Vehicle low-voltage power supply structure, power supply system and automobile

Abstract

The invention relates to an automotive low-voltage power supply structure, a power supply system and an automobile, the automotive low-voltage power supply structure comprises a power supply, a first connecting piece, a first power distribution module, a second power distribution module and a third power distribution module, and the power supply is arranged at the bottom of a cabin; the first connecting piece is connected with a power supply and is used for conducting electricity; the first power distribution module is connected with the first connecting piece, and the first power distribution module is used for supplying power to electrical elements for the rear cabin; the second power distribution module is connected with the first connecting piece, and the second power distribution module is used for supplying power to electrical elements for the cabin; and the third power distribution module is connected with the second power distribution module and is used for supplying power to the electrical elements for the forecabin. According to the low-voltage power source power supply structure, through cooperation of the power source, the first connecting piece and the first power distribution module, power can be supplied to the second power distribution module and the third power distribution module, meanwhile, the number and length of low-voltage wire harnesses can be reduced, and therefore the wire harness laying cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile power distribution technology, and in particular to a low-voltage power supply structure, a power supply system and an automobile for use in an automobile. Background Art

[0002] With the rapid development of the automotive industry, there are more and more electrical functions in the car, and the number of controllers, sensors, and actuators has increased exponentially, which has led to an increase in the number of low-voltage wiring harness branches, loops, and plug-ins, and the overall cost of the wiring harness system has also increased accordingly.

[0003] The power supply scheme in the related technology adopts a vehicle-use low-voltage power supply structure, and a wiring harness distribution box is set at the front and rear of the vehicle, so that all electrical parts can get power from the corresponding wiring harness distribution box at a closer position. The two wiring harness distribution boxes are connected by wires. However, due to the different positions of the electrical parts, the wiring harness will be entangled no matter where the wiring harness distribution box is placed, resulting in increased wiring harness laying costs. Summary of the invention

[0004] Based on this, it is necessary to provide a low-voltage power supply structure, power supply system and automobile for vehicles to address the problem that the low-voltage power supply structure for vehicles in the related technology leads to increased wiring harness laying costs.

[0005] In a first aspect, the present application provides a low-voltage power supply structure for a vehicle, which is applicable to a vehicle, wherein the vehicle includes a vehicle body, and the vehicle body includes a front cabin, a cockpit, and a rear cabin connected in sequence front and back. The low-voltage power supply structure for a vehicle includes:

[0006] A power source is provided at the bottom of the cockpit;

[0007] A first connecting member, connected to a power source, and used for conducting electricity;

[0008] A first power distribution module, connected to the first connecting member, the first power distribution module is used to supply power to the electrical components of the rear cabin;

[0009] A second power distribution module, connected to the first connecting member, the second power distribution module is used to supply power to the electrical components of the cockpit;

[0010] The third power distribution module is connected to the second power distribution module, and the third power distribution module is used to supply power to the electrical components in the front cabin.

[0011] In one embodiment, the first connecting member comprises:

[0012] A first three-way T-shaped connecting terminal, a first end of which is connected to a power source;

[0013] A first wire, one end of the first wire is connected between the second end of the first three-way T-shaped connecting terminal and the first power distribution module, and the other end of the first wire is connected between the third end of the first three-way T-shaped connecting terminal and the second power distribution module.

[0014] In one embodiment, the first power distribution module includes:

[0015] A first power distribution controller connected to the first wire via a second connecting member;

[0016] The DC converter is connected to the second connecting piece, and the DC converter cooperates with the first power distribution controller to supply power to the electrical components of the rear cabin.

[0017] In one embodiment, the second connecting member comprises:

[0018] a second three-way T-shaped connecting terminal, wherein a first end of the second three-way T-shaped connecting terminal is connected to the first power distribution controller, and a second end of the second three-way T-shaped connecting terminal is connected to the first wire;

[0019] The second wire is connected between the third end of the second three-way T-shaped connecting terminal and the DC converter.

