CN114914989A - Power management device, vehicle, and control method for power management device - Google Patents

Power management device, vehicle, and control method for power management device Download PDF

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Publication number
CN114914989A
CN114914989A CN202210609642.6A CN202210609642A CN114914989A CN 114914989 A CN114914989 A CN 114914989A CN 202210609642 A CN202210609642 A CN 202210609642A CN 114914989 A CN114914989 A CN 114914989A
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China
Prior art keywords
signal
power
voltage
module
control
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CN202210609642.6A
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Chinese (zh)
Inventor
宗诗皓
刘鑫浩
李怡康
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Shanghai Sensetime Lingang Intelligent Technology Co Ltd
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Shanghai Sensetime Lingang Intelligent Technology Co Ltd
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Priority to CN202210609642.6A priority Critical patent/CN114914989A/en
Publication of CN114914989A publication Critical patent/CN114914989A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The present disclosure provides a power management apparatus, a vehicle, and a control method of the power management apparatus, the power management apparatus including: the device comprises a voltage conversion module, a signal control module and a signal generation module. The voltage conversion module is used for responding to the situation that the power-on control signal is not received and stopping outputting the voltage signal. The signal control module is used for responding to the voltage signal which is not received and outputting a first control signal. The signal generation module is used for responding to the first control signal and not receiving a vehicle starting signal sent by the starting port and stopping generating the power-on control signal. According to the embodiment of the disclosure, power consumption can be avoided in the standby mode.

Description

Power management device, vehicle, and control method for power management device
Technical Field
The present disclosure relates to the field of power management technologies, and in particular, to a power management apparatus, a vehicle, and a control method of the power management apparatus.
Background
As the living standard of people is improved, vehicles are gradually becoming the preferred vehicles, and therefore, the problem of power supply of the power management system of the vehicles is beginning to become a topic of social concern. In order to supply power to various electric devices, a power management device is generally required to manage the discharging process of the vehicle-mounted storage battery, and when the electric devices do not need to work, the power management device can enter a low-power-consumption standby mode to reduce the energy consumption of the storage battery.
However, in the related art, although the power management device may enter the low power consumption standby mode, the controller that maintains operation in the low power consumption standby mode still consumes energy, and if the power management device is in the low power consumption standby mode for a long time, the situation that the storage battery is over-discharged still occurs, and the vehicle cannot be started normally.
Disclosure of Invention
In view of the above, an object of the present disclosure is to provide a power management apparatus, a vehicle, and a control method of the power management apparatus.
The embodiment of the present disclosure provides a power management device, which is applied to a vehicle, and includes:
the voltage conversion module is connected with the power supply device and used for responding to the situation that the power-on control signal is not received and stopping outputting the voltage signal;
the signal control module is connected with the voltage conversion module and used for responding to the situation that the second voltage is not received and outputting a first control signal;
and the signal generation module is respectively connected with the voltage conversion module, the signal control module and the starting port of the vehicle and used for responding to the vehicle starting signal which is received by the first control signal and is not received by the starting port and stopping generating the power-on control signal.
In the embodiment of the disclosure, under the condition that the first control signal output by the signal control module is received and the vehicle start signal sent by the start port of the vehicle is not received, the signal generation module does not generate the power-on control signal, so that the voltage conversion module stops outputting the voltage signal, at this time, the signal control module outputs the first control signal because the voltage signal is not received, so that the signal generation module also stops working, therefore, under the condition that the power management device stops working (enters the standby mode), energy is not consumed, and further, the condition that the storage battery is overdischarged due to the fact that the power management device is in the low-power standby mode for a long time can be avoided.
In a possible implementation, the signal control module is further configured to output the first control signal or the second control signal in response to receiving the voltage signal;
the signal generation module is further configured to generate the power-on control signal in response to receiving the second control signal or the vehicle start signal.
In the embodiment of the disclosure, after the vehicle is started (the vehicle start signal is generated), the working mode can be entered to output the voltage signal, and after the signal control module receives the voltage signal, the second control signal can be generated, so that the signal generation module continuously generates the power-on control signal.
In a possible embodiment, the voltage conversion module is further configured to convert a power supply voltage signal provided by the power supply device into the voltage signal in response to receiving the power-on control signal, so as to supply power to the electric device and the signal control module.
