Power supply control circuit, system, and vehicle

Abstract

The present disclosure relates to a power supply control circuit, system and vehicle, and relates to the field of vehicles. The power supply control circuit comprises a first switch, a second switch and a control device; the first switch, the second switch and the control device are connected; the control device, a first load module of the vehicle and a storage battery of the vehicle are connected; the control device is connected with a second load module of the vehicle through the second switch; the control device is used for controlling the power supply state of the storage battery to the second load module according to the first switch state of the first switch and the second switch state of the second switch; wherein the first load module comprises a constant power load of the vehicle, and the second load module comprises other loads of the vehicle. Through the power supply control circuit, the power supply of the storage battery of the vehicle to the loads other than the constant power load can be stopped when the vehicle stops running, so as to avoid the power loss of the storage battery of the vehicle and affect the next start of the vehicle.

Description

Technical Field

[0001] This disclosure relates to the field of vehicles, and more specifically, to a power control circuit, system, and vehicle. Background Technology

[0002] Typically, heavy-duty and medium-duty trucks are equipped with an external power switch. If the vehicle is not used for an extended period, this switch needs to be turned off to prevent excessive current from draining the battery. Currently, the driver manually turns off this external power switch, but there is a risk that the driver might forget to do so, leading to battery drain. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this disclosure provides a power control circuit, system and vehicle.

[0004] According to a first aspect of the present disclosure, a power control circuit is provided, the power control circuit comprising: a first switch, a second switch, and a control device; First switch, second switch, and control device; The first switch and the second switch are connected to the control device; The control device, the vehicle's first load module, and the vehicle's battery are connected. The control device is connected to the vehicle's second load module via the second switch; The control device is used to control the power supply state of the battery to the second load module according to the first switch state of the first switch and the second switch state of the second switch; wherein, the first load module includes the constant power load of the vehicle, and the second load module includes other loads of the vehicle.

[0005] Optionally, the power control circuit further includes: a current monitoring module; The battery is connected to the current monitoring module and is used to power the current monitoring module. The input terminal of the current monitoring module is connected to the first switch, and the output terminal of the current monitoring module is connected to the control device. The current monitoring module is used to monitor the first current signal flowing through the first switch and determine the state of the first switch based on the first current signal.

[0006] Optionally, the current monitoring module is further configured to determine that the first switch is in a closed state when the first current signal is greater than or equal to the first current threshold, and to determine that the first switch is in an open state when the first current signal is less than the first current threshold.

[0007] Optionally, the power control circuit further includes: a current sensor; The current sensor is connected to the battery, the first load module, and the current monitoring module respectively. The current sensor is used to acquire the second current signal output by the battery and send the second current signal to the current monitoring module. The current monitoring module is also used to determine the state of the first switch based on the second current signal.

[0008] Optionally, the current monitoring module is further configured to send current abnormality information to the vehicle when the second current signal is greater than the second current threshold, so that the driver of the vehicle can disconnect the first switch; The current monitoring module is also used to determine that the first switch is in an open state after the driver disconnects the first switch.

[0009] Optionally, the first switch is the main power switch inside the vehicle, and the second switch is the main power switch outside the vehicle.

[0010] Optionally, it is characterized in that, The constant electrical loads include the vehicle's instrument panel and anti-theft system.

[0011] The other loads include the vehicle's starter, engine, fuel pump, ECU, and air conditioning system.

[0012] Optionally, the control device is further configured to: When the first switch is in the open state, the second switch is in the closed state, and the duration of obtaining the first switch state reaches a preset duration, the battery stops supplying power to the second load module.

[0013] or, When the battery stops supplying power to the second load module, the second switch is in the closed state, and the first switch is in the closed state, the battery is then supplied with power to the second load module.

[0014] According to a second aspect of the present disclosure, a power control system is provided, including the power control circuit described in the first aspect of the present disclosure, a battery, a first load module, and a second load module.

[0015] According to a third aspect of the present disclosure, a vehicle is provided, including the power control system described in the second aspect of the present disclosure.

[0016] The above technical solution includes a first switch, a second switch, and a control device. The first switch and the second switch are connected to the control device. The control device, the vehicle's first load module, and the vehicle's battery are connected. The control device is connected to the vehicle's second load module via the second switch. The control device controls the battery's power supply to the second load module based on the first switch's first switch state and the second switch's second switch state. The first load module includes the vehicle's constant-power loads, and the second load module includes other loads of the vehicle. Through this power control circuit, the vehicle battery's power supply to loads other than the constant-power loads can be stopped when the vehicle is stopped, to prevent the vehicle's battery from running out of power and affecting the vehicle's next start.

