CN116279394A

CN116279394A - Power distribution method and hybrid engineering machine

Info

Publication number: CN116279394A
Application number: CN202310242255.8A
Authority: CN
Inventors: 王敏; 孙明峰; 裴换鑫; 展丞; 秦玉福
Original assignee: Weichai Power Co Ltd; Weichai New Energy Technology Co Ltd
Current assignee: Weichai Power Co Ltd; Weichai New Energy Technology Co Ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-06-23

Abstract

The invention discloses a power distribution method and a hybrid engineering machine, wherein the power distribution method comprises the following steps: acquiring a vehicle working condition, and controlling the communication of a first power distribution channel, a second power distribution channel, a third power distribution channel and/or a fourth power distribution channel according to the vehicle working condition; when the first power distribution channel and the fourth power distribution channel are communicated, controlling the engine to provide the boarding operation power for boarding, controlling the engine and the vehicle-mounted charger to provide the charging power for the battery and providing the auxiliary operation power for the driving device; when the second power distribution channel is communicated, controlling the engine and the vehicle-mounted charger to provide the boarding operation power, and controlling the vehicle-mounted charger to provide the charging power and the auxiliary operation power; and when the third power distribution channel is communicated, controlling the engine and the vehicle-mounted charger to provide the power for the boarding operation.

Description

Power distribution method and hybrid engineering machine

Technical Field

The embodiment of the invention relates to a control technology, in particular to a power distribution method and a hybrid engineering machine.

Background

Compared with other mixed motor vehicles, the mixed motor engineering machinery is complex in operation condition, once operation cannot be interrupted halfway, otherwise poor comfort of the whole motor vehicle or irreversible damage of a mechanical structure can be caused, so that when operation requirement power is high, battery feeding can be caused, in addition, when a gun is inserted for loading operation, the power of a vehicle-mounted charger only charges a battery generally, the loading operation requirement cannot be met, and energy waste is caused.

Disclosure of Invention

The invention provides a power distribution method and a hybrid engineering machine, which aim to improve the power utilization rate of a vehicle-mounted charger.

In a first aspect, an embodiment of the present invention provides a power allocation method, including:

acquiring a vehicle working condition, and controlling the communication of a first power distribution channel, a second power distribution channel, a third power distribution channel and/or a fourth power distribution channel according to the vehicle working condition;

when the first power distribution channel and the fourth power distribution channel are communicated, controlling the engine to provide the boarding operation power for boarding, controlling the engine and the vehicle-mounted charger to provide the charging power for the battery and providing the auxiliary operation power for the driving device;

when the second power distribution channel is communicated, the engine and the vehicle-mounted charger are controlled to provide the boarding operation power, and the vehicle-mounted charger is controlled to provide the charging power and the auxiliary operation power;

or controlling the vehicle-mounted charger to provide the boarding operation power, the charging power and the auxiliary operation power;

or controlling the vehicle-mounted charger and the battery to provide the get-on operation power and the auxiliary operation power;

Or controlling the engine and the vehicle-mounted charger to provide the boarding operation power and the auxiliary operation power;

or controlling the vehicle-mounted charger to provide the boarding operation power and the auxiliary operation power;

or controlling the engine, the vehicle-mounted charger and the battery to provide the boarding operation power, and controlling the battery to provide the auxiliary operation power;

and when the third power distribution channel is communicated, controlling the engine and the vehicle-mounted charger to provide the power for the boarding operation.

Optionally, if the charge amount of the battery is smaller than the lower discharge limit, the sum of the boarding operation power and the auxiliary operation power is smaller than the engine power;

the first power distribution path and the fourth power distribution path are controlled to communicate.

Optionally, if the charge amount of the battery is smaller than the lower discharge limit, and the sum of the boarding operation power and the auxiliary operation power is larger than the engine power and the vehicle-mounted charging power;

the third power distribution path is controlled to communicate.

Optionally, if the charge amount of the battery is smaller than a lower discharge limit, the sum of the boarding operation power and the auxiliary operation power is smaller than the engine power and the charger power and larger than the engine power;

And controlling the engine and the vehicle-mounted charger to provide the boarding operation power, and controlling the vehicle-mounted charger to provide the charging power and the auxiliary operation power.

