An electronic and electrical system for a vehicle

Abstract

The application discloses a kind of electronic and electrical systems for vehicle, it is related to new energy automobile technical field, including vehicle-mounted power battery, vehicle-mounted battery, first power distribution module and second power distribution module.First power distribution module includes first high-voltage power distribution unit and first low-voltage power distribution unit, first high-voltage power distribution unit and first low-voltage power distribution unit are sequentially connected in the loop between vehicle-mounted power battery and vehicle-mounted electrical equipment;Second power distribution module includes second high-voltage power distribution unit and second low-voltage power distribution unit, second high-voltage power distribution unit and second low-voltage power distribution unit are sequentially connected in the loop between vehicle-mounted power battery and vehicle-mounted electrical equipment, and second low-voltage power distribution unit is also connected in the loop between vehicle-mounted battery and vehicle-mounted electrical equipment.The application can ensure normal operation of vehicle when single point failure in the loop between vehicle-mounted power battery and vehicle-mounted electrical equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a vehicle electronic and electrical system. BACKGROUND

[0002] With the development of electrification and intelligence of vehicles, the electronic and electrical system of the vehicle is becoming increasingly complex. As a leader in the application of high-level automatic driving in specific fields, commercial vehicles have put forward higher safety requirements for the design of electronic and electrical systems. In order to improve the reliability of the system and reduce the failure rate, it is imperative to design a redundant electronic and electrical system.

[0003] In the prior art, a communication redundant electronic and electrical system is often used, two communication links are designed for the vehicle data center, the automatic driving data center and the cockpit data center and linked to the vehicle integrated unit, and the vehicle integrated units are interconnected through a ring network. However, the power redundancy is not considered, and in the case of single power failure of the vehicle, all redundant designs are invalid, and the communication redundancy cannot guarantee the function of the vehicle. The design of a safety redundant electronic and electrical system needs to solve the problem of single point failure from the root, and the communication redundancy design independent of power redundancy is invalid. SUMMARY

[0004] The present application provides a vehicle electronic and electrical system, the first power distribution module and the second power distribution module can ensure the normal operation of the vehicle when there is a single point failure in the loop between the vehicle power battery and the vehicle electrical equipment.

[0005] According to one aspect of the present application, a vehicle electronic and electrical system is provided, comprising:

[0006] a vehicle power battery and a vehicle storage battery, the vehicle power battery is used to provide a first voltage, the vehicle storage battery is used to provide a second voltage, the first voltage is greater than the second voltage;

[0007] a first power distribution module, comprising a first high-voltage power distribution unit and a first low-voltage power distribution unit; the first high-voltage power distribution unit and the first low-voltage power distribution unit are sequentially connected in series in a loop between the vehicle power battery and the vehicle electrical equipment;

[0008] the second power distribution module, comprising a second high-voltage power distribution unit and a second low-voltage power distribution unit; the second high-voltage power distribution unit and the second low-voltage power distribution unit are sequentially connected in series in a loop between the vehicle power battery and the vehicle electrical equipment, and the second low-voltage power distribution unit is also connected in series in a loop between the vehicle storage battery and the vehicle electrical equipment.

[0009] Optionally, the second high-voltage power distribution unit is electrically connected with the vehicle power battery.

[0010] The first high-voltage power distribution unit is electrically connected with the second high-voltage power distribution unit and the first low-voltage power distribution unit respectively.

[0011] Optionally, the first high-voltage power distribution unit comprises a first control subunit and a first switch subunit; the first control subunit is used at least for controlling the first switch subunit to be turned on when the vehicle is powered on.

[0012] The first low-voltage power distribution unit comprises a second control subunit and a second switch subunit; the second control subunit is used at least for controlling the second switch subunit to be turned on when the vehicle is powered on.

[0013] The second high-voltage power distribution unit comprises a third control subunit and a third switch subunit; the third control subunit is used at least for controlling the third switch subunit to be turned on when the vehicle is powered on.

[0014] The second low-voltage power distribution unit comprises a fourth control subunit and a fourth switch subunit; the fourth control subunit is used for controlling the fourth switch subunit to be turned off when the vehicle is powered on, and for controlling the fourth switch subunit to be turned on when the vehicle-mounted power battery fails.

[0015] Optionally, the first control subunit is further used for controlling the first switch subunit to be turned off when the vehicle-mounted power battery fails.

[0016] The second control subunit is further used for controlling the second switch subunit to be turned off when the vehicle-mounted power battery fails.

