CN118163642A

CN118163642A - Power supply system, sleep awakening control method, medium and program product

Info

Publication number: CN118163642A
Application number: CN202410492374.3A
Authority: CN
Inventors: 李�杰; 于彬彬
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2024-04-23
Filing date: 2024-04-23
Publication date: 2024-06-11

Abstract

The invention discloses a power supply system, a control method for dormancy awakening, a medium and a program product, belonging to the technical field of electric automobile charging, wherein the power supply system comprises: the system comprises a CP signal receiving module, a wake-up chip, an auxiliary source control circuit and a control unit; the CP signal receiving module is used for establishing electrical connection with the external charging pile and receiving a CP signal sent by the external charging pile; the wake-up chip is in communication connection with the CP signal receiving module and is used for identifying the conversion state of the CP signal and selecting whether to output a wake-up signal according to the conversion state; the auxiliary source control circuit is in communication connection with the wake-up chip and is used for outputting a power supply signal according to a wake-up signal sent by the wake-up chip; the control unit is electrically connected with the auxiliary source control circuit and is used for receiving the power supply signal output by the auxiliary source control circuit and sending a wake-up message to the vehicle controller according to the power supply signal. The invention solves the problem of wasting electric energy caused by frequent awakening in the charging process of the electric vehicle.

Description

Power supply system, sleep awakening control method, medium and program product

Technical Field

The invention relates to the technical field of electric automobile charging, in particular to a power supply system, a sleep awakening control method, a medium and a program product.

Background

The electric automobile is a vehicle which uses a vehicle-mounted battery as power and uses a motor to drive wheels to run and meets various requirements of road traffic and safety regulations. The charging mode of the battery, that is, the charging of the ac charging pile, is not uniform in product performance and functional characteristics of the charging pile currently on the market, and abnormal state jump of a CP (Control Pilot) signal can cause the power supply system to wake up the whole vehicle in scenes such as the reserved charging process, after the charging is finished, after the gun is pulled out of the vehicle, and the user does not drive the vehicle at this time, so that the energy consumption of the whole vehicle is wasted, the driving mileage is reduced, and the complaints of the user are caused. In some technologies, when a user inserts a charging gun into a vehicle, the charging gun sends a wake-up signal to wake up the vehicle, then a special capacitor circuit is used for judging whether the vehicle is fully charged, and when the capacitor circuit is fully charged, the vehicle is fully charged, so that the vehicle is stopped from being awakened. Although this type of technology can reduce the unnecessary wake-up of the vehicle to a certain extent, most of the charging piles start charging immediately without being connected to the vehicle, some setting and triggering operations are required, and the operation such as gun pulling and the like can wake up the vehicle, so that the above technology still keeps the vehicle awake for a long time, and the complexity of the power supply design is increased through a special capacitor circuit, and the research of the related technology is still needed to be improved.

Disclosure of Invention

In view of the above, the present invention provides a power supply system, a method for controlling sleep wakeup, a medium and a program product for solving the problem of wasting electric energy due to frequent wakeup in the charging process of an electric vehicle.

In a first aspect, the present invention provides a power supply system comprising: the system comprises a CP signal receiving module, a CP sampling circuit, a wake-up chip, an auxiliary source control circuit and a control unit; the CP signal receiving module is used for establishing electrical connection with the external charging pile and receiving a CP signal sent by the external charging pile; the CP sampling circuit is electrically connected with the CP signal receiving module, the wake-up chip is electrically connected with the CP sampling circuit, and the wake-up chip is used for sampling the CP signal through the CP sampling circuit, identifying the conversion state of the CP signal and selecting whether to output the wake-up signal according to the conversion state; the auxiliary source control circuit is electrically connected with the wake-up chip and is used for outputting a power supply signal according to a wake-up signal sent by the wake-up chip; the control unit is electrically connected with the auxiliary source control circuit and is used for receiving the power supply signal output by the auxiliary source control circuit and sending a wake-up message to the vehicle controller according to the power supply signal.

According to the technical means, the invention identifies the conversion state of the CP signal through the awakening chip, and defines some states capable of awakening the vehicle and states incapable of awakening the vehicle according to the difference of the conversion states, so that the CP awakening chip is forbidden to output the awakening signal to awaken the whole vehicle when the vehicle is not required to be awakened; when the vehicle needs to be awakened, a CP awakening signal is triggered by the CP awakening chip to awaken the whole vehicle; the vehicle is guaranteed to be in a dormant state for more time, and electric energy waste is reduced.

In an alternative embodiment, the external charging pile comprises a command module and a charging gun, wherein the command module is used for inputting a charging command, and the conversion state comprises a state of whether the charging command is received or not and a state of whether the gun is inserted or not, which are indicated by the CP signal.

According to the technical means, aiming at the charging pile comprising the instruction module and the charging gun, when a user inserts and withdraws the charging gun into and from a vehicle and inputs a charging cancellation instruction, the corresponding CP signal conversion state is detected, so that a scene which does not need to be charged or standby is identified, further, the output of a wake-up signal is avoided, the electric energy is saved, and the operation of the charging pile is accurately adapted.

In an alternative embodiment, the CP sampling circuit is further configured to convert the received CP signal into a power signal that wakes up the chip.

According to the technical means, the CP voltage dividing circuit provided by the invention can convert the CP signal of the charging pile into the voltage signal matched with the vehicle power supply system, so that the suitability and reliability of vehicle charging are improved, meanwhile, the CP sampling circuit distributes two paths of received CP signals, one path is used for state identification, and the other path is used for supplying power to the wake-up chip, so that the power supply does not need to be independently set up for the wake-up chip in the power supply system, and the hardware configuration cost is reduced.

In a second aspect, the present invention provides a method for controlling sleep wakeup, which is applied to a power supply system, and the method includes: the CP signal receiving module receives the CP signal and transmits the CP signal to the CP sampling circuit; sampling the CP signal through a CP sampling circuit to obtain a sampling signal; identifying the conversion state of the CP signal according to the sampling signal by the wake-up chip; when the identification result is a first conversion state allowing the vehicle to be awakened, outputting an awakening signal to an auxiliary source control circuit through an awakening chip; and when the identification result is a second conversion state which does not allow the vehicle to be awakened, controlling the awakening chip to prohibit the awakening signal from being output to the auxiliary source control circuit.

According to the technical means, the transition states of the CP signals are identified through the wake-up chip, and a plurality of first transition states capable of waking up the vehicle and a plurality of second transition states incapable of waking up the vehicle are defined according to the difference of the transition states, so that the wake-up chip is used for prohibiting the transmission of messages for waking up the vehicle when the vehicle is not required to be waken up, the vehicle is ensured to be in a dormant state, and the electric energy waste is reduced.

In an alternative embodiment, identifying the transition state of the CP signal from the sampled signal by the wake-up chip includes: and identifying whether the charging instruction is received or not and whether the conversion state of the gun is inserted or not, and dividing a first conversion state allowing the vehicle to be awakened and a second conversion state not allowing the vehicle to be awakened in the conversion states.