[0017] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a power control circuit according to an exemplary embodiment.

[0019] Figure 2 This is a schematic diagram of a power control circuit according to an exemplary embodiment.

[0020] Figure 3 This is a schematic diagram of a power control circuit according to an exemplary embodiment.

[0021] Explanation of reference numerals in the attached figures 100 - First switch 200 - Second switch 300-Control device; 400-First load module 500 - Second load module; 600 - Battery 700 - Current Monitoring Module 800 - Current Sensor Detailed Implementation The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this disclosure. In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the upper, lower, top, and bottom of the corresponding component in the direction of gravity during its use; "inner" and "outer" refer to the inner and outer dimensions relative to the outline of the component or structure itself. Furthermore, it should be noted that terms such as "first," "second," and "third" are used to distinguish one element from another and do not have sequential or importance implications. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same elements.

[0022] Figure 1 This is a schematic diagram of a power control circuit according to an exemplary embodiment, such as... Figure 1 As shown, the power control circuit includes: a first switch 100, a second switch 200, and a control device 300; The first switch 100 and the second switch 200 are connected to the control device 300; The control device 300, the vehicle's first load module 400, and the vehicle's battery 600 are connected. The control device 300 is connected to the vehicle's second load module 500 via the second switch 200; The control device 300 is used to control the power supply state of the battery 600 to the second load module 500 according to the first switch state of the first switch 100 and the second switch state of the second switch 200; wherein the first load module 400 includes the constant power load of the vehicle, and the second load module 500 includes other loads of the vehicle.

[0023] Optionally, the first switch 100 is the main power switch for the vehicle interior, and the second switch 200 is the main power switch for the vehicle exterior.

[0024] For example, due to safety, energy conservation, and regulatory compliance requirements, transport vehicles typically require the external power switch to be disconnected even after the user has turned off the main power switch inside the vehicle. This internal power switch is usually the vehicle's ignition switch. After the internal power switch is disconnected, some loads powered by the vehicle's battery experience minor power consumption. On the one hand, if the vehicle is parked for an extended period, this residual current can lead to battery depletion, affecting the next start, or causing the vehicle to start unexpectedly due to vibration or misoperation while parked. On the other hand, regulations mandate "disconnection of power when not in use" for some hazardous materials transport vehicles (such as tankers and chemical trucks), requiring the external power switch to be turned off as a final power disconnection measure to ensure the safety of the vehicle and transported goods. Therefore, to avoid battery depletion caused by the user forgetting to turn off the external power switch, if the user forgets to turn off the external power switch even when the internal power switch is off, the power supply from the vehicle battery to loads other than the vehicle's normally powered loads can be disconnected via a control device. Figure 1 As shown, the first switch 100 can be the main power switch inside the vehicle. When the first switch 100 is open, it indicates that the vehicle user has stopped using the vehicle. The second switch 200 can be the main power switch outside the vehicle. When the user leaves the vehicle, the second switch 200 needs to be manually turned off so that the battery 600 stops supplying power to the second load module 500. If the first switch state of the first switch 100 is open, and if the user leaves the vehicle without turning off the second switch 200, the control device 300 can be used to disconnect the battery 600 from supplying power to the second load module 500. In summary, the control device 300 can control the power supply state of the battery 600 to the second load module 500 based on the acquired first switch state of the first switch 100 and the second switch state of the second switch 200.

[0025] Optionally, the constant electrical load includes the vehicle's instrument panel and anti-theft system.

[0026] The other loads include the vehicle's starter, engine, fuel pump, ECU, and air conditioning system.

[0027] For example, a vehicle typically includes a constant-power load that needs to be powered by the battery 600. It is understood that the constant-power load is usually an uninterrupted power load that can maintain vehicle safety and normal operation when the vehicle is started again. For example, the constant-power load may include the vehicle's instruments (such as odometer, tachometer, fuel gauge, clock, etc.), anti-theft system (anti-theft device, positioning device, etc.), etc. The other loads may include the vehicle's starter, engine, fuel pump, ECU, air conditioning system, braking system, body control system, lighting system, external circuits, etc. This disclosure does not limit the number and type of constant-power loads and non-constant-power loads of the vehicle, which can be determined by the vehicle manufacturer during production.

[0028] The power control circuit, as described above, includes a first switch, a second switch, and a control device. The first switch and the second switch are connected to the control device. The control device, a first load module of the vehicle, and the vehicle's battery are connected. The control device is connected to the vehicle's second load module via the second switch. The control device controls the battery's power supply to the second load module based on the first switch's first switch state and the second switch's second switch state. The first load module includes the vehicle's constant-power loads, and the second load module includes other loads of the vehicle. This power control circuit can stop the vehicle battery from supplying power to loads other than the constant-power loads when the vehicle is stopped, thus preventing the vehicle's battery from running out of power and affecting the vehicle's next start.

