Controller capable of safely unlocking vehicle in emergency
By designing a controller that incorporates an emergency power supply legitimacy check circuit and grid isolation technology, the safety and convenience issues of the new vehicle model in the event of battery failure were resolved, enabling safe unlocking in emergency situations.
Patent Information
- Application Number
- CN202520800913.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-25
AI Technical Summary
Existing vehicle emergency unlocking solutions suffer from problems such as complex operation, low security, and lack of identity verification. In particular, when the vehicle battery fails or is depleted, newer models that have eliminated the traditional mechanical key cannot be unlocked securely.
A controller was designed, comprising a battery power supply interface, an emergency power supply interface, a power management circuit, an authentication module, and an MCU. Through an emergency power supply legitimacy check circuit and grid isolation technology, the secure access of the external emergency power supply is ensured, and combined with smart key authentication, secure unlocking is achieved.
It provides a simple, easy-to-operate, and highly secure emergency unlocking solution. Through standardized interfaces and multiple security mechanisms, it ensures the safety and convenience of unlocking vehicles in emergency situations.
Smart Images
Figure CN223949118U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of automobile electronic control technology, especially relates to a controller which can safely unlock vehicle under emergency. BACKGROUND
[0002] With the development of automobile intelligence, the traditional mechanical key is gradually replaced by the intelligent key (such as Bluetooth key, NFC key, face recognition, etc.), but the intelligent key function is highly dependent on the vehicle battery power supply, once the vehicle battery fails or runs out of power, the user will not be able to unlock the vehicle. The conventional solution is to use a mechanical key to unlock the vehicle in an emergency, but currently, mechanical keys have been removed from some new vehicle models (such as Tesla Model X, Model 3, Changan Deep Blue S05, Xiaomi SU7, Lingke 08, etc.), and new vehicle models use two typical emergency unlocking solutions: hidden pull line solution: for example, Tesla Model X, the hidden pull line solution opens the front hatch by pulling the hidden pull line on the front bumper, and the battery is powered to restore the intelligent key function, but the hidden pull line solution lacks an identity verification mechanism, and anyone can open the front hatch without authorization, which poses a risk of theft of property; The power cable solution: for example, Changan Deep Blue S05, the power cable solution restores the intelligent key function by operating the power cable on the battery hidden in the rear bumper cover, but the power cable solution requires the user to operate the exposed cable, which is complex and poses a risk of electrical short circuit due to user error in connecting the positive and negative terminals or connecting the wrong voltage; These solutions have common problems of insufficient safety, complex operation, and non-standard interfaces, making it difficult to balance convenience and safety. SUMMARY
[0003] The utility model aims at solving the problems of complex operation, low safety and lack of identity verification in existing vehicle emergency unlocking, and provides a controller which can safely unlock vehicle under emergency.
[0004] The technical scheme provided by the utility model is as follows:
[0005] A controller which can safely unlock vehicle under emergency, comprising:
[0006] A battery power supply interface connected with the vehicle body battery;
[0007] An emergency power supply interface connected with an external emergency power supply;
[0008] A battery power supply management circuit, one end of which is connected with the battery power supply interface, and the other end of which is connected with a vehicle body door lock driving module, a vehicle body identity authentication module and other unlocking related modules;
[0009] An external emergency power supply management circuit, one end of which is connected with the emergency power supply interface, and the other end of which is connected with the vehicle body door lock driving module, the vehicle body identity authentication module and the vehicle body other unlocking related modules;
[0010] An emergency power supply legitimacy inspection circuit, which is arranged between the emergency power supply interface and the external emergency power supply management circuit;
[0011] An MCU, which receives a monitoring signal and sends a control signal to control the on-off state of the battery power supply management circuit and the external emergency power supply management circuit;
[0012] The emergency power supply legitimacy inspection circuit outputs a power supply, which, after passing through an internal voltage stabilizing circuit, forms a stabilized power supply, and the stabilized power supply is used to supply power to the MCU.
[0013] Preferably, the battery power supply management circuit comprises a battery power supply circuit, an input voltage monitoring circuit and a battery off state monitoring circuit.
