CN115208022A - Power supply system and working machine - Google Patents
Power supply system and working machine Download PDFInfo
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- CN115208022A CN115208022A CN202210910616.7A CN202210910616A CN115208022A CN 115208022 A CN115208022 A CN 115208022A CN 202210910616 A CN202210910616 A CN 202210910616A CN 115208022 A CN115208022 A CN 115208022A
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- power supply
- module
- power
- load
- supply module
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/36—Arrangements using end-cell switching
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a power supply system and an operation machine, wherein the system comprises: the power supply system comprises a control module and at least two power supply modules for supplying power to at least one load; the control module is electrically connected with each power supply module respectively; any one of the power supply modules is electrically connected with any one of the loads; the control module is used for determining the power supply priority of each power supply module and controlling the power supply module to supply power to the load based on the power supply priority. The invention is used for solving a series of problems caused by insufficient electric quantity of the power battery when a pure electric power mode is adopted to provide power for the operation machinery in the prior art, and realizes the block use and block replacement of the power battery.
Description
Technical Field
The invention relates to the technical field of power supply of operation machinery, in particular to a power supply system and operation machinery.
Background
At present, electric energy distribution and management of operation machinery are realized by adopting a hybrid power mode, a fuel power mode and a pure electric power mode. The hybrid power mode and the fuel power mode are that an engine provides power for the pump truck to run, and the engine drives a generator to generate power or an external power supply interface is used for providing power for pumping of the pump truck; the pure electric power mode provides power for pumping through a power battery.
When the pure electric power mode is adopted to provide power for the operation machine, the load of the operation machine is large, so that the electric quantity of the power battery is consumed quickly, the whole battery needs to be replaced, the operation machine continues to operate, or the power battery is charged while the operation machine operates, the operation machine needs to be shut down by adopting the mode of replacing the whole battery, the operation machine is restarted to operate by the machine after the replacement is completed, and the working efficiency is reduced. The power battery is charged while being discharged by adopting a mode of charging the power battery when the operation machine operates, so that the service life of the power battery is shortened, and the battery is easily damaged.
Disclosure of Invention
The embodiment of the invention provides a power supply system and an operating machine, which are used for solving a series of problems caused by insufficient electric quantity of a power battery when a pure electric power mode is adopted to provide power for the operating machine in the prior art, and realizing the block use and block replacement of the power battery.
An embodiment of the present invention provides a power supply system, including: the power supply system comprises a control module and at least two power supply modules for supplying power to at least one load;
the control module is electrically connected with each power supply module respectively; any one of the power supply modules is electrically connected with any one of the loads;
the control module is used for determining the power supply priority of each power supply module and controlling the power supply module to supply power to the load based on the power supply priority.
According to the power supply system provided by the embodiment of the invention, a first power supply mode exists between the load and the power supply module, and the first power supply mode is used for indicating that one load is correspondingly connected with one first target power supply module;
the control module is further configured to obtain a first load required power, and determine the first target power supply module based on the remaining power of each power supply module and the location information of each power supply module, where the first load required power is a required power corresponding to the load;
the control module is further configured to control the first target power supply module to supply power to the load based on the first load demand power.
According to the power supply system provided by the embodiment of the present invention, a second power supply manner exists between the load and the power supply module, the second power supply manner is used to indicate that one load is correspondingly connected to at least one second target power supply module in the remaining power supply modules, and the remaining power supply modules are: removing, from the at least two power supply modules, a power supply module remaining after the first target power supply module;
the control module is further configured to, when it is determined that the remaining power amount of the first target power supply module is smaller than a preset value, determine a second target power supply module based on the remaining power amount of each remaining power supply module and the position information of each remaining power supply module, and control the second target power supply module to supply power to the load.
According to the power supply system provided by the embodiment of the invention, the control module is further configured to determine the supply power of the first target power supply module; when the first load demand power is determined to be larger than the supply power, the first target power supply module and the second target power supply module are controlled to supply power to the load based on the first load demand power.
