Vehicle unlocking control device, vehicle, and vehicle unlocking control method

Abstract

A vehicle unlocking control device, a vehicle, and a vehicle unlocking control method are provided, the vehicle unlocking control device includes a control module, a first domain controller, and a second domain controller; the control module supplies power to the first domain controller and the second domain controller by an external emergency power supply when the control module is electrically connected with the external emergency power supply, when the vehicle is in a low battery state; the first domain controller controls a cover lock motor of a front hood to unlock when the first domain controller receives the power from the control module; and the second domain controller determines whether to control a door lock motor to unlock according to a door unlocking signal when the second domain controller receives the door unlocking signal, and receives the power from the control module.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure claims priority to Chinese Patent Application No. 202211121239.5, entitled "a vehicle unlocking control device, a vehicle, and a vehicle unlocking control method" filed on September 15, 2022, the contents of which are incorporated by reference herein.TECHNICAL FIELD

[0002] The present disclosure relates to a technical field of vehicle low battery processing, and in detail relates to a vehicle unlocking control device, a vehicle, and a vehicle unlocking control method.BACKGROUND

[0003] For traditional smart electric vehicles or fuel vehicles, design of some vehicle models has eliminated mechanical keys, door handles, and mechanical door lock core mechanisms, and relied entirely on more technological electronic keys (e.g., remote keys, Bluetooth keys, IC cards, fingerprint recognition, face recognition, etc.) to unlock the vehicle doors and vehicles, however, when such design scheme encounters situation where the battery level of the battery system is exhausted or the voltage is low (e.g., less than 9V) after the vehicle has been parked for a long time, the vehicle may cause low battery or power outage, or the voltage of the vehicle's low-voltage battery (e. g., 12V) is too low, various electrical systems cannot be woken up and work normally, the electronic key cannot be used normally, the vehicle door cannot be unlocked, the user cannot enter the cab, and cannot power and charge the low-voltage battery by opening the front hood with the lock or the electronic switch in the cab, the vehicle cannot restore power from the low-voltage grid, so that the vehicle cannot be started.SUMMARY

[0004] A purpose of the present disclosure is to provide a vehicle unlocking control device, a vehicle, and a vehicle unlocking control method, to solve problem of how to unlock a front cabin and vehicle doors when the vehicle is in a low battery state, so as to power up a low-voltage battery of the vehicle.

[0005] In order to achieve the above purpose, according to a first aspect, an embodiment of the present disclosure provides a vehicle unlocking control device, the vehicle unlocking control device includes a control module, a first domain controller, and a second domain controller; the control module is used to supply power to the first domain controller and the second domain controller by an external emergency power supply when the control module is electrically connected with the external emergency power supply, when a vehicle is in a low battery state; the first domain controller is used to control a cover lock motor of a front hood to unlock when the first domain controller receives the power from the control module; and the second domain controller is used to determine whether to control a door lock motor to unlock according to a door unlocking signal when the second domain controller receives the door unlocking signal, and receives the power from the control module.

[0006] In some embodiments, the vehicle unlocking control device includes a signal detecting module; the signal detecting module is used to determine whether the door unlocking signal is detected when the signal detecting module receives the power from the first domain controller or the second domain controller, and when the door unlocking signal is detected, send the door unlocking signal to the second domain controller.

[0007] In some embodiments, the control module includes an emergency power interface, a power management chip, an MCU, and a switch module, the power management chip and the switch module are electrically connected with the emergency power interface, and the switch module is further electrically connected with the first domain controller and the second domain controller; the emergency power interface is used to be electrically connected with the external emergency power supply by a power connection cable; the power management chip is used to power up and wake up the MCU when the emergency power interface is electrically connected with the external emergency power supply; the MCU is used to detect whether the emergency power interface is electrically connected with the external emergency power supply after being powered up, when the emergency power interface is electrically connected with the external emergency power supply, detect a power supply voltage V2 of the emergency power interface, and detect a battery level SOC and / or a voltage V1 of a vehicle power grid power supply, when the battery level SOC is less than a preset battery level threshold and / or the voltage V1 is less than a first preset voltage threshold, and the power supply voltage V2 is equal to a second preset voltage threshold, supply power to the first domain controller and the second domain controller using the external emergency power supply through the emergency power interface.

[0008] According to a second aspect, an embodiment of the present disclosure provides a vehicle, the vehicle includes a reversible protective cover arranged on a vehicle body, an external emergency power supply, and the vehicle unlocking control device; the protective cover is arranged on a front bumper of the vehicle, the external emergency power supply and the control module are arranged in a front cabin of the vehicle and close to a position of the front bumper, and the first domain controller and the second domain controller are respectively arranged in any position in the vehicle.

[0009] According to a third aspect, an embodiment of the present disclosure provides a vehicle unlocking control method, the vehicle unlocking control method is applied in a vehicle unlocking control device; the vehicle unlocking control method includes: supplying power to the first domain controller and the second domain controller by the control module, when the control module is electrically connected with an external emergency power supply, when a vehicle is in a low battery state; controlling a cover lock motor of a front hood to unlock by the first domain controller, when the first domain controller receives the power from the control module; and determining whether to control a door lock motor to unlock according to a door unlocking signal by the second domain controller, when the second domain controller receives the door unlocking signal, and receives the power from the control module.