In the embodiment of the present disclosure, after receiving the power-on control signal, the voltage conversion module may convert a power voltage signal provided by the power supply device, and supply power to the electric equipment and the signal control module according to the converted voltage signal, that is, as long as the power-on control signal is generated, the power management device may supply power to the electric equipment and the signal control module, without being limited to whether the vehicle is in a starting state.
In one possible embodiment, the voltage signal is smaller than the supply voltage signal.
In the embodiment of the disclosure, the voltage conversion module is used for performing voltage reduction processing on the power supply voltage signal output by the power supply device, so that the power management device can supply power to various common electric equipment (such as mobile phones).
In one possible embodiment, the first control signal is a low level signal, and the second control signal is a high level signal.
In a possible embodiment, the signal generating module includes an or gate, a first input terminal of the or gate is connected to the signal control module, a second input terminal of the or gate is connected to the enable port, and an output terminal of the or gate is connected to the voltage converting module.
In the embodiment of the disclosure, since the signal generating module includes the or gate, and the or gate does not consume energy, it can be ensured that the power management device does not consume electric energy in the standby mode.
In a possible embodiment, the voltage conversion module comprises an enable input terminal, and the signal generation module comprises a first diode and a second diode;
the first connecting end of the first diode is connected with the signal control module, and the second connecting end of the first diode is connected with the enabling input end;
and a first connecting end of the second diode is connected with the starting port, and a second connecting end of the second diode is connected with the enabling input end.
In the embodiment of the disclosure, since the signal generating module includes the diode, not only the purpose of unidirectional conduction can be achieved, but also the isolation function can be achieved, that is, the input end and the output end are completely isolated, the output signal has no influence on the input end, that is, the condition that the low voltage input by the voltage converting module is pulled high or the high voltage input by the voltage converting module is pulled low can be avoided through the diode, and the signal generating module has the advantages of strong anti-interference capability and the like.
In one possible embodiment, the first connection end and the second connection end of the first diode correspond to an anode and a cathode of the first diode, respectively;
the first connection end and the second connection end of the second diode respectively correspond to the anode and the cathode of the second diode.
In one possible embodiment, the signal generation module further comprises a pull-down resistor;
the first connecting end of the pull-down resistor is connected with the enabling input end, and the second connecting end of the pull-down resistor is grounded.
In the embodiment of the disclosure, since the signal generating module includes the pull-down resistor, a stable low level can be provided for the input terminal, and the input terminal is prevented from being in a state with an uncertain level.
In a possible implementation, the signal generating module further includes a voltage dividing resistor;
the first connecting end of the divider resistor is connected with the second connecting end of the second diode, and the second connecting end of the divider resistor is connected with the enable input end of the voltage conversion module.
In the embodiment of the disclosure, the enable input terminal of the voltage conversion module is ensured to receive a proper voltage (e.g., 5V) through the voltage dividing resistor.
An embodiment of the present disclosure provides a vehicle, including:
the power supply device is used for outputting power supply signals, and the power supply signals comprise power supply voltage signals; and the number of the first and second groups,
in the power management device in the above embodiment, the power management device is connected to the power supply device, and is configured to receive the power signal output by the power supply device, convert the power voltage signal into a voltage signal, and supply power to an electrical device.
The embodiment of the disclosure provides a control method of a power management device, the power management device is applied to a vehicle, the power management device comprises a voltage conversion module, a signal control module and a signal generation module, the voltage conversion module is connected with a power supply device, the signal control module is connected with the voltage conversion module, the signal generation module is respectively connected with the voltage conversion module, the signal control module and a starting port of the vehicle, and the method comprises the following steps:
the signal generation module stops generating a power-on control signal in response to receiving a first control signal and not receiving a vehicle starting signal sent by the starting port;
the voltage conversion module stops outputting a voltage signal in response to not receiving the power-on control signal;
the signal control module continuously outputs the first control signal in response to not receiving the voltage signal.
In one possible embodiment, the method further comprises:
the signal generation module responds to a vehicle starting signal sent by the starting port, generates the power-on control signal and outputs the power-on control signal to the voltage conversion module;
and the voltage conversion module responds to the received power-on control signal and converts a power supply voltage signal provided by the power supply device into a voltage signal so as to supply power to the electric equipment and the signal control module.
