CN111391662B - Voltage control method, vehicle control unit, power distribution unit and unmanned vehicle - Google Patents

Voltage control method, vehicle control unit, power distribution unit and unmanned vehicle Download PDF

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Publication number
CN111391662B
CN111391662B CN202010318379.6A CN202010318379A CN111391662B CN 111391662 B CN111391662 B CN 111391662B CN 202010318379 A CN202010318379 A CN 202010318379A CN 111391662 B CN111391662 B CN 111391662B
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power
trigger signal
vehicle
standby mode
battery pack
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CN111391662A (en
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王剑
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Neolix Technologies Co Ltd
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Neolix Technologies Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a voltage control method, a vehicle control unit, a power distribution unit and an unmanned vehicle. The method is applied to a vehicle control unit in an unmanned vehicle, and comprises the following steps: receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal; and controlling the voltage state of the vehicle battery pack according to the power-on and power-off standby mode starting instruction and the voltage control trigger signal. Through the technical scheme, the reliability of voltage control of the vehicle battery pack of the unmanned vehicle is improved, the storage battery can be charged by controlling the voltage state, and then reliable guarantee is provided for the function realization of unmanned driving and automatic driving.

Description

Voltage control method, vehicle control unit, power distribution unit and unmanned vehicle
Technical Field
The embodiment of the invention relates to the field of unmanned vehicle control, in particular to a voltage control method, a whole vehicle controller, a power distribution unit and an unmanned vehicle.
Background
With the rapid development of the automatic control technology of the unmanned vehicle, the unmanned vehicle is widely applied. In the application scene of the unmanned vehicle, the storage battery in the unmanned vehicle can provide certain electric quantity in the non-operation period of the unmanned vehicle so as to maintain the basic functions of the unmanned vehicle such as data communication, signal detection and unmanned vehicle control, and therefore the high-voltage electricity of the power battery pack of the unmanned vehicle needs to be released to charge the storage battery so as to keep the storage battery on and normally work. The voltage of group battery is unstable in the actual operation scene, and voltage status is always changing, can't be in down the electric state for a long time, can appear unnecessary high-tension electricity release, still release or not in time charge under the too low condition of electric quantity and cause unreasonable circumstances such as storage battery insufficient voltage, and is lower to vehicle group battery voltage state's control reliability, influences unmanned user function and experiences, also can influence the life of group battery.
Disclosure of Invention
The invention provides a voltage control method, a vehicle control unit, a power distribution unit and an unmanned vehicle, which are used for improving the reliability of voltage control of a vehicle battery pack.
In a first aspect, an embodiment of the present invention provides a voltage control method, which is applied to a vehicle control unit in an unmanned vehicle, and includes:
receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal;
and controlling the voltage state of the vehicle battery pack according to the power-on and power-off standby mode starting instruction and the voltage control trigger signal.
Further, the controlling the voltage state of the vehicle battery pack according to the power-on/power-off standby mode starting instruction and the voltage control trigger signal includes:
responding to the power-up and power-down standby mode starting instruction, and controlling the vehicle battery pack to enter an initial voltage state of a power-up and power-down standby mode;
when the first trigger signal is received, controlling the vehicle battery pack to be switched to a target voltage state;
controlling the vehicle battery pack to switch to the initial voltage state when the second trigger signal is received;
and repeatedly executing the switching operation of the initial voltage state and the target voltage state until the exit condition of the power-on/power-off standby mode is met.
Further, the controlling the voltage state of the vehicle battery pack according to the power-on/power-off standby mode starting instruction and the voltage control trigger signal includes:
responding to the power-up and power-down standby mode starting instruction, and detecting the residual capacity of the vehicle battery pack;
and if the residual capacity is less than or equal to a set threshold value, controlling the vehicle battery pack to keep a power-off state.
Further, the controlling the voltage state of the vehicle battery pack according to the power-on/power-off standby mode starting instruction and the voltage control trigger signal includes:
and if the exit condition of the power-on/off standby mode is met, controlling the vehicle battery pack to exit the power-on/off standby mode under the condition that the voltage state is a set state.
