New energy charging pile transformer heat dissipation aluminum shell and assembly method thereof

Abstract

The present invention belongs to the technical field of production of accessories for new energy charging piles, and specifically relates to a heat dissipation aluminum shell of a new energy charging pile transformer and an assembly method thereof. The present invention includes a transformer shell body, a transformer shell cover, a heat dissipation coil, a self-driven heat pipe, a heat dissipation fin group, a groove-type pressure-bearing heat dissipation pipe, a micro-inducing fan, a pressure-bearing guide plate, a movable cross bar and a disturbance balloon. The outer side of the transformer shell body is equipped with a heat dissipation coil and a heat dissipation fin group, and the inner side of the transformer shell body is equipped with a self-driven heat pipe connected to both ends of the heat dissipation coil. Two groove-type pressure-bearing heat dissipation pipes are symmetrically installed on the inner side of the bottom plate of the transformer shell body near both ends, and pressure-bearing guide plates are symmetrically installed on both sides of the groove-type pressure-bearing heat dissipation pipe. There is a movable cross bar between the two relative pressure-bearing guide plates for common vertical sliding restriction, and there is a disturbance balloon on the movable cross bar for activity restriction. The present invention has a reasonable structural design, and has the advantages of efficient internal and external heat dissipation, low noise, and automatic temperature equalization.

Description

Technical Field

[0001] The present invention belongs to the technical field of production of accessories for new energy charging piles, and in particular relates to a heat dissipating aluminum shell of a new energy charging pile transformer and an assembly method thereof. Background Art

[0002] The transformer in the new energy charging pile plays a vital role, and its main functions are reflected in the following aspects: 1) Voltage conversion: The transformer is the core component of the charging pile, responsible for converting the voltage of the high-voltage power grid into low-voltage DC power suitable for electric vehicle charging. This process ensures that the power can be transmitted to the battery of the electric vehicle more safely and efficiently. 2) Current adaptation: The transformer can adjust the current to meet the charging needs of different electric vehicle batteries. This adaptability avoids charging problems caused by overcurrent or undercurrent, and ensures the stability and efficiency of the charging process. 3) Stable voltage: The transformer can ensure that the voltage provided by the charging pile is stable and prevent voltage fluctuations from damaging the charging equipment and electric vehicle batteries. Stable voltage helps to extend the battery life and improve charging efficiency. 4) Safety protection: The transformer has multiple protection functions, such as overload protection, short-circuit protection, etc. During the charging process, if an abnormal situation occurs, the transformer can respond quickly and cut off the circuit, thereby protecting the safety of the charging pile and the electric vehicle. 5) Energy saving and efficiency improvement: By reducing the voltage of the high-voltage transmission line to low voltage, the transformer reduces the loss of energy during transmission and achieves the purpose of energy saving. At the same time, efficient transformer design also helps shorten charging time and improve users' charging experience.

[0003] The existing aluminum shell design of the heat dissipation of the transformer of the new energy charging pile is not reasonable enough, and there are many shortcomings in use. First, the noise generally comes from the transformer itself and the heat dissipation fan, especially the transformer has high requirements for heat dissipation, so the heat dissipation fan needs to use a larger power fan to ensure the heat dissipation effect, which leads to serious noise pollution and affects the surrounding residents; second, the transformer assembly is generally installed on the lower side of the transformer casing cover, and the high-voltage bushing and the low-voltage bushing are installed on the upper side of the transformer casing cover. There is no pressure-bearing structure inside the transformer casing, which makes the transformer casing cover easy to deform due to long-term load-bearing; third, the insulating oil in the transformer is basically static and passive when dissipating heat. After long-term use, the insulating oil may settle and stratify due to long-term stillness or slow liquid flow. The upper layer of the insulating oil has a smaller density and the lower layer has a larger density. The upper and lower layers of the insulating oil have different temperatures, which makes the transformer electrical components inside the transformer casing dissipate heat unevenly, which may cause the electrical components to burn due to excessive local temperature.

