CN111546998A - Power distribution device and method and vehicle - Google Patents
Power distribution device and method and vehicle Download PDFInfo
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- CN111546998A CN111546998A CN202010258209.3A CN202010258209A CN111546998A CN 111546998 A CN111546998 A CN 111546998A CN 202010258209 A CN202010258209 A CN 202010258209A CN 111546998 A CN111546998 A CN 111546998A
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- 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
- B60R16/023—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 transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- 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
- B60R16/023—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 transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a power distribution device, a power distribution method and a vehicle. The switch module is electrically connected with the energy storage module, the switch module is electrically connected with the control module, the control module comprises a digital processing unit and a voltage holding circuit, the voltage holding circuit is used for keeping power output when the digital processing unit is reset, the diagnosis module is connected with the switch module and the control module, and the diagnosis module is used for diagnosing faults in the switch module and the control module. The remote control module is connected with the control module and is used for remotely controlling the control module. The device can carry out voltage output maintenance, power supply distribution and voltage monitoring through the control module, can detect the output state in real time, and can realize the stability of circuit output through a voltage output maintenance circuit and the like.
Description
Technical Field
The invention relates to the field of power distribution, in particular to a power distribution device, a power distribution method and a vehicle.
Background
The automatic driving becomes an important direction for the technical development of the modern automobile industry and the electronic and electrical industry, the combination of the automatic driving and new energy can reduce the environmental pollution and improve the road traffic capacity in the future, so that the technology aiming at all aspects of the automatic driving becomes a key research field of the high and new technology at present. The unmanned vehicle can be widely applied to the scenes of future travel, cargo transportation and the like.
At present, unmanned vehicles realize an automatic driving function based on devices added to the existing mass-produced manned vehicles, the added devices mainly comprise various devices such as laser radars, cameras, millimeter wave radars, computing units and wire control devices, and a power distribution unit is required to supply power to the devices.
The current power supply distributor of the unmanned vehicle mainly comprises two types, one type is a mechanical power supply distributor consisting of a hardware button switch and a relay. The power supply distributor can not meet the functions of automatic power on and off, power supply monitoring and the like. In addition, on the basis of the mechanical switch, the mechanical switch is controlled by a single chip microcomputer, so that remote control can be realized, and the problem of power-on time sequences of different devices is solved. However, the reset of the singlechip can cause output interruption, and the stable operation of the automatic driving system is influenced. Current equipment such as laser radar, industrial computer belong to non-on-vehicle standard equipment, use foretell power distributor can appear because voltage fluctuation leads to equipment such as industrial computer to reset the problem of restarting, and these problems exist great risk to autopilot system safety and stability work.
Disclosure of Invention
The invention provides a power distribution device, a power distribution method and a vehicle, which can keep the output voltage stable when a single chip microcomputer is reset, improve the stability of the power distribution device and improve the safety of automatic driving.
In one aspect, the present invention provides a power distribution method, where the power distribution method includes: the system comprises a switch module, a control module, an energy storage module, a remote control module and a diagnosis module;
the switch module is electrically connected with the energy storage module, and the energy storage module is used for maintaining output voltage when instantaneous power failure occurs;
the switch module is electrically connected with the control module, and the control module is used for controlling the on-off of a switch in the switch module and distributing power supplies;
the control module comprises a digital processing unit and a voltage holding circuit, the digital processing unit is electrically connected with the voltage holding circuit, the voltage holding circuit is electrically connected with the switch module, and the voltage holding circuit is used for holding power supply output when the digital processing unit is reset;
the diagnosis module is electrically connected with the switch module and the control module and is used for diagnosing faults in the switch module and the control module;
the remote control module is connected with the control module and is used for remotely controlling the control module.
Another aspect provides a power distribution method, including:
the control module acquires a current starting mode;
if the current starting mode is cold starting, the switch in the switch module is in a disconnected state during starting;
after the starting is finished, the control module switches the states of all switches in the switch module to electrify the vehicle;
the control module displays the current state of the switch in the switch module through a display module;
if the current starting mode is hot starting, the control module acquires the output state of the switch in the storage unit of the control module during starting, and switches the state of each switch in the switch module according to the output state of the switch;
when resetting the control module, a voltage holding circuit in the control module holds power supply output;
the control module displays the current state of the switch in the switch module through a display module;
the diagnosis module collects output signals of all switches in the switch module and inputs the output signals into the control module for monitoring.