Optionally, if the charge amount of the battery is smaller than the upper charging limit and larger than the lower discharging limit, and the sum of the boarding power and the auxiliary power is smaller than the motor power;

and controlling the vehicle-mounted charger to provide the boarding operation power, the charging power and the auxiliary operation power.

and controlling the vehicle-mounted charger and the battery to provide the get-on operation power and the auxiliary operation power.

Optionally, if the charge amount of the battery is greater than the upper charging limit, the sum of the power of the boarding operation and the power of the auxiliary operation is greater than the power of the motor and greater than the sum of the power of the engine and the power of the charger;

and controlling the engine, the vehicle-mounted charger and the battery to provide the boarding operation power, and controlling the battery to provide the auxiliary operation power.

Optionally, if the charge amount of the battery is greater than the upper charging limit, the sum of the power of the boarding operation and the power of the auxiliary operation is smaller than the power of the motor and smaller than the power of the charger;

and controlling the vehicle-mounted charger to provide the boarding operation power and the auxiliary operation power.

Optionally, if the charge amount of the battery is smaller than the upper charging limit and larger than the lower discharging limit, the sum of the power of the boarding operation and the auxiliary power is larger than the power of the motor and larger than the sum of the power of the engine and the power of the charger;

In a second aspect, an embodiment of the present invention further provides a hybrid engineering machine, including a controller, where the controller is configured with an executable program, and the executable program implements the power allocation method described in the embodiment of the present invention when executed.

Compared with the prior art, the invention has the beneficial effects that: the invention provides a power distribution method, wherein a first power distribution passage, a second power distribution passage, a third power distribution passage and a fourth power distribution passage are arranged, and in different vehicle working conditions, the specified power distribution passages are controlled to be communicated; when the charging power of the vehicle-mounted charger is smaller, the electric quantity of the battery is not reduced more and less, and the problem that the economy of the whole vehicle is poor due to the fact that the engine is only used for providing power for the vehicle when the gun is inserted for low-power operation or transition and cannot be controlled to work on the optimal economic curve of the engine is solved.

Drawings

FIG. 1 is a flow chart of a power allocation method in an embodiment;

FIG. 2 is a block diagram of a work machine in an embodiment;

FIG. 3 is a flow chart of another power allocation method in an embodiment;

fig. 4 is a schematic diagram of the electronic device structure in the embodiment.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

Example 1

Fig. 1 is a flowchart of a power allocation method in an embodiment, and referring to fig. 1, the power allocation method includes:

s101, acquiring the working condition of the vehicle.

In the embodiment, the power distribution method is suitable for whole vehicle power distribution control of the hybrid engineering machinery in working, wherein the hybrid engineering machinery power and the energy storage device are at least provided with an engine, a motor and a battery;

in addition, the hybrid engineering machine is further provided with an On Board Charger (OBC) and a (high voltage) driving platform, wherein the On board Charger is at least used for charging a battery, and the driving platform is configured to provide a (high voltage) driving signal for a specified (high voltage) power utilization load.

In this embodiment, the setting hybrid engineering machine at least includes an upper vehicle and a lower vehicle, where the upper vehicle is used to implement a specified operation action (such as digging, pushing, shoveling, hoisting, etc.) of the engineering machine, and the lower vehicle is used to implement movement (such as forward, backward, steering, etc.) of the engineering machine on a road surface.

In this embodiment, the vehicle conditions (data) include at least: whether the vehicle-mounted charger is connected with an external power supply, the charge quantity of a battery and the power required by the whole vehicle, and in addition, the vehicle working conditions can also comprise one or more of vehicle speed, gear and operation modes.

S102, controlling the communication of the first power distribution passage, the communication of the second power distribution passage, the communication of the third power distribution passage and/or the communication of the fourth power distribution passage according to the working condition of the vehicle.

Fig. 2 is a block diagram of a construction machine according to an embodiment, and referring to fig. 2, in this embodiment, the construction machine is configured to include an engine 100, an on-vehicle charger 200, a battery 300, a power distribution module 400, a motor 500, a driving device 600, a transmission 700, an upper vehicle 800, and a lower vehicle 900;

the engine 100 is in transmission connection with a gearbox 700 through a motor 500, and the gearbox 700 is in transmission connection with an upper vehicle 800 and a lower vehicle 900;

the vehicle-mounted charger 200 is electrically connected through a power distribution module 400, the power distribution module 400 is respectively connected with the motor 500, the battery 300 and the driving device 600 in an on-off mode, and the battery 300 is also connected with the driving device in an on-off mode.

