Automobile fast charging control method, electronic device and storage medium

Abstract

The present invention discloses a method for controlling fast charging of an automobile, an electronic device and a storage medium. The method comprises: when the controller is awakened by a signal from the insertion of a fast charging gun, if no charging permission signal is detected within a preset time, the controller enters a low-power sleep mode, in which part of the controller functions are turned off, the controller local area network module is turned off, and the wake-up function of the controller local area network module is maintained; when the controller is awakened by a signal from the controller local area network module, the turned-off functions and the controller local area network module are turned on, and charging is started if a charging permission signal is detected. The present invention introduces a low-power sleep mode to the controller after the fast charging gun is inserted and the charging permission signal is not received. While retaining the function of the controller local area network module being awakened by the charging permission signal, the controller turns off most of its functions, thereby reducing the power consumption of the controller when the fast charging gun is inserted but the charging permission signal is not received.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to a method for controlling automobile fast charging, an electronic device, and a storage medium. Background Art

[0002] Dark current in new energy vehicles (such as electric vehicles) refers to the current that still flows when the ignition switch is in the OFF position (the vehicle is not in operation). Due to the existence of this dark current and the natural discharge of the battery, the battery is prone to power failure and its service life is shortened.

[0003] Currently, when a fast-charging gun is plugged into an electric vehicle, the fast-charging port connection signal (CC2) wakes up the vehicle control module (VCM). If no card swipe signal is detected for a certain period of time (for example, three minutes), or if the mobile app has not authorized charging, the VCM continues to cycle through card swipe signals and remote charging permission signals. The VCM's Controller Area Network (CAN) module functions in normal operating mode, resulting in high power consumption.

[0004] like Figure 1 As shown, the VCM 1' includes a DC-DC power supply chip 11', a microcontroller unit (MCU) 12', and a controller area network module 13'. The controller area network module 13' includes a vehicle controller area network (V_CAN) module 131', an electric vehicle controller area network (EV_CAN) module 132', and a quick charge controller area network (Q_CAN) module 133'.

[0005] When VCM 1' receives the fast charging gun insertion signal, it is awakened. Then VCM 1' begins to detect the card swipe signal sent to Q_CAN module 133' by the charging pile 2' after detecting the charging card 4'. If the card is not swiped within a certain period of time, the detection cycle continues. At the same time, MCU 12' begins to detect the remote charging permission signal sent to Q_CAN module 133' by the telematics control unit (TCU) 3' after detecting the mobile phone 5' signal. If it is not detected within a certain period of time, the detection cycle continues. Both the card swipe signal and the remote charging permission signal are CAN signals.

[0006] At the same time, VCM 1' turns on the DC-DC power supply chip 11', the MCU 12' core, the system clock, and external interrupts, and turns on the V_CAN module, Q_CAN module functions, and their corresponding clocks. This allows VCM 1' to recognize the card swipe signal sent on Q_CAN or the remote charging permission signal sent by the mobile phone app when the card is swiped again. Furthermore, VCM 1' turns off the analog input (AI), digital input (DI), low dropout regulator (LDO), low side driver (LSD), high side driver (HSD), and EV_CAN to enter low-power mode.

[0007] When the card swiping signal or remote charging permission signal is recognized again, it enters the normal fast charging mode until charging is completed.

[0008] Therefore, in the fast charging control method of the prior art, when the fast charging gun is inserted, regardless of whether the card is swiped or remote charging is allowed, most of the functional modules of the VCM vehicle controller, such as the DC-DC power supply chip, MCU core, interrupt, clock, IO detection and CAN communication module, are working, consuming a large dark current (about 50mA), thereby reducing the battery's power supply endurance life. Summary of the Invention

[0009] Based on this, it is necessary to provide a car fast charging control method, electronic device and storage medium to address the technical problem that the fast charging control method in the existing technology consumes a large amount of dark current when the fast charging gun is inserted.