[0010] In some embodiments, the vehicle unlocking control method further includes: when the signal detecting module receives the power from the first domain controller or the second domain controller, determining whether the door unlocking signal is detected, when the door unlocking signal is detected, sending the door unlocking signal to the second domain controller; determining whether a door unlocking signal is received from a signal detecting module by the second domain controller, when the second domain controller receives the power from the control module.

[0011] In some embodiments, the control module includes an emergency power interface, a power management chip, an MCU, and a switch module, the power management chip and the switch module are electrically connected with the emergency power interface, and the switch module is further electrically connected with the first domain controller and the second domain controller; the emergency power interface is used to be electrically connected with the external emergency power supply by a power connection cable; supplying power to the first domain controller and the second domain controller by an external emergency power supply by the control module includes: powering up and waking up the MCU by the power management chip when the emergency power interface is electrically connected with the external emergency power supply; detecting whether the emergency power interface is electrically connected with the external emergency power supply by the MCU after being powered up, when the emergency power interface is electrically connected with the external emergency power supply, detecting a power supply voltage V2 of the emergency power interface, and detecting a battery level SOC and / or a voltage V1 of a vehicle power grid power supply, when the battery level SOC is less than a preset battery level threshold and / or the voltage V1 is less than a first preset voltage threshold, and the power supply voltage V2 is equal to a second preset voltage threshold, supplying power to the first domain controller and the second domain controller using the external emergency power supply through the emergency power interface.

[0012] In some embodiments, supplying power to the first domain controller and the second domain controller by an external emergency power supply by the control module includes: sending an emergency power-on instruction to the first domain controller and the second domain controller by the control module; sending response information indicating receipt of the emergency power-on instruction to the control module in response to the emergency power-on instruction by the first domain controller and the second domain controller; supplying power to the first domain controller and the second domain controller by the external emergency power supply by the control module, when the control module receives the response information from the first domain controller and the second domain controller.

[0013] In some embodiments, controlling a cover lock motor of a front hood to unlock by the first domain controller includes: during controlling the cover lock motor of the front hood to unlock, when the cover lock motor of the front hood is not unlocked, continuing to control the cover lock motor of the front hood to unlock, until the cover lock motor of the front hood is unlocked; or determining that the cover lock motor of the front hood fails to be unlocked, and finishing controlling the cover lock motor of the front hood to unlock, when the number of unlocking times reaches a preset threshold.

[0014] In some embodiments, the door unlocking signal is a key signal or a fingerprint signal; determining whether to control a door lock motor to unlock according to a door unlocking signal by the second domain controller includes: determining whether to control the door lock motor to unlock according to the door unlocking signal or the fingerprint signal; when the second domain controller receives the key signal, controlling the door lock motor to unlock; when the second domain controller does not receive the key signal, not controlling the door lock motor to unlock.

[0015] In some embodiments, the door unlocking signal is a distance signal between a user mobile device and the vehicle; determining whether to control a door lock motor to unlock according to a door unlocking signal by the second domain controller includes: determining whether the distance signal between the user mobile device and the vehicle is less than or equal to a preset distance threshold when the second domain controller receives the distance signal between the user mobile device and the vehicle; controlling the door lock motor to unlock when the distance signal between the user mobile device and the vehicle is less than or equal to the preset distance threshold; not controlling the door lock motor to unlock, when the distance signal between the user mobile device and the vehicle is greater than the preset distance threshold.

[0016] In some embodiments, the vehicle unlocking control method further includes: during controlling the door lock motor to unlock, when the door lock motor is not unlocked, continuing to control the door lock motor to unlock, until the door lock motor is unlocked; or determining that the door lock motor fails to be unlocked, and finishing controlling the door lock motor to unlock, when the number of unlocking times reaches a preset threshold.

[0017] In some embodiments, the vehicle unlocking control method further includes: the control module, the first domain controller, and the second domain controller entering a sleep mode, when the cover lock motor of the front hood has been unlocked, and the signal detecting module dose not detect the door unlocking signal from a remote key of a user; and the control module, the first domain controller, and the second domain controller entering the sleep mode, when the cover lock motor of the front hood and the door lock motor have been unlocked.

[0018] The embodiment of the present disclosure have the following beneficial effects: when the vehicle is in a low battery state, the user can electrically connect the control module with the external emergency power supply, thereby utilizing the external emergency power supply to supply power to the first domain controller and the second domain controller; after the first domain controller receives the power from the control module, the first domain controller controls the cover lock motor of the front hood to unlock; after the second domain controller receives the power from the control module, and receives the door unlocking signal, the second domain controller determines whether to control the door lock motor to unlock. After the cover lock motor of the front hood is unlocked, the user can open the vehicle's front hood and use the external emergency power supply to power up / replenish the vehicle's low-voltage battery, thereby allowing the vehicle's low-voltage power grid to obtain electrical energy and restore the function; after the door lock motor is unlocked, the user can enter the interior of the vehicle and further decide on the next action, such as releasing the handbrake, pushing the vehicle, moving the vehicle, towing, etc.; the components used in the embodiment of the present disclosure are simple and the operation method is convenient, and can be widely used in various vehicle models, on the premise of ensuring the convenience, reliability, and anti-theft safety of vehicle power-on operation, the front hood and the vehicle door can be opened, thereby powering up the vehicle's low-voltage battery and regaining low-voltage power supply to the vehicle, restore the normal functions of the vehicle's electrical system.