[0020] In one embodiment, the second power distribution module includes:

[0021] A second power distribution controller connected to the second end of the first three-way T-shaped connection terminal;

[0022] The third power distribution controller is connected to the second power distribution controller via a third wire, and the third power distribution controller and the second power distribution controller are used to supply power to corresponding electrical components in the cockpit.

[0023] In one embodiment, the third power distribution module includes:

[0024] The front cabin power distribution box is connected to the second power distribution controller via a fourth wire, and the front cabin power distribution box is used to supply power to the electrical components in the front cabin.

[0025] In one of the embodiments, a receiving cavity is provided at the bottom of the cabin, and the first power distribution module, the second power distribution module and the power supply are all arranged in the receiving cavity.

[0026] In one embodiment, the power source includes a lithium battery.

[0027] In a second aspect, the present application provides a power supply system, including any one of the low-voltage power supply structures for vehicles provided in the first aspect, and the low-voltage power supply system for vehicles also includes:

[0028] An electrical component for the rear cabin, connected to the first power distribution module;

[0029] an electrical component for the cockpit, connected to the second power distribution module;

[0030] Electrical components for the front compartment, connected to the third power distribution module

[0031] In a third aspect, the present application provides a car, including the power supply system provided in the second aspect, the car also includes a car body, the car body includes a front cabin, a cockpit and a rear cabin connected in sequence, the front cabin electrical components and a third power distribution module are arranged in the front cabin, the cockpit electrical components and the second power distribution module are arranged in the cockpit, and the rear cabin electrical components and the first power distribution module are arranged in the rear cabin

[0032] The above-mentioned low-voltage power supply structure for vehicles is suitable for automobiles, and the automobile includes a vehicle body, and the vehicle body includes a front cabin, a cockpit and a rear cabin connected in sequence front and back. The low-voltage power supply structure for vehicles includes a power supply, a first connector, a first distribution module, a second distribution module and a third distribution module. The power supply is arranged at the bottom of the cockpit; the first connector is connected to the power supply, and the first connector is used for conduction; the first distribution module is connected to the first connector, and the first distribution module is used to supply power to the electrical components for the rear cabin; the second distribution module is connected to the first connector, and the second distribution module is used to supply power to the electrical components for the cockpit; the third distribution module is connected to the second distribution module, and the third distribution module is used to supply power to the electrical components for the front cabin. The low-voltage power supply structure in the present application, by arranging the power supply at the bottom of the cockpit and using the first connector, can allow the power supply to directly supply power to the first distribution module and the second distribution module, and supply power to the third distribution module through the second distribution module, thereby helping to reduce the number and length of low-voltage wiring harnesses, and thus reduce the wiring harness laying cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] FIG1 is a schematic diagram of the structure of a low-voltage power distribution system for a vehicle in the related art;

[0035] FIG2 is a schematic structural diagram showing the connection relationship between the vehicle low-voltage power supply structure and the vehicle body in some embodiments of the present application;

[0036] FIG3 is a schematic diagram of a low-voltage power supply structure for a vehicle in some embodiments of the present application.

[0037] Description of Figure Numbers:

[0038] 100. Low-voltage power distribution system for vehicle; 110. Battery; 120. Transfer distribution box; 200. Vehicle; 210. Vehicle body; 212. Front cabin; 214. Cockpit; 216. Rear cabin; 220. Power supply; 230. First three-way T-type connecting terminal; 240. First wire; 250. First power distribution module; 252. First power distribution controller; 254. DC converter; 256. Second three-way T-type connecting terminal; 258. Second wire; 260. Second power distribution module; 262. Second power distribution controller; 264. Third power distribution controller; 266. Third wire; 270. Third power distribution module; 272. Front cabin distribution box; 274. Fourth wire. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In this application, 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 connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] 1 , a low-voltage power distribution system 100 for a vehicle in the related art includes a battery 110, two transfer distribution boxes 120, etc., wherein the battery 110 is placed inside the luggage compartment. Since the battery 110 has no self-protection function, a distribution box for the battery 110, namely a transfer distribution box 120, is required to solve the risk of short circuit of the wiring harness. At the same time, one of the transfer distribution boxes 120 is arranged in the front cabin 212, and the other transfer distribution box 120 is arranged in the rear cabin 216 to supply power to various electrical appliances on the vehicle. As can be seen from FIG1 , the power supply network formed by the low-voltage power distribution system 100 for a vehicle in the related art is very complicated, and since most of the power harnesses are wires of more than 6 square meters, the weight cost of the overall power supply circuit of the harness accounts for a large proportion, and the wiring harness laying cost is high.

