CN110406379B - Power supply control method and vehicle control system - Google Patents
Power supply control method and vehicle control system Download PDFInfo
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- CN110406379B CN110406379B CN201910756563.6A CN201910756563A CN110406379B CN 110406379 B CN110406379 B CN 110406379B CN 201910756563 A CN201910756563 A CN 201910756563A CN 110406379 B CN110406379 B CN 110406379B
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000007958 sleep Effects 0.000 claims description 40
- 230000001939 inductive effect Effects 0.000 claims description 19
- 230000005059 dormancy Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims 3
- 230000006698 induction Effects 0.000 claims 2
- 230000003068 static effect Effects 0.000 abstract description 12
- 230000008569 process Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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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
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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Abstract
The embodiment of the invention relates to the technical field of electric control of electric automobiles, and provides a power supply control method and a vehicle control system. The method comprises the following steps: when all the second controllers are in the dormant state, the first controller controls the power supply module to stop supplying power to all the second controllers, and when the first controller is in the dormant state, the first controller controls the power supply module to stop supplying power to the first controller. Compared with the prior art, the embodiment of the invention eliminates the consumption of the static power supply and saves the power resources.
Description
Technical Field
The invention relates to the technical field of electric control of electric automobiles, in particular to a power supply control method and a vehicle control system.
Background
The automobile controller of the electric automobile uses a 12V/24V low-voltage storage battery to provide power, along with the continuous innovation of automobile technology, the controller on the electric automobile is continuously increased, and the energy demand of the low-voltage storage battery for supplying power to the controller of the electric automobile is also continuously increased, so that the situation that the electric automobile cannot normally run due to the gradual battery feed can often occur in the use process.
In order to reduce the burden of the low-voltage storage battery, the service time of electric energy in the low-voltage storage battery is prolonged, and when the electric automobile is in a dormant state or a non-working state, a core controller of the electric automobile controls the low-voltage storage battery to stop supplying power to other non-core controllers so as to reduce the consumption of a static power supply.
However, after the core controller of the electric automobile controls the low-voltage storage battery to supply power to other non-core controllers, the low-voltage storage battery still keeps supplying power to the core controller, and still has static power consumption, so that power resource waste is caused.
Disclosure of Invention
The application aims to provide a power supply control method and a vehicle control system, which are used for eliminating the consumption of a static power supply and saving power resources.
In order to achieve the above object, the technical scheme adopted by the embodiment of the application is as follows:
In a first aspect, an embodiment of the present invention provides a power supply control method, which is applied to a vehicle control system, where the vehicle control system includes a power module, a first controller, and at least one second controller, where the first controller and the at least one second controller are both electrically connected to the power module, and the first controller is electrically connected to each of the second controllers; the method comprises the following steps: when all the second controllers are in a dormant state, the first controller controls the power supply module to stop supplying power to all the second controllers, and when the first controller is in a state to be dormant, the first controller controls the power supply module to stop supplying power to the first controller.
In a second aspect, an embodiment of the present invention provides a vehicle control system, where the vehicle control system includes a power module, a first controller, and at least one second controller, where the first controller and the at least one second controller are both electrically connected to the power module, and the first controller is electrically connected to each of the second controllers; and the first controller is used for controlling the power supply module to stop supplying power to all the second controllers when all the second controllers are in a dormant state, and controlling the power supply module to stop supplying power to the first controller when the first controller is in a state of waiting to be dormant.
Compared with the prior art, the application has the following beneficial effects:
according to the power supply control method and the vehicle control system provided by the embodiment of the application, when all the second controllers are in the dormant state, the first controller controls the power supply module to stop supplying power to all the second controllers, and when the first controller is in the dormant state, the power supply module is controlled to stop supplying power to the first controller, so that the power supply module stops supplying power to all the controllers, the consumption of a static power supply is eliminated, the power resource is saved, and the electric automobile is ensured to resume normal power supply operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a block diagram of a vehicle control system provided by an embodiment of the present invention;
fig. 2 shows a flowchart of a power supply control method provided by an embodiment of the present invention;
fig. 3 shows a flowchart of stopping power supply of a power module according to an embodiment of the present invention;
FIG. 4 shows a flow chart for waiting for a sleep state to a sleep state according to an embodiment of the present invention;
fig. 5 shows a flowchart of power supply module power restoration according to an embodiment of the present invention.