[0004] In view of this, the inventor hopes to provide a new energy charging pile transformer heat dissipation aluminum shell and an assembly method thereof. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art and to provide a new energy charging pile transformer heat dissipation aluminum shell and an assembly method thereof.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a heat dissipation aluminum shell of a new energy charging pile transformer, comprising a transformer shell body, a transformer shell cover, a heat dissipation coil, a self-driven heat pipe, a heat dissipation fin group, a groove-type pressure-bearing heat dissipation pipe, a micro-induced ventilator, a pressure-bearing guide plate, a movable cross bar and a disturbance balloon. The transformer shell body as a whole is a rectangular parallelepiped structure with an upper end opening. The four corners of the transformer shell cover are sealed and connected to the transformer shell body by fastening screws. The outer side of the transformer shell body is equipped with a heat dissipation coil and a heat dissipation fin group. The inner side of the transformer shell body is equipped with a self-driven heat pipe connected to both ends of the heat dissipation coil. Two groove-type pressure-bearing heat dissipation pipes are symmetrically installed near both ends on the inner side of the bottom plate of the transformer shell body. The inner cavities of the two side ends of the groove-type pressure-bearing heat dissipation pipe are connected to the outside world, and a micro-induced ventilator is installed in the inner cavity of one of the side ends. The bottom plate of the transformer shell body is located on both sides of the groove-type pressure-bearing heat dissipation pipe and is symmetrically equipped with two pressure-bearing guide plates. A movable cross bar is provided between the two opposite pressure-bearing guide plates for common vertical sliding restriction, and the movable cross bar has a disturbance balloon for activity restriction.

[0008] Furthermore, in the above-mentioned new energy charging pile transformer heat dissipation aluminum shell, a transformer assembly is installed on the lower side of the transformer shell cover, the vertical height value of the transformer assembly is smaller than the depth value of the inner cavity of the transformer shell body, the lateral length value of the transformer assembly is smaller than the spacing value between the two groove-shaped pressure-bearing heat dissipation pipes, and a high-voltage bushing and a low-voltage bushing are installed on the upper side of the transformer shell cover; fastening through holes for facilitating the installation of fastening screws are provided at the four corners of the transformer shell cover.

[0009] Furthermore, in the above-mentioned aluminum shell for heat dissipation of the transformer of the new energy charging pile, the transformer shell includes an aluminum shell body, and columns are provided near the four corners of the inner cavity of the aluminum shell body. The top of the column is provided with fastening screw holes for facilitating the installation of fastening screws. The aluminum shell body is located on at least one narrow side panel and is provided with a feed inlet and a discharge port respectively connected to the two ends of the heat dissipation coil. The aluminum shell body is located on the bottom plate and is symmetrically provided with two groups of air guides connected to the inner cavity of the grooved pressure-bearing heat dissipation pipe. The aluminum shell body is located on two wide side panels and is respectively stamped with a plurality of rows of hollow baffles protruding inwardly.

[0010] Furthermore, in the above-mentioned heat dissipation aluminum shell of the new energy charging pile transformer, the heat dissipation coil includes a plurality of coil parts arranged in parallel, and the two adjacent coil parts are connected by a vertical pipe part. The first one-way valve is arranged near the feed port of the bottom coil part, and the second one-way valve is arranged near the discharge port of the top coil part.

[0011] Furthermore, in the above-mentioned new energy charging pile transformer heat dissipation aluminum shell, the self-driven heat pipe and the heat dissipation coil are jointly filled with a low-boiling point working fluid with an evaporation function. The working fluid can stably circulate between evaporation, vaporization, condensation, liquefaction, and reflux. The heat is transferred through the vapor and liquid phase change of the working fluid, so that the thermal resistance is very small. Therefore, it has good thermal conductivity and can continuously dissipate heat from the transformer insulating oil.

[0012] Furthermore, in the above-mentioned aluminum heat dissipation shell of the new energy charging pile transformer, the heat dissipation fin group includes a mounting base plate and a plurality of fin plates arranged side by side thereon, and the fin plates are provided with avoidance openings for avoiding the heat dissipation coil and heat dissipation holes for ventilation and heat dissipation.

