CN214545275U - Control box reaches refrigerator car including it - Google Patents

Abstract

The application provides a control box and including its refrigerator car. The control box comprises a box body, a cover plate, a waterproof piece and a heat dissipation assembly. The box is equipped with the equipment through-hole, and the equipment through-hole sets up with apron relatively. The cover plate is assembled on the box body, the box body and the cover plate are assembled to form a containing cavity, and the containing cavity is communicated with the assembling through hole. The waterproof piece is assembled in the box body and is arranged between the edge of the cover plate and the box body in a sealing mode. The heat dissipation assembly is assembled in the assembly through hole and at least partially positioned outside the box body, and the heat dissipation assembly is hermetically connected with the box body, so that the assembly through hole is isolated from the outside. The refrigerator car includes above-mentioned control box. Set up waterproof sealing between the edge of apron and box, can strengthen the leakproofness between the edge of apron and the box, with radiator unit and box sealing connection, can strengthen the leakproofness between radiator unit and the box to promote the waterproof ability of control box, improve security and user experience, and satisfy high protection level requirement.

Description

Control box reaches refrigerator car including it

Technical Field

The application relates to the technical field of refrigerated trucks, in particular to a control box and a refrigerated truck comprising the same.

Background

With the continuous development of new energy markets, the application of refrigerated vehicles is more and more extensive. The refrigerator car is a closed van type transport car for maintaining the temperature of frozen or fresh-keeping goods, and is a special transport car for refrigeration, which is provided with a refrigerating device of a refrigerating unit and a polyurethane heat insulation compartment. When in actual application, the refrigerating device of the refrigerating unit of the refrigerator car is arranged at the bottom of the refrigerator car, and the refrigerator car is waded, so that higher requirements are provided for the waterproof capacity of the electric parts in the refrigerator car, and otherwise, personal safety and user experience can be seriously influenced.

SUMMERY OF THE UTILITY MODEL

The application provides an improve control box of waterproof ability and including its refrigerator car.

The application provides a control box of refrigerator car includes:

a case body provided with an assembly through hole;

the cover plate is assembled on the box body, the box body and the cover plate are assembled to form a containing cavity, and the containing cavity is communicated with the assembling through hole;

the waterproof piece is assembled on the box body and is arranged between the edge of the cover plate and the box body in a sealing mode; and

and the heat dissipation assembly is assembled in the assembly through hole, at least part of the heat dissipation assembly is positioned outside the box body, and the heat dissipation assembly is hermetically connected with the box body so as to isolate the assembly through hole from the outside.

Optionally, the box includes main part and first kink, the main part includes the opening, the apron lid in the opening, first kink is buckled and is located the main part the open-ended edge, waterproof lay in first kink, the apron extrude in waterproof.

Optionally, the cover plate is provided with a plurality of first positioning holes, the box body is provided with a plurality of second positioning holes corresponding to the first positioning holes, the first positioning holes and the second positioning holes are arranged on the outer side of the waterproof part, the control box comprises a plurality of first fixing parts, and the first fixing parts penetrate through the first positioning holes and the second positioning holes to fix the cover plate to the opening of the box body.

Optionally, the box body further includes a second bending portion, the second bending portion is bent at the edge of the opening of the main body portion, and the plurality of second positioning holes are formed in the second bending portion.

Optionally, the first bending portion bends and extends from the edge of the main body portion to the inside of the opening, and the second bending portion bends and extends from the edge of the main body portion to the outside of the opening.

Optionally, the first bending portion and the main body portion are integrally formed, the first bending portion is bent from the edge of the main body portion, a bending process hole is formed between the first bending portion and the edge of the main body portion, the bending process hole is filled with soldering tin, and the soldering tin seals the bending process hole.

Optionally, the second bending portion and the main body portion are formed in a split manner, and the second bending portion is connected with the edge of the main body portion in a full-welding manner.

Optionally, the heat dissipation assembly is provided with a plurality of third positioning holes, the box body is provided with a plurality of positioning columns corresponding to the third positioning holes, waterproof sealant is arranged between the box body and the positioning columns, the control box comprises a plurality of second fixing pieces, and the second fixing pieces penetrate through the third positioning holes, are matched and assembled with the positioning columns, and fix the heat dissipation assembly outside the box body.

