CN219236957U - Power supply topological structure of automatic driving vehicle - Google Patents
Power supply topological structure of automatic driving vehicle Download PDFInfo
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Abstract
The utility model relates to the technical field of power supply of automatic driving vehicles, in particular to a power supply topological structure of an automatic driving vehicle, which is arranged in a vehicle body and realizes centralized power supply control to partial electric equipment distributed at different positions on the vehicle body, comprising the following steps: a centralized power supply controller, the centralized power supply controller: the power supply system is provided with a main power supply interface, an auxiliary power supply interface, a plurality of power supply output interfaces and a signal interface IG interface, wherein each power supply output interface is provided with an independent output fuse which is connected with electric equipment; the power utilization state of the electric equipment is transmitted to a centralized power supply controller through a CAN bus; the centralized power supply controller controls the on-off of the corresponding output fuses through the power utilization states of different electric equipment, and the redundant backup power supply design of various sensors and auxiliary equipment required in an automatic driving system is realized. The centralized power supply distribution requirement of the sensors and auxiliary equipment in the automatic driving system is met.
Description
Technical Field
The utility model relates to the technical field of power supply of automatic driving vehicles, in particular to a power supply topological structure of an automatic driving vehicle.
Background
In the automatic driving system, the adopted functional modules are numerous, and common ones are: laser radar module, millimeter wave radar module, combination location module, high definition map module, V2X networking module etc.. The conventional power supply network has various new problems due to the common use of a plurality of modules, on one hand, after the existing vehicle is additionally provided with a self-driving system, the number of related electric appliances is greatly increased, and the line requirements for power supply distribution are increased; secondly, in order to maintain the stability of the automatic driving system, the automatic driving system has higher requirements on power distribution, stability and safety.
As a power supply topology of an automatic driving system, at least a main power supply and a redundant power supply are required to ensure safety and stability of power supply. The accuracy of the automatic driving system to power supply, the stability of voltage and current and the protection requirements are high. The power supply of the intelligent driving system of the L4 level generally needs to meet the function safety level to reach the ASIL-D level. The distribution design of the existing automatic driving system is scattered, so that the power supply topological structure is complicated, the cable transmission is too long, and the cable is too concentrated. The existing power supply topological structure of the automatic driving vehicle with wide applicability is strong in universality, and can adapt to more vehicle types.
Disclosure of Invention
The present utility model aims to overcome at least one of the above drawbacks of the prior art and to provide a power supply topology for an autonomous vehicle for solving the problems of insufficient safety and stability of the existing power supply topology.
The technical scheme adopted by the utility model is that the power supply topological structure of the automatic driving vehicle is arranged in a vehicle body, realizes centralized power supply control to partial electric equipment distributed at different positions on the vehicle body, and comprises the following components: the centralized power supply controller is provided with a main power interface and an auxiliary power interface which are respectively connected with a main power supply and an auxiliary power supply of the automobile, a plurality of power output interfaces which are used for being connected with electric equipment, a signal interface which is used for being connected with a CAN bus of the automobile, an IG interface which is used for being connected with an automobile starting signal, and an independent output fuse which is connected with the electric equipment; the power utilization state of the electric equipment is transmitted to a centralized power supply controller through a CAN bus; the centralized power supply controller controls the on-off of the corresponding output fuse through the power utilization states of different electric equipment.
The main power supply is arranged in an engine cabin in front of the automobile; the auxiliary power supply and the centralized power supply controller are arranged on the inner side of the main control panel in front of the automobile; the main power supply and the auxiliary power supply are connected with the main power supply interface and the auxiliary power supply interface through power supply cables, and the power supply output interface supplies power to each electric equipment through the power transmission cables.
The electric equipment at least comprises: the system comprises a self-driving domain controller, a combined positioning module, a networking module and four laser radars; the self-driving domain controller, the combined positioning module and the network connection module are arranged on the inner side of the main control panel in front of the automobile; the at least four laser radars are respectively arranged at the front side, the rear side, the left side and the right side of the automobile; the power transmission cables of the laser radar at the front side of the automobile are distributed along the engine cabin and penetrate to the inner side of the main control panel to be connected with the power output interface; the power transmission cables of the laser radars on the left side and the right side of the automobile are distributed along metal plates on the two sides of the automobile body, penetrate through the inner side of the main control panel and are connected with the power output interface; the power transmission cables of the laser radar at the rear side of the automobile are distributed along the roof and penetrate to the inner side of the main control panel to be connected with the power output interface.