Further, the power-up/down standby mode exit condition includes:
receiving a power-on/power-off standby mode closing instruction forwarded by the power distribution unit; or,
the time length of the vehicle battery pack in the power-on and power-off standby mode reaches a preset time length.
Further, the method also comprises the following steps:
generating a voltage state log of the vehicle battery pack;
and sending the voltage state record log to a remote control terminal through the power distribution unit.
In a second aspect, an embodiment of the present invention provides a voltage control method, applied to a power distribution unit in an unmanned vehicle, including:
receiving a power-on and power-off standby mode starting instruction sent by a remote control terminal;
generating a voltage control trigger signal according to the power-on and power-off standby mode starting instruction, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal;
and sending the power-on and power-off standby mode starting command and the voltage control trigger signal to a vehicle control unit.
In a third aspect, an embodiment of the present invention provides a vehicle control unit, including:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the voltage control method according to the first aspect.
In a fourth aspect, an embodiment of the present invention provides a power distribution unit, including:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, cause the one or more processors to implement the voltage control method of the second aspect
In a fifth aspect, an embodiment of the present invention provides an unmanned vehicle, including: a vehicle battery pack comprising a high voltage electrical switch, a hybrid vehicle controller according to the third aspect and a power distribution unit according to the fourth aspect;
the vehicle control unit is connected with the power distribution unit through a Controller Area Network (CAN) bus;
the vehicle control unit is also connected with a high-voltage switch of the vehicle battery pack;
the vehicle control unit is used for controlling the voltage state of the vehicle battery pack by controlling the high-voltage electric switch.
The embodiment of the invention provides a voltage control method, a whole vehicle controller, a power distribution unit and an unmanned vehicle. The method is applied to a vehicle control unit in an unmanned vehicle, and comprises the following steps: receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal; and controlling the voltage state of the vehicle battery pack according to the power-on and power-off standby mode starting instruction and the voltage control trigger signal. Through the technical scheme, the reliability of voltage control of the vehicle battery pack is improved.
Drawings
Fig. 1 is a flowchart of a voltage control method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an implementation of a voltage control method according to an embodiment of the present invention;
fig. 3 is a flowchart of a voltage control method according to a second embodiment of the present invention;
fig. 4 is a flowchart of a voltage control method according to a third embodiment of the present invention;
fig. 5 is a schematic diagram of a hardware structure of a vehicle control unit according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware structure of a power distribution unit according to a fifth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an unmanned vehicle according to a sixth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a voltage control method according to an embodiment of the present invention. This embodiment can be applicable to through carrying out the circumstances of going up the electric control in order realizing stably charging the storage battery to the vehicle group battery of unmanned car. Specifically, the voltage control method may be implemented by software and/or hardware, and integrated in a Vehicle Control Unit (VCU) of the unmanned Vehicle.
As shown in fig. 1, the method specifically includes the following steps:
s110, receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal.
Specifically, the power-on/off standby mode starting instruction is generated by the remote control terminal and is sent to the unmanned vehicle through the cloud server. The unmanned vehicle is provided with a Power Distribution Unit (PDU), the PDU can be communicated with a cloud server through a network to acquire a Power-on/Power-off standby mode starting instruction, a voltage control trigger signal is generated according to the Power-on/Power-off standby mode starting instruction, the Power-on/Power-off standby mode starting instruction and the generated voltage control trigger signal are sent to a vehicle control Unit of the unmanned vehicle, and the VCU enables a vehicle battery pack to enter a Power-on/Power-off standby mode after receiving the Power-on/Power-off standby mode starting instruction and the voltage control trigger signal, so that the vehicle battery pack is controlled to be powered on or powered off according to the voltage control trigger signal.
In this embodiment, the power-on/power-off standby mode means that the vehicle battery pack of the unmanned vehicle is automatically switched between a power-on state and a power-off state in a non-operation period of the vehicle, so as to intermittently charge the battery, thereby keeping the battery turned on and working normally. In the power-up and power-down standby mode, the VCU can automatically control the voltage state of the vehicle battery pack according to the voltage control trigger signal without manually monitoring or controlling the voltage state.