According to the power supply system provided by the embodiment of the invention, the control module is further configured to obtain a second load required power, where the second load required power is a required power corresponding to a plurality of loads;
the control module is further used for determining the supply power of the first target power supply module; and when the fact that the residual capacity of the first target power supply module is larger than or equal to the preset value and the supply power is larger than the second load required power is determined, controlling the first target power supply module to supply power to the plurality of loads.
According to the power supply system provided by the embodiment of the invention, the control module is further configured to generate a charging instruction when it is determined that the remaining power of the first target power supply module is smaller than the preset value.
According to the power supply system provided by the embodiment of the present invention, the power supply system further includes: at least two switch control modules;
the first end of the switch control module is electrically connected with each power supply module, and the second end of the switch control module is electrically connected with the load;
the control module is further used for determining the power supply mode of the load and the power supply module by controlling the start and stop of the switch control module.
According to the power supply system provided by the embodiment of the present invention, the power supply system further includes: at least one drive module;
the first end of the driving module is electrically connected with the second end of each switch control module respectively, and the second end of the driving module is electrically connected with the corresponding load respectively;
the driving module is used for driving the load.
According to the power supply system provided by the embodiment of the present invention, the power supply system further includes: at least one power conversion module;
the first end of each power conversion module is electrically connected with the second end of each switch control module, and the second ends of the power conversion modules are electrically connected with the corresponding driving modules respectively;
the power conversion module is used for converting the electric energy output by the power supply module into the kinetic energy corresponding to the driving module.
An embodiment of the present invention further provides a working machine, including the power supply system as described in any one of the above.
The embodiment of the invention provides a power supply system and an operation machine, wherein the power supply system comprises: the power supply system comprises a control module and at least two power supply modules for supplying power to at least one load; the control module is electrically connected with each power supply module respectively; any one power supply module is electrically connected with any one load, so that any one or more power supply modules can supply power to any load; the control module is used for determining the power supply priority of each power supply module and controlling the power supply modules to supply power to the load based on the power supply priority, so that the power supply system does not consume the electric quantity of a plurality of power supply modules at the same time, and sequentially consumes the target power supply modules according to the power supply priority, therefore, when the battery module of the operation machine is replaced, the operation machine does not need to be controlled to stop, and only the battery module with insufficient electric quantity is replaced, so that the operation efficiency is improved, the battery module with sufficient electric quantity can still ensure the continuous operation of the operation machine, in addition, the problem that the battery module discharges and charges at the same time is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 4 is a fourth schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 5 is a fifth schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 6 is a schematic flowchart of a power supply method according to an embodiment of the present invention;
fig. 7 is a sixth schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 8 is a seventh schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 9 is an eighth schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 10 is a ninth schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 11 is a tenth of a schematic structural diagram of a power supply system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
A power supply system and a work machine according to an embodiment of the present invention will be described below with reference to fig. 1 to 11.
An embodiment of the present invention provides a power supply system, as shown in fig. 1, including: a control module 101 and at least two power supply modules 103 for supplying power to at least one load 102; the control module 101 is electrically connected with each power supply module 103 respectively; any one power supply module 103 is electrically connected with any one load 102;
and the control module 101 is configured to determine a power supply priority of each power supply module 103, and control the power supply module 103 to supply power to the load 102 based on the power supply priority.
In fig. 1, two loads 102 and two power supply modules 103 are taken as an example for illustration, wherein the two loads 102 include: a first load and a second load; the two power supply modules 103 include: the power supply device comprises a first power supply module and a second power supply module. In fig. 1, a first load is connected to a first power supply module, and a second load is connected to a second power supply module.
It should be understood that the description is only for illustration and not for limiting the scope of protection. The following examples are not intended to limit the scope of protection, and will not be described in detail.
