Vehicle-mounted charger with novel ventilation structure

Abstract

The invention relates to charging equipment, and discloses a vehicle-mounted charger with a novel ventilation structure, which comprises a shell (1), a mounting groove (11) is formed in the shell (1), a plurality of cooling fins (12) are arranged at the outer end of the shell (1), a positioning groove (13) is formed in the bottom of the mounting groove (11), a ventilation groove (14) is formed in the bottom of the positioning groove (13), and ventilation holes (15) communicated with the outside are formed in the side wall of the ventilation groove (14). The ventilation holes (15) are formed in the side wall of the bottom end of the cooling fin (12), and a ventilation membrane (2) is installed in the positioning groove (13) and covers the ventilation groove (14). The breathable membrane is installed in the positioning groove in a hidden mode, the space in the installation groove is not occupied, and installation of other components is not affected; a complicated structure does not need to be processed to be matched with the ventilation structure; a sealing ring does not need to be independently arranged for sealing; due to the fact that certain airflow is formed in the heating process, the heat dissipation capacity of the cooling fins is improved.

Description

Technical Field

[0001] The invention relates to charging equipment, in particular to a vehicle-mounted charger with a novel ventilation structure. Background Art

[0002] The core of the breathable valve is the EPTFE membrane. In order to protect the EPTFE membrane, a plastic shell is used for protection. Its structure includes two plastic parts, an EPTFE membrane, and an O-ring. In addition, high precision requirements are put forward for the installation structure to ensure the sealing between the O-ring and the shell. In addition, a matching installation structure needs to be set on the shell. This structure requires a certain amount of space, and the sealing structure of the O-ring itself is a leakage risk. The processing of the matching installation structure is also costly.

[0003] For example, a power charger module disclosed in announcement number CN207884332U, in order to further improve the dustproof and waterproof performance of the power charger module, a through hole for installing a one-way air valve is provided on the first mounting plate to form a first mounting hole, and two sealing gaskets are provided between the side of the one-way air valve and the inner wall of the first mounting hole. The one-way air valve is sleeved on the side of the one-way air valve. In order to make the one-way air valve easy to install and reliably fixed on the upper shell, one end of the one-way air valve is provided with four circumferentially arranged buckles, which pass through the first mounting hole and enter the accommodating space. The shape of the first mounting hole is circular. The structure is complex, and there is a risk of leakage of the sealing gasket. Summary of the invention

[0004] The present invention aims at the shortcomings of the prior art and provides a vehicle-mounted charger with a novel ventilation structure.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] The on-board charger with a novel ventilation structure includes a housing, a mounting groove is provided in the housing, a number of heat sinks are provided at the outer end of the housing, a positioning groove is provided at the bottom of the mounting groove, a ventilation groove is provided at the bottom of the positioning groove, a ventilation hole is provided on the side wall of the ventilation groove that is connected to the outside world, the ventilation hole is provided on the side wall at the bottom of the heat sink, a ventilation membrane is installed in the positioning groove, and the ventilation membrane covers the ventilation groove. The ventilation structure is simple, and the traditional ventilation valve is eliminated. Instead, the ventilation structure is integrated into the housing, which does not occupy the space in the mounting groove and does not affect the installation of other components; there is no need to process a complex structure to match the ventilation structure; there is no need to set a sealing ring separately for sealing; because it forms a certain airflow during the heating process, in the current design, the ventilation hole is set at the bottom, which has certain benefits for the overall heat dissipation and can reduce the housing by about 1.5 degrees.

[0007] Preferably, a convex block is integrally formed on the side wall of the heat sink where the ventilation groove is located, and the ventilation hole is arranged on the convex block. The convex block increases the wall thickness of the heat sink, facilitates the processing of the ventilation groove, and also ensures the strength of the heat sink.

[0008] Preferably, the ventilation groove is a blind hole, and two ventilation holes are arranged on the side wall at the bottom thereof, and the two ventilation holes are evenly distributed on the ventilation groove and symmetrically arranged on both sides of the heat sink. The bottom of the ventilation groove is not straight, so as to prevent foreign matter from directly piercing the breathable film. The ventilation holes on both sides of the heat sink can drive the airflow between adjacent heat sinks, thereby improving the heat dissipation effect of the heat sink.

[0009] Preferably, two ventilation grooves are provided at the bottom of the positioning groove, and the two ventilation grooves increase the air permeability of the breathable structure.

[0010] Preferably, the breathable membrane is an EPTFE membrane, the upper end surface of the breathable membrane is lower than the notch of the positioning groove, and the breathable membrane is hidden at the bottom of the installation groove, effectively avoiding interference with other components and improving the integrity of the breathable membrane.

