CN115313591B - Battery control method, system, equipment, device and medium for electric grinding and polishing machine - Google Patents

Battery control method, system, equipment, device and medium for electric grinding and polishing machine Download PDF

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Publication number
CN115313591B
CN115313591B CN202211233118.XA CN202211233118A CN115313591B CN 115313591 B CN115313591 B CN 115313591B CN 202211233118 A CN202211233118 A CN 202211233118A CN 115313591 B CN115313591 B CN 115313591B
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battery
module
control
motor
management module
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CN115313591A (en
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叶根翼
林名强
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Fujian Xingyi Intelligent Equipment Co ltd
Quanzhou Institute of Equipment Manufacturing
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Fujian Xingyi Machinery Co ltd
Quanzhou Institute of Equipment Manufacturing
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • 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
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • 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]
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present application relates to the field of electrical energy storage systems, and more particularly, to a battery control method, system, device, apparatus, and medium for an electric polishing machine. The method comprises the following steps: acquiring an operation instruction: receiving an operation instruction sent by a user; detecting the battery: acquiring operation parameters of the battery module based on the received operation instruction; calculating required parameters: acquiring a target torque required by the rotation of the motor based on the acquired operation instruction; judging the number of battery packs needing to be started in the current battery module according to the target torque and the operation parameters; and starting to execute: sending the number of the battery packs to be started to the battery management module; sending a target torque to the motor control module. Has the effect of reducing unnecessary energy consumption when the polishing and grinding machine is used.

Description

Battery control method, system, equipment, device and medium of electric grinding and polishing machine
Technical Field
The present application relates to the field of electrical energy storage systems, and more particularly, to a battery control method, system, device, apparatus, and medium for an electric polishing machine.
Background
Under the national target background of realizing double carbon, the industrial field starts to steadily transform to green low carbon. Electromotion is regarded as a core path for a construction machine to achieve the goal.
The floor grinding and polishing machine is mainly used for grinding, grinding and polishing and renovating the floor surfaces of concrete, granite, marble and the like, realizes the cleanness, the brightness and the smoothness of the floor surface, improves the durability and the aesthetic degree of the floor, and is widely applied to places such as airports, hotel industries, schools, factories, hospitals and the like.
At present, the main fuel used by the grinding and polishing machine is diesel oil. A significant portion of the polisher is powered by diesel fuel, however, its fuel efficiency is less than 50%, and the remaining energy is used to generate excess heat and exhaust; therefore, a large amount of energy consumption is caused, and as the battery is a reusable energy source, the electric automobile and the electric motorcycle are rapidly developed, and the mobile power supply type grinding and polishing machine is gradually developed.
The inventor finds that the grinding and polishing machine with a mobile power supply generally adopts a plurality of storage batteries to supply power in parallel; when the motor is driven, the plurality of storage batteries supply power one by one, if the rotating speed of the motor is high, the consumption speed of a single storage battery is increased, if the electric quantity of the current storage battery is exhausted, the next storage battery needs to be switched to be continuously used, and the situation of unstable voltage is easily caused in the switching process; if a plurality of storage batteries are adopted for supplying power simultaneously, the situation of one-time exhaustion of the electric quantity of the storage batteries is not easy to occur, but the plurality of storage batteries supply power simultaneously, and the maximum output power of the plurality of storage batteries is necessarily greater than the maximum rated power of the motor, so that unnecessary energy waste is caused.
Disclosure of Invention
In order to help reduce unnecessary energy consumption of the polishing machine in use, the application provides a battery control method, a system, equipment, a device and a medium of an electric polishing machine.
In a first aspect, the application provides a control method of a battery control system based on an electric polishing machine, which adopts the following technical scheme:
the control method of the battery control system based on the electric grinding and polishing machine comprises the following steps:
acquiring an operation instruction: receiving an operation instruction sent by a user;
detecting the battery: acquiring operation parameters of the battery module based on the received operation instruction;
calculating required parameters: acquiring a target torque required by the rotation of the motor based on the acquired operation instruction;
judging the number of battery packs needing to be started in the current battery module based on the target torque and the operation parameters;
and starting to execute: sending the number of the battery packs to be started to the battery management module;
sending a target torque to the motor control module.