In this embodiment, the power distribution module 400 is configured to implement power distribution (according to preset power distribution control logic) of the output of the vehicle-mounted charger 200 to the battery 300, the driving device 600 and/or the motor 500;

or (according to preset power distribution control logic) to achieve power distribution of the motor 500 output to the battery 300 and/or the driving device 600;

or (according to preset power distribution control logic) to effect distribution of power from the battery 300 output to the motor 500.

In this embodiment, if not specifically described, the vehicle-mounted charger 200 is set to default to be connected to the external power supply.

In this embodiment, when the first power distribution channel is set to be separately connected, the vehicle-mounted charger 200 is respectively unidirectional connected to the battery 300 and the driving device 600 through the power distribution module 400;

when the second power distribution channel is set to be communicated independently, the vehicle-mounted charger 200 is respectively connected with the battery 300, the driving device 600 and the motor 500 through the power distribution module 400, wherein the battery 300 can be conducted with the motor 500 in a bidirectional manner through the power distribution module 400;

when the third power distribution channel is set to be communicated independently, the vehicle-mounted charger 200 is communicated with the motor in one direction only through the power distribution module 400;

When the fourth power distribution path is set to be communicated solely, only the battery 300 is set to be conducted bi-directionally with the motor 500 through the power distribution module 400.

In this embodiment, the first power distribution passage, the second power distribution passage, the third power distribution passage, and the fourth power distribution passage are set to communicate as follows, depending on the vehicle conditions.

The first power distribution passage and the fourth power distribution passage are controlled to be communicated simultaneously, and at the moment, the engine 100 is controlled to provide the upper vehicle 800 operation power for the upper vehicle;

engine 100 and in-vehicle charger 200 are controlled to supply charging power to battery 300 and auxiliary operating power to drive device 600.

Illustratively, in the present embodiment, the charging power is set as: the required charge power of the battery 300 at the present charge amount;

the auxiliary operation power is as follows: to meet the operational requirements of the current electrical loads, the demand of the drive device 600 inputs power.

In this embodiment, when the first power distribution path and the fourth power distribution path are simultaneously connected, the vehicle-mounted charger 200 is in unidirectional conduction with the battery 300 and the driving device 600 through the power distribution module 400, and the battery 300 is in bidirectional conduction with the motor 500 through the power distribution module 400.

In the present embodiment, the mechanical energy of (part of) the engine 100 is converted into electric energy by the motor 500, thereby realizing the supply of the charging power to the battery 300 and the auxiliary operation power to the driving device 600 by the engine 100.

And controlling the second power distribution passage to be communicated, wherein when the second power distribution passage is communicated, the second power distribution passage comprises a plurality of power distribution modes according to different vehicle working conditions, and specifically comprises the following steps:

controlling the engine 100 and the vehicle-mounted charger 200 to provide the boarding operation power, and controlling the vehicle-mounted charger 200 to provide the charging power and the auxiliary operation power;

or, the vehicle-mounted charger 200 is controlled to provide the boarding operation power, the charging power and the auxiliary operation power;

or, the vehicle-mounted charger 200 and the battery 300 are controlled to provide the power of the boarding operation and the power of the auxiliary operation;

alternatively, engine 100 and vehicle-mounted charger 200 are controlled to provide the power for the boarding operation and the auxiliary operation;

or, the vehicle-mounted charger 200 is controlled to provide the boarding operation power and the auxiliary operation power;

alternatively, engine 100, in-vehicle charger 200, and battery 300 are controlled to supply the boarding power, and battery 300 is controlled to supply the auxiliary power.

In this embodiment, the power of the boarding operation is set as follows: and the power required by the boarding when the designated operation action is completed.

The third power distribution path is controlled to communicate, and at this time, engine 100 and in-vehicle charger 200 are controlled to supply the power for the boarding operation.

In this embodiment, when the third power distribution path is connected, the battery 300 and the driving device 600 are in an idle state, i.e. the battery 300 is not in a charging or discharging state, and the driving device 600 does not need to output a driving signal.

In this embodiment, the specific manner of setting the first power distribution path, the second power distribution path, the third power distribution path, and/or the fourth power distribution path according to the different vehicle conditions is not limited;

for example, the corresponding relation between different vehicle working conditions and different power distribution channels to be communicated can be determined according to design requirements and calibration tests, a graph or a table is manufactured, and when the engineering machinery works, the power distribution channels to be communicated under the specified vehicle working conditions are determined through the graph or the table.

