Fault intelligent sensing and early warning system suitable for electric bicycle

Abstract

The utility model discloses an intelligent fault sensing and early warning system suitable for an electric bicycle, and relates to the technical field of power utilization safety. The system comprises an electric bicycle charger anode output access terminal, an electric bicycle charger cathode output access terminal, an electric bicycle circuit information detection unit, an electric bicycle circuit fault diagnosis and charger input on-off control unit, a fault early warning information generation unit and an early warning information sending unit. Information detection and fault diagnosis can be carried out on an electric bicycle circuit through the specific connection relation of the electric bicycle circuit, charger input on-off control can be carried out according to a diagnosis result, and a fault early warning information sending action can be executed, so that charging can be automatically interrupted and a bicycle owner can be warned when the electric bicycle circuit has a fault; therefore, the bicycle owner can take corresponding remedial measures, the situation deterioration and electric safety accidents such as spontaneous combustion of the electric bicycle or fire during charging are avoided, and practical application and popularization are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical safety, and particularly relates to a fault intelligent induction and warning system applicable to electric bicycles. Background Art

[0002] An electric bicycle refers to a means of transportation that uses a battery as an auxiliary energy source and is equipped with operating components such as a motor, a controller, a battery, a handlebar, and a brake handle, as well as a display instrument system on the basis of an ordinary bicycle.

[0003] Currently, existing electric bicycles only provide a power operation mode. As for whether faults such as battery and power line aging, leakage, or short circuit occur during the use of electric bicycles, the vehicle owners are unaware. If the electric bicycle continues to be used, it may lead to electrical safety accidents such as the spontaneous combustion of the electric bicycle or a fire during charging, posing a serious threat to the life and property safety of the vehicle owners. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fault intelligent induction and warning system applicable to electric bicycles, so as to solve the problem that existing electric bicycles may cause electrical safety accidents such as the spontaneous combustion of the electric bicycle or a fire during charging because they cannot automatically interrupt charging and inform users when a circuit fault occurs.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, a fault intelligent induction and warning system applicable to electric bicycles is provided, including a positive output access terminal of an electric bicycle charger, a negative output access terminal of an electric bicycle charger, an electric bicycle circuit information detection unit, an electric bicycle circuit fault diagnosis and charger input on-off control unit, a fault warning information generation unit, and a warning information sending unit;

[0007] The positive input terminal of the electric bicycle circuit information detection unit is electrically connected to the positive output access terminal of the electric bicycle charger, the negative input terminal of the electric bicycle circuit information detection unit is electrically connected to the negative output access terminal of the electric bicycle charger, and the detection information output terminal of the electric bicycle circuit information detection unit is communicatively connected to the detection information input terminal of the electric bicycle circuit fault diagnosis and charger input on-off control unit;

[0008] The electric bicycle circuit fault diagnosis and charger input on-off control unit, the fault warning information generation unit, and the warning information sending unit are communicatively connected in sequence.

[0009] Based on the above-mentioned utility model content, a new solution for intelligent fault induction and early warning of the electric bicycle circuit is provided, which includes the positive output access terminal of the electric bicycle charger, the negative output access terminal of the electric bicycle charger, the electric bicycle circuit information detection unit, the electric bicycle circuit fault diagnosis and charger input on-off control unit, the fault early warning information generation unit, and the early warning information sending unit. Through their specific connection relationships, the information detection and fault diagnosis of the electric bicycle circuit can be carried out, and the on-off control of the charger input can be performed according to the diagnosis result and the action of sending the fault early warning information can be executed. In this way, the charging can be automatically interrupted and the owner can be alerted when a fault occurs in the electric bicycle circuit, which is conducive to the owner taking corresponding remedial measures to avoid the situation from deteriorating and prevent electrical safety accidents such as the spontaneous combustion of the electric bicycle or the occurrence of a fire during charging, facilitating practical application and promotion.

