Power-off control circuit and device

Abstract

The utility model discloses a power-off control circuit and device, and relates to the technical field of automobile detection, and the power-off control circuit comprises a remote switch module which is used for switching on or switching off according to a received remote control signal; the power-off driving module is respectively connected with the remote switch module, the automobile battery and the automobile cable, and is used for connecting the automobile battery and the automobile cable according to the on state of the remote switch module, or disconnecting the automobile battery and the automobile cable according to the off state of the remote switch module; and the state prompting module is connected with the power-off driving module and is used for carrying out connection prompting or power-off prompting according to the working state of the power-off driving module. When the automobile circuit fault is checked, the checking time of the automobile circuit fault is saved, the technical problem that the checking efficiency of the automobile circuit fault is low is solved, and the checking efficiency of the automobile circuit fault is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile detection technology, and in particular to a power-off control circuit and device. Background Art

[0002] In the related art, when an electric vehicle has a circuit fault, the negative cable of the energy storage battery is usually manually connected and disconnected multiple times to detect the resistance or voltage of the electrical appliances and lines in the circuit to troubleshoot the circuit fault. However, since the energy storage battery is set in the front or rear of the vehicle, it takes a long time to manually connect and disconnect the negative cable of the energy storage battery, resulting in low efficiency in troubleshooting the vehicle circuit fault. Utility Model Content

[0003] The main purpose of this application is to propose a power-off control circuit and device, aiming to solve the technical problem of low efficiency in troubleshooting automobile circuit faults.

[0004] To achieve the above purpose, the power-off control circuit proposed in the present application includes:

[0005] A remote switch module, used to turn on or off according to a received remote control signal;

[0006] A power-off drive module is connected to the remote switch module, the vehicle battery and the vehicle cable respectively, and is used to connect the vehicle battery and the vehicle cable according to the on state of the remote switch module, or to disconnect the vehicle battery and the vehicle cable according to the off state of the remote switch module;

[0007] The status prompt module is connected to the power-off driving module and is used for providing a connection prompt or a power-off prompt according to the working status of the power-off driving module.

[0008] In one embodiment, the power-off control circuit further includes:

[0009] The interface module is connected with the power-off drive module and is used for connecting the vehicle battery and the vehicle cable.

[0010] In one embodiment, the interface module includes:

[0011] The first interface is connected to the power-off drive module and is used to connect to the negative electrode of the car battery;

[0012] The second interface is connected to the power-off drive module and is used to connect the negative pole of the vehicle cable.

[0013] In one embodiment, the first interface is also connected to the remote switch module and the status prompt module;

[0014] The interface module also includes:

[0015] The third interface is connected to the remote switch module and the status prompt module respectively, and is used to connect to the positive electrode of the car battery.

[0016] In one embodiment, the status prompt module includes:

[0017] The switch unit is connected to the third interface and the power-off drive module respectively, and is used to generate a prompt drive signal according to the working state;

[0018] The prompt unit is connected to the switch unit, the first interface and the third interface respectively, and is used to provide a connection prompt or a power-off prompt according to the prompt driving signal.

[0019] In one embodiment, the switch unit includes a relay K2;

[0020] The coil of the relay K2 is connected to the third interface and the power-off driving module respectively, and the contacts of the relay K2 are connected to the prompt unit and the third interface respectively.

[0021] In one embodiment, the input end of the remote switch module is connected to the third interface, the first output end of the remote switch module is connected to the power-off driving module, and the second output end of the remote switch module is connected to the first interface.

[0022] In one embodiment, the power-off driving module includes a relay K1;

[0023] The coil of the relay K1 is connected to the first interface and the second output end of the remote switch module respectively, and the contacts of the relay K1 are connected to the first interface and the second interface respectively.

[0024] In one embodiment, the power-off control circuit further includes:

[0025] A first state indication module, connected to the power-off driving module and the third interface respectively, for indicating a working state;

[0026] The second status indication module is connected to the first interface and the third interface respectively, and is used to indicate the battery status of the vehicle battery.

[0027] The present application also proposes a power-off control device, the power-off control device comprising:

[0028] Such as the power-off control circuit mentioned above.