In an alternative embodiment, identifying whether the CP signal indicates that a charging command is received and whether the gun is in a conversion state, and dividing a first conversion state allowing the vehicle to be awakened and a second conversion state not allowing the vehicle to be awakened from the conversion states includes: identifying whether a CP invalid signal in a CP signal jumps to a CP normal electricity effective signal, whether the CP invalid signal jumps to one of a CP pulse effective signal and a CP normal electricity effective signal jumps to the CP pulse effective signal, wherein the CP invalid signal indicates a state signal which is not inserted into a gun and does not indicate charging, the CP normal electricity effective signal is a state signal generated when the gun is inserted into the gun, and the CP pulse effective signal is a state signal generated when a charging instruction is received; the method comprises the steps of dividing a transformation state of jumping an existing CP invalid signal into a CP normal electricity valid signal, jumping the CP invalid signal into a CP pulse valid signal or jumping the CP normal electricity valid signal into the CP pulse valid signal into a first transformation state; identifying whether one of the CP normal electricity effective signal is jumped to the CP ineffective signal, the CP pulse effective signal is jumped to the CP ineffective signal and the CP pulse effective signal is jumped to the CP normal electricity effective signal in the CP signal; and dividing the conversion state of the CP normal electricity effective signal into a CP ineffective signal, the CP pulse effective signal into a CP ineffective signal or the CP pulse effective signal into a CP normal electricity effective signal into a second conversion state.

According to the technical means, different CP signal types are distinguished for different operations, wherein the CP invalid signal represents a state signal which is not used for indicating charging by a non-gun, the CP normal electricity valid signal represents a state signal generated when a gun is inserted, and the CP pulse valid signal represents a state signal generated when a charging instruction is received. Therefore, according to the change of the signal state, the embodiment jumps the CP-invalid signal to the CP normal-electric effective signal, jumps the CP-invalid signal to the CP-pulse effective signal and jumps the CP normal-electric effective signal to the CP-pulse effective signal to identify the CP-pulse effective signal as the first conversion state which needs to be charged and needs to wake up the automobile, and jumps the CP normal-electric effective signal to the CP-invalid signal, jumps the CP-pulse effective signal to the CP-pulse effective signal and jumps the CP-pulse effective signal to identify the CP normal-electric effective signal as the second conversion state which is charged and does not need to wake up the automobile.

In an alternative embodiment, the CP-inactive signal, the CP-pulse active signal and the CP-constant active signal are respectively identified by a preset level detection threshold and a signal type, the CP-inactive signal is a signal of a direct current signal type and a level lower than the CP-inactive level threshold, the CP-constant active signal is a signal of a direct current signal type and a level higher than the CP-constant level threshold, and the CP-pulse active signal is a signal of a pulse width modulation and demodulation signal type.

According to the technical means, the CP invalid signal and the CP normal electricity valid signal are respectively identified through the direct current type and the corresponding voltage, and the CP pulse valid signal is identified only through the pulse width modulation and demodulation signal type, so that the identification accuracy of the CP invalid signal, the CP pulse valid signal and the CP normal electricity valid signal can be ensured, and the accuracy of wake-up control is improved.

In an alternative embodiment, the CP pulse level threshold is a voltage value of an equivalent transition of the CP pulse valid signal; the CP invalid level threshold and the CP normal level threshold are obtained through the following steps: simulating a CP signal output by the charging pile by a preset minimum duty ratio; sampling the analog CP signal to obtain a CP invalid level threshold; acquiring a standard voltage and a voltage fluctuation lower limit value of a CP signal; the CP constant level threshold is determined based on the difference between the standard voltage and the voltage fluctuation lower limit.

According to the technical means, the CP invalid level threshold value is determined based on the CP signal output by the analog charging pile with the preset minimum duty ratio, and the CP constant level threshold value is determined based on the difference value between the standard voltage and the voltage fluctuation lower limit value, so that various level jump states can be effectively detected in the full voltage range, detection signals are clearer, and detection accuracy is improved. And the CP invalid level threshold is defined according to the preset minimum duty ratio of the CP signal, is smaller than the equivalent voltage of the CP pulse signal and the CP normal electric level threshold, can effectively avoid the situation of false wake-up in the process that the CP pulse effective signal jumps to the CP normal electric effective signal, and improves the accuracy of wake-up control.

In an alternative embodiment, the method further comprises: when the wake-up chip receives the CP normal electricity effective signal and the CP pulse effective signal at the same time in the CP ineffective signal state, the CP pulse effective signal is used for preferentially identifying the conversion state.

According to the technical means, if a user firstly sends a charging instruction to the charging pile and then inserts the gun to the vehicle, the wake-up chip can directly and simultaneously receive the CP normal electricity effective signal and the CP pulse effective signal to preferentially identify the conversion state by the CP pulse effective signal, so that the timely wake-up of the power supply system is ensured, the charging state is immediately entered, and the charging efficiency is improved.

In an alternative embodiment, the method further comprises: after detecting that the CP signal jumps to the CP normal electricity effective signal through the wake-up chip, if the CP pulse effective signal is not received within the preset time, the control unit enters dormancy.

According to the technical means, when the wake-up chip detects that the current CP normal power level state is detected, if the CP pulse level indication is not received within the preset time to start charging the vehicle, the power supply system does not wait any more, and the wake-up chip controls the power supply system to enter the sleep state first, so that the electric energy waste of the vehicle is further reduced.

In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of the first aspect or any of its corresponding embodiments.

In a fifth aspect, the invention provides a computer program product comprising computer instructions for causing a computer to perform the method of the first aspect or any of its corresponding embodiments.

The technical scheme provided by the invention has the following advantages:

(1) According to the technical means, the invention identifies the conversion state of the CP signal through the awakening chip, and defines some states capable of awakening the vehicle and states incapable of awakening the vehicle according to the difference of the conversion states, so that the CP awakening chip is forbidden to output the awakening signal to awaken the whole vehicle when the vehicle is not required to be awakened; when the vehicle needs to be awakened, a CP awakening signal is triggered by the CP awakening chip to awaken the whole vehicle; the vehicle is guaranteed to be in a dormant state for more time, and electric energy waste is reduced.

(2) According to the technical means, aiming at the charging pile comprising the instruction module and the charging gun, when a user inserts and withdraws the charging gun into and from a vehicle and inputs a charging cancellation instruction, the corresponding CP signal conversion state is detected, so that a scene which does not need to be charged or standby is identified, further, the output of a wake-up signal is avoided, the electric energy is saved, and the operation of the charging pile is accurately adapted.

(3) According to the technical means, the CP voltage dividing circuit provided by the invention can convert the CP signal of the charging pile into the voltage signal matched with the vehicle power supply system, so that the suitability and reliability of vehicle charging are improved, meanwhile, the CP sampling circuit distributes two paths of received CP signals, one path is used for state identification, and the other path is used for supplying power to the wake-up chip, so that the power supply does not need to be independently set up for the wake-up chip in the power supply system, and the hardware configuration cost is reduced.

(4) According to the technical means, different CP signal types are distinguished for different operations, wherein the CP invalid signal represents a state signal which is not used for indicating charging by a non-gun, the CP normal electricity valid signal represents a state signal generated when a gun is inserted, and the CP pulse valid signal represents a state signal generated when a charging instruction is received. Therefore, according to the change of the signal state, the embodiment jumps the CP-invalid signal to the CP normal-electric effective signal, jumps the CP-invalid signal to the CP-pulse effective signal and jumps the CP normal-electric effective signal to the CP-pulse effective signal to identify the CP-pulse effective signal as the first conversion state which needs to be charged and needs to wake up the automobile, and jumps the CP normal-electric effective signal to the CP-invalid signal, jumps the CP-pulse effective signal to the CP-pulse effective signal and jumps the CP-pulse effective signal to identify the CP normal-electric effective signal as the second conversion state which is charged and does not need to wake up the automobile.

(5) According to the technical means, the CP invalid signal and the CP normal electricity valid signal are respectively identified through the direct current type and the corresponding voltage, and the CP pulse valid signal is identified only through the pulse width modulation and demodulation signal type, so that the identification accuracy of the CP invalid signal, the CP pulse valid signal and the CP normal electricity valid signal can be ensured, and the accuracy of wake-up control is improved.