[0046] In order to solve the problem of increased wiring harness laying cost caused by the low-voltage power supply structure for vehicles in the related art, on the first hand, with reference to Figures 2 and 3, an embodiment of the present application provides a car 200, including a power supply system, which includes a low-voltage power supply structure for vehicles, and the car 200 also includes a car body 210, the car body 210 includes a front cabin 212, a cockpit 214 and a rear cabin 216 connected in sequence front and back, the electrical components for the front cabin and the third distribution module 270 are arranged in the front cabin 212, the electrical components for the cockpit and the second distribution module 260 are arranged in the cockpit 214, and the electrical components for the rear cabin and the first distribution module 250 are arranged in the rear cabin 216.

[0047] Specifically, since the wiring harness layout of the low-voltage power supply structure for the vehicle is streamlined, the wiring harness layout cost is low, so that the overall automobile 200 conforms to the lightweight design and helps to reduce the vehicle manufacturing cost of the automobile 200.

[0048] In the second aspect, referring to Figures 2 and 3, an embodiment of the present application provides the above-mentioned low-voltage power supply structure for a vehicle, which is applicable to the automobile 200 provided in the first aspect of the present application, and the low-voltage power supply structure for a vehicle includes a power supply 220, a first connecting member, a first distribution module 250, a second distribution module 260 and a third distribution module 270. The power supply 220 is arranged at the bottom of the cockpit 214; the first connecting member is connected to the power supply 220, and the first connecting member is used for conduction; the first distribution module 250 is connected to the first connecting member, and the first distribution module 250 is used to supply power to the electrical components for the rear cabin; the second distribution module 260 is connected to the first connecting member, and the second distribution module 260 is used to supply power to the electrical components for the cockpit; the third distribution module 270 is connected to the second distribution module 260, and the third distribution module 270 is used to supply power to the electrical components for the front cabin.

[0049] Among them, the front cabin 212 refers to the front area of ​​the car 200, including the engine compartment and the front suspension components. The electrical components used in the front cabin include motors, inverters, fans, electric power steering systems (EPS), intelligent battery controllers (IBC), etc. The cockpit 214 refers to the passenger seating area, including the driver's seat, the front passenger seat, the rear seats, the instrument panel, the central control console, etc. The electrical components used in the cockpit include air conditioning, audio, heating system (PTC), etc. The rear cabin 216 refers to the rear area of ​​the car 200, including the trunk or luggage compartment. The electrical components used in the rear cabin include rear lights, electric heating of the rear seats, etc.

[0050] Specifically, the power supply 220, the first power distribution module 250, the second power distribution module 260 and the third power distribution module 270 are connected by wires, and the size or material selection of the wires can be determined according to specific design requirements.

[0051] The power supply structure of the low-voltage power supply 220 in this embodiment, by setting the power supply 220 at the bottom of the cabin 214 and utilizing the first connecting piece, allows the power supply 220 to directly supply power to the first distribution module 250 and the second distribution module 260, and to supply power to the third distribution module 270 through the second distribution module 260, thereby helping to reduce the number and length of low-voltage wiring harnesses, and thereby reducing the wiring harness laying cost.

[0052] Referring to Figure 3, in some embodiments, the first connector includes a first three-way T-shaped connecting terminal 230 and a first wire 240, the first end of the first three-way T-shaped connecting terminal 230 is connected to the power supply 220; one end of the first wire 240 is connected between the second end of the first three-way T-shaped connecting terminal 230 and the first distribution module 250, and the other end of the first wire 240 is connected between the third end of the first three-way T-shaped connecting terminal 230 and the second distribution module 260.

