Power distribution system for a vehicle and vehicle

Abstract

The application discloses a power distribution system of a vehicle and the vehicle, and belongs to the field of vehicles. The power distribution system of the vehicle comprises a first power distribution system connected with a first power consumption system, a first control device connected with the first power distribution system, a second power distribution system connected with a second power consumption system, and a second control device connected with the second power distribution system and connected in series with the first control device. The power distribution system of the vehicle can supply power to the power consumption system corresponding to the faulty power distribution system by the other power distribution system in the case that any one of the first power distribution system and the second power distribution system is faulty, so that the function of the power distribution unit is maintained normal, and the risk of safety accidents can be reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a vehicle power distribution system and a vehicle. Background Technology

[0002] In related technologies, the power distribution architecture of L4 autonomous driving for electric vehicles typically includes a main power system and a redundant power system, but the following problems exist: 1) The main power distribution system (including DC-DC converters and batteries) and the redundant power distribution system (including DC-DC converters and batteries) are completely physically isolated. When the DC-DC converter in the main power distribution or redundant power distribution fails, it is impossible to use a normal DC-DC converter to charge the battery on the other side. When the DC-DC converter and battery in the main power distribution or redundant power distribution fail, the corresponding power distribution unit function is completely lost, and it is impossible to maintain the normal function of all power distribution channels; 2) The main power distribution system (including DC-DC converters and batteries) and the redundant power distribution system (DC-DC converters or batteries) are connected through a redundant power distribution controller. This scheme will face the risk of safety accidents when the redundant power distribution controller fails. Utility Model Content

[0003] This application provides a vehicle power distribution system and a vehicle, which can supply power to the power system corresponding to the faulty power distribution system by the other power distribution system in the event of a failure in either the first power distribution system or the second power distribution system, thereby maintaining the normal function of the power distribution unit; and can reduce the risk of safety accidents.

[0004] In a first aspect, embodiments of this application provide a vehicle power distribution system, including: The first power distribution system is connected to the first power consumption system; A first control device is connected to the first power distribution system; The second power distribution system is connected to the second power consumption system; The second control device is connected to the second power distribution system and is connected in series with the first control device.

[0005] In the above technical solution, by setting a first control device and a second control device connected in series between the first power distribution system and the second power distribution system, the circuit isolation or conduction between the first power distribution system and the second power distribution system can be achieved by controlling the opening and closing states of the first control device and the second control device. The output functions of the first power distribution system and the second power distribution system can be completely isolated without the assistance of any additional controller. In the event of a failure in either the first power distribution system or the second power distribution system, the other power distribution system can supply power to the power consumption system corresponding to the failed power distribution system, thereby maintaining the normal function of the power distribution unit. In the event that the first power distribution system and the second power distribution system need to be isolated and either control device fails, disconnecting the other control device can still quickly cut off the connection between the first power distribution system and the second power distribution system, which has high fault tolerance and reduces the risk of safety accidents.

[0006] In some embodiments, the first control device includes a first MOSFET and a second MOSFET connected in series, with the first MOSFET and the second MOSFET arranged back to back.

[0007] In some embodiments, the first control device includes a first driver chip, which is electrically connected to the first MOSFET and the second MOSFET respectively.

[0008] In some embodiments, the second control device includes a third MOS transistor and a fourth MOS transistor connected in series, the third MOS transistor and the fourth MOS transistor being arranged back to back.

[0009] In some embodiments, the second control device includes a second driver chip, which is electrically connected to the third MOS transistor and the fourth MOS transistor, respectively.

[0010] In some embodiments, the first power distribution system includes: At least one first-function power supply control module, one end of which is connected to the first control device, and the other end of which is used to connect to the load that requires redundancy backup; At least one secondary power supply control module is provided, with one end connected to the first control device and the other end used to connect to a load that does not require redundant backup.

[0011] In some embodiments, the second power distribution system includes: At least one third-function power supply control module, one end of which is connected to the second control device, and the other end of which is used to connect to the load that requires redundancy backup; At least one fourth-function power supply control module, one end of which is connected to the second control device, and the other end of which is used to connect to a load that does not require redundant backup.