By adopting the technical scheme, the battery module is adopted to supply power to the motor, so that the diesel oil consumption of the grinding and polishing machine is reduced, and unnecessary energy consumption of the grinding and polishing machine in use is reduced; when the battery module is in a power supply state, the complete machine controller receives an operation instruction of a user, wherein the operation instruction comprises but is not limited to operation instructions of starting, closing, forward and reverse rotation and the like; the complete machine controller calculates a target torque of the motor for executing an operation command; calculating the number of required battery packs according to the target torque; then, sending a target torque to the motor control module and sending the number of the battery packs to be started to the battery management module; so that the motor starts to execute corresponding actions after the corresponding battery pack supplies power to the motor; thereby reducing the situation that the batteries are used too much at the same time, and further reducing the unnecessary energy consumption of the grinding and polishing machine when in use.
Optionally, the operation parameters include remaining electric quantities of the plurality of battery packs; the control method further comprises the following steps:
residual electricity monitoring: acquiring the residual electric quantity of each battery pack according to the operation parameters;
judging whether the battery pack needs to be charged according to a preset sequence;
if yes, sending a battery maintenance request to the battery management module; the maintenance battery request comprises information of a current battery module; the battery management module starts a corresponding second control switch according to the battery maintenance request;
if not, the next battery pack is repeatedly judged until the monitoring of the plurality of battery packs is completed.
By adopting the technical scheme, the plurality of battery packs are respectively monitored for the surplus electricity, if the surplus electricity of any battery pack exceeds the surplus electricity threshold, the current battery pack is charged, the current battery pack is no longer used for supplying power for the motor, and the charging action is started through the second control switch; to perform an action to maintain the battery request; therefore, the suspension of the grinding and polishing machine caused by the exhaustion of electric quantity is reduced, and the working efficiency of the grinding and polishing machine is improved.
Optionally, the control method further includes the following steps:
and (3) battery operation detection: acquiring operating parameters of the battery pack in power supply; the operating parameter comprises an operating temperature of the battery pack;
judging whether the current operating temperature reaches a temperature threshold value;
if yes, switching the rest battery packs which are not operated.
By adopting the technical scheme, the operation states of the plurality of battery packs in the power supply state are monitored, if the operation parameter of one battery pack is abnormal, the battery packs with normal operation parameters and in the non-operation state are switched to continuously supply power to the motor, so that the long-term high-load working state of the battery packs is reduced, and the service life of the battery packs is prolonged.
Optionally, the operating parameters include states of charge of the plurality of battery packs; the step of detecting the battery further comprises the following substeps:
and (3) balance control: respectively acquiring the SOC of a plurality of discharging battery packs;
SOC is defined as the ratio of the remaining capacity of the battery to its nominal capacity:
Figure 176129DEST_PATH_IMAGE001
SOC t is the battery state of charge at time t;
C t the residual capacity of the battery at the moment t;
SOC 0 is the initial value of the charge state of the battery;
i is the current through the cell;
η is the coulombic efficiency of the battery;
correcting the received SOC based on a preset algorithm, and outputting the corrected SOC;
presetting imbalance threshold value Z of battery pack 1 ；
Calculating the unbalance degree Z of the battery pack V ；
Judgment of Z V Whether or not it is greater than Z 1 ；
If yes, starting the cell balancing.
Through adopting above-mentioned technical scheme, can also guarantee that each group battery can both be full of when charging when preventing that single group battery from overcharging to further improve the power supply efficiency of group battery.
In a second aspect, the application provides a battery control system based on an electric grinding and polishing machine, which adopts the following technical scheme:
the battery control system based on the electric grinding and polishing machine comprises a complete machine controller, a motor control module and a battery management module;
the motor control module is connected with a motor for driving the grinding disc; the motor control module is used for controlling the real-time torque of the motor;
the battery management module is connected with a battery module for supplying power to the motor; the battery module comprises a plurality of battery packs; the battery management module is used for monitoring the operating parameters of the battery module and sending the operating parameters to the whole machine controller;
the complete machine controller is respectively connected with the motor control module and the battery management module; the complete machine controller is used for executing the control method.
