Power distribution systems and methods

Abstract

This application discloses a power distribution system and method. The power distribution system includes a positive main fuse box, an interior electrical box, an engine compartment electrical box, a battery, a DC-DC power switch module, a first wiring harness, a second wiring harness, a third wiring harness, and a fourth wiring harness. The positive main fuse box is located at the positive terminal of the battery. The engine compartment electrical box is located inside the engine compartment. The interior electrical box is located between the engine compartment electrical box and the DC-DC power switch module. The interior electrical box is connected to the DC-DC power switch module via the first wiring harness, and to the positive main fuse box via the second wiring harness. The engine compartment electrical box is connected to the interior electrical box via the third wiring harness, and to the DC-DC power switch module via the fourth wiring harness. Powering the engine compartment electrical box through two methods improves the safety and reliability of the power distribution system.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and in particular to a power distribution system and method. Background Technology

[0002] With the increasing safety requirements for intelligent driving in vehicles and the growing electrical loads within them, power distribution needs to be prioritized based on the location of the load area. This reduces the total current load on individual electrical boxes, preventing excessive current from causing overheating and potential hazards. Furthermore, to meet the safety requirements for intelligent driving, safety-related controllers and actuators throughout the vehicle require independent power distribution, i.e., dual power supply.

[0003] In related technologies, two independent power supply systems are used for dual-path power supply. For example, multiple batteries are connected to corresponding electrical boxes, and the power supply to the vehicle load is distributed through the two power supply systems. However, these technologies are costly, involve significant installation of multiple batteries, and occupy considerable space. Therefore, a key challenge is to achieve circuit distribution that meets the safety requirements of intelligent driving and the demands of the vehicle's overall load while saving costs and space. Summary of the Invention

[0004] This application provides a power distribution system and method that can achieve dual power supply for a vehicle while saving costs and space. The technical solution is as follows:

[0005] On one hand, this application provides a power distribution system, characterized in that the power distribution system includes a positive main fuse box, an indoor electrical box, an engine compartment electrical box, a battery, a DC-DC (Direct Current to Direct Current) power switch module, a first wiring harness, a second wiring harness, a third wiring harness, and a fourth wiring harness;

[0006] The positive terminal fuse box is located on the positive terminal of the battery, the engine compartment electrical box is located inside the engine compartment, and the interior electrical box is located between the engine compartment electrical box and the DC-DC power switch module.

[0007] The indoor electrical box is connected to the DC-DC power switch module via the first wiring harness, the indoor electrical box is connected to the positive main fuse box via the second wiring harness, the engine compartment electrical box is connected to the indoor electrical box via the third wiring harness, and the engine compartment electrical box is connected to the DC-DC power switch module via the fourth wiring harness.

[0008] On the other hand, a power distribution method is provided, the method being executed by any of the power distribution systems described above, characterized in that the method includes:

[0009] Obtain a first detection result, which is used to indicate whether the vehicle is operating normally;

[0010] In response to the first detection result indicating that the vehicle is operating normally, the first power switching switch and the second power switching switch are closed.

[0011] When the first power switching switch is closed, the DC-DC power switching module supplies power to the indoor electrical box through the first wiring harness;

[0012] When the second power switching switch is closed, the DC-DC power switching module supplies power to the engine compartment electrical box through the fourth wiring harness.

[0013] On the other hand, a non-transitory computer-readable storage medium is also provided, wherein at least one computer program is stored in the computer-readable storage medium, the at least one computer program being loaded and executed by a processor to enable a computer to implement any of the power distribution methods described above.

[0014] On the other hand, a computer program product or computer program is also provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, causing the computer device to perform any of the power distribution methods described above.