The voltage control trigger signal is generated by the PDU according to a certain timing time and comprises a first trigger signal and a second trigger signal, the two trigger signals are alternately generated according to the timing time, and the VCU can alternately control the vehicle battery pack to be switched from a power-on state to a power-off state or from the power-off state to the power-on state after receiving the voltage control trigger signal.
And S120, controlling the voltage state of the vehicle battery pack according to the power-on and power-off standby mode starting command and the voltage control trigger signal.
Specifically, the voltage state of the vehicle battery pack comprises a power-on state and a power-off state, wherein the power-on state refers to switching from normal power supply to high-voltage power supply, in a high-voltage power supply mode, the vehicle battery pack can release voltage to a storage battery, the storage battery can be charged in a silent mode, and the storage battery is fully charged by the high-voltage power after being expected to be charged for a certain time; the power-off state refers to the fact that the unmanned vehicle is switched from high-voltage power supply to normal power supply. When the VCU receives the voltage control trigger signal, the VCU controls the vehicle battery pack to complete switching from one voltage state to another voltage state, for example, the VCU first switches the vehicle battery pack to a power-on state according to the first trigger signal; after the storage battery is fully charged (or the power-on state is maintained for a certain time), the PDU can be regenerated into a second trigger signal, the VCU switches the vehicle battery pack into the power-off state according to the second trigger signal, and the storage battery is stopped being charged; after waiting for a period of time, the PDU can be regenerated into the first trigger signal, and the switching between the power-on state and the power-off state is continuously cycled until the condition of exiting the power-on and power-off standby mode is satisfied.
Fig. 2 is a schematic diagram illustrating an implementation of a voltage control method according to an embodiment of the present invention. As shown in fig. 2, a user may issue a power-on/power-off standby mode start instruction through a function option of a remote control terminal (e.g., a user terminal such as a computer, a mobile phone, a tablet, etc.), and the remote control terminal sends the power-on/power-off standby mode start instruction to an unmanned vehicle through a cloud server, thereby implementing remote voltage control. The remote control terminal and the unmanned vehicle are related and bound through a user ID, a vehicle unique identifier and the like, and the cloud server can be used for binding registration of the remote control terminal and the unmanned vehicle and storage of registration information, and can also be used for authentication in a remote voltage control process and uploading and issuing of instructions. The communication cloud service may be provided by an Internet of Things (TOT) platform, i.e., an Internet of Things hardware communication service provider.
The PDU in the unmanned Vehicle may be understood as a power-on/off timer control unit, and after a power-on/off standby mode start command is transmitted through a communication cloud service, the power-on/off standby mode start command is received by the PDU and forwarded to a Vehicle Control Unit (VCU) through a CAN bus, where the CAN bus is used to transmit messages between the PDU and the VCU. The PDU also automatically generates a first trigger signal or a second trigger signal according to timing parameters set by the system when the logic of the timer is reached and sends the first trigger signal or the second trigger signal to the VCU, and the VCU controls a high-voltage switch in the vehicle battery pack based on the voltage control trigger signal to realize the switching of the voltage state.
According to the voltage control method provided by the embodiment of the invention, the voltage state of the vehicle battery pack is controlled by receiving the power-on and power-off standby mode starting instruction and the voltage control triggering instruction, so that the controllability and reliability of the voltage control of the vehicle battery pack are improved, and the remote control of the voltage state is realized.
Example two
Fig. 3 is a flowchart of a voltage control method according to a second embodiment of the present invention, which is optimized based on the second embodiment, and specifically describes a process of controlling a voltage state of a vehicle battery pack by a VCU according to a voltage control trigger signal. It should be noted that technical details that are not described in detail in the present embodiment may be referred to any of the above embodiments.
Specifically, as shown in fig. 2, the method specifically includes the following steps:
s201, receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal.
It should be noted that the at least one first trigger signal and the at least one second trigger signal are alternately generated when a certain timing time is met.
And S202, responding to the power-on and power-off standby mode starting instruction, and detecting the residual capacity of the vehicle battery pack.
