slow, thereby can promote the complete machine radiating effect of power converter. And when radiating like this, can avoid the air current to pass through the installation cavity to can prevent entering into the installation cavity through the steam, liquid or the dust etc. in the radiating wind channel, thereby be convenient for with the sealed setting of installation cavity, be favorable to promoting power converter's waterproof nature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power converter according to an embodiment of the invention;

FIG. 2 is an exploded view of the power converter of FIG. 1;

FIG. 3 is a cross-sectional view of the power converter of FIG. 1;

FIG. 4 is a schematic diagram of a portion of the power converter of FIG. 1;

FIG. 5 is a schematic view of the air guiding assembly of FIG. 3;

FIG. 6 is a schematic diagram of a portion of the power converter of FIG. 1;

FIG. 7 is an enlarged view at A in FIG. 6;

FIG. 8 is a schematic view of the locking mechanism of FIG. 6;

fig. 9 is a cross-sectional view of the locking mechanism of fig. 8.

Reference numerals illustrate:

10. a chassis; 11. a heat dissipation cavity; 111. a heat dissipation air duct; 12. a mounting cavity; 13. an air inlet; 14. an air outlet; 15. a handle; 16. a plug hole; 20. a heat radiation fan; 21. a heat sink; 211. a heat dissipation gap; 212. a ventilation flow passage; 30. a circuit assembly; 31. a magnetic core component; 32. a MOS tube; 40. a heat conductive plate; 41. a mounting groove; 42. a heat radiation convex part; 50. an air guide assembly; 51. an air guide member; 52. a windshield cover plate; 60. a base; 61. a placement bit; 611. a disassembly side; 62. a limit structure; 621. a first limiting plate; 622. a plug-in column; 623. a second limiting plate; 63. a heat radiation hole; 70. a locking mechanism; 71. a connecting rod; 72. a limit cap; 721. a cap body; 721a, mounting holes; 721b, baffles; 722. a first latch; 723. a limit sleeve; 724. a second latch; 725. a limit groove; 726. a screw sleeve; 726a, a first connection section; 726b, a second connection section; 727. an elastic member; 80. a connecting block; 81. a first limit part; 90. mounting base

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a power converter.

In the embodiment of the present invention, as shown in fig. 1 to 9, the power converter includes a chassis 10, a heat dissipation fan 20, and a circuit device.

The heat-conducting plate (40) is arranged in the case (10), the two heat-conducting plates (40) divide the inner cavity of the case (10) into a heat-radiating cavity (11) and two mounting cavities (12), the heat-radiating cavity (11) is positioned between the two mounting cavities (12), a heat-radiating air duct (111) is formed in the heat-radiating cavity (11), an air inlet (13) and an air outlet (14) are arranged at two opposite sides of the heat-radiating cavity (11), and the air inlet (13) and the departure opening are positioned at two ends of the heat-radiating air duct (111); the heat dissipation fan 20 is arranged in the heat dissipation air duct 111 and is used for driving air flow to enter the heat dissipation air duct 111 from the air inlet 13 and then to be discharged from the air outlet 14; the circuit arrangement comprises two circuit components 30, one of the circuit components 30 being arranged in one of the mounting cavities 12 and the other circuit component 30 being arranged in the other mounting cavity 12.

Specifically, the two heat-conducting plates 40 are arranged substantially in parallel, and the heat-conducting plates 40 are partitions between the heat-dissipating air duct 111 and the installation cavity 12. The two circuit components 30 are a power conversion module and a filtering module, and the power conversion module and the filtering module are respectively installed in the two installation cavities 12, so that heat generated by the power conversion module and the filtering module during operation can be transferred to the corresponding heat conducting plates 40, and when the heat radiating fan 20 drives the air from the air inlet 13 to enter the heat radiating air duct 111, air flow can simultaneously pass through the two heat conducting plates 40, and heat dissipation of the two heat conducting plates 40 is achieved simultaneously. Of course, in other embodiments, some components in the power conversion module and some components in the filtering module may be mounted simultaneously within the same mounting cavity 12.

The air inlet 13 and the air outlet 14 that set up relatively to make the air current get into the back from air inlet 13, under the effect of radiator fan 20, can be quick with the air current from air outlet 14 discharge, promoted the velocity of flow of air current, with the air current that makes in getting into the heat dissipation wind channel 111, can be quick follow air outlet 14 discharge, can promote the radiating effect of power converter promptly.

The heat conducting plate 40 separates the installation cavity 12 from the heat dissipation air duct 111, so that air flow exchange between the heat dissipation air duct 111 and the installation cavity 12 can be avoided, moisture and liquid passing through the heat dissipation air duct 111 can be prevented from entering the installation cavity 12, and the waterproofness of the power converter is improved.

