Highly expandable new energy vehicle high-voltage distribution box structure

Abstract

This utility model provides a highly expandable high-voltage power distribution box structure for new energy vehicles. The integrated design not only achieves the basic electric drive function of the high-voltage power distribution box but also saves manufacturing materials, facilitating integrated, lightweight, and miniaturized design, and improving assembly convenience and efficiency. It includes a housing, and relays, fuses, a copper plate, a PCB circuit board, and a low-voltage wiring harness fixed within the housing. An MCU circuit board is mounted on the top of the housing. The front side of the housing has a BAT interface for connecting the power battery, an MCU interface for connecting the motor, and a PTC heater interface. The rear side of the housing has a signal transmission interface and a slow-charging interface. The end housings have a fast-charging interface, an OBC connector, a DC connection interface for DC output, and a coolant interface.

Description

Technical Field

[0001] This utility model relates to New energy vehicle high voltage distribution box technology field In particular, it relates to a highly scalable high-voltage power distribution box structure for new energy vehicles. Background Technology

[0002] The high-voltage power distribution box (PDU) for new energy vehicles is a high-voltage, high-current distribution unit in the high-voltage system solution of new energy vehicles. It connects high-voltage components through busbars and wiring harnesses to provide high-voltage circuit distribution for the high-voltage system of new energy vehicles. The PDU can integrate functions such as MCU circuit, fast charging circuit, OBC-DCDC, and PTC control. Currently, PDUs are customized according to the needs of vehicle manufacturers, resulting in poor adaptability. The interface adaptability for platform-based models is even worse. PDUs are usually customized according to the needs of vehicle manufacturers, which makes them highly specialized. They are limited by the layout of the vehicle and the interface definition. If a new model needs to be redesigned to meet the installation and matching requirements of different environments, the mold cost will be high, the development cycle will be long, and the cost will be high. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a highly expandable high-voltage power distribution box structure for new energy vehicles. The integrated design can save manufacturing materials in addition to realizing the basic electric drive function of the high-voltage power distribution box, which is conducive to integrated design, lightweight design and miniaturization design, and improves the convenience and efficiency of assembly.

[0004] To achieve the objectives of this utility model, the technical solution adopted by this utility model is as follows:

[0005] Design a highly expandable high-voltage power distribution box for new energy vehicles, including a housing, and relays, fuses, copper plates, PCB circuit boards, and low-voltage wiring harnesses fixed inside the housing. An MCU circuit board is mounted on the top of the housing. The front side of the housing is equipped with a BAT interface for connecting the power battery, an MCU interface for connecting the motor, and a PTC heater interface. The rear side of the housing is equipped with a signal transmission interface and a slow charging interface for slow charging. The end housings are equipped with a fast charging interface for fast charging, an OBC connector, a DC connection interface for DC output, and a coolant interface.

[0006] The housing includes an upper housing and a lower housing, which are connected vertically and fixed together by bolts.

[0007] The MCU interface, BAT interface, and PTC heater interface are arranged in a linear, horizontal distribution and installed on the side of the housing.

[0008] The MCU interface, BAT interface, and PTC heater interface are mounted on the first replaceable panel, which is bolted to the side of the housing.

[0009] The first replaceable panel is mounted on the upper housing.

[0010] The fast charging interface is installed at the end of the upper housing.

[0011] The OBC connector, DC connection interface, and coolant interface are installed at the end of the lower housing.

[0012] The coolant interface includes a coolant inlet and a coolant outlet.

[0013] An exhaust valve communicating with the inner cavity of the housing is provided on the rear side of the housing.

[0014] The lower housing is provided with a fixed base at each of the four corners. The fixed base has openings, and the fixing bolts fix the housing through the openings.

