CN112606690A - Vehicle power distribution method and device, vehicle control system and vehicle - Google Patents

Vehicle power distribution method and device, vehicle control system and vehicle Download PDF

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Publication number
CN112606690A
CN112606690A CN202011401031.XA CN202011401031A CN112606690A CN 112606690 A CN112606690 A CN 112606690A CN 202011401031 A CN202011401031 A CN 202011401031A CN 112606690 A CN112606690 A CN 112606690A
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power
vehicle
electric load
electric
loads
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CN202011401031.XA
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Chinese (zh)
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李任霞
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Beijing CHJ Automobile Technology Co Ltd
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Beijing CHJ Automobile Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The embodiment of the disclosure discloses a vehicle power distribution method and device, a vehicle control system and a vehicle, relates to the technical field of vehicle control, and mainly aims to reasonably distribute power for each electric load in the vehicle according to user requirements. The main technical scheme of the embodiment of the disclosure comprises the following steps: acquiring the sum of the required power of each electric load in the vehicle and the total discharge power of the vehicle; if the total discharge power is smaller than the sum of the required power of each electric load, performing priority ranking on each electric load according to the type of each electric load and the currently set ranking requirement, wherein the ranking requirement is used for limiting what type of electric load the user expects to distribute power preferentially; distributing power to each of the electrical loads based on the priority ranking, the required power of each of the electrical loads, and the total discharge power.

Description

Vehicle power distribution method and device, vehicle control system and vehicle
Technical Field
The embodiment of the disclosure relates to the technical field of vehicle control, in particular to a vehicle power distribution method and device, a vehicle control system and a vehicle.
Background
With the progress of society, new energy vehicles gradually become one of the main transportation means for people to go out. In new energy vehicles such as pure electric vehicles and extended range vehicles, high-voltage electric loads such as motors, vehicle-mounted voltage transformation units, heating devices, air conditioning compressors and the like are generally installed, so that the vehicles can run by using the high-voltage electric loads.
In the case of a vehicle in which a plurality of high-voltage electrical loads are used, the power demand may be present simultaneously, and in this case, the total discharge power of the vehicle may not satisfy the power demand of the high-voltage electrical loads simultaneously. At present, in order to ensure that power can be distributed to high-voltage electric loads, a vehicle generally distributes power to each high-voltage electric load according to a fixed priority order of the high-voltage electric loads. In the existing distribution method, because the priority of each high-voltage electric load is fixed, if the priority of the high-voltage electric load required by a user is back, power cannot be obtained, so that the high-voltage electric load cannot work, and the operation of a vehicle cannot meet the requirement of the user.
Disclosure of Invention
In view of this, embodiments of the present disclosure provide a vehicle power distribution method and apparatus, a vehicle control system, and a vehicle, and mainly aim to reasonably distribute power to each electrical load in the vehicle according to user requirements. The main technical scheme comprises:
in a first aspect, embodiments of the present disclosure provide a vehicle power distribution method, the method including:
acquiring the sum of the required power of each electric load in a vehicle and the total discharge power of the vehicle;
if the total discharge power is smaller than the sum of the required power of each electric load, performing priority ranking on each electric load according to the type of each electric load and the currently set ranking requirement, wherein the ranking requirement is used for limiting what type of electric load the user expects to distribute power preferentially;
distributing power to each of the electrical loads based on the priority ranking, the required power of each of the electrical loads, and the total discharge power.
In a second aspect, embodiments of the present disclosure provide a vehicle power distribution apparatus, the apparatus including:
an acquisition unit configured to acquire a sum of required powers of electric loads in a vehicle and a total discharge power of the vehicle;
the sorting unit is used for sorting the priority of each electric load according to the type of each electric load and a currently set sorting requirement if the total discharge power is smaller than the sum of the required power of each electric load, wherein the sorting requirement is used for limiting what type of electric load the user expects to preferentially distribute power;
and the distribution unit is used for distributing power to each electric load based on the priority ranking, the required power of each electric load and the total discharge power.
In a third aspect, an embodiment of the present disclosure provides a vehicle control system including:
the vehicle control system includes: a controller; the controller, when operated, performs the vehicle power distribution method of the first aspect.
In a fourth aspect, embodiments of the present disclosure provide a vehicle comprising: a power battery, N power loads, and the vehicle control system of the third aspect, wherein N is greater than or equal to 1;
the power battery is used for distributing power to each electric load based on a power distribution strategy of the vehicle control system for each electric load.
