CN205583722U - Fill motor heat dissipation structure - Google Patents

Abstract

The utility model relates to a heat dissipation structure of a charging machine, which comprises a control main board, an aluminum shell of a transformer, an input connector, an output connector, a heat dissipation case and a protective cover arranged on the upper end of the heat dissipation case. A side control board, on which a number of electronic components are plugged respectively, and each electronic component is plugged into a side control board close to the aluminum shell of the transformer, and the front and rear sides of the aluminum shell of the transformer are respectively equipped with Connecting column, the lower side of the side control board is connected to the control main board, and the middle part is connected to the connecting column. The outer side of the side control board on one side is connected with an output connector and an input connector. A number of power tubes, a number of heat dissipation surfaces are provided on the outer wall of the aluminum shell of the transformer, and elastic pressing sheets connected with the aluminum shell of the transformer are arranged outside the power tubes, and the crimping surface of the power tubes is connected to the heat dissipation surface by the elastic pressing sheets. Snug connection.

Description

Heat dissipation structure of charger

technical field

The utility model relates to a charger, in particular to a heat dissipation structure of the charger.

Background technique

The electric vehicle uses the battery to provide electric energy to the electric motor to run, and then the electric energy stored in the battery is limited, so it is necessary to charge the battery frequently to ensure that the battery has sufficient power. The output voltage of the electric vehicle battery is generally 48 volts, 60 volts, 72 volts, 96 volts and other DC voltages, while the general city power is 85-260 volts of alternating current, and the battery must be charged with a voltage and current that conforms to the curve of the charged battery. , so the charger needs to process the input commercial power to obtain the power supply that meets the battery charging requirements. Because there are a large number of electronic devices in the charger, these electronic devices generate a lot of heat when they work, and most of the heat is mainly generated by the inductors, capacitors and power tubes in the charger. The shell has a hindering effect on the dissipation of heat. If the heat cannot be dissipated in time, it will affect the service life of the electronic device and shorten the service life of the charger. Therefore, the charger must be provided with a radiator, but the hot air is arranged on the circuit board and above the electronic device, and the heat generated by the electronic device can be guided to the radiator and dissipated by the radiator.

Contents of the invention

The purpose of this utility model is to provide a heat dissipation structure for a charger in order to avoid the deficiencies in the background technology.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a heat dissipation structure of a charging machine, including a control board, an aluminum shell of a transformer, an input connector, an output connector, a heat dissipation shell and a protective cover set on the upper end of the heat dissipation shell , there is at least one set of transformers inside the transformer aluminum shell, and the middle part of the control board is provided with an opening for accommodating the transformer aluminum shell. There are side control boards on each side, and a number of electronic components are plugged into the side control boards, and each electronic component is plugged into the side control board near the side of the aluminum shell of the transformer. Connecting columns are respectively arranged on the sides, the lower side of the side control board is connected with the control main board, the middle part is connected with the connecting column, the output connector and the input connector are connected to the outer side of the side control board on one side, and the control on the side of the port There are a number of power tubes on the main board, and a number of heat dissipation surfaces on the outer wall of the aluminum shell of the transformer. The power tube is provided with an elastic pressure piece connected with the aluminum shell of the transformer, and the power tube is crimped by the elastic pressure piece. The surface is closely connected with the heat dissipation surface.

For an optimization of the present utility model, a cooling platform is provided on the outer wall of the aluminum shell of the transformer, and the cooling surfaces are located on the outer surface of the cooling platform, and the cooling platform on the upper side of the connection position of each power tube is provided with a convex buckle, and the power tube is provided with a mounting port, a riveting hole is provided on the cooling platform opposite to the mounting port, an elastic pressing piece is provided on the outside of the power tube, and a connecting hole is provided at the lower part of the elastic pressing plate, and the upper end of the elastic pressing plate is provided with a convex Buckle connection, its lower end is connected with the power tube, and the elastic pressing piece is inserted into the connection hole, the installation port, and the riveting hole through the rivet, and then riveted, so that the crimping surface of the power tube and the heat dissipation surface are closely attached by the elasticity of the elastic pressing piece.