[0010] In a possible design, the electric bicycle circuit information detection unit includes a fuse, a first electrolytic capacitor, a second electrolytic capacitor, a power management chip, a resistor, and a circuit detection sensor. Among them, the circuit detection sensor includes a circuit current sensor, a circuit voltage sensor, and / or a circuit temperature sensor;

[0011] One end of the fuse is used as the positive input terminal of the electric bicycle circuit information detection unit, the other end of the fuse is electrically connected to the anode of the first electrolytic capacitor, and the cathode of the first electrolytic capacitor is electrically connected to the positive input terminal of the power management chip;

[0012] The anode of the second electrolytic capacitor is used as the negative input terminal of the positive input terminal, and the cathode of the second electrolytic capacitor is electrically connected to the negative input terminal of the power management chip;

[0013] The positive output terminal of the power management chip is electrically connected to one end of the resistor, the other end of the resistor is electrically connected to the positive input terminal of the circuit detection sensor, and the negative output terminal of the power management chip is electrically connected to the negative input terminal of the circuit detection sensor;

[0014] The detection information output terminal of the circuit detection sensor is used as the detection information output terminal of the electric bicycle circuit information detection unit.

[0015] In a possible design, the electric bicycle circuit fault diagnosis and charger input on-off control unit includes a control chip, a relay driver chip, and a solid-state relay. Among them, the detection information input terminal of the control chip is used as the detection information input terminal of the electric bicycle circuit fault diagnosis and charger input on-off control unit, and the contact switch branch of the solid-state relay is used to be connected in series with the input terminal of the electric bicycle charger;

[0016] The control signal output terminal of the control chip is communicatively connected to the control signal input terminal of the relay driver chip, the drive signal output terminal of the relay driver chip is communicatively connected to the drive signal input terminal of the solid-state relay, and the control chip is communicatively connected to the fault warning information generation unit.

[0017] In a possible design, the electric bicycle circuit fault diagnosis and charger input on-off control unit further includes a battery management chip, a charging management chip, and a charging status indicator. Among them, the battery management chip is used to be electrically connected to the electric bicycle battery and perform battery management, and the charging management chip is used to be electrically connected to the electric bicycle battery and perform battery charging management;

[0018] The battery management chip and the charging management chip are respectively communicatively connected to the control chip, and the charging status indicator is electrically connected to the charging management chip.

[0019] In a possible design, the electric bicycle circuit fault diagnosis and charger input on-off control unit further includes a crystal oscillator module and a first decoupling capacitor. Among them, the output terminal of the crystal oscillator module is communicatively connected to the control chip, one end of the first decoupling capacitor is electrically connected to the positive power input terminal of the control chip, and the other end of the first decoupling capacitor is grounded.

[0020] In a possible design, the fault warning information generation unit includes a main control chip and a second decoupling capacitor. Among them, the main control chip is respectively communicatively connected to the electric bicycle circuit fault diagnosis and charger input on-off control unit and the warning information sending unit, one end of the second decoupling capacitor is electrically connected to the positive power input terminal of the main control chip, and the other end of the second decoupling capacitor is grounded.

[0021] In a possible design, the warning information sending unit includes a storage module communicatively connected to the fault warning information generation unit, and a wireless communication module and / or a voice broadcast module communicatively connected to the storage module. Among them, the wireless communication module includes a wireless transceiver and a transceiver antenna communicatively connected to each other, and the voice broadcast module includes a voice chip and a speaker communicatively connected to each other.

[0022] In a possible design, it further includes a display screen communicatively connected to the fault warning information generation unit.

[0023] In a possible design, it further includes a debugging interface communicatively connected to the electric bicycle circuit fault diagnosis and charger input on-off control unit.

[0024] In a possible design, it also includes an electric bicycle charger plug ground access terminal, wherein the electric bicycle charger plug ground access terminal is electrically connected to the ground access terminal of the electric bicycle circuit information detection unit, the ground terminal of the electric bicycle circuit fault diagnosis and charger input on-off control unit and the ground terminal of the fault warning information generation unit.

[0025] Beneficial effects of the above scheme:

[0026] (1) The utility model creatively provides a new solution for intelligently sensing and warning faults in the electric bicycle circuit, namely, it includes an electric bicycle charger positive output access terminal, an electric bicycle charger negative output access terminal, an electric bicycle circuit information detection unit, an electric bicycle circuit fault diagnosis and charger input on-off control unit, a fault warning information generation unit and a warning information sending unit. Through their specific connection relationship, the electric bicycle circuit can be detected and diagnosed, and the charger input on-off control and fault warning information sending action can be performed according to the diagnosis result. In this way, when the electric bicycle circuit fails, charging can be automatically interrupted and the owner can be warned, which can help the owner take corresponding remedial measures to avoid the deterioration of the situation and the occurrence of electrical safety accidents such as spontaneous combustion of the electric bicycle or fire during charging, which is convenient for practical application and promotion.