[0012] In some embodiments, the first power distribution system includes: First energy storage module; First DC / DC module; A third control device and a fourth control device are connected in series between the first energy storage module and the first DC / DC module. One end of the first control device is connected between the third control device and the fourth control device, and the other end of the first control device is connected to the second control device.

[0013] In some embodiments, the second power distribution system includes: Second energy storage module; Second DC / DC module; A fifth control device and a sixth control device are connected in series between the second energy storage module and the second DC / DC module. One end of the second control device is connected between the fifth control device and the sixth control device, and the other end of the second control device is connected to the first control device.

[0014] Secondly, embodiments of this application provide a vehicle. Attached Figure Description

[0015] Figure 1 One of the structural schematic diagrams of a vehicle's power distribution system provided in some embodiments of this application; Figure 2 This is a second schematic diagram of the structure of a vehicle's power distribution system provided in some embodiments of this application.

[0016] Figure label: First power distribution system 101; first functional power supply control module 107; second functional power supply control module 108; Third control device 103; Fourth control device 104; First power system 109; First energy storage module 102; First DC / DC module 105; First control device 106; First MOSFET Q1; Second MOSFET Q2; Second power distribution system 201; Third function power supply control module 207; Fourth function power supply control module 208; Fifth control device 203; Sixth control device 204; Second power system 209; Second energy storage module 202; Second DC / DC module 205; second control device 206; third MOSFET Q3; fourth MOSFET Q4. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0019] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0022] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0023] The following description, in conjunction with the accompanying drawings, details the vehicle power distribution system and the vehicle provided in this application through specific embodiments and application scenarios.

[0024] The inventors discovered that the existing power distribution architecture for L4 autonomous driving in electric vehicles typically consists of a main power system and a redundant power system, but it has the following problems: One is that the main power distribution system (including DC-DC converters and batteries) and the redundant power distribution system (including DC-DC converters and batteries) are completely physically isolated. In this scheme, when the DC-DC converter in the main power distribution or redundant power distribution fails, it is impossible to use a normal DC-DC converter to charge the battery on the other side. When the DC-DC converter and battery in the main power distribution or redundant power distribution fail, the corresponding power distribution unit function is completely lost, and it is impossible to maintain the normal function of all power distribution channels. Another is that the main power distribution system (including DC-DC converters and batteries) and the redundant power distribution system (DC-DC converters or batteries) are connected through a redundant power distribution controller. This scheme will face the risk of safety accidents when the redundant power distribution controller fails.

[0025] Based on the above considerations, in order to solve the problems of not being able to keep all power distribution channels functioning normally and the risk of safety accidents when redundant power distribution controllers fail, the inventors, after in-depth research, designed a vehicle power distribution system, including a first power distribution system connected to a first power consumption system; a first control device connected to the first power distribution system; a second power distribution system connected to a second power consumption system; and a second control device connected to the second power distribution system and connected in series with the first control device.

[0026] In this vehicle's power distribution system, a first control device and a second control device are connected in series between the first and second power distribution systems. The opening and closing states of these two devices achieve circuit isolation or connection between the first and second power distribution systems. This completely isolates the output functions of the first and second power distribution systems without requiring any additional controllers. In the event of a failure in either the first or second power distribution system, the other power distribution system can supply power to the corresponding electrical system, thus maintaining the normal function of the power distribution unit. Furthermore, even if isolation between the first and second power distribution systems is required, and either control device fails, disconnecting the other control device can quickly break the connection between the first and second power distribution systems, demonstrating high fault tolerance and reducing the risk of safety accidents.

[0027] like Figure 1 As shown, the vehicle's power distribution system includes: a first power distribution system 101, a first control device 106, a second power distribution system 201, and a second control device 206.

[0028] It should be noted that the vehicle's power distribution system can be used in the power distribution architecture of L4 autonomous driving for electric vehicles.

[0029] The first power distribution system 101 and the second power distribution system 201 are both integrated power distribution systems. When the first power distribution system 101 is the main power supply system, the second power distribution system 201 can be a redundant power supply system; when the first power distribution system 101 is a redundant power supply system, the second power distribution system 201 can be the main power supply system.

