Vehicles and their electrical systems

Abstract

The present invention provides a vehicle and its power system. The power system of the vehicle includes a first fuse box, in which a plurality of first fuses are arranged, and the plurality of first fuses are arranged to be electrically connected to at least two of the vehicle's headlights, rear lights, door lock modules, wiper modules, steering systems, brake systems, vehicle gateway modules, central controllers, collision controllers, and battery management systems in a one-to-one correspondence. The power system integrates the fuses of functional devices of concern after a collision and places them centrally in the first fuse box, and these functional devices of concern after a collision use separate first fuses respectively, so that the safety level of the vehicle is higher.

Description

Technical Field

[0001] The present invention relates to, but is not limited to, the field of vehicle technology, and in particular to, but is not limited to, a vehicle power system and a vehicle. Background Art

[0002] The safety performance of automobile collisions has received extensive attention. Automobile collisions are usually divided into frontal / side / rear collisions, rollovers, and pedestrian collisions. After a collision occurs, certain functions of the vehicle must be available to help rescuers rescue injured people and identify and find vehicles in advance after the accident.

[0003] At present, the national mandatory standards focus mainly on the doors in terms of post-collision functions. Under standard frontal and side collision conditions, the national standards require that the doors can be opened, but there are no clear requirements for other collision functions. Therefore, most models on the market focus on how to ensure that the doors can be opened, and do not pay attention to other functions that can help rescue after a collision.

[0004] In the whole vehicle, after a collision, batteries and wiring harnesses are needed to supply power to ensure the normal operation of the functional devices corresponding to the functions that need attention after the collision. The wiring harness layout usually adopts the principle of proximity, that is, based on the convenience of wiring harness layout, the power supply wiring harnesses and fuses of some functional devices that are close to each other are placed together. This arrangement results in a long wiring harness for the whole vehicle, which is arranged in various positions of the whole vehicle. In a collision, it is inevitable that the wiring harness will be deformed and cut by the body sheet metal. The grounding of the wiring harness cutting will cause the fuse to blow, resulting in a drop in the power supply voltage of the whole vehicle. The more fuses that blow, the longer the voltage drop time and the greater the voltage drop, and even the voltage drops to 0V, which causes the functions that need attention after the collision to fail to work, affecting the rescue work after the collision. Summary of the invention

[0005] The main purpose of the embodiment of the present application is to provide a vehicle power system that brings together fuses for functions that require attention after a collision, thereby avoiding the failure of functions that require attention after a collision to work due to power supply problems, thereby affecting rescue work after the collision.

[0006] The technical solution of this application is as follows:

[0007] A power system of a vehicle includes a first fuse box, wherein a plurality of first fuses are arranged in the first fuse box, and the plurality of first fuses are arranged to be electrically connected one-to-one with headlights, taillights, door lock modules, wiper modules, steering systems, brake systems, vehicle gateway modules, central controllers, collision controllers, and battery management systems that need to work after a vehicle collision, so that fuses of a plurality of functional devices that need to work after a vehicle collision are all placed in the first fuse box, and a plurality of functional devices that need to work after a vehicle collision use separate first fuses respectively, so as to avoid affecting the operation of a plurality of functional devices after one of the first fuses is blown.

[0008] A vehicle comprises the above-mentioned vehicle power system.

[0009] The power system of the vehicle in the embodiment of the present application identifies and classifies the functions that are of concern to collision rescue. Not only are the fuses of the functional components that are of concern after a collision (such as: headlights, taillights, door lock modules, wiper modules, steering systems, braking systems, on-board gateway modules, central controllers, collision controllers, and battery management systems) integrated and placed in the first fuse box, but these functional components that are of concern after a collision also use separate first fuses respectively, thereby avoiding the impact of a first fuse blowing on the operation of multiple functional components, thereby increasing the safety level of the vehicle.

[0010] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0012] Figure 1 A schematic diagram of the structure of a vehicle power system according to an embodiment of the present application.

[0013] Figure 2 This is a flow chart of the working principle of a vehicle according to another embodiment of the present application.

[0014] Figure 3 This is a working principle diagram of the second power-off switch according to an embodiment of the present application.

