Control device and control method for preventing vehicle battery from running out of power

Abstract

This invention relates to the field of automotive electronic control technology, and in particular to a control device and method for preventing vehicle battery depletion. The device includes a door controller, a central locking switch, a battery, and an electromagnetic main power switch. The door controller receives signals from the central locking switch to control the on / off state of the electromagnetic main power switch, which is connected between the battery and the vehicle's electrical loads. The entire process can be completed without manual intervention, achieving intelligent battery disconnection, which helps prevent battery depletion, extends battery life, and reduces vehicle safety hazards.

Description

Technical Field

[0001] This invention relates to the field of automotive electronic control technology, and in particular to a control device and control method for preventing vehicle batteries from running out of power. Background Technology

[0002] As automobiles become increasingly equipped with sophisticated electrical systems, the number of controllers and electrical components continues to grow. From the time a vehicle rolls off the production line until it reaches the end customer, the main power switch for the battery may fail to automatically de-energize when the vehicle is normally turned off. This results in various electrical components not being fully powered down, with some remaining energized. In some cases, if a vehicle has been parked for an extended period without the battery being removed, the battery may become depleted if the vehicle's power supply is not manually disconnected. This can lead to unstable engine idling, reduced fuel injection, insufficient ignition energy, and the inability of some components to start properly, causing inconvenience to the end user.

[0003] Regarding the issue of commercial vehicle battery depletion, existing effective methods to prevent battery depletion include: (1) installing a mechanical main power switch next to the battery, which can be manually switched from ON to OFF to cut off the power; (2) making the battery removable, thus cutting off the vehicle's power supply by removal. Manually cutting off the vehicle's power supply is too time-consuming, cumbersome, and prone to oversight. This not only causes battery depletion but also affects battery lifespan and, in special circumstances, may even damage the vehicle. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to solve the problem of battery depletion caused by vehicles not being used for a long time.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] On one hand, the present invention provides a control device for preventing vehicle battery depletion, including a central locking switch, a door controller, and a battery power supply system; the battery power supply system includes a battery and an electromagnetic power master switch; the electromagnetic power master switch includes a first switch contact and a second switch contact, wherein the first switch contact is electrically connected to the positive terminal of the battery, and the second switch contact is electrically connected to a first load; the door controller includes a signal input terminal and a first output terminal; the signal input terminal is communicatively connected to the central locking switch; the first output terminal is electrically connected to the negative terminal of the control terminal of the electromagnetic power master switch.

[0007] Furthermore, the door controller includes an electronic controller that controls the output of the door controller using a voltage signal.

[0008] Furthermore, the output terminals of the door controller also include a turn signal control terminal, a door control terminal, a horn control terminal, a cab power control terminal, and a power supply terminal.

[0009] Furthermore, the electromagnetic power main switch is a normally open contact.

[0010] On the other hand, the present invention provides a control method for a control device to prevent vehicle battery depletion, comprising the following steps:

[0011] S1. The door controller receives the central locking switch signal;

[0012] S2. The door controller controls the electromagnetic power switch to turn on / off based on the received lock / unlock signal.

[0013] Furthermore, in step S1, the central locking switch signal is an open / close signal from a remote key or a manual switch.

[0014] Furthermore, step S2 specifically includes:

[0015] When the door controller receives the unlocking signal from the central locking switch at its signal input terminal, the door controller outputs a negative signal to the negative terminal of the electromagnetic power switch control terminal, causing the electromagnetic power switch contacts to close and connecting the positive terminal of the battery to the first load. When the door controller receives the locking signal from the central locking switch, it disconnects the negative signal from its first output terminal, causing the electromagnetic power switch contacts to open and de-energizing the vehicle.

[0016] Furthermore, step S11 is included between step S1 and step S2:

[0017] When the door controller receives the lock / unlock signal from the central locking switch, it will simultaneously control the vehicle's left and right turn signals to flash, the horn to sound, and the doors to open / close. Turn the cab control power on / off .

[0018] Furthermore, step S11 is followed by step S12:

[0019] When the door controller receives the unlocking signal from the central locking switch at its signal input terminal, the second output terminal of the door controller outputs a signal to the driver's cab power supply. After the driver's cab power is turned on To block the remote key signal.