[0010] The present invention provides a vehicle fast charging control method, comprising:

[0011] When the controller is awakened by the fast charging gun insertion signal, if no charging permission signal is detected within a preset time, it enters a low-power sleep mode. In the low-power sleep mode, some functions of the controller are turned off, the controller local area network module is turned off, and the wake-up function of the controller local area network module is maintained;

[0012] When the controller is awakened by a signal from the CAN module, the disabled functions and the CAN module are turned on, and charging is started if a charge permission signal is detected.

[0013] Furthermore, shutting down the CAN and maintaining the wake-up function of the CAN module specifically includes:

[0014] After configuring the Receive Interrupt Wake-up function of the Controller Area Network Module, turn off the Controller Area Network Module.

[0015] Furthermore, after shutting down the CAN module, the method further includes shutting down a module clock of the shut down CAN module.

[0016] Furthermore, the controller area network module includes a fast charging controller area network module, and after configuring the receiving interrupt wake-up function of the controller area network module, shutting down the controller area network module specifically includes:

[0017] After configuring the receive interrupt wakeup function of the fast charge controller area network module, turn off the fast charge controller area network module.

[0018] Furthermore, when the controller is awakened by a signal from the CAN module, the controller turns on the disabled functions and the CAN module, and starts charging if a charging permission signal is detected, specifically including:

[0019] The controller is awakened by a signal from the fast charge controller area network module, turns on the disabled functions and the controller area network module, and starts charging if a charge enable signal is detected.

[0020] Furthermore, the controller area network includes a vehicle body controller area network, and after configuring the controller area network module to wake up upon receiving an interrupt, shutting down the controller area network module specifically includes:

[0021] After configuring the receive interrupt wakeup function of the BCAN module, turn off the BCAN module.

[0022] Furthermore, the charging permission signal is a charging card swiping signal or a remote charging permission signal.

[0023] Furthermore, the charging card swiping signal is a charging card swiping signal issued by a charging pile that is communicatively connected to the controller local area network module, and the remote charging permission signal is a remote charging permission signal issued by a remote control module that is communicatively connected to the controller local area network module.

[0024] The present invention provides an electronic device, comprising:

[0025] at least one processor; and,

[0026] a memory communicatively connected to at least one of the processors; wherein,

[0027] The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the vehicle fast charging control method as described above.

[0028] The present invention provides a storage medium, which stores computer instructions. When a computer executes the computer instructions, it is used to execute all steps of the automobile fast charging control method as described above.

[0029] After the fast charging gun is inserted, the present invention introduces a low-power sleep mode into the controller when no charging permission signal is received. While retaining the function of the controller local area network module being awakened by the charging permission signal, most functions of the controller are turned off, thereby reducing the power consumption of the controller when the fast charging gun is inserted but no charging permission signal is received. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the vehicle controller system in the prior art;

[0031] Figure 2 This is a flowchart of a vehicle fast charging control method according to an embodiment of the present invention;

[0032] Figure 3 This is a system schematic diagram of a vehicle controller used in a vehicle fast charging control method according to an embodiment of the present invention;

[0033] Figure 4 This is a flowchart of a vehicle fast charging control method in another embodiment of the present invention;

[0034] Figure 5 This is a flowchart of a vehicle fast charging control method according to the best embodiment of the present invention;

[0035] Figure 6 The figure is a schematic diagram of the hardware structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0036] The following further describes specific embodiments of the present invention with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0037] like Figure 2 The figure shows a working flow diagram of a vehicle fast charging control method according to an embodiment of the present invention, including:

[0038] Step S201: After the controller is awakened by a fast charging gun insertion signal, if no charging permission signal is detected within a preset time, it enters a low-power sleep mode. In the low-power sleep mode, some functions of the controller are turned off, the controller local area network module is turned off, and the wake-up function of the controller local area network module is maintained;

[0039] Step S202 : After the controller is awakened by a signal from the CAN module, the controller turns on the disabled functions and the CAN module, and starts charging if a charging permission signal is detected.