[0027] (2) It can monitor the health status of the internal circuit and battery of the electric bicycle in real time, and display the monitoring results on the front display screen of the electric bicycle, so that the owner can clearly see the status of the circuit and battery of the electric bicycle;

[0028] (3) The charger display can display the health status of the charger and battery, so that the owner can see at a glance the status of their charger and battery;

[0029] (4) When the electric bicycle is to be charged and the owner plugs it into a power source, the display screen will only show that the charger and battery are in good health before the button switch on the charger can be turned on to enter the charging state. Otherwise, the charging button cannot be turned on. During the charging process, the charging progress information can be sent to the owner's mobile phone, so that the owner can see at a glance whether his electric bicycle is fully charged.

[0030] (5) When the circuit of the vehicle body or the battery ages and the health status displayed on the display screen is lower than the health value, it will display the fault point and send an early warning and remote information warning to the owner, reminding the owner to repair or replace the fault point;

[0031] (6) If the owner continues to use the vehicle without repairing or replacing it, the power supply will be cut off, making it impossible for the owner to drive the vehicle, thus preventing the vehicle from spontaneously catching fire while driving due to the owner's ignorance;

[0032] (7) If a fault occurs in the charger or battery due to aging during the charging process, the charger will immediately cut off the power supply and remotely notify the vehicle owner of the fault point, reminding the vehicle owner to handle it immediately, thus preventing fires caused by the vehicle owner's ignorance during charging.

[0033] (8) The circuit structure layout of this system is reasonable, and each functional module maintains stability, facilitating maintenance and upgrading.

[0034] (9) This system can effectively solve the spontaneous combustion problem of existing electric bicycles caused by aging of the circuit or battery, and more importantly, can effectively solve the social pain point of fires caused by aging of the charger or battery of existing electric bicycles during charging, having good social benefits. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings in the description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0036] Figure 1 It is a schematic circuit structure diagram of a fault intelligent induction and warning system applicable to electric bicycles provided by an embodiment of this application. Detailed Embodiments

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawing structure is only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these embodiments. It should be noted here that the description of these embodiment modes is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0038] It should be understood that although terms such as first and second etc. may be used herein to describe various objects, these objects should not be limited by these terms. These terms are only used to distinguish one object from another. For example, the first object can be called the second object, and similarly, the second object can be called the first object, without departing from the scope of the exemplary embodiments of the present invention.

[0039] It should be understood that for the term "and / or" that may appear in this text, it is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, B exists alone, or both A and B exist simultaneously. Another example, A, B, and / or C can represent any one of A, B, and C or any combination of them. For the term " / and" that may appear in this text, it is a description of another association object relationship, indicating that there can be two relationships. For example, A / and B can represent two situations: A exists alone or both A and B exist simultaneously. In addition, for the character " / " that may appear in this text, it generally indicates that the associated objects before and after are in an "or" relationship.

[0040] Embodiment

[0041] As Figure 1 As shown, the fault intelligent induction warning system provided in this embodiment and applicable to electric bicycles includes, but is not limited to, the positive output access terminal P+ of the electric bicycle charger, the negative output access terminal P- of the electric bicycle charger, the electric bicycle circuit information detection unit, the electric bicycle circuit fault diagnosis and charger input on / off control unit, the fault warning information generation unit, the warning information sending unit, etc. The positive input terminal of the electric bicycle circuit information detection unit is electrically connected to the positive output access terminal P+ of the electric bicycle charger, the negative input terminal of the electric bicycle circuit information detection unit is electrically connected to the negative output access terminal P- of the electric bicycle charger, and the detection information output terminal of the electric bicycle circuit information detection unit is communicatively connected to the detection information input terminal of the electric bicycle circuit fault diagnosis and charger input on / off control unit. The electric bicycle circuit fault diagnosis and charger input on / off control unit, the fault warning information generation unit, and the warning information sending unit are communicatively connected in sequence.