[0013] Furthermore, in the above-mentioned aluminum shell for heat dissipation of the new energy charging pile transformer, the inner cavity cross-section of the grooved pressure-bearing heat dissipation pipe is a rectangular structure, and the top end surface of the belly tube portion of the grooved pressure-bearing heat dissipation pipe abuts against the inner side surface of the transformer outer shell cover after assembly.

[0014] Furthermore, in the above-mentioned new energy charging pile transformer heat dissipation aluminum shell, the pressure-bearing guide plate includes a guide plate body, the top end surface of the guide plate body is abutted against the inner side surface of the transformer outer shell cover after assembly, and a vertical through groove is opened inside the guide plate body, and a vertical slide groove is opened inward on the inner wall of the vertical through groove, and the sliding limit in the vertical slide groove is provided with a limit slide fixed to the end of the movable cross bar.

[0015] Furthermore, in the above-mentioned aluminum shell for heat dissipation of the transformer of the new energy charging pile, the disturbance balloon includes a central ceramic slip ring, an airbag ring and a metal disturbance sheet. The central ceramic slip ring is sleeved on the movable cross bar. The airbag ring is a sealing silicone sleeve installed on the outside of the central ceramic slip ring. The interior of the airbag ring is filled with helium. A plurality of circles of metal disturbance sheets are installed on the outer periphery of the airbag ring. The spacing between two adjacent metal disturbance sheets cooperates with the spacing between two adjacent hollow baffles in the same column.

[0016] The present invention also provides a method for assembling a heat dissipation aluminum housing of a new energy charging pile transformer, comprising the following steps:

[0017] S1. A grooved pressure-bearing heat dissipation pipe and a pressure-bearing guide plate are welded and installed on the bottom plate of the transformer shell. The two open ends of the grooved pressure-bearing heat dissipation pipe are connected to the corresponding air guide ports. A micro-induced fan is pre-installed in one open end of the grooved pressure-bearing heat dissipation pipe. A movable cross bar is pre-installed between the two opposite pressure-bearing guide plates. Some interference balloons are pre-pierced in the movable cross bar.

[0018] S2. A self-driven heat pipe is welded and installed on the inner side of the narrow side plate of the transformer shell, a heat dissipation coil and a heat dissipation fin group are welded and installed on the outer side of the transformer shell, and a low-boiling-point working fluid with an evaporation function is filled in the heat dissipation coil and the self-driven heat pipe;

[0019] S3. Add transformer insulating oil into the transformer shell, and seal and install the transformer shell cover with the transformer assembly, high-voltage bushing and low-voltage bushing on the upper end of the transformer shell by tightening screws.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention utilizes a heat dissipation coil, a self-driven heat pipe, and a heat dissipation fin group to form an external heat dissipation system; when the transformer insulating oil in the transformer shell body is heated up, the low-boiling point working fluid in the self-driven heat pipe boils and evaporates into a gaseous state, so that the air pressure in the self-driven heat pipe increases. At this time, a pressure difference is generated between the self-driven heat pipe and the heat dissipation coil. Under the action of the pressure difference, the gaseous working fluid at the top of the self-driven heat pipe enters the heat dissipation coil through the second one-way valve in turn, and the working fluid in the heat dissipation coil is pushed to be replenished to the top of the self-driven heat pipe through the first one-way valve. The gaseous working fluid will be cooled into liquid again under the heat dissipation effect of the heat dissipation coil and the heat dissipation fin group. In this way, the working fluid can be stably circulated between evaporation, vaporization, condensation, liquefaction, and reflux. The heat transfer is carried out through the vapor and liquid phase change of the working fluid, so that the thermal resistance is very small. Therefore, it has good thermal conductivity and can continuously dissipate heat for the transformer insulating oil.