According to the vehicle power distribution method and device, the vehicle control system and the vehicle, when the total discharge power is determined to be smaller than the sum of the required power of each electric load, the electric loads can be subjected to priority ranking according to the type of each electric load and the currently set ranking requirement. And distributing power for each electric load based on the priority ranking, the required power of each electric load and the total discharge power. The priority ranking used in the priority ranking is used for limiting what type of electric load the user expects to preferentially distribute power, so that the obtained priority ranking meets the expectation of the user, power can be reasonably distributed to all electric loads in the vehicle to the maximum extent under the requirement of the user, and the running state of the vehicle meets the expectation of the user.
The foregoing description is only an overview of the embodiments of the present disclosure, and in order to make the technical means of the embodiments of the present disclosure more clearly understood, the embodiments of the present disclosure may be implemented in accordance with the content of the description, and in order to make the foregoing and other objects, features, and advantages of the embodiments of the present disclosure more clearly understood, the following detailed description of the embodiments of the present disclosure is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the embodiments of the present disclosure. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 illustrates a flow chart of a vehicle power distribution method provided by an embodiment of the present disclosure;
FIG. 2 illustrates a flow chart of another vehicle power distribution method provided by embodiments of the present disclosure;
fig. 3 shows a block diagram of a vehicle power distribution apparatus provided by an embodiment of the present disclosure;
FIG. 4 is a block diagram illustrating another vehicle power distribution apparatus provided by an embodiment of the present disclosure;
FIG. 5 illustrates a block diagram of the components of a vehicle control system provided by an embodiment of the present disclosure;
fig. 6 shows a block diagram of a vehicle according to an embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
At present, new energy vehicles such as pure electric vehicles and extended range vehicles are generally provided with high-voltage electric loads such as motors, vehicle-mounted voltage transformation units, heating devices, air conditioning compressors and the like, so that the high-voltage electric loads are utilized to operate the vehicles and perform vehicle functions such as defrosting and defogging. Because the power demand of the electric load in the vehicle may not be met by the power component (the power component of the pure electric vehicle is the power battery, and the power component of the range extended vehicle is the power battery and the range extender) under the influence of the output power of the power component during the operation of the vehicle, the output power of the power component needs to be distributed. The embodiment of the disclosure is provided for reasonably distributing power to each electric load of a vehicle according to user demands.
In a first aspect, an embodiment of the present disclosure provides a vehicle power distribution method, as shown in fig. 1, the method mainly includes:
101. and acquiring the sum of the required power of each electric load in the vehicle and the total discharge power of the vehicle, and executing step 102 or step 103.
In practical applications, the total discharge power of the vehicle is related to the type of the vehicle, which specifically includes the following two cases: first, when the vehicle is a pure electric vehicle, the total discharge power of the vehicle is the current maximum discharge power of the vehicle power battery. And secondly, when the vehicle is a hybrid vehicle provided with the range extender, the total discharge power of the vehicle consists of the current maximum discharge power of the vehicle power battery and the current generated power of the range extender. If the current range extender is not started, the current generated power of the range extender is 0. The vehicle, no matter what kind of vehicle is described above, the total discharge power of the vehicle obtained is the current total discharge power of the vehicle.
In practical applications, the electrical loads in the vehicle are vehicle high-voltage electrical loads that can operate the vehicle and perform vehicle functions such as defrosting and defogging. The specific type of the electrical load is not specifically limited in this embodiment, and may be determined according to the service requirement. For example, the electrical load may include at least one of: the device comprises a motor, a vehicle-mounted voltage transformation unit (DCDC), a heating device and an air conditioner compressor. Wherein the electric machine is used for driving the vehicle. The vehicle-mounted voltage transformation unit is a converter for converting a high-voltage direct-current power supply into a low-voltage direct-current power supply and is used for converting high voltage into low voltage. The heating device is used for heating the passenger compartment and the battery. The air conditioner compressor is a cooling and heating component, and can be used for heating and cooling a passenger compartment and cooling a vehicle battery.
When each electric load works, the required power exists, and the required power is the expected power required by the current work of the electric load. In order to determine whether the total discharge power of the vehicle can satisfy the power demand of each electrical load, it is necessary to calculate the sum of the demanded powers of each electrical load, to compare the sum of the demanded powers of each electrical load with the total discharge power, and to perform a corresponding operation according to the comparison result between the total discharge power and the sum of the demanded powers of each electrical load.
102. And if the total discharge power is not less than the sum of the required powers of the electric loads, distributing the required powers of the electric loads based on the total discharge power.
If the total discharge power is not less than the sum of the required powers of the electric loads, it is indicated that the total discharge power of the vehicle can completely meet the power requirements of the electric loads, sufficient power can be distributed to the electric loads according to the required powers of the electric loads, and at this time, the respective required powers of the electric loads can be directly distributed.
