48V whole vehicle power supply redundant system and vehicle

Abstract

The invention provides a 48V whole vehicle power redundant system and a vehicle, and relates to the technical field of vehicles, the 48V whole vehicle power redundant system comprises a power supply assembly used for providing 48V voltage, and the output end of the power supply assembly is connected with the input ends of a plurality of first loads; the redundant power supply assembly and the power supply assembly are arranged in parallel, and the output end of the redundant power supply assembly is connected with the input end of the first load; the input end of the redundant power distribution assembly is connected with the output end of the redundant power supply assembly, the output end of the redundant power distribution assembly is connected with a plurality of second loads, and the redundant power distribution assembly is used for distributing power to the second loads; when one of the power supply assembly and the redundant power supply assembly is abnormal, the other one normally distributes power to the first load, and the problem that in the prior art, a vehicle lacks 48V power supply redundancy is solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a 48V vehicle power redundancy system and a vehicle. Background Art

[0002] Most existing vehicles use traditional 12V electrical systems. Due to the limitations of traditional 12V electrical systems, they cannot meet the growing demand for electronic equipment in vehicles. 48V electrical systems have excellent performance and potential. Currently, there are relatively few passenger car models that use 48V power systems on a large scale. Only the Cybertruck model uses it. There is relatively little research on related power systems, and a 48V power system solution that meets redundancy requirements has not yet been developed.

[0003] Based on the problems existing in the prior art, there is currently no better solution. Summary of the invention

[0004] The main purpose of the present invention is to provide a 48V vehicle power redundancy system and a vehicle to solve the problem of lack of 48V power redundancy in vehicles in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a 48V vehicle power redundancy system is provided. The 48V vehicle power redundancy system includes: a power supply component, the power supply component is used to provide a 48V voltage, and the output end of the power supply component is connected to the input end of multiple first loads; a redundant power supply component, the redundant power supply component is arranged in parallel with the power supply component, and the output end of the redundant power supply component is connected to the input end of the first load; a redundant power distribution component, the input end of the redundant power distribution component is connected to the output end of the redundant power supply component, and the output end of the redundant power distribution component is connected to multiple second loads, and the redundant power distribution component is used to distribute power to the second loads; wherein, when one of the power supply component and the redundant power supply component fails, the other one normally distributes power to the first load.

[0006] Furthermore, the output end of the power supply component is connected to the input end of multiple first loads through a first line, the output end of at least part of the redundant power supply component is connected to the input end of multiple first loads through the first line, and the output end of another part of the redundant power supply component is connected to the input end of multiple first loads through a second line.

[0007] Furthermore, the redundant power supply component includes: a main 48V battery, the output end of the main 48V battery is connected to the input end of the first load through a first line, and the main 48V battery is arranged in parallel with the power supply component; a backup 48V battery, the backup 48V battery is connectable to the main 48V battery, and the output end of the backup 48V battery is connected to the input end of the first load through a second line.

[0008] Furthermore, the redundant power supply component also includes: an isolator, which is arranged between the main 48V battery and the backup 48V battery, and the isolator has an energized state that connects the main 48V battery and the backup 48V battery circuit, and the isolator has a disconnected state that disconnects the main 48V battery and the backup 48V battery circuit; wherein, when the isolator is in the energized state, the main 48V battery and the backup 48V battery are connected in parallel, and the main 48V battery and the backup 48V battery jointly supply power to the first load, and when the isolator is in the disconnected state, the main 48V battery and the backup 48V battery respectively supply power to the first load.

[0009] Further, the redundant power distribution component includes: a domain controller, the domain controller having at least two domain controller input terminals, one of which is connected to the output terminal of the main 48V battery through a third line, and the other domain controller input terminal is connected to the output terminal of the backup 48V battery through a fourth line, the third line is connected to the first line, and the fourth line is connected to the second line.

[0010] Furthermore, a main power supply and a backup power supply are provided in the domain controller, the main power supply and the backup power supply are provided in a physically isolated manner, and the main power supply and the backup power supply are provided in a communicative connection manner, and the main power supply and the backup power supply are used to supply power to the second load.