[0029] One or more technical solutions proposed in this application have at least the following technical effects:

[0030] The technical solution of the present application connects or disconnects the vehicle battery and the vehicle cable according to the on / off state of the remote switch module through the power-off drive module, thereby realizing remote connection and disconnection of the negative cable of the vehicle battery. When troubleshooting vehicle circuit faults, there is no need for people to repeatedly walk to the energy storage battery, which saves time for connecting and disconnecting the negative cable of the energy storage battery, thereby saving time for troubleshooting vehicle circuit faults and improving the efficiency of troubleshooting vehicle circuit faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the structure of an embodiment of a power-off control circuit provided by the present application;

[0033] Figure 2 This is a circuit schematic diagram of an embodiment of a power-off control circuit provided in the present application.

[0034] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] It should be noted that in the present invention, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a device or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a device or system. In the absence of more restrictions, an element defined by the sentence "includes..." does not exclude the existence of other identical elements in the device or system including the element.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, if there are descriptions involving "first", "second", etc., the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0039] In the present utility model, the use of suffixes such as "module", "component" or "unit" to represent elements is only to facilitate the description of the present utility model, and has no specific meaning in itself. Therefore, "module", "component" or "unit" can be used in a mixed manner. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] In the related art, when an electric vehicle has a circuit fault, the negative cable of the energy storage battery is usually manually connected and disconnected multiple times to detect the resistance or voltage of the electrical appliances and lines in the circuit to troubleshoot the circuit fault. However, since the energy storage battery is set in the front or rear of the vehicle, it takes a long time to manually connect and disconnect the negative cable of the energy storage battery, resulting in low efficiency in troubleshooting the vehicle circuit fault.

[0041] In addition, when the car battery and car cable are connected, a large current will be transmitted instantaneously, which may generate sparks. If there are flammable objects next to or inside the vehicle, there is a fire hazard.

[0042] In order to solve the above technical problems, the present application proposes a power-off control circuit and device.

[0043] See also Figure 1 and Figure 2 In one embodiment of the present application, the power-off control circuit may include:

[0044] A remote switch module, used to turn on or off according to a received remote control signal;

[0045] A power-off drive module is connected to the remote switch module, the vehicle battery and the vehicle cable respectively, and is used to connect the vehicle battery and the vehicle cable according to the on state of the remote switch module, or to disconnect the vehicle battery and the vehicle cable according to the off state of the remote switch module;

[0046] The status prompt module is connected to the power-off driving module and is used for providing a connection prompt or a power-off prompt according to the working status of the power-off driving module.

[0047] It should be noted that the remote control signal can be a wireless control signal sent by a mobile device through a wireless transmission method. The wireless control signal can include a connection control signal and a power-off control signal between a car battery and a car cable. Among them, the mobile device can include a remote control, a mobile phone and other smart devices, and the wireless transmission method can include an infrared transmission method, a radio frequency transmission method and a Bluetooth transmission method. In actual use, the mobile device and the wireless transmission method can be selected according to actual use requirements. Correspondingly, the remote switch module can include a remote control switch, and the remote control switch can include a signal receiving head, a controller and a switch device, etc. The signal receiving head is used to receive the remote control signal, and the controller is connected to the signal receiving head and the switch device, and is used to control the on and off state of the switch device according to the remote control signal.

[0048] It can be understood that the power-off driving module is connected to the negative pole of the vehicle battery and the negative pole of the vehicle cable respectively, and the working state of the power-off driving module can include a connection state of connecting the vehicle battery and the vehicle cable and a disconnection state of disconnecting the vehicle battery and the vehicle cable. Correspondingly, the connection prompt can be a connection prompt for connecting the vehicle battery and the vehicle cable, and the power-off prompt can be a disconnection prompt for disconnecting the vehicle battery and the vehicle cable.

[0049] The status prompt module can detect the working state of the power-off driving module to provide prompts in the form of text and voice. Among them, the status prompt module can determine the working state of the power-off driving module according to the on-off state between the vehicle battery and the vehicle cable. Preferably, the connection prompt and the power-off prompt are voice prompts, that is, the status prompt module can output a voice connection prompt or a voice power-off prompt according to the working state of the power-off driving module.

[0050] In a feasible implementation manner, the power-off control circuit may further include:

[0051] The interface module is connected with the power-off drive module and is used for connecting the vehicle battery and the vehicle cable.

