Unlocking control system and method, and vehicle

Abstract

An unlocking control system, comprising: an external power replenishment interface (4), which is configured to connect to an external emergency power source when a vehicle is in a low-battery-voltage state; a power source management module (1), which is configured to communicate with the external emergency power source, and measure the voltage of the external emergency power source, wherein if it is detected that the voltage matches the voltage of a low-voltage power network of a vehicle, the power source management module controls a secondary cut-off protection unit (3) to be turned on, such that a low-voltage storage battery (5) is connected to the external emergency power source so as to perform a power replenishment operation; the low-voltage storage battery (5), which is configured to supply power to the low-voltage power network of the vehicle; and a door module (6), which is configured to drive, once having obtained power supplied from the low-voltage storage battery (5) and when a vehicle door unlocking signal is received and the authentication of identity information of a user has passed, a door lock to complete unlocking. Further disclosed are an unlocking control method and a vehicle. On the premise of ensuring the convenience, reliability and anti-theft safety of a jump-starting operation of the vehicle, the system can enable a vehicle door to be opened, and then jump-start the low-voltage storage battery (5) of the vehicle and enable the vehicle to regain low-voltage power supply, so as to restore normal functions of an electrical system of the vehicle, thereby realizing a low-cost, highly-reliable and high-tech design, and making the customer experience more comfortable and safer.

Description

Unlock control system, method and vehicle Cross-reference to related applications

[0001] This application claims priority to Chinese Patent Application No. 202411089895.0, filed on August 09, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to, but is not limited to, the technical field of electric vehicles, in particular to an unlock control system, method and vehicle. BACKGROUND

[0003] Pure electric vehicles gradually occupy market share, and also bring more stringent requirements and challenges to high and low pressure. The application of technology is increasing, and black technology is emerging in an endless stream. The requirements for vehicles are also getting higher and higher. Vehicles are not only daily travel tools, but also mobile terminals, entertainment terminals, mobile homes, etc. At the same time, it also brings new problems and opportunities: such as serious low-voltage battery power supply, how to unlock the door during road rescue and a series of operations. Under the premise of no electricity, how to realize low-cost, high-efficiency, compatible technology design, and let customers have a more comfortable and safer experience is the original intention of the design. SUMMARY

[0004] The following is a summary of the subject matter of the detailed description herein. This summary is not intended to limit the scope of the claims.

[0005] The present application provides an unlock control system, method and vehicle, which can open the vehicle door under the premise of ensuring the convenience, reliability and anti-theft safety of the vehicle power-on operation, thereby powering on the vehicle low-voltage battery and making the vehicle regain low-voltage power supply and restore the normal function of the vehicle electrical system, thereby realizing a low-cost, high-reliability and compatible technology design, and letting customers have a more comfortable and safer experience.

[0006] The application provides an unlocking control system, comprising: a power management module, a first cut-off protection unit, a second cut-off protection unit, an external power supply interface, a low-voltage storage battery and a door module which are connected with the power management module in communication; wherein the external power supply interface is used for connecting an external emergency power supply in a vehicle power shortage state; the power management module is used for communicating with the external emergency power supply and detecting the voltage of the external emergency power supply when the first cut-off protection unit is turned on; if the voltage of the external emergency power supply matches the voltage of a low-voltage power grid of the vehicle, the second cut-off protection unit is turned on, and the low-voltage storage battery is connected to the external emergency power supply to perform a power supply operation on the low-voltage storage battery; the low-voltage storage battery is used for supplying power to the low-voltage power grid of the vehicle; and the door module is used for driving a door lock to complete an unlocking action when the door lock receives a vehicle door unlocking signal and the identity information of a user is authenticated.

[0007] Optionally, the power management module is further used for monitoring the battery SOC of the low-voltage storage battery, and outputting a first cut-off signal and controlling the first cut-off protection unit to disconnect the loop between the external power supply interface and the low-voltage storage battery if the battery SOC of the low-voltage storage battery meets a use threshold during the power supply operation.

[0008] Optionally, the power management module is further used for controlling the low-voltage storage battery to supply power to the low-voltage power grid of the vehicle, outputting a second cut-off signal and controlling the second cut-off protection unit to disconnect the loop between the low-voltage storage battery and the first cut-off protection unit.

[0009] Optionally, the system further comprises an identification module which is connected with the power management module in communication; the identification module is used for receiving a request signal of the user and sending an authentication signal for authenticating the identity of the user to the power management module.

[0010] Optionally, the power management module is connected to the first cut-off protection unit through a first control circuit, the first control circuit is used for being electrically connected with a first relay in the first cut-off protection unit; one end of the first control circuit is connected with the current input end of a first control coil of the first relay, and the current output end of the first control coil of the first relay is grounded; and the first relay is a normally closed relay.

[0011] Optionally, the primary control circuit comprises a first switch tube, a second switch tube, a first resistor and a second resistor; a first end of the first switch tube and a first end of the second switch tube are connected in common and connected to the low-voltage storage battery; a second end of the first switch tube is connected to the power management module through the first resistor; a third end of the first switch tube is connected to a second end of the second switch tube; a third end of the second switch tube is connected to a current input end of a first control coil of the first relay through the second resistor.

