Vehicle weak current system and vehicle

Abstract

The invention provides a vehicle weak current system and a vehicle, and belongs to the technical field of automobiles. According to the method and the device, for each electric device of the vehicle, which electric box is connected with the electric device is determined according to the estimated line length of the electric device and the engine compartment electric box and the estimated line length of the electric device and the passenger compartment electric box. Therefore, the electric equipment in the electric vehicle can be regularly distributed, the length of the electric wire required for supplying power to the electric equipment can be reduced as much as possible, the total length of the electric wire required in the vehicle can be reduced on the whole, and the electric wire in the vehicle is simpler and more regular.

Description

Technical Field

[0001] The present disclosure relates to the field of automobile technology, and in particular to a vehicle weak current system and a vehicle. Background Art

[0002] Electric vehicles are equipped with a variety of weak-current electrical equipment, such as electric tailgates, air conditioning panels, ambient lights, etc. In order to ensure the power supply of these electrical equipment, electric vehicles are equipped with a vehicle weak-current system. The vehicle weak-current system includes several electrical boxes (two are more common), which are used to divide one power supply line into multiple power supply lines to power multiple electrical equipment. Different electrical boxes, between electrical boxes and weak-current batteries, and between electrical boxes and electrical equipment all need to be connected by wires. There are many electrical equipment in electric vehicles, which will make the wire connections very messy. Summary of the invention

[0003] The present disclosure provides a vehicle weak current system that can solve the above technical problems existing in the related technologies. The technical solution is as follows:

[0004] In a first aspect, a vehicle weak current system is provided, the vehicle weak current system being applied to a vehicle, the vehicle weak current system comprising a weak current battery (1), an engine compartment electrical box (2), a passenger compartment electrical box (3) and a plurality of electrical devices (4);

[0005] The engine compartment electrical box (2) is electrically connected to the weak-current battery (1), the passenger compartment electrical box (3), and a first electrical device (4a) among the plurality of electrical devices (4), wherein the length of the line electrically connecting the first electrical device (4a) and the engine compartment electrical box (2) is less than or equal to the estimated length of the line between the first electrical device (4a) and the passenger compartment electrical box (3);

[0006] The passenger compartment electrical box (3) is electrically connected to a second electrical device (4b) among the multiple electrical devices (4), wherein the length of the line electrically connecting the second electrical device (4b) and the passenger compartment electrical box (3) is less than or equal to the estimated length of the line between the second electrical device (4b) and the engine compartment electrical box (2).

[0007] In a possible implementation, the estimated line length is: if devices are electrically connected via lines, the shortest line length after line planning is performed based on the internal structure of the vehicle.

[0008] In a possible implementation, the low-current battery (1) is located in the engine compartment of the vehicle, the engine compartment electrical box (2) is located in the engine compartment, and the passenger compartment electrical box (3) is located inside the center console of the passenger compartment of the vehicle.

[0009] In a possible implementation, the length of the line electrically connecting the engine compartment electrical box (2) and the weak-current battery (1) is shorter than the estimated length of the line electrically connecting the passenger compartment electrical box (3) and the weak-current battery (1).

[0010] In a possible implementation, the engine compartment electrical box (2) comprises a first distribution circuit (21) and a second distribution circuit (22);

[0011] The first distribution circuit (21) comprises a first input end (21a) and a plurality of first output ends (21b), wherein the first input end (21a) is electrically connected to the weak-current battery (1), and at least one first output end (21b) is electrically connected to different first electrical equipment (4a).

[0012] The second distribution circuit (22) comprises a second input end (22a) and a plurality of second output ends (22b), the second input end (22a) being electrically connected to the weak-current battery (1), and at least one second output end (22b) being electrically connected to different first electrical devices (4a);

[0013] At least one first output terminal (21b) not connected to the first electrical device (4a) and / or at least one second output terminal (22b) not connected to the first electrical device (4a) is electrically connected to the passenger compartment electrical box (3).

[0014] In a possible implementation, the rated current of the first electrical device (4a) connected to the first distribution circuit (21) is within a first current range, the rated current of the first electrical device (4a) connected to the second distribution circuit (22) is within a second current range, and the lower limit of the first current range is greater than or equal to the upper limit of the second current range.