The main power supply is arranged in an engine cabin in front of the automobile; the auxiliary power supply and the centralized power supply controller are arranged in a trunk behind the automobile; the main power supply and the auxiliary power supply are connected with the main power supply interface and the auxiliary power supply interface through power supply cables, and the power supply output interface supplies power to each electric equipment through the power transmission cables.
The electric equipment at least comprises a self-driving domain controller, a combined positioning module, a networking module and four laser radars; the self-driving domain controller, the combined positioning module and the network connection module are arranged in a trunk behind the automobile; the at least four laser radars are respectively arranged at the front side, the rear side, the left side and the right side of the automobile; the power transmission cables of the laser radar at the front side of the automobile are distributed along the chassis or the roof and penetrate into the trunk to be connected with the power output interface; the power transmission cables of the laser radars on the left side and the right side of the automobile are distributed along metal plates on the two sides of the automobile body and penetrate into the trunk to be connected with a power output interface; the power transmission cable of the laser radar at the rear side of the automobile penetrates into the trunk and is connected with the power output interface; the power supply cables of the main power supply are distributed along the chassis or the roof and penetrate into the trunk to be connected with the main power supply interface.
The main power interface and the auxiliary power interface are respectively provided with a main input fuse and an auxiliary input fuse; the power supply states of the main power supply and the auxiliary power supply are transmitted to the centralized power supply controller through the CAN bus; the centralized power supply controller controls the on-off of the main input fuse and the auxiliary input fuse through the power supply states of the main power supply and the auxiliary power supply so as to realize that the main power supply or the auxiliary power supply selectively supplies power to the electric equipment.
The output fuse, the main input fuse and the auxiliary input fuse are programmable fuses.
The centralized power supply controller comprises at least: a regional power control center for realizing power control and a power distribution unit for power distribution; the main power supply and the auxiliary power supply are connected with the regional power control center and the electric equipment through the power distribution unit; the CAN bus signal interface is connected with the regional power control center; the regional power control center forms a power distribution instruction and controls the power distribution unit to realize independent power supply control of each electric equipment.
The power distribution unit includes: a power multiplexing switch for supplying power to one part of the power output interfaces, a buck-boost converter for supplying power to the other part of the power output interfaces, and a DC-DC converter; the main power supply and the auxiliary power supply are connected with the regional power control center through the power multiplexing switch, the buck-boost converter and the DC-DC converter in sequence.
The regional power control center is a vehicle-standard MCU, and the regional power control center, the output fuse, the power multiplexing switch, the buck-boost converter and the DC-DC converter are integrated on the same integrated circuit board.
Compared with the prior art, the utility model has the beneficial effects that: the power distribution is realized based on the centralized power supply controller, so that the redundant backup power supply design of various sensors and auxiliary equipment required in the automatic driving system is realized on one hand; on the other hand, the centralized power supply distribution requirement of the sensors and auxiliary equipment in the automatic driving system is met, and the development requirement of centralized power supply in the EEA development area of the existing vehicle is met; the high-precision and well-protected power supply is further provided for the sensors and the functional modules in the automatic driving system, so that the replacement and maintenance of the traditional fuse box or fuse are replaced, and the maintenance and replacement are more convenient; the method provides a generalized design scheme for modularization and batch production of the automatic driving system.
Drawings
Fig. 1 is a schematic diagram of a power supply topology structure in the present utility model.
Fig. 2 is a schematic circuit diagram of a power supply topology structure in the present utility model.
Fig. 3 is a schematic circuit diagram of the power supply topology structure applied to a passenger car in the utility model.
Fig. 4 is a schematic circuit diagram of the power supply topology structure applied to a commercial vehicle in the present utility model.
Fig. 5 is a schematic diagram of an actual wiring diagram of the present utility model with the power supply topology applied to a commercial vehicle.
Reference numerals illustrate: a centralized power supply controller 100.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the utility model. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, this embodiment is a power supply topology structure of an automatic driving vehicle, where the power supply topology structure is installed in a vehicle body, and realizes centralized power supply control for part of electric devices distributed at different positions on the vehicle body, and includes: a centralized power supply controller, the centralized power supply controller: the power supply system comprises a main power supply interface and an auxiliary power supply interface which are respectively connected with a main power supply and an auxiliary power supply of an automobile, a plurality of power supply output interfaces which are used for connecting electric equipment, a signal interface which is used for connecting a CAN bus of the automobile, an IG interface which is used for connecting an automobile starting signal, and an independent output fuse which is connected with the electric equipment; the power utilization state of the electric equipment is transmitted to a centralized power supply controller through a CAN bus; the centralized power supply controller controls the on-off of the corresponding output fuse through the power utilization states of different electric equipment.