[0017] The third control subunit is further used for controlling the third switch subunit to be turned off when the vehicle-mounted power battery fails.

[0018] Optionally, the vehicle electronic and electrical system further comprises a plurality of programmable control fuse units, the programmable control fuse units correspond to the vehicle-mounted electrical equipment one by one.

[0019] The programmable control fuse unit is arranged in series in a loop between a low-voltage power distribution unit and the vehicle-mounted electrical equipment, and the programmable control fuse unit is in communication connection with the low-voltage power distribution unit, the low-voltage power distribution unit is used for controlling the turn-on state of the programmable control fuse unit; the low-voltage power distribution unit comprises the first low-voltage power distribution unit and the second low-voltage power distribution unit.

[0020] Optionally, the first power distribution module further comprises a first voltage conversion unit, the first voltage conversion unit is arranged in series in a loop between the first high-voltage power distribution unit and the first low-voltage power distribution unit; the second power distribution module further comprises a second voltage conversion unit, the second voltage conversion unit is arranged in series in a loop between the second high-voltage power distribution unit and the second low-voltage power distribution unit.

[0021] Optionally, the first high-voltage power distribution unit and the second high-voltage power distribution unit are of the same structure.

[0022] The first low-voltage power distribution unit and the second low-voltage power distribution unit are of the same structure.

[0023] Optionally, the first high-voltage power distribution unit is located in a vehicle chassis, and the second high-voltage power distribution unit is located in a vehicle cab.

[0024] Optionally, the vehicle electrical equipment comprises a central control unit and a regional control unit.

[0025] The central control unit is in communication connection with the regional control units respectively, and any two regional control units are in communication connection.

[0026] Optionally, the central control unit is in communication connection with the regional control units through a gigabit Ethernet, and any two regional control units are in communication connection through a CAN FD.

[0027] The embodiment of the present application provides a vehicle electronic and electrical system, which comprises a vehicle power battery, a vehicle storage battery, a first power distribution module and a second power distribution module. The first power distribution module comprises a first high-voltage power distribution unit and a first low-voltage power distribution unit, and the first high-voltage power distribution unit and the first low-voltage power distribution unit are arranged in series in a loop between the vehicle power battery and vehicle electrical equipment in turn. The second power distribution module comprises a second high-voltage power distribution unit and a second low-voltage power distribution unit, and the second high-voltage power distribution unit and the second low-voltage power distribution unit are arranged in series in a loop between the vehicle power battery and vehicle electrical equipment in turn, and the second low-voltage power distribution unit is also arranged in series in a loop between the vehicle storage battery and vehicle electrical equipment. The first power distribution module and the second power distribution module of the present application can ensure the normal operation of the vehicle when a single point fault occurs in the loop between the vehicle power battery and vehicle electrical equipment.

[0028] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0030] Figure 1 A structural schematic diagram of an electronic and electrical system for vehicle is provided for the embodiments of the present application.

[0031] Figure 2 Another structural schematic diagram of an electronic and electrical system for vehicle is provided for the embodiments of the present application.

[0032] Figure 3 A structural schematic diagram of an electronic and electrical system for vehicle is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0033] In order to make the person skilled in the art better understand the present application, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to include those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] Figure 1 A structural schematic diagram of an electronic and electrical system for vehicle is provided for the embodiments of the present application, referring to Figure 1 The electronic and electrical system for vehicle includes an on-board power battery 130, an on-board storage battery 140, a first power distribution module 110 and a second power distribution module 120.

[0036] The vehicle-mounted power battery 130 is configured to provide a first voltage, and the vehicle-mounted storage battery 140 is configured to provide a second voltage, wherein the first voltage is greater than the second voltage.

[0037] For example, the first voltage provided by the vehicle-mounted power battery 130 can be 400V, and the second voltage provided by the vehicle-mounted storage battery 140 can be 24V.

[0038] With reference to the foregoing description, Figure 1 The first power distribution module 110 includes a first high-voltage power distribution unit 111 and a first low-voltage power distribution unit 112, and the first high-voltage power distribution unit 111 and the first low-voltage power distribution unit 112 are arranged in series in a loop between the vehicle-mounted power battery 130 and the vehicle-mounted electrical equipment 150. The second power distribution module 120 includes a second high-voltage power distribution unit 121 and a second low-voltage power distribution unit 122, and the second high-voltage power distribution unit 121 and the second low-voltage power distribution unit 122 are arranged in series in a loop between the vehicle-mounted power battery 130 and the vehicle-mounted electrical equipment 150, and the second low-voltage power distribution unit 122 is also arranged in series in a loop between the vehicle-mounted storage battery 140 and the vehicle-mounted electrical equipment 150.