For an optimization of the present utility model, the heat dissipation table is provided with a port radially connected to the riveting hole, the heat dissipation silica gel is coated between the crimping surface of the power tube and the heat dissipation surface, and the upper ends of several adjacent elastic pressure sheets on the same side For conjoined structure.

For an optimization of the utility model, the upper end of the aluminum shell of the transformer is provided with a cavity, and a partition is arranged in the cavity, and the cavity is divided into at least two transformer cavities horizontally by the partition, and each transformer cavity is respectively A transformer is installed, and a plurality of cooling grooves are arranged on the wall of each transformer accommodation chamber, and a circulation groove is arranged on the upper end of each partition, and heat-conducting glue is poured between the transformer accommodation chamber and the transformer.

For an optimization of the utility model, a housing cavity is provided in the heat dissipation housing, and an inner boss is provided at the bottom of the housing cavity, and the upper end surface of the inner boss is the lower heat dissipation connection surface, and the control main board is arranged in the housing cavity , the lower end surface of the boss is used as the upper heat dissipation connection surface, and the boss of the transformer aluminum shell passes through the opening to make the upper heat dissipation connection surface contact with the lower heat dissipation connection surface. The positioning holes of the input connector and the output connector, the heat dissipation housing on the opposite side of the side control board are respectively provided with through holes for the input connector and the output connector, the radial direction of the input connector and the output connector Positioning ribs are provided on the housing, and positioning grooves are respectively provided on the through holes, and the input connector and the output connector are both provided with positioning ribs and relative positioning grooves to cooperate with the through holes.

For an optimization of the present utility model, positioning notches are respectively provided at the ends of both sides of the control main board, positioning edges are respectively provided at the side lower parts on both sides of the accommodating cavity bottom of the heat dissipation housing, and the control main board Connect with the positioning edge through the positioning notch.

For an optimization of the utility model, heat dissipation silica gel is coated between the upper heat dissipation connection surface and the lower heat dissipation connection surface.

For an optimization of the utility model, a number of upwardly extending connecting posts are provided around the upper cavity wall of the transformer aluminum shell, and connecting through holes leading to the heat dissipation surface are provided in the connecting posts.

Compared with the background technology, the utility model has the connection between the power tube and the outer wall of the aluminum shell, and the crimping surface of the power tube is closely connected with the heat dissipation surface through the elastic pressing piece, and the elastic pressing piece is connected with the riveting hole on the aluminum shell The power tubes are riveted by rivets, so that the power tubes are not easy to be damaged, and the power tubes are guaranteed to be close to the aluminum shell; while the upper end of the elastic pressing piece is connected with the convex buckle of the heat sink, and the lower end is connected with the power tube, and the elastic pressing piece is inserted into the connection hole through a rivet. The installation port and the riveting hole are then riveted, so that the crimping surface of the power tube and the heat dissipation surface are closely attached through the elastic pressure piece; the connection method of the import and export adopts the connector connection method instead of the traditional wire harness connection method, which greatly improves the compatibility of the charger. ; The inner boss of the heat dissipation shell is in contact with the boss surface of the transformer heat dissipation aluminum shell, and the heat from the transformer heat dissipation aluminum shell is transferred to the machine base, and the heat is conducted out through the heat dissipation structure on the ground outside the machine base. The fan further improves the effect of heat dissipation. Compared with the background technology, the utility model has a compact and reasonable structure, and is easy to manufacture. Molding structure, reasonable space layout, heat conduction glue is poured between the transformer accommodation cavity and the transformer, and the heat conduction effect is good; the lower end of the aluminum shell is provided with a boss extending downward, and the lower end of the boss is used as a heat dissipation surface, and is cooled by water with the peripheral Or the air-cooled equipment is connected to dissipate heat, so as to further increase its heat dissipation effect; on the one hand, heat dissipation grooves are set on the wall of the transformer accommodation chamber to increase the heat dissipation surface to ensure the heat dissipation of the transformer, and on the other hand, to ensure that the heat dissipation glue is firmly bonded to the magnetic core of the transformer; the flow groove The purpose of the setting is that when pouring the heat-conducting glue, when the heat-conducting glue is injected into the one-side transformer accommodation chamber, it will naturally flow into the adjacent transformer accommodation chamber through the flow groove.