[0014] Preferably, the external emergency power supply management circuit comprises an external emergency power supply circuit and an output voltage monitoring circuit.
[0015] Preferably, the emergency power supply legitimacy inspection circuit comprises:
[0016] An emergency power supply power supply switch;
[0017] A first diode, the positive electrode of which is connected with the external emergency power supply and the emergency power supply power supply switch;
[0018] A first triode, the emitter of which is connected with the negative electrode of the first diode, and the base thereof is connected with the negative electrode of the first diode through a first resistor;
[0019] A second triode, the emitter of which is connected with the negative electrode of the first diode, and the collector thereof is connected with a coil and grounded;
[0020] A second diode, the negative electrode of which is connected with the collector of the second triode, and the positive electrode thereof is grounded;
[0021] A first capacitor, which is connected with the first triode in parallel to realize a filtering function;
[0022] The collector of the first triode is connected with the base of the second triode through a second resistor; a third resistor, a fifth resistor and a first voltage stabilizing diode are connected in series to form a first voltage dividing circuit, one end of which is connected with the base of the first triode, and the other end thereof is grounded; a fourth resistor and a sixth resistor are connected in series to form a second voltage dividing circuit, one end of which is connected with the collector of the first triode, and the other end thereof is grounded.
[0023] Preferably, the battery power supply circuit comprises:
[0024] a first MOSFET switch and a second MOSFET switch, the drain of the first MOSFET switch is connected with the drain of the second MOSFET switch, the source of the first MOSFET switch is connected with the battery power supply interface, and the source of the second MOSFET switch is connected with the vehicle body door lock driving module, the vehicle body identity authentication module or the other unlocking related module of the vehicle body;
[0025] a second voltage stabilizing diode connected in parallel with the first MOSFET switch;
[0026] a third voltage stabilizing diode connected in parallel with the second MOSFET switch;
[0027] a seventh resistor, one end of which is grounded, and the other end of which is connected with the common node of the anode of the second voltage stabilizing diode, the gate of the first MOSFET switch, the anode of the third voltage stabilizing diode and the gate of the second MOSFET switch, forming a ground path.
[0028] Preferably, the input voltage monitoring circuit comprises an eighth resistor, a ninth resistor and a second capacitor, wherein the eighth resistor and the ninth resistor are connected in series to form a third voltage dividing circuit, and the second capacitor is connected in parallel with the ninth resistor to realize a filtering function.
[0029] Preferably, the external emergency power supply circuit has the same structure as the battery power supply circuit, and the input voltage monitoring circuit, the battery shutdown state monitoring circuit and the output voltage monitoring circuit have the same structure.
[0030] Preferably, the monitoring signals received by the MCU include an input voltage monitoring signal, a battery power supply shutdown monitoring signal and an output voltage monitoring signal, and the control signals sent by the MCU include an emergency power supply output control signal and a battery power supply switch control signal.
[0031] Preferably, the emergency power supply interface is a standardized interface, and the emergency power supply interface is arranged at any position outside the vehicle body.
[0032] The controller provided by the utility model can safely unlock the vehicle in an emergency, has simple structure, prevents electrical faults through voltage verification and power grid isolation technology, has a standardized emergency interface to improve user operation convenience, and ensures the safety of the unlocking process in combination with an intelligent key identity verification mechanism. BRIEF DESCRIPTION OF DRAWINGS
[0033] Figure 1The controller of the utility model can safely unlock the vehicle in emergency.
[0034] Figure 2 The controller of the utility model can safely unlock the vehicle in emergency.
[0035] Figure 3 The emergency power supply legality checking circuit schematic diagram of the utility model.
[0036] Figure 4 The accumulator power supply management circuit schematic diagram of the utility model.
[0037] Figure 5 The accumulator power supply management circuit schematic diagram of the utility model.
[0038] Figure 6 The external emergency power supply power supply management circuit schematic diagram of the utility model.
[0039] Figure 7 The external emergency power supply power supply management circuit schematic diagram of the utility model.
[0040] Figure 8 The internal voltage stabilizing circuit schematic diagram of the utility model.
[0041] Figure 9 The controller of the utility model can safely unlock the vehicle in emergency.
