Dual-mode emergency relay and use method and control method thereof

Abstract

The invention provides a dual-mode emergency relay and a using method and a control method thereof, and belongs to the technical field of automobile safety. The dual-mode emergency relay comprises a coil, one end of the coil is electrically connected with a control signal input pin, and the other end of the coil is electrically connected with a power supply cathode pin; the coil is used for driving the movable contact pin to be switched between the normally closed contact pin and the normally open contact pin; the anode of the silicon controlled rectifier is electrically connected with the movable contact pin, and the cathode of the silicon controlled rectifier is electrically connected with the control signal input pin; one pin of the universal collision sensor is connected with the control electrode of the silicon controlled rectifier, and the other pin of the universal collision sensor is connected with the anode of the silicon controlled rectifier; the coil, the silicon controlled rectifier, the universal collision sensor, the movable contact pin, the normally closed contact pin and the normally open contact pin are all arranged in the relay shell; and the metal lead-out pins are embedded on the base of the relay shell.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive safety, and particularly to a dual-mode emergency relay, its usage method, and control method. Background Art

[0002] Existing relays are generally used to execute the on-off of large load currents or the signal conversion between normally open and normally closed states. Since they are passive execution devices, they do not have the function of self-detecting and responding with self-locking. The realization of their functions depends on the continuous input of external signals. When a vehicle encounters a collision, the driver's panic, disability, shock, or the damage of the external control signal line, or the power-off of the central controller's instruction or the interruption of the driver's dereliction of duty and incapacity all result in the relay being unable to respond and work; for example, the door locking mechanism cannot be unlocked, the hidden handle cannot be ejected, the windows and skylights lose the emergency opening function, the double-flash warning light fails, the child lock remains locked, the high-voltage electrical system fails to cut off the power in time, the fuel supply continues to supply fuel for combustion, etc. The abnormality of the above functions will seriously hinder the escape of passengers and external rescue.

[0003] As the number of cars increases, traffic accidents are inevitable. At present, the relay switches lack the function of autonomous response to accidents and cannot provide power supply, status information, decision-making services, and technical support for systems and devices (such as emergency escape devices, accident emergency response systems, anti-rear-end flashing lights, automatic doors, electronic window breakers, GPS alarm and help positioning, as well as monitoring intervention and services for disaster prevention, mitigation, emergency handling, and rapid response).

[0004] Although the utility model patent with the application number CN201420847522.0 discloses an impact-responsive relay that can be autonomously triggered and conducted during a collision, it only plays a role in accident scenarios. Due to the extremely low accident probability, its daily usage rate is almost zero. Even during the entire life cycle of the vehicle, the relay has never been triggered and applied, occupying the circuit board space in vain and increasing additional costs; in addition, because the internal circuit of the relay is designed to exclude external control signals, it cannot be directly compatible and interchangeable with conventional relays. If the original vehicle relay is replaced with the patented product, it cannot respond to conventional control signal instructions, resulting in the failure of actual application. In addition, for early operating vehicles, adapting the patented relay requires modifying the original vehicle's circuit layout, which not only introduces unpredictable risks (such as the decline of circuit stability and reliability, and the rejection of insurance claims), but also the upgrade process is cumbersome and inefficient, seriously restricting its promotion and application. Summary of the Invention

[0005] In view of the above problems, an embodiment of the present invention provides a dual-mode emergency relay, and the dual-mode emergency relay includes: a coil, one end of the coil is electrically connected to a control signal input pin, and the other end is electrically connected to a power supply negative pin, and the coil is used to drive a moving contact pin to switch between a normally closed contact pin and a normally open contact pin;

[0006] A thyristor, an anode of the thyristor is electrically connected to the moving contact pin, and a cathode of the thyristor is electrically connected to the control signal input pin;

[0007] A universal collision sensor, one pin of the universal collision sensor is connected to a control electrode of the thyristor, and the other pin of the universal collision sensor is connected to the anode of the thyristor;

[0008] A relay housing, the coil, the thyristor, the universal collision sensor, the moving contact pin, the normally closed contact pin and the normally open contact pin are all arranged in the relay housing;

[0009] A metal lead-out pin, and the metal lead-out pin is embedded in a base of the relay housing.