By adopting the technical scheme, the battery module comprises a plurality of battery packs, when the battery module is in a power supply state, the complete machine controller receives an operation instruction of a user, and the complete machine controller calculates a target torque according to the operation instruction; calculating the number of required battery packs according to the target torque; then, sending a target torque to the motor control module and sending the number of the battery packs to be started to the battery management module; so that the motor starts to execute corresponding actions after the corresponding battery pack supplies power to the motor; thereby reducing the situation that the batteries are used too much at the same time, and further reducing the unnecessary energy consumption of the grinding and polishing machine when in use.
Optionally, the motor control module includes a frequency converter; the frequency converter is connected between the complete machine controller and the motor; and the power input end of the frequency converter is connected with the battery module.
Through adopting above-mentioned technical scheme, adopt the converter that has frequency conversion technique, combine the microelectronics technique can be supplied with the alternating current conversion that battery module supplied with for the direct current, if the cooperation adopts direct current motor can obtain bigger torque to this practical value that realizes the machine of throwing that grinds improves.
Optionally, a plurality of power input loops are arranged between the power input end of the frequency converter and the power output ends of the plurality of battery packs; a first control switch is connected in series in the power input loop; the control end of the first control switch is in communication connection with the battery management module, and the first control switch is used for controlling the on-off of the power supply input loop.
By adopting the technical scheme, the battery packs are respectively controlled to be switched on and switched off, so that the battery management module can control the supply quantity of the battery packs, and the accuracy control of the electric quantity supplied by the battery module is improved.
Optionally, the battery module further includes a charging submodule and a second control switch, and a charging input circuit is connected between the charging submodule and the plurality of battery packs; the first output end of the second control switch is connected in series in the charging input loop and is normally open; the second output end of the second control switch is connected in series in the power output loop and is in normally closed arrangement; and the control end of the second control switch is in communication connection with the battery management module.
By adopting the technical scheme, the charging submodule is connected with the charging input loop, the second control switch is electrified, and the first output end of the second control switch is closed, so that the connection between the corresponding battery pack and an external power supply is realized, and the charging action of the battery pack is realized; meanwhile, the second output end of the second control switch is disconnected; thereby not affecting the normal power supply action of the battery pack; and the battery pack is prevented from being charged and discharged at the same time, thereby prolonging the service life of the battery.
In a third aspect, the application provides a polishing machine device, which adopts the following technical scheme:
a grinding and polishing machine device comprises a machine body, an operation panel and a control system, wherein the operation panel is arranged on the machine body; and the control operation panel is in communication connection with the control system.
In a fourth aspect, the computer apparatus provided in the present application adopts the following technical solutions:
computer device comprising a processor, a memory and a computer program stored in said memory and executable on said processor, said processor implementing the above-mentioned control method when executing said computer program.
By adopting the technical scheme, the computer device capable of executing the control method is provided.
In a fifth aspect, the computer-readable storage medium provided by the present application adopts the following technical solutions:
a computer-readable storage medium storing a computer program; which computer program, when being executed by a processor, carries out the above-mentioned control method.
By adopting the technical scheme, a carrier of a computer program of the control method is provided.
In summary, the present application includes at least the following advantageous technical effects:
1. the whole machine controller receives an operation instruction of a user, and the whole machine controller calculates a target torque according to the operation instruction; calculating the number of required battery packs according to the target torque; then, sending a target torque to the motor control module and sending the number of the battery packs to be started to the battery management module; so that the motor starts to execute corresponding actions after the corresponding battery pack supplies power to the motor; thereby reducing the occurrence of the situation that the batteries are used too much at the same time, and further reducing the unnecessary energy consumption of the grinding and polishing machine during use;
2. respectively monitoring the residual electricity of the plurality of battery packs, if the residual electricity of any battery pack exceeds a residual electricity threshold value, charging the current battery pack, not using the current battery pack to supply power for the motor, and starting a charging action through a second control switch; to perform an action to maintain the battery request; therefore, the suspension of the grinding and polishing machine caused by the exhaustion of electric quantity is reduced, and the working efficiency of the grinding and polishing machine is improved.