[0011] Preferably, the positioning groove is covered with a protective cover, and a plurality of air passages communicating with the interior of the positioning groove are arranged on the side wall of the protective cover. The protective cover is used to protect the breathable membrane to prevent the breathable membrane from being punctured by other components during installation.

[0012] Preferably, the lower end surface of the protective cover is provided with a number of opening grooves, and the opening grooves penetrate the side wall of the protective cover to form an air duct.

[0013] Preferably, a limiting groove is provided on the side wall of the positioning groove, and a positioning piece is provided at the lower end of the protective cover, and when the protective cover is installed in the positioning groove, the positioning piece is engaged in the limiting groove. The protective cover can be firmly fastened to the housing, and the protective cover will not be easily separated from the housing.

[0014] The present invention has significant technical effects due to the adoption of the above technical solution:

[0015] (1) The ventilation structure is simple. The traditional ventilation valve is eliminated and the ventilation structure is integrated into the housing instead, which does not occupy the space in the installation slot and does not affect the installation of other components.

[0016] (2) There is no need to process a complex structure to match the breathable structure;

[0017] (3) No need to set up a separate sealing ring for sealing, which has better reliability and low cost;

[0018] (4) Since the breathable membrane is hidden and installed at the bottom of the installation groove, the protection level of the membrane is higher;

[0019] (5) The breathable structure of this structure will greatly increase the air permeability;

[0020] (6) Since a certain amount of airflow is formed during the heating process, in the current design, the ventilation holes arranged at the bottom are beneficial to the overall heat dissipation and can reduce the shell temperature by about 1.5 degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the appearance and structure of the on-board charger.

[0022] Figure 2 yes Figure 1 A partial enlarged view of middle A.

[0023] Figure 3 This is a schematic diagram of the structure at the bottom of the casing after the on-board charger is opened.

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure after axial sectioning along the ventilation groove.

[0025] Figure 5 yes Figure 4 A partial enlarged view of B.

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of installing a protective cover on a ventilation groove.

[0027] Figure 7 yes Figure 6 A partial enlarged view of C in the middle.

[0028] The parts indicated by the numbers in the above drawings are as follows:

[0029] 1—housing, 11—installation slot, 12—heat sink, 13—positioning slot, 14—ventilation slot, 15—vent hole, 16—bump, 17—limiting slot

[0030] 2—Breathable membrane

[0031] 3—protective cover, 31—vent, 32—positioning piece DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-7 The present invention is further described in detail with examples.

[0033] Example 1

[0034] The vehicle charger with a novel ventilation structure includes a housing 1, a mounting groove 11 is provided in the housing 1, and a number of heat sinks 12 are provided at the outer end of the housing 1. When the vehicle charger is working, the transformer will generate a large amount of heat. The heat sink 12 is used to transfer heat and dissipate the temperature in the housing 1 in time to ensure that the housing 1 is within the set temperature value. A positioning groove 13 is provided at the bottom of the mounting groove 11. The positioning groove 13 is a circular slot. A ventilation groove 14 is provided at the bottom of the positioning groove 13. The ventilation groove 14 is also a circular slot. The side wall of the ventilation groove 14 is provided with a ventilation hole 15 connected to the outside world. The ventilation hole 15 is provided on the side wall of the bottom end of the heat sink 12. A breathable membrane 2 is installed in the positioning groove 13. The breathable membrane 2 is covered on the ventilation groove 14 by pasting. The ventilation hole 15 is hidden on the side wall of the heat sink 12, and it is difficult for foreign matter to poke the breathable membrane 2 through the ventilation hole 15, and the breathable membrane 2 is safer. When the on-board charger is working, airflow is generated inside the charger, and a part of the airflow is discharged to the heat sink 12 through the air holes 15 . The airflow on the heat sink 12 is also driven, thereby accelerating the heat dissipation effect of the heat sink 12 .

[0035] Since a certain amount of airflow is formed during the heating process, in the current design, the air holes are set at the bottom, which has certain benefits for the overall heat dissipation and can reduce the shell temperature by about 1.5 degrees. The comparison with the ordinary solution after CAE calculation is as follows:

[0036] Table 1 shows the outer wall temperature of the shell of the traditional breathable valve

[0037]

[0038]

[0039] Table 2 shows the outer wall temperature of the housing using this breathable structure.

[0040]

[0041] Bumps 16 are integrally formed on both side walls of the heat sink 12 where the ventilation groove 14 is located, and the ventilation holes 15 are arranged on the bumps 16 . The bumps 16 increase the wall thickness of the heat sink 12 , facilitate the processing of the ventilation groove 14 , and also ensure the strength of the heat sink 12 .