Optionally, the control box further includes an electric control assembly assembled in the accommodating cavity; the electric control assembly comprises a high-voltage power supply circuit and a low-voltage power supply circuit, the voltage output by the high-voltage power supply circuit is higher than the voltage output by the low-voltage power supply circuit, and at least part of the high-voltage power supply circuit is arranged on the heat dissipation assembly.

Optionally, the heat dissipation assembly comprises a heat dissipation surface facing the outside of the box body, the high-voltage power supply circuit comprises a direct-current diode and a three-phase rectification circuit, and the direct-current diode and the three-phase rectification circuit are arranged on the side back to the heat dissipation surface.

Optionally, the electronic control assembly includes an electronic control board assembled in the accommodating cavity, the electronic control assembly includes a plurality of low-voltage power circuits providing different power supplies, and the plurality of low-voltage power circuits are integrated on the same electronic control board.

Optionally, the flashing member comprises a waterproof sealing strip of the clip type.

Optionally, a waterproof sealant is arranged in a gap between the edge of the heat dissipation assembly and the box body.

Optionally, the control box is further provided with a waterproof connector and/or a waterproof pueraria lobata head which is connected with the box body and extends out of the box body.

Optionally, the box body comprises a plurality of butt-jointed edges, and at least two butt-jointed edges which are spliced with each other are in full-weld connection.

The application also provides a refrigerator car, including the control box of refrigerator car as in any one of above-mentioned.

The control box of refrigerator car of this application embodiment sets up waterproof sealing between the edge of apron and box, can strengthen the leakproofness between the edge of apron and the box, with radiator unit and box sealing connection, can strengthen the leakproofness between radiator unit and the box to promote the waterproof ability of control box, improve security and user experience, and satisfy high protection level requirement.

Drawings

FIG. 1 is an exploded view of one embodiment of the control box of the present application;

FIG. 2 is a schematic structural diagram of a box body of the control box shown in FIG. 1;

FIG. 3 is a schematic view of a portion of the control box of FIG. 1;

FIG. 4 is an exploded view of the assembled cover plate of the control box of FIG. 1;

FIG. 5 is a schematic view of the assembled cover plate of the control box of FIG. 1;

FIG. 6 is a schematic cross-sectional view of the control box of FIG. 1;

FIG. 7 is an exploded view of the assembled heat sink assembly of the control box of FIG. 1;

fig. 8 is a schematic structural view of the control box shown in fig. 1 after the heat dissipation assembly is assembled.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides a control box and refrigerator car thereof. The control box and the refrigerator car according to the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

The present application further provides a refrigerated vehicle including a control box 10 of the refrigerated vehicle. Because the refrigerating plant of the refrigerating unit of refrigerator car locates the bottom of refrigerator car, considers that the refrigerator car wades, consequently, through setting up control box 10, can promote the waterproof ability of the electric components in the refrigerator car, avoid influencing personal safety, improve security and user experience.

Referring to fig. 1, the control box 10 includes a box body 11, a cover plate 12, a waterproof member 13, and a heat dissipating assembly 14. In some embodiments, the case 11 is provided with an assembly through-hole 111, and the assembly through-hole 111 is disposed opposite to the cover 12. The cover plate 12 is assembled to the case 11, the case 11 and the cover plate 12 are assembled to form an accommodating cavity 15, and the accommodating cavity 15 is communicated with the assembling through hole 111. The waterproof member 13 is assembled to the case 11 and is hermetically provided between the edge of the cover plate 12 and the case 11. The heat dissipating assembly 14 is assembled in the assembling through hole 111 and at least partially located outside the case 11, and the heat dissipating assembly 14 is hermetically connected to the case 11 to isolate the assembling through hole 111 from the outside.

The control box 10 of the embodiment of the application, set up waterproof 13 sealed between the edge of apron 12 and box 11, can strengthen the leakproofness between the edge of apron 12 and the box 11, with radiator unit 14 and box 11 sealing connection, can strengthen the leakproofness between radiator unit 14 and the box 11, avoid outside water to enter into the box 11 from the edge of apron 12 or from radiator unit 14's edge, guarantee the leakproofness of box 11, thereby promote the waterproof ability of control box 10, improve security and user experience, and satisfy the requirement of high protection level.