[0012] Optionally, the power management module is connected to the secondary cut-off protection unit through a secondary control circuit, and the secondary control circuit is used for electrical connection with a second relay in the secondary cut-off protection unit; one end of the secondary control circuit is connected to a current input end of a second control coil of the second relay, and a current output end of the second control coil of the second relay is grounded; the second relay is a normally open relay.

[0013] Optionally, the secondary control circuit comprises a third resistor, a third switch tube and a fourth resistor; a first end of the third switch tube is connected to a line between an output end of a first relay switch of the first relay and an input end of a second relay switch of the second relay; a second end of the third switch tube is connected to the power management module through the third resistor; and a third end of the third switch tube is connected to the current input end of the second control coil of the second relay through the fourth resistor.

[0014] Another aspect of the present application also provides an unlocking control method, comprising: detecting an electric quantity of a low-voltage storage battery; when it is detected that the electric quantity of the low-voltage storage battery is lower than a use threshold of a battery SOC, connecting an external emergency power supply through an external power supplement interface; detecting a voltage of the external emergency power supply; when it is detected that the voltage of the external emergency power supply matches a voltage of a low-voltage power grid of a vehicle, controlling the secondary cut-off protection unit to be turned on, so that the low-voltage storage battery connects the external emergency power supply to perform a power supplement operation on the low-voltage storage battery; receiving an authentication signal for authenticating identity information of a user, and authenticating the identity information of the user; if the identity information of the user is authenticated, generating a vehicle door unlocking signal, and controlling the door module to drive a door lock to complete an unlocking action.

[0015] Optionally, the method further comprises: before the receiving of the authentication signal for authenticating the identity information of the user and the authenticating of the identity information of the user, detecting a battery SOC of the low-voltage storage battery during the power supplement operation; when it is detected that the battery SOC of the low-voltage storage battery meets the use threshold, outputting a primary cut-off signal and controlling the primary cut-off protection unit to disconnect a loop between the external power supplement interface and the low-voltage storage battery.

[0016] Optionally, the method further comprises: before receiving the authentication signal for authenticating the identity information of the user and authenticating the identity information of the user, controlling switching the low-voltage storage battery to supply power to the low-voltage power grid of the vehicle, simultaneously outputting a secondary cut-off signal and controlling the secondary cut-off protection unit to disconnect the loop between the low-voltage storage battery and the primary cut-off protection unit.

[0017] Optionally, the receiving the authentication signal for authenticating the identity information of the user and authenticating the identity information of the user, and if the identity information of the user is authenticated, generating a vehicle door unlocking signal and controlling the door module to drive the door lock to complete the unlocking action, comprises: the identification module receives the request signal of the user and sends the authentication signal for authenticating the identity of the user to the power management module; the power management module receives the authentication signal sent by the identification module and authenticates the identity information of the user; in the case that the identity information of the user is authenticated, the power management module generates a vehicle door unlocking signal and sends the vehicle door unlocking signal to the door module; the door module receives the vehicle door unlocking signal and issues a door lock instruction to drive the door lock to complete the unlocking action.

[0018] Another aspect of the present application also provides a vehicle comprising the unlocking control system.

[0019] The unlocking control system, method and vehicle provided by the present application can be connected to an external emergency power supply through an external power supply interface in the case of vehicle power loss. The power management module collects the voltage of the external emergency power supply and performs detection, and when it is detected that the voltage of the external emergency power supply matches the voltage of the low-voltage power grid of the vehicle, the power management module controls the secondary cut-off protection unit to be connected, so that the low-voltage storage battery is connected to the external emergency power supply for power supply operation. After the low-voltage storage battery is powered to meet the use threshold of the battery SOC, the low-voltage storage battery supplies power to the low-voltage power grid of the vehicle, and then the normal function of the vehicle electrical system is restored. The door module can drive the door lock to complete the unlocking action if it receives the vehicle door unlocking signal and the identity information of the user is authenticated. This way, the cost is low and the safety is high. Especially, the vehicle door can only be unlocked when the identity information of the user is authenticated, which ensures the convenience, reliability and anti-theft safety of the vehicle power-on operation, opens the vehicle door, and realizes a low-cost, high-reliability and compatible design with a sense of technology, so that the customer experience is more comfortable and safe.

[0020] Other aspects can become apparent from a review of the drawings and detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0021] FIG. 1 is a circuit schematic diagram of an unlocking control system in an embodiment of the present application.

[0022] Fig. 2 is a flowchart of an unlocking control method according to an embodiment of the present application.

[0023] Reference signs: 1, power management module; 2, first cut-off protection unit; 3, second cut-off protection unit; 4, external power supply interface; 5, low-voltage storage battery; 6, door module; 7, identification module; 8, first control circuit; 9, second control circuit. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0025] It should be noted that the diagrams provided in the embodiments of the present application only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component when actually implemented can be arbitrarily changed, and the layout pattern of the components can also be more complex.

[0026] The structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and not to limit the defined conditions under which the present application can be implemented, so it does not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect that the present application can produce and the purpose that the present application can achieve, should still fall within the scope of the technical content disclosed by the present application.