[0015] In a possible implementation, a fuse (23) is respectively connected to the line electrically connecting the first distribution circuit (21) and each first electrical device (4a), and a fuse (23) is respectively connected to the line electrically connecting the second distribution circuit (22) and each first electrical device (4a).

[0016] In a possible implementation, the engine compartment electrical box (2) further includes a third distribution circuit (24);

[0017] The third distribution circuit (24) comprises a third input terminal (24a) and a plurality of third output terminals (24b), wherein the third input terminal (24a) is electrically connected to the weak-current battery (1), and at least one third output terminal (24b) is electrically connected to different first electrical equipment (4a).

[0018] In a possible implementation manner, the rated current of the first electrical device (4a) connected to the third distribution circuit (24) is within a second current range.

[0019] In a possible implementation, the third distribution circuit (24) further includes a switch unit (25), and the switch unit (25) is electrically connected to the controller;

[0020] The switch unit (25) is used to connect or disconnect the electrical connection between the third input terminal (24a) and all third output terminals (24b) under the control of the controller.

[0021] In a possible implementation, a fuse (23) is respectively connected to the line electrically connecting the third distribution circuit (24) and each first electrical device (4a).

[0022] In a possible implementation, the passenger compartment electrical box (3) comprises a fourth distribution circuit (31) and a fifth distribution circuit (32), and the fourth distribution circuit (31) and the fifth distribution circuit (32) are connected in parallel;

[0023] The fourth distribution circuit (31) comprises at least one fourth input terminal (31a) and a plurality of fourth output terminals (31b), wherein the at least one fourth input terminal (31a) is electrically connected to the engine compartment electrical box (2), and the at least one fourth output terminal (31b) is electrically connected to different second electrical devices (4b) respectively;

[0024] The fifth distribution circuit (32) comprises at least one fifth input terminal (32a) and a plurality of fifth output terminals (32b), wherein the at least one fifth input terminal (32a) is electrically connected to the engine compartment electrical box (2), and the at least one fifth output terminal (32b) is electrically connected to different second electrical devices (4b).

[0025] In a possible implementation manner, the rated current of the second electrical equipment (4b) connected to the fourth distribution circuit (31) and the fifth distribution circuit (32) is within a second current range.

[0026] In a possible implementation, the fifth distribution circuit (32) further includes a switch unit (34), and the switch unit (34) is electrically connected to the controller;

[0027] The switch unit (34) is used to connect or disconnect the electrical connection between the fifth input terminal (32a) and all fifth output terminals (32b) under the control of the controller.

[0028] In a possible implementation, a fuse (33) is respectively connected to the line electrically connecting the fourth distribution circuit (31) and each second electrical device (4b), and a fuse (33) is respectively connected to the line electrically connecting the fifth distribution circuit (32) and each second electrical device (4b).

[0029] In a possible implementation, the first electrical device (4a) is located in the engine compartment, and the second electrical device (4b) is located in the passenger compartment.

[0030] In a possible implementation, the engine compartment electrical box (2) is electrically connected to a third electrical device (4c), an estimated line length between the third electrical device (4c) and the passenger compartment electrical box (3) is less than or equal to the line length of the electrical connection between the third electrical device (4c) and the engine compartment electrical box (2), and the estimated line length between the third electrical device (4c) and the passenger compartment electrical box (3) plus the line length of the electrical connection between the engine compartment electrical box (2) and the passenger compartment electrical box (3) is greater than the line length of the electrical connection between the third electrical device (4c) and the engine compartment electrical box (2).

[0031] In a possible implementation, the engine compartment electrical box (2) and the passenger compartment electrical box (3) are directly opposite to each other in the length direction of the vehicle, and the third electrical device (4c) is located between the engine compartment electrical box (2) and the passenger compartment electrical box (3) in the length direction of the vehicle, and the length of the line of the electrical connection between the third electrical device (4c) and the engine compartment electrical box (2) is greater than the estimated length of the line between the third electrical device (4c) and the passenger compartment electrical box (3).

[0032] In a possible implementation, the engine compartment electrical box (2) and the third electrical device (4c) are directly opposite in the length direction of the vehicle, the passenger compartment electrical box (3) and the third electrical device (4c) are directly opposite in the width direction of the vehicle, the line length of the electrical connection between the third electrical device (4c) and the engine compartment electrical box (2) is greater than the estimated line length between the third electrical device (4c) and the passenger compartment electrical box (3), and the line length of the electrical connection between the engine compartment electrical box (2) and the passenger compartment electrical box (3) is greater than the line length of the electrical connection between the third electrical device (4c) and the engine compartment electrical box (2).

