A high-voltage power distribution system for new energy vehicles

Abstract

The utility model provides a new energy automobile high -voltage distribution system belongs to automobile high -voltage distribution system field, including power battery, charging interface module, power conversion module, high -voltage distribution box, drive module and load, and charging interface module adopts alternating current charging socket. Power conversion module adopts charging two in one assembly. Drive module adopts electric drive three in one assembly. Load includes electric compressor, water heating heater and wind heating heater. High -voltage distribution box is connected power battery, charging two in one assembly, electric compressor, wind heating heater and water heating heater through fast insertion type high -voltage connector respectively. High -voltage distribution box is connected electric drive three in one assembly through IPT screw connection connector. High -voltage distribution box adopts cast aluminium alloy box and upper cover. The utility model reduces the cost of car, improves the reliability of electrical connection simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of automotive high-voltage power distribution systems. Specifically, this utility model relates to a high-voltage power distribution system for new energy vehicles. Background Technology

[0002] With the rapid development of new energy vehicles in recent years, their safety and cost have become increasingly important concerns for users and automakers. High-voltage distribution boxes, as a crucial component of new energy vehicles, are key to ensuring the safety of personnel and the safe operation of vehicle equipment.

[0003] Chinese Patent 120222086A relates to a high-voltage power distribution box and an automobile, including a quick-connect connector and a gland connector. The quick-connect connector is used to connect the positive and negative terminals of the battery side of the high-voltage power distribution box to the positive and negative terminals of a battery system including several battery boxes. The gland connector is used to connect the positive and negative terminals of the output side of the high-voltage power distribution box to the positive and negative terminals of the electrical equipment. The positive and negative terminals of the battery side and the output side of the high-voltage power distribution box are respectively connected inside the high-voltage power distribution box. Using a quick-connect connector for the interface connecting the high-voltage power distribution box to the battery system allows for quick plugging and unplugging when the power is off, making it safer to use. Using gland connectors for the interfaces connecting the high-voltage power distribution box to the charging interface and the motor controller interface makes the connection more secure and reliable, adaptable to complex and changing operating conditions.

[0004] Existing technologies use quick-connect connectors, which are expensive, have poor connection reliability, increase vehicle costs, and compromise safety. Utility Model Content

[0005] The present invention aims to provide a high-voltage power distribution system for new energy vehicles, so as to reduce vehicle costs and improve connection reliability.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a high-voltage power distribution system for new energy vehicles, including a power battery, a charging interface module, a power conversion module, a high-voltage distribution box, a drive module, and a load. The power battery is connected to the charging interface module, the charging interface module is connected to the power conversion module, the power battery is connected to the power conversion module through the high-voltage distribution box, and the power conversion module is connected to the drive module and the load.

[0008] The charging interface module uses an AC / DC charging socket.

[0009] The power conversion module adopts a charging and charging assembly.

[0010] The drive module adopts an electric drive three-in-one assembly.

[0011] The load includes an electric compressor, a water heater, and a fan heater.

[0012] The high-voltage distribution box is connected to the power battery, the charging assembly, the electric compressor, the air heater, and the water heater via quick-connect high-voltage connectors.

[0013] The high-voltage distribution box is connected to the electric drive three-in-one assembly via an IPT screw connector.

[0014] The high-voltage distribution box uses a cast aluminum alloy enclosure and top cover.

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

[0016] (1) In this utility model, the high voltage distribution box and the electric drive three-in-one assembly are connected by IPT screw connector, which makes the connection stable and reduces the failure rate, and the cost is lower than that of quick-connect high voltage connector.