[0039] It can be understood that the vehicle electronic and electrical system of the embodiment of the present application is configured with two power supply sources, one of which is from the vehicle-mounted power battery 130. When the vehicle is in normal use without failure, the power supply of the vehicle-mounted electrical equipment 150 is provided by the vehicle-mounted power battery 130. When the vehicle-mounted power battery 130 fails, or both the first power distribution module 110 and the second high-voltage power distribution unit 121 fail, the power supply of the vehicle-mounted electrical equipment 150 is provided by the vehicle-mounted storage battery 140. In addition, the vehicle electronic and electrical system of the embodiment of the present application is configured with two power supply lines. When the first power distribution module 110 fails, the vehicle-mounted power battery 130 can supply power through the second power distribution module 120, and when the second power distribution module 120 fails, the vehicle-mounted power battery 130 can supply power through the second power distribution module 120.

[0040] The embodiment of the present application provides a kind of electronic and electrical system for vehicle, including vehicle-mounted power battery 130, vehicle-mounted battery 140, first power distribution module 110 and second power distribution module 120.The first power distribution module 110 includes first high-voltage power distribution unit 111 and first low-voltage power distribution unit 112, and first high-voltage power distribution unit 111 and first low-voltage power distribution unit 112 are sequentially connected in series in the loop between vehicle-mounted power battery 130 and vehicle-mounted electrical equipment 150;Second power distribution module 120 includes second high-voltage power distribution unit 121 and second low-voltage power distribution unit 122, and second high-voltage power distribution unit 121 and second low-voltage power distribution unit 122 are sequentially connected in series in the loop between vehicle-mounted power battery 130 and vehicle-mounted electrical equipment 150, and second low-voltage power distribution unit 122 is also connected in series in the loop between vehicle-mounted battery 140 and vehicle-mounted electrical equipment 150.The first power distribution module 110 and the second power distribution module 120 of the present application can ensure normal operation of vehicle when single point failure occurs in the loop between vehicle-mounted power battery 130 and vehicle-mounted electrical equipment 150.

[0041] Optionally, on the basis of the above embodiment, continue to refer to Figure 1 Second high-voltage power distribution unit 121 is electrically connected with vehicle-mounted power battery 130.First high-voltage power distribution unit 111 is electrically connected with second high-voltage power distribution unit 121 and first low-voltage power distribution unit 112 respectively.

[0042] Second high-voltage power distribution unit 121 is electrically connected with vehicle-mounted power battery 130, and first high-voltage power distribution unit 111 is electrically connected with second high-voltage power distribution unit 121 instead of being directly electrically connected with vehicle-mounted power battery 130, so that vehicle-mounted power battery 130 can realize the electrical connection relationship between first high-voltage power distribution unit 111 and second high-voltage power distribution unit 121 by only setting one output port, and the port setting mode of vehicle-mounted power battery 130 is simple.

[0043] It can be understood that second high-voltage power distribution unit 121 is electrically connected with vehicle-mounted power battery 130 for distributing the voltage provided by vehicle-mounted power battery 130.First high-voltage power distribution unit 111 is electrically connected with second high-voltage power distribution unit 121 and first low-voltage power distribution unit 112 respectively for distributing the voltage distributed by second high-voltage power distribution unit 121 to first low-voltage power distribution unit 112.

[0044] In the embodiment of the present application, two high-voltage power distribution units are arranged, the second high-voltage power distribution unit 121 is electrically connected with the vehicle-mounted power battery 130, the first high-voltage power distribution unit 111 is electrically connected with the second high-voltage power distribution unit 121 and the first low-voltage power distribution unit 112 respectively, which can play a role of shunting, and can ensure the normal operation of the vehicle when the single-point fault occurs in the loop between the vehicle-mounted power battery 130 and the vehicle-mounted electrical equipment 150.

[0045] Figure 2 Another structure schematic diagram of the vehicle-used electronic and electrical system provided by the embodiment of the present application is provided, and the optional structure schematic diagram of the vehicle-used electronic and electrical system is shown in FIG. 2. Figure 2 On the basis of the above embodiment, the first high-voltage power distribution unit 111 includes a first control sub-unit 1111 and a first switch sub-unit 1112, the first low-voltage power distribution unit 112 includes a second control sub-unit 1121 and a second switch sub-unit 1122, the second high-voltage power distribution unit 121 includes a third control sub-unit 1211 and a third switch sub-unit 1212, and the second low-voltage power distribution unit 122 includes a fourth control sub-unit 1221 and a fourth switch sub-unit 1222.