[0015] Figure 4 This is a working principle diagram of a pyrotechnic power-off switch according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0017] In existing vehicles, the basic power supply method is to use the wiring harness from the positive pole of the battery to the controller used for a certain function, and then from the wiring harness to the negative pole of the battery. There will be a fuse to protect the functional electrical appliances. When the wiring harness power supply is abnormal, the fuse will fail, the entire power supply line will be open, and the function will fail. In the whole vehicle state, all functional electrical appliances on the whole vehicle are powered by a 12v battery in parallel circuit. During a collision, it often happens that a certain wiring harness or a group of wiring harnesses are deformed and squeezed by the body sheet metal or chassis in the collision deformation area, resulting in damage to the wiring harness, causing voltage drop or fuse failure.

[0018] Whether in a collision test or an actual traffic accident, deformation of the vehicle body and chassis is inevitable, and they need to absorb the collision energy through their deformation to reduce the damage to the driver and passengers. The wiring harness of the entire vehicle is spread throughout the vehicle, and it is inevitable that the wiring harness will not be squeezed. In other words, low voltage drop and fuse failure are inevitable. This will cause some functions of the vehicle to fail due to open circuit power supply after the collision. In severe cases, the entire vehicle may even fail to provide power.

[0019] In existing vehicles, the power supply logic is not classified, and it is not possible to identify which functions can be disabled and which functions cannot be disabled after a collision. Instead, the power supply harnesses and fuses of some functions are placed together based on the principle of proximity and the principle of convenient wiring harness layout. This results in the failure of functions that are of concern to collision and rescue after a collision, such as unlocking, emergency calls, gateways, double flash lights, wiper systems, etc., resulting in the vehicle being unable to provide sufficient support to subsequent vehicles and rescue personnel. Therefore, it is necessary to reduce the probability of failure of functions of concern after a collision as much as possible in the power supply strategy, which is also a way to reduce injuries to drivers and passengers.

[0020] Based on this, Figure 1 and Figure 2 As shown, an embodiment of the present application provides a power system for a vehicle, including a first fuse box, in which a plurality of first fuses are arranged, and the plurality of first fuses are arranged to be electrically connected in a one-to-one correspondence with at least two of the vehicle's headlights, taillights, door lock modules, wiper modules, steering systems, braking systems, on-board gateway modules, central controllers, collision controllers, and battery management systems.

[0021] In the power system of the vehicle, a plurality of first fuses are arranged in the first fuse box, and the plurality of first fuses are electrically connected one-to-one with at least two of the functional components that need to be paid attention to after a collision, such as the headlight, the rear light, the door lock module, the wiper module, the steering system, the braking system, the vehicle gateway module VGM (Vehicle Gateway Module), the central controller CEM (Central Electronic Module), the collision controller ACU (Airbag Contorl Unit), and the battery management system BMS (battery management system) of the vehicle, that is, the plurality of first fuses are connected in series one-to-one with the circuits where at least two of the functional components that need to be paid attention to after a collision, such as the headlight, the rear light, the door lock module, the wiper module, the steering system, the braking system, the vehicle gateway module VGM, the central controller CEM, the collision controller ACU, and the battery management system BMS, are located, so that the power supply safety of the functional components that need to be paid attention to after a collision, such as the headlight, the rear light, the door lock module, the wiper module, the steering system, the braking system, the vehicle gateway module VGM, the central controller CEM, the collision controller ACU, and the battery management system BMS, is ensured through the first fuses.

[0022] After a vehicle collision, the vehicle's headlights and taillights can work to facilitate identification of the colliding vehicle; the vehicle's door lock module can control the locking and unlocking of the vehicle doors. After the vehicle collision, the door lock module can work to control the unlocking of the vehicle doors to facilitate the driver and passengers in the vehicle to leave the colliding vehicle; the vehicle's wiper module can work after the vehicle collision to quickly remove liquids or solid objects on the windshield that affect the line of sight, giving the driver a good field of vision, increasing the chances of escape and self-rescue, and minimizing casualties; the vehicle's steering system and braking system can work after the vehicle collision so that the driver can control the vehicle and minimize the severity of the collision. The vehicle's on-board gateway module VGM can safely and reliably interconnect and transmit data within multiple different networks within the vehicle. The on-board gateway module VGM works after a vehicle collision to facilitate emergency calls for rescue; the vehicle's central controller CEM, as the main control unit of the vehicle body, can work after a vehicle collision to control the entire vehicle; the vehicle's collision controller ACU can work to control airbags, seat belts, etc. to provide protection for drivers and passengers; the vehicle's battery management system BMS can work to cut off the power supply of the high-voltage power battery to the load end as quickly as possible to reduce the probability of accidents, especially fire accidents.

