CN-122026583-A - High voltage controller integrated with low voltage sub-region

Abstract

An integrated power management system for an electric vehicle utilizes a centralized power management compartment architecture. An integrated power management system for an electric vehicle includes a split high voltage battery pack and a redundant integrated power module. Each integrated power module may combine DCDC power conversion with vehicle load control circuitry on a common circuit board.

Inventors

• S. K. Sugatapara
• M. M. Mahmud
• C. Sharma
• K. Lobo
• V. Rajagopalan

Assignees

• 瑞维安知识产权控股有限责任公司

Dates

Publication Date

20260512

Application Date

20250924

Priority Date

20250707

Claims (20)

1. 1. A power distribution system for a vehicle, the power distribution system comprising: a high voltage battery pack including a first battery section and a second battery section; A first integrated power module coupled with the first battery segment, the first integrated power module comprising: A first direct current-direct current (DCDC) converter configured to convert high voltage power to low voltage power, and A first set of vehicle load control circuits integrated with the first DCDC converter on a first common circuit board; A second integrated power module coupled with the second battery segment, the second integrated power module comprising: A second DCDC converter configured to convert the high voltage power into the low voltage power, and A second set of vehicle load control circuits integrated with the second DCDC converter on a second common circuit board, and An isolation switch configured to electrically isolate the first battery section from the second battery section.
2. 2. The power distribution system of claim 1, wherein the first set of vehicle load control circuits includes body control circuits configured to control a first body component, and the second set of vehicle load control circuits includes body control circuits configured to control a second body component.
3. 3. The power distribution system of claim 1, wherein upon detection of a fault in the first battery segment, the isolation switch disconnects the first battery segment while maintaining power to critical vehicle systems through the second integrated power module.
4. 4. The power distribution system of claim 1, wherein the first integrated power module further comprises a first battery management system integrated on the first common circuit board for monitoring the first battery segment.
5. 5. The power distribution system of claim 4, wherein the second integrated power module further comprises a second battery management system integrated on the second common circuit board for monitoring the second battery segment.
6. 6. The power distribution system of claim 1, wherein the first integrated power module and the second integrated power module are located on the first common circuit board.
7. 7. The power distribution system of claim 1, further comprising a low voltage DCDC converter coupled with at least one of the first battery segment or the second battery segment for providing power during a vehicle sleep state.
8. 8. An integrated vehicle power module, the integrated vehicle power module comprising: A circuit board; a DCDC converter mounted on the circuit board and configured to convert high voltage power from a battery section into low voltage power; a vehicle load control circuit mounted on the circuit board and configured to control a plurality of vehicle subsystems; a battery management system mounted on the circuit board and configured to monitor the battery segments; A microcontroller mounted on the circuit board and configured to control the DCDC converter and the vehicle load control circuit, and An electronic fuse integrated on the circuit board and configured to provide over-current protection.
9. 9. The integrated vehicle power module of claim 8 wherein the battery section comprises approximately one-half of a vehicle high voltage battery pack.
10. 10. The integrated vehicle power module of claim 8 wherein the vehicle load control circuit comprises hazard lamp control circuitry that maintains operation during a fault condition.
11. 11. The integrated vehicle power module of claim 8 wherein the vehicle load control circuit comprises a steering circuit, a brake control circuit, or a circuit for controlling external power input during a skip start condition.
12. 12. The integrated vehicle power module of claim 8 wherein the battery management system monitors cell voltage and temperature of the battery segment.
13. 13. The integrated vehicle power module of claim 8 further comprising a power input circuit configured to receive a cross-over start power.
14. 14. The integrated vehicle power module of claim 8 further comprising an isolation protection circuit configured to prevent high voltages from reaching a low voltage portion of the circuit board.
15. 15. A method of distributing power in a vehicle, the method comprising: receiving high voltage power from a high voltage power supply at the first integrated power module and the second integrated power module; converting the high voltage power to low voltage power using a DCDC converter in each of the first and second integrated power modules; Controlling a plurality of vehicle loads using a control circuit integrated on a common circuit board with the DCDC converter in each of the first and second integrated power modules, and Redundant power distribution is provided by the first integrated power module and the second integrated power module.
16. 16. The method of claim 15, further comprising managing a battery system using a battery management circuit integrated on the common circuit board.
17. 17. The method of claim 15, further comprising providing over-current protection using an electronic fuse integrated on the common circuit board.
18. 18. The method of claim 15, further comprising controlling a body component using a body control circuit integrated on the common circuit board.
19. 19. The method of claim 15, further comprising controlling a vehicle thermal component using a thermal control circuit integrated on the common circuit board.
20. 20. The method of claim 15, further comprising providing isolation between a high voltage portion and a low voltage portion of the common circuit board.