In this embodiment, when the second power distribution path is connected, a mode of determining the power distribution mode according to the vehicle working condition is not specifically limited;

for example, it is possible to determine an optimal power distribution pattern corresponding to one vehicle condition when the second power distribution path is communicated by bench test with the aim of minimizing power loss of the engine 100 and/or the vehicle-mounted charger 200, and to create a map or table by which a power distribution pattern to be selected under a specified vehicle condition is determined when the construction machine works.

The embodiment provides a power distribution method, in which a first power distribution channel, a second power distribution channel, a third power distribution channel and a fourth power distribution channel are set, in different vehicle working conditions, the specified power distribution channels are controlled to be communicated, when the power distribution channels are communicated, a vehicle-mounted charger is controlled to provide certain power for a get-on vehicle, a battery and/or a driving device according to the vehicle working conditions, so that when the (charging) power of the vehicle-mounted charger is larger, the power supply power of the vehicle-mounted charger for the battery and/or the driving device is not limited by the charging power of the battery, and further, the power of the redundant vehicle-mounted charger can be effectively utilized in the same charging time; when the charging power of the vehicle-mounted charger is smaller, the electric quantity of the battery is not reduced more and less, and the problem that the economy of the whole vehicle is poor due to the fact that the engine is only used for providing power for the vehicle when the gun is inserted for low-power operation or transition and cannot be controlled to work on the optimal economic curve of the engine is solved.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is smaller than the lower discharge limit, the sum of the on-board operation power and the auxiliary operation power is smaller than the engine power;

Illustratively, in the present embodiment, the lower discharge limit of the battery is set as: the minimum battery charge amount that allows the battery to discharge may be determined using parametric data provided by the battery manufacturer, or using values determined empirically or through calibration tests.

In this embodiment, the engine power is specifically set as follows: the output power of the engine corresponding to the target driving force of the entering and exiting vehicles is determined based on the engine optimal economy curve (determined by the calibration test).

In the scheme, the first power distribution channel and the fourth power distribution channel are controlled to be communicated mainly aiming at the scenes that engineering machinery transitions or the power requirements (including the power of boarding operation and auxiliary operation) of the whole vehicle are small;

in this mode, the vehicle-mounted charger is controlled to provide a portion of the charging power required for charging the battery and to provide a portion of the input power required for driving the device 600;

based on the above, the engine can provide the power of the boarding operation required by boarding, and simultaneously, the partial charging power distributed to the battery by the engine is reduced, so that the engine can be controlled to work according to the optimal economic curve of the engine, and the energy consumption of the whole vehicle is reduced.

Based on the scheme shown in fig. 1, in one embodiment, if the charge amount of the battery is smaller than the lower discharge limit, and the sum of the power of the boarding operation and the auxiliary operation is larger than the power of the engine and the vehicle-mounted charging power;

the third power distribution path is controlled to communicate.

In this embodiment, the vehicle-mounted charging power is set as the nominal maximum output power of the vehicle-mounted charger.

In the scheme, the battery is controlled to stop discharging, the driving device is controlled to stop working, meanwhile, the engine is controlled to work according to an optimal economic curve of the engine, partial boarding operation power required by the boarding operation is provided for the boarding, and the vehicle-mounted charger is controlled to provide residual boarding operation power required by the boarding operation;

and if the remaining boarding operation power is greater than the vehicle-mounted charging power, controlling the vehicle-mounted charger to output the vehicle-mounted charging power.

In the scheme, the engine can be controlled to work according to the optimal economic curve of the engine on the premise of meeting the operation requirement of the whole vehicle to the greatest extent through a reasonable power distribution mode, so that the energy consumption of the whole vehicle is reduced.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is smaller than the lower discharge limit, the sum of the power of the boarding operation and the auxiliary operation is smaller than the sum of the power of the engine and the power of the charger and is larger than the power of the engine;

The engine and the vehicle-mounted charger are controlled to provide the boarding power, and the vehicle-mounted charger is controlled to provide the charging power and the auxiliary power.

