CN113696840A - Vehicle power distribution method and system and automobile - Google Patents

Vehicle power distribution method and system and automobile Download PDF

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Publication number
CN113696840A
CN113696840A CN202110795294.1A CN202110795294A CN113696840A CN 113696840 A CN113696840 A CN 113696840A CN 202110795294 A CN202110795294 A CN 202110795294A CN 113696840 A CN113696840 A CN 113696840A
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China
Prior art keywords
power distribution
vehicle
electronic module
storage battery
automobile
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Pending
Application number
CN202110795294.1A
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Chinese (zh)
Inventor
黄少堂
刘钦
张小波
郑玉圆
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Jiangling Motors Corp Ltd
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Jiangling Motors Corp Ltd
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Publication date
Application filed by Jiangling Motors Corp Ltd filed Critical Jiangling Motors Corp Ltd
Priority to CN202110795294.1A priority Critical patent/CN113696840A/en
Publication of CN113696840A publication Critical patent/CN113696840A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a vehicle power distribution method, a vehicle power distribution system and an automobile, and relates to the field of automobile electronic information, wherein the vehicle power distribution method comprises the following steps: when the vehicle is in a power-off state, starting first countdown within a first preset time period, and traversing the bus to determine whether a message is transmitted or not after the first countdown is finished; if yes, determining that at least one electronic module is abnormal in sleep according to the type of the message so as to prevent the bus from sleeping; and recording the fault information of the electronic module, and controlling the electronic module to be powered off by the power distribution gateway so as to enable the bus to enter a dormant state. The invention can solve the technical problems that the electric quantity of the storage battery is consumed due to abnormal dormancy of the electronic module and the next starting of the automobile is difficult due to the power shortage of the storage battery in the prior art.

Description

Vehicle power distribution method and system and automobile
Technical Field
The invention relates to the field of automobile electronic information, in particular to a vehicle power distribution method, a vehicle power distribution system and an automobile.
Background
Along with social progress, various practical electronic modules on the automobile are developed, each electronic module is provided with a corresponding controller, and all the controllers are controlled in a unified mode through a traveling computer.
Electronic modules on the automobile are numerous, errors or disorder of programs of electronic modules on the automobile can cause abnormal dormancy of the electronic modules after the automobile is powered off, the electronic modules keep working normally for a long time, the abnormal dormancy of the electronic modules can cause consumption of certain storage battery electric quantity, and under the condition that the storage battery outputs continuously, the storage battery electric quantity is too low to cause power shortage of the storage battery, so that the automobile is difficult to start when being started next time.
Disclosure of Invention
Based on the above, the invention aims to provide a vehicle power distribution method, a vehicle power distribution system and a vehicle, and aims to solve the technical problems that the electric quantity of a storage battery is consumed due to abnormal dormancy of an electronic module, and the vehicle is difficult to start next time due to power shortage of the storage battery in the prior art.
One aspect of the present invention provides a vehicle power distribution method applied in a power distribution gateway of a vehicle, the method comprising:
when the vehicle is in a power-off state, starting first countdown within a first preset time period, and traversing the bus to determine whether a message is transmitted or not after the first countdown is finished;
if yes, determining that at least one electronic module is abnormal in sleep according to the type of the message so as to prevent the bus from sleeping;
and recording the fault information of the electronic module, and controlling the electronic module to be powered off by the power distribution gateway so as to enable the bus to enter a dormant state.
According to an aspect of the foregoing technical solution, after the step of recording the fault information of the electronic module, the method further includes:
receiving a remote terminal instruction sent by a vehicle-mounted communication terminal, and authenticating the vehicle-mounted communication terminal with the power distribution gateway;
when the vehicle-mounted communication terminal passes the authentication with the power distribution gateway, judging whether the vehicle is in an idle state;
if yes, the power distribution gateway controls the electronic module to be powered on and sends a diagnosis message to the electronic module.