In one possible embodiment, the method further comprises:
the signal control module outputs a second control signal to the signal generation module in response to receiving the voltage signal;
the signal generation module responds to the second control signal, continuously generates the power-on control signal, triggers the voltage conversion module to enter a working mode, and continuously outputs the voltage signal to supply power for the electric equipment and the signal control module.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly described below, and the drawings herein incorporated in and forming a part of the specification illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the technical solutions of the present disclosure. It is appreciated that the following drawings depict only certain embodiments of the disclosure and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
FIG. 1 illustrates a schematic structural diagram of a vehicle provided by an embodiment of the present disclosure;
FIG. 2 illustrates a functional block diagram of a power management device provided by an embodiment of the present disclosure;
fig. 3 illustrates a circuit schematic diagram of a signal generation module provided by an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a control method of a first power management device according to an embodiment of the disclosure;
fig. 5 is a flowchart illustrating a control method of a second power management device according to an embodiment of the disclosure;
fig. 6 shows a flowchart of a control method of a third power management device according to an embodiment of the disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure, presented in the figures, is not intended to limit the scope of the claimed disclosure, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The term "and/or" herein merely describes an associative relationship, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
With the improvement of living standard of people, vehicles are gradually becoming the preferred vehicles of people, so the problem of power supply of the power management system of the vehicles is beginning to become a topic of social concern. In order to supply power to various electric devices, a power management device is usually needed to manage the discharging process of the vehicle-mounted storage battery, and when the electric devices do not need to work, the power management device can enter a low-power-consumption standby mode to reduce the energy consumption of the storage battery.
However, in the related art, although the power management device may enter the low power consumption standby mode, the controller that maintains operation in the low power consumption standby mode still consumes energy, and if the power management device is in the low power consumption standby mode for a long time, the situation that the storage battery is over-discharged still occurs, and the vehicle cannot be started normally.
In view of the above problem, an embodiment of the present disclosure provides a power management device, including: the voltage conversion module is connected with the power supply device and used for stopping outputting the voltage signal in response to the fact that the power-on control signal is not received; the signal control module is connected with the voltage conversion module and used for responding to the situation that the voltage signal is not received and outputting a first control signal; and the signal generation module is respectively connected with the voltage conversion module, the signal control module and the starting port of the vehicle and is used for stopping generating the power-on control signal under the condition of responding to the first control signal and not receiving the vehicle starting signal sent by the starting port.
In the embodiment of the disclosure, under the condition that the first control signal output by the signal control module is received and the vehicle start signal sent by the start port of the vehicle is not received, the signal generation module does not generate the power-on control signal, so that the voltage conversion module stops outputting the voltage signal, at this time, the signal control module outputs the first control signal because the voltage signal is not received, so that the signal generation module also stops working, therefore, under the condition that the power management device stops working (enters the standby mode), energy is not consumed, and further, the condition that the storage battery is overdischarged due to the fact that the power management device is in the low-power standby mode for a long time can be avoided.
The above-mentioned drawbacks are the results of the inventor after practical and careful study, and therefore, the discovery process of the above-mentioned problems and the solutions proposed by the present disclosure to the above-mentioned problems should be the contribution of the inventor in the process of the present disclosure.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a vehicle according to an embodiment of the present disclosure. As shown in fig. 1, a vehicle 1000 includes a power management device 100, a start port 200, a power supply device 300, and an electric device 400. The power management device 100 is connected to the start port 200, and is configured to receive a vehicle start signal sent by the start port 200.
Specifically, the start port 200 may be a start button, for example, which issues a vehicle start signal (ACC signal) when a trigger operation for the start button is detected (e.g., long pressing of the start button for 3 seconds); the start port 200 may also be enabled by a key, such as by issuing a vehicle start signal upon detection of a start operation against the key (e.g., rotating the key to a certain position in a keyhole).
It can be understood that if the vehicle receives the vehicle start signal sent by the start port 200 in the flameout state, the vehicle is in the start state; if the vehicle starting signal sent by the starting port 200 is not received, the vehicle is continuously in a flameout state. In addition, if the vehicle receives a vehicle off signal in the on state, the vehicle enters a flameout state.
The power management device 100 is connected to the power supply device 300, and is configured to receive a power signal output by the power supply device 300, convert the power voltage signal into a voltage signal, and supply power to an electrical device. Specifically, the power supply device 300 may be an on-board battery of a vehicle, that is, a battery, and usually, the voltage corresponding to the power supply voltage signal output by the power supply device 300 is 12V, and the voltages required by some electric devices may be different, so that the power supply voltage signal output by the power supply device 300 needs to be converted by the power management device 100 and then output to the electric device 400 for supplying power.