[0017] (2) This utility model has the advantages of precise high-voltage power distribution and reliable electrical safety protection. This utility model realizes centralized power distribution of the power battery through a high-voltage distribution box, which can accurately deliver electrical energy to different loads and modules such as electric compressor, air heater, water heater and electric drive three-in-one assembly, ensuring stable power supply to each component; at the same time, fuses are installed in the high-voltage wiring harnesses connecting the power battery and the charging two-in-one assembly, electric compressor, air heater and water heater. When a short circuit, overload or other fault occurs in the circuit, the fuse can quickly melt to cut off the fault circuit, avoiding the fault from expanding and causing safety risks such as damage to the power battery, burnout of the load or fire. This ensures the electrical safety of the entire vehicle's high-voltage system from the power distribution head.

[0018] (3) This utility model has the advantages of strong vibration resistance and high long-term reliability of key component connections. In this utility model, the high-voltage distribution box and the electric drive three-in-one assembly are connected by IPT screw-type connectors. Compared with traditional plug-in connectors, the IPT screw-type connector enhances the connection strength through the threaded fastening structure, which can effectively resist vibration and bumps during vehicle operation and prevent the connection from loosening or breaking. This connection method can ensure the continuous and stable power transmission from the high-voltage distribution box to the electric drive three-in-one assembly, avoid the electric drive system from shutting down and the whole vehicle from losing power due to connection failure, and thus ensure the connection reliability during long-term use, significantly improving the safe operation level of the whole vehicle. Attached Figure Description

[0019] This manual includes the following figures, which illustrate the following:

[0020] Figure 1 This is a logical structure block diagram of a high-voltage power distribution system for new energy vehicles according to this utility model;

[0021] Figure 2 This is an electrical connection diagram of a high-voltage power distribution system for new energy vehicles according to this utility model;

[0022] Figure 1 The components are labeled as follows: 1. Power battery; 2. Charging interface module; 3. Power conversion module; 4. High voltage distribution box; 5. Drive module; 6. Load. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0024] This utility model provides a high-voltage power distribution system for new energy vehicles, including a power battery, a charging interface module, a power conversion module, a high-voltage distribution box, a drive module, and a load. The power battery is connected to the charging interface module, the charging interface module is connected to the power conversion module, the power battery is connected to the power conversion module through the high-voltage distribution box, and the power conversion module is connected to the drive module and the load respectively.

[0025] The charging interface module uses an AC / DC charging socket. The power conversion module uses a two-in-one charging assembly. The drive module uses a three-in-one electric drive assembly. The loads include an electric compressor, a water heater, and a fan heater. The high-voltage distribution box connects to the power battery, the two-in-one charging assembly, the electric compressor, the fan heater, and the water heater via quick-connect high-voltage connectors. The high-voltage distribution box connects to the three-in-one electric drive assembly via IPT screw-type connectors. The high-voltage distribution box uses a cast aluminum alloy housing and top cover.

[0026] The present invention provides a high-voltage power distribution system for new energy vehicles, comprising a power battery, a charging interface module, a power conversion module, a high-voltage distribution box, a drive module, and a load. The charging interface module uses an AC / DC charging socket for connecting an external charging gun. The power battery in this invention can receive charging from AC or DC power sources.

[0027] The power conversion module adopts a charging-in-one assembly, which is an integration of an on-board charger and a DC-DC converter. It is used to convert AC power to DC power to charge the power battery when the charging power source is AC power.

[0028] The high-voltage distribution box is used for power distribution of the power battery. At the same time, the fuse in the high-voltage wiring harness in the high-voltage distribution box protects the electrical safety of the vehicle. When a circuit failure occurs, the wiring harness melts to prevent the danger from spreading.

[0029] The drive module adopts an integrated electric drive assembly, which combines a drive motor, a motor controller, and a reducer, to convert the electrical energy from the power battery into the mechanical energy required for vehicle operation. In this invention, the high-voltage distribution box is connected to the integrated electric drive assembly via an IPT screw-type connector, which provides stronger vibration resistance, prevents disconnection between the high-voltage distribution box and the integrated electric drive assembly, ensures reliable long-term connection, and improves the safety and reliability of the vehicle.

[0030] The load in this invention includes an electric compressor, a water heater, and a fan heater.

[0031] The connection relationships of this utility model are described in detail below.