[0042] As Figure 1As shown, in the specific structure of the fault intelligent induction warning system, the positive output access terminal P+ of the electric bicycle charger is used to electrically connect the positive output terminal of the electric bicycle charger. The negative output access terminal P- of the electric bicycle charger is used to electrically connect the negative output terminal of the electric bicycle charger. The electric bicycle circuit information detection unit is used to routinely and real-time collect and obtain the detection information of parameters such as current, voltage, and temperature of the internal circuit of the electric bicycle (this includes the internal circuit of the electric bicycle charger) and the battery, and transmit the detection information to the electric bicycle circuit fault diagnosis and charger input on / off control unit. Specifically, the electric bicycle circuit information detection unit includes but is not limited to a fuse F1, a first electrolytic capacitor C1, a second electrolytic capacitor C2, a power management chip, a resistor R1, and a circuit detection sensor, etc. Among them, the circuit detection sensor includes but is not limited to a circuit current sensor, a circuit voltage sensor, and / or a circuit temperature sensor, etc.; one end of the fuse F1 is used as the positive input terminal of the electric bicycle circuit information detection unit, the other end of the fuse F1 is electrically connected to the anode of the first electrolytic capacitor C1, and the cathode of the first electrolytic capacitor C1 is electrically connected to the positive input terminal of the power management chip; the anode of the second electrolytic capacitor C2 is used as the negative input terminal of the positive input terminal, and the cathode of the second electrolytic capacitor C2 is electrically connected to the negative input terminal of the power management chip; the positive output terminal of the power management chip is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to the positive input terminal of the circuit detection sensor, and the negative output terminal of the power management chip is electrically connected to the negative input terminal of the circuit detection sensor; the detection information output terminal of the circuit detection sensor is used as the detection information output terminal of the electric bicycle circuit information detection unit. The aforementioned power management chip is used to manage the input direct current to supply power to the circuit detection sensor and other power-consuming modules (for example, the positive output terminal and the negative output terminal of the circuit detection sensor can be respectively and correspondingly electrically connected to the power input terminal and the ground terminal of the control chip in the electric bicycle circuit fault diagnosis and charger input on / off control unit to realize power supply to the control chip), that is, to control the power supply situation of the entire system; the power management chip is exemplified but not limited to be implemented by using chips of the following models: TPS5430, LT3478, or NCP1252, etc. The fuse F1 is used to achieve the purpose of overcurrent and overvoltage protection, the first electrolytic capacitor C1 and the second electrolytic capacitor C2 are used to achieve the purpose of direct current isolation protection, and the resistor R1 is used to achieve the purpose of current limiting protection.The circuit current sensor is used to routinely and real-time collect the current detection information of the internal circuit and battery of the electric bicycle. The circuit voltage sensor is used to routinely and real-time collect the voltage detection information of the internal circuit and battery of the electric bicycle. The circuit temperature sensor is used to routinely and real-time collect the temperature detection information of the internal circuit and battery of the electric bicycle. In this way, the purpose of real-time collecting the internal circuit and battery of the electric bicycle and the detection information of parameters such as current, voltage, and temperature can be achieved. In addition, in order to achieve the purpose of removing noise and filtering to provide stable power supply to the circuit current sensor, the electric bicycle circuit information detection unit further includes a third decoupling capacitor QC3. Wherein, one end of the third decoupling capacitor QC3 is electrically connected to the positive output end of the power management chip, and the other end of the third decoupling capacitor QC3 is grounded.