(6) According to the technical means, the CP invalid level threshold value is determined based on the CP signal output by the analog charging pile with the preset minimum duty ratio, and the CP constant level threshold value is determined based on the difference value between the standard voltage and the voltage fluctuation lower limit value, so that various level jump states can be effectively detected in the full voltage range, detection signals are clearer, and detection accuracy is improved. And the CP invalid level threshold is defined according to the preset minimum duty ratio of the CP signal, is smaller than the equivalent voltage of the CP pulse signal and the CP normal electric level threshold, can effectively avoid the situation of false wake-up in the process that the CP pulse effective signal jumps to the CP normal electric effective signal, and improves the accuracy of wake-up control.

(7) According to the technical means, if a user firstly sends a charging instruction to the charging pile and then inserts the gun to the vehicle, the wake-up chip can directly and simultaneously receive the CP normal electricity effective signal and the CP pulse effective signal to preferentially identify the conversion state by the CP pulse effective signal, so that the timely wake-up of the power supply system is ensured, the charging state is immediately entered, and the charging efficiency is improved.

(8) According to the technical means, when the wake-up chip detects that the current CP normal power level state is detected, if the CP pulse level indication is not received within the preset time to start charging the vehicle, the power supply system does not wait any more, and the wake-up chip controls the power supply system to enter the sleep state first, so that the electric energy waste of the vehicle is further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power supply system according to an embodiment of the invention;

FIG. 2 is another schematic diagram of a power supply system according to an embodiment of the invention;

FIG. 3 is a flow chart of a method for controlling sleep wakeup according to an embodiment of the present invention;

FIG. 4 is another flow chart of a method for controlling sleep wakeup according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of a configuration procedure of a CP signal detection threshold according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a configuration of a CP signal detection threshold according to an embodiment of the present invention;

FIG. 7 is another flow chart of a method for controlling sleep wakeup according to an embodiment of the present invention;

FIG. 8 is another flow chart of a method for controlling sleep wakeup according to an embodiment of the present invention;

fig. 9 is another flow chart of a sleep wakeup control method according to an embodiment of the present invention.

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. 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.

According to an embodiment of the present invention, there is provided a power supply system 2 including: the system comprises a CP signal receiving module 0, a CP sampling circuit 13, a wake-up chip 14, an auxiliary source control circuit 15 and a control unit 16; the CP signal receiving module 0 is used for establishing electrical connection with the external charging pile and receiving a CP signal sent by the external charging pile; the CP sampling circuit 13 is electrically connected with the CP signal receiving module 0, the wake-up chip 14 is electrically connected with the CP sampling circuit 13, and the wake-up chip 14 is used for sampling the CP signal through the CP sampling circuit 13, identifying the conversion state of the CP signal and selecting whether to output the wake-up signal according to the conversion state; the auxiliary source control circuit 15 is electrically connected with the wake-up chip 14 and is used for outputting a power supply signal according to a wake-up signal sent by the wake-up chip 14; the control unit 16 is electrically connected to the auxiliary source control circuit 15, and is configured to receive a power supply signal output by the auxiliary source control circuit 15, and send a wake-up message to the vehicle controller 18 according to the power supply signal.

Specifically, as shown in fig. 1, the power supply system 2 provided in the embodiment of the present invention is a power supply system deployed in an electric vehicle and used for managing charging of the electric vehicle, and uses the CP signal receiving module 0 as an external interface to be electrically connected with a charging post, and when a charging gun of the charging post is inserted into a charging socket of the vehicle, the power supply system 2 is connected with the external charging post, so as to receive a CP signal and an electrical signal input by the charging gun. In some alternative embodiments, CP signal receiving module 0 may include CP voltage dividing circuit 12 and charging socket 5, where CP voltage dividing circuit 12 is configured to divide the received CP signal, and may be capable of converting the CP signal of charging stake 1 into a voltage signal matched with vehicle power supply system 2, so as to improve the suitability and reliability of vehicle charging. In this embodiment, the wake-up chip 14 is disposed in the power supply system 2, and the wake-up chip 14 identifies and determines the conversion state of the CP signal, and in the wake-up chip 14, by defining in advance whether to allow the vehicle to wake up the conversion state of the CP signal, it is determined whether the conversion state of the CP signal is a signal state that allows the vehicle to wake up or a signal state that does not allow the vehicle to wake up, so as to select whether to output the wake-up signal. When the wake-up chip 14 outputs a wake-up signal, the wake-up signal reaches the auxiliary source control circuit 15, and the auxiliary source control circuit 15 is an auxiliary power supply circuit in the power supply system 2, and is mainly used for being connected with a vehicle battery to output a power supply signal for the control unit 16 in the power supply system 2, when the auxiliary source control circuit 15 receives the wake-up signal, the corresponding power supply signal is output to the control unit 16, so that the control unit 16 is powered on to start working, and a wake-up message is sent to the vehicle controller 18 to enable the vehicle to wake up comprehensively and enter or be ready to enter a charging state. When the wake-up chip 14 determines that the state of the CP signal is a signal state that does not allow the vehicle to be awakened, the wake-up signal is prohibited from being output, the power supply system 2 is dormant, and the vehicle is also in a dormant state. According to the technical means, the invention recognizes the conversion state of the CP signal through the wake-up chip 14, and defines some states capable of waking up the vehicle and states incapable of waking up the vehicle according to the difference of the conversion states, so that when a user does not drive the vehicle and does not need to wake up the vehicle, the wake-up chip 14 cuts off the message of the CP signal for waking up the vehicle by self, thereby ensuring that the vehicle is in a dormant state, solving the problem that the vehicle is woken up by any state fluctuation generated by the CP signal, and obviously reducing the electric energy waste. And the whole scheme is mainly controlled by a program, so that the circuit hard control is reduced, and the complexity of the power supply system 2 is reduced.

In the embodiment of the invention, the wake-up chip, the control unit and the vehicle controller can be a central processing unit, a network processor or a combination thereof. The wake-up chip, the control unit and the vehicle controller may further comprise a hardware chip. The hardware chip may be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general-purpose array logic, or any combination thereof.

In some alternative embodiments, the external charging pile includes an instruction module and a charging gun 4, the instruction module is used for inputting a charging instruction, the wake-up chip 14 is used for judging whether to output a wake-up signal according to a conversion state, and the conversion state is a state that whether to receive the charging instruction and whether to insert the gun, which is indicated by a CP signal received by the wake-up chip 14.

Specifically, in some application scenarios, the charging pile often includes an instruction module and a charging gun 4, where the instruction module is a control module that receives a charging instruction input by a user, for example, as shown in fig. 2, the instruction module may include a charging pile control module 8 and an NFC (NEAR FIELD Communication) module 7, the user measures a charging fee through a charging card, when the user swipes a card at the NFC module 7, a card-swipe signal reaches the charging pile control module 8, and the charging pile control module 8 outputs the charging instruction in response to the card-swipe signal. The present invention is not limited to this example, and for example, the NFC module may be replaced by a two-dimensional code module.

In the embodiment of the invention, the charging pile 1 outputs alternating current to the automobile only when the charging gun 4 is inserted into the automobile and the instruction module receives the charging instruction and meets the two conditions simultaneously, otherwise, the charging gun 4 is inserted into the automobile and only outputs a CP signal to wake the automobile but does not charge the automobile. Based on this, the wake-up chip 14 provided by the invention can recognize whether to receive the charging instruction and whether to insert the gun according to the CP signal, and then wake up the vehicle in the scene of not charging the gun, ending the charging, pulling the gun, and the like, which does not need to drive the vehicle, by limiting the CP signal. According to the technical means, aiming at the charging pile comprising the instruction module and the charging gun 4, when a user inserts and withdraws the charging gun into and from a vehicle and inputs a charging cancellation instruction, the corresponding CP signal conversion state is detected, so that a scene which does not need to be charged or standby is identified, further, the output of a wake-up signal is avoided, the electric energy is saved, and different operations of the charging pile can be accurately adapted.