[0023] The power system of the vehicle of the embodiment of the present application has identified and classified the functions concerned by collision rescue, and not only has the fuses of the functional devices concerned after the collision been integrated and placed in a large fuse box - the first fuse box, but also these functional devices concerned after the collision use separate first fuses, thereby avoiding the influence of a certain first fuse on the operation of multiple functional devices after the first fuse is blown, and making the safety level of the vehicle higher. The first fuse box can be called CJB (center junction box).

[0024] In some exemplary embodiments, Figure 1 As shown, the vehicle's power system also includes a low-voltage battery and a low-voltage backup battery. The first fuse box has a main power supply interface and a backup power supply interface. The main power supply interface is electrically connected to the low-voltage battery, and the backup power supply interface is electrically connected to the low-voltage backup battery.

[0025] In addition to using the low-voltage battery of the entire vehicle to power the first fuse box, an additional low-voltage backup battery is added to power it, forming a redundant design, effectively reducing the risk of power outages, and improving the reliability of normal operation of functional components of concern after a vehicle collision.

[0026] The low-voltage battery can be a 12V battery, the low-voltage backup battery can be a 12V battery, or a 12V capacitor, lithium battery or other similar power supply device can be used. The power battery (high-voltage battery) of the vehicle can be used to convert the voltage to charge the low-voltage battery; the low-voltage battery can also charge the low-voltage backup battery as needed.

[0027] In some exemplary embodiments, the first fuse box is configured as a passenger compartment fuse box installed in a passenger compartment of the vehicle, such as the first fuse box is configured to be installed under a seat in the passenger compartment, or installed in a footrest area in front of a seat in the passenger compartment.

[0028] The first fuse box can be called the passenger compartment fuse box, and is arranged in an area of ​​the passenger compartment that is not easily deformed, so as to avoid the influence of the deformation of the vehicle after the collision on the first fuse box as much as possible. The first fuse box can be set on the lower side of the seat (such as: the lower side of the front seat or the rear seat) or the footrest area in front of the seat (i.e., the area for the driver and passengers to put their feet, such as: the footrest area in front of the front seat, or the footrest area in front of the rear seat (between the front and rear seats)). The seat and the footrest area in front of the seat can be considered as the area that can be covered by the human body, because the vehicle is first to ensure the safety of people. Therefore, setting the first fuse box within the coverage of people can improve its safety and avoid the first fuse box from being deformed by collision.

[0029] In some exemplary embodiments, at least one second fuse is provided in the first fuse box, and the at least one second fuse is configured to be electrically connected one-to-one with any one or more of the reading light in the passenger compartment, the ambient light in the passenger compartment, the air-conditioning system, the instrument panel, and the steering wheel of the vehicle.

[0030] The first fuse box is set in the passenger compartment, and the passenger compartment is also equipped with reading lights, ambient lights, air conditioning system, instrument panel, steering wheel and other devices. Figure 2 As shown, based on the principle of proximity, the second fuse in the circuit where other electrical components in the passenger compartment, such as reading lights, ambient lights, air conditioning systems, instrument panels, and electronic components on the steering wheel, are located can be set in the first fuse box to avoid the power supply harness being too long.

[0031] In some exemplary embodiments, Figure 1 and Figure 2 As shown, the vehicle's power system also includes a second fuse box, in which at least one third fuse is provided, and the at least one third fuse is configured to be electrically connected one-to-one with any one or more of a reading light in the passenger compartment of the vehicle, an ambient light in the passenger compartment, an air-conditioning system, a water pump installed on the chassis of the vehicle, an engine, an active air intake grille, and an on-board radar.

[0032] In addition to the above-mentioned post-collision attention functions, there are some functions that do not need to be maintained after a collision or are relatively simple functions. The third fuses in the circuits where the functional devices corresponding to these functions are located can be integrated and placed in the second fuse box.

