A power master control device and system

Abstract

The application discloses a power supply general control device and system, and relates to the field of vehicles. A second controllable switch is arranged in a cab of the vehicle. When an emergency occurs, the second controllable switch is disconnected according to the operation of a user in the cab and / or the key control signal transmitted by a key power supply circuit and the generator control signal transmitted by a generator power supply circuit are not transmitted to the second controllable switch, so that a plurality of ignition switches are disconnected. As a result, the ignition load connected with the ignition switches is powered off by disconnecting the second controllable switch when the emergency occurs. In addition, the application further comprises a first controllable switch. When the second controllable switch is disconnected according to the operation of the user and / or the key control signal and the generator control signal are not transmitted to the second controllable switch, the first controllable switch is disconnected. As a result, the cab power supply load connected with the first controllable switch is powered off by disconnecting the second controllable switch when the emergency occurs. The safety of the vehicle is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and in particular to a power control device and system. Background Technology

[0002] The existing power control system in vehicles uses a mechanical switch mounted on the chassis. The ignition loads on the chassis are controlled by opening and closing the mechanical switch. In case of an emergency, the mechanical switch can be actively shut off to cut off the power supply to the ignition loads on the chassis. However, because the mechanical switch is mounted on the vehicle chassis, it cannot be shut off in a timely manner, which can easily cause vehicle malfunctions. Furthermore, the existing power control system can only de-energize the ignition loads after disconnecting the mechanical switch, but cannot de-energize the loads in the driver's cab, which can also easily cause vehicle malfunctions. Summary of the Invention

[0003] The purpose of this invention is to provide a power control device and system. A second controllable switch is installed in the vehicle's driver's cab. In an emergency, when the second controllable switch is disconnected based on user operation in the driver's cab and / or when the key control signal from the key power supply circuit and the generator control signal from the generator power supply circuit are not transmitted to the second controllable switch, several ignition switches are disconnected. This allows the ignition loads connected to the ignition switches to lose power in an emergency by disconnecting the second controllable switch. Furthermore, this invention also includes a first controllable switch. When the second controllable switch is disconnected based on user operation and / or when the key control signal and generator control signal are not transmitted to the second controllable switch, the first controllable switch is also disconnected. This allows the driver's cab power loads connected to the first controllable switch to lose power in an emergency by disconnecting the second controllable switch, thus improving vehicle safety.

[0004] To solve the above-mentioned technical problems, the present invention provides a power supply master control device, comprising:

[0005] Several ignition switches, each with its input terminal connected to a battery and its output terminal connected to a corresponding number of ignition loads;

[0006] A first controllable switch, the input terminal of which is connected to the battery, and the output terminal of which is connected to the cab power supply load;

[0007] A second controllable switch is installed inside the vehicle's driver's compartment. The input terminals of the second controllable switch are connected to the key power supply circuit and the generator power supply circuit, respectively, and the output terminals are connected to the control terminals of each ignition switch and the first controllable switch, respectively. The second controllable switch is used to control the first controllable switch and each ignition switch to close when it is closed according to user operation and receives a key control signal transmitted by the key power supply circuit or a generator control signal transmitted by the generator power supply circuit. When it is opened according to user operation and / or does not receive the key control signal or the generator control signal, it controls the first controllable switch and each ignition switch to open.

[0008] Optionally, the ignition switch is an ignition relay. One end of the coil of the ignition relay is connected to the output terminal of the second controllable switch, the other end of the coil is connected to ground, the common terminal is connected to the battery, the normally open terminal is connected to the ignition load, and the normally closed terminal is left floating. The coil is energized when the second controllable switch is closed and receives the key control signal or the key control signal, and the common terminal is connected to the normally open terminal. When the second controllable switch is open and / or does not receive the key control signal and the generator control signal, the coil is not energized, and the common terminal is connected to the normally closed terminal.

[0009] Optional, also includes:

[0010] The first fuse has its input terminal connected to the battery and its output terminal connected to the input terminal of the first controllable switch.

[0011] Optionally, the first controllable switch is a controllable relay. The moving contact of the controllable relay is connected to the battery. One end of the coil of the controllable relay is connected to the output terminal of the second controllable switch, and the other end of the coil is connected to ground. The stationary contact is connected to the power supply load in the cab. When the second controllable switch is closed and receives the key control signal or the generator control signal, the coil is energized, and the moving contact is connected to the stationary contact. When the second controllable switch is open and / or does not receive the key control signal and the generator control signal, the coil is not energized, and the moving contact is disconnected from the stationary contact.

[0012] Optional, also includes:

[0013] The first diode has its anode connected to the key power supply circuit and its cathode connected to the input terminal of the second controllable switch.