According to an aspect of the foregoing technical solution, the method further includes:
acquiring storage battery information of the automobile storage battery, wherein the storage battery information at least comprises residual electric quantity information of the storage battery;
judging whether the residual electric quantity of the storage battery is larger than a residual electric quantity threshold value or not;
if not, when the automobile is a fuel oil vehicle, the power distribution gateway controls the circuit of the electronic module to be disconnected;
if not, when the automobile is a non-fuel vehicle, the distribution gateway controls the DC-DC converter to be attracted so as to charge the storage battery through the high-voltage battery pack.
According to an aspect of the foregoing technical solution, after the step of controlling, by the distribution gateway, the DC-DC converter to operate so as to charge the storage battery through the high-voltage battery pack, the method further includes:
and when the residual capacity of the storage battery is greater than or equal to the residual capacity threshold value, the power distribution gateway controls the DC-DC converter to be disconnected so as to stop the high-voltage battery pack from charging the storage battery.
According to an aspect of the foregoing technical solution, the method further includes:
after the first countdown is finished, starting second countdown by second preset time;
after the second countdown is finished, detecting whether the working current of the electronic module exceeds a preset current value or not;
and if so, controlling the power-off of the electronic module exceeding the preset current value by the power distribution gateway.
According to an aspect of the foregoing technical solution, the method further includes:
judging whether the number of the electronic modules is multiple or not;
and if so, determining the power distribution sequence of each electronic module according to a preset rule.
Another aspect of the present invention provides a vehicle power distribution system for use in a power distribution gateway of a vehicle, the system comprising:
the traversing module is used for starting first countdown in a first preset time period when the vehicle is in a power-off state, and traversing whether a message is transmitted on the bus after the first countdown is finished;
the determining module is used for determining that at least one electronic module is abnormal in dormancy so as to cause the bus not to be dormant according to the type of the message;
and the control module is used for recording the fault information of the electronic module, and the power distribution gateway controls the electronic module to be powered off so as to enable the bus to enter a dormant state.
According to an aspect of the foregoing technical solution, the system further includes:
the command receiving module is used for receiving a remote terminal command sent by a vehicle-mounted communication terminal, and the vehicle-mounted communication terminal is authenticated with the power distribution gateway;
the first judgment module is used for judging whether the automobile is in an idle state or not when the vehicle-mounted communication terminal passes the authentication with the power distribution gateway;
and the diagnosis module is used for controlling the electronic module to be electrified and sending a diagnosis message to the electronic module by the power distribution gateway when the automobile is in an idle state.
According to an aspect of the foregoing technical solution, the system further includes:
the acquisition module is used for acquiring storage battery information of the automobile storage battery, wherein the storage battery information at least comprises residual electric quantity information of the storage battery;
the second judgment module is used for judging whether the residual electric quantity of the storage battery is larger than a residual electric quantity threshold value or not;
when the remaining capacity of the storage battery is not greater than the remaining capacity threshold, the control module is further configured to:
when the automobile is a fuel oil automobile, the power distribution gateway controls the circuit of the electronic module to be disconnected;
when the automobile is a non-fuel vehicle, the distribution gateway controls the DC-DC converter to be closed so as to charge the storage battery through the high-voltage battery pack.
A further aspect of the present invention provides an automobile, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the vehicle power distribution method in the above technical solution.
By adopting the vehicle power distribution method, the vehicle power distribution system and the vehicle, after the vehicle is powered off for a certain time, whether message transmission exists on the bus or not is detected to determine whether the bus is not dormant caused by abnormal dormancy of the electronic module or not, and after the bus is determined to be not dormant caused by abnormal dormancy of the electronic module, the power distribution gateway controls the circuit of the electronic module to be disconnected so as to prevent the storage battery of the vehicle from being lack of power due to the fact that the storage battery continuously supplies power to the electronic module, so that the technical problems that the bus is not dormant caused by the abnormal dormancy of the electronic module of the vehicle and the storage battery is lack of power due to the continuous power supply of the storage battery in the prior art can be solved.