[0033] In a possible implementation, for any two first electrical devices (4a) that meet the synchronous working condition, on the engine compartment electrical box (2), the distance between the two first output terminals (21b) respectively electrically connected to the two first electrical devices is greater than a first specified distance, and the distance between the two lines of the engine compartment electrical box (2) respectively electrically connected to the two first electrical devices is greater than a second specified distance, wherein the synchronous working condition is that the average value of the proportion of the duration of the two first electrical devices working simultaneously in the duration of the vehicle being in the start-up state determined based on historical usage data of multiple vehicles is greater than a preset threshold.

[0034] In a second aspect, a vehicle is provided, comprising the vehicle weak current system as described in any one of the first aspects.

[0035] In the present disclosure, for each electric device of the vehicle, the electric device is connected to which electric box according to the estimated line length between the electric device and the electric box in the engine compartment and the estimated line length between the electric device and the electric box in the passenger compartment. In this way, the electric devices in the electric vehicle can be regularly distributed, and the length of the wires required to power the electric devices can be reduced as much as possible, which can reduce the total length of the wires required inside the vehicle as a whole, making the wires in the vehicle more concise and regular. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 is a structural schematic diagram of a vehicle weak current system shown in an embodiment of the present disclosure;

[0038] Figure 2 is a schematic diagram of the internal connection of a vehicle weak current system shown in an embodiment of the present disclosure;

[0039] Figure 3 is a schematic diagram of the internal connection of a vehicle weak current system shown in an embodiment of the present disclosure;

[0040] Figure 4 It is a schematic diagram of the interior of an engine compartment electrical box 2 shown in an embodiment of the present disclosure;

[0041] Figure 5 It is a schematic diagram of the interior of an engine compartment electrical box 2 shown in an embodiment of the present disclosure;

[0042] Figure 6It is a schematic diagram of the interior of an engine compartment electrical box 2 shown in an embodiment of the present disclosure;

[0043] Figure 7 It is a schematic diagram of the interior of an engine compartment electrical box 2 shown in an embodiment of the present disclosure;

[0044] Figure 8 is an internal schematic diagram of a passenger compartment electrical box 3 shown in an embodiment of the present disclosure;

[0045] Fig. 9 is an internal schematic diagram of a passenger compartment electrical box 3 shown in an embodiment of the present disclosure;

[0046] Fig.10 is a schematic diagram of the internal connection of a vehicle weak current system shown in an embodiment of the present disclosure;

[0047] Fig.11 is a schematic diagram of the internal connection of a vehicle weak current system shown in an embodiment of the present disclosure;

[0048] Fig.12 It is a schematic diagram of the internal connection of a vehicle weak current system shown in an embodiment of the present disclosure.

[0049] Reference numerals:

[0050] 1. Weak battery;

[0051] 2. Engine compartment electrical box, 21. First distribution circuit, 22. Second distribution circuit, 21a. First input end of the first distribution circuit, 21b. First output end of the first distribution circuit, 22a. Second input end of the second distribution circuit, 22b. Second output end of the second distribution circuit, 23. Fuse, 24. Third distribution circuit, 24a. Third input end of the third distribution circuit, 24b. Third output end of the third distribution circuit, 25. Switch unit;

[0052] 3. Passenger compartment electrical box, 31. Fourth distribution circuit, 31a. Fourth input terminal of fourth distribution circuit, 31b. Fourth output terminal of fourth distribution circuit, 32. Fifth distribution circuit, 32a. Fifth input terminal of fifth distribution circuit, 32b. Fifth output terminal of fifth distribution circuit, 33. Fuse, 34. Switch unit;

[0053] 4. Multiple electrical devices, 4a. A first electrical device, 4b. A second electrical device, 4c. A third electrical device. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0055] The embodiment of the present disclosure provides a vehicle weak current system, which is applied to a vehicle, such as Figure 1 As shown, the vehicle weak current system includes a weak current battery 1, an engine compartment electrical box 2, a passenger compartment electrical box 3, and a plurality of electrical devices 4. The weak current battery 1 is located in the engine compartment of the vehicle, the engine compartment electrical box 2 is located in the engine compartment, and the passenger compartment electrical box 3 can be located inside the center console of the passenger compartment of the vehicle. The location distribution of the vehicle weak current system on the vehicle can be, for example, Figure 1 As shown, the engine compartment electrical box 2 is generally located on the left side of the vehicle's engine compartment, near the weak-current battery 1, and the passenger compartment electrical box 3 is located inside the center console. When the driver sits in the driver's seat, the passenger compartment electrical box 3 is generally in front of the driver's knees.

