Reverse connection prevention device and method and emergency starting power supply equipment

Abstract

The invention discloses an anti-reverse-connection device and method and emergency starting power supply equipment, the anti-reverse-connection device comprises a clamp assembly and a control unit, the control unit is provided with a piezoelectric ceramic assembly, the clamp assembly is configured to be connected with an automobile storage battery, the clamp assembly is electrically connected to the control unit, and the piezoelectric ceramic assembly is electrically connected to the control unit. The piezoelectric ceramic assembly generates a corresponding deformation signal according to the connection state of the clamp assembly and the automobile storage battery. Wherein the control unit determines the connection state of the clamp assembly and the automobile storage battery according to a deformation signal of the piezoelectric ceramic assembly, and if the clamp assembly is positively connected with the automobile storage battery, the control unit controls the emergency starting power supply to charge the automobile storage battery; and if the clamp assembly is reversely connected with the automobile storage battery, the control unit controls the emergency starting power supply to stop charging the automobile storage battery, so that reverse current flow caused by reverse polarity connection is effectively prevented, an automobile electrical system and the emergency starting power supply are prevented from being damaged, and the use safety and reliability are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply safety, in particular to a reverse connection prevention device and method, and an emergency starting power supply device. BACKGROUND

[0002] In the actual use process of the emergency starting power supply of the automobile, the clip assembly is usually required to be electrically connected with the automobile storage battery to provide the current required for starting the automobile. In this process, the user needs to correctly connect the clip assembly (positive clip and negative clip) of the emergency starting power supply to the corresponding polarity terminal of the automobile storage battery.

[0003] However, since the clip assembly of the emergency starting power supply includes a positive clip and a negative clip, in actual operation, the user may connect the clip assembly of the emergency starting power supply with the polarity terminal of the automobile storage battery in reverse due to unclear identification or operation error, and thus the emergency starting fails, and the internal circuit elements of the automobile may be damaged, and even a safety hazard problem may be caused. SUMMARY

[0004] The present application provides a reverse connection prevention device and method, and an emergency starting power supply device, which can solve at least one of the above technical problems.

[0005] In a first aspect, the present application provides a reverse connection prevention device, which includes a clip assembly and a control unit, the control unit is provided with a piezoelectric ceramic assembly, the clip assembly is configured to be connected with an automobile storage battery, the clip assembly is electrically connected to the control unit, and the piezoelectric ceramic assembly generates a corresponding deformation signal according to the connection state of the clip assembly and the automobile storage battery.

[0006] The control unit determines the connection state of the clip assembly and the automobile storage battery according to the deformation signal of the piezoelectric ceramic assembly. If the clip assembly is connected to the automobile storage battery in the correct polarity, the control unit controls the emergency starting power supply to charge the automobile storage battery. If the clip assembly is connected to the automobile storage battery in the reverse polarity, the control unit controls the emergency starting power supply to stop charging the automobile storage battery.

[0007] In some embodiments, the piezoelectric ceramic assembly includes a piezoelectric ceramic element and a travel switch, and the piezoelectric ceramic element and the travel switch are both electrically connected to the control unit.

[0008] If the clip assembly is connected to the automobile storage battery in the correct polarity, the piezoelectric ceramic element is elongated and deformed to trigger the travel switch to be in a conduction state, and the control unit controls the emergency starting power supply to charge the automobile storage battery according to the conduction state of the travel switch.

[0009] If the clip assembly is reversely connected with the automobile storage battery, the travel switch is in the off state, and the control unit controls the emergency starting power supply to stop charging the automobile storage battery according to the off state of the travel switch.

[0010] In some embodiments, the control unit is further provided with a control switch configured to control the charging state of the automobile storage battery and the emergency starting power supply.

[0011] If the travel switch is in the on state, the control unit controls the control switch to be in the on state.

[0012] If the travel switch is in the off state, the control unit controls the control switch to be in the off state.

[0013] In some embodiments, the control unit is further provided with the power amplification circuit connected to the piezoelectric ceramic element.

[0014] If the clip assembly is connected with the automobile storage battery in the positive direction, the power amplification circuit amplifies the input voltage for exciting the piezoelectric ceramic element to increase the elongation deformation degree of the piezoelectric ceramic element.

[0015] In some embodiments, the power amplification circuit comprises a comparator, a converter and a starting switch unit.

[0016] The positive input end of the comparator is connected to the clip assembly, the negative input end of the comparator is connected to the output end of the converter, the output end of the comparator is connected to the starting switch unit, and the starting switch unit is connected to the piezoelectric ceramic element.

[0017] In some embodiments, the starting switch unit is an N-type mos tube, the gate of the N-type mos tube is connected to the output end of the comparator, the source of the N-type mos tube is connected to the piezoelectric ceramic element, and the drain of the N-type mos tube is connected to the positive voltage.

[0018] In some embodiments, the anti-reverse connection device further comprises a buzzer unit comprising a buzzer and a first controllable switch, the buzzer being connected to the first controllable switch; the first controllable switch being connected to the control unit and being controlled by the control unit.

[0019] In some embodiments, the anti-reverse connection device further comprises a first indicator light unit comprising a first indicator light and a second controllable switch, the first indicator light being connected to the second controllable switch; the second controllable switch being connected to the control unit and being controlled by the control unit.

[0020] And / or, the reverse connection prevention device further comprises a second indicator light unit, the second indicator light unit comprises a second indicator light and a third controllable switch, the second indicator light is connected with the third controllable switch; the third controllable switch is connected with the control unit and is controlled by the control unit.