[0043] The electric bicycle circuit fault diagnosis and charger input on-off control unit is used to diagnose the electric bicycle circuit faults according to the detection information from the electric bicycle circuit information detection unit, and perform charger input on-off control according to the diagnosis result, and control the fault warning information generation unit to perform warning information generation control. The specific process of diagnosing the electric bicycle circuit faults according to the detection information can be conventionally realized by using existing technical means. For example, based on the internal circuit and battery of the electric bicycle and the detection information of parameters such as current, voltage, and temperature, a conventional analysis algorithm is used to analyze the health status index values of the internal circuit and battery of the electric bicycle in real time. If the health status index value is lower than the preset threshold, it is determined that there are faults such as battery and power line aging, leakage, or short circuit in the internal circuit and battery of the electric bicycle, otherwise it is determined that there are no faults. The specific manner of performing charger input on-off control according to the diagnosis result can be but is not limited to conventionally: when it is determined that there is a fault, control the input end of the charger of the electric bicycle to be disconnected, otherwise control the input end of the charger of the electric bicycle to be conducted. The specific manner of controlling the fault warning information generation unit to perform warning information generation control can be but is not limited to conventionally: when it is determined that there is a fault, control the fault warning information generation unit to generate fault warning information, otherwise control the fault warning information generation unit not to generate fault warning information. Specifically, the electric bicycle circuit fault diagnosis and charger input on-off control unit includes but is not limited to a control chip, a relay driver chip, and a solid-state relay, etc. Among them, the detection information input end of the control chip is used as the detection information input end of the electric bicycle circuit fault diagnosis and charger input on-off control unit, and the contact switch branch of the solid-state relay is used to be connected in series with the input end PI of the electric bicycle charger; the control signal output end of the control chip is communicatively connected to the control signal input end of the relay driver chip, and the drive signal output end of the relay driver chip is communicatively connected to the drive signal input end of the solid-state relay, and the control chip is communicatively connected to the fault warning information generation unit. The control chip is used as the core of the electric bicycle circuit fault diagnosis and charger input on-off control unit to diagnose the electric bicycle circuit faults according to the detection information from the electric bicycle circuit information detection unit, and according to the diagnosis result, control the relay driver chip to perform charger input on-off control, and control the fault warning information generation unit to perform warning information generation control; the control chip is specifically but not limited to be implemented by using a microcontroller chip of the SP32 / STM32 series, such as a chip of the model PIC24FJ64GA002, STM32F103C8T6, or MSP430F5529, etc. Thus, through the foregoing specific circuit structure design, the purpose of performing charger input on-off control according to the diagnosis result can be achieved.In addition, the relay driving chip can also be conventionally implemented using an existing driving chip.

[0044] The fault warning information generation unit is used to generate warning information when an electric bicycle circuit fault occurs. Specifically, the fault warning information generation unit includes, but is not limited to, a main control chip and a second decoupling capacitor QC2. Among them, the main control chip is communicatively connected to the electric bicycle circuit fault diagnosis and charger input on / off control unit and the warning information sending unit respectively. One end of the second decoupling capacitor QC2 is electrically connected to the positive power input terminal of the main control chip, and the other end of the second decoupling capacitor QC2 is grounded. The main control chip is used as the core of the fault warning information generation unit to generate warning information when an electric bicycle circuit fault occurs; the main control chip is implemented, for example but not limited to, using a CPU (Central Processing Unit) chip of the following models: STM32F446RE, PIC32MX795F512L or TMS320F28379D, etc.; as Figure 1 shown, the main control chip is communicatively connected to the control chip specifically through an SCL (Serial Clock Line) line and an SDA (Serial Data) line. In addition, through the setting of the second decoupling capacitor QC2, the purpose of removing noise to filter and provide stable power supply to the main control chip can be achieved; the specific content of the warning information can include, but is not limited to, the fault type and the health status index values of the internal circuit and battery of the electric bicycle and / or specific circuit detection information, etc.

[0045] The warning information sending unit is used to send the generated warning information to the vehicle owner, so as to give a timely warning to the vehicle owner when there are faults such as aging, leakage or short - circuit of the internal circuit and battery of the electric bicycle. Furthermore, it is beneficial for the vehicle owner to take corresponding remedial measures to avoid the deterioration of the situation. Specifically, the warning information sending unit includes, but is not limited to, a storage module communicatively connected to the fault warning information generating unit, and a wireless communication module and / or a voice broadcast module communicatively connected to the storage module. Among them, the wireless communication module includes, but is not limited to, a wireless transceiver and a transceiver antenna communicatively connected, etc. The voice broadcast module includes, but is not limited to, a voice chip and a speaker communicatively connected. The aforementioned storage module is used to cache the warning information or other information, and is specifically but not limited to be implemented by using an SD (Secure Digital) card. The wireless communication module is used to wirelessly send the warning information or other information to the remote vehicle owner, and specifically can but is not limited to be implemented by using WiFi or other wireless methods. The voice broadcast module is used to send the warning information or other information to the proximal vehicle owner by voice. Among them, the voice chip is used to convert the warning information or other information into an audio signal for voice playback in combination with the speaker; the voice chip is exemplified but not limited to be implemented by using chips of the following models: ISD1760, WTV020SD or LM386, etc. Thus, through the foregoing specific design, proximal warning to the vehicle owner can be realized, and distal warning to the vehicle owner can also be realized, ensuring the overall effectiveness of the warning.