The power supply system can be applied to a working machine such as an excavator, a mixer truck, and a pump truck, and the following description will be given by taking an example in which the power supply system is applied to a pump truck.
Specifically, the control module 101 may be a vehicle control unit of the pump truck; the power supply module 103 is a power battery of the pump truck, and each power battery is physically independent; the load 102 includes: the system comprises a main oil pump of the pump truck, a boom pump of the pump truck, a mixer truck of the pump truck, an auxiliary pump of the pump truck, a chassis of the pump truck and the like.
Specifically, the power supply priority of the power supply modules 103 is determined based on the remaining power amount of each power supply module 103 and the position information of each power supply module 103.
The position information is that corresponding numbers, such as 1, 2, 3, 4, 8230, are configured for each power supply module 103 in advance according to the actual physical position of each power supply module 103 on the pump truck.
Specifically, since any one of the power supply modules 103 can be electrically connected to any one of the loads 102, the power supply mode corresponding to the actual operating condition can be determined based on the actual operating condition of the pump truck, so that energy waste is avoided, and energy loss is reduced.
In a specific embodiment, the loads 102 and the power supply modules 103 have a first power supply mode, where the first power supply mode is used to indicate that one load 102 is correspondingly connected to one first target power supply module. The control module 101 is further configured to obtain a first load required power, and determine a first target power supply module based on the remaining power of each power supply module 103 and the location information of each power supply module 103, where the first load required power is a required power corresponding to one load. The control module 101 is further configured to control the first target power supply module to supply power to the load 102 based on the first load demand power.
Specifically, it is determined that only one load 102 of the pump truck is operating at the present moment, the required power corresponding to the load 102 of the operation is obtained, based on the power supply priority, the first target power supply module is determined, and the first target power supply module is controlled to provide the first load required power for the load 102.
Specifically, the maximum amount of power that each power supply module 103 of the present invention can store may be the same or different.
For example, in the present invention, there are 5 power supply modules 103, each power supply module 103 is full of power, and each power supply module 103 can provide the first load required power for the load 102, and at this time, the power supply module 103 with the first number rank is used as the first target power supply module.
For example, there are 5 power supply modules 103, the remaining power of the power supply module 103 with the first number is the first remaining power value, and the remaining power supply modules 103 are full power. At this time, whether the surplus power can provide the supply power with the same size as the first load required power is judged, if yes, the power supply module 103 with the first number rank is used as a first target power supply module, and if not, the power supply module 103 with the second number rank is used as a first target power supply module.
In a specific embodiment, a second power supply manner exists between the load 102 and the power supply module 103, where the second power supply manner is used to indicate that one load 102 is correspondingly connected to at least one second target power supply module in the remaining power supply modules, and the remaining power supply modules are: from among the at least two power supply modules 103, the power supply module 103 remaining after the first target power supply module is removed. The control module 101 is further configured to, when it is determined that the remaining power of the first target power supply module is smaller than the preset value, determine a second target power supply module based on the remaining power of each remaining power supply module and the location information of each remaining power supply module, and control the second target power supply module to supply power to the load 102.
Specifically, since the remaining power of the first target power supply module is less than the preset value, it indicates that the first target power supply module cannot provide the required power corresponding to the load 102 operating at the current time. At this time, at least one second target power supply module needs to be determined from the remaining power supply modules to supply power to the load 102.
Specifically, the manner of determining the second target power supply module is consistent with the manner of determining the first target power supply module. Of course, the manner of determining the second target power supply module further includes: and determining whether one remaining power supply module can provide the load 102 with the required power corresponding to the remaining power supply module, if so, using the remaining power supply module as a second target power supply module, otherwise, determining whether two remaining power supply modules can provide the load 102 with the required power corresponding to the remaining power supply modules, and so on, so as to obtain a final second target power supply module for supplying power to the load 102.