[0021] In the second aspect, the embodiments of the present application provide a reverse connection prevention method, applied to the reverse connection prevention device in any of the above embodiments, the control unit is further provided with a control switch, the control switch is configured to control the charging state of the automobile storage battery and the emergency starting power supply; the method comprises:

[0022] Obtaining a deformation signal generated by the piezoelectric ceramic assembly;

[0023] Determining the connection state of the clip assembly and the automobile storage battery based on the deformation signal;

[0024] If the clip assembly is connected to the automobile storage battery in a correct way, the control switch is controlled to be closed;

[0025] If the clip assembly is connected to the automobile storage battery in a reverse way, the control switch is controlled to be opened.

[0026] In the second aspect, the embodiments of the present application provide an emergency starting power supply device, the emergency starting power supply device comprises the reverse connection prevention device in any of the above embodiments and an emergency starting power supply, the control unit is further provided with a first connection terminal; the emergency starting power supply is provided with a second connection terminal, the second connection terminal is configured to be plugged with the first connection terminal.

[0027] The anti-reverse connection device, method and emergency starting power supply device provided by the embodiment of the application, the anti-reverse connection device comprises a clamp assembly and a control unit, the control unit is provided with a piezoelectric ceramic assembly, the clamp assembly is configured to be connected with an automobile storage battery, the clamp assembly is electrically connected to the control unit, and the piezoelectric ceramic assembly generates a corresponding deformation signal according to the connection state of the clamp assembly and the automobile storage battery; wherein the control unit determines the connection state of the clamp assembly and the automobile storage battery according to the deformation signal of the piezoelectric ceramic assembly, if the clamp assembly is connected with the automobile storage battery in a positive way, the control unit controls the emergency starting power supply to charge the automobile storage battery, and if the clamp assembly is connected with the automobile storage battery in a reverse way, the control unit controls the emergency starting power supply to stop charging the automobile storage battery. In this way, the control unit judges whether the clamp assembly is correctly connected according to the deformation signal output by the piezoelectric ceramic assembly, and controls whether the emergency starting power supply charges the automobile storage battery according to the judgment. In the case that the clamp assembly is connected in a positive way, the emergency starting power supply normally supplies power, and in the case that the clamp assembly is connected in a reverse way, the emergency starting power supply rapidly cuts off the power output, effectively prevents the reverse flow of current caused by the reverse polarity, avoids damaging the automobile electrical system and the emergency starting power supply itself, and significantly improves the safety and reliability of use. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0029] Figure 1 The structural schematic diagram of the anti-reverse connection device provided by the embodiment of the application.

[0030] Figure 2 The structural schematic diagram of the power amplification circuit provided by the embodiment of the application. Figure 1 The structural schematic diagram of the anti-reverse connection device provided by the embodiment of the application.

[0031] Figure 3 The structural schematic diagram of the power amplification circuit provided by the embodiment of the application.

[0032] Figure 4 The circuit diagram of the buzzer unit of the anti-reverse connection device provided by the embodiment of the application.

[0033] Figure 5 The circuit diagram of the first indicator light unit of the anti-reverse connection device provided by the embodiment of the application.

[0034] Figure 6The circuit diagram of the second indicator light unit of the reverse connection prevention device provided in the embodiment of the present application.

[0035] Figure 7 The circuit diagram of the control switch of the reverse connection prevention device provided in the embodiment of the present application.

[0036] Figure 8 The flow chart of the reverse connection prevention method provided in the embodiment of the present application.

[0037] Brief Description of the Drawings

[0038] 10, reverse connection prevention device; 100, clip assembly; 110, positive electrode clip; 120, negative electrode clip; 200, control unit; 210, first connection terminal; 300, piezoelectric ceramic assembly; 310, piezoelectric ceramic element; 320, travel switch; U103, control switch; 500, power amplification circuit; OP467, comparator; 510, converter; IRF840, start switch unit; C2, filter capacitor; BUZZER100, buzzer; Q101, first controllable switch; D_A100, first indicator light; Q102, second controllable switch; D_A101, second indicator light; Q103, third controllable switch.

[0039] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in combination with the accompanying drawings.

[0041] The following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for the purpose of description and should not be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in specific cases. In addition, in the description of the present application, unless otherwise specified, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents a "or" relationship between the associated objects before and after it.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in the description herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] In the actual use of the emergency starting power supply of the automobile, it is usually necessary to connect the clip assembly with the automobile storage battery to provide the current required for starting the automobile. In this process, the user needs to correctly connect the clip assembly (positive clip and negative clip) of the emergency starting power supply to the corresponding polarity terminal of the automobile storage battery. However, since the clip assembly of the emergency starting power supply includes a positive clip and a negative clip, in actual operation, the user may connect the clip assembly of the emergency starting power supply with the polarity terminal of the automobile storage battery in reverse due to unclear identification or operation error, and thus the emergency starting fails, and the internal circuit elements of the automobile may be damaged, and even a safety hazard problem may be caused.

[0045] In view of this, please refer to Figure 1 and Figure 2 The embodiments of the present application provide a reverse connection prevention device 10, which is applied to control the charging state of the emergency starting power supply to the automobile storage battery.

[0046] The reverse connection prevention device 10 includes a clip assembly 100 and a control unit 200, the control unit 200 is provided with a piezoelectric ceramic assembly 300, the clip assembly 100 is configured to be connected with the automobile storage battery, the clip assembly 100 is electrically connected to the control unit 200, and the piezoelectric ceramic assembly 300 generates a corresponding deformation signal according to the connection state of the clip assembly 100 and the automobile storage battery.

[0047] The control unit 200 determines the connection state of the clip assembly 100 and the automobile storage battery according to the deformation signal of the piezoelectric ceramic assembly 300, if the clip assembly 100 is connected with the automobile storage battery in positive, the control unit 200 controls the emergency starting power supply to charge the automobile storage battery, and if the clip assembly 100 is connected with the automobile storage battery in reverse, the control unit 200 controls the emergency starting power supply to stop charging the automobile storage battery.