[0046] Based on the foregoing detailed description of the fault intelligent induction warning system, a new solution capable of fault intelligent induction and warning for the electric bicycle circuit is provided, that is, it includes a positive output access terminal of the electric bicycle charger, a negative output access terminal of the electric bicycle charger, an electric bicycle circuit information detection unit, an electric bicycle circuit fault diagnosis and charger input on - off control unit, a fault warning information generating unit and a warning information sending unit. And through their specific connection relationships, information detection and fault diagnosis of the electric bicycle circuit can be carried out, and the on - off control of the charger input can be performed according to the diagnosis result and the fault warning information sending action can be executed. In this way, charging can be automatically interrupted and a warning can be given to the vehicle owner when there is a fault in the electric bicycle circuit. Furthermore, it is beneficial for the vehicle owner to take corresponding remedial measures to avoid the deterioration of the situation and the occurrence of electrical safety accidents such as the spontaneous combustion of the electric bicycle or a fire during charging, which is convenient for practical application and promotion.

[0047] Preferably, the electric bicycle circuit fault diagnosis and charger input on-off control unit further includes, but is not limited to, a battery management chip, a charging management chip, a charging status indicator D1, etc. Among them, the battery management chip is used to be electrically connected to the electric bicycle battery BTA and perform battery management, and the charging management chip is used to be electrically connected to the electric bicycle battery BTA and perform battery charging management; the battery management chip and the charging management chip are respectively communicatively connected to the control chip, and the charging status indicator D1 is electrically connected to the charging management chip. The specific methods of the foregoing battery management and battery charging management can be conventionally implemented by existing technical means. For example, during the battery charging management process, if it is found that the battery is full, the charger input can be disconnected through the control chip, the relay driver chip, and the solid-state relay, that is, the charging power supply is cut off, effectively preventing the battery from malfunctioning due to overcharging. The foregoing charging status indicator D1 can be, but is not limited to, a red-green dual-color indicator: a red light indicates charging, and a green light indicates that the battery is full. In addition, after the control chip obtains the management process information (such as battery status information, battery charging progress information, and battery full indication information, etc.) from the battery management chip and the charging management chip in real time, these information can also be sent to the fault warning information generation unit, so as to be sent to the vehicle owner through the warning information sending unit, enabling the vehicle owner to more comprehensively understand the specific situation of the electric bicycle.

[0048] Preferably, the electric bicycle circuit fault diagnosis and charger input on-off control unit further includes, but is not limited to, a crystal oscillator module and a first decoupling capacitor QC1. Among them, the output end of the crystal oscillator module is communicatively connected to the control chip, one end of the first decoupling capacitor QC1 is electrically connected to the positive power input end of the control chip, and the other end of the first decoupling capacitor QC1 is grounded. The foregoing crystal oscillator module is used to provide a clock and synchronization signal to the control chip, and can be specifically implemented by an existing crystal oscillator circuit; as Figure 1 shown, the crystal oscillator module is specifically communicatively connected to the control chip through an SPI (Serial Perripheral Interface) line. In addition, by setting the first decoupling capacitor QC1, the purpose of removing noise and filtering to provide stable power supply to the control chip can be achieved.

[0049] Preferably, it further includes a display screen communicatively connected to the fault warning information generation unit. The aforementioned display screen is used to display the warning information or other information (such as battery status information, battery charging progress information, battery full indication information, etc.) on-site, so as to facilitate the vehicle owner to comprehensively understand the fault situation or other specific situations of the electric bicycle on-site; specifically, it can be but is not limited to using existing OLED (Organic Light-Emitting Diode) or LCD (Liquid Crystal Display) display screens on the electric bicycle or charger, etc. to achieve this. In addition, the display screen can also be regarded as a warning information sending unit (i.e., warning by emitting optical signals).

[0050] Preferably, it further includes a debugging interface communicatively connected to the electric bicycle circuit fault diagnosis and charger input on / off control unit. As Figure 1 shown, through the setting of the debugging interface, it is also possible to achieve the purpose of debugging the electric bicycle circuit fault diagnosis and charger input on / off control unit, the fault warning information generation unit, the warning information sending unit, etc. at any time. In addition, as Figure 1 shown, the debugging interface is specifically communicatively connected to the control chip through SWDIO (Serial Wire Debug Data I / O) line and SWCLK (Serial Wire Clock) line.