[0015] This disclosure provides a power distribution system, which includes a positive main fuse box, an interior electrical box, an engine compartment electrical box, a battery, and a DC-DC power switch module. The interior electrical box is connected to the DC-DC power switch module via a first wiring harness, connected to the positive main fuse box via a second wiring harness, and connected to the engine compartment electrical box via a third wiring harness. The engine compartment electrical box is also directly connected to the DC-DC power switch module via a fourth wiring harness. Therefore, the DC-DC power switch module can supply power to the engine compartment electrical box in two ways: via the interior electrical box and directly to the engine compartment electrical box, achieving dual power supply with mutual backup, thus improving the safety and reliability of the power distribution system. Compared with the existing technology that typically uses two independent power supply systems, this system saves cost and space while meeting the requirements of dual power supply. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the architecture of a power distribution system provided in an embodiment of this application;

[0018] Figure 2 This is a circuit diagram of an indoor electrical box provided in an embodiment of this application;

[0019] Figure 3 This is a circuit diagram of an engine compartment electrical box provided in an embodiment of this application;

[0020] Figure 4 This is a flowchart of a power distribution method provided in an embodiment of this application.

[0021] The reference numerals in the figure indicate:

[0022] 1-Positive main fuse box; 2-Indoor electrical box; 3-Engine compartment electrical box; 4-Battery; 5-DC-DC power switch module; 6-First wiring harness; 7-Second wiring harness; 8-Third wiring harness; 9-Fourth wiring harness; 10-First power supply terminal; 11-Second power supply terminal; 12-First power switching switch; 13-Second power switching switch; 14-Vehicle load circuit; 15-Safety load circuit; 16-Engine compartment electrical box first power distributor; 17-Engine compartment electrical box second power distributor; and 18-Fuse.

[0023] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0026] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0027] In a first aspect, embodiments of this application provide a power distribution system, referring to... Figure 1 The power distribution system includes a positive main fuse box 1, an indoor electrical box 2, an engine compartment electrical box 3, a battery 4, a DC-DC power switch module 5, a first wiring harness 6, a second wiring harness 7, a third wiring harness 8, and a fourth wiring harness 9.

[0028] The positive terminal fuse box 1 is located on the positive terminal of the battery 4, the engine compartment electrical box 3 is located inside the engine compartment, and the indoor electrical box 2 is located between the engine compartment electrical box 3 and the DC-DC power switch module 5.

[0029] The indoor electrical box 2 is connected to the DC-DC power switch module 5 via the first wiring harness 6. The indoor electrical box 2 is connected to the positive main fuse box 1 via the second wiring harness 7. The engine compartment electrical box 3 is connected to the indoor electrical box 2 via the third wiring harness 8. The engine compartment electrical box 3 is connected to the DC-DC power switch module 5 via the fourth wiring harness 9.

[0030] In this embodiment, the DC-DC power switch module 5 is connected to the engine compartment electrical box 3 via the indoor electrical box 2, and the DC-DC power switch module 5 is directly connected to the engine compartment electrical box 3 via the fourth wiring harness 9.

[0031] In summary, in the power distribution system provided by this application embodiment, the indoor electrical box 2 is connected to the DC-DC power switch module 5 via a first wiring harness 6, to the positive main fuse box 1 via a second wiring harness 7, and to the engine compartment electrical box 3 via a third wiring harness 8. The engine compartment electrical box 3 is also directly connected to the DC-DC power switch module 5 via a fourth wiring harness 9. Therefore, the DC-DC power switch module 5 can supply power to the engine compartment electrical box 3 in two ways: via the indoor electrical box 2, and directly to the engine compartment electrical box 3. Furthermore, because the positive main fuse box 1 is located at the positive terminal of the battery 4, the DC-DC power switch module 5 can also charge the battery 4 via the positive main fuse box 1, so that the engine compartment electrical box 3 can be powered by the battery 4 after the vehicle is powered off. This achieves a dual-circuit power supply with mutual backup, improving the safety and reliability of the power distribution system. It saves cost and space while meeting the requirements of dual-circuit power supply.

[0032] Optionally, the third wiring harness 8 is fixed to the engine compartment electrical box 3 by the first nut, or the third wiring harness 8 is connected to the engine compartment electrical box 3 by the first connector. The fourth wiring harness 9 is fixed to the engine compartment electrical box 3 by the second nut, or the fourth wiring harness 9 is connected to the engine compartment electrical box 3 by the second connector.

[0033] In some embodiments, reference Figure 1 The DC-DC power switch module 5 includes a first power supply terminal 10, a second power supply terminal 11, a first power switching switch 12, and a second power switching switch 13; the first power supply terminal 10 is connected to the first power switching switch 12 and the first wiring harness 6 respectively; the second power supply terminal 11 is connected to the second power switching switch 13 and the fourth wiring harness 9 respectively.

