Circuit board structure of electric vehicle controller and electric vehicle controller

Abstract

The utility model discloses an electric vehicle controller circuit board structure and an electric vehicle controller, the electric vehicle controller circuit board structure comprises an MOS tube circuit board and a capacitor circuit board, the capacitor circuit board and the MOS tube circuit board have an overlapped part in the horizontal direction, the height of the capacitor circuit board is higher than that of the MOS tube circuit board, and the MOS tube circuit board is electrically connected with the capacitor circuit board. The capacitor circuit board adopts the electrolytic capacitor and can be manufactured independently, so that the production cost of the electric vehicle controller circuit board is reduced, and the production process is simple.

Description

Technical Field

[0001] This application relates to the field of electric vehicle controller technology, and in particular to an electric vehicle controller circuit board structure and an electric vehicle controller. Background Technology

[0002] For example, in the electric vehicle controller in CN219802926U, 18 MOSFETs and capacitors are fixedly mounted and electrically connected on the PCBA circuit board, resulting in a complex PCBA circuit board structure, high manufacturing cost and poor reliability of processing technology when carrying large currents. Utility Model Content

[0003] To address the aforementioned issues, this application provides a circuit board structure and an electric vehicle controller.

[0004] The circuit board structure and electric vehicle controller provided in this application adopt the following technical solution:

[0005] An electric vehicle controller circuit board structure includes a MOSFET circuit board and a capacitor circuit board. The capacitor circuit board and the MOSFET circuit board have an overlapping portion in the horizontal direction. The height of the capacitor circuit board is higher than that of the MOSFET circuit board. The MOSFET circuit board and the capacitor circuit board are electrically connected.

[0006] Furthermore, the capacitors on the capacitor circuit board are electrolytic capacitors.

[0007] Furthermore, multiple MOSFETs are fixedly mounted and electrically connected on the MOSFET circuit board.

[0008] Furthermore, multiple first capacitors are fixedly mounted and electrically connected on the MOS transistor circuit board. The multiple first capacitors are arranged along the width direction of the MOS transistor circuit board and are fixedly mounted on the edge of the MOS transistor circuit board.

[0009] Furthermore, multiple second capacitors are fixedly mounted and electrically connected on the capacitor circuit board.

[0010] Furthermore, two conductive plates are fixed between the capacitor circuit board and the MOSFET circuit board. The two conductive plates are located within the overlapping portion and are respectively located on both sides of a second capacitor. Both the capacitor circuit board and the MOSFET circuit board are electrically connected to the conductive plates.

[0011] An electric vehicle controller includes: the aforementioned electric vehicle controller circuit board structure, a top cover, an aluminum base, the top cover being fixedly connected to the aluminum base, a MOSFET circuit board and a capacitor circuit board being disposed on the aluminum base, and screws connecting the capacitor circuit board, the MOSFET circuit board and the aluminum base.

[0012] Furthermore, a positioning step is provided inside the aluminum base, and a protrusion is provided on the positioning step. A groove is provided in the width direction of the capacitor circuit board, and the groove is positioned within the protrusion.

[0013] Furthermore, the MOSFET circuit board is connected to the aluminum base.

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

[0015] The capacitor circuit board and the MOSFET circuit board are set up separately. The capacitor circuit board can use electrolytic capacitors, while the MOSFET circuit board uses traditional SMT process, so there is no need to worry about capacitor failure, which reduces production costs and ensures high reliability. Attached Figure Description

[0016] Figure 1 This utility model has a three-dimensional circuit board structure. Figure 1 ;

[0017] Figure 2 This utility model has a three-dimensional circuit board structure. Figure 2 ;

[0018] Figure 3 This is a bottom view of the circuit board structure of this utility model;

[0019] Figure 4 This is a top view of the circuit board structure of this utility model;

[0020] Figure 5 This is a perspective view of the electric vehicle controller after the top cover has been removed.

[0021] Figure 6 This is a perspective view of the electric vehicle controller of this utility model;

[0022] Explanation of reference numerals in the attached drawings: Electric vehicle controller circuit board structure (1), MOS transistor circuit board (11), capacitor circuit board (12), MOS transistor (111), first capacitor (112), second capacitor (121), conductive sheet (13), electric vehicle controller (2), top cover (21), aluminum base (22), positioning step (221), protrusion (222), groove (122). Detailed Implementation

[0023] like Figure 1 and Figure 3 As shown, an electric vehicle controller circuit board structure (1) includes a MOS transistor circuit board (11) and a capacitor circuit board (12). The capacitor circuit board (12) and the MOS transistor circuit board (11) have an overlapping portion in the horizontal direction. The height of the capacitor circuit board (12) is higher than that of the MOS transistor circuit board (11). The MOS transistor circuit board (11) and the capacitor circuit board (12) are electrically connected.