[0011] Furthermore, the second load includes a 48V load and a 12V load, the output end of the main power supply can be connected to the input end of the 48V load and the input end of the 12V load at the same time, and the output end of the backup power supply can be connected to the input end of the 48V load and the input end of the 12V load at the same time.

[0012] Furthermore, a first DCDC converter is provided in both the main power supply and the backup power supply. The first DCDC converter is used to convert the 48V voltage into a 12V voltage. The output end of the first DCDC converter is connected to the input end of the 12V load in the second load.

[0013] Furthermore, the power supply component includes: a high-voltage battery, which is used to provide high voltage electricity; a second DCDC converter, the input end of the second DCDC converter is connected to the output end of the high-voltage battery, and the first DCDC converter is used to convert the high voltage electricity into 48V electricity.

[0014] According to another aspect of the present invention, a vehicle is provided, comprising a 48V vehicle power redundancy system, wherein the 48V vehicle power redundancy system is the 48V vehicle power redundancy system of the above embodiment.

[0015] By applying the technical solution of the present invention, a redundant power supply component is set up, and even if the main power supply component fails, the redundant power supply component can still continue to provide power to the first load, thereby ensuring the stable operation of the system. The redundant power distribution component enables the system to distribute power to the second load as needed during normal operation, thereby increasing the flexibility and scalability of the system, thereby improving the reliability, safety and convenience of maintenance of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a 48V vehicle power redundancy system according to the present invention is shown.

[0018] The above drawings include the following reference numerals:

[0019] 10. Power supply components;

[0020] 11. High voltage battery;

[0021] 12. Second DCDC converter;

[0022] 20. First load;

[0023] 30. Redundant power supply components;

[0024] 31. Main 48V battery;

[0025] 32. Backup 48V battery;

[0026] 33. Isolator;

[0027] 40. Redundant power distribution components;

[0028] 41. Domain controller;

[0029] 411. a first DCDC converter;

[0030] 50. Second load;

[0031] 51, 48V load;

[0032] 52, 12V load;

[0033] 101, first line;

[0034] 102, second line;

[0035] 103, the third line;

[0036] 104. The fourth line. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0041] It should be noted that the 48V electrical system has the following advantages over the 12V electrical system:

[0042] 1. Higher voltage: The 48V electrical system has a higher voltage than the 12V electrical system and can provide greater power output.

[0043] 2. Higher energy efficiency: The 48V electrical system can provide higher energy efficiency and reduce energy waste.

[0044] 3. Lower current: Due to the higher voltage, the 48V electrical system can use lower current when transmitting the same power, reducing line losses and heat.

[0045] 4. Better power performance: The 48V electrical system can provide higher power output, making the vehicle accelerate faster and drive smoother.

[0046] 5. More suitable for hybrid systems: The 48V electrical system is more suitable for combination with hybrid systems, which can improve fuel efficiency and reduce emissions.

[0047] 6. More suitable for electrification: With the popularity of electric vehicles, 48V electrical systems are also more suitable for use in electric vehicles to achieve higher performance and mileage.

[0048] Combination Figure 1 As shown, according to a specific embodiment of the present invention, a 48V vehicle power redundancy system is provided.

[0049] Specifically, Figure 1 As shown, the 48V vehicle power redundancy system includes: a power supply component 10, the power supply component 10 is used to provide a 48V voltage, and the output end of the power supply component 10 is connected to the input end of multiple first loads 20; a redundant power supply component 30, the redundant power supply component 30 is arranged in parallel with the power supply component 10, and the output end of the redundant power supply component 30 is connected to the input end of the first load 20; a redundant power distribution component 40, the input end of the redundant power distribution component 40 is connected to the output end of the redundant power supply component 30, and the output end of the redundant power distribution component 40 is connected to multiple second loads 50, and the redundant power distribution component 40 is used to distribute power to the second loads 50; wherein, when one of the power supply component 10 and the redundant power supply component 30 malfunctions, the other one distributes power to the first load 20 normally.