[0051] Preferably, it further includes a ground wire access terminal PE for the electric bicycle charger plug. Among them, the ground wire access terminal PE for the electric bicycle charger plug is electrically connected to the ground wire access end of the electric bicycle circuit information detection unit, the grounding end of the electric bicycle circuit fault diagnosis and charger input on / off control unit, and the grounding end of the fault warning information generation unit. The aforementioned ground wire access terminal PE for the electric bicycle charger plug is used to electrically connect the ground wire of the electric bicycle charger plug. Through the above design, electromagnetic compatibility and safety can be reflected.

[0052] In summary, adopting the fault intelligent induction warning system provided by this embodiment has the following technical effects:

[0053] (1) This embodiment provides a new solution for intelligently sensing and warning faults in the electric bicycle circuit, namely, it includes an electric bicycle charger positive output access terminal, an electric bicycle charger negative output access terminal, an electric bicycle circuit information detection unit, an electric bicycle circuit fault diagnosis and charger input on-off control unit, a fault warning information generation unit and a warning information sending unit. Through their specific connection relationship, the electric bicycle circuit can be detected and fault diagnosed, and the charger input on-off control and fault warning information sending action can be performed according to the diagnosis result. In this way, when the electric bicycle circuit fails, charging can be automatically interrupted and the owner can be warned, which can help the owner take corresponding remedial measures to avoid the deterioration of the situation and the occurrence of electrical safety accidents such as spontaneous combustion of the electric bicycle or fire during charging, which is convenient for practical application and promotion.

[0054] (2) It can monitor the health status of the internal circuit and battery of the electric bicycle in real time, and display the monitoring results on the front display screen of the electric bicycle, so that the owner can clearly see the status of the circuit and battery of the electric bicycle;

[0055] (3) The charger display can display the health status of the charger and battery, so that the owner can see at a glance the status of their charger and battery;

[0056] (4) When the electric bicycle is to be charged and the owner plugs it into a power source, the display screen will only show that the charger and battery are in good health before the button switch on the charger can be turned on to enter the charging state. Otherwise, the charging button cannot be turned on. During the charging process, the charging progress information can be sent to the owner's mobile phone, so that the owner can see at a glance whether his electric bicycle is fully charged.

[0057] (5) When the circuit of the vehicle body or the battery ages and the health status displayed on the display screen is lower than the health value, it will display the fault point and send an early warning and remote information warning to the owner, reminding the owner to repair or replace the fault point;

[0058] (6) If the owner continues to use the vehicle without repairing or replacing it, the power supply will be cut off, making it impossible for the owner to drive the vehicle, thus preventing the vehicle from spontaneously catching fire while driving due to the owner's ignorance;

[0059] (7) If the charger or battery fails during charging due to aging, the charger will immediately cut off the power supply and remotely notify the owner of the fault point, reminding the owner to deal with it immediately, thus preventing fires caused by charging due to the owner's ignorance;

[0060] (8) The circuit structure of this system is reasonably laid out, and each functional module maintains stability, which is convenient for maintenance and upgrading;

[0061] (9) This system can effectively solve the spontaneous combustion problem caused by the aging of the circuits or batteries of existing electric bicycles, and more importantly, it can effectively solve the social pain point of fires caused by the aging of chargers or batteries during charging of existing electric bicycles, thus having good social benefits.

[0062] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fault intelligent sensing warning system suitable for electric bicycles, characterized in that: It includes an electric bicycle charger positive output access terminal (P+), an electric bicycle charger negative output access terminal (P-), an electric bicycle circuit information detection unit, an electric bicycle circuit fault diagnosis and charger input on-off control unit, a fault warning information generation unit and a warning information sending unit; The positive input terminal of the electric bicycle circuit information detection unit is electrically connected to the positive output access terminal (P+) of the electric bicycle charger, the negative input terminal of the electric bicycle circuit information detection unit is electrically connected to the negative output access terminal (P-) of the electric bicycle charger, and the detection information output terminal of the electric bicycle circuit information detection unit is communicatively connected to the detection information input terminal of the electric bicycle circuit fault diagnosis and charger input on-off control unit; The electric bicycle circuit fault diagnosis and charger input on-off control unit, the fault warning information generating unit and the warning information sending unit are communicatively connected in sequence.