[0053] Specifically, the first wire 240 in this embodiment has a cross-sectional area of ​​60 mm 2 The first three-way T-type connection terminal 230 is provided to realize the connection of multiple electrical components at one node, simplify the circuit layout, and help reduce the complexity of the circuit; it can also make more effective use of space, especially inside the narrow cabin of the car 200; in addition, it can also reduce the contact points, thereby reducing the potential risk of poor contact and improving the reliability of the electrical connection; in addition, it can also more evenly distribute the power of the power supply 220 to different electrical components, and improve the overall power supply 220 management efficiency of the system.

[0054] In this embodiment, by setting the first three-way T-shaped connecting terminal 230, the wiring harness distribution between the power supply 220, the second distribution module 260 and the first distribution module 250 is simplified, that is, the number and length of the wiring harness distribution are reduced, which helps to reduce the wiring harness laying cost.

[0055] 3 , in some embodiments, the first power distribution module 250 includes a first power distribution controller 252 and a DC converter 254. The first power distribution controller 252 is connected to the first wire 240 via a second connector. The DC converter 254 is connected to the second connector. The DC converter 254 cooperates with the first power distribution controller 252 to supply power to electrical components in the rear cabin.

[0056] Specifically, the first power distribution controller 252 is the PDC controller in FIG. 3 . The first power distribution controller 252 is used to distribute the power supply 220 from the main line to the electrical equipment located in the rear cabin 216 , and has a short-circuit protection function to ensure the safety of electricity use. The DC converter 254 is a DCDC controller, which is an electronic device used to manage the DC-DC converter 254 . Its main function is to control and adjust the conversion between different DC voltages to meet the power demand of electrical components. In addition, the DCDC controller integrates protection functions such as current protection, short-circuit protection, and over-temperature protection, which helps to reduce the setting of fuses in the low-voltage power supply structure for the vehicle, thereby making the design of the low-voltage power supply structure for the vehicle more streamlined and conducive to cost saving. The second connector is used to connect the DC converter 254 and the first power distribution controller 252 to the first wire 240 .

[0057] Referring to Figure 3, in some embodiments, the second connecting member includes a second three-way T-shaped connecting terminal 256 and a second wire 258, the first end of the second three-way T-shaped connecting terminal 256 is connected to the first power distribution controller 252, and the second end of the second three-way T-shaped connecting terminal 256 is connected to the first wire 240; the second wire 258 is connected between the third end of the second three-way T-shaped connecting terminal 256 and the DC converter 254.

[0058] Specifically, through the second three-way T-type connection terminal 256, multiple electrical components can be connected at the node, and the circuit layout is simplified, which helps to reduce the complexity of the circuit; it can also make more effective use of space, especially inside the narrow cabin of the car 200; in addition, it can also reduce the number of contact points, thereby reducing the potential risk of poor contact and improving the reliability of electrical connection; in addition, it can also more evenly distribute the power of the power supply 220 to different electrical components, thereby improving the overall power management efficiency of the system. The second wire 258 in this embodiment is a cross-sectional area of ​​35mm 2 Aluminum conductors.

[0059] In this embodiment, by setting up the second three-way T-shaped connecting terminal 256, the wiring harness distribution between the first conductor 240, the first power distribution controller 252, and the DC converter 254 is simplified, that is, the number and length of the wiring harness distribution are reduced, which helps to reduce the wiring harness laying cost.

[0060] 3 , in some embodiments, the second power distribution module 260 includes a second power distribution controller 262 and a third power distribution controller 264. The second power distribution controller 262 is connected to the second end of the first three-way T-type connection terminal 230. The third power distribution controller 264 is connected to the second power distribution controller 262 via a third wire 266. The third power distribution controller 264 and the second power distribution controller 262 are used to supply power to corresponding electrical components of the cabin.

[0061] Specifically, the third wire 266 has a cross-sectional area of ​​10 mm 2 The second power distribution controller 262 is PDC-left in FIG3 , and the second power distribution controller 262 is used to distribute the power 220 from the main line to the power equipment on the left; the third power distribution controller 264 is PDC-right in FIG3 , and the third power distribution controller 264 is used to distribute the power 220 from the main line to the power equipment on the right, and both the second power distribution controller 262 and the third power distribution controller 264 have a short-circuit protection function to ensure power safety.

