Heat dissipation device for power tube of electric vehicle controller

Abstract

The utility model relates to the technical field of electric vehicle controllers, in particular to a power tube heat dissipation device of an electric vehicle controller, which comprises a base, an outer casing, end covers, pressing screws, a contact seat and a circuit board assembly, the outer casing is mounted on the upper surface of the base, and the end covers are fixedly mounted at two ends of the outer casing. According to the power tube heat dissipation device of the electric vehicle controller, in the installation process of the controller, pressure is applied to the contact plate through the pressure applying cover, the copper contact plate is attached to the surface of the power tube, the power tube is tightly attached to the contact plate through the pressure applying cover, and the power tube is tightly attached to the contact plate through the pressure applying cover. Heat generated by the power tube is effectively absorbed and transmitted, is better transmitted to the outer housing through transmission of the heat conduction seat and the contact seat, and is dissipated to the air through the cooling fins on the surface of the outer housing, so that the heat conduction and heat dissipation speed is effectively improved, and the service life of the power tube is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle controller technology, and in particular to a heat dissipation device for the power tube of an electric vehicle controller. Background Technology

[0002] The main function of the electric vehicle controller is to control the starting, running, forward and reverse movement, speed, and stopping of the electric vehicle's motor, as well as to manage other electronic components of the electric vehicle. It is the core control device of the electric vehicle, equivalent to its "brain," responsible for coordinating and controlling various operations.

[0003] The most serious heat-generating component inside an electric vehicle controller is the power transistor. To prevent the power transistor from affecting other electronic components, it is usually mounted vertically at one end of the circuit board. Existing electric vehicle controllers mainly dissipate heat through heat sinks on the outside of the casing, but the heat dissipation effect is not ideal, which makes the power transistor easily damaged due to high temperature. Utility Model Content

[0004] This utility model addresses the deficiencies in the prior art by providing a heat dissipation device for the power tube of an electric vehicle controller.

[0005] This utility model is achieved through the following technical solution:

[0006] A heat dissipation device for a power transistor in an electric vehicle controller includes a base, an outer casing, end caps, pressure screws, contact seats, and a circuit board assembly. The outer casing is mounted on the upper surface of the base, the end caps are fixedly mounted to both ends of the outer casing, the pressure screws are threadedly connected to the outer casing, the contact seats are snapped into the inner side of the outer casing, and the circuit board assembly is mounted on the upper surface of the base. The circuit board assembly includes a circuit board base, a heat-conducting seat, a contact plate, a power transistor, and a pressure cover. The circuit board base is fixedly mounted to the base, the power transistor is mounted inside one side of the circuit board base, the heat-conducting seat is snapped into the outer side of the circuit board base, the contact plate is fixedly connected to the heat-conducting seat, and the pressure cover is snapped into the inner side of the circuit board base.

[0007] In a preferred embodiment of the present invention, a heat sink is provided on the surface of the outer casing, a heat conduction sheet is provided on the outer side of the contact seat, the heat conduction sheet on the outer side of the contact seat is snapped into the heat sink of the outer casing, and a slot is provided on one side of the outer casing to cooperate with the contact seat and its outer heat conduction sheet.

[0008] In a preferred embodiment of this utility model, one end of the pressure screw penetrates and extends into the interior of one side of the outer casing, and its end contacts the contact seat;

[0009] After installation, apply pressure to the contact seat using the pressure screws to push the contact seat inward until it is in contact with the heat-conducting plate. This allows the internal temperature to be effectively transferred to the contact seat, and then the heat is transferred to the outer casing through the contact seat. Finally, the heat is dissipated into the outside air through the heat sink on the surface of the outer casing.

[0010] In a preferred embodiment of the present invention, one end of the contact plate extends through and into the interior of one side of the circuit board base, and the circuit board base has an insertion hole that mates with the contact plate. The contact plate and the heat-conducting base are made of copper.