[0029] Figure 2 This is a schematic diagram of a power control circuit according to an exemplary embodiment, such as... Figure 2 As shown, the power control circuit also includes: a current monitoring module 700; The storage battery 600 is connected to the current monitoring module 700 and is used to supply power to the current monitoring module 700. The input terminal of the current monitoring module 700 is connected to the first switch 100, and the output terminal of the current monitoring module 700 is connected to the control device 300. The current monitoring module 700 is used to monitor the first current signal flowing through the first switch 100 and determine the state of the first switch based on the first current signal.

[0030] Optionally, the current monitoring module is further configured to determine that the first switch is in a closed state when the first current signal is greater than or equal to the first current threshold, and to determine that the first switch is in an open state when the first current signal is less than the first current threshold.

[0031] For example, when the first switch 100 is in the closed state, the vehicle is powered on; when the first switch 100 is in the open state, the vehicle is powered off. The current flowing through the first switch 100 changes depending on whether it is closed or open. Therefore, the current monitoring module 700 can monitor the first current signal flowing through the first switch 100, determine the first switch state based on the first current signal, and send the first switch state to the control device 300 after determining it, so that the control device 300 controls the power supply state of the battery 600 to the second load module 500 based on the first switch state and the second switch state of the second switch 200. For example, when the first current signal detected by the current monitoring module 700 is greater than or equal to a first current threshold, it can be determined that the vehicle is in operation and the first switch state is closed; when the first current signal is less than the first current threshold, it is determined that the first switch state is open.

[0032] Figure 3 This is a schematic diagram of a power control circuit according to an exemplary embodiment, such as... Figure 3 As shown, the power control circuit also includes a current sensor 800; The current sensor 800 is connected to the battery 600, the first load module 400, and the current monitoring module 700 respectively. The current sensor 800 is used to acquire the second current signal output by the battery 600 and send the second current signal to the current monitoring module 700. The current monitoring module 700 is also used to determine the state of the first switch based on the second current signal.

[0033] Optionally, the current monitoring module 700 is further configured to send current abnormality information to the vehicle when the second current signal is greater than the second current threshold, so that the driver of the vehicle can disconnect the first switch; The current monitoring module is also used to determine that the first switch is in the off state after the driver disconnects it.

[0034] For example, during vehicle operation (i.e., when the first switch is closed), when the vehicle current is normal, the control device 300 is in a conducting state. At this time, the vehicle's battery 600 can stably supply power to the first load module 400 and the second load module 500. However, during vehicle operation, its electrical equipment may experience abnormal increases in the vehicle's current due to faults or circuit aging. To avoid accidents caused by abnormally increased vehicle current, the driver should stop the vehicle immediately and disconnect the battery's power supply to the loads for fault detection. It is understood that the power supply to the vehicle's loads cannot be directly disconnected while the vehicle is in motion, otherwise it may cause a traffic accident. Therefore, if the vehicle's overall current is abnormal during operation, the vehicle should first be kept in a non-starting state. In summary, in one possible embodiment, to avoid abnormal wear and tear on the battery 600, damage to the vehicle load, and traffic accidents caused by abnormal vehicle current, the current monitoring module 700 can monitor the second current signal acquired by the current sensor 800. When the second current signal exceeds the second current threshold, it sends an abnormal current information to the vehicle, allowing the driver to disconnect the first switch (even if the vehicle is not started) upon receiving the abnormal information. The current monitoring module 700 can determine that the first switch is in an open state after the driver disconnects it. It is understood that the second current threshold can be the maximum current supplied by the battery 600 to the vehicle's load under normal conditions.

[0035] Optionally, the control device 300 is also used for: When the first switch is in the open state, the second switch is in the closed state, and the duration of obtaining the first switch state reaches a preset duration, the battery 600 stops supplying power to the second load module 500. or, When the battery 600 stops supplying power to the second load module 500, the second switch is in the closed state, and the first switch is in the closed state, the battery 600 supplies power to the second load module 500.