Icon: 10-a vehicle control system; 110-a power module; 120-a first controller; 130-a second controller; 140-a first switch group; 141-an inductive switch; 142-a first switch; 150-a second switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The low-voltage 12V/24V storage battery is used as a low-voltage power supply of the electric automobile and provides power supply for a controller in the electric automobile. With the continuous innovation of automobile technology, the number of controllers on an electric automobile is continuously increased, so that the energy demand of a low-voltage storage battery is also continuously increased, and the embarrassment that vehicles cannot be started normally due to feeding of the low-voltage storage battery is often easy to occur in the use process. And when the electric automobile enters a dormant state or a non-working state, the low-voltage storage battery still supplies power for a controller of the electric automobile, so that larger static power consumption exists, and the power resource waste is caused.
In order to reduce the burden of the low-voltage storage battery, reduce the consumption of a static power supply, prolong the service time of electric energy in the low-voltage storage battery, and when the electric automobile is in a dormant state or a non-working state, a core controller of the electric automobile controls the low-voltage storage battery to stop supplying power to other non-core controllers. However, after the core controller of the electric automobile controls the low-voltage storage battery to supply power to other non-core controllers, the low-voltage storage battery still keeps supplying power to the core controller, so that static power consumption cannot be eliminated.
In order to eliminate static power consumption, save power resources and ensure that a low-voltage storage battery can be restored after power supply is stopped so as to enable an electric automobile to work normally, the embodiment of the invention provides a power supply control method and a vehicle control system.
Referring to fig. 1, referring to a vehicle control system 10 of an electric vehicle, the vehicle control system 10 includes a power module 110, a first controller 120, at least one second controller 130, a first switch group 140 and at least one second switch 150. The first controller 120 and the second controller 130 are all automobile controllers of an electric automobile, the power module 110 is electrically connected with the first controller 120 through the first switch group 140, the power module 110 is electrically connected with one second controller 130 through one second switch 150, the second switches 150 are in one-to-one correspondence with the second controllers 130, and the first controller 120 is electrically connected with all the second switches 150 and the second controllers 130. The number of second controllers 130 may be 1,2, or even more.
The power module 110 is electrically connected to the first controller 120 through the first switch set 140 and electrically connected to the second controller 130 through one second switch 150, for supplying power to the first controller 120 and all the second controllers 130. The power module 110 may be, but is not limited to, a 24V low voltage battery or a 12V low voltage battery.
The first controller 120 is electrically connected to the first switch group 140 and all the second switches 150 and the second controllers 130, and is used for controlling the power module 110 to stop supplying power to the second controllers 130 when the second controllers 130 are in a dormant state, controlling the power module 110 to stop supplying power to all the second controllers 130 when all the second controllers 130 are in a dormant state, and controlling the power module 110 to stop supplying power to the first controller 120 when the first controller 120 is in a dormant state. It should be noted that, the first controller 120 may be an electric vehicle controller, i.e., a core controller, and the first controller 120 is electrically connected to other functional modules, such as a pedal, a key switch, a gear, and the like. In other embodiments of the present invention, the first controller 120 may also be a separately established directional controller.
As an embodiment, the first controller 120 may be an integrated circuit chip with signal processing capability. The first controller 120 may be a general-purpose processor, including a central processing unit (Central Processing Unit, abbreviated as CPU), a network processor (Network Processor, abbreviated as NP), etc.; but may also be a digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components.