[0010] In one implementation, the thyristor adopts a unidirectional thyristor structure.

[0011] In one implementation, the number of metal lead-out pins on the base of the relay housing is 4 or 5.

[0012] According to another aspect of the embodiments of the present disclosure, a method for using a dual-mode emergency relay is provided, and the method for using is applied to a dual-mode emergency relay as described in the above aspect, and the method for using includes:

[0013] Directly replace the same type of standard relay on the original vehicle circuit board with the dual-mode emergency relay, wherein the layout, size and electrical function definition of the metal lead-out pins of the dual-mode emergency relay are the same as those of the standard relay;

[0014] Under normal working conditions, drive the coil by applying an external control signal to the control signal input pin to control the switching of the moving contact pin between the normally closed contact pin and the normally open contact pin;

[0015] When a vehicle collision occurs, sense the collision acceleration through the universal collision sensor and trigger the thyristor to conduct, so that the current flows through the moving contact pin, the anode and the cathode of the thyristor to the control signal input pin and through the coil, thereby driving the moving contact pin to switch and realizing the emergency function, even if there is no effective external control signal applied to the control signal input pin at this time.

[0016] In one implementation, the direct replacement of the same type of standard relay on the original vehicle circuit board with the dual-mode emergency relay means physically inserting the dual-mode emergency relay into the socket of the original vehicle relay to achieve electrical connection and function inheritance.

[0017] In one implementation, the emergency function includes at least one of the following: door unlocking, emergency opening of windows or sunroofs, activation of hazard warning lights, unlocking of child locks, power-off of the high-voltage electrical system, fuel cut-off, and operation of the electronic control emergency system.

[0018] According to another aspect of the embodiments of the present disclosure, a control method for a dual-mode emergency relay is provided. The control method is applied to a dual-mode emergency relay as described in the above aspect, and the control method includes:

[0019] Sense a collision event occurring in the vehicle through the omnidirectional collision sensor to generate a trigger signal;

[0020] Apply the trigger signal to the control electrode of the thyristor to turn on the thyristor;

[0021] The current flows from the moving contact pin connected to the power supply, through the anode and cathode of the turned-on thyristor, and further through the coil to the negative power supply pin;

[0022] The current flowing through the coil generates a magnetic field, driving the moving contact pin to switch from the contact state with the normally closed contact pin to the contact state with the normally open contact pin, or from the contact state with the normally open contact pin to the contact state with the normally closed contact pin, thereby realizing the emergency function;

[0023] Wherein, after being triggered and turned on, the thyristor maintains a self-locked conduction state to maintain the energization of the coil and the contact switching state until the power supply is cut off.

[0024] One or more of the above technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

[0025] In a dual-mode emergency relay provided by an embodiment of the present invention, the dual-mode emergency relay is fully compatible with a conventional relay and can be directly replaced or directly interchanged. When interchanged and under normal working conditions, its coil is still controlled by an external signal through a control signal input pin, and it is compatible with the original vehicle circuit. When a collision occurs, even if there is no external input signal, or the input signal is faulty, fails, malfunctions, loses control, is disconnected, or fails to act, its omnidirectional collision sensor can still trigger the thyristor to conduct forcibly, switch the contacts to activate the emergency function. Through the built-in omnidirectional collision sensor and thyristor, the present application realizes the dual-mode coordination of conventional control and emergency triggering. Because the functions of the traditional relay are retained, the original vehicle circuit does not need to be modified and can be directly replaced, reflecting its strong compatibility. The same model relay of any vehicle can be directly replaced and substituted (i.e., plug and play) to achieve the purpose of quickly upgrading intelligent auxiliary safety. Since the present application belongs to an independent execution hardware and also belongs to intelligent safety hardware, it very much conforms to the scope of the mandatory dual-redundancy design in national standard legislation. Its intelligent fully compatible dual-mode design greatly improves the auxiliary safety guarantee performance of the vehicle body system and raises the passive safety index of the vehicle body to the extreme at one go.