[0062] In this embodiment, by arranging the second power distribution controller 262 and the third power distribution controller 264 on the left and right sides of the cockpit 214 respectively, each electrical component in the cockpit 214 can select the corresponding power distribution controller nearby, which helps to further reduce the length of the wire harness distribution and reduce the complexity of the layout, thereby facilitating the reduction of the wire harness layout cost and facilitating subsequent inspection and maintenance by workers.

[0063] 3 , in some embodiments, the third power distribution module 270 includes a front cabin power distribution box 272 , which is connected to the second power distribution controller 262 via a fourth wire 274 , and the front cabin power distribution box 272 is used to supply power to electrical components in the front cabin.

[0064] Specifically, the fourth wire 274 in this embodiment has a cross-sectional area of ​​25 mm 2 Aluminum wires. Concentrating the power supply of the electrical components in the front cabin in the front cabin distribution box 272 can simplify the wiring and facilitate future inspection and maintenance. In addition, since the electrical components of the front cabin 212 may be added later, the front cabin distribution box 272 is also set to facilitate subsequent expansion and add more electrical components, so that there is no need to make complex changes to the entire power supply 220 system. In addition, since the requirements for the electrical components in the front cabin are different from those for the electrical components in the cockpit 214 and the rear cabin 216, the use of a dedicated front cabin distribution box 272 to handle the special requirements of the electrical components in the front cabin can flexibly respond to different power usage scenarios.

[0065] In this embodiment, the fourth wire 274 and the second power distribution controller 262 cooperate to distribute electrical energy to the front cabin power distribution box 272, which can further simplify the layout of the wiring harness, thereby helping to save the wiring harness laying cost.

[0066] 2 , in some embodiments, a receiving cavity is provided at the bottom of the cabin 214 , and the first power distribution module 250 , the second power distribution module 260 , and the power source 220 are all disposed in the receiving cavity.

[0067] Specifically, the first power distribution module 250, the second power distribution module 260 and the power supply 220 are all arranged in the accommodating cavity, which can provide good anti-collision protection for the power supply 220 trunk composed of the power supply 220, the first power distribution module 250 and the second power distribution module 260, thereby ensuring the service life and performance of the vehicle low-voltage power supply structure.

[0068] 2 and 3 , in some embodiments, the power source 220 includes a lithium battery.

[0069] Specifically, since lithium batteries have a higher energy density than other types of batteries (such as lead-acid batteries), this means that at the same weight and volume, lithium batteries can store more electrical energy, thereby providing the device with a longer usage time or higher power output; and lithium batteries have a longer service life than other types of batteries; in addition, since lithium batteries are lighter than other types of batteries of the same capacity, they are more suitable for applications that require lightweight design, such as the overall weight reduction design of the automobile 200, so the power supply 220 in this embodiment takes a lithium battery as an example.

[0070] The vehicle low-voltage power supply structure in the present application cooperates with the first three-way T-shaped connecting terminal 230, the first wire 240, the first power distribution controller 252, the second three-way T-shaped connecting terminal 256, the second wire 258, the third wire 266, the second power distribution controller 262, the third power distribution controller 264 and the front cabin distribution box 272. The electrical components located in the front cabin 212, the cockpit 214 and the rear cabin 216 of the automobile 200 can select the corresponding power distribution controller nearby, thereby helping to reduce the length and number of wiring harness distribution, reduce the complexity of wiring, and thus facilitate reducing the wiring harness wiring cost, and facilitate subsequent inspection and maintenance by workers.

[0071] In the third aspect, an embodiment of the present application provides a power supply system as mentioned above, which is applicable to a car 200 provided in the first aspect of the present application, and the power supply system includes any one of the low-voltage power supply structures for vehicles provided in the second aspect, and the power supply system also includes electrical components for the rear cabin, electrical components for the cockpit, and electrical components for the front cabin, the electrical components for the rear cabin are connected to the first distribution module 250; the electrical components for the cockpit are connected to the second distribution module 260; the electrical components for the front cabin are connected to the third distribution module 270.