[0042] Figure 10 The controller of the utility model can safely unlock the vehicle in emergency. DETAILED DESCRIPTION
[0043] The utility model will be further explained in detail in combination with the drawings, so that the person skilled in the art can implement according to the description.
[0044] As Figures 1-2As shown, the utility model provides a kind of controller that can be safely unlocked vehicle in emergency, it includes: controller 100 shell, it is arranged in vehicle body interior, the controller 100 shell includes: upper casing 111, its material uses PA66-GF30+H65;Metal lower casing 112, its material uses ADC12;Wherein, the upper casing 111 and the metal lower casing 112 are sealed by sealing glue 150, are fixedly connected using M2.5 carbon steel screw 113, constitute the controller 100 shell;Storage battery power supply interface 130, it is connected with vehicle body storage battery 300;The storage battery power supply interface 130 is connected with the shell;Emergency power supply interface 140, it is connected with external emergency power supply 400;The emergency power supply interface 140 is standardized interface, and USB-C is used in this embodiment;The emergency power supply interface 140 supports multiple standard protocols, and user can use portable power bank, mobile emergency power supply and the like equipment as the external emergency power supply 400;The emergency power supply interface 140 is arranged at any position outside vehicle body according to the appearance design of whole vehicle factory, ensure that user is operated conveniently;The emergency power supply interface 140 is connected with the shell;PCB board 120, it is arranged between the upper casing 111 and the metal lower casing 112;The PCB board 120 includes: storage battery power supply management circuit, one end is connected with the storage battery power supply interface 130, and the other end is connected with vehicle body door lock driving module, vehicle body identity authentication module and other unlocking related module of vehicle body;The storage battery power supply management circuit includes: storage battery power supply circuit, input voltage monitoring circuit and storage battery off state monitoring circuit;Emergency power supply legitimacy inspection circuit, one end is connected with the emergency power supply interface 140, is used to detect the voltage and the like parameters of the external emergency power supply 400, carries out safety verification to the voltage and the like parameters of the external emergency power supply 400, ensures that voltage and the like parameters are safe and compliant before being connected into vehicle body, avoids electrical fault;The emergency power supply legitimacy inspection circuit can be adapted to emergency power supply of different voltage, for example 9V-24V emergency power supply by dynamic threshold adjustment technology;External emergency power supply management circuit, one end is connected with the emergency power supply legitimacy inspection circuit output power supply, and the other end is connected with the vehicle body door lock driving module, the vehicle body identity authentication module and other unlocking related module of vehicle body;The external emergency power supply management circuit includes: external emergency power supply circuit and output voltage monitoring circuit;MCU, it receives monitoring signal and sends control signal, controls the break state of the storage battery power supply management circuit and the external emergency power supply management circuit;The MCU is used to isolate the low voltage network of the external emergency power supply 400 and the vehicle body storage battery 300, makes the vehicle body storage battery 300 or the external emergency power supply 400 independently power supply for intelligent key related controller 200;The MCU is further configured to, after the MCU detects that the vehicle body storage battery 300 fails or is in power shortage and the emergency power legitimacy check circuit passes the verification, control the power supply of the smart key related controller 200 to be switched from the vehicle body storage battery 300 to the external emergency power supply 400.
[0045] The controller provided by the utility model can safely unlock the vehicle in emergency.
[0046] When the vehicle body storage battery 300 has sufficient power, the storage battery power supply management circuit connects the vehicle body storage battery 300, so that the vehicle body storage battery 300 independently supplies power to the smart key related controller 200.