In a specific embodiment, the control module 101 is further configured to determine a supply power of a first target power supply module; when it is determined that the first load demand power is greater than the supply power, the first target power supply module and the second target power supply module are controlled to supply power to the load 102 based on the first load demand power.
Specifically, when the first target power supply module is used for supplying power to the load 102, it is determined whether the supply power of the first target power supply module is greater than the first load demand power, if so, the first target power supply module is controlled to supply power to the load 102, otherwise, the first target power supply module and the second target power supply module are controlled to supply power to the load 102 together.
In an embodiment, the control module 101 is further configured to obtain a second load required power, where the second load required power is a required power corresponding to the multiple loads 102. A control module 101, further configured to determine a supply power of a first target power supply module; and when the residual capacity of the first target power supply module is determined to be greater than or equal to the preset value and the supplied power is greater than the power required by the second load, controlling the first target power supply module to supply power to the plurality of loads 102.
Specifically, it is determined that the pump truck has a plurality of loads 102 operating at the current moment, and second load demand power corresponding to the plurality of loads 102 is obtained. At this time, whether the remaining power of the first target power supply module is greater than or equal to a preset value or not is judged, and whether the power supply power is greater than the power required by the second load or not is judged, if both conditions are met, the first target power supply module is controlled to supply power to the plurality of loads 102, and if any one or two of the two conditions are not met, the first target power supply module and the second target power supply module are controlled to simultaneously supply power to the plurality of loads 102.
In a specific embodiment, the control module 101 is further configured to generate a charging instruction when it is determined that the remaining capacity of the first target power supply module is smaller than the preset value.
Specifically, when the remaining capacity of the first target power supply module is smaller than the preset value, the generated charging instruction is sent to a display of the pump truck and displayed through the display, so that an operator can charge the first target power supply module. The generated charging instruction can be sent to the voice module of the pump truck, and the voice module is used for broadcasting, so that an operator can charge the first target power supply module. The first target power supply module can be used for charging the first target power supply module, and the first target power supply module can be used for charging the first target power supply module.
The invention can independently charge or replace one or more power batteries when the power batteries are insufficient, and can prolong the service life of the batteries, improve the operation efficiency and improve the user experience compared with the prior art in which only a whole battery can be charged or replaced.
In one embodiment, as shown in fig. 2, the power supply system further includes: at least two switch control modules 201; a first end of the switch control module 201 is electrically connected to each power supply module 103, and a second end of the switch control module 201 is electrically connected to the load 102. The control module 101 is further configured to determine a power supply manner of the load 102 and the power supply module 103 by controlling the on/off of the switch control module 201.
In fig. 2, two switch control modules 201 are illustrated as an example, where the two switch control modules 201 include a first switch control module and a second switch control module. The first switch control module is connected with the first power supply module, and the second switch control module is connected with the second power supply module.
Wherein, the switch control module 201 includes: a switch controller.
Specifically, the control module 101 controls the on/off of the switch control module 201 based on the actual working condition of the pump truck, and determines the power supply mode corresponding to the actual working condition.
In one embodiment, as shown in fig. 3, the power supply system further includes: at least one driver module 301; the first end of the driving module 301 is electrically connected to the second end of each switch control module 201, and the second end of the driving module 301 is electrically connected to the corresponding load 102. And a driving module 301 for driving the load 102.
In fig. 3, two driving modules 301 are illustrated as an example, where the two driving modules 301 include: the device comprises a first driving module and a second driving module.
Wherein the driving module 301 comprises a motor.
Specifically, the power supply module 103 supplies power to the motor, so that the motor drives the load 102 to work.
In one embodiment, as shown in fig. 4, the power supply system further includes: at least one power conversion module 401; the first end of the power conversion module 401 is electrically connected to the second end of each switch control module 201, and the second end of the power conversion module 401 is electrically connected to the corresponding driving module 301. The power conversion module 401 is configured to convert the electric energy output by the power supply module 103 into kinetic energy corresponding to the driving module 301.