[0027] The orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "intermediate", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. in the present specification are based on the orientations or positional relationships shown in the drawings, and are only used to simplify the description, and not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0028] Currently, how to implement low-voltage battery power supply, drive door lock and open the door is a common quality problem after sale. The common solutions are as follows: reserving a mechanical lock core to match a mechanical key. This solution has low cost, high mechanical reliability, but poor sense of technology, and there are problems in layout at the design stage and the portability of mechanical keys after the popularization of digital keys. Reserving an external power supply for the corresponding door module, and driving the door lock to unlock by the external power supply. This solution can improve the brand technology, but has high cost and lacks in safety such as functional safety, information security and anti-theft.

[0029] Therefore, the embodiments of the present application provide an unlocking control system and method and a vehicle. In the case of serious low-voltage battery power supply, the external emergency power supply is used for power compensation operation. After the power compensation operation meets the battery SOC (State of Charge) use threshold, the low-voltage battery supplies power to the vehicle low-voltage power grid, so that the vehicle electrical system restores normal function, and then the door module drives the door lock to complete the unlocking action in the case that the vehicle door unlocking signal is received and the user's identity information is authenticated. On the premise of ensuring the convenience, reliability and anti-theft safety of the vehicle power-on operation, the vehicle door is opened, so as to realize a low-cost, high-reliability and compatible technology design, and make the customer experience more comfortable and safe.

[0030] The unlocking control system provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings. Please refer to FIG. 1, the unlocking control system includes a power management module 1 and a first cut-off protection unit 2, a second cut-off protection unit 3, an external power compensation interface 4, a low-voltage battery 5 and a door module 6 which are respectively in communication connection with the power management module 1. The external power compensation interface 4 is used to connect the external emergency power supply in the case of vehicle power shortage. The power management module 1 is used to connect the external emergency power supply in the case that the first cut-off protection unit 2 is connected, and collect and detect the voltage of the external emergency power supply. If the voltage matches the voltage of the vehicle low-voltage power grid, the power management module 1 controls the second cut-off protection unit 3 to be connected, so that the low-voltage battery 5 connects the external emergency power supply to compensate the low-voltage battery 5. The low-voltage battery 5 is used to supply power to the vehicle low-voltage power grid after the power compensation operation meets the battery SOC (State of Charge) use threshold. The door module 6 is used to drive the door lock to complete the unlocking action in the case that the vehicle door unlocking signal is received and the user's identity information is authenticated after it is powered by the low-voltage battery 5.

[0031] In this embodiment, by reserving the external power supply interface 4, when the low-voltage battery 5 is seriously powered, the external emergency power supply can be connected through the external power supply interface 4. The power management module 1 will first detect the voltage of the external emergency power supply. When it is detected that the voltage of the external emergency power supply does not match the voltage of the vehicle low-voltage power grid, such as when the voltage of the external emergency power supply is 48V and the required voltage of the vehicle low-voltage power grid is 12V, the secondary cut-off protection unit 3 will remain in the open state, and then the external emergency power supply cannot access the low-voltage battery 5 for emergency power-on or power supply operation, thereby protecting the vehicle low-voltage power grid circuit. When it is detected that the voltage of the external emergency power supply matches the voltage of the vehicle low-voltage power grid, the power management module 1 controls the secondary cut-off protection unit 3 to be connected, so that the low-voltage battery 5 is connected to the external emergency power supply for power supply operation. That is, the external emergency power supply in this embodiment is to perform emergency power-on or power supply operation on the low-voltage battery 5, and then the low-voltage battery 5 is used as a power supply to supply power to the vehicle low-voltage power grid. When the low-voltage battery 5 is powered to meet the use threshold of the battery SOC, the low-voltage battery 5 supplies power to the vehicle low-voltage power grid, so that the vehicle regains low-voltage power supply and restores the normal function of the vehicle electrical system, meeting the vehicle use requirements, and then the door module 6 can drive the door lock to complete the unlocking action when it receives the vehicle door unlocking signal and the user's identity information is authenticated. Compared with the related art in which the low-voltage battery is seriously powered, the corresponding door module is reserved with an external power supply, and the external power supply directly supplies power to the door module to drive the door lock to unlock, resulting in no anti-theft, easy opening of the vehicle door and easy loss of property, as well as the use of a mechanical key, poor technology and inconvenient to carry, the method in this embodiment has low cost and high safety, especially when the vehicle door is unlocked, the user's identity information needs to be authenticated before unlocking, which ensures the convenience, reliability and anti-theft safety of the vehicle power-on operation, opens the vehicle door, thereby realizing a low-cost, high-reliability and technology-compatible design, providing a more comfortable and safer experience for customers. It should be noted that the vehicle door in this embodiment can be only the driver's cabin door, but not other vehicle doors, or all vehicle doors, which are not limited in this embodiment and can be selected according to actual conditions.

