Unlocking control system and method and vehicle

Abstract

The invention relates to an unlocking control system and method and a vehicle, and the unlocking control system comprises an external electricity supplementing interface which is used for connecting an external emergency power supply in a whole vehicle power shortage state; the power management module is used for being connected with an external emergency power supply and collecting and detecting the voltage of the external emergency power supply. If the detected voltage is matched with the low-voltage power grid voltage of the whole vehicle, the power management module controls the second-stage cut-off protection unit to be switched on, so that the low-voltage storage battery is switched on with an external emergency power supply for charging operation; the low-voltage storage battery is used for supplying power to a low-voltage power grid And the door module is used for driving a door lock to complete unlocking if a vehicle door unlocking signal is received and a user passes identity information authentication after the door module is powered by the low-voltage storage battery. The vehicle door can be opened on the premise of ensuring the reliability of vehicle power-on operation and the anti-theft safety, and the design which is low in cost and compatible with science and technology is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to an unlocking control system, method and vehicle. Background Art

[0002] Pure electric vehicles are gradually occupying the market share, which also brings more stringent requirements and challenges to high and low voltage. With the increasing application of science and technology and the emergence of new technologies, the requirements for corresponding vehicles are also getting higher and higher. They are not only daily travel tools, but also mobile terminals, entertainment terminals, mobile homes, etc. At the same time, they also bring new problems and opportunities: such as serious power failure of low-voltage batteries, how to unlock the doors during road rescue and other operations. Under the premise of no electricity, how to achieve low-cost, high-efficiency, and technologically compatible design to give customers a more comfortable and safer experience is the original intention of the design.

[0003] At present, how to implement low-voltage battery feeding, drive door locks and open car doors is a common quality problem in after-sales service. Common solutions are as follows:

[0004] First, reserve a mechanical lock core with a matching mechanical key; this method has low cost and high mechanical reliability, but it has a poor sense of technology. At the same time, there are layout issues to consider in the early stage of design, and the portability of mechanical keys after the popularization of digital keys;

[0005] Second, the corresponding door module reserves an external power supply, which is used to power the door module and drive the door lock to unlock. Although this method can enhance the brand's sense of technology, it is costly and lacks security in terms of functional safety, information security, and theft prevention.

[0006] Therefore, there is an urgent need to provide an unlocking control system, method and vehicle to solve the above-mentioned technical problems. Summary of the invention

[0007] Based on this, an unlocking control system, method and vehicle are provided, which can open the vehicle door while ensuring the convenience, reliability and anti-theft safety of the vehicle's jump-starting operation, and then jump-start the vehicle's low-voltage battery and enable the vehicle to regain low-voltage power supply, thereby restoring the normal function of the vehicle's electrical system, thereby achieving a low-cost, highly reliable and technologically compatible design, allowing customers to experience more comfort and safety.

[0008] On the one hand, an unlocking control system is provided, comprising: a power management module and a primary cut-off protection unit, a secondary cut-off protection unit, an external power replenishment interface, a low-voltage battery and a door module, which are respectively connected to the power management module in communication; the external power replenishment interface is used to connect an external emergency power supply when the whole vehicle is in a low-power state; the power management module is used to connect to the external emergency power supply when the primary cut-off protection unit is turned on, and collect and detect the voltage of the external emergency power supply; if the detected voltage matches the voltage of the low-voltage power grid of the whole vehicle, the power management module controls the secondary cut-off protection unit to be turned on, so that the low-voltage battery is connected to the external emergency power supply for power replenishment operation; the low-voltage battery is used to supply power to the low-voltage power grid of the whole vehicle; the door module is used to drive the door lock to complete the unlocking action after it obtains power from the low-voltage battery if it receives a door unlocking signal and the user passes the identity information authentication.

[0009] An optional solution is that the power management module monitors the charging voltage, charging current and battery SOC of the low-voltage battery; during the charging process, if the monitored battery SOC of the low-voltage battery meets the usage threshold, the power management module outputs a first-level cut-off signal and controls the first-level cut-off protection unit to disconnect the circuit between the external charging interface and the low-voltage battery.

[0010] An optional solution is that the power management module controls the switching of the low-voltage battery to power the low-voltage power grid of the entire vehicle, while outputting a secondary cut-off signal and controlling the secondary cut-off protection unit to disconnect the loop between the low-voltage battery and the primary cut-off protection unit.

[0011] An optional solution is that the system further includes an identification module, and the identification module signal is communicatively connected with the power management module; the identification module is used to receive a user's request signal and send an authentication signal to the power management module for authenticating the user.