[0033] Reading lights in the passenger compartment, ambient lights in the passenger compartment, air-conditioning system, water pump installed on the chassis (can be used to input coolant into the required circuit to adjust the temperature of components, such as: engine temperature, battery (such as: low-voltage battery, low-voltage backup battery, power battery, etc.) temperature, cab temperature, etc.), engine, active air intake grille, vehicle-mounted radar (such as: millimeter wave radar) and other functional devices do not need to be maintained after a collision, especially a high-speed collision. Therefore, the third fuse can be connected in series one by one in the circuits where these functional devices are located.

[0034] It should be understood that the reading lights in the passenger compartment, the ambient lights in the passenger compartment, the fuses in the circuits where the air-conditioning system is located can be arranged in the first fuse box based on the principle of proximity, and the fuses in the circuits where the active air intake grille, the on-board radar, etc. are located can also be arranged in the first fuse box; or, since the reading lights in the passenger compartment, the ambient lights in the passenger compartment, the air-conditioning system, the active air intake grille, the on-board radar, etc. are functional components that do not need to be maintained after a collision, the fuses in their circuits can also be arranged in the second fuse box.

[0035] In some exemplary embodiments, the second fuse box is provided as a front compartment fuse box installed in an engine compartment (ie, a front compartment) of the vehicle.

[0036] The second fuse box can be a front compartment fuse box arranged in the engine compartment, which is convenient for maintenance and reduces costs. The second fuse box can be called EJB (Engine junction box).

[0037] In some exemplary embodiments, Figure 1 As shown, the electric system of the vehicle further includes a power distribution fuse box MDB, which can be arranged before the second fuse box and the non-crash-focused functional device.

[0038] In some exemplary embodiments, Figure 1 As shown, the vehicle's power system also includes a first power-off switch, which is electrically connected between the low-voltage battery and the second fuse box, and the first power-off switch is configured to be electrically connected to the vehicle's collision controller and can be disconnected under the control of the collision controller when the vehicle collides.

[0039] A first power-off switch is added before the second fuse box, and the first power-off switch is in a closed state under normal scenarios; when a collision occurs, the collision controller can detect the collision information of the vehicle through sensors. After receiving the collision signal, the collision controller can control the first power-off switch to complete the power-off operation of the second fuse box, effectively reducing or avoiding deformation of the engine compartment and squeezing of the wiring harness, thereby affecting the voltage of the entire vehicle.

[0040] In some exemplary embodiments, Figure 1 As shown, the first power-off switch may be a low-voltage pyrotechnical power-off switch PSS (Pyrotechnical safety switches). After receiving the signal from the collision controller, the low-voltage pyrotechnical power-off switch can complete the power-off operation of the second fuse box within 1ms-2ms (milliseconds). In addition, if the main power source (low-voltage battery) of the vehicle is a lithium battery, the battery management system BMS in the lithium battery can protect the lithium battery through an electronic fuse. Adding the low-voltage pyrotechnical power-off protection switch can disconnect the power supply before the BMS fuse MOS tube of the lithium battery, effectively protecting the lithium battery.

[0041] In some exemplary embodiments, Figure 1 and Figure 2 As shown, the vehicle's power system also includes a third fuse box, the third fuse box includes a fourth fuse and a fifth fuse, the fourth fuse is configured to be electrically connected between the low-voltage battery and the first fuse box, and the fifth fuse is configured to be electrically connected between the low-voltage battery and the second fuse box.

[0042] A third fuse box is added after the low-voltage battery. The third fuse box can be called a battery fuse box BFB (Battery fuse box). The low-voltage battery can be electrically connected to the first fuse box through the fourth fuse in the third fuse box, and the low-voltage battery can be electrically connected to the second fuse box through the fifth fuse in the third fuse box, so as to separately power the first fuse box CJB and the functional devices connected thereto, and the second fuse box EJB and the functional devices connected thereto to avoid mutual influence.

[0043] In some exemplary embodiments, Figure 1 and Figure 2 As shown, the third fuse box also includes a sixth fuse, which is configured to be electrically connected between the low-voltage battery and the main fuse of the high-low voltage converter of the high-voltage power supply module of the vehicle.

