A vehicle-mounted charger and an electric vehicle

Abstract

The utility model relates to a kind of vehicle-mounted charger and electric automobile, vehicle-mounted charger includes shell, power tube and metal connecting plate, the waterway is provided in the shell, the power tube is arranged in one side of metal base plate, the other side of the metal base plate is adhered to the side wall of the waterway by heat-conducting adhesive agent, the metal base plate is connected with the bottom of the shell by the metal connecting plate.The vehicle-mounted charger of the utility model has good heat dissipation effect, and can also prevent the power tube from being damaged, and increase the adhesion of the metal base plate and the waterway side wall.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to an on-board charger and an electric vehicle. Background Technology

[0002] As technology advances, power transistors are becoming smaller and smaller, while the requirements for heat dissipation are becoming increasingly stringent. During operation, the power transistors in a vehicle charger generate a significant amount of heat due to losses, causing the transistors and surrounding components to overheat. This can damage the power transistors or other electronic components, preventing the vehicle charger from functioning properly.

[0003] Therefore, it is necessary to develop a new on-board charger and electric vehicle. Utility Model Content

[0004] The purpose of this invention is to provide an on-board charger and electric vehicle with good heat dissipation, which can also prevent damage to the power transistor and increase the adhesion between the metal substrate and the water channel sidewall.

[0005] In a first aspect, the on-board charger of the present invention includes a housing, a power transistor, and a metal connecting plate. A water channel is provided inside the housing. The power transistor is disposed on one side of a metal substrate. The other side of the metal substrate is bonded to the side wall of the water channel by a thermally conductive adhesive. The metal substrate is connected to the bottom of the housing through the metal connecting plate.

[0006] Optionally, the bottom of the housing is provided with a metal column, and the metal column is provided with vertical threaded holes; the metal connecting plate includes a first connecting part and a second connecting part, the first connecting part is connected to the metal substrate, the second connecting part is provided with through holes corresponding to the threaded holes, one side of the second connecting part is attached to the surface of the metal column, and is connected to the threaded holes by screws passing through the through holes in sequence.

[0007] Optionally, the metal connecting plate is integrally formed, and multiple bends are provided between the first connecting portion and the second connecting portion. The deformation of the bends is used to reduce stress.

[0008] Optionally, the metal substrate is an aluminum substrate or a copper substrate.

[0009] Optionally, the thermally conductive adhesive is a thermally conductive adhesive or a thermally conductive structural adhesive.

[0010] Secondly, the electric vehicle described in this utility model includes the aforementioned on-board charger.

[0011] The beneficial effects of this utility model are: This utility model relates to an on-board charger and an electric vehicle. By transferring the heat of the power transistor to a metal substrate, the heat from the metal substrate is transferred to the water channel through a thermally conductive adhesive, achieving good heat dissipation. The metal substrate is connected to the bottom of the housing via a metal connecting plate, which can prevent damage to the power transistor and increase the fit between the metal substrate and the sidewall of the water channel. The metal connecting plate is made of metal, which can also transfer some of the heat from the housing to the water channel through the metal substrate. The metal substrate is connected to the housing and grounded via the metal connecting plate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the on-board charger described in one embodiment of this application from a structural perspective; Figure 2 for Figure 1 An enlarged structural diagram of part A of the on-board charger described in the figure; Figure 3 This is a schematic diagram of the connection between the metal connecting plate and the metal substrate in an embodiment of this application; Figure 4 This is a structural schematic diagram of the on-board charger described in the embodiments of this application from another perspective; Figure 5 for Figure 4 An enlarged structural diagram of part B of the on-board charger described in the figure.