[0026] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are specifically exemplified below. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0028] Figure 1 Schematic diagram of the connection of the internal omnidirectional collision sensor, thyristor and coil of a dual-mode emergency relay in an embodiment of the present invention;

[0029] Figure 2 Structural diagram of the appearance and pin electrical function layout of a dual-mode emergency relay in an embodiment of the present invention;

[0030] Figure 3 Schematic diagram of the interchange and function inheritance relationship between a dual-mode emergency relay and the original vehicle relay in an embodiment of the present invention;

[0031] Figure 4 External principle electric control schematic diagram after a dual-mode emergency relay in an embodiment of the present invention replaces the original relay.

[0032] Description of the drawing reference numerals: 100, coil; 200, control signal input pin; 300, negative power supply pin; 400, moving contact pin; 500, normally closed contact pin; 600, normally open contact pin; 700, thyristor; 800, power supply; 900, universal collision sensor; 1000, control switch. Detailed implementation manners

[0033] The general idea of the technical solution provided by the present invention is as follows:

[0034] Please refer to Figures 1 to 4 , the dual-mode emergency relay includes:

[0035] A coil 100, one end of the coil 100 is electrically connected to the control signal input pin 200, and the other end is electrically connected to the negative power supply pin 300. The coil 100 is used to drive the moving contact pin 400 to switch between the normally closed contact pin 500 and the normally open contact pin 600; specifically, the main function of the coil 100 is to control the switching of the moving contact pin 400 through electromagnetic attraction to indirectly control the execution of the large current output; one end of the coil 100 is electrically connected to the control signal input pin 200. This means that when an external control switch 1000 is turned on (such as a driver operation instruction or an output of a central controller) and applied to the control signal input pin 200, current can form a complete circuit loop through the coil 100 and the negative power supply pin 300. When current passes through the coil 100, according to the principle of electromagnetic induction, a magnetic field will be generated inside the coil 100, and its coil magnetic field will cause the moving contact pin 400 to switch between the normally closed contact pin 500 and the normally open contact pin 600, achieving the execution of the task. For example, the normally closed contact pin 500 is connected to the fuel pump oil supply system. When the control switch 1000 is turned on, the magnetic field of the coil 100 disconnects the normally closed contact pin 500 from the power supply 800, and the fuel pump stops supplying oil. If the normally open contact pin 600 is connected to the skylight motor, when the control switch 1000 is turned on, the magnetic field of the coil 100 conducts the normally open contact pin 600, and the power supply 800 supplies power to the skylight motor, and the skylight opens, and so on.

[0036] Thyristor 700, the anode of thyristor 700 is electrically connected to the moving contact pin 400, and the cathode of thyristor 700 is electrically connected to the control signal input pin 200; the main function of thyristor 700 is to drive the coil 100 by controlling the on / off of the current, so as to trigger an emergency response. Specifically, thyristor 700 (SCR, Silicon Controlled Rectifier) is a commonly used semiconductor device with the characteristic of continuous conduction after conduction, which is very suitable for emergency systems that require a self-holding function; the main circuit of thyristor 700 is connected between the power supply 800 and the input end of coil 100, so as to control the current path from the power supply 800 to the coil 100; for example, thyristor 700 uses the on and off characteristics of semiconductors to control the on and off of the current. Under normal conditions, the thyristor 700 is in an off state between the anode and the cathode. When an appropriate control signal is applied, the thyristor 700 can change from a high-impedance state (cut-off) to a low-impedance state (conductive), thus allowing current to pass through.