[0032] Please continue to refer to Fig. 1, in the embodiment, it needs to be pointed out that the power management module 1 is also used for monitoring the charging voltage, charging current and battery SOC of the low-voltage storage battery 5. If the battery SOC of the low-voltage storage battery 5 meets the use threshold during the charging operation, the power management module 1 outputs a first cut-off signal to the first cut-off protection unit 2, and the first cut-off protection unit 2 receives the first cut-off signal and disconnects the loop between the external charging interface 4 and the low-voltage storage battery 5.

[0033] In the process of charging the low-voltage storage battery 5 by the external emergency power supply, the power management module 1 monitors the charging voltage and charging current of the low-voltage storage battery 5 in real time to prevent overcurrent from causing line and controller failure. At the same time, the power management module 1 also monitors the charging time, and does not allow long-time charging of the low-voltage storage battery 5 to avoid the risk of overheating of the line and self-ignition. The power management module 1 also monitors the battery SOC of the low-voltage storage battery 5. When the low-voltage storage battery 5 is charged to meet the use threshold of the battery SOC (different capacity low-voltage storage batteries 5 need to be calibrated), such as greater than 30%, the external emergency power supply needs to be cut off to intervene in the low-voltage power grid of the vehicle, and then the power management module 1 outputs a first cut-off signal to the first cut-off protection unit 2, and the first cut-off protection unit 2 receives the first cut-off signal and disconnects the loop between the external charging interface 4 and the low-voltage storage battery 5. At this time, the external emergency power supply and the low-voltage storage battery 5 are not connected, and the external emergency power supply cannot charge the low-voltage storage battery 5 through the external charging interface 4, so as to protect the line of the low-voltage power grid of the vehicle and realize circuit protection. Preferably, the external charging interface 4 is electrically connected to the external emergency power supply through a power connection line, the external charging interface 4 is provided with dustproof and waterproof requirements, and has current reverse protection.

[0034] In addition, the external emergency power supply in the embodiment can be used as a backup power supply for charging / electrical supplement in the vehicle power shortage state, which has the same voltage as the low-voltage storage battery 5 of the vehicle. The voltage of the low-voltage storage battery 5 of the vehicle is generally 12V.

[0035] Please continue to refer to Fig. 1, in the embodiment, it also needs to be pointed out that when the low-voltage storage battery 5 is charged to meet the use threshold of the battery SOC, the power management module 1 controls to switch the low-voltage storage battery 5 to supply power to the low-voltage power grid of the vehicle, and outputs a second cut-off signal to the second cut-off protection unit 3, and the second cut-off protection unit 3 receives the second cut-off signal and disconnects the loop between the low-voltage storage battery 5 and the first cut-off protection unit 2.

[0036] After the low-voltage storage battery 5 is charged to meet the use threshold of the battery SOC, the external emergency power supply does not need to perform the charging operation on the low-voltage storage battery 5 for a long time. At this time, the circuit between the external charging interface 4 and the low-voltage storage battery 5 is disconnected by the first cut-off protection unit 2, and then the external emergency power supply cannot continue to perform the charging operation on the low-voltage storage battery 5. At this time, the power management module 1 controls the switching of the low-voltage storage battery 5 to supply power to the vehicle low-voltage power grid, so that the vehicle electrical system restores normal function, and the power management module 1 also outputs a second cut-off signal and controls the second cut-off protection unit 3 to further disconnect the circuit between the low-voltage storage battery 5 and the first cut-off protection unit 2. In the embodiment, the first cut-off protection unit 2 and the second cut-off protection unit 3 are jointly controlled, which can realize redundancy. In the case that the first cut-off protection unit 2 fails, the second cut-off protection unit 3 can further disconnect the circuit between the low-voltage storage battery 5 and the first cut-off protection unit 2, so that the external emergency power supply cannot be accessed, and the protection of the vehicle circuit is realized.

[0037] Please continue to refer to FIG. 1, in the embodiment, it also needs to be explained that the unlocking control system further comprises an identification module 7, the identification module 7 is in communication connection with the power management module 1, and the identification module 7 is used to receive the request signal of the user and send the authentication signal for identity authentication of the user to the power management module 1.

[0038] In the embodiment, the request signal sent by the user is received by the identification module 7. The request signal can be used to determine whether the user of the vehicle has the intention to open the door, so as to determine whether to unlock the door, thereby improving the safety. Specifically, for the vehicle model that can use the remote key to unlock the door, the request signal can be the key signal of the remote key; for the vehicle model that can use the mobile terminal of the user of the vehicle to unlock the door, the request signal can also be the distance signal between the mobile terminal and the vehicle; for the vehicle model that can use the fingerprint to unlock the door, the request signal can also be the fingerprint signal of the user of the vehicle; the embodiment is not limited to any one, and all are within the protection scope of the embodiment of the application.