[0044] When the vehicle is a hybrid model or an electric vehicle, the high-voltage power supply module can supply power to the entire vehicle. The high-voltage electricity output by the high-voltage battery of the high-voltage power supply module can be converted into low-voltage electricity through a high-low voltage converter (DCDC (Direct current directcurrent) converter) to supply power to the low-voltage load. A main fuse (DCDC main fuse) is provided at the output end of the high-low voltage converter, and the low-voltage battery can be electrically connected to the DCDC main fuse through the sixth fuse in the third fuse box to supply power to the high-low voltage conversion function electrical device (DCDC converter or ODP (integrated vehicle power management module) or all-in-one conversion device) through the DCDC main fuse. In addition, after the high-voltage electricity output by the high-voltage battery is converted by the DCDC converter, it can be supplied to the low-voltage load after passing through the third fuse box, instead of directly supplying power to the low-voltage load. Among them, the physical positions of the low-voltage battery and the third fuse box can be set together or not together.

[0045] A third fuse box is added behind the low-voltage battery, so that after the low-voltage battery or the high-voltage battery is converted by the DCDC converter, the first fuse box CJB and the functional devices connected thereto, the second fuse box EJB and the functional devices connected thereto, and the DCDC main fuse and the functional devices connected thereto can be powered separately to avoid mutual influence.

[0046] It should be understood that one of the DCDC main fuse and the sixth fuse in the third fuse box may be omitted.

[0047] In some exemplary embodiments, Figure 1As shown, the vehicle's power system also includes a high-voltage power supply module, which includes a power battery and a high-voltage power supply circuit. The power battery supplies power to the load through the high-voltage power supply circuit. A second power-off switch is provided on the high-voltage power supply circuit. The second power-off switch is configured to be electrically connected to the vehicle's collision controller and can be disconnected under the control of the collision controller when the vehicle collides.

[0048] When the vehicle is a hybrid or electric vehicle, the vehicle also includes a high-voltage power supply module, the power battery (high-voltage battery) of which can output high-voltage electricity through a high-voltage power supply circuit, and the high-voltage electricity can be supplied to a high-voltage load, or supplied to a low-voltage load after conversion by a DCDC converter. Adding a second power-off switch to the high-voltage power supply circuit of the high-voltage battery can ensure that the external power supply of the high-voltage power supply module is quickly cut off when a collision occurs, effectively reducing secondary damage caused by high voltage.

[0049] In some exemplary embodiments, Figure 1 As shown, the second power-off switch may be a high-voltage pyrotechnic power-off switch. The working principle of the high-voltage pyrotechnic power-off switch is as follows: Figure 3 shown.

[0050] Adding a high-voltage pyrotechnic power-off switch to the high-voltage power supply circuit of the high-voltage battery can ensure that the external power supply of the high-voltage power supply module can be cut off within 1ms-2ms when a collision occurs. Among them, the high-voltage pyrotechnic power-off switch can be arranged inside the high-voltage power supply module, and the battery management system BMS can be electrically connected to the power battery through the high-voltage pyrotechnic power-off switch (the high-voltage pyrotechnic power-off switch can be connected in series to the battery management system BMS circuit). The high-voltage pyrotechnic power-off switch can be opened or closed. When the second power-off switch is opened, the high-voltage power supply module can be cut off from supplying power to the outside, and the power supply inside the high-voltage power supply module and the judgment of the battery management system BMS are still working.

[0051] It should be understood that the first power-off switch and the second power-off switch are not limited to being a pyrotechnic power-off switch PSS (the working principle of the pyrotechnic power-off switch PSS is as follows: Figure 4 As shown), it can also be other types of switches, such as relays.

[0052] An embodiment of the present application also provides a vehicle, comprising a power system of the vehicle provided by any of the above embodiments.

[0053] In summary, the power system of the vehicle in the embodiment of the present application optimizes the logic of the power supply of the whole vehicle, classifies the functions of the whole vehicle, optimizes each link and improves the functional safety redundancy, which can solve the post-collision function problems under collision and extreme collision conditions, and ensure the perfection of functions such as unlocking after collision, emergency call rescue, and high voltage disconnection. The power system of the vehicle in the embodiment of the present application changes the power supply strategy, realizes the classified layout of functions, and adds the passenger compartment fuse box, front compartment fuse box, battery fuse box, low-voltage backup battery, low-voltage pyrotechnic power-off switch, high-voltage pyrotechnic power-off switch, etc., to realize the distribution of the main power supply, and more redundancy, so that the safety level of the vehicle function is higher, which can meet the functions of extremely severe collision scenarios.