The first controller 120 includes a first data processing module, a first communication module, and a first input/output interface, where the first data processing module communicates with the first input/output interface through the first communication module, and the first input/output interface is electrically connected to all the second controllers 130, all the second switches 150, the first switch group 140, and other functional modules. The first data processing module is used for acquiring the condition of the data sent out or received by the first input/output interface. The first data processing module is used for processing signals and/or Analog signals, wherein Analog signal processing may employ Analog-to-Digital Converter (ADC). The first data processing module may be an integrated chip or a common circuit used by a general controller, and the first communication module may be a controller area network (Controller Area Network, CAN) network, with a dedicated CAN chip. The first input-output interface may be, but is not limited to, a universal asynchronous serial data transmission (Tx) port, a universal asynchronous serial data reception (Rx) port, or the like.
Each second controller 130 is electrically connected to one second switch 150, and each second controller 130 is electrically connected to the first controller 120, where the second controller 130 is configured to return the second control parameter according to the state detection signal sent by the first controller 120, so that the first controller 120 determines whether the second controller 130 is in the sleep state according to the second control parameter. The second controller 130 may be a non-core controller in an electric vehicle, and the second controller 130 may be electrically connected with other functional modules, such as a communication module, a positioning module, a display module, and the like. In other embodiments of the present invention, when the first controller 120 is a separately provided controller for directional use, the second controller 130 may be any controller in an electric vehicle.
As an embodiment, the second controller 130 may be an integrated circuit chip with signal processing capability. The second controller 130 may be a general-purpose processor, including a central processing unit (Central Processing Unit, abbreviated as CPU), a network processor (Network Processor, abbreviated as NP), and the like; but may also be a digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components.
The second controller 130 includes a second data processing module, a second communication module, and a second input/output interface, where the second data processing module communicates with the second input/output interface through the second communication module, and the second input/output interface is used to connect with other functional modules. The second data processing module is used for acquiring the condition of sending data or receiving data from the second input/output interface. The second data processing module is used for processing signals and/or analog signals, wherein the analog signal processing can employ an ADC. The second data processing module may be an integrated chip or a common circuit used by a general purpose controller, and the second communication module may be a controller area network (Controller Area Network, CAN) network with a dedicated CAN chip. The second input-output interface may be, but is not limited to, a universal asynchronous serial data transmission (Tx) port, a universal asynchronous serial data reception (Rx) port, or the like.
The first switch set 140 is electrically connected between the power module 110 and the first controller 120, and the power module 110 supplies power to the first controller 120 through the first switch set 140. The first switch set 140 includes a sensing switch 141 and a first switch 142, the sensing switch 141 is electrically connected between the power module 110 and the first controller 120, and the first switch 142 is electrically connected between the power module 110 and the first controller 120.
The inductive switch 141 is electrically connected between the power module 110 and the first controller 120, and the power module 110 can wake up the first controller 120 through the inductive switch 141. The inductive switch 141 may be a switch controlled by an external force, for example, the inductive switch 141 may be controlled by an electric car key or a button. It can be understood that when the electric automobile key is inserted into the key hole in a rotating manner and twisted by a certain angle, the inductive switch 141 can be closed, the power module 110 is conducted with the first controller 120, and the power module 110 wakes up the first controller 120 through the inductive switch 141; when the start button of the electric automobile is pressed by the driver, the inductive switch 141 is closed, the power module 110 is conducted with the first controller 120, and the power module 110 wakes up the first controller 120 through the inductive switch 141.
The first switch 142 is electrically connected between the power module 110 and the first controller 120, and the power module 110 supplies power to the first controller 120 through the first switch 142. The first switch 142 may be, but is not limited to, a relay with auxiliary contacts, a relay without auxiliary contacts, etc.
The second switch 150 is electrically connected between the power module 110 and the second controller 130, and the power module 110 supplies power to the second controller 130 through the second switch 150. The second switch 150 may be, but is not limited to, a relay or the like. The number of the second switches 150 is the same as the number of the second controllers 130, and the second switches 150 are in one-to-one correspondence with the second controllers 130.