In fig. 4, two power conversion modules 401 are illustrated as an example, where the two power conversion modules 401 include: a first power conversion module and a second power conversion module.
Wherein the power conversion module 401 comprises a supply converter.
Specifically, in order to more clearly illustrate the present invention, the concept of the branch is introduced, and the present invention is clearly illustrated by taking six branches as an example.
In the following, the respective branches are described by fig. 5 (fig. 5 may also be a schematic structural diagram of the power supply system according to an embodiment of the present invention):
the power supply module 103 corresponding to the main oil pump branch is represented by a battery module 1, the corresponding switch control module 201 is represented by S11 and S12 respectively, the power conversion module 401 is represented by a power converter 1, the driving module 301 is represented by a motor 1, and the load 102 is represented by a main oil pump;
the power supply module 103 corresponding to the arm support pump branch is represented by a battery module 2, the corresponding switch control module 201 is represented by S21 and S22 respectively, the power conversion module 401 is represented by a power converter 2, the driving module 301 is represented by a motor 2, and the load 102 is represented by an arm support pump;
the power supply module 103 corresponding to the mixing pump branch is represented by a battery module 3, the corresponding switch control module 201 is represented by S31 and S32, respectively, the power conversion module 401 is represented by a power converter 3, the driving module 301 is represented by a motor 3, and the load 102 is represented by a mixing pump;
the power supply module 103 corresponding to the auxiliary pump branch is represented by the battery module 4, the corresponding switch control module 201 is represented by S41 and S42, respectively, the power conversion module 401 is represented by the power converter 4, the driving module 301 is represented by the motor 4, and the load 102 is represented by the auxiliary pump;
the power supply module 103 corresponding to the driving branch is represented by a battery module 5, the corresponding switch control module 201 is represented by S51 and S52, respectively, the power conversion module 401 is represented by a power converter 5, the driving module 301 is represented by a motor 5, and the load 102 is represented by driving power;
the switch control module 201 between the main oil pump branch and the boom pump branch is represented by M1, the switch control module 201 between the boom pump branch and the mixing pump branch is represented by M2, the switch control module 201 between the mixing pump branch and the auxiliary pump branch is represented by M3, and the switch control module 201 between the auxiliary pump branch and the driving branch is represented by M4.
Specifically, the control module 101 of the present invention includes a vehicle controller and a battery management system, where the vehicle controller monitors the vehicle state in real time to determine the load 102 in operation, and the following description takes the example that the loads 102 corresponding to the pumping branches are all in operation.
The vehicle control unit monitors and obtains information of the accelerator opening, the pumping displacement and the angle of the arm support operating lever at the current moment, calculates power required by each corresponding load 102 based on the information to obtain power utilization information required by each load 102, transmits the power utilization information to the battery management system, and controls each power supply module 103 to output corresponding electric energy through the battery management system.
In this process, the flow direction of the electric energy is controlled by controlling the on/off of the switch control module 201, and the electric energy is distributed to each load 102.
Specifically, since there are many switch control modules 201, descriptions may be added to distinguish them, for example, S11, S21, S31, S41, S51 are defined as first switches, S12, S22, S32, S42, S52 are defined as second switches, M1, M2, M3, M4 are defined as switch control modules, and the first switches and the second switches may also be collectively defined as switch control modules.
The power supply system provided by the embodiment of the invention comprises: the power supply system comprises a control module and at least two power supply modules for supplying power to at least one load; the control module is electrically connected with each power supply module respectively; any one power supply module is electrically connected with any one load, so that any one or more power supply modules can supply power to any load; the control module is used for determining the power supply priority of each power supply module and controlling the power supply modules to supply power to the load based on the power supply priority, so that the power supply system does not consume the electric quantity of a plurality of power supply modules at the same time, and sequentially consumes the target power supply modules according to the power supply priority, therefore, when the battery module of the operation machine is replaced, the operation machine does not need to be controlled to stop, and only the battery module with insufficient electric quantity is replaced, so that the operation efficiency is improved, the battery module with sufficient electric quantity can still ensure the continuous operation of the operation machine, in addition, the problem that the battery module discharges and charges at the same time is avoided.