[0012] An optional solution is that the power management module is connected to the first-level cut-off protection unit through a first-level control circuit, and the first-level control circuit is used to be electrically connected to the relay K1 in the first-level cut-off protection unit; one end of the first-level control circuit is connected to the current input end of the control coil J1 of the relay K1, and the current output end of the control coil J1 of the relay K1 is grounded; the relay K1 is a normally closed relay.

[0013] An optional solution is that the primary control circuit includes a first switch tube Q1, a second switch tube Q2, a resistor R1 and a resistor R2; the first end of the first switch tube Q1 and the first end of the second switch tube Q2 are connected in common and connected to the output end of the low-voltage battery; the second end of the first switch tube Q1 is connected to the power management module through the 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 control coil J1 of the relay K1 through the resistor R2.

[0014] An optional solution is that 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 to be electrically connected to the relay K2 in the secondary cut-off protection unit; one end of the secondary control circuit is connected to the current input end of the control coil J2 of the relay K2, and the current output end of the control coil J2 of the relay K2 is grounded; the relay K2 is a normally open relay.

[0015] An optional solution is that the secondary control circuit includes a resistor R3, a third switch tube Q3 and a resistor R4; the first end of the third switch tube Q3 is connected to the line between the output end of the relay switch S1 of the relay K1 and the input end of the relay switch S2 of the relay K2; the second end of the third switch tube Q3 is connected to the power management module through the resistor R3; and the third end of the third switch tube Q3 is connected to the current input end of the control coil J2 of the relay K2 through the resistor R4.

[0016] On the other hand, the present invention also provides an unlocking control method, comprising the following steps:

[0017] Detect the power of the low-voltage battery, and when it is detected that the power of the low-voltage battery is lower than the usage threshold of the battery SoC, connect an external emergency power supply through an external power supply interface;

[0018] Detecting the voltage of the external emergency power supply, and when detecting that the voltage of the external emergency power supply matches the voltage of the low-voltage power grid of the vehicle, outputting a secondary cut-off signal and controlling the secondary cut-off protection unit to be turned on, so that the low-voltage battery is connected to the external emergency power supply to perform a power replenishment operation;

[0019] An authentication signal for authenticating the user's identity information is received and the authentication is performed; if the user's identity information is authenticated, a door unlocking signal is generated, and the door module is controlled to drive the door lock to complete the unlocking action.

[0020] An optional solution is that, before receiving an authentication signal for authenticating the user's identity information and performing authentication, it also includes: during the power replenishment process, the power management module detects the battery SOC of the low-voltage battery; when it is detected that the low-voltage battery is replenished to a usage domain value that meets the battery SOC, a first-level cut-off signal is output and a first-level cut-off protection unit is controlled to disconnect the circuit between the external power replenishment interface and the low-voltage battery.

[0021] An optional solution is that before receiving the authentication signal for authenticating the user's identity information and performing the authentication, it also includes: controlling the switching of the low-voltage battery to power the low-voltage power grid of the entire vehicle, and at the same time outputting a secondary cut-off signal and controlling the secondary cut-off protection unit to disconnect the loop between the low-voltage battery and the primary cut-off protection unit.

[0022] An optional solution is that the authentication signal for authenticating the user's identity information is received and the authentication is performed; if the user's identity information authentication is passed, a door unlock signal is generated, and the door module is controlled to drive the door lock to complete the unlocking action, including: the identification module receives the user's request signal, and sends an authentication signal for authenticating the user to the power management module; the power management module receives the authentication signal sent by the identification module, and authenticates the user's identity information; when the identity information authentication is passed, the power management module generates a door unlock signal and sends it to the door module; the door module receives the door unlock signal, and issues a door lock instruction to drive the door lock to complete the unlocking action.

[0023] On the other hand, a vehicle is also provided, comprising the unlocking control system.