[0014] The second diode has its anode connected to the generator power supply circuit and its cathode connected to the input terminal of the second controllable switch.

[0015] Optionally, the cab power supply load is a preset electrical device. The input terminal of the preset power supply device is connected to the output terminal of the first controllable switch, and the output terminal is grounded, so as to be energized when the first controllable switch is closed.

[0016] Optional, also includes:

[0017] The second fuse has its input terminal connected to the output terminal of the first controllable switch, and its output terminal connected to the input terminal of the preset electrical device.

[0018] Optional, also includes:

[0019] A hazard alarm device is installed in the driver's cab. The input terminal of the hazard alarm device is connected to the battery, and the output terminal is grounded. It is used to issue a preset hazard alarm when the battery is powered on.

[0020] Optional, also includes:

[0021] The third fuse has its input terminal connected to the battery and its output terminal connected to the input terminal of the hazard alarm device.

[0022] To solve the above-mentioned technical problems, the present invention also provides an electronic master control system, including a battery, a key power supply circuit, a generator power supply circuit, a plurality of ignition loads, a cab power supply load, and a power master control device as described above. The power master control device is connected to the battery, the key power supply circuit, the generator power supply circuit, each of the ignition loads, and the cab power supply load, respectively.

[0023] The purpose of this invention is to provide a power control device and system. A second controllable switch is installed in the vehicle's driver's cab. In an emergency, when the second controllable switch is disconnected based on user operation in the driver's cab and / or when the key control signal from the key power supply circuit and the generator control signal from the generator power supply circuit are not transmitted to the second controllable switch, several ignition switches are disconnected. This allows the ignition loads connected to the ignition switches to lose power in an emergency by disconnecting the second controllable switch. Furthermore, this invention also includes a first controllable switch. When the second controllable switch is disconnected based on user operation and / or when the key control signal and generator control signal are not transmitted to the second controllable switch, the first controllable switch is also disconnected. This allows the driver's cab power loads connected to the first controllable switch to lose power in an emergency by disconnecting the second controllable switch, thus improving vehicle safety. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a power control device provided by the present invention;

[0026] Figure 2 This is a schematic diagram of a power control system provided by the present invention. Detailed Implementation

[0027] The core of this invention is to provide a power control device and system. A second controllable switch is installed in the vehicle's driver's cab. In an emergency, when the second controllable switch is disconnected based on user operation in the driver's cab and / or when the key control signal from the key power supply circuit and the generator control signal from the generator power supply circuit are not transmitted to the second controllable switch, several ignition switches are disconnected. This allows the ignition loads connected to the ignition switches to lose power in an emergency by disconnecting the second controllable switch. Furthermore, this invention also includes a first controllable switch. When the second controllable switch is disconnected based on user operation and / or when the key control signal and generator control signal are not transmitted to the second controllable switch, the first controllable switch is disconnected. This allows the driver's cab power loads connected to the first controllable switch to lose power in an emergency by disconnecting the second controllable switch, thus improving vehicle safety.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please refer to Figure 1 , Figure 1 A schematic diagram of a power supply control device provided by the present invention. The device includes:

[0030] Several ignition switches 1, each with its input terminal connected to the battery and its output terminal connected to a corresponding number of ignition loads;

[0031] The first controllable switch 2 has its input terminal connected to the battery and its output terminal connected to the cab power supply load.

[0032] The second controllable switch 3 is installed inside the vehicle's driver's compartment. The input terminal of the second controllable switch 3 is connected to the key power supply circuit and the generator power supply circuit, respectively. The output terminal is connected to the control terminal of each ignition switch and the control terminal of the first controllable switch 2, respectively. It is used to control the first controllable switch 2 and each ignition switch to close when it is closed according to the user operation and receives the key control signal transmitted by the key power supply circuit or the generator control signal transmitted by the generator power supply circuit. When it is opened according to the user operation and / or does not receive the key control signal and the generator control signal, it controls the first controllable switch 2 and each ignition switch to open.

[0033] In this invention, when the battery is powered on, if the second controllable switch 3 closes according to user operation and receives a key control signal or generator control signal, it controls the ignition switch to close, thereby energizing the ignition load connected to the ignition switch; if the second controllable switch 3 opens according to user operation and / or does not receive the key control signal or generator control signal, it controls the ignition switch to open, thereby de-energizing the ignition load connected to the ignition switch. This allows the user to manually control the second controllable switch 3 to open in case of an emergency, thereby de-energizing the ignition load and ensuring vehicle safety. Furthermore, when the battery is powered on, if the second controllable switch 3 closes according to user operation and receives a key control signal or generator control signal, it controls the first controllable switch 2 to close, thereby energizing the cab power supply load connected to the first controllable switch 2; if the second controllable switch 3 opens according to user operation and / or does not receive a key control signal or generator control signal, the first controllable switch 2 will open, thereby de-energizing the cab power supply load connected to the first controllable switch 2. This allows the user to manually control the second controllable switch 3 to open in case of an emergency, thereby de-energizing the cab power supply load and ensuring vehicle safety.