[0013] Explanation of reference numerals in the attached drawings: 1-Housing; 11-Water channel; 12-Threaded hole; 13-Metal column; 2-Power tube; 3-Metal connecting plate; 31-First connecting part; 32-Second connecting part; 33-Through hole; 34-Bending part; 4-Metal substrate; 5-Thermal conductive adhesive. Detailed Implementation

[0014] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0015] See Figures 1 to 5As shown in the figure, this application discloses an on-board charger, including a housing 1, a power transistor 2, and a metal connecting plate 3. A water channel 11 is provided inside the housing 1. The power transistor 2 is disposed on one side of a metal substrate 4. The other side of the metal substrate 4 is bonded to the side wall of the water channel 11 via a thermally conductive adhesive 5. The metal substrate 4 is connected to the bottom of the housing 1 via the metal connecting plate 3. The power transistor 2, acting as a heat-generating device, generates heat and transfers it to the metal substrate 4. The heat from the metal substrate 4 is then transferred to the water channel 11 via the thermally conductive adhesive 5, carrying away the heat. The metal substrate 4 is connected to the bottom of the housing 1 via the metal connecting plate 3, which serves to ground the metal substrate 4 and increase the adhesion between the metal substrate 4 and the side wall of the water channel 11. The housing 1 is also a metal structural component.

[0016] In this embodiment, a metal column 13 is provided at the bottom of the housing 1, and a vertical threaded hole 12 is provided on the metal column 13.

[0017] In this embodiment, as Figure 3 As shown, the metal connecting plate 3 includes a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 is connected to the metal substrate 4. The second connecting portion 32 is provided with through holes 33 corresponding to the threaded holes 12. One side of the second connecting portion 32 is attached to the surface of the metal column 13, and is connected to the threaded holes 12 by screws passing through the through holes 33 in sequence. The metal connecting plate 3 is integrally formed, and multiple bending portions 34 are provided between the first connecting portion 31 and the second connecting portion 32. The deformation of the bending portions 34 is used to reduce stress. The first connecting portion 31 and the second connecting portion 32 are both made of copper. In some embodiments, the first connecting portion 31 and the second connecting portion 32 may also be made of aluminum, copper, or other metals, which is not limited here.

[0018] In this embodiment, the metal column 13 and the shell 1 are an integral structure.

[0019] In this embodiment, the metal substrate 4 is an aluminum substrate, a copper substrate, or a metal substrate made of other metal materials, but is not limited to this, as long as it meets its functionality.

[0020] In this embodiment, the thermally conductive adhesive 5 is a thermally conductive adhesive or a thermally conductive structural adhesive. The thermally conductive adhesive 5 can be thermally conductive silicone or other types of thermally conductive adhesive 5, and is not limited thereto, as long as it meets its functional requirements.

[0021] This utility model discloses an electric vehicle, including the above-described on-board charger.

[0022] The on-board charger and electric vehicle of this utility model achieve heat dissipation by transferring the heat of the power transistor to the metal substrate, and then transferring the heat of the metal substrate to the water channel through a thermally conductive adhesive, resulting in good heat dissipation effect. The metal substrate is connected to the bottom of the shell through a metal connecting plate, which can prevent damage to the power transistor and increase the adhesion between the metal substrate and the side wall of the water channel. The metal connecting plate is made of metal, which can also transfer some of the heat of the shell to the water channel through the metal substrate. The metal substrate is connected to the shell and grounded through the metal connecting plate.

[0023] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An on-board charger, characterized in that, The device includes a housing (1), a power transistor (2), and a metal connecting plate (3). A water channel (11) is provided inside the housing (1). The power transistor (2) is located on one side of a metal substrate (4). The other side of the metal substrate is bonded to the side wall of the water channel (11) via a thermally conductive adhesive (5). The metal substrate (4) is connected to the bottom of the housing (1) via the metal connecting plate (3). A metal column (13) is provided at the bottom of the housing (1), and the metal column (13) has a vertical threaded hole (12). The metal connecting plate (3)... It includes a first connecting part (31) and a second connecting part (32). The first connecting part (31) is connected to the metal substrate (4). The second connecting part (32) is provided with through holes (33) corresponding to the threaded holes (12). One side of the second connecting part (32) is attached to the surface of the metal column (13) and is connected to the threaded holes (12) by screws passing through the through holes (33) in sequence. The metal connecting plate (3) is integrally formed, and multiple bending parts (34) are provided between the first connecting part (31) and the second connecting part (32).

2. The on-board charger according to claim 1, characterized in that, The metal substrate (4) is an aluminum substrate or a copper substrate.

3. The on-board charger according to claim 1, characterized in that, The thermally conductive adhesive (5) is a thermally conductive adhesive or a thermally conductive structural adhesive.

4. An electric vehicle, characterized in that, Includes the on-board charger as described in any one of claims 1 to 3.

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