Referring to fig. 1 to 8, the case 11 includes a main body 112 and a first bending portion 113. In the present embodiment, the main body 112 is formed by a sheet metal bending and welding process. In some embodiments, the box 11 includes a plurality of butt edges 114, and at least two butt edges 114 that are joined to each other are full-welded. The butt joint edge 114 refers to a bent butt joint of the box body 11, and is connected in a full-welding manner, so that a waterproof effect can be achieved. In the present embodiment, the abutting edge 114 is provided to the main body portion 112. In some embodiments, the main body 112 includes an opening 115, the cover 12 covers the opening 115, the first bending portion 113 is bent at an edge of the opening 115 of the main body 112, the waterproof member 13 is laid on the first bending portion 113, and the cover 12 is pressed against the waterproof member 13. So set up, can strengthen the leakproofness between the edge of apron 12 and the box 11, avoid outside water to enter into main part 112 from the edge of apron 12 in, guarantee the leakproofness of box 11 to promote the waterproof ability of control box 10, improve security and user experience, and satisfy high protection level requirement.

In some embodiments, the first bending portion 113 extends from the edge of the main body 112 toward the inside of the opening 115 (as shown in fig. 2). In some embodiments, the first bending portion 113 is integrally formed with the main body portion 112, the first bending portion 113 is bent from an edge of the main body portion 112, and a bending process hole is formed between the edge of the main body portion 112 and the bending process hole, and the bending process hole is filled with solder, and the solder seals the bending process hole (as shown in fig. 2 and 6). So set up, through the sealed fabrication hole of buckling of tin soldering, make the position leakproofness that main part 112 buckled better, avoid outside water to get into in main part 112 from the fabrication hole of buckling to promote the waterproof ability of control box 10, improve security and user experience, and satisfy high protection level requirement.

In some embodiments, one side of waterproof member 13 is adhered to first bending portion 113 before cover 12 is assembled, and the other side of waterproof member 13 corresponds to the edge of cover 12, and cover 12 presses waterproof member 13 to be fixed to main body 112 when cover 12 is assembled (as shown in fig. 5). In some embodiments, flashing 13 comprises a waterproof sealing strip of the reverse type (as shown in fig. 1). The waterproof sealing strip is adhered to the first bending part 113 for sealing the gap between the edge of the cover plate 12 and the main body part 112. So set up, waterproof 13 can seal the gap between the edge of apron 12 and the main part 112, can strengthen the leakproofness between the edge of apron 12 and the main part 112, prevents in the water entering main part 112 in the outside to promote the waterproof ability of control box 10, improve security and user experience, and satisfy the requirement of high protection level.

In some embodiments, the material of the body portion 112 is aluminum. The box body 11 is made of aluminum, the main body 112 is made of aluminum, and the aluminum is light in weight, high in strength, low in cost, safe and environment-friendly. In some embodiments, the thickness of the body portion 112 may range from 1mm to 1.4 mm. For example, the thickness of the sheet metal part may be 1mm or 1.1mm or 1.2mm or 1.3mm or 1.4mm, etc., and in the present embodiment, the thickness of the main body part 112 is preferably 1.2 mm. With such an arrangement, the mass of the case 11 can be reduced, in addition to ensuring the rigidity of the case 11 by selecting an appropriate thickness.