[0022] 2. The present invention uses a groove-type pressure-bearing heat dissipation pipe and a micro-induced induced fan to form a built-in heat dissipation system. The groove-type pressure-bearing heat dissipation pipe can absorb the heat of the transformer insulating oil and heat the air in its inner cavity. The micro-induced induced fan is used to introduce fresh air into the inner cavity of the groove-type pressure-bearing heat dissipation pipe and discharge the hot air. In this way, the transformer insulating oil can be cooled from the inside, and the overall noise is relatively low. In order to improve the cooling efficiency, a baffle can be set on the groove-type pressure-bearing heat dissipation pipe to increase the flow of fresh air in its inner cavity. In addition, the groove-type pressure-bearing heat dissipation pipe can be used as a pressure-bearing part to improve the pressure-bearing capacity of the transformer outer shell cover and prevent the transformer outer shell cover from deformation.

[0023] 3. The present invention utilizes a pressure-bearing guide plate, a movable cross bar and a disturbance balloon to form a disturbance temperature equalization system. The disturbance balloon absorbs the heat of the transformer insulating oil and expands. The volume of the disturbance balloon suspended in the transformer insulating oil increases, so that the buoyancy also increases. When the overall buoyancy of each disturbance balloon is greater than the gravity of the disturbance balloon itself and the movable cross bar, the disturbance balloon will drive the movable cross bar to slide upward. When the disturbance balloon slides to the upper part, it will transfer its own heat to the surrounding transformer insulating oil whose temperature is lower than its own, thereby bringing the heat of the lower layer of high-temperature transformer insulating oil to the upper layer, accelerating the heat equalization of the transformer insulating oil. After the temperature of the disturbance balloon drops, it will drop again and drop to the lower layer of high-temperature transformer insulating oil to continue absorbing heat. At the same time, the metal disturbance piece (relative to the gear) and the hollow baffle (relative to the rack) form a gear-rack meshing relationship, so that the disturbance balloon will flip itself in the process of reciprocating up and down, further accelerating the heat equalization effect of the transformer insulating oil, preventing the insulating oil from settling and stratifying due to long-term static or slow flow, and preventing heat from accumulating in the surrounding area of ​​the transformer assembly, allowing the heat to be quickly transferred to the surrounding insulating oil to avoid heat concentration and cause the transformer assembly to be overloaded and burned. In addition, the pressure guide plate can be used as a pressure-bearing part to improve the pressure-bearing capacity of the transformer housing cover and prevent the transformer housing cover from deformation.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of the heat dissipation aluminum housing of the new energy charging pile transformer of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the transformer housing and its upper components in the present invention;

[0028] Figure 3 A schematic top view of the transformer housing and its upper components in the present invention;

[0029] Figure 4 It is a schematic structural diagram of the transformer housing in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the transformer shell body after being partially separated in the present invention;

[0031] Figure 6It is a structural schematic diagram of the heat dissipation coil in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the heat dissipation fin group in the present invention;

[0033] Figure 8 It is a schematic diagram of assembling the groove-type pressure-bearing heat dissipation pipe and the pressure-bearing guide plate in the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the pressure-bearing guide plate, the movable cross bar and the disturbance balloon in the present invention;

[0035] Fig.10 It is a partial enlarged schematic diagram of the pressure-bearing guide plate in the present invention;

[0036] Fig.11 It is a schematic diagram of the structure of the disturbance balloon in the present invention;

[0037] Fig.12 It is a schematic diagram of the position of the micro induced-air fan in the present invention;

[0038] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0039] 1-transformer shell, 101-aluminum shell body, 102-column, 103-fastening screw hole, 104-feeding port, 105-discharging port, 106-air guide port, 107-hollow baffle;

[0040] 2- Transformer housing cover;

[0041] 3-heat dissipation coil, 301-coil part, 302-vertical pipe part, 303-first one-way valve, 304-second one-way valve;

[0042] 4-Self-driven heat pipe;

[0043] 5-heat dissipation fin assembly, 501-mounting base plate, 502-fin plate, 503-avoidance opening, 504-heat dissipation hole;