2. The intelligent fault sensing warning system according to claim 1, characterized in that: The electric bicycle circuit information detection unit comprises a fuse (F1), a first electrolytic capacitor (C1), a second electrolytic capacitor (C2), a power management chip, a resistor (R1) and a circuit detection sensor, wherein the circuit detection sensor comprises a circuit current sensor, a circuit voltage sensor and / or a circuit temperature sensor; One end of the fuse (F1) is used as the positive input end of the electric bicycle circuit information detection unit, the other end of the fuse (F1) is electrically connected to the anode of the first electrolytic capacitor (C1), and the cathode of the first electrolytic capacitor (C1) is electrically connected to the positive input end of the power management chip; The anode of the second electrolytic capacitor (C2) is used as the negative input terminal of the positive input terminal, and the cathode of the second electrolytic capacitor (C2) is electrically connected to the negative input terminal of the power management chip; The positive output end of the power management chip is electrically connected to one end of the resistor (R1), the other end of the resistor (R1) is electrically connected to the positive input end of the circuit detection sensor, and the negative output end of the power management chip is electrically connected to the negative input end of the circuit detection sensor; The detection information output end of the circuit detection sensor is used as the detection information output end of the electric bicycle circuit information detection unit.

3. The intelligent fault sensing warning system according to claim 1, characterized in that: The electric bicycle circuit fault diagnosis and charger input on-off control unit comprises a control chip, a relay drive chip and a solid-state relay, wherein the detection information input end of the control chip is used as the detection information input end of the electric bicycle circuit fault diagnosis and charger input on-off control unit, and the contact switch branch of the solid-state relay is used to be connected in series with the input end (PI) of the electric bicycle charger; The control signal output terminal of the control chip is communicatively connected to the control signal input terminal of the relay driving chip, the driving signal output terminal of the relay driving chip is communicatively connected to the driving signal input terminal of the solid-state relay, and the control chip is communicatively connected to the fault warning information generating unit.

4. The intelligent fault sensing warning system according to claim 3, characterized in that: The electric bicycle circuit fault diagnosis and charger input on-off control unit also includes a battery management chip, a charging management chip and a charging status indicator light (D1), wherein the battery management chip is used to electrically connect to the electric bicycle battery (BTA) and perform battery management, and the charging management chip is used to electrically connect to the electric bicycle battery (BTA) and perform battery charging management; The battery management chip and the charging management chip are respectively communicatively connected to the control chip, and the charging status indicator light (D1) is electrically connected to the charging management chip.

5. The intelligent fault sensing warning system according to claim 3, characterized in that: The electric bicycle circuit fault diagnosis and charger input on-off control unit also includes a crystal oscillator module and a first decoupling capacitor (QC1), wherein the output end of the crystal oscillator module is communicatively connected to the control chip, one end of the first decoupling capacitor (QC1) is electrically connected to the positive power input end of the control chip, and the other end of the first decoupling capacitor (QC1) is grounded.

6. The intelligent fault sensing warning system according to claim 1, characterized in that: The fault warning information generating unit includes a main control chip and a second decoupling capacitor (QC2), wherein the main control chip is communicatively connected to the electric bicycle circuit fault diagnosis and charger input on-off control unit and the warning information sending unit respectively, one end of the second decoupling capacitor (QC2) is electrically connected to the positive power input terminal of the main control chip, and the other end of the second decoupling capacitor (QC2) is grounded.

7. The intelligent fault sensing warning system according to claim 1, characterized in that: The warning information sending unit includes a storage module communicatively connected to the fault warning information generating unit and a wireless communication module and / or a voice broadcast module communicatively connected to the storage module, wherein the wireless communication module includes a wireless transceiver and a transceiver antenna communicatively connected, and the voice broadcast module includes a voice chip and a speaker communicatively connected.

8. The intelligent fault sensing warning system according to claim 1, characterized in that: It also includes a display screen that is communicatively connected to the fault warning information generating unit.

9. The intelligent fault sensing warning system according to claim 1, characterized in that: It also includes a debugging interface that is communicatively connected to the electric bicycle circuit fault diagnosis and charger input on-off control unit.

10. The intelligent fault sensing warning system according to claim 1, characterized in that: It also includes an electric bicycle charger plug ground access terminal (PE), wherein the electric bicycle charger plug ground access terminal (PE) is electrically connected to the ground access terminal of the electric bicycle circuit information detection unit, the ground terminal of the electric bicycle circuit fault diagnosis and charger input on-off control unit, and the ground terminal of the fault warning information generation unit.

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