Illustratively, the total discharge power is 100KW, and the required power of each electrical load is: the required power of the motor is 50KW, the required power of the heating device is 20KW, the required power of the air conditioner compressor is 30KW, the power distributed to the motor based on the total discharge power is 50KW, the power distributed to the heating device is 20KW, and the power distributed to the air conditioner compressor is 30 KW.
103. And if the total discharge power is smaller than the sum of the required power of each electric load, performing priority ranking on each electric load according to the type of each electric load and the currently set ranking requirement, wherein the ranking requirement is used for limiting what type of electric load the user expects to distribute power preferentially.
If the total discharge power of the vehicle is smaller than the sum of the required powers of the electric loads, which indicates that the total discharge power of the vehicle cannot simultaneously meet the power requirements of the electric loads, priority sorting needs to be performed on the electric loads at this time, so as to distribute power to the electric loads according to the priority sorting.
In order to enable the power distribution of each electric load to meet the requirements of users, the electric loads are subjected to priority ranking according to the ranking requirements set by the users, so that the running state of the vehicle can meet the wishes of the users to the maximum after the power is distributed to the electric loads according to the priority ranking.
The following describes the setting of the sorting requirement, and the setting process at least includes the following steps:
first, in the use of the vehicle, if a sorting requirement input by a user is received, the sorting requirement input by the user is set as a currently set sorting requirement.
The manner in which the user inputs the ordering requirement is not specifically limited in this embodiment, and may be determined according to the actual service requirement. The input mode of the sorting requirement can be a voice mode, a specific gesture mode, a mode of clicking a specific button or a text input mode. Illustratively, the user enters his or her ranking requirements using speech while using the vehicle.
Secondly, in the use of the vehicle, whether a sorting requirement input by a user is received in the current vehicle use period is judged, and if the sorting requirement input by the user is not received, the sorting requirement of the previous vehicle period adjacent to the current vehicle use period is determined as the currently set sorting requirement.
Thirdly, in the use of the vehicle, the sorting requirement input by the user is not received from the time of vehicle delivery, and the sorting requirement preset in the vehicle by a manufacturer when the vehicle is delivered is determined as the currently set sorting requirement.
The sequencing requirements described in this embodiment are used to define what type of electrical load is desired by the user to allocate power preferentially. The type of the power load comprises a safety power load and a comfort power load, wherein the safety power load is used for ensuring the running of the vehicle, and the comfort power load is used for ensuring the comfort of personnel in the vehicle when the vehicle runs. Illustratively, the motor is a safety electrical load and the heating device is a comfort electrical load.
The purpose of setting the sorting requirement in this embodiment is to give the user the right to set the rule of power distribution of the electrical load, so that the operating state of the electrical load of the vehicle meets the requirement of the user. For example, if the user desires the comfort electrical load to allocate power preferentially, the currently set sorting requirement is used to define the user desires the comfort electrical load to allocate power preferentially.
The following describes a process of performing a memorial ranking on the electric loads according to the types of the electric loads and the currently set ranking requirement, and the process mainly includes: and judging whether a target electric load exists in each electric load, wherein the type of the target electric load is the same as the type defined by the sequencing requirement. If the target electrical load exists in the electrical loads, the priority of the target electrical load is set higher than that of other electrical loads in the electrical loads so that the target electrical load can be preferentially allocated with sufficient power, wherein the other electrical loads are electrical loads other than the target electrical load. If the target electric load is not present among the electric loads, the priorities of the electric loads are set to be the same so that the electric loads can be distributed with power.
Based on the comparison result between each electricity load and the type defined in the sorting requirement, the finally obtained priority sorting at least comprises the following types:
first, the priority of each electrical load in the priority ranking is the same, in this case, each electrical load is different from or the same as the type defined by the currently set ranking requirement.
Second, the priority of the target electrical load in the priority ranking is higher than that of other electrical loads in each electrical load, wherein the other electrical loads are non-target electrical loads in each electrical load.
And thirdly, in the priority ranking, the priority of the target electric loads is higher than that of the non-target electric loads in the electric loads, the priority ranking exists among the target electric loads according to the request types corresponding to the target electric loads, and the priority of the electric load with the lowest priority in the target electric loads is higher than that of the non-target electric loads in the electric loads.
104. Distributing power to each of the electrical loads based on the priority ranking, the required power of each of the electrical loads, and the total discharge power.
When distributing power for each electric load, the method for distributing power is related to the priority ranking, the required power of each electric load and the total discharge power, and the distribution method at least comprises the following steps:
first, the priority of each electric load in the priority ranking is the same, and each electric load is different from or the same as the type defined by the currently set ranking requirement.
In this case, when distributing power, it is necessary to determine a ratio between the power demands of the electric loads and distribute the total discharge power to the electric powers in accordance with the ratio. The distribution formula can ensure that each electric load can be distributed with power, and each electric load can be in a working state according to the power distributed by the electric load.