[0040] Specifically, the present invention can be applied to the electronic control unit (ECU) of a vehicle. Preferably, the automobile fast charging control method of the embodiment of the present invention is applied to the microcontroller of the vehicle control module (VCM).

[0041] When the fast charging gun is inserted into the vehicle, a fast charging gun insertion signal is generated, thereby executing step S201 to wake up the controller. The controller includes a power chip, a microcontroller unit, a controller area network module, etc. The controller is preferably a vehicle controller.

[0042] like Figure 3 The figure shows a system schematic diagram of a vehicle controller used in a vehicle fast charging control method according to an embodiment of the present invention. The vehicle controller 1 includes: a direct current (DC-DC) power supply chip 11, a microcontroller unit (MCU) 12, and a controller area network module 13.

[0043] Among them, the fast charging gun inserts a signal to wake up the controller, specifically: the fast charging gun inserts a signal CC2, enables the enable end (EN) of the DC power supply chip 11, and provides a 5V voltage to power on the microcontroller 12.

[0044] At the same time, the positive electrode of the KL30 12V battery serves as the main power supply circuit to supply power to the DC-DC power supply chip 11.

[0045] The enable terminal of the DC-DC power supply chip 11 also receives:

[0046] Ignition signal IGN: KL15, ignition signal (IGN of remote control key) gear position, used as wake-up signal;

[0047] Slow charging gun wake-up signal NCHG;

[0048] The wake-up signal V_CAN_INH output by the BCAN module driver chip: When the BCAN module receives a message, the driver chip pulls this signal high, enabling the DC / DC power converter chip and applying 5V to VCM.

[0049] The wake-up signal Q_CAN_INH output by the fast charge controller local area network module driver chip: When the fast charge controller local area receives a message, the driver chip pulls the signal high, enables the DC / DC power conversion chip, and supplies 5V to VCM.

[0050] Then, if the charging permission signal is not detected within the preset time, the system enters a low-power sleep mode, in which some functions of the controller are turned off, the controller area network module is turned off, and the wake-up function of the controller area network module is maintained.

[0051] Among them, some controller functions are disabled, including but not limited to disabling AI / DI input, internal LDO, high-side and low-side drivers. At the same time, the microcontroller core, system clock, and external interrupts are enabled.

[0052] At the same time, the CAN module 13 is turned off, and the wake-up function of the CAN module is maintained.

[0053] Since the wake-up function of the CAN module is maintained, when a charge enable signal is received from the CAN module, step S202 is triggered and the controller is awakened, thereby re-enabling the disabled functions and the CAN module. If a charge enable signal is detected, charging is started.

[0054] After the fast charging gun is inserted, the present invention introduces a low-power sleep mode into the controller when no charging permission signal is received. While retaining the function of the controller local area network module being awakened by the charging permission signal, most functions of the controller are turned off, thereby reducing the power consumption of the controller when the fast charging gun is inserted but no charging permission signal is received.

[0055] like Figure 4 FIG2 is a flowchart of a method for controlling fast charging of a vehicle according to another embodiment of the present invention, including:

[0056] Step S401: After the controller is awakened by a fast charging gun insertion signal, if no charging permission signal is detected within a preset time, it enters a low-power sleep mode. In the low-power sleep mode, after configuring the receive interrupt wake-up function of the CAN module, the CAN module is shut down, and the module clock of the shut-down CAN module is turned off. The charging permission signal is a charging card swipe signal or a remote charging permission signal.

[0057] In one embodiment, the controller area network module includes a fast charge controller area network module, and after configuring the receive interrupt wake-up function of the controller area network module, shutting down the controller area network module specifically includes:

[0058] After configuring the receive interrupt wakeup function of the fast charge controller area network module, turn off the fast charge controller area network module.

[0059] In one embodiment, the controller area network includes a vehicle body controller area network, and after configuring the controller area network module to wake up after receiving an interrupt, shutting down the controller area network module specifically includes:

[0060] After configuring the receive interrupt wakeup function of the BCAN module, turn off the BCAN module.