[0032] like Figure 1 As shown, the AC / DC charging sockets are connected to the power battery and the charging assemblies via quick-connect high-voltage connectors, respectively. The high-voltage distribution box is connected to the power battery, the charging assemblies, the electric compressor, the fan heater, and the water heater via quick-connect high-voltage connectors. The high-voltage distribution box is connected to the electric drive assembly via IPT screw connectors. The power battery is connected to the charging assemblies, electric compressor, fan heater, water heater, and electric drive assembly via high-voltage wiring harnesses in the high-voltage distribution box. Fuses are installed in the high-voltage wiring harnesses connecting the power battery to the charging assemblies, electric compressor, fan heater, and water heater. The fan heater is a fan-type PTC heater, and the water heater is a water-type PTC heater.

[0033] The working process of this utility model is described in detail below.

[0034] When the AC / DC charging socket is connected to an external DC charging pile, the DC charging pile directly charges the power battery; when the AC / DC charging socket is connected to an external AC charging pile, the AC charging pile converts the power of the charging two-in-one assembly into DC power to charge the power battery, and the power battery outputs power to the electric compressor, air heater, water heater and electric drive three-in-one assembly through the high voltage distribution box.

[0035] The beneficial effects of this utility model are described in detail below.

[0036] In this invention, the high-voltage distribution box and the electric drive three-in-one assembly are connected by an IPT screw connector, which ensures a stable connection, reduces the failure rate, and has a lower cost compared to quick-connect high-voltage connectors.

[0037] This invention offers the advantages of precise high-voltage power distribution and reliable electrical safety protection. It achieves centralized power distribution from the power battery through a high-voltage distribution box, accurately delivering electrical energy to different loads and modules such as the electric compressor, air heater, water heater, and electric drive three-in-one assembly, ensuring stable power supply to each component. Simultaneously, fuses are installed in the high-voltage wiring harnesses connecting the power battery to the charging two-in-one assembly, electric compressor, air heater, and water heater. When a short circuit or overload occurs, the fuses quickly melt to cut off the fault circuit, preventing the fault from escalating and causing safety risks such as power battery damage, load burnout, or fire. This ensures the electrical safety of the entire vehicle's high-voltage system from the power distribution head.

[0038] This invention features strong vibration resistance and high long-term reliability in key component connections. The high-voltage distribution box and the electric drive three-in-one assembly are connected using an IPT screw-type connector. Compared to traditional plug-in connectors, the IPT screw-type connector enhances connection strength through its threaded fastening structure, effectively resisting vibrations and bumps during vehicle operation and preventing loosening or disconnection. This connection method ensures a continuous and stable power transmission from the high-voltage distribution box to the electric drive three-in-one assembly, preventing the electric drive system from shutting down and the entire vehicle from losing power due to connection failure. This guarantees connection reliability during long-term use and significantly improves the overall vehicle safety.

[0039] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A high-voltage power distribution system for new energy vehicles, characterized in that: It includes a power battery, a charging interface module, a power conversion module, a high-voltage distribution box, a drive module, and a load. The power battery is connected to the charging interface module, which is connected to the power conversion module. The power battery is connected to the power conversion module through the high-voltage distribution box, and the power conversion module is connected to both the drive module and the load.

2. The high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The charging interface module uses an AC / DC charging socket.

3. The high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The power conversion module adopts a charging and charging assembly.

4. A high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The drive module adopts an electric drive three-in-one assembly.

5. A high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The load includes an electric compressor, a water heater, and a fan heater.

6. A high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The high-voltage distribution box is connected to the power battery, the charging assembly, the electric compressor, the air heater, and the water heater via quick-connect high-voltage connectors.

7. A high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The high-voltage distribution box is connected to the electric drive three-in-one assembly via an IPT screw connector.

8. A high-voltage power distribution system for new energy vehicles as described in claim 1, characterized in that: The high-voltage distribution box uses a cast aluminum alloy enclosure and top cover.

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