[0039] Of course, the identity information of the user is also authenticated in this embodiment to identify the owner information, and the legal identity needs to be met to unlock the door. After receiving the request signal of the user, the identification module 7 also sends an authentication signal for authenticating the identity of the user to the power management module 1. After receiving the authentication signal, the power management module 1 authenticates the identity information of the user. In the case that the identity information of the user is authenticated, the power management module 1 generates a door unlocking signal and sends it to the door module 6. At this time, the door module 6 receives the door unlocking signal and issues a door lock instruction to control the corresponding action. For example, in the case that the identity information of the user is authenticated and the door module 6 receives the door unlocking signal, the door lock is driven to complete the unlocking action, and then the user can enter the vehicle interior to further decide the next action, such as releasing the handbrake, pushing the vehicle, moving the vehicle, towing the vehicle, and unlocking the charging port cover, etc. For example, after the charging port cover is unlocked, the high-voltage storage battery can be quickly charged through V2V (Vehicle to Vehicle) or charged through a mobile device. After the high-voltage storage battery is charged to meet the use threshold of the battery SOC, the power management module 1 can also request to control the high-voltage storage battery to charge the low-voltage storage battery 5, realizing intelligent switching of high-voltage charging and low-voltage charging. Of course, when the power (for example, battery SOC) of the high-voltage storage battery is lower than the use threshold such as 20%, the power management module 1 controls to close the output of the high-voltage storage battery, at this time only the low-voltage storage battery 5 can be charged through the external charging interface 4.

[0040] In some embodiments, authenticating the identity of the user includes but is not limited to face image authentication and voice information authentication, wherein the face image information can be obtained through an image sensor installed on the vehicle, for example, a vehicle-mounted camera; the voice information can be obtained through a microphone on the vehicle. That is, image recognition and voiceprint recognition technologies are used to collect face image information and voice information of the user through a camera and a microphone, respectively, so as to extract face features of the face image information and voiceprint features of the voice information, and match the face features and the voiceprint features with pre-stored features to authenticate the identity of the user. It should be noted that various feature extraction methods can be used to extract the face features of the face image information and the voiceprint features of the voice information, as long as the relevant face features and voiceprint features can be extracted, and the application does not limit the use of which feature extraction method.

[0041] Please continue to refer to Figure 1, in the embodiment, it is also necessary to point out that the power management module 1 is connected to the primary cut-off protection unit 2 through a primary control circuit 8. The primary control circuit 8 is used to be electrically connected with the first relay K1 in the primary cut-off protection unit 2. One end of the primary control circuit 8 is connected with the current input end of the first control coil J1 of the first relay K1, and the current output end of the first control coil J1 of the first relay K1 is grounded. The primary control circuit 8 is used to make the first control coil J1 of the first relay K1 electrified to make the first relay switch S1 of the first relay K1 open. The first relay K1 in the embodiment is a normally closed relay.

[0042] The power management module 1 is connected to the secondary cut-off protection unit 3 through a secondary control circuit 9. The secondary control circuit 9 is used to be electrically connected with the second relay K2 in the secondary cut-off protection unit 3. One end of the secondary control circuit 9 is connected with the current input end of the second control coil J2 of the second relay K2, and the current output end of the second control coil J2 of the second relay K2 is grounded. The secondary control circuit 9 is used to make the second control coil J2 of the second relay K2 electrified to make the second relay switch S2 of the second relay K2 close. The second relay K2 in the embodiment is a normally open relay.

[0043] It is also necessary to point out that the input end of the first relay switch S1 and the positive end of the external power supply interface 4 are connected, the output end of the first relay switch S1 is connected with the power management module 1 and the input end of the second relay switch S2 respectively, the output end of the second relay switch S2 is connected with the voltage input end of the low-voltage storage battery 5, and the voltage output end of the low-voltage storage battery 5 is connected with the negative end of the external power supply interface 4. Thus, in the case that the first relay switch S1 and the second relay switch S2 are both turned on, the external emergency power supply and the low-voltage storage battery 5 constitute a power supply loop through the external power supply interface 4.

[0044] When the low-voltage battery 5 needs to be connected or charged, the external emergency power supply is connected to the external charging interface 4 through the wire. Since the first relay K1 of the primary cut-off protection unit 2 is a normally closed relay, the power management module 1 can receive the voltage signal of the external emergency power supply at this time, and detect the voltage of the external emergency power supply. When it is detected that the voltage of the external emergency power supply matches the voltage of the vehicle low-voltage power grid, the power management module 1 controls the second relay K2 in the secondary cut-off protection unit 3 to be closed through the secondary control circuit 9, at this time, the external emergency power supply and the low-voltage battery 5 are connected, and then the external emergency power supply can perform emergency connection or charging operation on the low-voltage battery 5. Of course, when it is detected that the voltage of the external emergency power supply does not match the voltage of the vehicle low-voltage power grid, the power management module 1 does not control the second relay K2 in the secondary cut-off protection unit 3 to be closed through the secondary control circuit 9. After the low-voltage battery 5 is charged to the battery SOC satisfying the use threshold, the power management module 1 controls the first relay K1 in the primary cut-off protection unit 2 to be disconnected through the primary control circuit 8, at this time, the external emergency power supply cannot be connected, and the vehicle low-voltage power grid circuit is protected. At the same time, the power management module 1 controls the low-voltage battery 5 to supply power to the vehicle low-voltage power grid, and further controls the second relay K2 in the secondary cut-off protection unit 3 to be disconnected.