[0061] In one embodiment, the charging card swiping signal is a charging card swiping signal issued by a charging pile that is communicatively connected to the controller local area network module, and the remote charging permission signal is a remote charging permission signal issued by a remote control module that is communicatively connected to the controller local area network module.

[0062] In step S402, after the controller is awakened by a signal from the CAN module, the controller turns on the disabled functions and the CAN module, and starts charging if a charging permission signal is detected.

[0063] In one embodiment, when the controller is awakened by a signal from a controller area network module, the controller turns on the disabled functions and the controller area network module, and starts charging if a charge enable signal is detected, specifically including:

[0064] The controller is awakened by a signal from the fast charge controller area network module, turns on the disabled functions and the controller area network module, and starts charging if a charge enable signal is detected.

[0065] Specifically, when the fast charging gun is inserted into the vehicle, a fast charging gun insertion signal is generated, thereby executing step S401 to wake up the controller. The controller is preferably a vehicle controller.

[0066] like Figure 3 The figure shows a system schematic diagram of a vehicle controller used in a vehicle fast-charging control method according to an embodiment of the present invention. The vehicle controller 1 includes a DC-DC power supply chip 11, a microcontroller unit (MCU) 12, and a controller area network module 13. The controller area network module 13 includes a body controller area network module 131, an electric vehicle controller area network module 132, and a fast-charging controller area network module 133.

[0067] Among them, the fast charging gun inserts a signal to wake up the controller, specifically: the fast charging gun inserts a signal CC2, enables the enable end (EN) of the DC power supply chip 11, and provides a 5V voltage to power on the microcontroller 12.

[0068] Then, if the charging permission signal is not detected within the preset time, the system enters a low-power sleep mode. In the low-power sleep mode, some functions of the controller are turned off, the controller local area network module is turned off, the module clock of the turned-off controller local area network module is turned off, and the wake-up function of the controller local area network module is maintained.

[0069] The charging permission signal is a charging card swiping signal or a remote charging permission signal.

[0070] Among them, some controller functions are disabled, including but not limited to disabling AI / DI input, internal LDO, high-side and low-side drivers. At the same time, the microcontroller core, system clock, and external interrupts are enabled.

[0071] At the same time, the controller area network module 13 is turned off, as well as the module clocks of the turned-off controller area network modules. The controller area network module 13 includes: a vehicle controller area network (V_CAN) module 131, an electric vehicle controller area network (EV_CAN) module 132, and a quick charge controller area network (Q_CAN) module 133. Therefore, in low-power sleep mode, the vehicle controller area network module 131, the electric vehicle controller area network module 132, and the quick charge controller area network module 133 are turned off, and the module clocks of the vehicle controller area network module 131, the electric vehicle controller area network module 132, and the quick charge controller area network module 133 are also turned off.

[0072] In addition, the fast charge controller local area network module 133 and the body controller local area network module 131 are also configured with a receive interrupt wake-up function.

[0073] Preferably, the connection port of the microcontroller unit 12 has a receive interrupt wake-up setting. By setting the receive interrupt wake-up function on the connection port between the microcontroller unit 12 and the fast charging controller local area network module 133 and the body controller local area network module 131, the receive interrupt wake-up function of the fast charging controller local area network module 133 and the body controller local area network module 131 is configured.

[0074] Since the wake-up function of the CAN module is maintained, when a charge enable signal is received from the CAN module, step S402 is triggered and the controller is awakened, thereby re-enabling the disabled functions and the CAN module. If a charge enable signal is detected, charging begins.

[0075] The charging permission signal is a charging card swiping signal from the fast charging controller local area network module, or a remote charging permission signal.

[0076] Among them, after the charging pile 2 receives the induction signal sent by the charging card 4, it sends a charging card swiping signal to the fast charging controller local area network module 133. After the remote control module (Telematics Control Unit, TCU) 3 receives the remote charging permission signal sent by the APP of the mobile phone 5 through, for example, a 4G signal, it sends a remote charging permission signal to the fast charging controller local area network module 133.