[0011] In a preferred embodiment of this utility model, the inner side of the contact seat is in contact with the outer side of the heat-conducting seat;

[0012] In a preferred embodiment of the present invention, a slot is provided inside the inner side of the circuit board base to cooperate with the pressure cover. The pressure cover applies pressure to the contact plate to make it bend, and one side of the contact plate is squeezed and bent to fit against the outer surface of the power tube.

[0013] The pressure cover squeezes the contact plate, making it fit against the power transistor. This allows the copper contact plate to better absorb and conduct the heat generated by the power transistor, thus transferring and dissipating the heat into the air more quickly, achieving the effect of cooling the power transistor.

[0014] The beneficial effects of this utility model are:

[0015] During the installation of the electric vehicle controller, the power tube heat dissipation device applies pressure to the contact plate through a pressure cover, causing the copper contact plate to adhere to the surface of the power tube. This effectively absorbs and transfers the heat generated by the power tube, and further transfers the heat to the outer casing through the heat conduction seat and the contact seat. Finally, the heat is dissipated into the air through the heat sink on the surface of the outer casing, effectively improving the heat conduction and heat dissipation speed and extending the service life of the power tube. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the power tube heat dissipation device for the electric vehicle controller of this utility model.

[0017] Figure 2 This is a schematic diagram of the outer casing structure of the power tube heat dissipation device for the electric vehicle controller of this utility model.

[0018] Figure 3 This is a schematic diagram of the main structure of the outer shell of the power tube heat dissipation device for the electric vehicle controller of this utility model.

[0019] Figure 4 This is a schematic diagram of the circuit board assembly structure of the power tube heat dissipation device for the electric vehicle controller of this utility model.

[0020] Figure 5This is a schematic diagram of the contact plate mounting structure of the power tube heat dissipation device for the electric vehicle controller of this utility model.

[0021] In the diagram: 1. Base; 2. Outer casing; 3. End cap; 4. Pressure screw; 5. Contact seat; 6. Circuit board assembly; 61. Circuit board base; 62. Heat-conducting seat; 63. Contact plate; 64. Power transistor; 65. Pressure cover. Detailed Implementation

[0022] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.

[0023] like Figure 1-5 The electric vehicle controller power tube heat dissipation device shown includes a base 1, an outer shell 2, an end cap 3, a pressure screw 4, a contact seat 5, and a circuit board assembly 6. The outer shell 2 is installed on the upper surface of the base 1. The end cap 3 is installed and fixed to both ends of the outer shell 2. The pressure screw 4 is threadedly connected to the outer shell 2. The contact seat 5 is snapped into the inner side of the outer shell 2. The circuit board assembly 6 is installed on the upper surface of the base 1. The circuit board assembly 6 includes a circuit board base 61, a heat-conducting seat 62, a contact plate 63, a power tube 64, and a pressure cover 65. The circuit board base 61 is installed and fixed to the base 1. The power tube 64 is installed inside one side of the circuit board base 61. The heat-conducting seat 62 is snapped into the outer side of the circuit board base 61. The contact plate 63 is fixedly connected to the heat-conducting seat 62. The pressure cover 65 is snapped into the inner side of the circuit board base 61.

[0024] Specifically, the outer casing 2 has heat sinks on its surface, and the contact seat 5 has heat-conducting plates on its outer side. The heat-conducting plates on the outer side of the contact seat 5 are fitted into the heat sinks of the outer casing 2. A slot is provided inside one side of the outer casing 2 to cooperate with the contact seat 5 and its outer heat-conducting plates. One end of the pressure screw 4 passes through and extends into the inner side of the outer casing 2, and its end contacts the contact seat 5. One end of the contact plate 63 passes through and extends into the inner side of the circuit board base 61. A hole is provided on one side of the circuit board base 61 to cooperate with the contact plate 63. The contact plate 63 and the heat-conducting seat 62 are made of copper. The inner side of the contact seat 5 is in contact with the outer side of the heat-conducting seat 62. A slot is provided inside the inner side of the circuit board base 61 to cooperate with the pressure cover 65. The pressure cover 65 applies pressure to the contact plate 63 to make it bend. One side of the contact plate 63 is squeezed and bent to fit against the outer surface of the power tube 64.