Drawings
FIG. 1 is a control schematic block diagram of a battery control system of a polishing machine in an embodiment of the present application;
FIG. 2 is a schematic diagram of a control circuit of a battery management module in an embodiment of the present application;
FIG. 3 is a schematic diagram of a control circuit of a battery management module in an embodiment of the present application;
fig. 4 is a flow frame of a battery control method of the polishing machine in the embodiment of the present application.
Description of reference numerals:
1. a complete machine controller; 2. a motor control module; 3. a battery management module; 31. a battery module; 311. a battery pack; 312. a charging submodule; 313. a second control switch; 314. a first control switch; 32. a battery controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to fig. 1-4 and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The embodiment of the application discloses a battery control system based on an electric grinding and polishing machine.
Referring to fig. 1 and 2, the battery control system based on the electric polishing machine comprises a complete machine controller 1, a motor control module 2 and a battery management module 3; the whole machine controller 1 is respectively connected with the motor control module 2 and the battery management module 3; wherein:
the motor control module 2 is connected with a motor for driving a grinding disc (a component used for grinding the ground on the polishing machine); the motor control module 2 is used for controlling the real-time torque of the motor; in the present embodiment, the motor control module 2 includes a frequency converter; the frequency converter is connected between the complete machine controller 1 and the motor; the power input of the frequency converter is connected to the battery module 31.
In conclusion, in this embodiment, a frequency converter with a frequency conversion technology may be adopted, and a microelectronic technology may be combined to convert the ac power supplied by the battery module 31 into dc power for supply, so that a larger torque may be obtained by using a dc motor in cooperation, thereby improving the practical value of the polishing machine.
As a preferred embodiment, the battery management module 3 is connected with a battery module 31 and a battery controller 32 for supplying power to the motor;
the battery controller 32 is connected with the complete machine controller 1, wherein the battery controller 32 is used for receiving and executing a corresponding instruction sent by the complete machine controller 1;
referring to fig. 2 and 3, the battery module 31 includes a plurality of battery packs 311 connected in parallel, a charging submodule 312, and a second control switch 313; the battery management module 3 is used for monitoring the operation parameters of the battery module 31 and sending the operation parameters to the whole controller 1;
a plurality of power input loops are arranged between the power input end of the frequency converter and the power output ends of the battery packs 311; a first control switch 314 is connected in series in the power input loop; the control end of the first control switch 314 is in communication connection with the battery management module 3, and the first control switch 314 is used for controlling the on/off of the power input loop.
The charging submodule 312, the first control switches 314, and the second control switches 313 are connected to the battery controller 32.
A charging input circuit is connected between the charging submodule 312 and the plurality of battery packs 311; a first output end of the second control switch 313 is connected in series in the charging input loop and is normally open; a second output end of the second control switch 313 is connected in series in the power output loop and is arranged in a normally closed manner; the control end of the second control switch 313 is in communication connection with the battery management module 3, both the first control switch 314 and the second control switch 313 can adopt electronic components with on-off function such as relays, and the first control switch 314 and the second control switch 313 are arranged at positions convenient for operators to operate, such as an operation panel.
In summary, in the present embodiment, the charging submodule 312 is connected to the charging input circuit, and then the second control switch 313 is powered on, and the first output terminal of the second control switch 313 is closed, so as to implement connection between the corresponding battery pack 311 and the external power source, thereby implementing a charging operation on the battery pack 311; while the second output of the second control switch 313 is off; so as not to affect the normal power supply operation of the battery pack 311; it is also avoided that the battery pack 311 is charged and discharged at the same time, thereby extending the life span of the battery.
Further, the charging sub-module 312 includes a wireless power supply slave station and a wireless power supply master station, wherein a wireless energy transmission mode is adopted between the wireless power supply slave station and the wireless power supply master station; the specific installation mode comprises: connecting the wireless power slave station with power input terminals of a plurality of battery packs 311; the wireless power supply master station is installed at a mains supply, and when the battery module 31 needs to be charged, a preset distance is kept between the wireless power supply slave station and the wireless power supply master station so as to maintain a charging state.