[0034] In this embodiment, the first power supply terminal 10 is connected to the first power switching switch 12, and the first power switching switch 12 controls the on / off state of the circuit where the first power supply terminal 10 is located; the second power supply terminal 11 is connected to the second power switching switch 13, and the second power switching switch 13 controls the on / off state of the circuit where the second power supply terminal 11 is located.

[0035] In some embodiments, reference Figure 1 , Figure 2 and Figure 3 The engine compartment electrical box 3 includes a vehicle load circuit 14, a safety load circuit 15, a first power distributor 16, and a second power distributor 17. The first power supply terminal 10 is connected to the first power distributor 16 via the interior electrical box 2. The first power distributor 16 is connected to the vehicle load circuit 14 and the safety load circuit 15. The safety load circuit 15 contains the loads necessary for safe driving of the vehicle, and the vehicle load circuit 14 contains the loads of the entire vehicle other than those necessary for safe driving. The second power supply terminal 11 is connected to the second power distributor 17, which is also connected to the vehicle load circuit 14 and the safety load circuit 15.

[0036] In this embodiment, the first power supply terminal 10 is connected to the first power distributor 16 via the indoor electrical box 2, and the first power distributor 16 is then connected to the vehicle load circuit 14 and the safety load circuit 15. Simultaneously, the second power supply terminal 11 is connected to the second power distributor 17, which is also connected to the vehicle load circuit 14 and the safety load circuit 15. The second power distributor 17 of the engine compartment electrical box, along with the vehicle load circuit 14 and the safety load circuit 15 that are charged via the second power distributor 17, can serve as a backup circuit module. Therefore, the DC-DC power switch module can supply power to the engine compartment electrical box in two ways: via the indoor electrical box and directly to the engine compartment electrical box. This achieves independent dual power supply, improving the safety and reliability of the power distribution system.

[0037] Optionally, the vehicle load circuit 14 includes at least one of a first vehicle load and a second vehicle load, wherein the supply current required by the second vehicle load is greater than that required by the first vehicle load. The first vehicle load is a signal transceiver type vehicle load, and the second vehicle load is a power supply type vehicle load. For example, the safety load circuit 15 includes at least one of a first safety type load and a second safety type load, wherein the supply current required by the second safety type load is greater than that required by the first safety type load. The first safety type load is a signal transceiver type safety load, and the second safety type safety load is a power supply type safety load.

[0038] In some embodiments, reference Figure 2 and Figure 3 The indoor electrical box 2 includes a fuse 18; the indoor electrical box 2 is connected to the third wiring harness 8 through the fuse 18.

[0039] In this embodiment, a fuse 18 is added between the indoor electrical box 2 and the third wiring harness 8 to protect the circuit between the indoor electrical box 2 and the first power distributor 16 in the engine compartment electrical box. In one possible implementation, when the current in the circuit exceeds the rated current of the fuse 18 due to a collision or other reasons, the fuse 18 will melt and disconnect the circuit, thereby preventing circuit overload and potential damage or fire.

[0040] In some embodiments, reference Figure 2 and Figure 3The engine compartment electrical box 3 also includes a fuse 18; each vehicle load circuit 14 is connected to the first power distributor 16 of the engine compartment electrical box through a fuse 18, and / or each vehicle load circuit 14 is connected to the second power distributor 17 of the engine compartment electrical box through a fuse 18; each safety-class load circuit 15 is connected to the first power distributor 16 of the engine compartment electrical box through a fuse 18, and / or each safety-class load circuit 15 is connected to the second power distributor 17 of the engine compartment electrical box through a fuse 18.

[0041] In this embodiment, a fuse 18 is added between each vehicle load circuit 14 and each safety-type load circuit 15 and the first power distributor 16 of the engine compartment electrical box to protect the circuits between the vehicle load circuit 14 and the first power distributor 16 of the engine compartment electrical box, as well as the circuits between the safety-type load circuits 15 and the first power distributor 16 of the engine compartment electrical box. And / or a fuse 18 is added between each vehicle load circuit 14 and each safety-type load circuit 15 and the second power distributor 17 of the engine compartment electrical box to protect the circuits between the vehicle load circuit 14 and the second power distributor 17 of the engine compartment electrical box, as well as the circuits between the safety-type load circuits 15 and the second power distributor 17 of the engine compartment electrical box.