[0020] Furthermore, step S21 is included after step S2:

[0021] When the battery is connected to the first load and the vehicle is in normal driving condition, the first output terminal of the door controller continuously outputs a negative polarity signal.

[0022] The beneficial effects of this invention are as follows: By using a door controller to control the electromagnetic main power switch, the connection between the battery and the main power supply terminal of all electrical components in the vehicle is controlled. This design facilitates disconnecting the battery from the vehicle's main circuit when the car is locked, thus ensuring that the battery does not become depleted during extended periods of vehicle parking due to some electrical components still being powered. Furthermore, using door lock signals to control the door controller enables intelligent control, resulting in a simple structure and easy operation. Attached Figure Description

[0023] Figure 1 Schematic diagram of a control device to prevent vehicle battery from running out of power;

[0024] Figure 2 A flowchart of the control method for a control device to prevent vehicle battery depletion;

[0025] Figure 3 A flowchart of the preferred control method for a control device to prevent vehicle battery depletion;

[0026] Figure 4 This is a schematic diagram of the working principle of the car door controller.

[0027] Labeling explanation: 1. Door controller; 2. Battery; 3. Electromagnetic main power switch; 4. Central locking switch. Detailed Implementation

[0028] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0029] This invention provides a control device for preventing vehicle battery depletion, including a central locking switch, a door controller, and a battery power supply system. The battery power supply system includes a battery and an electromagnetic main power switch. The electromagnetic main power switch includes a first switch contact and a second switch contact, wherein the first switch contact is electrically connected to the positive terminal of the battery, and the second switch contact is electrically connected to a first load. The door controller includes a signal input terminal and a first output terminal. The signal input terminal is communicatively connected to the central locking switch, and the first output terminal is electrically connected to the negative terminal of the control terminal of the electromagnetic main power switch.

[0030] As can be seen from the above description, the beneficial effects of the present invention are as follows: by using the central locking switch signal to control the door controller to indirectly control the battery power supply system, the vehicle can be automatically powered on when unlocked and automatically powered off when locked.

[0031] Furthermore, the door controller includes an electronic controller that controls the output of the door controller using a voltage signal.

[0032] As can be seen from the above description, the door controller contains an electronic controller, which mainly controls the corresponding output terminals of the door controller by providing voltage signals.

[0033] Furthermore, the output terminals of the door controller also include a turn signal control terminal, a door control terminal, a horn control terminal, a cab power control terminal, and a power supply terminal.

[0034] As can be seen from the above description, in addition to controlling the battery power supply system, the door controller can also control some light loads of the vehicle, such as turn signals, doors, horn and driver's cab power supply.

[0035] Furthermore, the electromagnetic power main switch is a normally open contact.

[0036] As can be seen from the above description, when the door controller does not provide a signal, the electromagnetic power main switch remains off, and the battery does not supply power to the vehicle's main load.

[0037] The present invention also provides a control method for a control device to prevent vehicle battery depletion, comprising the following steps:

[0038] S1. The door controller receives the central locking switch signal;

[0039] S2. The door controller controls the electromagnetic power switch to turn on / off based on the received lock / unlock signal.

[0040] As can be seen from the above description, the control logic of the present invention is as follows: the door controller receives the central locking switch signal, and the door controller controls the conduction and cutoff of the electromagnetic power main switch according to the received signal, thereby achieving the purpose of controlling the connection and disconnection of the battery to the vehicle's main load.

[0041] Furthermore, in step S1, the central locking switch signal is an open / close signal from a remote key or a manual switch.

[0042] As can be seen from the above description, the signal of the central locking switch is the communication or mechanical signal given by the person when the vehicle is started and stopped.

[0043] Furthermore, step S2 specifically includes:

[0044] When the door controller receives the unlocking signal from the central locking switch at its signal input terminal, the door controller outputs a negative signal to the negative terminal of the electromagnetic power switch control terminal, causing the electromagnetic power switch contacts to close and connecting the positive terminal of the battery to the first load. When the door controller receives the locking signal from the central locking switch, it disconnects the negative signal from its first output terminal, causing the electromagnetic power switch contacts to open and de-energizing the vehicle.