[0037] Omnidirectional collision sensor 900, one leg of the omnidirectional collision sensor 900 is connected to the control electrode of the thyristor 700, and the other leg of the omnidirectional collision sensor 900 is connected to the anode of the thyristor 700. The omnidirectional collision sensor 900 can monitor the acceleration threshold jump of the vehicle in all directions in real time. When a collision event is detected, the thyristor 700 is triggered to conduct permanently due to the acceleration exceeding the preset value, allowing current to pass through the coil 100, driving the moving contact pin 400 to switch, changing from normally closed to normally open, and from normally open to normally closed.

[0038] Relay housing, the coil 100, thyristor 700, omnidirectional collision sensor 900, moving contact pin 400, normally closed contact pin 500 and normally open contact pin 600 are all arranged inside the relay housing. Specifically, the shape of the relay housing is the same as that of the existing general automotive relay, including the functional layout of the pins, the pin pitch, size, arrangement method, height, dimensions, etc., to ensure its universality and interchangeability; the relay housing is used to encapsulate and protect the electrical components such as the coil 100, thyristor 700 and omnidirectional collision sensor 900 and contacts inside it, ensuring its safety and reliability in various environments.

[0039] Preferably, the thyristor 700 and the omnidirectional collision sensor 900 are integrated on a circuit board to achieve a compact structure and efficient electrical connection. The thyristor 700 and the omnidirectional collision sensor 900 are conventional electrical components and can be reasonably arranged inside the relay housing according to the actual space.

[0040] Further, when the switch signal of the control switch 1000 is input from the control signal input pin 200, the coil 100 is energized and conducts, causing the moving contact pin 400 to be attracted, and the normally closed contact of the relay becomes normally open, and the normally open contact becomes normally closed, which is well controlled by the external signal manipulation. Once a traffic accident occurs, although the external signal cannot be input, the thyristor 700 is triggered to conduct through the real-time omnidirectional sensing and detection of the omnidirectional collision sensor 900, so that the coil 100 can autonomously switch the contact state at the moment of collision to achieve an emergency response; under normal working conditions, the coil 100 is controlled by the external signal and is compatible with the original vehicle working circuit. When a collision occurs, the omnidirectional collision sensor 900 is used to emergency switch the relay contacts to achieve the dual-mode coordination of conventional control and emergency response. That is to say, the present invention completely retains the traditional relay function without modifying the original vehicle circuit structure and layout, and can directly realize replacement and substitution to achieve the purpose of quickly upgrading the security. It not only reflects its strong compatibility but also endows it with intelligent characteristics.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1 to 3 , the anode of the thyristor 700 is electrically connected to the moving contact pin 400, and the cathode of the thyristor 700 is electrically connected to the control signal input pin 200 of the coil 100. The conduction of the thyristor 700 requires a trigger signal to be applied to its control electrode. When the omnidirectional collision sensor 900 detects a collision, a trigger signal is sent to the control electrode of the thyristor 700. Once the thyristor 700 is triggered and conducts, even if the trigger signal disappears, the thyristor 700 still remains in the conducting state. This characteristic is called "self-holding", which ensures that even after the sensor signal disappears after a collision, the emergency function can still continue to be effective. For example, functions such as door unlocking and window opening will not fail due to signal interruption; when the thyristor 700 conducts, the current flows from the positive power supply 800 through the moving contact pin 400, through the anode and cathode of the thyristor 700, and flows to the coil 100, and its magnetic field drives the moving contact pin 400 to switch between the normally closed contact pin 500 and the normally open contact pin 600. For example, the door locking mechanism will switch from the locked state to the unlocked state, the window will switch from the closed state to the open state, the fuel pump will switch from the fuel supply state to the fuel cut-off state, and so on.