[0030] It is understandable that the main power system is used for basic power distribution during normal vehicle operation; the redundant power system is used for redundant power distribution when the vehicle is in an emergency.

[0031] The first power distribution system 101 and the second power distribution system 201 are each used independently to connect to the power consumption system and to supply power to the power consumption system.

[0032] The power systems include, but are not limited to: power systems requiring redundant backup power supply and power systems not requiring redundant backup power supply. Power systems requiring redundant backup power supply include, but are not limited to: braking systems, domain control systems, steering systems, radar systems, etc.

[0033] Taking the power distribution architecture of L4 autonomous driving in electric vehicles as an example, two identical power systems can be set up in the vehicle, namely the first power system 109 and the second power system 209. The first power system 109 is connected to the first power distribution system 101, and the second power system 209 is connected to the second power distribution system 201.

[0034] The first control device 106 is connected to the first power distribution system 101, the second control device 206 is connected to the second power distribution system 201, and the second control device 206 is connected in series with the first control device 106.

[0035] It should be noted that the first control device 106 and the second control device 206 are equipped with switch controls for controlling the on / off state of their respective paths. The first control device 106 and the second control device 206 are controlled independently and do not affect each other. That is, if the first control device 106 fails, the second control device 206 can be disconnected independently; if the second control device 206 fails, the first control device 106 can be disconnected independently.

[0036] In some embodiments, the first control device 106 and the second control device 206 may be relays. In some embodiments, a current detection circuit may also be provided to detect whether the relay has stuck together.

[0037] In some embodiments, the first control device 106 and the second control device 206 have a large current carrying capacity.

[0038] In some embodiments, the first control device 106 and the second control device 206 can be efuse (electronic fuse) control units, which can achieve a circuit path interruption rate on the order of microseconds or nanoseconds, and can also automatically or by command recover and reclose after the fault condition is cleared.

[0039] In actual operation, if either the first control device 106 or the second control device 206 is disconnected, the first power distribution system 101 and the second power distribution system 201 will be disconnected.

[0040] When both the first control device 106 and the second control device 206 are on, the first power distribution system 101 and the second power distribution system 201 are connected. In the event of a fault in the first power distribution system 101, the second power distribution system 201 can supply power to the first power consumption system 109 corresponding to the first power distribution system 101 via the paths of the first control device 106 and the second control device 206, so that the first power consumption system 109 can maintain normal power consumption. In the event of a fault in the second power distribution system 201, the first power distribution system 101 can supply power to the second power consumption system 209 corresponding to the second power distribution system 201 via the paths of the first control device 106 and the second control device 206, so that the second power consumption system 209 can maintain normal power consumption.

[0041] In the event of a short circuit in the first power system 109, the connection between the first power distribution system 101 and the second power distribution system 201 can be severed by disconnecting either the first control device 106 or the second control device 206, or by disconnecting both the first control device 106 and the second control device 206, thus ensuring the normal operation of the second power system 209.

[0042] In the event of a short circuit in the second power system 209, either the first control device 106 or the second control device 206 can be disconnected, or both the first control device 106 and the second control device 206 can be disconnected, thereby cutting off the connection between the first power distribution system 101 and the second power distribution system 201 and ensuring the normal operation of the first power system 109.

[0043] In the event that the connection between the first power distribution system 101 and the second power distribution system 201 needs to be disconnected, if either the first control device 106 or the second control device 206 fails and cannot be disconnected, the connection between the first power distribution system 101 and the second power distribution system 201 can be disconnected simply by disconnecting the other normal control device.

[0044] According to the vehicle power distribution system provided in the embodiments of this application, by setting a first control device 106 and a second control device 206 connected in series between the first power distribution system 101 and the second power distribution system 201, the circuit isolation or conduction between the first power distribution system 101 and the second power distribution system 201 can be achieved by controlling the opening and closing states of the first control device 106 and the second control device 206. The output functions of the first power distribution system 101 and the second power distribution system 201 can be completely isolated without the assistance of any additional controller. In the event of a failure in either the first power distribution system 101 or the second power distribution system 201, the other power distribution system can supply power to the corresponding power system of the failed power distribution system, thereby maintaining the normal function of the power distribution unit. Even when isolation between the first power distribution system 101 and the second power distribution system 201 is required, and either control device fails, disconnecting the other control device can still quickly cut off the connection between the first power distribution system 101 and the second power distribution system 201, exhibiting high fault tolerance and reducing the risk of safety accidents.