[0052] It should be noted that the interface module may include a quick connection device. When the car is in normal use, the negative pole of the car battery is connected to the negative pole of the car cable. When a circuit fault occurs in the car and troubleshooting is required, the power-off control circuit of this embodiment can be connected between the negative pole of the car battery and the negative pole of the car cable through the interface module to remotely connect and disconnect the negative pole cable of the car battery.

[0053] In a possible implementation, Figure 2 As shown, the interface module may include:

[0054] The first interface J1 is connected to the power-off drive module and is used to connect to the negative electrode of the car battery;

[0055] The second interface J2 is connected to the power-off drive module and is used to connect to the negative pole of the vehicle cable.

[0056] It should be noted that the power-off drive module needs to be connected to the negative pole of the vehicle battery and the negative pole of the vehicle cable. Therefore, the interface module may include two interfaces, which are respectively used to connect the negative pole of the vehicle battery and the negative pole of the vehicle cable.

[0057] In a possible implementation, Figure 2 As shown, the first interface J1 is also connected to the remote switch module and the status prompt module;

[0058] The interface module may also include:

[0059] The third interface J3 is connected to the remote switch module and the status prompt module respectively, and is used to connect to the positive electrode of the car battery.

[0060] It should be noted that the remote switch module and the status prompt module also need to be connected to the positive electrode of the car battery and the negative electrode of the car battery, and the car battery supplies power to the remote switch module and the status prompt module. The remote switch module and the status prompt module are both connected to the car battery through the first interface J1 and the third interface J3.

[0061] It is understandable that each interface in the interface module can use the same quick connection device or different quick connection devices, which can be selected according to actual use requirements. Preferably, each interface can be implemented by a wiring clip, and the wiring clips of different interfaces can be distinguished by color. For example, the first interface J1 can be black, the second interface J2 can be white, and the third interface J3 can be red.

[0062] In a possible implementation, Figure 2 As shown, the input terminal 1 of the remote switch module is connected to the third interface J3, the first output terminal 2 of the remote switch module is connected to the power-off drive module, and the second output terminal 3 of the remote switch module is connected to the first interface J1.

[0063] It should be noted that when the first interface J1 and the third interface J3 are connected to the car battery, the car battery powers the remote switch module. After the remote switch module is powered on, it can receive the remote control signal and be turned on or off according to the remote control signal. When the remote switch module is turned on, the positive electrode of the car battery is connected to the power-off drive module, so that the power-off drive module inputs a high-level signal of the on state of the remote switch module. When the remote switch module is turned off, the positive electrode of the car battery and the power-off drive module are disconnected, so that the power-off drive module inputs a low-level signal of the off state of the remote switch module.

[0064] In a possible implementation, Figure 2 As shown, the power-off drive module may include a relay K1;

[0065] The coil of the relay K1 is connected to the first interface J1 and the first output terminal 2 of the remote switch module respectively, and the contacts of the relay K1 are connected to the first interface J1 and the second interface J2 respectively.

[0066] It should be noted that the relay K1 may include a pair of normally open contacts. When the coil of the relay K1 is not energized, the contacts of the relay K1 remain disconnected. When the coil of the relay K1 is energized, the contacts of the relay K1 are closed. One end 3 of the coil of the relay K1 is connected to the first interface J1, the other end 4 of the coil of the relay K1 is connected to the first output end 2 of the remote switch module, the contact 1 of the relay K1 is connected to the first interface J1, and the contact 2 of the relay K1 is connected to the second interface J2.

[0067] In a specific implementation, the remote switch module connects or disconnects the positive pole of the car battery and the relay K1 according to the remote control signal. After the coil of the relay K1 is connected to the positive pole of the car battery through the remote switch module, the coil of the relay K1 is energized, so that the contact of the relay K1 is attracted, and the negative pole of the car battery is connected to the negative pole of the car cable. If the remote switch module disconnects the coil of the relay K1 from the positive pole of the car battery, the coil of the relay K1 is not energized, so that the contact of the relay K1 is disconnected, and the negative pole of the car battery is disconnected from the negative pole of the car cable.

[0068] In a feasible implementation, the status prompt module may include:

[0069] The switch unit is connected to the third interface and the power-off drive module respectively, and is used to generate a prompt drive signal according to the working state;

[0070] The prompt unit is connected to the switch unit, the first interface and the third interface respectively, and is used to provide a connection prompt or a power-off prompt according to the prompt driving signal.