[0054] In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0055] In the description of the present application, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, 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 the present invention can be understood according to specific circumstances.

[0057] In the present invention, 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" or "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" or "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 less than or equal to the second feature in level.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 invention. 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, without contradiction.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0060] It will be appreciated by those skilled in the art that the functional modules / modules in all or some of the systems and devices in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / modules mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function may be performed by several physical components in cooperation. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0061] Although the embodiments disclosed herein are as above, the contents described are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed herein, but the scope of patent protection of the present invention shall still be defined by the attached claims.

Claims

1. A vehicle power system, characterized in that: A first fuse box is included, wherein a plurality of first fuses are arranged in the first fuse box, and the plurality of first fuses are arranged to be electrically connected to the headlights, rear lights, door lock modules, wiper modules, steering systems, brake systems, vehicle gateway modules, central controllers, collision controllers, and battery management systems that need to work after a vehicle collision, one by one, so that fuses of the plurality of functional devices that need to work after a vehicle collision are all placed in the first fuse box, and the plurality of functional devices that need to work after a vehicle collision use separate first fuses respectively, so as to avoid affecting the work of the plurality of functional devices after one of the first fuses is blown; The vehicle's power system also includes a second fuse box, in which at least one third fuse is provided. The at least one third fuse is configured to be electrically connected in a one-to-one correspondence with any one or more of a reading light in the vehicle's passenger compartment, an ambient light in the passenger compartment, an air-conditioning system, a water pump installed on the vehicle's chassis, an engine, an active air intake grille, and an on-board radar.

2. The vehicle power system according to claim 1, characterized in that: It also includes a low-voltage battery and a low-voltage backup battery. The first fuse box has a main power supply interface and a backup power supply interface. The main power supply interface is electrically connected to the low-voltage battery, and the backup power supply interface is electrically connected to the low-voltage backup battery.

3. The vehicle power system according to claim 1, characterized in that: The first fuse box is configured as a passenger compartment fuse box installed in a passenger compartment of a vehicle.

4. The vehicle power system according to claim 3, characterized in that: The first fuse box is configured to be installed on a lower side of a seat in the passenger compartment, or installed in a footrest area in front of a seat in the passenger compartment.

5. The vehicle power system according to any one of claims 1 to 4, characterized in that: At least one second fuse is provided in the first fuse box, and at least one second fuse is configured to be electrically connected to any one or more of a reading light in the passenger compartment of the vehicle, an ambient light in the passenger compartment, an air conditioning system, an instrument panel, and a steering wheel.

6. The vehicle power system according to claim 1, characterized in that: The second fuse box is configured as a front compartment fuse box installed in an engine compartment of a vehicle.

7. The vehicle power system according to claim 1, characterized in that: It also includes a first power-off switch, which is electrically connected between the low-voltage battery and the second fuse box. The first power-off switch is configured to be electrically connected to a collision controller of the vehicle and can be disconnected under the control of the collision controller when a collision occurs in the vehicle.

8. The vehicle power system according to claim 1, characterized in that: It also includes a third fuse box, which includes a fourth fuse and a fifth fuse. The fourth fuse is configured to be electrically connected between the low-voltage battery and the first fuse box, and the fifth fuse is configured to be electrically connected between the low-voltage battery and the second fuse box.

9. The vehicle power system according to claim 8, characterized in that: The third fuse box further includes a sixth fuse, which is arranged to be electrically connected between the low-voltage battery and a main fuse of a high-low voltage converter of a high-voltage power supply module of the vehicle.

10. The vehicle power system according to any one of claims 1 to 4, characterized in that: It also includes a high-voltage power supply module, which includes a power battery and a high-voltage power supply circuit. The power battery supplies power to the load through the high-voltage power supply circuit. A second power-off switch is provided on the high-voltage power supply circuit. The second power-off switch is configured to be electrically connected to a collision controller of the vehicle and can be disconnected under the control of the collision controller when a collision occurs in the vehicle.

11. A vehicle, characterized in that: An electric power system for a vehicle comprising any one of claims 1 to 10.

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