[0050] In this embodiment, by setting up a redundant power supply component 30, even if the main power supply component 10 fails, the redundant power supply component 30 can still continue to provide power to the first load 20, thereby ensuring the stable operation of the system. The redundant power distribution component 40 enables the system to distribute power to the second load 50 as needed during normal operation, thereby increasing the flexibility and scalability of the system, thereby improving the reliability, safety and ease of maintenance of the entire system.

[0051] The first load 20 is mainly a 48V load, including 48V EPS, IBC, fans and other SR high current loads, brakes and steering gears, etc. The second load 50 includes 48V loads and 12V loads, so the redundant power distribution component 40 distributes power according to different types of the second loads 50.

[0052] Furthermore, the output end of the power supply component 10 is connected to the input end of the plurality of first loads 20 through the first line 101, the output end of at least part of the redundant power supply components 30 is connected to the input end of the plurality of first loads 20 through the first line 101, and the output end of another part of the redundant power supply components 30 is connected to the input end of the plurality of first loads 20 through the second line 102. In other words, the redundant power supply components 30 are also mutually redundant, so that when part of the redundant power supply components 30 fail to supply power through the first line 101, another part of the redundant power supply components 30 can still supply power to the first loads 20 through the second line 102, thereby further improving the reliability and safety of the entire system.

[0053] Specifically, the redundant power supply component 30 includes: a main 48V battery 31, the output end of the main 48V battery 31 is connected to the input end of the first load 20 through a first line 101, and the main 48V battery 31 is arranged in parallel with the power supply component 10; a backup 48V battery 32, the backup 48V battery 32 is connectable to the main 48V battery 31, and the output end of the backup 48V battery 32 is connected to the input end of the first load 20 through a second line 102.

[0054] By setting the main 48V battery 31 and the backup 48V battery 32 in parallel, even if the main battery fails, the backup battery can immediately take over the power supply task to ensure that the first load 20 will not be interrupted due to power problems. Through a switchable connection method (such as a relay or an electronic switch) between the main 48V battery 31 and the backup 48V battery 32, seamless switching can be achieved when the main battery fails, reducing or eliminating system interruptions caused by power switching.

[0055] In some optional embodiments, the system may also be designed with multi-level redundant power supplies. For example, in addition to the main battery and the backup battery, one or more intermediate levels of redundant power supplies may also be provided.

[0056] In some optional embodiments, an energy recovery system may be designed, such as utilizing the electrical energy generated during the discharge of the battery, or feeding energy back to the grid when the system is shut down.

[0057] In some optional embodiments, the system may integrate an intelligent monitoring system to monitor the status of the main battery and the backup battery in real time, including voltage, current, temperature, etc., and automatically switch the power source when an abnormality is detected.

[0058] Furthermore, the redundant power supply component 30 also includes: an isolator 33, the isolator 33 is arranged between the main 48V battery 31 and the backup 48V battery 32, the isolator 33 has an energized state that connects the main 48V battery 31 and the backup 48V battery 32 lines, and the isolator 33 has a disconnected state that disconnects the main 48V battery 31 and the backup 48V battery 32 lines; wherein, when the isolator 33 is in the energized state, the main 48V battery 31 and the backup 48V battery 32 are connected in parallel, and the main 48V battery 31 and the backup 48V battery 32 jointly supply power to the first load 20, and when the isolator 33 is in the disconnected state, the main 48V battery 31 and the backup 48V battery 32 respectively supply power to the first load 20. The isolator 33 is energized and works after the whole vehicle wakes up, and is disconnected after the whole vehicle sleeps, so as to avoid mutual charging between the two 48V batteries and affect the battery life.

[0059] In some optional embodiments, the state switching of the isolator 33 is managed by an intelligent control unit, which may be integrated into the regional controller or designed separately. It automatically or manually adjusts the state of the isolator 33 according to the actual operation of the system, such as the battery status (health, power), vehicle status (wake up, sleep), load demand, etc. For example, when the vehicle wakes up and is ready to run, the control unit puts the isolator 33 in the pull-in state to fully utilize the total output power of the two batteries. When the vehicle enters sleep mode or a battery failure is detected, the isolator 33 is placed in the disconnected state to protect the normally operating battery from the influence of the faulty battery.