[0019] Other features and advantages of the embodiments of the present disclosure will be described in the following detailed description.BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly state the technical solution in the embodiment of the present disclosure or the prior art, the following is a brief introduction of the drawings required to be used in the description of the embodiment or the prior art, it is obvious that the drawings described below are only some embodiments of the present disclosure, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor. FIG. 1 is a structural schematic view of an embodiment of a vehicle unlocking control device according to the present disclosure. FIG. 2 is a structural schematic view of an embodiment of a control device according to the present disclosure. FIG. 3 is another structural schematic view of an embodiment of the control device according to the present disclosure. FIG. 4 is a schematic view of an embodiment of a connection relationship between the control device and other components according to the present disclosure. FIG. 5 is a flowchart of an embodiment of a vehicle unlocking control method according to the present disclosure. FIG. 6 is a flowchart of another embodiment of a vehicle unlocking control method according to the present disclosure. DETAILED DESCRIPTION

[0021] The various exemplary embodiments, features, and aspects of the present disclosure are described in detail below with reference to the attached drawings. In addition, in order to better illustrate the present disclosure, more specific details are provided in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can be implemented without certain specific details. In some instances, means well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0022] One embodiment of the present disclosure provides a vehicle unlocking control device, referring to FIG. 1, the vehicle unlocking control device in this embodiment includes an emergency power supply Emergency BAT, a control module IDU, a first domain controller ZCU R, and a second domain controller ZCU L.

[0023] The control module IDU is used to utilize an external emergency power supply to supply power to the first domain controller ZCU R and the second domain controller ZCU L when the control module IDU is electrically connected with the external emergency power supply; in detail, the external emergency power supply can be used as a backup power supply for charging / replenishing power when the vehicle is in a low battery state, the external emergency power supply has a same voltage as the vehicle's low-voltage battery, currently, the voltage of the vehicle's low-voltage battery used in the industry is generally 12V; further, in order to facilitate to charge / replenish power, the external emergency power supply can be arranged together with the control module IDU close to the front hood of the vehicle; in this embodiment, when the vehicle is in the low battery state, when the power cord is used to electrically connected the control module IDU with the external emergency power supply, after the control module IDU is powered on and woken up, the control module IDU can realize a power management function, and utilize the external emergency power supply to power the first domain controller ZCU R and the second domain controller ZCU L.

[0024] The first domain controller ZCU R is used to control the cover lock motor of the front hood of the vehicle to unlock after the first domain controller ZCU R receives power from the control module IDU; in detail, the cover lock motor of the front hood is used to drive mechanical components of the vehicle to move to lock or unlock the front hood.

[0025] The second domain controller ZCU L is used to determine whether to control the door lock motor to unlock according to a door unlocking signal if the second domain controller ZCU L receives the door unlocking signal sent by the vehicle user, after the second domain controller ZCU L receives power from the control module IDU; in detail, the door lock motor is used to drive the mechanical components of the vehicle to move to lock or unlock the vehicle door; in this embodiment, it is determined whether the vehicle user has an intention to open the vehicle door according to the door unlocking signal, based on this, it is further determined whether to unlock the vehicle door, so as to improve safety.

[0026] The vehicle mentioned in this embodiment all refers to an own vehicle, and the vehicle user may be the owner or other users who are allowed to use the vehicle.

[0027] It should be noted that the vehicle unlocking control device in this embodiment adopts an electrical architecture of the control module IDU, the domain controller, and other controllers, the control module IDU is used to distribute power to first-level loads of the vehicle, and the domain controller is used to distribute power to second-level loads, the cover lock motor of the front hood belongs to the second-level load under the first domain controller ZCU R and is controlled by the first domain controller ZCU R, and the door lock motor belongs to the second-level load under the second domain controller ZCU L, and is controlled by the second domain controller ZCU L.

[0028] During the use of the vehicle unlocking control device in the embodiment of the present disclosure, when the vehicle is in the low battery state, the vehicle user can electrically connect the control module IDU with the external emergency power supply by the power cord, thereby utilizing the external emergency power supply to supply power to the first domain controller ZCU R and the second domain controller ZCU L, the first domain controller ZCU R controls the cover lock motor of the front hood to unlock, the second domain controller ZCU L controls the door lock motor to unlock. After the cover lock motor of the front hood is unlocked, the user can open the front hood of the vehicle, and use the external emergency power supply to power up / replenish the low-voltage battery of the vehicle, thereby allowing the low-voltage power grid of the vehicle to obtain electrical energy and restore the function; after the door lock motor is unlocked, the user can enter the interior of the vehicle and further decide on the next action, such as releasing the handbrake, pushing the vehicle, moving the vehicle, towing, etc.

[0029] It should be noted that the components used in the embodiment of the present disclosure are simple and the operation method is convenient, and can be widely used in various vehicle models, on the premise of ensuring the convenience, reliability, and anti-theft safety of vehicle power-on operation, the front hood and the vehicle door can be opened, thereby powering up the low-voltage battery of the vehicle and regaining low-voltage power supply to the vehicle, and restoring the normal functions of the electrical system of the vehicle.

[0030] In some embodiments, the vehicle door in this embodiment may be only the driver door without including other vehicle doors, or may be any one of all of the vehicle doors.