It should be understood that the configuration shown in fig. 1 is merely a block diagram of the vehicle control system 10, and that the vehicle control system 10 may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
It should be noted that, in other embodiments of the present invention, the power supply control method provided in the embodiments of the present invention may also be applied to a low voltage distribution box of an electric automobile.
Based on the above-mentioned vehicle control system 10, a possible implementation of a power supply control method is given below, and the implementation subject of the method may be the above-mentioned vehicle control system 10 or a low-voltage distribution box. Referring to fig. 2, the power supply control method mainly includes two processes, one of which is a process of stopping power supply of the power module 110, and the other of which is a process of recovering power supply of the power module 110, and the two processes are continuously circulated in the use process of the electric automobile.
Referring to fig. 3, fig. 3 shows a flowchart of stopping power supply to the power module 110 according to an embodiment of the invention.
S11, when the first controller 120 detects that the inductive switch 141 is turned off, the first controller 120 sends a sleep instruction to all the second controllers 130, so that all the second controllers 130 sequentially enter a to-be-sleep state and a sleep state.
In the embodiment of the present invention, referring to fig. 4, the to-be-dormant state may be a state before entering the dormant state, and it is understood that when the second controller 130 is in the to-be-dormant state, the second controller 130 only allows to receive or transmit specific one or more information, and does not process other information. For example, when the second controller 130 is in the to-be-dormant state, it only allows the active reporting of the dormant information to the first controller 120, or only allows the second controller 130 to receive the state detection signal sent by the first controller 120, and returns the parameters of the second controller 130 according to the state detection signal; when the first controller 120 is in the sleep-waiting state, the first controller 120 only allows the first controller 120 to send an off control command to the first switch 142 to turn off the first switch 142.
When the first controller 120 detects that the sensing switch 141 is turned off, the first controller 120 sends a sleep command to all the second controllers 130 so that all the second controllers 130 enter a to-be-sleep state and a sleep state in sequence, which can be understood that when the driver stops driving and pulls out the car key, or the driver triggers a stop driving button, or otherwise turns off the sensing switch 141, the first controller 120 detects the state of the sensing switch 141 in real time or at a certain time interval (for example, 0.1 s), and detects that the sensing switch 141 is turned off, the first controller 120 sends a sleep command to all the first controllers 120 so that all the second controllers 130 enter the to-be-sleep state, and when the second controller 130 sends specific information to the first controller 120, the second controller 130 enters the sleep state.
S12, judging whether the second controller 130 is in a dormant state.
In the embodiment of the present invention, the step of determining whether the second controller 130 is in the sleep state may be understood that the first controller 120 receives the sleep information reported by the second controller 130, and determines that the second controller 130 is in the sleep state when the sleep information is received, specifically, the sleep information may be specific information indicating that the second controller 130 is about to enter the sleep state from the to-be-sleep state, when the second controller 130 starts to enter the sleep state, and stops interaction with other functional modules connected with the second controller, the sleep information may be automatically generated, and before entering the sleep state, the sleep information is sent to the first controller 120, and when the first controller 120 receives the sleep information actively reported by the second controller 130, the second controller 130 may be considered to be in the sleep state.
The step of generating the sleep information by the second controller 130 may be understood as a case where the second data processing module obtains the data sent out or received by the second input/output interface, and when the data sent out or received by the second input/output interface is not obtained in a continuous time (for example, 10 s), the second controller 130 may be considered to be in a state to be dormant, and the second data processing module generates the sleep information.
In other embodiments of the present invention, the step of determining whether the second controller 130 is in the sleep state may be further understood that the first controller 120 sends a state detection signal to the second controller 130, so that the second controller 130 returns the second control parameter according to the state detection signal; the first controller 120 receives the second control parameter, compares the second control parameter with a preset sleep parameter, and determines that the second controller 130 is in the sleep state when the second control parameter is consistent with the preset sleep parameter. The second control parameter may be a case that the second input/output interface of the second controller 130 outputs data within a preset time interval. The first controller 120 sends a status detection signal to the second controller 130, when the second controller 130 receives the status detection signal, the second controller 130 detects a second control parameter of itself and sends the second control parameter to the first controller 120, the first controller 120 compares the second control parameter with a preset sleep parameter, and when the second control parameter is consistent with the preset sleep parameter, the second controller 130 is considered to be in a sleep state.