[0077] In addition, when the car door is opened, the body controller (BCM) is awakened and a message is sent to the BCM local area module 131 to wake up the VCM. That is, if the VCM goes into sleep mode without swiping a card, it can be awakened not only by the card swipe signal but also by the message on the BCM local area module when the car door is opened.

[0078] When the fast charge controller local module 133 responds to the interrupt, no local operation of the body controller is required.

[0079] In this embodiment, after the fast charging gun is inserted, if no charging permission signal is received, a low-power sleep mode is introduced into the controller, and the receiving interrupt wake-up function of the body controller local area network module and the fast charging controller local area network module is retained to ensure that the controller can be awakened by the charging permission signal or the door opening signal. At the same time, most functions of the controller are turned off, thereby reducing the power consumption of the controller when the fast charging gun is inserted but no charging permission signal is received.

[0080] like Figure 5 The following is a flowchart of a vehicle fast charging control method according to a preferred embodiment of the present invention, including:

[0081] Step S501: After receiving the fast charging gun insertion signal CC2, VCM 1 is awakened and enables the DC-DC power chip 11 to provide 5V voltage to power up MCU 12;

[0082] Step S502: VCM 1 starts to detect the card swipe signal or remote charging permission signal on the fast charge controller local area network module 133. If no card swipe signal or remote charging permission signal is detected within a certain period of time, it enters CC2 low-power sleep mode;

[0083] Step S503: In CC2 low-power sleep mode, VCM 1 turns on the DC-DC power supply chip 11, the MCU 12 core, the system clock, and the external interrupts. At the same time, the Rx interrupt wake-up function of the body controller area network module 131 and the fast charge controller area network module 133 is enabled. This allows VCM 1 to recognize the card swipe signal or remote charging permission signal sent by the fast charge controller area network module 133 when the card is swiped again or the user's mobile phone APP sends a remote charging permission signal.

[0084] In CC2 low-power sleep mode, VCM1 turns off the analog input (AI) / digital input (DI), turns off the internal low-dropout regulator (LDO), turns off the low-side driver (LSD) / high-side driver (HSD), turns off the electric vehicle controller area network module 132 (the electric vehicle controller area network module 132 does not need to be woken up), turns off the body controller area network module 131, the fast charge controller area network module 133 and the corresponding CAN module clock to enter low-power mode. In the CC2 low-power sleep condition of this solution, the dark current is about 7mA;

[0085] In step S504, the card swiping signal or the remote charging signal triggers the Rx interrupt on the fast charging controller local area network module 133, the VCM 1 is awakened, and the state is switched to enter the normal fast charging mode, and charging starts until it ends.

[0086] In this embodiment, after the fast charging gun is inserted and the CC2 signal is triggered, but the user does not swipe the card or the mobile phone app does not issue a remote charging request, a CC2 low-power sleep mode is introduced to the VCM, turning off most of the VCM functions. At the same time, by configuring the CAN Rx interrupt, the trigger recognition function of re-swiping the card or remote charging is retained, reducing the dark current from the existing 50mA to 7mA, effectively reducing the VCM power consumption in this scenario.

[0087] like Figure 6 FIG. 1 is a schematic diagram of the hardware structure of an electronic device of the present invention, comprising:

[0088] at least one processor 601; and,

[0089] A memory 602 in communication with at least one of the processors 601; wherein,

[0090] The memory 602 stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors so that the at least one processor can execute the vehicle fast charging control method as described above.

[0091] Figure 6 A processor 601 is taken as an example.

[0092] The electronic device may be an electronic control unit (ECU) of the vehicle. Preferably, the electronic device is a microcontroller of a vehicle control module (VCM). The electronic device may further include an input device 603 and a display device 604.

[0093] The processor 601, the memory 602, the input device 603 and the display device 604 may be connected via a bus or other means, with the bus connection being used as an example in the figure.