[0043] Further, please refer to Figure 2 and Figure 3, one terminal of the omnidirectional collision sensor 900 is electrically connected to the moving contact pin 400, the positive power supply 800, and the anode of the thyristor 700, and the other terminal of the omnidirectional collision sensor 900 is electrically connected to the control electrode of the thyristor 700. The power supply 800 is the working power input terminal of the omnidirectional collision sensor 900 and also the anode input terminal of the thyristor 700. The omnidirectional collision sensor 900 continuously monitors the acceleration changes of the vehicle in all directions. When the vehicle collides, the omnidirectional collision sensor 900 detects the jump of the acceleration and outputs a pulse trigger signal to the control electrode of the thyristor 700, making its anode and cathode conduct and allowing current to pass through.

[0044] Preferably, the thyristor 700 adopts a unidirectional thyristor structure.

[0045] Furthermore, metal lead-out pins are provided on the base of the relay housing. The metal lead-out pins are embedded in the base of the relay housing, and the number of metal lead-out pins on the base of the relay housing is 4 or 5. The metal lead-out pins serve as a bridge between the internal circuit and the external circuit of the relay to achieve current conduction and signal transmission. They lead out the functional pins inside the relay (such as the control signal input pin 200, the power supply negative pin 300, the moving contact pin 400, the normally closed contact pin 500, the normally open contact pin 600, etc.) to the outside of the relay, facilitating connection with the socket on the vehicle circuit board; whether it is a 4-pin or 5-pin layout design, it is the international standard version layout of existing automotive relays. The characteristic of a 4-pin relay is that only the normally closed contact pin 500 outputs, without the normally open contact pin 600 output; or only the normally open contact pin 600 outputs, without the normally closed contact pin 500 output.

[0046] For the convenience of direct replacement and upgrade, the appearance size of the relay housing and the functional layout of the pins of this dual-mode emergency relay are the same as those of the vehicle standard relay, with international general characteristics. In view of this, it can be interchanged and compatible with any existing similar relay. Any vehicle can complete the functional upgrade by simply pulling out the original relay and inserting this relay, without any additional modification or adjustment to the vehicle electrical system, thus simplifying the upgrade process.

[0047] Furthermore, the present disclosure also provides a usage method of a dual-mode emergency relay. The usage method is applied to a dual-mode emergency relay as described in the above embodiment. The usage method includes:

[0048] Directly replace the same type of standard relay on the original vehicle circuit board with the dual-mode emergency relay, where the layout, size, and electrical function definition of the metal lead-out pins of the dual-mode emergency relay are the same as those of the standard relay; the layout, size, and electrical function definition of the metal lead-out pins of the dual-mode emergency relay are the same as those of the standard relay, ensuring electrical connection and function inheritance after replacement. By pulling out the original vehicle relay from the socket and then inserting the dual-mode emergency relay into the same socket, this process does not require any additional modification or adjustment to the vehicle electrical system, simplifying the upgrade process.

[0049] Under normal operating conditions, drive the coil by applying an external control signal to the control signal input pin to control the switching of the moving contact pin between the normally closed contact pin and the normally open contact pin; under normal driving conditions, the dual-mode emergency relay operates in exactly the same way as the standard relay. The external control signal (such as the driver's operation instruction or the output of the central controller) is applied to the coil through the control signal input pin, and the magnetic field generated by the coil drives the moving contact pin to switch between the normally closed contact pin and the normally open contact pin to achieve control of the load. For example, when the driver presses the central locking button, the control signal input pin receives the signal, the coil is energized, the moving contact pin switches, and the door locking mechanism locks or unlocks accordingly. When the driver operates the sunroof switch, a similar control signal drives the moving contact pin to switch to open or close the sunroof.

[0050] When a vehicle collision occurs, sense the collision acceleration through the universal collision sensor and trigger the thyristor to conduct, so that the current flows from the moving contact pin, through the anode and cathode of the thyristor, to the control signal input pin and through the coil, thereby driving the moving contact pin to switch and realizing the emergency function, even if there is no effective external control signal applied to the control signal input pin at this time. Specifically, when a vehicle collision occurs, the universal collision sensor detects the jump of the collision acceleration and generates a trigger signal, which is applied to the control electrode of the thyristor to make it conduct.

