OBC multilayer board of vehicle-mounted charger of new energy automobile

Abstract

The utility model discloses an OBC multilayer board for a vehicle-mounted charger of a new energy automobile. A main body of the OBC multilayer board comprises an OBC circuit board, a potting assembly LLC and a potting assembly PFC. The circuit board further comprises a mounting plate, the encapsulation assembly LLC and the encapsulation assembly PFC are arranged on the upper surface of the mounting plate, and the OBC circuit board is arranged on the upper sides of the encapsulation assembly LLC and the encapsulation assembly PFC and connected to the upper surface of the mounting plate through a support assembly. First mounting grooves are upwards formed in the lower surfaces of at least two sides of the OBC circuit board main body, the support assembly comprises supporting columns, first insertion columns matched with the first mounting grooves are formed at the tops of the supporting columns, first through holes are formed in the projection ranges of the first mounting grooves, and the first insertion columns are inserted into the first through holes. At least one stress hole is formed in the OBC circuit board on the peripheral side of the first through hole; the arrangement of the stress holes can prevent the OBC circuit board from being broken during installation and affecting the whole board body to be unable to be used, and the support columns can increase the distance between the installation board and the OBC circuit board main body to a certain extent, thereby facilitating heat dissipation.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and specifically relates to an OBC multilayer board for an on-board charger of a new energy automobile. Background Art

[0002] The working principle of the OBC on-board charger mainly includes the following structures: AC input: OBC receives AC power input from the mains or charging pile and converts it into low-voltage DC. Rectification and filtering: DC power will pass through the rectification and filtering circuit to convert it into stable DC power and remove the fluctuations and noise. Control and management: OBC also needs to control and manage the charging current, voltage, temperature, etc. to ensure safe and reliable charging. Output charging: The controlled and managed DC power will be output to the battery pack of the electric vehicle for charging until the battery pack reaches the preset charging state. As part of the electrical system of the electric vehicle, the OBC is fixed on the chassis, and its input end is fixed on the vehicle body in the form of a standard charging interface for connecting an external power supply. However, the distance between the existing OBC multi-layer boards is small, making it difficult to achieve heat dissipation. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the utility model provides an OBC multilayer board for an onboard charger of a new energy vehicle, comprising an OBC multilayer board body, wherein the OBC multilayer board body comprises an OBC circuit board, a potting assembly LLC and a potting assembly PFC;

[0004] It also includes a mounting plate, the potting assembly LLC and the potting assembly PFC are arranged on the upper surface of the mounting plate, the OBC circuit board is arranged on the upper side of the potting assembly LLC and the potting assembly PFC, and is connected to the upper surface of the mounting plate through a bracket assembly;

[0005] The lower surfaces of at least two sides of the OBC circuit board body are provided with a first mounting groove upwardly, the bracket assembly includes a support column, a first insertion column matched with the first mounting groove is formed on the top of the support column, a first through hole is provided within the projection range of the first mounting groove, and at least one stress hole is provided on the OBC circuit board located around the first through hole;

[0006] A second mounting groove is formed on the mounting plate, and a second insertion column matched with the second mounting groove is formed at the bottom of the support column.

[0007] The mounting plate may be a base on the chassis of a car for mounting the on-board charger.

[0008] Through the above technical solution, the setting of the stress hole can prevent the utility model from breaking during installation, which will affect the entire board and make it unusable. The support column has a certain distance between the mounting plate and the OBC circuit board body to increase heat dissipation.

[0009] And the plug-in method is adopted, and the plug-in can be an interference fit, or an elastic ring is sleeved between the outer wall of the second insertion column and the inner wall of the second installation groove to increase the stability of the detachable connection.

[0010] As a preferred embodiment of the above, the first insertion column is provided with a first screw hole, and further comprises a fastener, which passes through the first through hole and is screwed into the first screw hole. A matching column for passing through the first through hole is formed on the top of the first insertion column, and the first screw hole extends to the matching column.

[0011] The height of the matching column is required to be lower than the thickness of the first through hole so as to match and stably connect with the fastener.

[0012] As a preferred embodiment of the above, the stress hole is crescent-shaped and symmetrically arranged on both sides of the first through hole.

[0013] As a preferred embodiment of the above, a power switch tube is provided on the potting assembly LLC, and a heat dissipation grille is provided on the OBC circuit board body located at the projection position of the power switch tube.

[0014] Among them, a heat dissipation grille is also provided on the mounting plate at the projection position of the potting assembly LLC, and foot pads are integrally formed at the bottom of the four corners of the mounting plate, which can be fixed to the casing of the on-board charger by fasteners.

[0015] The heat dissipation grille includes a plurality of cross heat dissipation holes arranged in a matrix, and a heat dissipation circular hole is provided in the center of the cross heat dissipation hole.

[0016] Compared with the prior art, the utility model has the advantages that: the utility model has a simple structure, the OBC multilayer board has several layers, and the heat insulation generated by the potting assembly LLC thereof is dissipated to increase work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the stress hole of the utility model;

[0019] Figure 3 This is a schematic diagram of the heat dissipation grille structure of the utility model;

[0020] Reference numerals:

[0021] 1-OBC multilayer board body; 101OBC circuit board; 1012 first mounting groove; 1013 support column; 1014 first perforation; 1015 stress hole; 1016 elastic ring; 102 potting assembly LLC; 103 potting assembly PFC;

[0022] 2 mounting plate; 201 second mounting slot; 202 heat dissipation grille; 203 foot pad;

[0023] 301 first screw hole; 302 fastener. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, and the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of implementation of the present invention.