Drawings
FIG. 1 is a flow chart of a vehicle power distribution method in a first embodiment of the invention;
FIG. 2 is a schematic diagram of a vehicle power distribution system in a third embodiment of the present invention;
the following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a first embodiment of the present invention provides a power distribution method for a vehicle, which is applied to a power distribution gateway of the vehicle, and the method includes steps S10-S30:
step S10, when the vehicle is in the power-off state, starting the first countdown in a first preset time period, and after the first countdown is finished, traversing the bus to determine whether there is message transmission;
the first preset time period is 30min, for example, the countdown is started by taking 30min as the preset time period, and after the countdown is finished, whether the transmission of the messages among the electronic modules influencing the CAN bus dormancy on the CAN bus is influenced or not is searched in a traversing mode. And the electronic modules such as an automobile light module, an automobile seat module and the like inquire whether messages of the automobile light module and the automobile seat module are transmitted through a CAN bus, and after the countdown is finished, if the messages of the automobile light module and the automobile seat module are transmitted, the electronic modules are judged to be abnormal in dormancy.
After the first countdown is finished, if there is still a message transmitted on the bus, the process proceeds to step S20.
Step S20, determining that at least one electronic module is abnormal in sleep according to the type of the message to cause the bus not to sleep;
the message on the automobile usually includes the type and the state of the electronic module, and the electronic module which sends the message can be directly determined according to the type of the electronic module recorded in the message, for example, if the message type of the message is sent by the automobile seat module, it is determined that the bus is not dormant due to abnormal dormancy of the automobile seat module.
After confirming that there is no bus sleep due to the electronic module sleep exception, the flow proceeds to step S30.
It should be noted here that the electronic module that causes the bus not to sleep may be a single electronic module, or may exist in multiple electronic modules simultaneously, and this embodiment is not particularly limited.
And step S30, recording the fault information of the electronic module, and controlling the electronic module to be powered off by the power distribution gateway so as to enable the bus to enter a dormant state.
For example, it is confirmed in step S20 that the bus caused by the car seat module is not dormant, according to the preset rule, the car seat module should be dormant within 30min, and actually the car seat module is not dormant for more than 30min, it is determined that there is a certain fault in the car seat module, and it is just because of the fault, the car seat module cannot be completely dormant within the preset time, and the battery will continuously output current to supply power to the car seat module, which easily causes a power shortage of the battery. After determining which electronic module causes the CAN bus not to be dormant, recording fault information of the automobile seat module (such as the electric adjusting unit keeps a working state, the seat heating unit keeps a heating state and the like), and controlling the circuit disconnection of the automobile seat by the power distribution gateway, so that the electric quantity of the storage battery is controlled to be above a preset value, and the phenomenon that the long-time output current of the storage battery causes power shortage is prevented. After the automobile seat module is powered off and dormant, the CAN bus enters a dormant state within a certain time.
By adopting the vehicle power distribution method shown in the embodiment, after the automobile is powered off for a certain time, whether message transmission exists on the bus is detected, whether the bus caused by abnormal dormancy of the electronic module does not sleep is determined, and after the bus caused by abnormal dormancy of the electronic module is determined, the circuit of the electronic module is controlled to be disconnected through the power distribution gateway, so that the storage battery of the automobile is prevented from continuously supplying power to the electronic module to cause power shortage of the storage battery, and the technical problems that the bus is not dormant due to abnormal dormancy of the electronic module of the automobile and the storage battery continuously supplies power to cause power shortage of the storage battery in the prior art can be solved.
A second embodiment of the present invention discloses a vehicle power distribution method, in the vehicle power distribution method shown in the present embodiment:
in this embodiment, after step S10, the method further includes:
step S11, after the first countdown is finished, starting a second countdown with a second preset time;
step S12, after the second countdown is finished, whether the working current of an electronic module exceeds the preset current value is detected;
similarly, the second preset time is also 30min, the preset current value is 30ma for example, after the countdown of 30min is finished, whether the operating current of an electronic module exceeds 30min is detected, if the operating current exceeds 30ma, the electronic module is judged to be not completely dormant, or the storage battery is easy to be short of power, the operation goes to step S13,
and step S13, the power distribution gateway controls the electronic modules exceeding the preset current value to power off.