[0051] Further, directly replacing the same type of standard relay on the original vehicle circuit board with the dual-mode emergency relay means physically inserting the dual-mode emergency relay into the socket of the original vehicle relay to achieve electrical connection and function inheritance.

[0052] Furthermore, the emergency function includes at least one of the following: door unlocking, emergency opening of windows or skylights, activation of the hazard warning lights, unlocking of child locks, power-off of the high-voltage electrical system, fuel cut-off, and electronic control emergency system. Door unlocking means automatically unlocking the doors during a collision to facilitate the escape of passengers; emergency opening of windows or skylights means automatically opening the windows or skylights to provide an escape route; activation of the hazard warning lights means activating the hazard warning lights to alert other vehicles; unlocking of child locks means automatically unlocking the child locks to facilitate the rescue of children by rescue personnel; power-off of the high-voltage electrical system means automatically cutting off the high-voltage electrical system during a collision to prevent electric leakage or fire in rainy weather; fuel cut-off means automatically cutting off the fuel supply to prevent fuel leakage and fire; and the electronic control emergency system means automatically executing a series of preset safety measures through the electronic control system when the vehicle collides to maximize the safety of passengers and provide an escape route.

[0053] The method for using the dual-mode emergency relay provided by the present invention realizes the upgrade of the vehicle safety performance through simple replacement operations. Under normal operating conditions, the relay works normally; during a collision, it can autonomously trigger the emergency function, greatly improving the safety of the vehicle and the escape ability of passengers.

[0054] The present disclosure also provides a control method for a dual-mode emergency relay. The control method is applied to a dual-mode emergency relay as described in the above embodiment. The control method includes:

[0055] Sensing a collision event occurring in the vehicle through the omnidirectional collision sensor to generate a trigger signal; the omnidirectional collision sensor continuously monitors the motion state of the vehicle. When a collision occurs, the sensor detects an acceleration change exceeding a preset threshold and determines it as a collision event. At this time, the sensor generates an electrical signal as a trigger signal for subsequent emergency responses.

[0056] Applying the trigger signal to the control electrode of the thyristor to turn on the thyristor; a thyristor is a semiconductor device with the characteristic of continuous conduction after being turned on. When the trigger signal is applied to the control electrode, a low-impedance path is formed between the anode and cathode of the thyristor, and current can flow through. This conduction state remains even after the trigger signal disappears until the power supply is cut off. This characteristic is called "self-locking".

[0057] The current flows from the moving contact pin connected to the power supply, through the anode and cathode of the turned-on thyristor, and further through the coil to the negative power supply pin; the moving contact pin is connected to the positive power supply. After the thyristor is turned on, the current flows from the moving contact pin through the anode and cathode of the thyristor. After passing through the coil, the current finally flows to the negative power supply, forming a complete circuit loop.

[0058] The current flowing through the coil generates a magnetic field, which drives the moving contact pin to switch from the state of contacting the normally closed contact pin to the state of contacting the normally open contact pin, or from the state of contacting the normally open contact pin to the state of contacting the normally closed contact pin, thereby realizing the emergency function; after the coil is powered on, according to the principle of electromagnetic induction, a magnetic field is generated inside, and the magnetic field acts on the moving contact pin, causing it to switch from the current state to another state. For example, the load connected to the normally closed contact pin (such as a door locking mechanism) becomes disconnected after the contact switches, realizing the unlocking function; the load connected to the normally open contact pin (such as a window motor) becomes conductive after the contact switches, realizing the emergency opening function.

[0059] Wherein, the thyristor remains in the self-locking conduction state after being triggered and conducting, maintaining the energization of the coil and the contact switching state until the power supply is cut off. The self-locking characteristic of the thyristor ensures the persistence of the emergency function. After a collision occurs, even if the sensor signal disappears or the external control signal fails, the emergency function is still effective. For example, functions such as door unlocking and window opening will not fail due to signal interruption. Only when the power supply is cut off manually to eliminate the fault will the thyristor stop conducting and the contact state will recover.