[0048] Thus, the control unit 200 determines whether the clip assembly 100 is correctly connected according to the deformation signal output by the piezoelectric ceramic assembly 300, and controls whether the emergency starting power supply charges the automobile storage battery accordingly. In the case of correct connection of the clip assembly 100, the emergency starting power supply normally supplies power; and in the case of reverse connection of the clip assembly 100, the emergency starting power supply quickly cuts off the power output, effectively preventing reverse current flow caused by reverse polarity, avoiding damage to the automobile electrical system and the emergency starting power supply itself, and significantly improving the safety and reliability of use.

[0049] In addition, the reverse connection prevention device 10 can realize real-time sensing of the connection state between the clip assembly 100 and the automobile storage battery by setting the piezoelectric ceramic assembly 300, and outputting corresponding electrical signals according to the mechanical deformation generated during clamping, thereby realizing automatic recognition of the connection polarity. This detection method based on physical contact deformation has fast response speed and high sensitivity, and has simple structure and controllable cost, and is suitable for large-scale popularization and application.

[0050] Moreover, the reverse connection prevention device 10 does not need to rely on complex electronic recognition circuits or additional sensor elements, and can complete the connection state judgment only through the piezoelectric ceramic assembly 300, thereby simplifying the overall control logic and improving the stability and anti-interference ability of the reverse connection prevention device 10. At the same time, the reverse connection prevention device 10 can be adapted to different specifications of emergency starting power supplies and various types of automobile storage batteries, and has good universality and compatibility.

[0051] In some embodiments, the piezoelectric ceramic assembly 300 includes a piezoelectric ceramic element 310 and a travel switch 320, both of which are electrically connected to the control unit 200;

[0052] If the clip assembly 100 is connected to the automobile storage battery in the correct way, the piezoelectric ceramic element 310 is elongated and deformed and triggers the travel switch 320 to be in a conductive state, and the control unit 200 controls the emergency starting power supply to charge the automobile storage battery according to the conductive state of the travel switch 320;

[0053] If the clip assembly 100 is connected to the automobile storage battery in the reverse way, the travel switch 320 is in a disconnected state, and the control unit 200 controls the emergency starting power supply to stop charging the automobile storage battery according to the disconnected state of the travel switch 320.

[0054] Specifically, when the clip assembly 100 is correctly connected to the automobile battery terminals (i.e., the positive clip 110 is connected to the positive terminal, and the negative clip 120 is connected to the negative terminal), the piezoelectric ceramic element 310 is subjected to uniform and expected pressure, and elongation deformation occurs. When the elongation deformation reaches a set threshold, the travel switch 320 is triggered to switch from the initial off state to the on state, thereby sending a normal connection electrical signal to the control unit 200. After receiving the on signal of the travel switch 320, the control unit 200 confirms that the clip assembly 100 is in a positive connection state, and allows the emergency starting power supply to supply power to the automobile battery, starting the charging process.

[0055] Conversely, if the clip assembly 100 is in a reverse connection state with the automobile battery (i.e., the positive clip 110 is connected to the negative terminal or the negative clip 120 is connected to the positive terminal), the piezoelectric ceramic element 310 cannot produce the expected elongation deformation, resulting in the travel switch 320 failing to be triggered and remaining in the off state. The control unit 200 detects the off signal of the travel switch 320, determines that the clip assembly 100 is connected with incorrect polarity, and immediately controls the emergency starting power supply to stop outputting current, cutting off the charging path, to prevent electrical damage and safety accidents caused by reverse connection.

[0056] The reverse connection prevention device 10 realizes physical signal conversion and circuit feedback mechanism of the connection state of the clip assembly 100 through the cooperation of the piezoelectric ceramic element 310 and the travel switch 320, and has the advantages of compact structure, rapid response, accurate judgment, etc. At the same time, the reverse connection prevention device 10 does not need to introduce a complex electronic recognition module, which reduces the complexity and manufacturing cost of the reverse connection prevention device 10, and improves the stability and practicality of the reverse connection prevention device 10.

[0057] Please refer to Figure 1 , Figure 2 and Figure 7 In some embodiments, the control unit 200 is also provided with a control switch U103 configured to control the charging state of the automobile battery and the emergency starting power supply; the on-off action of the control switch U103 is dynamically controlled by the control unit 200 according to the working state of the travel switch 320, thereby realizing accurate management of the charging process.

[0058] If the travel switch 320 is in the on state, the control unit 200 controls the control switch U103 to be in the on state. If the travel switch 320 is in the off state, the control unit 200 controls the control switch U103 to be in the off state.

[0059] When the clip assembly 100 is correctly connected to the automobile battery terminals (i.e., the positive clip 110 is connected to the positive terminal and the negative clip 120 is connected to the negative terminal), the piezoelectric ceramic element 310 is elongated under the action of the positive voltage and triggers the travel switch 320 associated therewith to enter the conduction state. After the control unit 200 detects the conduction signal of the travel switch 320, it is determined that the clip assembly 100 is in the positive connection state, and the control switch U103 is controlled to enter the conduction state synchronously, thereby turning on the current path between the emergency starting power supply and the automobile battery, enabling the emergency starting power supply to normally supply power to the automobile battery, and completing the starting or charging operation.

[0060] On the contrary, if the clip assembly 100 and the automobile battery are in the reverse polarity connection state (for example, the positive clip 110 is connected to the negative terminal or the negative clip 120 is connected to the positive terminal), the piezoelectric ceramic element 310 does not deform or is compressed, the travel switch 320 is not triggered, and remains in the open state. The control unit 200 determines that the clip assembly 100 is connected incorrectly according to the open signal of the travel switch 320, and controls the control switch U103 to enter the open state, thereby cutting off the charging path between the emergency starting power supply and the automobile battery, preventing reverse current from flowing, and avoiding damage to the vehicle electrical system or the internal circuit of the emergency starting power supply.