[0025] Referring to the attached drawings, the utility model adopts the following technical solution: an OBC multilayer board for an onboard charger of a new energy vehicle, comprising an OBC multilayer board body 1, wherein the OBC multilayer board body 1 comprises an OBC circuit board 101, a potting assembly LLC102 and a potting assembly PFC103;

[0026] It also includes a mounting plate 2, the potting assembly LLC102 and the potting assembly PFC103 are arranged on the upper surface of the mounting plate 2, the OBC circuit board 101 is arranged on the upper side of the potting assembly LLC102 and the potting assembly PFC103, and is connected to the upper surface of the mounting plate 2 through a bracket assembly;

[0027] The lower surface of at least two sides of the main body of the OBC circuit board 101 is provided with a first mounting groove 1012 upwardly, the bracket assembly includes a support column 1013, a first insertion column matched with the first mounting groove 1012 is formed on the top of the support column 1013, a first through hole 1014 is provided within the projection range of the first mounting groove 1012, and at least one stress hole 1015 is provided on the OBC circuit board 101 around the first through hole 1014;

[0028] The mounting plate 2 is provided with a second mounting groove 201 , and the bottom of the support column 1013 is formed with a second insertion column matched with the second mounting groove 201 .

[0029] Through the above technical solution, the setting of the stress hole 1015 can prevent the utility model from breaking during installation, which will affect the entire board and make it unusable. In addition, the support column 1013 has a certain function of increasing the distance between the mounting plate 2 and the main body of the OBC circuit board 101 to facilitate heat dissipation.

[0030] Among them, an installation position for placing the potting assembly LLC102 and the potting assembly PFC103 is formed on the installation plate 2, a groove or a breathable hollow can be opened on the installation position, and a depression can be opened on the installation position. The plate bodies of the potting assembly LLC102 and the potting assembly PFC103 are integrally formed with a protrusion that matches the depression, and the two are interference fit.

[0031] The plug-in connection may be an interference fit, or an elastic ring 1016 is sleeved between the outer wall of the second insertion column and the inner wall of the second installation groove 201 to increase the stability of the detachable connection.

[0032] As a preferred embodiment, the first insertion column is provided with a first screw hole 301, and further includes a fastener 302, which passes through the first through hole 1014 and is screwed into the first screw hole 301. A matching column for passing through the first through hole 1014 is formed on the top of the first insertion column, and the first screw hole 301 extends to the matching column.

[0033] The height of the matching column is required to be lower than the thickness of the first through hole 1014 so as to match and stably connect with the fastener 302 .

[0034] As a preferred embodiment of the above, the stress hole 1015 is crescent-shaped and symmetrically arranged on both sides of the first through hole 1014 .

[0035] As a preferred embodiment of the above, a power switch tube is provided on the potting assembly LLC102, and a heat dissipation grille 202 is provided on the main body of the OBC circuit board 101 at the projection position of the power switch tube.

[0036] A heat dissipation grille 202 is also provided on the mounting plate 2 at the projection position of the potting assembly LLC102, and foot pads 203 are integrally formed at the bottom of the four corners of the mounting plate 2, which can be fixed to the housing of the vehicle charger by fasteners 302.

[0037] The heat dissipation grille 202 includes a plurality of cross heat dissipation holes arranged in a matrix, and a heat dissipation circular hole is formed in the center of the cross heat dissipation hole.

[0038] Compared with the prior art, the utility model has the following advantages: the utility model has a simple structure, the OBC multilayer board has several layers, and the heat insulation generated by the potting assembly LLC102 thereof is dissipated, and it is easy to assemble so as to increase work efficiency.

[0039] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0040] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A new energy vehicle on-board charger OBC multilayer board, Features: It comprises an OBC multilayer board body (1), wherein the OBC multilayer board body (1) comprises an OBC circuit board (101), a potting assembly LLC (102) and a potting assembly PFC (103); It also includes a mounting plate (2), the potting assembly LLC (102) and the potting assembly PFC (103) being arranged on the upper surface of the mounting plate (2), and the OBC circuit board (101) being arranged on the upper side of the potting assembly LLC (102) and the potting assembly PFC (103), and being connected to the upper surface of the mounting plate (2) via a bracket assembly; The lower surfaces of at least two sides of the main body of the OBC circuit board (101) are provided with first installation grooves (1012) facing upwards, the bracket assembly comprises a support column (1013), a first insertion column matching the first installation groove (1012) is formed on the top of the support column (1013), a first through hole (1014) is provided within the projection range of the first installation groove (1012), and at least one stress hole (1015) is provided on the OBC circuit board (101) around the first through hole (1014); The mounting plate (2) is provided with a second mounting groove (201), and a second insertion column matching the second mounting groove (201) is formed at the bottom of the support column (1013).

2. The OBC multilayer board for the on-board charger of new energy vehicles according to claim 1, Features: The first insertion column is provided with a first screw hole (301) and also includes a fastener (302). The fastener (302) passes through the first through hole (1014) and is screwed into the first screw hole (301).

3. The OBC multilayer board for the on-board charger of new energy vehicles according to claim 2, Features: A matching column for passing through the first through hole (1014) is formed on the top of the first insertion column, and the first screw hole (301) extends to the matching column.

4. The OBC multilayer board for the on-board charger of new energy vehicles according to claim 1, Features: An elastic ring (1016) is sleeved between the outer wall of the second insertion column and the inner wall of the second installation groove (201).

5. The OBC multilayer board for the on-board charger of new energy vehicles according to claim 1, Features: The stress hole (1015) is crescent-shaped and symmetrically arranged on both sides of the first through hole (1014).

6. The OBC multilayer board for the on-board charger of new energy vehicles according to claim 1, Features: The potting assembly LLC (102) is provided with a power switch tube, and a heat dissipation grille (202) is provided on the main body of the OBC circuit board (101) located at the projection position of the power switch tube.

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