Second, the priority of the target electric loads in the priority ranking is higher than the priority of the non-target electric loads in the electric loads, and the priorities of the target electric loads are the same.
In this case, when distributing the power, it is first determined whether the required total discharge power is larger than the sum of the required powers of the target electric loads.
If the total discharge power is not greater than the sum of the demanded powers of the target electric loads, the total discharge power is used for distributing power to the target electric loads according to the proportion of the demanded powers of the target electric loads, and other electric loads in the priority ranking cannot be distributed with power.
And if the total discharge power is larger than the sum of the required powers of the target electric loads, distributing the required powers corresponding to the target electric loads by using the total discharge power. And distributing power for other electric loads by distributing the remaining total discharge power according to the proportion of the required power of other electric loads in the priority sequence.
And thirdly, in the priority ranking, the priority of the target electric loads is higher than that of the non-target electric loads in the electric loads, the priority ranking exists among the target electric loads according to the request types corresponding to the target electric loads, and the priority of the electric load with the lowest priority in the target electric loads is higher than that of the non-target electric loads in the electric loads.
In this case, when distributing the power, it is first determined whether the required total discharge power is larger than the sum of the required powers of the target electric loads.
And if the total discharge power is not greater than the sum of the required power of each target electric load, determining that the total discharge power can meet the required power of several target electric loads according to the priority order, and extracting the target electric loads capable of being met. And distributing the required power for the extracted target electric load by using the total discharge power. If the distributed total discharging power is remained, distributing power for each target electric load by using the remained total discharging power according to the proportion of the demand power of each target electric load which is not extracted, and other electric loads in the priority sequence cannot be distributed with power.
And if the total discharge power is larger than the sum of the required powers of the target electric loads, distributing the required powers corresponding to the target electric loads by using the total discharge power. And distributing power for other electric loads by distributing the remaining total discharge power according to the proportion of the required power of other electric loads in the priority sequence.
According to the vehicle power distribution method provided by the embodiment of the disclosure, when the total discharge power is determined to be smaller than the sum of the required power of each electric load, the electric loads can be prioritized according to the type of each electric load and the currently set ranking requirement. And distributing power for each electric load based on the priority ranking, the required power of each electric load and the total discharge power. The priority ranking used in the priority ranking is used for limiting what type of electric load the user expects to preferentially distribute power, so that the obtained priority ranking meets the expectation of the user, power can be reasonably distributed to all electric loads in the vehicle to the maximum extent under the requirement of the user, and the running state of the vehicle meets the expectation of the user.
In a second aspect, according to the method of the first aspect, another embodiment of the present disclosure further provides a vehicle power distribution method, as shown in fig. 2, the method mainly includes:
201. and acquiring the sum of the required power of each electric load in the vehicle and the total discharge power of the vehicle.
202. Judging whether the total discharge power is smaller than the sum of the required power of each electric load, if so, executing step 204; otherwise, step 203 is executed.
If the total discharge power is not less than the sum of the required powers of the electric loads, it is indicated that the total discharge power of the vehicle can completely meet the power requirements of the electric loads, and sufficient power can be distributed to the electric loads according to the required powers of the electric loads. At this time, the required power of each power consumer is directly allocated to each power consumer, and 203 is executed.
If the total discharge power of the vehicle is smaller than the sum of the required powers of the electrical loads, which indicates that the total discharge power of the vehicle cannot simultaneously satisfy the power requirements of the electrical loads, priority ranking needs to be performed on the electrical loads at this time, so as to allocate power to the electrical loads according to the priority ranking, and step 204 is executed.
203. And distributing the required power required by each electric load for each electric load based on the total discharge power, and ending the current process.
204. Judging whether the specific type of electric load exists in each electric load; if so, execute 205; otherwise, 207 is performed.
In practical applications, certain types of electric loads exist in a vehicle, and if the electric loads cannot distribute power timely in certain specific situations, the vehicle may be disabled, so that when power is distributed to each electric load, it is required to first determine whether the electric loads of the certain types exist in the electric loads.
The specific type of electrical load is related to the type of vehicle. For example, in a pure electric vehicle and a range-extended vehicle, the vehicle-mounted voltage transformation unit is a specific type of power load, which supplies power to a low-voltage power supply of the whole vehicle, and if the electric quantity of a storage battery corresponding to the low-voltage power supply of the whole vehicle is too low, the vehicle cannot be guaranteed to run normally. In the range-extending vehicle, the range-extending device is a specific type of electric load, and if the range-extending device needs to be started and the range-extending device does not have enough power to start, the vehicle may not run normally.
