A new energy vehicle high-voltage topology structure

Abstract

The utility model relates to the field of automobile manufacturing, concretely relates to a new energy automobile high pressure topological structure. Including battery package, electric drive three in one assembly, DC DC converter, vehicle charger OBC, air conditioner compressor and heater PTC, the power battery package is linked with electric drive three in one assembly, DC DC converter, vehicle charger OBC, air conditioner compressor and heater through high voltage line, and battery package is provided with vehicle high voltage connector, and battery package output end is socket end, is equipped with fuse, and wire harness end is plug, and the plug adopts 4 core line current connector, and headstock connection adopts straight push -pull type quick locking. The utility model greatly optimizes the whole car arrangement space in use process, shortens the wiring length between high voltage wire harness, reduces the investment cost of high voltage box and increased wire harness in the whole car development process.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, specifically to a high-voltage topology structure for new energy vehicles. Background Technology

[0002] With the global automotive industry moving towards intelligent, electric, and connected vehicles, the overall competitiveness of my country's new energy vehicles has been greatly enhanced. Pure electric vehicles, due to their fast power response and strong acceleration, have become a key development direction for new energy vehicles. Existing high-voltage architectures generally connect the power battery pack to a high-voltage distribution box, which in turn connects various high-voltage components. This architecture has stringent requirements for layout space. If the space is limited, not only is it difficult to install the high-voltage box itself, but it also increases the difficulty of high-voltage wiring, assembly difficulties, reduced production efficiency, increased winding length, and increased costs. The increased investment cost of the high-voltage box system itself, along with the increased cost of connectors and high-voltage wires, further increases the difficulty of fault detection and maintenance during future vehicle use. Utility Model Content

[0003] This utility model addresses the problems of complex wiring, increased wiring harness costs, and maintenance difficulties caused by integrating high-voltage distribution boxes to power high-voltage components. It proposes a high-voltage topology structure for new energy vehicles, suitable for applications with limited space and requiring optimized high-voltage wiring harness costs. The specific technical solution is as follows: A high-voltage topology for new energy vehicles includes a battery pack, an electric drive three-in-one assembly, a DC / DC converter, an on-board charger (OBC), an air conditioning compressor, and a heater (PTC). The power battery pack is connected to the electric drive three-in-one assembly, the DC / DC converter, the OBC, the air conditioning compressor, and the heater via high-voltage lines. The battery pack is equipped with an on-board high-voltage connector. The output end of the battery pack is a socket end equipped with a fuse, and the wiring harness end is a plug. The plug uses a 4-core current connector, and the headstock connection adopts a push-pull quick-locking method.

[0004] Furthermore, the battery pack output socket is connected to the positive and negative terminals of the DC / DC converter and the on-board charger (OBC), and is equipped with fuse socket A. Fuse socket A is connected in series with the plug on the high-voltage line of the DC / DC converter and the on-board charger (OBC) input terminal.

[0005] Furthermore, the battery pack output is connected to the positive and negative terminals of the electric drive unit and is equipped with fuse socket B, which is connected in series with the electric drive unit.

[0006] Furthermore, the battery pack output terminal is connected to the positive and negative terminals of the heater PTC and is equipped with a fuse socket C. The fuse socket C is connected in series with the plug on the high-voltage wiring harness at the input terminal of the heater PTC.

[0007] Furthermore, the output terminal of the power battery is connected to the positive and negative terminals of the air conditioning compressor, and is equipped with a fuse socket D. The fuse socket D is connected in series with the plug on the high-voltage wiring harness at the compressor input terminal.

[0008] Furthermore, the vehicle-mounted high-voltage connector includes an equipment-end connector and a wiring harness-end connector. The assembled wiring harness has multiple cable tie fixing points. The first cable tie fixing point is located no more than 130mm from the end of the wiring harness connector, and the spacing between subsequent cable tie fixing points is no more than 300mm. Cable bends are individually fixed. Moreover, during cable assembly, the wiring harness should not be pulled too tight to avoid tension between the fixing points during vehicle travel, which could lengthen the wiring harness, causing loose connections or even breakage of the wires.

[0009] In this invention, the high-voltage fuse sockets on the positive circuit of the structural components are independent of each other. That is, if a short-circuit fault occurs in a certain high-voltage component, the fuse on its corresponding circuit will immediately trip, protecting other high-voltage components and high-voltage wiring harnesses in the circuit and ensuring their normal operation. This invention significantly optimizes the overall vehicle layout space, shortens the wiring length between high-voltage harnesses, and reduces the investment cost of high-voltage boxes and additional wiring harnesses during vehicle development. Attached Figure Description

[0010] Figure 1 Schematic diagram of the high-voltage topology of this utility model; Figure 2 This utility model's high-voltage schematic diagram; Figure 3 This utility model provides a schematic diagram of the fixing point location for the cable tie.