In some alternative embodiments, the CP sampling circuit 13 is mainly used to convert the received CP signal into a power signal for waking up the chip 14 and a status signal for status recognition. According to the technical means, the CP sampling circuit 13 provided by the present invention distributes the received CP signal into two paths, one path is used for state recognition, and the other path supplies power to the wake-up chip 14, so that no separate power supply is required to be set up for the wake-up chip 14 in the power supply system 2, and the hardware configuration cost is reduced.

In one embodiment, as shown in fig. 2, the process of waking up the car and charging the car according to the CP signal is: CP voltage change of charging pile 1- & gtwake-up chip 14 power supply and sampling comparison- & gtoutput wake-up signal- & gtauxiliary source power supply- & gtwake-up control unit 16- & gtwake-up whole vehicle same network segment controller and gateway- & gtenter charging and complete charging process. The CP signal state of the charging pile 1 is found to change, but when the whole vehicle is not required to wake up, the process is as follows: the voltage change of the charging pile 1CP, the power supply of the wake-up chip 14 and the sampling comparison, the prohibition of the output of the wake-up signal, and the rest of the whole vehicle, so that the whole vehicle does not enter abnormal wake-up.

Referring to fig. 2, the detailed control process is as follows.

When the charging gun is in operation, the charging gun structure comprises a power terminal pin and a signal terminal pin, the charging gun structure is inserted into a charging socket 5 of the electric vehicle 3, the charging socket 5 structure also comprises the power terminal pin and the signal terminal pin, and the CP voltage output by the charging pile 1 is transmitted to the power supply system 2 under the condition that the charging gun 4 and the charging socket 5 are reliably connected; the charging pile 1 is internally provided with an NFC module 7, a charging pile control module 8 and a low-voltage power supply module 9, wherein the NFC module 7 is internally provided with a magnetic ring induction circuit for inducing the card swiping action of a user and transmitting an induction signal thereof to the charging pile control module 8, and the charging pile control module 8 is internally provided with a signal output circuit for transmitting a charging instruction to the low-voltage power supply module 9 after receiving the induction signal issued by the NFC module 7 so as to control the switching of the voltage state thereof; the low voltage power supply module 9 is mainly configured to output a CP voltage signal, for example, when the card swiping operation is not performed, the CP voltage signal is continuously output, and when the card swiping operation is performed, the 12V voltage signal is switched to a 12V PWM (pulse width modulation, pulse width modulation and demodulation) signal, and the CP voltage signal output by the low voltage power supply module 9 is transmitted to the power supply system 2 through the CP signal line 10, the charging gun 4, the charging socket 5, and the charging port CP signal line 11 of the charging pile 1; the power supply system 2 is internally provided with a CP voltage dividing circuit 12, a CP sampling circuit 13, a wake-up chip 14, an auxiliary source control circuit 15 and a control unit 16; the CP voltage dividing circuit 12 is a national standard requirement circuit, and is configured to divide and convert a 12V level signal/12V PWM signal output by the low voltage power supply module 9 into a national standard voltage through the CP voltage dividing circuit 12, for example, into a 9V level signal/9V PWM signal, and send the 9V level signal/9V PWM signal to the CP sampling circuit 13, so as to adapt to an electrical parameter of the power supply system 2; the CP sampling circuit 13 is specifically a chip voltage dividing circuit, which converts a 9V level signal into a 5V level signal to supply power to the wake-up chip 14, and converts the voltage into a chip sampling voltage (the sampling process of the chip voltage is the prior art, and is not described here any more) for CP state confirmation; the wake-up chip 14 determines the CP signal state of the CP sampling circuit 13, determines whether the change state of the CP signal is a first change state that triggers the CP wake-up signal or a second change state that does not trigger the wake-up signal, if the change state is the first change state, the wake-up chip 14 will send the wake-up signal to the auxiliary source control circuit 15, after the auxiliary source control circuit 15 is pulled up by the wake-up signal as an enabling signal, power is supplied to the control unit 16, the power supply system 2 is awakened, and the CP hard wire of the power supply system 2 is awakened as an active wake-up event, and wakes up the vehicle controller 18 inside the electric vehicle 3 through the network management message, so that the whole CP wake-up process is completed. In the second transition state, the wake-up chip 14 prohibits triggering of the wake-up signal, the control unit 16 remains dormant, the power supply system 2 remains dormant, and the electric vehicle 3 and its vehicle controller 18 remain dormant synchronously, so far prohibiting completion of the trigger CP wake-up process.

According to an embodiment of the present invention, there is provided an embodiment of a method for controlling sleep wakeup, and it should be noted that the steps shown in the flowchart of the drawings may be performed in the power supply system provided in the foregoing embodiment, and although a logic sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a sequence different from that herein.

In this embodiment, a method for controlling sleep wakeup is provided, which may be used in the above power supply system, as shown in fig. 3, and the process includes the following steps:

Step S301, a CP signal is received by a CP signal receiving module, and the CP signal is transmitted to a CP sampling circuit;

step S302, sampling a CP signal through a CP sampling circuit to obtain a sampled signal;

Step S303, identifying the conversion state of the CP signal according to the sampling signal by the wake-up chip;

Step S304, when the identification result is a first conversion state allowing the vehicle to be awakened, outputting an awakening signal to an auxiliary source control circuit through an awakening chip;

In step S305, when the identification result is the second transition state in which the wake-up of the vehicle is not allowed, the wake-up chip is controlled to prohibit the wake-up signal from being outputted to the auxiliary source control circuit.

Specifically, the invention identifies the transition state of the CP signal through the wake-up chip arranged in the power supply system, and defines the state capable of waking up the vehicle and the state incapable of waking up the vehicle according to the difference of the transition states, so that the message for waking up the vehicle through the CP signal is cut off through the wake-up chip when the vehicle is not required to be waken up, the vehicle is ensured to be in a dormant state, and the electric energy waste is reduced. Explanation of the relevant principles of the present embodiment may refer to the relevant description of the above system embodiment, and will not be repeated here.

In some alternative embodiments, step S303 includes:

and a step a1, identifying whether a charging instruction is received or not and whether the conversion state of the gun is inserted or not, and dividing a first conversion state allowing the vehicle to be awakened and a second conversion state not allowing the vehicle to be awakened in the conversion states.

Specifically, the explanation of the relevant principles of the present embodiment may refer to the relevant descriptions of the above system embodiments, which are not repeated herein.

In some alternative embodiments, step a1 above includes:

Step b1, identifying whether a CP invalid signal in a CP signal jumps to a CP normal electricity effective signal, whether the CP invalid signal jumps to one of a CP pulse effective signal and a CP normal electricity effective signal jumps to the CP pulse effective signal, wherein the CP invalid signal indicates a state signal which is not indicated to be charged by a gun, the CP normal electricity effective signal is a state signal generated when the gun is inserted, and the CP pulse effective signal is a state signal generated when a charging instruction is received;

step b2, dividing the conversion state of the CP invalid signal into a CP normal electricity valid signal, the CP invalid signal into a CP pulse valid signal or the CP normal electricity valid signal into a CP pulse valid signal into a first conversion state;

Step b3, identifying whether one of the CP normal electricity effective signal is jumped to the CP ineffective signal, the CP pulse effective signal is jumped to the CP ineffective signal and the CP pulse effective signal is jumped to the CP normal electricity effective signal occurs in the CP signals;

And b4, dividing the conversion state of the CP normal electricity effective signal into a CP invalid signal, the CP pulse effective signal into a CP invalid signal or the CP pulse effective signal into a CP normal electricity effective signal into a second conversion state.