[0047] When the vehicle body battery 300 fails or is out of power, the intelligent key function is disabled. After the user successfully connects the external emergency power supply 400 with the emergency power supply power supply interface 140, the emergency power supply legality checking circuit detects the voltage and other parameters of the external emergency power supply 400 and performs safety verification. After the external emergency power supply 400 passes the safety verification, the MCU determines whether the vehicle body battery 300 stops supplying power by receiving the battery power supply shutdown monitoring signal. If the vehicle body battery 300 stops supplying power, the MCU sends the emergency power supply output control signal to the external emergency power supply power supply management circuit and sends the battery power supply switch control signal to the battery power supply management circuit, so that the external emergency power supply 400 supplies power while ensuring that the vehicle body battery 300 does not supply power, thereby isolating the external emergency power supply 400 from the low-voltage network of the vehicle body battery 300 and ensuring that the external emergency power supply 400 supplies power to the intelligent key related controller 200 alone. When the MCU switches the power supply of the intelligent key related controller 200 to the external power supply, the intelligent key function is restored. The user still needs to perform identity verification through the intelligent key to unlock the vehicle, thereby ensuring safety.
[0048] As a preferred, an LED indicator lamp is arranged at the emergency power supply power supply interface 140, which is connected with the emergency power supply legality checking circuit. If the verification of the external emergency power supply 400 by the emergency power supply legality checking circuit is passed, the LED indicator lamp displays green. If the verification of the external emergency power supply 400 by the emergency power supply legality checking circuit is not passed, the LED indicator lamp displays red. Alternatively, the operation state is pushed through the vehicle-mounted central control screen or a mobile phone APP.
[0049] As Figure 3As shown, the emergency power supply legality check circuit includes: an emergency power supply switch K701; a first diode D701, whose anode is connected to the external emergency power supply 400 and the emergency power supply switch K701; a first transistor Q701, whose emitter is connected to the cathode of the first diode D701, and whose base is connected to the cathode of the first diode D701 through a first resistor R701; a second transistor Q702, whose emitter is connected to the cathode of the first diode D701, and whose collector is connected to the coil and grounded; and a second diode D702, whose cathode is connected to the collector of the second transistor Q702. The electrodes are connected, with the positive terminal grounded. The first capacitor C701 is connected in parallel with the first transistor Q701 to achieve the filtering function. The collector of the first transistor Q701 is connected to the base of the second transistor Q702 through the second resistor R702. The third resistor R703, the fifth resistor R705, and the first Zener diode D703 are connected in series to form the first voltage divider circuit, with one end connected to the base of the first transistor Q701 and the other end grounded. The fourth resistor R704 and the sixth resistor R706 are connected in series to form the second voltage divider circuit, with one end connected to the collector of the first transistor Q701 and the other end grounded.
[0050] like Figures 4-5 As shown, the battery power supply circuit includes: a first MOSFET switch Q501 and a second MOSFET switch Q502; the drain of the first MOSFET switch Q501 and the drain of the second MOSFET switch Q502 are connected back-to-back in series to achieve simultaneous opening and closing; the source of the first MOSFET switch Q501 is connected to the battery power supply interface 130, and the source of the second MOSFET switch Q502 is connected to the vehicle door lock drive module, the vehicle identity authentication module, or other vehicle unlocking related modules; a second Zener diode D501, which is connected in parallel with the first MOSFET switch Q501; a third Zener diode D502, which is connected in parallel with the second MOSFET switch Q502; and a seventh resistor R515, one end of which is grounded, and the other end is connected to the common node of the anode of the second Zener diode D501, the gate of the first MOSFET switch Q501, the anode of the third Zener diode D502, and the gate of the second MOSFET switch Q502, forming a grounding path.
[0051] The input voltage monitoring circuit includes: an eighth resistor R513, a ninth resistor R514, and a second capacitor C507; wherein, the eighth resistor R513 and the ninth resistor R514 are connected in series to form a third voltage divider circuit; the second capacitor C507 is connected in parallel with the ninth resistor R514 to achieve the filtering function.
[0052] The input voltage monitoring circuit and the battery shutdown state monitoring circuit have the same structure, but the input voltage monitoring circuit is connected to the source of the first MOSFET switch Q501, and the battery shutdown state monitoring circuit is connected between the drain of the first MOSFET switch Q501 and the drain of the second MOSFET switch Q502.