Specifically, the power supply device 300 is configured to output a power supply signal. The power signal includes a power voltage signal and a power current signal. The supply voltage signal is used to provide a voltage and the supply current signal is used to provide a current.
The power management apparatus 100 is connected to the electric device 400, and is configured to provide an operating voltage to the electric device 400. Specifically, the electric device 400 may be a display screen, or may be a general-purpose electronic device, such as a mobile phone. The electronic device may be powered through a first interface (e.g., a USB interface), for example, without limitation. It should be noted that, in order to supply power to different types of electric devices, different types of interfaces may be provided in the power management apparatus.
Please refer to fig. 2, which is a schematic block diagram of a power management apparatus according to an embodiment of the disclosure. As shown in fig. 2, the power management apparatus 100 includes a voltage conversion module 110, a signal control module 120, and a signal generation module 130. The voltage conversion module 110 is connected to the power supply apparatus 300, and is configured to stop outputting the voltage signal in response to not receiving the power-on control signal. In some embodiments, the power-on control signal is a high-level signal, and in other embodiments, the power-on control signal may also be a low-level signal, which is not limited herein.
In a possible embodiment, the voltage conversion module 110 is further configured to convert a power voltage signal provided by the power supply apparatus 300 into the voltage signal in response to receiving the power-on control signal, so as to supply power to the electric device 400 and the signal control module 120.
In some embodiments, the voltage signal is less than the supply voltage signal. In this embodiment, the voltage signal is 5V, and in other embodiments, the voltage signal may be 3.3V, 6V, 9V, or the like. Therefore, the power voltage signal output by the power supply device 300 may also be referred to as a first voltage, and the voltage signal converted by the voltage conversion module 110 may be referred to as a second voltage, where the second voltage is smaller than the first voltage.
Illustratively, the voltage conversion module may include a voltage conversion circuit. In this embodiment, the voltage conversion circuit may be a voltage reduction circuit, for example, a BUCK circuit, that is, a voltage reduction process is performed on a power supply voltage signal output by the power supply device through the voltage conversion module, so that the power management device may supply power to various commonly used electric devices (such as mobile phones). In other embodiments, the voltage conversion circuit may be a BOOST circuit, for example, a BOOST circuit, that is, a 12V voltage is boosted and then output, and the boosted voltage signal may be 16V, 18V, or the like.
The signal control module 120 is connected to the voltage conversion module 110, and is configured to output a first control signal in response to not receiving the voltage signal. In a possible implementation, the signal control module 120 is further configured to output the first control signal or the second control signal in response to receiving the voltage signal.
Specifically, the signal Control module 120 may be a single chip microcomputer, a Micro Control Unit (MCU), an FPGA (Field Programmable Gate Array), or the like.
In some embodiments, the signal control module 120 may include a plurality of GPIO interfaces (General-purpose input/output interfaces). Illustratively, the GPIO interfaces may include a signal acquisition port, for example, the signal acquisition port may be connected to the power supply device 300 for acquiring power supply voltage information, power supply current information, power supply temperature information, and the like of the power supply device 300. The multiple GPIO interfaces may further include communication ports for signal transmission, for example, to output the first control signal and the second control signal in this embodiment. In this embodiment, the first control signal is a low level signal, that is, the first control signal is a logic 0, and the second control signal is a high level signal, that is, the second control signal is a logic 1.
The signal generating module 130 is connected to the voltage converting module 110, the signal control module 120, and the start port 200, respectively, and is configured to stop generating the power-on control signal in response to receiving the first control signal and not receiving a vehicle start signal sent by the start port 200.
In one possible implementation, the signal generating module 130 is further configured to generate the power-on control signal in response to receiving the second control signal or the vehicle start signal.
In the embodiment of the disclosure, after the vehicle is started (the vehicle start signal is generated), the working mode can be entered to output the voltage signal, and after the signal control module receives the voltage signal, the second control signal can be generated, so that the signal generation module continuously generates the power-on control signal, and at this time, the voltage conversion module can be in the working state to continuously output the voltage signal no matter whether the vehicle is flameout or not. That is, even if the vehicle is turned off after the vehicle is started, the power management apparatus can be operated to supply power as the electric device.