[0034] It should be noted that in practical applications, the key power supply circuit outputs IG electricity, and the signal it sends is generally the T15 signal. The alternator power supply circuit generates the engine ignition signal, which is the start signal, generally called the T50 signal, and transmits control electricity, i.e., the D+ signal, through the alternator D+.

[0035] This embodiment provides a power control device and system. A second controllable switch 3 is installed in the vehicle's driver's cab. In an emergency, when the second controllable switch 3 is disconnected by the user in the driver's cab and / or when the key control signal transmitted from the key power supply circuit and the generator control signal transmitted from the generator power supply circuit are not transmitted to the second controllable switch 3, several ignition switches 1 are disconnected. This allows the ignition loads connected to the ignition switches to lose power in an emergency by disconnecting the second controllable switch 3. In addition, the invention also includes a first controllable switch 2. When the second controllable switch 3 is disconnected by the user and / or when the key control signal and generator control signal are not transmitted to the second controllable switch 3, the first controllable switch 2 is disconnected. This allows the driver's cab power loads connected to the first controllable switch 2 to lose power in an emergency by disconnecting the second controllable switch 3, thus improving vehicle safety.

[0036] Based on the above embodiments:

[0037] As an optional embodiment, the ignition switch is an ignition relay. One end of the coil of the ignition relay is connected to the output terminal of the second controllable switch 3, the other end of the coil is connected to ground, the common terminal is connected to the battery, the normally open terminal is connected to the ignition load, and the normally closed terminal is left floating. The coil is energized when the second controllable switch 3 is closed and a key control signal or generator control signal is received, and the common terminal is connected to the normally open terminal. When the second controllable switch 3 is open and / or no key control signal or generator control signal is received, the coil is not energized, and the common terminal is connected to the normally closed terminal.

[0038] In this invention, the ignition switch is an ignition relay. When the battery is powered on, the second controllable switch 3 is closed, and a key control signal or generator control signal is received, the coil of the ignition relay is energized, and the entire relay closes, allowing the ignition load to be powered and work. Conversely, when any of the three conditions—battery not powered on, second controllable switch 3 open, and no key control signal or generator control signal received—are not met, the coil of the ignition relay is not energized, and the entire relay opens, causing the ignition load to lose power and not work. This accurately controls the working state of the ignition load and achieves the purpose of immediately disconnecting the power supply to the ignition load when the second controllable switch 3 is open.

[0039] As an optional embodiment, it also includes:

[0040] The first fuse has its input terminal connected to the battery and its output terminal connected to the input terminal of the first controllable switch 2.

[0041] The invention also includes a first fuse, which is disposed between the battery and the first controllable switch 2. The first fuse can protect the safety of the circuit. When the circuit is in an overvoltage or overcurrent state, it can disconnect the entire circuit, ensuring the safety of the power system and thus ensuring the safety of the vehicle.

[0042] As an optional embodiment, the first controllable switch 2 is a controllable relay. The moving contact of the controllable relay is connected to the battery, one end of the coil of the controllable relay is connected to the output terminal of the second controllable switch 3, the other end of the coil is connected to ground, and the stationary contact is connected to the power supply load in the cab. When the second controllable switch 3 is closed and a key control signal or a generator control signal is received, the coil is energized and the moving contact is connected to the stationary contact; when the second controllable switch 3 is open and / or no key control signal or generator control signal is received, the coil is not energized and the moving contact is disconnected from the stationary contact.

[0043] In this invention, the first controllable switch 2 is a controllable relay. When the battery is powered on, the second controllable switch 3 is closed, and a key control signal or a generator control signal is received, the coil of the controllable relay is energized, and the entire relay is closed, causing the cab power supply load to work. Conversely, when any of the three conditions—battery not powered on, second controllable switch 3 open, and no key control signal or generator control signal received—are not met, the coil of the controllable relay is not energized, and the entire relay is open, causing the cab power supply load to lose power and not work. This accurately controls the working state of the cab power supply load and achieves the purpose of immediately disconnecting the power supply to the cab power supply load when the second controllable switch 3 is open.