If it is determined that the specific type of electric load exists among the electric loads, it is further determined whether to preferentially allocate power to the specific type of electric load in order to ensure normal operation of the vehicle, and step 205 is executed.
If it is determined that there is no specific type of power consumption load for each power consumption load, the power consumption loads are prioritized directly according to the type of the power consumption load and the currently set ranking requirement, so step 207 is executed.
205. If the specific type of electric load exists in the electric loads, determining whether the priority of the specific type of electric load is set to be the highest; if so, execute 206; otherwise, 207 is performed.
If it is determined that a specific type of electric load is present among the electric loads, it is necessary to further determine whether or not the specific type of electric load is set with the highest priority in order not to affect normal use of the vehicle. The specific process of determining whether to set the highest priority of the specific type of electric loads is described in detail below in relation to the specific type of electric loads:
the specific process of determining whether to set the highest priority of the specific type of electric load is as follows: and judging whether the difference value between the total discharge power and the actual power of the vehicle power battery is smaller than a preset difference value. If the difference between the total discharge power and the actual power of the vehicle power battery is smaller than the preset difference, it indicates that the vehicle power battery cannot support the operation of the vehicle if the range extender cannot be started in time, and in addition, it also indicates that the over-discharge of the vehicle power battery can be caused when the range extender is started if the power cannot be distributed to the range extender in time at the moment. In conclusion, the range extender needs to be set to have the highest priority, and the range extender needs to be started in time to ensure the normal running of the vehicle. If the difference between the total discharge power and the actual power of the vehicle power battery is not smaller than the preset difference, the vehicle power battery can support the operation of the vehicle, and the highest priority of the range extender is not required to be set.
Secondly, the specific type of the electric load is an on-board voltage transformation unit, and the specific process of determining whether the specific type of the electric load is set with the highest priority is as follows: determining whether a charge of a battery in the vehicle is greater than a charge threshold, wherein the battery distributes demanded power to the on-board voltage transformation unit. If the electric quantity of the storage battery in the vehicle is determined to be larger than the electric quantity threshold value, the electric quantity in the storage battery is enough for normal low-voltage electricity utilization of the whole vehicle, and the highest priority of the vehicle-mounted voltage transformation unit is not required to be set. If the electric quantity of the storage battery in the vehicle is determined to be not greater than the electric quantity threshold value, the electric quantity in the storage battery is insufficient and is not enough for normal low-voltage electricity utilization of the whole vehicle, and the priority of the vehicle-mounted voltage transformation unit needs to be set to be the highest so as to enable the low-voltage transformation unit to supply power to the storage battery in time.
206. The priority of setting a specific type of electric load is highest.
The priority of the specific type of electric load is set to be highest so as to preferentially distribute power to the specific type of electric load, so that the specific type of electric load can work based on the power acquired by the specific type of electric load in time, and normal operation of the vehicle is guaranteed.
After the priority of the specific type of electric load is set to be the highest, the remaining electric loads still need to be prioritized, so that after the specific type of electric load is allocated to the corresponding required power, the remaining total discharge power still can allocate power to the remaining electric loads based on the priority ranking of the remaining electric loads. Therefore, after step 206, step 207 still needs to be executed, except that the electric loads with the highest priority levels that have been set are not included in the electric loads in step 207 executed after step 206.
207. Judging whether a target electric load exists in each electric load, wherein the type of the target electric load is the same as the type defined by the sequencing requirement; if so, perform 208 or 209; otherwise, 210 is performed.
If it is determined that the target electrical load is present among the electrical loads, indicating that the electrical load requiring the power to be preferentially allocated by the user is present among the electrical loads, step 208 or 209 is executed.
If it is determined that the target electrical load does not exist in the electrical loads, indicating that the electrical load to which the user desires to preferentially allocate power does not exist in the electrical loads, step 210 is executed.
208. If each electric load includes both the target electric load and another electric load, the priority of the target electric load is set higher than that of the other electric loads in each electric load, and step 211 is executed.
In practical applications, the method for setting the priority of the target electrical load higher than that of other electrical loads in each electrical load at least includes the following steps:
first, the target electric loads are set to have the same priority, the other electric loads are set to have the same priority, and the target electric loads have a higher priority than the other electric loads.
Secondly, if the number of the target electric loads is more than one, determining the request type corresponding to each target electric load; determining the priority of each target electric load based on the request type corresponding to each target electric load; and setting the priority of the electric load with the lowest priority in the target electric loads to be higher than that of other electric loads.
Specifically, the request type corresponding to the target electrical load is not specifically limited in this embodiment, and may be determined according to a service requirement. Illustratively, the request category includes at least one of: a defrosting and demisting request, a battery cooling request, a battery heating request, an air conditioner cooling or heating request and a seat heating request.