[0072] Specifically, as described above, the electrical components for the rear cabin, the electrical components for the cockpit, and the electrical components for the front cabin can be connected to the corresponding distribution modules nearby, which helps to reduce the length and number of wiring harnesses, reduces the complexity of wiring, and further helps to reduce the cost of wiring harnesses, and helps to facilitate subsequent inspection and maintenance by workers.

[0073] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A low-voltage power supply structure for a vehicle, suitable for a car, wherein the car comprises a car body, wherein the car body comprises a front cabin, a cockpit and a rear cabin connected in sequence front and back, characterized in that: The vehicle low-voltage power supply structure comprises: A power source is arranged at the bottom of the cockpit; A first connecting member connected to the power source, the first connecting member is used for conducting electricity; a first power distribution module, connected to the first connecting member, the first power distribution module being used to supply power to electrical components for the rear cabin; a second power distribution module, connected to the first connecting member, the second power distribution module being used to supply power to the electrical components of the cockpit; The third power distribution module is connected to the second power distribution module, and the third power distribution module is used to supply power to the electrical components in the front cabin.

2. The low-voltage power supply structure for a vehicle according to claim 1, characterized in that: The first connecting member comprises: a first three-way T-shaped connecting terminal, wherein a first end of the first three-way T-shaped connecting terminal is connected to the power source; A first wire, one end of which is connected between the second end of the first three-way T-shaped connecting terminal and the first power distribution module, and the other end of which is connected between the third end of the first three-way T-shaped connecting terminal and the second power distribution module.

3. The low-voltage power supply structure for a vehicle according to claim 2, characterized in that: The first power distribution module comprises: A first power distribution controller connected to the first wire via a second connecting member; A DC converter is connected to the second connecting piece, and the DC converter cooperates with the first power distribution controller to supply power to the electrical components of the rear cabin.

4. The low-voltage power supply structure for a vehicle according to claim 3, characterized in that: The second connecting member comprises: a second three-way T-shaped connecting terminal, wherein a first end of the second three-way T-shaped connecting terminal is connected to the first power distribution controller, and a second end of the second three-way T-shaped connecting terminal is connected to the first wire; The second wire is connected between the third end of the second three-way T-shaped connecting terminal and the DC converter.

5. The low-voltage power supply structure for a vehicle according to claim 2, characterized in that: The second power distribution module comprises: a second power distribution controller connected to the second end of the first three-way T-shaped connection terminal; The third power distribution controller is connected to the second power distribution controller via a third wire, and the third power distribution controller and the second power distribution controller are used to supply power to the corresponding electrical components of the cockpit.

6. The low-voltage power supply structure for a vehicle according to claim 5, characterized in that: The third power distribution module comprises: The front cabin power distribution box is connected to the second power distribution controller via a fourth wire, and the front cabin power distribution box is used to supply power to the electrical components in the front cabin.

7. The low-voltage power supply structure for a vehicle according to claim 5, characterized in that: A receiving cavity is provided at the bottom of the cabin, and the first power distribution module, the second power distribution module and the power supply are all arranged in the receiving cavity.

8. The low-voltage power supply structure for a vehicle according to claim 1, characterized in that: The power source includes a lithium battery.

9. A power supply system, characterized in that: The vehicle low-voltage power supply structure according to any one of claims 1 to 8, wherein the vehicle low-voltage power supply system further comprises: An electrical component for the rear cabin, connected to the first power distribution module; an electrical component for the cockpit, connected to the second power distribution module; The electrical components for the front cabin are connected to the third power distribution module.

10. An automobile, characterized in that: The power supply system comprises the power supply system as claimed in claim 9, wherein the automobile further comprises an automobile body, the automobile body comprises a front cabin, a cockpit and a rear cabin connected in sequence front and rear, the electrical components for the front cabin and the third power distribution module are arranged in the front cabin, the electrical components for the cockpit and the second power distribution module are arranged in the cockpit, and the electrical components for the rear cabin and the first power distribution module are arranged in the rear cabin.

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