According to the power converter, two heat-conducting plates 40 are arranged in a case 10, the two heat-conducting plates 40 divide the interior of the case 10 into two mounting cavities 12 and a heat dissipation cavity 11 positioned between the two mounting cavities 12, the heat dissipation cavity 11 forms a heat dissipation air duct 111, an air inlet 13 and an air outlet 14 positioned at two ends of the heat dissipation air duct 111 are arranged in the heat dissipation air duct 111, a heat dissipation fan 20 for driving air flow to enter the heat dissipation air duct 111 from the air inlet 13 and then be discharged from the air outlet 14 is arranged in the heat dissipation air duct 111, two circuit components 30 are arranged in a circuit device, and the two circuit components 30 are respectively arranged in the two mounting cavities 12. In this way, when the power converter is in use, heat generated by the circuit assembly 30 in each mounting cavity 12 can be transferred to the corresponding heat conducting plate 40, and when the heat radiating fan 20 drives the heat radiating air duct 111 from the air inlet 13, air flows through the two heat conducting plates 40 to discharge the heat of the heat conducting plates 40 from the air outlet 14, so that the two heat conducting plates 40 are simultaneously radiated, the radiating area of the power converter is increased, the heat radiating air duct 111 is positioned in the middle of the chassis 10, the heat radiation of the middle area of the chassis 10 can be accelerated, the problem that the heat radiating speed of the middle of the chassis 10 is low can be effectively solved, and the whole heat radiating effect of the power converter can be improved. And when radiating like this, can avoid the air current to pass through installation cavity 10 to can prevent entering into installation cavity 12 through the steam, liquid or dust etc. of heat dissipation wind channel 111, thereby be convenient for with installation cavity 10 seal arrangement, be favorable to promoting power converter's waterproof nature.

In some embodiments, at least one heat conducting plate 40 is provided with a plurality of heat dissipating fins 21 on one side of the heat dissipating cavity 11, and the plurality of heat dissipating fins 21 extend to the heat dissipating air duct 111 and extend along the length direction of the heat dissipating air duct 111, and a heat dissipating gap 211 is formed between two adjacent heat dissipating fins 21.

Specifically, the heat conducting plate 40 can transfer the heat generated by the circuit assembly 30 to the plurality of heat dissipating fins 21, so as to enlarge the heat transfer area, i.e. increase the heat dissipation area, when the heat dissipating fan 20 drives the air flow to enter the heat dissipating air duct 111 from the air inlet 13, the air flow flows into the heat dissipation gap 211 formed between two adjacent heat dissipating fins 21, and the heat of the plurality of heat dissipating fins 21 is discharged from the air outlet 14 together, so that the heat dissipating fins 21 can be dissipated simultaneously, and the heat dissipation area of the heat conducting plate 40 is increased, so that the heat dissipation effect is improved. In the present embodiment, a plurality of heat dissipation fins 21 may be disposed on one side of the heat dissipation chamber 11 of one heat conduction plate 40, or a plurality of heat dissipation fins 21 may be disposed on one side of the heat dissipation chamber 11 of two heat conduction plates 40 at the same time, which is not particularly limited in this application. Among these, the plurality of fins 21 include, but are not limited to, two, three, four, or more. Of course, in other embodiments, at least one heat conducting plate 40 is provided with only one heat sink 21 on one side of the heat dissipation chamber 11.

In some embodiments, a mounting groove 41 is provided on a side of the at least one heat conducting plate 40 facing away from the heat dissipation cavity 11, and the circuit assembly 30 includes a magnetic core component 31, where the magnetic core component 31 is mounted in the mounting groove 41.

Specifically, in this application, the magnetic core element 31 is a transformer, the magnetic core element 31 is a device that generates larger heat in the circuit component 30, and when the magnetic core element 31 is installed in the installation groove 41 on the heat conducting plate 40, the bottom wall and the peripheral wall of the installation groove 41 can both absorb the heat emitted by the magnetic core element 31, that is, the contact area between the magnetic core element 31 and the heat conducting plate 40 is increased, so that the heat of the magnetic core element 31 can be better transferred to the heat conducting plate 40, and the heat dissipation effect is improved. In the present embodiment, the mounting groove 41 may be provided on one side of the heat-conducting plate 40 located in the heat-dissipating cavity 11, or the mounting groove 41 may be provided on one side of the heat-conducting plate 40 located in the heat-dissipating cavity 11, which is not particularly limited in this application. The design of the present application is not limited thereto, and in other embodiments, the mounting groove 41 may not be provided on the heat conducting plate 40, and the magnetic core component 31 and the side of the heat conducting plate 40 facing away from the heat dissipation cavity 11 may be in heat conduction connection.

In some embodiments, the side of the heat-conducting plate 40 facing away from the heat-dissipating cavity 11 is recessed to form a mounting groove 41, and raised to form a heat-dissipating protrusion 42 on the side of the heat-dissipating cavity 11.

Specifically, in the process that the heat dissipation fan 20 drives the air flow to enter the heat dissipation air duct 111 from the air inlet 13 and then is discharged from the air outlet 14, the heat dissipation convex portion 42 can receive the air flow blown by the heat dissipation fan 20, so that the contact area between the heat conduction plate 40 and the air flow is increased, and the heat dissipation efficiency of the heat conduction plate 40, that is, the heat dissipation efficiency of the magnetic core component 31 is improved. Of course, in other implementations, the mounting groove 41 is located on one side of the heat dissipation chamber 11 without forming the heat dissipation protrusion 42.