Through a centralized power supply controller, can integrate holistic power supply, form centralized power supply overall arrangement for holistic power supply stability and harmony improve in the car, and the wiring is simplified. Compared with the traditional design, the vehicle-started IG signal and the signal of the CAN bus are introduced to form an integrated structure, so that the combination between the power supply wiring and the signal transmission is more reasonable. According to the original layout design of the existing vehicle, one-way redundant power supply is provided, the double-power-supply design of the main power supply and the auxiliary power supply is formed, and meanwhile, the independently arranged output fuses are introduced, so that the independence of each electric device is guaranteed, the influence of electric device faults on other devices or power supplies is avoided, the overall safety and stability are guaranteed, the centralized power supply controller is utilized for unified regulation and control, and the quick response is realized.
The main power supply is arranged in an engine cabin in front of the automobile; the auxiliary power supply and the centralized power supply controller are arranged in a trunk behind the automobile; the main power supply and the auxiliary power supply are connected with the main power supply interface and the auxiliary power supply interface through power supply cables, and the power supply output interface supplies power to each electric equipment through the power transmission cables.
As shown in fig. 3, most of existing automatic driving main refitted vehicles are passenger vehicles, on fully considering the original layout design of the existing passenger vehicles, the main power supply is arranged in the engine compartment at the position of the original battery of the existing passenger vehicles, and the auxiliary power supply arranged in the trunk is provided with one more redundant power supply, so that the power supply safety of the passenger vehicles is higher, the balance weight of the vehicle body and the existing vehicle type vacancy are fully considered, and the trunk arranged behind the vehicle is in line with the vehicle type position distribution. The power supply arrangement of the centralized power supply controller is utilized, the power supply distance between the centralized power supply controller and each electric equipment is shortened, and wiring is simplified.
In the implementation and arrangement process, particularly when a passenger car type is modified into an automatic driving vehicle, the main power supply is usually arranged in an engine cabin, particularly can be positioned right in front of a driving position, the auxiliary power supply is arranged in a trunk, and particularly can be positioned on the same side as the main power supply. The centralized power supply controller is arranged in the middle of the trunk and is close to one side of the head of the trunk.
The electric equipment at least comprises a self-driving domain controller, a combined positioning module, a networking module and four laser radars; the self-driving domain controller, the combined positioning module and the network connection module are arranged in a trunk behind the automobile; the at least four laser radars are respectively arranged at the front side, the rear side, the left side and the right side of the automobile; the power transmission cables of the laser radar at the front side of the automobile are distributed along the chassis or the roof and penetrate into the trunk to be connected with the power output interface; the power transmission cables of the laser radars on the left side and the right side of the automobile are distributed along metal plates on the two sides of the automobile body and penetrate into the trunk to be connected with a power output interface; the power transmission cable of the laser radar at the rear side of the automobile penetrates into the trunk and is connected with the power output interface; the power supply cables of the main power supply are distributed along the chassis or the roof and penetrate into the trunk to be connected with the main power supply interface.
Autopilot vehicles are typically retrofitted to existing mass-produced vehicle models, with the core of the retrofitting being by retrofitting the existing vehicle with an autopilot system. The self-driving domain controller, the combined positioning module, the networking module and the laser radar are core components which are required to be equipped with an automatic driving system. Along with the additional installation of equipment, the power supply line of original vehicle usually needs to change, has gone on through direct additional installation's mode in the current many, has neglected the structural feature of specific motorcycle type, and in order to make things convenient for the original wiring passageway of utilization more moreover, leads to original wiring passageway crowded, and the electric line is complicated, is unfavorable for power supply stability and maintenance. Through aiming at the most common vehicle type characteristics of the prior art, the stable and open space of the luggage box is fully utilized, the core component of the automatic driving system is fixed in the luggage box to form good protection of the automatic driving system, and the luggage box is connected with the rear seat of the vehicle and is easy to be distributed to all parts of the vehicle, so that the wiring is convenient.