[0044] 6-slot type pressure heat dissipation pipe;

[0045] 7-pressure guide plate, 701-guide plate body, 702-vertical through groove, 703-vertical slide groove, 704-limiting slide plate;

[0046] 8- movable cross bar;

[0047] 9-disturbance balloon, 901-center ceramic slip ring, 902-airbag ring, 903-metal disturbance sheet;

[0048] 10-Micro induced fan. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] like Figure 1-Figure 3 As shown, this embodiment provides a heat dissipation aluminum shell for a new energy charging pile transformer, including a transformer shell body 1, a transformer shell cover 2, a heat dissipation coil 3, a self-driven heat pipe 4, a heat dissipation fin group 5, a groove-type pressure-bearing heat dissipation pipe 6, a micro-induced ventilator 10, a pressure-bearing guide plate 7, a movable cross bar 8 and a disturbance balloon 9. The transformer shell body 1 is an overall rectangular structure with an open upper end, and the four corners of the transformer shell cover 2 are sealed and connected to the transformer shell body 1 by fastening screws. The heat dissipation coil 3 and the heat dissipation fin group 5 are installed on the outside of the transformer shell body 1, and the self-driven heat pipe 4 connected to the two ends of the heat dissipation coil 3 is installed on the inside of the transformer shell body 1. Two groove-type pressure-bearing heat dissipation pipes 6 are symmetrically installed near the two ends on the inner side of the bottom plate of the transformer shell body 1. The inner cavities at the two side ends of the groove-type pressure-bearing heat dissipation pipe 6 are connected to the outside, and a micro-induced ventilator 10 is installed in the inner cavity of one of the side ends, as shown in FIG. Fig.12 The bottom plate of the transformer housing 1 is located on both sides of the groove-shaped pressure-bearing heat dissipation pipe 6 and symmetrically installed with two pressure-bearing guide plates 7. A movable crossbar 8 is provided between the two opposite pressure-bearing guide plates 7 for common vertical sliding restriction. The movable crossbar 8 has a movable balloon 9 for limiting the movement.

[0051] In this embodiment, a transformer assembly is installed on the lower side of the transformer housing cover 2, the vertical height of the transformer assembly is less than the depth of the inner cavity of the transformer housing body 1, the horizontal length of the transformer assembly is less than the spacing between the two groove-shaped pressure-bearing heat dissipation pipes 6, and a high-voltage bushing and a low-voltage bushing are installed on the upper side of the transformer housing cover 2; fastening through holes for facilitating the installation of fastening screws are provided at the four corners of the transformer housing cover 2. The material of the transformer housing cover 2 is aluminum.

[0052] like Figure 4 and Figure 5 As shown, the transformer housing 1 includes an aluminum housing body 101, and columns 102 are provided near the four corners of the inner cavity of the aluminum housing body 101, and fastening screw holes 103 are provided at the top of the columns 102 for convenient installation of fastening screws. The aluminum housing body 101 is provided with a feed inlet 104 and a discharge port 105 respectively connected to the two ends of the heat dissipation coil 3 on at least one narrow side plate, and the aluminum housing body 101 is provided with two groups of air guides 106 symmetrically connected to the inner cavity of the groove-shaped pressure-bearing heat dissipation tube 6 on the bottom plate, and the aluminum housing body 101 is provided with a plurality of rows of hollow baffles 107 protruding inwardly by stamping on the two wide side plates.

[0053] like Figure 6 As shown, the heat dissipation coil 3 includes a plurality of coil sections 301 arranged in parallel, and two adjacent coil sections 301 are connected via a vertical pipe section 302. The first one-way valve 303 is provided near the feed inlet 104 of the bottom coil section 301, and the second one-way valve 304 is provided near the feed outlet 105 of the top coil section.

[0054] In this embodiment, the self-driven heat pipe 4 and the heat dissipation coil 3 are both filled with a low-boiling-point working fluid having an evaporation function, and the filling rate is controlled at 30-40%.