[0045] As described above, after receiving the unlock signal from the central locking switch, the door controller provides a negative signal to the negative terminal of the electromagnetic power switch control terminal, energizing the coil and connecting the control terminal circuit. Due to electromagnetic induction, the contacts of the electromagnetic power switch close, connecting the positive terminal of the battery to the vehicle load, forming a closed circuit, and the battery begins to supply power to the vehicle. Upon receiving the lock signal, the door controller disconnects the negative signal supplied to the negative terminal of the electromagnetic power switch control terminal, shutting off the control terminal circuit, de-energizing the coil, opening the switch contacts, and preventing the battery from supplying power to the vehicle load.

[0046] Furthermore, step S11 is included between step S1 and step S2:

[0047] When the door controller receives the lock / unlock signal from the central locking switch, it will control the vehicle's left and right turn signals to flash, the horn to sound, the doors to open / close, and the driver's cab control power to turn on / off.

[0048] As described above, after receiving the central locking switch signal, the door controller, in addition to providing a signal to the electromagnetic power main switch, will also issue a prompt indicating that the vehicle is unlocked / locked. Unlocking activates the driver's cab control power to unlock basic functions.

[0049] Furthermore, step S11 is followed by step S12:

[0050] When the signal input terminal of the door controller receives the unlocking signal from the central locking switch, the second output terminal of the door controller outputs a signal to the driver's cab power supply. After the driver's cab power supply is turned on, the remote key signal is blocked.

[0051] As can be seen from the above description, after the power is turned on in the cab, the remote control signal will be blocked to prevent accidental activation of the remote control lock button and causing the entire vehicle to lose power.

[0052] Furthermore, step S21 is included after step S2:

[0053] When the battery is connected to the first load and the vehicle is in normal driving condition, the first output terminal of the door controller continuously outputs a negative polarity signal.

[0054] As can be seen from the above description, when the vehicle is in operation, the door controller continuously provides a negative polarity signal to ensure that the car will not suddenly lose power during operation.

[0055] Please refer to Figure 1 The first embodiment of the control device for preventing vehicle battery depletion in this invention is as follows:

[0056] This invention provides a control device to prevent vehicle battery depletion, comprising a door controller 1, a battery 2, an electromagnetic power switch 3, and a central locking switch 4. The door controller 1 receives the unlocking signal from the central locking switch 4 at its signal input terminal and outputs a negative signal to the negative terminal of the electromagnetic power switch 3 through its first output terminal. The control terminal of the electromagnetic power switch 3 is thus turned on, the coil is energized, and due to the principle of electromagnetic induction, the contacts of the electromagnetic power switch 3 close, allowing the battery 2 to supply power to the first load, and the vehicle operates normally. However, when the door controller 1 receives the locking signal from the central locking switch 4 at its signal input terminal, the door controller 1 disconnects the negative signal at its first output terminal, and no current flows through the coil of the electromagnetic power switch 3. Since the electromagnetic power switch 3 has normally open contacts, the contacts open when no current flows through its control terminal coil, preventing the battery 2 from supplying power to the first load.

[0057] In this embodiment, the power supply terminal of the door controller 1 is directly connected to the battery 2. Therefore, regardless of whether the central locking switch 4 inputs an unlock signal or a lock signal, the door controller 1 always remains powered. In this way, when the central locking switch 4 sends a signal, the door controller 1 can receive the signal and react immediately.

[0058] In this embodiment, the central locking switch 4 is a remote key or a manual mechanical key switch. After the door controller 1 receives the unlock signal from the central locking switch 4, in addition to providing a negative polarity signal to the electromagnetic power master switch 3, it also sends voltage signals to its other control terminals. Therefore, upon receiving the unlock signal from the central locking switch 4, the vehicle's left and right turn signals will flash, the horn will sound, the door locks will open, and the driver's cab power will be turned on. Thus, the owner can determine that the vehicle has started based on these signals. Correspondingly, after the door controller 1 receives the lock signal from the central locking switch 4, in addition to disconnecting the negative polarity signal provided to the electromagnetic power master switch 3, it also sends corresponding voltage signals to its other control terminals. The vehicle's left and right turn signals will flash, the horn will sound, the door locks will close, and the driver's cab power will be cut off. The owner can also know that the vehicle has been powered off through the flashing turn signals and the sounding horn.