[0031] In some embodiments, the vehicle unlocking control device further includes a signal detecting module, the signal detecting module is, for example, a UWB module, that is, an ultra-wideband module; the signal detecting module can be electrically connected with the first domain controller ZCU R, be the second-level load under the first domain controller ZCU R, and be controlled by the first domain controller ZCU R; the signal detecting module can also be electrically connected with the second domain controller ZCU L, be the second-level load under the second domain controller ZCU L, and be controlled by the second domain controller ZCU L;

[0032] The signal detecting module is used to determine whether a door unlocking signal is detected after the signal detecting module receives power from the first domain controller or the second domain controller, when the door unlocking signal is detected, send the door unlocking signal to the second domain controller;

[0033] In detail, for the vehicle models that can use a remote control key to unlock the vehicle door, the door unlocking signal can be a key signal of the remote control key; for the vehicle models that can use a mobile device to unlock the vehicle door, the door unlocking signal can also be a distance signal between the mobile device of vehicle user and the vehicle; for the vehicle models that can use fingerprints to unlock the vehicle door, the door unlocking signal can also be the fingerprint signal of the vehicle user; this embodiment is not limited to any one, they are all within the protection scope of the embodiment of the present disclosure.

[0034] In some embodiments, as a design solution of the control module IDU, referring to FIG. 2, the control module IDU may include an emergency power interface, a power management chip SBC, an MCU, and a switch module, the power management chip SBC and the switch module are all electrically connected with the emergency power interface, and the switch module is further electrically connected with the first domain controller ZCU R and the second domain controller ZCU L; the emergency power supply interface is used to be electrically connected with the external emergency power supply through a power connection cable; the power management chip SBC is used to power on and wake up the MCU when the emergency power interface is electrically connected with the external emergency power supply; the MCU is used to detect whether the emergency power interface is electrically connected with the external emergency power supply after being powered up, when the emergency power interface is electrically connected with the external emergency power supply, detect a power supply voltage V2 of the emergency power interface, and detect a battery level SOC and / or a voltage V1 of a power supply of the vehicle power grid, when the battery level SOC is less than a preset battery level threshold and / or the voltage V1 is less than a first preset voltage threshold, and the power supply voltage V2 is equal to a second preset voltage threshold, supply power to the first domain controller ZCU R and the second domain controller ZCU L using the external emergency power supply through the emergency power interface by switching a state of the switch module.

[0035] The switch module at least includes a first state and a second state, when the switch module in the first state, the power channel between the external emergency power supply and the first domain controller ZCU R and the second domain controller ZCU L is disconnected, at this time, the external emergency power supply cannot be used to power the first domain controller ZCU R and the second domain controller ZCU L through the emergency power interface, when the switch module in the second state, the power channel between the external emergency power supply and the first domain controller ZCU R and the second domain controller ZCU L is connected, at this time, the external emergency power supply can be used to power the first domain controller ZCU R and the second domain controller ZCU L through the emergency power interface.

[0036] In detail, referring to FIGS. 3 to 4, the switch module is arranged as an HSD tube connection switch (i.e., Emergency Power Switch), and two ESwitch power chips are also arranged, respectively for distributing power to the first domain controller ZCU R and the second domain controller ZCU L, the MCU of the control module IDU controls the HSD tube connection switch that opens the power loop of the emergency power interface, at this time, the power of the emergency power interface is provided to the two ESwitch power chips that distribute power to the first domain controller ZCU R and the second domain controller ZCU L by the HSD tube connection switch, so as to realize the use of the external emergency power supply to supply power to the first domain controller ZCU R and the second domain controller ZCU L.

[0037] Referring to FIG. 4, the power management chip SBC is further connected with the vehicle's 12V low-voltage battery (e.g., 12V BAT in FIG. 4); In some embodiments, the preset power threshold is 0 or a value close to 0; the first preset voltage threshold is 9V; and the second preset voltage threshold is the voltage of the vehicle's low-voltage battery, which is generally 12V.

[0038] In detail, when the external emergency power supply and the emergency power supply interface are connected, the power management chip SBC of the control module IDU receives power from the external emergency power supply, and the power management chip SBC powers up the MCU, at this time, the MCU is woken up (the MCU may have stopped working due to power loss), the MCU turns off the ESwitch power chips of all loads that are not related to the emergency power supply, to prevent irrelevant loads from consuming the power of the emergency power supply. At this time, the MCU detects a power supply voltage of a normal power supply of the vehicle grid (e.g., the voltage of a 12V low-voltage battery or a DC / DC module) through the power management chip SBC, and detects the power supply voltage of the emergency power supply interface by the wake-up switch (i.e., wake up module) in FIG. 3, to confirm whether the power supply of the vehicle power grid is in the low battery state, if the MCU detects that the vehicle power grid voltage is normal, that is, greater than or equal to 9V, no further action will be taken, at this time, it is considered that the current behavior of connecting the external emergency power supply with the external emergency power supply interface may be a misoperation or a malicious operation with the intention of damaging or stealing; if the MCU detects that the vehicle power grid voltage is in a state of exhaustion or loss of power, that is, less than 9V, and the vehicle's emergency power supply interface has been connected with the12V power supply (i.e., the voltage of the power supply is 12V), that is, the voltage V2 is equal to 12V, then it is determined that behavior of connecting the external emergency power supply with the external emergency power supply interface is to perform emergency power-on operation for the vehicle, and the control module provides power to the first domain controller ZCU R and the second domain controller ZCU L, to unlock the cover lock motor of the front hood and the door lock motor.

[0039] Another embodiment of the present disclosure provides a vehicle, the vehicle includes a reversible protective cover arranged on the vehicle body, the external emergency power supply, and the vehicle unlocking control device described in the above embodiment; The protective cover is arranged on a front bumper of the vehicle, the external emergency power supply and the control module are arranged in a front cabin of the vehicle and close to a position of the front bumper, and the first domain controller and the second domain controller are respectively arranged in any position in the vehicle.