Based on the same design concept, the embodiment also discloses a control method of the battery control system based on the electric grinding and polishing machine.
Referring to fig. 1-4, the control method of the battery control system based on the electric polishing machine comprises the following steps:
s100: and acquiring an operation instruction.
Specifically, step S100 includes the following sub-steps:
s110: and receiving an operation instruction sent by a user.
Specifically, a control panel is arranged on the grinding and polishing machine, and an operation key with a corresponding function is arranged on the control panel; the operation instructions comprise starting up, shutting down, forward rotation of the grinding disc, reverse rotation of the grinding disc, acceleration of the grinding disc, deceleration of the grinding disc and the like; the corresponding operation keys of the operation instruction are all connected to the complete machine controller 1, and when the corresponding operation keys are triggered, the control panel feeds back to the complete machine controller 1.
S200: and detecting the battery.
Specifically, step S200 includes the following sub-steps:
s210: acquiring an operating parameter of the battery module 31 based on the received operation instruction;
specifically, the operation parameters of the battery module 31 include parameters such as the remaining capacity of the plurality of battery packs 311 and the operation temperature of the battery packs 311; an electric quantity sensor may be installed on the battery pack 311 to detect the remaining electric quantity of the corresponding battery pack 311, and a digital thermometer may be installed on the housing of the battery pack 311 to detect the real-time temperature of the corresponding battery pack 311, and determine whether the current feedback real-time temperature is the temperature when the battery module 31 operates, in combination with the current power supply state of the battery pack 311.
The sensors can be connected to the battery controller 32 and feed back corresponding operating parameters to the battery controller 32 in real time; the battery controller 32 forwards the received operation parameters to the overall controller 1.
S300: the required parameters are calculated.
Specifically, step S300 includes the following sub-steps:
s310: acquiring a target torque required by the rotation of the motor based on the acquired operation instruction;
s320: judging the number of battery packs 311 to be started in the current battery module 31 based on the target torque and the operation parameters;
for example, if the received operation instruction is the forward rotation of the grinding disc, and the complete machine controller 1 calculates the required number of the battery packs 311 as "three battery packs 311" according to the current operation instruction; the overall controller 1 transmits the required number of battery packs 311 (three battery packs 311) to the battery management module 3.
S400: execution is started.
Specifically, step S400 includes the following sub-steps:
s410: sending the number of battery packs 311 to be started to the battery management module 3;
s420: sending a target torque to the motor control module 2.
Step S400, step S500 and step S600 are all executed simultaneously.
S500: and (3) battery operation detection:
s510: judging whether the current operating temperature reaches a temperature threshold value;
if yes, switching the rest battery packs 311 which are not operated;
specifically, for a plurality of battery packs 311 in a power supply state, the operation state is monitored, and if the operation parameter of one battery pack 311 is abnormal, the battery packs 311 with the normal operation parameters and in a non-operation state are switched to continuously supply power to the motor, so that the long-term high-load operation state of the battery packs 311 is reduced, and the service life of the battery packs 311 is prolonged.
For example, when initially powered, there are six battery packs 311 in a full state; the corresponding serial numbers of the six battery packs 311 are "1, 2 …", and the corresponding serial numbers of the six first control switches 314 are "1, 2 …";
if the received operation instruction is the forward rotation of the grinding disc, and the complete machine controller 1 calculates the number of the required battery packs 311 to be 'three battery packs 311' according to the current operation instruction; the whole machine controller 1 sends the required number of battery packs 311 (three battery packs 311) to the battery management module 3; the battery controller 32 controls the three first control switches 314 to be closed according to the received required number of the battery packs 311;
if not, step S520 is repeated.
S520: judging whether the current operating temperature reaches a temperature threshold value;
if so, the remaining non-operating battery packs 311 are switched.
S530: and (5) balance control.