[0024] Beneficial effects:

[0025] The above unlocking control system, method and vehicle can be connected to an external emergency power supply by using an external power supply interface when the whole vehicle is in a power-deficient state. The power management module collects and detects 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 low-voltage power grid of the whole vehicle, the power management module controls the secondary cut-off protection unit to be turned on, so that the low-voltage battery is connected to the external emergency power supply for power supply operation. After the low-voltage battery is charged to meet the use domain value of the battery SoC, the low-voltage power grid of the whole vehicle is supplied with power, thereby restoring the normal function of the vehicle electrical system. After the door module is powered by the low-voltage battery, if it receives a door unlocking signal and the user passes the identity information authentication, it can drive the door lock to complete the unlocking action. This method has low cost and high safety, especially when the user needs to pass the identity information authentication to unlock the door. Under the premise of ensuring the convenience, reliability and anti-theft safety of the vehicle power-on operation, the door is opened, thereby realizing a low-cost, high-reliability and technologically compatible design, making the customer experience more comfortable and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A circuit diagram of an unlocking control system in one embodiment;

[0027] Figure 2 The figure is a flowchart of an unlocking control method in one embodiment.

[0028] Figure numerals: 1. Power management module; 2. Level 1 cut-off protection unit; 3. Level 2 cut-off protection unit; 4. External power supply interface; 5. Low-voltage battery; 6. Door module; 7. Identification module; 8. Level 1 control circuit; 9. Level 2 control circuit. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present application in a schematic manner, and therefore the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0031] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0032] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] The embodiments of the present application provide an unlocking control system, method and vehicle, which can perform a power replenishment operation through an external emergency power supply when the low-voltage battery is severely powered off. After the power is replenished to meet the battery SoC usage domain value of the low-voltage battery, the low-voltage power grid of the entire vehicle is powered by the low-voltage battery, so that the vehicle's electrical system can resume normal function. Then, when the door module receives the door unlocking signal and the user passes the identity authentication, it drives the door lock to complete the unlocking action. Under the premise of ensuring the convenience, reliability and anti-theft security of the vehicle's power-on operation, the door is opened, thereby realizing a low-cost, highly reliable, and technologically compatible design, making the customer experience more comfortable and safer.

[0034] The following is a detailed description of an unlocking control system provided by this embodiment in conjunction with the accompanying drawings. Figure 1 As shown, it includes: a power management module 1 and a first-level cut-off protection unit 2, a second-level cut-off protection unit 3, an external power supply interface 4, a low-voltage battery 5 and a door module 6 that are respectively connected to the power management module 1 in communication; wherein the external power supply interface 4 is used to connect an external emergency power supply when the vehicle is in a power-deficient state; the power management module 1 is used to connect to the external emergency power supply when the first-level cut-off protection unit 2 is connected, and collect and detect the voltage of the external emergency power supply; if the detected voltage matches the voltage of the low-voltage power grid of the vehicle, the power management module 1 controls the second-level 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; the low-voltage battery 5 is used to supply power to the low-voltage power grid of the vehicle after the power is supplemented to meet the battery SoC (State of Charge) i.e. the use domain value of the charge state; the door module 6 is used to drive the door lock to complete the unlocking action when it receives the door unlocking signal and the user passes the identity information authentication after it obtains the power from the low-voltage battery 5.

[0035] In this embodiment, an external power supply interface 4 is reserved. When the low-voltage battery 5 is seriously powered, the external emergency power supply is 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 low-voltage power grid of the whole vehicle, such as the voltage of the external emergency power supply is 48V, and the voltage required by the low-voltage power grid of the whole vehicle is 12V, the secondary cut-off protection unit 3 will remain disconnected at this time, and then the external emergency power supply cannot be connected to the low-voltage battery 5 for emergency jump-starting or power supply operation, which can protect the low-voltage power grid of the whole vehicle. Road; when it is detected that the voltage of the external emergency power supply 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 turned on, so that the low-voltage battery 5 is connected to the external emergency power supply for power replenishment operation, that is to say, the external emergency power supply in this embodiment is to perform emergency jump-starting or power replenishment operation on the low-voltage battery 5, and then the low-voltage battery 5 is used as the power supply to supply power to the low-voltage power grid of the whole vehicle. In the prior art, when the low-voltage battery 5 is seriously powered, it is generally used as the power supply to directly supply power to the low-voltage power grid of the whole vehicle or the door module through an external emergency power supply. When the low-voltage battery 5 is replenished to meet the use domain value of the battery SoC, the low-voltage battery 5 supplies power to the low-voltage power grid of the whole vehicle, so that the vehicle regains low-voltage power supply, restores the normal function of the vehicle's electrical system, and meets the use requirements of the whole vehicle. Then, after the door module 6 obtains power from the low-voltage battery 5, it can drive the door lock to complete the unlocking action only if it receives the door unlocking signal and the user passes the identity information authentication. Compared with the prior art in which the low-voltage battery 5 is fed with power, an external power supply is reserved through the corresponding door module 6, and the external power supply directly supplies power to the door module 6 to drive the door lock to unlock, which is not anti-theft, the vehicle body can be opened at will and it is easy to cause property loss, and the method of using a mechanical key, which has a poor sense of technology and is inconvenient to carry, this method in the embodiment of the present application is low-cost and high-safety, especially when the door is unlocked, the user needs to pass the identity information authentication before unlocking, and the door is opened under the premise of ensuring the convenience, reliability, and anti-theft safety of the vehicle's power-on operation, thereby realizing a low-cost, high-reliability, and compatible with a sense of technology design, so that customers can experience more comfort and safety. It should be noted that the door in this embodiment can be only the cockpit door, without including other doors, or all doors. There is no specific restriction in this embodiment, and it can be selected according to actual conditions.