The embodiment of the present invention further provides a power supply method, which is applied to a power supply system, and specifically shown in fig. 6:
The target load is a load currently operating at the present time.
Specifically, it is determined which load among the main oil pump, the boom pump, the mixer pump, the auxiliary pump, and the traveling power is operating at the present time, and the determined load is taken as the target load. The target load may be any one or more of the above loads.
Wherein, when the target load is the main oil pump, the operation parameters include: parameters such as accelerator opening, pumping pressure and pumping displacement; when the target load is a boom pump, the operation parameters include: the angle of the arm support operating rod and other parameters; when the target load is a mixing pump, the operating parameters include: stirring amount, stirring speed and other parameters; when the target load is an auxiliary pump, the operation parameters comprise parameters such as hydraulic pressure and the like; when the target load is driving power, the operation parameters include driving speed, driving road conditions and other parameters.
Specifically, the required power of each load is respectively determined based on parameters such as the opening degree of an accelerator, pumping pressure, pumping displacement and the angle of an arm support operating lever, and the required power is used as power utilization information.
And 603, controlling the power supply module to supply power to the target load based on the power utilization information and the power supply priority of each power supply module.
The first power amount, the second power amount, and the like defined in the following embodiments are remaining power amounts of the corresponding power supply modules, and are therefore distinguished for clarity of description.
In a specific embodiment, when the target load is determined to be the load corresponding to the pumping branch, obtaining a first electric quantity of a power supply module corresponding to the pumping branch; when the first electric quantity is determined to be smaller than a first preset electric quantity, controlling a switch control module between the pumping branch and the driving branch to be started, starting a switch control module corresponding to the pumping branch, and closing the switch control module corresponding to the driving branch so as to control a power supply module corresponding to the pumping branch and a power supply module corresponding to the driving branch to output electric energy corresponding to the power utilization information; and when the first electric quantity is determined to be larger than or equal to the first preset electric quantity, the power supply module of the pumping branch circuit supplies power to the self-acting load.
When the circuit of the power supply module of the pumping branch is insufficient, the power supply module of the driving branch is used for providing electric energy in an auxiliary mode, and the operation duration is prolonged.
Of course, in the above process, the electric quantity of the power supply module of the traveling branch needs to be monitored in real time, so that the electric quantity of the power supply module of the traveling branch is prevented from being completely used up, a part of electric quantity is reserved, and electric energy is provided for the traveling of the pump truck.
In a specific embodiment, when it is determined that the target load includes a load corresponding to a main oil pump branch, a load corresponding to an arm support pump branch, a load corresponding to a mixing pump branch and a load corresponding to an auxiliary pump branch, a second electric quantity of a power supply module corresponding to the main oil pump branch, a third electric quantity of the power supply module corresponding to the arm support pump branch, a fourth electric quantity of the power supply module corresponding to the mixing pump branch and a fifth electric quantity of the power supply module corresponding to the auxiliary pump branch are obtained; when the second electric quantity, the third electric quantity, the fourth electric quantity and the fifth electric quantity are determined to be respectively greater than the second preset electric quantity, the switch control modules corresponding to the main oil pump branch, the arm frame pump branch, the mixing pump branch and the auxiliary pump branch are controlled to be opened, and the switch control modules between any two branches are controlled to be closed, so that the power supply modules corresponding to the branches are controlled to output electric energy corresponding to the power utilization information to loads corresponding to the power supply modules. Referring to fig. 7 in particular, the output path of the electrical energy is shown by a thick line in fig. 7, which does not mean other lines.