[0053] The battery power supply management circuit includes three battery power supply circuits, three input voltage monitoring circuits and three battery shutdown state monitoring circuits, wherein the three battery power supply circuits correspond to the power supply of the vehicle body door lock driving module, the vehicle body identity authentication module or the other unlocking related modules in the smart key related controller 200 respectively; each battery power supply circuit is connected with an input voltage monitoring circuit and a battery shutdown state monitoring circuit, and receives the battery power supply switch control signal transmitted by the MCU, so as to turn on and off the battery power supply circuit; each input voltage monitoring circuit outputs an input voltage monitoring signal and transmits it to the MCU; each battery shutdown state monitoring circuit outputs a battery power supply shutdown monitoring signal and transmits it to the MCU.
[0054] As shown in Figures 6-7 The external emergency power supply 400 power supply circuit has the same structure as the battery power supply circuit; the input voltage monitoring circuit, the battery shutdown state monitoring circuit and the output voltage monitoring circuit have the same structure; and the output voltage monitoring circuit is connected to the source of the second MOSFET switch Q818.
[0055] The external emergency power supply management circuit includes three external emergency power supply circuits and three output voltage monitoring circuits, wherein the three external emergency power supply circuits correspond to the power supply of the vehicle body door lock driving module, the vehicle body identity authentication module or the other unlocking related modules in the smart key related controller 200 respectively; each external emergency power supply circuit is connected with an output voltage monitoring circuit, and receives the emergency power supply output control signal transmitted by the MCU, so as to turn on and off the external emergency power supply circuit; each output voltage monitoring circuit outputs an output voltage monitoring signal and transmits it to the MCU.
[0056] As shown in Figure 8As shown, the internal voltage stabilizing circuit comprises: a chip U201, the VCC pin of which is connected with the emergency power supply legality checking circuit output power supply, the VOUT pin outputs a stabilized power supply for powering the MCU; a tenth resistor R201 and an eleventh resistor R202 are connected in series to form a fourth voltage dividing circuit, and are connected with the VCC pin and the CTL pin of the chip U201, and the other end is grounded; a third capacitor C201 and a fourth capacitor C202 are connected in parallel at the input end of the chip U201 to realize input filtering, and a fifth capacitor C203 and a sixth capacitor C204 are connected in parallel at the output end of the chip U201 to realize output filtering.
[0057] As shown in the Figure 9 As shown, when the vehicle body storage battery 300 has sufficient power, the storage battery power supply management circuit in the controller 100 connects the vehicle body storage battery 300, so that the vehicle body storage battery 300 powers the intelligent key related controller 200 alone.
[0058] As shown in the Figure 10 As shown, when the vehicle body storage battery 300 fails or is out of power, the external emergency power supply power supply management circuit in the controller 100 connects the vehicle body storage battery 300, so that the external emergency power supply 400 powers the intelligent key related controller 200 alone.
[0059] The controller provided by the utility model can safely unlock the vehicle in emergency, the voltage is verified through the setting of the emergency power supply legality checking circuit, and the vehicle body is connected only after safety compliance is ensured, the safety connection of the external emergency power supply is ensured, and electrical failure is prevented; the MCU controls the storage battery power supply and the external emergency power supply power supply switching, the storage battery or the external emergency power supply powers the intelligent key related controller alone, the external emergency power supply and the vehicle body low-voltage network form power grid isolation, and the safety of the vehicle body power grid is ensured; a standardized emergency power supply interface is arranged outside the vehicle body, and the user only needs to insert the emergency power supply to restore the intelligent key function, and the user operation convenience is improved; even if the intelligent key function is restored through the emergency power supply, the user still needs to verify the identity through the intelligent key, and the safety of the automobile unlocking process is ensured; the controller provided by the utility model can safely unlock the vehicle in emergency through the standardized interface, intelligent power management and multiple safety mechanisms, the unlocking safety and operation convenience of the vehicle in emergency are significantly improved, and the controller is suitable for the wide application scenarios of future intelligent networked vehicles.
[0060] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein.