[0071] It should be noted that the switch unit can be turned on or off according to the working state of the power-off driving module, thereby generating different prompt driving signals. Figure 2 As shown, the prompt unit may include a controller (not shown in the figure) and a speaker P. The controller may control the speaker P to output different voice prompts according to different prompt driving signals to provide connection prompts or power-off prompts.

[0072] It is understandable that if Figure 2 As shown, the switch unit can be connected to the third interface J3 and the contact 2 of the relay K1, and different working state signals are respectively given to the switch unit when the contact of the relay K1 is closed or disconnected. The prompt unit can be connected to the first interface J1 and the third interface J3 respectively. When the first interface J1 and the third interface J3 are connected to the car battery, the car battery supplies power to the prompt unit.

[0073] In a possible implementation, Figure 2 As shown, the switch unit may include a relay K2;

[0074] The coil of the relay K2 is connected to the third interface J3 and the power-off driving module respectively, and the contact of the relay K2 is connected to the prompt unit and the third interface J3 respectively.

[0075] It should be noted that the relay K2 includes three contacts, among which the contact 3 and the contact 5 are normally closed contacts, and the contact 3 and the contact 4 are normally open contacts. When the coil of the relay K2 is not energized, the contact 3 and the contact 5 remain normally closed, and the contact 3 and the contact 4 remain normally open; when the coil of the relay K2 is energized, the contact 3 and the contact 5 are disconnected, and the contact 3 and the contact 4 are closed. Among them, one end 1 of the coil of the relay K2 is connected to the third interface J3, and the other end 2 of the coil of the relay K2 is connected to the contact 2 of the relay K1; the contact 3 of the relay K2 is connected to the third interface J3, and the contact 4 of the relay K2 and the contact 5 of the relay K2 are both connected to the prompt unit.

[0076] In a specific implementation, after the power-off control circuit is connected to the car battery and the car cable, the coil of relay K1 is not energized, contact 1 of relay K1 and contact 2 of relay K1 are disconnected, the negative pole of the car battery and the negative pole of the car cable are disconnected, the coil of relay K2 has no current, contact 3 of relay K2 and contact 5 of relay K2 are closed, and a prompt drive signal of a power-off prompt is given to the prompt unit, and the prompt unit performs a power-off prompt.

[0077] If the remote control signal received by the remote switch module is a connection control signal, the coil of relay K1 is connected to the car battery, the coil of relay K1 is energized, so that contact 1 of relay K1 and contact 2 of relay K1 are closed, the negative pole of the car battery is connected to the negative pole of the car cable, the coil of relay K2 has current, contact 3 of relay K2 and contact 4 of relay K2 are closed, and a prompt drive signal of a connection prompt is given to the prompt unit, and the prompt unit performs a connection prompt.

[0078] Thereafter, if the remote switch module receives a power-off control signal, the coil of relay K1 is disconnected from the car battery, so that contact 1 of relay K1 and contact 2 of relay K1 are disconnected, the negative pole of the car battery and the negative pole of the car cable are disconnected, the coil of relay K2 has no current, contact 3 of relay K2 and contact 5 of relay K2 are closed, and a prompt drive signal of a power-off prompt is given to the prompt unit, and the prompt unit performs a power-off prompt.

[0079] The controller may connect the contact 4 of the relay K2 and the contact 5 of the relay K2 in a one-to-one correspondence through two pins, and receive different prompt driving signals through the two pins.

[0080] In a feasible implementation manner, the power-off control circuit may further include:

[0081] A first state indication module, connected to the power-off driving module and the third interface respectively, for indicating a working state;

[0082] The second status indication module is connected to the first interface and the third interface respectively, and is used to indicate the battery status of the vehicle battery.

[0083] It should be noted that if Figure 2 As shown, the first status indication module may include a status indicator light L2, one end of the status indicator light L2 is connected to the third interface J3, and the other end of the status indicator light L2 is connected to the contact 2 of the relay K1. When the contact 1 of the relay K1 is closed with the contact 2 of the relay K1, the status indicator light L2 lights up, and when the contact 1 of the relay K1 is disconnected with the contact 2 of the relay K1, the status indicator light L2 does not light up, thereby indicating the working status of the power-off drive module.

