48V redundant power supply system of vehicle and automobile

Abstract

The invention belongs to the technical field of electric appliance frameworks of vehicles, and particularly relates to a 48V redundant power supply system of a vehicle and the vehicle. The 48V redundant power supply system comprises a high-voltage module and a low-voltage module, the high-voltage module is respectively connected with a first high-low voltage conversion module and a second high-low voltage conversion module, the first high-low voltage conversion module is connected with a first power distribution module, and the second high-low voltage conversion module is connected with a second power distribution module; the first power distribution module and the second power distribution module are connected with the first 48V load and area controller assembly; the area controller assembly is connected with a second 48V load; an isolation module is arranged between the first power distribution module and the second power distribution module. The introduction of the 48V system not only improves the performance and efficiency of the automobile, but also helps to solve these challenges. And the function safety requirement of high-order intelligent driving is met through 48V redundant power distribution, and normal power supply of a load under single-point failure is ensured.

Description

Technical Field

[0001] This invention belongs to the field of vehicle electrical architecture technology, specifically relating to a 48V redundant power supply system for a vehicle and an automobile. Background Technology

[0002] The evolution of EE (Electronic and Electrical) architecture is gradually transitioning from distributed to domain-centralized, and then to centralized computing. With the increasing intelligence and electrification of automobiles, the number of in-vehicle electronic devices is surging, including key components with high power consumption characteristics such as drive-by-wire chassis, active suspension, multi-zone air conditioning, and advanced intelligent driving systems.

[0003] Traditional 12V electronic and electrical architecture faces physical limitations in power output, with a maximum power carrying capacity of only 5kW, which is insufficient to meet the actual power requirements of current vehicle electrical loads. At the same time, this architecture also suffers from issues such as redundant vehicle weight and excessive energy loss in the low-voltage system. These pain points urgently need to be addressed systematically through technological upgrades.

[0004] Based on this, the 48V domain control architecture has emerged. Its core value lies in significantly improving the extreme load capacity of the low-voltage system, thereby effectively adapting to and meeting the core needs of vehicle intelligence and electrification development.

[0005] Early vehicles using a 12V electronic electrical architecture did not employ a 48V electronic electrical architecture. To address this issue, existing technology proposes adding a 48V low-voltage electronic electrical system to the 12V electronic electrical architecture. Some mild hybrid vehicles also add or replace the existing 12V battery with a 48V electronic electrical hybrid system. However, the above approaches have varying degrees of technical drawbacks:

[0006] 1) The low-voltage load capacity is beyond its limit and cannot meet the new requirements.

[0007] 2) Simply adding a 48V low-voltage system without redundant power distribution cannot support the requirements of high-level intelligent driving.

[0008] 3) The 48V technology of mild hybrid mainly saves parameters and reduces emissions, while improving user experience, but it cannot improve the problem of low-voltage extreme load. Summary of the Invention

[0009] The purpose of this invention is to provide a 48V redundant power supply system for vehicles and automobiles. The 48V redundant power supply system can improve the low-voltage extreme load to meet the power requirements of intelligent driving, drive-by-wire chassis, etc. On this basis, the redundant power distribution architecture can meet the redundant power distribution requirements of high-level intelligent driving.

[0010] To achieve the above objectives, this application employs the following technical solution:

[0011] A 48V redundant power supply system for a vehicle includes a high-voltage module and a low-voltage module.

[0012] The high-voltage module is connected to the first high-low voltage conversion module and the second high-low voltage conversion module respectively. The first high-low voltage conversion module is connected to the first power distribution module, and the second high-low voltage conversion module is connected to the second power distribution module.

[0013] Both the first power distribution module and the second power distribution module are connected to the first 48V load and the area controller assembly.

[0014] The area controller assembly is connected to the second 48V load; an isolation module is provided between the first power distribution module and the second power distribution module.

[0015] Furthermore, both the first 48V load and the second 48V load are collections of more than one 48V load.

[0016] Furthermore, the area controller is always a set of two or more area controllers.

[0017] Furthermore, the first 48V power supply is connected to the first power distribution module, and the second 48V power supply is connected to the second power distribution module.

[0018] A 48V redundant power supply system for a vehicle includes a high-voltage module and a low-voltage module;

[0019] The high-voltage module is connected to the first high-low voltage conversion module and the second high-low voltage conversion module respectively; the first high-low voltage conversion module is connected to the first 48V power supply and the first power distribution module, and the second high-low voltage conversion module is connected to the second 48V power supply and the second power distribution module.