[0061] In this way, by setting the control switch U103 in the control unit 200 and controlling it according to the state of the travel switch 320, intelligent control and safety protection of the charging path are achieved. The control mechanism is simple in structure, fast in response, and clear in logic, which not only improves the stability and reliability of the reverse connection prevention device 10, but also effectively improves the safety and intelligent level of the emergency starting power supply in use.

[0062] In some embodiments, the control switch U103 uses an electromagnetic relay as an execution element for controlling the charging path between the emergency starting power supply and the automobile battery. The electromagnetic relay has high current carrying capacity and can stably turn on and off large current, which is suitable for the application scenario of instantaneous high current output in the emergency starting process.

[0063] Unlike the travel switch 320, the travel switch 320 is mainly used to detect the connection state between the clip assembly 100 and the automobile battery, and its role is to feedback whether the clamping action is in place and whether the polarity is correct. Since the travel switch 320 only needs to transmit a control signal and does not need to carry a large current of the main circuit, its design is not suitable for directly passing a large current. If the travel switch 320 is used for the main circuit on-off, the contact may be burned or misoperation due to overload, affecting the stability and safety of the reverse connection prevention device 10.

[0064] In this way, the travel switch 320 is only used to provide a connection state signal to the control unit 200, and the on-off of the main circuit is completed by the electromagnetic relay with large current carrying capacity. This division of labor design not only improves the reliability of the anti-reverse connection device 10, but also effectively protects the safety of the control circuit. By cooperatively arranging the travel switch 320 and the electromagnetic relay in the control unit 200, layered control and multiple protection of the charging process are realized, thereby improving the working efficiency and safety level of the entire anti-reverse connection device 10.

[0065] Referring to Figure 3 In some embodiments, the control unit 200 is also provided with the power amplification circuit 500 connected to the piezoelectric ceramic element 310. If the clip assembly 100 is connected to the automobile storage battery in the positive direction, the power amplification circuit 500 amplifies the input voltage exciting the piezoelectric ceramic element 310 to increase the elongation deformation degree of the piezoelectric ceramic element 310.

[0066] Specifically, the power amplification circuit 500 is connected to the input end of the piezoelectric ceramic element 310 for power amplification processing of the driving voltage applied to the piezoelectric ceramic element 310. The introduction of the power amplification circuit 500 aims to enhance the energy output of the driving signal, thereby improving the response performance and deformation amplitude of the piezoelectric ceramic element 310.

[0067] When the clip assembly 100 is correctly connected to the automobile storage battery terminals (i.e. the positive clip 110 is connected to the positive terminal and the negative clip 120 is connected to the negative terminal), the clamping action causes the piezoelectric ceramic element 310 to be uniformly pressed and receive the driving voltage provided by the control unit 200. At this time, the power amplification circuit 500 is started to power amplify the input voltage, thereby increasing the effective voltage value applied across the piezoelectric ceramic element 310. Under the action of enhanced voltage, the piezoelectric ceramic element 310 produces a greater degree of elongation deformation, further pushing the travel switch 320 to act, so that it more reliably enters the conduction state.

[0068] In this way, through the enhancing effect of the power amplification circuit 500 on the driving voltage, the deformation sensitivity and triggering stability of the piezoelectric ceramic element 310 are significantly improved. This not only improves the accuracy of the connection state detection of the clip assembly 100, but also helps to ensure the stable triggering of the travel switch 320 in the case of small clamping force or slight unevenness of the contact surface, avoiding the occurrence of false or missed judgment due to weak signal.

[0069] In some embodiments, the power amplification circuit 500 comprises a comparator OP467, a converter 510 and a starting switch unit IRF840; the positive input terminal of the comparator OP467 is connected to the clip assembly 100, the negative input terminal of the comparator OP467 is connected to the output terminal of the converter 510, the output terminal of the comparator OP467 is connected to the starting switch unit IRF840, and the starting switch unit IRF840 is connected to the piezoelectric ceramic element 310.

[0070] Specifically, the positive input terminal of the comparator OP467 is connected to the clip assembly 100 for receiving the induced voltage signal generated by the clip assembly 100 when the clip assembly 100 clamps the terminal of the automobile storage battery; the negative input terminal of the comparator OP467 is connected to the output terminal of the converter 510 for receiving the reference voltage signal corresponding to the set threshold value; and the output terminal of the comparator OP467 is connected to the control terminal of the starting switch unit IRF840 for sending the on or off instruction to the starting switch unit IRF840 according to the comparison result of the input signal. The starting switch unit IRF840 is arranged between the power amplification circuit 500 and the piezoelectric ceramic element 310, and the output terminal of the starting switch unit IRF840 is connected to the piezoelectric ceramic element 310 for controlling whether to apply the amplified driving voltage to the piezoelectric ceramic element 310 according to the output signal of the comparator OP467.

[0071] When the clip assembly 100 correctly clamps the terminal of the automobile storage battery, the clip assembly 100 generates the corresponding electrical signal and transmits the electrical signal to the positive input terminal of the comparator OP467. The comparator OP467 compares the signal with the reference voltage provided by the converter 510. If the signal generated by the clip assembly 100 is higher than the reference voltage, it indicates that the clamping state is normal and the polarity is correct, the comparator OP467 outputs a high-level signal to trigger the starting switch unit IRF840 to turn on, so that the enhanced voltage output by the power amplification circuit 500 acts on the piezoelectric ceramic element 310, prompting the piezoelectric ceramic element 310 to generate a greater degree of elongation deformation, thereby reliably triggering the on state of the travel switch 320.

[0072] On the contrary, if the clip assembly 100 is in reverse connection, the electrical signal output by the clip assembly 100 is lower than the reference voltage, the comparator OP467 outputs a low-level signal, and the starting switch unit IRF840 remains in the off state, preventing the power amplification circuit 500 from applying the high-voltage signal to the piezoelectric ceramic element 310, avoiding the occurrence of misoperation, and protecting the stability and safety of the circuit system.