In some embodiments, at least one heat conductive plate 40 is provided with a mounting groove 41 and a heat sink 21, and at least a portion of the heat sink 21 is correspondingly provided at a portion of the heat conductive plate 40 where the mounting groove 41 is provided.

Specifically, the mounting groove 41 and the heat sink 21 are simultaneously disposed on the same heat conducting plate 40, specifically, the heat conducting plate 40 with the magnetic core component 31 is higher than the heat conducting plate 40 without the magnetic core component 31, and when the mounting groove 41 and the heat sink 21 are disposed on the same heat conducting plate 40, the heat conducting plate 40 can conduct the heat of the magnetic core component 31 to the heat sink 21, which is equivalent to increasing the heat dissipation area of the heat conducting plate 40, thereby improving the heat dissipation efficiency of the heat conducting plate 40, that is, improving the heat dissipation efficiency of the magnetic core component 31. In the present embodiment, the mounting groove 41 and the heat sink 21 may be provided in one heat conductive plate 40, or the mounting groove 41 and the heat sink 21 may be provided in two heat conductive plates 40 at the same time, which is not particularly limited in this application. Of course, in other embodiments, both heat conductive plates 40 are provided with mounting slots 41 and heat sink 21.

In some embodiments, the power converter further includes an air guiding assembly 50, where the air guiding assembly 50 includes a plurality of air guiding members 51, the air guiding members 51 are disposed in the heat dissipation air duct 111 passing through the heat dissipation convex portion 42 and on opposite sides of the heat dissipation convex portion 42, and the air guiding members 51 are disposed at intervals with the heat conduction plate 40 and the heat dissipation convex portion 42, so as to form ventilation channels 212 between the air guiding members 51 and the heat conduction plate 40 and between the air guiding members 51 and the heat dissipation convex portion 42, and a gap between the air guiding members 51 and the heat conduction plate 40 is greater than a height of the heat dissipation convex portion 42.

Specifically, when the heat dissipation fan 20 drives the airflow to blow from the heat dissipation air duct 111 to the heat dissipation convex portion 42, because the heat dissipation convex portion 42 and the heat conduction plate 40 are not in the same plane, when the airflow flows to the heat dissipation convex portion 42, the airflow directly blows from the top surface of the heat dissipation convex portion 42, so that the airflow flowing through the root portion of the heat dissipation convex portion 42 and the surface of the heat conduction plate 40 near the heat dissipation convex portion 42 is less, and a heat dissipation dead angle occurs. And through setting up wind guide piece 51 in the opposite both sides of heat dissipation convex part 42, the clearance between wind guide piece 51 and the heat conduction board 40 is greater than the high distance of heat dissipation convex part 42 top surface and heat conduction board 40 surface, when heat dissipation fan 20 impels the air current to blow to wind guide piece 51 from heat dissipation wind channel 111, wind guide piece 51 can guide the wind that heat dissipation fan 20 bloied to ventilation runner 212, let the air current fully flow through heat conduction board 40 and heat dissipation convex part 42's surface, thereby dispel the heat to heat dissipation convex part 42 root position and heat conduction board 40 near heat dissipation convex part 42, increased the radiating area, thereby promoted the radiating efficiency of heat conduction board 40. Of course, in other embodiments, the air guide assembly 50 may not be provided.

In some embodiments, wind-guiding assembly 50 further includes a wind-shielding cover plate 52, wind-shielding cover plate 52 covers heat-dissipating fins 21 and heat-dissipating protrusions 42, and wind-guiding member 51 is fixed to wind-shielding cover plate 52.

Specifically, the plurality of air guide members 51 are all installed on the wind shielding cover plate 52, and then the wind shielding cover plate 52 covers the cooling fins 21, so that the installation of a single air guide member 51 is not required, and the installation difficulty of the air guide member 51 is reduced. Of course, in other embodiments, the wind directing assembly 50 may not include the windshield plate 52.

In some embodiments, the wind guide 51 is provided with a windward section and a leeward section, the windward section and the leeward section are disposed obliquely to the heat conductive plate 40, and the distance between the windward section and the heat conductive plate 40 is gradually reduced in the airflow direction, and the distance between the leeward section and the heat conductive plate 40 is gradually increased in the airflow direction.

Specifically, when the cooling fan 20 drives the airflow to blow from the cooling air duct 111 to the air guide 51, the windward side arranged obliquely can guide the airflow so that the airflow can flow to the heat conducting plate 40 more smoothly, thereby realizing cooling, and when the airflow flows through the ventilation flow channel 212, the leeward side arranged obliquely can guide the airflow so that the airflow can be discharged from the cooling air duct 111 more smoothly, thereby improving the cooling efficiency of the heat conducting plate 40. Of course, in other embodiments, both the windward side and the leeward side of the wind guide 51 are disposed perpendicularly to the heat conductive plate 40.

In some embodiments, the circuit assembly 30 includes a plurality of MOS transistors 32 (MOS: MOSFET metal, oxide semiconductor field effect transistor), and the MOS transistors 32 are mounted on the heat conductive plate 40 and are thermally connected to the heat conductive plate 40.