[0020] The first 48V power supply, the second 48V power supply, the first power distribution module, and the second power distribution module are all connected to the area controller assembly. The area controller assembly is connected to the first 48V load, the second 48V load, and the 12V load, respectively.

[0021] Furthermore, the area controller assembly integrates a first 48 / 12V DC-DC converter, a low-power 48 / 12V DC-DC converter, and an isolation module. The first 48V power supply, the second 48V power supply, the first power distribution module, and the second power distribution module are all connected to the first 48V load and the second 48V load through the isolation module.

[0022] Both the first 48 / 12V DC-DC converter and the low-power 48 / 12V DC-DC converter are connected to a 12V load.

[0023] Furthermore, the first 48V power supply and the first power distribution module are connected to the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC through an isolation module; the second 48V power supply and the second power distribution module are connected to the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC.

[0024] An automobile that utilizes the 48V redundant power supply system of any of the above-mentioned vehicles.

[0025] The beneficial effects of this invention are:

[0026] The introduction of the 48V system in this invention not only improves the performance and efficiency of automobiles but also helps address these challenges. Furthermore, the 48V redundant power distribution meets the functional safety requirements of advanced intelligent driving and ensures normal power supply to loads in the event of a single point of failure. Attached Figure Description

[0027] Figure 1 This is a framework diagram of Embodiment 1 of the 48V redundant power supply system for the vehicle of the present invention.

[0028] Figure 2 This is a framework diagram of Embodiment 2 of the 48V redundant power supply system for the vehicle of the present invention. Detailed Implementation

[0029] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and should not be construed as limiting the technical solution of the present invention.

[0030] This technical solution enhances the low-voltage limit load through low-voltage 48V to support power distribution for high-power loads such as advanced intelligent driving; it meets the functional safety requirements of advanced intelligent driving through redundant power distribution, and maintains power distribution functionality under single-point failure conditions.

[0031] Example 1

[0032] This application provides a 48V redundant power supply system for a vehicle, including a high-voltage module and a low-voltage module, wherein the low-voltage module includes a low-voltage power supply, a power distribution module, an isolation module, a zone controller module, a 48V power supply, and a 12V power supply.

[0033] The high-voltage module is connected to the first high-low voltage conversion module and the second high-low voltage conversion module respectively. The first high-low voltage conversion module is connected to the first power distribution module, and the second high-low voltage conversion module is connected to the second power distribution module. Both the first power distribution module and the second power distribution module are connected to the first 48V load and the area controller assembly.

[0034] The area controller assembly is connected to the second 48V load; an isolation module is provided between the first power distribution module and the second power distribution module.

[0035] In this application, the first 48V load and the second 48V load are both collections of more than one 48V load.

[0036] In this application, a regional controller is always a set of two or more regional controllers.

[0037] In this application, the first 48V power supply is connected to the first power distribution module, and the second 48V power supply is connected to the second power distribution module.

[0038] Specifically: The high voltage module converts high voltage (800V, 400V, etc.) to low voltage (48V) through two high-low voltage conversion modules.

[0039] The two high-low voltage conversion modules are respectively connected to two low-voltage power supplies and the power distribution module, playing the role of high-voltage to low-voltage conversion and serving as the main energy source for the low-voltage load of the whole vehicle.

[0040] The low-voltage power supply is a 48V battery, which provides power when the vehicle's power switch is OFF (power off) and also plays a role in power balancing.

[0041] Two power distribution modules directly supply power to some of the 48V loads and area controllers. The 48V loads and area controllers are redundantly powered by two low-voltage power supplies and power distribution modules.

[0042] The isolation module is normally closed. When a power supply or distribution module fault is detected (undervoltage, overcurrent, power failure, overvoltage, etc.), the isolation module switch opens to ensure that all loads are powered normally.

[0043] The entire system includes, but is not limited to, two or more area controllers. The area controllers integrate a 48V to 12V voltage conversion module, which has control and power distribution capabilities and can supply power to both 12V and 48V loads simultaneously.

[0044] 48V loads are divided into two categories: one is directly powered by the low-voltage power supply and the power distribution module, and the other is powered by the area controller; all 12V loads are powered by the area controller.

[0045] Example 2

[0046] like Figure 2 As shown, this application provides a 48V redundant power supply system for a vehicle, including a high-voltage module and a low-voltage module.

[0047] In this application, the high voltage module is connected to the first high-low voltage conversion module and the second high-low voltage conversion module respectively; the first high-low voltage conversion module is connected to the first 48V power supply and the first power distribution module, and the second high-low voltage conversion module is connected to the second 48V power supply and the second power distribution module.