[0045] like Figure 2 As shown, in some embodiments, the first control device 106 includes a first MOS transistor Q1 and a second MOS transistor Q2 connected in series.

[0046] In this embodiment, the first MOSFET Q1 and the second MOSFET Q2 can be NMOS transistors. The first MOSFET Q1 and the second MOSFET Q2 are arranged in opposite directions.

[0047] Taking an NMOS transistor as an example, such as Figure 2 As shown, the anode of the diode in the first MOSFET Q1 is connected to the anode of the diode in the second MOSFET Q2. The first MOSFET Q1 and the second MOSFET Q2 are connected in series and then connected to the first power distribution system 101.

[0048] In some embodiments, the first control device 106 includes a first driver chip.

[0049] In this embodiment, the first driving chip is electrically connected to the first MOSFET Q1 and the second MOSFET Q2 respectively, and is used to control the on / off state of the first MOSFET Q1 and the second MOSFET Q2, the on / off state including being on or off.

[0050] In some embodiments, the electrical connection may include a wireless communication connection or a wired electrical connection, which is not limited herein.

[0051] In some embodiments, the second control device 206 includes a third MOSFET Q3 and a fourth MOSFET Q4 connected in series.

[0052] In this embodiment, the third MOSFET Q3 and the fourth MOSFET Q4 can be NMOS transistors. The third MOSFET Q3 and the fourth MOSFET Q4 are arranged back-to-back.

[0053] Taking an NMOS transistor as an example, such as Figure 2 As shown, the anode of the diode in the third MOSFET Q3 is connected to the anode of the diode in the fourth MOSFET Q4. The third MOSFET Q3 and the fourth MOSFET Q4 are connected in series and then connected to the second power distribution system 201.

[0054] In some embodiments, the second control device 206 includes a second driver chip.

[0055] In this embodiment, the second driving chip is electrically connected to the third MOSFET Q3 and the fourth MOSFET Q4 respectively, and is used to control the on / off state of the third MOSFET Q3 and the fourth MOSFET Q4, the on / off state including being on or off.

[0056] The second MOSFET Q2 and the third MOSFET Q3 are connected. Taking an NMOS transistor as an example, please refer to [link / reference]. Figure 2 The cathode of the diode in the second MOSFET Q2 is connected to the cathode of the diode in the third MOSFET Q3. The first MOSFET Q1 is connected to the first power distribution system 101, and the fourth MOSFET Q4 is connected to the second power distribution system 201.

[0057] According to the vehicle power distribution system provided in the embodiments of this application, by setting the first control device 106 and the second control device 206 as two MOS transistors connected in opposite directions, it is possible to further control the direction of energy flow on the basis of controlling the on and off states. This allows the system to cut off the energy flowing from the first power distribution system 101 to the second power distribution system 201, and / or the energy flowing from the second power distribution system 201 to the first power distribution system 101. This provides high control accuracy and reduces the risk of safety accidents when a single control unit fails.

[0058] like Figure 2 As shown, in some embodiments, the first power distribution system 101 includes at least one first function power supply control module 107 and at least one second function power supply control module 108.

[0059] In this embodiment, the first functional power supply control module 107 is a power supply control module requiring redundant backup function, such as an efuse module. There can be one or more first functional power supply control modules 107, one end of each first functional power supply control module 107 is connected to the first control device 106, and the other end is used to connect to the load requiring redundant backup.

[0060] The first functional power supply control module 107 is configured to correspond one-to-one with the loads that require redundant backup.

[0061] The second functional power supply control module 108 is another functional power supply control module that does not require redundancy backup, such as an efuse module or an HSD module. There can be one or more second functional power supply control modules 108. One end of the second functional power supply control module 108 is connected to the first control device 106, and the other end is used to connect to the load that does not require redundancy backup.