[0042] In some embodiments, reference Figure 1 The first power supply terminal 10 is connected to the positive main fuse box 1 via the indoor electrical box 2.

[0043] In this embodiment, the first power supply terminal 10 is connected to the positive main fuse box 1, so that when the vehicle is powered on, the battery 4 where the positive main fuse box 1 is located can be charged through the first power supply terminal 10, and the vehicle load circuit 14 and safety load circuit 15 can be charged through the battery 4 when the vehicle is powered off.

[0044] Based on the above Figure 1 The power distribution system shown in this application provides a power distribution method, as described in this embodiment. Figure 4 As shown, taking the application of this method to a power distribution system as an example, the method includes steps 401-404.

[0045] In step 401, a first detection result is obtained, which is used to indicate whether the vehicle is normal.

[0046] In one possible implementation, the vehicle's on-board diagnostics (OBD) system can be used to obtain the detection results indicating whether the vehicle is operating normally. If the OBD system's output indicates that the vehicle is operating normally, the first detection result indicates that the vehicle is normal. If the OBD system's output indicates that the vehicle has a fault, such as the OBD system outputting a fault code, the first detection result indicates that the vehicle is not functioning properly. The OBD system is located on the vehicle and monitors the operating status of important components such as the engine, chassis, and transmission system. If a fault is detected in any of these components, the OBD system outputs the corresponding fault code.

[0047] In step 402, in response to the first detection result indicating that the vehicle is normal, the first power switching switch and the second power switching switch are closed.

[0048] In one possible implementation, if the first detection result indicates that the vehicle is normal, the first power switch 12 and the second power switch 13 are switched on. The first power switch 12 controls the connection between the first power supply terminal 10 of the DC-DC power switch module 5 and the first wiring harness 6, thereby controlling the power supply from the first power supply terminal 10 to the indoor electrical box 2. The second power switch 13 controls the connection between the second power supply terminal 11 of the DC-DC power switch module 5 and the fourth wiring harness 9, thereby controlling the power supply from the second power supply terminal 11 to the engine compartment electrical box 3.

[0049] In step 403, when the first power switching switch is closed, the DC-DC power switching module supplies power to the indoor electrical box through the first wiring harness.

[0050] Optionally, if the first power switching switch 12 is closed, the first power supply terminal 10 is connected to the first wiring harness 6 and the indoor electrical box 2, that is, the current output by the first power supply terminal 10 is transmitted to the indoor electrical box 2 through the first wiring harness 6 to supply power to the battery 4 and the engine compartment electrical box 3.

[0051] In one possible implementation, after the first power supply terminal 10 is connected to the first wiring harness 6 and the indoor electrical box 2, the indoor electrical box 2 is connected to the third wiring harness 8 and the third wiring harness 8 is connected to the first power distributor 16 of the engine compartment electrical box. The current output from the first power supply terminal 10 is transmitted through the indoor electrical box 2 to the first power distributor 16 of the engine compartment electrical box to supply power to the vehicle load circuit 14 and the safety load circuit 15. The first power distributor 16 of the engine compartment electrical box is located inside the engine compartment electrical box 3 and is connected to the vehicle load circuit 14 and the safety load circuit 15. It is used to distribute current to the vehicle load circuit 14 and the safety load circuit 15 according to their current requirements.

[0052] Optionally, the safety-class load circuit 15 includes at least one of the vehicle's braking system circuit, the vehicle's steering system circuit, and the autonomous driving domain controller circuit. The vehicle load circuit 14 includes the remaining vehicle load circuits excluding the vehicle's braking system circuit, the vehicle's steering system circuit, and the autonomous driving domain controller circuit.

[0053] In step 404, when the second power switching switch is closed, the DC-DC power switching module supplies power to the engine compartment electrical box through the fourth wiring harness.