[0036] Please continue to refer to Figure 1As shown, in the present embodiment, it should be noted that the power management module 1 is also used to monitor the charging voltage, charging current and battery SOC of the low-voltage battery 5; during the charging process, if the monitored battery SOC of the low-voltage battery 5 meets the usage threshold, the power management module 1 outputs a first-level cut-off signal to the first-level cut-off protection unit 2, and the first-level cut-off protection unit 2 receives the first-level cut-off signal and disconnects the circuit between the external charging interface 4 and the low-voltage battery 5.

[0037] When the external emergency power supply is replenishing the low-voltage battery 5, the power management module 1 monitors the replenishing voltage and current of the low-voltage battery 5 in real time to prevent overcurrent from causing line and controller failures. At the same time, it also monitors the replenishing time, and does not allow the low-voltage battery 5 to be replenished for a long time to avoid line overheating and spontaneous combustion. The power management module 1 also monitors the battery SOC of the low-voltage battery 5. When the battery SOC of the low-voltage battery 5 is replenished to meet the use threshold value (different capacity low-voltage 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 vehicle low-voltage power grid, and then the power management module 1 outputs a first-level cut-off signal to the first-level cut-off protection unit 2. The first-level cut-off protection unit 2 receives the first-level cut-off signal and disconnects the circuit between the external charging interface 4 and the low-voltage battery 5. At this time, the external emergency power supply and the low-voltage battery 5 are not connected, and the external emergency power supply cannot charge the low-voltage battery 5 through the external charging interface 4, thereby protecting the line of the vehicle low-voltage power grid and realizing circuit protection. Preferably, the external power supply interface 4 is electrically connected to the external emergency power supply through a power connection line. The external power supply interface 4 is configured to meet dust and water proof grade requirements and has current reverse protection.

[0038] In addition, the external emergency power supply in this embodiment can be used as a backup power supply for jump-starting / recharging when the vehicle is low on power. It has the same voltage as the vehicle's low-voltage battery 5. The low-voltage battery 5 currently used in the industry is generally 12V.

[0039] Please continue to refer to Figure 1 As shown, in the present embodiment, it is also necessary to explain that when the low-voltage battery 5 is recharged to meet the usage domain value of the battery SOC, the power management module 1 controls the switching of the low-voltage battery 5 to supply power to the low-voltage power grid of the entire vehicle, and at the same time outputs a secondary cut-off signal to the secondary cut-off protection unit 3. The secondary cut-off protection unit 3 receives the secondary cut-off signal and disconnects the loop between the low-voltage battery 5 and the primary cut-off protection unit 2.

[0040] After the battery SOC of the low-voltage battery 5 is replenished to meet the usage threshold, the external emergency power supply is not required to replenish the low-voltage battery 5 for a long time. The circuit between the external power replenishment interface 4 and the power management module 1 is disconnected through the first-level cut-off protection unit 2, and then the external emergency power supply cannot continue to replenish the low-voltage battery 5. At this time, the power management module 1 controls the switching of the low-voltage battery 5 to supply power to the low-voltage power grid of the entire vehicle, so that the vehicle electrical system can resume normal function. At the same time, the power management module 1 also outputs a second-level cut-off signal and controls the second-level cut-off protection unit 3 to further disconnect the circuit between the low-voltage battery 5 and the first-level cut-off protection unit 2. In this embodiment, the first-level cut-off protection unit 2 and the second-level cut-off protection unit 3 are used for joint control to achieve redundancy. In the event that the first-level cut-off protection unit 2 fails, the circuit between the low-voltage battery 5 and the first-level cut-off protection unit 2 can be further cut off through the second-level cut-off protection unit 3, so that the external emergency power supply cannot be connected, thereby achieving protection of the entire vehicle circuit.