[0011] Figure label: 1-Equipment end connector, 2-Wire harness end connector, 3-Cable tie fixing point. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1As shown, a high-voltage topology for a new energy vehicle includes a battery pack, an electric drive three-in-one assembly, a DC / DC converter, an on-board charger (OBC), an air conditioning compressor, and a heater (PTC). The power battery pack is connected to the electric drive three-in-one assembly, the DC / DC converter, the OBC, the air conditioning compressor, and the heater via high-voltage lines. The battery pack is equipped with an on-board high-voltage connector. The battery pack output end is a socket end equipped with a fuse, and the wiring harness end is a plug. The plug uses a 4-core current connector, and the headstock connection adopts a push-pull quick-locking method.

[0014] like Figure 2 As shown: The battery pack output socket is connected to the positive and negative terminals of the DC / DC converter and the on-board charger (OBC), and is equipped with fuse socket A. Fuse socket A is connected in series with the plug on the high-voltage line of the DC / DC converter and the on-board charger (OBC) input terminal; the battery pack output is connected to the positive and negative terminals of the electric drive unit, and is equipped with fuse socket B. Fuse socket B is connected in series with the electric drive unit; the battery pack output is connected to the positive and negative terminals of the heater (PTC), and is equipped with fuse socket C. Fuse socket C is connected in series with the plug on the high-voltage wiring harness of the heater (PTC) input terminal; the power battery output is connected to the positive and negative terminals of the air conditioning compressor, and is equipped with fuse socket D. Fuse socket D is connected in series with the plug on the high-voltage wiring harness of the compressor input terminal.

[0015] like Figure 3 As shown, the vehicle-mounted high-voltage connector includes a device-end connector 1 and a wiring harness-end connector 2. The assembled wiring harness has multiple cable tie fixing points 3. The first cable tie fixing point is located no more than 130mm from the end of the wiring harness connector, and the spacing between subsequent cable tie fixing points is no more than 300mm. Cable bends are fixed separately. Furthermore, during cable assembly, the wiring harness should not be pulled too tight to avoid tension between the fixing points during vehicle travel, which could lengthen the wiring harness, causing loose connections or even breakage of the wires.

[0016] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A high-voltage topology structure for new energy vehicles, characterized in that: It includes a battery pack, an electric drive three-in-one assembly, a DC / DC converter, an on-board charger (OBC), an air conditioning compressor, and a heater (PTC). The power battery pack is connected to the electric drive three-in-one assembly, the DC / DC converter, the on-board charger (OBC), the air conditioning compressor, and the heater via high-voltage lines. The battery pack is equipped with an on-board high-voltage connector. The battery pack output end is a socket end equipped with a fuse, and the wiring harness end is a plug. The plug uses a 4-core current connector, and the head connector uses a push-pull quick-locking method.

2. The high-voltage topology structure for new energy vehicles according to claim 1, characterized in that: The battery pack output socket is connected to the positive and negative terminals of the DC / DC converter and the on-board charger (OBC). It is equipped with fuse socket A, which is connected in series with the plug on the high-voltage line of the DC / DC converter and the on-board charger (OBC) input terminal.

3. The high-voltage topology structure for new energy vehicles according to claim 1, characterized in that: The battery pack output is connected to the positive and negative terminals of the electric drive unit, and is equipped with fuse socket B, which is connected in series with the electric drive unit.

4. The high-voltage topology structure for new energy vehicles according to claim 1, characterized in that: The battery pack output is connected to the positive and negative terminals of the heater PTC and is equipped with a fuse socket C. The fuse socket C is connected in series with the plug on the high-voltage harness at the input terminal of the heater PTC.

5. The high-voltage topology structure for new energy vehicles according to claim 1, characterized in that: The output terminal of the power battery is connected to the positive and negative terminals of the air conditioning compressor, and is equipped with a fuse socket D. The fuse socket D is connected in series with the plug on the high-voltage wiring harness at the input terminal of the compressor.

6. The high-voltage topology structure for new energy vehicles according to claim 1, characterized in that: The vehicle-mounted high-voltage connector includes an equipment-end connector and a wiring harness-end connector. The assembled wiring harness is provided with multiple cable tie fixing points. The first cable tie fixing point is located at a position no more than 130mm from the end of the wiring harness-end connector. The spacing between subsequent cable tie fixing points is no more than 300mm. The cable bends are fixed separately.

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