[0056] The engine compartment electrical box 2 is electrically connected to the weak-current battery 1, the passenger compartment electrical box 3, and the first electrical device 4a among the multiple electrical devices 4, wherein the length of the line electrically connecting the first electrical device 4a to the engine compartment electrical box 2 is less than or equal to the estimated line length between the first electrical device 4a and the passenger compartment electrical box 3. The estimated line length is: if the devices are electrically connected through lines, the shortest line length after line planning based on the internal structure of the vehicle. The above-mentioned “between devices” refers to between the electrical device 4 and the engine compartment electrical box 2, between the electrical device 4 and the passenger compartment electrical box 3, between the weak-current battery 1 and the engine compartment electrical box 2, or between the weak-current battery 1 and the passenger compartment electrical box 3. For example, Figure 2 As shown, the estimated line length between the first electric device 4a and the engine compartment electrical box 2 is the length A, and the estimated line length between the first electric device 4a and the passenger compartment electrical box 3 is the length B. The first electric device 4a is generally located in the engine compartment, for example, electric power steering (EPS), stepless fan (fan speed linearly changes), integrated power brake (IPB), electric tailgate (also called electric trunk), sunroof, electronic expansion valve, three-way water valve, battery water pump, motor water pump, etc.

[0057] The passenger compartment electrical box 3 is electrically connected to the second electrical device 4b among the plurality of electrical devices 4, wherein the length of the line electrically connected between the second electrical device 4b and the passenger compartment electrical box 3 is less than or equal to the estimated length of the line between the second electrical device 4b and the engine compartment electrical box 2. Figure 2 As shown, the estimated line length between the second electric device 4b and the passenger compartment electrical box 3 is the length C. The second electric device 4b is generally located in the passenger compartment.

[0058] The length of the line electrically connecting the engine compartment electrical box 2 and the weak-current battery 1 is shorter than the estimated length of the line electrically connecting the passenger compartment electrical box 3 and the weak-current battery 1. Figure 3 As shown, the line length between the engine compartment electrical box 2 and the weak-current battery 1 is length A, and the estimated line length between the passenger compartment electrical box 3 and the weak-current battery 1 is length B.

[0059] In one possible implementation, for example Figure 4 As shown, the engine compartment electrical box 2 includes a first distribution circuit 21 and a second distribution circuit 22 .

[0060] For example Figure 4 As shown, the first distribution circuit 21 has a first input terminal 21a and a plurality of first output terminals 21b, the first input terminal 21a is electrically connected to the weak battery 1, and at least one first output terminal 21b is electrically connected to different first electrical equipment 4a. The first electrical equipment 4a can be an electric power steering system (EPS), a stepless fan (fan speed linearly changes), an integrated power brake (IPB), and the like.

[0061] For example Figure 4 As shown, the second distribution circuit 22 has a second input terminal 22a and a plurality of second output terminals 22b, the second input terminal 22a is electrically connected to the weak battery 1, and at least one second output terminal 22b is electrically connected to different first electrical devices 4a. The first electrical device 4a can be a seat adjustment, an electric tailgate, a sunroof, etc.

[0062] At least one first output terminal 21 b not connected to the first electrical device 4 a and / or at least one second output terminal 22 b not connected to the first electrical device 4 a is electrically connected to the passenger compartment electrical appliance box 3 .

[0063] The rated current of the first electrical equipment 4a connected to the first distribution circuit 21 is within a first current range, the rated current of the first electrical equipment 4a connected to the second distribution circuit 22 is within a second current range, and the lower limit of the first current range is greater than or equal to the upper limit of the second current range. For example, the first current range is 50A to 175A, and the second current range is 0 to 40A.