[0046] For example, the first control sub-unit 1111, the second control sub-unit 1121, the third control sub-unit 1211 and the fourth control sub-unit 1221 can all include a controller, and the first switch sub-unit 1112, the second switch sub-unit 1122, the third switch sub-unit and the fourth switch sub-unit 1222 can all include a MOS tube, and the controller can output different control signals to control the conduction and the turn-off of the MOS tube.

[0047] The first control sub-unit 1111 is used for controlling the first switch sub-unit 1112 to be turned on when the vehicle is powered on, the second control sub-unit 1121 is used for controlling the second switch sub-unit 1122 to be turned on when the vehicle is powered on, the third control sub-unit 1211 is used for controlling the third switch sub-unit 1212 to be turned on when the vehicle is powered on, and the fourth control sub-unit 1221 is used for controlling the fourth switch sub-unit 1222 to be turned off when the vehicle is powered on and to be turned on when the vehicle-mounted power battery 130 fails. Thus, when the vehicle is normally powered on, the power supply signal provided by the vehicle-mounted power battery 130 can be transmitted to the vehicle-mounted electrical equipment 150 through the third switch sub-unit 1212, the first switch sub-unit 1112 and the second switch sub-unit 1122 which are turned on in sequence, so as to ensure that the vehicle-mounted electrical equipment 150 normally receives the power supply signal and normally works. At this time, the fourth control sub-unit 1221 controls the fourth switch sub-unit 1222 to be turned off, so that the vehicle storage battery 140 does not output the power supply signal or the power supply signal provided by the vehicle storage battery 140 cannot be transmitted to the vehicle-mounted electrical equipment 150 through the turned-off fourth switch sub-unit 1222, so as to ensure that the vehicle-mounted electrical equipment 150 will not be damaged due to receiving multiple power supply signals.

[0048] Further, the fourth control sub-unit 1221 is also used for controlling the fourth switch sub-unit 1222 to be turned on when the vehicle-mounted power battery 130 fails, so that the power supply signal provided by the vehicle storage battery 140 is transmitted to the vehicle-mounted electrical equipment 150 through the turned-on fourth switch sub-unit 1222, so as to ensure that the vehicle-mounted electrical equipment 150 normally receives the power supply signal and normally works.

[0049] In the embodiment of the application, the first control sub-unit 1111 is used for controlling the first switch sub-unit 1112 to be turned on when the vehicle is powered on, the second control sub-unit 1121 is used for controlling the second switch sub-unit 1122 to be turned on when the vehicle is powered on, the third control sub-unit 1211 is used for controlling the third switch sub-unit 1212 to be turned on when the vehicle is powered on, and the fourth control sub-unit 1221 is used for controlling the fourth switch sub-unit 1222 to be turned off when the vehicle is powered on and to be turned on when the vehicle-mounted power battery 130 fails. Thus, when the vehicle-mounted power battery 130 normally works, the vehicle-mounted electrical equipment 150 can be powered by the vehicle-mounted power battery 130, so as to ensure that the vehicle normally runs. When the vehicle-mounted power battery 130 fails, the vehicle-mounted electrical equipment 150 can be powered by the vehicle storage battery 140, so as to realize seamless switching of dual power supply and ensure that the vehicle normally runs.

[0050] Optionally, based on the above-mentioned embodiments, the first control subunit 1111 is further configured to control the first switch subunit 1112 to be closed when the vehicle-mounted power battery fails, the second control subunit 1121 is further configured to control the second switch subunit 1122 to be closed when the vehicle-mounted power battery 130 fails, and the third control subunit 1211 is further configured to control the third switch subunit 1212 to be closed when the vehicle-mounted power battery 130 fails.

[0051] For example, the controller of the first control subunit 1111 is further configured to control the MOS tube of the first switch subunit 1112 to be closed when the vehicle-mounted power battery fails, the controller of the second control subunit 1121 is further configured to control the MOS tube of the second switch subunit 1122 to be closed when the vehicle-mounted power battery 130 fails, and the controller of the third control subunit 1211 is further configured to control the MOS tube of the third switch subunit 1212 to be closed when the vehicle-mounted power battery 130 fails. In this way, the function of fault isolation can be achieved, the vehicle-mounted power battery that fails is isolated from the vehicle electrical equipment, the spread of the fault is prevented, the system stability is improved, and the normal operation of the vehicle is ensured.