[0054] Optionally, if the second power switching switch 13 is closed, the second power supply terminal 11 is connected to the fourth wiring harness 9, and the fourth wiring harness 9 is connected to the engine compartment electrical box 3. That is, the current output from the second power supply terminal 11 is transmitted to the engine compartment electrical box 3 through the fourth wiring harness 9. This is used to power the engine compartment electrical box 3.

[0055] In one possible implementation, after the second power supply terminal 11 is connected to the fourth wiring harness 9, and the fourth wiring harness 9 is connected to the engine compartment electrical box 3, the fourth wiring harness 9 is connected to the second power distributor 17 of the engine compartment electrical box. The current output from the second power supply terminal 11 is transmitted to the second power distributor 17 of the engine compartment electrical box through the fourth wiring harness 9 to supply power to the vehicle load circuit 14 and the safety load circuit 15. The second power distributor 17 of the engine compartment electrical box is located inside the engine compartment electrical box 3, connected to the vehicle load circuit 14 and the safety load circuit 15. It is used to distribute current to the vehicle load circuit 14 and the safety load circuit 15 according to their current requirements.

[0056] In one possible implementation, the power supply method of the engine compartment electrical box 3 differs depending on the vehicle state, and the charging and discharging states of the corresponding battery 4 also differ. For example, the vehicle's power-on / off state is obtained, including vehicle power-on and vehicle power-off; in response to the vehicle being powered on, the interior electrical box 2 charges the battery 4 via the second wiring harness 7; in response to the vehicle being powered off, the battery 4 charges the engine compartment electrical box 3 via the second wiring harness 7.

[0057] Optionally, the vehicle's power-on / off status can be obtained through the vehicle's ECU (Electronic Control Unit), which includes both power-on and power-off states. After determining the vehicle's power-on / off status, if the vehicle is powered on, the first power supply terminal 10 charges the battery 4 through the interior electrical box 2, the second wiring harness 7, and the positive main fuse box 1 to prevent the battery 4 from becoming depleted. If the vehicle is powered off, the battery 4 charges the engine compartment electrical box 3 through the positive main fuse box 1, the second wiring harness 7, and the interior electrical box 2 to ensure that power is still supplied to the safety-type load circuit 15 when the vehicle is powered off.

[0058] For example, a second detection result and a third detection result are obtained. The second detection result is used to indicate whether the circuit where the first power supply terminal 10 is located is operating normally, and the third detection result is used to indicate whether the circuit where the second power supply terminal 11 is located is normal. In response to the second detection result indicating that the circuit where the first power supply terminal 10 is located is operating abnormally, and the third detection result indicating that the circuit where the second power supply terminal 11 is located is operating normally, the first power switching switch 12 is opened, the second power switching switch 13 remains closed, and the second power distributor 17 of the engine compartment electrical box supplies power to the safety load circuit 15 and disconnects the power supply to the vehicle load circuit 14.

[0059] In one possible implementation, the magnitude of a first current in the circuit containing the first power supply terminal 10 can be measured using a multimeter or oscilloscope, and compared to a first range. If the magnitude of the first current is within the first range, a second detection result indicates that the circuit containing the first power supply terminal 10 is normal; if the magnitude of the first current is outside the first range, the second detection result indicates that the circuit containing the first power supply terminal 10 is abnormal. Optionally, the magnitude of a second current in the circuit containing the second power supply terminal 11 can be measured using a multimeter or oscilloscope, and compared to a second range. If the magnitude of the second current is within the second range, a third detection result indicates that the circuit containing the second power supply terminal 11 is normal; if the magnitude of the second current is outside the second range, the third detection result indicates that the circuit containing the second power supply terminal 11 is abnormal. Here, the range of the current in the circuit containing the first power supply terminal 10 under normal conditions can be set as the first range, and the range of the current in the circuit containing the second power supply terminal 11 under normal conditions can be set as the second range.