[0055] like Figure 7 As shown, the heat dissipation fin group 5 includes a mounting base plate 501 and a plurality of fin plates 502 arranged side by side thereon. The fin plates 502 are provided with avoidance openings 503 for avoiding the heat dissipation coil 3 and heat dissipation holes 504 for ventilation and heat dissipation.

[0056] In this embodiment, the inner cross section of the groove-shaped pressure-bearing heat dissipation pipe 6 is a rectangular structure, and the top end surface of the belly tube portion of the groove-shaped pressure-bearing heat dissipation pipe 6 abuts against the inner side surface of the transformer housing cover 2 after assembly.

[0057] like Figure 8-Figure 10 As shown, the pressure guide plate 7 includes a guide plate body 701, the top surface of which abuts against the inner side surface of the assembled transformer housing cover 2. A vertical through groove 702 is provided inside the guide plate body 701, and a vertical slide groove 703 is provided inwardly on the inner wall of the vertical through groove 702. A limit slide plate 704 fixed to the end of the movable cross bar 8 is provided in the vertical slide groove 703 to limit the sliding movement.

[0058] like Fig.11 As shown, the disturbance balloon 9 includes a central ceramic slip ring 901, an airbag ring 902 and a metal disturbance sheet 903. The central ceramic slip ring 901 is sleeved on the movable crossbar 8. The airbag ring 902 is a sealing silicone sleeve installed on the outside of the central ceramic slip ring 901. The inside of the airbag ring 902 is filled with helium. A plurality of metal disturbance sheets 903 are installed on the periphery of the airbag ring 902. The spacing between two adjacent metal disturbance sheets 903 matches the spacing between two adjacent hollow baffles 107 in the same row. In order to prevent the disturbance balloon 9 from axially offsetting on the movable crossbar 8, an open clip for limiting the axial sliding of the central ceramic slip ring 901 can be installed on the movable crossbar 8.

[0059] This embodiment also provides a method for assembling a heat dissipation aluminum housing of a new energy charging pile transformer, comprising the following steps:

[0060] S1. A grooved pressure-bearing heat dissipation pipe 6 and a pressure-bearing guide plate 7 are welded and installed on the bottom plate of the transformer shell 1. The two open ends of the grooved pressure-bearing heat dissipation pipe 6 are connected to the corresponding air guide ports 106. A micro fan 10 is pre-installed in one open end of the grooved pressure-bearing heat dissipation pipe 6. A movable crossbar 8 is pre-installed between two opposing pressure-bearing guide plates 7. Some interference balloons 9 are pre-pierced in the movable crossbar 8.

[0061] S2, welding and installing the self-driven heat pipe 4 on the inner side of the narrow side plate of the transformer shell 1, welding and installing the heat dissipation coil 3 and the heat dissipation fin group 5 on the outer side of the transformer shell 1, and filling the heat dissipation coil 3 and the self-driven heat pipe 4 with a low boiling point working fluid having an evaporation function;

[0062] S3. Add transformer insulating oil into the transformer shell body 1, and seal and install the transformer shell cover 2 with the transformer assembly, high-voltage bushing and low-voltage bushing on the upper end of the transformer shell body 1 by tightening screws.

[0063] The heat dissipation aluminum housing of the new energy charging pile transformer provided in this embodiment has the advantage of efficient heat dissipation, and its heat dissipation channels mainly include three:

[0064] 1) An external heat dissipation system is formed by using a heat dissipation coil 3, a self-driven heat pipe 4, and a heat dissipation fin group 5; when the transformer insulating oil in the transformer shell body 1 is heated up, the low-boiling-point working fluid in the self-driven heat pipe 4 boils and evaporates into a gas state, so that the air pressure in the self-driven heat pipe 4 increases. At this time, a pressure difference is generated between the self-driven heat pipe 4 and the heat dissipation coil 3. Under the action of the pressure difference, the gaseous working fluid at the top of the self-driven heat pipe 4 enters the heat dissipation coil 3 through the second one-way valve 304 in turn, and the working fluid in the heat dissipation coil 3 is pushed to be replenished to the top of the self-driven heat pipe 4 through the first one-way valve 303. The gaseous working fluid will be cooled into a liquid again under the heat dissipation effect of the heat dissipation coil 3 and the heat dissipation fin group 5. In this way, the working fluid can be stably circulated between evaporation, vaporization, condensation, liquefaction, and reflux. The heat transfer is carried out through the vapor and liquid phase change of the working fluid, so that the thermal resistance is very small. Therefore, it has good thermal conductivity and can continuously dissipate heat for the transformer insulating oil.