[0024] like Figure 2 As shown, multiple MOS transistors (111) are fixedly mounted and electrically connected on the MOS transistor circuit board (11).

[0025] Furthermore, a plurality of first capacitors (112) are fixedly mounted and electrically connected on the MOS transistor circuit board (11). The plurality of first capacitors (112) are arranged along the width direction of the MOS transistor circuit board (11) and are fixedly mounted on the edge of the MOS transistor circuit board (11).

[0026] Furthermore, multiple second capacitors (121) are fixedly mounted and electrically connected on the capacitor circuit board (12).

[0027] Furthermore, two conductive sheets (13) are fixed between the capacitor circuit board (12) and the MOS transistor circuit board (11). The two conductive sheets (13) are located in the overlapping part, and the two conductive sheets (13) are located on both sides of a second capacitor (121).

[0028] like Figure 5 and Figure 6 As shown, an electric vehicle controller (2) includes: the electric vehicle controller circuit board structure (1) mentioned above, a top cover (21), an aluminum base (22), the top cover (21) and the aluminum base (22) are fixedly connected, a MOS transistor circuit board (11) and a capacitor circuit board (12) are disposed on the aluminum base (22), and screws connect the MOS transistor circuit board (11) and the aluminum base (22).

[0029] like Figure 4 As shown, a positioning step (221) is provided inside the aluminum base (22), and a protrusion (222) is provided on the positioning step (221). A groove (122) is provided in the width direction of the capacitor circuit board (12), and the groove (122) is positioned in the protrusion (222).

[0030] Furthermore, the MOS transistor circuit board (11) is connected to the aluminum base (22).

[0031] The principle of this utility model is:

[0032] The capacitor circuit board is separated from the electric vehicle controller circuit board to form an independent circuit board. It is fixed to the aluminum base with screws. The capacitor circuit board, the high-current conductive busbar, and the lower MOSFET circuit board are clamped together, and the conductive lines on the capacitor circuit board are connected to the high-current conductive busbar. Then, the high-current conductive busbar is connected to the conductive lines on the lower MOSFET circuit board to form a complete high-current connection circuit.

[0033] Because the lower-level MOSFET circuit board must use SMT (Surface Mount Technology) assembly, which requires very high temperatures, the electrolyte inside ordinary electrolytic capacitors will expand and liquefy at high temperatures, causing the capacitors to fail. Therefore, electrolyte-free solid-state electrolytic capacitors must be used, but solid-state capacitors are very expensive. Alternatively, ordinary capacitors can be placed on the upper-level motherboard design, with reserved connection devices, resulting in high material and production costs.

[0034] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention.

Claims

1. A circuit board structure for an electric vehicle controller, characterized in that: It includes a MOSFET circuit board and a capacitor circuit board. The capacitor circuit board and the MOSFET circuit board have an overlap in the horizontal direction. The height of the capacitor circuit board is higher than that of the MOSFET circuit board. The MOSFET circuit board and the capacitor circuit board are electrically connected.

2. The electric vehicle controller circuit board structure according to claim 1, characterized in that: The capacitors on the capacitor circuit board are electrolytic capacitors.

3. The electric vehicle controller circuit board structure according to claim 2, characterized in that: Multiple MOSFETs are fixedly mounted and electrically connected on the MOSFET circuit board.

4. The electric vehicle controller circuit board structure according to claim 3, characterized in that: Multiple first capacitors are fixedly mounted and electrically connected on the MOS transistor circuit board. The multiple first capacitors are arranged along the width direction of the MOS transistor circuit board and are fixedly mounted on the edge of the MOS transistor circuit board.

5. The electric vehicle controller circuit board structure according to claim 4, characterized in that: Multiple second capacitors are fixedly mounted and electrically connected on the capacitor circuit board.

6. The electric vehicle controller circuit board structure according to claim 5, characterized in that: Two conductive plates are fixed between the capacitor circuit board and the MOSFET circuit board. The two conductive plates are located in the overlapping part and are located on both sides of a second capacitor. Both the capacitor circuit board and the MOSFET circuit board are electrically connected to the conductive plates.

7. An electric vehicle controller, characterized in that... include: The electric vehicle controller circuit board structure as described in any one of claims 1-6 includes an upper cover, an aluminum base, the upper cover being fixedly connected to the aluminum base, a MOS transistor circuit board and a capacitor circuit board being disposed on the aluminum base, and screws connecting the capacitor circuit board, the MOS transistor circuit board and the aluminum base.

8. The electric vehicle controller according to claim 7, characterized in that: The aluminum base has a positioning step with a protrusion. The capacitor circuit board has a groove in the width direction, and the groove is positioned within the protrusion.

9. The electric vehicle controller according to claim 8, characterized in that: The MOSFET circuit board is connected to the aluminum base.

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