[0060] For example, after determining the second and third detection results, if the second detection result indicates that the circuit where the first power supply terminal 10 is located is abnormal, and the third detection result indicates that the circuit where the second power supply terminal 11 is located is normal, the first power switching switch 12 is opened, and the second power switching switch 13 remains closed. With the first power switching switch 12 open and the second power switching switch 13 closed, the first power supply terminal 10 stops supplying power to the indoor electrical box 2 through the first wiring harness 6, and the second power supply terminal 11 directly supplies power to the engine compartment electrical box second power distributor 17 through the fourth wiring harness 9. The engine compartment electrical box second power distributor 17 supplies power to the safety-type load circuit 15, while disconnecting power to the vehicle load circuit 14. This avoids the safety of occupants inside the vehicle being compromised by stopping power to the safety-type load circuit 15 in the event of an abnormality at the first power supply terminal 10.

[0061] For example, a power supply switch can be set between the second power distributor 17 of the engine compartment electrical box and the vehicle load circuit 14. When the circuit where the first power supply terminal 10 is located is abnormal, the power supply switch is disconnected. At this time, the second power distributor 17 of the engine compartment electrical box supplies power to the safety load circuit 15 and disconnects the power supply to the vehicle load circuit 14.

[0062] In one possible implementation, in response to a second detection result indicating that the circuit where the first power supply terminal 10 is located is normal, and a third detection result indicating that the circuit where the second power supply terminal 11 is located is abnormal, the second power switching switch 13 is opened, the first power switching switch 12 remains closed, and the first power distributor 16 of the engine compartment electrical box supplies power to the safety-type load circuit 15 and disconnects power to the vehicle load circuit 14.

[0063] Optionally, if the second test result indicates that the first power supply terminal 10 is normal, and the third test result indicates that the second power supply terminal 11 is abnormal, the second power switching switch 13 is disconnected, while the first power switching switch 12 remains closed. With the second power switching switch 13 disconnected and the first power switching switch 12 closed, the second power supply terminal 11 stops directly supplying power to the second power distributor 17 of the engine compartment electrical box via the fourth wiring harness 9, and the first power supply terminal 10 supplies power to the second power distributor 17 of the engine compartment electrical box via the interior electrical box 2. The second power distributor 17 of the engine compartment electrical box supplies power to the safety-type load circuit 15, while disconnecting power to the vehicle load circuit 14; at this time, the power switch is disconnected. This prevents the safety of occupants inside the vehicle from being compromised if the second power supply terminal 11 malfunctions and power supply to the safety-type load circuit 15 is stopped.

[0064] This disclosure provides a power distribution system comprising a positive main fuse box, an interior electrical box, an engine compartment electrical box, a battery, and a DC-DC power switch module. The interior electrical box is connected to the DC-DC power switch module via a first wiring harness, connected to the positive main fuse box via a second wiring harness, and connected to the engine compartment electrical box via a third wiring harness. The engine compartment electrical box is also directly connected to the DC-DC power switch module via a fourth wiring harness. Thus, the DC-DC power switch module can supply power to the engine compartment electrical box in two ways: via the interior electrical box and directly to the engine compartment electrical box, achieving a dual-path power supply with mutual backup, improving the safety and reliability of the power distribution system. Compared to the existing technology that typically employs two independent power supply systems, this system saves cost and space while meeting the requirements of dual-path power supply.

[0065] In this disclosure, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term “multiple” means two or more, unless otherwise expressly defined.

[0066] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0067] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A power distribution system, characterized in that, The power distribution system includes a positive main fuse box (1), an indoor electrical box (2), an engine compartment electrical box (3), a battery (4), a DC-to-DC power switch module (5), a first wiring harness (6), a second wiring harness (7), a third wiring harness (8), and a fourth wiring harness (9). The positive terminal fuse box (1) is located on the positive terminal of the battery (4), the engine compartment electrical box (3) is located inside the engine compartment, and the indoor electrical box (2) is located between the engine compartment electrical box (3) and the DC-DC power switch module (5). The indoor electrical box (2) is connected to the DC-DC power switch module (5) via the first wiring harness (6), the indoor electrical box (2) is connected to the positive main fuse box (1) via the second wiring harness (7), the engine compartment electrical box (3) is connected to the indoor electrical box (2) via the third wiring harness (8), and the engine compartment electrical box (3) is connected to the DC-DC power switch module (5) via the fourth wiring harness (9). The DC-DC power switch module (5) includes a first power supply terminal (10), a second power supply terminal (11), a first power switching switch (12), and a second power switching switch (13). The first power supply terminal (10) is connected to the first power switching switch (12) and the first wiring harness (6) respectively; The second power supply terminal (11) is connected to the second power switching switch (13) and the fourth wiring harness (9) respectively; The engine compartment electrical box (3) includes a vehicle load circuit (14), a safety load circuit (15), a first power distributor (16) for the engine compartment electrical box, and a second power distributor (17) for the engine compartment electrical box.