[0045] In some embodiments, the primary control circuit 8 includes a first switch tube Q1, a second switch tube Q2, a first resistor R1, and a second resistor R2. The first end of the first switch tube Q1 and the first end of the second switch tube Q2 are connected to the low-voltage battery 5; the second end of the first switch tube Q1 is connected to the power management module 1 through the first resistor R1; the third end of the first switch tube Q1 is connected to the second end of the second switch tube Q2, and the third end of the second switch tube Q2 is connected to the current input end of the first control coil J1 of the first relay K1 through the second resistor R2. In one example, the first switch tube Q1 is a first triode, and the second switch tube Q2 is a second triode, the collector of the first triode and the collector of the second triode are connected to the low-voltage battery 5, the base of the first triode is used to be connected to the power management module 1 to receive the circuit connection signal, the emitter of the first triode is used to be connected to the base of the second triode, and the emitter of the second triode is connected to the current input end of the first control coil J1 of the first relay K1 through the second resistor R2, wherein the first triode and the second triode are NPN type triodes. By using the above-mentioned primary control circuit 8, when the power management module 1 outputs a primary cut-off signal to control the action of the primary cut-off protection unit 2, the influence of the external emergency power supply on the vehicle circuit can be isolated.

[0046] In some embodiments, the secondary control circuit 9 comprises a third resistor R3, a third switch tube Q3 and a fourth resistor R4. The second end of the third switch tube Q3 is connected to the power management module 1 through the third resistor R3; the first end of the third switch tube Q3 is connected to the line between the output end of the first relay switch S1 of the first relay K1 and the input end of the second relay switch S2 of the second relay K2; the third end of the third switch tube Q3 is connected to the current input end of the second control coil J2 of the second relay K2 through the fourth resistor R4. In one example, the third switch tube Q3 is a third triode, the base of the third triode is used to be connected to the power management module 1 to receive the circuit connection signal, the collector of the third triode is connected to the line between the output end of the first relay switch S1 of the first relay K1 and the input end of the second relay switch S2 of the second relay K2, and the emitter of the third triode is connected to the current input end of the second control coil J2 of the second relay K2 through the fourth resistor R4, wherein the third triode is an NPN type triode. By using the above-mentioned secondary control circuit 9, when the power management module 1 outputs the secondary cut-off signal to control the action of the secondary cut-off protection unit 3, the influence of the external emergency power supply on the vehicle circuit itself can be isolated.

[0047] In the embodiments of the present application, an unlocking control method is also provided. Referring to FIG. 1 and FIG. 2, the unlocking control method comprises the following steps S201 to S205.

[0048] In S201, the power of the low-voltage storage battery 5 is detected, and when it is detected that the power of the low-voltage storage battery 5 is lower than the use threshold of the battery SOC, the external emergency power supply is connected through the external power supplement interface 4.

[0049] In the embodiments, it should be noted that the power management module 1 detects the power of the low-voltage storage battery 5 in real time, and when it is detected that the power of the low-voltage storage battery 5 is lower than the use threshold of the battery SOC (State of Charge), the external emergency power supply is connected through the external power supplement interface 4 by using the wire, and then the external emergency power supply can be used to perform the emergency power connection or power supplement operation on the low-voltage storage battery 5.

[0050] In S202, the voltage of the external emergency power supply is detected, and when it is detected that the voltage of the external emergency power supply matches the voltage of the low-voltage power grid of the vehicle, the secondary cut-off protection unit 3 is controlled to be turned on, so that the low-voltage storage battery 5 is connected to the external emergency power supply to perform the power supplement operation on the low-voltage storage battery 5.

[0051] In the embodiment, it is to be noted that before the external emergency power source is used to perform emergency power connection or power supplement for the low-voltage storage battery 5, the power management module 1 also detects the voltage of the external emergency power source. When it is detected that the voltage of the external emergency power source does not match the voltage of the low-voltage power grid of the whole vehicle, the secondary cut-off protection unit 3 is not connected, that is, no loop is formed between the external emergency power source and the low-voltage storage battery 5; when it is detected that the voltage of the external emergency power source matches the voltage of the low-voltage power grid of the whole vehicle, the power management module 1 controls the secondary cut-off protection unit 3 to be connected, so that the low-voltage storage battery 5 is connected to the external emergency power source to perform power supplement operation for the low-voltage storage battery 5.

[0052] In S203, the battery SOC of the low-voltage storage battery 5 is detected during the power supplement operation; when it is detected that the battery SOC of the low-voltage storage battery 5 meets the use threshold value, a primary cut-off signal is output and the primary cut-off protection unit 2 is controlled to disconnect the loop between the external power supplement interface 4 and the low-voltage storage battery 5.

[0053] In the embodiment, it is to be noted that after the power supplement operation is started, the power management module 1 detects the power supplement voltage, the power supplement current and the battery SOC of the low-voltage storage battery 5 in real time, and starts power supplement timing, and judges whether the power supplement stop condition is met in real time during the power supplement process. When it is detected that the battery SOC of the low-voltage storage battery 5 meets the use threshold value, the power management module 1 outputs a primary cut-off signal and controls the primary cut-off protection unit 2 to disconnect the loop between the external power supplement interface 4 and the low-voltage storage battery 5, so that the external emergency power source cannot be connected to the vehicle circuit through the external power supplement interface 4.