[0073] In some embodiments, the starting switch unit IRF840 is an N-type mos tube, the gate of the N-type mos tube is connected to the output terminal of the converter 510, the source of the N-type mos tube is connected to the piezoelectric ceramic element 310, and the drain of the N-type mos tube is connected to the positive voltage.

[0074] Specifically, the gate of the N-type MOS tube is connected to the output end of the comparator OP467 for receiving the control signal output by the comparator OP467; the source of the N-type MOS tube is connected to one end of the piezoelectric ceramic element 310 as the output end of the driving voltage; and the drain of the N-type MOS tube is connected to the positive voltage source to provide the high voltage driving energy required for the piezoelectric ceramic element 310 to work.

[0075] During the operation of the device, when the clamp assembly 100 correctly clamps the terminal of the automobile storage battery, the clamp assembly 100 generates a corresponding induced voltage signal and inputs the signal to the positive input end of the comparator OP467. The comparator OP467 compares the signal with the reference voltage input to the negative input end. If the induced voltage is higher than the reference voltage, the comparator OP467 outputs a high-level signal, which is applied to the gate of the N-type MOS tube to make the MOS tube conductive. At this time, the positive voltage flows from the drain to the source of the MOS tube, and is amplified by the power amplification circuit 500 and then applied to the piezoelectric ceramic element 310, so as to make the piezoelectric ceramic element 310 produce elongation deformation, thereby triggering the connected travel switch 320 to enter the conductive state and realizing the safe access of the emergency starting power supply.

[0076] Conversely, when the clamp assembly 100 is in the reverse connection state, the induced voltage output by the clamp assembly 100 is lower than the reference voltage, the comparator OP467 outputs a low-level signal, and the N-type MOS tube is in the off state, thereby cutting off the path between the positive voltage and the piezoelectric ceramic element 310, preventing misoperation from occurring, protecting the circuit system from abnormal current damage, and improving the safety and stability of the operation of the device.

[0077] In this way, the N-type MOS tube is used as the starting switch unit IRF840, which not only has the characteristics of fast response speed, low conduction voltage drop and high control precision, but also is directly connected with the comparator OP467, simplifies the control logic, and improves the integration and reliability of the overall circuit. The structure design is reasonable, the control mode is efficient, and it is helpful to enhance the adaptability and practical performance of the anti-reverse connection device 10 in complex use environment.

[0078] In some embodiments, the power amplification circuit 500 further comprises a filter capacitor C2 connected to the positive input end of the comparator OP467 and the output end of the comparator OP467.

[0079] Specifically, one end of the filter capacitor C2 is connected to the positive input terminal of the comparator OP467 for receiving the induced voltage signal from the clamp assembly 100; the other end of the filter capacitor C2 is connected to the output terminal of the comparator OP467 to form an RC filter network structure. This structure can effectively suppress high-frequency noise interference in the input signal during the operation of the comparator OP467, prevent false judgment caused by transient fluctuations or external electromagnetic interference, and thus improve the accuracy and reliability of the detection process of the entire anti-reverse connection device 10.

[0080] In addition, the filter capacitor C2 also has a certain signal delay and stabilizing effect, which can smooth the trend of the input signal in the initial stage of the clamp assembly 100 contacting the terminal of the automobile storage battery, avoid frequent switching of the output state of the comparator OP467 due to signal jump, and thus improve the stability of the operation of the starting switch unit IRF840 (such as N-type MOS tube) and prolong its service life.

[0081] Thus, by introducing the filter capacitor C2, the power amplifier circuit 500 can still maintain good anti-interference ability and working consistency in a complex electromagnetic environment, providing a strong guarantee for the accurate driving of the piezoelectric ceramic element 310 and further enhancing the safety, stability and practicality of the anti-reverse connection device 10 in actual application.

[0082] Please refer to Figure 4 to Figure 6 In some embodiments, the anti-reverse connection device 10 further comprises a buzzer unit, the buzzer unit comprising a buzzer BUZZER100 and a first controllable switch Q101, the buzzer BUZZER100 being connected to the first controllable switch Q101; the first controllable switch Q101 being connected to the control unit 200 and being controlled by the control unit 200.

[0083] Specifically, the first controllable switch Q101 is a triode, the base of the first controllable switch Q101 being connected to the control unit 200, the collector of the first controllable switch Q101 being connected to the buzzer BUZZER100, and the emitter of the first controllable switch Q101 being grounded. When the first controllable switch Q101 is turned on, the buzzer BUZZER100 is started; when the first controllable switch Q101 is turned off, the buzzer BUZZER100 is turned off.

[0084] Further, the anti-reverse connection device 10 further comprises a first indicator light D_A100 unit, the first indicator light D_A100 unit comprising a first indicator light D_A100 and a second controllable switch Q102, the first indicator light D_A100 being connected to the second controllable switch Q102; the second controllable switch Q102 being connected to the control unit 200 and being controlled by the control unit 200.

[0085] Specifically, the first indicator light D_A100 is an LED light, and the light-emitting color is green. The second controllable switch Q102 is a triode, the base of the second controllable switch Q102 is connected with the control unit 200, the collector of the second controllable switch Q102 is connected with the first indicator light D_A100, and the emitter of the second controllable switch Q102 is grounded. When the second controllable switch Q102 is turned on, the first indicator light D_A100 is started; when the second controllable switch Q102 is turned off, the first indicator light D_A100 is turned off.

[0086] Further, the anti-reverse connection device 10 further comprises a second indicator light D_A101 unit, the second indicator light D_A101 unit comprises a second indicator light D_A101 and a third controllable switch Q103, the second indicator light D_A101 is connected with the third controllable switch Q103; the third controllable switch Q103 is connected with the control unit 200 and is controlled by the control unit 200.