[0052] Optionally, based on the above-mentioned embodiments, the vehicle electronic and electrical system further comprises a plurality of programmable control fuse units 160, and the programmable control fuse units 160 correspond to the vehicle electrical equipment 150 one by one. Figure 2 The programmable control fuse unit 160 is arranged in series in a loop between the low-voltage power distribution unit and the vehicle electrical equipment 150, and the programmable control fuse unit 160 is in communication connection with the low-voltage power distribution unit. The low-voltage power distribution unit is configured to control the conduction state of the programmable control fuse unit 160. The low-voltage power distribution unit comprises a first low-voltage power distribution unit 112 and a second low-voltage power distribution unit 122.

[0053] The second control subunit 1121 in the first low-voltage power distribution unit 112 and the fourth control subunit 1221 in the second low-voltage power distribution unit 122 are further configured to control the conduction state of the programmable control fuse unit 160.

[0054] For example, when the vehicle electrical equipment 150 connected to the programmable control fuse unit 160 fails, the controller of the second control subunit 1121 and the controller of the fourth control subunit 1221 control the programmable control fuse unit 160 to cut off the power supply line of the corresponding vehicle electrical equipment 150, avoid the spread of the fault, and thus play the role of fault isolation.

[0055] Optionally, the first power distribution module 110 further comprises a first voltage conversion unit 113, which is arranged in series in a loop between the first high-voltage power distribution unit 111 and the first low-voltage power distribution unit 112; the second power distribution module 120 further comprises a second voltage conversion unit 123, which is arranged in series in a loop between the second high-voltage power distribution unit 121 and the second low-voltage power distribution unit 122.

[0056] In the embodiment of the present application, the first voltage conversion unit 113 and the second voltage conversion unit 123 can convert high-voltage power into low-voltage power for the vehicle electrical equipment 150, so as to ensure that the vehicle electrical equipment 150 normally receives power signals and normally works.

[0057] Optionally, on the basis of the above-mentioned embodiment, the first high-voltage power distribution unit 111 and the second high-voltage power distribution unit 121 are of the same structure. The first low-voltage power distribution unit 112 and the second low-voltage power distribution unit 122 are of the same structure.

[0058] In the embodiment of the present application, the first high-voltage power distribution unit 111 and the second high-voltage power distribution unit 121 are of the same structure, and the first low-voltage power distribution unit 112 and the second low-voltage power distribution unit 122 are of the same structure, which can reduce the difficulty of equipment selection.

[0059] Optionally, on the basis of the above-mentioned embodiment, the first high-voltage power distribution unit 111 is located in the vehicle chassis, and the second high-voltage power distribution unit 121 is located in the vehicle cab.

[0060] In the embodiment of the present application, the first high-voltage power distribution unit 111 is located in the vehicle chassis, and the second high-voltage power distribution unit 121 is located in the vehicle cab, which can save the length of the wire harness and reduce the probability of failure.

[0061] Figure 3 A structure schematic diagram of a vehicle electrical equipment provided in the embodiment of the present application is provided, and optionally, on the basis of the above-mentioned embodiment, referring to Figure 3 The vehicle electrical equipment 150 comprises a central control unit 151 and a regional control unit 152. The central control unit 151 is in communication connection with the regional control unit 152, and any two regional control units 152 are in communication connection.

[0062] Illustratively, the vehicle electrical equipment 150 can comprise three regional control units 152, and the central control unit 151 is in communication connection with the regional control unit 152 through three communication links.

[0063] The central control unit 151 and the regional control unit 152 are respectively connected with corresponding sensors and actuators.

[0064] The central control unit 151 of the embodiment of the application is respectively connected in communication with the regional control units 152, and any two regional control units 152 are connected in communication, so that when any one or two links are interrupted, the communication function of the whole vehicle is not affected. When all the communication links are interrupted, the communication can still be completed through the central control unit 151, and the normal use of the function of the whole vehicle is ensured.

[0065] Optionally, on the basis of the above embodiment, the central control unit 151 is connected in communication with the regional control units 152 through a gigabit Ethernet, and any two regional control units 152 are connected in communication through a CAN FD.

[0066] The central control unit 151 integrates automatic driving, intelligent cockpit and whole vehicle control function modules, is responsible for calculation and implementation of whole vehicle function logic. The regional control unit 152 is responsible for information and power management of devices in the region.