For example, the second data processing module obtains the condition that the second input/output interface sends or receives data in and out of the preset time interval. If one interface sends data inside and outside a preset time interval, setting the parameter corresponding to the interface as 1; if one interface receives data in a preset time interval, setting the parameter corresponding to the interface as 1; if one interface sends data out and receives data in a preset time interval, setting the corresponding parameter of the interface as 1; if one interface does not send data out or receive data in a preset time interval, setting the parameter corresponding to the interface to 0. All interfaces together form a second input/output interface, and parameters corresponding to all interfaces together form a second control parameter. If the second input/output interface includes 4 interfaces in total, where the parameter corresponding to the first interface is 0, the parameter corresponding to the second interface is 0, the parameter corresponding to the third interface is 0, and the parameter corresponding to the fourth interface is 0, then the second control parameter is 0000, the preset dormancy parameter is 0000, the first controller 120 compares the second control parameter with the preset dormancy parameter, and if the second control parameter is consistent with the preset dormancy parameter, the second controller 130 is considered to be in the dormancy state.
S13, when any of the second controllers 130 is in the sleep state, the first controller 120 controls the power module 110 to stop supplying power to the second controller 130.
In the embodiment of the present invention, when the first controller 120 determines that any one of the second controllers 130 is in the sleep state, the power supply module 110 is controlled to stop supplying power to the second controller 130. Specifically, the first controller 120 may control the second switch 150 electrically connected to the second controller 130 to be turned off, and the power module 110 stops supplying power to the second controller 130.
For example, the first controller 120 is electrically connected to 3 second controllers 130, the 3 second controllers 130 are a 1# second controller, a 2# second controller, and a 3# second controller, the 1# second controller is electrically connected to the power module 110 through a 1# second switch, the 2# second controller is electrically connected to the power module 110 through a 2# second switch, the 3# second controller is electrically connected to the power module 110 through a 3# second switch, and the 1# second switch, the 2# second switch, and the 3# second switch are all electrically connected to the first controller 120. When the first controller 120 determines that the 1# second controller and the 3# second controller are in the sleep state, the first controller 120 controls the 1# second switch and the 2# second switch to be turned off, and the power module 110 stops supplying power to the 1# second controller and the 3# second controller.
S14, when all the second controllers 130 are in the sleep state, the first controller 120 controls the power module 110 to stop supplying power to all the second controllers 130.
In the embodiment of the present invention, according to the manner of step S13, when all the second controllers 130 are in the sleep state, the first controller 120 controls all the second switches 150 to be turned off, and the power module 110 stops supplying power to all the second controllers 130.
It should be noted that, after the first controller 120 controls all the second switches 150 to be turned off, the first controller 120 enters the self-sleep state, i.e. enters the standby sleep state and the sleep state sequentially.
S15, judging whether the first controller 120 is in a state to be dormant.
In the embodiment of the present invention, the step of determining whether the first controller 120 is in the to-be-dormant state may be understood as determining that the first controller 120 is in the to-be-dormant state when the first data processing module does not acquire the first control parameter sent or received by the first input/output interface within the preset time interval. The first control parameter may be a case where the first input output interface of the first controller 120 transmits data or receives data. When it is determined that the first controller 120 is in the to-be-dormant state, step S16 is performed.
When the first data processing module does not acquire the first control parameter sent or received by the first input/output interface within the preset time interval, the step of determining that the first controller 120 is in the to-be-dormant state may be understood that the first data processing module does not acquire data sent by the first input/output interface or data received by the first input/output interface within the preset time interval, that is, in the preset time interval, the first controller 120 does not perform information interaction with any external module, and then the first controller 120 may be considered to be in the to-be-dormant state. It is understood that the first controller 120 is in the dormant state after the first controller 120 controls all the second switches 150 to be turned off.