Specifically, the MOS tube 32 belongs to a device generating larger heat in the circuit assembly 30, and when the magnetic core component 31 is mounted on the heat conducting plate 40, the MOS tube 32 can better transfer the heat to the heat conducting plate 40, so that the heat dissipation effect is improved. In other embodiments, MOS tube 32 is mounted to the cavity wall of mounting cavity 12.

In some embodiments, the power converter includes a plurality of heat dissipation fans 20, and the plurality of heat dissipation fans 20 are spaced along the arrangement direction of the plurality of heat dissipation fins 21.

Specifically, the plurality of heat dissipation fans 20 are arranged, so that the air volume in the heat dissipation air duct 111 is larger, that is, the heat dissipation fins 21 can receive more air flow, thereby further improving the heat dissipation effect. Among these, the plurality of heat dissipation fans 20 include, but are not limited to, two, three, four, or more. Of course, in other embodiments, only one cooling fan 20 is provided for the power converter.

In some embodiments, a plurality of heat dissipation fans 20 are disposed spaced apart from the plurality of heat dissipation fins 21. Specifically, during the airflow blowing process, the airflow is diffused around the plurality of heat dissipation fans 20, so that each heat dissipation air duct 111 can simultaneously receive the air blown by the plurality of heat dissipation fans 20, and the air volume in each heat dissipation air duct 111 is increased, that is, the heat dissipation effect of the power converter is improved. Of course, in other embodiments, the plurality of heat dissipation fans 20 are not spaced apart from the plurality of heat dissipation fins 21.

In some embodiments, the power converter further includes a handle 15, the handle 15 being provided on an outer side of the cabinet 10. Specifically, in the process of carrying, the user can hold the handle 15 to carry the power converter, so that the usability of the power converter is improved. Of course, in other embodiments, the power converter is not provided with a handle 15.

In some embodiments, the power converter further includes a base 60 and a locking mechanism 70, the base 60 is provided with a placement position 61 and a limiting structure 62, the placement position 61 is provided with a disassembly side 611, the chassis 10 is detachably mounted on the placement position 61 through the disassembly side 611 and is in limiting fit with the limiting structure 62, a first limiting part 81 is arranged at a part of the chassis 10, which is positioned on the disassembly side 611, the locking mechanism 70 includes a connecting rod 71 and a limiting cap 72, the connecting rod 71 is arranged on the disassembly side 611 and extends in a direction away from the placement position 61, and the limiting cap 72 is adjustably sleeved on the connecting rod 71 along the length direction of the connecting rod 71; the side of the limiting cap 72 facing the placement position 61 is provided with a second limiting portion, and when the limiting cap 72 moves to the locking position along the connecting rod 71 towards the direction of the placement position 61, the first limiting portion 81 and the second limiting portion are in limiting fit to limit the chassis 10 to move outwards towards the placement position 61 through the dismounting side 611.

Specifically, when the case 10 needs to be mounted on the base 60, the user pushes the case 10 into the mounting and dismounting side 611, and when the user pushes the case 10 into the placement position 61, the limiting structure 62 limits the case 10, at this time, the user drives the limiting cap 72 to move to the locking position toward the placement position 61, so that the first limiting portion 81 and the second limiting portion are in limiting fit, and the limiting structure 62 is matched with the locking structure, so as to limit the case 10 in multiple directions of the x-axis direction, the y-axis direction and the z-axis direction of the case 10, thereby fixing the case 10 on the base 60. Through fixed spacing cap 72, can be with spacing cap 72 be fixed in the locking position to realize the spacing of stability of first spacing portion 81 and second spacing portion, that is to say, realized the steady installation of quick-witted case 10 on base 60.

When the chassis 10 needs to be detached from the base 60, the user drives the limit cap 72 to move from the locking position to a direction away from the placement position 61 to release the limit fit of the first limit portion 81 and the second limit portion, so that the chassis 10 can be detached from the placement position 61 through the dismounting side 611. Thus, the chassis 10 can be assembled and disassembled on the base 60 without screwing the threaded fastener, and the convenience of assembling and disassembling for a user is improved.

In some embodiments, the connecting rod 71 is provided with external threads and the limit cap 72 is provided with a threaded bore that mates with the external threads.

Specifically, the limiting cap 72 is in threaded connection with the connecting rod 71, and a user screws the limiting cap 72 to enable the limiting cap 72 to move in the length direction of the connecting rod 71, so that the limiting cap can easily move to the locking position and leave the locking position, and the limiting cap is equivalent to the mode that the limiting cap can be easily in limit fit with the first limiting portion 81, and in addition, the structure is simple, and the movement is reliable. Of course, in other embodiments, the outer side surface of the connecting rod 71 is provided with a plurality of adjusting grooves, the plurality of adjusting grooves are distributed at intervals in the length direction of the connecting rod 71, the limiting cap 72 is provided with a connecting hole, the wall of the connecting hole is provided with a clamping protrusion, and the clamping protrusion can be clamped into one of the plurality of adjusting grooves at will.