[0060] In terms of design, the triggering conditions of the isolator 33 may include but are not limited to:

[0061] Battery health is lower than a preset threshold: When the health of a battery is lower than a preset threshold of the system, the isolator 33 will automatically switch to a disconnected state to prevent further damage.

[0062] Low battery power: When it is detected that the power of a battery is too low to meet the load demand, the isolator 33 will switch to the disconnected state and only the other battery will supply power until the power is restored or replenished by charging.

[0063] Vehicle wake-up or sleep state: When the vehicle wakes up, the isolator 33 is in the energized state to increase the output capacity; after entering the sleep state, the isolator 33 is disconnected to prevent the batteries from charging each other in the sleep mode.

[0064] Furthermore, the redundant power distribution component 40 includes: a domain controller 41, the domain controller 41 has at least two domain controller input terminals, one of which is connected to the output terminal of the main 48V battery 31 through the third line 103, and the other is connected to the output terminal of the backup 48V battery 32 through the fourth line 104, the third line 103 is connected to the first line 101, and the fourth line 104 is connected to the second line 102.

[0065] The domain controller 41 is designed with at least two input terminals, each of which is connected to the main 48V battery 31 and the backup 48V battery 32. This design ensures that the system can immediately switch to another battery for power supply when any battery fails, reducing the delay in power switching and improving the response speed and reliability of the overall system.

[0066] By setting the third line 103 to be connected to the output end of the main 48V battery 31 and the fourth line 104 to be connected to the output end of the backup 48V battery 32, when the main 48V battery fails to supply power to the domain controller 41, the backup 48V battery 32 can also take over the power supply work, thereby ensuring that at least one side has power, thereby further improving the reliability and safety of the entire system.

[0067] Furthermore, a main power supply and a backup power supply are provided in the domain controller 41, and the main power supply and the backup power supply are provided in a physically isolated manner, and the main power supply and the backup power supply are provided in a communication connection manner, and the main power supply and the backup power supply are used to supply power to the second load 50. By providing the main power supply and the backup power supply in a physically isolated manner, even if one of the power supplies fails, the other power supply can still continue to supply power to the system, thereby avoiding a single point failure. Physical isolation can prevent the propagation of faults. For example, if the main power supply fails for some reason, it will not affect the backup power supply, thereby ensuring the overall safety of the system. The communication connection manner of the main power supply and the backup power supply means that the communication lines (such as CAN bus, LIN bus or Ethernet) inside the domain controller 41 are not isolated, allowing the communication between the main power supply and the backup power supply to remain unaffected. This arrangement allows the control unit to exchange information and coordinate operations through the internal communication lines even if there is isolation between the power supplies.

[0068] Furthermore, the second load 50 includes a 48V load 51 and a 12V load 52, the output end of the main power supply can be connected to the input end of the 48V load 51 and the input end of the 12V load 52 at the same time, and the output end of the backup power supply can be connected to the input end of the 48V load 51 and the input end of the 12V load 52 at the same time. This arrangement enables the system to meet the power requirements of different loads.

[0069] Furthermore, a first DCDC converter 411 is provided in both the main power supply and the backup power supply. The first DCDC converter 411 is used to convert the 48V voltage into a 12V voltage. The output end of the first DCDC converter 411 is connected to the input end of the 12V load 52 in the second load 50.

[0070] Furthermore, the power supply component 10 includes: a high-voltage battery 11, which is used to provide high voltage electricity; a second DCDC converter 12, the input end of the second DCDC converter 12 is connected to the output end of the high-voltage battery 11, and the second DCDC converter 12 is used to convert the high voltage electricity into 48V electricity.

[0071] According to another aspect of the present invention, a vehicle is provided, including a 48V vehicle power redundancy system, and the 48V vehicle power redundancy system is the 48V vehicle power redundancy system of the above embodiment. The 48V vehicle power redundancy system includes: a power supply component 10, the power supply component 10 is used to provide a 48V voltage, and the output end of the power supply component 10 is connected to the input end of multiple first loads 20; a redundant power supply component 30, the redundant power supply component 30 is arranged in parallel with the power supply component 10, and the output end of the redundant power supply component 30 is connected to the input end of the first load 20; a redundant power distribution component 40, the input end of the redundant power distribution component 40 is connected to the output end of the redundant power supply component 30, and the output end of the redundant power distribution component 40 is connected to multiple second loads 50, and the redundant power distribution component 40 is used to distribute power to the second load 50; wherein, when one of the power supply component 10 and the redundant power supply component 30 is abnormal, the other one normally distributes power to the first load 20.