Since the electronic modules in the vehicle also have different power consumption levels, in the present embodiment, after step S20, the method further includes:
step S21, determining whether there are multiple electronic modules;
when there are a plurality of electronic modules that affect the bus not to sleep, the process proceeds to step S22.
And step S22, determining the power distribution sequence of each electronic module according to preset rules.
The preset rule is, for example, the power consumption degree, when a plurality of electronic modules influencing the non-sleep state of the bus exist on the automobile at the same time, sequencing is carried out according to the power consumption degree of each electronic module, the power distribution gateway firstly controls the electronic modules with high power consumption (such as automobile light modules) to be powered off, then controls the electronic modules with low power consumption (such as automobile seat modules) to be powered off, and determines the power distribution sequence of each electronic module according to the preset rule, so that the storage battery can be effectively prevented from being excessively output.
In this embodiment, after step S30, the method further includes:
step S31, receiving a remote terminal instruction sent by a vehicle-mounted communication terminal, wherein the vehicle-mounted communication terminal authenticates with the power distribution gateway;
the vehicle-mounted communication terminal is a T-BOX, and after the T-BOX sends a remote terminal instruction to the power distribution gateway, the T-BOX and the power distribution gateway perform interactive authentication.
Step S32, when the vehicle-mounted communication terminal passes the authentication with the power distribution gateway, judging whether the vehicle is in an idle state;
the idle state of the automobile refers to the state that the automobile is not in a driving state, and the electronic module with the fault on the automobile can be diagnosed to recover the normal state only when the automobile is in the driving state.
After the vehicle is in the idle state, the process proceeds to step S33.
And step S33, the power distribution gateway controls the electronic module to be electrified and sends a diagnosis message to the electronic module.
In the first embodiment, it has been mentioned that, in order to prevent the power shortage caused by the continuous output of the storage battery, the power distribution gateway disconnects the electronic module circuit with the fault, when the electronic module needs to be diagnosed, the power distribution gateway controls the electronic module circuit with the fault to be connected, the power distribution module sends a diagnosis message to the electronic module with the fault, the electronic module with the fault returns the fault type of the electronic module to the power distribution gateway in a message form, and then the electronic module is recovered according to the fault type of the electronic module.
In this embodiment, in order to avoid that the battery cannot meet the requirement of normal starting of the vehicle after a certain period of continuous output, the method further includes:
step S40, obtaining storage battery information of the automobile storage battery, wherein the storage battery information at least comprises the residual electric quantity information of the storage battery;
the remaining power information is, for example, the remaining battery power of 20%, 30%, or the like.
Step S41, judging whether the residual capacity of the storage battery is larger than a residual capacity threshold value;
the remaining capacity threshold value should be calibrated according to the capacity of the storage battery of the automobile. In the present embodiment, the remaining power threshold is 30% of the remaining power of the battery, and only when the battery power satisfies 30%, it is possible to ensure that the vehicle can be normally started and the power required for adjusting each electronic device next time.
In some embodiments, the remaining power threshold may also be calibrated according to the power required for starting the vehicle, for example, 5% of the power of the battery needs to be consumed for starting the vehicle once, and the power required for starting the vehicle should be considered when calibrating the remaining power threshold, for example, the remaining power threshold is 20% of the power of the battery, that is, the remaining power should at least satisfy the power required for starting the vehicle 4 times.
When the remaining capacity of the battery is less than the threshold value, the steps are respectively performed to step S42 and step S43 according to the type of the vehicle.
Step S42, when the automobile is a fuel oil automobile, the power distribution gateway controls the circuit of the electronic module to be disconnected;
it should be noted here that only the storage battery on the fuel-powered vehicle supplies power to each electronic device, and therefore, in order to avoid the remaining capacity of the storage battery being too low, when the remaining capacity of the storage battery is detected to be less than or equal to the remaining capacity threshold value, all the electronic modules are immediately controlled by the power distribution gateway to be powered off so as to reserve the capacity to provide conditions for the next vehicle start.
And step S43, when the automobile is a non-fuel vehicle, the power distribution gateway controls the DC-DC converter to be closed so as to charge the storage battery through the high-voltage battery pack.