In addition, under the condition that the first control signal output by the signal control module is received and the vehicle starting signal sent by the starting port of the vehicle is not received, the signal generation module does not generate the power-on control signal, so that the voltage conversion module stops outputting the voltage signal, at the moment, the signal control module outputs the first control signal because the voltage signal is not received, so that the signal generation module also stops working, therefore, under the condition that the power management device stops working (enters a standby mode), energy is not consumed, and the condition that the storage battery is over-discharged due to the fact that the power management device is in the low-power standby mode for a long time can be avoided.
Illustratively, the signal generation module 130 includes an or gate. A first input terminal of the or gate is connected to the signal control module 120, a second input terminal of the or gate is connected to the start port 200, and an output terminal of the or gate is connected to the voltage conversion module 110. It should be noted that, since the or gate itself does not consume power, it can be ensured that the power management device does not consume power in the standby mode.
Specifically, please refer to fig. 3, which is a schematic circuit diagram of a signal generating module according to an embodiment of the disclosure. As shown in fig. 3, the signal generating module 130 includes a first diode D1 and a second diode D2. The first connection end 1 of the first diode D1 is connected to the control port G1 of the signal control module 120, and the second connection end 2 of the first diode D1 is connected to the enable input end G2 of the voltage conversion module 110; the first connection terminal 1 of the second diode D2 is connected to the start port 200, and the second connection terminal 2 of the second diode D2 is connected to the enable input terminal G2 of the voltage conversion module 110.
In this embodiment, because the signal generation module includes the diode, not only can reach the one-way electrically conductive purpose, can also play the effect of keeping apart, promptly, the input has realized keeping apart with the output completely, and output signal has no influence to the input, promptly, can avoid the low-voltage of voltage conversion module input to be pulled up or the condition that the high-voltage of input is pulled down to take place through the diode, has advantages such as interference killing feature is strong.
Specifically, the first connection terminal 1 of the first diode D1 corresponds to the anode of the first diode D1, and the second connection terminal 2 of the first diode D1 corresponds to the cathode of the first diode D1; the first connection terminal 1 of the second diode D2 corresponds to an anode of the second diode D2, and the second connection terminal 2 of the second diode D2 corresponds to a cathode of the second diode D2.
In some embodiments, the signal generation module 130 further includes a pull-down resistor R1. The first connection terminal 1 of the pull-down resistor R1 is connected to the enable input terminal G2 of the voltage converting module 110, and the second connection terminal 2 of the pull-down resistor R1 is grounded.
In this embodiment, since the signal generating module includes the pull-down resistor, a stable low level can be provided for the input terminal, and the input terminal is prevented from being in a state where the level is uncertain.
In other embodiments, since the voltage received by the enable port 200 is 12V and the voltage required by the enable input terminal G2 of the voltage conversion module 110 is 5V, a voltage dividing resistor is required to ensure that the enable input terminal G2 of the voltage conversion module 110 receives a proper voltage (e.g., 5V). Specifically, the signal generating module 130 further includes a voltage dividing resistor R2. The first connection terminal 1 of the voltage dividing resistor R2 is connected to the second connection terminal 2 of the second diode D2, and the second connection terminal 2 of the voltage dividing resistor R2 is connected to the enable input terminal G2 of the voltage conversion module 110.
The working principle of the signal generation module is described below.
Referring to fig. 3 again, when the second control signal sent from the control port G1 of the signal control module 120 is received, the first diode D1 is turned on, and at this time, the node N1 is at a high level, that is, the signal generation module 130 generates the power-on control signal, the enable input terminal G2 is enabled, and the voltage conversion module 110 outputs the voltage signal after power-on operation; under the condition of receiving a vehicle starting signal sent by the starting port 200, the second diode D2 is turned on, and at this time, the node N2 is at a high level, that is, the signal generating module 130 generates a power-on control signal, the enable input terminal G2 is active, and the voltage converting module 110 outputs a voltage signal by power-on operation; in the case of receiving the first control signal from the control port G1 of the signal control module 120 and not receiving the vehicle start signal from the start port 200, the first diode D1 and the second diode D2 are turned off, and at this time, the node N1 and the node N2 are at a low level, that is, the voltage conversion module 110 stops generating the power-on control signal, and the voltage conversion module 110 stops outputting the voltage signal.