[0059] In this embodiment, after the driver's cab power is turned on, the door controller 1 will block the signal from the remote key to prevent the vehicle from being powered down and causing an accident due to accidental activation of the remote key's lock button during vehicle startup and operation. During vehicle operation, the door controller 1 defaults to continuously outputting a negative signal from its first output terminal to the negative terminal of the electromagnetic power switch 3 control terminal to ensure stable power supply during vehicle operation.

[0060] Please refer to Figure 1 , Figure 2 and Figure 3The second embodiment of the control method for the control device to prevent vehicle battery depletion in this invention is as follows:

[0061] This invention provides a control method for a vehicle battery depletion control device, comprising a door controller 1, a battery 2, an electromagnetic main power switch 3, and a central locking switch 4. After the central locking switch 4 sends an unlock signal, the door controller 1 receives the signal and controls its own output terminals. One output terminal of the door controller 1 turns on the driver's cab power, blocking the remote key signal. Simultaneously, the other output terminal of the door controller outputs a negative signal to the electromagnetic main power switch 3. The electromagnetic main power switch 3 connects the positive terminal of the battery to the vehicle's main load, and the vehicle is powered normally. After the central locking switch 4 sends a lock signal, the door controller 1 receives the signal and controls its own output terminals. One output terminal turns off the driver's cab power, restoring the remote key signal. Simultaneously, the other output terminal stops outputting a negative signal to the electromagnetic main power switch 3. The switch closes, disconnecting the battery from the vehicle's main load, and the vehicle is powered off.

[0062] In this embodiment, the power supply terminal of the door controller 1 is directly connected to the battery 2. Therefore, regardless of whether the central locking switch 4 inputs an unlock signal or a lock signal, the door controller 1 always remains powered. In this way, when the central locking switch 4 sends a signal, the door controller 1 can receive the signal and react immediately.

[0063] In this embodiment, the central locking switch 4 is a remote key or a manual mechanical key switch. After the door controller 1 receives the unlock signal from the central locking switch 4, in addition to providing a negative polarity signal to the electromagnetic power master switch 3, it also sends voltage signals to its other control terminals. Therefore, upon receiving the unlock signal from the central locking switch 4, the vehicle's left and right turn signals will flash, the horn will sound, and the door locks will open. The owner can determine that the vehicle has started based on these signals. Correspondingly, after the door controller 1 receives the lock signal from the central locking switch 4, in addition to disconnecting the negative polarity signal provided to the electromagnetic power master switch 3, it also sends corresponding voltage signals to its other control terminals. The vehicle's left and right turn signals will flash, the horn will sound, and the door locks will close. The owner can also know that the vehicle has been powered off through the flashing turn signals and the sounding horn.

[0064] Please refer to Figure 1 and Figure 4 Embodiment 3 of the present invention is as follows:

[0065] The control device to prevent the vehicle battery from running out of power uses the door controller 1 to be associated with the electromagnetic power switch 3. The left door lock switch and the right door lock switch are connected in parallel. The electronic controller ECU in the door controller 1 is responsible for receiving the trigger signal of the central locking switch and outputting the relay drive signal with control function.