In some embodiments, the limiting cap 72 includes a cap body 721, a threaded sleeve 726 and a limiting sleeve 723, the threaded sleeve 726 is provided with a threaded hole, the cap body 721 is movably sleeved outside the threaded sleeve 726 along an axial direction of the threaded sleeve 726, a first rotation preventing structure is arranged between the cap body 721 and the threaded sleeve 726 to limit the rotation of the cap body 721 relative to the threaded sleeve 726, the limiting sleeve 723 is movably sleeved outside the connecting rod 71 along a length direction of the connecting rod 71 and is positioned between the cap body 721 and the base 60, a second rotation preventing structure is arranged between the limiting sleeve 723 and the connecting rod 71, and a third rotation preventing structure is arranged between the limiting sleeve 723 and the cap body 721.

Specifically, the cap 721 is provided with a mounting hole 721a, the screw sleeve 726 is mounted in the mounting hole 721a and screwed to the connecting rod 71, and the mounting hole 721a is provided with a stopper 62 for preventing the screw sleeve 726 from falling out of the mounting hole 721 a. That is, the limiting structure is used to prevent the cap 721 from being separated from the screw sleeve 726, the limiting sleeve 723 is provided with a connecting hole, and the limiting sleeve 723 is sleeved outside the connecting rod 71 through the connecting hole.

When the threaded sleeve 726 is installed in the installation hole 721a, the threaded sleeve 726 and the cap body 721 are in limit fit through the first anti-rotation structure, so that the cap body 721 can be limited to rotate relative to the threaded sleeve 726, and the threaded sleeve 726 can be driven to rotate on the connecting rod 71 when the cap body 721 is screwed, and the threaded sleeve 726 and the cap body 721 can move along the length direction of the connecting rod 71.

When the stop collar 723 is movably sleeved on the connecting rod 71 along the length direction of the connecting rod 71, and a second anti-rotation structure is arranged between the stop collar 723 and the connecting rod 71, the stop collar 723 can be limited to rotate relative to the connecting rod 71, so that the stop collar 723 can only move along the length direction of the connecting rod 71.

When the cap 721 is spaced apart from the stop collar 723, that is, the third rotation preventing structure between the cap 721 and the stop collar 723 is in a separated state, the cap 721 and the stop collar 723 do not interfere with each other. When the cap 721 and the screw sleeve 726 move to the locking position, the cap 721 and the limiting sleeve 723 are in limit fit through the third rotation preventing structure, so that the cap 721 can be limited to rotate relative to the connecting rod 71 through the limiting sleeve 723 and the screw sleeve 726, and the limiting sleeve 723 can be effectively prevented from moving in the direction away from the machine body 10, so that the limiting sleeve 723 can be stably kept at the locking position, the machine body 10 is stably limited, and the installation stability of the machine body 10 on the base 60 is improved. In other embodiments, the cap 721, the sleeve 726, and the stop collar 723 are integrally formed.

The specific structure of the first rotation preventing structure may be various, for example, in an embodiment, the first rotation preventing structure includes a first rotation preventing plane provided in the threaded sleeve 726 and a second rotation preventing plane provided in the mounting hole 721a, the second rotation preventing plane extends along the axial direction of the mounting hole 721a, and the first rotation preventing plane cooperates with the second rotation preventing plane to limit the rotation of the cap 721 relative to the threaded sleeve 726. Specifically, the mounting hole 721a may be a flat hole or a polygonal hole, and the cross-sectional shape of the screw sleeve 726 corresponds to the shape of the mounting hole 721 a. In another embodiment, the first anti-rotation structure includes a groove provided in the mounting hole 721a and a protrusion protruding from an outer side surface of the threaded sleeve 726, the groove extending in an axial direction of the mounting hole 721a, and the protrusion extending into the groove when the threaded sleeve 726 is mounted in the mounting hole 721 a.

The specific structure of the second rotation preventing structure may be various, for example, in an embodiment, the second rotation preventing structure includes a third rotation preventing plane disposed on an outer sidewall of the connecting rod 71 and a fourth rotation preventing plane disposed in the connecting hole, the third rotation preventing plane extends along a length direction of the connecting rod 71, and the third rotation preventing plane cooperates with the second rotation preventing plane to limit the rotation of the stop collar 723 relative to the connecting rod 71. In another embodiment, the second anti-rotation structure includes a sliding groove concavely disposed on the outer side wall of the connecting rod 71 and a sliding block convexly disposed in the connecting hole, the sliding groove extends along the length direction of the connecting rod 71, and when the limiting sleeve 723 is sleeved on the connecting rod 71, the sliding block extends into the sliding groove.

The specific structure of the third rotation preventing structure may be various, in some embodiments, the third rotation preventing structure includes a plurality of first latches 722 disposed on an end surface of the stop collar 723 and a plurality of second latches 724 disposed on the cap 721, the plurality of first latches 722 and the plurality of second latches 724 are circumferentially spaced along the stop cap 72, any one of the first latches 722 may be inserted between two adjacent second latches 724, and when the cap 721 and the screw sleeve 726 move to the locking position, the first latches 722 are inserted between the two adjacent second latches 724 to form a limiting fit, so that the cap 721 may be limited to rotate relative to the connecting rod 71 by the first latches 722 and the second latches 724. When the cap 721 is spaced from the stop collar 723, the first latch 722 and the second latch 724 are separated and no longer stop, and at this time, the cap 721 can be screwed to rotate the screw sleeve 726 on the connecting rod 71. Of course, in other embodiments, the third anti-rotation structure includes a locking protrusion provided on an end surface of the stop collar 723 and a locking hole provided on an end surface of the cap 721, into which the locking protrusion is inserted; or the third rotation preventing structure comprises a clamping hole arranged on the end surface of the limiting sleeve 723 and a clamping protrusion arranged on the end surface of the cap 721, and the clamping protrusion is inserted into the clamping hole.