[0087] Specifically, the second indicator light D_A101 is an LED light, and the light-emitting color is red. The third controllable switch Q103 is a triode, the base of the third controllable switch Q103 is connected with the control unit 200, the collector of the third controllable switch Q103 is connected with the second indicator light D_A101, and the emitter of the third controllable switch Q103 is grounded. When the third controllable switch Q103 is turned on, the second indicator light D_A101 is started; when the third controllable switch Q103 is turned off, the second indicator light D_A101 is turned off.

[0088] In the embodiment of the application, the control logic of the buzzer BUZZER100, the first indicator light D_A100 and the second indicator light D_A101 is as follows:

[0089] 1. When the clip assembly 100 and the positive and negative poles of the automobile storage battery are connected correctly, the control unit 200 controls the buzzer BUZZER100 to always sound, and controls the first indicator light D_A100 (green light) to always be on, so that the emergency starting power supply can be used for emergency starting.

[0090] 2. When the clip and the positive and negative poles of the automobile storage battery are connected reversely, the control unit 200 controls the buzzer BUZZER100 to sound at a frequency of 0.5s, and controls the second indicator light D_A101 (red light) to flash, so that the emergency starting power supply cannot be used for emergency starting.

[0091] Please refer to Figure 1 to Figure 8The embodiment of the application also provides a reverse connection prevention method, which is applied to the reverse connection prevention device 10 in any of the above embodiments. The control unit 200 is further provided with a control switch U103, which is configured to control the charging state of the automobile storage battery and the emergency starting power supply. The reverse connection prevention method comprises steps 100, 200, 300 and 400.

[0092] Step 100: obtaining a generated deformation signal of the piezoelectric ceramic assembly 300.

[0093] The piezoelectric ceramic assembly 300 generates a corresponding deformation signal in response to the clamping action between the clip assembly 100 and the automobile storage battery. Specifically, when the clip assembly 100 clamps the terminal of the automobile storage battery, the piezoelectric ceramic element 310 mechanically deforms under the action of a positive voltage and converts the physical deformation into a corresponding voltage signal output. The control unit 200 receives the deformation signal generated by the piezoelectric ceramic assembly 300 in real time through the signal acquisition circuit and performs filtering, amplification and analog-to-digital conversion processing on the signal to obtain effective data that can be used to determine the connection state of the clip assembly 100.

[0094] Further, the deformation signals output by the piezoelectric ceramic assembly 300 under different connection states have obvious differences. For example, when the clip assembly 100 is correctly connected to the polarity terminal of the corresponding automobile storage battery, the piezoelectric ceramic element 310 is subjected to uniform pressure, generates stable elongation deformation and outputs a voltage signal that meets the preset range; and in the case of polarity error of the clip assembly 100, the piezoelectric ceramic assembly 300 does not generate deformation or even reversely compresses, and the output signal deviates from the normal threshold range. The control unit 200 can accurately identify whether the clip assembly 100 is effectively connected according to the received signal characteristics and in combination with the preset judgment logic, thereby providing a reliable basis for subsequent control operations.

[0095] Step 200: determining the connection state of the clip assembly 100 and the automobile storage battery based on the deformation signal.

[0096] The control unit 200 analyzes and processes the received deformation signal and identifies whether the clip assembly 100 is correctly connected to the corresponding polarity terminal of the automobile storage battery in combination with the preset judgment threshold.

[0097] Specifically, the control unit 200 is internally provided with a signal processing module, which performs analog-to-digital conversion and feature extraction on the deformation signal output by the piezoelectric ceramic assembly 300, obtains key parameters such as voltage amplitude, waveform characteristics and change trend and the like. Subsequently, the signal processing module compares the obtained signal parameters with the preset reference threshold to determine whether the clamping state of the clip assembly 100 meets the positive connection condition.

[0098] If the deformation signal output by the piezoelectric ceramic assembly 300 is within the normal threshold range, it indicates that the clamp assembly 100 is subjected to uniform and stable clamping force, the clamping position is correct, and the polarity connection of the clamp assembly 100 and the automobile storage battery is matched. The control unit 200 determines that it is a "positive connection" state accordingly. Conversely, if the deformation signal is lower than or significantly deviates from the set threshold, it indicates that the clamp assembly 100 is poorly clamped or there is a polarity misconnection. The control unit 200 determines that it is a "reverse connection" state.

[0099] In this embodiment, the control unit 200 uses multi-level judgment logic. Not only is the amplitude of the deformation signal used for judgment, but also the duration and rate of change of the signal are combined for comprehensive analysis, thereby effectively avoiding misjudgment caused by transient interference or temporary poor contact, and improving the accuracy and reliability of the judgment result.

[0100] Step 300: If the clamp assembly 100 is connected to the automobile storage battery in a positive manner, control the control switch U103 to be closed.

[0101] When the control unit 200 confirms that the clamp assembly 100 and the automobile storage battery are in a correct connection state (i.e., a positive connection state), it immediately triggers a control signal to drive the control switch U103 to perform a closing action.

[0102] Specifically, the control unit 200 is internally provided with a control logic module. After receiving the positive connection judgment result corresponding to the deformation signal, the control logic module sends a closing instruction signal to the control switch U103. The control switch U103 responds to the instruction signal and switches from an open state to a conductive state, thereby establishing a charging circuit between the emergency starting power supply and the automobile storage battery, allowing the emergency starting power supply to normally supply power to the automobile storage battery, completing the charging or starting operation.

[0103] In this embodiment, the control switch U103 uses an electronic relay or a solid-state switching element with high reliability, which has fast response capability and good load bearing capacity, and can complete the on-off operation within milliseconds, ensuring the safety and stability of system operation. At the same time, the control unit 200 is also configured with a delay control mechanism, which performs the closing operation after confirming that the positive connection state is stable for a certain period of time, further preventing unintended charging behavior caused by accidental touch or temporary contact.