Another aspect provides a vehicle including a power distribution apparatus as described above.
The invention provides a power distribution device, a power distribution method and a vehicle. The switch module is electrically connected with the energy storage module, the switch module is electrically connected with the control module, the control module comprises a digital processing unit and a voltage holding circuit, the voltage holding circuit is used for keeping power output when the digital processing unit is reset, the diagnosis module is connected with the switch module and electrically connected with the control module 120, and the diagnosis module is used for diagnosing faults in the switch module and the control module. The remote control module is connected with the control module and is used for remotely controlling the control module. The device can carry out voltage output maintenance, power supply distribution and voltage monitoring through the control module, can detect the output state in real time, and can realize the stability of circuit output through a voltage output maintenance circuit and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a power distribution apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a switch module of a power distribution apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an analog-to-digital conversion unit of a control module in a power distribution apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cold-hot start determining unit and a storage unit of a control module in a power distribution apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an energy storage module in a power distribution method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a module when dual power sources are input in the power distribution apparatus according to the embodiment of the present invention;
fig. 7 is a flowchart of a power distribution method according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating output status monitoring performed in a power distribution method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Referring to fig. 1, a power distribution apparatus according to an embodiment of the present invention is shown, the apparatus including: a switch module 110, a control module 120, an energy storage module 130, a remote control module 140, and a diagnostic module 150;
the switch module 110 is electrically connected to the energy storage module 130, and the energy storage module 130 is used for maintaining an output voltage when an instantaneous power failure occurs;
the switch module 110 is electrically connected with the control module 120, and the control module 120 is used for controlling the on-off of a switch in the switch module 110 and distributing power;
the control module 120 comprises a digital processing unit 1201 and a voltage holding circuit 1202, wherein the digital processing unit 1201 is electrically connected with the voltage holding circuit 1202, the voltage holding circuit 1202 is electrically connected with the switch module 110, and the voltage holding circuit 1202 is used for holding power supply output when the digital processing unit 1201 is reset;
the diagnosis module 150 is electrically connected to the switch module 110 and the control module 120, and the diagnosis module 150 is used for diagnosing faults in the switch module and the control module;
the remote control module 140 is connected to the control module 120, and the remote control module 140 is used for remotely controlling the control module 120.
Specifically, the device may further include a display module, which may be composed of operation buttons, indicator lamps, a display and the like, controlled by the control module, and displays a control state of the switch module or a diagnosis state of the diagnosis module.
The switch module comprises a switch component and a converter, and the switch module is used for executing the function of power supply output control through the switch component and executing the function of direct-current power supply voltage conversion through the converter.
The on-off of the switch assembly can execute the function of power drive whether the output power supply is output to the external electric equipment, if the switch assembly is switched on, the power drive of the output power supply output to the external electric equipment is output, and if the switch assembly is switched off, the power drive of the output power supply output to the external electric equipment is not output. The converter is used for converting 12V automobile power input by the power module into different voltages required by different devices, for example, 5V power is supplied for a display, 24V power is supplied for an industrial exchanger, and the like.
The control module mainly comprises units such as a singlechip and the like with digital processing capability, a memory with a storage function, a latch and the like, and completes input and output control, circuit diagnosis, interactive unit communication control, remote control unit communication control and the like of the whole power distribution device. The single chip microcomputer can receive information of the display module and the remote control module, control output of the switch module, and diagnose whether the switch module is normal or not through conversion of the diagnosis module; and the abnormal state is indicated through the display module and the remote control module.
The diagnosis module is matched with components in the control module to diagnose the voltage and current output from the switch module, so as to complete the diagnosis of the power distributor system, including the diagnosis of the input voltage and current; output state, output voltage, output current diagnostics.
The remote control module CAN be an intelligent handheld device with a human-computer interaction interface, and is used for realizing remote control of the device in a cab and communicating with an intelligent control unit by using a Controller Area Network (CAN) and the like.