In some embodiments, the stop cap 72 further includes an elastic member 727, where the elastic member 727 is disposed between the cap body 721 and the screw sleeve 726, and has elastic deformation that drives the cap body 721 relative to the screw sleeve 726 toward the direction in which the stop sleeve 723 is located.

Optionally, the screw sleeve 726 includes a first connection section 726a and a second connection section 726b, a first rotation preventing structure is disposed between the second connection section 726b and the cap body, the outer diameter of the first connection section 726a is smaller than the outer diameter of the second connection section 726b, a baffle 721b is disposed at a notch of the mounting hole 721a, the baffle 721b is in a ring shape extending along the circumferential side of the mounting hole 721a, an elastic member 727 is disposed in the mounting hole 721a and is sleeved on the first connection section 726a, one end of the elastic member 727 abuts against the second connection section 726b, the other end abuts against the baffle 721b, and the inner diameter of the baffle 721b is larger than the outer diameter of the first connection section 726a, so that the cap body 721 can be prevented from interfering with the first connection section 726a when moving along the axial direction of the screw sleeve 726. When the elastic member 727 is mounted between the second connecting section 726b and the baffle 721b, the elastic member 727 in a compressed state pushes the cap 721 to move towards the stop collar 723, so that the stop collar 723 can be pushed against the locking position under the action of the elastic member 727, that is, the machine body 10 can be stably locked, and the mounting stability of the machine body 10 is improved.

If the machine body 10 is to be disassembled from the base 60, only the cap 721 is driven to move in a direction away from the locking position, so that the cap 721 and the stop collar 723 are separated from the stop fit of the first latch 722 and the second latch 724, then the cap 721 is rotated to drive the screw sleeve 726 to rotate, the acting force is removed until the axial force is not required to be continuously applied when the cap 721 and the stop collar 723 are not in the limit range of the third limit structure 62, the cap 721 is continuously rotated to move in a direction away from the stop collar 723, and then the stop collar 723 is driven to move in a direction away from the locking position to release the locking of the machine body 10, so that the machine body 10 can be disassembled from the base 60.

Unlike the above-mentioned mounting manner of the elastic member 727, in other embodiments, the outer side surface of the screw sleeve 726 is provided with a plurality of grooves, the plurality of grooves are distributed at intervals along the circumferential direction of the screw sleeve 726, each groove extends along the axial direction of the screw sleeve 726, a compression spring is disposed in each groove, a bump is disposed at a position of the baffle 721b corresponding to each groove, each bump extends into the corresponding groove, and the compression spring abuts between the bump and the screw sleeve 726.

Alternatively, the elastic member 727 may be provided as a compression spring, a spring piece, an elastic pad, or the like in the moving direction of the cap 721. Of course, the design of the present application is not limited thereto, and in other embodiments, the stop collar 723 and the cap 721 may be kept in the stop state of the third stop structure 62 under the action of magnetic force, for example, the stop collar 723 is magnetically engaged with the cap 721 or the cap 721 is magnetically engaged with the threaded sleeve 726.

In some embodiments, the third rotation preventing structure includes a plurality of first latches 722 disposed on an end surface of the stop collar 723 and a plurality of second latches 724 disposed on an end surface of the cap 721, where the plurality of first latches 722 and the plurality of second latches 724 are all distributed at intervals along a circumferential direction of the stop cap 72, and any one of the first latches 722 can be inserted between two adjacent second latches 724.

Specifically, when the chassis 10 needs to be mounted on the base 60, the stop collar 723 is moved to the locking position along the length direction of the connecting rod 71, when the stop collar 723 is buckled on the first stop portion 81, the cap 721 is rotated to drive the screw sleeve 726 to rotate towards the stop collar 723, when the cap 721 is close to the stop collar 723, a force is applied to the cap 721 towards a direction away from the stop collar 723, then the cap 721 is continuously rotated, when the screw sleeve 726 is closer to the stop collar 723, no force is applied to the cap 721, the elastic element 727 is elastically deformed when no pressure is applied, and drives the cap 721 to move towards the stop collar 723, so that the first latch 722 is meshed with the second latch 724, and under the meshing restriction of the first latch 722 and the second latch 724, the screw sleeve 726 can be prevented from rotating relative to the connecting rod 71, and therefore the stop collar 723 can be stably limited to the locking position, and the mounting stability of the chassis 10 is improved.

When the chassis 10 needs to be detached from the base 60, the cap 721 is biased away from the stop collar 723 to disengage the first latch 722 from the second latch 724, and the cap 721 is moved away from the stop collar 723, and when a certain distance exists between the cap 721 and the stop collar 723, the stop collar 723 is moved away from the locking position to release the stop engagement between the stop collar 723 and the first stop portion 81, so that the chassis 10 can be detached from the base 60. The whole process is simple and convenient to operate and does not need tools. The first plurality of latches 722 and the second plurality of latches 724 may be two, three, four or more, and the present application is not particularly limited thereto. Of course, in other embodiments, the third rotation preventing structure includes a locking protrusion provided on an end surface of the stop collar 723 and a locking groove provided on an end surface of the cap 721, and the locking protrusion is inserted into the locking groove.