[0044] As an optional embodiment, it also includes:

[0045] The first diode has its anode connected to the key power supply circuit and its cathode connected to the input terminal of the second controllable switch 3.

[0046] The second diode has its anode connected to the generator power supply circuit and its cathode connected to the input terminal of the second controllable switch 3.

[0047] The invention also includes a first diode and a second diode. The anodes of the two diodes are respectively connected to the key power supply circuit and the generator power supply circuit, and the cathodes are both connected to the input terminal of the second controllable switch 3. This can prevent the key control signal issued by the key power supply circuit from flowing back to the generator power supply circuit, and prevent the generator control signal issued by the generator power supply circuit from flowing back to the key power supply circuit, thus ensuring the stable operation of the power system and improving the reliability and stability of the solution.

[0048] As an optional embodiment, the cab power supply load is a preset power supply device. The input terminal of the preset power supply device is connected to the output terminal of the first controllable switch 2, and the output terminal is grounded so that it can be powered when the first controllable switch 2 is closed.

[0049] In this invention, the cab power supply load connected to the first controllable switch 2 is a preset electrical device. When the battery is powered on, the second controllable switch 3 is closed, and the first controllable switch 2 receives a key control signal or a generator control signal, the first controllable switch 2 closes, causing the preset electrical device to work. Conversely, when any of the three conditions—battery not powered on, second controllable switch 3 open, and first controllable switch 2 not receiving a key control signal or a generator control signal—are not met, the first controllable switch 2 opens, causing the preset electrical device to stop working. This accurately controls the working state of the preset electrical device and achieves the purpose of immediately disconnecting the power supply to the preset electrical device when the second controllable switch 3 opens.

[0050] As an optional embodiment, it also includes:

[0051] The input terminal of the second fuse and the second resistance wire is connected to the output terminal of the first controllable switch 2, and the output terminal is connected to the input terminal of the preset electrical device.

[0052] The invention also includes a second fuse, which is disposed between the preset electrical device and the first controllable switch 2. The second fuse can protect the safety of the circuit. When the circuit is in an overvoltage or overcurrent state, it can disconnect the entire circuit, ensuring the safety of the power system and thus ensuring the safety of the vehicle.

[0053] As an optional embodiment, it also includes:

[0054] The hazard alarm device is installed in the driver's cab. The input terminal of the hazard alarm device is connected to the battery, and the output terminal is grounded. It is used to issue a preset hazard alarm when the battery is powered on.

[0055] In this invention, the power control device also includes a hazard alarm device connected to the battery. When the battery is powered on, the hazard alarm device is activated and issues a preset hazard alarm. Even in the event of an emergency, the device remains activated and issues a hazard alarm, thereby improving vehicle safety.

[0056] It should be noted that in practical applications, hazard alarm devices can be alarm lights, marker lights, or other devices.

[0057] It should also be noted that, in practical applications, both hazard alarm devices and preset electrical devices are included in the cab power supply load.

[0058] It should also be noted that this invention controls the vehicle's power module by opening and closing the second controllable switch 3 in the driver's cab. During vehicle operation, in the event of a sudden malfunction or danger, closing the second controllable switch 3 will cause the first controllable switch 2 to open, cutting off the vehicle's power supply and bringing the vehicle to an emergency stop. Even when driving at night, the warning lights and hazard lights can still be illuminated for alert purposes. This solves the problem of being unable to disconnect the vehicle's power supply in emergency situations while driving a hazardous materials transport vehicle, improving safety and reliability.

[0059] As an optional embodiment, it also includes:

[0060] The third fuse has its input connected to the battery and its output connected to the input of the hazard alarm device.

[0061] The invention also includes a third fuse, which is located between the battery and the hazard alarm device. This third fuse can protect the circuit and disconnect the entire circuit when it is in an overvoltage or overcurrent state, thus ensuring the safety of the power system and the vehicle.

[0062] It should be noted that in practical applications, a first distribution box is installed inside the power supply unit. The first distribution box includes each ignition switch, a first fuse, and a third fuse. The function of the first distribution box is to distribute power to the ignition load, the preset electrical components, and the hazard alarm devices through each ignition switch, the first fuse, and the third fuse.

[0063] It should also be noted that in practical applications, a second distribution box is installed within the power supply unit. This second distribution box contains a second fuse, and the third fuse from the first distribution box is connected to it. Power is distributed to the hazard warning devices through the second distribution box. The first controllable switch 2 has its first terminal connected to the vehicle's main power supply and its second terminal connected to the second distribution box. Power is supplied to the first controllable switch 2 via the battery, causing it to engage and then transmit power to the second distribution box, thereby powering the entire vehicle system. The upper end of the first controllable switch 2 has a separate power supply line connected to the second distribution box. This line supplies power to the BCM (Battery Management System). In an emergency, even after the vehicle's main power supply is disconnected via the second controllable switch 3 module, the upper end of the first controllable switch 2 still supplies power to the BCM, allowing the hazard warning lights and side marker lights to illuminate normally, thus reducing risk.