Description of drawings

Fig. 1 is a circuit board exploded schematic diagram of the heat dissipation structure of the control board of the charger.

Fig. 2 is a combined schematic diagram of the heat dissipation structure of the control board of the charger.

Figure 3 is a schematic diagram of the connection between the control board, the power tube and the heat dissipation aluminum case.

Figure 4 Enlarged connection schematic diagram of power tube and heat dissipation aluminum shell

Fig. 5 is a schematic top view of the aluminum shell of the transformer.

Fig. 6 is a schematic side view of the aluminum shell of the transformer.

Figure 7 is a schematic diagram of the overall assembly of the heat dissipation structure of the charger.

Fig. 8 is a schematic diagram of positioning ribs on the input connector and the lead-in connector.

detailed description

Embodiment 1: Refer to Fig. 1-8. A heat dissipation structure for a charger, comprising a control board 2, a transformer aluminum case 1, an input connector 6, an output connector 5, a heat dissipation case 9, and a protective cover 6a covering the upper end of the heat dissipation case 9, and inside the transformer aluminum case 1 At least one set of transformers 88 is provided, and the middle part of the control board 2 is provided with an opening 21 for accommodating the aluminum shell of the transformer. Side control boards 3 are provided on the front and rear sides of the transformer, and a number of electronic components 4 are plugged into the side control boards 3 respectively, and each electronic component 4 is plugged into the side control board 3 on the side close to the transformer aluminum shell 1, The front and rear sides of the transformer aluminum shell 1 are respectively provided with connecting columns 11, the lower side of the side control board 3 is connected to the control board 2, the middle part is connected to the connecting column 11, and the outer side of the side control board 3 on one side is connected to a The output connector 5 and the input connector 6 are provided with a number of power tubes 10 on the control board 2 around the port 21, and a number of heat dissipation surfaces 12 are provided on the outer wall of the transformer aluminum shell 1. The aluminum shell 1 is connected to the elastic pressing piece 15 , and the crimping surface of the power tube 10 is tightly connected to the heat dissipation surface 12 through the elastic pressing piece 15 . The outer wall of the transformer aluminum shell 1 is provided with a heat dissipation platform 13, the heat dissipation surface 12 is located on the outer surface of the heat dissipation platform 13, and the heat dissipation platform 13 on the upper side of the connecting position of each power tube 10 is provided with a convex buckle 14, In addition, the power tube 10 is provided with an installation port 101, and the heat sink 13 opposite to the installation port 101 is provided with a riveting hole 131. The outside of the power tube 10 is provided with an elastic pressing piece 15, and the bottom of the elastic pressing piece 15 is provided with a connection. Hole 151, its upper end is connected with convex buckle 14, its lower end is connected with power tube 10, elastic pressing piece 15 is inserted into connecting hole 151, installation port 101, riveting hole 131 through rivet 16, and then riveted, thereby through the elasticity of elastic pressing piece 15 The crimping surface of the power tube 10 is in close contact with the heat dissipation surface 12 .