[0064] For example Figure 5 As shown, the lines electrically connected between the first distribution circuit 21 and each first electrical device 4a are respectively connected with fuses 23, and the lines electrically connected between the second distribution circuit 22 and each first electrical device 4a are respectively connected with fuses 23. The fuse capacities of the fuses 23 are different. For example, the fuse capacity of the fuse 23 connected to the line electrically connected between the first distribution circuit 21 and each first electrical device 4a is 50A to 175A, and the fuse capacity of the fuse 23 connected to the line electrically connected between the second distribution circuit 22 and each first electrical device 4a is 0 to 40A.

[0065] In a possible implementation, the engine compartment electrical box 2 further includes a third distribution circuit 24 , and the third distribution circuit 24 is connected in parallel with the first distribution circuit 21 and the second distribution circuit 22 .

[0066] For example Figure 6 As shown, the third distribution circuit 24 has a third input terminal 24a and a plurality of third output terminals 24b, the third input terminal 24a is electrically connected to the weak battery 1, and at least one third output terminal 24b is electrically connected to different first electrical equipment 4a. The first electrical equipment 4a can be an electronic expansion valve, a three-way water valve, a battery water pump, a motor water pump, and the like.

[0067] The rated current of the first electric device 4a connected to the third distribution circuit 24 is within the second current range, for example, 0 to 40 amperes.

[0068] For example Figure 7 As shown, the third distribution circuit 24 further includes a switch unit 25, which is electrically connected to the controller. The switch unit 25 is used to connect or disconnect the electrical connection between the third input terminal 24a and all the third output terminals 24b under the control of the controller. After receiving the control signal, the controller can control the switch unit 25 to connect or disconnect. The controller can be a vehicle computer.

[0069] In a possible implementation, the passenger compartment electrical equipment box 3 includes a fourth distribution circuit 31 and a fifth distribution circuit 32 , and the fourth distribution circuit 31 and the fifth distribution circuit 32 are connected in parallel.

[0070] For example Figure 8 As shown, the fourth distribution circuit 31 has at least one fourth input terminal 31a and multiple fourth output terminals 31b, at least one fourth input terminal 31a is electrically connected to the engine compartment electrical box 2, and at least one fourth output terminal 31b is electrically connected to different second electrical equipment 4b. The second electrical equipment 4b can be an instrument screen, an air conditioning panel, an ambient light, an automatic air conditioner, and the like.

[0071] For example Figure 8 As shown, the fifth distribution circuit 32 has at least one fifth input terminal 32a and multiple fifth output terminals 32b, at least one fifth input terminal 32a is electrically connected to the engine compartment electrical box 2, and at least one fifth output terminal 32b is electrically connected to different second electrical equipment 4b. The second electrical equipment 4b can be electric rearview mirror heating, rear defrosting, etc.

[0072] The rated current of the second electric device 4b connected to the fourth distribution circuit 31 and the fifth distribution circuit 32 is within the second current range, which is 0 to 40 amperes.

[0073] For example Fig. 9 As shown, the fifth distribution circuit 32 further includes a switch unit 34, which is electrically connected to the controller, and is used to connect or disconnect the electrical connection between the fifth input terminal 32a and all the fifth output terminals 32b under the control of the controller. A fuse 33 is connected to the line electrically connected between the fourth distribution circuit 31 and each second electrical device 4b, and a fuse 33 is connected to the line electrically connected between the fifth distribution circuit 32 and each second electrical device 4b.

[0074] In a possible implementation, the engine compartment electrical box 2 is electrically connected to the third electrical device 4c, the estimated line length between the third electrical device 4c and the passenger compartment electrical box 3 is less than or equal to the line length between the third electrical device 4c and the engine compartment electrical box 2, and the estimated line length between the third electrical device 4c and the passenger compartment electrical box 3 plus the line length between the engine compartment electrical box 2 and the passenger compartment electrical box 3 is greater than the line length between the third electrical device 4c and the engine compartment electrical box 2. Fig.10 As shown, the estimated line length between the third electrical equipment 4c and the passenger compartment electrical box 3 is the length of B, the line length of the third electrical equipment 4c electrically connected to the engine compartment electrical box 2 is the length of A, the estimated line length between the third electrical equipment 4c and the passenger compartment electrical box 3 plus the line length of the electrical connection between the engine compartment electrical box 2 and the passenger compartment electrical box 3 is the length of B+C, and the line length of the electrical connection between the third electrical equipment 4c and the engine compartment electrical box 2 is the length of A. Therefore, even if the estimated line length of the passenger compartment electrical box 3 of the third electrical equipment 4c is smaller, the line length used for the electrical connection between the third electrical equipment 4c and the weak current battery 1 through the engine compartment electrical box 2 is smaller, so that the line electrically connecting the third electrical equipment 4c to the engine compartment electrical box 2 is simpler and regular.