The front side radar is arranged in the middle of the vehicle head, and the rear side laser radar is arranged in the middle of the rear side bumper. The centralized power supply controller is arranged in the middle of the trunk and is close to one side of the head of the trunk, so that the distance between the centralized power supply controller and the middle of the automobile body can be tensioned as much as possible.
The main power interface and the auxiliary power interface are respectively provided with a main input fuse and an auxiliary input fuse; the power supply states of the main power supply and the auxiliary power supply are transmitted to the centralized power supply controller through the CAN bus; the centralized power supply controller controls the on-off of the main input fuse and the auxiliary input fuse through the power supply states of the main power supply and the auxiliary power supply so as to realize that the main power supply or the auxiliary power supply selectively supplies power to the electric equipment.
By arranging the input fuse at the interface, after the main power supply and the auxiliary power supply are connected to the centralized power supply controller, the detection and protection of the main power supply and the auxiliary power supply can be automatically formed, when the main power supply and the auxiliary power supply fail, the main power supply and the auxiliary power supply can immediately react through the interface of the centralized power supply controller and are disconnected in time, and the damage to the centralized power supply controller is avoided.
The output fuse, the main input fuse and the auxiliary input fuse are programmable fuses.
Programmable fuses are capable of cutting current at extremely fast speeds, have low current operating capability, detect current by measuring voltage across a known resistor, and then cut current when the current exceeds a design limit.
The centralized power supply controller comprises at least: a regional power control center for realizing power control and a power distribution unit for power distribution; the main power supply and the auxiliary power supply are connected with the regional power control center and the electric equipment through the power distribution unit; the CAN bus signal interface is connected with the regional power control center; the regional power control center forms a power distribution instruction and controls the power distribution unit to realize independent power supply control of each electric equipment.
The switching and power supply between the main power supply and the auxiliary power supply can be efficiently realized through the regional power control center and the power distribution unit, so that the power supply between the centralized power supply controller and each electric equipment is optimized.
The power distribution unit includes: a power multiplexing switch for supplying power to one part of the power output interfaces, a buck-boost converter for supplying power to the other part of the power output interfaces, and a DC-DC converter; the main power supply and the auxiliary power supply are connected with the regional power control center through the power multiplexing switch, the buck-boost converter and the DC-DC converter in sequence.
By adopting the power multiplexing switch, on one hand, seamless switching between the main power supply and the auxiliary power supply can be realized, other equipment is prevented from restarting in the process of changing the power supply, and the power supply stability of the system is improved. The buck-boost converter can realize stable voltage regulation, and can increase the adaptability of a power supply and meet the requirement of multi-voltage output in cooperation with the DC-DC converter.
The regional power control center is a vehicle-standard MCU, and the regional power control center, the output fuse, the power multiplexing switch, the buck-boost converter and the DC-DC converter are integrated on the same integrated circuit board.
The integrated design has the advantages that the occupied whole design volume is less, and the safety and stability are improved.
Example 2
The embodiment is a power supply topology structure of an automatic driving vehicle, the power supply topology structure is installed in a vehicle body, and realizes centralized power supply control to partial electric equipment distributed at different positions on the vehicle body, and the power supply topology structure comprises: a centralized power supply controller 100, the centralized power supply controller 100: the automobile power supply system comprises a main power supply interface and an auxiliary power supply interface which are respectively connected with a main power supply and an auxiliary power supply of an automobile, a plurality of power supply output interfaces which are used for connecting electric equipment, a signal interface which is used for connecting a CAN bus of the automobile, an IG interface which is used for connecting an automobile starting signal, and an independent output fuse which is connected with the electric equipment; the power utilization state of the electric equipment is transmitted to the centralized power supply controller 100 through the CAN bus; the centralized power supply controller 100 controls the on-off of the corresponding output fuses according to the power utilization states of different electric equipment.
As shown in fig. 2, the centralized power supply controller 100 forms the core of power supply control, the main power supply forms the main power supply input of the automatic driving system, and a wide voltage input power supply supporting 9V to 36V is adopted; the secondary power supply can form a redundant power supply input of the automatic driving system, and a wide voltage input power supply supporting 9V to 36V is also adopted as the secondary power supply. The signal interface of the CAN bus comprises: and the vehicle CAN signal interface is used for carrying out vehicle CAN signal interaction and the redundant CAN signal interface is used for carrying out redundant CAN signal interaction. The output fuse can be an eFuse chip, a vehicle-standard MCU is arranged in the centralized power supply controller 100, and the eFuse chip is connected with the vehicle-standard MCU in the centralized power supply controller 100. The centralized power supply controller 100 supports interaction of CAN signals and vehicles, and the MCU CAN feed back the working states of all modules through a CAN network and monitor the voltage of the whole vehicle; the redundant CAN function supports two-way CAN communication.