[0042] The ventilation groove 14 is a blind hole to prevent the ventilation hole 15 from passing through the casing 1 and to prevent foreign objects from piercing the breathable membrane 2 through the straight hole. Two ventilation holes 15 are provided on the side wall at the bottom of the ventilation groove 14. The two ventilation holes 15 are evenly distributed on the ventilation groove 14 and symmetrically arranged on both sides of the heat sink 12. The ventilation holes 15 are arranged on the side wall of the ventilation groove 14, so that the ventilation airflow channel is curved to prevent foreign objects from directly passing through the airflow channel and damaging the breathable membrane 2.

[0043] The breathable membrane 2 is an EPTFE membrane, the upper end surface of the breathable membrane 2 is lower than the notch of the positioning groove 13, and the breathable membrane 2 is hidden at the bottom of the installation groove 11, effectively avoiding interference with other components and improving the integrity of the breathable membrane 2.

[0044] Example 2

[0045] The features of the embodiment 2 are basically the same as those of the embodiment 1, except that two ventilation grooves 14 are provided at the bottom of the positioning groove 13, and the two ventilation grooves 14 increase the air permeability of the air permeable structure.

[0046] Example 3

[0047] The features of Example 3 are basically the same as those of Example 1 or 2, except that a protective cover 3 is covered on the positioning groove 13, and the protective cover 3 is used to protect the breathable membrane 2 to prevent it from being damaged. A plurality of air ducts 31 connected to the interior of the positioning groove 13 are provided on the side wall of the protective cover 3. In this embodiment, the number of the air ducts 31 is four, and the four air ducts 31 are evenly distributed on the protective cover 3.

[0048] The lower end surface of the protective cover 3 is provided with a number of opening grooves, which penetrate through the side wall of the protective cover 3 and form an air passage 31 .

[0049] A limiting groove 17 is provided on the side wall of the positioning groove 13, and the limiting groove 17 is an annular limiting groove. A positioning piece 32 is provided at the lower end of the protective cover 3. There are three positioning pieces 32, and the three positioning pieces 32 are evenly distributed under the protective cover 3. When the protective cover 3 is installed in the positioning groove 13, the positioning piece 32 is engaged in the limiting groove 17.

Claims

1. A vehicle charger with a novel ventilation structure comprises a housing (1), a mounting groove (11) is provided inside the housing (1), and a plurality of heat sinks (12) are provided at the outer end of the housing (1), wherein: A positioning groove (13) is provided at the bottom of the installation groove (11), a ventilation groove (14) is provided at the bottom of the positioning groove (13), a ventilation hole (15) communicating with the outside is provided on the side wall of the ventilation groove (14), the ventilation hole (15) is provided on the side wall at the bottom end of the heat sink (12), a ventilation membrane (2) is installed in the positioning groove (13), and the ventilation membrane (2) covers the ventilation groove (14).

2. The vehicle-mounted charger with a novel ventilation structure according to claim 1 is characterized in that: A convex block (16) is integrally formed on the side wall of the heat sink (12) where the ventilation groove (14) is located, and the ventilation hole (15) is arranged on the convex block (16).

3. The vehicle-mounted charger with a novel ventilation structure according to claim 1 is characterized in that: The ventilation groove (14) is a blind hole, and two ventilation holes (15) are arranged on the side wall of the bottom thereof. The two ventilation holes (15) are evenly distributed on the ventilation groove (14) and symmetrically arranged on both sides of the heat sink (12).

4. The vehicle-mounted charger with a novel ventilation structure according to claim 1 is characterized in that: Two ventilation grooves (14) are provided at the bottom of the positioning groove (13).

5. The vehicle-mounted charger with a novel ventilation structure according to claim 1 is characterized in that: The breathable membrane (2) is an EPTFE membrane, and the upper end surface of the breathable membrane (2) is lower than the notch of the positioning groove (13).

6. The vehicle-mounted charger with a novel ventilation structure according to any one of claims 1 to 5, characterized in that: The positioning groove (13) is covered with a protective cover (3), and a plurality of air passages (31) are provided on the side wall of the protective cover (3) and are in communication with the interior of the positioning groove (13).

7. The vehicle-mounted charger with a novel ventilation structure according to claim 6 is characterized in that: The lower end surface of the protective cover (3) is provided with a plurality of opening grooves, and the opening grooves penetrate the side wall of the protective cover (3) and form an air passage (31).

8. The vehicle-mounted charger with a novel ventilation structure according to claim 6 is characterized in that: A limiting groove (17) is provided on the side wall of the positioning groove (13), and a positioning piece (32) is provided at the lower end of the protective cover (3). When the protective cover (3) is installed in the positioning groove (13), the positioning piece (32) is engaged in the limiting groove (17).

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