[0025] In this embodiment, the power transistor 64 is first installed inside one side of the circuit board base 61. Then, the contact plate 63 is snapped into the socket on one side of the circuit board base 61. After the other electronic components on the surface of the circuit board base 61 are installed, the circuit board base 61 is installed on the upper surface of the base 1. Then, the pressure cover 65 is installed. After the pressure cover 65 is snapped into the slot inside one side of the circuit board base 61, the inside of the pressure cover 65 will squeeze the contact plate 63. The thin copper contact plate 63 is relatively soft. After being deformed by pressure, it will fit against the outside of the power transistor 64.

[0026] Furthermore, after installing the outer casing 2 and end cap 3, rotate the pressure screw 4. As the pressure screw 4 is screwed in, its end will push the contact seat 5 inward until the inner side of the contact seat 5 is in contact with the outer surface of the heat-conducting seat 62. In this way, after the power tube 64 generates heat, it will be absorbed by the contact plate 63 and quickly transferred to the heat-conducting seat 62. The heat-conducting seat 62 and the contact seat 5 are in contact over a large area, and the heat will be transferred to the contact seat 5. It will then be held in place by the heat-conducting sheet on the outside of the contact seat 5 into the heat sink on the outside of the outer casing 2. This allows the heat to be quickly dissipated through the heat sink on the outside of the outer casing 2, thereby achieving rapid heat dissipation, protecting the power tube 64, and effectively extending the service life of the controller.

[0027] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.

[0028] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A heat dissipation device for power tube of electric vehicle controller, comprising a base (1), an outer shell (2), an end cover (3), a pressing screw (4), a contact seat (5) and a circuit board assembly (6), characterized in that: The outer shell (2) is installed on the upper surface of the base (1), the end cover (3) is fixedly installed at both ends of the outer shell (2), the pressing screw (4) is connected with the outer shell (2) through threads, the contact seat (5) is clamped on the inner side of the outer shell (2), and the circuit board assembly (6) is installed on the upper surface of the base (1). The circuit board assembly (6) comprises a circuit board base (61), a heat conduction seat (62), a contact plate (63), a power tube (64) and a pressing cover (65), the circuit board base (61) is fixedly installed on the base (1), the power tube (64) is installed on one side of the inner side of the circuit board base (61), the heat conduction seat (62) is clamped on the outer side of the circuit board base (61), the contact plate (63) is fixedly connected with the heat conduction seat (62), and the pressing cover (65) is clamped on the inner side of the circuit board base (61).

2. The electric vehicle controller power tube heat sink device of claim 1, wherein: The outer shell (2) is provided with a heat dissipation fin on the surface, the contact seat (5) is provided with a heat conduction fin on the outer side, the heat conduction fin on the outer side of the contact seat (5) is clamped on the heat dissipation fin of the outer shell (2), and the inner side of one side of the outer shell (2) is provided with a clamping groove matched with the contact seat (5) and the heat conduction fin on the outer side thereof.

3. The electric vehicle controller power tube heat sink device of claim 1, wherein: One end of the pressing screw (4) penetrates and extends to the inner side of one side of the outer shell (2), and the end is in contact with the contact seat (5).

4. The electric vehicle controller power tube heat sink device of claim 1, wherein: One end of the contact plate (63) penetrates and extends to the inner side of one side of the circuit board base (61), one side of the circuit board base (61) is provided with a jack matched with the contact plate (63), and the contact plate (63) and the heat conduction seat (62) are made of copper.

5. The electric vehicle controller power tube heat sink device of claim 1, wherein: The inner side of the contact seat (5) is in contact with the outer side of the heat conduction seat (62).

6. The electric vehicle controller power tube heat sink device of claim 1, wherein: The inner side of the circuit board base (61) is provided with a jack matched with the pressing cover (65), the pressing cover (65) presses the contact plate (63) to make it bent, and one side of the contact plate (63) is pressed and bent to be in contact with the outer surface of the power tube (64).

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