[0084] The second status indication module may include a status indicator lamp L1, one end of which is connected to the third interface J3, and the other end of which is connected to the first interface J1. When the first interface J1 is connected to the negative electrode of the car battery and the third interface J3 is connected to the positive electrode of the car battery, if the battery status of the car battery is normal, the status indicator lamp L1 lights up, and if the battery status of the car battery is abnormal, the status indicator lamp L2 does not light up, thereby indicating the battery status of the car battery. If the car battery is fully charged and has no faults, the battery status is normal, and if the car battery is insufficient or has a battery fault, the battery status is abnormal.

[0085] The technical solution of this embodiment connects or disconnects the car battery and the car cable according to the on / off state of the remote switch module through the power-off drive module, thereby realizing remote connection and disconnection of the negative cable of the car battery. When troubleshooting the car circuit fault, there is no need to walk to the energy storage battery repeatedly, which saves the time of connecting and disconnecting the negative cable of the energy storage battery, thereby saving the time of troubleshooting the car circuit fault and improving the efficiency of troubleshooting the car circuit fault. In addition, the power-off drive module in this embodiment is implemented by a relay. Due to the working principle of the relay that a small current controls a large current, when the negative electrode of the car battery is connected to the negative electrode of the car cable, sparks are generated inside the relay, thereby avoiding fire hazards.

[0086] In addition, the present embodiment also uses the speaker to give a connection reminder or a power-off reminder, so that the working condition of the power-off control circuit can be known from a long distance, thereby improving the reliability of automobile circuit failure.

[0087] The present application also proposes a power-off control device, the power-off control device comprising:

[0088] Such as the power-off control circuit mentioned above.

[0089] It should be noted that the specific structure of the power-off control circuit refers to the above-mentioned embodiments. Since the power-off control device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0090] The above description is only an exemplary embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A power-off control circuit, characterized in that: The power-off control circuit comprises: A remote switch module, used to turn on or off according to a received remote control signal; A power-off driving module, connected to the remote switch module, the vehicle battery and the vehicle cable respectively, for connecting the vehicle battery and the vehicle cable according to the on state of the remote switch module, or disconnecting the vehicle battery and the vehicle cable according to the off state of the remote switch module; The status prompt module is connected to the power-off driving module and is used for providing a connection prompt or a power-off prompt according to the working status of the power-off driving module.

2. The power-off control circuit according to claim 1, characterized in that: The power-off control circuit further comprises: An interface module is connected to the power-off driving module and is used to connect the vehicle battery and the vehicle cable.

3. The power-off control circuit according to claim 2, characterized in that: The interface module comprises: A first interface, connected to the power-off driving module, and used to connect to the negative electrode of the vehicle battery; The second interface is connected to the power-off driving module and is used to connect to the negative pole of the automobile cable.

4. The power-off control circuit according to claim 3, characterized in that: The first interface is also connected to the remote switch module and the status prompt module; The interface module also includes: The third interface is connected to the remote switch module and the status prompt module respectively, and is used to connect to the positive electrode of the vehicle battery.

5. The power-off control circuit according to claim 4, characterized in that: The status prompt module comprises: a switch unit, connected to the third interface and the power-off driving module respectively, and used for generating a prompt driving signal according to the working state; The prompt unit is connected to the switch unit, the first interface and the third interface respectively, and is used to provide a connection prompt or a power-off prompt according to the prompt driving signal.

6. The power-off control circuit according to claim 5, characterized in that: The switch unit includes a relay K2; The coil of the relay K2 is connected to the third interface and the power-off driving module respectively, and the contacts of the relay K2 are connected to the prompt unit and the third interface respectively.

7. The power-off control circuit according to claim 4, characterized in that: The input end of the remote switch module is connected to the third interface, the first output end of the remote switch module is connected to the power-off driving module, and the second output end of the remote switch module is connected to the first interface.

8. The power-off control circuit according to claim 7, characterized in that: The power-off driving module includes a relay K1; The coil of the relay K1 is connected to the first interface and the second output end of the remote switch module respectively, and the contacts of the relay K1 are connected to the first interface and the second interface respectively.

9. The power-off control circuit according to claim 4, characterized in that: The power-off control circuit further comprises: A first state indication module, connected to the power-off driving module and the third interface respectively, and used for indicating the working state; The second status indication module is connected to the first interface and the third interface respectively, and is used to indicate the battery status of the vehicle battery.

10. A power failure control device, characterized in that: The power-off control device comprises: A power-off control circuit as claimed in any one of claims 1 to 9.

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