[0104] Through this step, the automatic charging path opening function under the premise of correct connection of the clamp assembly 100 is realized, effectively avoiding the risk of circuit damage caused by reverse connection, and improving the safety and intelligent level of the anti-reverse connection device 10 in actual use.

[0105] Step 400: If the clamp assembly 100 is connected to the automobile storage battery in a reverse manner, control the control switch U103 to be opened.

[0106] When the control unit 200 confirms that the clip assembly 100 is connected to the automobile storage battery in reverse polarity (i.e. in reverse connection state), the control unit 200 immediately executes a protective control strategy, sends a disconnection instruction signal to the control switch U103 to ensure that the charging path between the emergency starting power supply and the automobile storage battery is in a disconnected state.

[0107] Specifically, when the control unit 200 identifies that the deformation signal output by the piezoelectric ceramic assembly 300 is below the set threshold value or an abnormal distribution pattern occurs, it is determined that the clip assembly 100 is not correctly connected to the corresponding polarity terminal of the automobile storage battery. At this time, the control logic module of the control unit 200 responds quickly and outputs a high or low control signal (depending on the circuit design) to drive the control switch U103 to switch from a closed state to a disconnected state, thereby effectively cutting off the current path between the emergency starting power supply and the automobile storage battery, preventing short circuits, component damage or safety hazards caused by reverse connection.

[0108] Further, in the present embodiment, the control unit 200 is also configured with a reverse connection state recording mechanism, which can store information of the present reverse connection event, so that the relevant data can be read through the diagnostic interface for subsequent fault analysis or user operation guidance. At the same time, this step can also be linked with other safety mechanisms, such as triggering an alarm prompt, lighting an indicator light or issuing a voice reminder, to guide the user to correct the connection error in time.

[0109] Through this step, the automatic power-off protection function in the case of reverse connection of the clip assembly 100 is realized, effectively improving the safety performance and intelligent level of the reverse connection prevention device 10, and avoiding equipment damage and personal risk caused by misoperation.

[0110] In some embodiments, step 100 includes step 110 and step 120.

[0111] Step 110: When the clip assembly 100 is connected to the automobile storage battery in a positive direction, the piezoelectric ceramic element 310 triggers the travel switch 320 due to elongation and sends a positive connection signal to the control unit 200.

[0112] When the clip assembly 100 is connected to the automobile storage battery in a positive direction, the piezoelectric ceramic element 310 triggers the travel switch 320 due to elongation and sends a positive connection signal to the control unit 200, and at the same time, the piezoelectric ceramic element 310 generates an electrical signal under the action of mechanical stress and also undergoes physical deformation, such as elongation along the polarization direction.

[0113] When the user correctly clamps the positive clamp 110 and the negative clamp 120 of the clamp assembly 100 to the corresponding terminals of the automobile storage battery, the clamping action applies pressure to the piezoelectric ceramic element 310 through the conduction structure, causing it to produce directional elongation deformation. When the elongation reaches a set threshold, the travel switch 320 arranged adjacent is triggered, and the travel switch 320 switches the working state in response to the physical displacement change and generates a corresponding electrical signal as a positive connection signal, which is transmitted to the control unit 200.

[0114] The positive connection signal not only indicates that the clamp assembly 100 has been correctly connected to the automobile storage battery, but also reflects whether the clamping force is stable enough. The control unit 200 determines whether the current connection state meets the safe charging condition according to the signal, providing a basis for the control logic in the subsequent steps.

[0115] The present embodiment realizes the dual detection function of the connection polarity and the clamping state of the clamp assembly 100 by combining the mechanical properties of the piezoelectric ceramic element 310 and the action mechanism of the travel switch 320, improving the judgment accuracy of the anti-reverse connection method and the reliability of the system response.

[0116] Step 120: When the clamp assembly 100 is reversely connected to the automobile storage battery, the piezoelectric ceramic element 310 does not deform or does not trigger the travel switch 320 due to shortening, and sends a reverse connection signal to the control unit 200.

[0117] When the clamp assembly 100 is reversely connected to the automobile storage battery, the piezoelectric ceramic element 310 does not deform or does not trigger the travel switch 320 due to shortening, and sends a reverse connection signal to the control unit 200. During the process, if the user incorrectly connects the positive clamp 110 of the clamp assembly 100 to the negative terminal of the automobile storage battery or connects the negative clamp 120 to the positive terminal, i.e., forms a reverse connection state, the direction of the force applied by the clamp assembly 100 to the piezoelectric ceramic assembly 300 or the stress distribution changes.

[0118] At this time, the piezoelectric ceramic element 310 arranged in the clamping structure does not undergo the expected elongation deformation due to the absence of positive pressure along the polarization direction or the presence of force in the opposite direction, or even undergoes contraction deformation. The deformation amount cannot reach the action threshold of the travel switch 320, so the travel switch 320 remains in the open state and does not generate a corresponding electrical signal output.

[0119] The control unit 200 identifies that the clip assembly 100 is not clamped correctly or there is a polarity misconnection by monitoring the state change of the travel switch 320 and the output signal of the piezoelectric ceramic element 310 itself, and generates a reverse connection signal accordingly. The reverse connection signal is used to indicate that the current clip assembly 100 is in a reverse connection state, and the control system then executes a protection mechanism to prevent the control switch U103 from malfunctioning, ensuring that the emergency starting power supply does not supply power to the automobile storage battery, thereby avoiding circuit damage or safety accidents caused by reverse connection.

[0120] Through this step, automatic identification and feedback function in the reverse connection state of the clip assembly 100 is realized, the detection accuracy and system safety of the reverse connection prevention method are enhanced, and a reliable basis is provided for the subsequent control strategy.

[0121] The embodiment of the application also provides an emergency starting power supply device, and the reverse connection prevention device 10 is provided with a first connection terminal 210, which is electrically connected with the control unit 200 and serves as an electrical interface between the reverse connection prevention device 10 and the emergency starting power supply. The emergency starting power supply is provided with a second connection terminal, which is arranged on the shell of the emergency starting power supply and is connected with the power supply circuit inside the emergency starting power supply, and is used to provide working power and output current for the reverse connection prevention device 10.