The energy storage module mainly comprises a super capacitor, a storage battery and the like, has the functions of storing and releasing electric energy, can maintain the output power supply normal in a short time when the input power supply falls off, and prevents the rear-end equipment from generating instantaneous power supply interruption.
Further, the voltage holding circuit includes a digital circuit including a latch or a flip-flop or a capacitor circuit.
Specifically, a latch is a storage unit triggered by a level, sensitive to a pulse level, changing state under the level of a clock pulse, and storing data, wherein the action of storing data depends on the level value of an input clock signal or an enabling signal, and only when the latch is in an enabling state, the output is changed along with the input of data. The flip-flop is also called a bistable gate, also called a bistable flip-flop. Is a digital logic circuit that can operate in two states. Flip-flops retain their state until they receive an input pulse, also known as a trigger. When an input pulse is received, the flip-flop output changes state according to the rules and then remains in that state until another trigger is received. The digital circuit formed by the latch or the trigger can store the output state, so that the voltage holding circuit can keep the current output state, and the output state can not be changed in the reset process of the singlechip.
The capacitor circuit is used for storing electric charge when voltage is applied between the two electrode plates of the capacitor through the energy storage function of the capacitor, and releasing the electric charge when the voltage of the two electrode plates changes, so that the electric energy can be stored and released, and the output state cannot be changed in the reset process of the single chip microcomputer.
Further, referring to fig. 2, the switch module 110 includes a plurality of control switches and at least one voltage converter;
the voltage converter is used for converting the input voltage into the voltage required by the vehicle equipment needing to convert the voltage;
the voltage converter is connected in series with a control switch of the vehicle device to be converted in voltage, and the voltage converter is connected in parallel with the control switch.
Specifically, the control switch may be a power switch assembly such as a relay or a smart switch. When the control switch is switched on, the voltage of the power supply module can be input into the corresponding equipment. The voltage converter is a dc voltage converter, for example, the input voltage is 12V, and the corresponding device needs 24V, and the voltage converter can convert the voltage into 24V and output the voltage to the corresponding device. When a plurality of different devices need the converted voltage, for example, there are devices that need a voltage of 24V and devices that need a voltage of 5V, a voltage converter of 12V to 24V and a voltage converter of 12V to 5V are correspondingly provided to perform voltage conversion, and the corresponding voltage is output to the corresponding device.
Further, referring to fig. 3, the control module 120 further includes an analog-to-digital conversion unit 1203;
the analog-to-digital conversion unit 1203 is electrically connected to the diagnostic module 150, and the analog-to-digital conversion unit 1203 is configured to obtain an analog voltage of a switch module converted in the diagnostic module.
Specifically, the diagnosis module collects signals output by the switch module, the output signals comprise voltage signals or current signals, the voltage signals and the current signals are converted into analog signals in the diagnosis module, the analog signals are transmitted to an analog-to-digital conversion unit in the control module, the analog signals are converted into digital signals in the analog-to-digital conversion unit, the control module can determine the output state of the switch module by monitoring the state of the digital signals, once the digital signals change, the control module can acquire error information, faults are reported and processed, and diagnosis of the switch module is completed.
Further, referring to fig. 4, the control module 120 further includes a cold-hot start determining unit 1204 and a storage unit 1205;
the cold-hot start judging unit 1204 is configured to instruct cold start or hot start;
the storage unit 1205 is used for storing the output state of the switch in the switch module before the last power failure;
if the cold start is performed, the switch in the switch module 110 is in an off state during the start;
if the power is hot, the control module 120 obtains the output state of the switch in the storage unit 1205 during the startup, and switches the state of the switch in the switch module 110 according to the output state of the switch.
Specifically, the cold start is the first start after the single chip microcomputer is powered off for a long time, the switch state in the switch module is kept in the disconnected output state at the moment, the hot start is the start when the single chip microcomputer is reset and powered off for a short time which is less than 1s, and the output state of each power supply in the switch module is the state before the power off is kept at the moment.