Specifically, for an ac charging pile with an instruction module, taking an NFC module as an example, the main application scenario defined by the present invention is shown in the following table:

Table 1.Cp signal scene schematic representation

The CP invalid signal indicates that the non-gun does not indicate a state signal sent by the charging pile when charging is not performed; the CP normal electricity effective signal is a state signal generated when the charging pile is inserted into the automobile; the CP pulse valid signal is a status signal generated when the charging pile receives a charging instruction.

The invention aims to provide a charging awakening scheme with high cost performance, which can ensure that an awakening signal is forbidden to be sent when a charging pile has CP state jump and is not required to awaken the whole vehicle on the basis of not increasing the cost of the system; when the whole vehicle needs to be awakened, an awakening signal is sent, so that the intelligent awakening of the power supply system is realized, the charging cost of a user and the energy consumption of the whole vehicle are reduced, and the user experience is improved. In table 1, a scene of user alternating-current charging is covered, and the power supply system is normally awakened when the power supply system needs to be awakened, and remains dormant when the power supply system does not need to be awakened; especially in the scene ⑤, the problem that the CP is abnormally hopped to wake up the vehicle abnormally may occur in the reserved charging waiting process of the power supply replenishment system and after the charging is finished in the related art, especially the problem that the reserved charging waiting process is periodically and repeatedly triggered, if the vehicle is repeatedly awakened, the battery pack capacity cannot be fully charged, and great waste of charging cost and energy consumption is caused. The embodiment of the invention identifies the conversion states of the conversion from the CP invalid signal to the CP normal electricity valid signal, the conversion from the CP invalid signal to the CP pulse valid signal or the conversion from the CP normal electricity valid signal to the CP pulse valid signal, and identifies the three scenes as the first conversion state needing to wake up the vehicle, thereby facilitating the charging of the vehicle. In addition, the conversion states of the conversion from the CP normal electricity effective signal to the CP ineffective signal, the conversion from the CP pulse effective signal to the CP ineffective signal and the conversion from the CP pulse effective signal to the CP normal electricity effective signal are identified as the second conversion state without waking the vehicle, and the electric energy waste is reduced when the vehicle does not need to be charged or standby.

According to the technical means, different types of CP signals are distinguished for different operations, in the embodiment, according to the change of the signal states, the CP-invalid signal is jumped to the CP normal-electricity valid signal, the CP-invalid signal is jumped to the CP pulse valid signal or the CP normal-electricity valid signal is jumped to the CP pulse valid signal to identify the first conversion state which needs to be charged and needs to wake up the automobile, the CP normal-electricity valid signal is jumped to the CP-invalid signal, the CP pulse valid signal is jumped to the CP invalid signal and the CP pulse valid signal is jumped to the CP normal-electricity valid signal to identify the second conversion state which is the CP normal-electricity valid signal is charged and the abnormal signal is jumped so as not to need to wake up the automobile, and a control method which is particularly used for waking up the automobile and prohibiting the automobile is provided.

In some optional embodiments, the CP-inactive signal, the CP-pulse active signal, and the CP-regular-electricity active signal are identified by preset level detection thresholds and signal types, respectively, as shown in fig. 4, and step S300 is further included before step S301, so that the level detection thresholds and signal types of the CP-inactive signal, the CP-pulse active signal, and the CP-regular-electricity active signal need to be defined, and definition information is imported to the wake-up chip.

Wherein, the signal detection mechanism is defined as follows: the CP-inactive signal is a signal of a direct current signal type and a level lower than a CP-inactive level threshold, the CP-normally-electrically-active signal is a signal of a direct current signal type and a level higher than a CP-normally-electrically-level threshold, and the CP-pulse-active signal is a signal of a pulse width modulation-demodulation signal type.

Specifically, in the embodiment of the invention, the wake-up chip judges the CP invalid signal, the CP pulse valid signal and the CP normal electricity valid signal through the signal state and the level detection threshold value. The CP pulse effective signal is of a pulse width modulation signal type, and the CP ineffective signal and the CP normal electricity effective signal are of direct current type, so that the CP pulse effective signal can be accurately identified according to the pulse signal type. However, the CP-inactive signal and the CP-normally-electrically-active signal are both of a dc type, and need to be identified in combination with the level.

For example, when the CP signal is of a direct current type and the voltage value does not exceed the CP-inactive level threshold, the state of the CP signal is a CP-inactive signal; the CP signal is a CP pulse valid signal when the CP signal is in a PWM (Pulse Width Modulation ) state; when the CP signal is of a direct current type and the voltage value exceeds the CP normal electrical level threshold, the CP signal is a CP normal electrical active signal.

According to the technical means, the CP invalid level threshold is defined to be smaller than the smaller value of the CP pulse level threshold and the CP normal electric level threshold, so that the situation of false wake-up in the process of jumping the CP pulse level to the CP normal electric level can be effectively avoided, and the accuracy of wake-up control is improved.

In some alternative embodiments, the CP pulse level threshold is a voltage value of an equivalent transition of the CP pulse active signal, and the step of obtaining the CP null level threshold and the CP constant level threshold includes:

step c3, simulating the CP signal output by the charging pile with a preset minimum duty ratio;

Step c4, sampling the analog CP signal to obtain a CP invalid level threshold;

step c5, obtaining the standard voltage and the voltage fluctuation lower limit value of the CP signal;

and c6, determining a CP constant level threshold value based on the difference value between the standard voltage and the voltage fluctuation lower limit value.

Specifically, as shown in fig. 5, on the basis of defining the detection threshold in the foregoing embodiment, the embodiment of the present invention further provides a method for determining a specific range of the threshold. The duty ratio of the alternating current PWM signal of the CP signal is adjustable, and the embodiment of the invention determines the CP invalid level threshold based on the CP signal output by the analog charging pile with the preset minimum duty ratio. And, the embodiment of the invention obtains the standard voltage and the standard voltage fluctuation lower limit value of the CP signal, and then determines the CP constant electric level threshold value based on the difference value of the standard voltage and the standard voltage fluctuation lower limit value.

For example, a low-voltage stabilized power supply is connected with a CP voltage dividing circuit, based on the minimum duty ratio of 8% of CP signal output of a charging pile required by the national standard, the 8% pwm duty ratio output of an analog charging pile is measured and recorded, the CP sampling circuit tests a CP threshold value, and then the recorded CP threshold value is defined as a preferred CP invalid level threshold value (the embodiment only uses 8% duty ratio as an example, but not limited thereto, the preset minimum duty ratio of the CP signal can be actually valued according to the application scenario). The configuration can ensure that the total range of the CP invalid threshold is minimum, so that the PWM duty ratio output by the charging pile is covered in the total range, and abnormal awakening is not triggered when the PWM state disappears due to the fact that the CP pulse effective signal jumps to other states.

For example, in a specific embodiment, the standard voltage is 12V, the lower limit value of the voltage fluctuation is-0.6V, the output voltage of the low-voltage regulated power supply is changed from an 8% duty ratio signal to a level signal of 11.4V (taking the standard CP level voltage 12v±0.6v as an example, and 0.6V as the upper limit and lower limit of the voltage fluctuation), the CP sampling circuit is measured and records that the CP sampling circuit tests the CP normal level threshold value (the embodiment is only taken as an example, but not limited to this, the standard CP voltage value needs to be adjusted according to the equipment of the actual application scenario), so that the output range of the CP level signal of the charging pile can be covered in a full range, and the power supply system is normally awakened when the awakening needs to be triggered.

The definition of the CP pulse level threshold may be such that a voltage value converted from the CP pulse effective signal is defined as the CP pulse level threshold. By the technical scheme provided by the embodiment of the invention, various level jump states can be effectively detected in a full voltage range, detection signals are clearer, and detection accuracy is improved.