[0040] In detail, the protective cover can be opened when the emergency power is applied, and can be closed when the emergency power is not required, and the surface of the protective cover is basically flush with the front bumper, after the protective cover is opened, two power cables arranged inside the protective cover are taken as physical connection interfaces (e.g., positive and negative poles) of the external emergency power supply, the two power cables are directly connected with the control module IDU, the negative pole is connected with the ground of the control module IDU, and the positive pole is connected with the power management chip SBC of the control module IDU.

[0041] Another embodiment of the present disclosure further provides a vehicle unlocking control method, the vehicle unlocking control method is based on the vehicle unlocking control device described in the above embodiment, or is implemented based on the vehicle described in the above embodiment; Referring to FIG. 5, the vehicle unlocking control method in this embodiment includes the following steps S1-S4: Step S1, the control module supplies power to the first domain controller and the second domain controller by an external emergency power supply when the control module is electrically connected with the external emergency power supply, when the vehicle is in the low battery state; In detail, the external emergency power supply is used as a backup power supply for charging / replenishing power when the vehicle is in the low battery state, the external emergency power supply has the same voltage as the vehicle's low-voltage battery, currently, the vehicle's low-voltage battery used in the industry is generally 12V; further, in order to facilitate powering / recharging, the external emergency power supply can be arranged together with the control module IDU close to the front hood of the vehicle; in this embodiment, when the vehicle is in the low battery state, when the power cable is used to electrically connect the control module IDU with the external emergency power supply, after the control module IDU is powered on and woken up, the control module IDU can realize the power management function and utilize the external emergency power supply to supply power to the first domain controller ZCU R and the second domain ZCU L; Step S2, the first domain controller controls a cover lock motor of a front hood to unlock when the first domain controller receives the power from the control module; In detail, the cover lock motor of the front hood is used to drive the movement of mechanical components of the vehicle to lock or unlock the front hood cover; Step S3, the second domain controller determines whether to control a door lock motor to unlock according to a door unlocking signal when the second domain controller receives the door unlocking signal, and receives the power from the control module;

[0042] In detail, the door lock motor is used to drive the mechanical components of the vehicle to move to lock or unlock the door; in this embodiment, it is determined according to the door unlocking signal whether the vehicle user has the intention to open the vehicle door, and based on this, it is determined whether to unlock the door, thereby improving safety. In some embodiments, the vehicle door in this embodiment may be only the driver door, and does not include other vehicle doors.

[0043] In detail, according to the method of the embodiment of the present disclosure, when the vehicle is in the low battery state, the vehicle user can electrically connect the control module IDU with the external emergency power supply by the power cord, thereby utilizing the external emergency power supply to supply power to the first domain controller ZCU R and the second domain controller ZCU L, the first domain controller ZCU R controls the cover lock motor of the front hood to unlock, the second domain controller ZCU L controls the door lock motor to unlock. After the cover lock motor of the front hood is unlocked, the user can open the front hood of the vehicle, and use the external emergency power supply to power up / replenish the low-voltage battery of the vehicle, thereby allowing the low-voltage power grid of the vehicle to obtain electrical energy and restore the function; after the door lock motor is unlocked, the user can enter the interior of the vehicle and further decide on the next action, such as releasing the handbrake, pushing the vehicle, moving the vehicle, towing, etc. It should be noted that the components used in the embodiment of the present disclosure are simple and the operation method is convenient, and can be widely used in various vehicle models, on the premise of ensuring the convenience, reliability, and anti-theft safety of vehicle power-on operation, the front hood and the vehicle door can be opened, thereby powering up the low-voltage battery of the vehicle and regaining low-voltage power supply to the vehicle, and restoring the normal functions of the electrical system of the vehicle.

[0044] In some embodiments, the method further includes the following steps: when the second domain controller receives the power from the control module, determining whether the door unlocking signal sent by the signal detecting module is detected; when the signal detecting module receives the power from the first domain controller or the second domain controller, the signal detecting module determines whether the door unlocking signal is detected, when the door unlocking signal is detected, sends the door unlocking signal to the second domain controller.

[0045] In detail, the signal detecting module is, for example, a UWB module, that is, an ultra-wideband module; the signal detecting module can be electrically connected to the first domain controller ZCU R, as the second-level load under the second domain controller ZCU R, and is controlled by the first domain controller ZCU R; the signal detecting module can also be electrically connected with the second domain controller ZCU L, as the second-level load under the second domain controller ZCU L, and controlled by the first domain controller ZCU L; For the vehicle models that can use a remote control key to unlock the vehicle door, the door unlocking signal can be a key signal of the remote control key; for the vehicle models that can use a mobile device to unlock the vehicle door, the door unlocking signal can also be a distance signal between the mobile device of vehicle user and the vehicle; for the vehicle models that can use fingerprints to unlock the vehicle door, the door unlocking signal can also be the fingerprint signal of the vehicle user; this embodiment is not limited to any one, they are all within the protection scope of the embodiment of the present disclosure.