In the scheme, the engine is controlled to work according to an optimal economic curve of the engine, partial boarding operation power required by the boarding operation is provided for the boarding, and the vehicle-mounted charger is controlled to provide the residual boarding operation power required by the boarding operation;

and controlling the extra power of the vehicle-mounted charger to be distributed to the battery (for providing part or all of charging power for the battery) and the driving device (for providing part or all of input power for the driving device), wherein the extra power is the difference between the power of the charger and the power of the residual boarding operation.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is smaller than the upper charging limit and larger than the lower discharging limit, the sum of the power of the boarding operation and the auxiliary operation is smaller than the power of the motor;

the vehicle-mounted charger is controlled to provide the boarding power, the charging power and the auxiliary power.

Illustratively, in this embodiment, the motor power is set to the nominal maximum output power of the motor.

In this embodiment, the power of the boarding operation is Psc, the power of the auxiliary operation is Pfz, and the power of the charger is Pobc, and in combination with fig. 2:

the configuration of the vehicle-mounted charger 200 drives the motor 500 through the power distribution module 400, so that the motor 500 generates the boarding power Psc required by the boarding 800 during operation, namely, the vehicle-mounted charger 200 is controlled to provide the boarding power Psc;

configuring the vehicle-mounted charger 200 to provide the required auxiliary operation power Pfz for the driving device 600 through the power distribution module 400;

the remaining power (Pobc-Psc-Pfz) configuring the in-vehicle charger 200 is distributed to the battery 300 through the power distribution module 400 for charging of the battery 300.

In this scheme, through reasonable power distribution, when guaranteeing the operation performance of getting on the bus, control engine position get on the bus and provide required operation power of getting on the bus, provide required operation power of getting on the bus and charge for the battery through on-vehicle charger, can reduce the energy consumption of whole car.

Further, in the scheme, if the charge quantity of the battery is smaller than the upper limit of charge and larger than the lower limit of discharge, the sum of the power of the boarding operation and the auxiliary operation is larger than the power of the motor;

The vehicle-mounted charger and the battery are controlled to provide the boarding power and the auxiliary power.

Specifically, in the scheme, if the sum of the power of the boarding operation and the power of the auxiliary operation is Preq, the charging power Pobc of the charger is allocated to the driving device 600 and the boarding 800 according to a preset proportion;

the battery is configured to supply power (Preq-Pob) which is distributed to the driving device 600 and the boarding vehicle 800 in a preset ratio.

In the scheme, the configuration preferably adopts the vehicle-mounted charger to provide required power for the driving device and the boarding, and the configuration battery provides the difference of the required power for the driving device and the boarding when in work, so that the discharging power of the battery can be reduced, the discharging quantity of the battery is reduced, and the operation duration of the boarding can be prolonged after the vehicle-mounted charger is separated from an external power supply.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is greater than the upper charging limit, the sum of the power of the boarding operation and the power of the auxiliary operation is greater than the power of the motor and greater than the sum of the power of the engine and the power of the charger;

the engine, the vehicle-mounted charger and the battery are controlled to provide the boarding operation power, and the battery is controlled to provide the auxiliary operation power.

Illustratively, in the present embodiment, the upper limit of charge is set as: the maximum amount of battery charge that the battery is allowed to charge may be determined using parametric data provided by the battery manufacturer, or using values determined empirically or through calibration tests.

In this scheme, if the battery charger power is Pobc, the engine power is Peng, the boarding operation power is Psc, the auxiliary operation power is Pfu, and the battery output power is Pbat, then:

controlling an engine to work according to an optimal economic curve of the engine, and configuring a Pobc output by a vehicle-mounted charger and a Peng output by the engine to jointly provide required power for getting on, namely providing power (Pobc+Peng) for getting on by the vehicle-mounted charger and the engine;

the battery is configured to supply the remaining power required for the operation of the boarding vehicle, i.e., (Psc-Pobc-Peng), while the battery is configured to supply the auxiliary operating power Pfu to the driving device, or to supply a certain power to the driving device, i.e., (Pbat-psc+pobc+peng).

In the scheme, through reasonable power distribution, the engine can be controlled to work according to the optimal economic curve of the engine on the premise of meeting the operation requirement of the whole vehicle to the greatest extent so as to reduce the energy consumption of the whole vehicle.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is greater than the upper charging limit, the sum of the power of the boarding operation and the power of the auxiliary operation is smaller than the sum of the power of the engine and the power of the charger;

the engine and the vehicle-mounted charger are controlled to provide the boarding operation power and the auxiliary operation power.