[0062] Continue to refer to Figure 2 In some embodiments, one end of the first functional power supply control module 107 and the second functional power supply control module 108 are respectively connected to the end of the first control device 106 connected to the first power distribution system 101. The second power distribution system 201 is connected to the load requiring redundancy backup via the second control device 206, the first control device 106 and the first functional power supply control module 107 in sequence. The second power distribution system 201 is connected to the load that does not require redundancy backup via the second control device 206, the first control device 106 and the second functional power supply control module 108 in sequence.

[0063] like Figure 2 As shown, in some embodiments, the second power distribution system 201 includes at least one third-function power supply control module 207 and at least one fourth-function power supply control module 208.

[0064] In this embodiment, the third functional power supply control module 207 is a power supply control module requiring redundant backup function, such as an efuse module. There can be one or more third functional power supply control modules 207. One end of the third functional power supply control module 207 is connected to the second control device 206, and the other end is used to connect to the load requiring redundant backup.

[0065] The third function power supply control module 207 is configured to correspond one-to-one with the loads that require redundant backup.

[0066] The fourth functional power supply control module 208 is another functional power supply control module that does not require redundancy backup, such as an efuse module or an HSD module. There can be one or more fourth functional power supply control modules 208. One end of the fourth functional power supply control module 208 is connected to the second control device 206, and the other end is used to connect to the load that does not require redundancy backup.

[0067] Continue to refer to Figure 2In some embodiments, one end of the third functional power supply control module 207 and the fourth functional power supply control module 208 are respectively connected to the end of the second control device 206 that connects to the second power distribution system 201. The first power distribution system 101 is connected to the load requiring redundancy backup via the first control device 106, the second control device 206 and the third functional power supply control module 207 in sequence; the first power distribution system 101 is connected to the load that does not require redundancy backup via the first control device 106, the second control device 206 and the fourth functional power supply control module 208 in sequence.

[0068] like Figure 2 As shown, in some embodiments, the first power distribution system 101 includes: a first energy storage module 102, a first DC / DC module 105, a third control device 103, and a fourth control device 104.

[0069] In this embodiment, the third control device 103 is the intelligent control switch for the first energy storage module 102, and the fourth control device 104 is the intelligent control switch for the first DC / DC module 105. The third control device 103 and the fourth control device 104 are connected in series between the first energy storage module 102 and the first DC / DC module 105.

[0070] The third control device 103 and the fourth control device 104 can have the same structure as the first control device 106, such as including two MOS transistors arranged in opposite directions and a driver chip connected to each MOS transistor.

[0071] One end of the first control device 106 is connected between the third control device 103 and the fourth control device 104, and the other end of the first control device 106 is connected to the second control device 206.

[0072] In some embodiments, one end of the first functional power supply control module 107 and the second functional power supply control module 108 is connected between the third control device 103 and the fourth control device 104.

[0073] like Figure 2 As shown, in some embodiments, the second power distribution system 201 includes: a second energy storage module 202, a second DC / DC module 205, a fifth control device 203, and a sixth control device 204.

[0074] In this embodiment, the fifth control device 203 is the intelligent control switch of the second energy storage module 202, and the sixth control device 204 is the intelligent control switch of the second DC / DC module 205.

[0075] The fifth control device 203 and the sixth control device 204 are connected in series between the second energy storage module 202 and the second DC / DC module 205.

[0076] The fifth control device 203 and the sixth control device 204 can have the same structure as the second control device 206, such as including two MOS transistors arranged in opposite directions and a driver chip connected to each MOS transistor.

[0077] One end of the second control device 206 is connected between the fifth control device 203 and the sixth control device 204, and the other end of the second control device 206 is connected to the first control device 106.

[0078] In some embodiments, one end of the third functional power supply control module 207 and the fourth functional power supply control module 208 is connected between the fifth control device 203 and the sixth control device 204.

[0079] The energy storage module of this application includes one or more battery clusters to increase the voltage and capacity of the energy storage module. A battery cluster may include multiple battery devices, which are connected in series via a busbar to increase the voltage of the energy storage module. When the energy storage module includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage module.