In addition, in the present embodiment, since the CP-invalid level threshold is a threshold determined under the condition that the CP pulse signal is at a preset minimum duty ratio, the CP pulse level threshold is a voltage value at which the CP pulse valid signal is equivalently converted, and thus the CP-invalid level threshold may be smaller than both the CP pulse level threshold and the CP normal power level threshold. The method has the significance that the problem of abnormally waking up the whole vehicle when the CP pulse level jumps to the CP normal level can be effectively avoided. In addition, the magnitude relation between the CP pulse level threshold and the CP normal electric level threshold is not particularly limited, the CP pulse level threshold is only related to the equivalent voltage of the CP pulse effective signal, if the equivalent voltage of the CP pulse effective signal is larger than the CP normal electric level threshold, the CP pulse level threshold is larger than the CP normal electric level threshold, otherwise, the CP pulse level threshold is smaller than the CP normal electric level threshold, but the magnitude relation between the CP pulse level threshold and the CP normal electric level threshold does not influence policy judgment.

For example, as shown in fig. 6, the CP invalid level threshold is minimum, taking the case that the CP normal level threshold is greater than the CP pulse level threshold. For the process of jumping the CP pulse level to the CP normal electric level, when jumping occurs, the PWM state of the CP signal disappears, the CP signal becomes direct current, and the jumping process can only be identified depending on the voltage, in the process, the situation that the voltage gradually rises from the threshold value of the CP pulse level to the threshold value of the CP normal electric level can occur, and the problem of false triggering and waking can not occur only when the threshold value of the CP invalid level is minimum because the situation is forbidden to wake the vehicle. If the CP-null level threshold is greater than the CP-pulse level threshold, a sub-process of the CP-null level threshold jumping to the CP-constant level threshold is included in the process of gradually increasing the voltage from the CP-pulse level threshold to the CP-constant level threshold, and the sub-process is used for indicating a transition state of waking up the vehicle, so that a problem of false triggering of the vehicle wake-up may occur. Therefore, the CP-invalid level threshold value is defined by the CP signal outputted by the analog charging pile with the preset minimum duty ratio, so that the problem can be effectively solved.

In some optional embodiments, the method for controlling sleep wakeup provided by the present invention further includes the following steps:

And d1, when the wake-up chip receives the CP normal electricity effective signal and the CP pulse effective signal simultaneously in the CP ineffective signal state, the CP pulse effective signal is used for preferentially identifying the conversion state.

Specifically, the step is mainly applied to a scene that a charging instruction is firstly given to a charging pile and then a gun is inserted, for example, a user firstly swipes a card at the charging pile, the action of swiping the card can generate a CP pulse effective signal by default, but the charging gun is not inserted into an automobile, then the user inserts the charging gun into the automobile, and the action of inserting the charging gun into the automobile should theoretically generate the CP constant electricity effective signal. Because the two conditions of card swiping and gun inserting are simultaneously met, the automobile can enter a charging state, and the embodiment of the invention does not need to jump the CP invalid signal to the CP normal electricity valid signal and then to the CP pulse valid signal. The priority of the CP pulse effective signal is higher, the CP ineffective signal is controlled to jump to the CP pulse effective signal, the timely awakening of the power supply system is ensured, the charging state is immediately entered, and the charging efficiency is improved.

And e1, after detecting that the CP signal jumps to the CP normal electricity effective signal through the wake-up chip, if the CP pulse effective signal is not received within the preset time, the control unit enters dormancy.

Specifically, according to the above technical means, when the wake-up chip detects that the current CP normal power level state is detected, if the CP pulse level indication is not received within the preset time to start charging the vehicle, the power supply system does not wait any more, and the control unit automatically enters the sleep state, so that the waste of vehicle electric energy is further reduced.

In order to better illustrate the technical logic of the sleep wakeup control method provided by the embodiment of the invention, based on the method steps provided by the invention, the technical characteristics of the method steps are freely combined, so that the problem of abnormal wakeup of a vehicle can be basically solved under a full charging scene, and some typical practical application scene embodiments are shown in the following.

Typical scenario one: the user did not insert the gun, did not swipe the card → insert the gun (trigger CP signal wake-up).

And J1, defining a CP invalid level threshold, a CP normal power level threshold and a CP pulse level threshold, and incorporating a wake-up chip.

J2, as shown in fig. 7, the NFC module 7 does not sense the card swiping action of the user under the condition that the user does not perform the card swiping action, and the charging pile control module 8 determines that the charging pile 1 does not perform the card swiping.

And J3, the charging gun 4 and the charging socket 5 are inserted and connected reliably by hard wires.

J4, the charging pile control module 8 does not receive an induction signal of a user card swiping action, the low-voltage power supply module 9 is controlled to continuously output a 12V level signal, a CP voltage signal output by the low-voltage power supply module 9 is transmitted to the power supply system 2 through a charging pile CP signal line 10, a charging gun 4, a charging socket 5 and a CP signal line 11 of a charging port, the voltage is divided into a 9V signal through a CP voltage dividing circuit 12 in the power supply system 2 and then is supplied to a CP sampling circuit 13, the CP sampling circuit 13 converts the 9V level signal into a 5V level signal to supply power to the wake-up chip 14, and the voltage is converted into a chip sampling voltage for the wake-up chip 14 to confirm the CP state; the wake-up chip 14 judges the CP signal state of the CP sampling circuit, and the CP signal state jumps from an initial CP invalid signal to a CP normal electricity valid signal;

J5, the wake-up chip 14 judges the voltage state sampled by the CP sampling circuit 13, and judges whether the CP voltage signal meets the following conditions: the CP invalid signal is jumped to a CP normal electricity effective signal, the CP invalid signal is jumped to a CP pulse effective signal or the CP normal electricity effective signal is jumped to a CP pulse effective signal, because the CP invalid signal is jumped to the CP normal electricity effective signal, the CP wake-up signal is triggered;

J6, the wake-up chip 14 triggers a CP wake-up signal to the auxiliary source control circuit 15, and after the auxiliary source control circuit 15 is pulled up by the CP wake-up signal as an enabling signal, the control unit 16 is powered up to wake up the power supply system 2; to this end, the user typically completes the scene one overlay.

Typical scenario two: the user swipes the card without inserting the gun → inserting the gun (triggering CP to wake up).

As shown in fig. 7, J2, the NFC module 7 senses the card swiping action of the user under the condition that the user performs the card swiping action, determines that the charging pile has performed the card swiping, and determines that the result is yes.

H1, the charging gun 4 and the charging socket 5 are inserted and connected reliably by hard wires.

The charging pile control module 8 receives the induction signal of the user card swiping action induced by the NFC module 7, so that the low-voltage power supply module 9 is controlled to continuously output 12V PWM signals preferentially, the 12V PWM signals output by the low-voltage power supply module 9 are transmitted to the power supply system 2 through the charging pile CP signal line 10, the charging gun 4, the charging socket 5 and the charging port CP signal line 11, the voltage is divided by the CP voltage dividing circuit 12 in the power supply system 2 and then is transmitted to the CP sampling circuit 13, and the CP sampling circuit 13 converts the voltage into chip sampling voltage to obtain CP pulse effective signals for CP state confirmation; the wake-up chip 14 judges the CP signal state of the CP sampling circuit, and the CP signal state is jumped from an initial CP invalid signal to a CP pulse valid signal;

H3, the wake-up chip 14 determines the voltage state sampled by the CP sampling circuit 13, and determines whether the CP voltage signal satisfies: the CP invalid signal is jumped to a CP normal electricity effective signal, the CP invalid signal is jumped to a CP pulse effective signal or the CP normal electricity effective signal is jumped to a CP pulse effective signal, because the CP invalid signal is jumped to the CP pulse effective signal, the CP wake-up signal is triggered;

H4, the CP wake-up signal sent by the wake-up chip 14 is sent to the auxiliary source control circuit 15, and after the auxiliary source control circuit 15 is pulled up by the CP wake-up signal as an enabling signal, the control unit 16 is supplied with power to wake-up the power supply system 2; thus, typical scene two coverage is complete.