In this embodiment, the specific circuit of each module is not limited as long as each module can realize the corresponding function. In addition, each module may be integrated on the same circuit substrate and disposed in the same housing, or integrated on different circuit substrates and disposed in different housings, and may be combined according to actual conditions, which is not limited herein.
Referring to fig. 4, a flowchart of a control method of a first power management device provided in an embodiment of the present disclosure is shown, where the method includes the following steps S101 to S103:
and S101, the signal generation module stops generating the power-on control signal in response to the fact that the first control signal is received and the vehicle starting signal sent by the starting port is not received.
For example, referring to fig. 2 again, after receiving the first control signal output by the signal control module 120 and not receiving the vehicle start signal sent by the start port 200, the signal generation module 130 stops generating the power-on control signal, so that the voltage conversion module 110 stops outputting the voltage signal.
Specifically, the power management device 100 includes a voltage conversion module 110, a signal control module 120, and a signal generation module 130, where the voltage conversion module 110 is connected to the power supply device 300, the signal control module 120 is connected to the voltage conversion module 110, and the signal generation module 130 is connected to the voltage conversion module 110, the signal control module 120, and the start port 200 of the vehicle, respectively. The power-on control signal is a high level signal, that is, the power-on control signal is a logic 1.
S102, the voltage conversion module stops outputting voltage signals in response to the fact that the power-on control signals are not received.
Specifically, the voltage conversion module 110 stops outputting the voltage signal after not receiving the power-on control signal generated by the signal generation module 130.
S103, the signal control module continuously outputs the first control signal in response to the voltage signal not being received.
Specifically, the signal control module 120 continuously outputs the first control signal after not receiving the voltage signal output by the voltage conversion module 110, and sends the first control signal to the signal generation module 130. The first control signal is a low level signal, that is, the first control signal is a logic 0.
In a possible implementation manner, referring to fig. 5, a flowchart of a control method for a second power management device provided in an embodiment of the present disclosure is shown, where the method further includes the following steps S201 to S202:
s201, the signal generation module responds to the vehicle starting signal sent by the starting port, generates the power-on control signal and outputs the power-on control signal to the voltage conversion module.
When the vehicle is in a starting state, the starting port 200 of the vehicle will send a vehicle starting signal, and the signal generating module 130 will generate a power-on control signal after receiving the vehicle starting signal, and output the power-on control signal to the voltage converting module 110.
And S202, the voltage conversion module responds to the power-on control signal and converts a power supply voltage signal provided by the power supply device into a voltage signal so as to supply power to the electric equipment and the signal control module.
Illustratively, after the voltage conversion module 110 receives the power-on control signal generated by the signal generation module 130, it converts the power voltage signal provided by the power supply device 120 into a voltage signal and outputs the voltage signal to power the electric device 400 and the signal control module 120.
In a possible implementation manner, referring to fig. 6, which is a flowchart of a control method of a third power management device provided in an embodiment of the present disclosure, the method further includes the following steps S301 to S302:
s301, the signal control module outputs a second control signal to the signal generation module in response to receiving the voltage signal.
For example, the signal control module 120 outputs the second control signal after receiving the voltage signal, and sends the second control signal to the signal generation module 130. The second control signal is a high level signal, that is, the second control signal is a logic 1.
S302, the signal generation module responds to the second control signal, continuously generates the power-on control signal, triggers the voltage conversion module to enter a working mode, and continuously outputs the voltage signal to supply power for the electric equipment and the signal control module.
For example, after receiving the second control signal, the signal generating module 130 continuously generates a power-on control signal and sends the power-on control signal to the voltage converting module 110 to control the voltage converting module 110 to enter the operating mode, and at the same time, the voltage converting module 110 continuously outputs the voltage signal to power the electric device 400 and the signal controlling module 120.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the automatic driving system or the elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present disclosure, which are used for illustrating the technical solutions of the present disclosure and not for limiting the same, and the scope of the present disclosure is not limited thereto, and although the present disclosure is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive of the technical solutions described in the foregoing embodiments or equivalent technical features thereof within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (14)

1. A power management device for use in a vehicle, the power management device comprising:
the voltage conversion module is connected with the power supply device and used for responding to the situation that the power-on control signal is not received and stopping outputting the voltage signal;
the signal control module is connected with the voltage conversion module and used for responding to the situation that the voltage signal is not received and outputting a first control signal;
and the signal generation module is respectively connected with the voltage conversion module, the signal control module and the starting port of the vehicle and used for responding to the vehicle starting signal which is received by the first control signal and is not received by the starting port and stopping generating the power-on control signal.