[0041] Please continue to refer to Figure 1 As shown, in this embodiment, it should also be noted that the system also includes an identification module 7, which is communicatively connected to the power management module 1, and the identification module 7 is used to receive a user's request signal and send an authentication signal to the power management module 1 for authenticating the user.

[0042] In this embodiment, the request signal sent by the user is received through the identification module 7. The request signal can be used to determine whether the vehicle user intends to open the door, and determine whether to unlock the door accordingly to improve safety. Specifically, for a vehicle model that can use a remote control key to unlock the door, the request signal can be a key signal of the remote control key; for a vehicle model that can use a mobile terminal to unlock the door, the request signal can also be a distance signal between the vehicle user's mobile terminal and the vehicle; for a vehicle model that can use a fingerprint to unlock the door, the request signal can also be a fingerprint signal of the vehicle user; this embodiment is not limited to any one of them, and they are all within the protection scope of the embodiments of this application.

[0043] Of course, in this embodiment, the user's identity information is also authenticated to identify the car owner's information. The legal identity must be met before the car door can be unlocked. When the identification module 7 receives the user's request signal, it will also send an authentication signal to the power management module 1 to authenticate the user's identity. After receiving the authentication signal, the power management module 1 will authenticate the user's identity information. Only when the user's identity information passes the authentication, the power management module 1 will generate a door unlocking signal and send it to the door module 6. At this time, the door module 6 will receive the door unlocking signal again, and issue a door lock instruction to control the corresponding action. For example, when the door module 6 receives the door unlock signal and the user passes the identity authentication, it drives the door lock to complete the unlocking action, and then the user can enter the interior of the vehicle and further decide on the next action, such as releasing the handbrake, pushing the car, moving the car, towing the car, and unlocking the charging port cover, etc. For example, after the charging port cover is unlocked, the high-voltage battery can be quickly recharged by V2V (vehicle to vehicle) or charged by plugging in a mobile device. After the high-voltage battery is recharged to meet the usage domain value, the power management module 1 can also request to control the high-voltage battery to charge the low-voltage battery 5, realizing intelligent switching between high-voltage and low-voltage recharge. Of course, when the power of the high-voltage battery is lower than the usage domain value, such as 20%, the power management module 1 controls the output of the high-voltage battery to be turned off. At this time, the low-voltage battery 5 can only be charged through the external recharge interface 4.

[0044] In some embodiments, the user's identity authentication includes but is not limited to: facial image authentication and voice information authentication, wherein the facial image information can be obtained through an image sensor installed on the vehicle, such as a vehicle-mounted camera, and the voice information can be obtained through a vehicle-mounted microphone, that is, using image recognition and voiceprint recognition technology, through a camera and a microphone, respectively, to collect the user's facial image information and voice information, thereby extracting facial features of the facial image information and voiceprint features of the voice information, and matching the facial features and voiceprint features with pre-stored features to authenticate the user's identity. It should be noted that a variety of feature extraction methods can be used for extraction, as long as the relevant facial features and voiceprint features can be extracted, and this application does not limit which feature extraction method is used.

[0045] Please continue to refer to Figure 1 As shown, in this embodiment, it is also necessary to explain that the power management module 1 is connected to the first-level cut-off protection unit 2 through the first-level control circuit 8, and the first-level control circuit 8 is used to be electrically connected to the relay K1 in the first-level cut-off protection unit 2; one end of the first-level control circuit 8 is connected to the current input end of the control coil J1 of the relay K1, and the current output end of the control coil J1 of the relay K1 is grounded; the first-level control circuit 8 is used to energize the control coil J1 of the relay K1 so that the relay switch S1 of the relay K1 is disconnected. In this embodiment, the relay K1 is a normally closed relay.

[0046] The power management module 1 is connected to the secondary cut-off protection unit 3 through the secondary control circuit 9, and the secondary control circuit 9 is used to be electrically connected to the 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 control coil J2 of the relay K2, and the current output end of the control coil J2 of the relay K2 is grounded; the secondary control circuit 9 is used to energize the control coil J2 of the relay K2 so that the relay switch S2 of the relay K2 is closed. In this embodiment, the relay K2 is a normally open relay.

[0047] It should also be noted that the input end of the relay switch S1 is connected to the positive end of the external power supply interface 4, and the output end is respectively connected to the power management module 1 and the input end of the relay switch S2, the output end of the relay switch S2 is connected to the voltage input end of the low-voltage battery 5, and the voltage output end of the low-voltage battery 5 is connected to the negative end of the external power supply interface 4. Therefore, when the relay switch S1 and the relay switch S2 are both turned on, the external emergency power supply forms a power supply circuit through the external power supply interface 4 and the low-voltage battery 5.