[0072] By setting up a redundant power supply component 30, even if the main power supply component 10 fails, the redundant power supply component 30 can still continue to provide power to the first load 20, thereby ensuring the stable operation of the system. The redundant power distribution component 40 enables the system to distribute power to the second load 50 as needed during normal operation, thereby increasing the flexibility and scalability of the system, thereby improving the reliability, safety and ease of maintenance of the entire system.

[0073] This power redundancy solution is suitable for 400V and 800V high-voltage electric vehicles and hybrid models. It starts with the output of the high-voltage 400 / 800V to 48V DCDC, and then to the 48V lithium battery. The whole vehicle uses two 48V lithium batteries for mutual backup redundancy. The 48V battery adopts a self-wake-up and self-powered solution (built-in DCDC), and does not require an external 12V to power the 48V BMS, eliminating the traditional 12V battery.

[0074] The redundant power supply assembly 30 of the present invention supplies power to the first load 20 as a primary power distribution process. The primary power distribution uses a power distribution box / intelligent power distribution box to supply power to 48V QM loads. The isolation or power distribution box mainly supplies power to 48V EPS, IBC, fans and other SR high current loads. An isolator is added between the two 48V batteries. The isolator is energized after the vehicle wakes up and disconnected after the vehicle sleeps to prevent the two 48V batteries from charging each other and affecting the battery life.

[0075] The redundant power distribution component 40 of the present invention supplies power to the second load 50 as a secondary power distribution process. For the secondary power distribution, a domain controller is used for distribution. In view of the two voltage requirements of 12V and 48V for the whole vehicle, a power isolation solution within the domain controller is adopted. The main power supply and the backup power supply are isolated within the board, and the communication within the board is not isolated. The backup power supply circuit within the board is only responsible for the power supply of the 12 / 48V SR load. Two built-in 48V to 12V DCDC solutions realize 48V to 12V output, wherein DCDC1 is the main power supply and DCDC2 is the backup power supply, which is only used to power the 12V SR load.

[0076] In order to solve the problem that DCDC can still power components with memory and wake-up requirements after sleep, the 48 / 12V DCDC set in the domain controller is equipped with a main circuit and a bypass circuit. When the vehicle current is greater than the bypass current output capacity or the vehicle wakes up, the main circuit is started to meet the needs of secondary power grid connection and distribution. After the main power grid or the backup power grid fails, the isolation switch cuts off the connection between the two power grids, maintains grid isolation, and ensures that the SR load can work normally. Both the 48V battery and DCDC are designed in accordance with ASILB or ASILD, with the goal of making the entire power system meet the functional safety ASILD requirements. Through the above solution concept, on the one hand, it can solve the problem of mixed coexistence of 48V and 12V power supplies, and on the other hand, it can solve the problem of redundant power supply for L3 and above models.

[0077] Through the above technical solution, the present invention has the following technical effects:

[0078] (1) It can solve the problem of 48V power redundancy of the entire vehicle. The size of the redundant battery and the power of the built-in DCDC can be determined according to the power type and size of the vehicle's safety load.

[0079] (2) The implementation process and method of the 48V power system redundancy solution are described in detail to solve the problem of vehicles that require redundant power solutions. This solution can be used for autonomous driving L3 vehicles and above.

[0080] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0081] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 48V vehicle power redundancy system, characterized in that: include: A power supply component (10), the power supply component (10) being used to provide a 48V voltage, the output end of the power supply component (10) being connected to the input ends of a plurality of first loads (20); a redundant power supply component (30), the redundant power supply component (30) being arranged in parallel with the power supply component (10), the output end of the redundant power supply component (30) being connected to the input end of the first load (20); a redundant power distribution component (40), wherein an input end of the redundant power distribution component (40) is connected to an output end of the redundant power supply component (30), a plurality of second loads (50) are connected to the output end of the redundant power distribution component (40), and the redundant power distribution component (40) is used to distribute power to the second loads (50); Wherein, when one of the power supply component (10) and the redundant power supply component (30) fails, the other one normally distributes power to the first load (20).