The cold and hot start judging unit can use a resistance-capacitance circuit, a memory and a register inside or outside the singlechip as hardware devices for cold and hot start judgment and is connected with an input port or an output port of the singlechip. When the single chip microcomputer is powered on, the zone bit is reset, after a long time, the zone bit is set, and the zone bit cannot be cleared when the single chip microcomputer is reset.
After the program of the single chip microcomputer runs, reading a cold and hot start flag bit, and setting the output states of all switches to be disconnected when the cold start flag bit is read; when the cold-hot start flag bit is read, the single chip microcomputer is reset instantly, and the output state is expected to be a holding state, so that the single chip microcomputer does not change the output state, and simultaneously, the states stored in the memories such as the storage unit and the like are read as the output state.
Further, referring to fig. 5, the energy storage module 130 includes a super capacitor, a first diode and a second diode;
the anode of the first diode is electrically connected with the power supply module, and the cathode of the first diode is electrically connected with the switch module;
the anode of the second diode is electrically connected with the power module, the cathode of the second diode is electrically connected with the super capacitor, and the super capacitor is electrically connected with the switch module.
Specifically, the energy storage module comprises a super capacitor and the like, and when the input power supply is powered off instantly due to automobile starting and engine switching, the output voltage can be maintained to be always greater than the set minimum voltage, and the short-time normal work of the later-stage electric appliance is maintained. In the energy storage unit, besides energy storage devices such as a super capacitor, an ideal diode circuit composed of a microelectronic chip and a field effect transistor is also provided. For instantaneous switching between the two power supplies, the power supply module and the supercapacitor. The energy storage module can also have a charging and discharging management function on the power module, and the storage battery is prevented from being damaged due to overcharge or overdischarge of the storage battery.
In a specific embodiment, there are 10 groups of power switches composed of field effect transistors above 10A, and 1 dc conversion power module of 12V to 24V. The output of each power supply is respectively marked as 'power supply output 1' to 'power supply output 10'; in the power output 1 to the power output 10, 10 input/output ports are connected to the control module. When the output of the control module is at a high level, the corresponding switch output is in an on state, and when the output of the control module is at a low level, the corresponding switch output is in an off state.
The diagnosis module converts and collects states of input main power supply, output voltage and output current of 'power supply output 1' to 'power supply output 10', the voltage can use a resistance voltage divider during collection, and the current can use a Hall current sensor and the like. And converting each signal into an analog voltage with a proportional relation of about 0-3V, and outputting the analog voltage to an analog switch, an analog-to-digital conversion module and the like in the control module, wherein 0-3V represents 0A-30A.
In the display module, the input part can comprise 11 buttons which are connected with the singlechip, and each button can respectively control the output states corresponding to 'power output 1' to 'power output 10'. The display module can also comprise 1 common button for controlling the on or off of the power output 1 to the power output 10 according to the set logic. The display module at least comprises 11 red indicating lamps and 11 green indicating lamps, wherein the red indicating lamps are respectively used for indicating the main power supply and fault information of 'power output 1' to 'power output 10', and the green indicating lamps are used for indicating the output state. The display module also contains a display of light emitting diodes that can be used to indicate total current, current values, etc.
The energy storage module is composed of a super capacitor and the like, and can maintain the output voltage to be always greater than the set minimum voltage and maintain the short-time normal work of the later-stage electric appliance when the input power supply is powered off instantly due to the starting of the automobile and the switching of the engine. In addition to energy storage devices such as a super capacitor, the energy storage unit also has an ideal diode circuit formed by a microelectronic chip or a field effect transistor. For momentary undisturbed switching between the two power supplies.
In one embodiment, referring to fig. 6, if the dual power input is performed, the apparatus includes a switch module, a control module, a display module, a diode circuit, a remote control module, and a diagnostic module;
the diode circuit is electrically connected with the input end of the dual-power module, and the diode circuit is electrically connected with the switch module;
the switch module is electrically connected with the control module, and the control module is electrically connected with the display module;
the remote control module is electrically connected with the control module;
the diagnostic module is electrically connected with the control module and the switch module.