In some embodiments, the cover plate 12 is provided with a plurality of first positioning holes 121, and the plurality of first positioning holes 121 are provided at the edge of the cover plate 12. In some embodiments, the box 11 is provided with a plurality of second positioning holes 116 corresponding to the plurality of first positioning holes 121, and the plurality of second positioning holes 116 correspond to the plurality of first positioning holes 121 in position. In order to prevent external water from entering the main body 112 from the edge of the cover plate 12, the plurality of first positioning holes 121 and the plurality of second positioning holes 116 are disposed outside the waterproof member 13, so that the waterproof member 13 can prevent external water from entering the main body 112 from the edge of the cover plate 12, thereby improving the waterproof capability of the control box 10. In some embodiments, the control box 10 includes a plurality of first fixing members 16, and the plurality of first fixing members 16 pass through the plurality of first positioning holes 121 and the plurality of second positioning holes 116 to fix the cover plate 12 to the opening 115 of the box body 11. In some embodiments, the first fastener 16 may be a bolt, a latch, a retaining pin, or the like. In the present embodiment, the first fixing member 16 is a bolt. When the equipment apron 12, a plurality of bolts pass first locating hole 121 and a plurality of second locating hole 116, lock apron 12 in main part 112, can prevent so that outside water from entering into main part 112 from the edge of apron 12 in, guarantee the inside of outside water difficult entering main part 112 to can promote the waterproof ability of control box 10, improve security and user experience, and this kind of assembly mode accords with high protection level requirement.

In some embodiments, the case 11 further includes a second bent portion 117. In some embodiments, the second bending portion 117 is bent at an edge of the opening 115 of the main body 112, and the plurality of second positioning holes 116 are disposed at the second bending portion 117, wherein the first bending portion 113 is used for attaching the waterproof member 13, the waterproof member 13 is used for sealing a gap between an edge of the cover 12 and the main body 112, and the second bending portion 117 is used for fixing the cover 12, so that the second bending portion 117 is closer to the edge of the main body 112 (as shown in fig. 3) relative to the first bending portion 113, thereby preventing external water from entering the main body 112 from the edge of the cover 12, and ensuring the sealing performance of the box 11, thereby improving the waterproof performance of the control box 10, improving safety and user experience, and meeting the requirement of high protection level. In some embodiments, the second bent portion 117 extends from the edge of the main body portion 112 to the outside of the opening 115. In some embodiments, the second bent portion 117 is formed separately from the main body portion 112, and the second bent portion 117 is connected to the edge of the main body portion 112 by full welding (as shown in fig. 6). When the equipment apron 12, pass first locating hole 121 and a plurality of second locating hole 116 through a plurality of bolts, lock apron 12 in the second kink 117 of main part 112, can guarantee the inside of the difficult entering main part 112 of outside water, and guarantee that apron 12 is fixed in the stability of main part 112, can prevent that outside water from getting into in the main part 112 of box 11, thereby can promote the waterproof ability of control box 10, improve security and user experience, and this kind of equipment mode accords with high protection level requirement, safety and reliability.

In some embodiments, the heat dissipation assembly 14 is provided with a plurality of third positioning holes 141, and the plurality of third positioning holes 141 are provided at the edge of the heat dissipation assembly 14 (as shown in fig. 7). In some embodiments, the box 11 is provided with a plurality of positioning pillars 118 corresponding to the plurality of third positioning holes 141, and the positions of the plurality of positioning pillars 118 correspond to the plurality of third positioning holes 141 one to one. In some embodiments, a waterproof sealant (not shown) is disposed between the box 11 and the positioning pillars 118, for example, the waterproof sealant may be applied to the roots of the positioning pillars 118. The control box 10 includes a plurality of second fixing members 17, and the plurality of second fixing members 17 pass through the plurality of third positioning holes 141, and are assembled with the plurality of positioning posts 118 in a matching manner, so as to fix the heat dissipation assembly 14 outside the box body 11. In some embodiments, the second fixing member 17 may be a nut, a locking member, or the like. In this embodiment, the second fixing member 17 is a nut, the positioning pillar 118 can be a stud, and the inner wall of the nut and the outer wall of the stud are respectively provided with matching threads. Before assembling the heat dissipation assembly 14, the root of the positioning post 118 is coated with waterproof sealant, and then a press riveting operation is performed, so that the waterproof sealant is disposed between the box body 11 and the plurality of positioning posts 118, and when assembling the heat dissipation assembly 14, the plurality of second fixing members 17 pass through the plurality of third positioning holes 141 to be matched and assembled with the plurality of positioning posts 118, so as to lock the heat dissipation assembly 14 outside the box body 11 (as shown in fig. 8). By the arrangement, the sealing performance between the box body 11 and the positioning columns 118 can be ensured, and no water leakage risk is caused between the box body 11 and the positioning columns 118. In some embodiments, a waterproof sealant (not shown) is provided in the gap between the edge of the heat sink assembly 14 and the case 11. So set up, further strengthen the leakproofness between radiator unit 14 and the box 11, avoid outside water to enter into box 11 from radiator unit 14's edge, guarantee box 11's leakproofness, improve control box 10's waterproof ability, and accord with high protection level requirement, safe and reliable through this kind of assembled mode.