Specifically, each request type may preset a limited priority, and then the target electrical loads corresponding to each request type are prioritized according to the set priority. Illustratively, the priority of each request category is in the order from high to low: a defrosting and demisting request, a battery cooling request, a battery heating request, an air conditioner cooling or heating request and a seat heating request.
209. If only the target electrical loads are included in the electrical loads, the priorities of the electrical loads are set to be the same, and then 211 is executed.
210. If the target electric load does not exist in the electric loads, setting the priority of the electric loads to be the same, and executing 211.
If the target electric load does not exist in the electric loads, the electric loads which are expected to be preferentially distributed by a user do not exist in the electric loads, and the priority of the electric loads is set to be the same, so that each electric load can be distributed to the power.
211. Distributing power for each of the electrical loads based on the prioritization and the demanded power of each of the electrical loads.
The process of distributing power for each electric load has a direct relation with the priority ranking, and specifically includes the following steps:
first, the priority of each electric load in the priority ranking is the same, and each electric load is different from or the same as the type defined by the currently set ranking requirement.
In this case, when distributing power, it is necessary to determine a ratio between the power demands of the electric loads and distribute the total discharge power to the electric powers in accordance with the ratio. The distribution formula can comprise that each electric load can be distributed with power, and each electric load is ensured to be in a working state according to the power distributed to the electric load.
Second, the priority of the target electrical loads in the priority ranking is higher than that of the other electrical loads in the electrical loads, and the priorities of the target electrical loads are the same.
In this case, when distributing the power, it is first determined whether the required total discharge power is larger than the sum of the required powers of the target electric loads.
If the total discharge power is not greater than the sum of the demanded powers of the target electric loads, the total discharge power is used for distributing power to the target electric loads according to the proportion of the demanded powers of the target electric loads, and other electric loads in the priority ranking cannot be distributed with power.
And if the total discharge power is larger than the sum of the required powers of the target electric loads, distributing the required powers corresponding to the target electric loads by using the total discharge power. And distributing power for other electric loads by distributing the remaining total discharge power according to the proportion of the required power of other electric loads in the priority sequence.
And thirdly, in the priority ranking, the priority of the target electric loads is higher than that of the non-target electric loads in the electric loads, the priority ranking exists among the target electric loads according to the request types corresponding to the target electric loads, and the priority of the electric load with the lowest priority in the target electric loads is higher than that of the non-target electric loads in the electric loads.
In this case, when distributing the power, it is first determined whether the required total discharge power is larger than the sum of the required powers of the target electric loads.
And if the total discharge power is not greater than the sum of the required power of the target electric loads, determining that the total discharge power can meet the required power of the target electric loads according to the priority order, and extracting the target electric loads capable of being met. And distributing the required power for the extracted target electric load by using the total discharge power. If the distributed total discharging power is remained, distributing power for each target electric load by using the remained total discharging power according to the proportion of the demand power of each target load which is not extracted, and other electric loads in the priority sequence cannot be distributed with power.
And if the total discharge power is larger than the sum of the required powers of the target electric loads, distributing the required powers corresponding to the target electric loads by using the total discharge power. And distributing power for other electric loads by distributing the remaining total discharge power according to the proportion of the required power of other electric loads in the priority sequence.
Fourth, in the priority ranking, the specific type of electric load has the highest priority, and the non-specific type of electric load in each electric load has any one of the first three priorities.
And if the total discharge power is greater than the required power of the specific type of electric load, distributing the corresponding required power for the specific type of electric load, sequencing the distributed rest part according to the priority of the non-specific type of electric load in each electric load, and performing power distribution by adopting the corresponding method of the three methods.
If the total discharge power is not greater than the required power of the specific type of electrical loads, the total discharge power is entirely distributed to the electrical loads so that the electrical loads can operate, and the electrical loads of non-specific types of electrical loads cannot be distributed to the power.
In a third aspect, another embodiment of the present disclosure also provides a vehicle power distribution apparatus according to the method shown in fig. 1 or fig. 2, as shown in fig. 3, the apparatus mainly including:
an acquisition unit 31 for acquiring a sum of required powers of electric loads in the vehicle and a total discharge power of the vehicle;
a sorting unit 32, configured to, if the total discharge power is smaller than a sum of demanded powers of the electrical loads, perform priority sorting on the electrical loads according to types of the electrical loads and a currently set sorting demand, where the sorting demand is used to define what type of electrical loads a user desires to preferentially allocate power;
an allocating unit 33, configured to allocate power to each of the electrical loads based on the priority ranking, the required power of each of the electrical loads, and the total discharging power.