[0054] In S204, the low-voltage storage battery 5 is controlled to supply power to the low-voltage power grid of the whole vehicle, and a secondary cut-off signal is output and the secondary cut-off protection unit 3 is controlled to disconnect the loop between the low-voltage storage battery 5 and the primary cut-off protection unit 2.

[0055] In the embodiment, it is to be noted that when the low-voltage storage battery 5 is supplemented to meet the use threshold value of the battery SOC, the primary cut-off protection unit 2 will be disconnected first, at this time, the power management module 1 controls the low-voltage storage battery 5 to supply power to the low-voltage power grid of the whole vehicle, so that the vehicle electrical system recovers normal function, and at the same time, a secondary cut-off signal is output and the secondary cut-off protection unit 3 is controlled to further disconnect the loop between the low-voltage storage battery 5 and the primary cut-off protection unit 2, so that the external emergency power source cannot be connected to the vehicle circuit, and the protection of the vehicle circuit is realized.

[0056] In S205, an authentication signal for authenticating the identity information of the user is received, and the identity information of the user is authenticated; if the identity information of the user is authenticated, a vehicle door unlocking signal is generated, and the door module 6 is controlled to drive the door lock to complete the unlocking action.

[0057] In the embodiment, it is to be noted that, when the external emergency power source performs emergency power connection or power supplement to the low-voltage storage battery 5 to meet the use threshold of the battery SOC, the power supplement to the low-voltage storage battery 5 is stopped, the low-voltage storage battery 5 can supply power to the low-voltage power grid of the vehicle, and then the low-voltage power grid recovers the function, for example, the identification module 7 can identify the door opening intention of the user and receive the corresponding request signal under the condition of being supplied with power by the low-voltage storage battery 5. For the vehicle model that can use the remote key to unlock the door, the request signal can be the key signal of the remote key; for the vehicle model that can use the mobile terminal of the vehicle user to unlock the door, the request signal is the distance signal between the mobile terminal and the vehicle; for the vehicle model that can use the fingerprint to unlock the door, the request signal can also be the fingerprint signal of the vehicle user. After receiving the request signal of the user, the identification module 7 sends an authentication signal for identity authentication of the user to the power management module 1, and by authenticating the identity information of the user, it can be ensured that the user is a legal user, thereby playing a role of anti-theft.

[0058] The power management module 1 receives the authentication signal sent by the identification module 7 and authenticates the identity information of the user, including but not limited to face image authentication and voice information authentication. In the case that the identity information of the user is authenticated, the power management module 1 generates a door unlocking signal and sends the door unlocking signal to the door module 6, and the door module 6 issues a door lock instruction after receiving the door unlocking signal to control the corresponding door to be unlocked. After the door is unlocked, the vehicle user can enter the vehicle interior and further decide the next action, such as releasing the handbrake, pushing the vehicle, moving the vehicle, towing the vehicle, and unlocking the charging port cover, etc.

[0059] In the embodiment of the application, a vehicle is also provided, which comprises the unlocking control system described above.

[0060] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the description.

[0061] The above-described embodiments only express several implementation manners of the application, the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the application. It should be noted that, for those skilled in the art, without departing from the concept of the application, a number of variations and improvements can be made, which are all within the protection scope of the application. Therefore, the protection scope of the application should be subject to the appended claims.

Claims

1. An unlocking control system, comprising: a power management module (1); and a primary cut-off protection unit (2), a secondary cut-off protection unit (3), an external power supply interface (4), a low-voltage storage battery (5) and a door module (6) respectively in communication connection with the power management module (1); wherein, the external power supply interface (4) is configured to connect an external emergency power supply in a vehicle power shortage state; the power management module (1) is configured to communicate with the external emergency power supply and detect the voltage of the external emergency power supply when the primary cut-off protection unit (2) is turned on, and control the secondary cut-off protection unit (3) to be turned on if the voltage of the external emergency power supply matches the voltage of the low-voltage power grid of the vehicle, so that the low-voltage storage battery (5) is connected to the external emergency power supply to perform a power compensation operation on the low-voltage storage battery (5); the low-voltage storage battery (5) is configured to supply power to the low-voltage power grid of the vehicle; the door module (6) is configured to drive the door lock to complete the unlocking action when it receives a vehicle door unlocking signal and the identity information of the user is authenticated after being powered by the low-voltage storage battery (5).

2. The unlocking control system according to claim 1, wherein, the power management module (1) is further configured to: monitor the battery SOC of the low-voltage storage battery (5); and output a primary cut-off signal and control the primary cut-off protection unit (2) to disconnect the loop between the external power supply interface (4) and the low-voltage storage battery (5) if the battery SOC of the low-voltage storage battery (5) meets the use threshold during the power compensation operation.

3. The unlocking control system according to claim 2, wherein, the power management module (1) is further configured to: control the low-voltage storage battery (5) to supply power to the low-voltage power grid of the vehicle, and output a secondary cut-off signal and control the secondary cut-off protection unit (3) to disconnect the loop between the low-voltage storage battery (5) and the primary cut-off protection unit (2).