[0046] In some embodiments, the control module includes an emergency power interface, a power management chip, an MCU, and a switch module, the power management chip SBC and the switch modules are all electrically connected with the emergency power interface, and the switch module is also electrically connected with the first domain controller ZCU R and the second domain controller ZCU L; the emergency power supply interface is used to electrically connect with the external emergency power supply through a power connection cable; The step S1 includes: Step S111, powering up and waking up the MCU by the power management chip when the emergency power interface is electrically connected with the external emergency power supply; Step S112, detecting whether the emergency power interface is electrically connected with the external emergency power supply by the MCU after being powered up, when the emergency power interface is electrically connected with the external emergency power supply, detecting a power supply voltage V2 of the emergency power interface, and detecting a battery level SOC and / or a voltage V1 of a vehicle power grid power supply, when the battery level SOC is less than a preset battery level threshold and / or the voltage V1 is less than a first preset voltage threshold, and the voltage V2 is equal to a second preset voltage threshold, supplying power to the first domain controller and the second domain controller using the external emergency power supply through the emergency power interface.

[0047] In detail, as a design solution of the control module IDU, referring to FIG. 2, the control module IDU may include an emergency power interface, a power management chip SBC, an MCU, and a switch module, the power management chip SBC and the switch modules are all electrically connected with the emergency power interface, and the switch module is also electrically connected with the first domain controller ZCU R and the second domain controller ZCU L; The switch module at least includes a first state and a second state, the MCU controls to switch the state of the switch module, so as to power the first domain controller ZCU R and the second domain controller ZCU L through the emergency power interface, when the switch module in the first state, the power channel between the external emergency power supply and the first domain controller ZCU R and the second domain controller ZCU L is disconnected, at this time, the external emergency power supply cannot be used to power the first domain controller ZCU R and the second domain controller ZCU L through the emergency power interface, when the switch module in the second state, the power channel between the external emergency power supply and the first domain controller ZCU R and the second domain controller ZCU L is connected, at this time, the external emergency power supply can be used to power the first domain controller ZCU R and the second domain controller ZCU L through the emergency power interface.

[0048] In detail, referring to FIGS. 3 to 4, the switch module is arranged as an HSD tube connection switch (i.e., Emergency Power Switch), and two ESwitch power chips are also arranged, respectively for distributing power to the first domain controller ZCU R and the second domain controller ZCU L, the MCU of the control module IDU controls the HSD tube connection switch that opens the power loop of the emergency power interface, at this time, the power of the emergency power interface is provided to the two ESwitch power chips that distribute power to the first domain controller ZCU R and the second domain controller ZCU L by the HSD tube connection switch, so as to realize the use of the external emergency power supply to supply power to the first domain controller ZCU R and the second domain controller ZCU L.

[0049] Referring to FIG. 4, the power management chip SBC is further connected with the vehicle's 12V low-voltage battery (e.g., 12V BAT in FIG. 4); In some embodiments, the preset power threshold is 0 or a value close to 0; the first preset voltage threshold is 9V; and the second preset voltage threshold is the voltage of the vehicle's low-voltage battery, which is generally 12V.

[0050] In detail, when the external emergency power supply and the emergency power supply interface are connected, the power management chip SBC of the control module IDU receives power from the external emergency power supply, and the power management chip SBC powers up the MCU, at this time, the MCU is woken up (the MCU may have stopped working due to power loss), the MCU turns off the ESwitch power chips of all loads that are not related to the emergency power supply, to prevent irrelevant loads from consuming the power of the emergency power supply. At this time, the MCU detects a power supply voltage of a normal power supply of the vehicle grid (e.g., the voltage of a 12V low-voltage battery or a DC / DC module) through the power management chip SBC, and detects the power supply voltage of the emergency power supply interface by the wake-up switch (i.e., wake up module) in FIG. 3, to confirm whether the vehicle grid power supply is in the low battery state, if the MCU detects that the vehicle grid voltage is normal, that is, greater than or equal to 9V, no further action will be taken, at this time, it is considered that the current behavior of connecting the external emergency power supply with the external emergency power supply interface may be a misoperation or a malicious operation with the intention of damaging or stealing; if the MCU detects that the vehicle grid voltage is in a state of exhaustion or loss of power, that is, lower than 9V, and the vehicle's emergency power supply interface has been connected with athe12V power supply (i.e., the voltage of the power supply is 12V), that is, the voltage V2 is equal to 12V, then it is determined that behavior of connecting the external emergency power supply with the external emergency power supply interface is to perform emergency power-on operation for the vehicle, and the control module provides power to the first domain controller ZCU R and the second domain controller ZCU L, to unlock the cover lock motor of the front hood and the door lock motor.

[0051] In some embodiments, the step S1 includes: Step S121, the control module sends an emergency power-on instruction to the first domain controller ZCU R and the second domain controller ZCU L, to notify the first domain controller ZCU R and the second domain controller ZCU R to perform an emergency power-on operation, to unlock the cover lock motor of the front hood and door lock motor respectively; At this time, the domain controllers that are not related to the emergency power-on are not required to be waken up and take action, the loads that are not related to the emergency power-on are not powered on, each domain controller is in a sleep or minimum power supply and power consumption state, the emergency power-on operation is mainly to perform unlocking of the cover lock motor of the front hood and door lock motor; Step S122, the first domain controller and the second domain controller send response information indicating receipt of the emergency power-on instruction to the control module in response to the emergency power-on instruction; Step S123, the control module supplies power to the first domain controller and the second domain controller by the external emergency power supply, when the control module receives the response information from the first domain controller and the second domain controller, details of the power supply process can be referred to the content of step S112 above.

[0052] In some embodiments, controlling the cover lock motor of the front hood to unlock by the first domain controller, includes: during controlling the cover lock motor of the front hood to unlock, when the cover lock motor of the front hood is not unlocked, continuing to control the cover lock motor of the front hood to unlock, until the cover lock motor of the front hood is unlocked; or determining that the cover lock motor of the front hood fails to be unlocked, and finishing controlling the cover lock motor of the front hood to unlock, when the number of unlocking times reaches a preset threshold, a fault may occur at this time.