[0036] For example, when the second switch is in the closed state, the battery 600 can supply power to the second load module 500. When the second load module 500 is energized, the vehicle can be started when the first switch is in the closed state. Therefore, when the first switch is in the open state and the second switch is in the closed state, it indicates that the user has not left the vehicle or the user did not disconnect the second switch 200 when leaving the vehicle. Therefore, in order to avoid power loss of the vehicle battery 600, the control device 300 can control the battery 600 to stop supplying power to the second load module 500. Furthermore, when the first switch is in the off state, the vehicle user temporarily stops using the vehicle. However, to avoid the control device 300 frequently disconnecting or reconnecting the battery 600 to supply power to the second load module 500 due to the short duration of the vehicle user's temporary cessation of vehicle use, the control device 300 can be used to control the battery 600 to stop supplying power to the second load module 500 when the first switch is in the off state, the second switch is in the closed state, and the duration of the first switch state reaches a preset duration. This indicates that the vehicle user may not use the vehicle immediately. In this case, the control device 300 can be used to control the battery 600 to stop supplying power to the second load module 500.

[0037] Furthermore, it is understood that if the battery 600 stops supplying power to the second load module 500, the second switch should be in a closed state if the vehicle is to be started via the first switch 100. Therefore, when the battery 600 stops supplying power to the second load module 500, the second switch is in a closed state, and the first switch is in a closed state, the control device can control the battery 600 to supply power to the second load module 500.

[0038] In one possible embodiment, this disclosure also provides a power control system, including the power control circuit described above, a battery 600, a first load module 400, and a second load module 500.

[0039] Optionally, this disclosure also provides a vehicle including the power control system described above.

[0040] The power control circuit, as described above, includes a first switch, a second switch, and a control device. The first switch and the second switch are connected to the control device. The control device, a first load module of the vehicle, and the vehicle's battery are connected. The control device is connected to the vehicle's second load module via the second switch. The control device controls the battery's power supply to the second load module based on the first switch's first switch state and the second switch's second switch state. The first load module includes the vehicle's constant-power loads, and the second load module includes other loads of the vehicle. This power control circuit can stop the vehicle battery from supplying power to loads other than the constant-power loads when the vehicle is stopped, thus preventing the vehicle's battery from running out of power and affecting the vehicle's next start.

[0041] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0043] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A power supply control circuit, characterized in that, The power control circuit includes: a first switch, a second switch, and a control device; The first switch and the second switch are connected to the control device; The control device, the vehicle's first load module, and the vehicle's battery are connected. The control device is connected to the vehicle's second load module via the second switch; The control device is used to control the power supply state of the battery to the second load module according to the first switch state of the first switch and the second switch state of the second switch; wherein, the first load module includes the constant power load of the vehicle, and the second load module includes other loads of the vehicle.

2. The power control circuit according to claim 1, characterized in that, The power control circuit further includes: a current monitoring module; The battery is connected to the current monitoring module and is used to power the current monitoring module. The input terminal of the current monitoring module is connected to the first switch, and the output terminal of the current monitoring module is connected to the control device. The current monitoring module is used to monitor the first current signal flowing through the first switch and determine the state of the first switch based on the first current signal.

3. The power control circuit according to claim 2, characterized in that, The current monitoring module is further configured to determine that the first switch is in a closed state when the first current signal is greater than or equal to the first current threshold, and to determine that the first switch is in an open state when the first current signal is less than the first current threshold.

4. The power control circuit according to claim 2, characterized in that, The power control circuit also includes: a current sensor; The current sensor is connected to the battery, the first load module, and the current monitoring module respectively. The current sensor is used to acquire the second current signal output by the battery and send the second current signal to the current monitoring module. The current monitoring module is also used to determine the state of the first switch based on the second current signal.

5. The power control circuit according to claim 4, characterized in that, The current monitoring module is also used to send current abnormality information to the vehicle when the second current signal is greater than the second current threshold, so that the driver of the vehicle can disconnect the first switch. The current monitoring module is also used to determine that the first switch is in an open state after the driver disconnects the first switch.

6. The power control circuit according to claim 1, characterized in that, The first switch is the main power switch for the vehicle interior, and the second switch is the main power switch for the vehicle exterior.

7. The power control circuit according to claim 1, characterized in that, The constant electrical loads include the vehicle's instrument panel and anti-theft system; The other loads include the vehicle's starter, engine, fuel pump, ECU, and air conditioning system.

8. The power control circuit according to any one of claims 1 to 5, characterized in that, The control device is also used for: When the first switch is in the open state, the second switch is in the closed state, and the duration of obtaining the first switch state reaches a preset duration, the battery stops supplying power to the second load module. or, When the battery stops supplying power to the second load module, the second switch is in the closed state, and the first switch is in the closed state, the battery is then supplied with power to the second load module.

9. A power supply control system, characterized in that, include: The power control circuit, the storage battery, the first load module, and the second load module as described in any one of claims 1 to 7.

10. A vehicle, characterized in that, include: The power control system according to claim 9.

Images