The main power supply is arranged in an engine cabin in front of the automobile; the secondary power supply and the centralized power supply controller 100 are arranged on the inner side of the main control panel in front of the automobile; the main power supply and the auxiliary power supply are connected with the main power supply interface and the auxiliary power supply interface through power supply cables, and the power supply output interface supplies power to each electric equipment through the power transmission cables. As shown in fig. 4, in the existing automatic driving vehicle, a commercial vehicle is one of common retrofit vehicle types. According to the layout design of the prior commercial vehicle, the main power supply is arranged in the engine cabin at the position of the original battery of the prior commercial vehicle, and the auxiliary power supply is arranged on the inner side of the main control panel in front of the vehicle, so that the commercial vehicle is higher in power supply safety due to the fact that one-way redundant power supply is provided, and the centralized power supply controller 100 is arranged on the inner side of the main control panel in front of the vehicle according with the vehicle type position distribution based on the sufficient mounting position of the main control panel on the front side of the commercial vehicle.
The two power supplies are arranged on the inner side of the front main control panel, so that the power supply distance between the two power supplies and each electric equipment is shortened, and wiring is simplified. As shown in fig. 5, in the implementation process, particularly when the commercial vehicle model is modified into an automatic driving vehicle, the main power source is usually in the engine compartment, specifically can be located right in front of the driving position, and the auxiliary power source is located in the main control panel, specifically can be located near the driving position as well, and is located on the same side as the main power source. The centralized power supply controller 100 is disposed in the middle of the main control panel. The electric equipment at least comprises: the system comprises a self-driving domain controller, a combined positioning module, a networking module and four laser radars; the self-driving domain controller, the combined positioning module and the network connection module are arranged on the inner side of the main control panel in front of the automobile; at least four laser radars are respectively arranged at the front side, the rear side, the left side and the right side of the automobile; the power transmission cables of the laser radar on the front side of the automobile are distributed along the engine cabin and penetrate to the inner side of the main control panel to be connected with the power output interface; the power transmission cables of the laser radars on the left side and the right side of the automobile are distributed along the sheet metal on the two sides of the automobile body, penetrate to the inner side of the main control panel and are connected with the power output interface; the power transmission cables of the laser radar at the rear side of the automobile are distributed along the roof and penetrate to the inner side of the main control panel to be connected with the power output interface.
The existing automatic driving vehicles are modified on the existing mass production vehicle types, and the core of the modification is to add an automatic driving system on the existing vehicles. The self-driving domain controller, the combined positioning module, the networking module and the laser radar are core components which are required to be equipped with an automatic driving system. However, with the additional installation of the device, the power supply line of the original vehicle usually needs to be changed, and the existing method is mostly carried out by a direct additional installation mode, so that the power supply line of the vehicle is complex, and the power supply stability and maintenance are not facilitated. The laser radar power transmission cables distributed in the engine compartment are beneficial to reducing the cable length and can be matched with the laser radar arrangement in the front-back and left-right directions. The intelligent control system is particularly suitable for commercial vehicles, and the self-driving domain controller, the combined positioning module and the network connection module are arranged in the main control board, so that the distance between the main control board and the original vehicle control center is shortened, the lengths of a control cable and a power supply cable are shortened, the wiring complexity is reduced, and the response delay caused by long-distance transmission is also reduced.
The laser radars arranged on the left side and the right side are arranged above the front wheel, the front side radar is arranged in the middle of the vehicle head, and the rear side laser radar is arranged in the middle of the rear side bumper. The centralized power supply controller 100 is disposed in the middle of the main control board, and can be disposed below the copilot. The cross cable is connected with the cross cable of the whole vehicle, such as a power supply signal, an IG signal, a CAN signal and the like, through a chassis wire harness, and the cross cable is generally arranged below the copilot instrument. The remaining power supply bundles extend along the B-pillar of the body frame to the roof, partially to the roof of the head, partially along the roof to the tail, and are associated with a web module positioned and V2X at the middle branch, which can be in particular a V2X antenna module. ADU is self-driving domain controller, IMU is combination positioning module, V2X is V2X networking module, LIDAR is laser radar.