For example, in the present solution, if the charger power is Pobc, the boarding power is Psc, and the auxiliary power is Pfu, then:

and the charger power Pobc output by the vehicle-mounted charger is configured to be distributed to the boarding and driving device according to a preset proportion so as to provide partial power required by the operation of the boarding and driving device, and the engine is configured to provide the remaining power required by the operation of the boarding and driving device, namely (Psc+pfu-Pobc).

On the basis of the scheme shown in fig. 1, if the charge amount of the battery is larger than the upper charging limit, the sum of the boarding operation power and the auxiliary operation power is smaller than the motor power and smaller than the charger power;

the vehicle-mounted charger is controlled to provide the boarding power and the auxiliary power.

In this scheme, for example, the configuration on-vehicle charges the machine and provides required operation power of getting on the bus through the distribution module respectively, provides required auxiliary operation power for drive arrangement.

Further, in the scheme, if the charge amount of the battery is larger than the upper charging limit, the sum of the boarding operation power and the auxiliary operation power is smaller than the motor power and larger than the charger power;

the vehicle-mounted charger and the battery are controlled to provide the boarding operation power for boarding, and the battery is controlled to provide the auxiliary operation power for the driving device.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is smaller than the upper charging limit and larger than the lower discharging limit, the sum of the power of the boarding operation and the auxiliary power is larger than the power of the motor and larger than the sum of the power of the engine and the power of the charger;

For example, in this scheme, if the charger power is Pobc, the engine power is Peng, the boarding power is Psc, and the auxiliary power is Pfz, then:

controlling an engine to work according to an optimal economic curve of the engine, configuring a charger power Pobc output by the charger and an engine power Peng output by the engine to provide part of required boarding operation power Psc for boarding, and controlling a battery to provide the rest required boarding operation power, namely (Psc-Pobc-Peng);

The control battery provides the required auxiliary operating power Pfz for the drive device or a portion of the required auxiliary operating power for the drive device.

Based on the scheme shown in fig. 1, in one possible embodiment, if the charge amount of the battery is smaller than the upper charging limit and larger than the lower discharging limit, the sum of the power of the boarding operation and the power of the auxiliary operation is larger than the power of the motor;

In this embodiment, any of the above power allocation methods may be freely arranged and combined, and fig. 3 is a flowchart of another power allocation method in this embodiment, and referring to fig. 3, for example, in one possible implementation, the power allocation method includes:

S201, acquiring the working condition of the vehicle and judging whether the vehicle is on or not.

In this embodiment, the setting the vehicle condition includes: whether the vehicle-mounted charger is connected with an external power supply, the charge quantity of a battery, the power of the boarding operation, the auxiliary operation power, the vehicle speed and the engine torque.

In this case, the method for determining whether to get on the vehicle is not limited, and for example, the get-on operation may be determined by the get-on operation identifier generated by the (controller) when the get-on is placed in the operation mode.

In this scheme, the default vehicle-mounted charger is connected to an external power supply, wherein when the vehicle-mounted charger is connected to the external power supply, the vehicle-mounted charger CAN judge that the vehicle-mounted charger is connected to the external power supply through data information received by a CAN port (in an interface configured by the vehicle-mounted charger).

S202, if the vehicle is not operated, controlling power distribution of the vehicle-mounted charger, the motor and the engine according to a preset power distribution mode according to the working condition of the vehicle.

Referring to fig. 2, in the present solution, setting auxiliary operation power as Pfz and charging power as Pobc, and controlling power distribution of the vehicle-mounted charging machine, the motor and the engine according to a preset power distribution mode specifically includes:

collecting the charge quantity of the battery, and judging whether the charger power of the vehicle-mounted charger is higher than the whole vehicle required power or not if the charge quantity of the battery is smaller than the charging upper limit, namely, whether the charger power is higher than auxiliary operation power or not (at the moment, the auxiliary operation power is mainly related to electric equipment such as DCDC, DCAC, air conditioner and the like);

If the power of the charger is higher than the required power of the whole vehicle, the first power distribution channel is controlled to be communicated, and the vehicle-mounted charger is controlled to provide auxiliary operation power for the driving device;

controlling the vehicle-mounted charger to provide power required by partial or full charging for the battery, wherein the power is the smaller of the residual power (Pobc-Pfz) of the vehicle-mounted charger and the limit value of the charging power of the battery;

if the power of the charger is lower than the required power of the whole vehicle under the working condition of poor battery performance such as low temperature, the first power distribution passage and the fourth power distribution passage are controlled to be communicated, the engine is controlled to provide required auxiliary operation power for the driving device (through the motor and the power distribution module), and the engine and the vehicle-mounted charger are controlled to be the required charging power of the battery system;

specifically, the engine provides auxiliary operation power Pfz for the driving device, and the power provided by the engine for the battery is the difference between the limit value of the battery charging power and the charger power Pobc;

at the moment, the power distributed by the engine to the battery for battery charging is small, double-source quick charging is realized by matching the engine with the vehicle-mounted charger, and meanwhile, the engine can work according to an optimal economic curve of the engine.