[0015] The beneficial effects of this utility model are as follows:

[0016] The high-voltage distribution box in this design adopts an integrated design, providing the possibility of highly expandable interface definition, reducing the types of PDUs, saving mold development costs, lowering product development costs, and meeting the possibility of platform-based applications. At the same time, the high-voltage distribution box layout provided by this patent can save manufacturing materials in addition to realizing the basic electric drive function of the high-voltage distribution box, which is conducive to integrated design, lightweight design, and miniaturization design, and improves the convenience of assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the highly expandable high-voltage power distribution box structure for new energy vehicles according to this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Example 1: A highly scalable high-voltage power distribution box structure for new energy vehicles, see [link / reference] Figure 1 , Figure 2 .

[0021] It includes a housing, and relays, fuses, copper plates, PCB circuit boards, and low-voltage wiring harnesses fixed inside the housing. In this design, an MCU circuit board 8 is installed on the top of the housing; a BAT interface 4 for connecting the power battery, an MCU interface 3 for connecting the motor, and a PTC heater interface 5 are installed on the front side of the housing; a signal transmission interface 17 and a slow charging interface 16 for slow charging are installed on the rear side of the housing; and a fast charging interface 9 for fast charging, an OBC connector 10, a DC connection interface 11 for DC output, and a coolant interface are installed on the end housing.

[0022] In this embodiment, the housing comprises an upper housing 1 and a lower housing 2, which are bolted together. The MCU interface 3, BAT interface 4, and PTC heater interface 5 are arranged horizontally in a linear fashion on the side of the upper housing 1. These interfaces are also mounted on a first replaceable panel 6, which is bolted to the upper housing 1. This first replaceable panel 6 allows for quick installation without requiring replacement of the housing, eliminating the need for remolding. Similarly, the signal transmission interface 17 and the slow charging interface 16 are mounted on the first replaceable panel 15.

[0023] Furthermore, in this embodiment, the fast charging interface 9 is installed at the end of the upper housing 1, and the OBC connector 10, DC connection interface 11, and coolant interface are installed at the end of the lower housing 2; the coolant interface includes a coolant inlet 12 and a coolant outlet 12 for cooling the inside of the housing.

[0024] An exhaust valve 14 communicating with the inner cavity of the housing is provided on the rear side of the housing described above.

[0025] The lower housing 4 described above is provided with a fixed base 7 at each of its four corners. The fixed base 7 has openings, and the fixing bolts fix the housing through the openings.

[0026] It should be noted that the above embodiments of the present invention only illustrate the structural design of the housing and its various interfaces, and do not involve electrical connection relationships. Therefore, for those skilled in the art, the connection relationships of the above structures are conventional technology in the field, and will not be described in detail here.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A high-expansion new energy vehicle high-voltage distribution box structure, comprising a shell, and a relay, a fuse, a copper plate, a PCB circuit board, and a low-voltage wire harness fixed in the shell, characterized in that: An MCU circuit board is mounted on the top of the housing; a BAT interface for connecting the power battery, an MCU interface for connecting the motor, and a PTC heater interface are mounted on the front side of the housing; a signal transmission interface and a slow charging interface are mounted on the rear side of the housing; a fast charging interface, an OBC connector, a DC connection interface for DC output, and a coolant interface are mounted on the end of the housing. The MCU interface, BAT interface, and PTC heater interface are arranged in a linear, horizontal distribution on the side of the housing; specifically, the MCU interface, BAT interface, and PTC heater interface are mounted on a first replaceable panel, which is bolted to the side of the housing.

2. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 1, wherein: The housing includes an upper housing and a lower housing, which are connected vertically and fixed together by bolts.

3. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 2, characterized in that: The first replaceable panel is mounted on the upper housing.

4. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 2, characterized in that: The fast charging interface is installed at the end of the upper housing.

5. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 2, characterized in that: The OBC connector, DC connection interface, and coolant interface are installed at the end of the lower housing.

6. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 1, wherein: The coolant interface includes a coolant inlet and a coolant outlet.

7. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 1, wherein: An exhaust valve communicating with the inner cavity of the housing is provided on the rear side of the housing.

8. The high-expansion new energy vehicle high-voltage power distribution box structure of claim 2, characterized in that: The lower housing is provided with a fixed base at each of the four corners. The fixed base has openings, and the fixing bolts fix the housing through the openings.

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