The heat dissipation table 13 is provided with a port 17 radially connected to the riveting hole 131, and heat dissipation silica gel is coated between the crimping surface of the power tube 10 and the heat dissipation surface 12, and the upper ends of several adjacent elastic pressure pieces 15 on the same side are connected body structure. The upper end of the transformer aluminum shell 1 is provided with a chamber, and a partition 7 is arranged in the chamber, and the chamber is divided into at least two transformer chambers 1a by the partition 7, and a transformer 88 is installed in each transformer chamber 1a. A plurality of heat dissipation grooves 1b are provided on the wall of each transformer accommodation chamber 1a, and circulation grooves 71 are provided at the upper ends of each partition plate 7, and heat-conducting glue 99 is poured between the transformer accommodation chamber 1a and the transformer 88. The heat dissipation housing 9 is provided with an accommodation cavity 95, and the bottom of the accommodation cavity 95 is provided with an inner boss 94. The upper end surface of the inner boss 94 is a lower heat dissipation connection surface, and the control main board 2 is arranged in the accommodation cavity 95. The lower end surface of the boss 13a is used as the upper heat dissipation connection surface 131a. The boss 13a of the transformer aluminum shell 1 passes through the opening 21 so that the upper heat dissipation connection surface 131a is connected to the lower heat dissipation connection surface. Positioning holes 31 for positioning and connecting the input connector 6 and the output connector 5 are respectively provided, and the heat dissipation housing 9 on the opposite side of the side control board 3 is respectively provided with through holes for the input connector 6 and the output connector 5 92, the radial housings of the input connector 6 and the output connector 5 are provided with positioning ribs 81, and the through holes are respectively provided with positioning grooves 93, and the input connector 6 and the output connector 5 pass through the first A positioning rib 81 , the second positioning rib 10 a and the corresponding positioning groove 93 are connected with the passing hole 92 .

The ends on both sides of the control board 2 are respectively provided with positioning notches 22a, and the side lower parts on both sides of the bottom of the accommodating cavity of the heat dissipation housing 9 are respectively provided with positioning edges 91, and the control board 2 passes through the positioning notches. 22a is connected with positioning edge 91. Heat dissipation silica gel is coated between the upper heat dissipation connection surface 131 a and the lower heat dissipation connection surface in surface contact. A plurality of upwardly extending connecting columns 51 are provided around the upper cavity wall of the transformer aluminum case 1 , and connecting through holes 51a are provided in the connecting columns 51 to reach the upper heat dissipation connecting surface 131a.

It should be understood that: although the present embodiment has described the utility model in more detail, these explanations are only a simple description of the utility model, rather than a limitation of the utility model, and any content that does not exceed the essence of the utility model Inventions and creations all fall within the protection scope of the present utility model.

Claims (8)