S203, is the remaining power less than the set threshold? If yes, executing S204; otherwise, S205 is performed.
And S204, controlling the vehicle battery pack to keep a power-off state.
Specifically, whether the vehicle battery pack is enough to charge the storage battery can be judged by detecting the residual electric quantity of the vehicle battery pack. If the residual electric quantity is lower than a set threshold (the set threshold is 30% for example), which indicates that the electric quantity of the vehicle battery pack is insufficient and the vehicle battery pack cannot be continuously electrified, the vehicle battery pack is controlled to be kept in a power-off state, so that the electric quantity of the vehicle battery pack is prevented from being consumed and the basic power supply of the vehicle is prevented from being influenced; if the residual electric quantity is larger than or equal to the set threshold value, the voltage state can be controlled to be switched between the power-on state and the power-off state, and the intermittent charging of the storage battery is realized.
And S205, controlling the vehicle battery pack to enter an initial voltage state of a power-on standby mode.
Specifically, the initial voltage state may be a power-up state or a power-down state. In this embodiment, the initial voltage state may be set to a power-down state, and in the power-up and power-down standby mode, the vehicle battery pack enters the power-down state first to ensure basic power supply, and then switches the voltage state according to the voltage control trigger signal under the condition that the basic power supply condition is stable, so as to avoid unstable functions of the vehicle battery pack caused by directly entering the power-up state.
S206, receiving a voltage control trigger signal? If so, executing S207, otherwise, keeping the vehicle battery pack in an initial voltage state.
S207, controlling the vehicle battery pack to be switched to a target voltage state when the first trigger signal is received; when the second trigger signal is received, controlling the vehicle battery pack to be switched to an initial voltage state; the switching operation of the initial voltage state and the target voltage state is repeatedly performed.
Specifically, if the initial voltage state is a power-down state, the target voltage state is a power-up state; if the initial voltage state is a power-up state, the target voltage state is a power-down state.
In this embodiment, can set up initial voltage state as the power down state, when getting into power up standby mode, the vehicle battery group defaults and gets into power down state earlier and guarantees basic ordinary power supply, after quiet a period of time (by PDU timing and generate first trigger signal), switch to power up state according to first trigger signal to release high pressure and charge for the storage battery, expect to charge after a period of time (by PDU timing and generate second trigger signal), the storage battery is full by high voltage electricity, then switch to power down state according to the second trigger signal, resume basic ordinary power supply.
S208, the power-on/power-off standby mode exit condition is satisfied? If so, S280 is executed, otherwise, the switching operation between the initial voltage state and the target voltage state is repeatedly executed.
Specifically, if it is detected that the power-on/power-off standby mode exit condition is met, the power-on/power-off standby mode exits, and the voltage state switching is stopped; if the power-up standby mode exit condition is not satisfied, S207 is repeatedly performed.
Optionally, the power-on/power-off standby mode exit condition includes: receiving a power-on/power-off standby mode closing instruction forwarded by a power distribution unit; or the time length of the vehicle battery pack in the power-on and power-off standby mode reaches a preset time length.
Specifically, a user can issue a power-on/power-off standby mode closing instruction through the remote control terminal, the power-on/power-off standby mode closing instruction is sent to the PDU through the cloud server and then forwarded to the VCU through the PDU, and the VCU controls the vehicle battery pack to exit the power-on/power-off standby mode after receiving the power-on/power-off standby mode closing instruction. Or, the remote control terminal may exit the takeover after issuing the power-up and power-down standby mode start instruction, and the VCU automatically exits the power-up and power-down standby mode when the duration of the power-up and power-down standby mode of the vehicle battery pack reaches a preset duration (e.g., 15 hours), without the user having to issue the power-up and power-down standby mode stop instruction again.
Optionally, the exit condition of the power-on/power-off standby mode may further include that the unmanned vehicle is changed into an operating state, or the vehicle battery pack may be controlled to exit the power-on/power-off standby mode under the condition that it is ensured that the battery pack does not need to be recharged within a certain period of time.
And S209, controlling the vehicle battery pack to exit the power-on/power-off standby mode when the voltage state is the set state.