Under the condition that the power supply modules of all the branches are sufficient in electric quantity, the power supply modules are distributed as required according to the actual condition of the whole vehicle, and the power supply modules are used for supplying power to respective loads. The utilization efficiency and the operating efficiency of energy are improved, and the waste of energy is avoided.
In a specific embodiment, when it is determined that the power corresponding to the electricity utilization information is smaller than a first preset power, a target power supply module is determined from power supply modules corresponding to the pumping branch; and controlling the closing of the first switches corresponding to the main oil pump branch, the arm support pump branch, the mixing pump branch and the auxiliary pump branch, the opening of the second switch and the opening of the switch control module between any two branches so as to control the target power supply module to output electric energy corresponding to the power utilization information.
For example, when the pump truck is in an idle state at the current moment or only the arm support can be operated, the pump truck is determined to be in a low-power state, that is, the power at the current moment is smaller than a first preset power, and the battery module 1 is taken as a target power supply module, so that the battery module 1 supplies power to each load. Referring to fig. 8, the output path of the electrical energy is shown by a thick line in fig. 8, which does not mean other values.
Of course, when the target power supply module is determined, the electric quantity corresponding to each power supply module in the pumping branch needs to be determined, and the power supply module corresponding to the maximum electric quantity value is determined from each electric quantity and is used as the target power supply module.
And if the electric quantity of the corresponding power supply module does not meet the requirement when the electric quantity value is maximum, namely the electric quantity is smaller than the preset power supply electric quantity value, the power supply module corresponding to the running branch is used for supplying power to each load.
When the pump truck is in a low-power state, one of the power supply modules is selected for supplying power, so that energy can be effectively saved.
In a specific embodiment, when it is determined that the second electric quantity is less than or equal to a second preset electric quantity and the third electric quantity is greater than the second preset electric quantity, the power supply module corresponding to the main oil pump branch and the power supply module corresponding to the boom pump branch are taken as target power supply modules, or the power supply module corresponding to the boom pump branch is taken as a target power supply module; and controlling a switch control module between the main oil pump branch and the arm support pump branch to be opened, a first switch corresponding to the arm support pump branch to be opened, and a second switch corresponding to the arm support pump to be closed so as to control the target power supply module to output electric energy corresponding to the power utilization information.
Specifically, when it is determined that the second electric quantity is less than or equal to the second preset electric quantity and the third electric quantity is greater than the second preset electric quantity, it is determined whether the main oil pump is operating, if so, the power supply module corresponding to the branch of the main oil pump and the power supply module corresponding to the branch of the boom pump are taken as target power supply modules, specifically refer to fig. 9, otherwise, the power supply module corresponding to the branch of the boom pump is taken as a target power supply module, specifically refer to fig. 10. The output path of the electric energy is shown by a thick line in fig. 9 and 10, and does not represent other meanings.
When the power supply module of the target load is insufficient in electric quantity, the other modules are used for assisting in power supply, excessive discharge of a power supply battery of the main oil pump branch is avoided, loss of the battery is reduced, and the service life of the battery is prolonged.
In a specific embodiment, when it is determined that the power corresponding to the power consumption information is greater than the second preset power, the switch control modules corresponding to the main oil pump branch, the boom pump branch, the mixing pump branch and the auxiliary pump branch are controlled to be turned on, and the switch control module between any two branches is controlled to be turned on, so that the power supply module corresponding to each branch outputs the electric energy corresponding to the power consumption information. Referring to fig. 11 in particular, the output path of the electrical energy is shown by a thick line in fig. 11, and does not represent other meanings.
When the whole vehicle runs at full power, the switch control modules among all the branches are all opened, the electric energy of the power supply module with low power demand flows to the load with high power demand, the electric energy can be freely distributed for use, and the operation time is prolonged.
The power demand is small and the power demand can be set according to preset values based on actual conditions.
The embodiment of the invention also provides a working machine which comprises the power supply system described in the embodiment.