1. A heat dissipation structure for a charger, comprising a control board (2), a transformer aluminum case (1), an input connector (6), an output connector (5), a heat dissipation housing (9) and a cover disposed on the heat dissipation housing (9) The protective cover (6a) on the upper end, at least one group of transformers (88) is arranged in the transformer aluminum shell (1), and it is characterized in that: the middle part of the control board (2) is provided with a port (21) for accommodating the transformer aluminum shell ), the lower end of the transformer aluminum shell (1) passes through the opening (21) and is provided with a boss (13a) extending downward, and the front and rear sides of the control board (2) are respectively provided with side control boards (3), and the side Several electronic components (4) are respectively plugged into the control board (3), and each electronic component (4) is plugged into the side control board (3) near the side of the transformer aluminum shell (1). The front and rear sides of the transformer aluminum shell (1) are respectively provided with connecting columns (11), the lower side of the side control board (3) is connected with the control main board (2), the middle part is connected with the connecting column (11), and one side is connected with the connecting column (11). Output connectors (5) and input connectors (6) are connected to the outside of the side control board (3), and several power tubes (10) are arranged on the control board (2) around the port (21). (1) is provided with a number of heat dissipation surfaces (12) on the outer wall of the peripheral side, and the power tube is provided with elastic pressing pieces (15) connected with the transformer aluminum shell (1), and the power is transferred through the elastic pressing pieces (15). The crimping surface of the tube (10) is tightly connected to the heat dissipation surface (12). 2. The heat dissipation structure of the charger according to claim 1, characterized in that: a heat dissipation platform (13) is provided on the outer wall of the aluminum shell of the transformer (1), and the heat dissipation surfaces (12) are all located on the heat dissipation platform (13). ) on the outer surface of each power tube (10) on the cooling platform (13) on the upper side of the connecting position is provided with a convex buckle (14), and the power tube (10) is provided with a mounting port (101), the installation A riveting hole (131) is provided on the cooling platform (13) opposite to the mouth (101), an elastic pressing piece (15) is provided on the outside of the power tube (10), and a connecting hole ( 151), its upper end is connected with the convex buckle (14), its lower end is connected with the power tube (10), and the elastic pressure piece (15) is inserted into the connection hole (151), the installation port (101), the riveting hole ( 131) followed by riveting, so that the crimping surface of the power tube (10) is closely attached to the heat dissipation surface (12) through the elasticity of the elastic pressure piece (15). 3. The heat dissipation structure of the charger according to claim 1, characterized in that: the heat dissipation platform (13) is provided with a port (17) radially connected to the riveting hole (131), and the crimping of the power tube (10) The surface and the heat dissipation surface (12) are coated with heat dissipation silica gel, and the upper ends of several adjacent elastic pressure sheets (15) on the same side are in a conjoined structure. 4. The heat dissipation structure of the charger according to claim 1, characterized in that: the upper end of the transformer aluminum shell (1) is provided with a cavity, and a partition (7) is provided in the cavity, and the partition (7) will The chamber is horizontally divided into at least two transformer chambers (1a), each transformer chamber (1a) is respectively equipped with a transformer (88), and the wall of each transformer chamber (1a) is provided with a number of cooling grooves (1b) , the upper end of each partition (7) is provided with a circulation groove (71), and a heat-conducting glue (99) is poured between the transformer accommodation chamber (1a) and the transformer (88). 5. The heat dissipation structure of the charger according to claim 1, characterized in that: the heat dissipation housing (9) is provided with an accommodation chamber (95), and the inner bottom of the accommodation chamber (95) is provided with an inner boss (94). The upper end surface of the boss (94) is the lower heat dissipation connection surface, the control board (2) is arranged in the accommodating cavity (95), the lower end surface of the boss (13a) is used as the upper heat dissipation connection surface (131a), and the transformer The boss (13a) of the aluminum shell (1) passes through the opening (21) so that the upper heat dissipation connection surface (131a) and the lower heat dissipation connection surface are connected in surface contact, and the side control board (3) on one side is respectively equipped with Locate and connect the positioning holes (31) of the input connector (6) and the output connector (5), and the heat dissipation housing (9) on the opposite side of the side control board (3) is respectively provided with the input connector (6) and the output connector (5). The through hole (92) of the output connector (5), the radial housing of the input connector (6) and the output connector (5) are provided with positioning ribs (81), the through Positioning grooves (93) are respectively arranged on the holes, and the input connectors (6) and the output connectors (5) are connected by positioning ribs (81) and relative positioning grooves (93) and through holes (92) . 6. The heat dissipation structure of the charger according to claim 5, characterized in that: the ends of both sides of the control board (2) are respectively provided with positioning notches (22a), and the accommodation of the heat dissipation housing (9) Positioning edges (91) are respectively provided on the side lower parts on both sides of the cavity bottom, and the control main board (2) is connected to the positioning edges (91) through positioning notches (22a). 7. The heat dissipation structure of the charger according to claim 5, characterized in that: heat dissipation silica gel is coated between the surface contact between the upper heat dissipation connection surface (131a) and the lower heat dissipation connection surface. 8. The heat dissipation structure of the charger according to claim 5, characterized in that: there are several connecting columns (51) extending upwards around the upper end cavity wall of the transformer aluminum shell (1), and the connecting columns (51) are provided with The connection through hole (51a) penetrates to the upper heat dissipation connection surface (131a).