Description

High voltage controller integrated with low voltage sub-region Cross Reference to Related Applications The present application claims the benefit of U.S. provisional application No. 63/713,521, entitled "HIGH VOLTAGE CONTROLLERS INTEGRATED WITH LOW VOLTAGE ZONAL DOMAIN (high voltage controller integrated with low voltage sub-area)" filed on 10/29 of 2024, which is incorporated herein by reference in its entirety. Background The present disclosure relates to power distribution systems in electric vehicles, and in particular to integrated power modules. Disclosure of Invention The disclosed subject matter provides a partition architecture for power distribution and other designs thereof that may allow for the implementation of integrated power modules that combine direct current-to-direct current power conversion with vehicle load control circuitry. Drawings Certain features of the subject technology are set forth in the following claims. However, for purposes of explanation, several embodiments of the subject technology are set forth in the following figures. FIG. 1A illustrates an example top view of a vehicle having partitioned power distribution as described herein. FIG. 1B illustrates an example side view of a vehicle having partitioned power distribution as described herein. Fig. 1C illustrates an example perspective cross-sectional view of a vehicle with partitioned power distribution as described herein. FIG. 2A illustrates an example perspective view associated with the disclosed subject matter. FIG. 2B illustrates an example block diagram associated with the disclosed subject matter. FIG. 3 illustrates an example block diagram associated with the disclosed subject matter. FIG. 4 illustrates an example method associated with the disclosed subject matter. Detailed Description The detailed description set forth below is intended as a description of various configurations of the subject technology and is not intended to represent the only configurations in which the subject technology may be practiced. The accompanying drawings are incorporated in and constitute a part of this detailed description. The detailed description includes specific details for the purpose of providing a thorough understanding of the subject technology. However, it will be apparent to and clear to one skilled in the art that the subject technology is not limited to the specific details set forth herein and that the subject technology may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the subject technology. Conventional electric vehicle power systems typically use distributed components, resulting in increased complexity, increased wiring, and reduced reliability. More integrated and centralized architecture is needed to improve efficiency, reduce cost, enhance security, or provide functional redundancy. Systems often have difficulty achieving optimal power distribution, safety during charging, or efficient packaging of components. In addition, the architecture may require a 12V or similar Low Voltage (LV) battery for backup power and system start-up, which may further increase weight and complexity. The disclosed subject matter provides for combining high voltage direct current-direct current (DCDC) power conversion with vehicle load control circuitry on a common circuit board. The system may include redundant integrated power modules, each coupled with a separate section of the split high voltage battery. Each integrated power module may include a DCDC converter and various vehicle control circuits that may be located on a single circuit board, thereby reducing system complexity while providing fault tolerance through redundancy. The integration of power conversion and load control functions may minimize the number of wiring harnesses and individual control modules while enabling the removal of conventional 12V batteries. The system can maintain critical functionality during fault conditions through its redundant architecture and isolation capabilities. Fig. 1A illustrates an example top view of a vehicle 300. As further described herein, the vehicle 300 may include Electronic Control Units (ECUs) (e.g., ECU 10 and ECU 20) in the front portion 330 of the vehicle 300, ECU systems (e.g., ECU 51) in the rear portion 340 of the vehicle 300, which may be power management compartments, etc. In an example, ECU 10 may operate components on a first side of the longitudinal axis of vehicle 300, while ECU 20 may operate components on a second side of the longitudinal axis. The longitudinal axis may be defined as an imaginary line extending from the front to the rear of the vehicle 300 along the center of the vehicle, the imaginary line dividing the vehicle 300 into a first (e.g., left) side and a second (e.g., right) side. It is contemplated that a single ECU may be used to operate the functionality of the ent