[0067] In the embodiment of the application, the central control unit 151 is connected in communication with the regional control units 152 through a gigabit Ethernet, and any two regional control units 152 are connected in communication through a CAN FD, so that the whole vehicle function in the case of communication link failure can be ensured, and the robustness of network communication is improved by designing different communication types.

[0068] The above specific embodiments do not constitute a limitation on the protection scope of the application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. A vehicle electronic and electrical system, characterized in that, include: The vehicle-mounted power battery and the vehicle-mounted storage battery, wherein the vehicle-mounted power battery is used to provide a first voltage and the vehicle-mounted storage battery is used to provide a second voltage, wherein the first voltage is greater than the second voltage; The first power distribution module includes a first high-voltage power distribution unit and a first low-voltage power distribution unit; the first high-voltage power distribution unit and the first low-voltage power distribution unit are connected in series in the circuit between the vehicle power battery and the vehicle electrical equipment. The second power distribution module includes a second high-voltage power distribution unit and a second low-voltage power distribution unit; the second high-voltage power distribution unit and the second low-voltage power distribution unit are connected in series in the circuit between the vehicle power battery and the vehicle electrical equipment, and the second low-voltage power distribution unit is also connected in series in the circuit between the vehicle battery and the vehicle electrical equipment. The first power distribution module and the second power distribution module ensure normal vehicle operation in the event of a single point failure in the circuit between the vehicle power battery and the vehicle electrical equipment. The vehicle electronic and electrical system also includes multiple programmable control fuse units, each corresponding to one of the vehicle-mounted electrical devices. The programmable control fuse unit is connected in series in the circuit between the low-voltage power distribution unit and the vehicle-mounted electrical equipment, and the programmable control fuse unit is communicatively connected to the low-voltage power distribution unit. The low-voltage power distribution unit is used to control the conduction state of the programmable control fuse unit. The low-voltage power distribution unit includes a first low-voltage power distribution unit and a second low-voltage power distribution unit.

2. The automotive electronic and electrical system according to claim 1, characterized in that, The second high-voltage power distribution unit is electrically connected to the vehicle-mounted power battery; The first high-voltage power distribution unit is electrically connected to the second high-voltage power distribution unit and the first low-voltage power distribution unit, respectively.

3. The automotive electronic and electrical system according to claim 2, characterized in that, The first high-voltage power distribution unit includes a first control subunit and a first switch subunit; the first control subunit is used at least to control the first switch subunit to conduct when the vehicle is powered on; The first low-voltage power distribution unit includes a second control subunit and a second switch subunit; the second control subunit is used at least to control the second switch subunit to be turned on when the vehicle is powered on; The second high-voltage power distribution unit includes a third control subunit and a third switch subunit; the third control subunit is used at least to control the third switch subunit to be turned on when the vehicle is powered on; The second low-voltage power distribution unit includes a fourth control subunit and a fourth switch subunit; the fourth control subunit is used to control the fourth switch subunit to close when the vehicle is powered on, and to control the fourth switch subunit to open when the on-board power battery fails.

4. The automotive electronic and electrical system according to claim 3, characterized in that, The first control subunit is also configured to control the first switch subunit to shut down when the on-board power battery fails; The second control subunit is also used to control the second switch subunit to close when the on-board power battery fails; The third control subunit is also used to control the third switch subunit to shut down when the on-board power battery fails.

5. The automotive electronic and electrical system according to claim 1, characterized in that, The first power distribution module further includes a first voltage conversion unit, which is connected in series in the loop between the first high-voltage power distribution unit and the first low-voltage power distribution unit; the second power distribution module further includes a second voltage conversion unit, which is connected in series in the loop between the second high-voltage power distribution unit and the second low-voltage power distribution unit.

6. The electronic and electrical system according to claim 1, characterized in that, The first high-voltage power distribution unit and the second high-voltage power distribution unit have the same structure; The first low-voltage power distribution unit and the second low-voltage power distribution unit have the same structure.

7. The automotive electronic and electrical system according to claim 1, characterized in that, The first high-voltage power distribution unit is located in the vehicle chassis, and the second high-voltage power distribution unit is located in the vehicle cab.

8. The automotive electronic and electrical system according to claim 1, characterized in that, The vehicle-mounted electrical equipment includes a central control unit and regional control units; The central control unit is communicatively connected to each of the regional control units, and any two of the regional control units are communicatively connected.

9. The automotive electronic and electrical system according to claim 8, characterized in that, The central control unit communicates with the regional control units via gigabit Ethernet, and any two regional control units are connected via CAN FD communication.

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