Specifically, step S530 includes the following sub-steps:
presetting the imbalance threshold value Z of the battery string 311 1 ；
S531: respectively acquiring the states of charge (SOC) of a plurality of discharging battery packs 311; SOC is defined as the ratio of the remaining capacity of the battery to its nominal capacity:
Figure 296531DEST_PATH_IMAGE002
in the formula:
SOC t is the battery state of charge at time t;
C t the residual capacity of the battery at the moment t;
SOC 0 is the initial value of the charge state of the battery;
i is the current through the cell;
η is the coulombic efficiency of the battery;
s532: correcting the received SOC based on a preset algorithm, and outputting the corrected SOC;
s533: calculating the unbalance degree Z of the battery 311 V ；
Figure 279531DEST_PATH_IMAGE003
In the formula:
z (t) represents the SOC estimated value of the power battery at the time t;
z(t 0 ) Representing an initial value of the SOC of the power battery;
η i the lithium ion battery represents the charge-discharge coulomb efficiency of the power battery, and the value of the coulomb efficiency is determined through experiments, the discharge efficiency is generally regarded as 1, and the charge efficiency is 0.98-1 (within 3C of charge current) for the lithium ion power battery;
iL (tau) is the charging and discharging current of the power battery at the time of tau;
cmax represents the maximum available capacity of the power battery under the current conditions.
S534: judgment of Z V Whether or not it is greater than Z 1 ；
If yes, starting battery equalization.
If not, step S531 is repeated.
Specifically, there are several ways to balance the cells, such as: capacitive equalization, transformer equalization, parallel equalization and inductive equalization; parallel equalization is used in this embodiment and is effective during both the end of the battery charge and discharge.
S600: and (5) residual electricity monitoring.
Specifically, step S600 includes the following sub-steps:
s610: acquiring the residual electric quantity of each battery pack 311 according to the operation parameters;
s620: judging whether the battery pack 311 needs to be charged according to a preset sequence;
if yes, sending a battery maintenance request to the battery management module 3; the maintenance battery request includes information of the current battery module 31; the battery management module 3 starts a corresponding second control switch 313 according to the request of maintaining the battery;
if not, the next battery pack 311 is repeatedly judged until the monitoring of the plurality of battery packs 311 is completed.
For example, if the preset remaining power is lower than 20%, it is determined that the current battery pack 311 needs to be charged, a battery maintenance request is sent to the battery controller 32, and the battery controller 32 sends a charging start instruction to the charging submodule 312; the charging start instruction includes the number of the corresponding battery pack 311; the controller controls the control end of the second control switch 313 corresponding to the serial number to be electrified, so that the first output end of the second control switch 313 is closed, and the second output end is disconnected; the commercial power can be connected to the corresponding battery pack 311, thereby realizing the charging operation of the battery pack 311.
The application also provides grinding and polishing machine equipment which comprises a machine body, an operation panel and a control system, wherein the operation panel is arranged on the machine body; the control operation panel is in communication connection with the control system, a plurality of function key positions are arranged on the control panel, and the signal output ends of the function key positions are in communication connection with the whole machine controller 1.
The present application also provides a computer readable storage medium, which is stored with instructions that when loaded and executed by a processor, implement the above steps.
The computer-readable storage medium includes, for example: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Based on the same inventive concept, embodiments of the present application provide a computer apparatus, which includes a memory and a processor, where the memory stores a computer program that can be loaded by the processor and execute the above method.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the foregoing function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above-described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic disk or optical disk, etc. for storing program codes.
The above embodiments are only used to describe the technical solutions of the present application in detail, but the above embodiments are only used to help understanding the method and the core idea of the present application, and should not be construed as limiting the present application. Those skilled in the art should also appreciate that various modifications and substitutions can be easily made without departing from the scope of the present disclosure.