Typical scenario three: the user has not swiped the card with the gun→has swiped the card with the gun (trigger CP wake-up).

As shown in fig. 8, I1, after the power supply system 2 is awakened by the gun, the power supply system 2 continuously requests the high voltage on the whole vehicle for 10min (for example only, but not limited to, the time can be adjusted according to the user's requirements), during which the power supply system 2 determines whether the charging pile is swiped.

And I2, if the charging pile is long, the card is not swiped, and the power supply system enters dormancy.

I3, judging whether the charging gun is pulled out, and if not, entering a step I3;

And I4, judging whether to swipe a card, if the user executes the card swiping action in the dormancy process of the power supply system, sensing the card swiping action of the user by the NFC module 7 to judge that the charging pile is executed, receiving a card swiping sensing signal of the user sensed by the NFC module 7 by the charging pile control module 8, controlling the low-voltage power supply module 9 to continuously output a 12V PWM signal, transmitting the voltage to the power supply system 2 through the charging pile CP signal line 10, the charging gun 4, the charging socket 5 and the charging port CP signal line 11, dividing the voltage by the CP voltage dividing circuit 12 in the power supply system, and then transmitting the divided voltage to the CP sampling circuit 13, wherein the CP sampling circuit 13 converts the voltage into a chip sampling voltage to obtain a CP pulse effective signal for CP state confirmation.

And I5, the wake-up chip 14 judges the CP signal state of the CP sampling circuit, and the CP signal state is jumped from an initial CP normal electricity effective signal to a CP pulse effective signal.

And I6, the wake-up chip 14 judges whether the CP voltage signal meets the following conditions: the CP invalid signal is jumped to a CP normal electricity effective signal, the CP invalid signal is jumped to a CP pulse effective signal or the CP normal electricity effective signal is jumped to a CP pulse effective signal, because the CP normal electricity effective signal is jumped to the CP pulse effective signal, the CP wake-up signal is triggered;

And I7, if the charging pile finishes card swiping within 10min of the step I1, the wake-up chip 14 judges whether the CP voltage signal meets the following conditions: the CP invalid signal is jumped to a CP normal electricity effective signal, the CP invalid signal is jumped to a CP pulse effective signal or the CP normal electricity effective signal is jumped to a CP pulse effective signal, and the CP wake-up signal is kept because the CP normal electricity effective signal is jumped to the CP pulse effective signal;

and I8, after I6 or I7, the wake-up chip triggers a CP wake-up signal, the power supply system 2 is waken up or keeps waken up, and the coverage of the typical scene three is completed.

Typical scenario four: the user has inserted the gun without swiping the card → pulling the gun (disabling triggering CP wakeup).

And I2, as shown in fig. 8, on the basis of a typical scene III, the power supply system 2 enters into dormancy without swiping cards for a long time.

I3, judging whether a user pulls out the charging gun 4 in the dormant process of the power supply system 2;

K1, if the charging gun 4 is pulled out, the low-voltage power supply module 9 of the charging pile continuously outputs a 12V level signal, and because the charging gun 4 and the charging socket 5 are disconnected, the power supply of the CP voltage of the power supply system 2 is disconnected, the voltage sampled by the CP sampling circuit 13 is a CP invalid signal, the wake-up chip 14 judges the CP signal state of the CP sampling circuit, and the CP signal state jumps from an initial CP normal power valid signal to a CP invalid signal.

K2, the wake-up chip 14 determines the voltage state sampled by the CP sampling circuit 13, and determines whether the CP voltage signal satisfies: the CP normal electricity effective signal is jumped to a CP ineffective signal, the CP pulse effective signal is jumped to a CP ineffective signal or the CP pulse effective signal is jumped to a CP normal electricity effective signal, and the CP normal electricity effective signal is jumped to the CP ineffective signal, so that the trigger of the CP wake-up signal is forbidden.

K3, the wake-up chip prohibits triggering the CP wake-up signal, and the power supply system keeps dormant; to this end, the typical scene four overlay is complete.

Typical scenario five: abnormal CP jump (disabling trigger CP wakeup) occurs when the inserted gun swipes the card → holds the inserted gun.

The typical scene is divided into five cases, wherein in the first case, in the waiting process of reservation charging, abnormal jump occurs to the CP signal of the charging pile; and the second type is that after the charging is finished, the CP signal of the charging pile jumps.

In the first case, as shown in fig. 9, in the whole vehicle reserved charging waiting process, the CP signal of the charging pile jumps (the CP wake is forbidden to trigger):

And I8, based on a typical scene III, the power supply system 2 is awakened by a gun inserting card, and a CP signal continuously output by the charging pile is a CP pulse effective signal.

And L1, confirming whether the user is provided with reserved charging on the electric vehicle.

L2, if the user sets reservation charging, when the power supply system 2 continuously requests high voltage to be sent to the vehicle controller 18 of the electric vehicle, the vehicle controller 18 prohibits the whole vehicle from entering charging, feeds back a dormancy signal to the power supply system 2, and forcedly makes the power supply system 2 enter dormancy, and at the moment, a CP signal detected by the power supply system 2 is still a CP pulse effective signal;

and L3, judging whether the charging gun 4 is pulled out according to the CP signal state of the power supply system 2.

And L4, if the charging gun 4 is not pulled out, the power supply system 2 judges the CP voltage state output by the low-voltage power supply module 9 in the reserved charging process of the alternating-current charging pile 1, and confirms whether abnormal jump occurs (the abnormal jump is a CP pulse effective signal-CP normal electricity effective signal because the charging pile is not pulled out).

L5, if the output voltage of the charging pile does not jump, keeping dormancy;

L6, if the charging pile abnormally jumps from the initially output CP pulse effective signal to the CP normal electricity effective signal, triggering the CP wake-up signal is forbidden because the wake-up forbidden condition is met;

L7, the wake-up chip prohibits triggering the CP wake-up signal, and the power supply system keeps dormant; the charger cannot be awakened abnormally in the waiting process of reserved charging, so that the first condition coverage is completed.

In the second case, as shown in fig. 9, after the whole vehicle is charged, the CP signal of the charging pile jumps (the CP wake is prohibited to be triggered):

And I8, based on a typical scene III, the power supply system 2 is awakened by a gun inserting card.

And L8, the whole vehicle is ready without reservation for charging, and the power supply system 2 enters a charging flow.

After the electric vehicle is charged, the vehicle controller 18 sends a sleep signal to the power supply system 2, and the power supply system 2 goes to sleep;

L10, the power supply system 2 judges the CP voltage state output by the low-voltage power supply module 9 after the electric vehicle 3 is charged by the alternating-current charging pile 1, and confirms whether the alternating-current charging pile hops or not;

And L11, if the CP pulse effective signal output by the charging pile from the initial output does not jump, keeping dormancy.

L12, because the charging gun is not pulled out, an abnormal condition that the charging pile jumps from the CP pulse effective signal which is initially output to the CP normal electricity effective signal possibly occurs, the abnormal condition meets the triggering condition of prohibiting triggering of the CP wake-up signal, the wake-up chip prohibits triggering of the CP wake-up signal, and the power supply system keeps dormant; the second case coverage is complete so far.