[0065] 2) A built-in heat dissipation system is formed by using a groove-shaped pressure-bearing heat dissipation pipe 6 and a micro induced induced fan 10. The groove-shaped pressure-bearing heat dissipation pipe 6 can absorb the heat of the transformer insulating oil and heat the air in its inner cavity. The micro induced induced fan 10 is used to introduce fresh air into the inner cavity of the groove-shaped pressure-bearing heat dissipation pipe 6 and discharge the hot air. In this way, the transformer insulating oil can be cooled from the inside, and the overall noise is relatively low. In order to improve the cooling efficiency, a baffle can be set on the groove-shaped pressure-bearing heat dissipation pipe 6 to increase the flow of fresh air in its inner cavity. In addition, the groove-shaped pressure-bearing heat dissipation pipe 6 can be used as a pressure-bearing part to improve the pressure-bearing capacity of the transformer housing cover 2 and prevent the transformer housing cover 2 from deformation.

[0066] 3) A disturbance temperature equalization system is formed by using a pressure guide plate 7, a movable cross bar 8 and a disturbance balloon 9. The disturbance balloon 9 absorbs the heat of the transformer insulating oil and expands. The volume of the disturbance balloon 9 suspended in the transformer insulating oil increases, so that the buoyancy also increases. When the overall buoyancy of each disturbance balloon 9 is greater than the gravity of the disturbance balloon 9 itself and the movable cross bar 8, the disturbance balloon 9 will drive the movable cross bar 8 to slide upward. When the disturbance balloon 9 slides to the top, it will transfer its own heat to the surrounding transformer insulating oil whose temperature is lower than its own, thereby bringing the heat of the lower layer of high-temperature transformer insulating oil to the upper layer, accelerating the heat equalization of the transformer insulating oil. After the temperature of the disturbance balloon 9 drops, it will drop again and drop back to the lower layer of high-temperature transformer insulating oil to continue absorbing heat. At the same time, the metal disturbance piece 903 (relative to the gear) and the hollow baffle 107 (relative to the rack) form a gear-rack meshing relationship, so that the disturbance balloon 9 will flip itself in the process of reciprocating up and down, further accelerating the heat equalization effect of the transformer insulating oil, preventing the insulating oil from settling and stratifying due to long-term static or slow flow, and preventing heat from accumulating in the surrounding area of ​​the transformer component, allowing the heat to be quickly transferred to the surrounding insulating oil, avoiding heat concentration and causing the transformer component to be overloaded and burned. In addition, the pressure-bearing guide plate 7 can be used as a pressure-bearing part to improve the pressure-bearing capacity of the transformer housing cover 2 and prevent the transformer housing cover 2 from being deformed.

[0067] The preferred embodiments of the present invention disclosed above are only useful to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The heat dissipation aluminum shell of the new energy charging pile transformer is characterized by: The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation device is a heat dissipation device, and the heat dissipation device is a heat dissipation device. The heat dissipation coil comprises a plurality of coil sections arranged in parallel, two adjacent coil sections are connected by a vertical pipe section, a first one-way valve is arranged near the feed inlet of the bottom coil section, and a second one-way valve is arranged near the discharge outlet of the top coil section; The self-driven heat pipe and the heat dissipation coil are both filled with a low-boiling-point working fluid having an evaporation function; The heat dissipation fin group comprises a mounting base plate and a plurality of fin plates arranged side by side thereon, and the fin plates are provided with avoidance openings for avoiding the heat dissipation coil and heat dissipation holes for ventilation and heat dissipation.