[0066] In this embodiment, pin 1 of the door controller 1 is connected to turn signal 43 to control the output of the left turn signal; pin 2 of the door controller 1 is connected to turn signal 44 to control the output of the right turn signal; pin 3 of the door controller 1 is connected to the central locking output to control the locking motors of the left and right front doors; pin 4 of the door controller 1 is connected to the central unlocking output to control the unlocking motors of the left and right front doors; pin 5 of the door controller 1 is connected to the negative terminal of the electromagnetic power master switch 3, i.e., pin 1 of the electromagnetic power master switch 3; pin 6 of the door controller 1 is connected to the horn switch 90 to control the horn; Pin 7 of door controller 1 receives the door lock signal input; pins 8 and 10 of door controller 1 are connected to the positive terminal of the battery; pin 9 of door controller 1 is connected to the positive terminal of the cab power supply; pins 11 and 12 of door controller 1 are connected to the negative terminal of the power supply; pin 1 of electromagnetic power switch 3 is connected to pin 5 of door controller 1; pin 2 of electromagnetic power switch 3 is connected to the positive terminal of the battery; pin 3 of electromagnetic power switch 3, numbered 30, is connected to the positive terminal of the battery; pin 5 of electromagnetic power switch 3, numbered 87, is connected to the main power terminals UC / RA / UB / U of each electrical appliance.

[0067] In this embodiment, when a door lock signal is input, the electronic controller (ECU) in the door controller 1 blocks pin 5 of the door controller 1, providing no signal to pin 1 of the electromagnetic power switch 3. Simultaneously with the input of the electronic lock signal, the door lock motor locks, and the door controller 1 outputs a signal to close the electromagnetic power switch 3, causing the battery to disconnect from the main power supply of all electrical appliances. Conversely, when a door unlock signal is input, the electronic controller (ECU) in the door controller 1 outputs a relay drive signal with control function. The electronic controller (ECU) in the door controller 1 outputs a negative signal to the electromagnetic power switch 3, keeping the electromagnetic power switch 3 in a normally closed state. Simultaneously with the input of the unlock signal, the door lock motor unlocks, and the door controller 1 outputs a signal to open the electromagnetic power switch 3, allowing the battery to power itself and supply power to the entire vehicle.

[0068] In this embodiment, pin 5 of the door controller 1 is associated with the central locking switch, and a negative signal is output to the electromagnetic main power switch 3. When the central locking switch 2 outputs an unlock signal, pin 5 of the door controller 1 simultaneously outputs a negative signal to pin 1 of the electromagnetic switch, and the battery is powered on. When the central locking switch 2 inputs a locking signal, the negative signal of pin 5 of the door controller 1 is disconnected, and the battery is disconnected from the main power supply terminal of each electrical appliance.

[0069] In this embodiment, pins 8 and 10 of the door controller 1 are connected to the positive terminal of the battery, serving as the constant power input terminals of the door controller 1. When the remote key unlock button is pressed, the door unlock motor pin 4 of the door controller 1 is triggered, and the electromagnetic power switch 3 receives a negative signal, unlocking all doors and causing the left and right turn signals to flash. When the remote key lock button is pressed, a door locking signal is input, triggering the door locking motor pin 3 of the door controller 1, disconnecting the negative signal of the electromagnetic power switch 3, locking all doors, and causing the left and right turn signals to flash and the horn signal to be output. When the driver's cab power is ON, the remote control is disabled. When the vehicle is in normal driving or powered on, the drive signal of pin 5 of the door controller 1 is invalid, and this control pin is only associated with the door locking signal.

[0070] In this embodiment, the hard wire of pin 5 of the door controller 1 is connected to the negative pin 1 of the electromagnetic power switch 3, the hard wire of pin 2 of the electromagnetic power switch 3 is connected to the positive terminal of the battery 2, the hard wire of pin 3 of the electromagnetic power switch 3 is connected to the positive terminal of the battery 2, the hard wire of pin 5 of the electromagnetic power switch 2 is connected to the main power terminal of each electrical appliance, and the negative terminal of the battery 2 is grounded to the vehicle frame, so that it works to form an electrical circuit.

[0071] In this embodiment, the control device for preventing the vehicle battery from running out of power controls the door opening and closing, remote key or manual unlocking output according to the working principle of the door controller 1. After receiving the signal, the door lock button pops up, all doors are unlocked, the electromagnetic power switch 3 is energized, the contacts close, and the whole vehicle is powered on; when the remote key or manual locking input is low level active, after receiving the signal, the driver's door lock button is pressed down, all doors are locked, the electromagnetic power switch 3 is de-energized, the contacts open, and the whole vehicle is powered off.