[0122] The first connection terminal 210 and the second connection terminal adopt a pluggable matching structure, so that the reverse connection prevention device 10 can be conveniently physically connected and electrically conducted with the emergency starting power supply. When the two connection terminals are plugged in, the control unit 200, the piezoelectric ceramic assembly 300, the travel switch 320, the starting switch unit IRF840 and other modules can all obtain power supply through the connection structure and perform signal interaction with the main control system of the emergency starting power supply, so as to realize real-time monitoring of the connection state of the clip assembly 100 and intelligent control of the power supply output.

[0123] Further, the first connection terminal 210 and the second connection terminal are provided with a mistaken plugging prevention structure, such as a positioning protrusion or a groove, a polarity locking mechanism and the like, to ensure that the connection direction is correct and avoid poor contact or circuit short circuit problems caused by incorrect plugging. In addition, the connection terminal also has good conductivity and mechanical durability, can withstand frequent plugging operations, and meets the demand of large current instantaneous output in the vehicle starting process.

[0124] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0125] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-reverse connection device, characterized in that, The anti-reverse connection device is applied to control the charging state of the emergency starting power supply to the automobile storage battery, and comprises a clamp assembly and a control unit. The control unit is provided with a piezoelectric ceramic assembly. The clamp assembly is configured to be connected with the automobile storage battery. The clamp assembly is electrically connected to the control unit. The piezoelectric ceramic assembly generates a corresponding deformation signal according to the connection state of the clamp assembly and the automobile storage battery. The control unit determines the connection state of the clamp assembly and the automobile storage battery according to the deformation signal of the piezoelectric ceramic assembly. If the clamp assembly is connected with the automobile storage battery in a normal way, the control unit controls the emergency starting power supply to charge the automobile storage battery. If the clamp assembly is connected with the automobile storage battery in a reverse way, the control unit controls the emergency starting power supply to stop charging the automobile storage battery.

2. The reverse connection prevention device according to claim 1, wherein The piezoelectric ceramic assembly comprises a piezoelectric ceramic element and a travel switch. The piezoelectric ceramic element and the travel switch are both electrically connected to the control unit. If the clamp assembly is connected with the automobile storage battery in a normal way, the piezoelectric ceramic element is elongated and deformed to trigger the travel switch to be in a conduction state. The control unit controls the emergency starting power supply to charge the automobile storage battery according to the conduction state of the travel switch. If the clamp assembly is connected with the automobile storage battery in a reverse way, the travel switch is in a disconnection state. The control unit controls the emergency starting power supply to stop charging the automobile storage battery according to the disconnection state of the travel switch.

3. The reverse connection prevention device according to claim 2, wherein The control unit is further provided with a control switch. The control switch is configured to control the charging state of the automobile storage battery and the emergency starting power supply. If the travel switch is in a conduction state, the control unit controls the control switch to be in a conduction state. If the travel switch is in a disconnection state, the control unit controls the control switch to be in a disconnection state.

4. The reverse connection prevention device according to claim 2, wherein The control unit is further provided with a power amplification circuit. The power amplification circuit is connected to the piezoelectric ceramic element. If the clamp assembly is connected with the automobile storage battery in a normal way, the power amplification circuit amplifies the input voltage to excite the piezoelectric ceramic element to increase the elongation and deformation degree of the piezoelectric ceramic element.

5. The reverse connection prevention device according to claim 4, wherein The power amplification circuit comprises a comparator, a converter and a start switch unit. The positive input end of the comparator is connected to the clamp assembly. The negative input end of the comparator is connected to the output end of the converter. The output end of the comparator is connected to the start switch unit. The start switch unit is connected to the piezoelectric ceramic element.

6. The reverse connection prevention device according to claim 5, wherein The start switch unit is an N-type mos tube. The gate of the N-type mos tube is connected to the output end of the comparator. The source of the N-type mos tube is connected to the piezoelectric ceramic element. The drain of the N-type mos tube is connected to a positive voltage.

7. The reverse-connection prevention device according to claim 1, wherein The anti-reverse connection device further comprises a buzzer unit. The buzzer unit comprises a buzzer and a first controllable switch. The buzzer is connected to the first controllable switch. The first controllable switch is connected to the control unit and is controlled by the control unit.

8. The reverse-connection prevention device according to claim 1, wherein The reverse connection prevention device further comprises a first indicator light unit, the first indicator light unit comprising a first indicator light and a second controllable switch, the first indicator light being connected with the second controllable switch; the second controllable switch being connected with the control unit and being controlled by the control unit; And / or, the reverse connection prevention device further comprises a second indicator light unit, the second indicator light unit comprising a second indicator light and a third controllable switch, the second indicator light being connected with the third controllable switch; the third controllable switch being connected with the control unit and being controlled by the control unit.

9. A reverse connection prevention method characterized by comprising: The control unit of the reverse connection prevention device according to any one of claims 1 to 8 is further provided with a control switch configured to control the charging state of the automotive storage battery and the emergency starting power supply; the method comprises: acquiring a deformation signal generated by the piezoelectric ceramic assembly; determining the connection state of the clip assembly and the automotive storage battery based on the deformation signal; if the clip assembly is connected to the automotive storage battery in a normal manner, controlling the control switch to be closed; if the clip assembly is connected to the automotive storage battery in a reverse manner, controlling the control switch to be opened.

10. An emergency start power supply apparatus characterized by comprising: comprising The reverse connection prevention device according to any one of claims 1 to 8, the control unit being further provided with a first connection terminal; and an emergency starting power supply, the emergency starting power supply being provided with a second connection terminal configured to be plugged with the first connection terminal.

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