2. The power distribution system according to claim 1, characterized in that, The first power supply terminal (10) is connected to the first power distributor (16) of the engine compartment electrical box via the indoor electrical box (2). The first power distributor (16) of the engine compartment electrical box is connected to the vehicle load circuit (14) and the safety load circuit (15). The safety load circuit (15) is the circuit containing the loads necessary for safe driving of the vehicle. The vehicle load circuit (14) is the circuit containing the other vehicle loads besides the loads necessary for safe driving of the vehicle. The second power supply terminal (11) is connected to the second power distributor (17) of the engine compartment electrical box, and the second power distributor (17) of the engine compartment electrical box is connected to the vehicle load circuit (14) and the safety load circuit (15).

3. The power distribution system according to claim 2, characterized in that, The indoor electrical box (2) includes a fuse (18); The indoor electrical box (2) is connected to the third wiring harness (8) via the fuse (18).

4. The power distribution system according to claim 2, characterized in that, The engine compartment electrical box (3) also includes a fuse (18); Each of the vehicle load circuits (14) is connected to the first power distributor (16) of the engine compartment electrical box via a fuse (18), and / or each of the vehicle load circuits (14) is connected to the second power distributor (17) of the engine compartment electrical box via a fuse (18); Each of the safety-class load circuits (15) is connected to the first power distributor (16) of the engine compartment electrical box via a fuse (18), and / or each of the safety-class load circuits (15) is connected to the second power distributor (17) of the engine compartment electrical box via a fuse (18).

5. The power distribution system according to claim 1, characterized in that, The first power supply terminal (10) is connected to the positive main fuse box (1) via the indoor electrical box (2).

6. A power distribution method, said method being performed by the power distribution system according to any one of claims 1-5, characterized in that, The method includes: Obtain a first detection result, which is used to indicate whether the vehicle is operating normally; In response to the first detection result indicating that the vehicle is operating normally, the first power switching switch (12) and the second power switching switch (13) are closed. When the first power switching switch (12) is closed, the DC-DC power switching module (5) supplies power to the indoor electrical box (2) through the first wiring harness (6). When the second power switching switch (13) is closed, the DC-DC power switching module (5) supplies power to the engine compartment electrical box (3) through the fourth wiring harness (9).

7. The method according to claim 6, characterized in that, The method further includes: Obtain the vehicle's power-on / off status, which includes the vehicle being powered on and powered off. In response to the power-on / off state of the vehicle, the indoor electrical box (2) charges the battery (4) through the second wiring harness (7); In response to the vehicle's power-on / off state, when the vehicle is powered off, the battery (4) charges the engine compartment electrical box (3) through the second wiring harness (7).

8. The method according to claim 6, characterized in that, The method further includes: Obtain a second detection result and a third detection result. The second detection result is used to indicate whether the circuit where the first power supply terminal (10) is located is operating normally, and the third detection result is used to indicate whether the circuit where the second power supply terminal (11) is located is normal. In response to the second detection result indicating that the circuit where the first power supply terminal (10) is located is operating abnormally, and the third detection result indicating that the circuit where the second power supply terminal (11) is located is operating normally, the first power switching switch (12) is opened, the second power switching switch (13) remains closed, and the second power distributor (17) of the engine compartment electrical box supplies power to the safety load circuit (15) and disconnects power to the vehicle load circuit (14).

9. The method according to claim 8, characterized in that, The method further includes: In response to the second detection result indicating that the circuit where the first power supply terminal (10) is located is operating normally, and the third detection result indicating that the circuit where the second power supply terminal (11) is located is operating abnormally, the second power switching switch (13) is disconnected, the first power switching switch (12) remains closed, and the first power distributor (16) of the engine compartment electrical box supplies power to the safety load circuit (15) and disconnects power to the vehicle load circuit (14).

Images