[0072] In this embodiment, when the electronic control unit (ECU) controlling the car door triggers an input signal via pin 7 of the door lock signal, it operates similarly to a motion sensor switch. The motion sensor signal is wirelessly connected via the electronic remote key. When the ECU receives a low-level trigger signal from pin 7, the left turn signal pin 1, the right turn signal pin 2, and the horn signal pin 6 all output voltage signals. Simultaneously, the door lock pin 3 outputs a voltage signal, the door lock motor operates, and pin 5 of the door controller 1 disconnects the negative polarity signal to the electromagnetic power switch.

[0073] The working principle of the control device and control method for preventing vehicle battery depletion provided by this invention is as follows:

[0074] When the door controller receives the unlock signal from the central locking switch, it outputs a negative signal to the electromagnetic power master switch, the switch contacts close, and the battery connects to the vehicle load; when the door controller receives the lock signal from the central locking switch, it disconnects the negative signal supplied to the electromagnetic power master switch, the switch contacts open, and the vehicle is powered off.

[0075] In summary, this invention, based on the existing vehicle structure, adds an electromagnetic power master switch and a door controller. The door controller receives signals from the central locking switch to control the on / off state of the electromagnetic power master switch, thereby indirectly controlling the battery to supply power to the vehicle when unlocked and disconnecting it from the vehicle's main electrical loads when locked. Disconnecting the battery from the vehicle's loads when locking effectively prevents battery depletion, extends battery life, and reduces vehicle safety hazards.

[0076] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A control method for a control device to prevent vehicle battery depletion, characterized in that, The control device includes a central locking switch, a door controller, and a battery power supply system; The battery power supply system includes a battery and an electromagnetic main power switch; The electromagnetic power switch includes a first switch contact and a second switch contact, wherein the first switch contact is electrically connected to the positive terminal of the battery, and the second switch contact is electrically connected to a first load. The door controller includes a signal input terminal and a first output terminal; the signal input terminal is communicatively connected to the central locking switch; the first output terminal is electrically connected to the negative terminal of the control terminal of the electromagnetic power main switch. The control method includes the following steps: S1. The door controller receives the central locking switch signal; S2. The door controller controls the electromagnetic power switch to turn on / off based on the received lock / unlock signal; Step S11 is also included between step S1 and step S2: When the door controller receives the lock / unlock signal from the central locking switch, it will control the vehicle's left and right turn signals to flash, the horn to sound, the doors to open / close, and the driver's cab control power to turn on / off. Step S11 is followed by step S12: When the signal input terminal of the door controller receives the unlocking signal from the central locking switch, the second output terminal of the door controller outputs a signal to the driver's cab power supply. After the driver's cab power supply is turned on, the remote key signal is blocked.

2. The control method for a control device for preventing vehicle battery depletion according to claim 1, characterized in that, In step S1, the central locking switch signal is the unlock / lock signal of the remote key or manual switch.

3. The control method of the control device for preventing vehicle battery depletion according to claim 1, characterized in that, Step S2 is as follows: When the door controller receives the unlocking signal from the central locking switch at its signal input terminal, the door controller outputs a negative signal to the negative terminal of the electromagnetic power switch control terminal, causing the electromagnetic power switch contacts to close and connecting the positive terminal of the battery to the first load. When the door controller receives the locking signal from the central locking switch, it disconnects the negative signal from its first output terminal, causing the electromagnetic power switch contacts to open and de-energizing the vehicle.

4. The control method of the control device for preventing vehicle battery depletion according to claim 1, characterized in that, Step S2 is followed by step S21: When the battery is connected to the first load and the vehicle is in normal driving condition, the first output terminal of the door controller continuously outputs a negative polarity signal.

5. The control method of the control device for preventing vehicle battery depletion according to claim 1, characterized in that, The door controller includes an electronic controller that controls the output of the door controller using voltage signals.

6. The control method of the control device for preventing vehicle battery depletion according to claim 1, characterized in that, The output terminals of the door controller also include a turn signal control terminal, a door control terminal, a horn control terminal, a cab power control terminal, and a power supply terminal.

7. The control method of the control device for preventing vehicle battery depletion according to claim 1, characterized in that, The electromagnetic power switch has a normally open contact.

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