S203, if the vehicle is on, the first power distribution passage communication, the second power distribution passage communication, the third power distribution passage communication and/or the fourth power distribution passage communication are controlled according to the working condition of the vehicle.

In this solution, step S203 specifically includes:

if the charge quantity of the battery is smaller than the discharge lower limit, controlling the first power distribution channel and the fourth power distribution channel to be communicated when the sum of the boarding operation power and the auxiliary operation power is smaller than the engine power;

at this time, the engine 100 is controlled to provide the working power of the boarding 800 for the boarding, the engine 100 and the vehicle-mounted charger 200 are controlled to provide the charging power for the battery 300, and the auxiliary working power for the driving device 600 is controlled;

if the charge quantity of the battery is smaller than the lower discharge limit and the sum of the power of the boarding operation and the power of the auxiliary operation is larger than the power of the engine and the vehicle-mounted charging power, the third power distribution channel is controlled to be communicated;

at this time, engine 100 and vehicle-mounted charger 200 are controlled to provide the power for the boarding operation;

if the charge quantity of the battery is smaller than the lower discharge limit, the sum of the power of the boarding operation and the auxiliary operation is smaller than the sum of the power of the engine and the power of the charger and is larger than the power of the engine, the second power distribution passage is controlled to be communicated;

at this time, the engine 100 and the vehicle-mounted charger 200 are controlled to provide the boarding operation power, and the vehicle-mounted charger 200 is controlled to provide the charging power and the auxiliary operation power;

if the charge quantity of the battery is smaller than the upper limit of charge and larger than the lower limit of discharge, and the sum of the power of the boarding operation and the auxiliary operation is smaller than the power of the motor, controlling the second power distribution channel to be communicated;

At this time, the vehicle-mounted charger 200 is controlled to provide the boarding power, the charging power and the auxiliary power;

if the charge quantity of the battery is smaller than the upper limit of charge and larger than the lower limit of discharge, and the sum of the power of the boarding operation and the auxiliary operation is larger than the power of the motor, controlling the second power distribution channel to be communicated;

at this time, the in-vehicle charger 200 and the battery 300 are controlled to provide the boarding power and the auxiliary power;

if the charge quantity of the battery is larger than the upper charging limit, the sum of the power of the boarding operation and the power of the auxiliary operation is larger than the power of the motor and is larger than the sum of the power of the engine and the power of the charger, and the second power distribution passage is controlled to be communicated;

at this time, engine 100, vehicle-mounted charger 200, and battery 300 are controlled to provide the power for the boarding operation, and battery 300 is controlled to provide the power for the assisting operation;

if the charge quantity of the battery is larger than the upper charging limit, controlling the second power distribution channel to be communicated when the sum of the power of the boarding operation and the power of the auxiliary operation is smaller than the sum of the power of the engine and the power of the charger;

at this time, engine 100 and vehicle-mounted charger 200 are controlled to provide the boarding operation power and the auxiliary operation power;

if the charge quantity of the battery is larger than the upper charging limit, the sum of the boarding operation power and the auxiliary operation power is smaller than the motor power and smaller than the charger power, and the second power distribution channel is controlled to be communicated;

At this time, the vehicle-mounted charger 200 is controlled to provide the boarding operation power and the auxiliary operation power;

if the charge quantity of the battery is larger than the upper charging limit, the sum of the boarding operation power and the auxiliary operation power is smaller than the motor power and larger than the charger power, and the second power distribution channel is controlled to be communicated;

at this time, the vehicle-mounted charger 200 and the battery 300 are controlled to provide the boarding operation power for boarding, and the battery 300 is controlled to provide the auxiliary operation power for the driving device;

if the charge quantity of the battery is smaller than the upper limit of charge and larger than the lower limit of discharge, the sum of the power of the boarding operation and the auxiliary power is larger than the power of the motor and larger than the sum of the power of the engine and the power of the charger, the second power distribution channel is controlled to be communicated;

at this time, engine 100, in-vehicle charger 200, and battery 300 are controlled to supply the boarding power, and battery 300 is controlled to supply the auxiliary power.