2. The 48V vehicle power redundancy system according to claim 1 is characterized in that: The output end of the power supply component (10) is connected to the input ends of the plurality of first loads (20) via a first line (101), the output end of at least part of the redundant power supply component (30) is connected to the input ends of the plurality of first loads (20) via the first line (101), and the output end of another part of the redundant power supply component (30) is connected to the input ends of the plurality of first loads (20) via a second line (102).

3. The 48V vehicle power redundancy system according to claim 2 is characterized in that: The redundant power supply component (30) comprises: a main 48V battery (31), wherein an output end of the main 48V battery (31) is connected to an input end of the first load (20) via the first line (101), and the main 48V battery (31) and the power supply component (10) are arranged in parallel; A backup 48V battery (32), the backup 48V battery (32) being connectable and disconnectable to the main 48V battery (31), the output end of the backup 48V battery (32) being connected to the input end of the first load (20) via the second line (102).

4. The 48V vehicle power redundancy system according to claim 2 is characterized in that: The redundant power supply component (30) further comprises: an isolator (33), the isolator (33) being arranged between the main 48V battery (31) and the backup 48V battery (32), the isolator (33) having an engaged state for connecting the main 48V battery (31) and the backup 48V battery (32) lines, and the isolator (33) having an disconnected state for disconnecting the main 48V battery (31) and the backup 48V battery (32) lines; Wherein, when the isolator (33) is in the engaged state, the main 48V battery (31) and the backup 48V battery (32) are connected in parallel, and the main 48V battery (31) and the backup 48V battery (32) jointly supply power to the first load (20); when the isolator (33) is in the disconnected state, the main 48V battery (31) and the backup 48V battery (32) respectively supply power to the first load (20).

5. The 48V vehicle power redundancy system according to claim 3 is characterized in that: The redundant power distribution component (40) comprises: A domain controller (41), the domain controller (41) having at least two domain controller input terminals, one of the domain controller input terminals being connected to the output terminal of the main 48V battery (31) via a third line (103), the other of the domain controller input terminals being connected to the output terminal of the backup 48V battery (32) via a fourth line (104), the third line (103) being arranged to communicate with the first line (101), and the fourth line (104) being arranged to communicate with the second line (102).

6. The 48V vehicle power redundancy system according to claim 5, characterized in that: The domain controller (41) is provided with a main power supply and a backup power supply, the main power supply and the backup power supply are provided in a physically isolated manner, and the main power supply and the backup power supply are provided in a communicative connection, and the main power supply and the backup power supply are used to supply power to the second load (50).

7. The 48V vehicle power redundancy system according to claim 6, characterized in that: The second load (50) comprises a 48V load (51) and a 12V load (52); the output end of the main power supply can be connected to the input end of the 48V load (51) and the input end of the 12V load (52) at the same time; the output end of the backup power supply can be connected to the input end of the 48V load (51) and the input end of the 12V load (52) at the same time.

8. The 48V vehicle power redundancy system according to claim 7, characterized in that: A first DCDC converter (411) is provided in both the main power supply and the backup power supply. The first DCDC converter (411) is used to convert a 48V voltage into a 12V voltage. The output end of the first DCDC converter (411) is connected to the input end of the 12V load (52) in the second load (50).

9. The 48V vehicle power redundancy system according to claim 1, characterized in that: The power supply component (10) comprises: A high-voltage battery (11), wherein the high-voltage battery (11) is used to provide high-voltage electricity; A second DCDC converter (12), wherein an input end of the second DCDC converter (12) is connected to an output end of the high-voltage battery (11), and the second DCDC converter (12) is used to convert the high-voltage electricity into the 48V electricity.

10. A vehicle, characterized in that: It comprises a 48V vehicle power redundancy system, and the 48V vehicle power redundancy system is the 48V vehicle power redundancy system according to any one of claims 1-9.

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