Claims (9)

1. A control method of a battery control system based on an electric grinding and polishing machine is characterized by comprising the following steps:
acquiring an operation instruction: receiving an operation instruction sent by a user;
detecting the battery: acquiring operating parameters of the battery module (31) based on the received operating instructions; the operating parameters include states of charge of a number of battery packs (311); the step of detecting the battery further comprises the following substeps:
and (3) balance control: respectively acquiring the SOC of a plurality of discharging battery packs (311);
SOC is defined as the ratio of the remaining capacity of the battery (311) to its nominal capacity:
Figure DEST_PATH_IMAGE001
SOC t is the battery state of charge at time t;
C t the residual capacity of the battery at the moment t;
SOC 0 is the initial value of the charge state of the battery;
i is the current through the cell;
η is the coulombic efficiency of the battery;
correcting the received SOC based on a preset algorithm, and outputting the corrected SOC;
presetting an imbalance threshold value Z1 of a battery pack (311);
calculating an imbalance ZV of the battery pack (311);
judging whether the ZV is larger than Z1;
if yes, starting battery equalization; calculating required parameters: acquiring a target torque required by the rotation of the motor based on the acquired operation instruction;
judging the number of battery packs (311) needing to be started in the current battery module (31) based on the target torque and the operation parameters;
and starting to execute: sending the number of the battery packs (311) to be started to a battery management module (3);
-sending a target torque to the motor control module (2).
2. The method of claim 1, wherein the operating parameters include remaining capacity of the plurality of battery packs (311); the control method further comprises the following steps:
residual electricity monitoring: acquiring the residual capacity of each battery pack (311) according to the operation parameters;
judging whether the battery pack (311) needs to be charged according to a preset sequence;
if yes, sending a battery maintenance request to a battery management module (3); the maintenance battery request includes information of a current battery module (31); the battery management module (3) starts a corresponding second control switch (313) according to a battery maintenance request;
if not, the next battery pack (311) is repeatedly judged until the monitoring of the plurality of battery packs (311) is completed.
3. The method for controlling the battery control system based on the electric polishing machine according to claim 1, characterized in that the method further comprises the following steps:
and (3) battery operation detection: acquiring operating parameters of the battery pack (311) during discharging; the operating parameter comprises an operating temperature of the battery pack (311);
judging whether the current operating temperature reaches a temperature threshold value;
if so, the remaining non-operating battery packs are switched (311).
4. Battery control system based on machine is thrown to electronic change mill, its characterized in that: the system comprises a complete machine controller (1), a motor control module (2) and a battery management module (3);
the motor control module (2) is connected with a motor for driving a grinding disc; the motor control module (2) is used for controlling the real-time torque of the motor;
the battery management module (3) is connected with a battery module (31) for supplying power to the motor; the battery module (31) comprises a plurality of battery packs (311); the battery management module (3) is used for monitoring the operation parameters of the battery module (31) and sending the operation parameters to the whole controller (1);
the whole machine controller (1) is respectively connected with the motor control module (2) and the battery management module (3); the complete machine controller (1) is used for executing the control method of the battery control system based on the electric polishing machine according to any one of claims 1-3.
5. The battery control system based on the electric polishing and burnishing machine as claimed in claim 4, wherein a plurality of power input loops are arranged between the power input end of the frequency converter and the power output ends of the plurality of battery packs (311); a first control switch (314) is connected in series in the power input loop; the control end of the first control switch (314) is in communication connection with the battery management module (3), and the first control switch (314) is used for controlling the on-off of the power supply input loop.
6. The battery control system based on the electric polishing and burnishing machine as claimed in claim 5, wherein the battery module (31) further comprises a charging submodule (312) and a second control switch (313), and a charging input loop is connected between the charging submodule (312) and a plurality of battery packs (311); the first output end of the second control switch (313) is connected in series in the charging input loop and is normally open; the second output end of the second control switch (313) is connected in series in the power output loop and is in normally closed arrangement; and the control end of the second control switch (313) is in communication connection with the battery management module (3).
7. A polishing mill apparatus comprising a body, an operating panel mounted on the body, and a control system according to claim 6; and the control operation panel is in communication connection with the control system.
8. A computer device comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of controlling a battery control system based on an electric polisher according to any one of claims 1-3.
9. A computer-readable storage medium, characterized in that the computer storage medium stores a computer program; the computer program is used for realizing the control method of the battery control system based on the electric polishing machine according to any one of claims 1-3 when being executed by a processor.
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CN104953675A (en) * 2015-07-14 2015-09-30 北京友信宏科电子科技有限公司 Energy management equipment, electronic control system, electronic control method and electric vehicle
CN106347133A (en) * 2016-10-14 2017-01-25 清华大学 Energy efficiency hierarchical coordination optimization control method for four-wheel drive extended-range electric vehicle
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