[0053] In some embodiments, for the vehicle models that can use the remote control key to unlock the vehicle door, the door unlocking signal may be the key signal of the remote control key; determining whether to control the door lock motor to unlock according to the door unlocking signal by the second domain controller, includes: determining whether to control the door lock motor to unlock according to the door unlocking signal or the fingerprint signal; when the second domain controller receives the key signal, controlling the door lock motor to unlock; when the second domain controller does not receive the key signal, not controlling the door lock motor to unlock.

[0054] In some embodiments, for the vehicle models that can use the mobile device to unlock the door, the door unlocking signal is the distance signal between the user mobile device and the vehicle; determining whether to control the door lock motor to unlock according to the door unlocking signal by the second domain controller, includes: determining whether the distance signal between the user mobile device and the vehicle is less than or equal to a preset distance threshold when the second domain controller receives the distance signal between the user mobile device and the vehicle; controlling the door lock motor to unlock when the distance signal between the user mobile device and the vehicle is less than or equal to the preset distance threshold; not controlling the door lock motor to unlock, when the distance signal between the user mobile device and the vehicle is greater than the preset distance threshold.

[0055] In some embodiments, for the vehicle models that can use fingerprints to unlock the door, the door unlocking signal may also be the fingerprint signal of the vehicle user;

[0056] The second domain controller determines whether to control the door lock motor to unlock based on the door unlocking signal, includes: when the second domain controller receives the fingerprint signal, the second domain controller controls the door lock motor to unlock; when the second domain controller does not receive the fingerprint signal, the second domain controller does not control the door lock motor to unlock.

[0057] In some embodiments, the method further includes the following steps: during controlling the door lock motor to unlock by the second domain controller, when the door lock motor is not unlocked, continuing to control the door lock motor to unlock, until the door lock motor is unlocked; or determining that the door lock motor fails to be unlocked, and finishing controlling the door lock motor to unlock, when the number of unlocking times reaches a preset threshold, a fault may occur at this time.

[0058] In some embodiments, the method further includes the following steps: finishing the emergency power-on operation, the control module, the first domain controller, and the second domain controller entering a sleep mode, when the cover lock motor of the front hood has been unlocked, and the signal detecting module dose not detect the door unlocking signal from the remote key of the user; finishing the emergency power-on operation, the control module, the first domain controller, and the second domain controller entering the sleep mode, when the cover lock motor of the front hood and the door lock motor have been unlocked.

[0059] FIG. 6 illustrates a flowchart of an embodiment of the vehicle unlocking control method of the present disclosure, referring to FIG. 6, the working principle of the present disclosure can be better understood.

[0060] It should be noted that the method of this embodiment is implemented based on the device of the above embodiment, therefore, the parts not described in detail in the method of this embodiment can be obtained by referring to the device of the above embodiment and will not be described again here.

[0061] The various embodiments of the present disclosure have been described above, and the above description are exemplary, not exhaustive, and are not limited to the embodiments disclosed. Without deviating from the scope and spirit of the embodiments illustrated, many modifications and changes are apparent to the ordinary skilled person in the technical field. The terms used herein have been chosen to best explain the principle, practical application, or technical improvement of each embodiment in the market, or to make the embodiments disclosed herein understandable to other persons generally skilled in the technical field.

Claims

1. A vehicle unlocking control device, <b>characterized in that, the vehicle unlocking control device comprises a control module, a first domain controller, and a second domain controller; the control module is used to supply power to the first domain controller and the second domain controller by an external emergency power supply when the control module is electrically connected with the external emergency power supply, when a vehicle is in a low battery state; the first domain controller is used to control a cover lock motor of a front hood to unlock when the first domain controller receives the power from the control module; and the second domain controller is used to determine whether to control a door lock motor to unlock according to a door unlocking signal when the second domain controller receives the door unlocking signal, and receives the power from the control module.

2. The vehicle unlocking control device according to claim 1, <b>characterized in that, the vehicle unlocking control device comprises a signal detecting module; the signal detecting module is used to determine whether the door unlocking signal is detected when the signal detecting module receives the power from the first domain controller or the second domain controller, and when the door unlocking signal is detected, send the door unlocking signal to the second domain controller.

3. The vehicle unlocking control device according to claim 1, <b>characterized in that, the control module comprises an emergency power interface, a power management chip, an MCU, and a switch module, the power management chip and the switch module are electrically connected with the emergency power interface, and the switch module is further electrically connected with the first domain controller and the second domain controller; the emergency power interface is used to be electrically connected with the external emergency power supply by a power connection cable; the power management chip is used to power up and wake up the MCU when the emergency power interface is electrically connected with the external emergency power supply; the MCU is used to detect whether the emergency power interface is electrically connected with the external emergency power supply after being powered up, when the emergency power interface is electrically connected with the external emergency power supply, detect a power supply voltage V2 of the emergency power interface, and detect a battery level SOC and / or a voltage V1 of a vehicle power grid power supply, when the battery level SOC is less than a preset battery level threshold and / or the voltage V1 is less than a first preset voltage threshold, and the power supply voltage V2 is equal to a second preset voltage threshold, supply power to the first domain controller and the second domain controller using the external emergency power supply through the emergency power interface.