2. The power management device of claim 1, wherein the signal control module is further configured to output the first control signal or the second control signal in response to receiving the voltage signal;
the signal generation module is further configured to generate the power-on control signal in response to receiving the second control signal or the vehicle start signal.
3. The power management device according to claim 1 or 2, wherein the voltage conversion module is further configured to convert a power voltage signal provided by the power supply device into the voltage signal in response to receiving the power-on control signal, so as to supply power to the electric equipment and the signal control module.
4. The power management device of claim 3, wherein the voltage signal is less than the supply voltage signal.
5. The power management device of claim 2, wherein the first control signal is a low signal and the second control signal is a high signal.
6. The power management device of claim 1, wherein the signal generating module comprises an or gate, a first input terminal of the or gate is connected to the signal control module, a second input terminal of the or gate is connected to the enable port, and an output terminal of the or gate is connected to the voltage converting module.
7. The power management device of claim 1, wherein the voltage conversion module comprises an enable input, and the signal generation module comprises a first diode and a second diode;
the first connecting end of the first diode is connected with the signal control module, and the second connecting end of the first diode is connected with the enabling input end;
and a first connecting end of the second diode is connected with the starting port, and a second connecting end of the second diode is connected with the enabling input end.
8. The power management device of claim 7, wherein the first and second connection terminals of the first diode correspond to an anode and a cathode of the first diode, respectively;
the first connection end and the second connection end of the second diode respectively correspond to the anode and the cathode of the second diode.
9. The power management device of claim 7, wherein the signal generation module further comprises a pull-down resistor;
the first connecting end of the pull-down resistor is connected with the enabling input end, and the second connecting end of the pull-down resistor is grounded.
10. The power management device of claim 9, wherein the signal generation module further comprises a voltage divider resistor;
the first connecting end of the divider resistor is connected with the second connecting end of the second diode, and the second connecting end of the divider resistor is connected with the enable input end of the voltage conversion module.
11. A vehicle, characterized by comprising:
the power supply device is used for outputting power supply signals, and the power supply signals comprise power supply voltage signals; and the number of the first and second groups,
the power management device as claimed in any one of claims 1 to 10, wherein the power management device is connected to the power supply device, and is configured to receive the power signal output by the power supply device, and convert the power voltage signal into a voltage signal to supply power to an electrical device.
12. A control method of a power management device is characterized in that the power management device is applied to a vehicle and comprises a voltage conversion module, a signal control module and a signal generation module, wherein the voltage conversion module is connected with a power supply device, the signal control module is connected with the voltage conversion module, and the signal generation module is respectively connected with the voltage conversion module, the signal control module and a starting port of the vehicle, and the method comprises the following steps:
the signal generation module stops generating a power-on control signal in response to receiving a first control signal and not receiving a vehicle starting signal sent by the starting port;
the voltage conversion module responds to the situation that the power-on control signal is not received and stops outputting a voltage signal;
the signal control module continuously outputs the first control signal in response to not receiving the voltage signal.
13. The control method according to claim 12, characterized in that the method further comprises:
the signal generation module responds to a vehicle starting signal sent by the starting port, generates the power-on control signal and outputs the power-on control signal to the voltage conversion module;
and the voltage conversion module responds to the received power-on control signal and converts a power supply voltage signal provided by the power supply device into a voltage signal so as to supply power to the electric equipment and the signal control module.
14. The control method according to claim 13, characterized in that the method further comprises:
the signal control module outputs a second control signal to the signal generation module in response to receiving the voltage signal;
and the signal generation module responds to the received second control signal, continuously generates the power-on control signal, triggers the voltage conversion module to enter a working mode, and continuously outputs the voltage signal to supply power for the electric equipment and the signal control module.
CN202210609642.6A 2022-05-31 2022-05-31 Power management device, vehicle, and control method for power management device Pending CN114914989A (en)

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Application Number Priority Date Filing Date Title
CN202210609642.6A CN114914989A (en) 2022-05-31 2022-05-31 Power management device, vehicle, and control method for power management device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210609642.6A CN114914989A (en) 2022-05-31 2022-05-31 Power management device, vehicle, and control method for power management device

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Publication Number Publication Date
CN114914989A true CN114914989A (en) 2022-08-16

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