In some embodiments, the stop collar 723 is provided with a stop slot 725, the stop slot 725 is annular and extends circumferentially along the stop collar 723, and the second stop portion protrudes from the outer surface of the chassis 10, and when the stop cap 72 moves to the locking position, the second stop portion is clamped into the stop slot 725.

Specifically, when the stop collar 723 moves to the locking position, the stop slot 725 can extend into the stop slot 725 between the first stop portions 81, and the clamping fit is performed, so that the use experience of the user is improved. Of course, in other embodiments, the stop slot 725 is configured as an arc extending circumferentially along the stop collar 723.

In some embodiments, one end of the connecting rod 71 is hinged to the base 60 and is located at a position below the detachable side 611, and the rotation axis of the connecting rod 71 extends along the length direction of the detachable side 611.

Specifically, the connecting rod 71 can rotate in comparison with the base 60, so that when the height deviation exists between the first limiting portion 81 and the second limiting portion, the position of the limiting groove 725 can be adaptively adjusted by rotating the base 60, so that the positions of the second limiting portion and the first limiting portion 81 correspond to each other, and the use experience of a user is improved. Optionally, a mounting seat 90 is disposed on the base 60 and located at a lower side of the dismounting side 611, and one end of the connecting rod 71 is hinged to the mounting seat 90, so as to reduce the mounting difficulty of the connecting rod 71. Of course, in other embodiments, the connecting rods 71 are fixedly connected to the base 60.

In some embodiments, the limiting structure 62 includes a first limiting plate 621, the first limiting plate 621 and the dismounting side 611 are separately disposed on two opposite sides of the base 60, a plug post 622 is disposed on a side of the first limiting plate 621 facing the dismounting side 611, a plug hole 16 is disposed on an outer side of the chassis 10, and the plug post 622 is inserted into the plug hole 16 when the chassis 10 is placed into the placement position 61 through the dismounting side 611.

Specifically, when the chassis 10 is placed in the placement position 61, the plug posts 622 are plugged in the plug holes 16, so that the chassis 10 can be limited in the x-axis direction and the y-axis direction, the first limiting plate 621 and the locking mechanism 70 limit the front-back direction of the chassis 10, the multi-directional limitation of the chassis 10 is realized, the structure of the plug fit structure is simpler, and the stable limitation of the chassis 10 can be realized. Of course, in other embodiments, two sides of the dismounting side 611 are respectively provided with a limiting plate, opposite sides of the two limiting plates are provided with a sliding groove, the sliding groove extends along the length direction of the placement position 61, the sliding groove forms an opening towards one end of the dismounting side, opposite side walls of the sliding groove are provided with a convex part, the convex part is spaced from the bottom wall of the sliding groove, outer side surfaces of opposite sides of the chassis 10 are provided with sliding blocks matched with the sliding groove, and the sliding blocks are slidably mounted in the sliding groove.

In some embodiments, the limiting structure 62 further includes two second limiting plates 623, where the two second limiting plates 623 are disposed on opposite sides of the base 60, and each extends from a side of the first limiting plate 621 toward the detachable side 611, and a placement position 61 is formed between the first limiting plate 621 and the two second limiting plates 623.

Specifically, in the process of installation, the chassis 10 is pushed in from the dismounting side 611, and the second limiting plates 623 on two sides can limit the chassis 10 in the left-right direction, so that the plugging holes 16 on the chassis 10 can correspond to the plugging posts 622 on the first limiting plates 621, the chassis 10 is prevented from being deviated in the position in the process of pushing, the installation difficulty of the chassis 10 is reduced, and the use experience of a user is improved. Of course, in other embodiments, the limiting structure 62 may not be provided with the second limiting plate 623.

In some embodiments, the power converter includes a plurality of locking mechanisms 70, the plurality of locking mechanisms 70 are distributed at intervals along a length direction of the detachable side 611, and a first limiting portion 81 is disposed on the chassis 10 corresponding to a position of each locking mechanism 70.

Specifically, the plurality of spaced locking mechanisms 70 simultaneously limit the case 10, so that the limit area of the case 10 is increased, and the limit of the case 10 is improved, namely, the mounting stability of the case 10 is improved. Wherein the plurality of locking mechanisms 70 includes two, three, four or more, and the user can set the locking mechanism according to specific needs. Of course, in other embodiments, only one locking mechanism 70 may be provided.

In some embodiments, the first limiting plate 621 is provided with a plurality of plug posts 622 spaced apart from each other, and the outer side surface of the chassis 10 is provided with a plug hole 16 corresponding to each plug post 622.

Specifically, the plurality of plugging posts 622 are simultaneously plugged and matched with the chassis 10, so that the limiting area is increased, that is, the installation stability of the chassis 10 on the base 60 is improved. Wherein the plurality of posts 622 may comprise two, three, four, or more, and may be configured by a user as desired. Of course, in other embodiments, only one peg 622 may be provided.