4. A vehicle, <b>characterized in that, the vehicle comprises a reversible protective cover arranged on a vehicle body, an external emergency power supply, and a vehicle unlocking control device in any of claims 1 to 3; the protective cover is arranged on a front bumper of the vehicle, the external emergency power supply and the control module are arranged in a front cabin of the vehicle and close to a position of the front bumper, and a first domain controller and a second domain controller are respectively arranged in any position in the vehicle.

5. A vehicle unlocking control method, <b>characterized in that, the vehicle unlocking control method is applied in a vehicle unlocking control device in any of claims 1 to 3, or in a vehicle in claim 4; the vehicle unlocking control method comprises: supplying power to a first domain controller and a second domain controller by a control module, when the control module is electrically connected with an external emergency power supply, when the vehicle is in a low battery state; controlling a cover lock motor of a front hood to unlock by the first domain controller, when the first domain controller receives the power from the control module; and determining whether to control a door lock motor to unlock according to a door unlocking signal by the second domain controller, when the second domain controller receives the door unlocking signal, and receives the power from the control module.

6. The vehicle unlocking control method according to claim 5, <b>characterized in that, the vehicle unlocking control method further comprises: when the signal detecting module receives the power from the first domain controller or the second domain controller, determining whether the door unlocking signal is detected, when the door unlocking signal is detected, sending the door unlocking signal to the second domain controller; determining whether a door unlocking signal is received from a signal detecting module by the second domain controller, when the second domain controller receives the power from the control module.

7. The vehicle unlocking control method according to claim 5, <b>characterized in that, the control module comprises an emergency power interface, a power management chip, an MCU, and a switch module, the power management chip and the switch module are electrically connected with the emergency power interface, and the switch module is further electrically connected with the first domain controller and the second domain controller; the emergency power interface is used to be electrically connected with the external emergency power supply by a power connection cable; supplying power to the first domain controller and the second domain controller by an external emergency power supply by the control module, when the control module is electrically connected with the external emergency power supply, comprises: powering up and waking up the MCU by the power management chip when the emergency power interface is electrically connected with the external emergency power supply; detecting whether the emergency power interface is electrically connected with the external emergency power supply by the MCU after being powered up, when the emergency power interface is electrically connected with the external emergency power supply, detecting a power supply voltage V2 of the emergency power interface, and detecting a battery level SOC and / or a voltage V1 of a vehicle power grid power supply, when the battery level SOC is less than a preset battery level threshold and / or the voltage V1 is less than a first preset voltage threshold, and the power supply voltage V2 is equal to a second preset voltage threshold, supplying power to the first domain controller and the second domain controller using the external emergency power supply through the emergency power interface.

8. The vehicle unlocking control method according to claim 5, <b>characterized in that, supplying power to the first domain controller and the second domain controller by an external emergency power supply by the control module comprises: sending an emergency power-on instruction to the first domain controller and the second domain controller by the control module; sending response information indicating receipt of the emergency power-on instruction to the control module in response to the emergency power-on instruction by the first domain controller and the second domain controller; supplying power to the first domain controller and the second domain controller by the external emergency power supply by the control module, when the control module receives the response information from the first domain controller and the second domain controller.

9. The vehicle unlocking control method according to claim 5, <b>characterized in that, controlling a cover lock motor of a front hood to unlock by the first domain controller comprises: during controlling the cover lock motor of the front hood to unlock, when the cover lock motor of the front hood is not unlocked, continuing to control the cover lock motor of the front hood to unlock, until the cover lock motor of the front hood is unlocked; or determining that the cover lock motor of the front hood fails to be unlocked, and finishing controlling the cover lock motor of the front hood to unlock, when the number of unlocking times reaches a preset threshold.

10. The vehicle unlocking control method according to claim 5, <b>characterized in that, the door unlocking signal is a key signal or a fingerprint signal; determining whether to control a door lock motor to unlock according to a door unlocking signal by the second domain controller comprises: when the second domain controller receives the key signal, controlling the door lock motor to unlock; when the second domain controller does not receive the key signal, not controlling the door lock motor to unlock.

11. The vehicle unlocking control method according to claim 5, <b>characterized in that, the door unlocking signal is a distance signal between a user mobile device and the vehicle; determining whether to control a door lock motor to unlock according to a door unlocking signal by the second domain controller comprises: determining whether the distance signal between the user mobile device and the vehicle is less than or equal to a preset distance threshold when the second domain controller receives the distance signal between the user mobile device and the vehicle; controlling the door lock motor to unlock when the distance signal between the user mobile device and the vehicle is less than or equal to the preset distance threshold, not controlling the door lock motor to unlock, when the distance signal between the user mobile device and the vehicle is greater than the preset distance threshold.

12. The vehicle unlocking control method according to claim 10 or 11, <b>characterized in that, the vehicle unlocking control method further comprises: during controlling the door lock motor to unlock, when the door lock motor is not unlocked, continuing to control the door lock motor to unlock, until the door lock motor is unlocked; or determining that the door lock motor fails to be unlocked, and finishing controlling the door lock motor to unlock, when the number of unlocking times reaches a preset threshold.

13. The vehicle unlocking control method according to claim 5, <b>characterized in that, the vehicle unlocking control method further comprises: the control module, the first domain controller, and the second domain controller entering a sleep mode, when the cover lock motor of the front hood has been unlocked, and the signal detecting module dose not detect the door unlocking signal from a remote key of a user; and the control module, the first domain controller, and the second domain controller entering the sleep mode, when the cover lock motor of the front hood and the door lock motor have been unlocked.

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