The vehicle power distribution device provided by the embodiment of the disclosure can perform priority ranking on the electric loads according to the types of the electric loads and the currently set ranking requirement when the total discharge power is determined to be smaller than the sum of the required power of the electric loads. And distributing power for each electric load based on the priority ranking, the required power of each electric load and the total discharge power. The priority ranking used in the priority ranking is used for limiting what type of electric load the user expects to preferentially distribute power, so that the obtained priority ranking meets the expectation of the user, power can be reasonably distributed to all electric loads in the vehicle to the maximum extent under the requirement of the user, and the running state of the vehicle meets the expectation of the user.
In some embodiments, as shown in fig. 4, the sorting unit 32 includes:
a first determining module 321, configured to determine whether a target electrical load exists in each electrical load, where a type of the target electrical load is the same as a type defined by the sorting requirement; if so, the setup module 322 is triggered;
the setting module 322 is configured to set the priority of the target electrical load to be higher than other electrical loads in each of the electrical loads, under the trigger of the first determining module 321.
In some embodiments, as shown in fig. 4, the setting module 322 is configured to determine a request category corresponding to each target electrical load if the number of the target electrical loads is greater than one; determining the priority of each target electric load based on the corresponding request type of each target electric load; and setting the priority of the electric load with the lowest priority in each target electric load to be higher than that of the other electric loads.
In some embodiments, as shown in fig. 4, the allocation unit 33 includes:
a first distribution module 331, configured to determine whether the total discharge power is greater than a sum of required powers of the target electrical loads; if not, distributing power to each target electric load by using the total discharge power according to the proportion of the required power of each target load; and if the total discharge power is larger than the preset discharge power, distributing the corresponding required power for each target electric load by using the total discharge power, and distributing power for other electric loads by using the distributed residual total discharge power according to the proportion of the required power of other electric loads.
In some embodiments, as shown in fig. 4, the setting module 322 is further configured to set the priority of each of the electrical loads to be the same if the first determining module 321 determines that the target electrical load does not exist in each of the electrical loads.
In some embodiments, as shown in fig. 4, the allocation unit 33 includes:
a second distributing module 332, configured to distribute power to the electrical loads by using the total discharging power according to a ratio between demanded powers of the electrical loads.
In some embodiments, as shown in fig. 4, the sorting unit 32 further includes:
a second judging module 323, configured to judge whether a specific type of electric load exists in each of the electric loads before the first judging module 322 judges whether a target electric load exists in each of the electric loads; if the specific type of electric load exists in the electric loads, determining whether the priority of the specific type of electric load is set to be the highest; if so, the priority of setting the specific type of the electric load is the highest.
In some embodiments, as shown in fig. 4, the allocation unit 33 includes:
a third distribution module 333, configured to distribute the required power corresponding to the specific type of electrical load.
In some embodiments, as shown in fig. 4, the specific type of electrical load is a range extender, and the second determining module 323 is configured to determine whether a difference between the total discharge power and an actual power of a vehicle power battery is smaller than a preset difference; and if the priority is smaller than the preset priority, setting the range extender to have the highest priority.
In some embodiments, as shown in fig. 4, the specific type of electrical load is an on-board voltage transformation unit, and the second determining module 323 is configured to determine whether a charge of a battery in the vehicle is greater than a charge threshold, where the battery distributes required power to the on-board voltage transformation unit; and if not, setting the priority of the vehicle-mounted voltage transformation unit to be highest.
In some embodiments, as shown in fig. 4, the types of the electric loads involved by the sorting unit 32 include safety electric loads and comfort electric loads.
The vehicle power distribution device provided by the embodiment of the third aspect may be configured to execute the vehicle power distribution method provided by the embodiment of the first aspect or the second aspect, and the related meanings and specific implementations may refer to the related descriptions in the embodiment of the first aspect or the second aspect, and will not be described in detail here.
In a fourth aspect, an embodiment of the present disclosure provides a vehicle control system, as shown in fig. 5, including: a controller 41; the controller 41 is operable to execute the vehicle power distribution method of the first or second aspect.
In a fifth aspect, an embodiment of the present disclosure provides a vehicle, as shown in fig. 6, including: a power battery 51, N power loads 52, and a vehicle control system 53 according to the fourth aspect, where N is greater than or equal to 1;
the power battery 51 is configured to distribute power to each of the electric loads 52 based on a power distribution policy of the vehicle control system 53 for each of the electric loads 52.