2. The heat dissipation aluminum housing of the new energy charging pile transformer according to claim 1 is characterized in that: A transformer assembly is installed on the lower side of the transformer casing cover, the vertical height of the transformer assembly is smaller than the depth of the inner cavity of the transformer casing, the lateral length of the transformer assembly is smaller than the spacing between two groove-shaped pressure-bearing heat dissipation pipes, and a high-voltage bushing and a low-voltage bushing are installed on the upper side of the transformer casing cover; fastening through holes for facilitating the installation of fastening screws are provided at the four corners of the transformer casing cover.

3. The heat dissipation aluminum housing of the new energy charging pile transformer according to claim 2 is characterized in that: The transformer shell body includes an aluminum shell body, and columns are provided near the four corners of the inner cavity of the aluminum shell body. The top of the column is provided with a fastening screw hole for installing fastening screws. The aluminum shell body is located on at least one narrow side plate and is provided with a feed inlet and a discharge port respectively connected to the two ends of the heat dissipation coil. The aluminum shell body is located on a bottom plate and is symmetrically provided with two groups of air guide ports connected to the inner cavity of the groove-shaped pressure-bearing heat dissipation pipe. The aluminum shell body is located on two wide side plates and is respectively stamped with a plurality of rows of hollow baffles protruding inward.

4. The heat dissipation aluminum housing of the new energy charging pile transformer according to claim 3 is characterized in that: The inner cavity cross section of the groove-shaped pressure-bearing heat dissipation pipe is a rectangular structure, and the top end surface of the belly tube portion of the groove-shaped pressure-bearing heat dissipation pipe abuts against the inner side surface of the transformer housing cover after the assembled product.

5. The heat dissipation aluminum housing of the new energy charging pile transformer according to claim 4 is characterized in that: The pressure-bearing guide plate includes a guide plate body, the top end surface of the guide plate body abuts against the inner side surface of the transformer casing cover after assembly, a vertical through groove is opened inside the guide plate body, a vertical slide groove is opened inwardly on the inner wall of the vertical through groove, and a sliding limit slide fixed to the end of the movable cross bar is provided in the vertical slide groove.

6. The heat dissipation aluminum housing of the new energy charging pile transformer according to claim 5 is characterized in that: The disturbance balloon includes a central ceramic slip ring, an airbag ring and a metal disturbance sheet. The central ceramic slip ring is sleeved on a movable cross bar. The airbag ring is a sealing silicone sleeve installed on the outside of the central ceramic slip ring. The interior of the airbag ring is filled with helium. A plurality of metal disturbance sheets are installed on the outer periphery of the airbag ring. The spacing between two adjacent metal disturbance sheets matches the spacing between two adjacent hollow baffles in the same column.

7. The method for assembling the heat dissipating aluminum housing of the new energy charging pile transformer according to claim 6, characterized in that: The steps include: S1. A grooved pressure-bearing heat dissipation pipe and a pressure-bearing guide plate are welded and installed on the bottom plate of the transformer shell. The two open ends of the grooved pressure-bearing heat dissipation pipe are connected to the corresponding air guide ports. A micro-induced fan is pre-installed in one open end of the grooved pressure-bearing heat dissipation pipe. A movable cross bar is pre-installed between the two opposite pressure-bearing guide plates. Some interference balloons are pre-pierced in the movable cross bar. S2. A self-driven heat pipe is welded and installed on the inner side of the narrow side plate of the transformer shell, a heat dissipation coil and a heat dissipation fin group are welded and installed on the outer side of the transformer shell, and a low-boiling-point working fluid with an evaporation function is filled in the heat dissipation coil and the self-driven heat pipe; S3. Add transformer insulating oil into the transformer shell, and seal and install the transformer shell cover with the transformer assembly, high-voltage bushing and low-voltage bushing on the upper end of the transformer shell by tightening screws.

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