The non-fuel vehicle comprises a pure electric vehicle and a hybrid electric vehicle, the vehicle is provided with a storage battery and a high-voltage battery pack, and the storage battery can be charged through the high-voltage battery pack under necessary conditions. And a current-to-current converter (i.e., a DC-DC converter) is required to convert the current output from the high-voltage battery pack into a current that meets the requirements of the secondary battery.
In this embodiment, in order to avoid that the battery is continuously charged by the high-voltage battery pack, which results in insufficient self-sound remaining capacity, and thus the endurance is significantly affected, the method further includes:
and step S44, when the residual capacity of the storage battery is greater than or equal to the residual capacity threshold value, the power distribution gateway controls the DC-DC converter to be disconnected so as to stop the high-voltage battery pack from charging the storage battery.
After the storage battery is charged and the residual electric quantity of the storage battery is larger than the residual electric quantity threshold value, the distribution gateway controls the DC-DC converter to be disconnected, so that the obvious reduction of the endurance caused by the continuous charging of the storage battery by the high-voltage battery pack is avoided.
Referring to fig. 2, a third embodiment of the present invention provides a vehicle power distribution system applied in a power distribution gateway of a vehicle, the system comprising:
the traversing module 10 is configured to start first countdown within a first preset time period when the vehicle is in a power-off state, and traverse whether a message is transmitted on the bus after the first countdown is finished;
the first preset time period is 30min, for example, the countdown is started by taking 30min as the preset time period, and after the countdown is finished, whether the transmission of the messages among the electronic modules influencing the CAN bus dormancy on the CAN bus is influenced or not is searched in a traversing mode. And the electronic modules such as an automobile light module, an automobile seat module and the like inquire whether messages of the automobile light module and the automobile seat module are transmitted through a CAN bus, and after the countdown is finished, if the messages of the automobile light module and the automobile seat module are transmitted, the electronic modules are judged to be abnormal in dormancy.
The determining module 20 is configured to determine that at least one electronic module is abnormal in sleep according to the type of the message, so as to cause the bus not to sleep;
the message on the automobile usually includes the type and the state of the electronic module, and the electronic module which sends the message can be directly determined according to the type of the electronic module recorded in the message, for example, if the message type of the message is sent by the automobile seat module, it is determined that the bus is not dormant due to abnormal dormancy of the automobile seat module.
It should be noted here that the electronic module that causes the bus not to sleep may be a single electronic module, or may exist in multiple electronic modules simultaneously, and this embodiment is not particularly limited.
And the control module 30 is configured to record fault information of the electronic module, and the power distribution gateway controls the electronic module to power off, so that the bus enters a sleep state.
For example, the module is determined to confirm that the bus caused by the car seat module is not dormant, according to a preset rule, the car seat module should be dormant within 30min, and actually, the car seat module is not dormant after exceeding 30min, it is determined that a certain fault exists in the car seat module, just because of the existence of the fault, the car seat module cannot be completely dormant within a preset time, and the storage battery supplies power to the car seat module by continuous output current, which easily causes the power shortage of the storage battery. After determining which electronic module causes the CAN bus not to be dormant, recording fault information of the automobile seat module (such as the electric adjusting unit keeps a working state, the seat heating unit keeps a heating state and the like), and controlling the circuit disconnection of the automobile seat by the power distribution gateway, so that the electric quantity of the storage battery is controlled to be above a preset value, and the phenomenon that the long-time output current of the storage battery causes power shortage is prevented. After the automobile seat module is powered off and dormant, the CAN bus enters a dormant state within a certain time.
The command receiving module is used for receiving a remote terminal command sent by a vehicle-mounted communication terminal, and the vehicle-mounted communication terminal is authenticated with the power distribution gateway; the vehicle-mounted communication terminal is a T-BOX, and after the T-BOX sends a remote terminal instruction to the power distribution gateway, the T-BOX and the power distribution gateway perform interactive authentication.