[0075] In a possible implementation, the engine compartment electrical box 2 and the passenger compartment electrical box 3 are directly opposite in the length direction of the vehicle, and the third electrical device 4c is located between the engine compartment electrical box 2 and the passenger compartment electrical box 3 in the length direction of the vehicle, and the length of the line of the electrical connection between the third electrical device 4c and the engine compartment electrical box 2 is greater than the estimated length of the line between the third electrical device 4c and the passenger compartment electrical box 3. Fig.11 As shown, the length of the line electrically connecting the third electrical device 4c and the electrical box 2 in the engine compartment is length A, and the estimated length of the line between the third electrical device 4c and the electrical box 3 in the passenger compartment is length B.

[0076] In a possible implementation, the engine compartment electrical box 2 and the third electrical device 4c are directly opposite in the length direction of the vehicle, the passenger compartment electrical box 3 and the third electrical device 4c are directly opposite in the width direction of the vehicle, the length of the electrical connection between the third electrical device 4c and the engine compartment electrical box 2 is greater than the estimated length of the electrical connection between the third electrical device 4c and the passenger compartment electrical box 3, and the length of the electrical connection between the engine compartment electrical box 2 and the passenger compartment electrical box 3 is greater than the length of the electrical connection between the third electrical device 4c and the engine compartment electrical box 2. Fig.12 As shown, the line length of the electrical connection between the third electrical equipment 4c and the engine compartment electrical box 2 is the length of A, the estimated line length between the third electrical equipment 4c and the passenger compartment electrical box 3 is the length of B, the line length of the electrical connection between the engine compartment electrical box 2 and the passenger compartment electrical box 3 is the length of C, and the line length of the electrical connection between the third electrical equipment 4c and the engine compartment electrical box 2 is the length of A.

[0077] In a possible implementation, a technician may pre-collect usage data of each electrical device within a fixed duration, which may be one month, one year, etc. The usage data may include the usage time period of the electrical device, determine the average value of the proportion of the duration of any two electrical devices working simultaneously in the duration of the vehicle being in the startup state based on the usage data, set a preset threshold, and determine the two electrical devices corresponding to the average value greater than the preset threshold as electrical devices that meet the synchronous working condition. For any two first electrical devices 4a that meet the synchronous working condition, on the engine compartment electrical box 2, the distance between the two first output terminals 21b electrically connected to the two first electrical devices respectively is greater than the first specified distance, and the distance between the two lines electrically connected to the engine compartment electrical box 2 respectively and the two first electrical devices is greater than the second specified distance, wherein the synchronous working condition is that the average value of the proportion of the duration of the two first electrical devices working simultaneously in the duration of the vehicle being in the startup state determined based on the historical usage data of multiple vehicles is greater than the preset threshold.

[0078] In the disclosed embodiment, for each electric device in the vehicle, the estimated line length between the electric device and the electric box in the engine compartment and the estimated line length between the electric device and the electric box in the passenger compartment determines which electric box the electric device is connected to. In this way, the electric devices in the electric vehicle can be regularly distributed, and the length of the wires required to power the electric devices can be reduced as much as possible, which can reduce the total length of the wires required inside the vehicle as a whole, making the wires in the vehicle more concise and regular.

[0079] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0080] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0081] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0082] It can be further understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0083] It is further understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection without other components between the two, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0084] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0085] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the scheme disclosed herein. The present disclosure is intended to cover any variation, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are considered to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the scope of rights.