4. The unlocking control system according to claim 1, further comprising an identification module (7) in communication connection with the power management module (1); the identification module (7) is configured to receive a request signal of the user and send an authentication signal for authenticating the identity of the user to the power management module (1).

5. The unlocking control system according to any one of claims 1 to 4, wherein, the power management module (1) is connected to the primary cut-off protection unit (2) through a primary control circuit (8), and the primary control circuit (8) is configured to be electrically connected with a first relay (K1) in the primary cut-off protection unit (2); one end of the primary control circuit (8) is connected to the current input end of a first control coil (J1) of the first relay (K1), and the current output end of the first control coil (J1) of the first relay (K1) is grounded; the first relay (K1) is a normally closed relay.

6. The unlocking control system according to claim 5, wherein, The primary control circuit (8) comprises a first switch tube (Q1), a second switch tube (Q2), a first resistor (R1) and a second resistor (R2); The first end of the first switch tube (Q1) and the first end of the second switch tube (Q2) are connected to the low-voltage storage battery (5); The second end of the first switch tube (Q1) is connected to the power management module (1) through the first resistor (R1); The third end of the first switch tube (Q1) is connected to the second end of the second switch tube (Q2); The third end of the second switch tube (Q2) is connected to the current input end of the first control coil (J1) of the first relay (K1) through the second resistor (R2).

7. The unlocking control system according to claim 5, wherein, The power management module (1) is connected to the secondary cut-off protection unit (3) through a secondary control circuit (9), and the secondary control circuit (9) is arranged to be electrically connected with a second relay (K2) in the secondary cut-off protection unit (3); One end of the secondary control circuit (9) is connected to the current input end of the second control coil (J2) of the second relay (K2), and the current output end of the second control coil (J2) of the second relay (K2) is grounded; The second relay (K2) is a normally open relay.

8. The unlocking control system according to claim 7, wherein, The secondary control circuit (9) comprises a third resistor (R3), a third switch tube (Q3) and a fourth resistor (R4); The first end of the third switch tube (Q3) is connected to the line between the output end of the first relay switch (S1) of the first relay (K1) and the input end of the second relay switch (S2) of the second relay (K2); The second end of the third switch tube (Q3) is connected to the power management module (1) through the third resistor (R3); The third end of the third switch tube (Q3) is connected to the current input end of the second control coil (J2) of the second relay (K2) through the fourth resistor (R4).

9. An unlocking control method, performed by the unlocking control system according to any one of claims 1 to 8, the method comprising: detecting the power of the low-voltage storage battery (5), and connecting an external emergency power supply through the external power supply interface (4) when it is detected that the power of the low-voltage storage battery (5) is lower than the use threshold of the battery SOC; detecting the voltage of the external emergency power supply, and controlling the secondary cut-off protection unit (3) to be turned on when it is detected that the voltage of the external emergency power supply matches the voltage of the low-voltage power grid of the vehicle, so that the low-voltage storage battery (5) is connected to the external emergency power supply to perform a power supply operation on the low-voltage storage battery (5); receiving an authentication signal for authenticating the identity information of a user, and authenticating the identity information of the user; if the identity information of the user is authenticated, generating a vehicle door unlocking signal, and controlling the door module (6) to drive the door lock to complete an unlocking action.

10. The unlocking control method according to claim 9, further comprising: Before the receiving of the authentication signal authenticating the identity information of the user and the authenticating of the identity information of the user, During the power supply operation, detecting the battery SOC of the low-voltage storage battery (5); When it is detected that the battery SOC of the low-voltage storage battery (5) meets the use threshold, outputting a first cut-off signal and controlling the first cut-off protection unit (2) to disconnect the loop between the external power supply interface (4) and the low-voltage storage battery (5).

11. The unlocking control method of claim 10, further comprising: Before the receiving of the authentication signal authenticating the identity information of the user and the authenticating of the identity information of the user, Controlling the low-voltage storage battery (5) to supply power to the low-voltage power grid of the vehicle, while outputting a second cut-off signal and controlling the second cut-off protection unit (3) to disconnect the loop between the low-voltage storage battery (5) and the first cut-off protection unit (2).

12. The unlocking control method of claim 9, wherein: The receiving of the authentication signal authenticating the identity information of the user and the authenticating of the identity information of the user; If the identity information of the user is authenticated, generating a vehicle door unlocking signal and controlling the door module (6) to drive the door lock to complete the unlocking action, including: The recognition module (7) receives the request signal of the user and sends an authentication signal authenticating the identity of the user to the power management module (1); The power management module (1) receives the authentication signal sent by the recognition module (7) and authenticates the identity information of the user; In the case that the identity information of the user is authenticated, the power management module (1) generates a vehicle door unlocking signal and sends the vehicle door unlocking signal to the door module (6); The door module (6) receives the vehicle door unlocking signal and issues a door lock instruction to drive the door lock to complete the unlocking action.

13. A vehicle comprising the unlocking control system of any one of claims 1 to 8.

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