S16, the first controller 120 controls the power module 110 to stop supplying power to the first controller 120.
In an embodiment of the present invention, when the first data processing module determines that the first controller 120 is in the state to be dormant, the power module 110 stops supplying power to the first controller 120. Specifically, the first data processing module sends an off control command to the first switch 142 through the first input/output interface, and the power module 110 stops supplying power to the first switch 142.
Thus, the power module 110 stops supplying power to the first controller 120 and all the second controllers 130, so that the power supply stopping action of the power module 110 is completed, the consumption of the static power supply is eliminated, and the power resource is saved.
Referring to fig. 5, fig. 5 shows a flowchart of the power module 110 for recovering power according to an embodiment of the invention.
S21, when the external force triggers the first switch set 140 to be closed, the power module 110 supplies power to the first controller 120.
In the embodiment of the present invention, when the driver starts driving and inserts the vehicle key, or the driver triggers the start driving button, or otherwise triggers the first switch group 140 to be closed, the power module 110 is turned on with the first controller 120, and the power module 110 supplies power to the first controller 120. Specifically, when the external force triggers the first switch group 140 to be closed, the power module 110 supplies power to the first controller 120, which can be understood that when the external force triggers the inductive switch 141 to be closed, the power module 110 wakes up the first controller 120 through the inductive switch 141; the first controller 120 controls the first switch 142 to be closed, and the power module 110 supplies power to the first controller 120.
For example, when the driver inserts a key and turns the sensing switch 141 so that the sensing switch 141 is closed, the power module 110 supplies a small amount of power to the first controller 120 through the sensing switch 141 to restore a part of the functions of the first controller 120, and when the part of the functions of the first controller 120 are restored, the first controller 120 controls the first switch 142 to be closed, the power module 110 is conducted with the first controller 120 through the first switch 142, and normal power supply to the first controller 120 is restored by the power module 110, and all functions of the first controller 120 are restored.
By providing the inductive switch 141 and the first switch 142, if the inductive switch 141 is damaged during driving, the power module 110 can still normally supply power through the first switch 142, so that the driving process is not affected.
S22, the first controller 120 controls all the second switches 150 to be closed, and the power module 110 supplies power to all the second controllers 130.
In the embodiment of the present invention, when the first controller 120 resumes normal power supply, the first controller 120 controls all the second switches 150 to be closed, the power module 110 is turned on with the second controllers 130 through the second switches 150, and the power module 110 resumes power supply to all the second controllers 130.
It should be noted that, in the step S22, the first controller 120 may detect the state of each second controller 130, and control the second switch 150 electrically connected to the second controller 130 to be closed only when detecting that the state of the second controller 130 is normal, so as to ensure the safe power supply of the power module 110 to the second controller 130.
Thus, the power module 110 resumes supplying power to the first controller 120 and all the second controllers 130, and the power module 110 resumes supplying power is completed.
Compared with the prior art, the embodiment of the invention has the following advantages:
Firstly, by setting the inductive switch 141 and the first switch 142, if the inductive switch 141 is damaged in the driving process, the power module 110 can still normally supply power through the first switch 142, so that the driving process is not affected, and the working stability of the electric automobile is improved.
Secondly, when all the second controllers 130 are in the sleep state, the first controller 120 controls the power module 110 to stop supplying power to all the second controllers 130, and when the first controller 120 is in the sleep state, the power module 110 is controlled to stop supplying power to the first controller 120, so that the power module 110 stops supplying power to all the controllers, the consumption of the static power is eliminated, and the power resource is saved.
In summary, the embodiment of the invention provides a power supply control method and a vehicle control system, wherein the method includes that when all second controllers are in a dormant state, a first controller controls a power supply module to stop supplying power to all second controllers, and when the first controller is in a dormant state, the first controller controls the power supply module to stop supplying power to the first controller. Compared with the prior art, the embodiment of the invention has the following advantages: when all the second controllers are in the dormant state, the first controller controls the power supply module to stop supplying power to all the second controllers, and when the first controller is in the dormant state, the power supply module is controlled to stop supplying power to the first controller, so that the power supply module stops supplying power to all the controllers, the consumption of a static power supply is eliminated, the power resource is saved, and the electric automobile is ensured to be capable of recovering the power supply to work normally.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by 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 protection scope of the present application.