[0048] When the low-voltage battery 5 needs to be jump-charged or supplemented, the external emergency power supply is connected to the external supplement interface 4 through a wire. Since the 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 and detect the voltage of the external emergency power supply at the same time. When the voltage of the external emergency power supply is detected to match the voltage of the low-voltage power grid of the whole vehicle, the power management module 1 controls the relay K2 in the secondary cut-off protection unit 3 to close 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 on the low-voltage battery 5. Jumping or replenishing power operation, of course, when it is detected that the voltage of the external emergency power supply does not match the voltage of the low-voltage power grid of the whole vehicle, the power management module 1 controls the relay K2 in the secondary cut-off protection unit 3 through the secondary control circuit 9 not to close; after the low-voltage battery 5 is replenished to the battery SOC meets the usage threshold, the power management module 1 controls the relay K1 in the primary cut-off protection unit 2 to disconnect through the primary control circuit 8. At this time, the external emergency power supply cannot be connected, which plays a role in protecting the low-voltage power grid circuit of the whole vehicle. At the same time, it controls the switching of the low-voltage battery 5 to supply power to the low-voltage power grid of the whole vehicle, and further controls the relay K2 in the secondary cut-off protection unit 3 to disconnect.

[0049] In some embodiments, the primary control circuit 8 includes a first switch tube Q1, a second switch tube Q2, a resistor R1 and a 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 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 control coil J1 of the relay K1 through the resistor R2. In one example, the first switch tube Q1 is a first triode, 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 connect to the power management module 1 to receive a circuit connection signal, the emitter of the first triode is used to connect to the base of the second triode, and the emitter of the second triode is connected to the current input end of the control coil J1 of the relay K1 through the resistor R2, wherein the first triode and the second triode are NPN type triodes. By adopting the setting of the above-mentioned primary control circuit 8, when the power management module 1 outputs the 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 circuit of the whole vehicle itself can be isolated.

[0050] In some embodiments, the secondary control circuit 9 includes a resistor R3, a third switch tube Q3 and a resistor R4; the second end of the third switch tube Q3 is connected to the power management module 1 through the resistor R3; the first end of the third switch tube Q3 is connected to the line between the output end of the relay switch S1 of the relay K1 and the input end of the relay switch S2 of the relay K2; the third end of the third switch tube Q3 is connected to the current input end of the control coil J2 of the relay K2 through the resistor R4. In one example, the third switch tube Q3 is a third triode, the base of the third triode is used to connect 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 relay switch S1 of the relay K1 and the input end of the relay switch S2 of the relay K2, and the emitter of the third triode is connected to the current input end of the control coil J2 of the relay K2 through the resistor R4, wherein the third triode is an NPN type triode. 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 circuit of the whole vehicle itself can be isolated.

[0051] In this embodiment, an unlocking control method is also provided. Figure 1 , Figure 2 As shown, the following steps are included:

[0052] S201, detecting the power of the low-voltage battery 5, when the power of the low-voltage battery 5 is detected to be lower than the usage threshold of the battery SoC, connecting an external emergency power supply through the external power supply interface 4;

[0053] In this embodiment, it should be noted that the power management module 1 detects the power level of the low-voltage battery 5 in real time. When the power level of the low-voltage battery 5 is detected to be lower than the battery SoC (State of Charge), that is, the usage domain value of the charge state, the external power supply interface 4 is connected to the external emergency power supply by using wires, and then the low-voltage battery 5 can be emergency-charged or powered up by the external emergency power supply.

[0054] S202, detecting the voltage of the external emergency power supply. When the voltage of the external emergency power supply is detected to match the voltage of the low-voltage power grid of the whole vehicle, outputting a secondary cut-off signal and controlling the secondary cut-off protection unit 3 to be turned on, so that the low-voltage battery 5 is connected to the external emergency power supply for power replenishment operation.

[0055] In this embodiment, it should be noted that when an external emergency power supply is used to perform emergency jump-starting or replenishing power to the low-voltage battery 5, the power management module 1 also detects the voltage of the external emergency power supply. When the voltage of the external emergency power supply is detected to be inconsistent with the voltage of the low-voltage power grid of the entire vehicle, the secondary cut-off protection unit 3 is not connected, that is, no loop is formed between the external emergency power supply and the low-voltage battery 5. When the voltage of the external emergency power supply is detected to be consistent with the voltage of the low-voltage power grid of the entire vehicle, the power management module 1 outputs a secondary cut-off signal and 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 replenishing power.