[0048] The first 48V power supply, the second 48V power supply, the first power distribution module, and the second power distribution module are all connected to the area controller assembly. The area controller assembly is connected to the first 48V load, the second 48V load, and the 12V load, respectively.

[0049] In this application, the area controller assembly integrates a first 48 / 12V DC-DC converter, a low-power 48 / 12V DC-DC converter, and an isolation module. The first 48V power supply, the second 48V power supply, the first power distribution module, and the second power distribution module are all connected to the first 48V load and the second 48V load through the isolation module.

[0050] In this application, both the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC are connected to a 12V load.

[0051] In this application, the first 48V power supply and the first power distribution module are connected to the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC through an isolation module; the second 48V power supply and the second power distribution module are connected to the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC.

[0052] Specifically: Two low-voltage power supplies and the power distribution module simultaneously power the area controller, providing a 48V input. The area controller ensures redundant power distribution for 48V load 2 through an isolation module. After the area controller is powered on, the main power supply (low-voltage power supply 2) switch will naturally turn on without additional control signals. The main power supply (low-voltage power supply 2) prioritizes powering the area controller. The isolation switch on the backup / redundant power supply (low-voltage power supply 1) side is normally in the open state. Only when the PMU / MCU detects a main power supply fault (undervoltage, overcurrent, power failure, overvoltage, etc.) will it output a control signal to close the switch, and the backup power supply will switch off under normal circumstances.

[0053] The area controller integrates two 48V to 12V DC-DC converters, functioning as a 48V to 12V converter. When the vehicle is awake, the 48V / 12V converter operates normally, powering the 12V load through the drive. When the vehicle is in sleep mode, it is in a low-power state, and the 12V load is powered through the low-power 48V / 12V converter. This low-power 48V / 12V converter has extremely low energy consumption, enabling it to power the 12V load even under low power conditions. When the 12V load power exceeds a certain value (30W), the 48V / 12V converter operates, and the vehicle exits low power mode. This ensures normal power supply to the 12V load in low-power mode, eliminating the need for a 12V battery and reducing weight and cost.

[0054] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 48V redundant power supply system for a vehicle, characterized in that, Includes high-voltage modules and low-voltage modules. The high-voltage module is connected to the first high-low voltage conversion module and the second high-low voltage conversion module respectively. The first high-low voltage conversion module is connected to the first power distribution module, and the second high-low voltage conversion module is connected to the second power distribution module. Both the first power distribution module and the second power distribution module are connected to the first 48V load and the area controller assembly. The area controller assembly is connected to the second 48V load; an isolation module is provided between the first power distribution module and the second power distribution module.

2. The 48V redundant power supply system for a vehicle according to claim 1, characterized in that, The first 48V load and the second 48V load are both collections of more than one 48V load.

3. The 48V redundant power supply system for a vehicle according to claim 1, characterized in that, The area controller is a set of two or more area controllers.

4. The 48V redundant power supply system for a vehicle according to claim 1, characterized in that, The first 48V power supply is connected to the first power distribution module, and the second 48V power supply is connected to the second power distribution module.

5. A 48V redundant power supply system for a vehicle, characterized in that, Includes high-voltage modules and low-voltage modules; The high-voltage module is connected to the first high-low voltage conversion module and the second high-low voltage conversion module respectively; the first high-low voltage conversion module is connected to the first 48V power supply and the first power distribution module, and the second high-low voltage conversion module is connected to the second 48V power supply and the second power distribution module. The first 48V power supply, the second 48V power supply, the first power distribution module, and the second power distribution module are all connected to the area controller assembly. The area controller assembly is connected to the first 48V load, the second 48V load, and the 12V load, respectively.

6. The 48V redundant power supply system for a vehicle according to claim 5, characterized in that, The area controller assembly integrates a first 48 / 12V DC-DC converter, a low-power 48 / 12V DC-DC converter, and an isolation module. The first 48V power supply, the second 48V power supply, the first power distribution module, and the second power distribution module are all connected to the first 48V load and the second 48V load through the isolation module. Both the first 48 / 12V DC-DC converter and the low-power 48 / 12V DC-DC converter are connected to a 12V load.

7. The 48V redundant power supply system for a vehicle according to claim 5, characterized in that, The first 48V power supply and the first power distribution module are connected to the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC through an isolation module; the second 48V power supply and the second power distribution module are connected to the first 48 / 12V DC-DC and the low-power 48 / 12V DC-DC.

8. A car, characterized in that, The vehicle utilizes a 48V redundant power supply system as described in any one of claims 1 to 7.

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