Specifically, in the present embodiment, when it is detected that the power-on/power-off standby mode exit condition is satisfied, the voltage state of the vehicle battery pack is adjusted to the set state, and then the power-on/power-off standby mode exits. For example, if the set state is the power-on state, when it is detected that the exit condition of the power-on/power-off standby mode is satisfied, if the current voltage state of the vehicle battery pack is the power-off state, the vehicle battery pack needs to be switched to the power-on state first and then exits the power-on/power-off standby mode, and if the current voltage state of the vehicle battery pack is the power-on state, the vehicle battery pack can directly exit the power-on/power-off standby mode, so that the vehicle battery pack is ensured to be in the power-on state when exiting the power-on/power-off standby mode, and in this case, no human vehicle supplies power for high voltage, so that sufficient electric quantity is ensured to be provided for the vehicle, and more comprehensive and power-consuming advanced functions can be supported.
And S210, generating a voltage state record log of the vehicle battery pack.
Specifically, a voltage state recording log is generated when the voltage state is switched every time, and the electric operation records of power supply and power off are recorded, so that the query and the tracing are facilitated, and a basis can be provided for fault processing.
And S211, transmitting the voltage state record log to a remote control terminal through a power distribution unit.
Specifically, the voltage state recording log CAN be sent to the remote control terminal through the CAN bus, the PDU and the cloud server, so that a user CAN conveniently check the health state of the vehicle battery pack at any time.
The voltage control method provided by the second embodiment of the invention is optimized on the basis of the first embodiment, unnecessary electric quantity consumption is avoided to influence the basic power supply of the vehicle under the condition that the electric quantity of the vehicle battery pack is low by detecting the residual electric quantity, and the switching of the voltage state can be flexibly controlled under the condition that the electric quantity of the vehicle battery pack is enough to ensure the charging of the storage battery; flexible and reliable voltage control is realized by switching between an on-state and an off-state according to a voltage control trigger signal; the vehicle battery pack is adjusted to be in a set state before exiting the power-on/power-off standby mode, stability of a power supply function is guaranteed, query tracing and remote checking of the vehicle battery pack are facilitated by generating a voltage state record log, and convenience in use of a user is improved.
EXAMPLE III
Fig. 4 is a flowchart of a voltage control method according to a third embodiment of the present invention, which is applicable to a situation where a vehicle control unit triggers voltage control of a vehicle battery pack of an unmanned vehicle through a voltage control trigger signal. Specifically, the voltage control method may be performed by a voltage control device, which may be implemented in software and/or hardware and integrated in the PDU of the unmanned vehicle.
As shown in fig. 4, the method specifically includes the following steps:
and S310, receiving a power-on/power-off standby mode starting instruction sent by the remote control terminal.
Specifically, the power-on and power-off standby mode starting instruction is generated by the remote control terminal and is sent to the PDU of the unmanned vehicle through the cloud server. The PDU can be communicated with the cloud server through a network, an on-off standby mode starting instruction is obtained, a voltage control trigger signal is generated according to the on-off standby mode starting instruction, and then the on-off standby mode starting instruction and the generated voltage control trigger signal are sent to the VCU of the unmanned vehicle, so that the VCU can conduct on-off control on the vehicle battery pack.
And S320, generating a voltage control trigger signal according to the power-on and power-off standby mode starting instruction, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal.
Specifically, the voltage control trigger signal is generated by a PDU according to a certain timing time, and includes a first trigger signal and a second trigger signal, where the two trigger signals are alternately generated according to the timing time, and are used to trigger the VCU to alternately control the vehicle battery pack to switch from the power-on state to the power-off state or from the power-off state to the power-on state.
And S330, sending the power-on and power-off standby mode starting instruction and the voltage control trigger signal to the whole vehicle controller.
Specifically, after the power-on/power-off standby mode starting command is transmitted through the communication cloud service, the PDU receives the command and forwards the command to the VCU through the CAN bus; the PDU also automatically generates a first trigger signal or a second trigger signal according to timing parameters set by a system when the logic of the timer is reached, and sends the first trigger signal or the second trigger signal to the VCU, and finally the VCU controls the switch of the high-voltage electricity of the vehicle based on the voltage control trigger signal to realize the switching of the voltage state.