In some embodiments, the control box 10 is further provided with a waterproof connector and/or a waterproof arrowhead 18 (shown in FIG. 1) connected to the box body 11 and extending outside of the box body 11. In some embodiments, the control box 10 is provided with a waterproof connector connected with the box body 11 and extending to the outside of the box body 11, for connecting electrical components, transmitting current or signals, and having waterproof capability. In other embodiments, the control box 10 is provided with a waterproof arrowhead connected to the box body 11 and extending to the outside of the box body 11 for fixing and protecting the wires and cables of the electrical components, and has waterproof capability. In other embodiments, the control box 10 is further provided with a waterproof connector and a waterproof arrowhead 18 connected to the box body 11 and extending outside the box body 11. In the embodiment shown in fig. 1, the waterproof connector and the waterproof pueraria lobata head 18 are respectively arranged on one side of the box body 11, have IP67 waterproof capability, meet the requirement of high protection level, and improve the safety and the user experience.

In some embodiments, the control box 10 further includes an electronic control assembly 19 assembled in the receiving cavity 15 (as shown in fig. 1). In some embodiments, the electronic control component 19 includes a high voltage power circuit 191 and a low voltage power circuit 192, the voltage output by the high voltage power circuit 191 is higher than the voltage output by the low voltage power circuit 192, and the high voltage power circuit 191 is at least partially disposed on the heat dissipation component 14 (as shown in fig. 1). Since the refrigerator car needs two power supply modes (for example, including a high-voltage power supply circuit or a mains supply 3-phase AC 380V), the input power of the high-voltage power supply circuit 191 of the refrigerator set of the refrigerator car is much larger than that of a common refrigerator set, and the input power is up to 10KW, which puts higher requirements on heat dissipation problems. Therefore, the high voltage power circuit 191 is at least partially disposed in the heat sink 14, so that heat dissipation of the high voltage power circuit 191 can be reduced, and safety is improved, and the space in the case 11 can be saved by disposing the high voltage power circuit 191 at least partially in the heat sink 14.

In some embodiments, the heat dissipating assembly 14 includes a heat dissipating surface 142, the heat dissipating surface 142 is disposed toward the outside of the case 11 (as shown in fig. 6), and the high-voltage power supply circuit 191 includes a dc diode and a three-phase rectifier circuit, and the dc diode and the three-phase rectifier circuit are disposed on a side facing away from the heat dissipating surface 142. Because the input power of the high-voltage power supply circuit 191 of the refrigerating unit of the refrigerator car is much larger than that of the common refrigerating unit, the input power is up to 10KW, and higher requirements are provided for the heat dissipation problem, the direct-current diode and the three-phase rectifying circuit are arranged on the surface back to the heat dissipation surface 142, and the heat dissipation problem of the power supply circuit of the refrigerator car can be effectively solved.

In some embodiments, the electronic control assembly 19 includes an electronic control Board 193 assembled in the receiving cavity 15 (as shown in fig. 1), and the electronic control Board 193 may be a Printed Circuit Board (PCB) that serves as a carrier for electrical connection of electrical components, and has high integration, and is convenient for maintenance and replacement. In some embodiments, the electronic control assembly 19 includes a plurality of low voltage power supply circuits 192 for providing different power supplies, and the plurality of low voltage power supply circuits 192 are integrated on the same electronic control board 193 (shown in fig. 1). Because the normal operating of the refrigerating unit of refrigerator car needs a plurality of low voltage power supply circuit 192 must work in coordination, and a plurality of low voltage power supply circuit 192 are connected to different pencil, inconvenient maintenance, and connect different pencil, and occupation space is big, has the potential safety hazard. In the embodiment, the plurality of low-voltage power supply circuits 192 for providing different power supplies are integrated on the same electric control board 193, so that the plurality of low-voltage power supply circuits 192 can be processed in a centralized manner, the maintenance is convenient, the integration level is high, the arrangement space of the wiring harness is reduced, and the wiring harness is safe and reliable.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A control box of a refrigerator car, comprising:

a case body provided with an assembly through hole;

the cover plate is assembled on the box body, the box body and the cover plate are assembled to form a containing cavity, and the containing cavity is communicated with the assembling through hole;

the waterproof piece is assembled on the box body and is arranged between the edge of the cover plate and the box body in a sealing mode; and

and the heat dissipation assembly is assembled in the assembly through hole, at least part of the heat dissipation assembly is positioned outside the box body, and the heat dissipation assembly is hermetically connected with the box body so as to isolate the assembly through hole from the outside.

2. The control box of claim 1, wherein the box body comprises a main body portion and a first bending portion, the main body portion comprises an opening, the cover plate covers the opening, the first bending portion is bent at an edge of the opening of the main body portion, the waterproof member is laid on the first bending portion, and the cover plate is pressed against the waterproof member.

3. The control box of claim 2, wherein the cover plate is provided with a plurality of first positioning holes, the box body is provided with a plurality of second positioning holes corresponding to the plurality of first positioning holes, the plurality of first positioning holes and the plurality of second positioning holes are provided on the outer side of the waterproof member, and the control box comprises a plurality of first fixing members, and the plurality of first fixing members pass through the plurality of first positioning holes and the plurality of second positioning holes to fix the cover plate to the opening of the box body.

4. The control box according to claim 3, wherein the box body further comprises a second bending portion, the second bending portion is bent at an edge of the opening of the main body, and the plurality of second positioning holes are formed in the second bending portion.

5. The control box according to claim 4, wherein the first bent portion is bent and extended from an edge of the main body portion to an inside of the opening, and the second bent portion is bent and extended from an edge of the main body portion to an outside of the opening; and/or

The first bending part is integrally formed with the main body part, the first bending part is bent from the edge of the main body part, a bending process hole is formed between the first bending part and the edge of the main body part, and the bending process hole is filled with soldering tin which seals the bending process hole; and/or

The second bending part and the main body part are formed in a split mode, and the second bending part is in full-welding connection with the edge of the main body part.

6. The control box of claim 1, wherein the heat dissipation assembly has a plurality of third positioning holes, the box has a plurality of positioning posts corresponding to the plurality of third positioning holes, and waterproof sealant is disposed between the box and the plurality of positioning posts, the control box includes a plurality of second fixing members, and the plurality of second fixing members pass through the plurality of third positioning holes and are assembled with the plurality of positioning posts to fix the heat dissipation assembly outside the box.

7. The control box of claim 1, further comprising an electrical control assembly assembled within the receiving cavity; the electric control assembly comprises a high-voltage power supply circuit and a low-voltage power supply circuit, the voltage output by the high-voltage power supply circuit is higher than the voltage output by the low-voltage power supply circuit, and at least part of the high-voltage power supply circuit is arranged on the heat dissipation assembly.

8. The control box of claim 7, wherein the heat dissipation assembly comprises a heat dissipation surface, the heat dissipation surface is arranged towards the outside of the box body, the high-voltage power supply circuit comprises a direct current diode and a three-phase rectification circuit, and the direct current diode and the three-phase rectification circuit are arranged on the surface opposite to the heat dissipation surface; and/or

The electric control assembly comprises an electric control board assembled in the accommodating cavity, the electric control assembly comprises a plurality of low-voltage power supply circuits for providing different power supplies, and the low-voltage power supply circuits are integrated on the same electric control board.

9. The control box of claim 1, wherein the flashing member comprises a waterproof seal of the swage type; and/or

Waterproof sealant is arranged in a gap between the edge of the heat dissipation assembly and the box body; and/or

The control box is also provided with a waterproof connector and/or a waterproof arrowhead which is connected with the box body and extends out of the box body; and/or

The box body comprises a plurality of butt joint edges, and at least two butt joint edges which are mutually spliced are in full-weld connection.

10. A refrigerator car characterized by comprising the control box of the refrigerator car as claimed in any one of claims 1 to 9.

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