The first judgment module is used for judging whether the automobile is in an idle state or not when the vehicle-mounted communication terminal passes the authentication with the power distribution gateway; the idle state of the automobile refers to the state that the automobile is not in a driving state, and the electronic module with the fault on the automobile can be diagnosed to recover the normal state only when the automobile is in the driving state.
And the diagnosis module is used for controlling the electronic module to be electrified and sending a diagnosis message to the electronic module by the power distribution gateway when the automobile is in an idle state.
In the above embodiment, in order to prevent the power shortage caused by the continuous output of the storage battery, the power distribution gateway disconnects the electronic module circuit with the fault, when the electronic module needs to be diagnosed, the power distribution gateway controls the electronic module circuit with the fault to be connected, the power distribution module sends a diagnosis message to the electronic module with the fault, the electronic module with the fault returns the fault type of the electronic module to the power distribution gateway in a message form, and then the electronic module is recovered according to the fault type of the electronic module.
The acquisition module is used for acquiring storage battery information of the automobile storage battery, wherein the storage battery information at least comprises residual electric quantity information of the storage battery; the remaining power information is, for example, the remaining battery power of 20%, 30%, or the like.
The second judgment module is used for judging whether the residual electric quantity of the storage battery is larger than a residual electric quantity threshold value or not; the remaining capacity threshold value should be calibrated according to the capacity of the storage battery of the automobile. In the present embodiment, the remaining power threshold is 30% of the remaining power of the battery, and only when the battery power satisfies 30%, it is possible to ensure that the vehicle can be normally started and the power required for adjusting each electronic device next time.
In some embodiments, the remaining power threshold may also be calibrated according to the power required for starting the vehicle, for example, 5% of the power of the battery needs to be consumed for starting the vehicle once, and the power required for starting the vehicle should be considered when calibrating the remaining power threshold, for example, the remaining power threshold is 20% of the power of the battery, that is, the remaining power should at least satisfy the power required for starting the vehicle 4 times.
When the remaining capacity of the storage battery is not greater than the remaining capacity threshold, the second control module is further configured to:
when the automobile is a fuel oil automobile, the power distribution gateway controls the circuit of the electronic module to be disconnected;
it should be noted here that only the storage battery on the fuel-powered vehicle supplies power to each electronic device, and therefore, in order to avoid the remaining capacity of the storage battery being too low, when the remaining capacity of the storage battery is detected to be less than or equal to the remaining capacity threshold value, all the electronic modules are immediately controlled by the power distribution gateway to be powered off so as to reserve the capacity to provide conditions for the next vehicle start.
When the automobile is a non-fuel vehicle, the distribution gateway controls the DC-DC converter to be closed so as to charge the storage battery through the high-voltage battery pack.
The non-fuel vehicle comprises a pure electric vehicle and a hybrid electric vehicle, the vehicle is provided with a storage battery and a high-voltage battery pack, and the storage battery can be charged through the high-voltage battery pack under necessary conditions. And a current-to-current converter (i.e., a DC-DC converter) is required to convert the current output from the high-voltage battery pack into a current that meets the requirements of the secondary battery.
Adopt the vehicle power distribution system who shows among this embodiment, after the car cuts off the electricity for a certain time, through detecting whether there is message transmission on the bus, with confirm whether there is the unusual bus that leads to of electronic module dormancy not dormancy, after confirming that the bus that leads to by electronic module dormancy is unusual, circuit through distribution gateway control electronic module breaks off, in order to prevent that the battery of car from continuing to lead to the battery insufficient voltage for electronic module power supply, can solve among the prior art electronic module dormancy of car and lead to the bus not dormancy unusually, the battery lasts the technical problem that the power supply leads to the battery insufficient voltage.
A fourth embodiment of the invention provides an automobile comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the vehicle power distribution method in the above embodiments when executing the program.
Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A method for distributing power to a vehicle, the method comprising:
when the vehicle is in a power-off state, starting first countdown within a first preset time period, and traversing the bus to determine whether a message is transmitted or not after the first countdown is finished;
if yes, determining that at least one electronic module is abnormal in sleep according to the type of the message so as to prevent the bus from sleeping;
and recording the fault information of the electronic module, and controlling the electronic module to be powered off by the power distribution gateway so as to enable the bus to enter a dormant state.