In some embodiments, the vehicle further comprises: a range extender;
the range extender is configured to allocate power to each of the electrical loads 52 based on a power allocation strategy of the vehicle control system 53 for each of the electrical loads.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (15)

1. A vehicle power distribution method, characterized in that the method comprises:
acquiring the sum of the required power of each electric load in a vehicle and the total discharge power of the vehicle;
if the total discharge power is smaller than the sum of the required power of each electric load, performing priority ranking on each electric load according to the type of each electric load and the currently set ranking requirement, wherein the ranking requirement is used for limiting what type of electric load the user expects to distribute power preferentially;
distributing power to each of the electrical loads based on the priority ranking, the required power of each of the electrical loads, and the total discharge power.
2. The method of claim 1, wherein prioritizing each of the electrical loads according to a type of each of the electrical loads and a currently set sequencing requirement comprises:
judging whether a target electric load exists in each electric load, wherein the type of the target electric load is the same as the type defined by the sequencing requirement;
and if so, setting the priority of the target electric load to be higher than other electric loads in each electric load.
3. The method of claim 2, wherein setting the target electrical load to a higher priority than other electrical loads of the electrical loads comprises:
if the number of the target electric loads is more than one, determining a request type corresponding to each target electric load;
determining the priority of each target electric load based on the corresponding request type of each target electric load;
and setting the priority of the electric load with the lowest priority in each target electric load to be higher than that of the other electric loads.
4. The method of claim 2, wherein allocating power to each of the electrical loads based on the prioritization, the power demand of each of the electrical loads, and the total discharge power comprises:
judging whether the total discharge power is greater than the sum of the required power of each target electric load;
if not, distributing power for each target electric load by using the total discharge power according to the proportion of the required power of each target load;
and if the total discharge power is larger than the preset discharge power, distributing the corresponding required power for each target electric load by using the total discharge power, and distributing power for other electric loads by using the distributed residual total discharge power according to the proportion of the required power of other electric loads.
5. The method of claim 2, further comprising:
and if the target electric load does not exist in the electric loads, setting the priority of the electric loads to be the same.
6. The method of claim 5, wherein allocating power to each of the electrical loads based on the prioritization, the power demand of each of the electrical loads, and the total discharge power comprises:
and distributing power for each electric load by using the total discharge power according to the proportion of the required power of each electric load.
7. The method of claim 2, wherein prior to determining whether a target electrical load exists in each of the electrical loads, the method further comprises:
judging whether the specific type of electric load exists in each electric load;
if the specific type of electric load exists in the electric loads, determining whether the priority of the specific type of electric load is set to be the highest;
if so, the priority of setting the specific type of the electric load is the highest.
8. The method of claim 7, wherein allocating power to each of the electrical loads based on the prioritization, the power demand of each of the electrical loads, and the total discharge power comprises:
and distributing the corresponding required power for the specific type of electric load.
9. The method of claim 7, wherein the specific type of electrical load is a range extender, and determining whether to set the specific type of electrical load with the highest priority comprises:
judging whether the difference value between the total discharge power and the actual power of the vehicle power battery is smaller than a preset difference value or not;
and if the priority is smaller than the preset priority, setting the range extender to have the highest priority.
10. The method of claim 7, wherein the specific type of electrical load is an on-board voltage transformation unit, and determining whether the specific type of electrical load is set with highest priority comprises:
determining whether the electric quantity of a storage battery in the vehicle is larger than an electric quantity threshold value, wherein the storage battery distributes required power for the vehicle-mounted voltage transformation unit;
and if not, setting the priority of the vehicle-mounted voltage transformation unit to be highest.
11. The method according to any one of claims 1 to 10, wherein the types of the electric loads include safety electric loads and comfort electric loads.
12. A vehicle power distribution apparatus, characterized in that the apparatus comprises:
an acquisition unit configured to acquire a sum of required powers of electric loads in a vehicle and a total discharge power of the vehicle;
the sorting unit is used for sorting the priority of each electric load according to the type of each electric load and a currently set sorting requirement if the total discharge power is smaller than the sum of the required power of each electric load, wherein the sorting requirement is used for limiting what type of electric load the user expects to preferentially distribute power;
and the distribution unit is used for distributing power to each electric load based on the priority ranking, the required power of each electric load and the total discharge power.
13. A vehicle control system, characterized by comprising: a controller; the controller, when executed, performs the vehicle power distribution method of any one of claims 1 to 11.
14. A vehicle, characterized in that the vehicle comprises: a power battery, N electrical loads, and the vehicle control system of claim 13, wherein N is greater than or equal to 1;
the power battery is used for distributing power to each electric load based on a power distribution strategy of the vehicle control system for each electric load.
15. The vehicle of claim 14, further comprising: a range extender;
the range extender is used for distributing power to each electric load based on a power distribution strategy of the vehicle control system for each electric load.
CN202011401031.XA 2020-12-04 2020-12-04 Vehicle power distribution method and device, vehicle control system and vehicle Pending CN112606690A (en)

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