Specifically, the dual power supply is characterized in that besides a conventional storage battery for supplying power to the equipment on the vehicle, an additional storage battery is used for supplying power to the special automatic driving controller. The dual power supply can solve the problem of instantaneous drop of the power supply while solving the redundancy problem of the automatic driving power supply. Aiming at the vehicle type, an energy storage module of the power supply distributor can be removed, and a power supply parallel circuit with an ideal diode circuit is reserved and added.
The embodiment of the invention provides a power distribution device which comprises a switch module, a control module, an energy storage module, a remote control module and a diagnosis module. The switch module is electrically connected with the energy storage module, the switch module is electrically connected with the control module, the control module comprises a digital processing unit and a voltage holding circuit, the voltage holding circuit is used for keeping power output when the digital processing unit is reset, the diagnosis module is connected with the switch module and electrically connected with the control module 120, and the diagnosis module is used for diagnosing faults in the switch module and the control module. The remote control module is connected with the control module and is used for remotely controlling the control module. The device can carry out voltage output maintenance, power supply distribution and voltage monitoring through the control module, can detect the output state in real time, and can realize the stability of circuit output through a voltage output maintenance circuit and the like.
An embodiment of the present invention further provides a starting method, please refer to fig. 7, where the method includes:
s710, the control module acquires a current starting mode;
s720, if the current starting mode is cold starting, the switch in the switch module is in a disconnected state during starting;
s730, the control module switches the state of each switch in the switch module to electrify the vehicle;
s740, if the current starting mode is hot starting, the control module acquires the output states of the switches in the storage unit of the control module during starting, and switches the states of all the switches in the switch module according to the output states of the switches;
s750, when the control module is reset, a voltage holding circuit in the control module keeps power supply output;
s760, the control module displays the current state of a switch in the switch module through a display module;
and S770, the diagnosis module collects output signals of all switches in the switch module and inputs the output signals into the control module for monitoring.
Further, referring to fig. 8, the acquiring, by the diagnosis module, output signals of the switches in the switch module, and inputting the output signals into the control module for monitoring includes:
s810, the diagnosis module collects output signals on each switch in the switch module, and the output signals comprise voltage signals and current signals;
s820, the diagnosis module converts the voltage signal and the current signal into analog signals;
s830, the diagnosis module transmits the analog signal to an analog-to-digital conversion unit in the control module;
s840, the analog-to-digital conversion unit converts the analog signal into a digital signal;
and S850, monitoring the digital signal by the control module.
The method provided in the above embodiments may be performed by an apparatus provided in any embodiment of the present invention, and reference may be made to a power distribution apparatus provided in any embodiment of the present invention without detailed technical details described in the above embodiments.
In another aspect, a vehicle is provided, where the vehicle includes the power distribution device, and with the development of a vehicle computer, the power distribution device may not exist as a separate component, and is integrated with the vehicle computer, and the energy storage module may be simplified into a capacitor, an inductor, and the like. The control module can be shared with a processor of a traveling computer, and meanwhile, the control module still has an output holding circuit and a cold-hot starting holding unit and is used for keeping the output voltage of the switch module unchanged in a short time during resetting.
The present specification provides method steps as described in the examples or flowcharts, but may include more or fewer steps based on routine or non-inventive labor. The steps and sequences recited in the embodiments are but one manner of performing the steps in a multitude of sequences and do not represent a unique order of performance. In the actual system or interrupted product execution, it may be performed sequentially or in parallel (e.g., in the context of parallel processors or multi-threaded processing) according to the embodiments or methods shown in the figures.
The configurations shown in the present embodiment are only partial configurations related to the present application, and do not constitute a limitation on the devices to which the present application is applied, and a specific device may include more or less components than those shown, or combine some components, or have an arrangement of different components. It should be understood that the methods, apparatuses, and the like disclosed in the embodiments may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a division of one logic function, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or unit modules.
Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A power distribution apparatus, the apparatus comprising: the system comprises a switch module, a control module, an energy storage module, a remote control module and a diagnosis module;
the switch module is electrically connected with the energy storage module, and the energy storage module is used for maintaining output voltage when instantaneous power failure occurs;
the switch module is electrically connected with the control module, and the control module is used for controlling the on-off of a switch in the switch module and distributing power supplies;
the control module comprises a digital processing unit and a voltage holding circuit, the digital processing unit is electrically connected with the voltage holding circuit, the voltage holding circuit is electrically connected with the switch module, and the voltage holding circuit is used for holding power supply output when the digital processing unit is reset;
the diagnosis module is electrically connected with the switch module and the control module and is used for diagnosing faults in the switch module and the control module and monitoring output current in the switch module;
the remote control module is connected with the control module and is used for remotely controlling the control module.
2. The power distribution apparatus of claim 1, wherein the switch module comprises a plurality of control switches and at least one voltage converter;
the voltage converter is used for converting the input voltage into the voltage required by the vehicle equipment needing to convert the voltage;
the voltage converter is connected in series with a control switch of the vehicle device to be converted in voltage, and the voltage converter is connected in parallel with the control switch.
3. The power distribution apparatus of claim 1, wherein the control module further comprises an analog-to-digital conversion unit;
the analog-to-digital conversion unit is electrically connected with the diagnosis module and is used for acquiring the analog voltage of the switch module converted in the diagnosis module.
4. The power distribution apparatus of claim 1, wherein the control module further comprises a cold-hot start determining unit and a storage unit;
the cold and hot start judging unit is used for indicating cold start or hot start;
the storage unit is used for storing the output state of the switch in the switch module before the last power failure;
if the starting is cold starting, the switch in the switch module is in a disconnected state during starting;
if the starting is hot, the control module acquires the output state of the switch in the storage unit during starting, and switches the state of the switch in the switch module according to the output state of the switch.
5. The power distribution device of claim 1, wherein if there are two power inputs, the device comprises a switch module, a control module, a diode circuit, a remote control module and a diagnostic module;
the diode circuit is electrically connected with the input end of the dual-power module, and the diode circuit is electrically connected with the switch module;
the switch module is electrically connected with the control module, and the control module is used for controlling the on-off of a switch in the switch module and distributing power supplies;
the control module comprises a digital processing unit and a voltage holding circuit, the digital processing unit is electrically connected with the voltage holding circuit, the voltage holding circuit is electrically connected with the switch module, and the voltage holding circuit is used for holding power supply output when the digital processing unit is reset;
the remote control module is electrically connected with the control module;
the diagnostic module is electrically connected with the control module and the switch module.
6. The power distribution apparatus of claim 1, wherein the energy storage module comprises a super capacitor, a first diode and a second diode;
the anode of the first diode is electrically connected with the power supply module, and the cathode of the first diode is electrically connected with the switch module;
the anode of the second diode is electrically connected with the power module, the cathode of the second diode is electrically connected with the super capacitor, and the super capacitor is electrically connected with the switch module.
7. The power distribution apparatus of claim 1, wherein the voltage holding circuit comprises a digital circuit or a capacitor circuit, and the digital circuit comprises a latch and a flip-flop.
8. A method of power distribution, the method comprising:
the control module acquires a current starting mode;
if the current starting mode is cold starting, the switch in the switch module is in a disconnected state during starting;
after the starting is finished, the control module switches the states of all switches in the switch module to electrify the vehicle;
if the current starting mode is hot starting, the control module acquires the output state of the switch in the storage unit of the control module during starting, and switches the state of each switch in the switch module according to the output state of the switch;
when resetting the control module, a voltage holding circuit in the control module holds power supply output;
the control module displays the current state of the switch in the switch module through a display module;
the diagnosis module collects output signals of all switches in the switch module and inputs the output signals into the control module for monitoring.
9. The power distribution method of claim 1, wherein the diagnostic module collects output signals from the switches in the switch module and inputs the output signals to the control module for monitoring, the diagnostic module comprising:
the diagnosis module collects output signals on each switch in the switch module, wherein the output signals comprise voltage signals and current signals;
the diagnostic module converts the voltage signal and the current signal into analog signals;
the diagnosis module transmits the analog signal to an analog-to-digital conversion unit in the control module;
the analog-to-digital conversion unit converts the analog signal into a digital signal;
the control module monitors the digital signal.
10. A vehicle characterized in that it comprises a power distribution apparatus as claimed in any one of claims 1 to 7.
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