Claims (9)
1. The power supply control method is characterized by being applied to a vehicle control system, wherein the vehicle control system comprises a power supply module, a first switch group, at least one second switch, a first controller and at least one second controller, the first controller is electrically connected with the power supply module through the first switch group, each second controller is electrically connected with the power supply module through one second switch, the first controller is electrically connected with each second controller, and the first controller is electrically connected with all second switches; the method comprises the following steps:
When the first switch assembly is triggered to be closed by external force, the power supply module supplies power to the first controller;
the first controller controls all the second switches to be closed, and the power supply module supplies power to all the second controllers;
when all the second controllers are in a dormant state, the first controller controls the power supply module to stop supplying power to all the second controllers, and when the first controller is in a state to be dormant, the first controller controls the power supply module to stop supplying power to the first controller.
2. The method according to claim 1, wherein the method further comprises:
when any one of the second controllers is in a dormant state, the first controller controls the power module to stop supplying power to the second controller.
3. The method of claim 1, wherein the first switch set comprises a first switch and an inductive switch, the first controller is electrically connected to the power module through the first switch, and the first controller is electrically connected to the power module through the inductive switch; when the first switch assembly is triggered to be closed by external force, the power supply module supplies power to the first controller, and the method comprises the following steps:
When the external force triggers the induction switch to be closed, the power supply module wakes up the first controller through the induction switch;
the first controller controls the first switch to be closed, and the power module supplies power to the first controller.
4. A method according to claim 3, characterized in that the method further comprises:
When the first controller detects that the inductive switch is disconnected, the first controller sends dormancy instructions to all the second controllers so that all the second controllers sequentially enter a waiting dormancy state and a dormancy state.
5. The method of claim 1, wherein the first controller comprises a first data processing module, a first communication module, and a first input-output interface, the first data processing module in communication with the first input-output interface through the first communication module, the first input-output interface in electrical communication with both the second controller and the second switch, the method further comprising:
And when the first data processing module does not acquire the first control parameter sent or received by the first input/output interface within a preset time interval, the first controller is judged to be in a to-be-dormant state.
6. The method according to claim 1, wherein the method further comprises:
And the first controller receives the dormancy information reported by the second controller and judges that the second controller is in a dormancy state when receiving the dormancy information.
7. The method according to claim 1, wherein the method further comprises:
The first controller sends a state detection signal to the second controller so that the second controller returns a second control parameter according to the state detection signal;
The first controller receives the second control parameter, compares the second control parameter with a preset dormancy parameter, and judges that the second controller is in a dormancy state when the second control parameter is consistent with the preset dormancy parameter.
8. The vehicle control system is characterized by comprising a power supply module, a first switch group, at least one second switch, a first controller and at least one second controller, wherein the first controller is electrically connected with the power supply module through the first switch group, each second controller is electrically connected with the power supply module through one second switch, the first controller is electrically connected with each second controller, and the first controller is electrically connected with all second switches;
When the first switch assembly is triggered to be closed by external force, the power supply module is used for supplying power to the first controller;
The first controller is used for controlling all the second switches to be closed, and the power supply module is used for supplying power to all the second controllers;
And the first controller is used for controlling the power supply module to stop supplying power to all the second controllers when all the second controllers are in a dormant state, and controlling the power supply module to stop supplying power to the first controller when the first controller is in a state of waiting to be dormant.
9. The vehicle control system of claim 8, wherein the first controller is further configured to control the power module to stop supplying power to any of the second controllers when the second controllers are in a sleep state.
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| CN201910756563.6A CN110406379B (en) | 2019-08-16 | 2019-08-16 | Power supply control method and vehicle control system |
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