[0094] The memory 602 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs, and modules, such as the program instructions / modules corresponding to the vehicle fast charging control method in the embodiment of the present application, for example, Figure 2 The processor 601 executes various functional applications and data processing by running the non-volatile software programs, instructions and modules stored in the memory 602, that is, implementing the automobile fast charging control method in the above embodiment.

[0095] The memory 602 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the automobile fast charging control method, etc. In addition, the memory 602 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 602 may optionally include a memory remotely located relative to the processor 601, and these remote memories may be connected to a device that executes the automobile fast charging control method via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0096] The input device 603 can receive user clicks and generate signal input related to user settings and function control of the vehicle fast charging control method. The display device 604 can include a display device such as a display screen.

[0097] The one or more modules are stored in the memory 602 and, when executed by the one or more processors 601 , execute the automobile fast charging control method in any of the above method embodiments.

[0098] After the fast charging gun is inserted, the present invention introduces a low-power sleep mode into the controller when no charging permission signal is received. While retaining the function of the controller local area network module being awakened by the charging permission signal, most functions of the controller are turned off, thereby reducing the power consumption of the controller when the fast charging gun is inserted but no charging permission signal is received.

[0099] An embodiment of the present invention provides a storage medium storing computer instructions. When a computer executes the computer instructions, it is used to execute all steps of the vehicle fast charging control method as described above.

[0100] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A vehicle fast charging control method, characterized in that: include: When the controller is awakened by the fast charging gun insertion signal, if no charging permission signal is detected within a preset time, it enters a low-power sleep mode. In the low-power sleep mode, some functions of the controller are turned off, the controller local area network module is turned off, and the wake-up function of the controller local area network module is maintained; When the controller is awakened by a signal from the CAN module, the controller turns on the disabled functions and the CAN module, and starts charging if a charge enable signal is detected. The method includes: after the controller is awakened by a signal from the controller area network module, turning on the disabled functions and the controller area network module, and starting charging if a charging permission signal is detected. When receiving a charge enable signal from the CAN module, the controller is awakened, thereby re-enabling the disabled functions and the CAN module, and starting charging if the charge enable signal is detected.

2. The automobile fast charging control method according to claim 1, characterized in that: The shutting down of the controller area network module and maintaining the wake-up function of the controller area network module specifically includes: After configuring the Receive Interrupt Wake-up function of the Controller Area Network Module, turn off the Controller Area Network Module.

3. The automobile fast charging control method according to claim 2, characterized in that: After shutting down the CAN module, the method further includes shutting down a module clock of the shut down CAN module.

4. The automobile fast charging control method according to claim 2, characterized in that: The controller area network module includes a fast charge controller area network module, and after configuring the receive interrupt wake-up function of the controller area network module, shutting down the controller area network module specifically includes: After configuring the receive interrupt wakeup function of the fast charge controller area network module, turn off the fast charge controller area network module.

5. The automobile fast charging control method according to claim 2, characterized in that: The controller area network module includes a vehicle body controller area network module, and after configuring the controller area network module to wake up from a received interrupt, shutting down the controller area network module specifically includes: After configuring the receive interrupt wakeup function of the BCAN module, turn off the BCAN module.

6. The automobile fast charging control method according to any one of claims 1 to 5, characterized in that: The charging permission signal is a charging card swiping signal or a remote charging permission signal.

7. The automobile fast charging control method according to claim 6, characterized in that: The charging card swiping signal is a charging card swiping signal issued by a charging pile that is communicatively connected to the controller local area network module, and the remote charging permission signal is a remote charging permission signal issued by a remote control module that is communicatively connected to the controller local area network module.

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the automobile fast charging control method according to any one of claims 1 to 7.

9. A storage medium, characterized in that: The storage medium stores computer instructions, and when a computer executes the computer instructions, it is used to execute all steps of the automobile fast charging control method according to any one of claims 1 to 7.

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