[0086] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A vehicle weak current system, characterized in that: The vehicle weak current system is applied to a vehicle, and comprises a weak current battery (1), an engine compartment electrical box (2), a passenger compartment electrical box (3), and a plurality of electrical devices (4); The engine compartment electrical box (2) is electrically connected to the weak-current battery (1), the passenger compartment electrical box (3), and a first electrical device (4a) among the plurality of electrical devices (4), wherein the length of the line electrically connecting the first electrical device (4a) and the engine compartment electrical box (2) is less than or equal to the estimated length of the line between the first electrical device (4a) and the passenger compartment electrical box (3); The passenger compartment electrical box (3) is electrically connected to a second electrical device (4b) among the multiple electrical devices (4), wherein the length of the line electrically connecting the second electrical device (4b) and the passenger compartment electrical box (3) is less than or equal to the estimated length of the line between the second electrical device (4b) and the engine compartment electrical box (2).

2. The vehicle weak current system according to claim 1, characterized in that: The estimated line length is: if devices are electrically connected through lines, the shortest line length after line planning is performed based on the internal structure of the vehicle.

3. The vehicle weak current system according to claim 1, characterized in that: The weak-current battery (1) is located in the engine compartment of the vehicle, the engine compartment electrical box (2) is located in the engine compartment, and the passenger compartment electrical box (3) is located inside the center console of the passenger compartment of the vehicle.

4. The vehicle weak current system according to claim 1, characterized in that: The engine compartment electrical box (2) comprises a first distribution circuit (21) and a second distribution circuit (22); The first distribution circuit (21) comprises a first input end (21a) and a plurality of first output ends (21b), wherein the first input end (21a) is electrically connected to the weak-current battery (1), and at least one first output end (21b) is electrically connected to different first electrical equipment (4a). The second distribution circuit (22) comprises a second input end (22a) and a plurality of second output ends (22b), the second input end (22a) being electrically connected to the weak-current battery (1), and at least one second output end (22b) being electrically connected to different first electrical devices (4a); At least one first output terminal (21b) not connected to the first electrical device (4a) and / or at least one second output terminal (22b) not connected to the first electrical device (4a) is electrically connected to the passenger compartment electrical box (3).

5. The vehicle weak current system according to claim 4, characterized in that: The engine compartment electrical box (2) further comprises a third distribution circuit (24); The third distribution circuit (24) comprises a third input terminal (24a) and a plurality of third output terminals (24b), wherein the third input terminal (24a) is electrically connected to the weak-current battery (1), and at least one third output terminal (24b) is electrically connected to different first electrical equipment (4a).

6. The vehicle weak current system according to claim 5, characterized in that: The third distribution circuit (24) further comprises a switch unit (25), and the switch unit (25) is electrically connected to the controller; The switch unit (25) is used to connect or disconnect the electrical connection between the third input terminal (24a) and all third output terminals (24b) under the control of the controller.

7. The vehicle weak current system according to claim 1, characterized in that: The passenger compartment electrical box (3) comprises a fourth distribution circuit (31) and a fifth distribution circuit (32), wherein the fourth distribution circuit (31) and the fifth distribution circuit (32) are connected in parallel; The fourth distribution circuit (31) comprises at least one fourth input terminal (31a) and a plurality of fourth output terminals (31b), wherein the at least one fourth input terminal (31a) is electrically connected to the engine compartment electrical box (2), and the at least one fourth output terminal (31b) is electrically connected to different second electrical devices (4b) respectively; The fifth distribution circuit (32) comprises at least one fifth input terminal (32a) and a plurality of fifth output terminals (32b), wherein the at least one fifth input terminal (32a) is electrically connected to the engine compartment electrical box (2), and the at least one fifth output terminal (32b) is electrically connected to different second electrical devices (4b).

8. The vehicle weak current system according to claim 7, characterized in that: The fifth distribution circuit (32) further comprises a switch unit (34), and the switch unit (34) is electrically connected to the controller; The switch unit (34) is used to connect or disconnect the electrical connection between the fifth input terminal (32a) and all fifth output terminals (32b) under the control of the controller.

9. The vehicle weak current system according to claim 1, characterized in that: The engine compartment electrical box (2) is electrically connected to a third electrical device (4c); an estimated line length between the third electrical device (4c) and the passenger compartment electrical box (3) is less than or equal to a line length between the third electrical device (4c) and the engine compartment electrical box (2); and an estimated line length between the third electrical device (4c) and the passenger compartment electrical box (3) plus a line length between the engine compartment electrical box (2) and the passenger compartment electrical box (3) is greater than a line length between the third electrical device (4c) and the engine compartment electrical box (2).

10. A vehicle, characterized in that: The vehicle includes the vehicle weak current system as described in any one of claims 1-9.

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