According to the voltage control method provided by the third embodiment of the invention, the whole vehicle controller is indicated to control the voltage state of the vehicle battery pack by receiving the power-on and power-off standby mode starting instruction and generating the voltage control trigger signal, so that the controllability and reliability of the voltage control of the vehicle battery pack are improved, and the remote control of the voltage state is realized.
Further, the first trigger signal is used for instructing the VCU to control the vehicle battery pack to switch from the initial voltage state to the target voltage state, and the second trigger signal is used for instructing the VCU to control the vehicle battery pack to switch from the target voltage state to the initial voltage state.
Further, the initial voltage state is a power-down state, and the target voltage state is a power-up state.
Further, the method further comprises:
receiving a power-on and power-off standby mode closing instruction sent by a remote control terminal;
and sending a power-on/power-off standby mode closing instruction to the VCU.
Further, the method also comprises the following steps:
and sending the voltage state record log generated by the VCU to a remote control terminal.
The voltage control method applied to the power distribution unit according to the present embodiment is the same as the voltage control method applied to the vehicle control unit according to the above embodiment, and the technical details that are not described in detail in the present embodiment can be referred to any of the above embodiments, and the present embodiment has the same beneficial effects as the voltage control method.
Example four
Fig. 5 is a schematic diagram of a hardware structure of a vehicle control unit according to a fourth embodiment of the present invention. As shown in fig. 5, the vehicle control unit according to the present embodiment includes: a processor 410 and a storage 420. The number of the processors in the vehicle control unit may be one or more, fig. 5 illustrates one processor 410, the processor 410 and the storage device 420 in the vehicle control unit may be connected by a bus or in other manners, and fig. 5 illustrates a connection by a bus.
The one or more programs are executed by the one or more processors 410, so that the one or more processors implement the voltage control method described in any of the above embodiments.
The storage device 420 in the vehicle control unit, as a computer-readable storage medium, may be used to store one or more programs, which may be software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the voltage control method in the embodiment of the present invention (for example, a module that receives the power-up/power-down standby mode activation instruction and the voltage control trigger signal, a module that controls the voltage state, and the like). The processor 410 executes various functional applications and data processing of the vehicle control unit by executing software programs, instructions and modules stored in the storage device 420, that is, implements the voltage control method in the above method embodiment.
The storage device 420 mainly includes a storage program area and a storage data area, wherein the storage program area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the vehicle control unit, etc. (the power-on/power-off standby mode on command and the voltage control trigger signal, etc. as in the above-described embodiments). Further, the storage 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage device 420 may further include memory located remotely from the processor 410, which may be connected to the vehicle control unit via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
And, when one or more programs included in the vehicle control unit are executed by the one or more processors 410, the following operations are performed:
receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal;
and controlling the voltage state of the vehicle battery pack according to the power-on and power-off standby mode starting instruction and the voltage control trigger signal.
The vehicle control unit proposed in this embodiment and the voltage control method proposed in the above embodiments belong to the same inventive concept, and technical details that are not described in detail in this embodiment may be referred to any of the above embodiments, and this embodiment has the same beneficial effects as the voltage control method.
EXAMPLE five
Fig. 6 is a schematic diagram of a hardware structure of a power distribution unit according to a fifth embodiment of the present invention. As shown in fig. 6, the present embodiment provides a power distribution unit, including: a processor 510 and a storage 520. The number of the processors in the power distribution unit may be one or more, and fig. 6 illustrates one processor 510, and the processor 510 and the storage device 520 in the power distribution unit may be connected by a bus or in other manners, and fig. 6 illustrates a connection by a bus.
The one or more programs are executed by the one or more processors 510, causing the one or more processors to implement the voltage control method described in any of the embodiments above.