[0080] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0081] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0082] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0083] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0084] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0085] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0086] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0087] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0088] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0089] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0090] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0091] Battery cells can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to any of these. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to any of these types either.

[0092] A battery cell includes a casing, electrode components, and electrolyte. The casing houses the electrode components and electrolyte. The electrode components consist of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode components. The positive electrode includes a positive current collector and a positive active material layer. The positive current collector includes a current collector body and a positive electrode tab. The positive active material layer is coated on the surface of the current collector body, while the positive electrode tab is not coated with the positive active material layer and protrudes from the current collector body. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative current collector includes a current collector body and a negative electrode tab. The negative active material layer is coated on the surface of the current collector body, while the negative electrode tab is not coated with the negative active material layer and protrudes from the current collector body. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0093] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0094] The following is combined Figure 2 Taking the first DC / DC module 105 as DCCDL and the second DC / DC module 205 as DCCDR as an example, the execution logic of the vehicle's power distribution system in this application will be explained.

[0095] In actual operation, for example, if the first DC / DC module 105 experiences an input abnormality, the fourth control device 104 can be controlled to disconnect, thereby severing the connection between the first DC / DC module 105 and the system, allowing the first energy storage module 102 to supply power to the first power system 109. The second control device 206 and the first control device 106 remain in a closed state, and the second DC / DC module 205 can replenish power to the first energy storage module 102 through the connection path between the second control device 206 and the first control device 106, ensuring a stable power supply to the first power system 109 for an extended period.

[0096] For example, if both the first DC / DC module 105 and the first energy storage module 102 malfunction, the third control device 103 and the fourth control device 104 can be disconnected to cut off the connection between the first DC / DC module 105 and the first energy storage module 102 and the system. The second control device 206 and the first control device 106 remain closed, and the second DC / DC module 205 continues to supply power to the power-consuming units in the first power system 109 that require power through the paths of the second control device 206 and the first control device 106. For example, the power-consuming units that need power can be selected through the first functional power supply control module 107 and the second functional power supply control module 108 to maintain the integrity of the vehicle's functions.

[0097] For example, in the event of an input abnormality in the second DC / DC module 205, the sixth control device 204 can be disconnected to cut off the connection between the second DC / DC module 205 and the system, allowing the second energy storage module 202 to supply power to the second power system 209. The first control device 106 and the second control device 206 remain closed, and the first DC / DC module 105 can replenish power to the second energy storage module 202 through the connection path between the first control device 106 and the second control device 206, ensuring a stable power supply to all power systems in the second power system 209 for an extended period.

[0098] For example, if both the second DC / DC module 205 and the second energy storage module 202 malfunction, the fifth control device 203 and the sixth control device 204 can be disconnected to cut off the connection between the second DC / DC module 205 and the second energy storage module 202 and the system. The first control device 106 and the second control device 206 remain closed, and the first DC / DC module 105 continues to supply power to the power-consuming units in the second power system 209 that require power through the connection path of the first control device 106 and the second control device 206. The power-consuming units that need power can be selected through the third functional power supply control module 207 and the fourth functional power supply control module 208 to maintain the integrity of the vehicle's functions.

[0099] In some embodiments, if a short circuit occurs in either the first power system 109 or the second power system 209, the short-circuited load can be disconnected by controlling the first control device 106 or the second control device 206 to maintain the normal operation of the components that have not failed.

[0100] In some embodiments, if either the first control device 106 or the second control device 206 fails, the other control device that has not failed can be disconnected normally, thereby reducing the risk of a safety accident due to the inability to disconnect when a single control unit fails.

[0101] It should be noted that the first power distribution system 101 and the second power distribution system 201 each have independent battery intelligent control switches (third control device 103 and fifth control device 203) and DC-DC intelligent control switches (fourth control device 104 and sixth control device 204). When any power supply terminal fails, it can be disconnected in time by cutting off the control device connected to it. Each control device can be controlled by efuse. Power supply can be restored after the fault is cleared.