The main power interface and the auxiliary power interface are respectively provided with a main input fuse and an auxiliary input fuse; the power supply states of the main power supply and the auxiliary power supply are transmitted to the centralized power supply controller 100 through the CAN bus; the centralized power supply controller 100 controls the on-off of the main input fuse and the auxiliary input fuse according to the power supply states of the main power supply and the auxiliary power supply so as to realize that the main power supply or the auxiliary power supply selectively supplies power to the electric equipment. The main input fuse and the auxiliary input fuse can be eFuse chips, and the main power interface and the auxiliary power interface are directly protected, so that control and protection integration are realized, and the size is reduced. The output fuse, the main input fuse and the auxiliary input fuse all adopt programmable fuses. The power output of each path of eFuse is supported, and the power supply voltage precision of power supply equipment is ensured; the formed multipath power supply distribution is that a module designs a single-path self-contained eFuse, the overvoltage protection requirement of the module is met, the normal operation of other electric equipment is not affected by single-path faults, the faults are fed back through an MCU, and the eFuse can be recovered after the faults are eliminated.
The centralized power supply controller 100 includes at least: a regional power control center for realizing power control and a power distribution unit for power distribution; the main power supply and the auxiliary power supply are connected with the regional power control center and the electric equipment through the power distribution unit; the CAN bus signal interface is connected with the regional power control center; the regional power control center forms a power distribution instruction and controls the power distribution unit to realize independent power supply control of each electric equipment. The power distribution unit includes: a power multiplexing switch for supplying power to one part of the power output interfaces, a buck-boost converter for supplying power to the other part of the power output interfaces, and a DC-DC converter; the main power supply and the auxiliary power supply are connected with the regional power control center through the power multiplexing switch, the buck-boost converter and the DC-DC converter in sequence. The buck-boost converter body can be a 12V regulated output device and the DC-DC converter body can be a 3.3V DC regulated output device.
The DC-DC converter can be provided with a module, and can be used for stabilizing the input voltage and outputting the stabilized input voltage, so that the DC-DC converter can be expanded to support 12V or 24V. The regional power control center is a vehicle-standard MCU, and the regional power control center, the output fuse, the power multiplexing switch, the buck-boost converter and the DC-DC converter are integrated on the same integrated circuit board. Specifically, the centralized power supply controller 100 is disposed in a box body, the main power supply interface, the auxiliary power supply interface, the multiple power supply output interfaces, the signal interface and the IG interface form a unified socket interface on the box body, the box body is further provided with a vehicle-mounted ethernet interface connected with the centralized power supply controller 100, and the box body is fixed on the main control board through screws. The centralized power supply controller 100 is packaged in a box body to help form the protection of the vehicle gauge, meanwhile, the centralized power supply controller 100 is convenient to fix, the influence of vibration and impact on the centralized power supply controller 100 caused in the running process of a vehicle is reduced, and the centralized power supply controller 100 is convenient to wire at one side in a unified arrangement mode, so that subsequent wiring and arrangement are convenient. The cross section of the box body is in a right trapezoid shape, and the row socket and the vehicle-mounted Ethernet interface are arranged on one side of the right-angle side of the box body.
It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and are not intended to limit the present utility model to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present utility model should be included in the protection scope of the claims of the present utility model.
Claims (10)
1. The utility model provides a power supply topology structure of autopilot vehicle, power supply topology structure installs in the automobile body, realizes centralized power supply control to the partial consumer that distributes in different positions on the automobile body, includes: a centralized power supply controller, the centralized power supply controller:
a main power interface and a secondary power interface which are respectively connected with a main power and a secondary power of the automobile are arranged,
a plurality of power output interfaces for connecting the electric equipment are arranged,
a signal interface for connecting to the CAN bus of the motor vehicle is provided,
an IG interface for connecting an automobile start signal is provided,
it is characterized in that the method comprises the steps of,
each power output interface is provided with an independent output fuse which is connected with electric equipment;
the power utilization state of the electric equipment is transmitted to a centralized power supply controller through a CAN bus;
the centralized power supply controller controls the on-off of the corresponding output fuse through the power utilization states of different electric equipment.
2. The power supply topology of an autonomous vehicle of claim 1, wherein,
the main power supply is arranged in an engine cabin in front of the automobile;
the auxiliary power supply and the centralized power supply controller are arranged on the inner side of the main control panel in front of the automobile; the main power supply and the auxiliary power supply are connected with the main power supply interface and the auxiliary power supply interface through power supply cables, and the power supply output interface supplies power to each electric equipment through the power transmission cables.