The storage device 520 in the power distribution unit may be used as a computer-readable storage medium for storing one or more programs, which may be software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the voltage control method in the embodiment of the present invention (for example, a module for receiving a power-up/down standby mode on instruction sent by a remote control terminal, a module for generating a voltage control trigger signal, a module for sending the power-up/down standby mode on instruction and the voltage control trigger signal to a vehicle controller, and the like). The processor 510 executes various functional applications of the power distribution unit and data processing, i.e., implements the voltage control method in the above-described method embodiments, by executing software programs, instructions, and modules stored in the storage device 520.
The storage device 520 mainly includes a storage program area and a storage data area, wherein the storage program area can store an operating system and an application program required by at least one function; the storage data area may store data or the like created according to the use of the power distribution unit (the power-up/power-down standby mode on instruction and the voltage control trigger signal or the like in the above-described embodiments). Further, the storage 520 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, storage 520 may further include memory located remotely from processor 510, which may be connected to a power distribution unit over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
And, when one or more programs included in the above power distribution unit are executed by the one or more processors 510, the following operations are performed:
receiving a power-on and power-off standby mode starting instruction sent by a remote control terminal;
generating a voltage control trigger signal according to the power-on and power-off standby mode starting instruction, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal;
and sending the power-on and power-off standby mode starting instruction and the voltage control trigger signal to a vehicle control unit.
The power distribution unit proposed by the present embodiment belongs to the same inventive concept as the voltage control method proposed by the above embodiments, and technical details that are not described in detail in the present embodiment can be referred to any of the above embodiments, and the present embodiment has the same beneficial effects as performing the voltage control method.
EXAMPLE six
The embodiment of the invention provides an unmanned vehicle. Fig. 7 is a schematic structural view of an unmanned vehicle according to a sixth embodiment of the present invention. As shown in fig. 7, the unmanned vehicle includes: the vehicle comprises a vehicle battery pack 30, a vehicle control unit 20 and a power distribution unit 10, wherein the vehicle battery pack 30 comprises a high-voltage electric switch 31; the vehicle control unit 20 is connected with the power distribution unit 10 through a controller area network CAN bus; the vehicle control unit 20 is also connected with a high-voltage electric switch 31 of a vehicle battery pack; the vehicle control unit 20 is used for controlling the voltage state of the vehicle battery pack 30 by controlling the high-voltage electric switch 31.
Specifically, the power distribution unit 10 may communicate with the remote control terminal through the cloud server, receive an on-command (or a off-command) of the remote control terminal for the power-on/power-off standby mode, generate a voltage control trigger signal according to the on-command of the power-on/power-off standby mode, and send the on-command and the voltage control trigger signal to the vehicle control unit 20.
The vehicle control unit 20 is configured to control a voltage state of the vehicle battery pack 30 according to the power-up and power-down standby mode on command and the voltage control trigger signal. The method specifically comprises the following steps: controlling the vehicle battery pack 30 to enter an initial voltage state of the power-up/down standby mode in response to a power-up/down standby mode activation instruction; controlling the vehicle battery pack 30 to switch to a target voltage state upon receiving the first trigger signal; controlling the vehicle battery pack 30 to switch to the initial voltage state upon receiving the second trigger signal; and repeatedly executing the switching operation of the initial voltage state and the target voltage state until the exit condition of the power-on/power-off standby mode is met.
The vehicle control unit 20 is further configured to detect a remaining capacity of the vehicle battery pack 30 in response to a power-on/power-off standby mode activation instruction; if the remaining capacity is less than or equal to the set threshold, the vehicle battery pack 30 is controlled to maintain the power-off state.
The vehicle controller 20 is further configured to control the vehicle battery pack 30 to exit the power-up/power-down standby mode when the voltage state is the set state if the power-up/power-down standby mode exit condition is satisfied.
The vehicle control unit 20 generates a voltage state recording log of the vehicle battery pack 30, and transmits the voltage state recording log to the remote control terminal through the cloud server through the power distribution unit 20.