Typical scenario six: the user has inserted the gun and swiped the card → pulled the gun (disable triggering CP wakeup).

M1, as shown in FIG. 9, based on step L3 of the fifth first condition of the typical scenario, the user pulls out the charging gun 4 in the sleep process of the power supply system 2, the charging pile low-voltage power supply module 9 continuously outputs 12V level signals, because the charging gun 4 and the charging socket 5 are disconnected, the CP voltage power supply of the power supply system 2 is disconnected, the CP sampling circuit 13 samples a CP invalid signal, the wake-up chip 14 judges the CP signal state of the CP sampling circuit, and the CP signal state is jumped from the initial CP pulse valid signal to the CP invalid signal;

M2, the wake-up chip 14 judges that the CP pulse effective signal jumps to a CP ineffective signal;

m3, satisfying the trigger condition of prohibiting trigger CP wake-up signal to prohibit trigger CP wake-up signal, power supply system keeps dormancy, and up to this, six typical scenario covers completely.

Therefore, through the technical scheme provided by the invention, abnormal awakening of the vehicle can be avoided in the reserved charging waiting process, after charging and when the vehicle pulls out the gun, and the waste of electric energy of the vehicle is obviously reduced.

The embodiments of the present invention also provide a computer readable storage medium, and the method according to the embodiments of the present invention described above may be implemented in hardware, firmware, or as a computer code which may be recorded on a storage medium, or as original stored in a remote storage medium or a non-transitory machine readable storage medium downloaded through a network and to be stored in a local storage medium, so that the method described herein may be stored on such software process on a storage medium using a general purpose computer, a special purpose processor, or programmable or special purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, a solid state disk or the like; further, the storage medium may also comprise a combination of memories of the kind described above. It will be appreciated that a computer, processor, microprocessor controller or programmable hardware includes a storage element that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the methods illustrated by the above embodiments.

Portions of the present invention may be implemented as a computer program product, such as computer program instructions, which when executed by a computer, may invoke or provide methods and/or aspects in accordance with the present invention by way of operation of the computer. Those skilled in the art will appreciate that the form of computer program instructions present in a computer readable medium includes, but is not limited to, source files, executable files, installation package files, etc., and accordingly, the manner in which the computer program instructions are executed by a computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Herein, a computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by a computer.

Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.

Claims

1. A power supply system, comprising: the system comprises a CP signal receiving module, a CP sampling circuit, a wake-up chip, an auxiliary source control circuit and a control unit;

the CP signal receiving module is used for establishing electrical connection with the external charging pile and receiving a CP signal sent by the external charging pile;

The CP sampling circuit is electrically connected with the CP signal receiving module, the wake-up chip is electrically connected with the CP sampling circuit, and the wake-up chip is used for sampling the CP signal through the CP sampling circuit, identifying the conversion state of the CP signal and selecting whether to output the wake-up signal according to the conversion state;

The auxiliary source control circuit is electrically connected with the wake-up chip and is used for outputting a power supply signal according to the wake-up signal sent by the wake-up chip;

the control unit is electrically connected with the auxiliary source control circuit and is used for receiving a power supply signal output by the auxiliary source control circuit and sending a wake-up message to the vehicle controller according to the power supply signal.

2. The power replenishment system according to claim 1, wherein the external charging post comprises a command module and a charging gun, the command module is used for inputting a charging command, and the conversion state comprises a state of whether the charging command is received or not and a state of whether the gun is inserted or not, which are indicated by the CP signal.

3. The power supply system of claim 1, wherein the CP sampling circuit is further configured to convert the received CP signal into a power signal for the wake-up chip.

4. A method for controlling sleep wakeup, applied to a power supply system, the method comprising:

The method comprises the steps of receiving a CP signal through a CP signal receiving module and transmitting the CP signal to a CP sampling circuit;

Sampling the CP signal through the CP sampling circuit to obtain a sampling signal;

identifying the conversion state of the CP signal according to the sampling signal by a wake-up chip;

When the identification result is a first conversion state allowing the vehicle to be awakened, outputting an awakening signal to an auxiliary source control circuit through the awakening chip;

and when the identification result is a second conversion state which does not allow the vehicle to be awakened, controlling the awakening chip to prohibit the awakening signal from being output to the auxiliary source control circuit.

5. The method of claim 4, wherein the identifying, by the wake-up chip, the transition state of the CP signal from the sampled signal comprises:

And identifying whether a charging instruction is received or not and whether the conversion state of the gun is inserted or not, and dividing a first conversion state allowing the vehicle to be awakened and a second conversion state not allowing the vehicle to be awakened in the conversion states.

6. The method of claim 5, wherein identifying whether the CP signal indicates a charging command is received and whether a conversion state of the gun is inserted, and dividing a first conversion state of the conversion states that allows a vehicle to be awakened, comprises:

Identifying whether a CP invalid signal in the CP signal jumps to a CP normal electricity effective signal, whether the CP invalid signal jumps to one of a CP pulse effective signal and a CP normal electricity effective signal jumps to the CP pulse effective signal, wherein the CP invalid signal indicates that a gun does not indicate charging, the CP normal electricity effective signal is a state signal generated when the gun is inserted, and the CP pulse effective signal is a state signal generated when a charging instruction is received;

and dividing the conversion state of the CP invalid signal into a CP normal electricity valid signal, the CP invalid signal into a CP pulse valid signal or the CP normal electricity valid signal into the CP pulse valid signal into the first conversion state.

7. The method of claim 6, wherein identifying whether the CP signal indicates a charging command is received and whether a conversion state of the gun is inserted, and dividing a second conversion state of the conversion states that does not allow waking of the vehicle, comprises:

Identifying whether one of the CP normal electricity effective signal is jumped to a CP ineffective signal, the CP pulse effective signal is jumped to a CP ineffective signal and the CP pulse effective signal is jumped to a CP normal electricity effective signal in the CP signal;

And dividing the transformation state of the CP normal electricity effective signal into a CP ineffective signal, the CP pulse effective signal into a CP ineffective signal or the CP pulse effective signal into the CP normal electricity effective signal into the second transformation state.

8. The method of claim 7, wherein the CP-inactive signal, the CP-pulse active signal, and the CP-regular-electrical-active signal are identified by a preset level detection threshold and signal type, respectively, the CP-inactive signal is a signal of a direct-current signal type and a level lower than the CP-inactive-level threshold, the CP-regular-electrical-active signal is a signal of a direct-current signal type and a level higher than the CP-regular-electrical-level threshold, and the CP-pulse active signal is a signal of a pulse-width-modulated-demodulated signal type.

9. The method of claim 8, wherein the CP pulse level threshold is a voltage value of an equivalent transition of the CP pulse valid signal; the CP invalid level threshold and the CP normal level threshold are obtained through the following steps:

Simulating a CP signal output by the charging pile by a preset minimum duty ratio;

sampling the analog CP signal to obtain the CP invalid level threshold;

Acquiring a standard voltage and a voltage fluctuation lower limit value of a CP signal;

And determining the CP normal electric level threshold value based on the difference value of the standard voltage and the voltage fluctuation lower limit value.

10. The method according to claim 7 or 8, characterized in that the method further comprises:

And when the wake-up chip receives the CP normal electricity effective signal and the CP pulse effective signal simultaneously in the CP ineffective signal state, the CP pulse effective signal is used for preferentially identifying the conversion state.

11. The method according to claim 7 or 8, characterized in that the method further comprises:

And after detecting that the CP signal jumps to the CP normal electricity effective signal through the wake-up chip, if the CP pulse effective signal is not received within the preset time, the control unit enters dormancy.

12. A computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any of claims 4 to 11.

13. A computer program product comprising computer instructions for causing a computer to perform the method of any one of claims 4 to 11.