[0102] On the connection path between the first power distribution system 101 and the second power distribution system 201, a first control device 106 and a second control device 206 that are independent of each other are respectively provided. When the first control device 106 and the second control device 206 are closed, power can be supplied to the other integrated power distribution system through the connection path when one integrated power distribution system fails. Alternatively, if either the first control device 106 or the second control device 206 fails, the connection path can be disconnected by cutting off the other control device, thus maintaining the independence of the integrated power distribution system.

[0103] The vehicle power distribution system provided in this application can achieve redundancy in input power supply, power supply redundancy in the power consumption system, and redundancy in key functions such as braking system, domain control system, steering system, and radar system. It is suitable for L4 level autonomous driving application scenarios and effectively ensures the operational safety of the vehicle.

[0104] This application also provides a vehicle.

[0105] The vehicle includes: the power distribution system and the power consumption system of the vehicle as described in any of the above embodiments.

[0106] The electrical system is connected to the vehicle's power distribution system.

[0107] In some embodiments, the vehicle includes a power distribution architecture for Level 4 autonomous driving.

[0108] According to the vehicle provided in the embodiments of this application, by setting a first control device and a second control device connected in series between a first power distribution system and a second power distribution system, the circuit isolation or conduction between the first power distribution system and the second power distribution system can be realized by the opening and closing states of the first control device and the second control device. In the event of a failure of either the first power distribution system or the second power distribution system, the other power distribution system can supply power to the power consumption system corresponding to the failed power distribution system, thereby maintaining the normal function of the power distribution unit. In the event that the first power distribution system and the second power distribution system need to be isolated and either control device fails, disconnecting the other control device can still quickly cut off the connection between the first power distribution system and the second power distribution system, which has high fault tolerance and reduces the risk of safety accidents.

[0109] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0110] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0111] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0112] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0113] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle power distribution system, characterized in that, include: The first power distribution system is connected to the first power consumption system; A first control device is connected to the first power distribution system; The second power distribution system is connected to the second power consumption system; The second control device is connected to the second power distribution system and is connected in series with the first control device.

2. The vehicle power distribution system according to claim 1, characterized in that, The first control device includes a first MOSFET and a second MOSFET connected in series, with the first MOSFET and the second MOSFET arranged back to back.

3. The vehicle power distribution system according to claim 2, characterized in that, The first control device includes a first driver chip, which is electrically connected to the first MOS transistor and the second MOS transistor respectively.

4. The vehicle power distribution system according to claim 1, characterized in that, The second control device includes a third MOSFET and a fourth MOSFET connected in series, with the third MOSFET and the fourth MOSFET arranged back to back.

5. The vehicle power distribution system according to claim 4, characterized in that, The second control device includes a second driver chip, which is electrically connected to the third MOS transistor and the fourth MOS transistor, respectively.

6. The vehicle power distribution system according to any one of claims 1-5, characterized in that, The first power distribution system includes: At least one first-function power supply control module, one end of which is connected to the first control device, and the other end of which is used to connect to the load that requires redundancy backup; At least one secondary power supply control module is provided, with one end connected to the first control device and the other end used to connect to a load that does not require redundant backup.

7. The vehicle power distribution system according to any one of claims 1-5, characterized in that, The second power distribution system includes: At least one third-function power supply control module, one end of which is connected to the second control device, and the other end of which is used to connect to the load that requires redundancy backup; At least one fourth-function power supply control module, one end of which is connected to the second control device, and the other end of which is used to connect to a load that does not require redundant backup.

8. The vehicle power distribution system according to any one of claims 1-5, characterized in that, The first power distribution system includes: First energy storage module; First DC / DC module; A third control device and a fourth control device are connected in series between the first energy storage module and the first DC / DC module. One end of the first control device is connected between the third control device and the fourth control device, and the other end of the first control device is connected to the second control device.

9. The vehicle power distribution system according to any one of claims 1-5, characterized in that, The second power distribution system includes: Second energy storage module; Second DC / DC module; A fifth control device and a sixth control device are connected in series between the second energy storage module and the second DC / DC module. One end of the second control device is connected between the fifth control device and the sixth control device, and the other end of the second control device is connected to the first control device.

10. A vehicle, characterized in that, include: The vehicle's power distribution system as described in any one of claims 1-9; The electrical system is connected to the vehicle's electrical distribution system.

Images