Wherein the work machine comprises a pump truck.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A power supply system, comprising: the power supply system comprises a control module and at least two power supply modules for supplying power to at least one load;
the control module is electrically connected with each power supply module respectively; any one of the power supply modules is electrically connected with any one of the loads;
the control module is used for determining the power supply priority of each power supply module and controlling the power supply module to supply power to the load based on the power supply priority.
2. The power supply system according to claim 1, wherein a first power supply mode exists between the load and the power supply module, and the first power supply mode is used for indicating that one load is correspondingly connected with one first target power supply module;
the control module is further configured to obtain a first load required power, and determine the first target power supply module based on the remaining power of each power supply module and the position information of each power supply module, where the first load required power is a required power corresponding to the load;
the control module is further configured to control the first target power supply module to supply power to the load based on the first load demand power.
3. The power supply system according to claim 2, wherein a second power supply manner exists between the load and the power supply module, the second power supply manner is used for indicating that one load is correspondingly connected with at least one second target power supply module in the remaining power supply modules, and the remaining power supply modules are: removing, from the at least two power supply modules, a power supply module remaining after the first target power supply module;
the control module is further configured to determine the second target power supply module based on the remaining power of each remaining power supply module and the location information of each remaining power supply module when it is determined that the remaining power of the first target power supply module is smaller than a preset value, and control the second target power supply module to supply power to the load.
4. The power supply system of claim 3, wherein the control module is further configured to determine a supply power of the first target power supply module; when the first load demand power is determined to be larger than the supply power, the first target power supply module and the second target power supply module are controlled to supply power to the load based on the first load demand power.
5. The power supply system according to claim 3, wherein the control module is further configured to obtain a second load demand power, where the second load demand power is a demand power corresponding to a plurality of the loads;
the control module is further used for determining the supply power of the first target power supply module; and when the fact that the residual capacity of the first target power supply module is larger than or equal to the preset value and the supply power is larger than the second load demand power is determined, controlling the first target power supply module to supply power to the plurality of loads.
6. The power supply system of claim 3, wherein the control module is further configured to generate a charging command when it is determined that the remaining power of the first target power supply module is less than the preset value.
7. The power supply system according to any one of claims 1 to 6, characterized in that the power supply system further comprises: at least two switch control modules;
the first end of the switch control module is electrically connected with each power supply module, and the second end of the switch control module is electrically connected with the load;
the control module is further used for determining the power supply mode of the load and the power supply module by controlling the start and stop of the switch control module.
8. The power supply system of claim 7, further comprising: at least one drive module;
the first end of the driving module is electrically connected with the second end of each switch control module respectively, and the second end of the driving module is electrically connected with the corresponding load respectively;
the driving module is used for driving the load.
9. The power supply system of claim 7, further comprising: at least one power conversion module;
the first end of each power conversion module is electrically connected with the second end of each switch control module, and the second ends of the power conversion modules are electrically connected with the corresponding driving modules respectively;
the power conversion module is used for converting the electric energy output by the power supply module into the kinetic energy corresponding to the driving module.
10. A work machine, characterized by comprising an electric power supply system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910616.7A CN115208022A (en) | 2022-07-29 | 2022-07-29 | Power supply system and working machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910616.7A CN115208022A (en) | 2022-07-29 | 2022-07-29 | Power supply system and working machine |
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| CN115208022A true CN115208022A (en) | 2022-10-18 |
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| CN202210910616.7A Pending CN115208022A (en) | 2022-07-29 | 2022-07-29 | Power supply system and working machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118082613A (en) * | 2024-04-26 | 2024-05-28 | 中国第一汽车股份有限公司 | Vehicle-mounted battery charging and discharging method and device, electronic equipment and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118082613A (en) * | 2024-04-26 | 2024-05-28 | 中国第一汽车股份有限公司 | Vehicle-mounted battery charging and discharging method and device, electronic equipment and storage medium |
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