In this embodiment, when the second power distribution channel is controlled to be connected, the specific implementation process of power distribution is the same as that described in the foregoing corresponding scheme, and will not be described herein.

On the basis of the beneficial effects of the scheme shown in fig. 1, in the scheme, when the vehicle-mounted charging machine is powered on and the power of the vehicle-mounted charging machine is higher than the required power of the whole vehicle, the residual power of the vehicle-mounted charging machine is controlled to charge the battery on the premise of ensuring the performance of the vehicle-mounted charging machine to store electricity for the battery;

When the vehicle is on the road and the power required by the whole vehicle is not high, the vehicle-mounted charger and the battery are controlled to provide power for the operation together, and the power provided by the battery is the power required by the whole vehicle minus the power of the charger, so that the discharging power distributed to the battery by the whole vehicle is reduced, and the power feeding of the battery is prevented;

the power distribution is carried out according to the vehicle-mounted charger, the engine and the battery, so that the performance of the boarding operation is ensured;

when the electric quantity is not lower than the lower limit in the boarding operation, and when the low-power requirements such as transition and the like are met, controlling the engine to charge the battery by the power of the vehicle-mounted charger and the residual power of the engine after meeting the boarding operation, keeping the shallow charge and shallow discharge of the battery, and prolonging the service life of the battery;

when the vehicle is on, the required power of the whole vehicle is medium, the engine is controlled to be in an optimal economic curve, the vehicle-mounted charger supplements the residual required power of the whole vehicle, the residual power of the vehicle-mounted charger charges and stores energy for the battery, and the economy of the whole vehicle is improved;

when the vehicle is not operated and the power of the vehicle-mounted charger is low, the engine and the vehicle-mounted charger are started to supply power to the battery and the auxiliary drive together, so that the power feeding of the battery is prevented, and the service life is prolonged.

Example two

The present embodiment proposes a hybrid engineering machine, including a controller configured with an executable program that implements any one of the power allocation methods described in the first embodiment when executed.

In this embodiment, the implementation process of the power allocation method of the hybrid engineering machine and the configuration thereof are the same as the corresponding content described in the first embodiment, and specific content is not repeated.

Example III

Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.

Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the power allocation method.

In some embodiments, the power allocation method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the power allocation method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the power allocation method in any other suitable way (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.

Note that boarding is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A method of power allocation, comprising:

2. The power distribution method according to claim 1, wherein if the charge amount of the battery is smaller than a discharge lower limit, a sum of the boarding power and the auxiliary power is smaller than an engine power;

3. The power distribution method according to claim 1, wherein if the charge amount of the battery is smaller than a discharge lower limit, and a sum of the boarding power and the auxiliary power is larger than an engine power and an on-vehicle charging power;

the third power distribution path is controlled to communicate.

4. The power distribution method according to claim 1, wherein if the charge amount of the battery is smaller than a discharge lower limit, the sum of the boarding power and the auxiliary power is smaller than the sum of an engine power and a charger power and is larger than the engine power;

5. The power distribution method according to claim 1, wherein if the charge amount of the battery is smaller than the upper charge limit and larger than the lower discharge limit, the sum of the boarding power and the auxiliary power is smaller than the motor power;

6. The power distribution method according to claim 1, wherein if the charge amount of the battery is smaller than the upper charge limit and larger than the lower discharge limit, the sum of the boarding power and the auxiliary power is smaller than the motor power;

7. The power distribution method according to claim 1, wherein if the charge amount of the battery is greater than a charging upper limit, a sum of the boarding power and the auxiliary power is greater than a motor power and is greater than a sum of an engine power and a charger power;

8. The power distribution method according to claim 1, wherein if the charge amount of the battery is greater than a charging upper limit, a sum of the boarding power and the auxiliary power is smaller than a motor power and smaller than a charger power;

9. The power distribution method according to claim 1, wherein if the charge amount of the battery is smaller than the upper charge limit and larger than the lower discharge limit, the sum of the boarding power and the auxiliary power is larger than the motor power and larger than the sum of the engine power and the charger power;

10. A hybrid working machine comprising a controller configured with an executable program that when executed implements the power distribution method of any one of claims 1 to 9.