[0056] S203. During the charging process, the power management module 1 detects the battery SoC of the low-voltage battery 5; when it is detected that the low-voltage battery 5 is charged to meet the usage domain value of the battery SoC, a first-level cut-off signal is output and the first-level cut-off protection unit 2 is controlled to disconnect the circuit between the external charging interface 4 and the low-voltage battery 5.

[0057] In this embodiment, it should be noted that after the power replenishment starts, the power management module 1 detects the power replenishment voltage, power replenishment current and lithium battery SoC of the low-voltage battery 5 in real time, and starts the power replenishment timing. During the power replenishment process, it is determined in real time whether the power replenishment stop condition is met. When the battery SoC is detected to meet the use threshold value, the power management module 1 outputs a first-level cut-off signal and controls the first-level cut-off protection unit 2 to disconnect the circuit between the external power replenishment interface 4 and the low-voltage battery 5, so that the external emergency power supply cannot be connected to the vehicle circuit through the external power replenishment interface 4.

[0058] S204 , control the switching of the low-voltage battery 5 to supply power to the low-voltage power grid of the entire vehicle, and at the same time output a secondary cut-off signal and control the secondary cut-off protection unit 3 to disconnect the circuit between the low-voltage battery 5 and the primary cut-off protection unit 2 .

[0059] In this embodiment, it should be noted that when the low-voltage battery 5 is replenished to meet the usage domain value of the battery SoC, the first-level cut-off protection unit 2 will be disconnected first. At this time, the power management module 1 controls the switching of the low-voltage battery 5 to supply power to the low-voltage power grid of the entire vehicle, so that the vehicle electrical system can resume normal function. At the same time, it also outputs a second-level cut-off signal and controls the second-level cut-off protection unit 3 to further disconnect the loop between the low-voltage battery 5 and the first-level cut-off protection unit 2, so that the external emergency power supply cannot be connected to the entire vehicle circuit, thereby realizing protection of the entire vehicle circuit.

[0060] S205, receiving an authentication signal for authenticating the user's identity information, and performing authentication; if the user's identity information authentication is successful, generating a door unlocking signal, and controlling the door module 6 to drive the door lock to complete the unlocking action.

[0061] In this embodiment, it should be noted that when the external emergency power supply performs emergency jump-starting or replenishing power to the low-voltage battery 5 to meet the usage domain value of the battery SoC, the low-voltage battery 5 is stopped from being replenished, and the low-voltage battery 5 can supply power to the low-voltage power grid of the entire vehicle, and then the low-voltage power grid resumes its function. For example, the identification module 7 can identify the user's intention to open the door and receive the corresponding request signal when it is powered by the low-voltage battery 5. For a vehicle model that can use a remote control key to unlock the door, the request signal can be the key signal of the remote control key; for a vehicle model that can use a mobile terminal to unlock the door, the request signal is the distance signal between the user's mobile terminal and the vehicle; for a vehicle model that can use a fingerprint to unlock the door, the request signal can also be the fingerprint signal of the vehicle user; after receiving the user's request signal, the identification module 7 sends an authentication signal for user identity authentication to the power management module 1. By authenticating the user's identity information, it can ensure that the user is a legitimate user, thereby playing an anti-theft role.

[0062] The power management module 1 receives the authentication signal sent by the identification module 7, and authenticates the user's identity information, including but not limited to facial image authentication and voice information authentication. When the user passes the identity information authentication, the power management module 1 generates a door unlock signal and sends it to the door module 6. After receiving the door unlock signal, the door module 6 issues a door lock command to control the corresponding door to unlock. After the door is unlocked, the vehicle user can enter the vehicle and then further decide on the next action, such as releasing the handbrake, pushing the car, moving the car, towing the car, and unlocking the charging port cover, etc.

[0063] In this embodiment, a vehicle is also provided, comprising the above-mentioned unlocking control system.