In some embodiments, the placement site 61 is provided with a heat sink 63, the heat sink 63 extending through the base 60. It will be appreciated that when the enclosure 10 is mounted on the mounting location 61, a portion of the heat of the enclosure 10 can be dissipated from the heat dissipation holes 63, and the overall temperature of the enclosure 10 can be reduced. Of course, in other embodiments, the placement bits 61 are not provided with the heat dissipation holes 63.

In some embodiments, the chassis 10 includes a housing and a connection block 80, where the connection block 80 is detachably mounted on an outer side of the housing, and is provided with a first limiting portion 81.

Specifically, when the connecting block 80 is damaged, the connecting block 80 can be detached from the casing for replacement, so that the use experience of a user is improved. Of course, in other embodiments, the connection block 80 is fixedly mounted to the outside of the housing.

In some embodiments, the housing outer side is provided with a mounting groove 41, the connection block 80 is mounted to the mounting groove 41 by a screw, and the second limiting plate 623 protrudes from the surface of the housing 10.

Specifically, when the connecting block 80 is mounted on the mounting groove 41, the groove wall of the mounting groove 41 can abut against the side wall of the connecting block 80, so that the limit fit of the limit groove 725 at the first limit portion 81 is more stable and more reliable. Through the fixed mounting means of screw, can guarantee that connecting block 80 installation is stable in the time, the dismantlement of connecting block 80 of also being convenient for has promoted user's use and has experienced. Of course, in other embodiments, the mounting groove 41 is not provided on the outside of the casing, and the connection block 80 is mounted on the outside of the casing by screws.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A power converter, comprising:

2. The power converter as set forth in claim 1, wherein at least one of said heat-conducting plates is provided with a plurality of heat-radiating fins on a side of said heat-radiating cavity, and a plurality of said heat-radiating fins each extend to said heat-radiating air duct and each extend along a length direction of said heat-radiating air duct, and a heat-radiating gap is formed between two adjacent heat-radiating fins.

3. The power converter of claim 2 wherein at least one of said heat conductive plates has a mounting slot on a side facing away from said heat dissipation chamber, said circuit assembly including a magnetic core component mounted in said mounting slot.

4. A power converter as claimed in claim 3, wherein a side of the heat-conducting plate facing away from the heat-dissipating cavity is recessed to form the mounting groove, and a side of the heat-dissipating cavity is raised to form a heat-dissipating protrusion.

5. The power converter as set forth in claim 4 wherein at least one of said heat conductive plates is provided with said mounting groove and said heat sink, at least a portion of said heat sink being correspondingly provided to a portion of said heat conductive plate provided with said mounting groove.

6. The power converter of claim 5 further comprising a wind guide assembly comprising a plurality of wind guide members passing through the heat dissipation air channels of the heat dissipation protrusions and disposed on opposite sides of the heat dissipation protrusions, wherein the wind guide members are spaced apart from the heat conduction plates and the heat dissipation protrusions to form ventilation channels between the wind guide members and the heat conduction plates and between the wind guide members and the heat dissipation protrusions, and the gaps between the wind guide members and the heat conduction plates are greater than the protrusion heights of the heat dissipation protrusions.

7. The power converter as set forth in claim 6 wherein said air guide assembly further includes a weather flap, said weather flap overlying said heat sink and overlying said heat dissipating boss, said air guide being secured to said weather flap; and/or the number of the groups of groups,

8. The power converter as claimed in claim 1, further comprising a base and a locking mechanism, wherein the base is provided with a placement position and a limiting structure, the placement position has a disassembly side, the case is detachably mounted on the placement position through the disassembly side and is in limiting fit with the limiting structure, a first limiting part is arranged on a part of the case located on the disassembly side, the locking mechanism comprises a connecting rod and a limiting cap, the connecting rod is arranged on the disassembly side and extends in a direction away from the placement position, and the limiting cap is adjustably sleeved on the connecting rod along the length direction of the connecting rod; the spacing cap orientation one side of placing the position is equipped with the spacing portion of second, works as spacing cap edge the connecting rod orientation place the position place the orientation remove to the locking position, first spacing portion with spacing cooperation of spacing portion of second is used for the restriction the organism passes through dismouting side orientation place the position external motion.

9. The power converter as claimed in claim 8, wherein the limit cap includes a cap body, a screw sleeve and a limit sleeve, the screw sleeve is provided with the threaded hole, the cap body is movably sleeved outside the screw sleeve along an axial direction of the screw sleeve, a first rotation preventing structure is arranged between the cap body and the screw sleeve to limit the cap body to rotate relative to the screw sleeve, the limit sleeve is movably sleeved outside the connecting rod along a length direction of the connecting rod and is positioned between the cap body and the base, a second rotation preventing structure is arranged between the limit sleeve and the connecting rod, and a third rotation preventing structure is arranged between the limit sleeve and the cap body.

10. The power converter as set forth in claim 9 wherein said limit cap further comprises an elastic member disposed between said cap body and said sleeve and having an elastic deformation urging said cap body relative to said sleeve in a direction in which said limit sleeve is located; and/or the number of the groups of groups,