2. The vehicle power distribution method of claim 1, wherein after the step of recording fault information for the electronic module, the method further comprises:
receiving a remote terminal instruction sent by a vehicle-mounted communication terminal, and authenticating the vehicle-mounted communication terminal with the power distribution gateway;
when the vehicle-mounted communication terminal passes the authentication with the power distribution gateway, judging whether the vehicle is in an idle state;
if yes, the power distribution gateway controls the electronic module to be powered on and sends a diagnosis message to the electronic module.
3. The vehicle power distribution method of claim 1, further comprising:
acquiring storage battery information of the automobile storage battery, wherein the storage battery information at least comprises residual electric quantity information of the storage battery;
judging whether the residual electric quantity of the storage battery is larger than a residual electric quantity threshold value or not;
if not, when the automobile is a fuel oil vehicle, the power distribution gateway controls the circuit of the electronic module to be disconnected;
if not, when the automobile is a non-fuel vehicle, the distribution gateway controls the DC-DC converter to be attracted so as to charge the storage battery through the high-voltage battery pack.
4. The vehicle power distribution method of claim 3, wherein after the step of the power distribution gateway controlling a DC-DC converter to engage to charge the battery via a high voltage battery pack, the method further comprises:
and when the residual capacity of the storage battery is greater than or equal to the residual capacity threshold value, the power distribution gateway controls the DC-DC converter to be disconnected so as to stop the high-voltage battery pack from charging the storage battery.
5. The vehicle power distribution method of claim 1, further comprising:
after the first countdown is finished, starting second countdown by second preset time;
after the second countdown is finished, detecting whether the working current of the electronic module exceeds a preset current value or not;
and if so, controlling the power-off of the electronic module exceeding the preset current value by the power distribution gateway.
6. The vehicle power distribution method according to any one of claims 1-5, further comprising:
judging whether the number of the electronic modules is multiple or not;
and if so, determining the power distribution sequence of each electronic module according to a preset rule.
7. A vehicle power distribution system for use in a power distribution gateway of a vehicle, the system comprising:
the traversing module is used for starting countdown in a preset time period when the vehicle is in a power-off state, and traversing whether a message is transmitted on the bus after the countdown is finished;
the determining module is used for determining that at least one electronic module is abnormal in dormancy so as to cause the bus not to be dormant according to the type of the message;
and the control module is used for recording the fault information of the electronic module, and the power distribution gateway controls the electronic module to be powered off so as to enable the bus to enter a dormant state.
8. The vehicle power distribution system of claim 7, further comprising:
the command receiving module is used for receiving a remote terminal command sent by a vehicle-mounted communication terminal, and the vehicle-mounted communication terminal is authenticated with the power distribution gateway;
the first judgment module is used for judging whether the automobile is in an idle state or not when the vehicle-mounted communication terminal passes the authentication with the power distribution gateway;
and the diagnosis module is used for controlling the electronic module to be electrified and sending a diagnosis message to the electronic module by the power distribution gateway when the automobile is in an idle state.
9. The vehicle power distribution method of claim 7, wherein the system further comprises:
the acquisition module is used for acquiring storage battery information of the automobile storage battery, wherein the storage battery information at least comprises residual electric quantity information of the storage battery;
the second judgment module is used for judging whether the residual electric quantity of the storage battery is larger than a residual electric quantity threshold value or not;
when the remaining capacity of the storage battery is not greater than the remaining capacity threshold, the control module is further configured to:
when the automobile is a fuel oil automobile, the power distribution gateway controls the circuit of the electronic module to be disconnected;
when the automobile is a non-fuel vehicle, the distribution gateway controls the DC-DC converter to be closed so as to charge the storage battery through the high-voltage battery pack.
10. An automobile, characterized in that the automobile comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 6 when executing the program.
CN202110795294.1A 2021-07-14 2021-07-14 Vehicle power distribution method and system and automobile Pending CN113696840A (en)

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Application publication date: 20211126