The unmanned vehicle provided by the sixth embodiment can be used for realizing the voltage control method provided by any of the above embodiments, and has corresponding functions and beneficial effects. Technical details that are not elaborated in this embodiment may be referred to any of the embodiments described above.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (9)

1. A voltage control method is applied to a vehicle control unit in an unmanned vehicle, and is characterized by comprising the following steps:
receiving a power-on/power-off standby mode starting instruction forwarded by a power distribution unit and a voltage control trigger signal generated by the power distribution unit, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal; the voltage control trigger signals are alternately generated by the power distribution unit according to preset timing time, the first trigger signal and the second trigger signal are power-on signals or power-off signals, and the first trigger signal and the second trigger signal have different functions;
controlling the voltage state of the vehicle battery pack according to the power-on and power-off standby mode starting instruction and the voltage control trigger signal so as to control the power-on and power-off of the vehicle battery pack;
the controlling the voltage state of the vehicle battery pack according to the power-on/off standby mode starting instruction and the voltage control trigger signal comprises:
responding to the power-on and power-off standby mode starting instruction;
when the first trigger signal is received, controlling the vehicle battery pack to be switched to a target voltage state;
when the second trigger signal is received, controlling the vehicle battery pack to be switched to an initial voltage state;
and repeatedly executing the switching operation of the initial voltage state and the target voltage state until the exit condition of the power-on and power-off standby mode is met.
2. The method of claim 1, wherein said controlling a voltage state of a vehicle battery pack according to said power-up and power-down standby mode firing command and said voltage control trigger signal comprises:
responding to the power-up and power-down standby mode starting instruction, and detecting the residual capacity of the vehicle battery pack;
and if the residual electric quantity is less than or equal to a set threshold value, controlling the vehicle battery pack to keep a power-off state.
3. The method of claim 1, wherein said controlling a voltage state of a vehicle battery pack according to said power-up and power-down standby mode firing command and said voltage control trigger signal comprises:
and if the exit condition of the power-on/off standby mode is met, controlling the vehicle battery pack to exit the power-on/off standby mode under the condition that the voltage state is a set state.
4. The method of claim 1 or 3, wherein the power-up standby mode exit condition comprises:
receiving a power-on/power-off standby mode closing instruction forwarded by the power distribution unit; or,
the time length of the vehicle battery pack in the power-on and power-off standby mode reaches a preset time length.
5. The method according to any one of claims 1-4, further comprising:
generating a voltage state log of the vehicle battery pack;
and sending the voltage state record log to a remote control terminal through the power distribution unit.
6. A voltage control method is applied to a power distribution unit in an unmanned vehicle, and is characterized by comprising the following steps:
receiving a power-on and power-off standby mode starting instruction sent by a remote control terminal;
generating a voltage control trigger signal according to the power-on and power-off standby mode starting instruction, wherein the voltage control trigger signal comprises at least one first trigger signal and at least one second trigger signal; the voltage control trigger signal is generated by the power distribution unit alternately according to preset timing time, the first trigger signal and the second trigger signal are power-on signals or power-off signals, and the first trigger signal and the second trigger signal have different functions;
sending the power-on and power-off standby mode starting instruction and the voltage control trigger signal to a vehicle control unit so as to control a vehicle battery pack to be powered on and powered off;
the vehicle control unit responds to the power-on and power-off standby mode starting instruction;
the vehicle control unit controls the vehicle battery pack to be switched to a target voltage state when receiving the first trigger signal;
the vehicle control unit controls the vehicle battery pack to be switched to an initial voltage state when receiving the second trigger signal;
and the vehicle control unit repeatedly executes the switching operation of the initial voltage state and the target voltage state until the exit condition of the power-on/power-off standby mode is met.
7. A vehicle control unit, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the voltage control method of any one of claims 1-5.
8. A power distribution unit, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the voltage control method of claim 6.
9. An unmanned vehicle, comprising: a vehicle battery pack comprising a high voltage electrical switch, a hybrid vehicle controller as claimed in claim 7 and a power distribution unit as claimed in claim 8;
the vehicle control unit is connected with the power distribution unit through a Controller Area Network (CAN) bus;
the vehicle control unit is also connected with a high-voltage switch of the vehicle battery pack;
the vehicle control unit is used for controlling the voltage state of the vehicle battery pack by controlling the high-voltage electric switch.
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