[0060] The dual-mode emergency relay control method provided by the present invention detects a collision event through a universal collision sensor, triggers the thyristor to conduct, forms a current path, drives the contact to switch, and realizes the emergency function; the self-locking characteristic of the thyristor ensures the persistence of the emergency function, and even in the case of signal failure after a collision, the emergency function is still effective; this control method improves the safety and reliability of the vehicle in an emergency situation and provides better escape and rescue conditions for the occupants.

[0061] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0062] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A dual-mode emergency relay, characterized in that, Comprising: A coil, one end of the coil is electrically connected to a control signal input pin, and the other end is electrically connected to a power negative pin. The coil is used to drive a moving contact pin to switch between a normally closed contact pin and a normally open contact pin; A thyristor, the anode of the thyristor is electrically connected to the moving contact pin, and the cathode of the thyristor is electrically connected to the control signal input pin; A universal collision sensor, one pin of the universal collision sensor is connected to the control electrode of the thyristor, and the other pin of the universal collision sensor is connected to the anode of the thyristor; A relay housing, the coil, thyristor, universal collision sensor, moving contact pin, normally closed contact pin and normally open contact pin are all arranged in the relay housing; A metal lead-out pin, the metal lead-out pin is embedded in the base of the relay housing.

2. The dual-mode emergency relay according to claim 1, wherein, The thyristor adopts a unidirectional thyristor structure.

3. A dual-mode emergency relay according to claim 1, characterized in that, The number of metal lead-out pins on the base of the relay housing is 4 or 5.

4. A method for using a dual-mode emergency relay, characterized in that, The usage method is applied to a dual-mode emergency relay as described in any one of claims 1-3. The usage method includes: Directly replacing the same type of standard relay on the original vehicle circuit board with the dual-mode emergency relay, wherein the layout, size and electrical function definition of the metal lead-out pins of the dual-mode emergency relay are the same as those of the standard relay; Under normal working conditions, by applying an external control signal to the control signal input pin, driving the coil to control the switching of the moving contact pin between the normally closed contact pin and the normally open contact pin; When a vehicle collision occurs, the universal collision sensor senses the collision acceleration and triggers the thyristor to conduct, so that the current flows from the moving contact pin, through the anode and cathode of the conducting thyristor, to the control signal input pin and through the coil, thereby driving the moving contact pin to switch and realizing the emergency function, even if no effective external control signal is applied to the control signal input pin at this time.

5. The usage method of a dual-mode emergency relay according to claim 4, characterized in that, The directly replacing the same type of standard relay on the original vehicle circuit board with the dual-mode emergency relay means physically inserting the dual-mode emergency relay into the socket of the original vehicle relay to achieve electrical connection and function inheritance.

6. The usage method of a dual-mode emergency relay according to any one of claims 4 or 5, characterized in that The emergency function includes at least one of the following: door unlocking, emergency opening of windows or sunroofs, activation of hazard warning lights, child lock unlocking, power-off of the high-voltage electrical system, fuel cut-off, and electronic control emergency system.

7. A control method for a dual-mode emergency relay, characterized in that, The control method is applied to a dual-mode emergency relay as described in any one of claims 1-3. The control method includes: Sensing a collision event occurring in the vehicle through the universal collision sensor to generate a trigger signal; Applying the trigger signal to the control electrode of the thyristor to make the thyristor conduct; The current flows from the moving contact pin connected to the power supply, through the anode and cathode of the conducting thyristor, and further through the coil to the power negative pin; The current flowing through the coil generates a magnetic field, driving the moving contact pin to switch from the state of contacting the normally closed contact pin to the state of contacting the normally open contact pin, or from the state of contacting the normally open contact pin to the state of contacting the normally closed contact pin, thereby realizing the emergency function; Among them, the thyristor remains in a self-locked conduction state after being triggered and conducting, maintaining the energization of the coil and the contact switching state until the power supply is cut off.

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