3. The power supply topology of an autonomous vehicle of claim 2, wherein,
the electric equipment at least comprises: the system comprises a self-driving domain controller, a combined positioning module, a networking module and four laser radars;
the self-driving domain controller, the combined positioning module and the network connection module are arranged on the inner side of the main control panel in front of the automobile;
the at least four laser radars are respectively arranged at the front side, the rear side, the left side and the right side of the automobile;
the power transmission cables of the laser radar at the front side of the automobile are distributed along the engine cabin and penetrate to the inner side of the main control panel to be connected with the power output interface;
the power transmission cables of the laser radars on the left side and the right side of the automobile are distributed along metal plates on the two sides of the automobile body, penetrate through the inner side of the main control panel and are connected with the power output interface;
the power transmission cables of the laser radar at the rear side of the automobile are distributed along the roof and penetrate to the inner side of the main control panel to be connected with the power output interface.
4. The power supply topology of an autonomous vehicle of claim 1, wherein,
the main power supply is arranged in an engine cabin in front of the automobile;
the auxiliary power supply and the centralized power supply controller are arranged in a trunk behind the automobile;
the main power supply and the auxiliary power supply are connected with the main power supply interface and the auxiliary power supply interface through power supply cables, and the power supply output interface supplies power to each electric equipment through the power transmission cables.
5. The power supply topology of an autonomous vehicle of claim 4, wherein,
the electric equipment at least comprises a self-driving domain controller, a combined positioning module, a networking module and four laser radars;
the self-driving domain controller, the combined positioning module and the network connection module are arranged in a trunk behind the automobile;
the at least four laser radars are respectively arranged at the front side, the rear side, the left side and the right side of the automobile;
the power transmission cables of the laser radar at the front side of the automobile are distributed along the chassis or the roof and penetrate into the trunk to be connected with the power output interface; the power transmission cables of the laser radars on the left side and the right side of the automobile are distributed along metal plates on the two sides of the automobile body and penetrate into the trunk to be connected with a power output interface;
the power transmission cable of the laser radar at the rear side of the automobile penetrates into the trunk and is connected with the power output interface;
the power supply cables of the main power supply are distributed along the chassis or the roof and penetrate into the trunk to be connected with the main power supply interface.
6. The power supply topology of an autonomous vehicle of any of claims 1-5, wherein,
the main power interface and the auxiliary power interface are respectively provided with a main input fuse and an auxiliary input fuse;
the power supply states of the main power supply and the auxiliary power supply are transmitted to the centralized power supply controller through the CAN bus;
the centralized power supply controller controls the on-off of the main input fuse and the auxiliary input fuse through the power supply states of the main power supply and the auxiliary power supply so as to realize that the main power supply or the auxiliary power supply selectively supplies power to the electric equipment.
7. The power supply topology of an autonomous vehicle of claim 6, wherein said output fuse, primary input fuse, and secondary input fuse all employ programmable fuses.
8. The power supply topology of an autonomous vehicle of claim 6, wherein,
the centralized power supply controller comprises at least: a regional power control center for realizing power control and a power distribution unit for power distribution;
the main power supply and the auxiliary power supply are connected with the regional power control center and the electric equipment through the power distribution unit;
the CAN bus signal interface is connected with the regional power control center;
the regional power control center forms a power distribution instruction and controls the power distribution unit to realize independent power supply control of each electric equipment.
9. The power supply topology of an autonomous vehicle of claim 8, wherein,
the power distribution unit includes:
a power multiplexing switch for supplying power to a part of the power output interfaces,
Step-up and step-down converter for supplying power to other part of power output interface,
A DC-DC converter;
the main power supply and the auxiliary power supply are connected with the regional power control center through the power multiplexing switch, the buck-boost converter and the DC-DC converter in sequence.
10. The power supply topology of an autonomous vehicle of claim 9, wherein said regional power control center is a vehicle-standard MCU, and said regional power control center, output fuses, power multiplexing switches, buck-boost converter, and DC-DC converter are integrated on the same integrated circuit board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320149551.9U CN219236957U (en) | 2023-02-02 | 2023-02-02 | Power supply topological structure of automatic driving vehicle |
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| CN202320149551.9U CN219236957U (en) | 2023-02-02 | 2023-02-02 | Power supply topological structure of automatic driving vehicle |
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