[0064] Please refer to Figure 2 , Figure 2 This is a schematic diagram of a power control system provided by the present invention. The system includes a battery, a key power supply circuit, a generator power supply circuit, several ignition loads, a cab power supply load, and a power control device as described above. The power control device is connected to the battery, the key power supply circuit, the generator power supply circuit, each ignition load, and the cab power supply load.

[0065] The electronic control system provided in this embodiment corresponds to the method described above, and therefore has the same beneficial effects as the device described above. Therefore, for the embodiment of the electronic control system, please refer to the description of the embodiment of the device, which will not be repeated here.

[0066] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power supply master control device, characterized in that, include: Several ignition switches, each with its input terminal connected to a battery and its output terminal connected to a corresponding number of ignition loads; A first controllable switch, the input terminal of which is connected to the battery, and the output terminal of which is connected to the cab power supply load; A second controllable switch is installed inside the vehicle's driver's compartment. The input terminals of the second controllable switch are connected to the key power supply circuit and the generator power supply circuit, respectively, and the output terminals are connected to the control terminals of each ignition switch and the first controllable switch, respectively. The second controllable switch is used to control the first controllable switch and each ignition switch to close when it is closed according to user operation and receives a key control signal transmitted by the key power supply circuit or a generator control signal transmitted by the generator power supply circuit. When it is opened according to user operation and / or does not receive the key control signal and the generator control signal, it controls the first controllable switch and each ignition switch to open.

2. The power control device as described in claim 1, characterized in that, The ignition switch is an ignition relay. One end of the coil of the ignition relay is connected to the output terminal of the second controllable switch, the other end of the coil is connected to ground, the common terminal is connected to the battery, the normally open terminal is connected to the ignition load, and the normally closed terminal is left floating. The coil is energized when the second controllable switch is closed and receives the key control signal or the generator control signal, and the common terminal is connected to the normally open terminal. When the second controllable switch is open and / or does not receive the key control signal or the generator control signal, the coil is not energized, and the common terminal is connected to the normally closed terminal.

3. The power control device as described in claim 1, characterized in that, Also includes: The first fuse has its input terminal connected to the battery and its output terminal connected to the input terminal of the first controllable switch.

4. The power control device as described in claim 1, characterized in that, The first controllable switch is a controllable relay. The moving contact of the controllable relay is connected to the battery. One end of the coil of the controllable relay is connected to the output terminal of the second controllable switch, and the other end of the coil is connected to ground. The stationary contact is connected to the power supply load in the cab. When the second controllable switch is closed and the key control signal or the generator control signal is received, the coil is energized, and the moving contact is connected to the stationary contact. When the second controllable switch is open and / or the key control signal and the generator control signal are not received, the coil is not energized, and the moving contact is disconnected from the stationary contact.

5. The power control device as described in claim 1, characterized in that, Also includes: The first diode has its anode connected to the key power supply circuit and its cathode connected to the input terminal of the second controllable switch. The second diode has its anode connected to the generator power supply circuit and its cathode connected to the input terminal of the second controllable switch.

6. The power control device as described in claim 1, characterized in that, The cab power supply load is a preset electrical device. The input terminal of the preset electrical device is connected to the output terminal of the first controllable switch, and the output terminal is grounded so that it can be powered when the first controllable switch is closed.

7. The power control device as described in claim 6, characterized in that, Also includes: The second fuse has its input terminal connected to the output terminal of the first controllable switch, and its output terminal connected to the input terminal of the preset electrical device.

8. The power control device as described in any one of claims 1 to 7, characterized in that, Also includes: A hazard alarm device is installed in the driver's cab. The input terminal of the hazard alarm device is connected to the battery, and the output terminal is grounded. It is used to issue a preset hazard alarm when the battery is powered on.

9. The power control device as described in claim 8, characterized in that, Also includes: The third fuse has its input terminal connected to the battery and its output terminal connected to the input terminal of the hazard alarm device.

10. An electronic central control system, characterized in that, It includes a battery, a key power supply circuit, a generator power supply circuit, several ignition loads, a cab power supply load, and a power control device as described in any one of claims 1 to 7, wherein the power control device is connected to the battery, the key power supply circuit, the generator power supply circuit, each of the ignition loads, and the cab power supply load.

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