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An unlocking control system, characterized in that: include: 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) which are respectively connected to the power management module (1) for communication; The external power supply interface (4) is used to connect an external emergency power supply when the vehicle is in a power-deficient state; The power management module (1) is used to connect to the external emergency power supply when the first-level cut-off protection unit (2) is turned on, and collect and detect the voltage of the external emergency power supply; If the detected voltage matches the low-voltage grid voltage of the vehicle, the power management module (1) controls the secondary cut-off protection unit (3) to be turned on, so that the low-voltage storage battery (5) is connected to the external emergency power supply to perform a power replenishment operation; The low-voltage battery (5) is used to supply power to the low-voltage power grid of the entire vehicle; The door module (6) is used to drive the door lock to complete the unlocking action when it receives the door unlocking signal and the user passes the identity information authentication after it is powered by the low-voltage battery (5).

2. The unlocking control system according to claim 1, characterized in that: The power management module (1) monitors the charging voltage, charging current and battery SOC of the low-voltage battery (5); During the power replenishment process, if the battery SOC of the monitored low-voltage storage battery (5) meets the usage threshold, the power management module (1) outputs a first-level cut-off signal and controls the first-level cut-off protection unit (2) to disconnect the circuit between the external power replenishment interface (4) and the low-voltage storage battery (5).

3. The unlocking control system according to claim 2, characterized in that: The power management module (1) controls the switching of the low-voltage storage battery (5) to supply power to the low-voltage power grid of the entire vehicle, and simultaneously outputs a secondary cut-off signal and controls the secondary cut-off protection unit (3) to disconnect the circuit between the low-voltage storage battery (5) and the primary cut-off protection unit (2).

4. The unlocking control system according to claim 1, characterized in that: The system further comprises an identification module (7), wherein the identification module (7) is communicatively connected to the power management module (1); The identification module (7) is used to receive a user's request signal and send an authentication signal for authenticating the user's identity to the power management module (1).

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

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

7. The unlocking control system according to claim 5, characterized in that: The power management module (1) is connected to the secondary cut-off protection unit (3) via a secondary control circuit (9), and the secondary control circuit (9) is used to be electrically connected to a 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 control coil J2 of the relay K2, and the current output end of the control coil J2 of the relay K2 is grounded; the relay K2 is a normally open relay.

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

9. An unlocking control method, characterized in that: The method is performed using the unlocking control system according to any one of claims 1 to 8, and comprises the following steps: Detecting the power level of the low-voltage battery (5), and when it is detected that the power level of the low-voltage battery (5) is lower than the usage threshold of the battery SoC, connecting an external emergency power supply via an external power supply interface (4); Detecting the voltage of the external emergency power supply, 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 entire vehicle, outputting a secondary cut-off signal and controlling the secondary cut-off protection unit (3) to be turned on, so that the low-voltage storage battery (5) is connected to the external emergency power supply to perform a power replenishment operation; An authentication signal for authenticating the user's identity information is received and the authentication is performed; if the user's identity information is authenticated, a door unlocking signal is generated and the door module (6) is controlled to drive the door lock to complete the unlocking action.

10. The unlocking control method according to claim 9, characterized in that: Before receiving the authentication signal for authenticating the identity information of the user and performing the authentication, the method further includes: During the power replenishment process, the power management module (1) detects the battery SoC of the low-voltage battery (5); When it is detected that the low-voltage storage battery (5) is charged to a usage threshold value that satisfies the battery SOC, a first-level cut-off signal is output and a first-level cut-off protection unit (2) is controlled to disconnect the circuit between the external charging interface (4) and the low-voltage storage battery (5).

11. The unlocking control method according to claim 10, characterized in that: Before receiving the authentication signal for authenticating the identity information of the user and performing the authentication, the method further includes: The low-voltage storage battery (5) is controlled to switch to supply power to the low-voltage power grid of the entire vehicle, and a secondary cut-off signal is outputted and a secondary cut-off protection unit (3) is controlled to disconnect the circuit between the low-voltage storage battery (5) and the primary cut-off protection unit (2).

12. The unlocking control method according to claim 9, characterized in that: The receiving of an authentication signal for authenticating the identity information of a user and performing authentication; if the identity information of the user is authenticated, generating a door unlocking signal and controlling the door module (6) to drive the door lock to complete the unlocking action, comprises: The identification module (7) receives a request signal from the user and sends an authentication signal for authenticating the user to the power management module (1); The power management module (1) receives the authentication signal sent by the identification module (7) and authenticates the identity information of the user; When the identity information is authenticated, the power management module (1) generates a door unlocking signal and sends it to the door module (6); The door module (6) receives the door unlocking signal and issues a door lock instruction to drive the door lock to complete the unlocking action.

13. A vehicle, characterized in that: Comprising an unlocking control system as described in any one of claims 1-8.

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