Claims
1. A controller that can safely unlock a vehicle in an emergency, characterized by, The application relates to a vehicle body unlocking system, which comprises the following parts: a storage battery power supply interface connected with a vehicle body storage battery; an emergency power supply interface connected with an external emergency power supply; a storage battery power supply management circuit connected at one end with the storage battery power supply interface and at the other end with a vehicle body door lock driving module, a vehicle body identity authentication module and other vehicle body unlocking related modules; an external emergency power supply management circuit connected at one end with the emergency power supply interface and at the other end with the vehicle body door lock driving module, the vehicle body identity authentication module and other vehicle body unlocking related modules; an emergency power supply legitimacy inspection circuit arranged between the emergency power supply interface and the external emergency power supply management circuit; an MCU which receives a monitoring signal and sends a control signal to control the opening and closing states of the storage battery power supply management circuit and the external emergency power supply management circuit; wherein the emergency power supply legitimacy inspection circuit outputs a power supply which, after passing through an internal voltage stabilizing circuit, forms a stabilized power supply which supplies power to the MCU.
2. The controller for safe unlocking of a vehicle in an emergency according to claim 1, characterized by, The storage battery power supply management circuit comprises a storage battery power supply circuit, an input voltage monitoring circuit and a storage battery closing state monitoring circuit.
3. The controller for safe unlocking of a vehicle in an emergency situation according to claim 2, characterized in that, The external emergency power supply management circuit comprises an external emergency power supply circuit and an output voltage monitoring circuit.
4. The controller for safe unlocking of a vehicle in an emergency according to claim 1, characterized by, The emergency power supply legitimacy inspection circuit comprises: an emergency power supply switch; a first diode with a positive electrode connected with the external emergency power supply and the emergency power supply switch; a first triode with an emitter connected with a negative electrode of the first diode and a base connected with the negative electrode of the first diode through a first resistor; a second triode with an emitter connected with the negative electrode of the first diode and a collector connected with a coil and grounded; a second diode with a negative electrode connected with the collector of the second triode and a positive electrode grounded; a first capacitor connected in parallel with the first triode to realize a filtering function; wherein the collector of the first triode is connected with the base of the second triode through a second resistor; a third resistor, a fifth resistor and a first voltage stabilizing diode are connected in series to form a first voltage dividing circuit, one end of which is connected with the base of the first triode and the other end of which is grounded; a fourth resistor and a sixth resistor are connected in series to form a second voltage dividing circuit, one end of which is connected with the collector of the first triode and the other end of which is grounded.
5. The controller for safe unlocking of a vehicle in an emergency situation according to claim 2, characterized in that, The storage battery power supply circuit comprises: a first MOSFET switch and a second MOSFET switch; the drain of the first MOSFET switch is connected with the drain of the second MOSFET switch, the source of the first MOSFET switch is connected with the storage battery power supply interface, and the source of the second MOSFET switch is connected with the vehicle body door lock driving module, the vehicle body identity authentication module or other vehicle body unlocking related modules; a second voltage stabilizing diode connected in parallel with the first MOSFET switch; a third voltage stabilizing diode connected in parallel with the second MOSFET switch; The seventh resistor has one end grounded and the other end connected with a common node of the positive electrode of the second voltage stabilizing diode, the gate of the first MOSFET switch, the positive electrode of the third voltage stabilizing diode and the gate of the second MOSFET switch, forming a ground path.
6. The controller for safe unlocking of a vehicle in an emergency situation according to claim 2, characterized in that, The input voltage monitoring circuit comprises an eighth resistor, a ninth resistor and a second capacitor; the eighth resistor and the ninth resistor are connected in series to form a third voltage dividing circuit; and the second capacitor is connected in parallel with the ninth resistor to realize a filtering function.
7. The controller for safe unlocking of a vehicle in an emergency situation according to claim 3, characterized in that, The external emergency power supply circuit has the same structure as the storage battery power supply circuit; the input voltage monitoring circuit, the storage battery off state monitoring circuit and the output voltage monitoring circuit have the same structure.
8. The controller for safe emergency unlocking of a vehicle according to claim 1, wherein The monitoring signals received by the MCU include input voltage monitoring signals, storage battery power supply off monitoring signals and output voltage monitoring signals; and the control signals sent by the MCU include emergency power supply output control signals and storage battery power supply switch control signals.
9. The controller for safe emergency unlocking of a vehicle according to claim 1, wherein The emergency power supply interface is a standardized interface, and the emergency power supply interface is arranged at any position outside the vehicle body.